/* ============================================
   COLLEGENET — BLACK / WHITE / MINT THEME
   ============================================ */

@import url('https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600;700;800;900&display=swap');

:root {
  --green:        #3ecf8e;
  --green-dark:   #28b07a;
  --green-pale:   #effcf6;
  --green-border: #c3f5e0;
  --bg:           #f0f0ed;
  --bg-off:       #e8e8e4;
  --surface:      #ffffff;
  --border:       #b0b0aa;
  --text:         #0d0d0d;
  --text-muted:   #5a5a5a;
  --text-faint:   #9a9a94;
  --shadow-xs:    0 1px 2px rgba(0,0,0,0.05);
  --shadow-sm:    0 2px 8px rgba(0,0,0,0.06);
  --shadow-md:    0 8px 24px rgba(0,0,0,0.08);
  --shadow-lg:    0 16px 40px rgba(0,0,0,0.10);
  --radius-sm:    8px;
  --radius:       14px;
  --radius-lg:    20px;
  --radius-full:  999px;
}

/* Dark mode disabled — always light */

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  font-family: 'Inter', system-ui, -apple-system, sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}
a { color: inherit; text-decoration: none; transition: color 0.15s; }
img, svg { display: block; }

/* Layout */
.container { max-width: 1160px; margin: 0 auto; padding: 0 1.25rem; }

/* ── HEADER ── */
header {
  position: sticky;
  top: 0;
  z-index: 200;
  background: var(--bg);
  border-bottom: 1px solid var(--border);
}
.nav-container {
  max-width: 1160px;
  margin: 0 auto;
  padding: 0 1.25rem;
  height: 64px;
  display: flex;
  justify-content: space-between;
  align-items: center;
}
.logo {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 1.15rem;
  font-weight: 800;
  letter-spacing: -0.02em;
  color: var(--text) !important;
}
.logo svg { color: var(--green); flex-shrink: 0; }
.logo span { color: var(--green); }

.nav-links {
  display: flex;
  align-items: center;
  gap: 2rem;
}
.nav-links a {
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--text-muted);
  transition: color 0.15s;
}
.nav-links a:hover { color: var(--text); }

/* Hamburger — hidden on desktop */
.nav-hamburger {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  cursor: pointer;
  padding: 8px;
  background: none;
  border: none;
  width: 40px;
  height: 40px;
}
.nav-hamburger span {
  display: block;
  width: 22px;
  height: 2.5px;
  background: var(--text);
  border-radius: 2px;
  transition: all 0.2s;
}

/* Mobile nav drawer — hidden by default */
.mobile-nav {
  display: none !important;
  flex-direction: column;
  position: absolute;
  top: 64px;
  left: 0;
  right: 0;
  background: #fff;
  border-bottom: 2.5px solid #0d0d0d;
  z-index: 199;
  padding: 0.5rem 1.25rem 1rem;
  box-shadow: 0 8px 24px rgba(0,0,0,0.08);
}
.mobile-nav.open {
  display: flex !important;
}
.mobile-nav a {
  display: block;
  padding: 0.85rem 0;
  font-size: 1rem;
  font-weight: 600;
  color: var(--text);
  border-bottom: 1px solid var(--border);
  text-decoration: none;
}
.mobile-nav a:last-child { border-bottom: none; }
.mobile-nav a:hover { color: var(--green); }

/* ── HERO ── */
.hero {
  padding: 6rem 1.25rem 5rem;
  text-align: center;
  border-bottom: 1px solid var(--border);
  background: var(--bg);
}
.hero h1 {
  font-size: clamp(2.4rem, 5vw, 4rem);
  font-weight: 900;
  letter-spacing: -0.04em;
  line-height: 1.1;
  margin-bottom: 1.25rem;
  color: var(--text);
}
.hero h1 em { font-style: normal; color: var(--green); }
.hero > p {
  font-size: 1.15rem;
  color: var(--text-muted);
  max-width: 580px;
  margin: 0 auto 2.5rem;
  line-height: 1.7;
}

