/* ============================================
   Global Styles - Gaminori Gaming Portal
   ============================================ */

/* CSS Custom Properties for Theming */
:root {
    /* Colors - Light Theme (default) */
    --bg-primary: #ffffff;
    --bg-secondary: #f5f5f5;
    --text-primary: #1a1a1a;
    --text-secondary: #666666;
    --border-color: #e0e0e0;
    --accent-primary: #6366f1;
    --accent-secondary: #e0e7ff;
    --accent-hover: #4f46e5;

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

    /* Typography */
    --font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Noto Sans CJK KR', 'Roboto', 'Helvetica Neue', sans-serif;
    --font-size-sm: 0.875rem;
    --font-size-base: 1rem;
    --font-size-lg: 1.125rem;
    --font-size-xl: 1.5rem;
    --font-size-2xl: 2rem;

    /* Border Radius */
    --radius-sm: 0.375rem;
    --radius-md: 0.5rem;
    --radius-lg: 0.75rem;
    --radius-xl: 1rem;

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

    /* Shadow */
    --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 8px 16px rgba(0, 0, 0, 0.15);
}

/* ============================================
   Reset & Base Styles
   ============================================ */

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
    font-size: 16px;
}

body {
    font-family: var(--font-family);
    background-color: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.5;
    transition: background-color var(--transition-base), color var(--transition-base);
}

/* ============================================
   Typography
   ============================================ */

h1, h2, h3, h4, h5, h6 {
    font-weight: 600;
    line-height: 1.3;
    margin-bottom: var(--spacing-md);
}

h1 {
    font-size: var(--font-size-2xl);
}

h2 {
    font-size: var(--font-size-xl);
}

h3 {
    font-size: var(--font-size-lg);
}

h4, h5, h6 {
    font-size: var(--font-size-base);
}

p {
    margin-bottom: var(--spacing-md);
    color: var(--text-secondary);
}

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

a:hover {
    color: var(--accent-hover);
}

/* ============================================
   Header & Navigation
   ============================================ */

.header {
    background-color: var(--bg-secondary);
    border-bottom: 1px solid var(--border-color);
    position: sticky;
    top: 0;
    z-index: 100;
    transition: background-color var(--transition-base);
}

.header-container {
    max-width: 1400px;
    margin: 0 auto;
    padding: var(--spacing-md) var(--spacing-lg);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.logo {
    display: flex;
    align-items: center;
}

.logo h1 {
    margin: 0;
    font-size: 1.75rem;
    white-space: nowrap;
}

.nav-menu {
    display: flex;
    flex: 1;
    justify-content: center;
    list-style: none;
}

.nav-menu ul {
    display: flex;
    gap: 2rem;
    list-style: none;
    margin: 0;
    padding: 0;
}

.nav-link {
    font-weight: 500;
    padding: 0.5rem 1rem;
    border-radius: var(--radius-md);
    transition: background-color var(--transition-fast);
    position: relative;
}

.nav-link:hover {
    background-color: var(--accent-secondary);
}

.nav-link.active {
    color: var(--accent-primary);
}

.nav-link.active::after {
    content: '';
    position: absolute;
    bottom: -0.5rem;
    left: 0;
    right: 0;
    height: 2px;
    background-color: var(--accent-primary);
    border-radius: 1px;
}

.header-controls {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
}

.theme-toggle {
    background: none;
    border: none;
    font-size: 1.5rem;
    cursor: pointer;
    padding: var(--spacing-sm);
    border-radius: var(--radius-md);
    transition: background-color var(--transition-fast);
    display: flex;
    align-items: center;
    justify-content: center;
}

.theme-toggle:hover {
    background-color: var(--accent-secondary);
}

.theme-icon {
    display: inline-block;
    transition: transform var(--transition-base);
}

.theme-toggle:hover .theme-icon {
    transform: rotate(20deg);
}

.menu-toggle {
    display: none;
    flex-direction: column;
    background: none;
    border: none;
    cursor: pointer;
    padding: var(--spacing-sm);
    gap: 0.375rem;
}

