/* ===================================================================
   2026 SCNU OSS·AI 해커톤 공식 웹사이트 스타일시트 (style.css)
   Clean Monochromatic Blue Palette & Minimal Aesthetics
   =================================================================== */

/* 1. ROOT VARIABLES & THEME SYSTEM */
:root {
  /* Color Palette - Dark Theme (Default) */
  --bg-primary: #0b0f19;
  --bg-secondary: #111827;
  --bg-tertiary: #1e293b;
  --bg-glass: rgba(17, 24, 39, 0.8);
  --bg-glass-strong: rgba(22, 30, 49, 0.9);
  --bg-glass-subtle: rgba(255, 255, 255, 0.03);

  --text-primary: #f8fafc;
  --text-secondary: #94a3b8;
  --text-muted: #64748b;
  --text-inverse: #0f172a;

  /* Blue Monochrome Point Colors */
  --accent-blue: #38bdf8;
  --accent-primary: #2563eb;
  --accent-deep: #1d4ed8;
  --accent-sky: #60a5fa;
  --accent-cyan: #0ea5e9;

  --gradient-brand: linear-gradient(135deg, #38bdf8 0%, #2563eb 60%, #1d4ed8 100%);
  --gradient-sponsor: linear-gradient(135deg, rgba(56, 189, 248, 0.12) 0%, rgba(37, 99, 235, 0.12) 100%);
  --gradient-blue: linear-gradient(135deg, #0284c7 0%, #38bdf8 100%);
  --gradient-card: linear-gradient(180deg, rgba(30, 41, 59, 0.6) 0%, rgba(15, 23, 42, 0.85) 100%);
  --gradient-podium-first: linear-gradient(180deg, rgba(37, 99, 235, 0.2) 0%, rgba(15, 23, 42, 0.95) 100%);

  --border-subtle: rgba(255, 255, 255, 0.08);
  --border-focus: rgba(56, 189, 248, 0.5);
  --border-glass: rgba(255, 255, 255, 0.1);
  --border-blue: rgba(56, 189, 248, 0.35);

  --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.2);
  --shadow-md: 0 8px 24px rgba(0, 0, 0, 0.35);
  --shadow-lg: 0 16px 40px rgba(0, 0, 0, 0.5);
  --shadow-glow-blue: 0 0 35px rgba(56, 189, 248, 0.2);

  --radius-sm: 4px;
  --radius-md: 7px;
  --radius-lg: 10px;
  --radius-xl: 14px;
  --radius-full: 9999px;

  --transition-fast: 0.2s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-normal: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-bounce: 0.5s cubic-bezier(0.34, 1.56, 0.64, 1);

  --container-max-w: 1200px;
}

/* Light Theme Variables */
[data-theme="light"] {
  --bg-primary: #f8fafc;
  --bg-secondary: #ffffff;
  --bg-tertiary: #f1f5f9;
  --bg-glass: rgba(255, 255, 255, 0.88);
  --bg-glass-strong: rgba(255, 255, 255, 0.96);
  --bg-glass-subtle: rgba(0, 0, 0, 0.02);

  --text-primary: #0f172a;
  --text-secondary: #475569;
  --text-muted: #64748b;
  --text-inverse: #f8fafc;

  --border-subtle: rgba(0, 0, 0, 0.08);
  --border-glass: rgba(0, 0, 0, 0.08);
  --border-blue: rgba(37, 99, 235, 0.25);

  --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.05);
  --shadow-md: 0 8px 24px rgba(148, 163, 184, 0.2);
  --shadow-lg: 0 16px 40px rgba(148, 163, 184, 0.25);
  --shadow-glow-blue: 0 0 30px rgba(37, 99, 235, 0.15);
  --gradient-card: linear-gradient(180deg, rgba(255, 255, 255, 0.9) 0%, rgba(241, 245, 249, 0.95) 100%);
  --gradient-sponsor: linear-gradient(135deg, rgba(56, 189, 248, 0.06) 0%, rgba(37, 99, 235, 0.06) 100%);
  --gradient-podium-first: linear-gradient(180deg, rgba(37, 99, 235, 0.08) 0%, rgba(255, 255, 255, 0.95) 100%);
}

/* 2. BASE STYLES & RESET */
*, *::before, *::after {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  font-size: 16px;
  -webkit-tap-highlight-color: transparent;
}

body {
  font-family: 'Pretendard', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  background-color: var(--bg-primary);
  color: var(--text-primary);
  line-height: 1.6;
  overflow-x: hidden;
  position: relative;
  transition: background-color var(--transition-normal), color var(--transition-normal);
}

/* Background Canvas */
#bg-canvas {
  position: fixed;
  top: 0;
  left: 0;
  width: 100vw;
  height: 100vh;
  pointer-events: none;
  z-index: 0;
  opacity: 0.45;
}

/* Typography Utilities */
h1, h2, h3, h4, h5, h6 {
  font-family: 'Outfit', 'Pretendard', sans-serif;
  font-weight: 700;
  color: var(--text-primary);
  line-height: 1.25;
}

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

ul {
  list-style: none;
}

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

button, input, select, textarea {
  font-family: inherit;
  font-size: inherit;
  border: none;
  outline: none;
}

/* Lucide Icon Base Styles */
svg.lucide, [data-lucide] {
  display: inline-block;
  vertical-align: middle;
  width: 1.15em;
  height: 1.15em;
  stroke-width: 2.2;
}

.stat-icon svg.lucide, .card-icon-box svg.lucide, .box-icon svg.lucide, .perk-icon svg.lucide, .contact-avatar svg.lucide {
  width: 26px;
  height: 26px;
}

.medal-icon svg.lucide {
  width: 32px;
  height: 32px;
}

.modal-icon svg.lucide {
  width: 26px;
  height: 26px;
}

.trophy-crown svg.lucide {
  width: 30px;
  height: 30px;
}

/* General Layout Containers */
.container {
  width: 100%;
  max-width: var(--container-max-w);
  margin: 0 auto;
  padding: 0 1.5rem;
  position: relative;
  z-index: 1;
}

.section {
  padding: 5.5rem 0;
  position: relative;
  z-index: 1;
}

.text-center {
  text-align: center;
}

.d-none {
  display: none !important;
}

.w-100 {
  width: 100%;
}

/* Gradient & Highlight Text */
.gradient-text {
  background: var(--gradient-brand);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  display: inline-block;
}

.highlight-blue {
  color: var(--accent-blue) !important;
  font-weight: 600;
}

/* Subtle Blue Glowing Background Orbs */
.glow-orb {
  position: absolute;
  border-radius: 50%;
  filter: blur(100px);
  pointer-events: none;
  z-index: 0;
}

.orb-1 {
  width: 450px;
  height: 450px;
  background: radial-gradient(circle, rgba(56, 189, 248, 0.15) 0%, rgba(37, 99, 235, 0) 70%);
  top: 5%;
  left: -50px;
  animation: floatOrb 14s ease-in-out infinite alternate;
}

.orb-2 {
  width: 500px;
  height: 500px;
  background: radial-gradient(circle, rgba(37, 99, 235, 0.12) 0%, rgba(2, 132, 199, 0) 70%);
  top: 25%;
  right: -100px;
  animation: floatOrb 18s ease-in-out infinite alternate-reverse;
}

@keyframes floatOrb {
  0% { transform: translate(0, 0) scale(1); }
  100% { transform: translate(50px, 30px) scale(1.1); }
}

