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

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

:root {
  --bg: #f2efe6;
  --fg: #132a44;
  --card: #f7f5ee;
  --card-border: #e0ddd0;
  --primary: #2a8c82;
  --primary-fg: #fff;
  --secondary: #132a44;
  --secondary-fg: #f2efe6;
  --accent: #e8b820;
  --accent-fg: #132a44;
  --muted: #c8c3b4;
  --muted-fg: #5e6d7a;
  --radius: 0.75rem;
}

html { scroll-behavior: smooth; }
body {
  font-family: 'League Spartan', sans-serif;
  background: var(--bg);
  color: var(--fg);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

a { color: inherit; text-decoration: none; }
img { max-width: 100%; display: block; }
button { cursor: pointer; font-family: inherit; }
input, textarea, select { font-family: inherit; }

/* ===== UTILITY ===== */
.container { max-width: 1200px; margin: 0 auto; padding: 0 1.5rem; }
.section-padding { padding: 5rem 0; }
.text-center { text-align: center; }
.hidden { display: none !important; }

/* ===== HEADER ===== */
#header {
  position: fixed; top: 0; left: 0; right: 0; z-index: 100;
  background: var(--bg);
  border-bottom: 1px solid var(--card-border);
  transition: box-shadow .3s;
}
#header.scrolled { box-shadow: 0 2px 20px rgba(0,0,0,.08); }
.header-inner {
  display: flex; align-items: center; justify-content: space-between;
  height: 72px; max-width: 1200px; margin: 0 auto; padding: 0 1.5rem;
}
.header-logo { height: 48px; border-radius: 8px; }
.nav-links { display: flex; gap: 0.25rem; align-items: center; }
.nav-link {
  padding: 0.5rem 1rem; border-radius: 999px; font-weight: 600; font-size: 0.9rem;
  color: var(--fg); transition: all .2s; background: none; border: none;
}
.nav-link:hover, .nav-link.active { background: var(--primary); color: var(--primary-fg); }
.nav-cta {
  padding: 0.6rem 1.5rem; border-radius: 999px; font-weight: 700; font-size: 0.9rem;
  background: var(--accent); color: var(--accent-fg); border: none; transition: transform .2s;
}
.nav-cta:hover { transform: scale(1.05); }
.hamburger { display: none; background: none; border: none; font-size: 1.5rem; color: var(--fg); }
.mobile-menu {
  display: none; position: absolute; top: 72px; left: 0; right: 0;
  background: var(--bg); border-bottom: 1px solid var(--card-border);
  padding: 1rem 1.5rem; flex-direction: column; gap: 0.5rem;
}
.mobile-menu.open { display: flex; }

/* ===== HERO ===== */
#hero {
  min-height: 100vh; display: flex; align-items: center; justify-content: center;
  background: linear-gradient(135deg, var(--secondary) 0%, var(--primary) 50%, #3aa89c 100%);
  color: #fff; text-align: center; padding-top: 72px;
}
.hero-date {
  display: inline-block; padding: 0.5rem 1.5rem; border-radius: 999px;
  background: rgba(255,255,255,.15); backdrop-filter: blur(10px);
  font-weight: 600; font-size: 0.9rem; margin-bottom: 2rem; letter-spacing: 1px;
}
.hero-title { font-size: clamp(3rem, 8vw, 6rem); font-weight: 900; line-height: 1; margin-bottom: 1rem; }
.hero-subtitle { font-size: clamp(1.1rem, 2.5vw, 1.5rem); opacity: 0.9; max-width: 600px; margin: 0 auto 2.5rem; font-weight: 300; }
.hero-buttons { display: flex; gap: 1rem; justify-content: center; flex-wrap: wrap; }
.btn-primary {
  padding: 0.8rem 2rem; border-radius: 999px; font-weight: 700; border: none;
  background: var(--accent); color: var(--accent-fg); font-size: 1rem; transition: transform .2s;
}
.btn-primary:hover { transform: scale(1.05); }
.btn-outline {
  padding: 0.8rem 2rem; border-radius: 999px; font-weight: 700;
  background: transparent; color: #fff; border: 2px solid rgba(255,255,255,.4);
  font-size: 1rem; transition: all .2s;
}
.btn-outline:hover { background: rgba(255,255,255,.15); border-color: #fff; }
.countdown { display: flex; gap: 2rem; justify-content: center; margin-top: 3rem; }
.cd-item { text-align: center; }
.cd-num { font-size: 2.5rem; font-weight: 900; display: block; }
.cd-label { font-size: 0.75rem; text-transform: uppercase; letter-spacing: 2px; opacity: 0.7; }

