/* ==========================================
   ADCC KOREA - Athletic Brutalism Design
   ========================================== */

/* CSS Variables */
:root {
    /* Colors */
    --color-primary: #dc2626;
    --color-primary-dark: #991b1b;
    --color-secondary: #eab308;
    --color-bg: #0a0a0a;
    --color-bg-secondary: #1a1a1a;
    --color-bg-tertiary: #2a2a2a;
    --color-text: #f5f5f5;
    --color-text-muted: #a3a3a3;
    --color-border: #404040;
    
    /* Typography */
    --font-display: 'Bebas Neue', sans-serif;
    --font-heading: 'Oswald', sans-serif;
    --font-body: 'Inter', sans-serif;
    
    /* Spacing */
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 2rem;
    --spacing-lg: 4rem;
    --spacing-xl: 6rem;
    
    /* Layout */
    --container-width: 1200px;
    --border-radius: 4px;
    --transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

/* Reset & Base */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-body);
    background: var(--color-bg);
    color: var(--color-text);
    line-height: 1.6;
    overflow-x: hidden;
}

.container {
    max-width: var(--container-width);
    margin: 0 auto;
    padding: 0 var(--spacing-md);
}

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

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

/* Navigation */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    background: rgba(10, 10, 10, 0.95);
    backdrop-filter: blur(10px);
    z-index: 1000;
    border-bottom: 1px solid var(--color-border);
}

.navbar .container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--spacing-sm) var(--spacing-md);
}

.logo {
    font-family: var(--font-display);
    font-size: 2rem;
    letter-spacing: 2px;
    color: var(--color-text);
}

.logo-highlight {
    color: var(--color-primary);
}

.nav-menu {
    display: flex;
    list-style: none;
    gap: var(--spacing-md);
}

.nav-link {
    font-family: var(--font-heading);
    font-size: 0.9rem;
    letter-spacing: 1px;
    text-transform: uppercase;
    padding: 0.5rem 1rem;
    position: relative;
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 1rem;
    right: 1rem;
    height: 2px;
    background: var(--color-primary);
    transform: scaleX(0);
    transition: transform var(--transition);
}

.nav-link:hover::after,
.nav-link.active::after {
    transform: scaleX(1);
}

.nav-toggle {
    display: none;
    flex-direction: column;
    gap: 4px;
    background: none;
    border: none;
    cursor: pointer;
}

.nav-toggle span {
    width: 25px;
    height: 2px;
    background: var(--color-text);
    transition: var(--transition);
}

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

.hero-background {
    position: absolute;
    inset: 0;
    background: 
        linear-gradient(135deg, 
            rgba(220, 38, 38, 0.1) 0%, 
            rgba(10, 10, 10, 0.9) 50%,
            rgba(10, 10, 10, 1) 100%
        );
    z-index: 0;
}

.hero-background::before {
    content: '';
    position: absolute;
    inset: 0;
    background-image: 
        repeating-linear-gradient(0deg, 
            transparent, 
            transparent 2px, 
            rgba(255, 255, 255, 0.03) 2px, 
            rgba(255, 255, 255, 0.03) 4px
        );
    animation: scan 8s linear infinite;
}

@keyframes scan {
    0% { transform: translateY(0); }
    100% { transform: translateY(100px); }
}

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

.hero-content {
    max-width: 800px;
}

.hero-label {
    font-family: var(--font-heading);
    font-size: 0.875rem;
    letter-spacing: 3px;
    color: var(--color-primary);
    margin-bottom: var(--spacing-sm);
    text-transform: uppercase;
}

.hero-title {
    font-family: var(--font-display);
    font-size: clamp(3rem, 10vw, 6rem);
    letter-spacing: 3px;
    line-height: 0.9;
    margin-bottom: var(--spacing-md);
    animation: fadeInUp 1s ease-out;
}

.hero-title-highlight {
    color: var(--color-primary);
    display: inline-block;
    position: relative;
}

.hero-title-highlight::after {
    content: '';
    position: absolute;
    bottom: -10px;
    left: 0;
    right: 0;
    height: 4px;
    background: var(--color-primary);
    transform: skewX(-20deg);
}

.hero-subtitle {
    font-size: 1.125rem;
    color: var(--color-text-muted);
    margin-bottom: var(--spacing-lg);
    animation: fadeInUp 1s ease-out 0.2s both;
}

.hero-cta {
    display: flex;
    gap: var(--spacing-sm);
    flex-wrap: wrap;
    animation: fadeInUp 1s ease-out 0.4s both;
}

