/* ===== CSS Variables — SDG Theme ===== */
:root {
  --sdg-red: #E5243B;
  --sdg-yellow: #DDA63A;
  --sdg-green: #4C9F38;
  --sdg-blue: #26BDE2;
  --sdg-dark-blue: #19486A;
  --sdg-navy: #0B1D3A;
  --sdg-orange: #F36D25;
  --sdg-purple: #6B2D8B;
  --primary-bg: #0B1D3A;
  --primary-bg-light: #0F2847;
  --secondary-bg: #FFFFFF;
  --accent: #F36D25;
  --accent-hover: #E55A15;
  --text-white: #FFFFFF;
  --text-dark: #1A1A2E;
  --text-muted: #B0BEC5;
  --text-muted-dark: #607D8B;
  --border-light: rgba(255,255,255,0.1);
  --border-dark: #E0E0E0;
  --surface-white: #FFFFFF;
  --surface-light: #F5F7FA;
  --surface-card: rgba(255,255,255,0.06);
  --shadow-sm: 0 2px 8px rgba(0,0,0,0.08);
  --shadow-md: 0 4px 24px rgba(0,0,0,0.12);
  --shadow-lg: 0 8px 48px rgba(0,0,0,0.18);
  --radius-sm: 0;
  --radius-md: 0;
  --radius-lg: 0;
  --radius-xl: 0;
  --radius-full: 9999px;
  --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

/* ===== Reset ===== */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; scroll-padding-top: 80px; }
body { font-family: 'Roboto', sans-serif; background: var(--secondary-bg); color: var(--text-dark); line-height: 1.6; overflow-x: hidden; -webkit-font-smoothing: antialiased; }
a { color: inherit; text-decoration: none; }
img { max-width: 100%; display: block; }
ul { list-style: none; }
.container { max-width: 1200px; margin: 0 auto; padding: 0 24px; }
body.menu-open { overflow: hidden; }

.gradient-text {
  background: linear-gradient(135deg, var(--sdg-blue), var(--sdg-green), var(--sdg-yellow), var(--sdg-orange));
  -webkit-background-clip: text; -webkit-text-fill-color: transparent; background-clip: text;
}

/* ===== Buttons ===== */
.btn {
  display: inline-flex; align-items: center; gap: 10px; padding: 14px 32px;
  border-radius: 0; font-family: 'Roboto', sans-serif; font-weight: 700;
  font-size: 15px; text-transform: uppercase; letter-spacing: 0.5px; border: 2px solid transparent;
  cursor: pointer; transition: var(--transition); text-align: center; white-space: nowrap;
}
.btn-primary { background: var(--accent); color: #fff; border-color: var(--accent); }
.btn-primary:hover { background: var(--accent-hover); border-color: var(--accent-hover); transform: translateY(-2px); box-shadow: 0 8px 28px rgba(243, 109, 37, 0.35); }
.btn-outline { background: transparent; color: #fff; border-color: rgba(255,255,255,0.4); }
.btn-outline:hover { background: rgba(255,255,255,0.1); border-color: rgba(255,255,255,0.8); }
.btn-outline-dark { background: transparent; color: var(--primary-bg); border-color: var(--primary-bg); }
.btn-outline-dark:hover { background: var(--primary-bg); color: #fff; }
.btn-lg { padding: 18px 40px; font-size: 16px; }
.btn-full { width: 100%; justify-content: center; }
.btn-register { margin-top: 20px; padding: 12px 28px; font-size: 13px; }

/* ===== SDG Color Bar ===== */
.sdg-bar { display: flex; height: 6px; width: 100%; }
.sdg-bar span { flex: 1; }

/* ===== Navigation ===== */
.navbar { position: fixed; top: 0; left: 0; right: 0; z-index: 1000; padding: 14px 0; transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1); background: transparent; }
.navbar.scrolled { background: rgba(11, 29, 58, 0.98); backdrop-filter: blur(20px); box-shadow: 0 1px 0 rgba(255,255,255,0.06), 0 4px 24px rgba(0,0,0,0.2); padding: 8px 0; }
.nav-container { max-width: 1200px; margin: 0 auto; padding: 0 32px; display: flex; align-items: center; justify-content: space-between; }
.nav-logo { display: flex; align-items: center; gap: 12px; text-decoration: none; }
.nav-logo-img { height: 52px; width: auto; object-fit: contain; transition: transform 0.3s ease; }
.nav-logo:hover .nav-logo-img { transform: scale(1.05); }
.logo-text { display: flex; flex-direction: column; line-height: 1.15; }
.logo-sdg { font-size: 16px; font-weight: 800; color: #fff; text-transform: uppercase; letter-spacing: 1.5px; }
.logo-comp { font-size: 11px; font-weight: 500; color: rgba(255,255,255,0.6); text-transform: uppercase; letter-spacing: 2px; margin-top: 1px; }
.nav-menu { display: flex; align-items: center; gap: 4px; }
.nav-link { padding: 8px 18px; border-radius: 0; font-size: 13px; font-weight: 600; color: rgba(255,255,255,0.7); transition: all 0.25s ease; text-transform: uppercase; letter-spacing: 0.8px; position: relative; }
.nav-link::after { content: ''; position: absolute; bottom: 4px; left: 18px; right: 18px; height: 2px; background: var(--accent); transform: scaleX(0); transition: transform 0.25s ease; }
.nav-link:hover { color: #fff; background: none; }
.nav-link:hover::after { transform: scaleX(1); }
.nav-link.active { color: #fff; }
.nav-link.active::after { transform: scaleX(1); background: var(--sdg-green); }


