:root{
  --bg:#fdfefe; --card:#ffffff; --text:#0b1b0b; --muted:#6b7280;
  --primary:#1bb34a; --accent:#34c759; --danger:#c62828; --chip:#eafaf0; --btn:#1bb34a;
  --icon-color:#1b5ad7; --surface-elevated:#ffffff; --border-subtle:rgba(15,23,42,.08);
  --toggle-track:var(--card); --toggle-knob:#ffffff; --toggle-icon:var(--muted);
  --dropdown-shadow:0 12px 24px rgba(0,0,0,.18);
}
html[data-theme="dark"]{
  --bg:#0a0f0a; --card:#101510; --text:#e6ffe6; --muted:#9fb0b3;
  --primary:#39ff14; --accent:#00e676; --chip:#0f1710; --btn:#172517;
  --icon-color:#39ff14; --surface-elevated:rgba(16,21,16,.98); --border-subtle:rgba(230,255,230,.14);
  --toggle-track:var(--card); --toggle-knob:#f8fff8; --toggle-icon:#c7e8c7;
  --dropdown-shadow:0 18px 32px rgba(0,0,0,.6);
}
*{box-sizing:border-box}
body.body{margin:0;background:var(--bg);color:var(--text);font:16px/1.5 ui-sans-serif,system-ui,-apple-system,Segoe UI,Roboto}
.topbar{position:sticky;top:0;background:var(--card);border-bottom:1px solid rgba(0,0,0,.06);
  display:flex;justify-content:space-between;align-items:center;padding:12px 16px;z-index:10}
.brand{font-weight:800;color:var(--primary);display:flex;align-items:center;gap:8px}
.brand .tagline{font-weight:500;font-size:14px;margin-left:8px;color:var(--muted)}
.logo-hex{width:18px;height:18px;background:var(--primary);clip-path:polygon(25% 6.7%,75% 6.7%,100% 50%,75% 93.3%,25% 93.3%,0 50%)}
.left{display:flex;gap:16px;align-items:center}
.nav{display:flex;gap:8px;align-items:center}
.nav-link{display:flex;align-items:center;gap:6px;padding:6px 10px;border-radius:10px;text-decoration:none;color:var(--text);font-weight:500;position:relative}
.nav-link:hover{background:rgba(0,0,0,.05)}
.icon{width:18px;height:18px;fill:var(--icon-color);flex-shrink:0}
h1 .icon{margin-right:8px;vertical-align:middle}
.nav-link span{display:inline-flex;align-items:center;gap:6px}
.nav-dot{position:absolute;top:6px;right:6px;width:8px;height:8px;border-radius:50%;background:var(--danger);box-shadow:0 0 0 2px var(--card)}
.nav-bottom{display:none}
.dropdown-label{display:flex;align-items:center;gap:6px;font-weight:500;color:var(--text)}
.container{max-width:1060px;margin:18px auto;padding:0 16px}
.card{background:var(--card);border:1px solid rgba(0,0,0,.08);border-radius:16px;padding:16px}
.inner-card{margin-top:16px}
.muted{color:var(--muted)}
.visually-hidden{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}
.btn{display:inline-block;background:var(--btn);color:#fff;border:none;border-radius:12px;padding:10px 14px;text-decoration:none;cursor:pointer;transition:filter .2s ease,transform .2s ease}
.btn:hover{filter:brightness(.95)} .btn.outline{background:transparent;border:1px solid var(--primary);color:var(--primary)} .btn.strong{background:var(--primary)}
.btn:disabled{opacity:.5;cursor:not-allowed;filter:none;transform:none}
.btn.resend{width:100%;background:var(--card);color:var(--text);border:1px dashed var(--accent)}
.btn.resend:hover{filter:brightness(1.02);transform:translateY(-1px)}
.btn.resend:disabled{background:rgba(0,0,0,.08);color:var(--muted);border-color:rgba(0,0,0,.08)}
.page-title-row{display:flex;align-items:center;justify-content:space-between;gap:12px;flex-wrap:wrap;margin-bottom:16px}
.page-title-row h1{margin:0;display:flex;align-items:center;gap:8px}
.page-title-row .btn{display:flex;align-items:center;gap:6px}
.form{display:grid;gap:12px} .form.narrow{max-width:420px}
.onboarding-card{gap:20px}
.onboarding-head{display:grid;gap:8px;text-align:left}
.onboarding-head h1{margin:0;font-size:28px}
.onboarding-note{margin:0;color:var(--muted);font-size:15px}
.onboarding-actions{display:flex;justify-content:flex-end}
.onboarding-actions .btn{min-width:160px}
.onboarding-suggestions{display:grid;gap:8px}
.chip-list{display:flex;flex-wrap:wrap;gap:8px}
.chip{display:inline-flex;align-items:center;gap:6px;padding:8px 14px;border-radius:999px;background:var(--chip);border:none;color:var(--primary);font-weight:600;cursor:pointer;transition:filter .2s ease}
.chip:hover{filter:brightness(.96)}
.chip:focus-visible{outline:2px solid var(--primary);outline-offset:2px}
.form.verify-form{gap:16px}
.remember{display:flex;align-items:center;gap:8px}
input,select,textarea{padding:10px 12px;border:1px solid #cbd5e1;border-radius:10px;background:transparent;color:var(--text)}
html[data-theme="dark"] input,html[data-theme="dark"] select,html[data-theme="dark"] textarea{background:rgba(255,255,255,.04);border-color:rgba(230,255,230,.18);color:var(--text)}
.feed{display:grid;gap:16px} .post-h{display:flex;gap:12px;align-items:center}
.row{display:flex;gap:24px;align-items:flex-start} .col{flex:1} .avatar-col{max-width:220px;text-align:center}
.avatar{width:160px;height:160px;object-fit:cover;border-radius:999px;border:2px solid #e5e7eb}
.avatar-mini{width:40px;height:40px;border-radius:999px;object-fit:cover}
.file-btn{position:relative;overflow:hidden} .file-btn input[type=file]{position:absolute;inset:0;opacity:0;cursor:pointer}
.flash-wrap{display:grid;gap:8px;margin-bottom:12px} .flash{padding:10px 12px;border-radius:10px}
.flash.ok{background:#e8f5e9;border:1px solid #a5d6a7} .flash.error{background:#ffebee;border:1px solid #ef9a9a}
.login-centered{display:grid;place-items:center;min-height:70vh} .login-card{width:360px}
.forgot-link{justify-self:flex-end;font-size:14px}
.forgot-link a{color:var(--primary);text-decoration:none;font-weight:600}
.forgot-link a:hover{text-decoration:underline}
.grid-2{display:grid;grid-template-columns:repeat(2,minmax(240px,1fr));gap:16px}
.role.v2{display:grid;gap:8px;align-content:center;text-align:center;border:1px dashed var(--accent)}
.searchbar{display:flex;gap:8px;margin:8px 0;align-items:stretch}
.search-input-wrap{position:relative;flex:1}
.search-input-wrap input{width:100%}
.search-header{display:flex;align-items:center;justify-content:space-between;gap:12px}
.search-controls{display:none}
.filter-button{display:flex;align-items:center;gap:6px}
.grid-cards{display:grid;gap:16px}
.icon-btn{background:transparent;border:none;cursor:pointer;padding:6px;border-radius:10px}
.icon-btn:hover{background:rgba(0,0,0,.06)}
