/* ═══════════════════════════════════════════════════════════════════════════
   HIBIT 2026 – Conference Theme
   Colors: Dark Blue #06377b · Orange #e87722 · Black #0a0a0a · White #fff
   ═══════════════════════════════════════════════════════════════════════════ */

@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700;800;900&family=Outfit:wght@400;500;600;700;800&display=swap');

/* ── Tokens ──────────────────────────────────────────────────────────────── */
:root {
  --primary: #06377b;
  --primary-light: #0d4fa8;
  --accent: #e87722;
  --accent-light: #f59b56;
  --dark: #0a0a0a;
  --dark-mid: #141b2d;
  --dark-card: rgba(14, 24, 50, 0.85);
  --white: #ffffff;
  --gray-100: #f4f6f9;
  --gray-200: #e0e4eb;
  --gray-400: #8a93a6;
  --glass-bg: rgba(6, 55, 123, 0.35);
  --glass-border: rgba(255, 255, 255, 0.12);
  --radius: 16px;
  --radius-sm: 8px;
  --shadow: 0 8px 32px rgba(0, 0, 0, .35);
  --transition: .35s cubic-bezier(.4, 0, .2, 1);
  --font-heading: 'Outfit', sans-serif;
  --font-body: 'Inter', sans-serif;
}

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

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

body {
  font-family: var(--font-body);
  background: var(--dark);
  color: var(--white);
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
}

h1,
h2,
h3,
h4,
h5,
h6 {
  font-family: var(--font-heading);
  font-weight: 700;
}

a {
  color: var(--accent);
  text-decoration: none;
  transition: color var(--transition);
}

a:hover {
  color: var(--accent-light);
}

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

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
}

/* ── Navigation ──────────────────────────────────────────────────────────── */
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  z-index: 1000;
  background: rgba(6, 55, 123, 0.92);
  backdrop-filter: blur(18px);
  border-bottom: 1px solid var(--glass-border);
  padding: 0 0;
  transition: background var(--transition);
}

.navbar .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 72px;
}

.navbar-brand {
  font-family: var(--font-heading);
  font-size: 1.5rem;
  font-weight: 800;
  color: var(--white);
  display: flex;
  align-items: center;
  gap: 10px;
}

.navbar-brand .accent {
  color: var(--accent);
}

.nav-links {
  display: flex;
  gap: 28px;
  list-style: none;
}

.nav-links a {
  color: rgba(255, 255, 255, .8);
  font-size: .9rem;
  font-weight: 500;
  letter-spacing: .3px;
  padding: 6px 0;
  border-bottom: 2px solid transparent;
  transition: all var(--transition);
}

.nav-links a:hover,
.nav-links a.active {
  color: var(--white);
  border-bottom-color: var(--accent);
}

.nav-toggle {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
}

.nav-toggle span {
  display: block;
  width: 26px;
  height: 3px;
  margin: 5px 0;
  background: var(--white);
  border-radius: 2px;
  transition: var(--transition);
}

/* ── Hero / Header ───────────────────────────────────────────────────────── */
.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  position: relative;
  overflow: hidden;
  background: var(--primary);
  padding-top: 72px;
}

.hero-content {
  position: relative;
  z-index: 1;
  max-width: 820px;
}

.hero-logo {
  max-width: 700px;
  width: 100%;
  height: auto;
  margin: 0 auto 40px;
  display: block;
}

/* Countdown */
.countdown {
  display: flex;
  justify-content: center;
  gap: 16px;
  flex-wrap: wrap;
  margin-bottom: 40px;
}

.countdown-box {
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius);
  padding: 20px 24px;
  min-width: 100px;
  backdrop-filter: blur(12px);
  transition: transform var(--transition), box-shadow var(--transition);
}

.countdown-box:hover {
  transform: translateY(-4px);
  box-shadow: 0 12px 40px rgba(232, 119, 34, .2);
}

.countdown-box .num {
  display: block;
  font-family: var(--font-heading);
  font-size: 2.6rem;
  font-weight: 800;
  color: var(--accent);
  line-height: 1;
}