/* ===== SECTIONS ===== */
.section-title { font-size: clamp(2rem, 4vw, 3rem); font-weight: 900; margin-bottom: 0.5rem; }
.section-sub { color: var(--muted-fg); font-size: 1.1rem; margin-bottom: 3rem; }

/* ===== PROGRAM ===== */
.filters-bar { display: flex; flex-wrap: wrap; gap: 0.75rem; align-items: center; margin-bottom: 2rem; }
.filter-group { display: flex; flex-direction: column; gap: 0.25rem; }
.filter-group label { font-size: 0.75rem; font-weight: 700; text-transform: uppercase; letter-spacing: 1px; color: var(--muted-fg); }
.filter-select, .filter-input {
  padding: 0.5rem 1rem; border-radius: 999px; border: 1px solid var(--card-border);
  background: var(--card); color: var(--fg); font-size: 0.85rem; min-width: 160px;
}
.filter-select:focus, .filter-input:focus { outline: none; border-color: var(--primary); box-shadow: 0 0 0 3px rgba(42,140,130,.15); }
.event-card {
  background: var(--card); border: 1px solid var(--card-border); border-radius: 1rem;
  padding: 1.5rem; display: flex; gap: 1.5rem; align-items: flex-start;
  margin-bottom: 1rem; transition: transform .2s, box-shadow .2s;
}
.event-card:hover { transform: translateY(-2px); box-shadow: 0 8px 24px rgba(0,0,0,.06); }
.event-time { font-size: 1.5rem; font-weight: 900; color: var(--accent); min-width: 80px; }
.event-body { flex: 1; }
.event-title { font-size: 1.1rem; font-weight: 700; margin-bottom: 0.25rem; }
.event-desc { font-size: 0.9rem; color: var(--muted-fg); margin-bottom: 0.5rem; }
.event-meta { display: flex; gap: 1rem; flex-wrap: wrap; font-size: 0.8rem; color: var(--muted-fg); }
.event-meta span { display: flex; align-items: center; gap: 0.25rem; }
.event-badge {
  padding: 0.25rem 0.75rem; border-radius: 999px; font-size: 0.75rem; font-weight: 600;
  background: rgba(42,140,130,.1); color: var(--primary); align-self: flex-start; white-space: nowrap;
}
.no-results { text-align: center; padding: 3rem; color: var(--muted-fg); }

/* ===== SPEAKERS ===== */
.speakers-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(240px, 1fr)); gap: 1.5rem; }
.speaker-card {
  position: relative; border-radius: 1rem; overflow: hidden; aspect-ratio: 3/4;
  background: var(--secondary); cursor: pointer; transition: transform .2s;
}
.speaker-card:hover { transform: translateY(-4px); }
.speaker-card img {
  width: 100%; height: 100%; object-fit: cover;
  transition: transform .3s; filter: brightness(0.85);
}
.speaker-card:hover img { transform: scale(1.05); }
.speaker-overlay {
  position: absolute; bottom: 0; left: 0; right: 0;
  background: linear-gradient(transparent, rgba(0,0,0,.75));
  padding: 1.5rem; color: #fff;
}
.speaker-name { font-size: 1.2rem; font-weight: 800; }
.speaker-role { font-size: 0.85rem; opacity: 0.8; }

