/* VOTH-IT Learning – Stylesheet */
@font-face{font-family:Manrope;font-weight:400;font-display:swap;src:url(../fonts/manrope-regular.woff2) format("woff2")}
@font-face{font-family:Manrope;font-weight:500;font-display:swap;src:url(../fonts/manrope-500.woff2) format("woff2")}
@font-face{font-family:Manrope;font-weight:600;font-display:swap;src:url(../fonts/manrope-600.woff2) format("woff2")}
@font-face{font-family:Manrope;font-weight:700;font-display:swap;src:url(../fonts/manrope-700.woff2) format("woff2")}
@font-face{font-family:Manrope;font-weight:800;font-display:swap;src:url(../fonts/manrope-800.woff2) format("woff2")}

:root{
  --navy:#1B333E;--petrol:#006980;--teal:#01AEAB;
  --bg:#F4F7F8;--card:#fff;--text:#1B333E;--muted:#5E7480;--line:#DCE5E8;
  --ok:#1E9E6A;--warn:#E8A23A;--danger:#D64545;
  --r:14px;--shadow:0 1px 2px rgba(27,51,62,.06),0 6px 20px rgba(27,51,62,.06);
  --grad:linear-gradient(135deg,var(--navy),var(--petrol));
}
*{box-sizing:border-box}
html{-webkit-text-size-adjust:100%}
body{margin:0;font-family:Manrope,system-ui,-apple-system,Segoe UI,Roboto,sans-serif;font-size:16px;line-height:1.55;color:var(--text);background:var(--bg);min-height:100vh;display:flex;flex-direction:column}
img{max-width:100%;display:block}
a{color:var(--petrol);text-underline-offset:2px}
a:hover{color:var(--teal)}
h1,h2,h3,h4{line-height:1.2;margin:0 0 .5em;letter-spacing:-.01em}
h1{font-size:clamp(1.6rem,3.2vw,2.2rem);font-weight:800}
h2,.h2{font-size:1.6rem;font-weight:800}
.h3,h3{font-size:1.2rem;font-weight:700}
.h4,h4{font-size:1rem;font-weight:700}
p{margin:0 0 1em}
code{background:#E9F0F2;padding:.1em .4em;border-radius:6px;font-size:.9em}
.muted{color:var(--muted)}.small,small{font-size:.85rem}
.center{text-align:center}
[hidden]{display:none!important}
.icon{width:1.15em;height:1.15em;flex:none;vertical-align:-.2em}
.container{width:100%;max-width:1200px;margin:0 auto;padding:0 20px}
.narrow{max-width:760px}.narrow-page{max-width:860px}
.main{flex:1}
.section{padding-top:28px;padding-bottom:56px}
.section-head{display:flex;justify-content:space-between;align-items:center;gap:16px;flex-wrap:wrap;margin-bottom:20px}
.section-head h1,.section-head h2{margin:0}
.section-head.tight{margin-bottom:12px}
.eyebrow{font-size:.78rem;text-transform:uppercase;letter-spacing:.12em;font-weight:700;color:var(--teal);margin-bottom:8px}
.eyebrow.dark{color:var(--petrol)}

/* Topbar */
.topbar{background:var(--navy);color:#fff;position:sticky;top:0;z-index:50}
.topbar-inner{display:flex;align-items:center;justify-content:space-between;max-width:1200px;margin:0 auto;padding:12px 20px;gap:16px}
.brand{display:flex;align-items:center;gap:12px;text-decoration:none;color:#fff}
.brand img{height:30px;width:auto}
.brand-sub{font-weight:700;font-size:.8rem;letter-spacing:.14em;text-transform:uppercase;color:var(--teal);border-left:1px solid rgba(255,255,255,.25);padding-left:12px}
.nav{display:flex;align-items:center;gap:4px}
.nav-link{display:inline-flex;align-items:center;gap:8px;color:#D5E3E8;text-decoration:none;padding:9px 14px;border-radius:10px;font:inherit;font-weight:600;font-size:.95rem;background:none;border:0;cursor:pointer}
.nav-link:hover,.nav-link.is-active{background:rgba(255,255,255,.1);color:#fff}
.nav-logout{margin:0}
.nav-toggle{display:none;background:none;border:0;color:#fff;padding:8px;cursor:pointer}
.nav-toggle .icon{width:26px;height:26px}
.admin-bar{background:#fff;border-bottom:1px solid var(--line)}
.admin-bar-inner{display:flex;gap:4px;overflow-x:auto}
.tab{display:inline-flex;align-items:center;gap:8px;padding:14px 16px;text-decoration:none;color:var(--muted);font-weight:700;font-size:.95rem;border-bottom:3px solid transparent;white-space:nowrap}
.tab:hover{color:var(--petrol)}.tab.is-active{color:var(--petrol);border-bottom-color:var(--teal)}
.footer{background:var(--navy);color:#9FB6BF;font-size:.85rem;padding:20px 0;margin-top:auto}
.footer-inner{display:flex;justify-content:space-between;flex-wrap:wrap;gap:10px}
.footer a{color:#C9DAE0;margin-left:16px}