/* 3. SECTION HEADERS */
.section-header {
  margin-bottom: 3.5rem;
}

.section-tag {
  display: inline-block;
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.82rem;
  font-weight: 600;
  letter-spacing: 2px;
  text-transform: uppercase;
  color: var(--accent-blue);
  background: rgba(56, 189, 248, 0.1);
  padding: 0.35rem 1rem;
  border-radius: calc(0.25lh + 0.175rem + 0.5px);
  border: 1px solid rgba(56, 189, 248, 0.25);
  margin-bottom: 1rem;
}

.section-title {
  font-size: 2.3rem;
  letter-spacing: -0.02em;
  margin-bottom: 0.75rem;
}

.section-subtitle {
  font-size: 1.05rem;
  color: var(--text-secondary);
  max-width: 680px;
  margin: 0 auto;
}

/* 4. BUTTONS & BADGES */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.6rem;
  padding: 0.8rem 1.6rem;
  border-radius: var(--radius-md);
  font-weight: 600;
  cursor: pointer;
  transition: all var(--transition-normal);
  text-align: center;
}

.btn-primary {
  background: var(--gradient-brand);
  color: #ffffff;
  box-shadow: 0 4px 20px rgba(37, 99, 235, 0.35);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 25px rgba(37, 99, 235, 0.55);
}

.btn-outline {
  background: var(--bg-glass);
  color: var(--text-primary);
  border: 1px solid var(--border-glass);
  backdrop-filter: blur(10px);
}

.btn-outline:hover {
  background: var(--bg-tertiary);
  border-color: var(--accent-blue);
  color: var(--accent-blue);
  transform: translateY(-2px);
}

.btn-secondary {
  background: var(--bg-tertiary);
  color: var(--text-secondary);
}

.btn-secondary:hover {
  color: var(--text-primary);
  background: var(--border-glass);
}

.btn-lg {
  padding: 1rem 2rem;
  font-size: 1.05rem;
  border-radius: var(--radius-lg);
}

.btn-sm {
  padding: 0.5rem 1rem;
  font-size: 0.85rem;
}

.btn-icon-copy {
  background: var(--bg-tertiary);
  color: var(--text-secondary);
  border: 1px solid var(--border-glass);
  padding: 0.5rem 0.8rem;
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: all var(--transition-fast);
}

.btn-icon-copy:hover {
  color: var(--accent-blue);
  border-color: var(--accent-blue);
}

/* 5. NAVBAR */
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 74px;
  background: var(--bg-glass);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--border-subtle);
  z-index: 1000;
  transition: all var(--transition-fast);
}

.nav-container {
  max-width: var(--container-max-w);
  height: 100%;
  margin: 0 auto;
  padding: 0 1.5rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.logo {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  font-weight: 800;
  font-size: 1.15rem;
  letter-spacing: -0.01em;
  white-space: nowrap;
  flex-shrink: 0;
}

.logo-badge {
  background: var(--gradient-brand);
  color: white;
  font-size: 0.75rem;
  font-weight: 800;
  padding: 0.2rem 0.55rem;
  border-radius: var(--radius-sm);
}

.nav-menu {
  display: flex;
  align-items: center;
  gap: 1.6rem;
  white-space: nowrap;
}

.nav-link {
  font-size: 0.94rem;
  font-weight: 500;
  color: var(--text-secondary);
  transition: color var(--transition-fast);
  position: relative;
  white-space: nowrap;
  display: inline-block;
}

.nav-link:hover, .nav-link.active {
  color: var(--text-primary);
}

.nav-link::after {
  content: '';
  position: absolute;
  bottom: -6px;
  left: 50%;
  width: 0;
  height: 2px;
  background: var(--accent-blue);
  transition: all var(--transition-fast);
  transform: translateX(-50%);
  border-radius: 0.5px;
}

.nav-link:hover::after, .nav-link.active::after {
  width: 100%;
}

.nav-actions {
  display: flex;
  align-items: center;
  gap: 0.85rem;
}

.home-page .nav-apply-btn {
  white-space: nowrap;
}

.theme-btn {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background: var(--bg-tertiary);
  color: var(--text-primary);
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  border: 1px solid var(--border-glass);
  transition: transform var(--transition-fast), background var(--transition-fast);
}

.theme-btn:hover {
  transform: scale(1.08);
}

.mobile-toggle {
  display: none;
  background: transparent;
  color: var(--text-primary);
  font-size: 1.35rem;
  cursor: pointer;
}

/* 6. HERO SECTION */
.hero-section {
  padding-top: 8.5rem;
  padding-bottom: 4.5rem;
  position: relative;
  overflow: hidden;
}

.hero-container {
  display: grid;
  grid-template-columns: 1.15fr 0.85fr;
  gap: 3.5rem;
  align-items: center;
}

/* Hero Host & Sponsor Brand Cards */
.hero-host-bar {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  margin-bottom: 1.25rem;
  flex-wrap: wrap;
}

.hero-brand-card {
  background: rgba(255, 255, 255, 0.95);
  border: 1px solid var(--border-blue);
  border-radius: var(--radius-sm);
  padding: 0.35rem 0.85rem;
  height: 38px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 2px 10px rgba(0, 0, 0, 0.12);
  transition: all var(--transition-fast);
}

.hero-brand-card.genspark-card {
  background: #050811;
  padding: 0 0.6rem;
  overflow: hidden;
}

.hero-brand-card:hover {
  transform: translateY(-2px);
  border-color: var(--accent-blue);
  box-shadow: 0 4px 14px rgba(56, 189, 248, 0.3);
}

.hero-brand-logo {
  height: 22px;
  width: auto;
  max-width: 140px;
  object-fit: contain;
  display: block;
}

.hero-brand-card.genspark-card .hero-brand-logo {
  height: 26px;
}

.hero-badge-wrap {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  flex-wrap: wrap;
  margin-bottom: 1.5rem;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
  padding: 0 1.1rem;
  height: 38px;
  border-radius: 9.5px;
  background: rgba(37, 99, 235, 0.12);
  border: 1px solid rgba(37, 99, 235, 0.3);
  color: var(--accent-blue);
  font-size: 0.88rem;
  font-weight: 600;
  white-space: nowrap;
}

.pulse-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--accent-blue);
  box-shadow: 0 0 0 0 rgba(56, 189, 248, 0.7);
  animation: pulseAnim 1.8s infinite;
}

@keyframes pulseAnim {
  0% { box-shadow: 0 0 0 0 rgba(56, 189, 248, 0.7); }
  70% { box-shadow: 0 0 0 8px rgba(56, 189, 248, 0); }
  100% { box-shadow: 0 0 0 0 rgba(56, 189, 248, 0); }
}

.hero-title {
  font-size: 3rem;
  letter-spacing: -0.03em;
  margin-bottom: 1.25rem;
  line-height: 1.25;
}

.hero-title-light {
  font-family: 'Pretendard', sans-serif;
  font-size: 0.8em;
  font-weight: 300;
  color: var(--text-primary);
  display: inline-block;
  letter-spacing: -0.01em;
}

.hero-title-bold {
  font-family: 'Outfit', 'Pretendard', sans-serif;
  font-size: 1.2em;
  font-weight: 700;
  display: inline-block;
  letter-spacing: -0.03em;
}

