* { margin: 0; padding: 0; box-sizing: border-box; }

:root {
    --paper: #f3ede0;
    --paper-2: #ece3d2;
    --card: #fbf7ee;
    --card-2: #f7f1e4;
    --ink: #251e15;
    --ink-soft: #6d6151;
    --ink-faint: #95897538;
    --line: #e4dac6;
    --line-strong: #d4c4a6;
    --terra: #b4471f;
    --terra-2: #c8542a;
    --pine: #3a6b56;
    --gold: #c08524;
    --danger: #b23a2a;
    --radius: 14px;
    --shadow-sm: 0 1px 2px rgba(70,45,20,.07);
    --shadow: 0 2px 4px rgba(70,45,20,.05), 0 16px 32px -18px rgba(80,50,20,.35);
    --font-display: 'Fraunces', Georgia, 'Times New Roman', serif;
    --font-body: 'Hanken Grotesk', -apple-system, BlinkMacSystemFont, system-ui, sans-serif;
}

html { -webkit-font-smoothing: antialiased; text-rendering: optimizeLegibility; scrollbar-gutter: stable; scroll-behavior: smooth; }

/* Custom scrollbars */
* { scrollbar-width: thin; scrollbar-color: var(--line-strong) transparent; }
::-webkit-scrollbar { width: 11px; height: 11px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb { background: var(--line-strong); border-radius: 10px; border: 3px solid transparent; background-clip: padding-box; }
::-webkit-scrollbar-thumb:hover { background: var(--terra); border: 3px solid transparent; background-clip: padding-box; }
::-webkit-scrollbar-corner { background: transparent; }
/* Smooth cross-page crossfade where supported (Chromium); ignored elsewhere */
@view-transition { navigation: auto; }

body {
    font-family: var(--font-body);
    background-color: var(--paper);
    color: var(--ink);
    min-height: 100vh;
    line-height: 1.55;
    position: relative;
    animation: pageFade .3s ease both;
}
@keyframes pageFade { from { opacity: 0; } to { opacity: 1; } }
/* Faint paper grain */
body::before {
    content: ""; position: fixed; inset: 0; z-index: 0; pointer-events: none; opacity: .5;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='160' height='160'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.85' numOctaves='2' stitchTiles='stitch'/%3E%3CfeColorMatrix type='saturate' values='0'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)' opacity='0.035'/%3E%3C/svg%3E");
}
body > * { position: relative; z-index: 1; }

a { color: inherit; text-decoration: none; }
::selection { background: rgba(180,71,31,.18); }

/* Topbar */
.topbar {
    position: sticky; top: 0; z-index: 20;
    background: rgba(243,237,224,.82);
    backdrop-filter: blur(10px) saturate(1.1);
    border-bottom: 1px solid var(--line);
}
.topbar-inner { max-width: 1140px; margin: 0 auto; padding: 0 28px; height: 66px; display: flex; align-items: center; gap: 26px; }
.brand {
    font-family: var(--font-display); font-weight: 600; font-size: 25px; letter-spacing: -0.4px;
    color: var(--ink); font-optical-sizing: auto;
}
.brand::first-letter { color: var(--terra); }
.topnav { display: flex; gap: 2px; }
.topnav a { padding: 8px 14px; border-radius: 9px; font-size: 14.5px; font-weight: 500; color: var(--ink-soft); transition: all .15s; }
.topnav a:hover { color: var(--ink); background: var(--paper-2); }
.topnav a.active { color: var(--terra); }
.topbar-right { margin-left: auto; display: flex; align-items: center; gap: 18px; }
.bell { position: relative; font-size: 17px; filter: grayscale(.3); opacity: .8; transition: .15s; }
.bell:hover { opacity: 1; transform: rotate(-8deg); }
.badge-count { position: absolute; top: -7px; right: -10px; background: var(--terra); color: #fff; font-size: 10px; font-weight: 700; min-width: 17px; height: 17px; padding: 0 4px; border-radius: 9px; display: inline-flex; align-items: center; justify-content: center; font-family: var(--font-body); }
.user-menu { display: flex; align-items: center; gap: 12px; font-size: 13.5px; }
.user-name { color: var(--ink); font-weight: 600; }
.logout-link { color: var(--ink-soft); }
.logout-link:hover { color: var(--terra); }

/* Layout */
.container { max-width: 1140px; margin: 0 auto; padding: 40px 28px 90px; }
.page-head { display: flex; align-items: flex-end; justify-content: space-between; gap: 18px; margin-bottom: 34px; flex-wrap: wrap; }
.page-head h1 { font-family: var(--font-display); font-weight: 600; font-size: 38px; line-height: 1.05; letter-spacing: -0.6px; font-optical-sizing: auto; }
.page-head .sub { color: var(--ink-soft); font-size: 14.5px; margin-top: 8px; }
.section { margin-bottom: 44px; }
.section-title {
    font-size: 12px; text-transform: uppercase; letter-spacing: 1.4px; color: var(--ink-soft);
    font-weight: 700; margin-bottom: 18px; padding-bottom: 9px; border-bottom: 1px solid var(--line);
    display: flex; align-items: center; gap: 8px;
}
.section-title::before { content: ""; width: 6px; height: 6px; background: var(--terra); border-radius: 50%; }

/* Landing hero */
.hero { padding: 54px 0 44px; max-width: 700px; }
.hero-title { font-family: var(--font-display); font-weight: 600; font-size: 58px; line-height: 1.02; letter-spacing: -1.6px; font-optical-sizing: auto; }
.hero-sub { font-size: 18px; color: var(--ink-soft); margin-top: 22px; line-height: 1.6; }
.hero-cta { display: flex; gap: 12px; margin-top: 30px; flex-wrap: wrap; }
.hero-cta .btn { padding: 12px 22px; font-size: 15px; }
.how-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); gap: 22px; }
.how-num { font-family: var(--font-display); font-size: 26px; color: var(--terra); font-weight: 500; }
.how-step h3 { font-family: var(--font-display); font-weight: 600; font-size: 18px; margin: 6px 0 5px; }
.how-step p { color: var(--ink-soft); font-size: 14px; }