.countdown-box .label {
  font-size: .75rem;
  text-transform: uppercase;
  letter-spacing: 1.5px;
  color: rgba(255, 255, 255, .55);
  margin-top: 6px;
}

.cta-btn {
  display: inline-block;
  background: linear-gradient(135deg, var(--accent), #d4601b);
  color: var(--white);
  font-weight: 700;
  font-size: 1rem;
  padding: 14px 38px;
  border-radius: 50px;
  border: none;
  box-shadow: 0 6px 24px rgba(232, 119, 34, .35);
  transition: all var(--transition);
  cursor: pointer;
}

.cta-btn:hover {
  transform: translateY(-2px);
  box-shadow: 0 10px 36px rgba(232, 119, 34, .5);
  color: var(--white);
}

/* ── Section Common ──────────────────────────────────────────────────────── */
.section {
  padding: 100px 0;
}

.section-dark {
  background: var(--dark);
}

.section-blue {
  background: linear-gradient(180deg, #041f4a 0%, var(--primary) 100%);
}

.section-alt {
  background: var(--dark-mid);
}

.section-header {
  text-align: center;
  margin-bottom: 60px;
}

.section-header h2 {
  font-size: 2.2rem;
  margin-bottom: 12px;
}

.section-header .bar {
  display: block;
  width: 60px;
  height: 4px;
  margin: 0 auto 16px;
  background: var(--accent);
  border-radius: 2px;
}

.section-header p {
  color: var(--gray-400);
  max-width: 620px;
  margin: 0 auto;
}

/* ── About ───────────────────────────────────────────────────────────────── */
.about-text {
  max-width: 800px;
  margin: 0 auto;
  text-align: center;
  color: rgba(255, 255, 255, .75);
  font-size: 1.05rem;
}

/* ── Program Schedule ────────────────────────────────────────────────────── */
.schedule-container {
  max-width: 960px;
  margin: 0 auto;
  background: var(--dark-card);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow);
}

.schedule-tabs {
  display: flex;
  background: rgba(0, 0, 0, 0.2);
  border-bottom: 1px solid var(--glass-border);
}

.schedule-tab {
  flex: 1;
  background: none;
  border: none;
  padding: 20px 10px;
  cursor: pointer;
  color: rgba(255, 255, 255, 0.6);
  border-bottom: 3px solid transparent;
  transition: all var(--transition);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  font-family: var(--font-heading);
}

.schedule-tab:hover {
  background: rgba(255, 255, 255, 0.03);
  color: var(--white);
}

.schedule-tab.active {
  color: var(--accent);
  border-bottom-color: var(--accent);
  background: rgba(232, 119, 34, 0.05);
}

.schedule-tab .tab-day {
  font-size: 1.2rem;
  font-weight: 700;
  margin-bottom: 4px;
}

.schedule-tab .tab-date {
  font-size: 0.85rem;
  font-weight: 400;
}

.schedule-content {
  padding: 30px;
}

.schedule-pane {
  display: none;
  opacity: 0;
  transform: translateY(10px);
  transition: opacity 0.4s ease, transform 0.4s ease;
}

.schedule-pane.active {
  display: block;
  opacity: 1;
  transform: translateY(0);
}

.schedule-list {
  list-style: none;
  position: relative;
}

.schedule-list::before {
  content: '';
  position: absolute;
  top: 0;
  bottom: 0;
  left: 20px;
  width: 2px;
  background: var(--glass-border);
}

.schedule-item {
  position: relative;
  padding-left: 50px;
  padding-bottom: 30px;
}

.schedule-item:last-child {
  padding-bottom: 0;
}

.schedule-item::before {
  content: '';
  position: absolute;
  left: 14px;
  top: 6px;
  width: 14px;
  height: 14px;
  border-radius: 50%;
  background: var(--dark-mid);
  border: 2px solid var(--primary-light);
  z-index: 1;
}

