/* =========================================================
   Uttarkashi Sabha — Techno Theme
   Dark minimal tech design system
   ========================================================= */

:root {
  /* Core palette */
  --bg: #05070d;
  --bg-alt: #080b14;
  --panel: #0b0f1a;
  --panel-2: #0e1320;
  --border: rgba(148, 179, 255, 0.14);
  --border-strong: rgba(148, 179, 255, 0.28);

  /* Accents */
  --accent: #22e6c1;          /* teal-cyan, nods to the original green */
  --accent-soft: rgba(34, 230, 193, 0.14);
  --accent-2: #7c5cff;        /* violet counter-accent */
  --accent-2-soft: rgba(124, 92, 255, 0.16);

  /* Text */
  --text: #eef2fb;
  --text-dim: #9aa5c0;
  --text-faint: #5c6786;

  /* Type */
  --font-display: "Hind", "Noto Sans Devanagari", system-ui, sans-serif;
  --font-body: "Hind", "Noto Sans Devanagari", system-ui, -apple-system, sans-serif;
  --font-mono: "JetBrains Mono", ui-monospace, SFMono-Regular, monospace;

  --radius: 14px;
  --radius-sm: 8px;
  --container: 1180px;

  --shadow-glow: 0 0 0 1px var(--border), 0 20px 60px -20px rgba(34, 230, 193, 0.15);
  --transition: 220ms cubic-bezier(.4,0,.2,1);
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

/* Background grid + glow layers */
.bg-grid {
  position: fixed;
  inset: 0;
  z-index: 0;
  pointer-events: none;
  background-image:
    linear-gradient(to right, rgba(148,179,255,0.05) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(148,179,255,0.05) 1px, transparent 1px);
  background-size: 56px 56px;
  mask-image: radial-gradient(ellipse 80% 60% at 50% 0%, black 40%, transparent 90%);
}

.bg-glow {
  position: fixed;
  z-index: 0;
  pointer-events: none;
  filter: blur(110px);
  opacity: 0.35;
  border-radius: 50%;
}
.bg-glow--a { top: -220px; left: -160px; width: 560px; height: 560px; background: var(--accent); }
.bg-glow--b { top: 30%; right: -220px; width: 620px; height: 620px; background: var(--accent-2); opacity: 0.22; }

h1, h2, h3, h4 {
  font-family: var(--font-display);
  font-weight: 600;
  line-height: 1.3;
  margin: 0 0 .5em;
  letter-spacing: normal;
}

p { margin: 0 0 1em; color: var(--text-dim); }

a { color: inherit; text-decoration: none; }

img, svg { max-width: 100%; display: block; }

.container {
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 24px;
  position: relative;
  z-index: 1;
}

section { position: relative; z-index: 1; padding: 100px 0; }
section + section { border-top: 1px solid var(--border); }

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-family: var(--font-mono);
  font-size: 12.5px;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 14px;
}
.eyebrow::before {
  content: "";
  width: 7px; height: 7px;
  border-radius: 50%;
  background: var(--accent);
  box-shadow: 0 0 12px 2px var(--accent);
}

.section-head { max-width: 640px; margin-bottom: 48px; }
.section-head h2 { font-size: clamp(26px, 3.4vw, 38px); color: #fff; }
.section-head p { font-size: 16.5px; }

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 13px 24px;
  border-radius: 10px;
  font-family: var(--font-body);
  font-weight: 600;
  font-size: 14.5px;
  cursor: pointer;
  border: 1px solid transparent;
  transition: transform var(--transition), border-color var(--transition), background var(--transition), box-shadow var(--transition);
  white-space: nowrap;
}
.btn:active { transform: translateY(1px); }

.btn-primary {
  background: linear-gradient(135deg, var(--accent), #17b89e);
  color: #04150f;
  box-shadow: 0 0 0 1px rgba(34,230,193,0.4), 0 14px 30px -10px rgba(34,230,193,0.5);
}
.btn-primary:hover { box-shadow: 0 0 0 1px rgba(34,230,193,0.6), 0 18px 36px -8px rgba(34,230,193,0.6); }