/* Cards & grid */
.grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(290px, 1fr)); gap: 18px; }
.card { background: var(--card); border: 1px solid var(--line); border-radius: var(--radius); padding: 26px; box-shadow: var(--shadow-sm); }

.s-card {
    display: flex; flex-direction: column; gap: 9px; position: relative; overflow: hidden;
    transition: transform .2s cubic-bezier(.2,.7,.3,1), box-shadow .2s, border-color .2s;
    animation: rise .5s cubic-bezier(.2,.7,.3,1) backwards;
}
.s-card::before { content: ""; position: absolute; left: 0; top: 0; bottom: 0; width: 4px; background: linear-gradient(var(--terra), var(--gold)); opacity: 0; transition: opacity .2s; }
.s-card:hover { transform: translateY(-4px); box-shadow: var(--shadow); border-color: var(--line-strong); }
.s-card:hover::before { opacity: 1; }
.s-card .s-title { font-family: var(--font-display); font-weight: 600; font-size: 20px; line-height: 1.15; letter-spacing: -0.3px; }
.s-card .s-owner { font-size: 12.5px; color: var(--ink-soft); font-style: italic; }
.s-card .s-desc { font-size: 13.5px; color: var(--ink-soft); flex: 1; }
.s-card .s-meta { display: flex; gap: 10px; font-size: 12px; color: var(--ink-soft); align-items: center; flex-wrap: wrap; padding-top: 10px; margin-top: 2px; border-top: 1px dashed var(--line-strong); }
.s-card .s-meta span { display: inline-flex; align-items: center; gap: 5px; }
.s-card .s-actions { display: flex; gap: 8px; margin-top: 4px; }

/* Buttons */
.btn { display: inline-flex; align-items: center; justify-content: center; gap: 6px; padding: 10px 17px; border-radius: 10px; font-size: 14px; font-weight: 600; font-family: var(--font-body); border: none; cursor: pointer; transition: all .15s; white-space: nowrap; }
.btn-primary { background: var(--terra); color: #fdf3ec; box-shadow: 0 1px 0 rgba(255,255,255,.15) inset, var(--shadow-sm); }
.btn-primary:hover { background: var(--terra-2); transform: translateY(-1px); }
.btn-accent { background: var(--pine); color: #f1f7f3; }
.btn-accent:hover { filter: brightness(1.08); transform: translateY(-1px); }
.btn-ghost { background: transparent; color: var(--ink); border: 1px solid var(--line-strong); }
.btn-ghost:hover { border-color: var(--terra); color: var(--terra); }
.btn-danger { background: transparent; color: var(--danger); border: 1px solid color-mix(in srgb, var(--danger) 45%, transparent); }
.btn-danger:hover { background: var(--danger); color: #fff; }
.btn-sm { padding: 7px 13px; font-size: 13px; }
.btn-xs { padding: 4px 10px; font-size: 12px; border-radius: 8px; }
.btn-block { width: 100%; }

/* Forms */
input, textarea, select {
    background: var(--card-2); border: 1px solid var(--line-strong); color: var(--ink);
    padding: 11px 14px; border-radius: 10px; font-size: 14px; font-family: inherit; width: 100%; outline: none;
    transition: border-color .15s, box-shadow .15s;
}
input:focus, textarea:focus, select:focus { border-color: var(--terra); box-shadow: 0 0 0 3px rgba(180,71,31,.12); }
input::placeholder, textarea::placeholder { color: var(--ink-soft); opacity: .75; }
/* Dropdowns — drop the native chrome for a warm custom chevron that matches the palette. */
select {
    appearance: none; -webkit-appearance: none; -moz-appearance: none;
    cursor: pointer; padding-right: 40px;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='8' fill='none' stroke='%236d6151' stroke-width='1.7' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='M1 1.5l5 5 5-5'/%3E%3C/svg%3E");
    background-repeat: no-repeat; background-position: right 15px center; background-size: 12px 8px;
}
select:hover { border-color: var(--ink-soft); }
select:focus { background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='8' fill='none' stroke='%23b4471f' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='M1 1.5l5 5 5-5'/%3E%3C/svg%3E"); }
select option { color: var(--ink); background: var(--card); }
/* Toggle switch — replaces boolean checkboxes */
.toggle { display: flex; align-items: center; gap: 14px; cursor: pointer; user-select: none; font-size: 14.5px; color: var(--ink-soft); padding: 6px 0; line-height: 1.45; }
.toggle input { position: absolute; opacity: 0; width: 0; height: 0; }
.toggle .switch { position: relative; flex: none; width: 46px; height: 27px; background: var(--line-strong); border-radius: 999px; transition: background .22s ease; }
.toggle .switch::after { content: ""; position: absolute; top: 3px; left: 3px; width: 21px; height: 21px; background: #fff; border-radius: 50%; box-shadow: 0 1px 3px rgba(70,45,20,.28); transition: transform .24s cubic-bezier(.34,1.4,.6,1); }
.toggle input:checked + .switch { background: var(--terra); }
.toggle input:checked + .switch::after { transform: translateX(19px); }
.toggle input:focus-visible + .switch { outline: 2px solid var(--terra); outline-offset: 3px; }
.toggle:hover .switch { box-shadow: 0 0 0 4px rgba(180,71,31,.08); }
.toggle-hint { opacity: .75; }
/* Notification settings — two separate channels (in-app vs email). */
.notif-group { display: flex; flex-direction: column; gap: 2px; }
.notif-group + .notif-group { margin-top: 20px; padding-top: 20px; border-top: 1px solid var(--line); }
.notif-group-head { margin-bottom: 8px; }
.notif-group-title { display: block; font-size: 13.5px; font-weight: 700; color: var(--ink); letter-spacing: .2px; }
.notif-group-sub { display: block; font-size: 12.5px; color: var(--ink-soft); margin-top: 1px; }
.form-col { display: flex; flex-direction: column; gap: 17px; }
.form-row { display: flex; gap: 16px; align-items: flex-end; flex-wrap: wrap; }
.field { display: flex; flex-direction: column; gap: 7px; flex: 1; min-width: 150px; }
.field-label { font-size: 11.5px; text-transform: uppercase; letter-spacing: .5px; color: var(--ink-soft); font-weight: 700; }
.input-sm { max-width: 110px; }
.input-date { width: auto; max-width: 220px; }