.schedule-item.type-keynote::before {
  border-color: var(--accent);
  background: var(--accent);
}

.schedule-item.type-break::before {
  border-color: var(--gray-400);
}

.schedule-item.type-invited::before {
  border-color: #ffd700;
}

.schedule-item.type-social::before {
  border-color: #ff5e62;
}

.item-time {
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--accent);
  margin-bottom: 6px;
  display: flex;
  align-items: center;
  gap: 8px;
}

.item-title {
  font-size: 1.15rem;
  margin-bottom: 4px;
  color: var(--white);
}

.item-speaker {
  font-size: 0.9rem;
  color: rgba(255, 255, 255, 0.7);
  display: flex;
  align-items: center;
  gap: 6px;
}

/* ── Speakers ────────────────────────────────────────────────────────────── */
.speakers-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 28px;
}

.speaker-card {
  background: var(--dark-card);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius);
  padding: 32px 24px;
  text-align: center;
  position: relative;
  overflow: hidden;
  cursor: pointer;
  transition: transform var(--transition), box-shadow var(--transition), border-color var(--transition);
}

.speaker-card:hover {
  transform: translateY(-6px);
  box-shadow: 0 16px 48px rgba(232, 119, 34, .15);
  border-color: var(--accent);
}

.speaker-avatar {
  width: 100px;
  height: 100px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--primary-light), var(--accent));
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 18px;
  font-size: 2rem;
  font-weight: 800;
  color: var(--white);
  text-transform: uppercase;
}

.speaker-card h4 {
  font-size: 1.15rem;
  margin-bottom: 4px;
}

.speaker-card .speaker-aff {
  color: var(--accent);
  font-size: .85rem;
  font-weight: 500;
  margin-bottom: 4px;
}

.speaker-card .speaker-aff-detail {
  color: var(--gray-400);
  font-size: .8rem;
  margin-bottom: 12px;
}

.speaker-badge {
  display: inline-block;
  padding: 3px 12px;
  border-radius: 20px;
  font-size: .72rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 1px;
  margin-bottom: 14px;
}

.badge-keynote {
  background: rgba(232, 119, 34, .2);
  color: var(--accent);
  border: 1px solid rgba(232, 119, 34, .4);
}

.badge-invited {
  background: rgba(6, 55, 123, .3);
  color: var(--accent-light);
  border: 1px solid rgba(6, 55, 123, .5);
}

.speaker-links {
  display: flex;
  justify-content: center;
  gap: 14px;
  margin-bottom: 14px;
}

.speaker-links a {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(255, 255, 255, .08);
  border: 1px solid var(--glass-border);
  color: var(--white);
  font-size: .9rem;
  transition: all var(--transition);
}

.speaker-links a:hover {
  background: var(--accent);
  border-color: var(--accent);
  color: var(--white);
}

.speaker-bio {
  max-height: 0;
  overflow: hidden;
  opacity: 0;
  transition: max-height .5s ease, opacity .4s ease, padding .4s ease;
  text-align: left;
  font-size: .85rem;
  color: rgba(255, 255, 255, .65);
  line-height: 1.6;
  padding: 0 4px;
}

.speaker-card.expanded .speaker-bio {
  max-height: 600px;
  opacity: 1;
  padding-top: 16px;
  border-top: 1px solid var(--glass-border);
}

.speaker-expand-hint {
  font-size: .75rem;
  color: var(--gray-400);
  margin-top: 8px;
  transition: color var(--transition);
}

.speaker-card:hover .speaker-expand-hint {
  color: var(--accent);
}

/* ── Topics ──────────────────────────────────────────────────────────────── */
.topics-grid {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 12px;
  max-width: 900px;
  margin: 0 auto;
}

.topic-chip {
  background: rgba(255, 255, 255, .06);
  border: 1px solid var(--glass-border);
  border-radius: 30px;
  padding: 8px 20px;
  font-size: .85rem;
  color: rgba(255, 255, 255, .75);
  transition: all var(--transition);
}