.hero-stats {
    display: flex;
    gap: var(--spacing-lg);
    margin-top: var(--spacing-xl);
    animation: fadeInUp 1s ease-out 0.6s both;
}

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

.stat-number {
    font-family: var(--font-display);
    font-size: 3rem;
    color: var(--color-primary);
    line-height: 1;
}

.stat-label {
    font-size: 0.875rem;
    color: var(--color-text-muted);
    text-transform: uppercase;
    letter-spacing: 1px;
    margin-top: var(--spacing-xs);
}

.scroll-indicator {
    position: absolute;
    bottom: 40px;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 10px;
    font-size: 0.75rem;
    letter-spacing: 2px;
    color: var(--color-text-muted);
}

.scroll-line {
    width: 1px;
    height: 40px;
    background: linear-gradient(to bottom, var(--color-primary), transparent);
    animation: scrollPulse 2s ease-in-out infinite;
}

@keyframes scrollPulse {
    0%, 100% { opacity: 0.3; transform: translateY(0); }
    50% { opacity: 1; transform: translateY(10px); }
}

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

/* Buttons */
.btn {
    display: inline-block;
    padding: 1rem 2rem;
    font-family: var(--font-heading);
    font-size: 0.875rem;
    font-weight: 600;
    letter-spacing: 1px;
    text-transform: uppercase;
    border: 2px solid;
    cursor: pointer;
    transition: var(--transition);
    position: relative;
    overflow: hidden;
}

.btn::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: rgba(255, 255, 255, 0.1);
    transition: left 0.3s ease;
}

.btn:hover::before {
    left: 100%;
}

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

.btn-primary:hover {
    background: var(--color-primary-dark);
    border-color: var(--color-primary-dark);
    transform: translateY(-2px);
    box-shadow: 0 10px 25px rgba(220, 38, 38, 0.3);
}

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

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

.btn-outline {
    background: transparent;
    border-color: var(--color-border);
    color: var(--color-text);
}

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

/* Section Styles */
section {
    padding: var(--spacing-xl) 0;
    position: relative;
}

.section-header {
    margin-bottom: var(--spacing-lg);
}

.section-label {
    font-family: var(--font-heading);
    font-size: 0.875rem;
    letter-spacing: 3px;
    color: var(--color-primary);
    text-transform: uppercase;
    display: block;
    margin-bottom: var(--spacing-xs);
}

.section-title {
    font-family: var(--font-display);
    font-size: clamp(2rem, 5vw, 3.5rem);
    letter-spacing: 2px;
}

.section-cta {
    margin-top: var(--spacing-lg);
    text-align: center;
}

/* Upcoming Event Section */
.upcoming-event {
    background: var(--color-bg-secondary);
}

.event-card {
    display: grid;
    grid-template-columns: auto 1fr auto;
    gap: var(--spacing-md);
    background: var(--color-bg-tertiary);
    border: 1px solid var(--color-border);
    border-left: 4px solid var(--color-primary);
    padding: var(--spacing-md);
    transition: var(--transition);
}

.event-card:hover {
    transform: translateX(10px);
    border-left-width: 8px;
}

.event-date {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    background: var(--color-primary);
    padding: var(--spacing-sm);
    min-width: 100px;
    text-align: center;
}

.date-month {
    font-family: var(--font-heading);
    font-size: 0.875rem;
    letter-spacing: 2px;
}

.date-day {
    font-family: var(--font-display);
    font-size: 3rem;
    line-height: 1;
}

.date-year {
    font-size: 0.875rem;
    color: rgba(255, 255, 255, 0.7);
}

.event-info h4 {
    font-family: var(--font-heading);
    font-size: 1.5rem;
    margin-bottom: var(--spacing-xs);
}

.event-description {
    color: var(--color-text-muted);
    margin: var(--spacing-sm) 0;
}

.event-meta {
    display: flex;
    gap: var(--spacing-md);
    flex-wrap: wrap;
    font-size: 0.875rem;
    color: var(--color-text-muted);
}

.event-cta {
    align-self: center;
    font-family: var(--font-heading);
    color: var(--color-primary);
    white-space: nowrap;
    font-size: 1.125rem;
}

/* News Section */
.news-preview {
    background: var(--color-bg);
}

.news-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--spacing-md);
}

.news-card {
    background: var(--color-bg-secondary);
    border: 1px solid var(--color-border);
    overflow: hidden;
    transition: var(--transition);
}

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

.news-image-placeholder {
    height: 200px;
    background: linear-gradient(135deg, var(--color-bg-tertiary), var(--color-bg-secondary));
    display: flex;
    align-items: center;
    justify-content: center;
    font-family: var(--font-display);
    font-size: 3rem;
    color: var(--color-border);
    letter-spacing: 3px;
}

