/* ============================================
   SyncStream - Watch Party Platform
   Design System: Volcanic Glass + Acid Neon
   ============================================ */

:root {
    /* Volcanic Glass Palette */
    --bg-primary: #0D0D0D;
    --bg-secondary: #1A1A1A;
    --bg-tertiary: #2A2A2A;
    --bg-card: #1E1E1E;
    
    /* Acid Neon Accents */
    --accent-primary: #CCFF00;
    --accent-secondary: #FF3CAC;
    --accent-tertiary: #FF6B2B;
    --accent-cyan: #00D4FF;
    
    /* Text Colors */
    --text-primary: #FFFFFF;
    --text-secondary: #B0B0B0;
    --text-muted: #707070;
    
    /* Gradients */
    --gradient-hero: linear-gradient(135deg, #CCFF00 0%, #FF3CAC 50%, #FF6B2B 100%);
    --gradient-card: linear-gradient(180deg, rgba(204, 255, 0, 0.1) 0%, transparent 100%);
    --gradient-glow: radial-gradient(ellipse at 50% 0%, rgba(204, 255, 0, 0.15) 0%, transparent 50%);
    
    /* Typography */
    --font-display: 'Clash Display', sans-serif;
    --font-body: 'Plus Jakarta Sans', sans-serif;
    
    /* Spacing */
    --space-xs: 0.5rem;
    --space-sm: 1rem;
    --space-md: 1.5rem;
    --space-lg: 2rem;
    --space-xl: 3rem;
    --space-2xl: 4rem;
    
    /* Border Radius */
    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 16px;
    --radius-xl: 24px;
    
    /* Transitions */
    --transition-fast: 0.15s ease;
    --transition-normal: 0.3s ease;
    --transition-slow: 0.5s ease;
}

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

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

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

body {
    font-family: var(--font-body);
    background: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.6;
    min-height: 100vh;
    overflow-x: hidden;
}

/* ============================================
   Page Management
   ============================================ */

.page {
    display: none;
    min-height: 100vh;
}

.page.active {
    display: block;
}

/* ============================================
   Ambient Effects
   ============================================ */

.ambient-glow {
    position: fixed;
    top: -50%;
    left: -20%;
    width: 60%;
    height: 100%;
    background: radial-gradient(ellipse, rgba(204, 255, 0, 0.08) 0%, transparent 70%);
    pointer-events: none;
    z-index: 0;
    animation: pulse-glow 8s ease-in-out infinite;
}

.ambient-glow-2 {
    position: fixed;
    bottom: -30%;
    right: -20%;
    width: 50%;
    height: 80%;
    background: radial-gradient(ellipse, rgba(255, 60, 172, 0.06) 0%, transparent 70%);
    pointer-events: none;
    z-index: 0;
    animation: pulse-glow 10s ease-in-out infinite reverse;
}

@keyframes pulse-glow {
    0%, 100% { opacity: 0.5; transform: scale(1); }
    50% { opacity: 0.8; transform: scale(1.1); }
}

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

.navbar {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--space-md) var(--space-xl);
    z-index: 100;
    background: linear-gradient(180deg, rgba(13, 13, 13, 0.9) 0%, transparent 100%);
    backdrop-filter: blur(10px);
}

.logo {
    display: flex;
    align-items: center;
    gap: var(--space-xs);
    font-family: var(--font-display);
    font-weight: 600;
    font-size: 1.5rem;
}

.logo-icon {
    color: var(--accent-primary);
    font-size: 1.75rem;
    animation: pulse 2s ease-in-out infinite;
}

@keyframes pulse {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.7; }
}

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

.nav-links {
    display: flex;
    gap: var(--space-lg);
}

.nav-link {
    color: var(--text-secondary);
    text-decoration: none;
    font-weight: 500;
    font-size: 0.95rem;
    transition: color var(--transition-fast);
    position: relative;
}

.nav-link:hover {
    color: var(--text-primary);
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: -4px;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--accent-primary);
    transition: width var(--transition-normal);
}

.nav-link:hover::after {
    width: 100%;
}

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

.hero {
    min-height: 100vh;
    display: grid;
    grid-template-columns: 1fr 1fr;
    align-items: center;
    padding: var(--space-2xl);
    padding-top: 100px;
    gap: var(--space-2xl);
    position: relative;
    z-index: 1;
}