.filter-modal{position:fixed;inset:0;z-index:50;display:none;place-items:center}
.filter-modal.is-open{display:grid}
.filter-backdrop{position:absolute;inset:0;background:rgba(0,0,0,.4)}
.filter-panel{position:relative;z-index:1;background:var(--card);border-radius:16px;box-shadow:var(--dropdown-shadow);width:min(520px,92vw);max-height:90vh;display:grid;grid-template-rows:auto 1fr auto}
.filter-head{display:flex;align-items:center;justify-content:space-between;padding:16px 18px;border-bottom:1px solid rgba(0,0,0,.08)}
.filter-body{padding:16px 18px;display:grid;gap:16px;overflow:auto}
.filter-block h4{margin:0 0 10px 0}
.price-range{display:grid;grid-template-columns:repeat(2,minmax(120px,1fr));gap:12px}
.price-range .field{min-width:0}
.price-range input{width:100%}
.filter-actions{display:flex;justify-content:flex-end;gap:10px;padding:14px 18px;border-top:1px solid rgba(0,0,0,.08)}
.pager{display:flex;justify-content:center;gap:8px;margin:16px 0}
.pager button{border:1px solid rgba(0,0,0,.12);background:var(--card);padding:8px 12px;border-radius:10px;cursor:pointer}
.pager button:disabled{opacity:.5;cursor:not-allowed}
.search-suggest{position:absolute;top:calc(100% + 4px);left:0;right:0;background:var(--card);border:1px solid rgba(0,0,0,.12);border-radius:12px;box-shadow:0 12px 24px rgba(0,0,0,.12);z-index:5;max-height:calc(5 * 64px + 16px);overflow-y:auto;padding:6px;display:flex;flex-direction:column;scrollbar-width:thin;scrollbar-color:var(--primary) transparent}
.search-suggest.scrollable{padding-right:10px}
.search-suggest::-webkit-scrollbar{width:8px}
.search-suggest::-webkit-scrollbar-track{background:transparent;border-radius:12px}
.search-suggest::-webkit-scrollbar-thumb{background:var(--primary);border-radius:12px}
.subject-picker{display:grid;gap:8px;border:1px solid rgba(0,0,0,.12);border-radius:12px;padding:10px;background:var(--card)}
.subject-search{width:100%;border-radius:10px}
.subject-list{display:grid;gap:6px;max-height:220px;overflow:auto;padding-right:4px}
.subject-item{display:flex;align-items:center;gap:8px;padding:6px 8px;border-radius:10px;cursor:pointer}
.subject-item:hover{background:rgba(0,0,0,.05)}
.subject-item input{margin:0}
.search-suggest[hidden]{display:none}
.suggest-list{display:grid;gap:6px}
.suggest-item{display:flex;align-items:center;gap:10px;padding:8px;border-radius:10px;background:rgba(0,0,0,.03);border:none;width:100%;text-align:left;font-weight:600;color:var(--text);cursor:pointer;min-height:56px}
.suggest-item .avatar-mini{width:32px;height:32px}
.suggest-item small{display:block;font-weight:500;color:var(--muted)}
.suggest-item.has-course{background:rgba(27,179,74,.12)}
.suggest-item:focus-visible,.suggest-item:hover{outline:none;background:rgba(27,179,74,.18)}
.grid-cards{display:grid;grid-template-columns:repeat(auto-fit,minmax(260px,1fr));gap:12px}
.card.person{display:flex;flex-direction:column;gap:12px;text-decoration:none;color:var(--text);transition:transform .15s ease,box-shadow .15s ease}
.card.person:hover{transform:translateY(-2px);box-shadow:0 12px 24px rgba(0,0,0,.16)}
.person-row{display:flex;align-items:center;gap:12px}
.person-actions{display:flex;align-items:center;justify-content:space-between;gap:10px;font-size:14px;font-weight:600;color:var(--primary)}
.person-actions a{display:flex;align-items:center;gap:6px;color:inherit;text-decoration:none;justify-content:space-between}
.person-actions .btn{font-size:13px;padding:8px 10px}
.person-actions .icon{width:16px;height:16px}
.course-card{position:relative;overflow:hidden}
.course-card-header{position:relative}
.course-thumb{border-radius:12px;background-size:cover;background-position:center;height:160px;position:relative;overflow:hidden;display:grid;place-items:center;padding:12px;text-align:center;color:var(--muted);border:1px solid rgba(0,0,0,.08);text-decoration:none}
.course-thumb-placeholder{font-weight:600}
.course-count{position:absolute;left:12px;bottom:12px;background:rgba(0,0,0,.75);color:#fff;padding:4px 10px;border-radius:999px;font-size:12px;font-weight:600}
.price-tag{position:absolute;top:12px;right:12px;background:var(--primary);color:#fff;padding:6px 12px;border-radius:999px;font-weight:700;box-shadow:0 8px 16px rgba(0,0,0,.2)}
.hover-video{position:absolute;inset:0;opacity:0;transition:opacity .2s ease}
.hover-video video{width:100%;height:100%;object-fit:cover;border-radius:inherit}
.course-card:hover .hover-video{opacity:1}
.preview-info{display:grid;gap:4px}
.preview-title{font-weight:700;font-size:14px;color:var(--primary)}
.muted.small{font-size:13px}
.stack-sm{display:grid;grid-template-columns:repeat(auto-fit,minmax(220px,1fr));gap:16px}
.file-field small{display:block;margin-top:6px}
.course-manage{display:grid;gap:16px}
.course-manage-header{display:flex;align-items:flex-start;justify-content:space-between;gap:16px;flex-wrap:wrap}
.course-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(220px,1fr));gap:16px}
.course-card-mini{display:grid;gap:10px;padding:12px;border:1px solid rgba(0,0,0,.08);border-radius:14px;background:rgba(0,0,0,.02)}
.course-card-mini .course-thumb{height:140px}
.course-card-mini.manage-card{gap:12px;background:var(--card);border-color:rgba(0,0,0,.08);box-shadow:0 0 0 rgba(0,0,0,0);transition:box-shadow .2s ease}
.course-card-mini.manage-card:hover{box-shadow:0 12px 24px rgba(0,0,0,.08)}
.course-card-cover{display:block}
.course-card-mini.manage-card .course-thumb{height:160px;border-radius:12px}
.course-card-actions{display:grid;gap:8px}
.course-card-actions .btn{width:100%}
.course-card-mini.compact{padding:8px}
.course-card-mini.compact .course-thumb{height:120px}
.course-info h4{margin:0;font-size:16px}
.course-info p{margin:0;font-size:13px}
.course-empty{text-align:center;padding:32px 16px;border:1px dashed var(--accent);border-radius:16px;color:var(--muted)}
.profile-note{background:rgba(0,0,0,.04);padding:10px 12px;border-radius:12px;font-size:14px}
.course-form{display:grid;gap:18px}
.page-heading{display:grid;gap:8px;margin-bottom:16px}
.page-heading h1{display:flex;align-items:center;gap:10px;margin:0}
.course-editor{display:grid;gap:20px}
.course-form-main{display:grid;grid-template-columns:minmax(0,1fr) 320px;gap:24px;align-items:start}