/* Badges */
.badge { display: inline-flex; align-items: center; gap: 5px; padding: 3px 11px; border-radius: 30px; font-size: 11.5px; font-weight: 700; letter-spacing: .2px; }
.badge-success { background: rgba(58,107,86,.14); color: var(--pine); }
.badge-muted { background: rgba(109,97,81,.12); color: var(--ink-soft); }
.badge-primary { background: rgba(180,71,31,.13); color: var(--terra); }
.badge-warning { background: rgba(192,133,36,.16); color: var(--gold); }
.lock { color: var(--ink-soft); }

/* Premium tier — gold/terracotta pill + a subtle upsell lock for gated controls */
.premium-badge { display: inline-flex; align-items: center; gap: 4px; padding: 3px 11px; border-radius: 30px; font-size: 11.5px; font-weight: 700; letter-spacing: .2px; color: #fff; background: linear-gradient(120deg, var(--gold), var(--terra)); box-shadow: 0 1px 2px rgba(70,45,20,.18); }
.plan-row { display: flex; align-items: center; gap: 12px; flex-wrap: wrap; }
.plan-upsell { margin-top: 10px; font-size: 13.5px; color: var(--ink-soft); line-height: 1.5; }
.plan-upsell strong { color: var(--ink); }
.premium-lock { display: inline-flex; align-items: center; gap: 6px; padding: 4px 11px; border-radius: 30px; font-size: 11.5px; font-weight: 600; color: var(--gold); background: rgba(192,133,36,.1); border: 1px dashed rgba(192,133,36,.45); cursor: help; }
.premium-lock::before { content: "\1F512"; font-size: 11px; }

/* Private classroom — manage control + join gate */
.private-control { border-top: 1px solid var(--line); padding-top: 14px; margin-top: 2px; }
.private-fields { margin-top: 12px; padding-left: 4px; }
.private-fields code { background: rgba(109,97,81,.1); padding: 1px 6px; border-radius: 5px; font-size: 12.5px; word-break: break-all; }
.private-gate-card { margin-top: 8px; }
.private-gate-title { font-weight: 700; font-size: 16px; color: var(--ink); }

/* Weeks — table of contents */
.weeks { display: flex; flex-direction: column; gap: 0; }
.week {
    background: transparent; border-bottom: 1px solid var(--line); overflow: hidden;
    animation: rise .5s cubic-bezier(.2,.7,.3,1) backwards; scroll-margin-top: 90px;
}
@keyframes anchor-flash { 0%, 100% { background: transparent; } 30% { background: rgba(192,133,36,.14); } }
.week:target { animation: anchor-flash 1.6s ease; }
.weeks > .card, .week.card { border: 1px solid var(--line); border-radius: var(--radius); margin-bottom: 12px; background: var(--card); }
.week.locked { opacity: .82; }
.week-top { display: flex; align-items: center; gap: 18px; padding: 18px 8px; flex-wrap: wrap; }
.week-index {
    font-family: var(--font-display); font-weight: 500; font-size: 30px; color: var(--line-strong);
    font-optical-sizing: auto; min-width: 48px; line-height: 1; letter-spacing: -1px;
    font-variant-numeric: tabular-nums; transition: color .2s;
}
.week:hover .week-index { color: var(--terra); }
.week.locked .week-index { color: var(--line-strong); }
.week-main { flex: 1; min-width: 180px; display: flex; flex-direction: column; gap: 3px; }
.week-no { font-size: 11px; font-weight: 700; color: var(--ink-soft); text-transform: uppercase; letter-spacing: 1px; }
.week-title { font-family: var(--font-display); font-weight: 500; font-size: 18px; letter-spacing: -0.2px; }
.week-when { font-size: 12.5px; color: var(--ink-soft); display: inline-flex; align-items: center; gap: 6px; }
.week-right { display: flex; align-items: center; gap: 10px; flex-wrap: wrap; }
.seal { display: inline-flex; align-items: center; gap: 6px; font-size: 12px; font-weight: 700; color: var(--pine); }
.seal-dot { width: 9px; height: 9px; border-radius: 50%; background: var(--pine); box-shadow: 0 0 0 3px rgba(58,107,86,.18); }
.week-body { padding: 2px 8px 18px 74px; }
.res-list { list-style: none; display: flex; flex-direction: column; gap: 2px; }
.res-list li { display: flex; align-items: center; gap: 12px; font-size: 14px; padding: 7px 0; border-bottom: 1px dotted var(--line); }
.res-list li:last-child { border-bottom: none; }
.res-link { display: inline-flex; align-items: center; gap: 9px; color: var(--ink); font-weight: 500; transition: color .15s; }
.res-link:hover { color: var(--terra); }
.res-size { color: var(--ink-soft); font-size: 12px; }
.res-icon { color: var(--terra); }

/* Classroom */
.classroom { display: grid; grid-template-columns: 1fr 354px; gap: 24px; align-items: start; }
.classroom > .weeks { background: var(--card); border: 1px solid var(--line); border-radius: var(--radius); padding: 4px 14px; box-shadow: var(--shadow-sm); }
.classroom > .weeks .week:last-child { border-bottom: none; }
.chat { background: var(--card); border: 1px solid var(--line); border-radius: var(--radius); display: flex; flex-direction: column; height: min(480px, calc(100vh - 220px)); position: sticky; top: 90px; box-shadow: var(--shadow-sm); overflow: hidden; }
.chat-head { padding: 15px 18px; border-bottom: 1px solid var(--line); font-family: var(--font-display); font-weight: 600; font-size: 16px; display: flex; justify-content: space-between; align-items: center; background: var(--card-2); }
.chat-log { flex: 1; overflow-y: auto; padding: 16px 18px; display: flex; flex-direction: column; gap: 14px; }
.msg { display: flex; flex-direction: column; gap: 2px; }
.msg-head { font-size: 11.5px; color: var(--ink-soft); }
.msg-author { color: var(--terra); font-weight: 700; }
.msg-body { font-size: 14px; white-space: pre-wrap; word-break: break-word; }
.msg.mine .msg-author { color: var(--pine); }
.chat-form { display: flex; gap: 9px; padding: 13px; border-top: 1px solid var(--line); background: var(--card-2); }
.chat-form input { flex: 1; }
.char-count { align-self: center; min-width: 28px; text-align: right; font-size: 11px; color: var(--ink-soft); font-variant-numeric: tabular-nums; }
.char-count.warn { color: var(--danger); font-weight: 700; }
.chat-empty { color: var(--ink-soft); font-size: 13px; text-align: center; margin: auto 0; font-style: italic; }

