/* ============================================================
   NO WAVE コース受講ポータル (course-hub)
   Warm Editorial (navy × beaver tan) — 講座デッキ deck.css と同系統
   参照レイアウト: LMSポータル (左nav + カードグリッド + 新着レール)
   ============================================================ */
@import url('https://fonts.googleapis.com/css2?family=Cormorant+Garamond:wght@500;600;700&family=Shippori+Mincho:wght@700;800&family=Arimo:wght@400;700&family=Noto+Sans+JP:wght@400;500;700&display=swap');

:root{
  --ink:#1B2A4A; --ink-deep:#16203A; --ink-2:#2C3650;
  --slate:#4A5260; --slate-2:#5A6473; --mute:#8A93A3;
  --line:#D4DBE8; --line-soft:#E2E5EC; --fill:#EAEEF5; --fill-2:#F0F1F4;
  --paper:#F7F8FA; --white:#FFFFFF;
  --beaver:#6B4A2F; --beaver-tan:#A9743F; --beaver-cream:#EbdCc7;
  --good:#2E6B4F; --bad:#A24B4B; --amber:#E6A700;
  --font-en:'Cormorant Garamond',serif;
  --font-jp:'Shippori Mincho',serif;
  --font-sans:'Arimo','Noto Sans JP',-apple-system,'Hiragino Kaku Gothic ProN',sans-serif;
  --sidebar-w:248px;
  --radius:16px;
}
*{box-sizing:border-box;margin:0;padding:0}
html,body{background:var(--paper)}
body{
  font-family:var(--font-sans); color:var(--ink);
  -webkit-font-smoothing:antialiased; text-rendering:optimizeLegibility;
  font-variant-numeric:lining-nums tabular-nums; font-feature-settings:"lnum" 1,"tnum" 1;
}
a{color:inherit;text-decoration:none}
img{display:block;max-width:100%}

/* ---- app shell ---- */
.app{display:grid;grid-template-columns:var(--sidebar-w) 1fr;min-height:100vh}

/* ---- sidebar ---- */
.side{
  position:sticky;top:0;align-self:start;height:100vh;
  background:linear-gradient(168deg,var(--ink) 0%,var(--ink-deep) 68%,#0f1830 100%);
  color:#dfe5ef; display:flex;flex-direction:column;padding:26px 18px 20px;
}
.side__brand{display:flex;align-items:center;gap:11px;padding:2px 8px 22px}
.side__brand img{width:40px;height:40px}
.side__brand .nm{font-family:var(--font-jp);font-weight:800;font-size:20px;letter-spacing:.05em;color:#fff;line-height:1}
.side__brand .tg{font-family:var(--font-en);font-size:10.5px;letter-spacing:.24em;color:var(--beaver-cream);text-transform:uppercase;margin-top:5px}
.nav{display:flex;flex-direction:column;gap:3px;margin-top:6px}
.nav a{
  display:flex;align-items:center;gap:12px;padding:11px 13px;border-radius:11px;
  font-size:14px;font-weight:500;color:#c3cbdb;transition:background .15s,color .15s;
}
.nav a .ic{width:18px;height:18px;flex:none;opacity:.85;stroke:currentColor;fill:none;stroke-width:1.7}
.nav a:hover{background:rgba(255,255,255,.07);color:#fff}
.nav a.on{background:var(--beaver-cream);color:var(--ink-deep);font-weight:700}
.nav a.on .ic{opacity:1}
.side__foot{margin-top:auto;padding-top:18px;border-top:1px solid rgba(255,255,255,.12);display:flex;align-items:center;gap:11px}
.side__foot .av{width:34px;height:34px;border-radius:50%;background:var(--beaver-tan);display:grid;place-items:center;color:#fff;font-weight:700;font-size:14px;font-family:var(--font-en)}
.side__foot .nm{font-size:13px;font-weight:700;color:#eef2f8}
.side__foot .rl{font-size:11px;color:var(--beaver-cream)}

