:root {
    --primary: #4285f4;
    --primary-dark: #3367d6;
    --secondary: #34a853;
    --danger: #ea4335;
    --warning: #fbbc05;
    --dark-bg: #1a1d21;
    --dark-panel: #2d3136;
    --dark-border: #3c4043;
    --text-primary: #e8eaed;
    --text-secondary: #9aa0a6;
    --hover-bg: #3c4043;
    --shadow: 0 4px 12px rgba(0, 0, 0, 0.3);
    --radius: 12px;
    --transition: all 0.3s ease;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: 'Inter', 'Roboto', sans-serif;
}

body {
    background-color: var(--dark-bg);
    color: var(--text-primary);
    height: 100vh;
    overflow: hidden;
}

.hidden {
    display: none !important;
}

/* ===== LOADER ===== */
.loader-overlay {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: var(--dark-bg);
    display: flex;
    justify-content: center;
    align-items: center;
    z-index: 9999;
}

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

.spinner {
    width: 50px;
    height: 50px;
    border: 4px solid var(--dark-border);
    border-top-color: var(--primary);
    border-radius: 50%;
    animation: spin 1s linear infinite;
    margin: 0 auto 20px;
}

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

/* ===== LOBBY ===== */
#lobby-screen {
    height: 100vh;
    display: flex;
    justify-content: center;
    align-items: center;
    background: linear-gradient(135deg, var(--dark-bg) 0%, #0f1215 100%);
}

.lobby-container {
    width: 100%;
    max-width: 1200px;
    background: var(--dark-panel);
    border-radius: var(--radius);
    overflow: hidden;
    box-shadow: var(--shadow);
}

.lobby-header {
    padding: 20px 30px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    border-bottom: 1px solid var(--dark-border);
}

.logo {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 24px;
    font-weight: 600;
    color: var(--primary);
}

.logo i {
    font-size: 28px;
}

.lobby-content {
    display: flex;
    min-height: 600px;
}

.preview-section {
    flex: 1;
    padding: 40px;
    border-right: 1px solid var(--dark-border);
}

.preview-section h1 {
    font-size: 32px;
    margin-bottom: 30px;
    font-weight: 500;
}

.video-preview-container {
    position: relative;
    width: 100%;
    height: 300px;
    border-radius: var(--radius);
    overflow: hidden;
    background: #000;
    margin-bottom: 30px;
}

#lobby-video {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.preview-overlay {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    padding: 20px;
    background: linear-gradient(transparent, rgba(0,0,0,0.7));
}

.preview-controls {
    display: flex;
    justify-content: center;
    gap: 15px;
}

.preview-btn {
    width: 50px;
    height: 50px;
    border-radius: 50%;
    border: none;
    background: rgba(255,255,255,0.2);
    backdrop-filter: blur(10px);
    color: white;
    cursor: pointer;
    transition: var(--transition);
}

.preview-btn:hover {
    background: rgba(255,255,255,0.3);
    transform: scale(1.05);
}

.input-group {
    position: relative;
    margin-bottom: 20px;
}

.input-group i {
    position: absolute;
    left: 15px;
    top: 50%;
    transform: translateY(-50%);
    color: var(--text-secondary);
}

#username-input {
    width: 100%;
    padding: 15px 15px 15px 45px;
    background: var(--dark-bg);
    border: 1px solid var(--dark-border);
    border-radius: 8px;
    color: var(--text-primary);
    font-size: 16px;
}

.room-info {
    display: flex;
    align-items: center;
    gap: 10px;
    padding: 12px 15px;
    background: var(--dark-bg);
    border-radius: 8px;
    margin-top: 10px;
}

.room-info i {
    color: var(--primary);
}

.join-section {
    flex: 1;
    padding: 40px;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
}

.feature-list {
    display: grid;
    gap: 20px;
}

.feature {
    display: flex;
    align-items: center;
    gap: 15px;
    padding: 15px;
    background: var(--dark-bg);
    border-radius: 8px;
    transition: var(--transition);
}

