:root {
    --canvas: #ffffff;
    --canvas-strong: #e8edf3;
    --surface: #ffffff;
    --surface-soft: #f7f7f4;
    --ink: #0a1628;
    --ink-soft: #172741;
    --text: #0a1628;
    --muted: #5f6b7a;
    --muted-strong: #465365;
    --border: #e5e7eb;
    --border-strong: #c5cbd4;
    --primary: #0a1628;
    --primary-strong: #172741;
    --signal: #6ee7b7;
    --signal-soft: #d9f8eb;
    --blue: #172741;
    --orange: #334a68;
    --lilac: #e8edf3;
    --success: #25734f;
    --success-bg: #e5f3e9;
    --error: #a14242;
    --error-bg: #f8e8e8;
    --warn: #725b15;
    --warn-bg: #f5efcf;
    --focus-ring: rgba(52, 211, 153, .28);
    --radius-sm: .55rem;
    --radius-md: 1rem;
    --radius-lg: 1.55rem;
    --radius-xl: 2rem;
    --shadow-sm: 0 1px 2px rgba(11, 16, 22, .05);
    --shadow-md: 0 16px 48px rgba(10, 22, 40, .08);
    --shadow-lg: 0 24px 72px rgba(10, 22, 40, .14);
    --font-display: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
    --font-body: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
    --ease-out: cubic-bezier(.16, 1, .3, 1);
    --header-height: 4.5rem;
}

*,
*::before,
*::after { box-sizing: border-box; }

html {
    scroll-behavior: smooth;
    color-scheme: light;
}

body {
    min-height: 100dvh;
    margin: 0;
    overflow-x: hidden;
    color: var(--text);
    background: var(--canvas);
    font-family: var(--font-body);
    font-size: .96rem;
    line-height: 1.65;
    -webkit-font-smoothing: antialiased;
    text-rendering: optimizeLegibility;
}

body::before { content: none; }

::selection { color: var(--ink); background: var(--signal); }

a {
    color: var(--primary);
    text-decoration: none;
}

a:hover { text-decoration: none; }

button,
input,
select,
textarea { font: inherit; }

button,
a { -webkit-tap-highlight-color: transparent; }

img,
video { max-width: 100%; }

code {
    padding: .12rem .32rem;
    border-radius: .3rem;
    background: var(--canvas-strong);
    font-size: .88em;
}

:focus-visible {
    outline: .18rem solid var(--signal);
    outline-offset: .2rem;
}

.container {
    width: min(100%, 78rem);
    margin-inline: auto;
    padding-inline: clamp(1rem, 3vw, 2rem);
}

.skip-link {
    position: fixed;
    top: .75rem;
    left: .75rem;
    z-index: 100;
    padding: .7rem 1rem;
    border-radius: .5rem;
    color: var(--ink);
    background: var(--signal);
    font-weight: 700;
    transform: translateY(-160%);
    transition: transform .2s;
}

.skip-link:focus { transform: translateY(0); }

/* Header */
.site-header {
    position: sticky;
    top: 0;
    z-index: 50;
    min-height: var(--header-height);
    color: #fff;
    padding-top: env(safe-area-inset-top, 0px);
    background: rgba(10, 22, 40, .97);
    border-bottom: 1px solid rgba(255, 255, 255, .09);
    backdrop-filter: blur(20px) saturate(130%);
}

.header-inner {
    min-height: var(--header-height);
    display: flex;
    align-items: center;
    gap: clamp(1.2rem, 3vw, 3rem);
}

.brand {
    flex: 0 0 auto;
    display: inline-flex;
    align-items: center;
    gap: .72rem;
    color: #fff;
    font-family: var(--font-display);
    font-size: 1.18rem;
    font-weight: 700;
    letter-spacing: -.04em;
}

.brand-logo {
    width: 2.2rem;
    height: 2.2rem;
    object-fit: contain;
    border-radius: .52rem;
}

.brand-logo--mark {
    box-shadow: inset 0 0 0 1px rgba(255, 255, 255, .12);
    transition: transform .45s var(--ease-out);
}

.brand-logo--custom {
    filter: brightness(0) invert(1);
}

.brand:hover .brand-logo--mark { transform: rotate(-7deg) scale(1.06); }

.brand-word { max-width: 13rem; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }

.nav {
    min-width: 0;
    flex: 1;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 1rem;
}

.nav-primary,
.nav-meta {
    display: flex;
    align-items: center;
    gap: .3rem;
}

.nav-primary a {
    position: relative;
    padding: .66rem .72rem;
    color: #aab2b9;
    border-radius: .55rem;
    font-size: .78rem;
    font-weight: 700;
    letter-spacing: .015em;
    transition: color .2s, background .2s;
}

.nav-primary a:hover,
.nav-primary a.is-active {
    color: #fff;
    background: rgba(255, 255, 255, .08);
}

.nav-primary a.is-active::after {
    position: absolute;
    right: .7rem;
    bottom: .32rem;
    left: .7rem;
    height: .12rem;
    content: "";
    border-radius: 99px;
    background: var(--signal);
    transform-origin: left;
    animation: lineIn .5s var(--ease-out) both;
}

.nav-meta { margin-left: auto; }

.theme-toggle {
    position: relative;
    width: 2.35rem;
    height: 2.35rem;
    padding: 0;
    border: 1px solid rgba(255, 255, 255, .15);
    border-radius: .65rem;
    color: #fff;
    background: transparent;
    cursor: pointer;
    transition: border-color .2s, background .2s, transform .2s;
}

.theme-toggle:hover { border-color: rgba(255, 255, 255, .4); background: rgba(255, 255, 255, .08); }
.theme-toggle:active { transform: scale(.94); }
.theme-toggle span,
.theme-toggle span::after {
    position: absolute;
    top: 50%;
    left: 50%;
    width: .78rem;
    height: .78rem;
    content: "";
    border: 1.5px solid currentColor;
    border-radius: 50%;
    transform: translate(-50%, -50%);
}
.theme-toggle span::after {
    border: 0;
    background: currentColor;
    clip-path: inset(0 50% 0 0);
}

.user-chip {
    display: inline-flex;
    align-items: center;
    gap: .52rem;
    padding: .25rem .55rem .25rem .25rem;
    color: #eef1f2;
    border: 1px solid rgba(255, 255, 255, .12);
    border-radius: .72rem;
    font-size: .75rem;
    transition: border-color .2s, background .2s;
}

.user-chip:hover { border-color: rgba(255, 255, 255, .28); background: rgba(255, 255, 255, .06); }

.user-chip > span {
    width: 1.78rem;
    height: 1.78rem;
    display: grid;
    place-items: center;
    border-radius: .48rem;
    color: var(--ink);
    background: var(--signal);
    font-family: var(--font-display);
    font-weight: 700;
}

.user-chip b { max-width: 6rem; overflow: hidden; text-overflow: ellipsis; }

.nav-logout {
    padding: .6rem .45rem;
    color: #8f989f;
    font-size: .72rem;
    font-weight: 700;
}
.nav-logout:hover { color: #fff; }

.nav-toggle {
    display: none;
    width: 2.55rem;
    height: 2.55rem;
    margin-left: auto;
    padding: 0;
    border: 1px solid rgba(255, 255, 255, .15);
    border-radius: .65rem;
    color: #fff;
    background: transparent;
    cursor: pointer;
}

.nav-toggle span {
    display: block;
    width: 1rem;
    height: 1px;
    margin: .28rem auto;
    background: currentColor;
    transition: transform .25s, opacity .25s;
}

.nav-toggle[aria-expanded="true"] span:first-child { transform: translateY(.17rem) rotate(45deg); }
.nav-toggle[aria-expanded="true"] span:last-child { transform: translateY(-.17rem) rotate(-45deg); }

.mobile-tabbar { display: none; }

/* Page and footer */
.page {
    min-height: calc(100dvh - var(--header-height) - 9rem);
    padding-top: clamp(2.4rem, 6vw, 5.8rem);
    padding-bottom: clamp(5rem, 9vw, 8rem);
}

.auth-page .page {
    min-height: 0;
    padding-top: 1.5rem;
    padding-bottom: 3rem;
}

.auth-page .footer-inner {
    min-height: 4rem;
    padding-block: 1rem;
}

.site-footer {
    color: #8d969d;
    background: var(--ink);
    border-top: 1px solid rgba(255, 255, 255, .08);
}

.footer-inner {
    min-height: 9rem;
    display: grid;
    grid-template-columns: 1fr auto 1fr;
    align-items: center;
    gap: 2rem;
    font-size: .78rem;
}

.footer-inner > p { margin: 0; text-align: center; }
.footer-inner > a { justify-self: end; color: #c7ccd0; font-weight: 700; }

.footer-brand {
    display: flex;
    align-items: center;
    gap: .7rem;
}
.footer-brand img { width: 2rem; height: 2rem; border-radius: .5rem; }
.footer-brand span { display: grid; line-height: 1.3; }
.footer-brand strong { color: #fff; font-family: var(--font-display); font-size: .9rem; }
.footer-brand small { color: #78828a; }

/* Type and generic layout */
h1,
h2,
h3,
h4 {
    margin-top: 0;
    color: var(--ink);
    font-family: var(--font-display);
    font-weight: 650;
    letter-spacing: -.045em;
    line-height: 1.06;
    text-wrap: balance;
}

h1 { margin-bottom: 1.1rem; font-size: clamp(2.25rem, 5.2vw, 4.8rem); }
h2 { margin-bottom: .9rem; font-size: clamp(1.55rem, 3vw, 2.65rem); }
h3 { margin-bottom: .62rem; font-size: 1.15rem; }
p { text-wrap: pretty; }

.eyebrow {
    margin: 0 0 .82rem;
    color: var(--muted-strong);
    font-size: .68rem;
    font-weight: 800;
    letter-spacing: .16em;
    text-transform: uppercase;
}

.eyebrow--light { color: #aab3ba; }

.lede {
    max-width: 42rem;
    margin: 0;
    color: var(--muted);
    font-size: clamp(1rem, 1.7vw, 1.22rem);
    line-height: 1.7;
}

.muted { color: var(--muted); }
small.muted { display: block; margin-top: .42rem; font-weight: 500; }
.tagline { margin: -.35rem 0 1.6rem; color: var(--muted); }

.page-heading,
.section-heading {
    display: flex;
    align-items: flex-end;
    justify-content: space-between;
    gap: 2rem;
    margin-bottom: clamp(1.8rem, 4vw, 3rem);
}

.page-heading { align-items: flex-start; }
.page-heading h1 { margin-bottom: .7rem; font-size: clamp(2.2rem, 4.6vw, 4rem); }
.page-heading .lede { max-width: 38rem; }
.heading-actions { display: flex; flex-wrap: wrap; justify-content: flex-end; gap: .6rem; }
.section-heading h2 { max-width: 45rem; margin-bottom: 0; }
.section-heading.compact { margin-bottom: 1.2rem; }
.section-heading.compact h2 { font-size: 1.75rem; }

.text-link,
.back-link {
    color: var(--ink);
    font-weight: 750;
    border-bottom: 1px solid var(--ink);
    transition: color .2s, border-color .2s;
}
.text-link:hover,
.back-link:hover { color: var(--primary); border-color: var(--primary); }
.back-link { display: inline-flex; margin-bottom: 1.4rem; color: var(--muted-strong); border: 0; font-size: .78rem; }
.back-link::before { margin-right: .45rem; content: "←"; transition: transform .2s; }
.back-link:hover::before { transform: translateX(-.2rem); }

.grid { display: grid; gap: 1rem; }
.grid-2 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.grid-3 { grid-template-columns: repeat(3, minmax(0, 1fr)); }
.grid-4 { grid-template-columns: repeat(4, minmax(0, 1fr)); }
.compact-grid { gap: .8rem; }

/* Buttons */
.btn {
    position: relative;
    min-height: 2.75rem;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: .6rem;
    padding: .72rem 1.12rem;
    overflow: hidden;
    color: var(--ink);
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: .72rem;
    font-family: var(--font-body);
    font-size: .79rem;
    font-weight: 750;
    line-height: 1.2;
    cursor: pointer;
    transition: color .25s, background .25s, border-color .25s, transform .25s var(--ease-out), box-shadow .25s;
}

.btn:hover {
    border-color: var(--border-strong);
    box-shadow: var(--shadow-sm);
    transform: translateY(-2px);
}
.btn:active { transform: translateY(0) scale(.98); }
.btn-primary { color: #fff; background: var(--primary); border-color: var(--primary); }
.btn-primary:hover { color: #fff; background: var(--primary-strong); border-color: var(--primary-strong); }
.btn-signal { color: var(--ink); background: var(--signal); border-color: var(--signal); }
.btn-signal:hover { color: var(--ink); background: #8eedc7; border-color: #8eedc7; box-shadow: 0 10px 30px rgba(52, 211, 153, .16); }
.btn-on-dark { color: #fff; background: transparent; border-color: rgba(255, 255, 255, .22); }
.btn-on-dark:hover { color: #fff; background: rgba(255, 255, 255, .08); border-color: rgba(255, 255, 255, .42); }
.btn-danger { color: var(--error); background: var(--error-bg); border-color: transparent; }
.btn-success { color: var(--success); background: var(--success-bg); border-color: transparent; }
.btn-text { min-height: 0; padding: .5rem; color: var(--muted); background: transparent; border-color: transparent; }
.btn-text:hover { color: var(--ink); background: transparent; border-color: transparent; box-shadow: none; }
.btn-sm { min-height: 2.15rem; padding: .5rem .78rem; font-size: .72rem; }
.btn-block { width: 100%; }
.btn-icon { width: 2.5rem; padding: 0; }

.form-actions { display: flex; align-items: center; flex-wrap: wrap; gap: .7rem; margin-top: .4rem; }