.hero-content {
    max-width: 600px;
}

.badge {
    display: inline-flex;
    align-items: center;
    gap: var(--space-xs);
    background: rgba(204, 255, 0, 0.1);
    border: 1px solid rgba(204, 255, 0, 0.3);
    padding: var(--space-xs) var(--space-sm);
    border-radius: 100px;
    font-size: 0.85rem;
    font-weight: 500;
    color: var(--accent-primary);
    margin-bottom: var(--space-lg);
}

.badge-dot {
    width: 8px;
    height: 8px;
    background: var(--accent-primary);
    border-radius: 50%;
    animation: blink 1.5s ease-in-out infinite;
}

@keyframes blink {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.3; }
}

.hero-title {
    font-family: var(--font-display);
    font-size: clamp(3rem, 6vw, 5rem);
    font-weight: 700;
    line-height: 1.1;
    margin-bottom: var(--space-md);
    letter-spacing: -0.02em;
}

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

.hero-subtitle {
    font-size: 1.15rem;
    color: var(--text-secondary);
    margin-bottom: var(--space-xl);
    line-height: 1.7;
    max-width: 500px;
}

.hero-actions {
    display: flex;
    gap: var(--space-md);
    margin-bottom: var(--space-2xl);
}

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

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-xs);
    padding: var(--space-sm) var(--space-lg);
    border-radius: var(--radius-md);
    font-family: var(--font-body);
    font-weight: 600;
    font-size: 1rem;
    cursor: pointer;
    transition: all var(--transition-normal);
    border: none;
    outline: none;
}

.btn-primary {
    background: var(--accent-primary);
    color: var(--bg-primary);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 24px rgba(204, 255, 0, 0.3);
}

.btn-secondary {
    background: transparent;
    color: var(--text-primary);
    border: 2px solid var(--bg-tertiary);
}

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

.btn-small {
    padding: var(--space-xs) var(--space-sm);
    font-size: 0.9rem;
}

.btn-danger {
    background: rgba(255, 107, 43, 0.1);
    color: var(--accent-tertiary);
    border: 1px solid rgba(255, 107, 43, 0.3);
}

.btn-danger:hover {
    background: rgba(255, 107, 43, 0.2);
}

.btn-full {
    width: 100%;
}

.btn-invite {
    background: rgba(204, 255, 0, 0.1);
    color: var(--accent-primary);
    border: 1px solid rgba(204, 255, 0, 0.3);
}

.btn-icon {
    font-size: 1.2rem;
    line-height: 1;
}

/* ============================================
   Features Preview
   ============================================ */

.features-preview {
    display: flex;
    flex-wrap: wrap;
    gap: var(--space-md);
}

.feature-item {
    display: flex;
    align-items: center;
    gap: var(--space-xs);
    color: var(--text-secondary);
    font-size: 0.9rem;
}

.feature-icon {
    font-size: 1.1rem;
}

/* ============================================
   Hero Visual / Preview Card
   ============================================ */

.hero-visual {
    display: flex;
    justify-content: center;
    align-items: center;
}

.video-preview-card {
    background: var(--bg-card);
    border-radius: var(--radius-xl);
    padding: var(--space-md);
    width: 100%;
    max-width: 400px;
    border: 1px solid var(--bg-tertiary);
    box-shadow: 0 24px 64px rgba(0, 0, 0, 0.4);
    animation: float 6s ease-in-out infinite;
}

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

.video-preview-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--space-md);
}

.video-dots {
    display: flex;
    gap: 6px;
}

.video-dots span {
    width: 10px;
    height: 10px;
    border-radius: 50%;
    background: var(--bg-tertiary);
}

.video-dots span:first-child { background: #FF5F57; }
.video-dots span:nth-child(2) { background: #FFBD2E; }
.video-dots span:last-child { background: #28CA42; }

.video-status {
    font-size: 0.75rem;
    font-weight: 600;
    color: var(--accent-primary);
    background: rgba(204, 255, 0, 0.1);
    padding: 4px 10px;
    border-radius: 100px;
}

.video-preview-content {
    background: linear-gradient(135deg, #2A2A2A 0%, #1A1A1A 100%);
    border-radius: var(--radius-md);
    aspect-ratio: 16/9;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    gap: var(--space-sm);
    margin-bottom: var(--space-md);
    position: relative;
    overflow: hidden;
}

.video-preview-content::before {
    content: '';
    position: absolute;
    inset: 0;
    background: var(--gradient-glow);
    opacity: 0.5;
}

