/* ========================================
   ECO CODE HACKATHON - STYLES
   A nature-themed design system
   ======================================== */

/* CSS Custom Properties */
:root {
    /* Primary Colors - Forest Green Palette */
    --color-primary-50: #f0fdf4;
    --color-primary-100: #dcfce7;
    --color-primary-200: #bbf7d0;
    --color-primary-300: #86efac;
    --color-primary-400: #4ade80;
    --color-primary-500: #22c55e;
    --color-primary-600: #16a34a;
    --color-primary-700: #15803d;
    --color-primary-800: #166534;
    --color-primary-900: #14532d;
    --color-primary-950: #052e16;

    /* Accent Colors - Earth Tones */
    --color-accent-amber: #f59e0b;
    --color-accent-orange: #ea580c;
    --color-accent-teal: #14b8a6;
    --color-accent-sky: #0ea5e9;

    /* Neutral Colors */
    --color-neutral-50: #fafafa;
    --color-neutral-100: #f5f5f5;
    --color-neutral-200: #e5e5e5;
    --color-neutral-300: #d4d4d4;
    --color-neutral-400: #a3a3a3;
    --color-neutral-500: #737373;
    --color-neutral-600: #525252;
    --color-neutral-700: #404040;
    --color-neutral-800: #262626;
    --color-neutral-900: #171717;
    --color-neutral-950: #0a0a0a;

    /* Semantic Colors - Semi-transparent to show background canvas */
    --color-background: rgba(10, 15, 13, 0.85);
    --color-surface: rgba(17, 25, 22, 0.9);
    --color-surface-elevated: rgba(26, 36, 32, 0.92);
    --color-text: #f0fdf4;
    --color-text-muted: #a3a3a3;
    --color-border: rgba(34, 197, 94, 0.2);

    /* Gradients */
    --gradient-primary: linear-gradient(135deg, var(--color-primary-500), var(--color-accent-teal));
    --gradient-hero: linear-gradient(180deg,
        rgba(10, 15, 13, 0) 0%,
        rgba(10, 15, 13, 0.8) 50%,
        rgba(10, 15, 13, 1) 100%);
    --gradient-card: linear-gradient(180deg,
        rgba(34, 197, 94, 0.1) 0%,
        rgba(34, 197, 94, 0.02) 100%);
    --gradient-glow: radial-gradient(
        600px circle at var(--mouse-x, 50%) var(--mouse-y, 50%),
        rgba(34, 197, 94, 0.15),
        transparent 40%
    );

    /* Typography */
    --font-heading: 'Space Grotesk', system-ui, sans-serif;
    --font-body: 'Inter', system-ui, sans-serif;

    /* Spacing */
    --space-xs: 0.25rem;
    --space-sm: 0.5rem;
    --space-md: 1rem;
    --space-lg: 1.5rem;
    --space-xl: 2rem;
    --space-2xl: 3rem;
    --space-3xl: 4rem;
    --space-4xl: 6rem;

    /* Border Radius */
    --radius-sm: 0.375rem;
    --radius-md: 0.5rem;
    --radius-lg: 0.75rem;
    --radius-xl: 1rem;
    --radius-2xl: 1.5rem;
    --radius-full: 9999px;

    /* Transitions */
    --transition-fast: 150ms ease;
    --transition-base: 250ms ease;
    --transition-slow: 350ms ease;

    /* Shadows */
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.3);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.3), 0 2px 4px -2px rgba(0, 0, 0, 0.3);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.3), 0 4px 6px -4px rgba(0, 0, 0, 0.3);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.3), 0 8px 10px -6px rgba(0, 0, 0, 0.3);
    --shadow-glow: 0 0 40px rgba(34, 197, 94, 0.3);
}

/* ========================================
   BASE STYLES
   ======================================== */
*, *::before, *::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

html {
    scroll-behavior: smooth;
    scroll-padding-top: 80px;
}

body {
    font-family: var(--font-body);
    font-size: 16px;
    line-height: 1.6;
    color: var(--color-text);
    background-color: #050507;
    overflow-x: hidden;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

::selection {
    background-color: var(--color-primary-500);
    color: var(--color-background);
}

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

a {
    color: var(--color-primary-400);
    text-decoration: none;
    transition: color var(--transition-fast);
}

a:hover {
    color: var(--color-primary-300);
}

h1, h2, h3, h4, h5, h6 {
    font-family: var(--font-heading);
    font-weight: 700;
    line-height: 1.2;
}