.feature:hover {
    background: var(--hover-bg);
}

.feature i {
    color: var(--primary);
    font-size: 24px;
}

.join-btn {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    width: 100%;
    padding: 18px;
    background: var(--primary);
    color: white;
    border: none;
    border-radius: 8px;
    font-size: 18px;
    font-weight: 500;
    cursor: pointer;
    transition: var(--transition);
}

.join-btn:hover {
    background: var(--primary-dark);
    transform: translateY(-2px);
}

.disclaimer {
    text-align: center;
    color: var(--text-secondary);
    font-size: 12px;
    margin-top: 20px;
}

.disclaimer a {
    color: var(--primary);
    text-decoration: none;
}

/* ===== MEET SCREEN ===== */
#meet-screen {
    height: 100vh;
    display: flex;
    flex-direction: column;
}

/* Top Bar */
.top-bar {
    padding: 15px 30px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    background: var(--dark-panel);
    border-bottom: 1px solid var(--dark-border);
    z-index: 100;
}

.meet-info {
    display: flex;
    align-items: center;
    gap: 20px;
}

.logo-small {
    display: flex;
    align-items: center;
    gap: 8px;
    font-weight: 600;
    color: var(--primary);
}

.meet-details {
    display: flex;
    align-items: center;
    gap: 10px;
    color: var(--text-secondary);
}

.separator {
    color: var(--dark-border);
}

.time-display {
    display: flex;
    align-items: center;
    gap: 8px;
    font-weight: 500;
}

.top-actions {
    display: flex;
    gap: 10px;
}

.icon-btn {
    width: 40px;
    height: 40px;
    border-radius: 8px;
    border: none;
    background: var(--dark-bg);
    color: var(--text-primary);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: var(--transition);
}

.icon-btn:hover {
    background: var(--hover-bg);
}

.leave-btn {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 8px 16px;
    background: var(--danger);
    color: white;
    border: none;
    border-radius: 8px;
    cursor: pointer;
    transition: var(--transition);
}

.leave-btn:hover {
    background: #d32f2f;
}

/* Main Area */
.main-area {
    flex: 1;
    display: flex;
    overflow: hidden;
}

/* Side Panels */
.side-panel {
    width: 320px;
    background: var(--dark-panel);
    border-right: 1px solid var(--dark-border);
    display: flex;
    flex-direction: column;
    transition: transform 0.3s ease;
    z-index: 90;
}

.right-panel {
    border-right: none;
    border-left: 1px solid var(--dark-border);
}

.panel-header {
    padding: 20px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    border-bottom: 1px solid var(--dark-border);
}

.panel-content {
    flex: 1;
    overflow: auto;
}

.search-box {
    padding: 15px 20px;
    border-bottom: 1px solid var(--dark-border);
}

.search-box input {
    width: 100%;
    padding: 10px 10px 10px 40px;
    background: var(--dark-bg);
    border: 1px solid var(--dark-border);
    border-radius: 8px;
    color: var(--text-primary);
}

.participants-list {
    padding: 20px;
}

.participant-item {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 12px;
    border-radius: 8px;
    margin-bottom: 8px;
    transition: var(--transition);
}

.participant-item:hover {
    background: var(--hover-bg);
}

.participant-avatar {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background: var(--primary);
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 500;
}

.participant-info {
    flex: 1;
}

.participant-name {
    font-weight: 500;
}

.participant-status {
    font-size: 12px;
    color: var(--text-secondary);
}

/* Video Grid */
.video-area {
    flex: 1;
    position: relative;
    overflow: hidden;
}

.video-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 10px;
    padding: 20px;
    height: 100%;
    overflow: auto;
}

.video-card {
    position: relative;
    background: #000;
    border-radius: var(--radius);
    overflow: hidden;
    aspect-ratio: 16/9;
    transition: var(--transition);
}

.video-card:hover {
    transform: scale(1.02);
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.4);
}

.video-card video {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.video-card.local video {
    transform: scaleX(-1);
}

.video-overlay {
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    padding: 15px;
    background: linear-gradient(transparent, rgba(0,0,0,0.8));
    color: white;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.user-info {
    display: flex;
    align-items: center;
    gap: 10px;
}

.user-status {
    display: flex;
    gap: 5px;
}

.status-icon {
    width: 30px;
    height: 30px;
    border-radius: 50%;
    background: rgba(255,255,255,0.2);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 14px;
}