@media (max-width:900px){.course-form-main{grid-template-columns:1fr}}
.course-form-fields{display:grid;gap:16px}
.course-cover{display:grid;gap:12px}
.cover-preview{border:1px dashed var(--accent);border-radius:16px;overflow:hidden;min-height:220px;background:rgba(0,0,0,.02);display:grid;place-items:center}
.cover-preview img{width:100%;height:100%;object-fit:cover}
.cover-placeholder{color:var(--muted);font-weight:600;text-align:center;padding:24px}
.section-head{display:flex;align-items:center;justify-content:space-between;gap:12px;flex-wrap:wrap}
.existing-list{display:grid;gap:12px}
.existing-card{border:1px solid rgba(0,0,0,.08);border-radius:14px;padding:14px;display:grid;gap:12px;background:rgba(0,0,0,.02)}
.existing-card-head{display:flex;align-items:center;justify-content:space-between;gap:12px}
.badge{display:inline-flex;align-items:center;justify-content:center;padding:4px 12px;border-radius:999px;font-weight:700;font-size:13px;background:rgba(27,179,74,.12);color:var(--primary)}
.badge.accent{background:rgba(27,179,74,.16)}
.toggle-remove{display:flex;align-items:center;gap:8px;font-weight:600;color:var(--danger)}
.toggle-remove input{accent-color:var(--danger)}
.course-manage-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(280px,1fr));gap:18px}
.course-manage-card{border:1px solid rgba(0,0,0,.08);border-radius:16px;overflow:hidden;background:var(--card);display:grid;gap:0;transition:box-shadow .2s ease}
.course-manage-card:hover{box-shadow:0 12px 24px rgba(0,0,0,.08)}
.course-manage-cover .course-thumb{border-radius:0;height:160px}
.course-manage-body{padding:16px;display:grid;gap:12px}
.course-manage-actions{display:flex;gap:8px;flex-wrap:wrap}
.course-manage-actions .btn{flex:1 1 140px;text-align:center}
.file-pair{align-items:start}
.videos-block{display:grid;gap:12px}
.videos-head{display:flex;justify-content:space-between;align-items:center;gap:12px;flex-wrap:wrap}
.video-items{display:grid;gap:12px}
.video-item{border:1px solid rgba(0,0,0,.08);border-radius:14px;padding:12px;display:grid;gap:12px;background:rgba(0,0,0,.02);position:relative}
.video-item .remove-video{align-self:flex-end;background:transparent;border:none;color:var(--danger);font-weight:600;cursor:pointer}
.video-item .remove-video:hover{color:#ff1744}
.videos-block .small{font-size:13px}
.course-detail{display:grid;gap:16px;margin-bottom:24px}
.course-detail-header{display:grid;gap:16px;grid-template-columns:minmax(200px,260px) 1fr;align-items:start}
.course-detail-cover{position:relative;border-radius:16px;background-size:cover;background-position:center;min-height:180px;overflow:hidden;border:1px solid rgba(0,0,0,.1)}
.course-detail-meta h3{margin:0}
.course-detail-meta p{margin:6px 0 0}
.course-player{display:grid;gap:12px;position:relative}
.course-player video{width:100%;border-radius:16px;max-height:420px;background:#000}
.course-player.locked video{filter:blur(2px);opacity:.4}
.course-player .player-overlay{position:absolute;inset:0;display:flex;align-items:center;justify-content:center;padding:24px;border-radius:16px;background:rgba(255,255,255,.88);backdrop-filter:blur(8px);color:#166534;text-align:center;z-index:3;flex-direction:column;gap:18px}
.course-player .player-overlay[hidden]{display:none}
.course-player .overlay-inner{display:grid;gap:16px;max-width:420px}
.course-player .overlay-message{font-size:1.05rem;font-weight:700;color:#166534;margin:0}
.course-player .overlay-note{margin:0;font-size:.9rem;color:#15803d}
.course-player .overlay-progress{display:grid;gap:10px}
.course-player .overlay-progress-label{font-weight:600;color:#0f5132;font-size:.9rem}
.course-player .overlay-progress-track{width:100%;height:10px;border-radius:999px;overflow:hidden;background:rgba(21,128,61,.18)}
.course-player .overlay-progress-fill{width:100%;height:100%;background:linear-gradient(90deg,#15803d,#34d399);transform:scaleX(0);transform-origin:left center;transition:transform .3s ease}
.course-player .player-watermark{position:absolute;top:14%;left:12%;font-size:1.15rem;font-weight:700;color:rgba(255,255,255,.35);text-shadow:0 2px 8px rgba(15,23,42,.45);pointer-events:none;user-select:none;mix-blend-mode:screen;z-index:4;letter-spacing:.05em;transition:top .6s ease,left .6s ease,transform .6s ease,opacity .6s ease}
.course-player .player-watermark.hidden{opacity:0}
.player-lock{position:absolute;inset:0;border-radius:16px;background:rgba(0,0,0,.78);display:flex;align-items:center;justify-content:center;padding:24px;text-align:center}
.player-lock-content{display:grid;gap:12px;color:#fff;max-width:420px}
.player-lock-content .btn{justify-self:center}
.player-toolbar{display:flex;justify-content:flex-end;align-items:center;gap:16px;flex-wrap:wrap}
.course-player .player-quality-control{position:absolute;right:18px;bottom:24px;display:flex;flex-direction:column;align-items:flex-end;gap:8px;z-index:4}
.course-player .player-quality-control[hidden]{display:none}
.course-player .quality-toggle{display:inline-flex;align-items:center;gap:8px;background:rgba(15,23,42,.78);color:#f8fafc;border:none;border-radius:999px;padding:6px 14px;font-weight:600;font-size:.9rem;cursor:pointer;box-shadow:0 6px 16px rgba(15,23,42,.35);backdrop-filter:blur(6px);transition:background .2s ease,box-shadow .2s ease,transform .2s ease}
.course-player .quality-toggle:hover,.course-player .quality-toggle:focus-visible{background:rgba(37,99,235,.85);box-shadow:0 10px 24px rgba(37,99,235,.35);transform:translateY(-1px);outline:none}
.course-player .quality-toggle:disabled{opacity:.5;cursor:default;transform:none;box-shadow:none}
.course-player .quality-toggle .quality-icon{width:18px;height:18px;fill:currentColor}
.course-player .quality-toggle::after{content:"";border:5px solid transparent;border-top-color:currentColor;transform:translateY(3px)}
.course-player .quality-menu{background:rgba(15,23,42,.9);backdrop-filter:blur(10px);border-radius:12px;padding:6px;box-shadow:0 18px 32px rgba(15,23,42,.45);display:grid;gap:4px;min-width:140px}
.course-player .quality-menu[hidden]{display:none}