.news-content {
    padding: var(--spacing-md);
}

.news-date {
    font-size: 0.75rem;
    color: var(--color-text-muted);
    text-transform: uppercase;
    letter-spacing: 1px;
}

.news-title {
    font-size: 1.25rem;
    margin: var(--spacing-xs) 0;
}

.news-excerpt {
    color: var(--color-text-muted);
    font-size: 0.9rem;
    margin: var(--spacing-sm) 0;
    line-height: 1.6;
}

.news-link {
    color: var(--color-primary);
    font-family: var(--font-heading);
    font-size: 0.875rem;
    text-transform: uppercase;
    letter-spacing: 1px;
}

.news-link:hover {
    text-decoration: underline;
}

/* About Preview Section */
.about-preview {
    background: var(--color-bg-secondary);
}

.about-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-xl);
    align-items: center;
}

.about-description {
    font-size: 1.125rem;
    line-height: 1.8;
    color: var(--color-text-muted);
    margin: var(--spacing-md) 0;
}

.about-features {
    list-style: none;
    margin: var(--spacing-md) 0;
}

.about-features li {
    padding: var(--spacing-xs) 0;
    color: var(--color-text-muted);
    font-size: 1rem;
}

.about-features li::before {
    content: '✓';
    color: var(--color-primary);
    font-weight: bold;
    margin-right: var(--spacing-xs);
}

.about-visual {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--spacing-sm);
}

.visual-box {
    aspect-ratio: 1;
    background: var(--color-bg-tertiary);
    border: 2px solid var(--color-border);
    display: flex;
    align-items: center;
    justify-content: center;
    transition: var(--transition);
    position: relative;
    overflow: hidden;
}

.visual-box::before {
    content: '';
    position: absolute;
    inset: 0;
    background: var(--color-primary);
    transform: translateY(100%);
    transition: transform 0.4s ease;
}

.visual-box:hover::before {
    transform: translateY(0);
}

.visual-box:nth-child(3) {
    grid-column: 1 / -1;
}

.visual-text {
    font-family: var(--font-display);
    font-size: 2rem;
    letter-spacing: 3px;
    position: relative;
    z-index: 1;
}

.visual-box:hover .visual-text {
    color: white;
}

/* Footer */
.footer {
    background: var(--color-bg-tertiary);
    border-top: 1px solid var(--color-border);
    padding: var(--spacing-lg) 0 var(--spacing-md);
}

.footer-content {
    display: grid;
    grid-template-columns: 2fr 3fr;
    gap: var(--spacing-lg);
    margin-bottom: var(--spacing-md);
}

.footer-logo {
    font-family: var(--font-display);
    font-size: 2rem;
    letter-spacing: 2px;
    margin-bottom: var(--spacing-xs);
}

.footer-logo span {
    color: var(--color-primary);
}

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

.footer-links {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--spacing-md);
}

.footer-column h4 {
    font-family: var(--font-heading);
    font-size: 1rem;
    margin-bottom: var(--spacing-sm);
    text-transform: uppercase;
    letter-spacing: 1px;
}

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

.footer-column li {
    margin-bottom: var(--spacing-xs);
}

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

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

.footer-bottom {
    border-top: 1px solid var(--color-border);
    padding-top: var(--spacing-md);
    text-align: center;
    color: var(--color-text-muted);
    font-size: 0.875rem;
}

/* Responsive Design */
@media (max-width: 768px) {
    .nav-menu {
        position: fixed;
        top: 70px;
        left: -100%;
        flex-direction: column;
        background: var(--color-bg);
        width: 100%;
        padding: var(--spacing-md);
        border-top: 1px solid var(--color-border);
        transition: left 0.3s ease;
    }
    
    .nav-menu.active {
        left: 0;
    }
    
    .nav-toggle {
        display: flex;
    }
    
    .hero-stats {
        flex-direction: column;
        gap: var(--spacing-md);
    }
    
    .event-card {
        grid-template-columns: 1fr;
    }
    
    .event-cta {
        justify-self: start;
    }
    
    .about-content {
        grid-template-columns: 1fr;
    }
    
    .footer-content {
        grid-template-columns: 1fr;
    }
    
    .footer-links {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 480px) {
    :root {
        --spacing-md: 1rem;
        --spacing-lg: 2rem;
        --spacing-xl: 3rem;
    }
    
    .hero-cta {
        flex-direction: column;
    }
    
    .btn {
        width: 100%;
        text-align: center;
    }
    
    .news-grid {
        grid-template-columns: 1fr;
    }
}