/* ========================================
   ANIMATED BACKGROUND CANVAS
   ======================================== */
#bg-canvas {
    position: fixed;
    top: 0;
    left: 0;
    width: 100vw;
    height: 100vh;
    z-index: -1;
}

/* ========================================
   ICON STYLES (replacing emojis)
   ======================================== */
.logo-icon {
    width: 1.75rem;
    height: 1.75rem;
    object-fit: contain;
}

.badge-icon {
    width: 1.25rem;
    height: 1.25rem;
    object-fit: contain;
}

.detail-icon {
    width: 1.25rem;
    height: 1.25rem;
    object-fit: contain;
    filter: brightness(0) invert(1);
}

.feature-icon {
    width: 2.5rem;
    height: 2.5rem;
    object-fit: contain;
    flex-shrink: 0;
}

.track-icon {
    width: 3.5rem;
    height: 3.5rem;
    object-fit: contain;
    margin-bottom: var(--space-md);
}

.timeline-badge {
    width: 20px;
    height: 20px;
    object-fit: contain;
    position: absolute;
    top: var(--space-lg);
    left: -11px;
    z-index: 2;
    background: var(--color-surface-elevated);
    border-radius: 50%;
    padding: 2px;
}

.prize-rank {
    width: 4rem;
    height: 4rem;
    object-fit: contain;
    margin-bottom: var(--space-md);
}

.special-icon {
    width: 2.5rem;
    height: 2.5rem;
    object-fit: contain;
    margin-bottom: var(--space-sm);
    display: block;
}

.team-avatar img {
    width: 60%;
    height: 60%;
    object-fit: contain;
    opacity: 0.5;
}

.inline-icon {
    width: 1em;
    height: 1em;
    vertical-align: middle;
    display: inline;
}

.inline-logo {
    height: 1.1em;
    width: auto;
    vertical-align: middle;
    display: inline;
    margin: 0 0.1em;
}

.footer-logo-img {
    height: 36px;
    width: auto;
}

/* ========================================
   LAYOUT
   ======================================== */
.container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--space-lg);
}

.section {
    position: relative;
    padding: var(--space-4xl) 0;
    z-index: 1;
}

/* ========================================
   NAVIGATION
   ======================================== */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    padding: var(--space-md) 0;
    background: rgba(10, 15, 13, 0.7);
    backdrop-filter: blur(12px);
    border-bottom: 1px solid transparent;
    transition: all var(--transition-base);
}

.navbar.scrolled {
    padding: var(--space-sm) 0;
    border-bottom-color: var(--color-border);
}

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--space-lg);
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.nav-logo {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    font-family: var(--font-heading);
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--color-text);
    text-decoration: none;
}

.logo-icon {
    font-size: 1.75rem;
}

.logo-img {
    height: 40px;
    width: auto;
}

.nav-menu {
    display: flex;
    align-items: center;
    gap: var(--space-xl);
    list-style: none;
}

.nav-link {
    position: relative;
    font-size: 0.9rem;
    font-weight: 500;
    color: var(--color-text-muted);
    transition: color var(--transition-fast);
}

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

.nav-link::after {
    content: '';
    position: absolute;
    bottom: -4px;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--gradient-primary);
    border-radius: var(--radius-full);
    transition: width var(--transition-base);
}

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

.btn-nav {
    padding: var(--space-sm) var(--space-lg);
    background: var(--gradient-primary);
    color: var(--color-background) !important;
    border-radius: var(--radius-full);
    font-weight: 600;
}

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

.btn-nav:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-glow);
}

.nav-toggle {
    display: none;
    flex-direction: column;
    gap: 5px;
    background: none;
    border: none;
    cursor: pointer;
    padding: var(--space-sm);
}

.nav-toggle span {
    width: 24px;
    height: 2px;
    background: var(--color-text);
    border-radius: var(--radius-full);
    transition: all var(--transition-fast);
}

/* ========================================
   MLH TRUST BADGE
   ======================================== */
#mlh-trust-badge {
    position: fixed;
    top: 0;
    right: 50px;
    width: 100px;
    z-index: 1001;
    display: block;
}

#mlh-trust-badge img {
    width: 100%;
}

/* ========================================
   HERO SECTION
   ======================================== */
.hero {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: var(--space-4xl) var(--space-lg);
    overflow: hidden;
}

.hero-bg {
    display: none; /* Hidden to show canvas background */
}

.hero-gradient {
    position: absolute;
    inset: 0;
    background:
        radial-gradient(ellipse 80% 50% at 50% -20%, rgba(34, 197, 94, 0.15), transparent),
        radial-gradient(ellipse 60% 40% at 80% 60%, rgba(20, 184, 166, 0.08), transparent),
        radial-gradient(ellipse 50% 30% at 20% 80%, rgba(34, 197, 94, 0.05), transparent);
}