.hero-desc {
  font-size: 1.12rem;
  color: var(--text-secondary);
  margin-bottom: 2rem;
  line-height: 1.7;
}

/* Countdown Card */
.countdown-card {
  background: var(--bg-glass-strong);
  backdrop-filter: blur(14px);
  border: 1px solid var(--border-glass);
  border-radius: var(--radius-lg);
  padding: 1.25rem 1.5rem;
  margin-bottom: 2rem;
  box-shadow: var(--shadow-md);
}

.countdown-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 1rem;
}

.countdown-title {
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--text-secondary);
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.badge-live {
  font-size: 0.75rem;
  font-weight: 700;
  padding: 0.2rem 0.6rem;
  border-radius: calc(0.25lh + 0.1rem + 0.5px);
  background: rgba(56, 189, 248, 0.15);
  color: var(--accent-blue);
  border: 1px solid rgba(56, 189, 248, 0.35);
}

.timer-grid {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.5rem;
}

.timer-unit {
  flex: 1;
  background: var(--bg-tertiary);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  padding: 0.6rem 0.4rem;
  text-align: center;
}

.timer-val {
  display: block;
  font-family: 'JetBrains Mono', 'Outfit', monospace;
  font-size: 1.8rem;
  font-weight: 800;
  color: var(--accent-blue);
  line-height: 1;
  margin-bottom: 0.25rem;
}

.timer-lbl {
  display: block;
  font-size: 0.65rem;
  font-weight: 600;
  letter-spacing: 1px;
  color: var(--text-muted);
}

.timer-colon {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--text-muted);
}

/* Next schedule card */
.next-schedule-content {
  display: grid;
  grid-template-columns: minmax(220px, 0.85fr) minmax(0, 1.65fr);
  gap: 1.25rem;
  align-items: stretch;
}

.next-schedule-date,
.next-schedule-detail {
  border: 1px solid var(--border-subtle);
  background: var(--bg-tertiary);
  border-radius: var(--radius-md);
  padding: 1rem 1.15rem;
}

.next-schedule-date {
  display: flex;
  flex-direction: column;
  justify-content: center;
  gap: 0.35rem;
}

.next-schedule-day {
  color: var(--accent-primary);
  font-size: 1.08rem;
  font-weight: 750;
}

.next-schedule-time {
  color: var(--text-secondary);
  font-size: 0.82rem;
  font-weight: 600;
}

.next-schedule-detail {
  display: flex;
  flex-direction: column;
  justify-content: center;
}

.next-schedule-name {
  display: flex;
  align-items: center;
  gap: 0.45rem;
  color: var(--text-primary);
  font-size: 0.98rem;
  font-weight: 700;
}

.next-schedule-name svg {
  width: 18px;
  height: 18px;
  color: var(--accent-primary);
}

.next-schedule-detail p {
  margin: 0.42rem 0 0;
  color: var(--text-secondary);
  font-size: 0.83rem;
  line-height: 1.6;
}

.next-schedule-badge {
  color: var(--accent-primary);
  background: rgba(56, 189, 248, 0.1);
  border-color: rgba(56, 189, 248, 0.35);
}

.hero-buttons {
  display: flex;
  gap: 1rem;
  margin-bottom: 2rem;
  flex-wrap: wrap;
}

.hero-quick-info {
  display: flex;
  flex-direction: column;
  gap: 0.6rem;
  font-size: 0.95rem;
  color: var(--text-secondary);
  border-top: 1px solid var(--border-subtle);
  padding-top: 1.25rem;
}

.quick-item {
  display: flex;
  align-items: center;
  gap: 0.6rem;
}

.quick-item svg.lucide {
  color: var(--accent-blue);
}

/* Voxel Art Card Visual */
.hero-visual {
  position: relative;
}

.voxel-card-wrapper {
  transition: all var(--transition-normal);
}

.voxel-card {
  position: relative;
  background: var(--bg-glass-strong);
  border: 1px solid var(--border-glass);
  border-radius: var(--radius-xl);
  padding: 1rem;
  box-shadow: var(--shadow-lg), var(--shadow-glow-blue);
  overflow: visible;
  transition: all var(--transition-normal);
}

.voxel-card:hover {
  border-color: var(--accent-blue);
  box-shadow: 0 16px 45px rgba(0, 0, 0, 0.4), 0 0 35px rgba(56, 189, 248, 0.35);
  transform: translateY(-4px);
}

.voxel-img {
  width: 100%;
  height: auto;
  border-radius: var(--radius-lg);
  object-fit: cover;
  box-shadow: var(--shadow-md);
  transition: all var(--transition-normal);
}

.voxel-card:hover .voxel-img {
  filter: brightness(1.05) contrast(1.02);
}

/* Floating Badges */
.floating-badge {
  position: absolute;
  display: flex;
  align-items: center;
  gap: 0.85rem;
  background: var(--bg-glass-strong);
  backdrop-filter: blur(16px);
  border: 1px solid var(--border-blue);
  border-radius: var(--radius-lg);
  padding: 0.85rem 1.2rem;
  box-shadow: var(--shadow-lg);
  z-index: 10;
}

.float-sponsor-logo {
  height: 26px;
  width: auto;
}

.float-sponsor-tag {
  display: inline-block;
  font-size: 0.85rem;
  font-weight: 700;
  color: var(--accent-blue);
  letter-spacing: -0.01em;
  white-space: nowrap;
}

.floating-badge strong {
  display: block;
  font-size: 0.95rem;
  color: var(--text-primary);
}

.floating-badge p {
  font-size: 0.78rem;
  color: var(--text-secondary);
  margin: 0;
}

.badge-top-right {
  top: -20px;
  right: -25px;
}

.badge-bottom-left {
  bottom: -20px;
  left: -25px;
}

.badge-bottom-left svg.lucide {
  color: var(--accent-blue);
}

.float-anim-1 {
  animation: floatCard1 4s ease-in-out infinite;
}

.float-anim-2 {
  animation: floatCard2 4.5s ease-in-out infinite 0.5s;
}

@keyframes floatCard1 {
  0%, 100% { transform: translateY(0px); }
  50% { transform: translateY(-10px); }
}

@keyframes floatCard2 {
  0%, 100% { transform: translateY(0px); }
  50% { transform: translateY(10px); }
}

/* 7. STATS SECTION */
.stats-section {
  padding: 2rem 0;
  position: relative;
  z-index: 2;
  margin-top: -2rem;
}

.stats-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1.5rem;
}

.stat-card {
  background: var(--bg-glass-strong);
  backdrop-filter: blur(12px);
  border: 1px solid var(--border-glass);
  border-radius: var(--radius-lg);
  padding: 1.5rem;
  display: flex;
  align-items: center;
  gap: 1.2rem;
  box-shadow: var(--shadow-md);
  transition: transform var(--transition-fast), border-color var(--transition-fast);
}

.stat-card:hover {
  transform: translateY(-4px);
  border-color: var(--accent-blue);
}

.stat-icon {
  width: 50px;
  height: 50px;
  border-radius: var(--radius-md);
  background: rgba(56, 189, 248, 0.12);
  color: var(--accent-blue);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.stat-number {
  font-family: 'Outfit', sans-serif;
  font-size: 2rem;
  font-weight: 800;
  line-height: 1;
  color: var(--text-primary);
  margin-bottom: 0.25rem;
}