.play-button {
    width: 60px;
    height: 60px;
    background: var(--accent-primary);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    color: var(--bg-primary);
    cursor: pointer;
    transition: transform var(--transition-normal);
    z-index: 1;
}

.play-button:hover {
    transform: scale(1.1);
}

.video-info {
    text-align: center;
    z-index: 1;
}

.video-info h3 {
    font-family: var(--font-display);
    font-size: 1.1rem;
    margin-bottom: 4px;
}

.video-info p {
    font-size: 0.85rem;
    color: var(--text-secondary);
}

.video-preview-users {
    display: flex;
    align-items: center;
}

.user-avatar {
    width: 36px;
    height: 36px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 600;
    font-size: 0.85rem;
    color: var(--bg-primary);
    margin-left: -8px;
    border: 2px solid var(--bg-card);
}

.user-avatar:first-child {
    margin-left: 0;
}

/* ============================================
   Modals
   ============================================ */

.modal {
    display: none;
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.8);
    backdrop-filter: blur(8px);
    z-index: 1000;
    justify-content: center;
    align-items: center;
    padding: var(--space-md);
}

.modal.active {
    display: flex;
}

.modal-content {
    background: var(--bg-secondary);
    border-radius: var(--radius-xl);
    padding: var(--space-xl);
    width: 100%;
    max-width: 500px;
    max-height: 90vh;
    overflow-y: auto;
    border: 1px solid var(--bg-tertiary);
    position: relative;
    animation: modal-in 0.3s ease;
}

@keyframes modal-in {
    from {
        opacity: 0;
        transform: translateY(20px) scale(0.95);
    }
    to {
        opacity: 1;
        transform: translateY(0) scale(1);
    }
}

.modal-small {
    max-width: 400px;
}

.modal-close {
    position: absolute;
    top: var(--space-md);
    right: var(--space-md);
    background: none;
    border: none;
    color: var(--text-secondary);
    font-size: 1.5rem;
    cursor: pointer;
    transition: color var(--transition-fast);
    width: 36px;
    height: 36px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: var(--radius-sm);
}

.modal-close:hover {
    color: var(--text-primary);
    background: var(--bg-tertiary);
}

.modal-content h2 {
    font-family: var(--font-display);
    font-size: 1.75rem;
    margin-bottom: var(--space-xs);
}

.modal-content > p {
    color: var(--text-secondary);
    margin-bottom: var(--space-lg);
}

/* ============================================
   Forms
   ============================================ */

.form-group {
    margin-bottom: var(--space-lg);
}

.form-group label {
    display: block;
    font-weight: 600;
    margin-bottom: var(--space-xs);
    color: var(--text-primary);
    font-size: 0.95rem;
}

.form-group input[type="text"],
.form-group input[type="url"] {
    width: 100%;
    padding: var(--space-sm);
    background: var(--bg-tertiary);
    border: 1px solid transparent;
    border-radius: var(--radius-md);
    color: var(--text-primary);
    font-family: var(--font-body);
    font-size: 1rem;
    transition: all var(--transition-fast);
}

.form-group input:focus {
    outline: none;
    border-color: var(--accent-primary);
    background: var(--bg-card);
}

.form-group input::placeholder {
    color: var(--text-muted);
}

/* Source Tabs */
.source-tabs {
    display: flex;
    gap: var(--space-xs);
    margin-bottom: var(--space-sm);
}

.source-tab {
    flex: 1;
    padding: var(--space-xs) var(--space-sm);
    background: var(--bg-tertiary);
    border: none;
    border-radius: var(--radius-sm);
    color: var(--text-secondary);
    font-family: var(--font-body);
    font-weight: 500;
    cursor: pointer;
    transition: all var(--transition-fast);
}

.source-tab.active {
    background: var(--accent-primary);
    color: var(--bg-primary);
}

.source-content {
    display: none;
}

.source-content.active {
    display: block;
}

/* Upload Zone */
.upload-zone {
    border: 2px dashed var(--bg-tertiary);
    border-radius: var(--radius-md);
    padding: var(--space-xl);
    text-align: center;
    cursor: pointer;
    transition: all var(--transition-fast);
}

.upload-zone:hover {
    border-color: var(--accent-primary);
    background: rgba(204, 255, 0, 0.05);
}

.upload-icon {
    font-size: 2.5rem;
    margin-bottom: var(--space-sm);
}

.upload-zone p {
    font-weight: 600;
    margin-bottom: 4px;
}

.upload-zone span {
    color: var(--text-secondary);
    font-size: 0.9rem;
}

.upload-zone small {
    display: block;
    margin-top: var(--space-sm);
    color: var(--text-muted);
    font-size: 0.8rem;
}