/* Floating Controls */
.floating-controls {
    position: absolute;
    bottom: 30px;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    gap: 10px;
    background: rgba(0,0,0,0.7);
    backdrop-filter: blur(10px);
    padding: 15px;
    border-radius: 50px;
    z-index: 80;
}

.control-btn.floating {
    width: 50px;
    height: 50px;
    border-radius: 50%;
    border: none;
    background: var(--dark-panel);
    color: var(--text-primary);
    cursor: pointer;
    transition: var(--transition);
}

.control-btn.floating:hover {
    background: var(--hover-bg);
    transform: scale(1.1);
}

.control-btn.floating.active {
    background: var(--primary);
    color: white;
}

/* Chat */
.chat-header {
    padding: 20px;
    border-bottom: 1px solid var(--dark-border);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.chat-messages {
    flex: 1;
    padding: 20px;
    overflow-y: auto;
    max-height: 400px;
}

.message {
    margin-bottom: 15px;
    padding: 12px;
    background: var(--dark-bg);
    border-radius: 8px;
}

.message-header {
    display: flex;
    justify-content: space-between;
    margin-bottom: 5px;
    font-size: 12px;
    color: var(--text-secondary);
}

.chat-input-area {
    padding: 20px;
    border-top: 1px solid var(--dark-border);
    display: flex;
    gap: 10px;
}

#chat-input {
    flex: 1;
    padding: 12px 15px;
    background: var(--dark-bg);
    border: 1px solid var(--dark-border);
    border-radius: 8px;
    color: var(--text-primary);
}

.send-btn {
    width: 45px;
    height: 45px;
    border-radius: 8px;
    border: none;
    background: var(--primary);
    color: white;
    cursor: pointer;
    transition: var(--transition);
}

.send-btn:hover {
    background: var(--primary-dark);
}

/* Controls Bar */
.controls-bar {
    padding: 15px 30px;
    background: var(--dark-panel);
    border-top: 1px solid var(--dark-border);
    display: flex;
    justify-content: space-between;
    align-items: center;
    z-index: 100;
}

.controls-left, .controls-center, .controls-right {
    display: flex;
    gap: 10px;
    align-items: center;
}

.control-btn {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 10px 20px;
    background: var(--dark-bg);
    border: none;
    border-radius: 8px;
    color: var(--text-primary);
    cursor: pointer;
    transition: var(--transition);
}

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

.control-btn.large {
    width: 60px;
    height: 60px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
}

.control-btn.share {
    background: var(--secondary);
    color: white;
}

.end-call-btn {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 12px 24px;
    background: var(--danger);
    color: white;
    border: none;
    border-radius: 8px;
    cursor: pointer;
    transition: var(--transition);
    font-weight: 500;
}

.end-call-btn:hover {
    background: #d32f2f;
}

/* Badges */
.badge {
    min-width: 20px;
    height: 20px;
    background: var(--danger);
    color: white;
    border-radius: 10px;
    font-size: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 0 6px;
}

/* Responsive */
@media (max-width: 1024px) {
    .side-panel {
        position: absolute;
        height: 100%;
        box-shadow: var(--shadow);
    }
    
    .left-panel {
        transform: translateX(-100%);
    }
    
    .right-panel {
        transform: translateX(100%);
        right: 0;
    }
    
    .side-panel.active {
        transform: translateX(0);
    }
    
    .video-grid {
        grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    }
}

@media (max-width: 768px) {
    .controls-bar {
        flex-direction: column;
        gap: 15px;
        padding: 15px;
    }
    
    .video-grid {
        grid-template-columns: 1fr;
    }
    
    .floating-controls {
        bottom: 100px;
    }
}

/* Animations */
@keyframes fadeIn {
    from { opacity: 0; transform: translateY(20px); }
    to { opacity: 1; transform: translateY(0); }
}

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

/* Screen Share Indicator */
#screen-share-indicator {
    position: absolute;
    top: 20px;
    left: 50%;
    transform: translateX(-50%);
    background: rgba(0,0,0,0.8);
    backdrop-filter: blur(10px);
    padding: 12px 24px;
    border-radius: 30px;
    z-index: 90;
    animation: fadeIn 0.3s ease;
}

