/* ============================================================
   STEMfest Website — Retro Sunburst Stylesheet
   ============================================================ */

/* ---------- Custom Properties ---------- */
:root {
  /* Festival palette */
  --blue: #1D3D96;
  --teal: #00B88D;
  --amber: #F0A830;
  --dark: #12122a;

  /* Semantic tokens (backward-compat for game.css) */
  --color-stem: var(--blue);
  --color-fest: var(--amber);
  --color-bg: #ffffff;
  --color-bg-alt: #FFF9F0;
  --color-text: #1c1c2e;
  --color-text-muted: #5a5a7a;
  --color-border: #e0e4f0;
  --color-card-bg: #ffffff;

  --radius-sm: 10px;
  --radius-md: 16px;
  --radius-lg: 24px;

  --shadow-card: 0 4px 24px rgba(29, 61, 150, 0.10);
  --shadow-hover: 0 8px 36px rgba(29, 61, 150, 0.18);

  --font-display: 'Lilita One', cursive;
  --font-body: 'Fredoka', system-ui, -apple-system, sans-serif;
  --font-sans: var(--font-body);
  --font-mono: 'Fira Code', 'Cascadia Code', monospace;

  --transition: 0.25s ease;
  --max-width: 1100px;
  --header-h: 64px;
}

/* ---------- Reset ---------- */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; font-size: 16px; }

body {
  font-family: var(--font-body);
  color: var(--color-text);
  background: var(--color-bg);
  line-height: 1.6;
}

img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }
ul { list-style: none; }

/* ---------- Utilities ---------- */
.container {
  width: 100%;
  max-width: var(--max-width);
  margin-inline: auto;
  padding-inline: clamp(1rem, 5vw, 2rem);
}

.btn {
  display: inline-block;
  padding: 0.85rem 2rem;
  border-radius: 100px;
  font-family: var(--font-body);
  font-weight: 600;
  font-size: 1.05rem;
  cursor: pointer;
  border: none;
  transition: transform var(--transition), box-shadow var(--transition);
}

.btn:hover { transform: translateY(-2px); box-shadow: var(--shadow-hover); }
.btn:active { transform: translateY(0); }

.btn-primary {
  background: var(--amber);
  color: var(--dark);
}

/* ---------- CLANCY BANNER ---------- */
.clancy-banner {
  background: linear-gradient(90deg, var(--amber), var(--teal), var(--blue), var(--amber), var(--teal));
  background-size: 300% 100%;
  animation: clancy-bg 3s linear infinite;
  padding: 1rem;
  text-align: center;
}

.clancy-text {
  font-family: var(--font-display);
  font-size: clamp(1.8rem, 5vw, 3rem);
  color: #fff;
  text-shadow: 2px 2px 0 rgba(0,0,0,0.2);
  animation: clancy-flash 0.6s ease-in-out infinite alternate;
}

@keyframes clancy-bg {
  0%   { background-position: 0% 50%; }
  100% { background-position: 300% 50%; }
}

@keyframes clancy-flash {
  0%   { opacity: 1; transform: scale(1); }
  100% { opacity: 0.8; transform: scale(1.04); }
}

/* ---------- HEADER ---------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  height: var(--header-h);
  background: var(--blue);
  border-bottom: 3px solid var(--amber);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 100%;
}

/* Logo */
.logo {
  font-family: var(--font-display);
  font-size: 1.5rem;
  color: #fff;
  letter-spacing: 1px;
}

/* Legacy spans — both render white in header */
.logo-stem, .logo-fest { color: inherit; }

/* Nav */
.main-nav ul {
  display: flex;
  gap: 1.75rem;
}

.main-nav a {
  font-weight: 500;
  color: rgba(255,255,255,0.8);
  transition: color var(--transition);
  position: relative;
}

.main-nav a::after {
  content: '';
  position: absolute;
  bottom: -4px; left: 0; right: 0;
  height: 2px;
  background: var(--amber);
  transform: scaleX(0);
  transition: transform var(--transition);
}

.main-nav a:hover { color: var(--amber); }
.main-nav a:hover::after { transform: scaleX(1); }

/* Nav game pill */
.nav-game-link {
  background: var(--amber) !important;
  color: var(--dark) !important;
  padding: 0.3rem 0.85rem;
  border-radius: 100px;
  font-size: 0.875rem;
  font-weight: 600;
  transition: background var(--transition), transform var(--transition) !important;
}