/* Notifications */
.note-list { display: flex; flex-direction: column; gap: 8px; }
.note { display: flex; gap: 14px; padding: 16px 18px; border: 1px solid var(--line); border-radius: 12px; background: var(--card); align-items: flex-start; transition: border-color .15s; }
.note.unread { border-color: var(--terra); background: linear-gradient(var(--card), var(--card)) padding-box, linear-gradient(120deg, rgba(180,71,31,.08), transparent) border-box; }
.note-dot { width: 9px; height: 9px; border-radius: 50%; background: var(--terra); margin-top: 7px; flex-shrink: 0; }
.note-dot.read { background: var(--line-strong); }
.note-body { flex: 1; font-size: 14.5px; }
.note-time { font-size: 12px; color: var(--ink-soft); margin-top: 3px; }
.note-link { text-decoration: none; color: inherit; cursor: pointer; }
.note-link:hover { border-color: var(--terra); transform: translateY(-1px); }

/* Misc */
.text-muted { color: var(--ink-soft); }
.empty { text-align: center; padding: 54px 24px; color: var(--ink-soft); border: 1px dashed var(--line-strong); border-radius: var(--radius); font-style: italic; }
.row { display: flex; gap: 10px; align-items: center; flex-wrap: wrap; }
.spacer { flex: 1; }
code { background: var(--paper-2); padding: 2px 6px; border-radius: 5px; font-size: 13px; font-family: ui-monospace, monospace; }
.alert { padding: 12px 16px; border-radius: 10px; margin-bottom: 16px; font-size: 14px; }
.alert-error { background: rgba(178,58,42,.12); color: var(--danger); border: 1px solid rgba(178,58,42,.25); }
.flash { padding: 12px 16px; border-radius: 10px; margin-bottom: 20px; font-size: 14px; }
.flash.ok { background: rgba(58,107,86,.14); color: var(--pine); border: 1px solid rgba(58,107,86,.3); }
.verify-banner { display: flex; align-items: center; justify-content: space-between; gap: 12px; flex-wrap: wrap; background: rgba(192,133,36,.13); border: 1px solid rgba(192,133,36,.4); color: var(--ink); padding: 11px 16px; border-radius: 11px; margin-bottom: 22px; font-size: 14px; }
.verify-banner .btn { white-space: nowrap; }
.recur-builder { background: var(--card-2); border: 1px solid var(--line); border-radius: 14px; padding: 20px 22px; margin: 8px 0 6px; }
.recur-builder .form-row { align-items: flex-end; gap: 18px; }
.freq-unit { align-self: center; padding-bottom: 11px; white-space: nowrap; color: var(--ink-soft); }
.weekday-row { display: flex; align-items: center; gap: 10px; flex-wrap: wrap; margin-top: 20px; }
.weekday-row .field-label { margin: 0 6px 0 0; }
.day-chip { display: inline-flex; align-items: center; justify-content: center; min-width: 56px; padding: 10px 16px; border: 1.5px solid var(--line-strong); border-radius: 999px; font-size: 13.5px; font-weight: 500; color: var(--ink-soft); cursor: pointer; user-select: none; transition: all .16s ease; }
.day-chip input { position: absolute; opacity: 0; pointer-events: none; width: 0; height: 0; }
.day-chip:hover { border-color: var(--terra); color: var(--terra); transform: translateY(-1px); }
.day-chip:has(input:checked) { background: var(--terra); border-color: var(--terra); color: #fff; font-weight: 600; box-shadow: 0 3px 10px -3px rgba(180,71,31,.55); }

/* Auth */
.auth-wrap { min-height: 100vh; display: flex; align-items: center; justify-content: center; padding: 24px; }
.auth-card { background: var(--card); border: 1px solid var(--line); border-radius: 20px; padding: 44px; width: 100%; max-width: 410px; box-shadow: var(--shadow); animation: rise .55s cubic-bezier(.2,.7,.3,1) backwards; }
.auth-card .brand { font-size: 36px; display: block; text-align: center; margin-bottom: 6px; }
.auth-sub { color: var(--ink-soft); font-size: 14.5px; text-align: center; margin-bottom: 26px; font-style: italic; }
.ban-icon { font-size: 42px; text-align: center; margin: 4px 0 18px; line-height: 1; }
.auth-card form { display: flex; flex-direction: column; gap: 13px; }
.auth-alt { margin-top: 20px; font-size: 13.5px; color: var(--ink-soft); text-align: center; }
.auth-alt a { color: var(--terra); font-weight: 600; }

/* Toast */
.toast { position: fixed; bottom: 26px; right: 26px; background: var(--ink); color: var(--paper); border-radius: 12px; padding: 13px 19px; font-size: 14px; font-weight: 500; z-index: 1000; box-shadow: var(--shadow); animation: slideIn .25s cubic-bezier(.2,.7,.3,1); }
.toast-error { background: var(--danger); color: #fff; }

/* Number steppers */
input[type=number] { -moz-appearance: textfield; appearance: textfield; }
input[type=number]::-webkit-outer-spin-button, input[type=number]::-webkit-inner-spin-button { -webkit-appearance: none; margin: 0; }
.stepper { display: inline-flex; align-items: stretch; border: 1px solid var(--line-strong); border-radius: 10px; overflow: hidden; background: var(--card-2); }
.stepper input[type=number] { border: none; border-radius: 0; text-align: center; background: transparent; width: 58px; padding: 9px 2px; }
.stepper input[type=number]:focus { box-shadow: none; }
.step-btn { border: none; background: transparent; color: var(--terra); font-size: 18px; font-weight: 700; width: 34px; cursor: pointer; font-family: var(--font-body); line-height: 1; transition: background .12s; }
.step-btn:hover { background: rgba(180,71,31,.1); }

