/* ==========================================================================
   FUNGATE SKILLZ LOBBY STYLE
   ========================================================================== */

/* 1. RESET & BASE STYLES */
/* Prevent horizontal scrolling */
html, body {
    overflow-x: hidden; /* Prevent horizontal scrolling */
}

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

/* Custom Scrollbar Styles */
/* Webkit browsers (Chrome, Safari, Edge) */
::-webkit-scrollbar {
    width: 8px;
    height: 8px;
}

::-webkit-scrollbar-track {
    background: var(--bg-secondary);
    border-radius: 4px;
}

::-webkit-scrollbar-thumb {
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    border-radius: 4px;
    transition: all 0.3s ease;
}

::-webkit-scrollbar-thumb:hover {
    background: linear-gradient(135deg, var(--primary-hover), var(--accent-color));
    transform: scale(1.1);
}

::-webkit-scrollbar-corner {
    background: var(--bg-secondary);
}

/* Firefox */
html {
    scrollbar-width: thin;
    scrollbar-color: var(--primary-color) var(--bg-secondary);
}

/* Font imports */
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600;700;800;900&display=swap');

/* 2. CSS VARIABLES - Skillz dark theme */
:root {
    /* Colors - Skillz color scheme */
    --primary-color: #47debc;
    --primary-hover: #3bc4a3;
    --secondary-color: #6c5ce7;
    --accent-color: #fd79a8;
    --bg-primary: #0d0d0d;
    --bg-secondary: #1a1a1a;
    --bg-tertiary: #2d2d2d;
    --text-primary: #ffffff;
    --text-secondary: #b3b3b3;
    --text-muted: #666666;
    --border-color: rgba(255, 255, 255, 0.1);
    --shadow-color: rgba(0, 0, 0, 0.5);
    
    /* Layout */
    --sidebar-width: 280px;
    --header-height: 70px;
    --border-radius: 12px;
    --border-radius-sm: 8px;
    
    /* Spacing */
    --spacing-xs: 8px;
    --spacing-sm: 12px;
    --spacing-md: 16px;
    --spacing-lg: 24px;
    --spacing-xl: 32px;
    
    /* Typography */
    --font-base: 14px;
    --font-sm: 12px;
    --font-lg: 16px;
    --font-xl: 18px;
    --font-2xl: 24px;
    --font-3xl: 32px;
    
    /* Transitions */
    --transition-fast: 0.2s ease;
    --transition-normal: 0.3s ease;
}

/* 3. BASE TYPOGRAPHY & LAYOUT */
body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    background: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.6;
    font-size: var(--font-base);
    overflow-x: hidden;
}

/* 4. MAIN LAYOUT - Skillz two-column layout */
.skillz-lobby-layout {
    display: flex;
    min-height: 100vh;
    background: var(--bg-primary);
    overflow-x: hidden; /* Prevent horizontal overflow */
    width: 100%;
}

/* 5. LEFT SIDEBAR - Skillz-style sidebar */
.lobby-sidebar {
    width: var(--sidebar-width);
    background: linear-gradient(180deg, var(--bg-secondary) 0%, rgba(25, 25, 25, 0.95) 100%);
    border-right: 1px solid var(--border-color);
    height: 100vh;
    position: fixed;
    left: 0;
    top: 0;
    z-index: 100;
    overflow-y: auto;
    transition: var(--transition-normal);
}

/* Sidebar specific scrollbar */
.lobby-sidebar::-webkit-scrollbar {
    width: 6px;
}

.lobby-sidebar::-webkit-scrollbar-track {
    background: rgba(71, 222, 188, 0.1);
    border-radius: 3px;
}

.lobby-sidebar::-webkit-scrollbar-thumb {
    background: rgba(71, 222, 188, 0.6);
    border-radius: 3px;
}

.lobby-sidebar::-webkit-scrollbar-thumb:hover {
    background: var(--primary-color);
}

.sidebar-content {
    padding: var(--spacing-lg);
    height: 100%;
}

/* Logo */
.sidebar-logo {
    margin-bottom: var(--spacing-xl);
    padding-bottom: var(--spacing-lg);
    border-bottom: 1px solid var(--border-color);
    text-align: center;
}

.logo-image {
    height: 80px;
    width: 100%;
    object-fit: contain;
}

/* Navigation */
.sidebar-navigation {
    flex: 1;
}

.nav-section {
    margin-bottom: var(--spacing-sm);
}

.nav-item {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-sm) var(--spacing-md);
    border-radius: var(--border-radius-sm);
    cursor: pointer;
    transition: var(--transition-fast);
    color: var(--text-secondary);
    font-weight: 500;
}

.nav-item:hover {
    background: rgba(71, 222, 188, 0.1);
    color: var(--primary-color);
}

