:root{
  --bg:#f7f1e6; --surface:#fffaf2; --surface2:#f1e8d6; --text:#2c2620; --muted:#7c7163;
  --line:#e6dcc9; --accent:#c2611d; --accent2:#9a7b1f; --chip:#efe6d4; --chiptext:#5e5345;
  --shadow:0 6px 22px rgba(80,55,20,.10);
}
:root[data-theme="dark"]{
  --bg:#17130e; --surface:#211b14; --surface2:#2a2218; --text:#f0e7d8; --muted:#a99a85;
  --line:#34291d; --accent:#e3923f; --accent2:#cda85a; --chip:#2c2419; --chiptext:#cdbfa6;
  --shadow:0 8px 28px rgba(0,0,0,.45);
}
*{box-sizing:border-box}
body{margin:0;background:var(--bg);color:var(--text);font-family:Inter,system-ui,-apple-system,sans-serif;line-height:1.5;-webkit-font-smoothing:antialiased}
.tamil{font-family:"Noto Serif Tamil",serif}
.tamil-body{font-family:"Noto Sans Tamil",sans-serif}
a{color:inherit;text-decoration:none}
button{font-family:inherit}

header{position:sticky;top:0;z-index:20;background:color-mix(in srgb,var(--bg) 88%,transparent);backdrop-filter:blur(10px);border-bottom:1px solid var(--line)}
.bar{max-width:1180px;margin:0 auto;padding:15px 22px;display:flex;align-items:center;gap:14px}
.brand{font-family:Fraunces,"Noto Serif Tamil",Georgia,serif;font-weight:600;font-size:20px;letter-spacing:.01em;cursor:pointer}
.brand:hover{color:var(--accent)}
.spacer{flex:1}
.iconbtn{width:40px;height:40px;border:1px solid var(--line);background:var(--surface);border-radius:50%;color:var(--text);cursor:pointer;display:grid;place-items:center;font-size:17px;transition:.15s}
.iconbtn:hover{border-color:var(--accent);color:var(--accent)}

.wrap{max-width:1180px;margin:0 auto;padding:22px 22px 70px}
.hero{font-family:Fraunces,"Noto Serif Tamil",Georgia,serif;font-size:26px;font-weight:500;margin:4px 0 0}
.hero small{display:block;font-family:Inter,sans-serif;font-size:13.5px;font-weight:400;color:var(--muted);margin-top:5px}

.segrow{display:flex;align-items:center;gap:12px;margin:20px 0 10px}
.seg{display:inline-flex;background:var(--surface2);border:1px solid var(--line);border-radius:30px;padding:4px;min-width:0}
.seg button{border:0;background:transparent;color:var(--muted);padding:9px 18px;border-radius:24px;cursor:pointer;font-size:14.5px;font-weight:500;min-height:40px;white-space:nowrap}
.seg button.active{background:var(--surface);color:var(--accent);box-shadow:var(--shadow)}
.viewtoggle{display:flex;border:1px solid var(--line);border-radius:24px;overflow:hidden;background:var(--surface);flex:none}
.viewtoggle button{border:0;background:transparent;color:var(--muted);padding:10px 13px;cursor:pointer;font-size:15px;min-height:40px}
.viewtoggle button.active{background:var(--accent);color:#fff}

.controls{display:flex;align-items:center;gap:12px;margin:0 0 6px;flex-wrap:wrap}
.searchwrap{flex:1;min-width:200px;display:flex;align-items:center;gap:10px;background:var(--surface);border:1px solid var(--line);border-radius:30px;padding:11px 18px;box-shadow:var(--shadow)}
.searchwrap input{flex:1;border:0;background:transparent;color:var(--text);font-size:15px;outline:none}
.searchwrap .ic{color:var(--muted)}
.sort{border:1px solid var(--line);background:var(--surface);color:var(--text);border-radius:24px;padding:11px 14px;font-size:14px;cursor:pointer}
/* search-operator help: ? button in the search box + tappable example popover */
.searchwrap .helpbtn{flex:none;width:26px;height:26px;border-radius:50%;border:1px solid var(--line);background:var(--surface2);color:var(--muted);font-size:14px;font-weight:700;cursor:pointer;display:grid;place-items:center;line-height:1;transition:.15s}
.searchwrap .helpbtn:hover,.searchwrap .helpbtn[aria-expanded="true"]{border-color:var(--accent);color:var(--accent)}
.helppop{background:var(--surface);border:1px solid var(--line);border-radius:16px;box-shadow:var(--shadow);padding:14px 16px;margin:0 0 14px;max-width:580px}
.helph{display:flex;align-items:center;justify-content:space-between;font-weight:600;font-size:14.5px;color:var(--text)}
.helpx{border:0;background:transparent;color:var(--muted);font-size:15px;cursor:pointer;padding:2px 6px;border-radius:8px}
.helpx:hover{color:var(--accent)}
.helpnote{font-size:12.5px;color:var(--muted);margin:6px 0 10px}
.helplist{list-style:none;margin:0;padding:0;display:flex;flex-direction:column;gap:8px}
.helplist li{display:flex;align-items:center;gap:10px;flex-wrap:wrap}
.exq{font-family:ui-monospace,"SF Mono",Menlo,Consolas,monospace;border:1px solid var(--line);background:var(--surface2);color:var(--accent);border-radius:10px;padding:6px 10px;font-size:13px;cursor:pointer;white-space:nowrap;transition:.15s}
.exq:hover{border-color:var(--accent);background:color-mix(in srgb,var(--accent) 12%,var(--surface))}
.helplist li span{font-size:12.5px;color:var(--muted)}
.helpkey{font-size:12px;color:var(--muted);margin:12px 0 0;border-top:1px solid var(--line);padding-top:10px;line-height:1.8}
.helpkey b{color:var(--accent);font-family:ui-monospace,"SF Mono",monospace}

