/* ============================================================
   GHSS Alumni — theme inspired by the school's blue & yellow
   ============================================================ */
:root {
  --blue: #0e7fbf; --blue-dark: #085a8a; --blue-deep: #063f61;
  --yellow: #f7c928; --yellow-soft: #fdeeb2;
  --ink: #1b2733; --muted: #5b6b7a; --bg: #f4f8fb; --card: #ffffff;
  --ok: #1d9e5f; --warn: #c77700; --danger: #c0392b;
  --radius: 14px; --shadow: 0 4px 18px rgba(6, 63, 97, .10);
  font-size: 16px;
}
* { box-sizing: border-box; }
body { margin: 0; font-family: "Segoe UI", "Noto Sans Tamil", Roboto, system-ui, sans-serif;
  background: var(--bg); color: var(--ink); }
a { color: var(--blue-dark); text-decoration: none; }
img { max-width: 100%; }

/* ---------- Nav ---------- */
.navbar { display: flex; align-items: center; gap: 12px; flex-wrap: wrap;
  background: linear-gradient(90deg, var(--blue-deep), var(--blue)); color: #fff;
  padding: 10px 18px; position: sticky; top: 0; z-index: 50; box-shadow: var(--shadow); }
.brand { display: flex; align-items: center; gap: 10px; color: #fff; font-weight: 700; }
.brand-badge { background: var(--yellow); color: var(--blue-deep); font-weight: 800;
  padding: 6px 10px; border-radius: 10px; letter-spacing: 1px; }
.brand-text { max-width: 320px; font-size: .95rem; line-height: 1.15; }
.nav-links { display: flex; align-items: center; gap: 4px; flex-wrap: wrap; margin-left: auto; }
.nav-links a { color: #eaf4fb; padding: 8px 10px; border-radius: 8px; font-size: .95rem; }
.nav-links a:hover, .nav-links a.active { background: rgba(255,255,255,.16); color: #fff; }
.nav-links a.btn-nav { background: var(--yellow); color: var(--blue-deep); font-weight: 700; margin-left: 6px; }
.lang-toggle { background: transparent; border: 1.5px solid rgba(255,255,255,.6); color: #fff;
  border-radius: 8px; padding: 6px 10px; cursor: pointer; font-size: .9rem; }
.nav-burger { display: none; background: none; border: none; color: #fff; font-size: 1.5rem; cursor: pointer; }
@media (max-width: 900px) {
  .nav-burger { display: block; margin-left: auto; }
  .nav-links { display: none; width: 100%; flex-direction: column; align-items: stretch; }
  .nav-links.open { display: flex; }
  .brand-text { max-width: 220px; }
}

/* ---------- Layout ---------- */
.container { max-width: 1100px; margin: 0 auto; padding: 24px 18px 60px; }
.page-title { color: var(--blue-deep); margin: 8px 0 4px; }
.page-sub { color: var(--muted); margin: 0 0 22px; }
.card { background: var(--card); border-radius: var(--radius); box-shadow: var(--shadow); padding: 20px; }
.grid { display: grid; gap: 16px; }
.grid-2 { grid-template-columns: repeat(auto-fill, minmax(280px, 1fr)); }
.grid-3 { grid-template-columns: repeat(auto-fill, minmax(240px, 1fr)); }

/* ---------- Hero / collage ---------- */
.hero { background: linear-gradient(135deg, var(--blue-deep) 0%, var(--blue) 60%, #2a9fd8 100%);
  color: #fff; padding: 48px 18px 56px; }
.hero-inner { max-width: 1100px; margin: 0 auto; display: grid;
  grid-template-columns: 1.1fr 1fr; gap: 36px; align-items: center; }
.hero h1 { font-size: 2.1rem; margin: 0 0 10px; line-height: 1.25; }
.hero p.tagline { color: var(--yellow); font-weight: 600; font-size: 1.15rem; margin: 0 0 20px; }
.hero .btn { margin-right: 10px; }
.collage { display: grid; grid-template-columns: repeat(3, 1fr); gap: 10px; }
.collage .tile { aspect-ratio: 3/4; border-radius: 12px; overflow: hidden;
  box-shadow: 0 8px 20px rgba(0,0,0,.28); background: linear-gradient(160deg, var(--yellow), var(--blue));
  transform: rotate(var(--r, 0deg)); transition: transform .3s; position: relative; }
.collage .tile:hover { transform: rotate(0) scale(1.05); z-index: 2; }
.collage .tile img { width: 100%; height: 100%; object-fit: cover; display: block; }
.collage .tile:nth-child(1) { --r: -3deg; } .collage .tile:nth-child(2) { --r: 2deg; margin-top: 18px; }
.collage .tile:nth-child(3) { --r: -2deg; } .collage .tile:nth-child(4) { --r: 2.5deg; }
.collage .tile:nth-child(5) { --r: -1.5deg; margin-top: -14px; } .collage .tile:nth-child(6) { --r: 3deg; }
@media (max-width: 820px) { .hero-inner { grid-template-columns: 1fr; } .hero h1 { font-size: 1.6rem; } }

.stats-band { display: flex; gap: 16px; flex-wrap: wrap; justify-content: center;
  margin: -32px auto 0; max-width: 800px; position: relative; padding: 0 18px; }
.stat-card { background: #fff; border-radius: var(--radius); box-shadow: var(--shadow);
  padding: 18px 30px; text-align: center; flex: 1; min-width: 180px; }
.stat-card .num { font-size: 2rem; font-weight: 800; color: var(--blue-dark); }
.stat-card .lbl { color: var(--muted); font-size: .9rem; }

