/* =============================================================
   ap0t · LMS — shared shell styles
   Loaded by index.html and every course page.
   ============================================================= */

:root{
  --bg: #0b1020;
  --bg-soft: #131a33;
  --card: #161e3a;
  --card-2: #1b254a;
  --border: #283260;
  --text: #e9edff;
  --muted: #a6b0d8;
  --accent: #7c5cff;
  --accent-2: #00d4ff;
  --good: #2ecc71;
  --warn: #ffb020;
  --danger: #ff5d6c;
  --hindi: #ffd166;
  --tech: #00d4ff;
  --tag: #2a3470;
  --shadow: 0 10px 40px rgba(0,0,0,.35);
  --radius: 14px;
}
[data-theme="light"]{
  --bg:#f6f7fb;
  --bg-soft:#ffffff;
  --card:#ffffff;
  --card-2:#f1f3fb;
  --border:#e4e8f4;
  --text:#0d1330;
  --muted:#5a6588;
  --accent:#5b3df5;
  --accent-2:#0099c4;
  --hindi:#b8860b;
  --tech:#0a84ff;
  --tag:#e7eaf7;
  --shadow: 0 8px 30px rgba(20,30,80,.08);
}

*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  margin:0;
  font-family: ui-sans-serif, system-ui, -apple-system, "Segoe UI", Roboto, Inter, "Helvetica Neue", Arial, sans-serif;
  color:var(--text);
  background:
    radial-gradient(1200px 700px at 80% -10%, rgba(124,92,255,.18), transparent 60%),
    radial-gradient(900px 500px at -10% 10%, rgba(0,212,255,.12), transparent 60%),
    var(--bg);
  line-height:1.55;
  -webkit-font-smoothing:antialiased;
}
a{color:var(--accent-2); text-decoration:none}
a:hover{text-decoration:underline}

/* Layout */
.shell{display:grid; grid-template-columns: 280px 1fr; min-height:100vh}
.sidebar{
  position:sticky; top:0; align-self:start; height:100vh; overflow:auto;
  padding:24px 18px; border-right:1px solid var(--border);
  background: linear-gradient(180deg, var(--bg-soft), transparent);
  backdrop-filter: blur(8px);
}
.brand-link{display:flex; align-items:center; gap:10px; margin-bottom:16px; color:var(--text); text-decoration:none}
.brand-link:hover{text-decoration:none; opacity:.9}
.logo{
  width:38px;height:38px;border-radius:10px;
  background: conic-gradient(from 200deg, var(--accent), var(--accent-2), var(--accent));
  box-shadow: 0 6px 20px rgba(124,92,255,.45);
  display:grid;place-items:center;color:#0b1020;font-weight:900;
}
.brand-link h1{font-size:16px; margin:0; letter-spacing:.2px}
.brand-link p{margin:0; font-size:12px; color:var(--muted)}

.nav{display:flex; flex-direction:column; gap:4px; margin-top:10px}
.nav a{
  color:var(--text); padding:8px 10px; border-radius:10px; font-size:14px;
  display:flex; align-items:center; gap:8px; opacity:.85;
}
.nav a:hover{background:var(--card); text-decoration:none; opacity:1}
.nav a.active{background:var(--card); opacity:1; border:1px solid var(--border)}
.nav a.section{font-size:13px; padding-left:22px; opacity:.7}
.nav a.section:hover{opacity:1}
.nav a .ico{width:20px; display:inline-grid; place-items:center; font-size:15px}
.nav a .badge{margin-left:auto; font-size:10px; padding:2px 6px; border-radius:999px; background:var(--tag); color:var(--muted)}
.nav a .badge.soon{color:var(--warn)}
.nav a .badge.live{color:var(--good)}
.nav .grp{font-size:11px; text-transform:uppercase; letter-spacing:.12em; color:var(--muted); margin:14px 6px 4px}

.sidebar-footer{
  margin-top:18px; padding-top:14px; border-top:1px solid var(--border);
  display:flex; gap:8px; flex-wrap:wrap;
}