.nav-game-link:hover {
  background: #d99420 !important;
  transform: translateY(-1px);
}

.nav-game-link::after { display: none !important; }

/* Hamburger */
.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 4px;
}

.nav-toggle span {
  display: block;
  width: 24px;
  height: 2px;
  background: #fff;
  border-radius: 2px;
  transition: transform var(--transition), opacity var(--transition);
}

/* ---------- HERO — SUNBURST ---------- */
.hero {
  min-height: calc(100vh - var(--header-h));
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 2rem;
  background: repeating-conic-gradient(
    from 5deg at 50% 50%,
    var(--blue)  0deg  15deg,
    var(--teal)  15deg 30deg,
    var(--amber) 30deg 45deg
  );
}

/* White card overlay */
.hero-card {
  background: #fff;
  border-radius: var(--radius-lg);
  padding: clamp(2rem, 5vw, 3.5rem) clamp(2rem, 6vw, 4.5rem);
  text-align: center;
  max-width: 560px;
  width: 100%;
  box-shadow: 0 12px 60px rgba(0,0,0,0.25);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.6rem;
}

.hero-eyebrow {
  font-family: var(--font-body);
  font-size: 0.8rem;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--color-text-muted);
}

.hero-title {
  font-family: var(--font-display);
  font-size: clamp(3.5rem, 12vw, 6.5rem);
  color: var(--blue);
  line-height: 1;
  letter-spacing: 2px;
}

/* Legacy spans — render same color in new design */
.hero-stem, .hero-fest { color: inherit; }

.hero-subtitle {
  font-family: var(--font-display);
  font-size: clamp(1.2rem, 3.5vw, 1.8rem);
  color: var(--teal);
  letter-spacing: 1px;
}

.hero-tagline {
  font-size: 0.95rem;
  color: var(--color-text-muted);
  max-width: 420px;
  line-height: 1.5;
}

.hero-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  justify-content: center;
  margin-top: 0.25rem;
}

.hero-badge {
  background: var(--color-bg-alt);
  border: 2px solid var(--color-border);
  border-radius: 100px;
  padding: 0.35rem 0.9rem;
  font-size: 0.85rem;
  font-weight: 500;
}

/* ---------- SECTIONS ---------- */
.section { padding-block: clamp(3rem, 8vw, 5rem); }
.section-alt { background: var(--color-bg-alt); }

.section-title {
  font-family: var(--font-display);
  font-size: clamp(1.75rem, 4vw, 2.5rem);
  color: var(--blue);
  margin-bottom: 0.5rem;
  text-align: center;
  letter-spacing: 0.5px;
}

.section-lead {
  font-size: 1.05rem;
  color: var(--color-text-muted);
  text-align: center;
  max-width: 580px;
  margin-inline: auto;
  margin-bottom: 2.5rem;
}

/* ---------- COUNTDOWN SECTION ---------- */
.countdown-section {
  background: var(--dark);
  color: #fff;
  padding: clamp(2.5rem, 7vw, 4.5rem) 1rem;
  text-align: center;
  position: relative;
  overflow: hidden;
}

/* Subtle sunburst overlay on countdown */
.countdown-section::before {
  content: '';
  position: absolute;
  inset: 0;
  background: repeating-conic-gradient(
    from 5deg at 50% 50%,
    rgba(29, 61, 150, 0.12) 0deg 15deg,
    rgba(0, 184, 141, 0.08) 15deg 30deg,
    rgba(240, 168, 48, 0.06) 30deg 45deg
  );
  pointer-events: none;
}

.countdown-section > .container {
  position: relative;
  z-index: 1;
}

.cd-heading {
  font-family: var(--font-display);
  font-size: clamp(1.5rem, 4vw, 2.25rem);
  margin-bottom: 0.3rem;
}

.cd-date {
  font-size: 1rem;
  color: rgba(255,255,255,0.5);
  font-weight: 500;
  margin-bottom: 2rem;
}

/* Grid: 2-col, caesium spans full, then 2-col again */
.cd-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1rem;
  max-width: 740px;
  margin-inline: auto;
}

.cd-card {
  background: rgba(255,255,255,0.07);
  border: 1px solid rgba(255,255,255,0.12);
  border-radius: var(--radius-md);
  padding: 1.5rem 1rem 1.25rem;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.6rem;
}

