/* ==========================================
   EdenHack FEST - Custom Styles
   Bootstrap 5 + Custom Design System
   ========================================== */

:root {
    /* Colors */
    --primary: #667eea;
    --primary-blue: #667eea;
    --primary-dark: #5568d3;
    --secondary: #764ba2;
    --primary-purple: #764ba2;
    --accent: #f093fb;
    --accent-pink: #f72585;
    --accent-orange: #ff6b35;
    --accent-yellow: #fbbf24;
    --accent-cyan: #06ffa5;
    --success: #4ade80;
    --danger: #f87171;
    --warning: #fbbf24;
    --info: #0ea5e9;
    
    /* Dark Theme */
    --bg-dark: #0a0a0f;
    --dark-bg: #0a0a0f;
    --bg-surface: #13131a;
    --dark-card: #13131a;
    --bg-surface-hover: #1a1a24;
    --border-color: #2a2a35;
    --text-primary: #ffffff;
    --light-text: #ffffff;
    --text-secondary: #d4d4d8;
    --gray-text: #d4d4d8;
    
    /* Gradients */
    --gradient-primary: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    --gradient-accent: linear-gradient(135deg, #f093fb 0%, #f5576c 100%);
    --gradient-success: linear-gradient(135deg, #4facfe 0%, #00f2fe 100%);
    
    /* Typography */
    --font-primary: 'Inter', sans-serif;
    --font-display: 'Space Grotesk', 'Inter', sans-serif;
    
    /* Spacing */
    --section-padding: 80px;
    --spacing-xs: 0.25rem;
    --spacing-sm: 0.5rem;
    --spacing-md: 1rem;
    --spacing-lg: 1.5rem;
    --spacing-xl: 2rem;
    --spacing-2xl: 3rem;
    
    /* Border Radius */
    --radius-sm: 0.25rem;
    --radius-md: 0.5rem;
    --radius-lg: 0.75rem;
    --radius-xl: 1rem;
    --radius-full: 9999px;
    
    /* Shadows */
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1);
    
    /* Transitions */
    --transition-fast: all 0.15s ease;
    --transition-normal: all 0.3s ease;
    --transition-slow: all 0.5s ease;
}

/* ==========================================
   Base Styles
   ========================================== */

body {
    font-family: var(--font-primary);
    background: var(--bg-dark);
    color: var(--text-primary);
    overflow-x: hidden;
}

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

a {
    text-decoration: none;
    transition: all 0.3s ease;
}

p {
    color: #d4d4d8 !important;
    line-height: 1.7;
}

p.lead {
    color: #ffffff !important;
    font-weight: 400;
}


/* ==========================================
   Page Loader
   ========================================== */

.page-loader {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: var(--bg-dark);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 9999;
    transition: opacity 0.3s ease;
}

.page-loader.fade-out {
    opacity: 0;
}

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

.loader-logo {
    height: 80px;
    width: 80px;
    margin-bottom: 2rem;
    animation: logoFloat 1.5s ease-in-out infinite;
}

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

.loader-spinner {
    position: relative;
    width: 80px;
    height: 80px;
    margin: 0 auto;
}

.spinner-ring {
    position: absolute;
    width: 100%;
    height: 100%;
    border: 3px solid transparent;
    border-top-color: var(--primary);
    border-radius: 50%;
    animation: spin 1.5s cubic-bezier(0.5, 0, 0.5, 1) infinite;
}

.spinner-ring:nth-child(1) {
    animation-delay: -0.45s;
    border-top-color: var(--primary);
}

.spinner-ring:nth-child(2) {
    animation-delay: -0.3s;
    border-top-color: var(--secondary);
    width: 70%;
    height: 70%;
    top: 15%;
    left: 15%;
}

.spinner-ring:nth-child(3) {
    animation-delay: -0.15s;
    border-top-color: var(--accent);
    width: 40%;
    height: 40%;
    top: 30%;
    left: 30%;
}

@keyframes spin {
    0% {
        transform: rotate(0deg);
    }
    100% {
        transform: rotate(360deg);
    }
}

/* ==========================================
   Navigation
   ========================================== */

