/* O/L ICT — theme-aware styles (uses platform CSS variables). Tamil-medium. */

.ict-crumb { color:var(--ink-dim); font-size:.85rem; max-width:860px; margin:0 auto 14px; padding:0 16px; }
.ict-crumb a { color:var(--ink-dim); text-decoration:none; }
.ict-crumb a:hover { color:var(--accent); }

.ict { max-width:860px; margin:0 auto; padding:0 16px; font-family:"Noto Sans Tamil","Inter",system-ui,sans-serif; }
.ict-head { border-bottom:1px solid rgba(255,255,255,.1); padding-bottom:16px; margin-bottom:22px; }
.ict-sec { font-size:.78rem; letter-spacing:.5px; text-transform:uppercase; color:var(--accent); font-weight:700; }
.ict-head h1 { margin:4px 0 2px; font-size:1.55rem; line-height:1.35; }
.ict-author { color:var(--ink-dim); font-size:.95rem; font-style:italic; }
.ict-weight { margin-top:10px; display:flex; align-items:center; gap:8px; flex-wrap:wrap; }
.ict-stars { color:#f6c544; letter-spacing:2px; font-size:.95rem; }
.ict-tag { background:rgba(124,108,255,.14); color:var(--accent); font-size:.68rem; font-weight:700;
  padding:2px 8px; border-radius:6px; letter-spacing:.3px; }

.ict-block { margin:24px 0; }
.ict-block h2 { font-size:1.18rem; margin:0 0 10px; padding-bottom:4px; border-bottom:2px solid rgba(124,108,255,.25); line-height:1.4; }
.ict-dim { color:var(--ink-dim); font-size:.9rem; }

/* Tamil prose body */
.ict-prose { line-height:1.85; }
.ict-prose p { margin:0 0 12px; }
.ict-prose ul, .ict-prose ol { margin:6px 0 14px; padding-left:22px; line-height:1.8; }
.ict-prose li { margin-bottom:6px; }
.ict-prose b, .ict-prose strong { color:var(--ink); }
.ict-prose .en { color:var(--ink-dim); font-style:italic; }

/* Definition table — term | meaning */
.ict-tbl { width:100%; border-collapse:collapse; margin:10px 0 16px; font-size:.95rem; line-height:1.7; }
.ict-tbl th, .ict-tbl td { text-align:left; padding:9px 10px; border-bottom:1px solid rgba(255,255,255,.08); vertical-align:top; }
.ict-tbl th { color:var(--accent); font-weight:700; width:32%; }

/* Callouts */
.ict-callout { border-radius:8px; padding:14px 16px; margin:16px 0; border-left:4px solid; line-height:1.75; }
.ict-callout .lbl { font-weight:800; font-size:.82rem; letter-spacing:.4px; text-transform:uppercase; margin-bottom:6px; display:block; }
.ict-callout.facts   { background:rgba(246,197,68,.10);  border-color:#f6c544; }
.ict-callout.facts .lbl   { color:#f6c544; }
.ict-callout.mistake { background:rgba(255,99,99,.09);   border-color:#ff6363; }
.ict-callout.mistake .lbl { color:#ff6363; }
.ict-callout.tip     { background:rgba(124,108,255,.10); border-color:var(--accent); }
.ict-callout.tip .lbl     { color:var(--accent); }
.ict-callout ul { margin:4px 0 0; padding-left:20px; line-height:1.8; }

/* Code / formula / monospace boxes */
.ict-code { background:#0d1117; border:1px solid rgba(255,255,255,.08); border-radius:8px;
  padding:12px 14px; margin:10px 0; font-family:"Fira Code","Consolas",monospace; font-size:.9rem;
  white-space:pre-wrap; overflow-x:auto; color:#c9d1d9; line-height:1.55; }
.ict-code .kw { color:#ff7b72; }
.ict-code .str { color:#a5d6ff; }
.ict-code .com { color:#8b949e; font-style:italic; }
code.ict-inline { background:rgba(124,108,255,.12); border-radius:4px; padding:1px 6px;
  font-family:"Fira Code","Consolas",monospace; font-size:.88em; color:var(--accent); }