.cd-card-wide {
  grid-column: 1 / -1;
}

.cd-card-head {
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--amber);
}

.cd-icon {
  font-style: normal;
  margin-right: 0.2rem;
}

/* Digit groups (Earth / Mars) */
.cd-digits {
  display: flex;
  gap: 0.6rem;
  justify-content: center;
}

.cd-unit {
  display: flex;
  flex-direction: column;
  align-items: center;
  min-width: 52px;
}

.cd-num {
  font-family: var(--font-mono);
  font-size: clamp(1.8rem, 5vw, 2.6rem);
  font-weight: 800;
  line-height: 1.1;
  font-variant-numeric: tabular-nums;
  color: #fff;
}

.cd-sub {
  font-size: 0.65rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: rgba(255,255,255,0.4);
  margin-top: 0.15rem;
}

/* Big ticker numbers (caesium, heartbeats, orbit) */
.cd-ticker {
  font-family: var(--font-mono);
  font-size: clamp(1.3rem, 3.5vw, 2rem);
  font-weight: 700;
  font-variant-numeric: tabular-nums;
  letter-spacing: 0.04em;
  color: #fff;
  word-break: break-all;
  line-height: 1.3;
}

.cd-ticker-sm {
  font-size: clamp(1.1rem, 3vw, 1.6rem);
}

.cd-note {
  font-size: 0.72rem;
  color: rgba(255,255,255,0.35);
  line-height: 1.4;
  max-width: 400px;
}

.cd-note em {
  font-style: italic;
  color: rgba(255,255,255,0.55);
}

/* Post-event state */
.cd-finished {
  text-align: center;
  padding: 2rem 0;
}

.cd-finished-icon {
  font-size: 4rem;
  display: block;
  margin-bottom: 0.5rem;
}

.cd-finished-msg {
  font-family: var(--font-display);
  font-size: 1.5rem;
}

/* ---------- ABOUT GRID ---------- */
.about-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 1.5rem;
}

.about-card {
  background: var(--color-card-bg);
  border-radius: var(--radius-md);
  padding: 2rem 1.5rem;
  text-align: center;
  box-shadow: var(--shadow-card);
  border-top: 4px solid var(--teal);
  transition: transform var(--transition), box-shadow var(--transition);
}

.about-card:nth-child(1) { border-top-color: var(--blue); }
.about-card:nth-child(2) { border-top-color: var(--teal); }
.about-card:nth-child(3) { border-top-color: var(--amber); }

.about-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-hover); }

.about-icon { font-size: 2.5rem; display: block; margin-bottom: 1rem; }

.about-card h3 {
  font-family: var(--font-display);
  font-size: 1.2rem;
  margin-bottom: 0.5rem;
  color: var(--blue);
}

.about-card p { color: var(--color-text-muted); font-size: 0.95rem; }

/* ---------- EVENTS GRID ---------- */
.events-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 1.5rem;
}

.event-card {
  background: var(--color-card-bg);
  border-radius: var(--radius-md);
  overflow: hidden;
  box-shadow: var(--shadow-card);
  transition: transform var(--transition), box-shadow var(--transition);
}

.event-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-hover); }

.event-card-header {
  background: linear-gradient(135deg, var(--blue), var(--teal));
  padding: 1.25rem 1.5rem 1rem;
}

.event-card.placeholder .event-card-header {
  background: linear-gradient(135deg, #c5d4f0, #d0eee4);
}

.event-tag {
  background: rgba(255,255,255,0.25);
  color: #fff;
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  padding: 0.2rem 0.6rem;
  border-radius: 100px;
}

.event-card.placeholder .event-tag {
  background: rgba(29, 61, 150, 0.15);
  color: var(--blue);
}

.event-title {
  font-size: 1.1rem;
  font-weight: 700;
  padding: 1rem 1.5rem 0.4rem;
}

.event-desc {
  color: var(--color-text-muted);
  font-size: 0.9rem;
  padding: 0 1.5rem 1.5rem;
}

/* ---------- STALLS GRID ---------- */
.stalls-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
  gap: 1.5rem;
}

.stall-card {
  background: var(--color-card-bg);
  border-radius: var(--radius-md);
  padding: 2rem 1.5rem;
  text-align: center;
  box-shadow: var(--shadow-card);
  transition: transform var(--transition), box-shadow var(--transition);
}

.stall-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-hover); }

.stall-icon { font-size: 2.5rem; display: block; margin-bottom: 1rem; }

.stall-card h3 {
  font-size: 1rem;
  font-weight: 700;
  margin-bottom: 0.4rem;
}