.section-h{font-family:Fraunces,"Noto Serif Tamil",Georgia,serif;font-size:16px;font-weight:600;margin:22px 0 12px;display:flex;align-items:center;gap:10px;color:var(--muted)}
.section-h::after{content:"";flex:1;height:1px;background:var(--line)}
.clearf{font-family:Inter,sans-serif;border:1px solid var(--line);background:var(--surface);color:var(--accent);border-radius:20px;padding:4px 11px;font-size:12.5px;cursor:pointer}

#deck.grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(230px,1fr));gap:20px}
.card{background:var(--surface);border:1px solid var(--line);border-radius:18px;overflow:hidden;transition:.18s;display:block;cursor:pointer}
.card:hover{transform:translateY(-3px);box-shadow:var(--shadow);border-color:color-mix(in srgb,var(--accent) 40%,var(--line))}
.card .thumb{position:relative;aspect-ratio:16/9;background:var(--surface2)}
.card .thumb img{width:100%;height:100%;object-fit:cover;display:block}
.card .badge{position:absolute;right:9px;bottom:9px;background:rgba(20,12,4,.82);color:#fff;font-size:12px;padding:2px 8px;border-radius:6px}
.card .sessions{position:absolute;left:9px;top:9px;background:var(--accent);color:#fff;font-size:11.5px;padding:2px 9px;border-radius:20px;font-weight:500}
.card .body{padding:13px 16px 16px}
.card .en{font-family:Fraunces,"Noto Serif Tamil",Georgia,serif;font-size:17px;font-weight:600;margin:0;line-height:1.3}
.card .ta{font-family:"Noto Serif Tamil",serif;font-size:13.5px;color:var(--accent);margin:2px 0 0}
.meta{display:flex;align-items:center;gap:9px;flex-wrap:wrap;margin-top:8px}
.meta .count{font-size:12.5px;color:var(--muted)}
.tag{background:var(--chip);color:var(--chiptext);border-radius:20px;padding:3px 11px;font-size:11.5px}
.tag.asana{background:color-mix(in srgb,var(--accent) 18%,var(--surface));color:var(--accent)}

#deck.list{display:flex;flex-direction:column;gap:2px}
#deck.list .card{display:flex;align-items:stretch;gap:14px;border:0;border-bottom:1px solid var(--line);border-radius:0;padding:10px 6px;background:transparent;overflow:visible}
#deck.list .card:hover{transform:none;box-shadow:none;background:var(--surface);border-radius:12px}
#deck.list .thumb{width:128px;flex:none;aspect-ratio:auto;border-radius:12px;overflow:hidden}
#deck.list .sessions{font-size:10px;padding:1px 7px;left:6px;top:6px}
#deck.list .badge{font-size:10px;right:6px;bottom:6px}
#deck.list .body{flex:1;min-width:0;padding:0;display:flex;flex-direction:column;justify-content:center;gap:2px}
#deck.list .en{font-size:16px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
#deck.list .ta{margin:0;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
#deck.list .meta{margin-top:4px}

/* search results */
#deck.results{display:flex;flex-direction:column;gap:2px}
.res{display:flex;gap:14px;align-items:center;padding:10px 6px;border-bottom:1px solid var(--line);cursor:pointer}
.res:hover{background:var(--surface);border-radius:12px}
.rthumb{width:104px;aspect-ratio:16/9;object-fit:cover;border-radius:10px;flex:none}
.rbody{flex:1;min-width:0}
.rtop{display:flex;align-items:baseline;gap:10px}
.rtitle{font-family:Fraunces,"Noto Serif Tamil",Georgia,serif;font-weight:600;font-size:15.5px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.rtime{color:var(--accent2);font-size:13px;font-variant-numeric:tabular-nums;flex:none}
.rsnip{color:var(--muted);font-size:13.5px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;margin-top:3px}
.hl{background:color-mix(in srgb,var(--accent) 30%,transparent);color:var(--text);border-radius:3px;padding:0 2px;font-weight:500}
.empty{color:var(--muted);padding:28px 6px;font-size:14px}