.upload-progress {
    margin-top: var(--space-md);
}

.upload-progress.hidden {
    display: none;
}

.progress-bar {
    height: 6px;
    background: var(--bg-tertiary);
    border-radius: 3px;
    overflow: hidden;
    margin-bottom: var(--space-xs);
}

.progress-fill {
    height: 100%;
    width: 0%;
    background: var(--accent-primary);
    border-radius: 3px;
    transition: width 0.3s ease;
}

.progress-text {
    font-size: 0.85rem;
    color: var(--text-secondary);
}

/* Code Inputs */
.code-inputs {
    display: flex;
    gap: var(--space-xs);
    justify-content: center;
}

.code-input {
    width: 50px;
    height: 60px;
    text-align: center;
    font-size: 1.5rem;
    font-weight: 700;
    background: var(--bg-tertiary);
    border: 2px solid transparent;
    border-radius: var(--radius-md);
    color: var(--text-primary);
    text-transform: uppercase;
    transition: all var(--transition-fast);
}

.code-input:focus {
    outline: none;
    border-color: var(--accent-primary);
    background: var(--bg-card);
}

/* ============================================
   Watch Room
   ============================================ */

.room-header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--space-md) var(--space-xl);
    background: rgba(13, 13, 13, 0.95);
    backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--bg-tertiary);
    z-index: 100;
}

.room-info {
    display: flex;
    align-items: center;
    gap: var(--space-md);
}

.logo-small {
    display: flex;
    align-items: center;
    gap: var(--space-xs);
    font-family: var(--font-display);
    font-weight: 600;
}

.logo-small span:first-child {
    color: var(--accent-primary);
}

.room-divider {
    color: var(--bg-tertiary);
    font-weight: 300;
}

.room-name {
    font-family: var(--font-display);
    font-size: 1.25rem;
    font-weight: 600;
}

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

.room-code-display {
    display: flex;
    align-items: center;
    gap: var(--space-xs);
    background: var(--bg-tertiary);
    padding: var(--space-xs) var(--space-sm);
    border-radius: var(--radius-md);
}

.code-label {
    color: var(--text-secondary);
    font-size: 0.85rem;
}

.code-value {
    font-family: monospace;
    font-weight: 600;
    color: var(--accent-primary);
    letter-spacing: 1px;
}

.copy-btn {
    background: none;
    border: none;
    color: var(--text-secondary);
    cursor: pointer;
    padding: 4px;
    border-radius: var(--radius-sm);
    transition: all var(--transition-fast);
}

.copy-btn:hover {
    color: var(--accent-primary);
    background: rgba(204, 255, 0, 0.1);
}

/* Room Layout */
.room-layout {
    display: grid;
    grid-template-columns: 1fr 350px;
    gap: var(--space-md);
    padding: var(--space-md);
    padding-top: 90px;
    height: 100vh;
}

/* Video Area */
.video-area {
    display: flex;
    flex-direction: column;
    gap: var(--space-md);
}

.video-container {
    flex: 1;
    background: var(--bg-secondary);
    border-radius: var(--radius-lg);
    overflow: hidden;
    position: relative;
    display: flex;
    align-items: center;
    justify-content: center;
}

#main-video {
    width: 100%;
    height: 100%;
    object-fit: contain;
}

.video-placeholder {
    position: absolute;
    inset: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, #1A1A1A 0%, #0D0D0D 100%);
}

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

.placeholder-icon {
    font-size: 4rem;
    margin-bottom: var(--space-md);
    opacity: 0.5;
}

.placeholder-content p {
    font-size: 1.25rem;
    font-weight: 600;
    margin-bottom: var(--space-xs);
}

.placeholder-hint {
    color: var(--text-muted);
    font-size: 0.9rem;
}

/* Video Controls Bar */
.video-controls-bar {
    display: flex;
    align-items: center;
    gap: var(--space-md);
    background: var(--bg-secondary);
    padding: var(--space-sm) var(--space-md);
    border-radius: var(--radius-md);
}

.control-btn {
    width: 40px;
    height: 40px;
    background: var(--bg-tertiary);
    border: none;
    border-radius: var(--radius-sm);
    color: var(--text-primary);
    font-size: 1rem;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all var(--transition-fast);
}