/* Search */
.search-container {
  max-width: 640px;
  margin: 0 auto 1.5rem;
  position: relative;
  display: flex;
  align-items: center;
}
.search-input {
  width: 100%;
  padding: 1rem 1.25rem 1rem 3.25rem;
  font-family: inherit;
  font-size: 1rem;
  font-weight: 500;
  background: var(--bg-off);
  color: var(--text);
  border: 1.5px solid var(--border);
  border-radius: var(--radius-full);
  outline: none;
  transition: border-color 0.2s, box-shadow 0.2s;
}
.search-input::placeholder { color: var(--text-faint); }
.search-input:focus {
  border-color: var(--green);
  box-shadow: 0 0 0 3px rgba(62,207,142,0.15);
  background: var(--surface);
}
.search-icon {
  position: absolute;
  left: 1.1rem;
  top: 50%;
  transform: translateY(-50%);
  fill: var(--text-muted);
  width: 18px;
  height: 18px;
  pointer-events: none;
}

/* Quick filter chips */
.quick-filters {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  justify-content: center;
  max-width: 680px;
  margin: 0 auto;
}
.chip {
  padding: 0.4rem 1rem;
  border: 1.5px solid var(--border);
  border-radius: var(--radius-full);
  background: var(--surface);
  color: var(--text-muted);
  font-family: inherit;
  font-size: 0.85rem;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.15s;
  white-space: nowrap;
}
.chip:hover { border-color: var(--green); color: var(--green); background: var(--green-pale); }
.chip.active { background: var(--green); border-color: var(--green); color: #000; }

/* Hero stats */
.hero-stats {
  display: flex;
  justify-content: center;
  gap: 3rem;
  margin-top: 3.5rem;
  padding-top: 2.5rem;
  border-top: 1px solid var(--border);
}
.stat-item { text-align: center; }
.stat-value { display: block; font-size: 1.8rem; font-weight: 900; letter-spacing: -0.04em; color: var(--text); }
.stat-label { display: block; font-size: 0.78rem; font-weight: 600; text-transform: uppercase; letter-spacing: 0.08em; color: var(--text-muted); margin-top: 0.2rem; }

/* Sections */
.section { padding: 5rem 0; border-bottom: 1px solid var(--border); }
.section-header { display: flex; justify-content: space-between; align-items: flex-end; margin-bottom: 2.5rem; }
.section-title { font-size: 1.6rem; font-weight: 800; letter-spacing: -0.03em; color: var(--text); }
.section-subtitle { font-size: 0.95rem; color: var(--text-muted); margin-top: 0.4rem; }

/* ── EVENT CARDS ── */
.events-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(310px, 1fr));
  gap: 1.5rem;
}

.cat-hackathon    { --cat: #3ecf8e; }
.cat-symposium    { --cat: #6366f1; }
.cat-workshop     { --cat: #f59e0b; }
.cat-conference   { --cat: #0ea5e9; }
.cat-competition  { --cat: #ef4444; }
.cat-cultural     { --cat: #ec4899; }
.cat-default      { --cat: #3ecf8e; }

.event-card {
  display: flex;
  flex-direction: column;
  background: #ffffff;
  border: 2.5px solid #0d0d0d;
  border-radius: var(--radius);
  overflow: hidden;
  transition: box-shadow 0.2s, transform 0.2s;
  cursor: pointer;
  text-decoration: none !important;
  color: var(--text);
  position: relative;
}
.event-card::before {
  content: '';
  display: block;
  height: 5px;
  background: var(--cat, var(--green));
  width: 100%;
  flex-shrink: 0;
}
.event-card:hover {
  box-shadow: 5px 5px 0px #0d0d0d;
  transform: translateY(-3px) translateX(-2px);
}