.main{padding:32px 36px 80px; max-width:1200px}
@media (max-width: 900px){
  .shell{grid-template-columns: 1fr}
  .sidebar{position:relative; height:auto; border-right:none; border-bottom:1px solid var(--border)}
  .main{padding:20px}
  .nav{flex-direction:row; flex-wrap:wrap}
  .nav .grp{width:100%}
  .nav a.section{padding-left:10px}
}

/* Hero */
.hero{
  border:1px solid var(--border);
  background:
    radial-gradient(600px 200px at 10% 0%, rgba(0,212,255,.18), transparent 60%),
    linear-gradient(135deg, var(--card), var(--card-2));
  padding:32px; border-radius:20px; box-shadow:var(--shadow);
  position:relative; overflow:hidden;
}
.hero::after{
  content:""; position:absolute; right:-60px; top:-60px; width:280px; height:280px;
  background: conic-gradient(from 0deg, var(--accent), var(--accent-2), var(--accent));
  filter: blur(60px); opacity:.25; border-radius:50%;
}
.eyebrow{
  display:inline-block; font-size:12px; letter-spacing:.18em; text-transform:uppercase;
  padding:6px 10px; border-radius:999px; background:var(--tag); color:var(--accent-2);
  border:1px solid var(--border);
}
.hero h2{font-size: clamp(28px, 4vw, 44px); margin:14px 0 6px; line-height:1.1; letter-spacing:-.5px}
.hero h2 span{background:linear-gradient(90deg,var(--accent),var(--accent-2)); -webkit-background-clip:text; background-clip:text; color:transparent}
.hero p{color:var(--muted); max-width:780px; font-size:16px}
.hero-meta{display:flex; flex-wrap:wrap; gap:10px; margin-top:18px}
.pill{padding:8px 12px; border-radius:999px; background:var(--tag); border:1px solid var(--border); font-size:13px; color:var(--text)}
.pill b{color:var(--accent-2)}

/* Toolbar */
.toolbar{
  margin: 24px 0; display:flex; gap:10px; flex-wrap:wrap; align-items:center;
  padding:12px; border-radius:14px; border:1px solid var(--border);
  background:var(--card); box-shadow:var(--shadow);
  position:sticky; top:8px; z-index:5;
}
.search{
  flex:1; display:flex; align-items:center; gap:10px;
  background:var(--bg-soft); border:1px solid var(--border); border-radius:10px; padding:10px 12px;
}
.search input{
  flex:1; background:transparent; border:none; outline:none; color:var(--text); font-size:15px;
}
.btn{
  border:1px solid var(--border); background:var(--bg-soft); color:var(--text);
  padding:9px 14px; border-radius:10px; cursor:pointer; font-size:13px;
  display:inline-flex; align-items:center; gap:6px;
  font-family:inherit;
}
.btn:hover{background:var(--card-2)}
.btn.primary{background:linear-gradient(135deg,var(--accent),var(--accent-2)); color:#0b1020; border:none; font-weight:700}
.btn.sm{padding:6px 10px; font-size:12px}

/* Sections (generic) */
section{margin: 40px 0}
.section-head{display:flex; justify-content:space-between; align-items:end; flex-wrap:wrap; gap:10px; margin-bottom:14px}
.section-head h3{font-size:24px; margin:0; letter-spacing:-.3px}
.section-head .sub{color:var(--muted); font-size:14px}