/* Buttons */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;font:inherit;font-weight:700;font-size:.95rem;padding:11px 20px;border-radius:12px;border:1px solid transparent;cursor:pointer;text-decoration:none;line-height:1.2;transition:background .15s,transform .05s,box-shadow .15s}
.btn:active{transform:translateY(1px)}
.btn-primary{background:var(--petrol);color:#fff}.btn-primary:hover{background:#00566a;color:#fff}
.btn-teal{background:var(--teal);color:#fff}.btn-teal:hover{background:#019593;color:#fff}
.btn-soft{background:#E4EEF1;color:var(--navy)}.btn-soft:hover{background:#D3E3E8;color:var(--navy)}
.btn-ghost-light{background:rgba(255,255,255,.12);color:#fff;border-color:rgba(255,255,255,.3)}.btn-ghost-light:hover{background:rgba(255,255,255,.22);color:#fff}
.btn-ok{background:#DDF3E9;color:#12724C}.btn-ok:hover{background:#CBEBDD}
.btn-danger{background:var(--danger);color:#fff}.btn-danger:hover{background:#b93636;color:#fff}
.btn-sm{padding:7px 13px;font-size:.85rem;border-radius:10px}
.btn-block{width:100%}
.btn:focus-visible,.icon-btn:focus-visible,.pc-btn:focus-visible,a:focus-visible,input:focus-visible,select:focus-visible,textarea:focus-visible{outline:3px solid rgba(1,174,171,.45);outline-offset:2px}
.btn-row{display:flex;gap:8px;align-items:center;flex-wrap:wrap}
.btn-row form{margin:0}
.icon-btn{display:inline-grid;place-items:center;width:34px;height:34px;border-radius:9px;border:0;background:transparent;color:var(--muted);cursor:pointer;text-decoration:none}
.icon-btn:hover{background:#E4EEF1;color:var(--navy)}.icon-btn.danger:hover{background:#FBE5E5;color:var(--danger)}
.icon-btn[disabled]{opacity:.3;cursor:default;pointer-events:none}
.link-btn{background:none;border:0;padding:0;color:var(--petrol);font:inherit;font-weight:700;cursor:pointer;text-decoration:underline}
.back-link{display:inline-flex;align-items:center;gap:6px;color:#C9DAE0;text-decoration:none;font-weight:600;font-size:.9rem;margin-bottom:14px}
.back-link:hover{color:#fff}.back-link.dark{color:var(--muted)}.back-link.dark:hover{color:var(--petrol)}

/* Cards & layout */
.card{background:var(--card);border-radius:var(--r);box-shadow:var(--shadow);border:1px solid var(--line)}
.pad{padding:24px}
.card+.card,.card+.pad,.editor-main>*+*{margin-top:20px}
.grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(290px,1fr));gap:22px}
.two-col{display:grid;grid-template-columns:1fr 1fr;gap:20px;align-items:start}
.two-col.wide-left{grid-template-columns:minmax(0,1.7fr) minmax(300px,1fr)}
.two-col .card+.card{margin-top:0}
.editor-layout{display:grid;grid-template-columns:minmax(0,1fr) 320px;gap:24px;align-items:start}
.editor-side>*+*{margin-top:20px}
.plain-list{list-style:none;margin:0;padding:0}.plain-list li+li{margin-top:14px}.plain-list.tight li+li{margin-top:8px}
.badge{display:inline-block;font-size:.72rem;font-weight:700;padding:3px 10px;border-radius:999px;background:#E4EEF1;color:var(--navy);vertical-align:middle}
.badge-ok{background:#DDF3E9;color:#12724C}.badge-warn{background:#FCEFD5;color:#8A5A0B}.badge-bad{background:#FBE5E5;color:#A32727}.badge-muted{background:#EEF1F2;color:var(--muted)}
.count{display:inline-block;background:var(--teal);color:#fff;font-size:.72rem;padding:1px 8px;border-radius:999px;margin-left:4px;font-weight:700;vertical-align:middle}
.empty{text-align:center;background:#fff;border:2px dashed var(--line);border-radius:var(--r);padding:56px 24px}
.empty>.icon{width:44px;height:44px;color:var(--teal);margin:0 auto 12px}
.empty h2{font-size:1.3rem}
.alert{display:flex;align-items:flex-start;gap:12px;padding:14px 16px;border-radius:12px;margin:20px 0 0;font-weight:600;font-size:.95rem}
.alert>span{flex:1}
.alert-success{background:#DDF3E9;color:#12724C}.alert-error{background:#FBE5E5;color:#A32727}.alert-info{background:#DEF0F5;color:#075468}
.alert-close{background:none;border:0;color:inherit;cursor:pointer;opacity:.6;padding:0}.alert-close:hover{opacity:1}
.hint{display:flex;gap:10px;background:#FFF6E4;color:#6F4A08;padding:12px 14px;border-radius:10px;font-size:.9rem}
.warn-text{color:#A66A0A;font-weight:600}
.danger-zone{border-color:#F0CACA}
.result-box{border-color:var(--teal);background:#F2FBFB;margin-bottom:20px}
.result-box .icon{color:var(--ok)}