.control-btn:hover {
    background: var(--accent-primary);
    color: var(--bg-primary);
}

.time-display {
    display: flex;
    gap: 4px;
    font-family: monospace;
    font-size: 0.9rem;
    color: var(--text-secondary);
    min-width: 100px;
}

.progress-container {
    flex: 1;
}

.progress-bar-video {
    height: 6px;
    background: var(--bg-tertiary);
    border-radius: 3px;
    overflow: hidden;
    cursor: pointer;
}

.progress-fill-video {
    height: 100%;
    width: 0%;
    background: var(--accent-primary);
    border-radius: 3px;
    transition: width 0.1s linear;
}

/* Users Bar */
.users-bar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    background: var(--bg-secondary);
    padding: var(--space-sm) var(--space-md);
    border-radius: var(--radius-md);
}

.users-list {
    display: flex;
    gap: var(--space-xs);
}

.user-pill {
    display: flex;
    align-items: center;
    gap: var(--space-xs);
    background: var(--bg-tertiary);
    padding: 6px 12px;
    border-radius: 100px;
    font-size: 0.85rem;
}

.user-pill-avatar {
    width: 24px;
    height: 24px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.7rem;
    font-weight: 600;
    color: var(--bg-primary);
}

.user-pill-name {
    font-weight: 500;
}

.user-pill.mic-muted .mic-icon {
    opacity: 0.5;
}

/* Sidebar */
.sidebar {
    display: flex;
    flex-direction: column;
    gap: var(--space-md);
    height: 100%;
}

/* Voice Panel */
.voice-panel {
    background: var(--bg-secondary);
    border-radius: var(--radius-lg);
    padding: var(--space-md);
}

.panel-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--space-md);
}

.panel-title {
    font-weight: 600;
    font-size: 0.95rem;
}

.voice-status {
    display: flex;
    align-items: center;
    gap: 6px;
    font-size: 0.8rem;
    color: var(--accent-primary);
}

.status-dot {
    width: 8px;
    height: 8px;
    background: var(--accent-primary);
    border-radius: 50%;
    animation: pulse 2s ease-in-out infinite;
}

.voice-controls {
    display: flex;
    gap: var(--space-sm);
}

.voice-btn {
    flex: 1;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 6px;
    padding: var(--space-sm);
    background: var(--bg-tertiary);
    border: 2px solid transparent;
    border-radius: var(--radius-md);
    color: var(--text-secondary);
    cursor: pointer;
    transition: all var(--transition-fast);
}

.voice-btn:hover {
    border-color: var(--accent-primary);
    color: var(--text-primary);
}

.voice-btn.active {
    background: rgba(204, 255, 0, 0.1);
    border-color: var(--accent-primary);
    color: var(--accent-primary);
}

.voice-icon {
    font-size: 1.25rem;
}

.speaking-indicator {
    display: none;
    align-items: center;
    gap: var(--space-xs);
    margin-top: var(--space-sm);
    padding: var(--space-xs) var(--space-sm);
    background: rgba(0, 212, 255, 0.1);
    border-radius: var(--radius-sm);
    font-size: 0.85rem;
    color: var(--accent-cyan);
}

.speaking-indicator.active {
    display: flex;
}

.wave-bar {
    width: 3px;
    height: 12px;
    background: var(--accent-cyan);
    border-radius: 2px;
    animation: wave 0.5s ease-in-out infinite;
}

.wave-bar:nth-child(2) { animation-delay: 0.1s; }
.wave-bar:nth-child(3) { animation-delay: 0.2s; }

@keyframes wave {
    0%, 100% { transform: scaleY(0.5); }
    50% { transform: scaleY(1); }
}

/* Chat Panel */
.chat-panel {
    flex: 1;
    background: var(--bg-secondary);
    border-radius: var(--radius-lg);
    display: flex;
    flex-direction: column;
    overflow: hidden;
}

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

.chat-welcome {
    text-align: center;
    color: var(--text-muted);
    font-size: 0.9rem;
    padding: var(--space-lg);
}

.message {
    display: flex;
    gap: var(--space-xs);
    align-items: flex-start;
}

.message-avatar {
    width: 32px;
    height: 32px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.75rem;
    font-weight: 600;
    color: var(--bg-primary);
    flex-shrink: 0;
}

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

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

.message-author {
    font-weight: 600;
    font-size: 0.85rem;
}

.message-time {
    font-size: 0.75rem;
    color: var(--text-muted);
}

.message-text {
    font-size: 0.9rem;
    color: var(--text-secondary);
    word-wrap: break-word;
}