/* Upload control */
.upload-btn { display: inline-flex; align-items: center; gap: 7px; margin-top: 10px; padding: 9px 15px; border: 1px dashed var(--line-strong); border-radius: 10px; background: transparent; color: var(--ink-soft); font-size: 13.5px; font-weight: 600; font-family: var(--font-body); cursor: pointer; transition: all .15s; }
.upload-btn:hover { border-color: var(--terra); color: var(--terra); border-style: solid; background: rgba(180,71,31,.05); }
input[type=file]::file-selector-button { font-family: var(--font-body); background: var(--terra); color: #fff; border: none; padding: 8px 13px; border-radius: 8px; font-weight: 600; margin-right: 10px; cursor: pointer; }

/* Drag handle / reorder — the whole row is grabbable except its controls */
.drag-handle { color: var(--line-strong); font-size: 15px; letter-spacing: -4px; padding-right: 6px; user-select: none; align-self: center; transition: color .15s; }
#weeks-reorder .week { cursor: grab; }
#weeks-reorder .week:hover .drag-handle { color: var(--terra); }
#weeks-reorder .week input, #weeks-reorder .week button, #weeks-reorder .week select, #weeks-reorder .week a { cursor: auto; }
#weeks-reorder .week .week-rename { cursor: text; }
.week.dragging { opacity: .4; cursor: grabbing; }

/* Inline week rename */
.week-rename { font-family: var(--font-display); font-weight: 500; font-size: 18px; letter-spacing: -0.2px; color: var(--ink); background: transparent; border: 1px solid transparent; border-radius: 8px; padding: 3px 7px; margin-left: -7px; width: 100%; max-width: 440px; transition: all .15s; }
.week-rename:hover { border-color: var(--line); }
.week-rename:focus { border-color: var(--terra); background: var(--card-2); box-shadow: 0 0 0 3px rgba(180,71,31,.1); }

/* Grouped (consecutive) chat messages */
.msg.grouped { margin-top: -10px; }

/* Progress tracking */
.progress-wrap { display: flex; align-items: center; gap: 14px; margin-bottom: 26px; }
.progress-bar { flex: 1; height: 9px; background: var(--paper-2); border: 1px solid var(--line); border-radius: 20px; overflow: hidden; max-width: 440px; }
.progress-bar span { display: block; height: 100%; background: linear-gradient(90deg, var(--pine), var(--terra)); border-radius: 20px; transition: width .45s cubic-bezier(.2,.7,.3,1); min-width: 0; }
.progress-label { font-size: 13px; color: var(--ink-soft); font-weight: 600; white-space: nowrap; }
.progress-bar.mini { height: 6px; margin: 8px 0 2px; max-width: none; }
.done-toggle { background: transparent; border: 1px solid var(--line-strong); color: var(--ink-soft); padding: 5px 13px; border-radius: 20px; font-size: 12.5px; font-weight: 700; font-family: var(--font-body); cursor: pointer; transition: all .15s; }
.done-toggle:hover { border-color: var(--pine); color: var(--pine); }
.done-toggle.done { background: var(--pine); border-color: var(--pine); color: #f1f7f3; }
.week.completed .week-index { color: var(--pine); }

/* Resource preview modal */
.res-dl { color: var(--ink-soft); font-weight: 700; padding: 0 4px; }
.res-dl:hover { color: var(--terra); }
.preview-overlay { position: fixed; inset: 0; background: rgba(25,16,8,.62); backdrop-filter: blur(3px); display: flex; align-items: center; justify-content: center; z-index: 2000; padding: 28px; animation: pageFade .2s ease; }
.preview-modal { background: var(--card); border: 1px solid var(--line); border-radius: 14px; width: min(920px, 100%); height: min(86vh, 100%); display: flex; flex-direction: column; overflow: hidden; box-shadow: var(--shadow); }
.preview-head { display: flex; align-items: center; justify-content: space-between; gap: 12px; padding: 13px 18px; border-bottom: 1px solid var(--line); }
.preview-title { font-family: var(--font-display); font-weight: 600; font-size: 16px; }
.preview-close { background: none; border: none; font-size: 26px; line-height: 1; color: var(--ink-soft); cursor: pointer; }
.preview-close:hover { color: var(--terra); }
.preview-frame { flex: 1; width: 100%; border: none; background: #fff; }
.preview-foot { padding: 11px 18px; border-top: 1px solid var(--line); text-align: right; }