.hero-pattern {
    display: none; /* Hidden to let canvas background show through */
}

.hero-content {
    text-align: center;
    max-width: 900px;
    animation: fadeInUp 1s ease-out;
    position: relative;
    padding: var(--space-2xl);
    border-radius: 24px;
    transition: background-color 0.3s ease, border-color 0.3s ease;
}

.hero-content::before {
    content: '';
    position: absolute;
    inset: 0;
    background: rgba(10, 15, 13, 0.75);
    border-radius: 24px;
    border: 1px solid rgba(255, 255, 255, 0.05);
    opacity: var(--hero-bg-opacity, 0);
    transition: opacity 0.3s ease;
    z-index: -1;
}

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.hero-badge {
    display: inline-flex;
    align-items: center;
    gap: var(--space-sm);
    padding: var(--space-sm) var(--space-lg);
    background: rgba(34, 197, 94, 0.1);
    border: 1px solid rgba(34, 197, 94, 0.3);
    border-radius: var(--radius-full);
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--color-primary-300);
    margin-bottom: var(--space-xl);
}

.badge-icon {
    animation: pulse 2s ease-in-out infinite;
}

@keyframes pulse {
    0%, 100% { transform: scale(1); }
    50% { transform: scale(1.1); }
}

.hero-title {
    font-size: clamp(4rem, 15vw, 10rem);
    font-weight: 700;
    line-height: 0.9;
    letter-spacing: -0.02em;
    margin-bottom: var(--space-lg);
}

.hero-logo {
    max-width: 400px;
    width: 100%;
    height: auto;
    display: block;
    margin: 0 auto;
}

.title-line {
    display: block;
}

.highlight {
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-tagline {
    font-size: clamp(1.25rem, 3vw, 1.75rem);
    font-weight: 500;
    color: var(--color-primary-400);
    margin-bottom: var(--space-lg);
    letter-spacing: 0.1em;
    text-transform: uppercase;
}

.hero-description {
    font-size: 1.125rem;
    color: var(--color-text-muted);
    max-width: 600px;
    margin: 0 auto var(--space-xl);
    line-height: 1.7;
}

.hero-details {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: var(--space-xl);
    margin-bottom: var(--space-2xl);
}

.detail-item {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    font-size: 1rem;
    color: var(--color-text);
}

.detail-icon {
    font-size: 1.25rem;
}

.hero-cta {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: var(--space-md);
    margin-bottom: var(--space-3xl);
}

.hero-stats {
    display: flex;
    justify-content: center;
    gap: var(--space-3xl);
    padding-top: var(--space-2xl);
    border-top: 1px solid var(--color-border);
}

.stat {
    text-align: center;
}

.stat-number {
    display: block;
    font-family: var(--font-heading);
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--color-primary-400);
    line-height: 1;
}

.stat-label {
    font-size: 0.875rem;
    color: var(--color-text-muted);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.scroll-indicator {
    position: absolute;
    bottom: var(--space-2xl);
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--space-sm);
    font-size: 0.75rem;
    color: var(--color-text-muted);
    animation: bounce 2s ease-in-out infinite;
}

.scroll-arrow {
    width: 20px;
    height: 20px;
    border-right: 2px solid var(--color-primary-500);
    border-bottom: 2px solid var(--color-primary-500);
    transform: rotate(45deg);
}

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

/* ========================================
   PAGE HEADER (for sub-pages)
   ======================================== */
.page-header {
    position: relative;
    padding: calc(var(--space-4xl) + 80px) var(--space-lg) var(--space-3xl);
    text-align: center;
}

.page-title {
    font-family: var(--font-display);
    font-size: clamp(2.5rem, 8vw, 4rem);
    font-weight: 700;
    line-height: 1.1;
    margin-bottom: var(--space-md);
}

.page-subtitle {
    font-size: 1.25rem;
    color: var(--color-text-muted);
    max-width: 600px;
    margin: 0 auto;
}

/* ========================================
   BUTTONS
   ======================================== */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-sm);
    padding: var(--space-md) var(--space-xl);
    font-family: var(--font-body);
    font-size: 1rem;
    font-weight: 600;
    text-decoration: none;
    border: none;
    border-radius: var(--radius-full);
    cursor: pointer;
    transition: all var(--transition-base);
}

.btn-primary {
    background: var(--gradient-primary);
    color: var(--color-background);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-glow);
    color: var(--color-background);
}