/* Diagram wrapper (for SVG truth tables, gates, flowcharts) */
.ict-fig { background:#fff; border-radius:8px; padding:14px; margin:14px 0;
  text-align:center; }
.ict-fig svg { max-width:100%; height:auto; }
.ict-fig figcaption { color:var(--ink-dim); font-size:.85rem; margin-top:6px; }

/* Past-paper Q&A */
.ict-pqset { background:var(--card); border-radius:10px; padding:18px 20px; margin:14px 0; border:1px solid rgba(255,255,255,.1); }
.ict-pq-extract { background:rgba(124,108,255,.07); border-left:4px solid var(--accent); border-radius:6px;
  padding:12px 14px; margin-bottom:10px; line-height:1.75; }
.ict-pq-source { color:var(--ink-dim); font-size:.78rem; margin-bottom:8px; font-style:italic; }
.ict-pq-list { list-style:none; padding:0; margin:0; }
.ict-pq-item { padding:10px 0; border-top:1px dashed rgba(255,255,255,.08); }
.ict-pq-item:first-child { border-top:none; }
.ict-pq-q { line-height:1.7; }
.ict-pq-marks { color:var(--ink-dim); font-size:.82rem; margin-left:6px; }
.ict-pq-reveal { background:transparent; border:1px solid var(--accent); color:var(--accent);
  border-radius:6px; padding:4px 10px; margin-top:6px; cursor:pointer; font-size:.82rem; }
.ict-pq-reveal:hover { background:rgba(124,108,255,.10); }
.ict-pq-answer { background:rgba(80,200,120,.07); border-left:3px solid #50c878; border-radius:6px;
  padding:10px 12px; margin-top:8px; line-height:1.75; font-size:.95rem; }

/* Action row at end of lesson */
.ict-actions { display:flex; gap:10px; flex-wrap:wrap; margin:28px 0 14px; justify-content:center; }
.ict-btn { display:inline-block; background:var(--accent); color:#fff; padding:9px 16px;
  border-radius:8px; text-decoration:none; font-weight:600; font-size:.92rem; border:0; cursor:pointer; }
.ict-btn.ghost { background:transparent; border:1px solid var(--accent); color:var(--accent); }
.ict-btn:hover { filter:brightness(1.1); }

/* TOC grid on subject home + lessons index */
.ict-toc { max-width:920px; margin:0 auto; padding:0 16px; }
.ict-toc-grid { display:grid; grid-template-columns:repeat(auto-fill,minmax(260px,1fr)); gap:14px; }
.ict-item { display:block; background:var(--card); border:1px solid rgba(255,255,255,.08); border-radius:10px;
  padding:14px 16px; text-decoration:none; color:var(--ink); transition:border .15s,transform .15s; }
.ict-item:hover { border-color:var(--accent); transform:translateY(-2px); }
.ict-item.live .t { color:var(--ink); }
.ict-item.soon { opacity:.55; }
.ict-item .t { font-weight:700; font-size:1rem; margin-bottom:4px; line-height:1.35; }
.ict-item .a { color:var(--ink-dim); font-size:.85rem; line-height:1.55; }
.ict-item .meta { margin-top:8px; display:flex; align-items:center; gap:8px; flex-wrap:wrap; }
.ict-item .meta .unit { color:var(--ink-dim); font-size:.74rem; }
.ict-item .meta .ystars { color:#f6c544; font-size:.78rem; letter-spacing:1px; }
.ict-item .meta .pill { background:rgba(124,108,255,.14); color:var(--accent); font-size:.66rem; font-weight:700;
  padding:1px 7px; border-radius:5px; text-transform:uppercase; }
.ict-item .meta .pill.live { background:rgba(80,200,120,.16); color:#7ee2a0; }
.ict-item .meta .pill.soon { background:rgba(255,255,255,.08); color:var(--ink-dim); }

/* Section header (within lessons listing) */
.ict-sec-head { margin:28px 0 10px; padding:0 4px; display:flex; align-items:baseline; gap:10px; }
.ict-sec-head h2 { margin:0; font-size:1.25rem; }
.ict-sec-head .count { color:var(--ink-dim); font-size:.85rem; }