/* Cards and states */
.card {
    margin-bottom: 1.25rem;
    padding: clamp(1.35rem, 3vw, 2.2rem);
    background: var(--surface);
    border: 1px solid rgba(11, 16, 22, .07);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-sm);
}

.auth-card {
    width: min(100%, 30rem);
    margin: 1rem auto;
    padding: clamp(1.55rem, 4vw, 2.8rem);
    box-shadow: var(--shadow-md);
}

.auth-card--wide { width: min(100%, 40rem); max-width: 40rem; }
.auth-card h1 { font-size: clamp(2rem, 5vw, 3.2rem); }

.auth-shell {
    width: min(100%, 66rem);
    min-height: 36rem;
    display: grid;
    grid-template-columns: minmax(0, 1.15fr) minmax(22rem, .85fr);
    margin: 0 auto;
    overflow: hidden;
    background: var(--surface);
    border: 1px solid rgba(11,16,22,.08);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-lg);
}
.auth-shell--login {
    width: min(100%, 60rem);
    min-height: 0;
    grid-template-columns: minmax(17rem, .9fr) minmax(22rem, 1.1fr);
    border-radius: var(--radius-md);
}
.auth-shell--login .auth-card { padding: 2rem; }
.auth-shell--login .auth-card h2 {
    margin-bottom: .5rem;
    font-size: 2rem;
    letter-spacing: -.03em;
}
.auth-shell--login .auth-card > .eyebrow { margin-bottom: .5rem; }
.auth-shell--login .tagline { margin: 0 0 1.5rem; }
.auth-shell--login .form { display: grid; gap: 1rem; }
.auth-shell--login .form label { margin-bottom: 0; }
.auth-shell--login .form input[type="text"],
.auth-shell--login .form input[type="password"] {
    min-height: 2.75rem;
    margin-top: .5rem;
    padding: .75rem 1rem;
}
.auth-shell--login .auth-links { margin-top: 1rem; }
.auth-shell--register { grid-template-columns: minmax(19rem, .82fr) minmax(28rem, 1.18fr); }
.auth-shell .auth-card { width: 100%; max-width: none; margin: 0; display: grid; align-content: center; border: 0; border-radius: 0; box-shadow: none; }
.auth-shell .auth-card h2 { margin-bottom: .7rem; font-size: clamp(2rem, 4vw, 3.4rem); }
.auth-pitch {
    position: relative;
    display: flex;
    flex-direction: column;
    justify-content: center;
    padding: clamp(2rem, 5vw, 4.5rem);
    overflow: hidden;
    color: #fff;
    background: #0b1016;
}
.auth-pitch::before {
    position: absolute;
    width: 23rem;
    height: 23rem;
    right: -11rem;
    bottom: -9rem;
    content: "";
    border: 1px solid rgba(201,242,95,.28);
    border-radius: 50%;
    box-shadow: 0 0 0 4rem rgba(201,242,95,.035), 0 0 0 8rem rgba(201,242,95,.02);
}
.auth-pitch__mark { position: absolute; top: 1.5rem; left: 1.5rem; width: 2.75rem; height: 2.75rem; border-radius: .65rem; }
.auth-pitch h1 { max-width: 34rem; margin-bottom: 1.2rem; color: #fff; font-size: clamp(3rem, 6vw, 5.5rem); line-height: .9; }
.auth-pitch h1 span { color: var(--signal); }
.auth-pitch > p:not(.eyebrow) { max-width: 31rem; margin: 0; color: #9da6ad; }
.auth-pitch > small { position: absolute; bottom: 1.5rem; color: #66717a; font-size: .56rem; font-weight: 800; letter-spacing: .16em; }
.auth-pitch__signal { position: relative; width: 8rem; height: 2rem; display: flex; align-items: center; gap: .6rem; margin-top: 2rem; }
.auth-pitch__signal::before { position: absolute; right: 0; left: 0; height: 1px; content: ""; background: rgba(255,255,255,.2); }
.auth-pitch__signal i { position: relative; z-index: 1; width: .45rem; height: .45rem; border-radius: 50%; background: var(--signal); animation: pulsePoint 2.4s ease-in-out infinite; }
.auth-pitch__signal i:nth-child(2) { animation-delay: .35s; }
.auth-pitch__signal i:nth-child(3) { animation-delay: .7s; }
.auth-shell--login .auth-pitch { padding: 3rem; }
.auth-shell--login .auth-pitch h1 {
    margin-bottom: 1rem;
    font-size: 3rem;
    letter-spacing: -.03em;
    line-height: 1;
}
.auth-shell--login .auth-pitch__signal { margin-top: 1.5rem; }
.auth-links { display: flex; justify-content: space-between; gap: 1rem; margin-top: 1.1rem; color: var(--muted); font-size: .7rem; }
.auth-links a,
.auth-foot a { color: var(--ink); font-weight: 750; }
.auth-foot { margin: 1.1rem 0 0; color: var(--muted); font-size: .72rem; }

.empty-state {
    position: relative;
    min-height: 18rem;
    display: grid;
    align-content: center;
    justify-items: start;
    padding: clamp(2rem, 5vw, 4rem);
    overflow: hidden;
    background: var(--surface);
    border: 1px dashed var(--border-strong);
    border-radius: var(--radius-lg);
}

.empty-state__mark {
    position: absolute;
    right: 4%;
    bottom: -18%;
    color: var(--canvas-strong);
    font-family: var(--font-display);
    font-size: clamp(8rem, 20vw, 15rem);
    font-weight: 700;
    letter-spacing: -.1em;
    line-height: 1;
    pointer-events: none;
}
.empty-state h3,
.empty-state p,
.empty-state .btn { position: relative; z-index: 1; }
.empty-state h3 { max-width: 33rem; font-size: clamp(1.5rem, 3vw, 2.25rem); }
.empty-state p { max-width: 37rem; margin: .1rem 0 1.2rem; color: var(--muted); }
.empty-inline { padding: 1rem; color: var(--muted); background: var(--surface-soft); border-radius: .8rem; font-size: .84rem; }

/* Forms */
.form label {
    display: block;
    margin-bottom: 1.1rem;
    color: var(--ink-soft);
    font-size: .78rem;
    font-weight: 750;
}

.form input[type="text"],
.form input[type="email"],
.form input[type="password"],
.form input[type="url"],
.form input[type="number"],
.form input[type="tel"],
.form input[type="search"],
.form input[type="date"],
.form input[type="file"],
.form select,
.form textarea,
select,
input[type="text"],
input[type="email"],
input[type="password"],
input[type="url"],
input[type="number"],
input[type="search"],
input[type="date"] {
    width: 100%;
    min-height: 3rem;
    display: block;
    margin-top: .42rem;
    padding: .78rem .92rem;
    color: var(--text);
    background: var(--surface-soft);
    border: 1px solid var(--border);
    border-radius: .68rem;
    font-size: .86rem;
    font-weight: 550;
    transition: border-color .2s, box-shadow .2s, background .2s;
}

.form textarea { min-height: 7.5rem; resize: vertical; line-height: 1.55; }
.form input[type="file"] { padding: .68rem; }
.form input:hover,
.form select:hover,
.form textarea:hover { border-color: var(--border-strong); }
.form input:focus,
.form select:focus,
.form textarea:focus,
select:focus,
input:focus {
    outline: none;
    background: var(--surface);
    border-color: var(--primary);
    box-shadow: 0 0 0 .24rem var(--focus-ring);
}

.form-section {
    margin: 1.6rem 0 1rem;
    padding-top: 1.2rem;
    color: var(--muted);
    border-top: 1px solid var(--border);
    font-family: var(--font-body);
    font-size: .67rem;
    letter-spacing: .14em;
    text-transform: uppercase;
}
.form-section:first-of-type { padding-top: 0; border-top: 0; }

.inline-checkbox {
    display: inline-flex !important;
    align-items: center;
    gap: .55rem;
    font-weight: 600 !important;
}
.inline-checkbox input { accent-color: var(--primary); }

.media-choice {
    position: relative;
    padding: 1rem;
    margin-bottom: 1.15rem;
    background: var(--surface-soft);
    border: 1px solid var(--border);
    border-radius: 1rem;
}
.media-choice label { margin-bottom: .8rem; }
.media-choice label:last-child { margin-bottom: 0; }
.choice-divider {
    display: block;
    margin: .2rem 0 .6rem;
    color: var(--muted);
    font-size: .65rem;
    font-weight: 800;
    text-align: center;
    text-transform: uppercase;
}

/* Alerts */
.flash {
    position: relative;
    margin-bottom: 1rem;
    padding: .88rem 1rem .88rem 1.15rem;
    color: var(--ink);
    background: var(--surface);
    border: 1px solid var(--border);
    border-left-width: .25rem;
    border-radius: .75rem;
    box-shadow: var(--shadow-sm);
    font-size: .84rem;
    animation: flashIn .55s var(--ease-out) both;
}
.flash-success { color: #1c583d; background: var(--success-bg); border-color: #7cb695; }
.flash-error { color: #7f3434; background: var(--error-bg); border-color: #cf8d8d; }
.flash-info { color: #284a66; background: #e6eff5; border-color: #8eb0ca; }
.flash-warning { color: var(--warn); background: var(--warn-bg); border-color: #c5ad5d; }

.team-view-banner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 1rem;
    padding: .8rem 1rem;
    margin-bottom: 1.4rem;
    color: #fff;
    background: var(--primary);
    border-radius: .8rem;
    font-size: .8rem;
}
.team-view-banner .btn { color: #fff; background: rgba(255, 255, 255, .08); border-color: rgba(255, 255, 255, .22); }

/* Dashboard */
.dashboard-hero {
    position: relative;
    min-height: 28rem;
    display: grid;
    grid-template-columns: minmax(0, 1.12fr) minmax(19rem, .88fr);
    align-items: center;
    gap: clamp(2rem, 5vw, 4rem);
    padding: clamp(2.2rem, 5vw, 4.5rem);
    overflow: hidden;
    color: var(--ink);
    background: var(--surface-soft);
    border: 1px solid var(--border);
    border-radius: var(--radius-xl);
    box-shadow: none;
}

.dashboard-hero::before {
    position: absolute;
    inset: 0;
    content: "";
    opacity: .6;
    background-image:
        linear-gradient(rgba(10,22,40,.045) 1px, transparent 1px),
        linear-gradient(90deg, rgba(10,22,40,.045) 1px, transparent 1px);
    background-size: 3.5rem 3.5rem;
    mask-image: linear-gradient(90deg, transparent, #000 72%);
    animation: gridDrift 18s linear infinite;
}

.dashboard-hero::after {
    position: absolute;
    width: 18rem;
    height: 18rem;
    right: -9rem;
    bottom: -9rem;
    content: "";
    border: 1px solid rgba(52, 211, 153, .28);
    border-radius: 50%;
    box-shadow: 0 0 0 4rem rgba(52, 211, 153, .035), 0 0 0 8rem rgba(52, 211, 153, .02);
}

.dashboard-hero__copy,
.dashboard-hero__visual { position: relative; z-index: 1; }

.dashboard-hero h1 {
    max-width: 43rem;
    margin-bottom: 1.4rem;
    color: var(--ink);
    font-size: clamp(3rem, 6vw, 5.5rem);
    letter-spacing: -.045em;
    line-height: .94;
}
.dashboard-hero h1 span { color: #247a5d; }
.dashboard-hero__copy > p:not(.eyebrow) { max-width: 39rem; margin: 0 0 2rem; color: var(--muted-strong); font-size: clamp(.96rem, 1.4vw, 1.08rem); }
.hero-actions { display: flex; flex-wrap: wrap; gap: .7rem; }

.dashboard-hero__visual {
    min-height: 20rem;
    display: grid;
    place-items: center;
}

.stack-panel {
    width: min(100%, 25rem);
    min-height: 19rem;
    display: grid;
    align-content: space-between;
    padding: 1.35rem;
    color: #e8edf3;
    background: #0a1628;
    border: 1px solid rgba(255,255,255,.1);
    border-radius: 1.25rem;
    box-shadow: 0 20px 48px rgba(10,22,40,.18);
}
.stack-panel__head { display: flex; align-items: center; justify-content: space-between; gap: 1rem; color: #8b95a1; font-size: .65rem; font-weight: 800; letter-spacing: .08em; text-transform: uppercase; }
.stack-panel__head b { display: inline-flex; align-items: center; gap: .4rem; color: #6ee7b7; font-size: .61rem; }
.stack-panel__head i { width: .48rem; height: .48rem; display: block; background: #34d399; border-radius: 50%; box-shadow: 0 0 0 .22rem rgba(52,211,153,.12); }
.stack-panel__score { display: flex; align-items: flex-end; gap: .75rem; padding-block: 1.6rem; }
.stack-panel__score strong { color: #fff; font-size: clamp(4.2rem, 9vw, 6.6rem); font-weight: 700; letter-spacing: -.05em; line-height: .78; font-variant-numeric: tabular-nums; }
.stack-panel__score > span { display: grid; color: #6ee7b7; font-size: 1.1rem; font-weight: 800; }
.stack-panel__score small { max-width: 8rem; margin-top: .28rem; color: #8b95a1; font-size: .59rem; font-weight: 700; letter-spacing: .03em; line-height: 1.35; text-transform: uppercase; }
.stack-panel__domains { display: grid; grid-template-columns: repeat(3, 1fr); border-top: 1px solid rgba(255,255,255,.12); }
.stack-panel__domains span { min-height: 4.2rem; display: flex; flex-direction: column; justify-content: center; gap: .42rem; padding: .7rem .55rem; color: #c5cbd4; border-right: 1px solid rgba(255,255,255,.1); font-size: .62rem; font-weight: 700; line-height: 1.25; }
.stack-panel__domains span:last-child { border-right: 0; }
.stack-panel__domains i { width: .4rem; height: .4rem; display: block; background: #6ee7b7; border-radius: 50%; }