/* ===== Nav Dropdown ===== */
.nav-dropdown { position: relative; }
.nav-dropdown-trigger { cursor: pointer; display: inline-flex; align-items: center; gap: 6px; }
.nav-dropdown-icon { font-size: 9px; transition: transform 0.25s ease; }
.nav-dropdown:hover .nav-dropdown-icon { transform: rotate(180deg); }
.nav-dropdown-menu { position: absolute; top: calc(100% + 8px); left: 0; min-width: 220px; background: rgba(11, 29, 58, 0.98); backdrop-filter: blur(20px); border: 1px solid rgba(255,255,255,0.1); box-shadow: 0 12px 40px rgba(0,0,0,0.4); padding: 8px 0; opacity: 0; visibility: hidden; transform: translateY(8px); transition: all 0.25s ease; }
.nav-dropdown:hover .nav-dropdown-menu { opacity: 1; visibility: visible; transform: translateY(0); }
.nav-dropdown-menu li { margin: 0; }
.nav-dropdown-menu a { display: flex; align-items: center; gap: 12px; padding: 10px 20px; font-size: 13px; font-weight: 500; color: rgba(255,255,255,0.7); text-transform: uppercase; letter-spacing: 0.5px; transition: all 0.2s ease; }
.nav-dropdown-menu a:hover { color: #fff; background: rgba(255,255,255,0.08); }
.nav-dropdown-menu a.active { color: #fff; background: rgba(255,255,255,0.06); }
.nav-dropdown-menu a i { font-size: 12px; color: var(--sdg-blue); width: 16px; text-align: center; }
.nav-dropdown::after { content: ''; position: absolute; top: 100%; left: 0; right: 0; height: 12px; }

.nav-toggle { display: none; flex-direction: column; gap: 6px; background: none; border: none; cursor: pointer; padding: 8px; z-index: 1001; position: relative; }
.nav-toggle span { width: 24px; height: 2px; background: #fff; border-radius: 2px; transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1); transform-origin: center; }
.nav-toggle.active span:nth-child(1) { transform: translateY(8px) rotate(45deg); }
.nav-toggle.active span:nth-child(2) { opacity: 0; transform: scaleX(0); }
.nav-toggle.active span:nth-child(3) { transform: translateY(-8px) rotate(-45deg); }
.nav-overlay { display: none; position: fixed; inset: 0; background: rgba(0,0,0,0.5); backdrop-filter: blur(4px); z-index: 999; opacity: 0; transition: opacity 0.3s ease; }
.nav-overlay.active { display: block; opacity: 1; }

/* ===== Hero ===== */
.hero { position: relative; min-height: 100vh; display: flex; align-items: center; justify-content: center; background: var(--primary-bg); overflow: hidden; }
.hero-shapes { position: absolute; inset: 0; pointer-events: none; overflow: hidden; }
.hero-shape { position: absolute; border-radius: 50%; opacity: 0.15; }
.hero-shape-1 { width: 600px; height: 600px; background: var(--sdg-blue); top: -200px; right: -100px; animation: float-shape 8s ease-in-out infinite; }
.hero-shape-2 { width: 400px; height: 400px; background: var(--sdg-green); bottom: -150px; left: -100px; animation: float-shape 10s ease-in-out infinite reverse; }
.hero-shape-3 { width: 250px; height: 250px; background: var(--sdg-yellow); top: 30%; left: 15%; animation: float-shape 12s ease-in-out infinite; }
.hero-shape-4 { width: 180px; height: 180px; background: var(--sdg-orange); top: 20%; right: 20%; animation: float-shape 9s ease-in-out infinite reverse; }
@keyframes float-shape { 0%, 100% { transform: translateY(0) scale(1); } 50% { transform: translateY(-30px) scale(1.05); } }
.hero-content { position: relative; z-index: 2; text-align: center; padding: 140px 24px 100px; max-width: 950px; }
.hero-badge { display: inline-flex; align-items: center; gap: 10px; background: rgba(255,255,255,0.08); backdrop-filter: blur(10px); border: 1px solid rgba(255,255,255,0.12); padding: 10px 24px; border-radius: 0; font-size: 13px; font-weight: 500; color: rgba(255,255,255,0.85); margin-bottom: 32px; text-transform: uppercase; letter-spacing: 1px; animation: fadeInUp 0.8s ease; }
.badge-pulse { width: 8px; height: 8px; background: var(--sdg-green); border-radius: 50%; animation: pulse 2s infinite; }
@keyframes pulse { 0%, 100% { opacity: 1; transform: scale(1); } 50% { opacity: 0.5; transform: scale(1.5); } }
.hero-title { font-size: clamp(48px, 8vw, 96px); font-weight: 900; line-height: 1.05; color: #fff; margin-bottom: 24px; text-transform: uppercase; letter-spacing: -1px; animation: fadeInUp 0.8s ease 0.1s both; }
.title-line { display: block; }
.hero-subtitle { font-size: clamp(16px, 2vw, 20px); color: rgba(255,255,255,0.7); max-width: 650px; margin: 0 auto 40px; line-height: 1.7; font-weight: 300; animation: fadeInUp 0.8s ease 0.2s both; }
.hero-details { display: flex; justify-content: center; gap: 32px; margin-bottom: 40px; animation: fadeInUp 0.8s ease 0.3s both; }
.hero-detail { display: flex; align-items: center; gap: 12px; background: rgba(255,255,255,0.06); backdrop-filter: blur(10px); border: 1px solid rgba(255,255,255,0.1); padding: 14px 24px; border-radius: 0; }
.hero-detail i { font-size: 20px; color: var(--sdg-blue); }
.detail-label { display: block; font-size: 11px; text-transform: uppercase; letter-spacing: 1.5px; color: rgba(255,255,255,0.5); font-weight: 500; }
.detail-value { display: block; font-size: 15px; font-weight: 700; color: #fff; }
.hero-actions { display: flex; justify-content: center; gap: 16px; margin-bottom: 48px; animation: fadeInUp 0.8s ease 0.4s both; }
.countdown { display: flex; justify-content: center; gap: 20px; animation: fadeInUp 0.8s ease 0.5s both; }
.countdown-item { text-align: center; }
.countdown-number { display: block; font-size: 32px; font-weight: 800; color: #fff; line-height: 1; min-width: 68px; background: rgba(255,255,255,0.06); border-radius: 0; padding: 16px 12px; border: 1px solid rgba(255,255,255,0.08); }
.countdown-label { display: block; font-size: 10px; text-transform: uppercase; letter-spacing: 2px; color: rgba(255,255,255,0.5); margin-top: 8px; font-weight: 500; }
.scroll-indicator { position: absolute; bottom: 32px; left: 50%; transform: translateX(-50%); display: flex; flex-direction: column; align-items: center; gap: 8px; color: rgba(255,255,255,0.4); font-size: 11px; text-transform: uppercase; letter-spacing: 2px; animation: bounce 2s infinite; }
.scroll-arrow { width: 16px; height: 16px; border-right: 1.5px solid rgba(255,255,255,0.3); border-bottom: 1.5px solid rgba(255,255,255,0.3); transform: rotate(45deg); }
@keyframes bounce { 0%, 100% { transform: translateX(-50%) translateY(0); } 50% { transform: translateX(-50%) translateY(10px); } }
@keyframes fadeInUp { from { opacity: 0; transform: translateY(30px); } to { opacity: 1; transform: translateY(0); } }