.topic-chip:hover {
  background: rgba(232, 119, 34, .15);
  border-color: var(--accent);
  color: var(--white);
}

/* ── Pricing / Registration ──────────────────────────────────────────────── */
.pricing-table-wrapper {
  max-width: 900px;
  margin: 0 auto;
  background: var(--dark-card);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius);
  overflow: hidden;
}

.pricing-table {
  width: 100%;
  border-collapse: collapse;
}

.pricing-table thead th {
  background: var(--primary);
  color: var(--white);
  font-family: var(--font-heading);
  font-weight: 700;
  font-size: .95rem;
  padding: 18px 24px;
  text-align: left;
  border-bottom: 2px solid var(--accent);
}

.pricing-table tbody tr {
  transition: background var(--transition);
}

.pricing-table tbody tr:nth-child(even) {
  background: rgba(255, 255, 255, .03);
}

.pricing-table tbody tr:hover {
  background: rgba(232, 119, 34, .08);
}

.pricing-table td {
  padding: 16px 24px;
  font-size: .95rem;
  color: rgba(255, 255, 255, .8);
  border-bottom: 1px solid rgba(255, 255, 255, .06);
}

.pricing-table td:first-child {
  font-weight: 600;
  color: var(--white);
}

.pricing-table .price-highlight {
  color: var(--accent);
  font-weight: 700;
}

.pricing-note {
  text-align: center;
  margin-top: 20px;
  font-size: .85rem;
  color: var(--gray-400);
}

/* ── Sponsors ────────────────────────────────────────────────────────────── */
.sponsor-tier {
  margin-bottom: 50px;
}

.sponsor-tier-label {
  text-align: center;
  margin-bottom: 24px;
  font-family: var(--font-heading);
  font-size: 1.3rem;
  font-weight: 700;
}

.tier-platinum .sponsor-tier-label {
  color: #c0c0c0;
}

.tier-gold .sponsor-tier-label {
  color: #ffd700;
}

.tier-silver .sponsor-tier-label {
  color: #b0b0b0;
}

.tier-bronze .sponsor-tier-label {
  color: #cd7f32;
}

.sponsor-logos {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 24px;
}

.sponsor-logo-card {
  background: var(--dark-card);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-sm);
  padding: 24px 32px;
  min-width: 180px;
  text-align: center;
  transition: all var(--transition);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 600;
  color: rgba(255, 255, 255, .7);
}

.sponsor-logo-card:hover {
  border-color: var(--accent);
  transform: translateY(-3px);
  box-shadow: 0 8px 28px rgba(232, 119, 34, .12);
  color: var(--white);
}

.tier-platinum .sponsor-logo-card {
  min-width: 260px;
  padding: 32px 48px;
  font-size: 1.2rem;
  font-weight: 700;
  border-color: rgba(192, 192, 192, .3);
}

/* ── Committees ──────────────────────────────────────────────────────────── */
.committee-block {
  margin-bottom: 40px;
  text-align: center;
}

.committee-block h4 {
  font-size: 1.1rem;
  color: var(--accent);
  margin-bottom: 12px;
}

.committee-block ul {
  list-style: none;
}

.committee-block li {
  padding: 4px 0;
  color: rgba(255, 255, 255, .7);
  font-size: .9rem;
}

/* ── Previous HIBITs ─────────────────────────────────────────────────────── */
.prev-hibits {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 12px;
  max-width: 700px;
  margin: 0 auto;
}

.prev-hibit-link {
  background: rgba(255, 255, 255, .06);
  border: 1px solid var(--glass-border);
  border-radius: 30px;
  padding: 8px 20px;
  font-size: .85rem;
  color: rgba(255, 255, 255, .7);
  transition: all var(--transition);
}

.prev-hibit-link:hover {
  background: var(--accent);
  border-color: var(--accent);
  color: var(--white);
}

/* ── Footer ──────────────────────────────────────────────────────────────── */
.footer {
  background: #020c1c;
  border-top: 1px solid var(--glass-border);
  padding: 40px 0;
  text-align: center;
}