/* Hero */
.hero{background:var(--grad);color:#fff;padding:44px 0 48px}
.hero-inner{display:flex;justify-content:space-between;align-items:center;gap:28px;flex-wrap:wrap}
.hero h1{margin:0 0 8px}.hero-sub{color:#C9DAE0;max-width:560px;margin:0;font-size:1.05rem}
.resume-card{display:flex;align-items:center;gap:16px;background:rgba(255,255,255,.1);border:1px solid rgba(255,255,255,.22);color:#fff;text-decoration:none;padding:16px 20px;border-radius:16px;max-width:460px;transition:background .15s}
.resume-card:hover{background:rgba(255,255,255,.18);color:#fff}
.resume-play{width:46px;height:46px;border-radius:50%;background:var(--teal);display:grid;place-items:center;flex:none}
.resume-text{display:flex;flex-direction:column;min-width:0}
.resume-text small{color:#9FD9DA;font-weight:700;text-transform:uppercase;letter-spacing:.08em;font-size:.7rem}
.resume-text strong{white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.resume-text em{font-style:normal;color:#C9DAE0;font-size:.85rem}
.hero-course .course-head{display:grid;grid-template-columns:minmax(0,1fr) 340px;gap:36px;align-items:center}
.hero-actions{display:flex;gap:10px;flex-wrap:wrap;margin-top:20px}
.meta{display:flex;flex-wrap:wrap;gap:6px 18px;font-size:.88rem;color:var(--muted);margin:10px 0}
.meta span{display:inline-flex;gap:6px;align-items:center}.meta-light{color:#C9DAE0}

/* Cards: courses */
.course-card{overflow:hidden;display:flex;flex-direction:column;transition:transform .15s,box-shadow .15s}
.course-card:hover{transform:translateY(-3px);box-shadow:0 10px 30px rgba(27,51,62,.14)}
.course-card .card-media{display:block}
.card-body{padding:20px;display:flex;flex-direction:column;gap:6px;flex:1}
.card-body h3{margin:0;font-size:1.15rem}.card-body h3 a{color:var(--navy);text-decoration:none}
.card-body p{margin:0}.clamp{display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.card-actions{margin-top:auto;padding-top:14px}
.cover{aspect-ratio:16/9;position:relative;overflow:hidden;display:flex;align-items:flex-end;padding:16px;color:#fff;background:var(--grad)}
.cover img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover}
.cover-v0{background:linear-gradient(135deg,#1B333E,#006980)}.cover-v1{background:linear-gradient(135deg,#006980,#01AEAB)}
.cover-v2{background:linear-gradient(135deg,#12262F,#1B333E 40%,#01AEAB)}.cover-v3{background:linear-gradient(135deg,#01AEAB,#1B333E)}
.cover-mark{position:absolute;right:16px;top:16px;width:42px;height:42px;border-radius:50%;background:rgba(255,255,255,.18);display:grid;place-items:center}
.cover-title{position:relative;font-weight:800;font-size:1.05rem;line-height:1.25;text-shadow:0 1px 8px rgba(0,0,0,.25);max-width:85%}
.course-head-cover .cover{border-radius:var(--r);box-shadow:0 12px 40px rgba(0,0,0,.3)}
.progress{height:8px;background:#DCE8EB;border-radius:99px;overflow:hidden;flex:1}
.progress>span{display:block;height:100%;background:linear-gradient(90deg,var(--petrol),var(--teal));border-radius:99px;transition:width .4s}
.progress-sm{height:6px;max-width:140px}
.progress-row{display:flex;align-items:center;gap:10px}.progress-label{font-size:.82rem;font-weight:700;min-width:38px;text-align:right}
.progress-light .progress{background:rgba(255,255,255,.2)}.progress-light .progress>span{background:var(--teal)}
.progress-line{display:flex;flex-direction:column;gap:4px}.line-top{display:flex;justify-content:space-between;align-items:center;gap:10px}

/* Course page */
.course-layout{max-width:860px}
.course-main>*+*{margin-top:20px}
.module-head{display:flex;justify-content:space-between;align-items:center;gap:16px;padding:18px 24px;border-bottom:1px solid var(--line)}
.module-head h2{margin:0}
.lesson-list{list-style:none;margin:0;padding:6px}
.lesson-row{display:flex;align-items:center;gap:14px;padding:12px 16px;border-radius:12px;text-decoration:none;color:var(--text)}
.lesson-row:hover{background:#F0F6F8}
.lesson-state{width:34px;height:34px;border-radius:50%;border:2px solid var(--line);display:grid;place-items:center;font-weight:700;font-size:.85rem;color:var(--muted);flex:none}
.lesson-row.is-done .lesson-state{background:var(--ok);border-color:var(--ok);color:#fff}
.lesson-info{flex:1;display:flex;flex-direction:column;min-width:0}.lesson-dur{color:var(--muted);font-size:.85rem;font-variant-numeric:tabular-nums}
.prose{overflow-wrap:anywhere}.prose p:last-child{margin-bottom:0}