.btn-secondary {
    background: transparent;
    color: var(--color-text);
    border: 2px solid var(--color-border);
}

.btn-secondary:hover {
    border-color: var(--color-primary-500);
    color: var(--color-primary-400);
}

.btn-outline {
    background: transparent;
    color: var(--color-primary-400);
    border: 2px solid var(--color-primary-500);
}

.btn-outline:hover {
    background: var(--color-primary-500);
    color: var(--color-background);
}

.btn-lg {
    padding: var(--space-lg) var(--space-2xl);
    font-size: 1.125rem;
}

.btn-block {
    width: 100%;
}

.btn-disabled {
    opacity: 0.7;
    cursor: not-allowed;
    pointer-events: none;
}

/* ========================================
   SECTION HEADERS
   ======================================== */
.section-header {
    text-align: center;
    max-width: 700px;
    margin: 0 auto var(--space-3xl);
}

.section-tag {
    display: inline-block;
    padding: var(--space-xs) var(--space-md);
    background: rgba(34, 197, 94, 0.1);
    border: 1px solid rgba(34, 197, 94, 0.3);
    border-radius: var(--radius-full);
    font-size: 0.75rem;
    font-weight: 600;
    color: var(--color-primary-400);
    text-transform: uppercase;
    letter-spacing: 0.1em;
    margin-bottom: var(--space-md);
}

.section-title {
    font-size: clamp(2rem, 5vw, 3.5rem);
    margin-bottom: var(--space-md);
}

.section-subtitle {
    font-size: 1.125rem;
    color: var(--color-text-muted);
}

/* ========================================
   ABOUT SECTION
   ======================================== */
.about {
    background: transparent;
}

.about > .container {
    background: linear-gradient(180deg, rgba(10, 15, 13, 0.75), rgba(17, 25, 22, 0.8));
    border-radius: 24px;
    padding: var(--space-3xl);
    border: 1px solid rgba(255, 255, 255, 0.05);
}

.about-grid {
    display: grid;
    grid-template-columns: 1fr 400px;
    gap: var(--space-4xl);
    align-items: center;
}

.about-lead {
    font-size: 1.25rem;
    color: var(--color-text);
    margin-bottom: var(--space-lg);
}

.about-content p {
    color: var(--color-text-muted);
    margin-bottom: var(--space-lg);
}

.about-features {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--space-lg);
    margin-top: var(--space-2xl);
}

.feature {
    display: flex;
    gap: var(--space-md);
}

.feature-icon {
    font-size: 2rem;
    flex-shrink: 0;
}

.feature-text h4 {
    font-size: 1rem;
    margin-bottom: var(--space-xs);
}

.feature-text p {
    font-size: 0.875rem;
    margin: 0;
}

.about-visual {
    display: flex;
    justify-content: center;
}

.visual-card {
    position: relative;
    padding: var(--space-3xl);
    background: var(--gradient-card);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-2xl);
    text-align: center;
}

.earth-animation {
    position: relative;
    width: 200px;
    height: 200px;
    margin: 0 auto var(--space-xl);
}

.earth {
    width: 120px;
    height: 120px;
    object-fit: contain;
    animation: spin 20s linear infinite;
}

@keyframes spin {
    from { transform: rotate(0deg); }
    to { transform: rotate(360deg); }
}

.orbit {
    position: absolute;
    inset: -20px;
    border: 2px dashed var(--color-border);
    border-radius: 50%;
    animation: orbit 10s linear infinite;
}

@keyframes orbit {
    from { transform: rotate(0deg); }
    to { transform: rotate(360deg); }
}

.satellite {
    position: absolute;
    top: -10px;
    left: 50%;
    transform: translateX(-50%);
    width: 24px;
    height: 24px;
}

.visual-stat {
    display: block;
    font-family: var(--font-heading);
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--color-primary-400);
}

.visual-label {
    color: var(--color-text-muted);
    font-size: 0.875rem;
}

/* ========================================
   TRACKS SECTION
   ======================================== */
.tracks {
    background: transparent;
}

.tracks > .container {
    background: rgba(17, 25, 22, 0.8);
    border-radius: 24px;
    padding: var(--space-3xl);
    border: 1px solid rgba(255, 255, 255, 0.05);
}

.tracks-grid {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--space-xl);
}

@media (max-width: 1024px) {
    .tracks-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 768px) {
    .tracks-grid {
        grid-template-columns: 1fr;
    }
}

.track-card {
    position: relative;
    padding: var(--space-xl);
    background: var(--color-surface-elevated);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-xl);
    transition: all var(--transition-base);
    overflow: hidden;
}

