/* ===================================
   Velocity Sports - Design System
   MyWhoosh-Inspired Black & Gold Theme
   =================================== */

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

:root {
    /* Color Palette */
    --color-black-bg: #0a0a0a;
    --color-black-secondary: #121212;
    --color-black-tertiary: #1a1a1a;
    --color-gray-dark: #2a2a2a;
    --color-gray-medium: #333333;
    
    --color-gold-primary: #f4c430;
    --color-gold-secondary: #d4af37;
    --color-gold-light: #ffd700;
    
    --color-purple-primary: #8b5cf6;
    --color-purple-secondary: #a855f7;
    
    --color-white: #ffffff;
    --color-gray-text: #9ca3af;
    --color-gray-text-dark: #6b7280;
    
    --color-live-red: #ef4444;
    --color-success-green: #10b981;
    --color-warning-yellow: #fbbf24;
    
    /* Spacing */
    --spacing-xs: 4px;
    --spacing-sm: 8px;
    --spacing-md: 16px;
    --spacing-lg: 24px;
    --spacing-xl: 32px;
    --spacing-2xl: 48px;
    
    /* Border Radius */
    --radius-sm: 6px;
    --radius-md: 8px;
    --radius-lg: 12px;
    --radius-xl: 16px;
    
    /* Shadows */
    --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.2);
    --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.3);
    --shadow-lg: 0 6px 16px rgba(0, 0, 0, 0.4);
    --shadow-glow-gold: 0 0 20px rgba(244, 196, 48, 0.3);
    --shadow-glow-red: 0 0 8px rgba(239, 68, 68, 0.5);
    
    /* Transitions */
    --transition-fast: 150ms ease;
    --transition-normal: 250ms ease;
    --transition-slow: 350ms ease;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    background-color: var(--color-black-bg);
    color: var(--color-white);
    line-height: 1.6;
    overflow-x: hidden;
}

.container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 var(--spacing-lg);
}

/* ===================================
   Header Styles
   =================================== */

.header {
    background-color: var(--color-black-secondary);
    border-bottom: 1px solid var(--color-gray-dark);
    position: sticky;
    top: 0;
    z-index: 100;
    backdrop-filter: blur(10px);
}

.header-content {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--spacing-md) 0;
    gap: var(--spacing-xl);
}

.logo {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    text-decoration: none;
}

.logo-icon {
    width: 40px;
    height: 40px;
}

.logo-text {
    font-size: 24px;
    font-weight: 700;
    background: linear-gradient(135deg, var(--color-gold-primary) 0%, var(--color-gold-secondary) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.nav {
    display: flex;
    gap: var(--spacing-xl);
    flex: 1;
    justify-content: center;
}

.nav-link {
    color: var(--color-gray-text);
    text-decoration: none;
    font-weight: 500;
    font-size: 16px;
    padding: var(--spacing-sm) var(--spacing-md);
    border-radius: var(--radius-md);
    transition: all var(--transition-normal);
    position: relative;
}

.nav-link:hover {
    color: var(--color-white);
    background-color: var(--color-gray-dark);
}

.nav-link.active {
    color: var(--color-white);
    font-weight: 600;
}

.nav-link.active::after {
    content: '';
    position: absolute;
    bottom: -2px;
    left: var(--spacing-md);
    right: var(--spacing-md);
    height: 3px;
    background: var(--color-purple-primary);
    border-radius: 2px;
}

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

.miles-counter {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    background: linear-gradient(135deg, var(--color-gold-secondary) 0%, var(--color-gold-primary) 100%);
    padding: var(--spacing-sm) var(--spacing-md);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-glow-gold);
}

.miles-icon {
    font-size: 24px;
}

.miles-info {
    display: flex;
    flex-direction: column;
    line-height: 1.2;
}

.miles-value {
    font-size: 20px;
    font-weight: 700;
    color: var(--color-black-bg);
}

.miles-label {
    font-size: 11px;
    font-weight: 600;
    color: var(--color-black-secondary);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.btn-primary {
    background: linear-gradient(135deg, var(--color-gold-primary) 0%, var(--color-gold-secondary) 100%);
    color: var(--color-black-bg);
    border: none;
    padding: var(--spacing-sm) var(--spacing-lg);
    border-radius: var(--radius-md);
    font-weight: 600;
    font-size: 14px;
    cursor: pointer;
    transition: all var(--transition-normal);
    box-shadow: var(--shadow-sm);
}

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

.profile-avatar {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    overflow: hidden;
    border: 2px solid var(--color-gold-primary);
    cursor: pointer;
    transition: all var(--transition-normal);
}

.profile-avatar:hover {
    border-color: var(--color-gold-light);
    transform: scale(1.05);
}

.profile-avatar img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

/* ===================================
   Platform Tabs
   =================================== */

.platform-tabs {
    display: flex;
    gap: var(--spacing-md);
    padding: var(--spacing-xl) 0 var(--spacing-lg);
    overflow-x: auto;
    scrollbar-width: none;
}

