:root{
  --navy:#0f1f3d; --navy-2:#16294d; --coral:#ff5e4d; --ink:#12162a; --soft:#646b80;
  --bg:#fbfcfe; --card:#ffffff; --line:#e5e9f2; --ok:#0f8a5f; --warn:#b8860b; --radius:14px;
}
*{box-sizing:border-box}
body{margin:0;background:var(--bg);color:var(--ink);font:16px/1.5 -apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,"Noto Sans Tamil",sans-serif;-webkit-font-smoothing:antialiased}
header{position:sticky;top:0;z-index:20;background:var(--navy);color:#fff;padding:14px 16px;display:flex;align-items:center;gap:12px}
header h1{font-size:17px;margin:0;letter-spacing:.4px;font-weight:700;flex:1}
header .who{font-size:12px;opacity:.8}
button{font:inherit;cursor:pointer;border-radius:10px;border:0}
.btn{background:var(--coral);color:#fff;padding:13px 18px;font-weight:700;width:100%}
.btn.secondary{background:#eef1f7;color:var(--navy)}
.btn.link{background:none;color:#fff;padding:6px 8px;font-size:13px;text-decoration:underline;width:auto}
main{padding:14px 14px 92px;max-width:760px;margin:0 auto}
nav.tabs{position:fixed;bottom:0;left:0;right:0;background:#fff;border-top:1px solid var(--line);display:flex;z-index:30}
nav.tabs button{flex:1;background:none;padding:10px 4px 14px;color:var(--soft);font-size:11px;font-weight:600;display:flex;flex-direction:column;align-items:center;gap:3px}
nav.tabs button .ic{font-size:19px;line-height:1}
nav.tabs button[aria-selected="true"]{color:var(--coral)}
.search{display:flex;gap:8px;margin:6px 0 14px}
.search input{flex:1;padding:12px 14px;border:1px solid var(--line);border-radius:12px;background:#fff;font-size:15px}
.card{background:var(--card);border:1px solid var(--line);border-radius:var(--radius);padding:14px;margin-bottom:12px}
.card h3{margin:0 0 6px;font-size:16px;line-height:1.35}
.card p{margin:6px 0;color:#39405a;font-size:14px}
.meta{display:flex;flex-wrap:wrap;gap:6px;margin-top:10px}
.chip{background:#eef2fb;color:var(--navy);border-radius:999px;padding:5px 11px;font-size:12px;font-weight:600}
.chip.coral{background:#fff0ed;color:#c23a2b}
.chip.ok{background:#e8f7f0;color:var(--ok)}
.ref{font-weight:800;color:var(--coral);letter-spacing:.4px}
.featured-strip{background:linear-gradient(120deg,var(--navy),var(--navy-2));color:#fff;border-radius:var(--radius);padding:14px;margin-bottom:14px}
.featured-strip h2{margin:0 0 4px;font-size:15px;letter-spacing:.6px;text-transform:uppercase}
.featured-strip small{opacity:.75}
label{display:block;font-size:13px;font-weight:700;color:var(--navy);margin:12px 0 5px}
input,select,textarea{width:100%;padding:12px;border:1px solid var(--line);border-radius:10px;font:inherit;background:#fff}
textarea{min-height:120px;resize:vertical}
.note{font-size:12.5px;color:var(--soft);margin-top:8px}
.msg{padding:11px 13px;border-radius:10px;margin:10px 0;font-size:14px}
.msg.err{background:#fdecea;color:#b3261e}
.msg.ok{background:#e8f7f0;color:var(--ok)}
.kind{display:flex;gap:8px;margin-bottom:6px}
.kind button{flex:1;padding:12px;border:2px solid var(--line);background:#fff;font-weight:700;color:var(--soft)}
.kind button[aria-pressed="true"]{border-color:var(--coral);color:var(--coral);background:#fff6f4}
.empty{text-align:center;color:var(--soft);padding:40px 12px}
.login{max-width:420px;margin:6vh auto;padding:0 18px}
.login .brand{text-align:center;margin-bottom:22px}
.login .brand b{display:block;font-size:22px;color:var(--navy);letter-spacing:1px}
.login .brand span{color:var(--coral);font-size:13px}
a{color:var(--navy)}
@media (prefers-color-scheme: dark){
  :root{--bg:#0c1122;--card:#131a2e;--ink:#eef1f8;--line:#232c46;--soft:#97a0bb}
  input,select,textarea{background:#0f1729;color:#eef1f8}
  nav.tabs{background:#0f1729;border-color:#232c46}
  .chip{background:#1b2540;color:#c8d3f0}
}