/* Course catalog (home page) */
.course-grid{
  display:grid; grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap:16px; margin-top:24px;
}
.course-card{
  border:1px solid var(--border); background:var(--card); border-radius:var(--radius);
  padding:18px; box-shadow:var(--shadow); transition:transform .15s, border-color .15s;
  display:flex; flex-direction:column; gap:10px;
  color:var(--text); text-decoration:none;
  position:relative; overflow:hidden;
}
.course-card:hover{transform:translateY(-3px); border-color:var(--accent); text-decoration:none}
.course-card .cc-icon{
  width:48px;height:48px;border-radius:12px;
  background:linear-gradient(135deg, rgba(124,92,255,.25), rgba(0,212,255,.25));
  display:grid; place-items:center; font-size:24px;
  border:1px solid var(--border);
}
.course-card h4{margin:0; font-size:18px; letter-spacing:-.2px}
.course-card p{margin:0; color:var(--muted); font-size:14px; flex:1}
.course-card .cc-meta{
  display:flex; gap:8px; flex-wrap:wrap; align-items:center;
  font-size:12px; color:var(--muted); margin-top:6px;
}
.course-card .cc-tag{
  padding:3px 8px; border-radius:999px; background:var(--tag); border:1px solid var(--border);
}
.course-card .cc-status{
  padding:3px 8px; border-radius:999px; font-weight:700; font-size:11px;
  text-transform:uppercase; letter-spacing:.06em;
}
.course-card .cc-status.live{background:rgba(46,204,113,.12); color:var(--good); border:1px solid rgba(46,204,113,.3)}
.course-card .cc-status.draft{background:rgba(255,176,32,.12); color:var(--warn); border:1px solid rgba(255,176,32,.3)}
.course-card .cc-status.soon{background:var(--tag); color:var(--muted); border:1px solid var(--border)}

/* Generic content blocks (callouts, tech-block) — reused across courses */
.callout{
  border:1px solid var(--border); border-left:4px solid var(--accent);
  background:linear-gradient(180deg, rgba(124,92,255,.08), transparent);
  padding:14px 16px; border-radius:10px; margin:14px 0;
}
.callout.good{border-left-color:var(--good); background:linear-gradient(180deg, rgba(46,204,113,.08), transparent)}
.callout.warn{border-left-color:var(--warn); background:linear-gradient(180deg, rgba(255,176,32,.10), transparent)}
.callout h5{margin:0 0 6px; font-size:14px; text-transform:uppercase; letter-spacing:.08em; color:var(--accent-2)}

.tech-block{border:1px solid var(--border); border-radius:14px; background:var(--card); padding:16px; margin-bottom:14px}
.tech-block h5{margin:0 0 8px; font-size:16px; color:var(--accent-2)}
.tech-block .phrase{
  padding:8px 10px; background:var(--bg-soft); border:1px solid var(--border);
  border-radius:8px; margin:6px 0; font-size:14px;
}
.tech-block .phrase b{color:var(--accent-2)}
.tech-block .phrase em{color:var(--hindi); font-style:normal; display:block; font-size:12px; margin-top:2px}

.grid-2{display:grid; grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); gap:12px}

/* Code blocks */
pre.code{
  background:#0a0f24; border:1px solid var(--border); border-radius:10px;
  padding:14px 16px; overflow:auto; font-size:13px; line-height:1.6;
  color:#e6e9ff; font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
}
[data-theme="light"] pre.code{background:#0d1330; color:#e6e9ff}
code.inline{
  background:var(--tag); border:1px solid var(--border); border-radius:6px;
  padding:1px 6px; font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  font-size:13px;
}

/* Footer */
footer{
  margin-top:60px; padding-top:20px; border-top:1px solid var(--border);
  color:var(--muted); font-size:13px; text-align:center;
}
footer b{color:var(--text)}

/* Empty / coming-soon state */
.empty{padding:50px 30px; text-align:center; color:var(--muted); border:1px dashed var(--border); border-radius:14px; margin:20px 0}
.empty h4{margin:0 0 8px; font-size:18px; color:var(--text)}

/* Scrollbars */
::-webkit-scrollbar{width:10px;height:10px}
::-webkit-scrollbar-thumb{background:var(--border); border-radius:10px}
::-webkit-scrollbar-thumb:hover{background:var(--accent)}

/* Print */
@media print{
  .sidebar, .toolbar, .btn{display:none !important}
  .shell{grid-template-columns: 1fr}
  body{background:#fff; color:#000}
  .callout, .tech-block, .course-card, .hero{box-shadow:none; border-color:#ccc}
}