.course-player .quality-option{background:transparent;border:none;color:#f8fafc;font-weight:600;padding:8px 12px;text-align:right;cursor:pointer;border-radius:10px;font-size:.9rem}
.course-player .quality-option:hover,.course-player .quality-option:focus-visible{background:rgba(59,130,246,.35);outline:none}
.course-player .quality-option.active{background:rgba(59,130,246,.55)}
.tl-player{background:#000;border-radius:16px;overflow:hidden}
.tl-player-shell{position:relative;border-radius:16px;overflow:hidden;aspect-ratio:16 / 9;background:#000}
.tl-player .tl-video{width:100%;height:100%;object-fit:contain;max-height:none;background:#000;display:block}
.tl-player .tl-watermark{position:absolute;left:0;top:0;z-index:5;pointer-events:none;user-select:none}
.tl-player .tl-watermark-text{display:inline-block;padding:6px 12px;border-radius:999px;background:rgba(0,0,0,.45);color:rgba(255,255,255,.9);font-size:clamp(12px,1.2vw,18px);font-weight:600;letter-spacing:.02em;text-shadow:0 2px 10px rgba(0,0,0,.6);backdrop-filter:blur(2px)}
.tl-player:fullscreen .tl-watermark-text{font-size:clamp(16px,2.2vw,28px);padding:8px 16px}
.tl-replay{position:absolute;inset:0;display:flex;align-items:center;justify-content:center;z-index:6;background:rgba(0,0,0,.35);pointer-events:none}
.tl-replay[hidden]{display:none}
.tl-replay-btn{border:none;background:rgba(15,23,42,.7);color:#fff;display:flex;align-items:center;justify-content:center;cursor:pointer;box-shadow:0 18px 36px rgba(0,0,0,.35);transition:transform .2s ease,background .2s ease;pointer-events:auto}
.tl-replay-btn:hover,.tl-replay-btn:focus-visible{background:rgba(15,23,42,.7);transform:none;outline:none}
.tl-replay-text{padding:10px 16px;border-radius:999px;font-size:14px;font-weight:600;letter-spacing:.01em}
.tl-player .tl-gesture-overlay{position:absolute;inset:0;display:flex;align-items:center;justify-content:center;pointer-events:none;color:#fff;font-weight:700;text-shadow:0 4px 14px rgba(0,0,0,.55);z-index:4}
.tl-player .tl-gesture-indicator{opacity:0;transform:scale(.9);transition:opacity .2s ease,transform .2s ease;font-size:24px;background:rgba(0,0,0,.45);padding:12px 18px;border-radius:999px}
.tl-player .tl-gesture-indicator.show{opacity:1;transform:scale(1)}
.tl-player .tl-press-indicator{position:absolute;right:20px;top:20px;background:rgba(0,0,0,.6);padding:6px 10px;border-radius:10px;font-size:14px;letter-spacing:.04em}
.tl-controls{position:absolute;left:0;right:0;bottom:0;padding:10px 14px 12px;background:linear-gradient(180deg,rgba(0,0,0,0) 0%,rgba(0,0,0,.6) 55%,rgba(0,0,0,.85) 100%);display:grid;gap:8px;opacity:0;transition:opacity .2s ease;z-index:5}
.tl-player.is-active .tl-controls,.tl-player.is-hover .tl-controls{opacity:1}
.tl-controls-row{display:flex;align-items:center;gap:10px}
.tl-control-btn{width:32px;height:32px;border-radius:999px;border:none;background:rgba(255,255,255,.1);color:#fff;display:inline-flex;align-items:center;justify-content:center;cursor:pointer;transition:background .2s ease,transform .2s ease}
.tl-control-btn svg{width:18px;height:18px;fill:currentColor}
.tl-control-btn:hover,.tl-control-btn:focus-visible{background:rgba(255,255,255,.25);transform:translateY(-1px);outline:none}
.tl-time{font-size:13px;color:#fff;letter-spacing:.02em}
.tl-time.sep{opacity:.65}
.tl-controls-spacer{flex:1}
.tl-progress{position:relative;height:3px;border-radius:999px;background:rgba(255,255,255,.18);overflow:hidden;cursor:pointer}
.tl-progress-buffer,.tl-progress-fill{position:absolute;left:0;top:0;height:100%}
.tl-progress-buffer{background:rgba(255,255,255,.35);width:0}
.tl-progress-fill{background:#f43f5e;width:0}
.tl-progress-range{position:absolute;inset:0;width:100%;opacity:0;cursor:pointer}
.tl-volume{display:flex;align-items:center;gap:6px}
.tl-volume-range{
  width:90px;
  max-width:90px;
  flex:0 0 90px;
  box-sizing:border-box;
  padding:0;
  margin:0;
  appearance:none;
  height:4px;
  border-radius:999px;
  background:
    linear-gradient(90deg,var(--primary) 0%,var(--primary) var(--volume-fill,100%),rgba(255,255,255,.25) var(--volume-fill,100%),rgba(255,255,255,.25) 100%);
}
.tl-volume-range::-webkit-slider-runnable-track{
  height:4px;
  border-radius:999px;
  background:transparent;
}
.tl-volume-range::-webkit-slider-thumb{
  appearance:none;
  width:12px;
  height:12px;
  border-radius:50%;
  background:#fff;
  border:2px solid rgba(255,255,255,.6);
  margin-top:-4px;
}
.tl-volume-range::-moz-range-track{
  height:4px;
  border-radius:999px;
  background:rgba(255,255,255,.25);
}
.tl-volume-range::-moz-range-progress{
  height:4px;
  border-radius:999px;
  background:var(--primary);
}
.tl-volume-range::-moz-range-thumb{
  width:12px;
  height:12px;
  border-radius:50%;
  background:#fff;
  border:2px solid rgba(255,255,255,.6);
}
.tl-settings{position:absolute;right:16px;bottom:60px;background:rgba(15,23,42,.92);color:#fff;border-radius:14px;min-width:220px;box-shadow:0 20px 42px rgba(0,0,0,.35);backdrop-filter:blur(8px);z-index:6}
.tl-settings[hidden]{display:none}
.tl-settings-header{display:flex;align-items:center;gap:8px;padding:10px 12px;border-bottom:1px solid rgba(255,255,255,.12)}
.tl-settings-back{width:28px;height:28px;border:none;border-radius:8px;background:rgba(255,255,255,.1);color:#fff;display:flex;align-items:center;justify-content:center;cursor:pointer}
.tl-settings-back svg{width:18px;height:18px;fill:currentColor}
.tl-settings-title{font-size:14px;font-weight:600}
.tl-settings-body{padding:8px}
.tl-settings-panel[hidden]{display:none}
.tl-settings-item,.tl-settings-option{width:100%;display:flex;align-items:center;justify-content:space-between;gap:12px;border:none;background:transparent;color:#fff;padding:8px 10px;border-radius:10px;font-size:14px;cursor:pointer;text-align:left}
.tl-settings-item:hover,.tl-settings-item:focus-visible,.tl-settings-option:hover,.tl-settings-option:focus-visible{background:rgba(255,255,255,.12);outline:none}
.tl-settings-value{opacity:.7}
.tl-settings-option.active{background:rgba(244,63,94,.45)}
.player-toolbar{display:flex;justify-content:flex-end;align-items:center;gap:12px;margin-top:6px}
.player-toolbar .player-actions{display:flex;justify-content:flex-end;width:100%}