.card-body {
  display: flex;
  flex-direction: column;
  flex: 1;
  padding: 1.1rem 1.25rem 1.25rem;
}
.card-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 0.75rem;
}
.event-category {
  font-size: 0.68rem;
  font-weight: 800;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--cat, var(--green));
}
.event-card > .event-category { padding: 1rem 1.25rem 0; }
.event-date-badge {
  font-size: 0.72rem;
  font-weight: 700;
  color: var(--text-muted);
  background: var(--bg-off);
  border: 1.5px solid var(--border);
  padding: 0.2rem 0.6rem;
  border-radius: var(--radius-sm);
  white-space: nowrap;
}
.event-title {
  font-size: 1rem;
  font-weight: 700;
  letter-spacing: -0.02em;
  line-height: 1.4;
  margin-bottom: 0.45rem;
  color: var(--text);
}
.event-card > .event-title,
.event-card > h3.event-title { padding: 0.7rem 1.25rem 0; }
.event-college {
  font-size: 0.83rem;
  color: var(--text-muted);
  margin-bottom: 0.9rem;
  display: flex;
  align-items: flex-start;
  gap: 0.3rem;
  line-height: 1.4;
}
.event-card > .event-college { padding: 0 1.25rem; }
.event-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 0.45rem;
  font-size: 0.78rem;
  color: var(--text-muted);
  margin-bottom: 1rem;
}
.event-card > .event-meta { padding: 0 1.25rem; }
.meta-item {
  display: inline-flex;
  align-items: center;
  gap: 0.25rem;
  background: var(--bg-off);
  border: 1.5px solid var(--border);
  border-radius: var(--radius-full);
  padding: 0.18rem 0.65rem;
  font-weight: 600;
  white-space: nowrap;
}
.event-meta > div {
  display: inline-flex;
  align-items: center;
  gap: 0.25rem;
  background: var(--bg-off);
  border: 1.5px solid var(--border);
  border-radius: var(--radius-full);
  padding: 0.18rem 0.65rem;
  font-weight: 500;
  white-space: nowrap;
}
/* Event-detail meta: old static pages use .event-meta > div with <br> tags */
/* Override the pill style to show each field on its own line */
.content-box .event-meta {
  display: flex;
  flex-direction: column;
  gap: 0;
  margin-bottom: 0;
}
.content-box .event-meta > div {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 0.25rem;
  background: none;
  border: none;
  border-bottom: 1px solid var(--border);
  border-radius: 0;
  padding: 0.65rem 0;
  font-size: 0.9rem;
  font-weight: 400;
  color: var(--text-muted);
  white-space: normal;
  word-break: break-word;
}
.content-box .event-meta > div:last-child { border-bottom: none; }
.content-box .event-meta > div strong {
  font-weight: 700;
  color: var(--text);
  margin-right: 0.3rem;
  white-space: nowrap;
}
.card-cta {
  margin-top: auto;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.35rem;
  padding: 0.6rem 1rem;
  background: var(--bg-off);
  border-top: 2px solid #0d0d0d;
  font-size: 0.85rem;
  font-weight: 700;
  color: var(--text);
  transition: background 0.15s, color 0.15s;
  letter-spacing: 0.01em;
}
.event-card:hover .card-cta { background: var(--cat, var(--green)); color: #000; }
.event-card > .btn,
.event-card > a.btn {
  display: flex !important;
  align-items: center;
  justify-content: center;
  margin: auto 1.25rem 1.25rem;
  padding: 0.6rem 1rem;
  background: var(--bg-off) !important;
  border: 2px solid #0d0d0d !important;
  border-radius: var(--radius-sm) !important;
  font-size: 0.85rem !important;
  font-weight: 700 !important;
  color: var(--text) !important;
  text-decoration: none !important;
  transition: background 0.15s, color 0.15s !important;
  box-shadow: none !important;
  transform: none !important;
}
.event-card:hover > .btn,
.event-card:hover > a.btn {
  background: var(--cat, var(--green)) !important;
  border-color: var(--cat, var(--green)) !important;
  color: #000 !important;
}