/* Quizzes — manage authoring */
.quiz-manage { margin-top: 16px; padding-top: 14px; border-top: 1px dashed var(--line-strong); }
.quiz-manage-head { display: flex; align-items: baseline; gap: 10px; margin-bottom: 8px; }
.quiz-label { font-size: 11px; font-weight: 700; color: var(--ink-soft); text-transform: uppercase; letter-spacing: 1px; }
.quiz-qlist { list-style: none; display: flex; flex-direction: column; gap: 10px; margin-bottom: 4px; }
.quiz-q { border: 1px solid var(--line); border-radius: 12px; padding: 13px 15px; background: var(--card-2); }
.quiz-q-row { display: flex; align-items: flex-start; gap: 12px; }
.quiz-q-text { flex: 1; font-weight: 600; font-size: 14.5px; }
.quiz-q-actions { display: inline-flex; gap: 6px; flex-shrink: 0; }
.quiz-q-opts { list-style: none; margin: 9px 0 0; padding: 0; display: flex; flex-direction: column; gap: 3px; }
.quiz-q-opts li { font-size: 13.5px; color: var(--ink-soft); padding-left: 16px; position: relative; }
.quiz-q-opts li::before { content: "○"; position: absolute; left: 0; color: var(--line-strong); }
.quiz-q-opts li.correct { color: var(--pine); font-weight: 600; }
.quiz-q-opts li.correct::before { content: "●"; color: var(--pine); }
/* Collapsible question rows for the creator — click a question to reveal its options (mirrors how
   learners open a quiz). Editing/draft rows opt out via .quiz-q-editing. */
.quiz-q:not(.quiz-q-editing) .quiz-q-row { cursor: pointer; }
.quiz-q-caret { flex: none; width: 13px; margin-top: 4px; color: var(--ink-soft); font-size: 10px; line-height: 1; transition: transform .18s ease; user-select: none; }
.quiz-q.open .quiz-q-caret { transform: rotate(90deg); }
.quiz-q:not(.quiz-q-editing) .quiz-q-row:hover .quiz-q-text { color: var(--terra); }
.quiz-q:not(.open):not(.quiz-q-editing) .quiz-q-opts { display: none; }
.quiz-q-collapsing { overflow: hidden; }
.quiz-correct-tag { font-size: 11px; font-weight: 700; letter-spacing: .2px; }
.quiz-editor { display: flex; flex-direction: column; gap: 13px; }
.quiz-opts { display: flex; flex-direction: column; gap: 8px; }
.quiz-opt-rows { display: flex; flex-direction: column; gap: 7px; }
.quiz-opt-row { display: flex; align-items: center; gap: 10px; }
.quiz-opt-row .quiz-opt-correct { width: auto; flex: none; accent-color: var(--pine); cursor: pointer; }
.quiz-opt-row .quiz-opt-text { flex: 1; }
.quiz-opt-del { flex: none; padding: 4px 9px; }
.quiz-add-opt { margin-top: 2px; }
.quiz-editor-actions { margin-top: 2px; }

/* Quizzes — AI generation (premium owner) */
.quiz-actions { display: flex; flex-wrap: wrap; gap: 10px; align-items: center; }
.ai-gen-btn { border-color: rgba(192,133,36,.5); color: var(--gold); }
.ai-gen-btn:hover { border-color: var(--gold); color: var(--gold); border-style: solid; background: rgba(192,133,36,.07); }
.ai-gen-form { margin-top: 12px; padding: 14px 15px; border: 1px dashed rgba(192,133,36,.5); border-radius: 12px; background: rgba(192,133,36,.05); display: flex; flex-direction: column; gap: 12px; }
.ai-gen-form .ai-gen-source { resize: vertical; min-height: 64px; font-family: var(--font-body); }
.ai-gen-hint { font-size: 13px; color: var(--ink-soft); line-height: 1.5; }
.ai-gen-controls { gap: 14px; align-items: flex-end; flex-wrap: wrap; }
.ai-gen-count-field { max-width: 150px; }
.ai-gen-actions { gap: 8px; }
.ai-gen-busy { opacity: .7; pointer-events: none; }
.ai-gen-go::before { content: ""; }
.ai-gen-busy .ai-gen-go { position: relative; }

/* ===== AI features — shared warm gold accent ===== */
.ai-spark { color: var(--gold); }

/* Resource AI summary (classroom) */
li.res-item { flex-direction: column; align-items: stretch; gap: 6px; }
.res-row { display: flex; align-items: center; gap: 12px; }
.res-summary { font-size: 13px; }
.res-summary-toggle { cursor: pointer; color: var(--gold); font-weight: 600; font-size: 12.5px; list-style: none; display: inline-flex; align-items: center; gap: 5px; padding: 2px 0; user-select: none; width: fit-content; }
.res-summary-toggle::-webkit-details-marker { display: none; }
.res-summary-toggle::marker { content: ""; }
.res-summary-toggle:hover { color: var(--terra); }
.res-summary[open] .res-summary-toggle { margin-bottom: 7px; }
.res-summary-body { color: var(--ink-soft); line-height: 1.6; padding: 0 0 4px 2px; }
.res-summary-body p { margin: 0 0 9px; }
.res-terms { display: flex; flex-wrap: wrap; gap: 6px; }
.res-term { font-size: 11.5px; font-weight: 600; color: var(--pine); background: rgba(58,107,86,.1); border: 1px solid rgba(58,107,86,.22); border-radius: 999px; padding: 2px 10px; }

/* Quiz answer explanation (revealed after grading) — structured: overview + per-option reasons */
.quiz-explain { margin-top: 11px; padding: 10px 13px; background: rgba(192,133,36,.07); border-left: 3px solid var(--gold); border-radius: 0 8px 8px 0; font-size: 13.5px; line-height: 1.55; }
.quiz-explain-label { font-weight: 700; color: var(--gold); margin-right: 7px; white-space: nowrap; }
.quiz-explain-text { color: var(--ink-soft); }
.quiz-explain.loading .quiz-explain-text { opacity: .6; font-style: italic; }
.quiz-explain-opts { list-style: none; margin: 9px 0 0; padding: 0; display: flex; flex-direction: column; gap: 7px; }
.quiz-explain-opts li { display: flex; gap: 8px; align-items: baseline; }
.quiz-explain-mark { flex: none; font-weight: 700; font-size: 13px; line-height: 1.4; }
.quiz-explain-opts li.opt-correct .quiz-explain-mark { color: var(--pine); }
.quiz-explain-opts li.opt-wrong .quiz-explain-mark { color: var(--danger); }
.quiz-explain-opt-detail { display: flex; flex-direction: column; gap: 1px; }
.quiz-explain-opt-text { font-weight: 600; color: var(--ink); }
.quiz-explain-opt-reason { color: var(--ink-soft); }