.indicator-content {
    display: flex;
    align-items: center;
    gap: 12px;
    color: white;
}

.stop-btn {
    background: var(--danger);
    color: white;
    border: none;
    padding: 6px 12px;
    border-radius: 6px;
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: 6px;
    font-size: 14px;
}

/* Reactions Menu */
.reactions-menu {
    position: absolute;
    bottom: 120px;
    left: 50%;
    transform: translateX(-50%);
    background: rgba(0,0,0,0.8);
    backdrop-filter: blur(10px);
    padding: 15px;
    border-radius: 30px;
    display: flex;
    gap: 10px;
    z-index: 90;
    animation: fadeIn 0.2s ease;
}

.reaction-btn {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    border: none;
    background: rgba(255,255,255,0.1);
    font-size: 20px;
    cursor: pointer;
    transition: var(--transition);
}

.reaction-btn:hover {
    background: rgba(255,255,255,0.2);
    transform: scale(1.2);
}

/* Notifications */
.notification {
    position: fixed;
    top: 20px;
    right: 20px;
    background: var(--dark-panel);
    padding: 15px 20px;
    border-radius: 8px;
    box-shadow: var(--shadow);
    display: flex;
    align-items: center;
    gap: 12px;
    z-index: 1000;
    animation: slideIn 0.3s ease;
}

.notification.success {
    border-left: 4px solid var(--secondary);
}

.notification.warning {
    border-left: 4px solid var(--warning);
}

.notification.error {
    border-left: 4px solid var(--danger);
}

/* Panel Tabs */
.panel-tabs {
    display: flex;
    border-bottom: 1px solid var(--dark-border);
}

.panel-tab {
    flex: 1;
    padding: 15px;
    background: none;
    border: none;
    color: var(--text-secondary);
    cursor: pointer;
    position: relative;
    transition: var(--transition);
}

.panel-tab.active {
    color: var(--primary);
    border-bottom: 2px solid var(--primary);
}

.panel-tab .badge {
    position: absolute;
    top: 5px;
    right: 5px;
}

.tab-content {
    display: none;
    flex: 1;
    overflow: auto;
}

.tab-content.active {
    display: flex;
    flex-direction: column;
}

/* Tools Section */
.tools-section {
    padding: 20px;
    border-bottom: 1px solid var(--dark-border);
}

.tools-section h4 {
    margin-bottom: 15px;
    color: var(--text-primary);
}

.tools-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 10px;
}

.tool-card {
    padding: 15px;
    background: var(--dark-bg);
    border: 1px solid var(--dark-border);
    border-radius: 8px;
    color: var(--text-primary);
    cursor: pointer;
    transition: var(--transition);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 8px;
}

.tool-card:hover {
    background: var(--hover-bg);
    border-color: var(--primary);
}

.tool-card i {
    font-size: 24px;
    color: var(--primary);
}

/* Settings */
.settings-list {
    display: flex;
    flex-direction: column;
    gap: 15px;
}

.setting-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 10px 0;
}

.setting-item select, 
.setting-item input[type="range"] {
    background: var(--dark-bg);
    border: 1px solid var(--dark-border);
    border-radius: 6px;
    color: var(--text-primary);
    padding: 6px 10px;
}

/* Emoji Picker */
.emoji-picker {
    position: absolute;
    bottom: 60px;
    background: var(--dark-panel);
    border: 1px solid var(--dark-border);
    border-radius: 12px;
    padding: 15px;
    display: grid;
    grid-template-columns: repeat(6, 1fr);
    gap: 8px;
    width: 300px;
    max-height: 200px;
    overflow-y: auto;
    z-index: 100;
}

.emoji-picker button {
    background: none;
    border: none;
    font-size: 24px;
    cursor: pointer;
    padding: 5px;
    border-radius: 6px;
    transition: var(--transition);
}

.emoji-picker button:hover {
    background: var(--hover-bg);
}

/* Connection Status */
.connection-status {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 8px 12px;
    background: var(--dark-bg);
    border-radius: 8px;
    font-size: 14px;
}

.connection-status i {
    color: var(--secondary);
}