.stat-unit {
  font-size: 1.1rem;
  font-weight: 600;
  color: var(--accent-blue);
  margin-left: 0.2rem;
}

.stat-label {
  font-size: 0.85rem;
  color: var(--text-secondary);
}

/* 8. OFFICIAL SPONSOR SECTION (GENSPARK.AI) */
.sponsor-section {
  padding: 4.5rem 0;
}

.sponsor-highlight-card {
  position: relative;
  background: var(--gradient-sponsor);
  border: 1.5px solid var(--border-blue);
  border-radius: var(--radius-xl);
  padding: 3.5rem 3rem;
  box-shadow: var(--shadow-lg), var(--shadow-glow-blue);
  backdrop-filter: blur(16px);
  overflow: hidden;
}

.sponsor-glow-effect {
  position: absolute;
  top: -100px;
  right: -100px;
  width: 350px;
  height: 350px;
  background: radial-gradient(circle, rgba(56, 189, 248, 0.2) 0%, rgba(37, 99, 235, 0) 70%);
  pointer-events: none;
}

.sponsor-header {
  text-align: center;
  max-width: 800px;
  margin: 0 auto 2.5rem;
}

.sponsor-badge-top {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.82rem;
  font-weight: 700;
  color: var(--accent-blue);
  background: rgba(56, 189, 248, 0.12);
  border: 1px solid rgba(56, 189, 248, 0.35);
  padding: 0.4rem 1.2rem;
  border-radius: calc(0.25lh + 0.2rem + 0.5px);
  margin-bottom: 1.2rem;
  letter-spacing: 1px;
}

.sponsor-title {
  font-size: 2.2rem;
  margin-bottom: 1rem;
}

.sponsor-desc {
  font-size: 1.05rem;
  color: var(--text-secondary);
  line-height: 1.7;
}

.sponsor-logo-banner {
  display: flex;
  justify-content: center;
  margin-bottom: 2.5rem;
}

.sponsor-logo-box {
  background: var(--bg-glass-strong);
  border: 1px solid var(--border-glass);
  border-radius: var(--radius-xl);
  padding: 1.75rem 3rem;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 1rem;
  box-shadow: var(--shadow-md);
  transition: all var(--transition-normal);
}

.sponsor-logo-box:hover {
  transform: translateY(-4px);
  border-color: var(--accent-blue);
  box-shadow: var(--shadow-glow-blue);
}

.sponsor-main-logo {
  height: 52px;
  width: auto;
  object-fit: contain;
}

.sponsor-site-btn {
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--accent-blue);
  display: flex;
  align-items: center;
  gap: 0.4rem;
}

.sponsor-perks-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.75rem;
}

.perk-card {
  background: var(--bg-glass-strong);
  border: 1px solid var(--border-glass);
  border-radius: var(--radius-lg);
  padding: 1.8rem;
  transition: all var(--transition-normal);
}

.perk-card:hover {
  transform: translateY(-4px);
  border-color: var(--accent-blue);
}

.perk-icon {
  width: 48px;
  height: 48px;
  border-radius: var(--radius-md);
  background: rgba(56, 189, 248, 0.12);
  color: var(--accent-blue);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 1.25rem;
}

.perk-card h3 {
  font-size: 1.2rem;
  margin-bottom: 0.6rem;
}

.perk-card p {
  font-size: 0.92rem;
  color: var(--text-secondary);
  line-height: 1.6;
}

/* 9. OVERVIEW SECTION */
.overview-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 2rem;
}

.overview-card {
  background: var(--bg-glass-strong);
  border: 1px solid var(--border-glass);
  border-radius: var(--radius-xl);
  padding: 2.2rem;
  box-shadow: var(--shadow-md);
  transition: all var(--transition-normal);
  display: flex;
  flex-direction: column;
}

.overview-card:hover {
  transform: translateY(-6px);
  border-color: var(--accent-blue);
  box-shadow: var(--shadow-lg);
}

.card-icon-box {
  width: 54px;
  height: 54px;
  border-radius: var(--radius-lg);
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(56, 189, 248, 0.12);
  color: var(--accent-blue);
  margin-bottom: 1.5rem;
}

.overview-card h3 {
  font-size: 1.35rem;
  margin-bottom: 0.85rem;
}

.overview-card p {
  color: var(--text-secondary);
  font-size: 0.96rem;
  margin-bottom: 1.5rem;
  flex-grow: 1;
}

.feature-list {
  border-top: 1px solid var(--border-subtle);
  padding-top: 1.25rem;
  display: flex;
  flex-direction: column;
  gap: 0.6rem;
}

.feature-list li {
  font-size: 0.88rem;
  color: var(--text-secondary);
  display: flex;
  align-items: center;
  gap: 0.6rem;
}

.feature-list li svg.lucide {
  color: var(--accent-blue);
  width: 1rem;
  height: 1rem;
}

/* 10. TRACKS SECTION */
.tracks-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 2.5rem;
  margin-bottom: 4rem;
}

.track-card {
  position: relative;
  background: var(--bg-glass-strong);
  border: 1px solid var(--border-glass);
  border-radius: var(--radius-xl);
  padding: 2.5rem;
  box-shadow: var(--shadow-lg);
  transition: all var(--transition-normal);
  display: flex;
  flex-direction: column;
}

.track-card:hover {
  border-color: var(--accent-blue);
  box-shadow: var(--shadow-glow-blue);
  transform: translateY(-5px);
}

.track-header {
  margin-bottom: 2rem;
}

.track-pill {
  display: inline-block;
  font-size: 0.8rem;
  font-weight: 700;
  padding: 0.35rem 0.85rem;
  border-radius: calc(0.25lh + 0.175rem + 0.5px);
  background: rgba(56, 189, 248, 0.12);
  color: var(--accent-blue);
  border: 1px solid rgba(56, 189, 248, 0.25);
  margin-bottom: 0.85rem;
}

.track-pill.purple {
  background: rgba(37, 99, 235, 0.15);
  color: var(--accent-sky);
  border-color: rgba(37, 99, 235, 0.3);
}

.track-name {
  font-size: 2rem;
  margin-bottom: 0.5rem;
}

.track-desc {
  color: var(--text-secondary);
  font-size: 0.95rem;
}

.track-details {
  border-top: 1px solid var(--border-subtle);
  border-bottom: 1px solid var(--border-subtle);
  padding: 1.5rem 0;
  margin-bottom: 2rem;
  display: flex;
  flex-direction: column;
  gap: 1rem;
  flex-grow: 1;
}

.detail-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 0.95rem;
}

.detail-key {
  color: var(--text-muted);
  display: flex;
  align-items: center;
  gap: 0.6rem;
}

.detail-key svg.lucide {
  color: var(--accent-blue);
}

.detail-val {
  text-align: right;
}

/* Track Quiz */
.track-quiz-box {
  max-width: 800px;
  margin: 0 auto;
}

.quiz-card {
  background: var(--gradient-card);
  border: 1px solid var(--border-glass);
  border-radius: var(--radius-xl);
  padding: 2.5rem;
  text-align: center;
  box-shadow: var(--shadow-lg);
}

.quiz-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.85rem;
  font-weight: 700;
  color: var(--accent-blue);
  background: rgba(56, 189, 248, 0.12);
  border: 1px solid rgba(56, 189, 248, 0.3);
  padding: 0.35rem 1rem;
  border-radius: calc(0.25lh + 0.175rem + 0.5px);
  margin-bottom: 1rem;
}