.learning-pulse {
    position: relative;
    width: min(24rem, 74vw);
    aspect-ratio: 1;
    display: grid;
    place-items: center;
}

.pulse-ring {
    position: absolute;
    inset: 0;
    border: 1px solid rgba(255, 255, 255, .18);
    border-radius: 50%;
}
.pulse-ring::before,
.pulse-ring::after {
    position: absolute;
    content: "";
    border-radius: 50%;
    background: var(--signal);
}
.pulse-ring::before { top: 12%; right: 12%; width: .7rem; height: .7rem; box-shadow: 0 0 0 .45rem rgba(52, 211, 153, .1); }
.pulse-ring::after { bottom: 18%; left: 7%; width: .35rem; height: .35rem; }
.pulse-ring--one { animation: orbit 16s linear infinite; }
.pulse-ring--two { inset: 16%; border-style: dashed; animation: orbit 12s linear infinite reverse; }

.pulse-core {
    width: 44%;
    aspect-ratio: 1;
    display: grid;
    place-content: center;
    text-align: center;
    color: var(--ink);
    background: var(--signal);
    border-radius: 50%;
    box-shadow: 0 0 0 1.2rem rgba(52, 211, 153, .08), 0 0 4rem rgba(52, 211, 153, .12);
    animation: breathe 4s var(--ease-out) infinite;
}
.pulse-core b { font-family: var(--font-display); font-size: clamp(2.4rem, 5vw, 4.1rem); letter-spacing: -.08em; line-height: .9; }
.pulse-core small { margin-top: .25rem; font-size: .63rem; font-weight: 800; text-transform: uppercase; letter-spacing: .1em; }
.visual-caption { position: absolute; bottom: 0; color: #78828a; font-size: .58rem; font-weight: 800; letter-spacing: .2em; }

.metrics-rail {
    position: relative;
    z-index: 2;
    width: 100%;
    display: grid;
    grid-template-columns: repeat(4, minmax(0, 1fr));
    margin: 1rem auto 0;
    background: var(--surface);
    border: 1px solid rgba(11, 16, 22, .08);
    border-radius: 1.25rem;
    box-shadow: none;
}

.metric {
    position: relative;
    min-height: 7.4rem;
    display: grid;
    align-content: center;
    padding: 1.3rem clamp(1rem, 2.4vw, 2rem);
    border-right: 1px solid var(--border);
}
.metric:last-child { border-right: 0; }
.metric-index { position: absolute; top: .78rem; right: .85rem; color: var(--border-strong); font-family: var(--font-display); font-size: .6rem; font-weight: 700; }
.metric strong { color: var(--ink); font-family: var(--font-display); font-size: clamp(2rem, 4vw, 3.1rem); letter-spacing: -.07em; line-height: 1; font-variant-numeric: tabular-nums; }
.metric > span:last-child { margin-top: .38rem; color: var(--muted); font-size: .69rem; font-weight: 700; }

.learning-library { padding-top: clamp(4rem, 8vw, 6.5rem); }

.course-grid {
    display: grid;
    grid-template-columns: repeat(12, minmax(0, 1fr));
    gap: 1.1rem;
}

.course-card {
    --card-accent: #172741;
    position: relative;
    min-height: 26rem;
    grid-column: span 6;
    display: grid;
    grid-template-columns: minmax(9rem, 40%) 1fr;
    overflow: hidden;
    background: var(--surface);
    border: 1px solid rgba(11, 16, 22, .08);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-sm);
    transition: transform .45s var(--ease-out), box-shadow .45s var(--ease-out);
}
.course-card:nth-child(4n + 1) { grid-column: span 7; }
.course-card:nth-child(4n + 2) { grid-column: span 5; }
.course-card:nth-child(4n + 3) { grid-column: span 5; }
.course-card:nth-child(4n + 4) { grid-column: span 7; }
.course-card--2 { --card-accent: #203451; }
.course-card--3 { --card-accent: #0f2038; }
.course-card--4 { --card-accent: #29415f; }
.course-card:hover { z-index: 2; box-shadow: var(--shadow-md); transform: translateY(-.45rem); }
.course-card::after {
    position: absolute;
    inset: 0;
    pointer-events: none;
    content: "";
    opacity: 0;
    background: radial-gradient(26rem circle at var(--spot-x, 50%) var(--spot-y, 50%), rgba(255,255,255,.22), transparent 46%);
    transition: opacity .25s;
}
.course-card:hover::after { opacity: 1; }

.course-card__visual {
    position: relative;
    min-height: 13rem;
    display: block;
    overflow: hidden;
    color: #fff;
    background: var(--card-accent);
}
.course-card__visual::before {
    position: absolute;
    inset: 0;
    content: "";
    background-image: linear-gradient(90deg, rgba(255,255,255,.08) 1px, transparent 1px), linear-gradient(rgba(255,255,255,.08) 1px, transparent 1px);
    background-size: 2.6rem 2.6rem;
    mask-image: linear-gradient(135deg, #000, transparent 76%);
    transition: transform .8s var(--ease-out);
}
.course-card:hover .course-card__visual::before { transform: scale(1.08) rotate(-1deg); }
.course-card__visual--image::before {
    z-index: 1;
    background: linear-gradient(180deg, rgba(11,16,22,.38), transparent 42%, rgba(11,16,22,.14));
    mask-image: none;
}
.course-card__image {
    width: 100%;
    height: 100%;
    position: absolute;
    inset: 0;
    object-fit: cover;
    transition: transform .45s var(--ease-out);
}
.course-card:hover .course-card__image { transform: scale(1.035); }
.course-card__number { position: absolute; top: 1rem; left: 1rem; z-index: 1; color: #6ee7b7; font-size: .65rem; font-weight: 800; letter-spacing: .08em; }
.course-card__visual--image .course-card__number {
    z-index: 2;
    padding: .35rem .48rem;
    color: #fff;
    background: rgba(11,16,22,.72);
    border-radius: .38rem;
}
.course-card__monogram {
    position: absolute;
    right: -.12em;
    bottom: -.22em;
    color: rgba(255, 255, 255, .9);
    font-family: var(--font-display);
    font-size: clamp(9rem, 18vw, 15rem);
    font-weight: 700;
    letter-spacing: -.12em;
    line-height: .76;
    transition: transform .65s var(--ease-out);
}
.course-card:hover .course-card__monogram { transform: translate(-.06em, -.04em) rotate(-3deg); }
.course-card__line { position: absolute; top: 20%; right: 18%; width: .6rem; height: .6rem; border-radius: 50%; background: var(--signal); box-shadow: 0 0 0 .45rem rgba(110,231,183,.12); animation: floatDot 3.5s ease-in-out infinite; }

.course-card__body {
    min-width: 0;
    display: flex;
    flex-direction: column;
    padding: clamp(1.35rem, 3vw, 2.2rem);
}
.course-meta { display: flex; flex-wrap: wrap; align-items: center; gap: .4rem .9rem; margin-bottom: 1rem; color: var(--muted); font-size: .64rem; font-weight: 750; }
.course-meta span { position: relative; }
.course-meta span + span::before { position: absolute; left: -.53rem; color: var(--border-strong); content: "•"; }
.course-card h3 { margin-bottom: .85rem; font-size: clamp(1.5rem, 2.6vw, 2.1rem); }
.course-card h3 a { color: var(--ink); }
.course-card__body > p { max-width: 33rem; margin: 0; color: var(--muted); font-size: .84rem; }
.course-card__footer { display: flex; align-items: center; gap: 1rem; margin-top: auto; padding-top: 1.4rem; }
.mini-progress { flex: 1; height: .25rem; overflow: hidden; background: var(--canvas-strong); border-radius: 99px; }
.mini-progress span,
.progress-track span { display: block; width: var(--progress, 0%); height: 100%; background: var(--ink); transform-origin: left; animation: growBar 1.1s .25s var(--ease-out) both; }
.circle-link {
    position: relative;
    z-index: 3;
    width: 2.65rem;
    height: 2.65rem;
    flex: 0 0 auto;
    display: grid;
    place-items: center;
    color: #fff;
    background: var(--ink);
    border-radius: 50%;
    font-size: 1rem;
    transition: color .25s, background .25s, transform .25s;
}
.circle-link:hover { color: var(--ink); background: var(--signal); transform: rotate(8deg) scale(1.05); }

.quick-actions {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    margin-top: clamp(3.5rem, 7vw, 6rem);
    border-top: 1px solid var(--border-strong);
    border-bottom: 1px solid var(--border-strong);
}
.action-tile {
    min-height: 9rem;
    display: grid;
    grid-template-columns: auto 1fr auto;
    align-items: center;
    gap: 1rem;
    padding: 1.4rem;
    color: var(--ink);
    border-right: 1px solid var(--border-strong);
    transition: background .25s, padding .35s var(--ease-out);
}
.action-tile:last-child { border-right: 0; }
.action-tile:hover { padding-left: 1.7rem; background: rgba(255,255,255,.55); }
.action-tile__index { color: var(--muted); font-family: var(--font-display); font-size: .7rem; font-weight: 700; }
.action-tile > span:nth-child(2) { display: grid; }
.action-tile strong { font-family: var(--font-display); font-size: 1rem; }
.action-tile small { margin-top: .2rem; color: var(--muted); font-size: .68rem; }
.action-tile b { transition: transform .25s; }
.action-tile:hover b { transform: translate(.2rem, -.2rem); }

/* Course detail */
.course-hero {
    position: relative;
    min-height: 29rem;
    display: grid;
    grid-template-columns: minmax(0, 1fr) minmax(15rem, .52fr);
    align-items: center;
    gap: 2rem;
    padding: clamp(2rem, 6vw, 5rem);
    overflow: hidden;
    color: #fff;
    background: var(--ink);
    border-radius: var(--radius-xl);
}
.course-hero::before {
    position: absolute;
    inset: 0;
    content: "";
    background: radial-gradient(circle at 82% 25%, rgba(52, 211, 153, .16), transparent 30%);
}
.course-hero__copy,
.course-hero__signal,
.course-edit-link { position: relative; z-index: 1; }
.course-hero h1 { max-width: 49rem; margin-bottom: 1.2rem; color: #fff; font-size: clamp(3rem, 7vw, 6.5rem); }
.course-hero .lede { color: #aeb6bc; }
.course-meta--light { margin-top: 1.5rem; color: #b9c0c5; }
.course-hero__signal { min-height: 18rem; display: grid; place-items: center; }
.signal-number { color: var(--signal); font-family: var(--font-display); font-size: clamp(10rem, 23vw, 20rem); font-weight: 700; letter-spacing: -.14em; line-height: .7; animation: signalShift 7s var(--ease-out) infinite; }
.signal-line { position: absolute; width: 85%; aspect-ratio: 1; border: 1px solid rgba(255,255,255,.16); border-radius: 50%; animation: orbit 18s linear infinite; }
.signal-line::after { position: absolute; top: 11%; right: 13%; width: .7rem; height: .7rem; content: ""; border-radius: 50%; background: var(--signal); }
.course-edit-link { position: absolute; top: 1.3rem; right: 1.3rem; padding: .55rem .72rem; color: #fff; border: 1px solid rgba(255,255,255,.2); border-radius: .55rem; font-size: .68rem; font-weight: 750; }
.course-edit-link:hover { background: rgba(255,255,255,.08); }

.course-progress-strip {
    position: relative;
    z-index: 2;
    width: calc(100% - clamp(1rem, 6vw, 4rem));
    min-height: 6.5rem;
    display: grid;
    grid-template-columns: auto 1fr auto;
    align-items: center;
    gap: clamp(1.2rem, 4vw, 3rem);
    margin: -1.8rem auto 0;
    padding: 1.2rem clamp(1rem, 3vw, 2rem);
    background: var(--surface);
    border: 1px solid rgba(11,16,22,.08);
    border-radius: 1.15rem;
    box-shadow: var(--shadow-md);
}
.course-progress-strip > div:not(.progress-track) { display: grid; }
.course-progress-strip strong { color: var(--ink); font-family: var(--font-display); font-size: 1.5rem; letter-spacing: -.05em; }
.metric-label { color: var(--muted); font-size: .62rem; font-weight: 750; }
.progress-track { height: .45rem; overflow: hidden; background: var(--canvas-strong); border-radius: 99px; }
.progress-track span { background: var(--signal); }

.course-layout {
    display: grid;
    grid-template-columns: minmax(0, 1fr) minmax(18rem, 22rem);
    align-items: start;
    gap: clamp(1.4rem, 4vw, 3rem);
    padding-top: clamp(4rem, 8vw, 7rem);
}

.lesson-card {
    margin-bottom: .8rem;
    overflow: hidden;
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: 1rem;
    transition: border-color .25s, box-shadow .25s;
}
.lesson-card[open] { border-color: var(--border-strong); box-shadow: var(--shadow-md); }
.lesson-card.is-complete { border-left: .26rem solid var(--success); }
.lesson-card summary {
    min-height: 5.5rem;
    display: grid;
    grid-template-columns: auto 1fr auto;
    align-items: center;
    gap: 1rem;
    padding: 1rem 1.2rem;
    list-style: none;
    cursor: pointer;
}
.lesson-card summary::-webkit-details-marker { display: none; }
.lesson-card summary::after { grid-column: 3; content: "+"; color: var(--muted); font-family: var(--font-display); font-size: 1.25rem; transition: transform .25s; }
.lesson-card[open] summary::after { transform: rotate(45deg); }
.lesson-card__number { color: var(--muted); font-family: var(--font-display); font-size: .66rem; font-weight: 700; }
.lesson-card__title { min-width: 0; display: grid; }
.lesson-card__title strong { color: var(--ink); font-family: var(--font-display); font-size: 1rem; }
.lesson-card__title small { color: var(--muted); font-size: .64rem; }
.lesson-card__status { grid-column: 3; grid-row: 1; margin-right: 2rem; color: var(--muted); font-size: .65rem; font-weight: 750; }
.is-complete .lesson-card__status { color: var(--success); }
.lesson-card__content { padding: 0 1.2rem 1.3rem; animation: detailIn .45s var(--ease-out) both; }
.lesson-video,
.lesson-embed,
.media-placeholder {
    width: 100%;
    margin-bottom: 1rem;
    overflow: hidden;
    background: #05080b;
    border-radius: .8rem;
    aspect-ratio: 16 / 9;
}
.lesson-video { display: block; }
.lesson-embed iframe { width: 100%; height: 100%; border: 0; }
.media-placeholder { display: grid; place-items: center; color: #79838a; background: var(--ink); font-family: var(--font-display); }
.media-link { min-height: 10rem; display: grid; place-items: center; margin-bottom: 1rem; color: #fff; background: var(--ink); border-radius: .8rem; font-weight: 750; }
.lesson-notes { max-width: 48rem; color: var(--muted-strong); }

