/* Kairos «Мої курси»: спершу телефон, потім ПК */
:root{--navy:#0F1D2E;--navy2:#17304C;--blue:#1F5FA8;--blue2:#4A90E2;--bg:#F2F5F9;--card:#fff;--ink:#13253A;--muted:#5B6B7F;--line:#DCE4EE;--red:#D63B3B;--green:#2E9E5B}
*{box-sizing:border-box;-webkit-tap-highlight-color:transparent}
html,body{margin:0;background:var(--bg);color:var(--ink);font:16px/1.45 system-ui,-apple-system,"Segoe UI",Roboto,sans-serif}
[hidden]{display:none!important}
.view{min-height:100vh;min-height:100dvh}
.logo{font-weight:800;letter-spacing:.22em;font-size:28px;color:#fff;border-bottom:3px solid var(--blue2);padding-bottom:4px;display:inline-block}
.logo.sm{font-size:16px;border-bottom-width:2px}
.muted{color:var(--muted)}.small{font-size:13px}
.err{color:var(--red);font-size:14px;margin:0}
.btn{border:0;border-radius:12px;padding:12px 18px;font:600 16px system-ui,sans-serif;cursor:pointer;background:var(--line);color:var(--ink)}
.btn.primary{background:var(--blue);color:#fff}
.btn:disabled{opacity:.45;cursor:default}
.btn.big{padding:14px 22px;font-size:17px}
.link{background:none;border:0;color:#fff;font:600 15px system-ui,sans-serif;padding:8px 4px;cursor:pointer}
/* вхід */
#v-login{background:linear-gradient(160deg,var(--navy),var(--navy2));display:grid;place-items:center;padding:24px max(16px,env(safe-area-inset-left))}
.login{width:100%;max-width:380px;display:flex;flex-direction:column;align-items:center;gap:14px}
.login h1{color:#fff;font-size:22px;margin:4px 0 6px}
.login form{width:100%;background:var(--card);border-radius:18px;padding:20px;display:flex;flex-direction:column;gap:12px}
.login label{display:flex;flex-direction:column;gap:6px;font-size:13px;color:var(--muted)}
.login input{border:1px solid var(--line);border-radius:10px;padding:12px;font-size:16px;color:var(--ink)}
.login .muted{color:#AFC3DA}
/* шапка */
.bar{position:sticky;top:0;z-index:5;background:var(--navy);color:#fff;display:flex;align-items:center;gap:12px;padding:calc(10px + env(safe-area-inset-top)) 16px 10px;min-height:52px}
.bar .title{font-weight:700;overflow:hidden;text-overflow:ellipsis;white-space:nowrap;flex:1}
.bar #b-logout{margin-left:auto}
.wrap{max-width:760px;margin:0 auto;padding:16px max(16px,env(safe-area-inset-left)) 40px}
h2{margin:6px 0 2px;font-size:22px}
/* курси */
.cards{display:flex;flex-direction:column;gap:12px;margin-top:14px}
.card{background:var(--card);border-radius:16px;padding:16px;display:flex;align-items:center;gap:14px;border:1px solid var(--line);cursor:pointer;text-align:left;font:inherit;color:inherit}
.card .ic{width:46px;height:46px;border-radius:12px;background:var(--blue);color:#fff;display:grid;place-items:center;font:800 20px system-ui;flex:none}
.card b{display:block;font-size:17px}
.card .go{margin-left:auto;color:var(--muted);font-size:22px}
/* заняття */
.live{background:var(--card);border:1px solid var(--line);border-radius:16px;padding:16px;display:grid;grid-template-columns:auto 1fr;gap:4px 12px;align-items:center}
.live .btn{grid-column:1/-1;margin-top:10px;width:100%}
.live-dot{width:12px;height:12px;border-radius:50%;background:var(--line)}
.live.on{border-color:var(--red);box-shadow:0 0 0 3px rgba(214,59,59,.12)}
.live.on .live-dot{background:var(--red);animation:pulse 1.4s infinite}
.live-text{display:flex;flex-direction:column}
@keyframes pulse{50%{opacity:.3}}
/* вкладки */
.tabs{display:flex;gap:6px;margin:18px 0 12px;background:var(--line);padding:4px;border-radius:12px}
.tabs button{flex:1;border:0;background:none;border-radius:9px;padding:10px 4px;font:600 14px system-ui;color:var(--muted);cursor:pointer}
.tabs button.on{background:var(--card);color:var(--ink);box-shadow:0 1px 3px rgba(0,0,0,.08)}
.item{background:var(--card);border:1px solid var(--line);border-radius:14px;padding:14px;display:flex;align-items:center;gap:12px;margin-bottom:10px}
.item .ic{width:42px;height:42px;border-radius:10px;display:grid;place-items:center;flex:none;font-size:20px;background:#E2ECF8}
.item .t{flex:1;min-width:0}.item .t b{display:block;overflow:hidden;text-overflow:ellipsis}
.item .btn{padding:9px 14px;font-size:14px}
.empty{color:var(--muted);text-align:center;padding:30px 10px}
/* чат */
.chat{display:flex;flex-direction:column;gap:10px}
.chat-list{display:flex;flex-direction:column;gap:8px;max-height:55vh;overflow:auto;padding:4px}
.msg{background:var(--card);border:1px solid var(--line);border-radius:12px;padding:8px 12px;max-width:88%}
.msg.me{align-self:flex-end;background:#DCEBFB;border-color:#C6DCF4}
.msg small{display:block;color:var(--muted);font-size:12px}
.chat-form{display:flex;gap:8px;position:sticky;bottom:calc(8px + env(safe-area-inset-bottom))}