/* ===== SDG Goals Banner — Icons Only ===== */
.sdg-goals-banner { background: var(--primary-bg); padding: 24px 0; border-top: 1px solid var(--border-light); border-bottom: 1px solid var(--border-light); }
.sdg-goals-row { display: flex; gap: 8px; justify-content: center; align-items: center; flex-wrap: nowrap; max-width: 1200px; margin: 0 auto; padding: 0 24px; }
.sdg-icon-only { width: 48px; height: 48px; border-radius: 0; object-fit: cover; border: 2px solid rgba(255,255,255,0.2); transition: var(--transition); cursor: pointer; }
.sdg-icon-only:hover { transform: scale(1.15); border-color: #fff; box-shadow: 0 0 16px rgba(255,255,255,0.3); }

/* ===== Sections ===== */
.section { padding: 100px 0; }
.section-dark { background: var(--primary-bg); color: var(--text-white); }
.section-light { background: var(--surface-light); }
.section-header { text-align: center; max-width: 700px; margin: 0 auto 64px; }
.section-tag { display: inline-block; background: rgba(243, 109, 37, 0.1); color: var(--accent); padding: 6px 20px; border-radius: 0; font-size: 12px; font-weight: 700; text-transform: uppercase; letter-spacing: 2px; margin-bottom: 16px; }
.section-dark .section-tag { background: rgba(243, 109, 37, 0.2); }
.section-title { font-size: clamp(32px, 4.5vw, 48px); font-weight: 900; line-height: 1.15; margin-bottom: 16px; text-transform: uppercase; letter-spacing: -0.5px; }
.section-dark .section-title { color: #fff; }
.section-desc { font-size: 17px; color: var(--text-muted-dark); line-height: 1.7; font-weight: 400; }
.section-dark .section-desc { color: var(--text-muted); }

/* ===== About — Centered Logo + Description + Objectives ===== */
.about { background: var(--surface-white); }
.about-logo-centered { text-align: center; margin-bottom: 40px; }
.about-logo-centered .about-logo-large { max-width: 360px; height: auto; margin: 0 auto; }
.about-description-centered { max-width: 900px; margin: 0 auto 56px; text-align: center; }
.about-description-centered p { font-size: 16px; line-height: 1.85; color: var(--text-muted-dark); margin-bottom: 16px; }
.about-description-centered p:last-child { margin-bottom: 0; }
.about-description-centered strong { color: var(--primary-bg); font-weight: 700; }
.about-expandable { max-height: 0; overflow: hidden; transition: max-height 0.5s ease, opacity 0.4s ease; opacity: 0; }
.about-expandable.open { max-height: 600px; opacity: 1; }
.about-more-btn { background: none; border: 2px solid var(--accent); color: var(--accent); padding: 10px 28px; font-size: 14px; font-weight: 700; text-transform: uppercase; letter-spacing: 1px; cursor: pointer; transition: var(--transition); display: inline-flex; align-items: center; gap: 8px; border-radius: 0; margin-top: 8px; }
.about-more-btn:hover { background: var(--accent); color: #fff; }
.about-more-btn.open i { transform: rotate(180deg); }
.about-more-btn i { transition: transform 0.3s ease; }
.about-objectives { display: flex; justify-content: center; align-items: center; flex-wrap: wrap; gap: 16px; max-width: 1100px; margin: 0 auto; }
.about-objective-item { display: flex; align-items: center; gap: 10px; padding: 12px 20px; border-radius: 0; background: var(--surface-light); border: 1px solid var(--border-dark); transition: var(--transition); cursor: pointer; }
.about-objective-item:hover, .about-objective-item.active { transform: translateY(-2px); box-shadow: var(--shadow-sm); border-color: var(--icon-color, var(--primary-bg)); }
.about-objective-icon { width: 36px; height: 36px; border-radius: 0; background: color-mix(in srgb, var(--icon-color, var(--primary-bg)) 12%, transparent); color: var(--icon-color, var(--primary-bg)); display: flex; align-items: center; justify-content: center; font-size: 16px; transition: var(--transition); flex-shrink: 0; }
.about-objective-item:hover .about-objective-icon, .about-objective-item.active .about-objective-icon { background: var(--icon-color, var(--primary-bg)); color: #fff; }
.about-objective-item span { font-size: 14px; font-weight: 700; color: var(--text-dark); text-transform: uppercase; letter-spacing: 0.5px; white-space: nowrap; }
.about-objective-desc { display: none; width: 100%; font-size: 14px; color: var(--text-muted-dark); line-height: 1.6; padding: 16px 20px; background: var(--surface-light); border: 1px solid var(--border-dark); margin-top: 8px; text-align: center; }
.about-objective-desc.show { display: block; animation: fadeInUp 0.3s ease; }