.player-toolbar .btn{display:inline-flex;align-items:center;gap:6px;padding:8px 14px;font-size:13px;border-radius:999px;line-height:1;white-space:nowrap}
.player-toolbar .btn .icon{width:16px;height:16px}
.tl-player:fullscreen{width:100vw;height:100vh;max-height:none;border-radius:0}
.tl-player:fullscreen .tl-player-shell{width:100%;height:100%}
.tl-player:fullscreen .tl-video{width:100%;height:100%;max-height:none;object-fit:contain}
.tl-player:fullscreen .player-overlay{border-radius:0}
.tl-player:fullscreen .tl-controls{padding:16px}
@media (max-width:900px){
  .tl-controls{padding:8px 10px 10px}
  .tl-volume-range{width:70px}
  .tl-time{font-size:12px}
}
.course-placeholder{padding:48px 16px;text-align:center;border:1px dashed var(--accent);border-radius:16px;color:var(--muted);font-weight:600}
.chat-box{display:flex;flex-direction:column;gap:8px}
.chat-box .messages{flex:1;overflow:auto;max-height:65vh}
.send.sticky{position:sticky;bottom:0;background:var(--card);padding-top:8px}
.theme-toggle{position:relative;display:inline-flex;align-items:center;cursor:pointer}
.theme-toggle input{position:absolute;opacity:0;width:1px;height:1px;margin:-1px;overflow:hidden}
.theme-toggle .track{position:relative;width:48px;height:24px;border-radius:999px;background:var(--toggle-track);display:flex;align-items:center;justify-content:space-between;padding:0 6px;box-shadow:0 0 0 1px var(--border-subtle);transition:background .2s ease,box-shadow .2s ease}
.theme-toggle .toggle-icon{display:inline-flex;align-items:center;justify-content:center;width:14px;height:14px;color:var(--toggle-icon);z-index:1;transition:opacity .2s ease,color .2s ease}
.theme-toggle .toggle-icon svg{width:100%;height:100%;fill:currentColor}
.theme-toggle .knob{position:absolute;top:2px;left:2px;width:20px;height:20px;border-radius:999px;background:var(--toggle-knob);box-shadow:0 2px 8px rgba(0,0,0,.2);transition:transform .2s ease,background .2s ease}
.theme-toggle.small input:checked + .track .knob{transform:translateX(24px)}
.theme-toggle.small input:checked + .track .toggle-icon.sun{opacity:.35}
.theme-toggle.small input:not(:checked) + .track .toggle-icon.moon{opacity:.35}
.avatar-menu{position:relative} .avatar-button{background:transparent;border:none;cursor:pointer;padding:0}
.avatar-menu .dropdown{position:absolute;right:0;top:48px;background:var(--surface-elevated);border:1px solid var(--border-subtle);border-radius:12px;padding:12px;display:none;min-width:240px;box-shadow:var(--dropdown-shadow)}
.avatar-menu.open .dropdown{display:block}
.dropdown-row{display:flex;align-items:center;justify-content:space-between;padding:6px 0}
.dropdown-link{display:flex;gap:8px;align-items:center;padding:8px 0;color:var(--text);text-decoration:none}
.dropdown-link:hover{color:var(--primary)}
.dropdown-section{display:grid;gap:4px;padding:6px 0 0;border-top:1px solid var(--border-subtle)}
.dropdown-toggle{display:flex;align-items:center;justify-content:space-between;gap:8px;width:100%;padding:8px 0;background:transparent;border:none;color:var(--text);font:inherit;cursor:pointer;text-align:left}
.dropdown-toggle:hover,.dropdown-toggle:focus-visible{color:var(--primary);outline:none}
.dropdown-toggle:focus-visible .chevron{fill:var(--primary)}
.dropdown-toggle-main{display:flex;align-items:center;gap:8px}
.dropdown-toggle .chevron{width:16px;height:16px;fill:var(--muted);transition:transform .2s ease,fill .2s ease}
.dropdown-section.open .dropdown-toggle .chevron{transform:rotate(180deg);fill:var(--primary)}
.dropdown-submenu{display:grid;gap:6px;padding:4px 0 4px 32px}
.dropdown-submenu[hidden]{display:none}
.dropdown-sublink{display:flex;align-items:center;gap:8px;color:var(--text);text-decoration:none;font-size:14px;padding:4px 0}
.dropdown-sublink:hover{color:var(--primary)}
.disabled-card{text-align:center;font-size:18px;font-weight:600;color:var(--primary)}
.profile-card{display:flex;gap:24px;align-items:center;flex-wrap:wrap}
.profile-avatar{flex:0 0 auto}
.profile-main{flex:1;min-width:240px;display:grid;gap:12px}
.profile-meta{display:flex;gap:16px;flex-wrap:wrap;margin:8px 0 0}
.profile-meta div{display:flex;flex-direction:column;gap:4px}
.profile-meta .label{font-size:12px;text-transform:uppercase;color:var(--muted);letter-spacing:.04em}
.profile-meta .value{font-weight:600}
.profile-tabs{display:flex;gap:8px;margin-top:8px;flex-wrap:wrap}
.profile-tabs .tab{padding:8px 16px;border-radius:999px;background:rgba(0,0,0,.05);text-decoration:none;color:var(--text);font-weight:600}
.profile-tabs .tab:hover{background:rgba(0,0,0,.08)}
.telegram-connect{display:grid;gap:8px}
.telegram-status{display:flex;align-items:center;gap:10px;font-weight:600;flex-wrap:wrap}
.telegram-status.confirmed .telegram-handle{color:var(--primary)}
.telegram-handle{font-weight:700}
.telegram-actions{display:flex;flex-direction:column;gap:4px;align-items:flex-start}
.telegram-actions .btn{margin-top:4px}
.telegram-badge{display:inline-flex;align-items:center;gap:6px;padding:4px 10px;border-radius:999px;font-weight:600;font-size:13px;background:rgba(0,0,0,.08);color:var(--muted)}
.telegram-badge.success{background:rgba(27,179,74,.12);color:var(--primary)}
.telegram-badge.pending{background:rgba(251,191,36,.18);color:#ca8a04}
.telegram-badge.muted{background:rgba(0,0,0,.08);color:var(--muted)}
.telegram-modal-backdrop{position:fixed;inset:0;display:flex;align-items:center;justify-content:center;background:rgba(15,23,42,.45);padding:24px;z-index:1200}
.telegram-modal-backdrop[hidden]{display:none}
.telegram-modal-card{position:relative;width:100%;max-width:420px;background:var(--card-bg,#fff);border-radius:24px;padding:32px;box-shadow:0 20px 48px rgba(15,23,42,.2);display:grid;gap:18px}
.telegram-modal-close{position:absolute;top:16px;right:16px;background:rgba(15,23,42,.08);border:none;width:32px;height:32px;border-radius:50%;font-size:20px;font-weight:700;line-height:1;cursor:pointer;color:var(--muted)}
.telegram-modal-close:hover{background:rgba(15,23,42,.12)}
.telegram-alert{padding:12px 14px;border-radius:14px;background:rgba(198,40,40,.12);color:#c62828;font-weight:600;font-size:14px}
.telegram-alert.success{background:rgba(27,179,74,.12);color:var(--primary)}