/* ===== ABOUT ===== */
.values-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(260px, 1fr)); gap: 1.5rem; margin-top: 2rem; }
.value-card {
  background: var(--card); border: 1px solid var(--card-border); border-radius: 1rem;
  padding: 2rem; transition: transform .2s, box-shadow .2s;
}
.value-card:hover { transform: translateY(-2px); box-shadow: 0 8px 24px rgba(0,0,0,.06); }
.value-icon { font-size: 2rem; margin-bottom: 1rem; }
.value-title { font-weight: 800; font-size: 1.1rem; margin-bottom: 0.5rem; }
.value-text { font-size: 0.9rem; color: var(--muted-fg); }

/* ===== GET INVOLVED ===== */
.form-tabs { display: flex; gap: 0.5rem; margin-bottom: 2rem; flex-wrap: wrap; justify-content: center; }
.form-tab {
  padding: 0.6rem 1.5rem; border-radius: 999px; font-weight: 600; font-size: 0.9rem;
  background: var(--card); border: 1px solid var(--card-border); color: var(--fg); transition: all .2s;
}
.form-tab.active { background: var(--primary); color: var(--primary-fg); border-color: var(--primary); }
.form-card {
  max-width: 600px; margin: 0 auto; background: var(--card); border: 1px solid var(--card-border);
  border-radius: 1rem; padding: 2rem;
}
.form-group { margin-bottom: 1rem; }
.form-group label { display: block; font-weight: 600; font-size: 0.85rem; margin-bottom: 0.3rem; }
.form-control {
  width: 100%; padding: 0.6rem 1rem; border-radius: var(--radius); border: 1px solid var(--card-border);
  background: var(--bg); color: var(--fg); font-size: 0.9rem;
}
.form-control:focus { outline: none; border-color: var(--primary); box-shadow: 0 0 0 3px rgba(42,140,130,.15); }
textarea.form-control { resize: vertical; min-height: 80px; }
.form-submit {
  width: 100%; padding: 0.75rem; border-radius: 999px; border: none;
  background: var(--primary); color: var(--primary-fg); font-weight: 700; font-size: 1rem;
  transition: transform .2s;
}
.form-submit:hover { transform: scale(1.02); }

/* ===== GALLERY ===== */
.gallery-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(280px, 1fr)); gap: 1rem; }
.gallery-item {
  border-radius: 1rem; overflow: hidden; aspect-ratio: 4/3;
  background: var(--muted); position: relative;
}
.gallery-item img { width: 100%; height: 100%; object-fit: cover; transition: transform .3s; }
.gallery-item:hover img { transform: scale(1.05); }

/* ===== INFO ===== */
.info-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(320px, 1fr)); gap: 2rem; }
.info-card {
  background: var(--card); border: 1px solid var(--card-border); border-radius: 1rem;
  padding: 2rem;
}
.info-card h3 { font-weight: 800; font-size: 1.2rem; margin-bottom: 1rem; }
.faq-item { border-bottom: 1px solid var(--card-border); }
.faq-question {
  width: 100%; padding: 1rem 0; display: flex; justify-content: space-between; align-items: center;
  background: none; border: none; font-weight: 600; font-size: 1rem; color: var(--fg); text-align: left;
}
.faq-question span { transition: transform .2s; font-size: 1.2rem; }
.faq-question.open span { transform: rotate(45deg); }
.faq-answer { padding: 0 0 1rem; color: var(--muted-fg); font-size: 0.9rem; display: none; }
.faq-answer.open { display: block; }

/* ===== CONTACTS ===== */
.organizers-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(280px, 1fr)); gap: 1.5rem; margin-bottom: 3rem; }
.organizer-card {
  background: var(--card); border: 1px solid var(--card-border); border-radius: 1rem;
  padding: 1.5rem; text-align: center;
}
.organizer-avatar {
  width: 80px; height: 80px; border-radius: 50%; background: var(--primary);
  color: var(--primary-fg); display: flex; align-items: center; justify-content: center;
  font-weight: 900; font-size: 1.5rem; margin: 0 auto 1rem;
}
.organizer-name { font-weight: 800; font-size: 1.1rem; }
.organizer-role { font-size: 0.85rem; color: var(--muted-fg); margin-bottom: 0.5rem; }
.organizer-contact { font-size: 0.85rem; color: var(--primary); }