/* ===== SDG Divider ===== */
.sdg-divider { display: flex; height: 4px; width: 100%; }
.sdg-divider span { flex: 1; }
.sdg-divider span:nth-child(1) { background: var(--sdg-red); }
.sdg-divider span:nth-child(2) { background: var(--sdg-yellow); }
.sdg-divider span:nth-child(3) { background: var(--sdg-green); }
.sdg-divider span:nth-child(4) { background: var(--sdg-blue); }
.sdg-divider span:nth-child(5) { background: var(--sdg-orange); }
.sdg-divider span:nth-child(6) { background: var(--sdg-purple); }
.sdg-divider span:nth-child(7) { background: var(--sdg-dark-blue); }

/* ===== Organizers — Two-Column ===== */
.organizers { background: var(--surface-white); }
.organizer-two-col { display: grid; grid-template-columns: 1fr 1.5fr; gap: 64px; align-items: center; background: var(--surface-light); padding: 52px; border-radius: 0; border: 1px solid var(--border-dark); max-width: 1000px; margin: 0 auto; }
.organizer-logo-col { display: flex; align-items: center; justify-content: center; }
.organizer-logo-lg { width: 100%; max-width: 280px; height: auto; margin: 0 auto; display: block; }
.organizer-text-col h3 { font-size: 22px; font-weight: 700; margin-bottom: 4px; color: var(--text-dark); }
.organizer-text-col h4 { font-size: 16px; font-weight: 600; color: var(--accent); margin-bottom: 16px; }
.organizer-text-col p { font-size: 15px; color: var(--text-muted-dark); line-height: 1.7; margin-bottom: 12px; }
.organizer-mission { font-style: italic; color: var(--sdg-blue); font-weight: 500; }

/* ===== How to Participate ===== */
.how-to-participate { background: var(--surface-white); }

/* ===== Guidelines Two-Column ===== */
.guidelines-two-col { display: grid; grid-template-columns: 1fr 1fr; gap: 32px; }
.guidelines-card-light { max-width: 900px; margin: 0 auto 48px; background: var(--surface-light); border: 1px solid var(--border-dark); padding: 40px; }
.guidelines-card-light h3 { font-size: 20px; font-weight: 700; margin-bottom: 24px; color: var(--primary-bg); }
.guidelines-card-light h3 i { color: var(--accent); margin-right: 8px; }
.guidelines-list-light { list-style: none; padding: 0; }
.guidelines-list-light li { padding: 10px 0; font-size: 14px; color: var(--text-muted-dark); border-bottom: 1px solid var(--border-dark); display: flex; align-items: flex-start; gap: 10px; }
.guidelines-list-light li:last-child { border-bottom: none; }
.guidelines-list-light li i { color: var(--sdg-green); margin-top: 3px; flex-shrink: 0; }

/* ===== Eligible Participants ===== */
.eligible-participants { max-width: 800px; margin: 24px auto 0; text-align: center; }
.eligible-title { font-size: 18px; font-weight: 700; margin-bottom: 12px; color: var(--text-dark); text-transform: uppercase; }
.eligible-tags { display: flex; flex-wrap: wrap; justify-content: center; gap: 10px; }
.eligible-tag { display: inline-flex; align-items: center; gap: 8px; padding: 8px 16px; background: var(--surface-light); border: 1px solid var(--border-dark); font-size: 14px; color: var(--text-muted-dark); white-space: nowrap; }
.eligible-tag i { color: var(--sdg-green); }
.eligible-note { font-size: 14px; color: var(--text-muted-dark); margin-top: 12px; }