.btn-ghost {
  background: rgba(255,255,255,0.02);
  border-color: var(--border-strong);
  color: var(--text);
}
.btn-ghost:hover { border-color: var(--accent); background: var(--accent-soft); }

.btn-sm { padding: 9px 16px; font-size: 13px; }

/* ---------- Header / Nav ---------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(5, 7, 13, 0.72);
  backdrop-filter: blur(14px) saturate(140%);
  border-bottom: 1px solid var(--border);
}

.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 76px;
}

.brand { display: flex; align-items: center; gap: 12px; }
.brand-mark {
  width: 40px; height: 40px;
  border-radius: 50%;
  display: flex; align-items: center; justify-content: center;
  background: linear-gradient(135deg, var(--accent), var(--accent-2));
  color: #04070f;
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: 13px;
  box-shadow: 0 0 22px -4px var(--accent);
  object-fit: cover;
  border: 1px solid var(--border-strong);
}
.brand-text { display: flex; flex-direction: column; line-height: 1.1; }
.brand-text strong { font-family: var(--font-display); font-size: 15.5px; color: #fff; }
.brand-text span { font-family: var(--font-mono); font-size: 11px; color: var(--text-faint); }

.nav-links {
  display: flex;
  align-items: center;
  gap: 4px;
  list-style: none;
  margin: 0; padding: 0;
}
.nav-links a {
  display: inline-block;
  padding: 9px 14px;
  font-size: 14px;
  color: var(--text-dim);
  border-radius: 8px;
  transition: color var(--transition), background var(--transition);
}
.nav-links a:hover { color: var(--text); background: rgba(255,255,255,0.04); }

.nav-cta { display: flex; align-items: center; gap: 10px; }

.nav-toggle {
  display: none;
  width: 40px; height: 40px;
  border-radius: 9px;
  border: 1px solid var(--border-strong);
  background: transparent;
  color: var(--text);
  align-items: center; justify-content: center;
  cursor: pointer;
}

/* ---------- Hero ---------- */
.hero { padding: 88px 0 60px; }
.hero-grid {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 56px;
  align-items: center;
}
.hero h1 {
  font-size: clamp(38px, 6vw, 64px);
  color: #fff;
  margin-bottom: 20px;
}
.hero h1 .grad {
  background: linear-gradient(120deg, var(--accent), var(--accent-2));
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}
.hero-lead { font-size: 17.5px; max-width: 520px; margin-bottom: 34px; }

.hero-stats {
  display: flex;
  gap: 34px;
  margin-bottom: 38px;
  flex-wrap: wrap;
}
.stat-num {
  font-family: var(--font-mono);
  font-size: 30px;
  font-weight: 700;
  color: var(--accent);
}
.stat-label {
  font-size: 12.5px;
  color: var(--text-faint);
  text-transform: uppercase;
  letter-spacing: 0.08em;
}
.hero-actions { display: flex; gap: 14px; flex-wrap: wrap; }

.hero-visual {
  position: relative;
  aspect-ratio: 1 / 1;
  border-radius: 20px;
  border: 1px solid var(--border);
  background: radial-gradient(circle at 30% 20%, rgba(34,230,193,0.14), transparent 55%),
              linear-gradient(160deg, var(--panel), var(--bg-alt));
  overflow: hidden;
  display: flex;
  align-items: center;
  justify-content: center;
}
.hero-visual::before {
  content: "";
  position: absolute; inset: 0;
  background-image: linear-gradient(rgba(148,179,255,0.06) 1px, transparent 1px),
                     linear-gradient(90deg, rgba(148,179,255,0.06) 1px, transparent 1px);
  background-size: 30px 30px;
}

/* ---------- Cards / panels ---------- */
.panel {
  background: linear-gradient(180deg, var(--panel), var(--panel-2));
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 28px;
  transition: border-color var(--transition), transform var(--transition), box-shadow var(--transition);
}
.panel:hover { border-color: var(--border-strong); transform: translateY(-3px); box-shadow: var(--shadow-glow); }

.grid { display: grid; gap: 22px; }
.grid-2 { grid-template-columns: repeat(2, 1fr); }
.grid-3 { grid-template-columns: repeat(3, 1fr); }
.grid-4 { grid-template-columns: repeat(4, 1fr); }