.platform-tabs::-webkit-scrollbar {
    display: none;
}

.platform-tab {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    background: var(--color-black-tertiary);
    border: 1px solid var(--color-gray-dark);
    color: var(--color-gray-text);
    padding: var(--spacing-sm) var(--spacing-md);
    border-radius: var(--radius-md);
    font-weight: 500;
    font-size: 14px;
    cursor: pointer;
    transition: all var(--transition-normal);
    white-space: nowrap;
}

.platform-tab:hover {
    background: var(--color-gray-dark);
    color: var(--color-white);
    border-color: var(--color-gray-medium);
}

.platform-tab.active {
    background: var(--color-purple-primary);
    color: var(--color-white);
    border-color: var(--color-purple-primary);
    font-weight: 600;
}

.tab-icon {
    font-size: 18px;
}

/* ===================================
   Stream Grid
   =================================== */

.stream-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(380px, 1fr));
    gap: var(--spacing-lg);
    padding-bottom: var(--spacing-2xl);
}

.stream-card {
    background: var(--color-black-tertiary);
    border-radius: var(--radius-lg);
    overflow: hidden;
    cursor: pointer;
    transition: all var(--transition-normal);
    box-shadow: var(--shadow-sm);
}

.stream-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
}

.stream-thumbnail {
    position: relative;
    width: 100%;
    padding-top: 56.25%; /* 16:9 aspect ratio */
    overflow: hidden;
    background: var(--color-gray-dark);
}

.stream-thumbnail img {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform var(--transition-slow);
}

.stream-card:hover .stream-thumbnail img {
    transform: scale(1.05);
}

.stream-thumbnail::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    height: 50%;
    background: linear-gradient(to bottom, transparent 0%, rgba(0, 0, 0, 0.8) 100%);
    pointer-events: none;
}

.live-badge {
    position: absolute;
    top: var(--spacing-sm);
    left: var(--spacing-sm);
    background: var(--color-live-red);
    color: var(--color-white);
    padding: var(--spacing-xs) var(--spacing-sm);
    border-radius: var(--radius-sm);
    font-size: 12px;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    box-shadow: var(--shadow-glow-red);
    z-index: 2;
}

.training-badge {
    position: absolute;
    top: var(--spacing-sm);
    right: var(--spacing-sm);
    background: var(--color-success-green);
    color: var(--color-white);
    padding: var(--spacing-xs) var(--spacing-sm);
    border-radius: var(--radius-sm);
    font-size: 10px;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    z-index: 2;
}

.viewer-count {
    position: absolute;
    bottom: var(--spacing-sm);
    left: var(--spacing-sm);
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    background: rgba(0, 0, 0, 0.8);
    backdrop-filter: blur(10px);
    padding: var(--spacing-xs) var(--spacing-sm);
    border-radius: var(--radius-sm);
    font-size: 14px;
    font-weight: 600;
    z-index: 2;
}

.viewer-icon {
    font-size: 16px;
}

.stream-duration {
    position: absolute;
    bottom: var(--spacing-sm);
    right: var(--spacing-sm);
    background: rgba(0, 0, 0, 0.8);
    backdrop-filter: blur(10px);
    padding: var(--spacing-xs) var(--spacing-sm);
    border-radius: var(--radius-sm);
    font-size: 12px;
    font-weight: 600;
    font-family: 'SF Mono', Monaco, monospace;
    z-index: 2;
}

.stream-info {
    display: flex;
    gap: var(--spacing-md);
    padding: var(--spacing-md);
}

.streamer-avatar {
    width: 48px;
    height: 48px;
    border-radius: 50%;
    overflow: hidden;
    flex-shrink: 0;
    border: 2px solid var(--color-gray-dark);
}

.streamer-avatar img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.stream-details {
    flex: 1;
    min-width: 0;
}

.stream-title {
    font-size: 15px;
    font-weight: 600;
    color: var(--color-white);
    margin-bottom: var(--spacing-xs);
    overflow: hidden;
    text-overflow: ellipsis;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    line-height: 1.4;
}

.streamer-name {
    font-size: 14px;
    color: var(--color-gray-text);
    margin-bottom: var(--spacing-xs);
}

.stream-meta {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-sm);
    align-items: center;
}

.platform-badge {
    padding: 2px var(--spacing-sm);
    border-radius: var(--radius-sm);
    font-size: 11px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.platform-badge.zwift {
    background: #fc6719;
    color: var(--color-white);
}

.platform-badge.rouvy {
    background: #e31e24;
    color: var(--color-white);
}

.platform-badge.strava {
    background: #fc4c02;
    color: var(--color-white);
}

.platform-badge.whoosh {
    background: var(--color-gold-primary);
    color: var(--color-black-bg);
}

.platform-badge.fullgas {
    background: #ff0000;
    color: var(--color-white);
}

.meta-item {
    font-size: 12px;
    color: var(--color-gray-text-dark);
}

/* ===================================
   Chat Sidebar
   =================================== */

.chat-sidebar {
    position: fixed;
    right: 0;
    top: 73px;
    bottom: 0;
    width: 340px;
    background: var(--color-black-secondary);
    border-left: 1px solid var(--color-gray-dark);
    display: flex;
    flex-direction: column;
    z-index: 90;
    transition: transform var(--transition-normal);
}