.nav-item.active {
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    color: white;
}

.nav-icon {
    width: 20px;
    height: 20px;
    flex-shrink: 0;
}

.nav-text {
    font-size: var(--font-base);
    font-weight: 500;
}

/* Sub Menu */
.nav-submenu {
    max-height: 0;
    overflow: hidden;
    transition: max-height var(--transition-normal);
    margin-left: var(--spacing-lg);
    margin-top: var(--spacing-xs);
}

.nav-submenu.show {
    max-height: 300px;
}

.nav-subitem {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    padding: var(--spacing-xs) var(--spacing-md);
    border-radius: var(--border-radius-sm);
    cursor: pointer;
    transition: var(--transition-fast);
    color: var(--text-muted);
    font-size: var(--font-sm);
    margin-bottom: 2px;
}

.nav-subitem:hover {
    background: rgba(71, 222, 188, 0.05);
    color: var(--primary-color);
}

.category-icon {
    font-size: 14px;
}

.category-text {
    font-size: var(--font-sm);
}

/* 6. MAIN CONTENT AREA */
.lobby-main {
    flex: 1;
    margin-left: var(--sidebar-width);
    background: var(--bg-primary);
    min-height: 100vh;
    overflow-x: hidden;
}

/* Main content scrollbar */
.lobby-main::-webkit-scrollbar {
    width: 8px;
}

.lobby-main::-webkit-scrollbar-track {
    background: rgba(0, 0, 0, 0.2);
    border-radius: 4px;
}

.lobby-main::-webkit-scrollbar-thumb {
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    border-radius: 4px;
}

.lobby-main::-webkit-scrollbar-thumb:hover {
    background: linear-gradient(135deg, var(--primary-hover), var(--accent-color));
}

/* Mobile Header - Hidden by default */
.mobile-header {
    display: none;
    position: fixed; /* Fixed to ensure it stays at top */
    top: 0;
    left: 0;
    right: 0;
    width: 100%;
    background: linear-gradient(135deg, var(--bg-secondary), rgba(26, 26, 26, 0.95));
    backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--border-color);
    padding: var(--spacing-md);
    z-index: 1001; /* Ensure it's above sidebar */
    height: 60px;
    box-sizing: border-box;
}

.header-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 100%;
    width: 100%;
    max-width: 100%;
    box-sizing: border-box;
}

.mobile-logo {
    display: flex;
    align-items: center;
    height: 100%;
}

.mobile-logo img {
    height: 50px;
    width: auto;
    object-fit: contain;
    max-width: 120px;
}

.mobile-menu-btn {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 44px;
    height: 44px;
    background: rgba(71, 222, 188, 0.1);
    border: 1px solid var(--primary-color);
    border-radius: var(--border-radius-sm);
    color: var(--primary-color);
    cursor: pointer;
    transition: var(--transition-fast);
}

.mobile-menu-btn:hover {
    background: var(--primary-color);
    color: white;
}

/* Mobile Overlay */
.mobile-overlay {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.7);
    backdrop-filter: blur(5px);
    z-index: 999;
    opacity: 0;
    visibility: hidden;
    transition: var(--transition-normal);
}

/* 7. CONTENT SECTIONS */
/* Featured Carousel */
.featured-section {
    padding: var(--spacing-lg) var(--spacing-lg) var(--spacing-xl);
}

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

.section-title {
    font-size: var(--font-2xl);
    font-weight: 700;
    color: var(--text-primary);
    margin-bottom: var(--spacing-sm);
}

.featured-carousel {
    position: relative;
    border-radius: var(--border-radius);
    overflow: hidden;
    margin: var(--spacing-lg); /* Add margins, not full width */
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.4);
}

.featured-swiper {
    position: relative;
    width: 100%;
    border-radius: var(--border-radius);
}

/* 使用伪元素创建 2.25:1 的宽高比容器 */
.featured-swiper::before {
    content: '';
    display: block;
    padding-top: 44.44%; /* 1 / 2.25 = 0.4444 = 44.44% */
}

.featured-swiper .swiper-wrapper {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
}

.featured-swiper .swiper-slide {
    height: 100%;
}

.featured-game-slide {
    position: relative;
    width: 100%;
    height: 100%;
    background: var(--bg-secondary);
    border-radius: var(--border-radius);
    overflow: hidden;
}

.featured-game-slide img {
    width: 100%;
    height: 100%;
    object-fit: contain; /* 保持图片原始比例，不裁剪不变形 */
    background: var(--bg-secondary); /* 如果图片比例不完全匹配，显示背景色 */
}

/* Swiper Pagination */
.swiper-pagination {
    bottom: var(--spacing-md) !important;
}

