/* ============================================================
   base.css — Shared styles for all Quantum Club pages
   Symbiosis Quantum Club · SIT Pune · 2026
   ============================================================ */

/* ── Google Fonts are loaded per-page in <head> ── */

/* ── CSS Variables ── */
:root {
  --white:   #ffffff;
  --black:   #0a0a0a;
  --red:     #0a0a0a;
  --muted:   #555555;
  --border:  #0a0a0a;
  --bg:      #ffffff;
  --bg-off:  #ffffff;
  --mono:    'JetBrains Mono', monospace;
  --sans:    'Inter', sans-serif;
  --display: 'Outfit', sans-serif;
}

* {
  border-radius: 0 !important;
}

/* ── Reset ── */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
  font-size: 16px;
}

body {
  font-family: var(--sans);
  background: var(--bg);
  color: var(--black);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

/* ── Password Gate ── */
#pw-gate {
  display: flex;
  position: fixed;
  inset: 0;
  z-index: 9999;
  background: #fff;
  align-items: center;
  justify-content: center;
  font-family: var(--sans);
}

.pw-box {
  width: 340px;
  text-align: center;
}

.pw-brand {
  font-size: 11px;
  font-weight: 700;
  letter-spacing: .15em;
  text-transform: uppercase;
  color: var(--red);
  margin-bottom: 28px;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
}

.pw-brand-line {
  display: block;
  width: 28px;
  height: 2px;
  background: var(--red);
}

.pw-heading {
  font-family: var(--display);
  font-size: 32px;
  font-weight: 800;
  color: var(--black);
  line-height: 1.1;
  margin-bottom: 8px;
}

.pw-sub {
  font-size: 13px;
  color: var(--muted);
  margin-bottom: 32px;
}

.pw-input {
  width: 100%;
  padding: 14px 18px;
  border: 1.5px solid var(--black);
  background: #fff;
  font-family: var(--sans);
  font-size: 14px;
  color: var(--black);
  outline: none;
  margin-bottom: 12px;
  transition: border-color .2s;
}

.pw-input:focus { border-color: var(--red); }

.pw-error {
  font-size: 12px;
  color: var(--red);
  margin-bottom: 12px;
  opacity: 0;
  transition: opacity .2s;
  min-height: 18px;
}

.pw-btn {
  width: 100%;
  padding: 14px;
  background: var(--black);
  color: #fff;
  border: none;
  font-family: var(--sans);
  font-size: 13px;
  font-weight: 700;
  letter-spacing: .06em;
  text-transform: uppercase;
  cursor: pointer;
  transition: background .2s;
}

.pw-btn:hover { background: var(--red); }

.pw-footer {
  font-size: 11px;
  color: #bbb;
  margin-top: 20px;
}

@keyframes pw-shake {
  0%, 100% { transform: translateX(0); }
  20%, 60%  { transform: translateX(-8px); }
  40%, 80%  { transform: translateX(8px); }
}

.pw-shake {
  animation: pw-shake .4s ease;
  border-color: var(--red) !important;
}

/* ── Shared Typography ── */
.eyebrow {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 11px;
  font-weight: 600;
  letter-spacing: .15em;
  text-transform: uppercase;
  color: var(--red);
}

.eyebrow::before {
  content: '';
  display: block;
  width: 28px;
  height: 2px;
  background: var(--red);
}

.display-title {
  font-family: var(--display);
  font-weight: 800;
  color: var(--black);
  line-height: 1.05;
  letter-spacing: -0.02em;
}

/* ── Shared Topbar ── */
.topbar {
  position: sticky;
  top: 0;
  z-index: 100;
  background: #fff;
  border-bottom: 1px solid var(--black);
  padding: 0 48px;
  height: 56px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.topbar-left {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 12px;
  font-weight: 500;
  letter-spacing: .06em;
  text-transform: uppercase;
  color: var(--muted);
}

.topbar-divider { color: #ccc; }

.topbar-right {
  display: flex;
  align-items: center;
  gap: 8px;
}

.topbar-btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 12px;
  font-weight: 600;
  letter-spacing: .05em;
  text-transform: uppercase;
  text-decoration: none;
  padding: 7px 16px;
  border: 1.5px solid var(--black);
  color: var(--black);
  transition: background .2s, color .2s;
}

.topbar-btn:hover { background: var(--black); color: #fff; }

.topbar-btn.ghost { border-color: #ccc; color: var(--muted); }
.topbar-btn.ghost:hover { border-color: var(--black); color: var(--black); background: transparent; }

/* ── Shared Footer ── */
footer {
  border-top: 1.5px solid var(--black);
  padding: 28px 48px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 16px;
}

.footer-left { font-size: 12px; color: #888; letter-spacing: .04em; }
.footer-left strong { color: var(--black); }

.footer-links { display: flex; gap: 0; }

.footer-link {
  font-size: 12px;
  font-weight: 500;
  text-decoration: none;
  color: var(--muted);
  padding: 6px 16px;
  border: 1px solid var(--border);
  border-right: none;
  transition: all .2s;
  letter-spacing: .03em;
}

.footer-link:last-child { border-right: 1px solid var(--border); }
.footer-link:hover { background: var(--black); color: #fff; border-color: var(--black); }

/* ── Shared Section ── */
.section {
  max-width: 1200px;
  margin: 0 auto;
  padding: 64px 48px;
  border-bottom: 1px solid var(--border);
}

.section:last-of-type { border-bottom: none; }

.section-head {
  display: flex;
  align-items: baseline;
  gap: 16px;
  margin-bottom: 36px;
}

.section-head h2 {
  font-family: var(--display);
  font-size: 30px;
  font-weight: 700;
  color: var(--red);
  letter-spacing: -.01em;
}

.section-head-line { flex: 1; height: 1px; background: var(--border); }

.section-head-num {
  font-family: var(--mono);
  font-size: 11px;
  color: #aaa;
  font-weight: 400;
}

/* ── Scroll Reveal ── */
.fade-up {
  opacity: 0;
  transform: translateY(16px);
  transition: opacity .5s ease, transform .5s ease;
}

.fade-up.in { opacity: 1; transform: translateY(0); }

/* ── Responsive Base ── */
@media (max-width: 600px) {
  .topbar { padding: 0 20px; }
  footer { padding: 24px 20px; }
  .section { padding-left: 20px; padding-right: 20px; }
  .topbar-btn.ghost { display: none; }
}