.stall-card p { color: var(--color-text-muted); font-size: 0.875rem; }

/* ---------- GAME PROMO ---------- */
.game-promo-card {
  display: flex;
  align-items: center;
  gap: 1.75rem;
  background: #fff;
  border: 3px solid var(--amber);
  border-radius: var(--radius-lg);
  padding: 2rem;
  max-width: 780px;
  margin-inline: auto;
  box-shadow: var(--shadow-card);
  transition: box-shadow var(--transition), transform var(--transition);
}

.game-promo-card:hover {
  box-shadow: var(--shadow-hover);
  transform: translateY(-3px);
}

.promo-icon {
  font-size: 3.5rem;
  flex-shrink: 0;
  animation: gentle-spin 4s ease-in-out infinite alternate;
}

@keyframes gentle-spin {
  0%   { transform: rotate(-8deg) scale(1);    }
  100% { transform: rotate(8deg)  scale(1.08); }
}

.promo-text { flex: 1; }

.promo-name {
  font-family: var(--font-display);
  font-size: 1.4rem;
  margin-bottom: 0.4rem;
  color: var(--blue);
}

.promo-desc {
  font-size: 0.95rem;
  color: var(--color-text-muted);
  margin-bottom: 0.85rem;
  line-height: 1.5;
}

.promo-badges {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
}

.promo-badge {
  background: var(--color-bg-alt);
  border: 2px solid var(--color-border);
  border-radius: 100px;
  padding: 0.25rem 0.75rem;
  font-size: 0.8rem;
  font-weight: 600;
}

.promo-cta { flex-shrink: 0; }

/* ---------- CONTACT FORM ---------- */
.contact-inner { max-width: 640px; }

.contact-form {
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
  margin-top: 0.5rem;
}

.form-group { display: flex; flex-direction: column; gap: 0.4rem; }

.form-group label {
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--color-text);
}

.form-group input,
.form-group select,
.form-group textarea {
  width: 100%;
  padding: 0.75rem 1rem;
  border: 2px solid var(--color-border);
  border-radius: var(--radius-sm);
  font-family: var(--font-body);
  font-size: 1rem;
  color: var(--color-text);
  background: #fff;
  transition: border-color var(--transition), box-shadow var(--transition);
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
  outline: none;
  border-color: var(--blue);
  box-shadow: 0 0 0 3px rgba(29, 61, 150, 0.12);
}

.form-note {
  font-size: 0.875rem;
  color: var(--color-text-muted);
  min-height: 1.25rem;
}

.form-note.success { color: #188038; }
.form-note.error   { color: #c5221f; }

/* ---------- FOOTER ---------- */
.site-footer {
  background: var(--blue);
  color: rgba(255,255,255,0.8);
  padding-block: 2.5rem;
  text-align: center;
}

.footer-inner { display: flex; flex-direction: column; gap: 0.4rem; align-items: center; }

.footer-logo {
  font-family: var(--font-display);
  font-size: 1.5rem;
  color: #fff;
}

.footer-logo .logo-stem,
.footer-logo .logo-fest { color: inherit; }

.footer-school { font-weight: 600; color: var(--amber); }
.footer-copy { font-size: 0.8rem; }

/* ---------- RESPONSIVE ---------- */
@media (max-width: 640px) {
  .main-nav {
    display: none;
    position: absolute;
    top: var(--header-h);
    left: 0; right: 0;
    background: var(--blue);
    border-bottom: 3px solid var(--amber);
    padding: 1rem 2rem 1.5rem;
  }

  .main-nav.open { display: block; }

  .main-nav ul { flex-direction: column; gap: 1rem; }

  .nav-toggle { display: flex; }

  /* Animate hamburger to X when open */
  .nav-toggle[aria-expanded="true"] span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
  .nav-toggle[aria-expanded="true"] span:nth-child(2) { opacity: 0; }
  .nav-toggle[aria-expanded="true"] span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

  .hero-meta { flex-direction: column; align-items: center; }

  .game-promo-card {
    flex-direction: column;
    text-align: center;
    padding: 1.5rem;
    gap: 1rem;
  }

  .promo-badges { justify-content: center; }
  .promo-cta { width: 100%; text-align: center; }
}

@media (max-width: 600px) {
  .cd-grid {
    grid-template-columns: 1fr;
  }

  .cd-card-wide {
    grid-column: auto;
  }

  .cd-unit { min-width: 44px; }
  .cd-num  { font-size: 1.6rem; }
}