/* ===== Timeline Horizontal ===== */
.schedule { background: var(--primary-bg); color: #fff; }
.schedule .section-title { color: #fff; }
.timeline-horizontal { position: relative; padding: 40px 0 20px; overflow-x: auto; }
.timeline-track { position: absolute; top: 51px; left: 0; right: 0; height: 3px; background: rgba(255,255,255,0.15); border-radius: 2px; z-index: 1; }
.timeline-items { display: flex; gap: 0; justify-content: space-between; position: relative; min-width: 800px; }
.timeline-h-item { flex: 1; text-align: center; padding: 0 8px; position: relative; }
.timeline-h-dot { width: 22px; height: 22px; background: var(--primary-bg); border: 3px solid var(--sdg-blue); border-radius: 50%; margin: 0 auto 16px; position: relative; z-index: 2; transition: var(--transition); }
.timeline-h-dot.active { background: var(--accent); border-color: var(--accent); box-shadow: 0 0 0 6px rgba(243, 109, 37, 0.25); }
.timeline-h-dot::after { content: ''; position: absolute; top: 50%; left: 100%; width: calc(100% + 4px); height: 3px; background: transparent; transform: translateY(-50%); transition: background 0.3s ease; }
.timeline-h-item:last-child .timeline-h-dot::after { display: none; }
.timeline-h-item:hover .timeline-h-dot { transform: scale(1.3); box-shadow: 0 0 0 8px rgba(38, 189, 226, 0.2), 0 0 20px rgba(38, 189, 226, 0.3); border-color: var(--sdg-blue); background: var(--sdg-blue); }
.timeline-h-item:hover .timeline-h-dot.active { background: var(--accent); border-color: var(--accent); box-shadow: 0 0 0 8px rgba(243, 109, 37, 0.25), 0 0 20px rgba(243, 109, 37, 0.3); }
.timeline-h-item:hover .timeline-h-dot::after { background: var(--sdg-blue); }
.timeline-h-item:hover .timeline-h-content { background: rgba(38, 189, 226, 0.08); border-color: var(--sdg-blue); transform: translateY(-4px); box-shadow: 0 8px 24px rgba(38, 189, 226, 0.15); }
.timeline-h-item.active:hover .timeline-h-content { background: rgba(243, 109, 37, 0.12); border-color: var(--accent); box-shadow: 0 8px 24px rgba(243, 109, 37, 0.2); }
.timeline-h-item.expanded .timeline-h-dot { transform: scale(1.3); background: var(--sdg-blue); border-color: var(--sdg-blue); box-shadow: 0 0 0 8px rgba(38, 189, 226, 0.25), 0 0 24px rgba(38, 189, 226, 0.35); }
.timeline-h-item.expanded .timeline-h-dot.active { background: var(--accent); border-color: var(--accent); box-shadow: 0 0 0 8px rgba(243, 109, 37, 0.25), 0 0 24px rgba(243, 109, 37, 0.35); }
.timeline-h-item.expanded .timeline-h-content { background: rgba(38, 189, 226, 0.1); border-color: var(--sdg-blue); transform: translateY(-4px); box-shadow: 0 8px 28px rgba(38, 189, 226, 0.2); }
.timeline-h-item.expanded.active .timeline-h-content { background: rgba(243, 109, 37, 0.12); border-color: var(--accent); box-shadow: 0 8px 28px rgba(243, 109, 37, 0.25); }
.timeline-h-content { background: var(--surface-card); padding: 16px; border-radius: 0; border: 1px solid var(--border-light); transition: var(--transition); cursor: pointer; }
.timeline-h-item.active .timeline-h-content { border-color: var(--accent); background: rgba(243, 109, 37, 0.08); }
.timeline-h-date { font-size: 11px; font-weight: 700; color: var(--sdg-blue); text-transform: uppercase; letter-spacing: 1px; margin-bottom: 4px; }
.timeline-h-content h3 { font-size: 15px; font-weight: 700; margin-bottom: 4px; color: #fff; }
.timeline-h-content p { font-size: 12px; color: var(--text-muted); }

/* ===== Categories ===== */
.categories { background: var(--surface-white); }
.categories-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; margin-bottom: 64px; }
.category-card { background: var(--surface-light); padding: 32px 20px; border-radius: 0; border: 1px solid var(--border-dark); text-align: center; transition: var(--transition); position: relative; overflow: hidden; }
.category-card::after { content: ''; position: absolute; bottom: 0; left: 0; right: 0; height: 4px; }
.category-card:nth-child(1)::after { background: var(--sdg-red); }
.category-card:nth-child(2)::after { background: var(--sdg-yellow); }
.category-card:nth-child(3)::after { background: var(--sdg-green); }
.category-card:nth-child(4)::after { background: var(--sdg-orange); }
.category-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-md); }
.category-age { font-size: 22px; font-weight: 900; color: var(--primary-bg); margin-bottom: 8px; }
.category-icon { font-size: 36px; margin-bottom: 12px; color: var(--primary-bg); }
.category-card h3 { font-size: 16px; font-weight: 700; margin-bottom: 4px; text-transform: uppercase; }
.category-card p { font-size: 13px; color: var(--text-muted-dark); }
.participation-options { display: grid; grid-template-columns: repeat(2, 1fr); gap: 24px; max-width: 800px; margin: 0 auto; }
.option-card { background: var(--surface-light); padding: 40px 32px; border-radius: 0; border: 2px solid var(--border-dark); text-align: center; transition: var(--transition); position: relative; }
.option-card.featured { border-color: var(--accent); box-shadow: var(--shadow-md); }
.featured-badge { position: absolute; top: -12px; left: 50%; transform: translateX(-50%); background: var(--accent); color: #fff; padding: 6px 20px; border-radius: 0; font-size: 12px; font-weight: 700; text-transform: uppercase; letter-spacing: 1px; }
.option-card h3 { font-size: 20px; font-weight: 700; margin-bottom: 8px; }
.option-price { font-size: 40px; font-weight: 900; color: var(--primary-bg); margin-bottom: 12px; }
.option-price span { font-size: 16px; font-weight: 500; color: var(--text-muted-dark); }
.option-card p { font-size: 14px; color: var(--text-muted-dark); margin-bottom: 16px; }
.option-card ul { text-align: left; margin-bottom: 4px; }
.option-card li { padding: 6px 0; font-size: 14px; color: var(--text-muted-dark); display: flex; align-items: center; gap: 10px; }
.option-card li::before { content: '\f00c'; font-family: 'Font Awesome 6 Free'; font-weight: 900; color: var(--sdg-green); font-size: 14px; }