/* Ask-the-week tutor (classroom) */
.tutor { margin-top: 13px; }
.tutor-toggle { background: none; border: 1px dashed rgba(192,133,36,.5); color: var(--gold); font-weight: 600; font-size: 13px; padding: 7px 13px; border-radius: 10px; cursor: pointer; transition: all .15s; font-family: var(--font-body); }
.tutor-toggle:hover { background: rgba(192,133,36,.08); border-style: solid; }
.tutor-panel { margin-top: 10px; border: 1px solid var(--line); border-radius: 12px; padding: 12px; background: var(--card-2); }
.tutor-log { display: flex; flex-direction: column; gap: 9px; max-height: 340px; overflow-y: auto; }
.tutor-log:not(:empty) { margin-bottom: 11px; }
.tutor-msg { font-size: 13.5px; line-height: 1.5; padding: 9px 12px; border-radius: 13px; max-width: 88%; white-space: pre-wrap; }
.tutor-msg-you { align-self: flex-end; background: var(--terra); color: #fdf3ec; border-bottom-right-radius: 4px; }
.tutor-msg-ai { align-self: flex-start; background: var(--card); border: 1px solid var(--line); border-bottom-left-radius: 4px; color: var(--ink); }
.tutor-msg-ai.loading .tutor-msg-text { opacity: .6; font-style: italic; }
.tutor-msg-ai.error { color: var(--danger); border-color: rgba(178,58,42,.3); }
.tutor-form { display: flex; gap: 8px; }
.tutor-input { flex: 1; }

/* AI quiz review (manage) */
.quiz-review { margin-top: 12px; padding: 14px 15px; border: 1px dashed rgba(192,133,36,.5); border-radius: 12px; background: rgba(192,133,36,.05); display: flex; flex-direction: column; gap: 9px; }
.quiz-review-head { font-weight: 700; font-size: 13px; color: var(--gold); }
.quiz-review-item { font-size: 13px; padding: 9px 11px; border-radius: 9px; background: var(--card); border: 1px solid var(--line); border-left: 3px solid var(--pine); }
.quiz-review-item.weak { border-left-color: var(--gold); }
.quiz-review-q { font-weight: 600; color: var(--ink); display: flex; gap: 7px; align-items: baseline; }
.quiz-review-badge { font-size: 11px; font-weight: 700; flex: none; }
.quiz-review-item.good .quiz-review-badge { color: var(--pine); }
.quiz-review-item.weak .quiz-review-badge { color: var(--gold); }
.quiz-review-rationale { color: var(--ink-soft); margin-top: 5px; }
/* Accept/reject edit suggestion */
.quiz-review-suggested { margin-top: 9px; padding: 9px 11px; background: rgba(58,107,86,.06); border: 1px solid rgba(58,107,86,.2); border-radius: 8px; }
.quiz-review-suggested.applied { opacity: .7; }
.quiz-review-suggested-label { font-size: 11px; font-weight: 700; letter-spacing: .2px; text-transform: uppercase; color: var(--pine); margin-bottom: 5px; }
.quiz-review-suggested-q { font-weight: 600; color: var(--ink); }
.quiz-review-suggested-opts { margin: 6px 0 0; padding-left: 20px; color: var(--ink-soft); display: flex; flex-direction: column; gap: 2px; }
.quiz-review-suggested-opts li.correct { color: var(--pine); font-weight: 600; }
.quiz-review-suggested-actions { display: flex; gap: 8px; margin-top: 9px; align-items: center; }
.quiz-review-applied { color: var(--pine); font-weight: 700; font-size: 12.5px; }

/* AI syllabus scaffolding (create) */
.scaffold-card { border: 1px dashed rgba(192,133,36,.5); background: rgba(192,133,36,.05); margin-bottom: 16px; }
.scaffold-head { font-weight: 700; color: var(--gold); margin-bottom: 6px; }
.scaffold-sub { font-size: 12.5px; color: var(--ink-soft); margin-bottom: 12px; line-height: 1.5; }

/* Admin flagged messages */
.flag-body { font-size: 13.5px; color: var(--ink); margin-top: 5px; font-style: italic; }
.flag-reason { font-size: 13px; color: var(--ink-soft); }
.badge-danger { background: rgba(178,58,42,.14); color: var(--danger); }

/* Quizzes — classroom take */
.quiz-take-btn { background: transparent; border: 1px solid var(--line-strong); color: var(--ink-soft); padding: 5px 13px; border-radius: 20px; font-size: 12.5px; font-weight: 700; font-family: var(--font-body); cursor: pointer; transition: all .15s; }
.quiz-take-btn:hover { border-color: var(--terra); color: var(--terra); }
.quiz-best { white-space: nowrap; }
.quiz-modal { width: min(640px, 100%); height: auto; max-height: min(86vh, 100%); }
.quiz-body { flex: 1; overflow-y: auto; padding: 18px 22px; display: flex; flex-direction: column; gap: 18px; }
.quiz-take-q { border: 1px solid var(--line); border-radius: 12px; padding: 14px 16px; background: var(--card-2); transition: border-color .2s; }
.quiz-take-q.q-correct { border-color: color-mix(in srgb, var(--pine) 55%, transparent); }
.quiz-take-q.q-wrong { border-color: color-mix(in srgb, var(--danger) 45%, transparent); }
.quiz-take-qtext { font-weight: 600; font-size: 15px; margin-bottom: 11px; }
.quiz-take-opt { display: flex; align-items: center; gap: 11px; padding: 8px 11px; border-radius: 9px; cursor: pointer; font-size: 14px; transition: background .12s; }
.quiz-take-opt:hover { background: rgba(180,71,31,.05); }
.quiz-take-opt input { width: auto; flex: none; accent-color: var(--terra); cursor: pointer; }
.quiz-take-opt.opt-correct { background: rgba(58,107,86,.13); color: var(--pine); font-weight: 600; }
.quiz-take-opt.opt-wrong { background: rgba(168,69,63,.12); color: var(--danger); }
.quiz-foot { display: flex; align-items: center; justify-content: space-between; gap: 12px; text-align: left; }
.quiz-status { font-size: 13.5px; font-weight: 600; color: var(--ink-soft); }