/* ---- main ---- */
.main{display:grid;grid-template-columns:1fr;min-width:0}
.main.has-rail{grid-template-columns:1fr 300px}
.content{padding:40px clamp(24px,3.4vw,52px) 72px;min-width:0}
.eyebrow{font-family:var(--font-sans);font-weight:700;font-size:12.5px;letter-spacing:.24em;text-transform:uppercase;color:var(--beaver-tan);display:flex;align-items:center;gap:10px}
.eyebrow::before{content:"";width:22px;height:2px;background:var(--beaver-tan)}
h1.page{font-family:var(--font-jp);font-weight:800;font-size:34px;color:var(--ink);margin-top:9px;letter-spacing:.01em}
.lede{font-size:14.5px;color:var(--slate);margin-top:10px;max-width:60ch;line-height:1.7}

/* breadcrumb */
.crumb{display:flex;align-items:center;gap:8px;font-size:12.5px;color:var(--mute);margin-bottom:14px}
.crumb a:hover{color:var(--beaver-tan)}
.crumb .sep{opacity:.6}

/* ---- course grid (portal top) ---- */
.grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(268px,1fr));gap:22px;margin-top:26px}
.ccard{background:var(--white);border:1px solid var(--line-soft);border-radius:var(--radius);overflow:hidden;display:flex;flex-direction:column;transition:box-shadow .18s,transform .18s}
.ccard:hover{box-shadow:0 14px 34px rgba(20,32,58,.14);transform:translateY(-3px)}
.ccard__cover{position:relative;aspect-ratio:16/9;background:var(--fill);overflow:hidden}
.ccard__cover img{width:100%;height:100%;object-fit:cover}
.ccard__badge{position:absolute;left:12px;bottom:12px;background:var(--ink-deep);color:#fff;font-family:var(--font-jp);font-weight:700;font-size:13.5px;padding:6px 13px;border-radius:8px;box-shadow:0 4px 14px rgba(0,0,0,.25)}
.ccard__badge.tan{background:var(--beaver-tan)}
.ccard__b{padding:17px 18px 18px;display:flex;flex-direction:column;flex:1}
.ccard__t{font-family:var(--font-jp);font-weight:800;font-size:19px;color:var(--ink);line-height:1.4}
.ccard__meta{font-size:11.5px;color:var(--mute);margin-top:7px}
.ccard__desc{font-size:13px;color:var(--slate);line-height:1.7;margin-top:10px;flex:1}
.ccard__stat{display:flex;align-items:center;gap:9px;margin-top:14px;font-size:12px;color:var(--slate-2)}
.pill{display:inline-flex;align-items:center;gap:5px;font-size:11px;font-weight:700;padding:3px 9px;border-radius:20px}
.pill.ok{background:rgba(46,107,79,.12);color:var(--good)}
.pill.wait{background:var(--fill);color:var(--mute)}
.pill.dot::before{content:"";width:6px;height:6px;border-radius:50%;background:currentColor}
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;margin-top:16px;padding:11px 16px;border-radius:11px;font-weight:700;font-size:14px;background:linear-gradient(180deg,var(--ink) 0%,var(--ink-deep) 100%);color:#fff;transition:filter .15s,transform .1s}
.btn:hover{filter:brightness(1.12)}
.btn:active{transform:translateY(1px)}
.btn.tan{background:linear-gradient(180deg,var(--beaver-tan) 0%,var(--beaver) 100%)}
.btn.ghost{background:none;border:1px solid var(--line);color:var(--ink)}
.btn.ghost:hover{background:var(--fill);filter:none}

/* ---- lesson list (course detail) ---- */
.llist{display:flex;flex-direction:column;gap:10px;margin-top:24px}
.lrow{display:grid;grid-template-columns:118px 1fr auto;gap:16px;align-items:center;background:var(--white);border:1px solid var(--line-soft);border-radius:13px;padding:12px;transition:box-shadow .15s,transform .12s}
.lrow:hover{box-shadow:0 10px 24px rgba(20,32,58,.1);transform:translateY(-2px)}
.lrow__thumb{position:relative;aspect-ratio:16/9;border-radius:8px;overflow:hidden;background:var(--fill)}
.lrow__thumb img{width:100%;height:100%;object-fit:cover}
.lrow__thumb .no{position:absolute;left:0;top:0;background:var(--ink-deep);color:#fff;font-family:var(--font-en);font-weight:700;font-size:13px;padding:2px 8px;border-bottom-right-radius:8px}
.lrow__body{min-width:0}
.lrow__t{font-family:var(--font-jp);font-weight:700;font-size:16px;color:var(--ink);line-height:1.45}
.lrow__sub{display:flex;align-items:center;gap:10px;margin-top:7px;font-size:11.5px;color:var(--mute);flex-wrap:wrap}
.lrow__act{display:flex;align-items:center;gap:8px}
@media(max-width:560px){.lrow{grid-template-columns:88px 1fr}.lrow__act{grid-column:1/-1;justify-content:flex-start}}