.telegram-modal-card .btn.resend{margin-top:6px}
html[data-theme="dark"] .telegram-modal-card{background:var(--dark-card,#111827);box-shadow:0 20px 48px rgba(0,0,0,.55)}
html[data-theme="dark"] .telegram-modal-close{background:rgba(255,255,255,.08);color:#e5e7eb}
html[data-theme="dark"] .telegram-modal-close:hover{background:rgba(255,255,255,.12)}
html[data-theme="dark"] .telegram-alert{background:rgba(239,83,80,.2);color:#ff8181}
html[data-theme="dark"] .telegram-alert.success{background:rgba(57,255,20,.18)}
.share-modal{position:fixed;inset:0;display:flex;align-items:center;justify-content:center;background:rgba(15,23,42,.55);padding:24px;z-index:1300}
.share-modal[hidden]{display:none}
.share-modal-card{position:relative;width:100%;max-width:420px;background:var(--card);border-radius:24px;padding:28px;box-shadow:0 22px 48px rgba(15,23,42,.28);display:grid;gap:20px}
.share-close{position:absolute;top:16px;right:16px;background:rgba(15,23,42,.08);border:none;width:36px;height:36px;border-radius:50%;display:flex;align-items:center;justify-content:center;cursor:pointer;color:var(--muted)}
.share-close:hover{background:rgba(15,23,42,.12)}
.share-close .icon{width:18px;height:18px;fill:var(--muted)}
.share-header{display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap}
.share-header h3{margin:0;font-size:20px}
.share-tabs{display:inline-flex;gap:6px;background:rgba(27,179,74,.12);padding:4px;border-radius:999px}
.share-tab{border:none;background:transparent;padding:6px 14px;border-radius:999px;font-weight:600;color:var(--muted);cursor:pointer;transition:background .2s ease,color .2s ease}
.share-tab.active{background:var(--primary);color:#fff}
.share-pane{display:grid;gap:16px}
.share-pane[hidden]{display:none}
.share-qr{display:flex;align-items:center;justify-content:center;padding:16px;border-radius:16px;background:rgba(0,0,0,.04)}
.share-qr img{width:220px;max-width:100%;height:auto;image-rendering:pixelated}
.share-link-field input{width:100%;padding:12px 16px;border-radius:14px;border:1px solid rgba(0,0,0,.14);font-size:16px;background:var(--card);color:var(--text)}
.share-actions{display:flex;gap:12px;flex-wrap:wrap}
.share-actions .btn{flex:1 1 140px;display:flex;align-items:center;justify-content:center;gap:6px}
.share-feedback{margin:0}
.share-feedback.error{color:var(--danger)}
.body.modal-open{overflow:hidden}
html[data-theme="dark"] .share-modal-card{background:var(--dark-card,#111827);box-shadow:0 28px 60px rgba(0,0,0,.55)}
html[data-theme="dark"] .share-close{background:rgba(255,255,255,.08);color:#e5e7eb}
html[data-theme="dark"] .share-close:hover{background:rgba(255,255,255,.12)}
html[data-theme="dark"] .share-qr{background:rgba(255,255,255,.04)}
html[data-theme="dark"] .share-link-field input{background:rgba(17,24,39,.9);border-color:rgba(148,163,184,.4);color:#e5e7eb}
html[data-theme="dark"] .share-tabs{background:rgba(57,255,20,.18)}
.profile-tabs .tab.active{background:var(--primary);color:#fff}
.profile-form{display:grid;gap:16px}
.profile-form .field{display:flex;flex-direction:column;gap:6px;color:var(--text)}
.profile-form .field span{font-size:14px;color:var(--text);font-weight:600}
.profile-form .field input{padding:10px 12px}
.profile-form .field.full-span{grid-column:1/-1}
.field-email-readonly .email-display{display:flex;align-items:center;gap:8px;padding:10px 12px;border-radius:12px;border:1px solid var(--border-subtle);background:var(--surface-elevated)}
.field-email-readonly .email-lock{color:var(--text)}
.field-email-readonly .email-lock svg{width:18px;height:18px;fill:currentColor}
.email-privacy-row{display:flex;align-items:center;justify-content:space-between;gap:16px;padding:12px 16px;border:1px solid var(--border-subtle);border-radius:16px;background:var(--surface-elevated)}
.email-privacy-text span{font-weight:600}
.email-privacy-text .muted{margin:4px 0 0}
.privacy-toggle .track{width:52px}
.privacy-toggle .toggle-icon{color:var(--muted)}
.privacy-toggle input:checked + .track .toggle-icon.eye-open{opacity:.35}
.privacy-toggle input:not(:checked) + .track .toggle-icon.eye-closed{opacity:.35}
.code-delivery{display:grid;gap:12px}
.code-delivery h3{margin:8px 0 0;font-size:18px}
.delivery-options{display:grid;gap:12px}
.delivery-option{position:relative;display:block}
.delivery-option input{position:absolute;opacity:0;pointer-events:none}
.delivery-card{display:flex;align-items:center;gap:12px;padding:12px 16px;border-radius:16px;border:1px solid var(--border-subtle);background:var(--surface-elevated);transition:border-color .2s ease,box-shadow .2s ease}
.delivery-option input:checked + .delivery-card{border-color:var(--primary);box-shadow:0 0 0 3px rgba(27,179,74,.12)}
.delivery-option.disabled .delivery-card{opacity:.6;cursor:not-allowed}
.delivery-icon{display:inline-flex;align-items:center;justify-content:center;width:40px;height:40px;border-radius:12px;background:rgba(27,179,74,.12);color:var(--primary)}
.delivery-icon.telegram{background:rgba(34,158,217,.16);color:#229ed9}
.delivery-icon.mail{background:rgba(255,200,0,.18);color:#ff9800}
.delivery-icon svg{width:24px;height:24px;fill:currentColor}
.delivery-actions{display:grid;gap:10px;margin-top:12px}
.delivery-actions .btn{display:flex;align-items:center;gap:10px;justify-content:center}
.delivery-actions .delivery-icon{width:32px;height:32px}
.delivery-actions .delivery-icon svg{width:18px;height:18px}
.privacy-modal{position:fixed;inset:0;background:rgba(15,23,42,.5);display:flex;align-items:center;justify-content:center;padding:24px;z-index:1000}
.privacy-modal[hidden]{display:none}
.privacy-modal-card{background:var(--surface-elevated);padding:24px;border-radius:20px;max-width:420px;box-shadow:0 20px 40px rgba(15,23,42,.18);display:grid;gap:16px}
.privacy-modal-card p{margin:0;font-size:15px;line-height:1.6}
.consent-modal{position:fixed;inset:0;background:rgba(15,23,42,.6);display:flex;align-items:center;justify-content:center;padding:24px;z-index:1400}
.consent-modal[hidden]{display:none}
.consent-modal-card{width:100%;max-width:640px;max-height:85vh;overflow:auto;background:var(--card);border-radius:24px;padding:28px;box-shadow:0 24px 60px rgba(15,23,42,.32);display:grid;gap:16px}