/* ---------- Forms ---------- */
label { display: block; font-weight: 600; margin: 14px 0 6px; font-size: .95rem; }
input, select, textarea { width: 100%; padding: 11px 12px; border: 1.5px solid #cfdce6;
  border-radius: 10px; font-size: 1rem; font-family: inherit; background: #fff; }
input:focus, select:focus, textarea:focus { outline: none; border-color: var(--blue); }
.row { display: flex; gap: 10px; } .row > * { flex: 1; }
.row .narrow { flex: 0 0 150px; }
.btn { display: inline-block; background: var(--blue); color: #fff; border: none; cursor: pointer;
  padding: 11px 22px; border-radius: 10px; font-size: 1rem; font-weight: 600; }
.btn:hover { background: var(--blue-dark); }
.btn.yellow { background: var(--yellow); color: var(--blue-deep); }
.btn.ghost { background: transparent; border: 1.5px solid var(--blue); color: var(--blue-dark); }
.btn.small { padding: 6px 12px; font-size: .85rem; border-radius: 8px; }
.btn.danger { background: var(--danger); }
.btn:disabled { opacity: .55; cursor: not-allowed; }
.checkbox-row { display: flex; align-items: center; gap: 8px; margin-top: 14px; }
.checkbox-row input { width: auto; }

/* ---------- Notices ---------- */
.notice { border-radius: var(--radius); padding: 18px; margin: 14px 0; background: #eef6fc;
  border-left: 5px solid var(--blue); }
.notice.warn { background: #fdf6e3; border-left-color: var(--warn); }
.notice.ok { background: #e9f9f0; border-left-color: var(--ok); }
.notice.error { background: #fdecea; border-left-color: var(--danger); }
.badge { display: inline-block; padding: 3px 10px; border-radius: 999px; font-size: .78rem; font-weight: 700; }
.badge.blue { background: #e1f0fa; color: var(--blue-dark); }
.badge.yellow { background: var(--yellow-soft); color: #8a6d00; }
.badge.green { background: #e2f6ec; color: var(--ok); }
.badge.red { background: #fdecea; color: var(--danger); }

/* ---------- Directory ---------- */
.filters { display: flex; gap: 10px; flex-wrap: wrap; margin-bottom: 18px; }
.filters input, .filters select { width: auto; flex: 1; min-width: 150px; }
.az { display: flex; flex-wrap: wrap; gap: 5px; margin-bottom: 18px; }
.az button { border: 1px solid #cfdce6; background: #fff; border-radius: 8px; padding: 5px 9px;
  cursor: pointer; font-weight: 600; color: var(--blue-dark); }
.az button.active, .az button:hover { background: var(--blue); color: #fff; border-color: var(--blue); }
.member-card { display: flex; gap: 14px; align-items: center; }
.avatar { border-radius: 50%; object-fit: cover; flex-shrink: 0; }
.avatar-initial { background: linear-gradient(135deg, var(--blue), var(--blue-deep)); color: #fff;
  display: flex; align-items: center; justify-content: center; font-weight: 700; }
.member-card h3 { margin: 0 0 2px; font-size: 1.05rem; }
.member-card .ta-name { color: var(--muted); font-size: .92rem; }
.member-card .meta { font-size: .85rem; color: var(--muted); margin-top: 4px; }

/* ---------- Gallery ---------- */
.event-card h3 { margin-top: 0; color: var(--blue-deep); }
.link-chips { display: flex; flex-wrap: wrap; gap: 8px; margin: 10px 0; }
.link-chips a { background: #e1f0fa; color: var(--blue-dark); padding: 7px 14px; border-radius: 999px;
  font-size: .9rem; font-weight: 600; }
.link-chips a:hover { background: var(--blue); color: #fff; }
.yt-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(260px, 1fr)); gap: 12px; margin-top: 10px; }
.yt-grid iframe { width: 100%; aspect-ratio: 16/9; border: 0; border-radius: 10px; }

/* ---------- Tables (admin) ---------- */
table { width: 100%; border-collapse: collapse; font-size: .92rem; }
th, td { text-align: left; padding: 9px 8px; border-bottom: 1px solid #e4ecf2; vertical-align: middle; }
th { color: var(--muted); font-size: .8rem; text-transform: uppercase; letter-spacing: .4px; }
.tabs { display: flex; gap: 6px; flex-wrap: wrap; margin-bottom: 18px; }
.tabs button { border: none; background: #e1eaf1; padding: 9px 16px; border-radius: 999px;
  cursor: pointer; font-weight: 600; color: var(--blue-deep); }
.tabs button.active { background: var(--blue); color: #fff; }
.hidden { display: none !important; }

/* ---------- Footer ---------- */
.site-footer { background: var(--blue-deep); color: #cfe6f5; text-align: center;
  padding: 22px 16px; margin-top: 40px; font-size: .9rem; }

/* ---------- Misc ---------- */
.section-title { color: var(--blue-deep); border-left: 5px solid var(--yellow);
  padding-left: 12px; margin: 34px 0 16px; }
.center { text-align: center; }
.mt { margin-top: 16px; } .mb { margin-bottom: 16px; }
.muted { color: var(--muted); }
#recaptcha-container { margin-top: 12px; }