.message.system {
    justify-content: center;
}

.message.system .message-text {
    color: var(--text-muted);
    font-size: 0.85rem;
    font-style: italic;
}

/* Chat Input */
.chat-input-area {
    padding: var(--space-md);
    border-top: 1px solid var(--bg-tertiary);
}

.chat-input-wrapper {
    display: flex;
    gap: var(--space-xs);
    background: var(--bg-tertiary);
    border-radius: var(--radius-md);
    padding: 4px;
}

#chat-input {
    flex: 1;
    background: none;
    border: none;
    padding: var(--space-xs) var(--space-sm);
    color: var(--text-primary);
    font-family: var(--font-body);
    font-size: 0.95rem;
    outline: none;
}

#chat-input::placeholder {
    color: var(--text-muted);
}

.send-btn {
    width: 36px;
    height: 36px;
    background: var(--accent-primary);
    border: none;
    border-radius: var(--radius-sm);
    color: var(--bg-primary);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all var(--transition-fast);
}

.send-btn:hover {
    transform: scale(1.05);
}

/* ============================================
   Invite Modal
   ============================================ */

.invite-code-box {
    background: var(--bg-tertiary);
    border-radius: var(--radius-md);
    padding: var(--space-lg);
    text-align: center;
    margin-bottom: var(--space-lg);
}

.invite-code-box span {
    display: block;
    font-family: monospace;
    font-size: 2rem;
    font-weight: 700;
    color: var(--accent-primary);
    letter-spacing: 4px;
    margin-bottom: var(--space-md);
}

.copy-btn-large {
    display: inline-flex;
    align-items: center;
    gap: var(--space-xs);
    padding: var(--space-xs) var(--space-md);
    background: var(--bg-card);
    border: 1px solid var(--accent-primary);
    border-radius: var(--radius-sm);
    color: var(--accent-primary);
    font-family: var(--font-body);
    font-weight: 600;
    cursor: pointer;
    transition: all var(--transition-fast);
}

.copy-btn-large:hover {
    background: var(--accent-primary);
    color: var(--bg-primary);
}

.share-options {
    display: flex;
    gap: var(--space-sm);
}

.share-btn {
    flex: 1;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--space-xs);
    padding: var(--space-sm);
    background: var(--bg-tertiary);
    border: none;
    border-radius: var(--radius-md);
    color: var(--text-secondary);
    font-family: var(--font-body);
    font-size: 0.85rem;
    cursor: pointer;
    transition: all var(--transition-fast);
}

.share-btn:hover {
    background: var(--bg-card);
    color: var(--text-primary);
}

.share-btn span:first-child {
    font-size: 1.5rem;
}

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

@media (max-width: 1024px) {
    .room-layout {
        grid-template-columns: 1fr;
        grid-template-rows: 1fr auto;
    }
    
    .sidebar {
        flex-direction: row;
        height: auto;
    }
    
    .chat-panel {
        min-height: 300px;
    }
}

@media (max-width: 768px) {
    .hero {
        grid-template-columns: 1fr;
        text-align: center;
        padding-top: 120px;
    }
    
    .hero-content {
        max-width: 100%;
    }
    
    .hero-actions {
        justify-content: center;
    }
    
    .features-preview {
        justify-content: center;
    }
    
    .hero-visual {
        display: none;
    }
    
    .navbar {
        padding: var(--space-sm) var(--space-md);
    }
    
    .nav-links {
        display: none;
    }
    
    .room-layout {
        padding: var(--space-sm);
        padding-top: 80px;
    }
    
    .room-header {
        padding: var(--space-sm) var(--space-md);
    }
    
    .room-name {
        font-size: 1rem;
    }
    
    .room-code-display {
        display: none;
    }
    
    .sidebar {
        flex-direction: column;
    }
    
    .voice-panel {
        order: 2;
    }
    
    .chat-panel {
        order: 1;
        min-height: 250px;
    }
}

@media (max-width: 480px) {
    .hero-title {
        font-size: 2.5rem;
    }
    
    .btn {
        padding: var(--space-sm);
        font-size: 0.9rem;
    }
    
    .code-input {
        width: 40px;
        height: 50px;
        font-size: 1.25rem;
    }
    
    .modal-content {
        padding: var(--space-lg);
    }
}

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

.hidden {
    display: none !important;
}

.sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border: 0;
}