.navbar {
    background: rgba(10, 10, 15, 0.98);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    border-bottom: 1px solid rgba(102, 126, 234, 0.1);
    padding: 0.75rem 0;
    transition: all 0.3s ease;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
}

.navbar.scrolled {
    background: rgba(10, 10, 15, 1);
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.3);
    border-bottom-color: rgba(102, 126, 234, 0.2);
}

.navbar-brand {
    font-family: var(--font-display);
    font-size: 1.5rem;
    font-weight: 700;
    transition: all 0.3s ease;
    padding: 0.25rem 0;
}

.navbar-logo {
    height: 42px;
    width: auto;
    transition: all 0.3s ease;
    filter: drop-shadow(0 2px 4px rgba(0, 0, 0, 0.2));
}

.navbar-brand:hover .navbar-logo {
    filter: drop-shadow(0 4px 8px rgba(102, 126, 234, 0.4));
    transform: translateY(-1px);
}

.brand-text {
    color: var(--text-primary);
}

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

.nav-link {
    color: var(--text-secondary) !important;
    font-weight: 500;
    padding: 0.5rem 1rem !important;
    position: relative;
}

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

.nav-link::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 50%;
    transform: translateX(-50%);
    width: 0;
    height: 2px;
    background: var(--gradient-primary);
    transition: width 0.3s ease;
}

.nav-link:hover::after,
.nav-link.active::after {
    width: 80%;
}

/* ==========================================
   Buttons
   ========================================== */

.btn-primary {
    background: var(--gradient-primary);
    border: none;
    font-weight: 600;
    padding: 0.75rem 1.5rem;
    transition: all 0.3s ease;
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 10px 25px rgba(102, 126, 234, 0.4);
}

.btn-outline-light {
    border: 2px solid var(--border-color);
    color: var(--text-primary);
    font-weight: 600;
    padding: 0.75rem 1.5rem;
}

.btn-outline-light:hover {
    background: rgba(102, 126, 234, 0.1);
    border-color: var(--primary);
    color: var(--text-primary);
}

/* ==========================================
   Hero Section
   ========================================== */

.hero-section {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    padding-top: 80px;
    overflow: hidden;
}

.hero-background {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    z-index: 0;
}

.gradient-orb {
    position: absolute;
    border-radius: 50%;
    filter: blur(80px);
    opacity: 0.3;
    animation: float 20s infinite ease-in-out;
}

.orb-1 {
    width: 500px;
    height: 500px;
    background: var(--gradient-primary);
    top: -200px;
    right: -100px;
}

.orb-2 {
    width: 400px;
    height: 400px;
    background: var(--gradient-accent);
    bottom: -150px;
    left: -100px;
    animation-delay: 5s;
}

.orb-3 {
    width: 350px;
    height: 350px;
    background: var(--gradient-success);
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    animation-delay: 10s;
}

@keyframes float {
    0%, 100% {
        transform: translate(0, 0) scale(1);
    }
    33% {
        transform: translate(50px, -50px) scale(1.1);
    }
    66% {
        transform: translate(-30px, 30px) scale(0.9);
    }
}

.hero-section .container {
    position: relative;
    z-index: 1;
}

.floating-badges {
    position: relative;
    height: 120px;
    margin-bottom: 2rem;
}

.floating-badge {
    position: absolute;
    display: inline-flex;
    align-items: center;
    background: var(--bg-surface);
    border: 1px solid var(--border-color);
    padding: 0.875rem 1.5rem;
    border-radius: 50px;
    font-size: 0.9rem;
    font-weight: 600;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.3);
    animation: floatBadge 3s infinite ease-in-out;
    backdrop-filter: blur(10px);
    transition: all 0.3s ease;
}

.floating-badge i {
    font-size: 1.1rem;
}

.badge-1 {
    left: 5%;
    top: 0;
    background: linear-gradient(135deg, rgba(255, 193, 7, 0.1) 0%, rgba(255, 152, 0, 0.1) 100%);
    border-color: rgba(255, 193, 7, 0.3);
    color: #ffc107;
}