/* About */
.about-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 48px; align-items: start; }
.about-badges { display: flex; gap: 12px; flex-wrap: wrap; margin-top: 22px; }
.badge {
  font-family: var(--font-mono);
  font-size: 12px;
  padding: 7px 12px;
  border-radius: 999px;
  border: 1px solid var(--border-strong);
  color: var(--text-dim);
}

/* Members directory */
.directory-tools {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr;
  gap: 14px;
  margin-bottom: 22px;
}
.field {
  display: flex;
  flex-direction: column;
  gap: 6px;
}
.field label {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--text-faint);
}
.field input, .field select, .field textarea {
  background: var(--bg-alt);
  border: 1px solid var(--border-strong);
  border-radius: var(--radius-sm);
  padding: 12px 14px;
  color: var(--text);
  font-family: var(--font-body);
  font-size: 14.5px;
  outline: none;
  transition: border-color var(--transition), box-shadow var(--transition);
}
.field input:focus, .field select:focus, .field textarea:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px var(--accent-soft);
}
.field select { appearance: none; cursor: pointer; }

.table-wrap {
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
}
table { width: 100%; border-collapse: collapse; }
thead th {
  text-align: left;
  font-family: var(--font-mono);
  font-size: 11.5px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--text-faint);
  background: var(--panel-2);
  padding: 14px 18px;
  border-bottom: 1px solid var(--border);
}
tbody td {
  padding: 14px 18px;
  font-size: 14.5px;
  color: var(--text-dim);
  border-bottom: 1px solid var(--border);
}
tbody tr:last-child td { border-bottom: none; }
tbody tr:hover { background: rgba(255,255,255,0.02); }
tbody td:first-child { color: var(--text); font-weight: 500; }

.directory-meta {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 18px;
  flex-wrap: wrap;
  gap: 10px;
}
.count-chip {
  font-family: var(--font-mono);
  font-size: 12.5px;
  color: var(--accent);
  background: var(--accent-soft);
  border: 1px solid rgba(34,230,193,0.3);
  padding: 6px 12px;
  border-radius: 999px;
}
.empty-state {
  text-align: center;
  padding: 40px 20px;
  color: var(--text-faint);
  font-family: var(--font-mono);
  font-size: 13.5px;
}

/* Announcements */
.tag {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--accent-2);
  background: var(--accent-2-soft);
  padding: 5px 10px;
  border-radius: 6px;
  margin-bottom: 14px;
}
.panel h3 { font-size: 18.5px; color: #fff; }

/* Events */
.event-row {
  display: grid;
  grid-template-columns: 140px 1fr;
  gap: 22px;
  padding: 26px 0;
  border-bottom: 1px solid var(--border);
}
.event-row:last-child { border-bottom: none; }
.event-date {
  font-family: var(--font-mono);
  color: var(--accent);
  font-size: 14px;
}
.event-date span { display: block; color: var(--text-faint); font-size: 11.5px; margin-top: 2px; }
.event-row h3 { font-size: 18px; color: #fff; margin-bottom: 6px; }

/* Our Work */
.work-num {
  font-family: var(--font-mono);
  font-size: 13px;
  color: var(--accent);
  border: 1px solid var(--border-strong);
  width: 34px; height: 34px;
  border-radius: 9px;
  display: flex; align-items: center; justify-content: center;
  margin-bottom: 18px;
}

/* Membership form */
.membership-panel { padding: 40px; }
.form-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 18px; }
.form-grid .full { grid-column: 1 / -1; }
.form-note { font-size: 13px; color: var(--text-faint); margin-top: 14px; }

/* Contact / office bearers */
.bearer-card { text-align: center; }
.bearer-avatar {
  width: 96px; height: 96px;
  border-radius: 50%;
  margin: 0 auto 16px;
  background: linear-gradient(135deg, var(--accent-2), var(--accent));
  display: flex; align-items: center; justify-content: center;
  font-family: var(--font-mono);
  font-weight: 700;
  color: #04070f;
  overflow: hidden;
  border: 1px solid var(--border-strong);
  box-shadow: 0 0 0 4px var(--panel-2), 0 0 26px -6px var(--accent);
}
.bearer-avatar img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center top;
}
.bearer-card h3 { font-size: 16px; color: #fff; margin-bottom: 4px; }
.bearer-role { font-family: var(--font-mono); font-size: 11.5px; color: var(--accent); text-transform: uppercase; letter-spacing: 0.08em; margin-bottom: 10px; }