.assessment-panel {
    position: sticky;
    top: calc(var(--header-height) + 1.3rem);
    padding: 1.7rem;
    color: #fff;
    background: var(--ink);
    border-radius: 1.2rem;
    box-shadow: var(--shadow-lg);
}
.assessment-panel h2 { color: #fff; font-size: 1.85rem; }
.assessment-panel > p:not(.eyebrow) { color: #9da6ad; font-size: .8rem; }
.assessment-option {
    width: 100%;
    min-height: 4.5rem;
    display: grid;
    grid-template-columns: 1fr auto;
    align-items: center;
    gap: 1rem;
    padding: .9rem 0;
    color: #fff;
    background: transparent;
    border: 0;
    border-top: 1px solid rgba(255,255,255,.14);
    text-align: left;
    cursor: pointer;
}
.assessment-option span { display: grid; }
.assessment-option strong { font-family: var(--font-display); font-size: .88rem; }
.assessment-option small { color: #7f8a92; font-size: .64rem; }
.assessment-option b { color: var(--signal); transition: transform .25s; }
.assessment-option:hover b { transform: translate(.2rem, -.2rem); }

/* Course builder */
.builder-layout {
    display: grid;
    grid-template-columns: minmax(18rem, .82fr) minmax(0, 1.18fr);
    align-items: start;
    gap: clamp(1.5rem, 4vw, 3rem);
}
.builder-form { position: sticky; top: calc(var(--header-height) + 1.2rem); }
.lesson-admin-card {
    display: grid;
    grid-template-columns: auto 1fr auto;
    gap: 1rem;
    align-items: center;
    padding: 1rem 0;
    border-bottom: 1px solid var(--border);
}
.lesson-admin-card:first-of-type { border-top: 1px solid var(--border); }
.lesson-admin-card__number { width: 2.5rem; height: 2.5rem; display: grid; place-items: center; color: var(--muted); border: 1px solid var(--border); border-radius: .65rem; font-family: var(--font-display); font-size: .68rem; font-weight: 700; }
.lesson-admin-card__body h3 { margin-bottom: .25rem; }
.lesson-admin-card__body p { margin: 0; color: var(--muted); font-size: .78rem; }
.lesson-admin-card__body .course-meta { margin: .5rem 0 0; }

.course-cover-editor {
    display: flex;
    align-items: center;
    gap: 1rem;
    margin-top: 1rem;
    padding-top: 1rem;
    border-top: 1px solid var(--border);
}
.course-cover-editor > img {
    width: 8rem;
    aspect-ratio: 16 / 10;
    flex: 0 0 auto;
    object-fit: cover;
    border-radius: .7rem;
}
.course-cover-editor > label { flex: 1; margin: 0; }
.course-cover-editor .course-cover-remove { flex: 0 0 auto; font-weight: 650; }
.course-cover-remove input { width: auto; min-height: 0; display: inline; margin: 0 .35rem 0 0; }
.lesson-admin-card__actions { display: flex; align-items: center; gap: .4rem; }

.structured-class-callout {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 1rem;
    margin-bottom: 1rem;
    padding: 1rem;
    background: color-mix(in srgb, var(--signal) 10%, var(--surface));
    border: 1px solid color-mix(in srgb, var(--signal) 36%, var(--border));
    border-radius: .8rem;
}
.structured-class-callout span { display: grid; }
.structured-class-callout strong { color: var(--ink); font-family: var(--font-display); }
.structured-class-callout small { color: var(--muted); font-size: .65rem; }

.assessment-settings { margin-top: clamp(2rem, 5vw, 4rem); }
.assessment-settings .section-heading > p { max-width: 31rem; }
.mode-picker { display: grid; grid-template-columns: repeat(3, 1fr); gap: .7rem; }
.mode-card { margin: 0; cursor: pointer; }
.mode-card input { position: absolute; opacity: 0; pointer-events: none; }
.mode-card > span { min-height: 7rem; display: grid; align-content: center; gap: .3rem; padding: 1rem; background: var(--surface-soft); border: 1px solid var(--border); border-radius: .8rem; transition: border-color .2s, background .2s, transform .2s; }
.mode-card strong { color: var(--ink); font-family: var(--font-display); }
.mode-card small { color: var(--muted); font-size: .65rem; line-height: 1.5; }
.mode-card:hover > span { transform: translateY(-.12rem); border-color: var(--border-strong); }
.mode-card input:checked + span { background: color-mix(in srgb, var(--signal) 11%, var(--surface)); border-color: var(--success); box-shadow: inset .23rem 0 0 var(--success); }

.builder-layout--pages { grid-template-columns: minmax(20rem, .95fr) minmax(0, 1.05fr); }
.lesson-body-editor { min-height: 16rem; line-height: 1.65; }
.question-picker { min-width: 0; margin: .5rem 0 0; padding: 1rem; border: 1px solid var(--border); border-radius: .8rem; }
.question-picker legend { padding: 0 .4rem; color: var(--ink); font-family: var(--font-display); font-weight: 700; }
.question-picker legend small { color: var(--muted); font-family: var(--font-body); font-size: .65rem; }
.question-picker__list { max-height: 22rem; display: grid; gap: .45rem; overflow-y: auto; padding-right: .25rem; }
.question-check { display: grid; grid-template-columns: auto 1fr; align-items: start; gap: .7rem; margin: 0; padding: .75rem; background: var(--surface-soft); border: 1px solid transparent; border-radius: .65rem; cursor: pointer; }
.question-check:has(input:checked) { background: color-mix(in srgb, var(--signal) 9%, var(--surface)); border-color: var(--success); }
.question-check input { width: auto; min-height: 0; margin: .22rem 0 0; accent-color: var(--success); }
.question-check span { display: grid; color: var(--muted-strong); font-size: .72rem; line-height: 1.4; }
.question-check strong { margin-bottom: .15rem; color: var(--success); font-size: .58rem; letter-spacing: .06em; text-transform: uppercase; }

.typed-answer-field { display: grid; gap: .35rem; margin-top: .8rem; }
.typed-answer-field > span { color: var(--muted); font-size: .68rem; font-weight: 750; }
.typed-answer-field input { width: 100%; min-height: 3.3rem; padding: .8rem .9rem; color: var(--ink); background: var(--surface-soft); border: 1px solid var(--border); border-radius: .72rem; }
.typed-answer-field input:focus { outline: 0; border-color: var(--success); box-shadow: 0 0 0 .2rem color-mix(in srgb, var(--success) 14%, transparent); }

.lesson-reader-shell { max-width: 66rem; margin: 0 auto; }
.lesson-reader-head { display: grid; grid-template-columns: 1fr auto 1fr; align-items: center; gap: 1rem; margin-bottom: .8rem; color: var(--muted); font-size: .68rem; }
.lesson-reader-head > div { display: grid; justify-items: center; }
.lesson-reader-head > div span { font-size: .55rem; letter-spacing: .08em; text-transform: uppercase; }
.lesson-reader-head > div strong { color: var(--ink); font-family: var(--font-display); }
.lesson-reader-head > span:last-child { justify-self: end; font-variant-numeric: tabular-nums; }
.lesson-reader-progress { margin-bottom: clamp(2rem, 5vw, 4rem); }
.lesson-reader { padding: clamp(1.5rem, 6vw, 4.5rem); background: var(--surface); border: 1px solid var(--border); border-radius: 1.35rem; box-shadow: var(--shadow-md); }
.lesson-reader > h1 { max-width: 48rem; font-size: clamp(2.4rem, 7vw, 5.4rem); line-height: .98; }
.lesson-prose { max-width: 46rem; margin: clamp(2rem, 5vw, 3.5rem) 0; }
.lesson-prose p { color: var(--ink-soft); font-size: clamp(1rem, 1.8vw, 1.18rem); line-height: 1.8; }
.lesson-prose p + p { margin-top: 1.45rem; }
.lesson-page-image { width: 100%; max-height: 38rem; display: block; margin: 2rem 0; object-fit: cover; border: 1px solid var(--border); border-radius: 1rem; }
.current-page-image { display: grid; gap: .55rem; }
.current-page-image img { width: min(100%, 16rem); aspect-ratio: 16 / 10; object-fit: cover; border: 1px solid var(--border); border-radius: .7rem; }
.current-page-image .inline-checkbox { margin: 0; }
.page-quiz { margin-top: clamp(3rem, 7vw, 5.5rem); padding-top: clamp(2rem, 5vw, 3.5rem); border-top: 1px solid var(--border); }
.page-quiz__head h2 { font-size: clamp(1.8rem, 4vw, 3rem); }
.page-quiz__result { display: flex; align-items: baseline; gap: .6rem; margin: 1.5rem 0; }
.page-quiz__result strong { color: var(--success); font-family: var(--font-display); font-size: 3.5rem; letter-spacing: -.08em; }
.page-quiz__result span { color: var(--muted); font-size: .7rem; font-weight: 750; text-transform: uppercase; }
.inline-review { margin-bottom: .6rem; padding: 1rem; border: 1px solid var(--border); border-left-width: .25rem; border-radius: .7rem; }
.inline-review.is-correct { border-left-color: var(--success); background: var(--success-bg); }
.inline-review.is-incorrect { border-left-color: var(--error); background: var(--error-bg); }
.inline-review strong { color: var(--ink); font-size: .8rem; }
.inline-review p { margin: .35rem 0 0; color: var(--muted-strong); font-size: .75rem; }
.lesson-reader-nav { display: flex; align-items: center; justify-content: space-between; gap: 1rem; margin-top: clamp(2rem, 5vw, 4rem); padding-top: 1.5rem; border-top: 1px solid var(--border); }
.lesson-reader-nav form { margin: 0; }

/* Existing app components */
.toolbar {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 1rem;
    margin-bottom: 1.3rem;
    flex-wrap: wrap;
}
.toolbar h1,
.toolbar h2 { margin: 0; }
.toolbar h1 { font-size: clamp(2rem, 4vw, 3.6rem); }
.toolbar > div { display: flex; flex-wrap: wrap; gap: .45rem; }
.toolbar > .toolbar-title { display: block; }
.toolbar-title .eyebrow { margin-bottom: .35rem; }
.filter-bar { display: flex; flex-wrap: wrap; align-items: center; gap: .5rem; margin-bottom: 1.2rem; }

.stat {
    min-height: 8.7rem;
    display: grid;
    align-content: center;
    padding: 1.2rem;
    background: var(--surface);
    border: 1px solid rgba(11,16,22,.08);
    border-radius: 1rem;
    box-shadow: var(--shadow-sm);
    text-align: left;
}
.stat .num { color: var(--ink); font-family: var(--font-display); font-size: clamp(2rem, 4vw, 3rem); font-weight: 650; letter-spacing: -.07em; line-height: 1; font-variant-numeric: tabular-nums; }
.stat .label { margin-top: .4rem; color: var(--muted); font-size: .68rem; font-weight: 700; }

.table {
    width: 100%;
    overflow: hidden;
    background: var(--surface);
    border: 1px solid var(--border);
    border-collapse: separate;
    border-spacing: 0;
    border-radius: 1rem;
}
.table th,
.table td { padding: .85rem 1rem; border-bottom: 1px solid var(--border); text-align: left; vertical-align: middle; font-size: .78rem; }
.table th { color: var(--muted); background: var(--surface-soft); font-size: .63rem; font-weight: 800; letter-spacing: .08em; text-transform: uppercase; }
.table tr:last-child td { border-bottom: 0; }
.table tbody tr { transition: background .2s; }
.table tbody tr:hover { background: var(--surface-soft); }
.table .actions { white-space: nowrap; text-align: right; }

.badge {
    display: inline-flex;
    align-items: center;
    min-height: 1.55rem;
    padding: .2rem .55rem;
    color: var(--muted-strong);
    background: var(--surface-soft);
    border: 1px solid var(--border);
    border-radius: .45rem;
    font-size: .62rem;
    font-weight: 750;
    letter-spacing: .025em;
}
.badge-admin { color: #273e73; background: #ebefff; border-color: #c9d2f5; }
.badge-ok { color: var(--success); background: var(--success-bg); border-color: #a6ceb6; }
.filter-bar a.badge:hover { color: var(--ink); border-color: var(--ink); }

.member-list { margin: .5rem 0 0; padding: 0; list-style: none; }
.member-list li { display: flex; align-items: center; gap: .6rem; padding: .6rem 0; border-bottom: 1px solid var(--border); }

.owner-tools { margin-top: .5rem; color: #fff; background: var(--ink); border-color: transparent; }
.owner-tools h2 { margin-bottom: .5rem; color: #fff; }
.owner-tools .btn { color: #fff; background: rgba(255,255,255,.08); border-color: rgba(255,255,255,.16); }
.owner-tools .btn:hover { background: rgba(255,255,255,.14); border-color: rgba(255,255,255,.28); }