.swiper-pagination-bullet {
    background: rgba(255, 255, 255, 0.5) !important;
    opacity: 1 !important;
    width: 12px !important;
    height: 12px !important;
}

.swiper-pagination-bullet-active {
    background: var(--primary-color) !important;
}

/* Categories Grid */
.categories-nav {
    padding: var(--spacing-lg);
    background: linear-gradient(135deg, rgba(26, 26, 26, 0.8), rgba(45, 45, 45, 0.6));
    backdrop-filter: blur(10px);
    border-radius: var(--border-radius);
    margin: var(--spacing-lg);
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.3);
}

.categories-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: var(--spacing-md);
}

.category-item {
    background: linear-gradient(135deg, rgba(71, 222, 188, 0.1), rgba(108, 92, 231, 0.1));
    border: 1px solid rgba(71, 222, 188, 0.2);
    backdrop-filter: blur(5px);
    border-radius: var(--border-radius);
    padding: var(--spacing-lg);
    text-align: center;
    cursor: pointer;
    transition: var(--transition-fast);
    box-shadow: 0 4px 16px rgba(0, 0, 0, 0.2);
}

.category-item:hover {
    transform: translateY(-4px);
    box-shadow: 0 8px 32px rgba(71, 222, 188, 0.2);
    border-color: var(--primary-color);
}

.category-icon-wrapper {
    margin-bottom: var(--spacing-sm);
}

.category-emoji {
    font-size: var(--font-3xl);
}

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

.category-description {
    font-size: var(--font-sm);
    color: var(--text-secondary);
}

/* Game Sections */
.game-sections {
    padding: 0 var(--spacing-lg) var(--spacing-xl);
}

.game-section {
    margin-bottom: var(--spacing-xl);
    background: linear-gradient(135deg, rgba(26, 26, 26, 0.6), rgba(45, 45, 45, 0.4));
    backdrop-filter: blur(10px);
    border-radius: var(--border-radius);
    padding: var(--spacing-lg);
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.3);
}

.games-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(180px, 1fr));
    gap: var(--spacing-md);
}

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

.game-item:hover {
    transform: translateY(-4px);
    box-shadow: 0 8px 24px rgba(71, 222, 188, 0.2);
    border-color: var(--primary-color);
}

.game-item img {
    width: 100%;
    aspect-ratio: 1 / 1; /* 保持 1:1 正方形比例 (240x240) */
    object-fit: contain; /* 完整显示图标，不裁剪不变形 */
    background: var(--bg-secondary);
}

/* 兼容不支持 aspect-ratio 的浏览器 */
@supports not (aspect-ratio: 1 / 1) {
    .game-item img {
        height: 0;
        padding-bottom: 100%; /* 1:1 正方形 */
    }
}

.game-item h4 {
    padding: var(--spacing-sm);
    font-size: var(--font-sm);
    font-weight: 600;
    color: var(--text-primary);
    text-align: center;
}

/* Section highlight animation */
.section-highlight {
    animation: sectionPulse 0.6s ease-in-out;
    border: 2px solid var(--primary-color);
    border-radius: var(--border-radius);
}

@keyframes sectionPulse {
    0% { transform: scale(1); }
    50% { transform: scale(1.02); }
    100% { transform: scale(1); }
}

/* Footer */
.lobby-footer {
    background: linear-gradient(135deg, #1a1a1a 0%, #2d2d2d 50%, #1a1a1a 100%);
    border-top: 1px solid rgba(71, 222, 188, 0.2);
    padding: 0;
    margin-top: var(--spacing-xl);
    width: 100%;
    position: relative;
    clear: both;
}

.footer-content {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-lg);
}

.footer-main {
    display: grid;
    grid-template-columns: 1fr 2fr;
    gap: var(--spacing-xl);
        padding: var(--spacing-xl) 0;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.footer-brand {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
}

.footer-logo {
    margin-bottom: var(--spacing-sm);
}

.footer-logo img {
    height: 60px;
    width: auto;
    object-fit: contain;
}

.footer-description {
    color: var(--text-secondary);
    font-size: var(--font-base);
    line-height: 1.6;
    margin-bottom: var(--spacing-md);
}

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

.footer-column h4 {
    color: var(--text-primary);
    font-size: var(--font-lg);
    font-weight: 600;
    margin-bottom: var(--spacing-md);
    position: relative;
}

.footer-column h4::after {
    content: '';
    position: absolute;
    bottom: -4px;
    left: 0;
    width: 30px;
    height: 2px;
    background: linear-gradient(90deg, var(--primary-color), var(--secondary-color));
    border-radius: 1px;
}

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

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

.footer-column ul li a {
    color: var(--text-secondary);
    text-decoration: none;
    font-size: var(--font-sm);
    transition: var(--transition-fast);
    position: relative;
    padding-left: var(--spacing-sm);
}