/* video page */
.vwrap{max-width:1180px;margin:0 auto;padding:18px 22px 70px}
.back{display:inline-flex;align-items:center;gap:6px;color:var(--muted);font-size:14px;margin-bottom:14px}
.back:hover{color:var(--accent)}
.vlayout{display:grid;grid-template-columns:minmax(0,1fr) 380px;gap:26px}
@media(max-width:920px){.vlayout{grid-template-columns:1fr}}
.player{position:relative;aspect-ratio:16/9;border-radius:16px;overflow:hidden;background:#000;box-shadow:var(--shadow)}
.player>#watch{position:absolute;inset:0}
.player #ytplayer,.player iframe{width:100%;height:100%;border:0;display:block}
.listen{display:none;background:var(--surface);border:1px solid var(--line);border-radius:16px;padding:20px;align-items:center;gap:18px;flex-wrap:wrap}
.listen img{width:92px;height:92px;border-radius:12px;object-fit:cover}
.listen audio{flex:1;min-width:200px}
.listen .offnote{flex-basis:100%;color:var(--accent);font-size:13px}
.modes{display:inline-flex;background:var(--surface2);border:1px solid var(--line);border-radius:30px;padding:4px;margin:14px 0 4px}
.modes button{border:0;background:transparent;color:var(--muted);padding:8px 18px;border-radius:24px;cursor:pointer;font-size:14px;font-weight:500}
.modes button.active{background:var(--surface);color:var(--accent);box-shadow:var(--shadow)}
h1.vtitle{font-family:Fraunces,"Noto Serif Tamil",Georgia,serif;font-size:26px;font-weight:600;margin:12px 0 2px;line-height:1.2}
h1.vtitle .ta{font-family:"Noto Serif Tamil",serif;font-size:18px;color:var(--accent);font-weight:500}
.vmeta{color:var(--muted);font-size:13.5px;margin-top:4px}
.chapters{margin-top:18px;display:flex;flex-direction:column;gap:8px}
.chapters .ch{display:flex;gap:12px;align-items:flex-start;background:var(--surface);border:1px solid var(--line);border-radius:12px;padding:11px 14px;cursor:pointer;text-align:left;width:100%;color:var(--text)}
.chapters .ch:hover{border-color:var(--accent)}
.chapters .ct{color:var(--accent2);font-variant-numeric:tabular-nums;font-size:13px;flex:none;padding-top:1px}
.chapters .cl{font-size:14.5px}
.vinfo{margin-top:18px}
.vsum{color:var(--text);font-size:14.5px;margin:0 0 14px}
.tagrow{display:flex;flex-wrap:wrap;align-items:center;gap:7px;margin-top:9px}
.tlabel{font-size:11px;text-transform:uppercase;letter-spacing:.05em;color:var(--muted);margin-right:2px}
.tx{background:var(--surface);border:1px solid var(--line);border-radius:16px;overflow:hidden;display:flex;flex-direction:column;max-height:80vh}
.tabs{display:flex;border-bottom:1px solid var(--line)}
.tabs button{flex:1;padding:12px;border:0;background:transparent;color:var(--muted);cursor:pointer;font-size:14px;border-bottom:2px solid transparent}
.tabs button.active{color:var(--accent);border-bottom-color:var(--accent)}
.rows{overflow:auto;padding:6px}
.row{display:grid;grid-template-columns:48px 1fr;gap:10px;padding:9px 10px;border-radius:10px;cursor:pointer;width:100%;border:0;background:transparent;color:inherit;text-align:left}
.row:hover{background:var(--surface2)}
.row.active{background:color-mix(in srgb,var(--accent) 14%,var(--surface))}
.row .t{color:var(--accent2);font-variant-numeric:tabular-nums;font-size:12.5px;padding-top:2px}
.row .txt{font-size:14.5px}
.row.ta .txt{font-family:"Noto Sans Tamil",sans-serif;font-size:15px}
.row.active .txt{color:var(--accent)}

footer{text-align:center;color:var(--muted);font-size:13px;padding:30px}
@media(max-width:680px){
  .hero{font-size:22px}
  .segrow{flex-wrap:nowrap;gap:8px}
  .seg{flex-shrink:1;min-width:0}
  .seg button{padding:9px 11px;font-size:13px}
  .viewtoggle button{padding:9px 11px}
  #deck.grid{grid-template-columns:repeat(auto-fill,minmax(150px,1fr));gap:14px}
  .card .en{font-size:15px}
  #deck.list .thumb{width:104px}
  #deck.list .en{font-size:15px}
  .res{gap:10px}.rthumb{width:84px}
}