/* Avatars & account */
.avatar { display: inline-flex; align-items: center; justify-content: center; border-radius: 50%; color: #fff; font-weight: 700; font-family: var(--font-body); flex-shrink: 0; line-height: 1; letter-spacing: .3px; }
.user-link { display: inline-flex; align-items: center; gap: 8px; }
.user-link:hover .user-name { color: var(--terra); }
.avatar-stack { display: inline-flex; align-items: center; }
.avatar-stack .avatar, .avatar-stack .avatar.more { margin-left: -7px; border: 2px solid var(--card-2); }
.avatar-stack .avatar:first-child { margin-left: 0; }
.avatar.more { background: var(--line-strong); color: var(--ink); width: 24px; height: 24px; font-size: 11px; }
.msg-head .avatar { margin-right: 6px; vertical-align: middle; }
.account-head { display: flex; align-items: center; gap: 18px; margin-bottom: 32px; }
.account-name { font-family: var(--font-display); font-weight: 600; font-size: 24px; }
img.avatar { object-fit: cover; }
.avatar-stack a { display: inline-flex; }
.avatar-stack a:not(:first-child) .avatar { margin-left: -7px; }
.msg-userlink { display: inline-flex; align-items: center; text-decoration: none; color: inherit; }
.msg-userlink:hover .msg-author { text-decoration: underline; }
.avatar-upload { position: relative; width: 116px; height: 116px; flex-shrink: 0; }
.avatar-edit { position: absolute; right: 2px; bottom: 2px; width: 34px; height: 34px; border-radius: 50%; background: var(--terra); color: #fff; display: flex; align-items: center; justify-content: center; cursor: pointer; border: 3px solid var(--card); font-size: 16px; box-shadow: var(--shadow-sm); }
.avatar-edit:hover { background: var(--terra-2); }
.profile-head { display: flex; align-items: center; gap: 22px; margin-bottom: 34px; flex-wrap: wrap; }
.profile-name { font-family: var(--font-display); font-weight: 600; font-size: 26px; }
.profile-bio { color: var(--ink-soft); font-size: 14.5px; margin: 8px 0 0; max-width: 560px; line-height: 1.55; white-space: pre-wrap; }
.profile-stats { display: flex; gap: 28px; margin-top: 18px; flex-wrap: wrap; }
.stat { display: flex; flex-direction: column; gap: 2px; }
.stat-num { font-family: var(--font-display); font-weight: 600; font-size: 22px; color: var(--terra); line-height: 1; }
.stat-lbl { font-size: 11.5px; color: var(--ink-soft); text-transform: uppercase; letter-spacing: .4px; }
/* Discover search */
.search-bar { display: flex; align-items: center; gap: 11px; background: var(--card); border: 1.5px solid var(--line-strong); border-radius: 999px; padding: 3px 20px; margin-bottom: 28px; max-width: 540px; transition: border-color .15s, box-shadow .15s; }
.search-bar:focus-within { border-color: var(--terra); box-shadow: 0 0 0 3px rgba(180,71,31,.1); }
.search-icon { color: var(--ink-soft); font-size: 15px; line-height: 1; }
.search-bar input { border: none; background: transparent; padding: 11px 0; font-size: 15px; }
.search-bar input:focus { box-shadow: none; }
/* Participant list */
.participant-list { display: flex; flex-direction: column; gap: 2px; }
.participant { display: flex; align-items: center; gap: 14px; padding: 11px 12px; border-radius: 12px; text-decoration: none; color: inherit; transition: background .14s; }
.participant:hover { background: var(--card-2); }
.participant-info { flex: 1; min-width: 0; }
.participant-name { font-weight: 600; font-size: 14.5px; }
.participant-prog { font-size: 12.5px; color: var(--ink-soft); }
.participant-bar { max-width: 130px; margin: 0; flex-shrink: 0; }
.participant-avatar { display: inline-flex; flex-shrink: 0; }
.plain-link { color: inherit; text-decoration: none; }
.plain-link:hover { color: var(--terra); }
.note-inline-link { color: var(--terra); font-weight: 600; }

/* Nav links with a count badge (Messages / Friends) */
.nav-count { position: relative; }
.nav-count .badge-count { top: 0; right: -2px; }

/* Messages — conversation list */
.convo { border: 1px solid var(--line); margin-bottom: 8px; padding: 13px 15px; }
.convo:hover { background: var(--card-2); border-color: var(--terra); transform: translateY(-1px); }
.convo.unread .participant-name { color: var(--ink); }
.convo.unread .convo-preview { color: var(--ink); font-weight: 500; }
.convo-preview { font-size: 13px; color: var(--ink-soft); margin-top: 2px; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; max-width: 52ch; }
.convo-you { color: var(--ink-soft); }
.convo-side { display: flex; flex-direction: column; align-items: flex-end; gap: 6px; flex-shrink: 0; }
.convo-time { font-size: 11.5px; color: var(--ink-soft); font-variant-numeric: tabular-nums; }
.convo-badge { position: static; }

/* DM conversation page */
.dm-head-user { display: flex; align-items: center; gap: 14px; }
.dm-head-user h1 { font-size: 30px; }
.dm-chat { position: static; height: min(560px, calc(100vh - 240px)); }
/* Admin */
.admin-stats { display: grid; grid-template-columns: repeat(auto-fit, minmax(118px, 1fr)); gap: 14px; margin-bottom: 32px; }
.stat-card { background: var(--card); border: 1px solid var(--line); border-radius: 14px; padding: 18px 20px; display: flex; flex-direction: column; gap: 4px; box-shadow: var(--shadow-sm); }
.stat-card.flagged { border-color: var(--danger); background: rgba(178,58,42,.05); }
.stat-card .stat-num { font-size: 28px; }
.admin-list { display: flex; flex-direction: column; }
.admin-row { display: flex; align-items: center; gap: 14px; padding: 13px 4px; border-bottom: 1px solid var(--line); flex-wrap: wrap; }
.admin-row:last-child { border-bottom: none; }

@keyframes rise { from { opacity: 0; transform: translateY(14px); } to { opacity: 1; transform: translateY(0); } }
@keyframes slideIn { from { transform: translateY(16px); opacity: 0; } to { transform: translateY(0); opacity: 1; } }
@media (prefers-reduced-motion: reduce) { * { animation: none !important; transition: none !important; } }

@media (max-width: 860px) {
    .classroom { grid-template-columns: 1fr; }
    .chat { height: 520px; position: static; }
    .page-head h1 { font-size: 30px; }
    .week-body { padding-left: 8px; }
    .hero-title { font-size: 40px; }
    .hero-sub { font-size: 16px; }
}