.badge-2 {
    right: 5%;
    top: 20px;
    animation-delay: 1s;
    background: linear-gradient(135deg, rgba(76, 175, 80, 0.1) 0%, rgba(56, 142, 60, 0.1) 100%);
    border-color: rgba(76, 175, 80, 0.3);
    color: #4caf50;
}

.badge-3 {
    left: 50%;
    transform: translateX(-50%);
    bottom: 0;
    animation-delay: 2s;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    border: 2px solid #667eea;
    color: #ffffff;
    font-size: 1rem;
    padding: 1rem 1.75rem;
    box-shadow: 0 15px 40px rgba(102, 126, 234, 0.4), 0 0 30px rgba(118, 75, 162, 0.3);
}

.badge-3 i {
    font-size: 1.25rem;
    animation: pulse 2s infinite;
}

@keyframes pulse {
    0%, 100% {
        transform: scale(1);
    }
    50% {
        transform: scale(1.2);
    }
}

@keyframes floatBadge {
    0%, 100% {
        transform: translateY(0);
    }
    50% {
        transform: translateY(-15px);
    }
}

.badge-3:hover {
    transform: translateX(-50%) translateY(-5px) scale(1.05);
    box-shadow: 0 20px 50px rgba(102, 126, 234, 0.5), 0 0 40px rgba(118, 75, 162, 0.4);
}

.hero-title {
    font-size: 4.5rem;
    font-weight: 800;
    line-height: 1.1;
    margin-bottom: 1.5rem;
    letter-spacing: -0.02em;
}

.gradient-text {
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    position: relative;
    display: inline-block;
}

.gradient-text::after {
    content: '';
    position: absolute;
    bottom: -10px;
    left: 0;
    width: 100%;
    height: 3px;
    background: var(--gradient-primary);
    border-radius: 2px;
    opacity: 0.5;
}

.hero-subtitle {
    font-size: 1.35rem;
    color: var(--text-secondary);
    line-height: 1.8;
    font-weight: 400;
    max-width: 700px;
    margin: 0 auto 2rem;
}

.hero-cta {
    margin-bottom: 3rem;
}

.hero-cta .btn {
    font-size: 1.1rem;
    padding: 1rem 2rem;
    border-radius: 0.75rem;
    font-weight: 600;
    letter-spacing: 0.01em;
}

.stat-number {
    font-family: var(--font-display);
    font-size: 3rem;
    font-weight: 700;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.stat-label {
    color: var(--text-secondary);
    font-size: 1rem;
}

/* ==========================================
   Sections
   ========================================== */

.section-title {
    font-size: 3rem;
    font-weight: 700;
    margin-bottom: 1rem;
}

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

/* ==========================================
   Feature Cards
   ========================================== */

.feature-card {
    background: var(--bg-surface);
    border: 1px solid var(--border-color);
    border-radius: 1rem;
    padding: 2rem;
    height: 100%;
    transition: all 0.3s ease;
}

.feature-card:hover {
    transform: translateY(-8px);
    border-color: var(--primary);
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.3);
    background: var(--bg-surface-hover);
}

.feature-icon {
    width: 60px;
    height: 60px;
    background: var(--gradient-primary);
    border-radius: 0.75rem;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.75rem;
    color: white;
    margin-bottom: 1.5rem;
}

.feature-title {
    font-size: 1.5rem;
    font-weight: 600;
    margin-bottom: 1rem;
}

.feature-description {
    color: var(--text-secondary);
    line-height: 1.7;
    margin-bottom: 0;
}

/* ==========================================
   Event Cards
   ========================================== */

.event-card {
    background: var(--bg-surface);
    border: 1px solid var(--border-color);
    border-radius: 1rem;
    overflow: hidden;
    transition: all 0.3s ease;
    height: 100%;
}

.event-card:hover {
    transform: translateY(-8px);
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.3);
    border-color: var(--primary);
}

.event-image {
    height: 200px;
    background: var(--gradient-primary);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 4rem;
    position: relative;
    overflow: hidden;
}

.event-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.event-badge {
    position: absolute;
    top: 1rem;
    right: 1rem;
    background: rgba(0, 0, 0, 0.8);
    backdrop-filter: blur(10px);
    color: white;
    padding: 0.5rem 1rem;
    border-radius: 50px;
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
}