.footer p {
  color: var(--gray-400);
  font-size: .85rem;
  margin-bottom: 6px;
}

.footer a {
  color: var(--accent);
}

/* ── Contact & Location ──────────────────────────────────────────────────── */
.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 30px;
  max-width: 1000px;
  margin: 0 auto;
}

.contact-form-card,
.location-card {
  background: var(--dark-card);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius);
  padding: 32px;
  box-shadow: var(--shadow);
}

.contact-form-card h4,
.location-card h4 {
  font-size: 1.3rem;
  margin-bottom: 20px;
  color: var(--white);
}

.form-group {
  margin-bottom: 16px;
}

.form-control {
  width: 100%;
  padding: 14px 18px;
  background: rgba(0, 0, 0, 0.2);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-sm);
  color: var(--white);
  font-family: var(--font-body);
  font-size: 0.95rem;
  transition: all var(--transition);
}

.form-control::placeholder {
  color: rgba(255, 255, 255, 0.4);
}

.form-control:focus {
  outline: none;
  border-color: var(--accent);
  background: rgba(0, 0, 0, 0.4);
  box-shadow: 0 0 0 3px rgba(232, 119, 34, 0.15);
}

.cta-btn.btn-block {
  text-align: center;
  font-size: 1rem;
}

.venue-details {
  margin-bottom: 20px;
  color: rgba(255, 255, 255, 0.75);
  line-height: 1.8;
}

.venue-details i {
  color: var(--accent);
  margin-right: 8px;
  width: 16px;
  text-align: center;
}

.venue-details a {
  color: var(--accent-light);
}

.map-container {
  width: 100%;
  height: 250px;
  border-radius: var(--radius-sm);
  overflow: hidden;
  border: 1px solid var(--glass-border);
  background: var(--dark-mid);
}

/* ── Language Toggle ─────────────────────────────────────────────────────── */
.lang-toggle {
  display: flex;
  align-items: center;
  gap: 6px;
  background: rgba(255, 255, 255, 0.1);
  border: 1px solid rgba(255, 255, 255, 0.25);
  border-radius: 30px;
  padding: 6px 14px;
  cursor: pointer;
  color: var(--white);
  font-family: var(--font-heading);
  font-size: 0.85rem;
  font-weight: 600;
  transition: all var(--transition);
  white-space: nowrap;
}

.lang-toggle:hover {
  background: rgba(232, 119, 34, 0.2);
  border-color: var(--accent);
  color: var(--accent);
}

.lang-toggle .lang-flag {
  font-size: 1.1rem;
  line-height: 1;
}

.lang-toggle .lang-label {
  letter-spacing: 0.5px;
}

.lang-toggle-mobile {
  display: none;
  margin-left: 10px;
}

/* ── Responsive ──────────────────────────────────────────────────────────── */
@media (max-width: 768px) {
  .hero-logo {
    max-width: 90%;
    margin-bottom: 24px;
  }

  .countdown {
    gap: 10px;
  }

  .countdown-box {
    min-width: 74px;
    padding: 14px 10px;
  }

  .countdown-box .num {
    font-size: 1.8rem;
  }

  .nav-links {
    display: none;
    position: fixed;
    top: 72px;
    left: 0;
    width: 100%;
    background: rgba(6, 55, 123, .97);
    backdrop-filter: blur(18px);
    flex-direction: column;
    align-items: center;
    gap: 0;
    padding: 20px 0;
  }

  .nav-links.open {
    display: flex;
  }

  .nav-links a {
    padding: 14px 0;
  }

  .nav-toggle {
    display: block;
  }

  .lang-toggle-mobile {
    display: flex;
  }

  .speakers-grid {
    grid-template-columns: 1fr;
  }

  .pricing-table thead th,
  .pricing-table td {
    padding: 12px 14px;
    font-size: .85rem;
  }

  .contact-grid {
    grid-template-columns: 1fr;
    gap: 20px;
  }
}