.track-card::before {
    content: '';
    position: absolute;
    inset: 0;
    background: var(--gradient-glow);
    opacity: 0;
    transition: opacity var(--transition-base);
    pointer-events: none;
}

.track-card:hover {
    transform: translateY(-5px);
    border-color: var(--color-primary-500);
    box-shadow: var(--shadow-glow);
}

.track-card:hover::before {
    opacity: 1;
}

.track-icon {
    font-size: 3rem;
    margin-bottom: var(--space-md);
}

.track-title {
    font-size: 1.5rem;
    margin-bottom: var(--space-sm);
}

.track-description {
    color: var(--color-text-muted);
    font-size: 0.9375rem;
    margin-bottom: var(--space-lg);
}

.track-ideas {
    list-style: none;
    margin-bottom: var(--space-xl);
}

.track-ideas li {
    position: relative;
    padding-left: var(--space-lg);
    font-size: 0.875rem;
    color: var(--color-text-muted);
    margin-bottom: var(--space-sm);
}

.track-ideas li::before {
    content: '→';
    position: absolute;
    left: 0;
    color: var(--color-primary-500);
}

.track-prize {
    padding-top: var(--space-md);
    border-top: 1px solid var(--color-border);
}

.prize-label {
    display: block;
    font-size: 0.75rem;
    color: var(--color-text-muted);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.prize-amount {
    font-family: var(--font-heading);
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--color-primary-400);
}

/* ========================================
   SCHEDULE SECTION
   ======================================== */
.schedule {
    background: transparent;
}

.schedule > .container {
    background: linear-gradient(180deg, rgba(17, 25, 22, 0.8), rgba(10, 15, 13, 0.75));
    border-radius: 24px;
    padding: var(--space-3xl);
    border: 1px solid rgba(255, 255, 255, 0.05);
}

.schedule-tabs {
    display: flex;
    justify-content: center;
    gap: var(--space-md);
    margin-bottom: var(--space-2xl);
}

.schedule-tab {
    padding: var(--space-md) var(--space-xl);
    background: transparent;
    border: 2px solid var(--color-border);
    border-radius: var(--radius-full);
    color: var(--color-text-muted);
    font-family: var(--font-body);
    font-size: 1rem;
    font-weight: 500;
    cursor: pointer;
    transition: all var(--transition-base);
}

.schedule-tab:hover {
    border-color: var(--color-primary-500);
    color: var(--color-primary-400);
}

.schedule-tab.active {
    background: var(--gradient-primary);
    border-color: transparent;
    color: var(--color-background);
}

.schedule-day {
    display: none;
}

.schedule-day.active {
    display: block;
    animation: fadeIn 0.3s ease;
}

@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

.timeline {
    position: relative;
    max-width: 700px;
    margin: 0 auto;
}

.timeline::before {
    content: '';
    position: absolute;
    top: 0;
    left: 100px;
    width: 2px;
    height: 100%;
    background: var(--color-border);
}

.timeline-item {
    display: flex;
    gap: var(--space-xl);
    margin-bottom: var(--space-lg);
}

.timeline-item.highlight .timeline-content {
    background: rgba(34, 197, 94, 0.1);
    border-color: var(--color-primary-500);
}

.timeline-time {
    flex-shrink: 0;
    width: 80px;
    font-family: var(--font-heading);
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--color-primary-400);
    text-align: right;
    padding-top: var(--space-md);
}

.timeline-content {
    position: relative;
    flex: 1;
    padding: var(--space-lg);
    background: var(--color-surface-elevated);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
}

.timeline-content::before {
    content: '';
    position: absolute;
    top: var(--space-lg);
    left: -11px;
    width: 20px;
    height: 20px;
    background: var(--color-surface-elevated);
    border: 1px solid var(--color-border);
    border-radius: 50%;
    z-index: 1;
}

.timeline-badge {
    position: absolute;
    top: var(--space-lg);
    left: -11px;
    width: 20px;
    height: 20px;
    font-size: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 2;
}

.timeline-content h4 {
    font-size: 1.125rem;
    margin-bottom: var(--space-xs);
}

.timeline-content p {
    font-size: 0.875rem;
    color: var(--color-text-muted);
    margin: 0;
}

/* ========================================
   PRIZES SECTION
   ======================================== */
.prizes {
    background: transparent;
}

.prizes > .container {
    background: rgba(10, 15, 13, 0.75);
    border-radius: 24px;
    padding: var(--space-3xl);
    border: 1px solid rgba(255, 255, 255, 0.05);
}

.prizes-showcase {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--space-xl);
    margin-bottom: var(--space-4xl);
}