.contact-info-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(300px, 1fr)); gap: 2rem; margin-bottom: 3rem; }
.contact-block h3 { font-weight: 800; font-size: 1.1rem; margin-bottom: 1rem; }
.contact-item { display: flex; align-items: center; gap: 0.75rem; margin-bottom: 0.75rem; font-size: 0.95rem; }
.contact-item .icon { width: 36px; height: 36px; border-radius: 50%; background: rgba(42,140,130,.1); display: flex; align-items: center; justify-content: center; color: var(--primary); flex-shrink: 0; }
.social-item { display: flex; align-items: center; gap: 0.75rem; margin-bottom: 0.75rem; }
.social-item .icon { width: 36px; height: 36px; border-radius: 50%; background: rgba(42,140,130,.1); display: flex; align-items: center; justify-content: center; color: var(--primary); flex-shrink: 0; transition: all .2s; }
.social-item:hover .icon { background: var(--primary); color: var(--primary-fg); }
.social-item .social-handle { font-weight: 600; }
.social-item .social-label { font-size: 0.8rem; color: var(--muted-fg); }

.map-container { border-radius: 1rem; overflow: hidden; height: 350px; border: 1px solid var(--card-border); }
.map-container iframe { width: 100%; height: 100%; border: 0; }

/* ===== PARTNERS ===== */
.partners-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(150px, 1fr)); gap: 1.5rem; margin-bottom: 2rem; }
.partner-logo {
  background: var(--card); border: 1px solid var(--card-border); border-radius: 1rem;
  padding: 2rem; display: flex; align-items: center; justify-content: center;
  font-weight: 800; font-size: 1.2rem; color: var(--muted-fg); aspect-ratio: 16/9;
  transition: transform .2s;
}
.partner-logo:hover { transform: translateY(-2px); }

/* ===== FOOTER ===== */
#footer {
  background: var(--secondary); color: var(--secondary-fg); padding: 3rem 0 1.5rem;
}
.footer-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); gap: 2rem; margin-bottom: 2rem; }
.footer-col h4 { font-weight: 800; margin-bottom: 1rem; font-size: 1rem; }
.footer-col p, .footer-col a { font-size: 0.9rem; color: rgba(242,239,230,.7); display: block; margin-bottom: 0.4rem; transition: color .2s; }
.footer-col a:hover { color: var(--accent); }
.footer-bottom { border-top: 1px solid rgba(255,255,255,.1); padding-top: 1.5rem; text-align: center; font-size: 0.8rem; color: rgba(242,239,230,.4); }

/* ===== PAGE ===== */
.page { display: none; padding-top: 72px; }
.page.active { display: block; }

/* ===== RESPONSIVE ===== */
@media (max-width: 768px) {
  .nav-links { display: none; }
  .hamburger { display: block; }
  .hero-title { font-size: 2.5rem; }
  .countdown { gap: 1rem; }
  .cd-num { font-size: 1.8rem; }
  .event-card { flex-direction: column; }
  .speakers-grid { grid-template-columns: repeat(2, 1fr); }
  .filters-bar { flex-direction: column; align-items: stretch; }
  .filter-select, .filter-input { min-width: auto; }
  .organizers-grid { grid-template-columns: 1fr; }
  .contact-info-grid { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 480px) {
  .speakers-grid { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr; }
  .hero-buttons { flex-direction: column; align-items: center; }
}

/* ===== ANIMATIONS ===== */
.fade-in { opacity: 1; transform: translateY(0); transition: opacity .6s, transform .6s; }
.fade-in.visible { opacity: 1; transform: translateY(0); }