.event-content {
    padding: 1.5rem;
}

.event-meta {
    display: flex;
    gap: 1rem;
    margin-bottom: 1rem;
    flex-wrap: wrap;
}

.event-date,
.event-mode {
    font-size: 0.875rem;
    color: var(--text-secondary);
}

.event-mode {
    padding: 0.25rem 0.75rem;
    border-radius: 50px;
    background: var(--bg-surface-hover);
    border: 1px solid var(--border-color);
}

.event-mode.online {
    background: rgba(14, 165, 233, 0.1);
    border-color: var(--info);
    color: var(--info);
}

.event-mode.offline {
    background: rgba(74, 222, 128, 0.1);
    border-color: var(--success);
    color: var(--success);
}

.event-mode.hybrid {
    background: rgba(251, 191, 36, 0.1);
    border-color: var(--warning);
    color: var(--warning);
}

.event-title {
    font-size: 1.5rem;
    font-weight: 600;
    margin-bottom: 1rem;
}

.event-description {
    color: var(--text-secondary);
    margin-bottom: 1rem;
    line-height: 1.6;
}

.event-tags {
    display: flex;
    gap: 0.5rem;
    flex-wrap: wrap;
    margin-bottom: 1rem;
}

.event-tag {
    font-size: 0.75rem;
    padding: 0.375rem 0.75rem;
    background: var(--bg-surface-hover);
    border: 1px solid var(--border-color);
    border-radius: 50px;
    color: var(--text-secondary);
}

.event-footer {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding-top: 1rem;
    border-top: 1px solid var(--border-color);
}

.event-prize {
    font-size: 1.25rem;
    font-weight: 700;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

/* ==========================================
   Partners
   ========================================== */

.partner-logo {
    background: var(--bg-surface);
    border: 1px solid var(--border-color);
    border-radius: 0.75rem;
    padding: 2rem 1.5rem;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.3s ease;
    min-height: 120px;
    text-align: center;
}

.partner-logo img {
    max-width: 100%;
    max-height: 60px;
    width: auto;
    height: auto;
    object-fit: contain;
    filter: grayscale(100%) brightness(1.2);
    opacity: 0.7;
    transition: all 0.3s ease;
}

.partner-logo:hover {
    border-color: var(--primary);
    transform: translateY(-8px);
    box-shadow: 0 15px 35px rgba(102, 126, 234, 0.2);
    background: var(--bg-surface-hover);
}

.partner-logo:hover img {
    filter: grayscale(0%) brightness(1);
    opacity: 1;
    transform: scale(1.05);
}

/* ==========================================
   CTA Section
   ========================================== */

.cta-section {
    background: var(--bg-surface);
    border-top: 1px solid var(--border-color);
    border-bottom: 1px solid var(--border-color);
}

/* ==========================================
   Footer
   ========================================== */

.footer {
    background: var(--bg-surface);
    border-top: 1px solid var(--border-color);
}

.footer-title {
    font-size: 1.125rem;
    font-weight: 600;
    margin-bottom: 1rem;
}

.footer-links {
    list-style: none;
    padding: 0;
    margin: 0;
}

.footer-links li {
    margin-bottom: 0.5rem;
}

.footer-links a {
    color: var(--text-secondary);
    transition: color 0.3s ease;
}

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

.social-links a {
    color: var(--text-secondary);
    font-size: 1.5rem;
    transition: all 0.3s ease;
}

.social-links a:hover {
    color: var(--primary);
    transform: translateY(-3px);
}

/* ==========================================
   Responsive Design
   ========================================== */

@media (max-width: 768px) {
    .hero-title {
        font-size: 2.5rem;
    }
    
    .section-title {
        font-size: 2rem;
    }
    
    .floating-badges {
        position: static;
        display: flex;
        flex-direction: column;
        align-items: center;
        gap: 0.5rem;
        height: auto;
    }
    
    .floating-badge {
        position: static;
        animation: none;
    }
    
    .stat-number {
        font-size: 2rem;
    }
}

/* ==========================================
   Utilities
   ========================================== */

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

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