/* ---- watch page ---- */
.watch{max-width:940px}
.player{position:relative;aspect-ratio:16/9;background:var(--ink-deep);border-radius:14px;overflow:hidden;box-shadow:0 18px 46px rgba(20,32,58,.22)}
.player iframe{position:absolute;inset:0;width:100%;height:100%;border:0}
.player .wait{position:absolute;inset:0;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:14px;color:#cdd6e6;text-align:center;padding:24px}
.player .wait img{width:78px;height:78px;opacity:.9}
.player .wait b{font-family:var(--font-jp);font-weight:700;font-size:18px;color:#fff}
.watch__title{font-family:var(--font-jp);font-weight:800;font-size:26px;color:var(--ink);margin:22px 0 4px;line-height:1.4}
.watch__acts{display:flex;gap:11px;flex-wrap:wrap;margin-top:16px}
.nav-lr{display:flex;justify-content:space-between;gap:12px;margin-top:30px;border-top:1px solid var(--line);padding-top:20px}
.nav-lr a{max-width:46%;font-size:13px;color:var(--slate)}
.nav-lr a:hover{color:var(--beaver-tan)}
.nav-lr .dir{font-size:11px;color:var(--mute);font-weight:700;letter-spacing:.08em}
.nav-lr .lt{font-family:var(--font-jp);font-weight:700;color:var(--ink);margin-top:3px;display:block}
.nav-lr .r{text-align:right}
details.script{margin-top:26px;background:var(--white);border:1px solid var(--line-soft);border-radius:12px;padding:4px 18px}
details.script summary{cursor:pointer;font-weight:700;font-size:14px;color:var(--ink);padding:14px 0;list-style:none}
details.script summary::-webkit-details-marker{display:none}
details.script summary::before{content:"▸ ";color:var(--beaver-tan)}
details.script[open] summary::before{content:"▾ "}
details.script .sc{white-space:pre-wrap;font-size:13.5px;line-height:1.9;color:var(--slate);padding:0 0 18px;border-top:1px solid var(--line-soft);margin-top:2px;padding-top:14px}

/* ---- right rail (new content) ---- */
.rail{border-left:1px solid var(--line);padding:40px 24px 40px;background:linear-gradient(180deg,#fbfcfe 0%,var(--paper) 100%)}
.rail__h{display:flex;align-items:baseline;justify-content:space-between}
.rail__h .en{font-family:var(--font-en);font-weight:700;font-size:13px;letter-spacing:.16em;color:var(--beaver-tan)}
.rail__h .all{font-size:11.5px;color:var(--mute)}
.rail__h .jp{font-family:var(--font-jp);font-weight:700;font-size:16px;color:var(--ink)}
.rail__list{display:flex;flex-direction:column;gap:14px;margin-top:16px}
.ritem{display:grid;grid-template-columns:78px 1fr;gap:11px;align-items:center}
.ritem__th{aspect-ratio:16/9;border-radius:7px;overflow:hidden;background:var(--fill)}
.ritem__th img{width:100%;height:100%;object-fit:cover}
.ritem__t{font-size:12.5px;font-weight:700;color:var(--ink);line-height:1.4}
.ritem__m{font-size:10.5px;color:var(--mute);margin-top:4px}
.rail__empty{margin-top:16px;font-size:12.5px;color:var(--mute);line-height:1.8;background:var(--white);border:1px dashed var(--line);border-radius:11px;padding:16px}

/* ---- responsive: sidebar → top ---- */
@media(max-width:840px){
  .app{grid-template-columns:1fr}
  .side{position:static;height:auto;flex-direction:row;align-items:center;padding:12px 16px;gap:14px}
  .side__brand{padding:0;border:0}
  .nav{flex-direction:row;flex-wrap:wrap;margin:0;flex:1;justify-content:flex-end;gap:2px}
  .nav a{padding:8px 10px;font-size:12.5px}
  .nav a .ic{display:none}
  .side__foot{display:none}
  .main.has-rail{grid-template-columns:1fr}
  .rail{border-left:0;border-top:1px solid var(--line)}
}