/* ===== Themes ===== */
.themes { background: var(--primary-bg); }
.themes-grid { display: flex; flex-wrap: wrap; justify-content: center; gap: 12px; margin-bottom: 48px; max-width: 950px; margin-left: auto; margin-right: auto; }
.theme-chip { display: inline-flex; align-items: center; gap: 10px; background: var(--surface-card); border: 1px solid var(--border-light); padding: 12px 22px; border-radius: 0; font-size: 14px; font-weight: 500; color: #fff; transition: var(--transition); cursor: default; }
.theme-chip:hover { border-color: var(--sdg-blue); background: rgba(38, 189, 226, 0.1); transform: translateY(-2px); }
.theme-chip i { font-size: 16px; color: var(--sdg-blue); }
.guidelines-card { background: var(--surface-card); border: 1px solid var(--border-light); border-radius: 0; padding: 40px; width: 100%; }
.guidelines-card h3 { font-size: 20px; font-weight: 700; margin-bottom: 24px; color: #fff; }
.guidelines-card h3 i { color: var(--sdg-blue); margin-right: 8px; }
.guidelines-list li { padding: 12px 0; font-size: 14px; color: var(--text-muted); border-bottom: 1px solid var(--border-light); display: flex; align-items: flex-start; gap: 10px; }
.guidelines-list li:last-child { border-bottom: none; }
.guidelines-list li::before { content: '\f00c'; font-family: 'Font Awesome 6 Free'; font-weight: 900; color: var(--sdg-green); font-size: 14px; line-height: 1.6; flex-shrink: 0; }

/* ===== Prizes ===== */
.prizes { background: var(--surface-white); }
.prizes-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 20px; margin-bottom: 64px; }
.prize-card { background: var(--surface-light); padding: 40px 24px; border-radius: 0; border: 1px solid var(--border-dark); text-align: center; transition: var(--transition); position: relative; overflow: hidden; }
.prize-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-md); }
.prize-card::before { content: ''; position: absolute; top: 0; left: 0; right: 0; height: 4px; }
.prize-card:nth-child(1)::before { background: var(--sdg-yellow); }
.prize-card:nth-child(2)::before { background: #B0BEC5; }
.prize-card:nth-child(3)::before { background: var(--sdg-orange); }
.prize-card:nth-child(4)::before { background: var(--sdg-blue); }
.prize-medal { font-size: 48px; margin-bottom: 16px; }
.prize-card h3 { font-size: 18px; font-weight: 700; margin-bottom: 8px; text-transform: uppercase; }
.prize-value { font-size: 32px; font-weight: 900; color: var(--primary-bg); margin-bottom: 16px; }
.prize-perks { display: flex; flex-direction: column; gap: 8px; }
.perk { display: inline-flex; align-items: center; gap: 6px; padding: 5px 14px; border-radius: 0; font-size: 12px; font-weight: 600; background: rgba(11, 29, 58, 0.06); color: var(--primary-bg); }
.gold-medal { background: rgba(221, 166, 58, 0.12); color: #B8860B; }
.silver-medal { background: rgba(176, 190, 197, 0.2); color: #607D8B; }
.bronze-medal { background: rgba(243, 109, 37, 0.1); color: var(--sdg-orange); }
.additional-awards { background: var(--surface-light); border: 1px solid var(--border-dark); border-radius: 0; padding: 44px; }
.additional-awards h3 { font-size: 22px; font-weight: 700; margin-bottom: 28px; text-align: center; }
.additional-awards h3 i { color: var(--accent); margin-right: 8px; }
.awards-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); gap: 16px; }
.award-item { display: flex; align-items: center; gap: 14px; padding: 14px 18px; border-radius: 0; background: var(--surface-white); border: 1px solid var(--border-dark); font-size: 14px; color: var(--text-muted-dark); }
.award-item .award-icon { color: var(--sdg-blue); font-size: 18px; flex-shrink: 0; }

/* ===== Procedure Horizontal Timeline ===== */
.procedure { background: var(--primary-bg); }
.procedure-timeline { position: relative; padding: 40px 0 20px; overflow-x: auto; }
.procedure-track { position: absolute; top: 57px; left: 0; right: 0; height: 3px; background: rgba(255,255,255,0.15); border-radius: 2px; z-index: 1; }
.procedure-steps { display: flex; gap: 0; position: relative; min-width: 1100px; }
.procedure-step-h { flex: 1; text-align: center; padding: 0 6px; position: relative; }
.step-dot { width: 34px; height: 34px; background: var(--step-color, var(--sdg-blue)); border-radius: 50%; display: flex; align-items: center; justify-content: center; margin: 0 auto 16px; position: relative; z-index: 2; box-shadow: 0 0 0 4px rgba(255,255,255,0.1); transition: var(--transition); }
.step-dot span { color: #fff; font-weight: 800; font-size: 13px; }
.procedure-step-h:hover .step-dot { transform: scale(1.25); box-shadow: 0 0 0 6px rgba(255,255,255,0.15), 0 0 24px var(--step-color, var(--sdg-blue)); }
.procedure-step-h:hover .step-content { background: rgba(255,255,255,0.1); transform: translateY(-4px); box-shadow: 0 8px 24px rgba(0,0,0,0.2); border-color: var(--step-color, var(--sdg-blue)); }
.procedure-step-h.expanded .step-dot { transform: scale(1.25); box-shadow: 0 0 0 8px rgba(255,255,255,0.15), 0 0 24px var(--step-color, var(--sdg-blue)); animation: dot-pulse 1.5s ease-in-out infinite; }
.procedure-step-h.expanded .step-content { background: rgba(255,255,255,0.1); transform: translateY(-4px); box-shadow: 0 8px 24px rgba(0,0,0,0.2); border-color: var(--step-color, var(--sdg-blue)); }
@keyframes dot-pulse { 0%, 100% { box-shadow: 0 0 0 4px rgba(255,255,255,0.1); } 50% { box-shadow: 0 0 0 8px rgba(255,255,255,0.05), 0 0 16px var(--step-color, var(--sdg-blue)); } }
.step-content { background: var(--surface-card); padding: 16px 10px; border-radius: 0; border: 1px solid var(--border-light); transition: var(--transition); cursor: pointer; }
.step-icon { font-size: 20px; color: var(--step-color, var(--sdg-blue)); margin-bottom: 8px; }
.step-content h3 { font-size: 13px; font-weight: 700; margin-bottom: 4px; color: #fff; text-transform: uppercase; letter-spacing: 0.5px; }
.step-content p { font-size: 11px; color: var(--text-muted); line-height: 1.5; }