/* ── CATEGORY CARDS ── */
.categories-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
  gap: 1.25rem;
}
.category-card {
  display: flex;
  flex-direction: column;
  padding: 1.75rem 1.5rem;
  background: var(--surface);
  border: 2.5px solid #0d0d0d;
  border-radius: var(--radius);
  text-decoration: none !important;
  color: var(--text);
  transition: box-shadow 0.2s, transform 0.2s;
}
.category-card:hover {
  box-shadow: 4px 4px 0px #0d0d0d;
  transform: translateY(-2px) translateX(-2px);
}
.category-card h3 { font-size: 1.05rem; font-weight: 700; letter-spacing: -0.01em; margin-bottom: 0.4rem; display: flex; align-items: center; gap: 0.5rem; }
.category-card p { font-size: 0.88rem; color: var(--text-muted); line-height: 1.5; }

/* ── FEATURES ── */
.features-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); gap: 1.25rem; }
.feature-card {
  padding: 2rem 1.75rem;
  background: var(--bg-off);
  border: 1.5px solid var(--border);
  border-radius: var(--radius);
}
.feature-icon {
  font-size: 1.5rem;
  margin-bottom: 1rem;
  width: 2.5rem;
  height: 2.5rem;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--green-pale);
  border: 1px solid var(--green-border);
  border-radius: var(--radius-sm);
}
.feature-card h3 { font-size: 1rem; font-weight: 700; letter-spacing: -0.01em; margin-bottom: 0.5rem; }
.feature-card p { font-size: 0.88rem; color: var(--text-muted); line-height: 1.6; }

/* ── CTA SECTION ── */
.cta-section {
  margin: 5rem 0;
  padding: 4rem 2rem;
  background: var(--text);
  border-radius: var(--radius-lg);
  text-align: center;
}
.cta-section h2 { font-size: 1.8rem; font-weight: 800; letter-spacing: -0.03em; color: var(--bg); margin-bottom: 0.75rem; }
.cta-section p { font-size: 1rem; color: rgba(255,255,255,0.6); margin-bottom: 2rem; }

/* ── BUTTONS ── */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0.7rem 1.5rem;
  background: var(--green);
  color: #000;
  font-family: inherit;
  font-size: 0.9rem;
  font-weight: 700;
  border: none;
  border-radius: var(--radius-full);
  cursor: pointer;
  transition: background 0.15s, transform 0.15s, box-shadow 0.15s;
  text-decoration: none !important;
  white-space: nowrap;
}
.btn:hover { background: var(--green-dark); transform: translateY(-1px); box-shadow: 0 4px 12px rgba(62,207,142,0.35); color: #000; }
.btn:active { transform: translateY(0); }
.btn-outline {
  background: transparent;
  color: var(--text-muted);
  border: 1.5px solid var(--border);
}
.btn-outline:hover { border-color: var(--green); color: var(--green); background: var(--green-pale); box-shadow: none; }
.btn-ghost { background: transparent; color: var(--green); padding: 0.7rem 0; font-weight: 700; font-size: 0.88rem; }
.btn-ghost:hover { color: var(--green-dark); background: none; box-shadow: none; transform: none; }

/* ── BADGES ── */
.badges { display: flex; gap: 0.5rem; flex-wrap: wrap; margin-bottom: 0.75rem; }
.badge { display: inline-block; padding: 0.2rem 0.65rem; border-radius: var(--radius-full); font-size: 0.72rem; font-weight: 700; letter-spacing: 0.05em; text-transform: uppercase; }
.badge-status { background: var(--green-pale); color: var(--green-dark); border: 1px solid var(--green-border); }
.badge-primary { background: var(--bg-off); color: var(--text-muted); border: 1px solid var(--border); }