/* Owner protected-exam console */
.toolbar > .exam-access-heading { display: block; }
.exam-access-heading .eyebrow { margin-bottom: .35rem; }
.exam-team-picker {
    display: grid;
    grid-template-columns: auto minmax(15rem, 24rem) auto;
    align-items: center;
    gap: .7rem;
    margin-bottom: 1.25rem;
    padding: .9rem 1rem;
    background: var(--surface-soft);
    border: 1px solid var(--border);
    border-radius: 1rem;
}
.exam-team-picker label {
    color: var(--muted-strong);
    font-size: .68rem;
    font-weight: 800;
    letter-spacing: .05em;
    text-transform: uppercase;
}
.exam-team-picker select { min-height: 2.65rem; margin: 0; }
.exam-team-picker .btn { min-height: 2.65rem; }

.exam-access-migration {
    min-height: 19rem;
    display: grid;
    grid-template-columns: auto minmax(0, 1fr);
    align-items: center;
    gap: clamp(1.4rem, 4vw, 3rem);
}
.exam-access-migration__mark {
    width: clamp(5rem, 12vw, 8rem);
    aspect-ratio: 1;
    display: grid;
    place-items: center;
    color: var(--warn);
    background: var(--warn-bg);
    border: 1px solid #c5ad5d;
    border-radius: 50%;
    font-family: var(--font-display);
    font-size: clamp(3rem, 8vw, 5rem);
    font-weight: 700;
}
.exam-access-migration h2 { margin-bottom: .55rem; }
.exam-access-migration p:not(.eyebrow) { max-width: 45rem; margin: 0 0 1.2rem; color: var(--muted); }

.exam-access-summary {
    display: grid;
    grid-template-columns: minmax(16rem, 1.35fr) repeat(2, minmax(10rem, .7fr)) minmax(7rem, .45fr);
    gap: 1px;
    margin-bottom: 1.25rem;
    overflow: hidden;
    color: #fff;
    background: rgba(255, 255, 255, .13);
    border-radius: 1.25rem;
    box-shadow: var(--shadow-md);
}
.exam-access-summary.is-single-part {
    grid-template-columns: minmax(16rem, 1.35fr) minmax(10rem, .7fr) minmax(7rem, .45fr);
}
.exam-access-summary > * { min-width: 0; padding: clamp(1.2rem, 2.5vw, 1.8rem); background: #0a1628; }
.exam-access-summary h2 { margin: .7rem 0 .55rem; color: #fff; font-size: clamp(1.55rem, 3vw, 2.45rem); line-height: 1.05; }
.exam-access-summary p { margin: 0; color: #aeb8c5; font-size: .76rem; line-height: 1.55; }
.exam-access-summary article { display: grid; align-content: center; }
.exam-access-summary article > span,
.exam-access-summary__pass span {
    color: #8f9bab;
    font-size: .58rem;
    font-weight: 800;
    letter-spacing: .12em;
    text-transform: uppercase;
}
.exam-access-summary article > strong {
    margin-top: .55rem;
    color: var(--signal);
    font-family: var(--font-display);
    font-size: 3rem;
    letter-spacing: -.08em;
    line-height: .9;
}
.exam-access-summary article p { margin: .45rem 0 .7rem; color: #fff; font-weight: 700; }
.exam-access-summary article b { color: #fff; font-size: .73rem; font-variant-numeric: tabular-nums; }
.exam-access-summary article small { margin-top: .45rem; color: #8290a1; font-size: .6rem; line-height: 1.45; }
.exam-access-summary__pass { display: grid; align-content: center; justify-items: center; text-align: center; }
.exam-access-summary__pass strong { color: #fff; font-family: var(--font-display); font-size: 2.3rem; letter-spacing: -.07em; }

.exam-access-grid {
    display: grid;
    grid-template-columns: minmax(0, 1.2fr) minmax(19rem, .8fr);
    align-items: start;
    gap: 1.25rem;
}
.exam-card-heading {
    display: flex;
    align-items: flex-start;
    justify-content: space-between;
    gap: 1rem;
    margin-bottom: 1.3rem;
}
.exam-card-heading .eyebrow { margin-bottom: .35rem; }
.exam-card-heading h2 { margin: 0; font-size: clamp(1.4rem, 2.5vw, 2rem); }

.exam-toggle-list {
    display: grid;
    gap: .65rem;
    margin-bottom: 1.25rem;
}
.exam-toggle {
    min-height: 4.25rem;
    display: flex !important;
    align-items: center;
    justify-content: space-between;
    gap: 1rem;
    margin: 0 !important;
    padding: .8rem 1rem;
    background: var(--surface-soft);
    border: 1px solid var(--border);
    border-radius: .8rem;
    cursor: pointer;
}
.exam-toggle span { display: grid; gap: .12rem; }
.exam-toggle strong { color: var(--ink); font-size: .76rem; }
.exam-toggle small { color: var(--muted); font-size: .63rem; font-weight: 550; line-height: 1.4; }
.exam-toggle input {
    width: 2.65rem;
    height: 1.45rem;
    flex: 0 0 auto;
    appearance: none;
    margin: 0;
    padding: .16rem;
    background: var(--border-strong);
    border: 0;
    border-radius: 99px;
    cursor: pointer;
    transition: background .2s;
}
.exam-toggle input::before {
    width: 1.12rem;
    height: 1.12rem;
    display: block;
    content: "";
    background: #fff;
    border-radius: 50%;
    box-shadow: 0 1px 3px rgba(0,0,0,.22);
    transition: transform .2s var(--ease-out);
}
.exam-toggle input:checked { background: var(--success); }
.exam-toggle input:focus { background: var(--border-strong); box-shadow: none; }
.exam-toggle input:checked:focus { background: var(--success); }
.exam-toggle input:checked::before { transform: translateX(1.18rem); }
.exam-access-settings label > small { display: block; margin-top: .45rem; font-size: .63rem; font-weight: 550; line-height: 1.5; }
.course-setup-editor { gap: 0; }
.course-setup-step {
    margin: 0;
    padding: 1.4rem 0;
    border: 0;
    border-top: 1px solid var(--border);
}
.course-setup-step:first-of-type { padding-top: 0; border-top: 0; }
.course-setup-step > legend,
.course-setup-step > h3,
.course-setup-step__heading > h3 {
    margin: 0 0 1rem;
    color: var(--ink);
    font-family: var(--font-display);
    font-size: 1.05rem;
    font-weight: 800;
}
.course-setup-step > legend > span,
.course-setup-step > h3 > span,
.course-setup-step__heading > h3 > span {
    width: 1.65rem;
    height: 1.65rem;
    display: inline-grid;
    place-items: center;
    margin-right: .45rem;
    color: #fff;
    background: var(--primary);
    border-radius: 50%;
    font-size: .7rem;
    vertical-align: middle;
}
.course-setup-step__heading {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 1rem;
    margin-bottom: 1rem;
}
.course-setup-step__heading > h3 { margin: 0; }
.course-setup-fields {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: .75rem;
}
.practice-match-summary {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: .65rem;
    margin-bottom: 1rem;
    padding: .9rem;
    background: var(--surface-soft);
    border-radius: .65rem;
}
.practice-match-summary > div { display: grid; gap: .16rem; }
.practice-match-summary strong { color: var(--ink); font-size: .76rem; }
.practice-match-summary span { color: var(--muted); font-size: .64rem; line-height: 1.45; }
.practice-match-summary b {
    flex: 0 0 auto;
    color: var(--success);
    font-size: .68rem;
    white-space: nowrap;
}
.practice-feedback-summary {
    display: grid;
    gap: .2rem;
    padding: .9rem;
    color: var(--ink);
    background: var(--signal-soft);
    border-radius: .65rem;
}
.practice-feedback-summary strong { font-size: .76rem; }
.practice-feedback-summary span { color: #315d4a; font-size: .68rem; line-height: 1.5; }
.practice-blueprint {
    display: flex;
    flex-wrap: wrap;
    gap: .45rem .75rem;
    margin: 1rem 0;
    padding: .85rem;
    background: var(--surface-soft);
    border-radius: .7rem;
}

.practice-timer {
    margin-left: auto;
    white-space: nowrap;
}
.practice-blueprint strong { width: 100%; color: var(--ink); font-size: .78rem; }
.practice-blueprint span { color: var(--muted-strong); font-size: .66rem; font-weight: 700; }
.practice-course-list {
    margin-top: 1.25rem;
    border-block: 1px solid var(--border);
}
.practice-course-list a {
    min-height: 4.5rem;
    display: grid;
    grid-template-columns: minmax(0, 1fr) auto;
    align-items: center;
    gap: 1rem;
    padding: 1rem .25rem;
    color: var(--ink);
    border-bottom: 1px solid var(--border);
    transition: color .2s, background .2s;
}
.practice-course-list a:last-child { border-bottom: 0; }
.practice-course-list a:hover {
    color: var(--primary);
    background: var(--surface-soft);
}
.practice-course-list span { font-size: .84rem; font-weight: 750; }
.practice-course-list strong {
    color: var(--primary);
    font-size: .7rem;
    white-space: nowrap;
}
.practice-part-break { width: min(100%, 64rem); margin-inline: auto; text-align: left; }
.practice-part-break > form { margin-top: 1.25rem; }
.practice-part-score {
    display: flex;
    align-items: end;
    justify-content: space-between;
    gap: 1.5rem;
    margin-bottom: 1.5rem;
    padding: 1.35rem;
    color: #fff;
    background: var(--ink);
    border-radius: .9rem;
}
.practice-part-score span {
    color: var(--signal);
    font-size: .72rem;
    font-weight: 800;
    letter-spacing: .06em;
    text-transform: uppercase;
}
.practice-part-score h1 { margin: .25rem 0; color: #fff; font-size: 1.65rem; letter-spacing: -.025em; }
.practice-part-score p { margin: 0; color: #c5cfda; font-size: .76rem; }
.practice-part-score dl { display: flex; gap: .5rem; margin: 0; }
.practice-part-score dl div {
    min-width: 5.5rem;
    padding: .65rem .8rem;
    text-align: center;
    background: rgba(255,255,255,.08);
    border-radius: .6rem;
}
.practice-part-score dt { color: #c5cfda; font-size: .62rem; }
.practice-part-score dd { margin: .05rem 0 0; color: #fff; font-size: 1.2rem; font-weight: 800; }
.practice-review-heading { margin-bottom: .75rem; }
.practice-review-heading h2 { margin: 0; font-size: 1.15rem; }
.practice-review-heading p { margin: .15rem 0 0; color: var(--muted); font-size: .72rem; }
.practice-review-list { display: grid; gap: .55rem; }
.practice-review-item {
    overflow: clip;
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: .75rem;
}
.practice-review-item summary {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 1rem;
    padding: .85rem 1rem;
    color: var(--ink);
    font-size: .76rem;
    font-weight: 800;
    cursor: pointer;
    list-style: none;
}
.practice-review-item summary::-webkit-details-marker { display: none; }
.practice-review-item summary::before {
    content: "+";
    width: 1.25rem;
    color: var(--muted);
    font-size: 1rem;
}
.practice-review-item[open] summary::before { content: "−"; }
.practice-review-item summary > :first-child { margin-right: auto; }
.practice-review-state {
    padding: .2rem .45rem;
    color: var(--muted-strong);
    background: var(--surface-soft);
    border-radius: 999px;
    font-size: .62rem;
}
.practice-review-state.is-correct { color: #20563c; background: var(--success-bg); }
.practice-review-state.is-review { color: #793333; background: var(--error-bg); }
.practice-review-content { padding: 1rem; border-top: 1px solid var(--border); }
.practice-review-content .qtext { margin-bottom: 1rem; color: var(--ink); font-size: .9rem; font-weight: 700; line-height: 1.5; }
.practice-answer-comparison { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: .55rem; }
.practice-answer-comparison p {
    display: grid;
    gap: .2rem;
    margin: 0;
    padding: .75rem;
    background: var(--surface-soft);
    border-radius: .6rem;
}
.practice-answer-comparison span,
.practice-answer-pairs span { color: var(--muted); font-size: .64rem; }
.practice-answer-comparison strong { color: var(--ink); font-size: .76rem; }
.practice-answer-pairs { display: grid; gap: .5rem; }
.practice-answer-pairs > div { display: grid; gap: .15rem; padding: .7rem; background: var(--surface-soft); border-radius: .6rem; }
.practice-answer-pairs > div.is-correct { background: var(--success-bg); }
.practice-answer-pairs > div.is-review { background: var(--error-bg); }
.practice-answer-pairs strong { color: var(--ink); font-size: .74rem; }
.practice-result-part {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 1rem;
    margin: 1.5rem 0 .75rem;
    padding: .85rem 1rem;
    color: #fff;
    background: var(--ink);
    border-radius: .75rem;
}
.practice-result-part > div { display: flex; align-items: baseline; gap: .6rem; }
.practice-result-part span { color: var(--signal); font-size: .7rem; font-weight: 800; text-transform: uppercase; }
.practice-result-part strong { font-size: 1.15rem; }
.practice-result-part p { margin: 0; color: #c5cfda; font-size: .7rem; }
.exam-toggle--compact { min-width: min(100%, 17rem); padding-block: .55rem; }
.input-suffix { position: relative; }
.input-suffix input { padding-right: 2.5rem; }
.input-suffix span {
    position: absolute;
    top: 50%;
    right: 1rem;
    color: var(--muted);
    font-weight: 800;
    transform: translateY(-50%);
}
.course-link-behavior {
    display: grid;
    gap: .6rem;
    margin-top: 1rem;
}
.course-link-behavior > label {
    display: grid;
    grid-template-columns: minmax(0, 1fr) minmax(8.5rem, .35fr);
    align-items: center;
    gap: 1rem;
    margin: 0;
    padding: .8rem;
    background: var(--surface-soft);
    border-radius: .7rem;
}
.course-link-behavior label > span { display: grid; gap: .12rem; }
.course-link-behavior label > span strong { color: var(--ink); font-size: .75rem; }
.course-link-behavior label > span small { margin: 0; color: var(--muted); font-size: .62rem; }
.course-link-behavior select { margin: 0; }
.course-config-save--inline { position: static; margin-top: .5rem; }
[data-mode-panel][hidden] { display: none !important; }
.exam-choice-section {
    margin: 1.25rem 0;
    padding: 0;
    border: 0;
}
.exam-choice-section > legend,
.exam-part-editor legend {
    margin-bottom: .65rem;
    color: var(--ink);
    font-size: .82rem;
    font-weight: 800;
}
.exam-choice-section .mode-picker {
    grid-template-columns: repeat(auto-fit, minmax(11rem, 1fr));
}
.exam-choice-section .mode-card > span {
    min-height: 6.3rem;
}
.exam-part-editor {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: .75rem;
    margin: 1.25rem 0;
}
.exam-part-editor > fieldset {
    min-width: 0;
    margin: 0;
    padding: .9rem;
    background: var(--surface-soft);
    border: 1px solid var(--border);
    border-radius: .8rem;
}
.exam-part-editor label { margin-bottom: .75rem; }
.exam-part-editor select { min-width: 0; }
.exam-part-fields {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: .5rem;
}
.exam-part-fields label { min-width: 0; margin: 0; }
.exam-part-fields input { min-width: 0; }
[data-paywall-settings][hidden],
[data-part-two][hidden] { display: none !important; }