/* Footer */
.site-footer {
  border-top: 1px solid var(--border);
  padding: 40px 0;
}
.footer-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 14px;
}
.footer-row p { margin: 0; font-size: 13.5px; color: var(--text-faint); }
.footer-links { display: flex; gap: 18px; }
.footer-links a { font-size: 13.5px; color: var(--text-dim); }
.footer-links a:hover { color: var(--accent); }

/* Reveal animation */
.reveal { transition: opacity .6s ease, transform .6s ease; }
.reveal.pre-reveal { opacity: 0; transform: translateY(18px); }
.reveal.pre-reveal.is-visible { opacity: 1; transform: translateY(0); }

/* Toast (form submit confirmation) */
.toast {
  position: fixed;
  bottom: 24px;
  right: 24px;
  z-index: 100;
  background: var(--panel);
  border: 1px solid var(--accent);
  color: var(--text);
  padding: 14px 20px;
  border-radius: 10px;
  font-size: 14px;
  box-shadow: 0 20px 40px -10px rgba(0,0,0,0.6);
  transform: translateY(20px);
  opacity: 0;
  pointer-events: none;
  transition: transform .3s ease, opacity .3s ease;
}
.toast.show { transform: translateY(0); opacity: 1; }

/* Simple page (Know Uttarkashi) */
.page-hero { padding: 70px 0 20px; }
.page-hero h1 { font-size: clamp(32px, 5vw, 48px); color: #fff; }
.content-block { max-width: 760px; }
.content-block h2 { color: #fff; font-size: 24px; margin-top: 40px; }
.content-block ul { color: var(--text-dim); padding-left: 20px; }
.content-block li { margin-bottom: 8px; }

/* ---------- Responsive ---------- */
@media (max-width: 980px) {
  .hero-grid { grid-template-columns: 1fr; }
  .about-grid { grid-template-columns: 1fr; }
  .grid-2, .grid-3, .grid-4 { grid-template-columns: 1fr 1fr; }
  .directory-tools { grid-template-columns: 1fr; }
  .form-grid { grid-template-columns: 1fr; }
  .nav-links { display: none; }
  .nav-toggle { display: flex; }
  .nav-cta .btn-ghost { display: none; }
}

@media (max-width: 640px) {
  section { padding: 64px 0; }
  .grid-2, .grid-3, .grid-4 { grid-template-columns: 1fr; }
  .event-row { grid-template-columns: 1fr; }
  .hero-stats { gap: 22px; }
  .membership-panel { padding: 24px; }
  table { font-size: 13px; }
}

/* Mobile nav drawer */
.nav-drawer {
  position: fixed;
  inset: 76px 0 0 0;
  background: rgba(5,7,13,0.98);
  backdrop-filter: blur(10px);
  z-index: 49;
  display: none;
  flex-direction: column;
  padding: 24px;
  gap: 4px;
}
.nav-drawer.open { display: flex; }
.nav-drawer a {
  padding: 16px;
  font-size: 16px;
  border-bottom: 1px solid var(--border);
  color: var(--text-dim);
}

/* ---------- Photo gallery ---------- */
.gallery-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 14px;
}
.gallery-item {
  position: relative;
  aspect-ratio: 4 / 3;
  border-radius: 10px;
  overflow: hidden;
  border: 1px solid var(--border);
  background: var(--panel);
  cursor: pointer;
}
.gallery-item img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
  transition: transform 400ms ease;
}
.gallery-item:hover img { transform: scale(1.06); }
.gallery-item::after {
  content: "";
  position: absolute; inset: 0;
  background: linear-gradient(180deg, transparent 60%, rgba(0,0,0,0.55));
  opacity: 0;
  transition: opacity var(--transition);
}
.gallery-item:hover::after { opacity: 1; }
.gallery-item .gallery-num {
  position: absolute;
  bottom: 8px;
  left: 10px;
  font-family: var(--font-mono);
  font-size: 11px;
  color: #fff;
  opacity: 0;
  transition: opacity var(--transition);
  z-index: 1;
}
.gallery-item:hover .gallery-num { opacity: 1; }