.menu-toggle span {
    width: 24px;
    height: 2px;
    background-color: var(--text-primary);
    border-radius: 1px;
    transition: all var(--transition-fast);
}

.menu-toggle.active span:nth-child(1) {
    transform: rotate(45deg) translate(6px, 6px);
}

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

.menu-toggle.active span:nth-child(3) {
    transform: rotate(-45deg) translate(8px, -8px);
}

/* ============================================
   Mobile Menu
   ============================================ */

.mobile-menu-overlay {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-color: rgba(0, 0, 0, 0.5);
    z-index: 50;
    animation: fadeIn var(--transition-fast);
}

.mobile-menu-overlay.active {
    display: block;
}

.mobile-menu {
    position: absolute;
    top: 70px;
    right: 0;
    background-color: var(--bg-secondary);
    border-left: 1px solid var(--border-color);
    min-width: 250px;
    box-shadow: var(--shadow-lg);
    animation: slideIn var(--transition-base);
}

.mobile-menu-link {
    display: block;
    padding: var(--spacing-md) var(--spacing-lg);
    color: var(--text-primary);
    border-bottom: 1px solid var(--border-color);
    transition: background-color var(--transition-fast);
}

.mobile-menu-link:hover {
    background-color: var(--accent-secondary);
}

/* ============================================
   Main Content
   ============================================ */

.main {
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 var(--spacing-lg);
    min-height: calc(100vh - 200px);
}

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

.hero {
    padding: var(--spacing-2xl) 0;
    text-align: center;
    border-bottom: 1px solid var(--border-color);
}

.hero h2 {
    font-size: 2.5rem;
    color: var(--text-primary);
    margin-bottom: var(--spacing-md);
}

.hero p {
    font-size: var(--font-size-lg);
    color: var(--text-secondary);
    margin-bottom: 0;
}

/* ============================================
   Filters & Categories
   ============================================ */

.filters-section {
    padding: var(--spacing-2xl) 0;
}

.filters-section h3 {
    margin-bottom: var(--spacing-lg);
    color: var(--text-primary);
}

.category-filters {
    display: flex;
    gap: var(--spacing-md);
    flex-wrap: wrap;
}

.filter-btn {
    padding: 0.5rem 1.5rem;
    background-color: var(--bg-secondary);
    border: 2px solid var(--border-color);
    color: var(--text-primary);
    border-radius: var(--radius-md);
    cursor: pointer;
    font-size: var(--font-size-base);
    font-weight: 500;
    transition: all var(--transition-base);
}

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

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

/* ============================================
   Games Grid
   ============================================ */

.games-section {
    padding: var(--spacing-2xl) 0;
}

.games-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: var(--spacing-lg);
}

.game-card {
    background-color: var(--bg-secondary);
    border-radius: var(--radius-lg);
    overflow: hidden;
    transition: all var(--transition-base);
    cursor: pointer;
    border: 1px solid var(--border-color);
    display: flex;
    flex-direction: column;
}

.game-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-lg);
    border-color: var(--accent-primary);
}

.game-thumbnail {
    width: 100%;
    aspect-ratio: 16 / 9;
    background: linear-gradient(135deg, var(--accent-primary), var(--accent-secondary));
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 3rem;
    color: white;
}

.game-info {
    padding: var(--spacing-lg);
    flex: 1;
    display: flex;
    flex-direction: column;
}

.game-category {
    display: inline-block;
    background-color: var(--accent-secondary);
    color: var(--accent-primary);
    padding: 0.25rem 0.75rem;
    border-radius: var(--radius-md);
    font-size: var(--font-size-sm);
    font-weight: 600;
    margin-bottom: var(--spacing-md);
    width: fit-content;
}

.game-name {
    font-size: var(--font-size-lg);
    font-weight: 600;
    margin-bottom: var(--spacing-sm);
    color: var(--text-primary);
}

.game-description {
    font-size: var(--font-size-sm);
    color: var(--text-secondary);
    margin-bottom: 0;
    flex-grow: 1;
}

.game-footer {
    margin-top: var(--spacing-md);
    padding-top: var(--spacing-md);
    border-top: 1px solid var(--border-color);
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-size: var(--font-size-sm);
    color: var(--text-secondary);
}