.course-classes-toggle { margin-top: 1rem; }

.learner-course-hero {
    display: flex;
    align-items: flex-end;
    justify-content: space-between;
    gap: 2rem;
    padding: clamp(1.5rem, 4vw, 3.25rem) 0;
    border-bottom: 1px solid var(--border);
}
.learner-course-hero > div:first-child { max-width: 42rem; }
.learner-course-hero h1 {
    margin: .8rem 0;
    font-size: clamp(2rem, 5vw, 4.5rem);
    letter-spacing: -.035em;
    text-wrap: balance;
}
.learner-course-hero p { max-width: 65ch; color: var(--muted); }
.learner-course-progress { min-width: min(100%, 18rem); }
.learner-course-progress strong { display: block; font-size: clamp(2rem, 4vw, 3.5rem); }
.learner-course-progress span { display: block; margin: .25rem 0 .75rem; color: var(--muted); }
.learner-course-actions {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(17rem, 1fr));
    gap: .75rem;
    margin: 1.5rem 0 2.5rem;
}
.learner-class-list { margin: 2rem 0 4rem; }
.learner-class-rows { border-top: 1px solid var(--border); }
.learner-class-row {
    display: grid;
    grid-template-columns: 3rem minmax(0, 1fr) auto;
    gap: 1rem;
    align-items: center;
    padding: 1.1rem 0;
    border-bottom: 1px solid var(--border);
}
.learner-class-row__number { color: var(--muted); font-weight: 800; }
.learner-class-row h3 { margin: 0 0 .25rem; font-size: 1rem; }
.learner-class-row p { margin: 0 0 .3rem; color: var(--muted); }
.learner-class-row small { color: var(--muted); }
.learner-class-row.is-complete h3::after {
    content: "Complete";
    display: inline-block;
    margin-left: .5rem;
    color: var(--success);
    font-size: .7rem;
    font-weight: 800;
}
.learner-class-row__actions { display: flex; flex-wrap: wrap; justify-content: flex-end; gap: .4rem; }
.learner-class-row__actions form { margin: 0; }

.test-integrity-gate {
    position: fixed;
    inset: 0;
    z-index: 60;
    display: grid;
    place-items: center;
    padding: 1rem;
    background: #07111f;
    color: #fff;
}
.test-integrity-gate[hidden] { display: none; }
.test-integrity-gate__panel {
    width: min(100%, 34rem);
    padding: clamp(1.5rem, 4vw, 2.5rem);
    border: 1px solid rgba(255, 255, 255, .22);
    border-radius: .9rem;
}
.test-integrity-gate__panel h1 {
    margin: 1rem 0 .75rem;
    color: #fff;
    font-size: clamp(1.8rem, 5vw, 3rem);
    letter-spacing: -.03em;
    text-wrap: balance;
}
.test-integrity-gate__panel p { color: #d7deea; line-height: 1.65; }
.test-integrity-gate__panel small { display: block; margin-top: 1rem; color: #aeb8c5; line-height: 1.5; }
.test-integrity-gate.is-invalidated { background: #2a0d12; }
.test-integrity-active .site-header { display: none; }

.exam-share-card { position: sticky; top: calc(var(--header-height) + 1rem); overflow: hidden; }
.exam-share-stack {
    position: sticky;
    top: calc(var(--header-height) + 1rem);
    display: grid;
    gap: .75rem;
    align-self: start;
}
.exam-share-stack .exam-share-card { position: static; top: auto; }
.exam-share-card > p { margin: -.35rem 0 1.25rem; color: var(--muted); font-size: .76rem; }
.exam-link-live {
    display: inline-flex;
    align-items: center;
    gap: .4rem;
    color: var(--muted);
    font-size: .64rem;
    font-weight: 800;
}
.exam-link-live::before { width: .48rem; height: .48rem; content: ""; border-radius: 50%; background: var(--border-strong); }
.exam-link-live.is-live { color: var(--success); }
.exam-link-live.is-live::before { background: var(--success); box-shadow: 0 0 0 .2rem rgba(37,115,79,.13); }
.exam-share-field { margin-bottom: .85rem; }
.exam-share-field > label {
    display: block;
    margin-bottom: .35rem;
    color: var(--muted-strong);
    font-size: .65rem;
    font-weight: 750;
}
.exam-share-field > div { display: grid; grid-template-columns: minmax(0, 1fr) auto; gap: .45rem; }
.exam-share-field input {
    min-width: 0;
    min-height: 2.75rem;
    margin: 0;
    color: var(--muted-strong);
    background: var(--surface-soft);
    font-family: ui-monospace, SFMono-Regular, Menlo, monospace;
    font-size: .65rem;
}
.exam-share-field small { display: block; min-height: 1.4rem; margin-top: .42rem; color: var(--muted); font-size: .61rem; }
.exam-share-card form { margin: 0; }
.exam-share-note {
    display: grid;
    gap: .2rem;
    margin-top: 1.2rem;
    padding: .9rem;
    color: #c0c9d4;
    background: #0a1628;
    border-radius: .8rem;
}
.exam-share-note strong { color: #fff; font-size: .68rem; }
.exam-share-note span { font-size: .61rem; line-height: 1.5; }
.exam-share-card.is-rotated { animation: linkRotated 1.25s var(--ease-out) both; }

.exam-grant-card { margin-top: .05rem; }
.exam-grant-form {
    display: grid;
    grid-template-columns: minmax(14rem, 1fr) minmax(8rem, .38fr) auto;
    align-items: end;
    gap: .65rem;
    margin-bottom: 1.25rem;
    padding: 1rem;
    background: var(--surface-soft);
    border: 1px solid var(--border);
    border-radius: .9rem;
}
.exam-grant-form label {
    display: grid;
    gap: .4rem;
    margin: 0;
    color: var(--muted-strong);
    font-size: .68rem;
    font-weight: 800;
}
.exam-grant-form select { min-height: 2.75rem; margin: 0; }
.exam-grant-table-wrap { overflow-x: auto; }
.exam-grant-table { min-width: 52rem; }
.exam-grant-table td strong { color: var(--ink); }
.exam-grant-table td form { display: inline; margin: 0; }

.exam-paywall-heading { max-width: 58rem; }
.exam-paywall-grid { align-items: start; }
.exam-purchase-card { position: sticky; top: calc(var(--header-height) + 1rem); }
.exam-format-list { display: grid; gap: .75rem; margin-top: 1.25rem; }
.exam-format-list > div {
    display: grid;
    grid-template-columns: 4.5rem minmax(0, 1fr);
    align-items: center;
    gap: 1rem;
    padding: 1rem;
    background: var(--surface-soft);
    border: 1px solid var(--border);
    border-radius: .85rem;
}
.exam-format-list > div > strong {
    color: var(--primary);
    font-family: var(--font-display);
    font-size: 2rem;
    letter-spacing: -.05em;
}
.exam-format-list > div > span { color: var(--ink); font-size: .78rem; font-weight: 750; line-height: 1.45; }
.exam-format-list small { color: var(--muted); font-size: .65rem; font-weight: 550; }
.exam-access-claim { margin-inline: auto; }

@keyframes linkRotated {
    0% { box-shadow: 0 0 0 0 rgba(37,115,79,.28); }
    45% { box-shadow: 0 0 0 .45rem rgba(37,115,79,.12); }
    100% { box-shadow: var(--shadow-sm); }
}

@media (max-width: 980px) {
    .exam-access-summary { grid-template-columns: repeat(2, minmax(0, 1fr)); }
    .exam-access-summary.is-single-part { grid-template-columns: repeat(2, minmax(0, 1fr)); }
    .exam-access-summary__intro { grid-column: 1 / -1; }
    .exam-access-summary__pass { grid-column: 1 / -1; grid-auto-flow: column; gap: .7rem; justify-content: start; }
    .exam-access-grid { grid-template-columns: 1fr; }
    .exam-share-card,
    .exam-share-stack,
    .exam-purchase-card { position: relative; top: auto; }
}

@media (max-width: 620px) {
    .exam-team-picker,
    .exam-grant-form { grid-template-columns: 1fr; align-items: stretch; }
    .exam-team-picker .btn,
    .exam-grant-form .btn { width: 100%; }
    .exam-access-summary { grid-template-columns: 1fr; }
    .exam-access-summary.is-single-part { grid-template-columns: 1fr; }
    .exam-access-summary__intro,
    .exam-access-summary__pass { grid-column: 1; }
    .exam-access-summary__pass { grid-auto-flow: column; justify-content: space-between; }
    .exam-part-editor { grid-template-columns: 1fr; }
    .exam-part-fields { grid-template-columns: repeat(3, minmax(0, 1fr)); }
    .course-setup-fields { grid-template-columns: 1fr; }
    .course-setup-step__heading { align-items: stretch; flex-direction: column; }
    .practice-match-summary { align-items: flex-start; flex-direction: column; }
    .exam-toggle--compact { width: 100%; }
    .course-link-behavior > label { grid-template-columns: 1fr; }
    .exam-access-migration { grid-template-columns: 1fr; }
    .exam-share-field > div { grid-template-columns: 1fr; }
    .exam-share-field .btn { width: 100%; }
    .learner-course-hero { align-items: stretch; flex-direction: column; }
    .learner-course-progress { min-width: 0; width: 100%; }
    .learner-class-row { grid-template-columns: 2.25rem minmax(0, 1fr); }
    .learner-class-row__actions { grid-column: 2; justify-content: flex-start; }
}

.question-block {
    position: relative;
    padding: clamp(1.3rem, 3vw, 2.2rem);
    margin-bottom: 1rem;
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: 1.15rem;
    box-shadow: var(--shadow-sm);
}
.question-block .qnum { display: flex; align-items: center; justify-content: space-between; gap: 1rem; margin-bottom: .45rem; color: var(--muted); font-size: .64rem; font-weight: 800; letter-spacing: .09em; text-transform: uppercase; }
.question-block .qtext { max-width: 60rem; margin: .4rem 0 1.25rem; color: var(--ink); font-family: var(--font-display); font-size: clamp(1.15rem, 2.2vw, 1.55rem); font-weight: 600; line-height: 1.35; }
.question-image { display: block; width: auto; max-height: 34rem; margin: 0 0 1.2rem; border: 1px solid var(--border); border-radius: .8rem; background: #fff; }

.option {
    position: relative;
    display: flex;
    align-items: flex-start;
    gap: .75rem;
    margin-bottom: .55rem;
    padding: .82rem .9rem;
    color: var(--ink-soft);
    background: var(--surface-soft);
    border: 1px solid var(--border);
    border-radius: .72rem;
    cursor: pointer;
    transition: border-color .2s, background .2s, transform .2s;
}
.option:hover { background: var(--surface); border-color: var(--primary); transform: translateX(.18rem); }
.option input { margin-top: .24rem; accent-color: var(--primary); }
.option.correct { color: #20563c; background: var(--success-bg); border-color: #79b18f; }
.option.incorrect { color: #793333; background: var(--error-bg); border-color: #c98686; }
.review-question .option { cursor: default; }
.review-question .option:hover {
    background: var(--surface-soft);
    border-color: var(--border);
    transform: none;
}
.review-question .option.correct:hover {
    background: var(--success-bg);
    border-color: #79b18f;
}
.review-question .option.incorrect:hover {
    background: var(--error-bg);
    border-color: #c98686;
}