/* Lesson page */
.lesson-layout{display:grid;grid-template-columns:minmax(0,1fr) 360px;gap:28px;padding-top:20px;padding-bottom:56px;align-items:start}
.lesson-main>*+*{margin-top:18px}.lesson-main>.back-link{margin-bottom:0}
.lesson-head{display:flex;justify-content:space-between;gap:16px;flex-wrap:wrap;align-items:flex-start}
.lesson-head h1{font-size:1.6rem;margin:0}
.lesson-actions{display:flex;gap:8px;flex-wrap:wrap}
.lesson-nav{display:flex;justify-content:space-between;align-items:center;gap:12px;flex-wrap:wrap}
.switch{display:inline-flex;align-items:center;gap:10px;cursor:pointer;color:var(--muted)}
.switch input{position:absolute;opacity:0}
.switch-ui{width:40px;height:22px;background:#C6D3D8;border-radius:99px;position:relative;transition:background .2s}
.switch-ui::after{content:"";position:absolute;top:3px;left:3px;width:16px;height:16px;border-radius:50%;background:#fff;transition:transform .2s}
.switch input:checked+.switch-ui{background:var(--teal)}.switch input:checked+.switch-ui::after{transform:translateX(18px)}
.switch input:focus-visible+.switch-ui{outline:3px solid rgba(1,174,171,.45)}
.tabs{background:#fff;border:1px solid var(--line);border-radius:var(--r);box-shadow:var(--shadow)}
.tab-list{display:flex;border-bottom:1px solid var(--line);overflow-x:auto}
.tab-btn{background:none;border:0;border-bottom:3px solid transparent;padding:14px 20px;font:inherit;font-weight:700;color:var(--muted);cursor:pointer;white-space:nowrap}
.tab-btn.is-active{color:var(--petrol);border-bottom-color:var(--teal)}
.tab-panel{padding:22px}
.file-list{list-style:none;margin:0 0 16px;padding:0;display:grid;gap:10px}
.file-row{display:flex;align-items:center;gap:14px;padding:12px 14px;border:1px solid var(--line);border-radius:12px;text-decoration:none;color:var(--text)}
a.file-row:hover{border-color:var(--teal);background:#F2FBFB}
.file-row.static form{margin:0}
.file-ic{width:40px;height:40px;border-radius:10px;background:#E4EEF1;display:grid;place-items:center;color:var(--petrol);flex:none}
.file-info{flex:1;display:flex;flex-direction:column;min-width:0}.file-info strong{overflow:hidden;text-overflow:ellipsis}.file-dl{color:var(--petrol)}
.note-form textarea{width:100%}
.note-form-foot{display:flex;justify-content:space-between;align-items:center;gap:12px;margin-top:10px;flex-wrap:wrap}
.note-list{list-style:none;margin:18px 0 0;padding:0;display:grid;gap:12px}
.note-list li{display:flex;gap:12px;align-items:flex-start;padding:12px 14px;background:#F6FAFB;border-radius:12px}
.note-time{background:#DEF0F5;color:var(--petrol);border:0;border-radius:8px;padding:4px 10px;font:inherit;font-weight:700;font-size:.82rem;cursor:pointer;display:inline-flex;gap:6px;align-items:center;white-space:nowrap}
.note-time .icon{width:11px;height:11px}
.note-body{flex:1;overflow-wrap:anywhere}
.lesson-side{position:sticky;top:78px}
.side-card{overflow:hidden}
.side-head{padding:18px 20px;border-bottom:1px solid var(--line);display:flex;flex-direction:column;gap:8px}
.side-head h2{margin:0}
.side-scroll{max-height:calc(100vh - 290px);overflow:auto}
.side-module{padding:14px 20px 6px;font-size:.74rem;font-weight:800;letter-spacing:.1em;text-transform:uppercase;color:var(--muted)}
.side-list{list-style:none;margin:0;padding:0 8px 8px}
.side-item{display:flex;align-items:center;gap:12px;padding:10px 12px;border-radius:10px;text-decoration:none;color:var(--text);font-size:.92rem}
.side-item:hover{background:#F0F6F8}.side-item.is-current{background:#E3F4F4;font-weight:700}
.side-state{width:26px;height:26px;border-radius:50%;border:2px solid var(--line);display:grid;place-items:center;font-size:.72rem;font-weight:700;color:var(--muted);flex:none;position:relative}
.side-state .icon{display:none;width:13px;height:13px}
.side-item.is-done .side-state{background:var(--ok);border-color:var(--ok);color:#fff}
.side-item.is-done .side-state .icon{display:block}.side-item.is-done .side-num{display:none}
.side-item.is-current:not(.is-done) .side-state{border-color:var(--teal);color:var(--teal)}
.side-title{flex:1;min-width:0}.side-dur{color:var(--muted);font-size:.8rem;font-variant-numeric:tabular-nums}