.prize-card {
    position: relative;
    padding: var(--space-2xl);
    background: var(--color-surface-elevated);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-xl);
    text-align: center;
    transition: all var(--transition-base);
}

.prize-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-xl);
}

.prize-card.grand {
    border-color: var(--color-accent-amber);
    background: linear-gradient(180deg, rgba(245, 158, 11, 0.1), var(--color-surface-elevated));
}

.prize-card.grand:hover {
    box-shadow: 0 0 40px rgba(245, 158, 11, 0.3);
}

.prize-card.second {
    border-color: var(--color-neutral-400);
}

.prize-card.third {
    border-color: #cd7f32;
}

.prize-rank {
    font-size: 3rem;
    margin-bottom: var(--space-md);
}

.prize-title {
    font-size: 1.25rem;
    margin-bottom: var(--space-sm);
}

.prize-value {
    font-family: var(--font-heading);
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--color-primary-400);
    margin-bottom: var(--space-md);
}

.prize-card.grand .prize-value {
    color: var(--color-accent-amber);
}

.prize-description {
    font-size: 0.9375rem;
    color: var(--color-text-muted);
    margin-bottom: var(--space-lg);
}

.prize-perks {
    list-style: none;
    text-align: left;
}

.prize-perks li {
    position: relative;
    padding-left: var(--space-lg);
    font-size: 0.875rem;
    color: var(--color-text-muted);
    margin-bottom: var(--space-sm);
}

.prize-perks li::before {
    content: '✓';
    position: absolute;
    left: 0;
    color: var(--color-primary-500);
}

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

.special-title {
    font-size: 1.5rem;
    margin-bottom: var(--space-2xl);
}

.special-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
    gap: var(--space-lg);
}

.special-card {
    padding: var(--space-lg);
    background: var(--color-surface);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    transition: all var(--transition-base);
}

.special-card:hover {
    border-color: var(--color-primary-500);
    transform: translateY(-3px);
}

.special-icon {
    font-size: 2rem;
    margin-bottom: var(--space-sm);
    display: block;
}

.special-card h4 {
    font-size: 0.9375rem;
    margin-bottom: var(--space-xs);
}

.special-card p {
    font-size: 0.875rem;
    color: var(--color-primary-400);
    margin: 0;
}

/* ========================================
   SPONSORS SECTION
   ======================================== */
.sponsors {
    background: transparent;
}

.sponsors > .container {
    background: rgba(17, 25, 22, 0.8);
    border-radius: 24px;
    padding: var(--space-3xl);
    border: 1px solid rgba(255, 255, 255, 0.05);
}

.sponsor-tiers {
    margin-bottom: var(--space-3xl);
}

.sponsor-tier {
    margin-bottom: var(--space-2xl);
    text-align: center;
}

.tier-title {
    font-size: 1.25rem;
    margin-bottom: var(--space-xl);
    color: var(--color-text-muted);
}

.sponsor-logos {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: var(--space-xl);
}

.sponsor-logo {
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--color-surface-elevated);
    border: 2px dashed var(--color-border);
    border-radius: var(--radius-lg);
    transition: all var(--transition-base);
}

.sponsor-logo.placeholder {
    width: 200px;
    height: 100px;
    color: var(--color-text-muted);
    font-size: 0.875rem;
}

.sponsor-logo.placeholder.small {
    width: 150px;
    height: 75px;
}

.sponsor-logo:hover {
    border-color: var(--color-primary-500);
    border-style: solid;
}

.sponsor-cta {
    text-align: center;
    padding-top: var(--space-2xl);
    border-top: 1px solid var(--color-border);
}

.sponsor-cta p {
    color: var(--color-text-muted);
    margin-bottom: var(--space-md);
}

/* ========================================
   FAQ SECTION
   ======================================== */
.faq {
    background: transparent;
}

.faq > .container {
    background: linear-gradient(180deg, rgba(17, 25, 22, 0.8), rgba(10, 15, 13, 0.75));
    border-radius: 24px;
    padding: var(--space-3xl);
    border: 1px solid rgba(255, 255, 255, 0.05);
}

.faq-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(400px, 1fr));
    gap: var(--space-md);
    margin-bottom: var(--space-2xl);
}

.faq-item {
    background: var(--color-surface-elevated);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    overflow: hidden;
}

.faq-question {
    width: 100%;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: var(--space-md);
    padding: var(--space-lg);
    background: none;
    border: none;
    font-family: var(--font-body);
    font-size: 1rem;
    font-weight: 600;
    color: var(--color-text);
    text-align: left;
    cursor: pointer;
    transition: all var(--transition-fast);
}