.explanation { margin-top: 1rem; padding: 1rem; color: var(--muted-strong); background: var(--surface-soft); border-radius: .5rem; font-size: .8rem; }
.explanation > strong { color: var(--ink); }
.explanation > p { margin: .25rem 0 0; }
.result-summary { padding: .8rem 0; text-align: center; }
.result-summary .score { color: var(--ink); font-family: var(--font-display); font-size: clamp(4rem, 10vw, 7rem); font-weight: 700; letter-spacing: -.09em; line-height: 1; }
.result-meta {
    width: min(100%, 48rem);
    display: grid;
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: .5rem;
    margin: 1.4rem auto;
    text-align: left;
}
.result-meta > span { display: grid; gap: .2rem; padding: .75rem; background: var(--surface-soft); border: 1px solid var(--border); border-radius: .65rem; }
.result-meta small { color: var(--muted); font-size: .62rem; font-weight: 750; letter-spacing: .05em; text-transform: uppercase; }
.result-meta strong { color: var(--ink); font-size: .76rem; }
.badge-fail { color: #991b1b; background: var(--error-bg); border-color: #c98686; }
.results-stats { margin-bottom: 1rem; }
.results-history { margin-top: 0; }
.results-history .toolbar h2 { font-size: clamp(1.6rem, 3vw, 2.4rem); }
.results-filter {
    display: inline-flex;
    gap: .2rem;
    padding: .24rem;
    background: var(--surface-soft);
    border: 1px solid var(--border);
    border-radius: .7rem;
}
.results-filter a {
    padding: .5rem .75rem;
    color: var(--muted);
    border-radius: .5rem;
    font-size: .72rem;
    font-weight: 700;
}
.results-filter a.is-active { color: var(--ink); background: var(--surface); box-shadow: var(--shadow-sm); }
.table-scroll { max-width: 100%; overflow-x: auto; }
.table-scroll:focus-visible { outline: .2rem solid var(--primary); outline-offset: .2rem; }
.results-history td { vertical-align: middle; }
.results-history td > strong,
.results-history td > time { color: var(--ink); font-weight: 700; }
.results-history td small { display: block; margin-top: .18rem; color: var(--muted); font-size: .68rem; white-space: normal; }
.result-percent { font-family: var(--font-display); font-size: 1.15rem; }
.results-admin-filters {
    display: grid;
    grid-template-columns: minmax(12rem, 1.3fr) repeat(4, minmax(8rem, .7fr)) auto;
    align-items: end;
    gap: .7rem;
}
.results-admin-filters label {
    margin: 0;
    color: var(--ink-soft);
    font-size: .72rem;
    font-weight: 750;
}
.results-admin-filters .btn { min-height: 3.1rem; }
.result-actions { justify-content: center; margin-top: 1rem; }
.result-action-form { display: inline-flex; margin: 0; }

.quiz-progress { height: .42rem; margin-bottom: 1.4rem; overflow: hidden; background: var(--border); border-radius: 99px; }
.quiz-progress > div { height: 100%; background: var(--signal); transition: width .5s var(--ease-out); }
.match-row { display: flex; align-items: center; gap: .7rem; margin-bottom: .65rem; flex-wrap: wrap; }
.match-row .match-prompt { min-width: 10rem; flex: 1; color: var(--ink-soft); font-weight: 700; }
.match-row select { flex: 1; min-width: 10rem; }
.match-row .match-input { width: 7rem; min-height: 2.7rem; padding: .65rem; text-align: center; text-transform: uppercase; background: var(--surface-soft); border: 1px solid var(--border); border-radius: .65rem; }

.answer-row { display: flex; align-items: center; gap: .6rem; margin-bottom: .65rem; }
.answer-row input[type="text"] { flex: 1; margin-top: 0; }
.answer-row select { width: auto; min-width: 10rem; margin-top: 0; }
.answer-row .correct-toggle { display: inline-flex; align-items: center; gap: .4rem; white-space: nowrap; font-size: .72rem; font-weight: 700; }
.answer-row .remove-row { padding: .55rem .7rem; color: var(--error); background: var(--error-bg); border: 0; border-radius: .55rem; cursor: pointer; }

.bulk-card {
    padding: 1.2rem;
    margin-bottom: 1rem;
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: 1rem;
    box-shadow: var(--shadow-sm);
}
.bulk-card-head { display: flex; align-items: center; justify-content: space-between; gap: 1rem; margin-bottom: .8rem; }
.bulk-card-head h3 { margin: 0; }
.bulk-card textarea,
.bulk-card .bulk-type { width: 100%; min-height: 3rem; display: block; margin: 0 0 .7rem; padding: .75rem .85rem; color: var(--text); background: var(--surface-soft); border: 1px solid var(--border); border-radius: .65rem; }
.bulk-card textarea { min-height: 5rem; resize: vertical; }

.hero { max-width: 52rem; margin-inline: auto; padding: clamp(2rem, 7vw, 5rem); text-align: center; }
.hero h1 { font-size: clamp(2.8rem, 7vw, 5.7rem); }
.hero p { max-width: 36rem; margin: 0 auto 1.5rem; color: var(--muted); }

.exam-bar {
    position: sticky;
    top: calc(var(--header-height) + .65rem);
    z-index: 20;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 1rem;
    padding: .78rem 1rem;
    margin-bottom: 1rem;
    color: #fff;
    background: rgba(11, 16, 22, .94);
    border: 1px solid rgba(255,255,255,.12);
    border-radius: .8rem;
    box-shadow: var(--shadow-lg);
    backdrop-filter: blur(18px);
}
.exam-bar .timer { color: var(--signal); font-family: var(--font-display); font-size: 1.3rem; font-weight: 700; font-variant-numeric: tabular-nums; }
.exam-bar .timer.time-low { color: #ff8c8c; animation: urgent 1s ease-in-out infinite; }
.qflag { padding: .36rem .55rem; color: var(--muted); background: var(--surface-soft); border: 1px solid var(--border); border-radius: .45rem; cursor: pointer; font-size: .65rem; }
.qflag.active { color: var(--warn); background: var(--warn-bg); border-color: #cdb764; }
.question-block.flagged { border-color: #cdb764; box-shadow: 0 0 0 .2rem rgba(205,183,100,.18); }

.bar { height: .5rem; overflow: hidden; background: var(--border); border-radius: 99px; }
.bar > span { display: block; height: 100%; background: var(--primary); transform-origin: left; animation: growBar 1s var(--ease-out) both; }
.trend { height: 9rem; display: flex; align-items: flex-end; gap: .3rem; }
.trend .col { min-height: .15rem; flex: 1; background: var(--primary); border-radius: .22rem .22rem 0 0; transform-origin: bottom; animation: barRise .8s var(--ease-out) both; }

.sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border: 0;
}
.mode-card input:focus-visible + span {
    outline: .2rem solid var(--primary);
    outline-offset: .18rem;
}
.course-config-status {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 1rem;
    margin-bottom: 1rem;
    padding: .85rem 1rem;
    color: #6f5514;
    background: var(--warn-bg);
    border: 1px solid #cdb764;
    border-radius: .8rem;
}
.course-config-status.is-ready {
    color: #20563c;
    background: var(--success-bg);
    border-color: #79b18f;
}
.course-config-status strong { font-family: var(--font-display); }
.course-config-status span { font-size: .76rem; }
.course-config-form { display: grid; gap: 1rem; }
.course-config-form > .card,
.course-config-grid > .card { margin: 0; }
.course-config-grid { display: grid; grid-template-columns: minmax(0, .8fr) minmax(0, 1.2fr); gap: 1rem; }
.course-config-fields { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: .7rem; }
.course-group-table { overflow: hidden; border: 1px solid var(--border); border-radius: .85rem; }
.course-group-row {
    display: grid;
    grid-template-columns: minmax(12rem, 1fr) minmax(8rem, .34fr) minmax(8rem, .34fr);
    align-items: center;
    gap: 1rem;
    min-height: 4.2rem;
    padding: .75rem 1rem;
    border-bottom: 1px solid var(--border);
}
.course-group-row:last-child { border-bottom: 0; }
.course-group-row--head {
    min-height: 2.75rem;
    color: var(--muted);
    background: var(--surface-soft);
    font-size: .7rem;
    font-weight: 750;
    letter-spacing: .04em;
    text-transform: uppercase;
}
.course-group-row > span:first-child { display: grid; }
.course-group-row > span:first-child strong { color: var(--ink); font-family: var(--font-display); }
.course-group-row > span:first-child small { margin-top: .16rem; color: var(--muted); font-size: .7rem; }
.course-group-toggle {
    display: flex;
    align-items: center;
    gap: .55rem;
    margin: 0;
    color: var(--muted-strong);
    font-size: .72rem;
    cursor: pointer;
}
.course-group-toggle input { width: auto; min-height: 0; margin: 0; accent-color: var(--success); }
.course-pool-summary { margin: .8rem 0 0; color: var(--muted); font-size: .75rem; }
.course-config-save {
    position: sticky;
    bottom: 1rem;
    z-index: 25;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 1rem;
    padding: .85rem 1rem;
    color: #d9e0e5;
    background: rgba(11, 16, 22, .96);
    border: 1px solid rgba(255,255,255,.14);
    border-radius: .9rem;
    box-shadow: var(--shadow-lg);
    backdrop-filter: blur(18px);
}
.course-config-save span { font-size: .72rem; }
.course-config-lock { max-width: 48rem; }
.course-config-lock h2 { margin-top: 1rem; }

.install-banner {
    position: fixed;
    right: 1rem;
    bottom: 1rem;
    left: 1rem;
    z-index: 60;
    width: min(calc(100% - 2rem), 48rem);
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: .8rem;
    margin-inline: auto;
    padding: .9rem;
    color: #fff;
    background: rgba(11,16,22,.96);
    border: 1px solid rgba(255,255,255,.14);
    border-radius: 1rem;
    box-shadow: var(--shadow-lg);
    backdrop-filter: blur(20px);
    animation: bannerIn .65s var(--ease-out) both;
}
.install-banner .install-text { font-size: .76rem; }
.install-banner .install-actions { display: flex; gap: .4rem; flex-wrap: wrap; }

/* Dark mode */
html[data-theme="dark"] {
    color-scheme: dark;
    --canvas: #0d1319;
    --canvas-strong: #151d24;
    --surface: #141c23;
    --surface-soft: #10171d;
    --ink: #f3f5ee;
    --ink-soft: #d9ded9;
    --text: #edf0ec;
    --muted: #8f9aa1;
    --muted-strong: #aeb7bc;
    --border: #29343c;
    --border-strong: #3b4851;
    --primary: #d7e0e5;
    --primary-strong: #ffffff;
    --focus-ring: rgba(52, 211, 153, .2);
    --shadow-sm: 0 1px 2px rgba(0,0,0,.25);
    --shadow-md: 0 18px 60px rgba(0,0,0,.24);
    --shadow-lg: 0 32px 90px rgba(0,0,0,.38);
}
html[data-theme="dark"] body {
    background:
        radial-gradient(circle at 4% 12%, rgba(52, 211, 153, .07), transparent 24rem),
        radial-gradient(circle at 94% 28%, rgba(30, 58, 95, .08), transparent 30rem),
        var(--canvas);
}
html[data-theme="dark"] a { color: var(--ink); }
html[data-theme="dark"] .site-header,
html[data-theme="dark"] .site-footer,
html[data-theme="dark"] .dashboard-hero,
html[data-theme="dark"] .course-hero,
html[data-theme="dark"] .owner-tools,
html[data-theme="dark"] .media-link,
html[data-theme="dark"] .media-placeholder,
html[data-theme="dark"] .assessment-panel { --ink: #0b1016; }
/* Links on dark panels keep their own colors (the generic dark-mode link
   rule above would otherwise paint them near-black on a dark background). */
html[data-theme="dark"] .brand,
html[data-theme="dark"] .media-link { color: #fff; }
html[data-theme="dark"] .nav-primary a { color: #aab2b9; }
html[data-theme="dark"] .nav-primary a:hover,
html[data-theme="dark"] .nav-primary a.is-active { color: #fff; }
html[data-theme="dark"] .user-chip { color: #eef1f2; }
html[data-theme="dark"] .nav-logout { color: #8f989f; }
html[data-theme="dark"] .footer-inner > a { color: #c7ccd0; }
html[data-theme="dark"] .btn-primary { color: #0b1016; background: #e7ecef; border-color: #e7ecef; }
html[data-theme="dark"] .btn-primary:hover { color: #0b1016; background: #fff; border-color: #fff; }
html[data-theme="dark"] .btn-signal { color: #0b1016; }
html[data-theme="dark"] .course-card__visual,
html[data-theme="dark"] .course-card__monogram { color: #0b1016; }
html[data-theme="dark"] .course-card__monogram { color: rgba(11,16,22,.86); }
html[data-theme="dark"] .circle-link { color: #0b1016; background: var(--signal); }
html[data-theme="dark"] .mini-progress span { background: var(--signal); }
html[data-theme="dark"] .flash-success { color: #8fd3aa; background: #14271d; border-color: #356f4b; }
html[data-theme="dark"] .flash-error { color: #e8a7a7; background: #2b1818; border-color: #743d3d; }
html[data-theme="dark"] .flash-info { color: #a9c9df; background: #152532; border-color: #3f6b89; }
html[data-theme="dark"] .flash-warning { color: #dfcc7c; background: #2a2415; border-color: #74642b; }
html[data-theme="dark"] .option.correct { color: #91d3aa; background: #14271d; border-color: #356f4b; }
html[data-theme="dark"] .option.incorrect { color: #e2a3a3; background: #2b1818; border-color: #743d3d; }
html[data-theme="dark"] .badge-admin { color: #b8c7ff; background: #1a2340; border-color: #394977; }
html[data-theme="dark"] .badge-ok { color: #90d3aa; background: #14271d; border-color: #356f4b; }
html[data-theme="dark"] .badge-fail { color: #e2a3a3; background: #2b1818; border-color: #743d3d; }
html[data-theme="dark"] .question-image { background: #fff; }
html[data-theme="dark"] .btn-success { color: #8fd3aa; background: #14271d; }
html[data-theme="dark"] .btn-danger { color: #e6a5a5; background: #2b1818; }

/* Motion */
[data-reveal] {
    opacity: 0;
    transform: translateY(1.6rem);
}
[data-reveal].is-visible {
    opacity: 1;
    transform: translateY(0);
    transition: opacity .8s var(--ease-out), transform .8s var(--ease-out);
}