/* Player */
.player{position:relative;background:#000;border-radius:var(--r);overflow:hidden;aspect-ratio:16/9;box-shadow:0 12px 40px rgba(27,51,62,.25);color:#fff;user-select:none;outline:none}
.player video{width:100%;height:100%;display:block;background:#000}
.player:fullscreen{border-radius:0;aspect-ratio:auto}
.player-empty{display:flex;flex-direction:column;align-items:center;justify-content:center;gap:10px;background:var(--grad);text-align:center;padding:24px}
.player-empty>.icon{width:44px;height:44px;opacity:.7}.player-empty p{margin:0}
.player-bigplay{position:absolute;inset:0;margin:auto;width:84px;height:84px;border-radius:50%;border:0;background:rgba(1,174,171,.92);color:#fff;display:grid;place-items:center;cursor:pointer;box-shadow:0 8px 30px rgba(0,0,0,.4);transition:transform .15s}
.player-bigplay .icon{width:34px;height:34px;margin-left:4px}.player-bigplay:hover{transform:scale(1.07)}
.player.is-playing .player-bigplay,.player.is-ended .player-bigplay,.player.is-error .player-bigplay{display:none}
.player-spinner{position:absolute;inset:0;margin:auto;width:48px;height:48px;border:4px solid rgba(255,255,255,.25);border-top-color:var(--teal);border-radius:50%;animation:spin .8s linear infinite;pointer-events:none}
@keyframes spin{to{transform:rotate(360deg)}}
.player-controls{position:absolute;left:0;right:0;bottom:0;padding:34px 14px 10px;background:linear-gradient(transparent,rgba(0,0,0,.78));transition:opacity .25s}
.player.is-playing.is-idle .player-controls{opacity:0}.player.is-playing.is-idle{cursor:none}
.player-seek{height:18px;display:flex;align-items:center;position:relative;cursor:pointer;touch-action:none}
.player-seek::before{content:"";position:absolute;left:0;right:0;height:5px;background:rgba(255,255,255,.28);border-radius:9px;transition:height .12s}
.player-seek:hover::before,.player-seek.is-drag::before{height:7px}
.seek-buffer,.seek-played{position:absolute;left:0;height:5px;border-radius:9px;pointer-events:none;transition:height .12s}
.player-seek:hover .seek-buffer,.player-seek:hover .seek-played,.player-seek.is-drag .seek-buffer,.player-seek.is-drag .seek-played{height:7px}
.seek-buffer{background:rgba(255,255,255,.35);width:0}.seek-played{background:var(--teal);width:0}
.seek-thumb{position:absolute;left:0;width:14px;height:14px;margin-left:-7px;border-radius:50%;background:#fff;transform:scale(0);transition:transform .12s;pointer-events:none}
.player-seek:hover .seek-thumb,.player-seek.is-drag .seek-thumb{transform:scale(1)}
.seek-tip{position:absolute;bottom:22px;transform:translateX(-50%);background:rgba(0,0,0,.85);padding:3px 8px;border-radius:6px;font-size:.78rem;font-variant-numeric:tabular-nums;opacity:0;pointer-events:none}
.player-seek:hover .seek-tip{opacity:1}
.player-bar{display:flex;align-items:center;gap:2px}
.pc-btn{background:none;border:0;color:#fff;width:40px;height:40px;border-radius:8px;display:inline-grid;place-items:center;cursor:pointer;font:inherit}
.pc-btn:hover{background:rgba(255,255,255,.16)}.pc-btn .icon{width:22px;height:22px}
.pc-text{width:auto;padding:0 10px;font-weight:700;font-size:.9rem}
.pc-time{font-size:.85rem;font-variant-numeric:tabular-nums;margin:0 8px;white-space:nowrap}
.pc-spacer{flex:1}
.ic-pause{display:none}.player.is-playing .ic-play{display:none}.player.is-playing .ic-pause{display:inline-flex}
.pc-vol{display:flex;align-items:center}
.vol-range{width:0;opacity:0;transition:width .2s,opacity .2s;accent-color:var(--teal);height:4px;margin:0}
.pc-vol:hover .vol-range,.pc-vol:focus-within .vol-range{width:84px;opacity:1;margin:0 8px 0 4px}
.pc-menu{position:relative}
.pc-pop{position:absolute;bottom:46px;right:0;list-style:none;margin:0;padding:6px;background:rgba(20,32,38,.96);border-radius:10px;min-width:90px}
.pc-pop button{display:block;width:100%;text-align:left;background:none;border:0;color:#fff;padding:8px 12px;border-radius:7px;font:inherit;font-size:.9rem;cursor:pointer}
.pc-pop button:hover{background:rgba(255,255,255,.14)}.pc-pop button.is-active{color:var(--teal);font-weight:800}
.player-toast{position:absolute;top:16px;left:50%;transform:translateX(-50%);background:rgba(0,0,0,.75);padding:7px 16px;border-radius:99px;font-weight:700;font-size:.9rem;opacity:0;transition:opacity .2s;pointer-events:none;z-index:3}
.player-toast.show{opacity:1}
.player-end,.player-error{position:absolute;inset:0;background:rgba(10,20,25,.88);display:flex;align-items:center;justify-content:center;text-align:center;padding:20px;z-index:2}
.player-end-title{font-size:1.4rem;font-weight:800}.player-end-title .icon{color:var(--teal)}
.player-end-next{color:#C9DAE0}.player-end-actions{display:flex;gap:10px;justify-content:center;flex-wrap:wrap}
.player-error{flex-direction:column;gap:6px}.player-error .icon{width:40px;height:40px;color:var(--warn)}.player-error p{max-width:420px}
.admin-preview{width:100%;max-height:340px;border-radius:12px;background:#000;margin-top:14px}

/* Forms */
.form{display:grid;gap:16px}
.field{display:flex;flex-direction:column;gap:6px;border:0;padding:0;margin:0;min-width:0}
.field>span,.legend{font-weight:700;font-size:.88rem}
.field small{color:var(--muted)}
input[type=text],input[type=email],input[type=password],input[type=url],input[type=number],select,textarea{font:inherit;color:inherit;width:100%;padding:11px 14px;border:1px solid #C6D3D8;border-radius:10px;background:#fff;transition:border-color .15s,box-shadow .15s}
input:focus,select:focus,textarea:focus{border-color:var(--teal);box-shadow:0 0 0 3px rgba(1,174,171,.18);outline:none}
textarea{resize:vertical;min-height:80px}
input[type=file]{font:inherit;font-size:.9rem}
.field-row{display:grid;grid-template-columns:repeat(auto-fit,minmax(200px,1fr));gap:16px}
.check{display:flex;gap:10px;align-items:flex-start;cursor:pointer;font-size:.95rem}
.check input{width:18px;height:18px;margin-top:2px;accent-color:var(--petrol);flex:none}
.inline-form{display:flex;gap:8px;align-items:center;flex-wrap:wrap}.inline-form.grow{flex:1}.inline-form input{flex:1;min-width:140px;width:auto}
.copy-row{display:flex;gap:8px}.copy-row input{flex:1;font-size:.85rem;font-family:ui-monospace,monospace}
.link-list{list-style:none;margin:0;padding:0;display:grid;gap:14px}
.material-form{margin-top:20px;padding-top:20px;border-top:1px solid var(--line)}
.video-box{background:#F6FAFB;border:1px solid var(--line);border-radius:12px;padding:18px;display:grid;gap:14px}
.video-box-head{display:flex;justify-content:space-between;align-items:center}.video-box-head h3{margin:0}
.dropzone{border:2px dashed #A9C3CB;border-radius:12px;text-align:center;padding:22px;background:#fff;transition:border-color .15s,background .15s}
.dropzone.is-over{border-color:var(--teal);background:#F2FBFB}
.dropzone>.icon{width:30px;height:30px;color:var(--teal)}.dropzone p{margin:6px 0}
.upload-progress{margin-top:12px;text-align:left}.upload-progress .progress{margin-bottom:6px}