.chat-form input{flex:1;border:1px solid var(--line);border-radius:12px;padding:12px;font-size:16px}
/* плеєр */
.player{background:#000}
.bar.dark{background:#000}
.video-wrap{position:relative;background:#000}
video{width:100%;max-height:calc(100dvh - 120px);display:block;background:#000}
.wm{position:absolute;pointer-events:none;color:rgba(255,255,255,.28);font:600 clamp(11px,1.6vw,16px) system-ui;text-shadow:0 0 2px rgba(0,0,0,.4);transition:top 1s,left 1s;white-space:nowrap;user-select:none}
.speeds{display:flex;gap:6px;align-items:center;justify-content:center;padding:12px;color:#ccc}
.speeds button{background:#222;color:#ddd;border:0;border-radius:8px;padding:8px 12px;font:600 14px system-ui}
.speeds button.on{background:var(--blue);color:#fff}
.toast{position:fixed;left:50%;bottom:calc(20px + env(safe-area-inset-bottom));transform:translateX(-50%);background:var(--navy);color:#fff;padding:10px 16px;border-radius:12px;font-size:14px;z-index:20;max-width:90vw}
@media (min-width:800px){.cards{display:grid;grid-template-columns:1fr 1fr}}
/* власна смуга перемотки: добре видно в темній темі */
.seek{display:flex;align-items:center;gap:10px;padding:14px max(16px,env(safe-area-inset-left)) 4px;color:#ddd;font:600 13px system-ui;font-variant-numeric:tabular-nums}
.seek input{flex:1;-webkit-appearance:none;appearance:none;height:6px;border-radius:3px;background:linear-gradient(to right,#4A90E2 var(--p,0%),#444 var(--p,0%));outline:none}
.seek input::-webkit-slider-thumb{-webkit-appearance:none;width:20px;height:20px;border-radius:50%;background:#fff;border:3px solid #4A90E2;box-shadow:0 0 0 4px rgba(74,144,226,.25);cursor:pointer}
.seek input::-moz-range-thumb{width:16px;height:16px;border-radius:50%;background:#fff;border:3px solid #4A90E2;cursor:pointer}
/* ── ПК (ширина ≥1000px): темна тема «як Листоноша», ліва колонка курсів + курс праворуч ── */
body.wide{--bg:#15191E;--card:#1E242B;--ink:#E6EBF1;--muted:#8E9AA8;--line:#2B333C;--blue:#3D7BE0;--blue2:#5B9BF0;background:var(--bg)}
body.wide #app{display:grid;grid-template-columns:300px 1fr;height:100vh;height:100dvh;overflow:hidden}
body.wide #v-login{grid-column:1/-1}
body.wide #v-login .login form{background:#1E242B}
body.wide #v-login .login input{background:#15191E;color:var(--ink);border-color:var(--line)}
body.wide #v-courses{grid-column:1;min-height:0;overflow:auto;background:#191E24;border-right:1px solid var(--line)}
body.wide #v-course,body.wide #v-player{grid-column:2;min-height:0;overflow:auto}
body.wide #v-player{background:#0E1114}
body.wide .bar{background:transparent;border-bottom:1px solid var(--line);position:sticky}
body.wide #v-courses .bar{background:#191E24}
body.wide #v-course .bar,body.wide #v-player .bar{background:var(--bg)}
body.wide #v-player .bar{background:#0E1114}
body.wide #b-back{display:none}
body.wide #v-courses .wrap{padding:14px 12px}
body.wide #v-courses h2{font-size:15px;color:var(--ink);margin:4px 8px 0}
body.wide #v-courses .muted{margin:2px 8px 10px}
body.wide .cards{display:flex;flex-direction:column;gap:4px;margin-top:6px}
body.wide .card{background:transparent;border:0;border-radius:12px;padding:10px 12px;color:var(--ink)}
body.wide .card:hover{background:#232A32}
body.wide .card.on{background:#24364F}
body.wide .card .ic{width:38px;height:38px;border-radius:10px;font-size:17px}
body.wide .card b{font-size:15px}
body.wide .card .go{display:none}
body.wide #v-course .wrap{max-width:1100px;padding:20px 28px 40px}
body.wide .live{background:linear-gradient(135deg,#1E2A3A,#1E242B);border-color:var(--line)}
body.wide .live .btn{grid-column:3;grid-row:1/3;width:auto;margin:0}
body.wide .live{grid-template-columns:auto 1fr auto}
body.wide .tabs{background:#1E242B;max-width:520px}
body.wide .tabs button.on{background:var(--blue);color:#fff;box-shadow:none}
body.wide .item{background:var(--card);border-color:var(--line)}
body.wide .item .ic{background:#24364F}
body.wide .btn{background:#2B333C;color:var(--ink)}
body.wide .btn.primary{background:var(--blue);color:#fff;border-radius:999px;padding:10px 20px}
body.wide #t-rec,body.wide #t-mat{display:grid;grid-template-columns:repeat(auto-fill,minmax(380px,1fr));gap:10px}
body.wide #t-rec[hidden],body.wide #t-mat[hidden]{display:none!important}
body.wide #t-rec .item,body.wide #t-mat .item{margin:0}
body.wide .chat-list{max-height:calc(100dvh - 330px)}
body.wide .msg{background:var(--card);border-color:var(--line)}
body.wide .msg.me{background:#24364F;border-color:#2F4A6C}
body.wide .chat-form input{background:var(--card);color:var(--ink);border-color:var(--line)}
body.wide video{max-height:calc(100dvh - 190px)}
body.wide .toast{background:#24364F}
body.wide .empty{color:var(--muted)}