.quiz-title {
  font-size: 1.6rem;
  margin-bottom: 0.5rem;
}

.quiz-desc {
  color: var(--text-secondary);
  font-size: 0.95rem;
  margin-bottom: 2rem;
}

.quiz-q {
  font-size: 1.1rem;
  font-weight: 600;
  margin-bottom: 1.5rem;
  color: var(--text-primary);
}

.quiz-options {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1.25rem;
}

.quiz-opt-btn {
  background: var(--bg-secondary);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  padding: 1.4rem;
  text-align: left;
  cursor: pointer;
  transition: all var(--transition-normal);
  display: flex;
  flex-direction: column;
  gap: 0.8rem;
  color: var(--text-primary);
}

.quiz-opt-btn svg.lucide {
  color: var(--accent-blue);
  width: 28px;
  height: 28px;
}

.quiz-opt-btn:hover {
  border-color: var(--accent-blue);
  background: var(--bg-tertiary);
  transform: translateY(-3px);
}

.quiz-result-card {
  padding: 2rem;
  border-radius: var(--radius-lg);
  background: var(--bg-secondary);
  border: 1px solid var(--border-glass);
}

.quiz-result-card h4 {
  font-size: 1.4rem;
  margin-bottom: 0.75rem;
}

.quiz-result-card p {
  color: var(--text-secondary);
  margin-bottom: 1.5rem;
}

/* 11. TIMELINE SECTION */
.timeline-wrapper {
  max-width: 850px;
  margin: 0 auto;
  position: relative;
}

.timeline-wrapper::before {
  content: '';
  position: absolute;
  top: 30px;
  bottom: 30px;
  left: 28px;
  width: 2px;
  background: linear-gradient(180deg, var(--accent-blue) 0%, var(--accent-primary) 100%);
}

.timeline-step {
  display: flex;
  gap: 2rem;
  margin-bottom: 2rem;
  position: relative;
}

.timeline-badge {
  width: 56px;
  height: 56px;
  border-radius: 50%;
  background: var(--bg-secondary);
  border: 2px solid var(--accent-blue);
  color: var(--accent-blue);
  font-family: 'JetBrains Mono', monospace;
  font-size: 1.15rem;
  font-weight: 800;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  box-shadow: 0 0 15px rgba(56, 189, 248, 0.25);
  z-index: 2;
}

.timeline-badge.pulse {
  border-color: var(--accent-blue);
  color: var(--accent-blue);
  box-shadow: 0 0 20px rgba(56, 189, 248, 0.4);
}

.timeline-badge.gold {
  border-color: var(--accent-sky);
  color: var(--accent-sky);
  box-shadow: 0 0 20px rgba(96, 165, 250, 0.4);
}

.timeline-card {
  flex-grow: 1;
  background: var(--bg-glass-strong);
  border: 1px solid var(--border-glass);
  border-radius: var(--radius-lg);
  padding: 1.5rem 1.8rem;
  box-shadow: var(--shadow-md);
  transition: all var(--transition-normal);
}

.timeline-card:hover {
  transform: translateX(6px);
  border-color: var(--accent-blue);
}

.timeline-card.highlight-border {
  border-color: rgba(56, 189, 248, 0.45);
  background: linear-gradient(135deg, rgba(56, 189, 248, 0.08) 0%, rgba(15, 23, 42, 0.9) 100%);
}

.timeline-meta {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 0.6rem;
  flex-wrap: wrap;
  gap: 0.5rem;
}

.timeline-date {
  font-size: 0.88rem;
  font-weight: 600;
  color: var(--accent-blue);
  display: flex;
  align-items: center;
  gap: 0.4rem;
}

.timeline-date.red-date {
  color: var(--accent-sky);
}

.badge-stage {
  font-size: 0.75rem;
  font-weight: 600;
  padding: 0.2rem 0.6rem;
  border-radius: calc(0.25lh + 0.1rem);
  background: var(--bg-tertiary);
  color: var(--text-secondary);
}

.badge-stage.red-badge {
  background: rgba(56, 189, 248, 0.15);
  color: var(--accent-blue);
}

.badge-stage.gold-badge {
  background: rgba(37, 99, 235, 0.15);
  color: var(--accent-sky);
}

.timeline-title {
  font-size: 1.25rem;
  margin-bottom: 0.4rem;
}

.timeline-text {
  color: var(--text-secondary);
  font-size: 0.94rem;
}

.timeline-subinfo {
  margin-top: 0.8rem;
  padding-top: 0.8rem;
  border-top: 1px solid var(--border-subtle);
  font-size: 0.85rem;
  color: var(--accent-blue);
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

/* 12. GUIDELINES & BENEFITS SECTION */
.grid-2col {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 2.5rem;
}

.glass-box {
  background: var(--bg-glass-strong);
  border: 1px solid var(--border-glass);
  border-radius: var(--radius-xl);
  padding: 2.2rem;
  box-shadow: var(--shadow-md);
}

.box-header {
  display: flex;
  align-items: center;
  gap: 1rem;
  margin-bottom: 2rem;
  border-bottom: 1px solid var(--border-subtle);
  padding-bottom: 1.25rem;
}

.box-icon {
  width: 48px;
  height: 48px;
  border-radius: var(--radius-md);
  background: rgba(56, 189, 248, 0.12);
  color: var(--accent-blue);
  display: flex;
  align-items: center;
  justify-content: center;
}

.box-header h3 {
  font-size: 1.35rem;
}

.checklist-items {
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
}

.check-item {
  display: flex;
  gap: 1rem;
  align-items: flex-start;
}

.check-box {
  width: 26px;
  height: 26px;
  border-radius: 50%;
  background: rgba(56, 189, 248, 0.15);
  color: var(--accent-blue);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  margin-top: 0.2rem;
}

.check-box svg.lucide {
  width: 14px;
  height: 14px;
}

.check-info strong {
  display: block;
  font-size: 1rem;
  margin-bottom: 0.2rem;
}

.check-info p {
  font-size: 0.88rem;
  color: var(--text-secondary);
}

/* Benefits Box */
.benefits-container {
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
}

.benefit-card {
  position: relative;
  background: var(--bg-tertiary);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-lg);
  padding: 1.4rem;
  display: flex;
  gap: 1.2rem;
  align-items: flex-start;
}

.benefit-badge {
  position: absolute;
  top: 12px;
  right: 14px;
  font-size: 0.72rem;
  font-weight: 700;
  padding: 0.2rem 0.55rem;
  border-radius: calc(0.25lh + 0.1rem);
  background: rgba(56, 189, 248, 0.12);
  color: var(--accent-blue);
}

.benefit-icon {
  width: 44px;
  height: 44px;
  border-radius: var(--radius-md);
  background: rgba(56, 189, 248, 0.12);
  color: var(--accent-blue);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.benefit-details h4 {
  font-size: 1.1rem;
  margin-bottom: 0.35rem;
}

.benefit-desc {
  font-size: 0.88rem;
  color: var(--text-secondary);
  margin-bottom: 0.6rem;
}

.benefit-tags {
  display: flex;
  gap: 0.5rem;
}

.tag-pill {
  font-size: 0.75rem;
  padding: 0.2rem 0.6rem;
  border-radius: var(--radius-sm);
  background: rgba(56, 189, 248, 0.1);
  color: var(--accent-blue);
  border: 1px solid rgba(56, 189, 248, 0.2);
}