.gallery-item .img-fallback {
  position: absolute; inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-direction: column;
  gap: 6px;
  background: var(--panel-2);
  color: var(--text-faint);
  font-family: var(--font-mono);
  font-size: 11px;
  text-align: center;
  padding: 10px;
}
.gallery-item img[data-broken="true"] { display: none; }
.gallery-item .img-fallback { display: none; }
.gallery-item img[data-broken="true"] ~ .img-fallback { display: flex; }

.lightbox {
  position: fixed;
  inset: 0;
  z-index: 200;
  background: rgba(5, 7, 13, 0.94);
  display: none;
  align-items: center;
  justify-content: center;
  padding: 40px;
}
.lightbox.open { display: flex; }
.lightbox img {
  max-width: 100%;
  max-height: 82vh;
  border-radius: 10px;
  border: 1px solid var(--border-strong);
}
.lightbox-close, .lightbox-prev, .lightbox-next {
  position: absolute;
  background: rgba(11, 15, 26, 0.8);
  border: 1px solid var(--border-strong);
  color: var(--text);
  border-radius: 999px;
  width: 42px; height: 42px;
  display: flex; align-items: center; justify-content: center;
  cursor: pointer;
  font-size: 18px;
}
.lightbox-close { top: 24px; right: 24px; }
.lightbox-prev { left: 24px; top: 50%; transform: translateY(-50%); }
.lightbox-next { right: 24px; top: 50%; transform: translateY(-50%); }
.lightbox-close:hover, .lightbox-prev:hover, .lightbox-next:hover { border-color: var(--accent); color: var(--accent); }
.lightbox-caption {
  position: absolute;
  bottom: 28px;
  left: 0; right: 0;
  text-align: center;
  font-family: var(--font-mono);
  font-size: 12.5px;
  color: var(--text-dim);
}

@media (max-width: 980px) {
  .gallery-grid { grid-template-columns: repeat(3, 1fr); }
}
@media (max-width: 640px) {
  .gallery-grid { grid-template-columns: repeat(2, 1fr); }
  .lightbox { padding: 16px; }
  .lightbox-prev, .lightbox-next { width: 36px; height: 36px; }
}

/* Homepage gallery teaser */
.gallery-teaser {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 48px;
  align-items: center;
}
.gallery-teaser-img {
  border-radius: var(--radius);
  overflow: hidden;
  border: 1px solid var(--border);
  aspect-ratio: 3 / 2;
}
.gallery-teaser-img img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}
@media (max-width: 980px) {
  .gallery-teaser { grid-template-columns: 1fr; }
}

/* ---------- 3D mountain hero ---------- */
.hero {
  position: relative;
  min-height: 88vh;
  display: flex;
  align-items: center;
  overflow: hidden;
  padding: 130px 0 70px;
}
.hero-3d-canvas {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  display: block;
  z-index: 0;
}
.hero-overlay {
  position: absolute;
  inset: 0;
  z-index: 1;
  pointer-events: none;
  background:
    linear-gradient(180deg, rgba(5,7,13,0.1) 0%, rgba(5,7,13,0.35) 55%, var(--bg) 96%),
    linear-gradient(90deg, rgba(5,7,13,0.75) 0%, rgba(5,7,13,0.15) 55%, rgba(5,7,13,0.05) 100%);
}
.hero-content {
  position: relative;
  z-index: 2;
  max-width: 620px;
}
.hero-ridge {
  position: absolute;
  left: 0;
  right: 0;
  bottom: -1px;
  z-index: 2;
  line-height: 0;
  pointer-events: none;
}
.hero-ridge svg {
  width: 100%;
  height: 70px;
  display: block;
}

@media (max-width: 640px) {
  .hero { min-height: 78vh; padding: 110px 0 50px; }
  .hero-content { max-width: 100%; }
}