.chat-sidebar.collapsed {
    transform: translateX(340px);
}

.chat-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--spacing-md);
    border-bottom: 1px solid var(--color-gray-dark);
}

.chat-header h3 {
    font-size: 16px;
    font-weight: 600;
}

.chat-toggle {
    background: transparent;
    border: none;
    color: var(--color-gray-text);
    font-size: 24px;
    cursor: pointer;
    padding: 0;
    width: 32px;
    height: 32px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: var(--radius-sm);
    transition: all var(--transition-fast);
}

.chat-toggle:hover {
    background: var(--color-gray-dark);
    color: var(--color-white);
}

.chat-messages {
    flex: 1;
    overflow-y: auto;
    padding: var(--spacing-md);
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
}

.chat-messages::-webkit-scrollbar {
    width: 8px;
}

.chat-messages::-webkit-scrollbar-track {
    background: var(--color-black-secondary);
}

.chat-messages::-webkit-scrollbar-thumb {
    background: var(--color-gray-dark);
    border-radius: 4px;
}

.chat-messages::-webkit-scrollbar-thumb:hover {
    background: var(--color-gray-medium);
}

.chat-message {
    display: flex;
    gap: var(--spacing-sm);
    animation: slideIn 0.3s ease;
}

@keyframes slideIn {
    from {
        opacity: 0;
        transform: translateY(10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.message-avatar {
    width: 32px;
    height: 32px;
    border-radius: 50%;
    overflow: hidden;
    flex-shrink: 0;
}

.message-avatar img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.message-content {
    flex: 1;
    min-width: 0;
}

.message-header {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    margin-bottom: 2px;
}

.message-username {
    font-size: 13px;
    font-weight: 600;
    color: var(--color-white);
}

.badge-streamer {
    background: linear-gradient(135deg, var(--color-gold-primary) 0%, var(--color-gold-secondary) 100%);
    color: var(--color-black-bg);
    padding: 2px 6px;
    border-radius: var(--radius-sm);
    font-size: 10px;
    font-weight: 700;
    letter-spacing: 0.5px;
}

.badge-subscriber {
    background: var(--color-purple-primary);
    color: var(--color-white);
    padding: 2px 6px;
    border-radius: var(--radius-sm);
    font-size: 10px;
    font-weight: 700;
    letter-spacing: 0.5px;
}

.message-text {
    font-size: 14px;
    color: var(--color-gray-text);
    line-height: 1.5;
    word-wrap: break-word;
}

.chat-input {
    display: flex;
    gap: var(--spacing-sm);
    padding: var(--spacing-md);
    border-top: 1px solid var(--color-gray-dark);
}

.chat-input input {
    flex: 1;
    background: var(--color-black-tertiary);
    border: 1px solid var(--color-gray-dark);
    color: var(--color-white);
    padding: var(--spacing-sm) var(--spacing-md);
    border-radius: var(--radius-md);
    font-size: 14px;
    outline: none;
    transition: all var(--transition-fast);
}

.chat-input input:focus {
    border-color: var(--color-purple-primary);
    background: var(--color-black-secondary);
}

.chat-input input::placeholder {
    color: var(--color-gray-text-dark);
}

.btn-send {
    background: var(--color-purple-primary);
    border: none;
    color: var(--color-white);
    width: 40px;
    height: 40px;
    border-radius: var(--radius-md);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all var(--transition-normal);
}

.btn-send:hover {
    background: var(--color-purple-secondary);
    transform: scale(1.05);
}

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

@media (max-width: 1400px) {
    .chat-sidebar {
        width: 300px;
    }
    
    .chat-sidebar.collapsed {
        transform: translateX(300px);
    }
}

@media (max-width: 1024px) {
    .stream-grid {
        grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
        gap: var(--spacing-md);
    }
    
    .chat-sidebar {
        display: none;
    }
    
    .nav {
        gap: var(--spacing-md);
    }
}

@media (max-width: 768px) {
    .header-content {
        flex-wrap: wrap;
        gap: var(--spacing-md);
    }
    
    .nav {
        order: 3;
        width: 100%;
        justify-content: flex-start;
        overflow-x: auto;
        scrollbar-width: none;
    }
    
    .nav::-webkit-scrollbar {
        display: none;
    }
    
    .stream-grid {
        grid-template-columns: 1fr;
    }
    
    .miles-counter {
        display: none;
    }
    
    .logo-text {
        font-size: 20px;
    }
}

@media (max-width: 480px) {
    .container {
        padding: 0 var(--spacing-md);
    }
    
    .platform-tabs {
        gap: var(--spacing-sm);
    }
    
    .platform-tab {
        padding: var(--spacing-xs) var(--spacing-sm);
        font-size: 13px;
    }
    
    .btn-primary {
        padding: var(--spacing-sm) var(--spacing-md);
        font-size: 13px;
    }
}

/* ===================================
   Utility Classes
   =================================== */

.hidden {
    display: none !important;
}

.fade-in {
    animation: fadeIn 0.5s ease;
}

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