/* Auth */
.auth-body{background:#fff}
.auth-wrap{display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1fr);min-height:100vh}
.auth-hero{background:var(--grad);color:#fff;padding:48px;display:flex;flex-direction:column;justify-content:space-between;position:relative;overflow:hidden}
.auth-hero::after{content:"";position:absolute;right:-120px;bottom:-120px;width:420px;height:420px;border-radius:50%;background:radial-gradient(circle,rgba(1,174,171,.45),transparent 70%)}
.auth-hero-inner{position:relative;z-index:1;max-width:480px}
.auth-logo{height:42px;width:auto;margin-bottom:56px}
.auth-hero h1{font-size:2.3rem;margin-bottom:16px}.auth-hero p{color:#C9DAE0;font-size:1.05rem}
.auth-points{list-style:none;padding:0;margin:28px 0 0;display:grid;gap:12px;font-weight:600}
.auth-points li{display:flex;gap:12px;align-items:center}.auth-points .icon{color:var(--teal);width:22px;height:22px}
.auth-hero-foot{position:relative;z-index:1;color:#9FB6BF;font-size:.85rem}
.auth-panel{display:flex;flex-direction:column;justify-content:center;align-items:center;padding:32px;background:var(--bg)}
.auth-card{width:100%;max-width:420px;background:#fff;border-radius:18px;padding:36px;box-shadow:var(--shadow);border:1px solid var(--line)}
.auth-card h2{font-size:1.5rem}.auth-card .alert:first-child{margin-top:0;margin-bottom:18px}
.auth-foot{margin-top:24px;display:flex;gap:18px;font-size:.82rem}.auth-foot a{color:var(--muted)}

/* Admin */
.table-card{overflow:hidden}.scroll-x{overflow-x:auto}
.table{width:100%;border-collapse:collapse;font-size:.92rem}
.table th{text-align:left;font-size:.75rem;text-transform:uppercase;letter-spacing:.07em;color:var(--muted);padding:12px 16px;background:#F6FAFB;border-bottom:1px solid var(--line);white-space:nowrap}
.table td{padding:13px 16px;border-bottom:1px solid #EAF0F2;vertical-align:middle}
.table tr:last-child td{border-bottom:0}.table tbody tr:hover{background:#FAFCFC}
.table .num{text-align:right}.table td.actions{white-space:nowrap;text-align:right}
.matrix .cell{text-align:center;padding:13px 6px;width:34px}
.matrix .sticky{position:sticky;left:0;background:#fff;z-index:1}
.matrix thead .sticky{background:#F6FAFB}
.dot{display:inline-block;width:14px;height:14px;border-radius:50%;vertical-align:middle}
.dot-done{background:var(--ok)}.dot-part{background:var(--warn)}.dot-none{background:#DCE5E8}
.legend{display:block}p.legend{margin-top:12px}
.lesson-key{columns:2;padding-left:0;list-style:none;font-size:.88rem;color:var(--muted)}
.lesson-key span{display:inline-block;min-width:24px;font-weight:800;color:var(--petrol)}
.stat-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(170px,1fr));gap:16px;margin-bottom:24px}
.stat{background:#fff;border:1px solid var(--line);border-radius:var(--r);padding:18px;box-shadow:var(--shadow);display:flex;flex-direction:column;gap:2px}
.stat strong{font-size:1.9rem;font-weight:800;line-height:1.1}.stat>span:last-child{color:var(--muted);font-size:.85rem}
.stat-ic{width:38px;height:38px;border-radius:10px;background:#E3F4F4;color:var(--petrol);display:grid;place-items:center;margin-bottom:8px}
.checklist{margin-bottom:24px}
.steps{list-style:none;padding:0;margin:0;display:grid;gap:14px}
.steps li{display:flex;gap:14px;align-items:flex-start}
.steps li>span{width:28px;height:28px;border-radius:50%;border:2px solid var(--line);display:grid;place-items:center;color:transparent;flex:none}
.steps li.done>span{background:var(--ok);border-color:var(--ok);color:#fff}
.steps li.done strong{text-decoration:line-through;color:var(--muted)}
.steps small{display:block;color:var(--muted)}
.activity{list-style:none;margin:0;padding:0;display:grid;gap:14px}
.activity li{display:flex;gap:12px;align-items:flex-start;justify-content:space-between}
.activity li>div small{display:block}
.avatar{width:36px;height:36px;border-radius:50%;background:var(--petrol);color:#fff;display:inline-grid;place-items:center;font-weight:800;font-size:.8rem;flex:none}
.avatar-lg{width:60px;height:60px;font-size:1.2rem}
.user-cell{display:flex;gap:12px;align-items:center}
.profile-head{display:flex;gap:18px;align-items:center}
.mod{border:1px solid var(--line);border-radius:12px;padding:14px;margin-top:14px;background:#FAFCFC}
.mod-head{display:flex;gap:12px;align-items:center;justify-content:space-between;margin-bottom:10px;flex-wrap:wrap}
.adm-lessons{list-style:none;margin:0 0 10px;padding:0;display:grid;gap:6px}
.adm-lessons li{display:flex;align-items:center;gap:12px;background:#fff;border:1px solid var(--line);border-radius:10px;padding:8px 12px}
.adm-num{width:26px;height:26px;border-radius:50%;background:#E4EEF1;display:grid;place-items:center;font-size:.78rem;font-weight:800;flex:none}
.adm-title{flex:1;min-width:0;display:flex;flex-direction:column;text-decoration:none;color:var(--text)}
.adm-title small{display:flex;gap:4px;align-items:center}
.enrolled{display:flex;align-items:center;gap:10px}.enrolled a{flex:1;min-width:0;overflow:hidden;text-overflow:ellipsis}.enrolled form{margin:0}
.enrolled .avatar{width:28px;height:28px;font-size:.7rem}
.mini-stats{display:grid;grid-template-columns:1fr 1fr;gap:12px}
.mini-stats strong{display:block;font-size:1.6rem;font-weight:800}.mini-stats span{color:var(--muted);font-size:.8rem}
.add-lesson{margin-top:6px}
select[multiple]{padding:6px}