/* ── EVENT DETAIL PAGE ── */
.event-detail-header { padding: 3.5rem 0; border-bottom: 1px solid var(--border); }
.event-detail-title { font-size: clamp(1.8rem, 3.5vw, 2.75rem); font-weight: 900; letter-spacing: -0.04em; line-height: 1.15; margin-bottom: 0.75rem; }
.event-detail-subtitle { font-size: 1.05rem; color: var(--text-muted); margin-top: 0.75rem; }
.event-detail-grid {
  display: grid;
  grid-template-columns: 1fr 340px;
  gap: 2rem;
  align-items: start;
  padding: 2.5rem 0 4rem;
}
.content-box {
  background: var(--surface);
  border: 1.5px solid var(--border);
  border-radius: var(--radius);
  padding: 1.75rem;
  margin-bottom: 1.5rem;
}
.content-box h2 {
  font-size: 0.8rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--text-muted);
  margin-bottom: 1rem;
  padding-bottom: 0.75rem;
  border-bottom: 1px solid var(--border);
}
.content-box p, .content-box div { font-size: 0.95rem; line-height: 1.7; color: var(--text-muted); }
.event-detail-meta { display: flex; flex-direction: column; gap: 0.75rem; }
.meta-row {
  display: flex;
  justify-content: space-between;
  padding: 0.6rem 0;
  border-bottom: 1px solid var(--border);
  font-size: 0.88rem;
}
.meta-row:last-child { border-bottom: none; }
.meta-row strong { color: var(--text); font-weight: 600; }
.meta-row span { color: var(--text-muted); text-align: right; }
.registration-card {
  background: var(--surface);
  border: 1.5px solid var(--border);
  border-radius: var(--radius);
  padding: 1.75rem;
  position: sticky;
  top: 80px;
  text-align: center;
}
.registration-card h3 { font-size: 0.8rem; font-weight: 700; text-transform: uppercase; letter-spacing: 0.08em; color: var(--text-muted); margin-bottom: 1.25rem; }
.registration-card .btn { display: block; width: 100%; justify-content: center; font-size: 1rem; padding: 0.9rem 1.5rem; }

/* ── FOOTER ── */
footer { background: var(--bg); border-top: 1px solid var(--border); padding: 4rem 0 2rem; }
.footer-content {
  max-width: 1160px;
  margin: 0 auto;
  padding: 0 1.25rem;
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 3rem;
}
.footer-brand h3 { font-size: 1.1rem; font-weight: 800; letter-spacing: -0.02em; color: var(--text); margin-bottom: 0.4rem; }
.footer-brand p { font-size: 0.88rem; color: var(--text-muted); }
.footer-links { display: flex; gap: 3rem; }
.footer-col { display: flex; flex-direction: column; gap: 0.6rem; }
.footer-col h4 { font-size: 0.75rem; font-weight: 700; text-transform: uppercase; letter-spacing: 0.08em; color: var(--text); margin-bottom: 0.25rem; }
.footer-col a { font-size: 0.88rem; color: var(--text-muted); transition: color 0.15s; }
.footer-col a:hover { color: var(--green); }
.copyright { max-width: 1160px; margin: 3rem auto 0; padding: 1.5rem 1.25rem 0; border-top: 1px solid var(--border); font-size: 0.82rem; color: var(--text-faint); }

/* ── BREADCRUMB ── */
.breadcrumb { display: flex; align-items: center; gap: 0.5rem; font-size: 0.82rem; color: var(--text-muted); margin-bottom: 1.5rem; }
.breadcrumb a { color: var(--text-muted); }
.breadcrumb a:hover { color: var(--green); }
.breadcrumb span { color: var(--text-faint); }

/* ── MISC ── */
.mt-auto { margin-top: auto; }
.mb-4 { margin-bottom: 1rem; }
.section-divider { border: none; border-top: 1px solid var(--border); margin: 0; }
.no-results { text-align: center; padding: 4rem 1rem; color: var(--text-muted); grid-column: 1 / -1; }
.no-results h3 { font-size: 1.1rem; margin-bottom: 0.5rem; color: var(--text); }
.no-results p { font-size: 0.9rem; }

/* ══════════════════════════════════════
   RESPONSIVE
══════════════════════════════════════ */

/* Tablet */
@media (max-width: 900px) {
  .event-detail-grid { grid-template-columns: 1fr; padding: 1.5rem 0 3rem; }
  .registration-card { position: static; }
}