/* 13. AWARDS PODIUM (Clean Blue Aesthetic) */
.awards-podium {
  display: grid;
  grid-template-columns: 1fr 1.15fr 1fr;
  gap: 1.75rem;
  align-items: flex-end;
  max-width: 1000px;
  margin: 0 auto;
}

.award-card {
  position: relative;
  background: var(--bg-glass-strong);
  border: 1px solid var(--border-glass);
  border-radius: var(--radius-xl);
  padding: 2.2rem 1.75rem;
  text-align: center;
  box-shadow: var(--shadow-lg);
  transition: transform var(--transition-normal);
}

.award-card:hover {
  transform: translateY(-8px);
}

.gold-card {
  border-color: var(--accent-blue);
  background: var(--gradient-podium-first);
  padding-top: 3rem;
  padding-bottom: 3rem;
  box-shadow: 0 12px 40px rgba(37, 99, 235, 0.25);
}

.trophy-crown {
  position: absolute;
  top: -22px;
  left: 50%;
  transform: translateX(-50%);
  color: var(--accent-blue);
  animation: crownBounce 2.5s ease-in-out infinite;
}

@keyframes crownBounce {
  0%, 100% { transform: translateX(-50%) translateY(0); }
  50% { transform: translateX(-50%) translateY(-6px); }
}

.medal-icon {
  width: 64px;
  height: 64px;
  border-radius: 50%;
  margin: 0 auto 1.25rem;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(56, 189, 248, 0.12);
  color: var(--accent-blue);
}

.gold-card .medal-icon {
  background: rgba(56, 189, 248, 0.2);
  color: var(--accent-blue);
}

.award-rank {
  font-size: 1.15rem;
  font-weight: 700;
  margin-bottom: 0.5rem;
}

.award-amount {
  font-family: 'Outfit', sans-serif;
  font-size: 2.3rem;
  font-weight: 900;
  color: var(--text-primary);
  line-height: 1;
  margin-bottom: 0.85rem;
}

.gold-card .award-amount {
  color: var(--accent-blue);
}

.award-amount span {
  font-size: 1.2rem;
  font-weight: 600;
}

.award-desc {
  font-size: 0.85rem;
  color: var(--text-secondary);
}

/* 14. FAQ SECTION */
.faq-search-wrapper {
  max-width: 680px;
  margin: 0 auto 2.5rem;
}

.search-input-box {
  position: relative;
  display: flex;
  align-items: center;
  background: var(--bg-glass-strong);
  border: 1px solid var(--border-glass);
  border-radius: calc(0.25lh + 0.425rem + 0.5px);
  padding: 0.85rem 1.4rem;
  box-shadow: var(--shadow-md);
}

.search-icon {
  color: var(--accent-blue);
  margin-right: 0.85rem;
}

.search-input-box input {
  flex-grow: 1;
  background: transparent;
  color: var(--text-primary);
  font-size: 0.98rem;
}

.search-input-box input::placeholder {
  color: var(--text-muted);
}

.clear-btn {
  background: transparent;
  color: var(--text-muted);
  cursor: pointer;
  padding: 0.2rem;
}

.clear-btn:hover {
  color: var(--text-primary);
}

.faq-list {
  max-width: 820px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.faq-item {
  background: var(--bg-glass-strong);
  border: 1px solid var(--border-glass);
  border-radius: var(--radius-lg);
  overflow: hidden;
  transition: all var(--transition-fast);
}

.faq-item.active {
  border-color: var(--accent-blue);
  box-shadow: var(--shadow-sm);
}

.faq-question {
  width: 100%;
  padding: 1.3rem 1.6rem;
  background: transparent;
  color: var(--text-primary);
  display: flex;
  align-items: center;
  justify-content: space-between;
  cursor: pointer;
  text-align: left;
  font-weight: 600;
  font-size: 1.05rem;
  gap: 1rem;
}

.q-badge {
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.85rem;
  font-weight: 800;
  color: var(--accent-blue);
  background: rgba(56, 189, 248, 0.12);
  padding: 0.2rem 0.5rem;
  border-radius: var(--radius-sm);
}

.q-title {
  flex-grow: 1;
}

.toggle-icon {
  color: var(--text-muted);
  transition: transform var(--transition-fast);
}

.faq-item.active .toggle-icon {
  transform: rotate(180deg);
  color: var(--accent-blue);
}

.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.35s ease-out, padding 0.35s ease;
  padding: 0 1.6rem;
  color: var(--text-secondary);
  font-size: 0.96rem;
  line-height: 1.7;
}

.faq-item.active .faq-answer {
  padding: 0 1.6rem 1.4rem;
}

.faq-answer a {
  color: var(--accent-blue);
  text-decoration: underline;
}

.faq-no-results {
  text-align: center;
  padding: 3rem 1rem;
  color: var(--text-muted);
}

.faq-no-results svg.lucide {
  width: 40px;
  height: 40px;
  margin-bottom: 0.75rem;
  color: var(--text-muted);
}

/* 15. CTA & CONTACT */
.cta-banner {
  background: var(--gradient-brand);
  border-radius: var(--radius-xl);
  padding: 3.5rem 2rem;
  text-align: center;
  color: white;
  margin-bottom: 3.5rem;
  box-shadow: 0 15px 40px rgba(37, 99, 235, 0.3);
  position: relative;
  overflow: hidden;
}

.cta-banner .section-tag {
  background: rgba(255, 255, 255, 0.2);
  color: #ffffff;
  border-color: rgba(255, 255, 255, 0.4);
}

.cta-content h2 {
  font-size: 2.3rem;
  color: white;
  margin-bottom: 0.75rem;
}

.cta-content p {
  font-size: 1.1rem;
  color: rgba(255, 255, 255, 0.9);
  margin-bottom: 2rem;
}

.cta-btns {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 1rem;
}

.cta-btns .btn-primary {
  background: #ffffff;
  color: #0f172a;
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.2);
}

.cta-btns .btn-primary:hover {
  background: #f1f5f9;
  transform: translateY(-3px);
}

.contact-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 2rem;
  max-width: 850px;
  margin: 0 auto;
}

.contact-card {
  background: var(--bg-glass-strong);
  border: 1px solid var(--border-glass);
  border-radius: var(--radius-xl);
  padding: 1.8rem;
  display: flex;
  align-items: center;
  gap: 1.5rem;
  box-shadow: var(--shadow-md);
  transition: all var(--transition-normal);
}

.contact-card:hover {
  border-color: var(--accent-blue);
  transform: translateY(-3px);
}

.contact-avatar {
  width: 52px;
  height: 52px;
  border-radius: var(--radius-md);
  background: rgba(56, 189, 248, 0.12);
  color: var(--accent-blue);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.contact-role {
  font-size: 0.82rem;
  font-weight: 600;
  color: var(--text-muted);
}

.contact-name {
  font-size: 1.35rem;
  margin: 0.2rem 0 0.3rem;
}

.contact-tel {
  font-family: 'JetBrains Mono', monospace;
  font-size: 1.05rem;
  font-weight: 600;
  color: var(--accent-blue);
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

/* 16. FOOTER */
.footer {
  background: var(--bg-secondary);
  border-top: 1px solid var(--border-subtle);
  padding: 4rem 0 2rem;
  position: relative;
  z-index: 1;
}