.error-box{max-width:520px;margin:80px auto;text-align:center;padding:0 20px}
.error-code{font-size:5rem;font-weight:800;background:var(--grad);-webkit-background-clip:text;background-clip:text;color:transparent;line-height:1}

/* Responsive */
@media (max-width:1000px){
  .lesson-layout{grid-template-columns:minmax(0,1fr)}.lesson-side{position:static}.side-scroll{max-height:none}
  .editor-layout,.two-col,.two-col.wide-left{grid-template-columns:minmax(0,1fr)}
  .hero-course .course-head{grid-template-columns:1fr}.course-head-cover{display:none}
}
@media (max-width:760px){
  .nav-toggle{display:block}
  .nav{display:none;position:absolute;top:100%;left:0;right:0;background:var(--navy);flex-direction:column;align-items:stretch;padding:8px 20px 16px;border-top:1px solid rgba(255,255,255,.1)}
  .nav.is-open{display:flex}.topbar-inner{position:relative}
  .auth-wrap{grid-template-columns:1fr}.auth-hero{display:none}.auth-panel{min-height:100vh;background:var(--bg)}
  .auth-card{padding:26px}
  .pad{padding:18px}.hero{padding:30px 0}
  .pc-time{margin:0 4px;font-size:.78rem}.pc-pip,.pc-vol .vol-range{display:none}.pc-btn{width:36px}
  .player-bigplay{width:64px;height:64px}
  .lesson-key{columns:1}
  .footer a{margin:0 16px 0 0}
}
@media (prefers-reduced-motion:reduce){*{transition:none!important;animation:none!important}}

.lesson-main,.lesson-side,.editor-main,.editor-side{min-width:0}
.h3 .icon,h3 .icon,h2 .icon{width:1em;height:1em}
.activity li>.avatar+div{flex:1;min-width:0}

/* Drag & Drop – Reihenfolge im Admin */
.drag-handle{display:inline-grid;place-items:center;width:26px;height:32px;color:#9DB0B8;cursor:grab;flex:none;border-radius:6px;touch-action:none}
.drag-handle:hover{color:var(--petrol);background:#E4EEF1}
.drag-handle:active{cursor:grabbing}
.drag-handle .icon{width:18px;height:18px}
.reorder-hint{display:flex;gap:8px;align-items:center;margin:0 0 4px}
.mod.is-dragging,.adm-lessons li.is-dragging{opacity:.45;box-shadow:0 0 0 2px var(--teal)}
.adm-lessons{min-height:38px;border-radius:10px;transition:background .15s}
.adm-lessons:empty{border:2px dashed var(--line);margin-bottom:10px}
.adm-lessons:empty::after{content:"Lektion hierher ziehen";display:block;text-align:center;color:var(--muted);font-size:.85rem;padding:7px}
.is-sorting-lesson .adm-lessons{background:rgba(1,174,171,.05)}
.adm-lessons.is-target{background:rgba(1,174,171,.12);outline:2px dashed var(--teal);outline-offset:2px}
.reorder-status{position:sticky;bottom:16px;margin-top:14px;display:inline-block;background:var(--navy);color:#fff;padding:8px 16px;border-radius:99px;font-size:.88rem;font-weight:700;box-shadow:var(--shadow)}
.reorder-status.is-bad{background:var(--danger)}