.faq-question:hover {
    color: var(--color-primary-400);
}

.faq-icon {
    flex-shrink: 0;
    width: 20px;
    height: 20px;
    color: var(--color-primary-500);
    transition: transform var(--transition-base);
}

.faq-item.active .faq-icon {
    transform: rotate(45deg);
}

.faq-answer {
    max-height: 0;
    overflow: hidden;
    transition: max-height var(--transition-base);
}

.faq-item.active .faq-answer {
    max-height: 300px;
}

.faq-answer p {
    padding: 0 var(--space-lg) var(--space-lg);
    color: var(--color-text-muted);
    font-size: 0.9375rem;
}

.faq-answer a {
    color: var(--color-primary-400);
    text-decoration: underline;
}

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

.faq-more p {
    color: var(--color-text-muted);
    margin-bottom: var(--space-md);
}

/* ========================================
   REGISTRATION SECTION
   ======================================== */
.register {
    background: transparent;
    position: relative;
    overflow: hidden;
}

.register > .container {
    background: rgba(10, 15, 13, 0.75);
    border-radius: 24px;
    padding: var(--space-3xl);
    border: 1px solid rgba(255, 255, 255, 0.05);
    position: relative;
}

.register::before {
    display: none; /* Removed to let canvas show through */
}

.register-content {
    position: relative;
    display: grid;
    grid-template-columns: 1fr 400px;
    gap: var(--space-4xl);
    align-items: center;
}

.register-info h2 {
    margin-bottom: var(--space-lg);
}

.register-info > p {
    font-size: 1.125rem;
    color: var(--color-text-muted);
    margin-bottom: var(--space-xl);
}

.register-perks {
    list-style: none;
    margin-bottom: var(--space-2xl);
}

.register-perks li {
    display: flex;
    align-items: center;
    gap: var(--space-md);
    padding: var(--space-sm) 0;
    color: var(--color-text);
}

.register-perks svg {
    flex-shrink: 0;
    width: 20px;
    height: 20px;
    color: var(--color-primary-500);
}

.register-deadline {
    padding-top: var(--space-xl);
    border-top: 1px solid var(--color-border);
}

.deadline-label {
    display: block;
    font-size: 0.875rem;
    color: var(--color-text-muted);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin-bottom: var(--space-md);
}

.countdown {
    display: flex;
    gap: var(--space-lg);
}

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

.countdown-value {
    display: block;
    font-family: var(--font-heading);
    font-size: 2rem;
    font-weight: 700;
    color: var(--color-primary-400);
    line-height: 1;
}

.countdown-label {
    font-size: 0.75rem;
    color: var(--color-text-muted);
    text-transform: uppercase;
}

.register-card {
    padding: var(--space-2xl);
    background: var(--color-surface-elevated);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-2xl);
    text-align: center;
}

.register-card h3 {
    font-size: 1.5rem;
    margin-bottom: var(--space-sm);
}

.register-card > p {
    color: var(--color-text-muted);
    margin-bottom: var(--space-xl);
}

.register-card .btn {
    margin-bottom: var(--space-lg);
}

.register-note {
    font-size: 0.75rem;
    color: var(--color-text-muted);
}

.register-note a {
    color: var(--color-primary-400);
}

/* ========================================
   TEAM SECTION
   ======================================== */
.team {
    background: transparent;
}

.team > .container {
    background: rgba(17, 25, 22, 0.8);
    border-radius: 24px;
    padding: var(--space-3xl);
    border: 1px solid rgba(255, 255, 255, 0.05);
}

.team-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: var(--space-xl);
}

.team-card {
    text-align: center;
    padding: var(--space-xl);
    background: var(--color-surface-elevated);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-xl);
    transition: all var(--transition-base);
}

.team-card:hover {
    transform: translateY(-5px);
    border-color: var(--color-primary-500);
}

.team-avatar {
    width: 100px;
    height: 100px;
    margin: 0 auto var(--space-lg);
    background: var(--gradient-card);
    border: 2px solid var(--color-border);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 2.5rem;
}

.team-name {
    font-size: 1.125rem;
    margin-bottom: var(--space-xs);
}

.team-role {
    font-size: 0.875rem;
    color: var(--color-primary-400);
    margin-bottom: var(--space-md);
}

.team-social {
    display: flex;
    justify-content: center;
    gap: var(--space-sm);
}

.team-social a {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 36px;
    height: 36px;
    background: var(--color-surface);
    border-radius: 50%;
    color: var(--color-text-muted);
    transition: all var(--transition-fast);
}