.footer-top {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr;
  gap: 3rem;
  margin-bottom: 3rem;
}

.footer-brand {
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
}

.footer-brand-logos {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  flex-wrap: wrap;
}

.footer-desc {
  color: var(--text-muted);
  font-size: 0.9rem;
  margin-top: 0.5rem;
  max-width: 320px;
}

.footer-links h4 {
  font-size: 1rem;
  margin-bottom: 1.25rem;
}

.footer-links ul {
  display: flex;
  flex-direction: column;
  gap: 0.6rem;
}

.footer-links a {
  color: var(--text-secondary);
  font-size: 0.9rem;
}

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

.highlight-link {
  color: var(--accent-blue) !important;
}

.footer-bottom {
  border-top: 1px solid var(--border-subtle);
  padding-top: 2rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 0.85rem;
  color: var(--text-muted);
  flex-wrap: wrap;
  gap: 1rem;
}

.footer-sys-info {
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
  font-family: 'JetBrains Mono', monospace;
  font-size: 0.76rem;
  color: var(--text-muted);
  background: var(--bg-glass);
  padding: 0.3rem 0.75rem;
  border-radius: calc(0.25lh + 0.15rem + 0.5px);
  border: 1px solid var(--border-subtle);
  transition: all var(--transition-fast);
}

.footer-sys-info:hover {
  border-color: rgba(56, 189, 248, 0.4);
  color: var(--text-secondary);
}

.footer-sys-info .sys-item {
  display: inline-flex;
  align-items: center;
  gap: 0.25rem;
}

.footer-sys-info .sys-item strong {
  color: var(--accent-blue);
  font-weight: 600;
}

.footer-sys-info .sys-divider {
  color: rgba(255, 255, 255, 0.15);
  font-weight: bold;
}

[data-theme="light"] .footer-sys-info .sys-divider {
  color: rgba(0, 0, 0, 0.15);
}

.footer-badges {
  display: flex;
  gap: 1.5rem;
}

.footer-badges span {
  display: flex;
  align-items: center;
  gap: 0.4rem;
}

/* 17. MODAL SYSTEM */
.modal-backdrop {
  position: fixed;
  top: 0;
  left: 0;
  width: 100vw;
  height: 100vh;
  background: rgba(0, 0, 0, 0.75);
  backdrop-filter: blur(8px);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 2000;
  opacity: 0;
  pointer-events: none;
  transition: opacity var(--transition-normal);
  padding: 1.5rem;
}

.modal-backdrop.open {
  opacity: 1;
  pointer-events: auto;
}

.modal-card {
  background: var(--bg-secondary);
  border: 1px solid var(--border-glass);
  border-radius: var(--radius-xl);
  max-width: 580px;
  width: 100%;
  max-height: 90vh;
  overflow-y: auto;
  padding: 2.5rem;
  position: relative;
  box-shadow: var(--shadow-lg);
  transform: translateY(20px) scale(0.96);
  transition: transform var(--transition-bounce);
}

.modal-backdrop.open .modal-card {
  transform: translateY(0) scale(1);
}

.modal-close {
  position: absolute;
  top: 1.5rem;
  right: 1.5rem;
  width: 36px;
  height: 36px;
  border-radius: 50%;
  background: var(--bg-tertiary);
  color: var(--text-secondary);
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
}

.modal-close:hover {
  color: var(--text-primary);
  background: var(--border-glass);
}

.modal-header {
  text-align: center;
  margin-bottom: 2rem;
}

.modal-icon {
  width: 54px;
  height: 54px;
  border-radius: 50%;
  background: rgba(56, 189, 248, 0.15);
  color: var(--accent-blue);
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 1rem;
}

.modal-header h3 {
  font-size: 1.5rem;
  margin-bottom: 0.4rem;
}

.modal-header p {
  font-size: 0.9rem;
  color: var(--text-secondary);
}

/* Form Styles */
.form-group {
  margin-bottom: 1.25rem;
}

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1rem;
}

.form-group label {
  display: block;
  font-size: 0.88rem;
  font-weight: 600;
  color: var(--text-secondary);
  margin-bottom: 0.4rem;
}

.form-group .req {
  color: var(--accent-blue);
}

.form-group input, .form-group select, .form-group textarea {
  width: 100%;
  background: var(--bg-tertiary);
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-md);
  padding: 0.8rem 1rem;
  color: var(--text-primary);
  font-size: 0.95rem;
  transition: border-color var(--transition-fast);
}

.form-group input:focus, .form-group select:focus, .form-group textarea:focus {
  border-color: var(--accent-blue);
  box-shadow: 0 0 0 3px rgba(56, 189, 248, 0.15);
}

.form-group textarea {
  resize: vertical;
}

.basic-email-options {
  display: grid;
  gap: 0.55rem;
  margin-top: 0.65rem;
}

.paid-plan-guide-trigger {
  display: inline-flex;
  align-items: center;
  width: fit-content;
  gap: 0.4rem;
  padding: 0;
  color: var(--accent-blue);
  background: transparent;
  border: 0;
  font: inherit;
  font-size: 0.84rem;
  font-weight: 700;
  cursor: pointer;
}

.paid-plan-guide-trigger:hover,
.paid-plan-guide-trigger:focus-visible {
  color: var(--text-primary);
  text-decoration: underline;
  text-underline-offset: 3px;
}

.paid-plan-guide-trigger svg {
  width: 16px;
  height: 16px;
}

.basic-email-checkbox {
  display: flex !important;
  align-items: flex-start;
  gap: 0.5rem;
  margin: 0 !important;
  color: var(--text-secondary) !important;
  font-size: 0.84rem !important;
  font-weight: 500 !important;
  cursor: pointer;
}

.basic-email-checkbox input {
  width: 1rem !important;
  height: 1rem;
  flex: 0 0 auto;
  margin: 0.1rem 0 0;
  accent-color: var(--accent-blue);
}

.paid-plan-guide-card {
  max-width: 540px;
}

.paid-plan-guide-content {
  color: var(--text-secondary);
  line-height: 1.7;
}

.paid-plan-guide-content p {
  margin: 0 0 1rem;
}

.paid-plan-guide-content a {
  color: var(--accent-blue);
  font-weight: 700;
}

.paid-plan-url {
  display: inline-block;
  overflow-wrap: anywhere;
}

.modal-actions {
  display: flex;
  gap: 1rem;
  justify-content: flex-end;
  margin-top: 2rem;
}

/* 18. TOAST NOTIFICATION */
.toast-container {
  position: fixed;
  bottom: 2rem;
  right: 2rem;
  z-index: 3000;
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
  pointer-events: none;
}

.toast {
  background: var(--bg-secondary);
  border: 1px solid var(--border-blue);
  border-radius: var(--radius-md);
  padding: 1rem 1.4rem;
  box-shadow: var(--shadow-lg);
  color: var(--text-primary);
  display: flex;
  align-items: center;
  gap: 0.8rem;
  font-size: 0.92rem;
  font-weight: 500;
  transform: translateX(100px);
  opacity: 0;
  transition: all var(--transition-bounce);
  pointer-events: auto;
}

.toast.show {
  transform: translateX(0);
  opacity: 1;
}

.toast svg.lucide {
  color: var(--accent-blue);
}

/* 19. RESPONSIVE MEDIA QUERIES (Enhanced Mobile Optimization) */
@media (max-width: 1024px) {
  .hero-container {
    grid-template-columns: 1fr;
    text-align: center;
    gap: 2.5rem;
  }