/* Bilder & Grafiken */
.media-stage{margin:0 0 18px;background:var(--navy,#1B333E);border-radius:var(--radius,14px);overflow:hidden;text-align:center}
.media-stage a{display:block;cursor:zoom-in}
.media-stage img{display:block;max-width:100%;max-height:72vh;width:auto;height:auto;margin:0 auto;object-fit:contain}
.media-stage figcaption{padding:10px 16px;color:#d8e4e8;font-size:.9rem;background:rgba(0,0,0,.25)}
.prose .lesson-fig{margin:18px 0;text-align:center}
.prose .lesson-fig a{display:inline-block;cursor:zoom-in;max-width:100%}
.prose .lesson-fig img{max-width:100%;height:auto;border-radius:10px;border:1px solid var(--line,#e2e8ea);background:#fff}
.prose .lesson-fig figcaption{margin-top:6px;font-size:.88rem;color:var(--muted,#5f7a84)}
.finish-bar{margin:0 0 16px}
.lightbox{position:fixed;inset:0;z-index:1000;background:rgba(10,20,25,.92);display:flex;flex-direction:column;align-items:center;justify-content:center;padding:24px;cursor:zoom-out}
.lightbox img{max-width:100%;max-height:calc(100vh - 90px);object-fit:contain;border-radius:6px;background:#fff;cursor:default}
.lightbox p{color:#d8e4e8;margin:12px 0 0;text-align:center}
.lightbox-close{position:absolute;top:12px;right:16px;width:44px;height:44px;border:0;border-radius:50%;background:rgba(255,255,255,.14);color:#fff;font-size:28px;line-height:1;cursor:pointer}
.lightbox-close:hover{background:rgba(255,255,255,.28)}
body.no-scroll{overflow:hidden}
.img-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(230px,1fr));gap:14px;margin:14px 0}
.img-card{position:relative;display:flex;flex-direction:column;gap:8px;padding:10px;border:1px solid var(--line,#e2e8ea);border-radius:12px;background:#fff;min-width:0}
.img-card.is-main{border-color:var(--teal,#01AEAB);box-shadow:0 0 0 2px rgba(1,174,171,.25)}
.img-thumb{display:grid;place-items:center;height:150px;background:#f3f6f7;border-radius:8px;overflow:hidden}
.img-thumb img{max-width:100%;max-height:100%;object-fit:contain}
.img-badge{position:absolute;top:16px;left:16px}
.img-name{overflow-wrap:anywhere}
.img-caption{display:flex;gap:6px}.img-caption input{flex:1;min-width:0}
.img-actions{display:flex;flex-wrap:wrap;gap:6px;align-items:center}.img-actions form{margin:0}

/* Slideshow */
.slideshow{margin:0 0 18px;background:var(--navy);border-radius:var(--radius,14px);overflow:hidden;outline:none}
.slide-stage{position:relative;display:grid;place-items:center;min-height:240px}
.slide{margin:0;width:100%;text-align:center}
.slide[hidden]{display:none}
.slide a{display:block;cursor:zoom-in}
.slide img{display:block;max-width:100%;max-height:68vh;width:auto;height:auto;margin:0 auto;object-fit:contain}
.slide figcaption{padding:10px 56px;color:#d8e4e8;font-size:.92rem;background:rgba(0,0,0,.25)}
.slide-nav{position:absolute;top:50%;transform:translateY(-50%);width:46px;height:46px;border:0;border-radius:50%;background:rgba(1,174,171,.92);color:#fff;display:grid;place-items:center;cursor:pointer;box-shadow:0 4px 16px rgba(0,0,0,.35)}
.slide-nav:hover{background:var(--teal)}.slide-nav .icon{width:22px;height:22px}
.slide-prev{left:12px}.slide-next{right:12px}
.slide-bar{display:flex;align-items:center;gap:14px;padding:10px 16px;background:rgba(0,0,0,.28);color:#fff;flex-wrap:wrap}
.slide-count{font-weight:700;font-size:.9rem;min-width:52px}
.slide-dots{display:flex;gap:7px;flex:1;flex-wrap:wrap}
.slide-dot{width:11px;height:11px;border-radius:50%;border:0;padding:0;background:rgba(255,255,255,.35);cursor:pointer}
.slide-dot.is-active{background:var(--teal);transform:scale(1.25)}
.muted-light{color:#b8cad0}
.slide-actions{display:flex;gap:6px;flex-wrap:wrap;margin:0}
.dz-check{justify-content:center;margin:8px 0}
@media(max-width:640px){.slide-bar .muted-light{display:none}.slide figcaption{padding:10px 16px}.slide-nav{width:40px;height:40px}}

/* Vorschaubild */
.poster-box{margin-top:18px;padding-top:16px;border-top:1px solid var(--line)}
.poster-row{display:grid;grid-template-columns:minmax(0,220px) minmax(0,1fr);gap:18px;align-items:start;margin-top:10px}
.poster-current{aspect-ratio:16/9;background:#eef3f4;border-radius:10px;display:grid;place-items:center;text-align:center;padding:8px;overflow:hidden}
.poster-current img{width:100%;height:100%;object-fit:cover;border-radius:6px}
.poster-tools{display:flex;flex-direction:column;gap:12px;min-width:0}
#poster-seek{width:100%}
@media(max-width:640px){.poster-row{grid-template-columns:minmax(0,1fr)}}

/* YouTube */
.yt-frame,.yt-frame iframe{position:absolute;inset:0;width:100%;height:100%;border:0;display:block}
.yt-consent{position:absolute;inset:0;z-index:3;display:grid;place-items:center;padding:20px;background:var(--grad);text-align:center;overflow:auto}
.yt-consent[hidden]{display:none}
.yt-consent-box{max-width:520px;display:flex;flex-direction:column;align-items:center;gap:10px}
.yt-consent-box>.icon{width:40px;height:40px;opacity:.75}
.yt-consent-box p{margin:0}.yt-consent-box a{color:#9fe9e8;text-decoration:underline}
.yt-player .player-end{z-index:4}
.video-remove{display:flex;flex-wrap:wrap;gap:8px;margin:10px 0}
.assign-row{display:flex;align-items:center;gap:10px;justify-content:space-between;margin:2px 0}