.team-social a:hover {
    background: var(--color-primary-500);
    color: var(--color-background);
}

/* ========================================
   FOOTER
   ======================================== */
.footer {
    background: rgba(17, 25, 22, 0.85);
    padding: var(--space-4xl) 0 var(--space-xl);
    border-top: 1px solid var(--color-border);
}

.footer-content {
    display: grid;
    grid-template-columns: 1fr auto;
    gap: var(--space-4xl);
    margin-bottom: var(--space-3xl);
}

.footer-logo {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    font-family: var(--font-heading);
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--color-text);
    margin-bottom: var(--space-md);
}

.footer-brand > p {
    max-width: 300px;
    color: var(--color-text-muted);
    font-size: 0.9375rem;
    margin-bottom: var(--space-lg);
}

.footer-social {
    display: flex;
    gap: var(--space-md);
}

.footer-social a {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    background: var(--color-surface-elevated);
    border-radius: 50%;
    color: var(--color-text-muted);
    transition: all var(--transition-fast);
}

.footer-social a:hover {
    background: var(--color-primary-500);
    color: var(--color-background);
    transform: translateY(-2px);
}

.footer-links {
    display: flex;
    gap: var(--space-4xl);
}

.footer-column h4 {
    font-size: 0.875rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--color-text);
    margin-bottom: var(--space-lg);
}

.footer-column ul {
    list-style: none;
}

.footer-column li {
    margin-bottom: var(--space-sm);
}

.footer-column a {
    color: var(--color-text-muted);
    font-size: 0.9375rem;
    transition: color var(--transition-fast);
}

.footer-column a:hover {
    color: var(--color-primary-400);
}

.footer-bottom {
    padding-top: var(--space-xl);
    border-top: 1px solid var(--color-border);
    text-align: center;
}

.footer-bottom p {
    font-size: 0.875rem;
    color: var(--color-text-muted);
    margin-bottom: var(--space-sm);
}

.mlh-notice a {
    color: var(--color-primary-400);
}

/* ========================================
   RESPONSIVE DESIGN
   ======================================== */
@media (max-width: 1024px) {
    .about-grid {
        grid-template-columns: 1fr;
    }

    .about-visual {
        order: -1;
    }

    .prizes-showcase {
        grid-template-columns: 1fr;
    }

    .prize-card.grand {
        order: -1;
    }

    .register-content {
        grid-template-columns: 1fr;
    }

    .footer-content {
        grid-template-columns: 1fr;
        gap: var(--space-2xl);
    }

    .footer-links {
        flex-wrap: wrap;
        gap: var(--space-2xl);
    }
}

@media (max-width: 768px) {
    #mlh-trust-badge {
        right: 20px;
        width: 80px;
    }

    .nav-menu {
        position: fixed;
        top: 0;
        right: -100%;
        width: 100%;
        height: 100vh;
        flex-direction: column;
        justify-content: center;
        background: var(--color-background);
        transition: right var(--transition-base);
    }

    .nav-menu.active {
        right: 0;
    }

    .nav-toggle {
        display: flex;
        z-index: 1001;
    }

    .nav-toggle.active span:nth-child(1) {
        transform: translateY(7px) rotate(45deg);
    }

    .nav-toggle.active span:nth-child(2) {
        opacity: 0;
    }

    .nav-toggle.active span:nth-child(3) {
        transform: translateY(-7px) rotate(-45deg);
    }

    .hero-stats {
        flex-wrap: wrap;
        gap: var(--space-xl);
    }

    .stat {
        flex: 1 0 40%;
    }

    .about-features {
        grid-template-columns: 1fr;
    }

    .schedule-tabs {
        flex-direction: column;
    }

    .timeline::before {
        left: 20px;
    }

    .timeline-time {
        display: none;
    }

    .timeline-content::before,
    .timeline-badge {
        left: -40px;
    }

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

    .countdown {
        flex-wrap: wrap;
    }

    .countdown-item {
        flex: 1 0 40%;
    }
}

@media (max-width: 480px) {
    .hero-title {
        font-size: 3.5rem;
    }

    .hero-details {
        flex-direction: column;
        gap: var(--space-md);
    }

    .hero-cta {
        flex-direction: column;
    }

    .btn-lg {
        width: 100%;
    }

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

/* ========================================
   UTILITIES
   ======================================== */
.sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border: 0;
}

/* Animation on scroll */
.reveal {
    opacity: 0;
    transform: translateY(30px);
    transition: all 0.6s ease;
}

.reveal.active {
    opacity: 1;
    transform: translateY(0);
}