/* ===== Judging Criteria Creative ===== */
.judging { background: var(--surface-white); }
.judging-creative { max-width: 1100px; margin: 0 auto; position: relative; }
.judging-ring { display: grid; grid-template-columns: repeat(5, 1fr); gap: 20px; }
.judging-ring-item { text-align: center; padding: 28px 16px; border-radius: 0; background: var(--surface-light); border: 2px solid var(--border-dark); transition: var(--transition); position: relative; overflow: hidden; }
.judging-ring-item::before { content: ''; position: absolute; top: 0; left: 0; right: 0; height: 4px; background: var(--ring-color); }
.judging-ring-item:hover { transform: translateY(-6px); box-shadow: var(--shadow-md); border-color: var(--ring-color); }
.ring-icon { width: 56px; height: 56px; background: var(--ring-color); border-radius: 50%; display: flex; align-items: center; justify-content: center; margin: 0 auto 16px; font-size: 22px; color: #fff; }
.ring-info h4 { font-size: 14px; font-weight: 700; margin-bottom: 6px; text-transform: uppercase; color: var(--text-dark); }
.ring-info p { font-size: 12px; color: var(--text-muted-dark); line-height: 1.5; }

/* ===== Terms ===== */
.terms { background: var(--primary-bg); }
.terms-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 32px; max-width: 1000px; margin: 0 auto; }
.terms-list { list-style: none; padding: 0; }
.terms-list li { padding: 14px 0; font-size: 14px; color: var(--text-muted); border-bottom: 1px solid var(--border-light); display: flex; align-items: flex-start; gap: 12px; }
.terms-list li:last-child { border-bottom: none; }
.terms-list li i { color: var(--sdg-green); margin-top: 3px; flex-shrink: 0; }

/* ===== Registration CTA ===== */
.register { background: var(--surface-light); }
.register-cta { text-align: center; max-width: 700px; margin: 0 auto; padding: 48px 0; }
.register-cta .section-tag { margin-bottom: 16px; }
.register-cta .section-title { margin-bottom: 16px; }
.register-cta .section-desc { margin-bottom: 32px; }
.cta-buttons { display: flex; justify-content: center; gap: 16px; flex-wrap: nowrap; }
.cta-buttons .btn { border-radius: 0; flex-shrink: 0; }

/* ===== Partners ===== */
.partners { background: var(--surface-light); }
.partners-grid { display: flex; justify-content: center; gap: 48px; align-items: center; flex-wrap: wrap; }
.partner-card { text-align: center; padding: 32px; background: var(--surface-white); border-radius: 0; border: 1px solid var(--border-dark); transition: var(--transition); min-width: 280px; }
.partner-card:hover { transform: translateY(-4px); box-shadow: var(--shadow-md); }
.partner-logo { max-height: 80px; max-width: 200px; width: auto; margin: 0 auto 12px; object-fit: contain; }
.partner-card p { font-size: 14px; font-weight: 600; color: var(--text-muted-dark); }

/* ===== Footer ===== */
.footer { background: #061225; color: rgba(255,255,255,0.7); padding: 60px 0 0; }
.footer-grid { display: grid; grid-template-columns: 2fr 1fr 1fr; gap: 48px; padding-bottom: 40px; border-bottom: 1px solid rgba(255,255,255,0.08); }
.footer-logos { display: flex; align-items: center; gap: 24px; margin-bottom: 20px; }
.footer-logo-item { display: flex; align-items: center; }
.footer-logo { height: auto; margin-bottom: 0; filter: brightness(0) invert(1); opacity: 0.9; }
.footer-logo-sdg { width: 80px; }
.footer-logo-cregu { width: 90px; }
.footer-logo-divider { width: 1px; height: 50px; background: rgba(255,255,255,0.2); flex-shrink: 0; }
.footer-brand p { margin-top: 12px; font-size: 14px; line-height: 1.7; color: rgba(255,255,255,0.5); }
.hashtag { color: var(--sdg-orange); font-weight: 700; font-size: 16px !important; margin-top: 8px !important; }
.footer-links h4, .footer-contact h4 { color: #fff; font-size: 14px; font-weight: 700; margin-bottom: 16px; text-transform: uppercase; letter-spacing: 1px; }
.footer-links li { margin-bottom: 10px; }
.footer-links a { font-size: 14px; color: rgba(255,255,255,0.5); transition: var(--transition); }
.footer-links a:hover { color: #fff; }
.footer-contact p { font-size: 14px; color: rgba(255,255,255,0.5); line-height: 1.7; }
.footer-bottom { padding: 24px 0; text-align: center; }
.footer-bottom p { font-size: 13px; color: rgba(255,255,255,0.3); }
.footer .logo-text { color: #fff; }

/* ===== WhatsApp Chat Button ===== */
.whatsapp-btn {
  position: fixed;
  bottom: 32px;
  right: 90px;
  width: 56px;
  height: 56px;
  background: #25D366;
  color: #fff;
  border-radius: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 28px;
  z-index: 999;
  box-shadow: 0 4px 20px rgba(37, 211, 102, 0.4);
  transition: var(--transition);
  text-decoration: none;
}
.whatsapp-btn:hover {
  background: #1EBE57;
  transform: translateY(-4px) scale(1.05);
  box-shadow: 0 8px 32px rgba(37, 211, 102, 0.5);
  color: #fff;
}