.consent-modal-card h2{margin:0;font-size:22px}
.consent-modal-card h3{margin:0;font-size:18px}
.consent-text{display:grid;gap:16px}
.consent-block{display:grid;gap:10px;padding:16px;border-radius:18px;border:1px solid var(--border-subtle);background:var(--surface-elevated)}
.consent-row{display:grid;grid-template-columns:1fr auto auto;align-items:center;gap:16px}
.consent-row .consent-link{font-weight:600}
.consent-toggle .track{background:#d1d5db;box-shadow:inset 0 0 0 1px rgba(0,0,0,.08)}
.consent-toggle .knob{background:#fff}
.consent-toggle input:checked + .track{background:#22c55e}
.consent-toggle input:checked + .track .knob{transform:translateX(24px)}
.consent-scroll{max-height:160px;overflow:auto;padding-right:6px}
.consent-scroll p{margin:0;font-size:14px;line-height:1.6}
.consent-check{display:flex;align-items:flex-start;gap:10px;font-size:14px}
.consent-check input{margin-top:3px}
.consent-actions{display:flex;justify-content:flex-end}
html[data-theme="dark"] .consent-modal-card{background:var(--dark-card,#111827);box-shadow:0 28px 70px rgba(0,0,0,.55)}
.consent-link.consent-disabled{pointer-events:none;opacity:.6;filter:grayscale(.1)}
.file-row{display:flex;align-items:center;gap:12px;flex-wrap:wrap}
.form-actions{display:flex;gap:12px;justify-content:flex-end;flex-wrap:wrap}
.course-preview{display:grid;gap:12px}
.profile-overview{display:grid;gap:6px}
.profile-overview p{margin:0}
.profile-public{display:grid;grid-template-columns:repeat(auto-fit,minmax(260px,1fr));gap:16px;align-items:start}
.public-left{display:grid;gap:8px}
.public-right{display:grid;gap:12px}
.course-page{display:grid;gap:24px}
.course-header{display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap}
.course-header-actions{display:flex;align-items:center;gap:12px;flex-wrap:wrap;justify-content:flex-end}
.course-header-actions .btn{display:flex;align-items:center;gap:6px}
.course-author{display:flex;align-items:center;gap:16px}
.course-author-avatar-link{display:inline-flex}
.course-author-avatar{width:72px;height:72px;border-radius:999px;object-fit:cover;border:2px solid rgba(0,0,0,.08)}
.course-author h1 a,.course-author .muted a{text-decoration:none}
.course-author h1 a:hover,.course-author .muted a:hover{text-decoration:none}
.course-header-meta{display:flex;align-items:center;gap:12px;flex-wrap:wrap}
.price-pill{padding:6px 14px;border-radius:999px;background:var(--primary);color:#fff;font-weight:700;box-shadow:0 10px 20px rgba(0,0,0,.14)}
.course-layout{display:grid;grid-template-columns:minmax(0,1fr) 320px;gap:24px;align-items:start}
@media (max-width:1100px){.course-layout{grid-template-columns:1fr}}
.course-side{display:grid;gap:16px}
.side-card{border:1px solid rgba(0,0,0,.08);border-radius:16px;padding:16px;background:var(--card);display:grid;gap:12px}
.side-card.compact{gap:8px}
.side-courses{display:grid;gap:12px}
.side-course{display:flex;gap:12px;text-decoration:none;color:var(--text);padding:10px;border-radius:14px;border:1px solid rgba(0,0,0,.08);transition:border .2s ease,background .2s ease}
.side-course:hover{border-color:var(--primary)}
.side-course.active{border-color:var(--primary);background:rgba(27,179,74,.08)}
.side-thumb{width:72px;height:72px;border-radius:12px;background-size:cover;background-position:center;background-color:rgba(0,0,0,.08);flex-shrink:0}
.side-info{display:grid;gap:4px;align-items:center}
.side-title{font-weight:600}
.side-list{list-style:none;margin:0;padding:0;display:grid;gap:6px;font-size:14px}
.course-hero{display:grid;grid-template-columns:minmax(0,1fr) 320px;gap:24px;align-items:start}
@media (max-width:900px){.course-hero{grid-template-columns:1fr}}
.hero-cover{border-radius:16px;overflow:hidden;border:1px solid rgba(0,0,0,.08);background:rgba(0,0,0,.04);min-height:220px;display:grid;place-items:center}
.hero-cover img{width:100%;height:100%;object-fit:cover}
.lesson-rail{display:grid;gap:12px;margin-top:16px}
.lesson-rail.locked .lesson-card{pointer-events:none;opacity:.5}
.lesson-scroll{display:flex;gap:12px;overflow-x:auto;padding-bottom:6px}
.lesson-card{display:flex;align-items:center;gap:10px;padding:10px 14px;border-radius:12px;border:1px solid rgba(0,0,0,.12);background:var(--card);cursor:pointer;min-width:180px;transition:border .2s ease,background .2s ease;font-weight:600}
.lesson-card:hover{border-color:var(--primary)}
.lesson-card.active{border-color:var(--primary);background:rgba(27,179,74,.12)}
.lesson-index{width:30px;height:30px;border-radius:999px;background:var(--primary);color:#fff;display:grid;place-items:center;font-weight:700}
.accordion-group{display:grid;gap:12px;margin-top:16px}
.accordion-item{border:1px solid rgba(0,0,0,.08);border-radius:12px;background:var(--card);overflow:hidden}
.accordion-toggle{width:100%;background:transparent;border:none;text-align:left;padding:12px 16px;font-weight:700;display:flex;align-items:center;justify-content:space-between;cursor:pointer;color:var(--text)}
.accordion-toggle::after{content:'+';font-weight:700;transition:transform .2s ease}
.accordion-item.open .accordion-toggle::after{transform:rotate(45deg)}
.accordion-content{max-height:0;overflow:hidden;transition:max-height .25s ease;padding:0 16px}
.accordion-item.open .accordion-content{max-height:520px;padding:0 16px 16px}
.accordion-content p{margin:12px 0 0}
.about-list{list-style:none;margin:0;padding:0;display:grid;gap:6px;font-size:14px}
.purchase-modal{position:fixed;inset:0;background:rgba(0,0,0,.7);display:flex;align-items:center;justify-content:center;padding:16px;z-index:20}
.purchase-modal[hidden]{display:none}
.purchase-modal-card{background:var(--card);border-radius:16px;padding:24px;max-width:420px;display:grid;gap:12px;text-align:center}
.purchase-modal-card a{color:var(--primary);font-weight:600;text-decoration:none}
.purchase-modal-actions{display:flex;justify-content:center}
.notifications{display:grid;gap:16px}
.notification-card{border:1px solid rgba(0,0,0,.08);border-radius:14px;padding:16px;display:grid;gap:12px;background:var(--card)}
.notification-card.unread{border-color:var(--primary)}