  .hero-host-bar {
    justify-content: center;
  }

  .hero-badge-wrap, .hero-buttons, .hero-quick-info {
    justify-content: center;
  }

  .hero-quick-info {
    align-items: center;
    text-align: center;
  }

  .stats-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .sponsor-perks-grid {
    grid-template-columns: 1fr;
  }

  .overview-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .grid-2col {
    grid-template-columns: 1fr;
  }

  .awards-podium {
    grid-template-columns: 1fr;
    align-items: stretch;
  }

  .gold-card {
    order: -1;
    padding-top: 2.2rem;
    padding-bottom: 2.2rem;
  }
}

@media (max-width: 768px) {
  .section {
    padding: 3.8rem 0;
  }

  .section-header {
    margin-bottom: 2.5rem;
  }

  .section-title {
    font-size: 1.85rem;
  }

  .hero-section {
    padding-top: 6.5rem;
    padding-bottom: 3.5rem;
  }

  .hero-title {
    font-size: clamp(1.85rem, 6vw, 2.4rem);
    line-height: 1.25;
  }

  .hero-desc {
    font-size: 0.98rem;
    margin-bottom: 1.5rem;
  }

  .nav-menu {
    position: fixed;
    top: 74px;
    left: 0;
    width: 100%;
    background: var(--bg-secondary);
    border-bottom: 1px solid var(--border-subtle);
    flex-direction: column;
    padding: 1.5rem 0;
    gap: 1.1rem;
    display: none;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.4);
    backdrop-filter: blur(16px);
  }

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

  .nav-apply-btn {
    display: none;
  }

  .home-page .navbar {
    height: auto;
  }

  .home-page .nav-container {
    flex-wrap: wrap;
    gap: 0.85rem;
    padding: 1rem;
  }

  .home-page .nav-actions {
    width: 100%;
    gap: 0.5rem;
  }

  .home-page .nav-actions .theme-btn {
    position: absolute;
    top: 0.6rem;
    right: 1rem;
  }

  .home-page .nav-apply-btn {
    display: inline-flex;
    flex: 1;
    gap: 0.3rem;
    padding: 0.65rem 0.4rem;
    font-size: 0.75rem;
  }

  .home-page .nav-apply-btn svg {
    width: 14px;
    height: 14px;
  }

  .home-page .hero-section {
    padding-top: 10rem;
  }

  .mobile-toggle {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    border-radius: var(--radius-sm);
    background: var(--bg-tertiary);
    border: 1px solid var(--border-glass);
  }

  /* Countdown on mobile */
  .countdown-card {
    padding: 1rem 0.85rem;
    margin-bottom: 1.5rem;
  }

  .countdown-header {
    flex-direction: column;
    gap: 0.4rem;
    align-items: center;
  }

  .next-schedule-content {
    grid-template-columns: 1fr;
    gap: 0.65rem;
  }

  .next-schedule-date,
  .next-schedule-detail {
    padding: 0.85rem 0.9rem;
  }

  .timer-grid {
    gap: 0.3rem;
  }

  .timer-unit {
    padding: 0.5rem 0.2rem;
  }

  .timer-val {
    font-size: clamp(1.3rem, 5vw, 1.65rem);
  }

  .timer-lbl {
    font-size: 0.6rem;
  }

  .timer-colon {
    font-size: 1.2rem;
  }

  .hero-buttons {
    flex-direction: column;
    gap: 0.75rem;
  }

  .hero-buttons .btn {
    width: 100%;
  }

  /* Hero Voxel Card & Badges on mobile */
  .voxel-card {
    padding: 0.75rem;
  }

  .floating-badge {
    position: static;
    margin-top: 0.75rem;
    width: 100%;
    justify-content: flex-start;
    padding: 0.75rem 1rem;
  }

  .float-anim-1, .float-anim-2 {
    animation: none;
  }

  /* Stats grid */
  .stats-section {
    margin-top: 0;
    padding: 1.5rem 0;
  }

  .stats-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 0.85rem;
  }

  .stat-card {
    padding: 1rem 0.85rem;
    gap: 0.75rem;
  }

  .stat-number {
    font-size: 1.5rem;
  }

  .stat-icon {
    width: 42px;
    height: 42px;
  }

  .stat-icon svg.lucide {
    width: 20px;
    height: 20px;
  }

  /* Sponsor card */
  .sponsor-highlight-card {
    padding: 2.2rem 1.2rem;
  }

  .sponsor-title {
    font-size: 1.55rem;
  }

  .sponsor-logo-box {
    padding: 1.2rem 1.5rem;
    width: 100%;
  }

  .sponsor-main-logo {
    height: 38px;
  }

  /* Tracks */
  .tracks-grid {
    grid-template-columns: 1fr;
    gap: 1.5rem;
  }

  .track-card {
    padding: 1.8rem 1.3rem;
  }

  .track-name {
    font-size: 1.7rem;
  }

  .quiz-card {
    padding: 1.8rem 1.2rem;
  }

  .quiz-options {
    grid-template-columns: 1fr;
  }

  .overview-grid {
    grid-template-columns: 1fr;
    gap: 1.25rem;
  }

  .overview-card {
    padding: 1.6rem 1.3rem;
  }

  /* Timeline */
  .timeline-wrapper::before {
    left: 17px;
  }

  .timeline-step {
    gap: 0.85rem;
    margin-bottom: 1.5rem;
  }

  .timeline-badge {
    width: 36px;
    height: 36px;
    font-size: 0.85rem;
  }

  .timeline-card {
    padding: 1.2rem 1.1rem;
  }

  .timeline-title {
    font-size: 1.1rem;
  }

  /* Guidelines & Benefits */
  .glass-box {
    padding: 1.6rem 1.2rem;
  }

  .benefit-card {
    flex-direction: column;
    padding: 1.2rem 1rem;
  }

  .benefit-badge {
    position: static;
    margin-bottom: 0.5rem;
    align-self: flex-start;
  }

  /* Contact & CTA */
  .cta-banner {
    padding: 2.5rem 1.2rem;
  }

  .cta-content h2 {
    font-size: 1.75rem;
  }

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

  .contact-card {
    padding: 1.4rem 1.2rem;
  }

  /* Footer */
  .footer-top {
    grid-template-columns: 1fr;
    gap: 2rem;
  }

  .footer-bottom {
    flex-direction: column;
    text-align: center;
    gap: 0.75rem;
  }

  .footer-badges {
    justify-content: center;
  }

  /* Modal */
  .modal-card {
    padding: 1.8rem 1.2rem;
    max-height: 85vh;
  }

  .form-row {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 480px) {
  .hero-title {
    font-size: 1.75rem;
  }

  .stats-grid {
    grid-template-columns: 1fr 1fr;
    gap: 0.65rem;
  }

  .stat-card {
    padding: 0.85rem 0.65rem;
    gap: 0.5rem;
  }

  .stat-number {
    font-size: 1.35rem;
  }

  .stat-label {
    font-size: 0.78rem;
  }

  .stat-icon {
    width: 36px;
    height: 36px;
  }

  .timer-val {
    font-size: 1.25rem;
  }

  .detail-row {
    flex-direction: column;
    align-items: flex-start;
    gap: 0.25rem;
  }

  .detail-val {
    text-align: left;
  }
}