.loading-spinner {
    grid-column: 1 / -1;
    padding: var(--spacing-2xl);
    text-align: center;
    color: var(--text-secondary);
}

/* ============================================
   Leaderboard Section
   ============================================ */

.leaderboard-section {
    padding: var(--spacing-2xl) 0;
    border-top: 1px solid var(--border-color);
}

.leaderboard-section h2 {
    margin-bottom: var(--spacing-2xl);
    text-align: center;
}

.leaderboard-placeholder {
    text-align: center;
    color: var(--text-secondary);
    padding: var(--spacing-2xl);
}

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

.footer {
    background-color: var(--bg-secondary);
    border-top: 1px solid var(--border-color);
    margin-top: var(--spacing-2xl);
}

.footer-content {
    max-width: 1400px;
    margin: 0 auto;
    padding: var(--spacing-2xl) var(--spacing-lg);
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: var(--spacing-lg);
}

.footer-content p {
    margin: 0;
    color: var(--text-secondary);
    font-size: var(--font-size-sm);
}

.footer-nav {
    display: flex;
    gap: var(--spacing-lg);
}

.footer-link {
    color: var(--text-secondary);
    font-size: var(--font-size-sm);
    transition: color var(--transition-fast);
}

.footer-link:hover {
    color: var(--accent-primary);
}

/* ============================================
   Animations
   ============================================ */

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

@keyframes slideIn {
    from {
        transform: translateX(100%);
        opacity: 0;
    }
    to {
        transform: translateX(0);
        opacity: 1;
    }
}

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

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

@media (max-width: 1024px) {
    .games-grid {
        grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
        gap: var(--spacing-md);
    }

    .hero h2 {
        font-size: 2rem;
    }

    .footer-content {
        flex-direction: column;
        text-align: center;
    }

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

@media (max-width: 768px) {
    .header-container {
        padding: var(--spacing-md);
        gap: var(--spacing-md);
    }

    .logo h1 {
        font-size: 1.25rem;
    }

    .nav-menu {
        display: none;
    }

    .menu-toggle {
        display: flex;
    }

    .main {
        padding: 0 var(--spacing-md);
    }

    .games-grid {
        grid-template-columns: repeat(auto-fill, minmax(150px, 1fr));
        gap: var(--spacing-md);
    }

    .game-card {
        border-radius: var(--radius-md);
    }

    .game-info {
        padding: var(--spacing-md);
    }

    .game-thumbnail {
        font-size: 2rem;
    }

    .game-name {
        font-size: 1rem;
    }

    .game-description {
        font-size: var(--font-size-sm);
        display: -webkit-box;
        -webkit-line-clamp: 2;
        -webkit-box-orient: vertical;
        overflow: hidden;
    }

    .hero {
        padding: var(--spacing-xl) 0;
    }

    .hero h2 {
        font-size: 1.5rem;
    }

    .hero p {
        font-size: 1rem;
    }

    .filters-section {
        padding: var(--spacing-xl) 0;
    }

    .category-filters {
        gap: var(--spacing-sm);
    }

    .filter-btn {
        padding: 0.375rem 1rem;
        font-size: var(--font-size-sm);
    }

    .games-section {
        padding: var(--spacing-xl) 0;
    }

    .footer-content {
        padding: var(--spacing-lg);
    }

    .footer-content p {
        font-size: var(--font-size-sm);
    }

    .footer-link {
        font-size: var(--font-size-sm);
    }
}

@media (max-width: 480px) {
    html {
        font-size: 14px;
    }

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

    .game-info {
        padding: var(--spacing-sm);
    }

    .game-name {
        font-size: 0.875rem;
    }

    .game-category {
        font-size: 0.75rem;
        padding: 0.25rem 0.5rem;
    }

    .category-filters {
        gap: var(--spacing-xs);
    }

    .filter-btn {
        padding: 0.35rem 0.75rem;
        font-size: var(--font-size-sm);
    }

    .hero h2 {
        font-size: 1.25rem;
    }

    .hero p {
        font-size: 0.875rem;
    }
}