.footer-column ul li a::before {
    content: '▸';
    position: absolute;
    left: 0;
    color: var(--primary-color);
    opacity: 0;
    transform: translateX(-5px);
    transition: var(--transition-fast);
}

.footer-column ul li a:hover {
    color: var(--primary-color);
    padding-left: var(--spacing-md);
}

.footer-column ul li a:hover::before {
    opacity: 1;
    transform: translateX(0);
}

.footer-bottom {
    padding: var(--spacing-lg) 0;
    background: rgba(0, 0, 0, 0.3);
}

.footer-bottom-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
        gap: var(--spacing-sm);
    }
    
.footer-bottom-content p {
    color: var(--text-muted);
    font-size: var(--font-sm);
    margin: 0;
}

.footer-tagline {
    font-style: italic;
    color: var(--primary-color) !important;
}

/* 8. RESPONSIVE DESIGN */
/* Tablet */
@media (max-width: 1024px) {
    :root {
        --sidebar-width: 35%;
    }
    
    .lobby-sidebar {
        max-width: 320px;
    }
}

/* Mobile */
@media (max-width: 768px) {
    :root {
        --sidebar-width: 70%;
        --header-height: 60px;
        --spacing-xs: 4px;
        --spacing-sm: 8px;
        --spacing-md: 12px;
        --spacing-lg: 16px;
        --spacing-xl: 20px;
    }
    
    /* Sidebar mobile optimization */
    .lobby-sidebar {
        position: fixed;
        top: 60px; /* Start below header, avoid overlap */
        left: 0;
        height: calc(100vh - 60px); /* Subtract header height */
        z-index: 1000;
        transform: translateX(-100%);
        transition: transform 0.3s cubic-bezier(0.25, 0.8, 0.25, 1);
        box-shadow: 2px 0 10px rgba(0, 0, 0, 0.3);
        backdrop-filter: blur(10px);
        background: rgba(45, 45, 45, 0.95);
        max-width: 320px;
    }
    
    .lobby-sidebar.active {
        transform: translateX(0);
    }
    
    /* Main content mobile optimization */
    .lobby-main {
        margin-left: 0; /* No left margin on mobile */
        width: 100%;
        padding-top: 60px; /* Leave space for mobile-header */
    }
    
    /* Show mobile-header on mobile */
    .mobile-header {
        display: flex !important; /* Show on mobile */
        flex-direction: row; /* Ensure horizontal layout */
        align-items: center;
        justify-content: space-between;
        width: 100vw; /* Use viewport width to ensure full width */
        box-sizing: border-box;
        position: fixed !important; /* Ensure fixed positioning */
        top: 0 !important;
        left: 0 !important;
        right: 0 !important;
    }
    
    .header-content {
        display: flex !important;
        justify-content: space-between !important;
        align-items: center !important;
        width: 100% !important;
        height: 100% !important;
        padding: 0 var(--spacing-md) !important;
        box-sizing: border-box;
    }
    
    /* Mobile overlay */
    .mobile-overlay {
        display: block;
    }
    
    .mobile-overlay.active {
        opacity: 1;
        visibility: visible;
    }
    
    /* Content area optimization */
    .featured-section,
    .game-sections {
        padding-left: var(--spacing-md);
        padding-right: var(--spacing-md);
    }
    
    .categories-nav {
        margin: var(--spacing-md);
    }
    
    .categories-grid {
        grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
        gap: var(--spacing-sm);
    }
    
    .games-grid {
        grid-template-columns: repeat(auto-fill, minmax(140px, 1fr));
        gap: var(--spacing-sm);
    }
    
    .featured-carousel {
        margin: var(--spacing-md);
    }
    
    /* 移动端保持 2.25:1 比例 */
    .featured-swiper {
        padding-bottom: 44.44%; /* 保持 2.25:1 比例 */
    }
    
    /* Footer responsive */
    .footer-main {
        grid-template-columns: 1fr;
        gap: var(--spacing-lg);
        text-align: center;
    }
    
    .footer-links {
        grid-template-columns: 1fr;
        gap: var(--spacing-md);
    }
    
    /* Center line on mobile */
    .footer-column h4::after {
        left: 50%;
        transform: translateX(-50%);
    }
    
    .footer-bottom-content {
        flex-direction: column;
        text-align: center;
        gap: var(--spacing-xs);
    }
}

/* Small Mobile */
@media (max-width: 480px) {
    :root {
        --sidebar-width: 75%;
    }
    
    .categories-grid {
        grid-template-columns: 1fr 1fr;
    }
    
    .games-grid {
        grid-template-columns: repeat(auto-fill, minmax(120px, 1fr));
    }
}