/* Mobile */
@media (max-width: 768px) {
  body { overflow-x: hidden; }

  /* Nav — forcefully hide links, show hamburger */
  .nav-links { display: none !important; }
  .nav-hamburger { display: flex !important; }

  /* Hero — reduce huge padding */
  .hero { padding: 2.5rem 1rem 2rem; }
  .hero h1 { font-size: clamp(1.75rem, 7vw, 2.5rem); line-height: 1.15; margin-bottom: 1rem; }
  .hero > p { font-size: 0.95rem; margin-bottom: 1.5rem; }
  .search-input { padding: 0.85rem 1rem 0.85rem 2.75rem; font-size: 0.95rem; }
  .quick-filters { gap: 0.4rem; }
  .chip { font-size: 0.8rem; padding: 0.35rem 0.8rem; }
  .hero-stats { gap: 1.5rem; flex-wrap: wrap; margin-top: 2rem; padding-top: 1.5rem; }
  .stat-value { font-size: 1.4rem; }
  .stat-label { font-size: 0.72rem; }

  /* Sections */
  .section { padding: 2.5rem 0; }
  .section-header { flex-direction: column; align-items: flex-start; gap: 1rem; margin-bottom: 1.5rem; }
  .section-title { font-size: 1.3rem; }

  /* Grids */
  .events-grid { grid-template-columns: 1fr; gap: 1rem; }
  .categories-grid { grid-template-columns: 1fr 1fr; gap: 0.9rem; }
  .features-grid { grid-template-columns: 1fr; gap: 0.9rem; }
  .category-card { padding: 1.25rem 1rem; }
  .category-card h3 { font-size: 0.95rem; }

  /* Event detail — fix huge top gap */
  .event-detail-header { padding: 1.75rem 0 1.5rem; }
  .event-detail-title { font-size: clamp(1.4rem, 5vw, 2rem); line-height: 1.2; }
  .event-detail-subtitle { font-size: 0.9rem; margin-top: 0.5rem; }
  .event-detail-grid { grid-template-columns: 1fr; gap: 1rem; padding: 1.25rem 0 2.5rem; }
  .content-box { padding: 1.25rem; margin-bottom: 1rem; }
  .meta-row { flex-direction: column; gap: 0.2rem; }
  .meta-row span { text-align: left; }
  .registration-card { position: static; padding: 1.25rem; }

  /* CTA */
  .cta-section { padding: 2.5rem 1.25rem; margin: 2.5rem 0; border-radius: var(--radius); }
  .cta-section h2 { font-size: 1.4rem; }
  .cta-section p { font-size: 0.9rem; }

  /* Footer */
  .footer-content { flex-direction: column; gap: 2rem; }
  .footer-links { flex-direction: column; gap: 1.5rem; }
  footer { padding: 2.5rem 0 1.5rem; }
  .copyright { margin-top: 2rem; }

  /* Misc */
  .breadcrumb { flex-wrap: wrap; gap: 0.3rem; font-size: 0.78rem; }
  .badges { flex-wrap: wrap; }
}

/* Small mobile */
@media (max-width: 480px) {
  .categories-grid { grid-template-columns: 1fr; }
  .hero-stats { gap: 1.25rem; justify-content: space-around; }
  .nav-container { padding: 0 1rem; }
  .container { padding: 0 1rem; }
  .event-title { font-size: 0.95rem; }
  .card-body { padding: 1rem 1.1rem 1.1rem; }
  .event-card > .event-title,
  .event-card > h3.event-title { padding: 0.6rem 1rem 0; }
  .event-card > .event-category { padding: 0.85rem 1rem 0; }
  .event-card > .event-college { padding: 0 1rem; }
  .event-card > .event-meta { padding: 0 1rem; }
  .event-card > .btn,
  .event-card > a.btn { margin: auto 1rem 1rem; }
}