.notification-head{display:flex;align-items:center;justify-content:space-between;gap:12px}
.notification-actions{display:flex;gap:12px;flex-wrap:wrap}
.notification-actions form{margin:0}
.notification-actions .btn{flex:1 1 160px;text-align:center}
.notification-meta{display:grid;gap:6px;font-size:14px;color:var(--muted)}
.notification-empty{text-align:center;color:var(--muted);padding:32px 16px}
.resend-block{display:grid;gap:6px;margin-top:4px}
.resend-head{display:flex;align-items:center;justify-content:space-between;font-size:14px;font-weight:600;color:var(--muted)}
.resend-timer{font-variant-numeric:tabular-nums}
.resend-message{font-size:13px;color:var(--muted);min-height:18px}
.resend-message.error{color:var(--danger)}
.support-hint{text-align:center;font-size:14px;color:var(--muted)}
.support-hint a{color:var(--primary);text-decoration:none;font-weight:600}
.support-hint a:hover{text-decoration:underline}
html[data-theme="dark"] .nav-link:hover{background:rgba(255,255,255,.08)}

@media (max-width: 820px){
  .topbar{position:fixed;left:0;right:0;top:0}
  .nav .nav-feed,
  .nav .nav-search,
  .nav .nav-chat,
  .nav .nav-profile{display:none}
  .nav .nav-notifications span{display:none}
  .brand .tagline{display:none}
  .avatar-mini{width:32px;height:32px}
  .nav-bottom{
    display:flex;
    position:fixed;
    left:0;
    right:0;
    bottom:0;
    background:var(--card);
    border-top:1px solid rgba(0,0,0,.08);
    padding:8px 14px;
    gap:12px;
    justify-content:space-around;
    z-index:11;
  }
  .nav-bottom .nav-link{padding:10px 12px;border-radius:12px}
  .nav-bottom .nav-link span{display:none}
  .container{margin:76px auto 96px}
}
html[data-theme="dark"] .profile-tabs .tab{background:rgba(255,255,255,.08)}
html[data-theme="dark"] .profile-tabs .tab:hover{background:rgba(255,255,255,.14)}
html[data-theme="dark"] .course-card-mini{background:rgba(255,255,255,.04);border-color:rgba(255,255,255,.12)}
html[data-theme="dark"] .course-card-mini.manage-card{background:rgba(255,255,255,.04);border-color:rgba(255,255,255,.18);box-shadow:none}
html[data-theme="dark"] .course-card-mini.manage-card:hover{box-shadow:0 12px 24px rgba(0,0,0,.6)}
html[data-theme="dark"] .course-thumb{border-color:rgba(255,255,255,.1)}
html[data-theme="dark"] .profile-note{background:rgba(255,255,255,.06)}
html[data-theme="dark"] .video-item{background:rgba(255,255,255,.04);border-color:rgba(255,255,255,.12)}
html[data-theme="dark"] .existing-card{background:rgba(255,255,255,.04);border-color:rgba(255,255,255,.12)}
html[data-theme="dark"] .side-card{border-color:rgba(255,255,255,.12);background:rgba(255,255,255,.04)}
html[data-theme="dark"] .side-course{border-color:rgba(255,255,255,.12);background:rgba(255,255,255,.02)}
html[data-theme="dark"] .side-course.active{background:rgba(57,255,20,.12)}
html[data-theme="dark"] .accordion-item{border-color:rgba(255,255,255,.12);background:rgba(255,255,255,.04)}
html[data-theme="dark"] .lesson-card{background:rgba(255,255,255,.02);border-color:rgba(255,255,255,.12)}
html[data-theme="dark"] .lesson-card.active{background:rgba(57,255,20,.12);border-color:var(--primary)}
html[data-theme="dark"] .flash.ok{background:rgba(57,255,20,.12);border-color:rgba(57,255,20,.35)}
html[data-theme="dark"] .flash.error{background:rgba(255,82,82,.12);border-color:rgba(255,138,128,.35)}

.admin-card h2{margin-bottom:12px}
.admin-form .grid-2{margin-bottom:12px}
.admin-table-wrap{overflow-x:auto}
.admin-table{width:100%;border-collapse:collapse}
.admin-table th,.admin-table td{padding:10px 8px;border-bottom:1px solid var(--border, #e5e5e5);text-align:left;vertical-align:middle}
.admin-table th{font-size:13px;text-transform:uppercase;letter-spacing:.04em;color:var(--muted, #7a7a7a)}
.admin-actions{white-space:nowrap}
.admin-status{white-space:nowrap}
.admin-inline-form{display:inline-flex;align-items:center;gap:6px;margin:0 6px 0 0}
.admin-inline-form input{min-width:160px}
.admin-stats{display:flex;gap:20px;flex-wrap:wrap}
.admin-stats .stat{padding:12px 16px;border-radius:14px;border:1px solid var(--border-subtle);background:var(--surface-elevated);min-width:160px}
.admin-stats .stat-label{font-size:12px;color:var(--text-muted)}
.admin-stats .stat-value{font-size:24px;font-weight:700;margin-top:6px}
.password-hints{display:grid;gap:3px;margin:-2px 0 6px}
.password-hints.is-hidden{display:none}
.password-hints .hint{font-size:12px;line-height:1.1;color:var(--text-muted)}
.password-hints .hint.ok{color:#16a34a;font-weight:600}
.password-hints .hint.bad{color:#ef4444}
.field.checkbox.inline{display:inline-flex;align-items:center;gap:6px}
.legal-footer{margin:24px auto 32px;display:flex;justify-content:center;gap:8px;font-size:12px;color:var(--text-muted)}
.legal-footer .legal-link{color:inherit;text-decoration:none}
.legal-footer .legal-link:hover{text-decoration:underline}
.legal-footer .legal-sep{opacity:.6}
.subject-toggle .track{background:#d1d5db;box-shadow:inset 0 0 0 1px rgba(0,0,0,.08)}
.subject-toggle .knob{background:#fff}
.subject-toggle input:checked + .track{background:#22c55e}
.subject-toggle input:checked + .track .knob{transform:translateX(24px)}

.profile-bio{
  white-space:pre-wrap;
  overflow-wrap:anywhere;
  word-break:break-word;
}

.long-text{
  white-space:pre-wrap;
  overflow-wrap:anywhere;
  word-break:break-word;
}

.wm-guard{position:fixed;inset:0;background:rgba(8,10,14,.72);display:flex;align-items:center;justify-content:center;z-index:2000;padding:24px}
.wm-guard[hidden]{display:none}
.wm-guard-card{max-width:520px;width:100%;background:#12151c;color:#fff;border-radius:18px;padding:24px 24px 20px;box-shadow:0 20px 60px rgba(0,0,0,.45)}
.wm-guard-header{display:flex;gap:14px;align-items:center;margin-bottom:12px}
.wm-guard-emoji{font-size:28px;line-height:1}
.wm-guard-title{font-size:18px;font-weight:700}
.wm-guard-text{color:#cbd2de;margin:0 0 16px;line-height:1.5}
.wm-guard-details{background:#0b0f14;border-radius:12px;padding:12px 14px;margin:0 0 16px}
.wm-guard-details summary{cursor:pointer;font-weight:600;color:#e7ecf5;list-style:revert}
.wm-guard-list{margin:10px 0 0 18px;color:#b8c0cf}
.wm-guard-actions{display:flex;gap:12px;justify-content:flex-end;flex-wrap:wrap}