/* ===== Back to Top Button ===== */
.back-to-top {
  position: fixed;
  bottom: 32px;
  right: 32px;
  width: 48px;
  height: 48px;
  border-radius: 0;
  background: var(--accent);
  color: #fff;
  border: none;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 18px;
  z-index: 999;
  opacity: 0;
  visibility: hidden;
  transform: translateY(20px);
  transition: all 0.35s cubic-bezier(0.4, 0, 0.2, 1);
  box-shadow: 0 4px 16px rgba(243, 109, 37, 0.3);
}
.back-to-top.visible {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}
.back-to-top:hover {
  background: var(--accent-hover);
  transform: translateY(-4px);
  box-shadow: 0 8px 28px rgba(243, 109, 37, 0.45);
}
.back-to-top:active {
  transform: translateY(0);
}

/* ===== Responsive ===== */
@media (max-width: 1024px) {
  .categories-grid { grid-template-columns: repeat(2, 1fr); }
  .prizes-grid { grid-template-columns: repeat(2, 1fr); }
  .judging-ring { grid-template-columns: repeat(3, 1fr); }
  .organizer-two-col { grid-template-columns: 1fr; gap: 32px; text-align: center; }
  .organizer-text-col { text-align: left; }
  .organizer-logo-lg { max-width: 180px; }
}
@media (max-width: 768px) {
  .nav-toggle { display: flex; }
  .nav-menu { position: fixed; top: 0; right: 0; width: 300px; height: 100vh; background: var(--primary-bg); flex-direction: column; align-items: stretch; padding: 100px 24px 32px; box-shadow: -4px 0 32px rgba(0,0,0,0.5); transform: translateX(100%); transition: transform 0.35s cubic-bezier(0.4, 0, 0.2, 1); gap: 2px; z-index: 1000; }
  .nav-menu.active { transform: translateX(0); }
  .nav-link { color: rgba(255,255,255,0.75); padding: 12px 16px; border-radius: 0; }
  .nav-link:hover { background: rgba(255,255,255,0.08); }
  .nav-cta { text-align: center; margin-top: 8px; }
  .hero-details { flex-direction: column; align-items: center; gap: 12px; }
  .hero-actions { flex-direction: column; align-items: center; }
  .countdown { gap: 12px; }
  .countdown-number { font-size: 24px; min-width: 56px; padding: 12px 8px; }
  .categories-grid { grid-template-columns: 1fr; }
  .prizes-grid { grid-template-columns: 1fr; }
  .judging-ring { grid-template-columns: 1fr; }
  .participation-options { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr; gap: 32px; }
  .section { padding: 64px 0; }
  .guidelines-card { padding: 24px; }
  .additional-awards { padding: 24px; }
  .partners-grid { flex-direction: column; }
  .timeline-items { min-width: 600px; }
  .procedure-steps { min-width: 900px; }
  .nav-logo-img { height: 44px; }
  .logo-sdg { font-size: 14px; letter-spacing: 1px; }
  .logo-comp { font-size: 10px; letter-spacing: 1.5px; }
  .nav-link { padding: 12px 16px; font-size: 13px; }
  .nav-link::after { display: none; }
  .nav-dropdown { width: 100%; }
  .nav-dropdown-menu { position: static; opacity: 1; visibility: visible; transform: none; background: rgba(255,255,255,0.05); border: none; box-shadow: none; padding: 0 0 0 16px; max-height: 0; overflow: hidden; transition: max-height 0.3s ease; }
  .nav-dropdown.open .nav-dropdown-menu { max-height: 200px; }
  .nav-dropdown-icon { font-size: 10px; }
  .nav-dropdown.open .nav-dropdown-icon { transform: rotate(180deg); }
  .nav-dropdown-menu a { padding: 8px 16px; font-size: 12px; }
  .whatsapp-btn { bottom: 20px; right: 76px; width: 48px; height: 48px; font-size: 24px; }
  .back-to-top { bottom: 20px; right: 20px; width: 42px; height: 42px; font-size: 16px; }
  .about-description-centered p { font-size: 14px; }
  .about-objectives { gap: 8px; }
  .about-objective-item { padding: 8px 14px; gap: 8px; }
  .about-objective-item span { font-size: 12px; }
  .about-logo-centered .about-logo-large { max-width: 200px; }
  .footer-logos { flex-direction: row; gap: 16px; justify-content: center; }
  .footer-logo-divider { width: 40px; height: 1px; }
  .sdg-goals-row { flex-wrap: wrap; justify-content: center; }
  .sdg-icon-only { width: 36px; height: 36px; }
  .cta-buttons { flex-wrap: wrap; justify-content: center; }
  .terms-grid { grid-template-columns: 1fr; gap: 0; }
  .about-objective-desc { font-size: 13px; padding: 12px 16px; }
  .how-to-grid { grid-template-columns: 1fr !important; }
  .guidelines-two-col { grid-template-columns: 1fr; gap: 16px; }
  .eligible-tags { flex-direction: column; align-items: center; }
  .eligible-tag { white-space: normal; text-align: left; }
}
@media (max-width: 480px) {
  .hero-title { font-size: 36px; }
}



/* ===== Animations on scroll ===== */
.fade-in { opacity: 0; transform: translateY(24px); transition: opacity 0.6s ease, transform 0.6s ease; }
.fade-in.visible { opacity: 1; transform: translateY(0); }