@keyframes lineIn { from { transform: scaleX(0); } to { transform: scaleX(1); } }
@keyframes flashIn { from { opacity: 0; transform: translateY(-.5rem); } to { opacity: 1; transform: none; } }
@keyframes bannerIn { from { opacity: 0; transform: translateY(2rem) scale(.98); } to { opacity: 1; transform: none; } }
@keyframes gridDrift { to { background-position: 4.5rem 4.5rem; } }
@keyframes orbit { to { transform: rotate(360deg); } }
@keyframes breathe { 0%, 100% { transform: scale(1); } 50% { transform: scale(1.035); } }
@keyframes floatDot { 0%, 100% { transform: translateY(0); } 50% { transform: translateY(.8rem); } }
@keyframes growBar { from { transform: scaleX(0); } to { transform: scaleX(1); } }
@keyframes detailIn { from { opacity: 0; transform: translateY(-.5rem); } to { opacity: 1; transform: none; } }
@keyframes signalShift { 0%, 100% { transform: translateY(0) rotate(0); } 50% { transform: translateY(-.5rem) rotate(-2deg); } }
@keyframes urgent { 50% { opacity: .55; } }
@keyframes barRise { from { transform: scaleY(0); } to { transform: scaleY(1); } }
@keyframes pulsePoint { 0%, 100% { transform: scale(.7); opacity: .35; } 50% { transform: scale(1.15); opacity: 1; } }

/* Responsive */
@media (max-width: 1080px) {
    .nav-primary a { padding-inline: .48rem; font-size: .72rem; }
    .nav-logout { display: none; }
    .dashboard-hero { grid-template-columns: 1fr minmax(17rem, .7fr); }
    .course-card,
    .course-card:nth-child(n) { grid-column: span 6; grid-template-columns: 1fr; }
    .course-card__visual { min-height: 15rem; }
    .course-card__body { min-height: 15rem; }
    .results-admin-filters { grid-template-columns: repeat(3, minmax(0, 1fr)); }
    .results-admin-filters .btn { width: 100%; }
}

@media (max-width: 860px) {
    .nav-toggle { display: block; }
    .nav {
        position: absolute;
        top: calc(100% + .55rem);
        right: 1rem;
        left: 1rem;
        display: grid;
        visibility: hidden;
        gap: .8rem;
        padding: .85rem;
        opacity: 0;
        background: rgba(10,22,40,.99);
        border: 1px solid rgba(255,255,255,.12);
        border-radius: 1rem;
        box-shadow: var(--shadow-lg);
        transform: translateY(-.7rem) scale(.98);
        transform-origin: top;
        transition: opacity .25s, transform .25s, visibility .25s;
    }
    .nav.open { visibility: visible; opacity: 1; transform: none; }
    .nav-primary { display: grid; grid-template-columns: repeat(2, 1fr); }
    .nav-primary a { padding: .78rem; }
    .nav-meta { margin-left: 0; padding-top: .75rem; border-top: 1px solid rgba(255,255,255,.1); }
    .nav-meta .user-chip { margin-right: auto; }

    .dashboard-hero { min-height: auto; grid-template-columns: 1fr; }
    .dashboard-hero__visual { min-height: 18rem; }
    .learning-pulse { width: min(20rem, 76vw); }
    .visual-caption { bottom: -1rem; }
    .metrics-rail { grid-template-columns: repeat(2, 1fr); }
    .metric:nth-child(2) { border-right: 0; }
    .metric:nth-child(-n+2) { border-bottom: 1px solid var(--border); }
    .course-card,
    .course-card:nth-child(n) { grid-column: span 12; grid-template-columns: minmax(10rem, 38%) 1fr; }
    .quick-actions { grid-template-columns: 1fr; }
    .action-tile { border-right: 0; border-bottom: 1px solid var(--border-strong); }
    .action-tile:last-child { border-bottom: 0; }

    .course-hero { grid-template-columns: 1fr; }
    .course-hero__signal { min-height: 13rem; }
    .signal-number { font-size: 12rem; }
    .course-layout { grid-template-columns: 1fr; }
    .assessment-panel { position: relative; top: 0; }
    .builder-layout { grid-template-columns: 1fr; }
    .builder-form { position: relative; top: 0; }
    .auth-shell,
    .auth-shell--register { grid-template-columns: 1fr; }
    .auth-pitch { min-height: 26rem; }
    .auth-shell--login {
        grid-template-columns: minmax(17rem, .9fr) minmax(22rem, 1.1fr);
    }
    .auth-shell--login .auth-pitch { min-height: 0; }

    .grid-4 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
    .footer-inner { grid-template-columns: 1fr 1fr; padding-block: 1.5rem; }
    .footer-inner > p { grid-column: 1 / -1; grid-row: 2; text-align: left; }
}

@media (max-width: 720px) {
    body { padding-bottom: calc(4.25rem + env(safe-area-inset-bottom, 0px)); }
    .mobile-tabbar {
        position: fixed;
        right: 0;
        bottom: 0;
        left: 0;
        z-index: 70;
        min-height: calc(4.25rem + env(safe-area-inset-bottom, 0px));
        display: grid;
        grid-template-columns: repeat(4, minmax(0, 1fr));
        align-items: start;
        padding: .42rem max(.45rem, env(safe-area-inset-right, 0px)) env(safe-area-inset-bottom, 0px) max(.45rem, env(safe-area-inset-left, 0px));
        background: rgba(255,255,255,.97);
        border-top: 1px solid var(--border);
        backdrop-filter: blur(20px) saturate(140%);
    }
    .mobile-tabbar--learner {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }
    .mobile-tabbar--learner-1 { grid-template-columns: 1fr; }
    .mobile-tabbar--learner-3 { grid-template-columns: repeat(3, minmax(0, 1fr)); }
    .mobile-tabbar a {
        min-width: 0;
        min-height: 3.4rem;
        display: grid;
        place-content: center;
        justify-items: center;
        gap: .16rem;
        color: #5f6b7a;
        border-radius: .65rem;
        font-size: .59rem;
        font-weight: 700;
    }
    .mobile-tabbar a.is-active { color: #0a1628; background: #f7f7f4; }
    .mobile-tabbar svg { width: 1.25rem; height: 1.25rem; fill: none; stroke: currentColor; stroke-width: 1.8; stroke-linecap: round; stroke-linejoin: round; }
    .mobile-tabbar:not(.mobile-tabbar--learner) a:nth-child(2) svg { fill: currentColor; stroke: none; }
    .mobile-tabbar a.is-active svg { color: #247a5d; }
    .site-footer { margin-bottom: calc(-4.25rem - env(safe-area-inset-bottom, 0px)); padding-bottom: calc(4.25rem + env(safe-area-inset-bottom, 0px)); }
    .install-banner { bottom: calc(4.75rem + env(safe-area-inset-bottom, 0px)); }
    .auth-page .page { padding-top: 1rem; padding-bottom: 2rem; }
    .auth-page { padding-bottom: 0; }
    .auth-page .site-footer { margin-bottom: 0; padding-bottom: 0; }
    .auth-shell--login {
        width: min(100%, 32rem);
        grid-template-columns: 1fr;
    }
    .auth-shell--login .auth-pitch { display: none; }
    .course-config-save { bottom: calc(4.75rem + env(safe-area-inset-bottom, 0px)); }
}

@media (max-width: 620px) {
    :root { --header-height: 3.75rem; }
    .container { padding-inline: 1rem; }
    .page { padding-top: 1.25rem; padding-bottom: 4rem; }
    .brand { gap: .55rem; font-size: 1.02rem; }
    .brand-logo { width: 1.8rem; height: 1.8rem; border-radius: .42rem; }
    .brand-word { max-width: 9rem; }
    .nav-toggle { width: 2.75rem; height: 2.75rem; }
    .nav { top: calc(100% + .35rem); right: .65rem; left: .65rem; }
    .dashboard-hero { gap: 1.5rem; border-radius: 1.15rem; padding: 1.5rem 1.15rem; }
    .dashboard-hero h1 { margin-bottom: 1rem; font-size: clamp(2.35rem, 11vw, 3.2rem); letter-spacing: -.04em; line-height: .98; }
    .dashboard-hero__copy > p:not(.eyebrow) { margin-bottom: 1.35rem; font-size: .88rem; line-height: 1.55; }
    .hero-actions { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); }
    .hero-actions .btn { width: 100%; }
    .dashboard-hero__visual { min-height: 0; }
    .stack-panel { min-height: 12.5rem; padding: 1rem; border-radius: .9rem; box-shadow: none; }
    .stack-panel__score { padding-block: 1.1rem; }
    .stack-panel__score strong { font-size: 3.8rem; }
    .stack-panel__domains span { min-height: 3.5rem; font-size: .55rem; }
    .metrics-rail { width: 100%; border-radius: .9rem; }
    .metric { min-height: 6.2rem; padding: .9rem 1rem; }
    .metric strong { font-size: 1.75rem; }
    .learning-library { padding-top: 3.5rem; }

    .section-heading,
    .page-heading { display: grid; align-items: start; gap: 1rem; }
    .heading-actions { justify-content: flex-start; }
    .course-card,
    .course-card:nth-child(n) { grid-template-columns: 1fr; }
    .course-card { min-height: 0; border-radius: 1.1rem; }
    .course-card__visual { min-height: 11.5rem; }
    .course-card__body { min-height: 13rem; }
    .course-card__monogram { font-size: 11rem; }
    .course-cover-editor { align-items: stretch; flex-direction: column; }
    .course-cover-editor > img { width: 100%; max-width: 18rem; }

    .course-hero { min-height: 32rem; padding: 1.7rem 1.3rem; border-radius: 1.3rem; }
    .course-hero h1 { font-size: clamp(2.7rem, 13vw, 4.5rem); }
    .course-edit-link { top: auto; right: 1.2rem; bottom: 1.2rem; }
    .course-progress-strip { width: calc(100% - 1rem); grid-template-columns: 1fr 1fr; }
    .course-progress-strip .progress-track { grid-column: 1 / -1; grid-row: 2; }
    .course-layout { padding-top: 4rem; }
    .lesson-card summary { grid-template-columns: auto 1fr; }
    .lesson-card__status { display: none; }
    .lesson-card summary::after { grid-column: 2; justify-self: end; }
    .lesson-card__title { grid-column: 2; grid-row: 1; padding-right: 2rem; }

    .grid-2,
    .grid-3,
    .grid-4 { grid-template-columns: 1fr; }
    .toolbar { align-items: flex-start; }
    .toolbar > div { width: 100%; }
    .table { display: block; overflow-x: auto; white-space: nowrap; }
    .table-scroll .table { overflow: visible; }
    .table .actions { text-align: left; }
    .answer-row { align-items: stretch; flex-direction: column; }
    .answer-row select { width: 100%; }
    .match-row { align-items: stretch; flex-direction: column; }
    .match-row .match-input { width: 100%; }
    .exam-bar { top: calc(var(--header-height) + .35rem); }
    .lesson-admin-card { grid-template-columns: auto 1fr; align-items: start; }
    .lesson-admin-card__actions { grid-column: 2; }
    .structured-class-callout { align-items: stretch; flex-direction: column; }
    .structured-class-callout .btn { width: 100%; }
    .mode-picker { grid-template-columns: 1fr; }
    .mode-card > span { min-height: 5.5rem; }
    .course-config-grid,
    .course-config-fields { grid-template-columns: 1fr; }
    .results-admin-filters { grid-template-columns: 1fr; }
    .result-meta { grid-template-columns: repeat(2, minmax(0, 1fr)); }
    .course-config-status,
    .course-config-save { align-items: stretch; flex-direction: column; }
    .course-config-save .btn { width: 100%; }
    .practice-part-score { align-items: stretch; flex-direction: column; }
    .practice-part-score dl { width: 100%; }
    .practice-part-score dl div { flex: 1; min-width: 0; }
    .practice-answer-comparison { grid-template-columns: 1fr; }
    .practice-result-part { align-items: flex-start; flex-direction: column; }
    .practice-review-item summary { padding-inline: .8rem; }
    .practice-review-content { padding: .85rem; }
    .course-group-table {
        display: grid;
        gap: .65rem;
        overflow: visible;
        border: 0;
        border-radius: 0;
    }
    .course-group-row--head { display: none; }
    .course-group-row {
        min-width: 0;
        grid-template-columns: repeat(2, minmax(0, 1fr));
        gap: .65rem;
        padding: .9rem;
        background: var(--surface);
        border: 1px solid var(--border);
        border-radius: .8rem;
    }
    .course-group-row:last-child { border-bottom: 1px solid var(--border); }
    .course-group-row > span:first-child { grid-column: 1 / -1; }
    .course-group-toggle {
        min-height: 2.75rem;
        padding: .65rem;
        background: var(--surface-soft);
        border: 1px solid var(--border);
        border-radius: .65rem;
    }
    .lesson-reader-head { grid-template-columns: 1fr auto; }
    .lesson-reader-head > div { grid-column: 1 / -1; grid-row: 1; justify-items: start; }
    .lesson-reader-head .back-link { grid-column: 1; grid-row: 2; }
    .lesson-reader-head > span:last-child { grid-column: 2; grid-row: 2; }
    .lesson-reader { padding: 1.35rem 1rem; border-radius: 1rem; }
    .lesson-reader > h1 { font-size: clamp(2.2rem, 11vw, 3.5rem); }
    .lesson-reader-nav .btn { min-width: 0; padding-inline: .8rem; }
    .install-banner { align-items: stretch; flex-direction: column; }
    .install-banner .install-actions { display: grid; grid-template-columns: 1fr 1fr; }
    .footer-inner { grid-template-columns: 1fr; }
    .footer-inner > p { grid-column: 1; grid-row: auto; }
    .footer-inner > a { justify-self: start; }
    .auth-shell { border-radius: var(--radius-md); }
    .auth-pitch { min-height: 22rem; padding: 4.8rem 1.3rem 3.5rem; }
    .auth-pitch h1 { font-size: 3.4rem; }
    .auth-shell .auth-card { padding: 1.5rem 1.25rem 2rem; }
    .auth-links { align-items: flex-start; flex-direction: column; }
}

@media (prefers-reduced-motion: reduce) {
    html { scroll-behavior: auto; }
    *,
    *::before,
    *::after {
        scroll-behavior: auto !important;
        animation-duration: .01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: .01ms !important;
    }
    [data-reveal] { opacity: 1; transform: none; }
}