/* Professional Enterprise Design System */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    background: linear-gradient(135deg, #1a1a2e 0%, #16213e 50%, #0f3460 100%);
    overflow: hidden;
    height: 100vh;
    color: #ffffff;
}

/* Fullscreen container */
.fullscreen-container {
    position: relative;
    width: 100vw;
    height: 100vh;
    overflow: hidden;
}

/* Video background */
.video-background {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 1;
}

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

#canvas {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: 2;
}

/* Professional Header */
.app-header {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    z-index: 10;
    background: rgba(26, 26, 46, 0.95);
    backdrop-filter: blur(20px);
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
    padding: 1rem 2rem;
}

.header-content {
    display: flex;
    justify-content: space-between;
    align-items: center;
    max-width: 1400px;
    margin: 0 auto;
}

.logo-section {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.logo-icon {
    width: 48px;
    height: 48px;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    font-size: 1.2rem;
    color: white;
    box-shadow: 0 4px 20px rgba(102, 126, 234, 0.3);
}

.logo-text h1 {
    font-size: 1.8rem;
    font-weight: 700;
    color: #ffffff;
    margin: 0;
}

.subtitle {
    font-size: 0.9rem;
    color: rgba(255, 255, 255, 0.7);
    font-weight: 400;
}

.header-actions {
    display: flex;
    gap: 1rem;
}

.header-btn {
    background: rgba(255, 255, 255, 0.1);
    border: 1px solid rgba(255, 255, 255, 0.2);
    color: #ffffff;
    padding: 0.75rem 1.5rem;
    border-radius: 8px;
    font-size: 0.9rem;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.3s ease;
    backdrop-filter: blur(10px);
}

.header-btn:hover {
    background: rgba(255, 255, 255, 0.15);
    border-color: rgba(255, 255, 255, 0.3);
    transform: translateY(-1px);
}

/* Professional Mode Selection Panel */
.mode-panel {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    background: rgba(26, 26, 46, 0.98);
    backdrop-filter: blur(30px);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 24px;
    padding: 3rem;
    box-shadow: 0 25px 50px rgba(0, 0, 0, 0.5);
    z-index: 10;
    max-width: 800px;
    width: 90%;
}

.panel-header {
    text-align: center;
    margin-bottom: 2.5rem;
}

.panel-header h2 {
    font-size: 2.5rem;
    font-weight: 700;
    color: #ffffff;
    margin-bottom: 0.5rem;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.panel-header p {
    color: rgba(255, 255, 255, 0.7);
    font-size: 1.1rem;
    font-weight: 400;
}

.mode-selection {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 2rem;
    margin-bottom: 2.5rem;
}

.mode-option {
    background: rgba(255, 255, 255, 0.05);
    border: 2px solid rgba(255, 255, 255, 0.1);
    border-radius: 16px;
    padding: 2rem;
    cursor: pointer;
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
}

.mode-option::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(135deg, rgba(102, 126, 234, 0.1) 0%, rgba(118, 75, 162, 0.1) 100%);
    opacity: 0;
    transition: opacity 0.3s ease;
}

.mode-option:hover::before {
    opacity: 1;
}

.mode-option:hover {
    transform: translateY(-4px);
    border-color: rgba(102, 126, 234, 0.3);
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.3);
}

.mode-option.selected {
    border-color: #667eea;
    background: rgba(102, 126, 234, 0.1);
    box-shadow: 0 0 30px rgba(102, 126, 234, 0.3);
}

.mode-icon {
    font-size: 2.5rem;
    margin-bottom: 1rem;
    display: block;
}

.mode-content h3 {
    font-size: 1.5rem;
    font-weight: 600;
    color: #ffffff;
    margin-bottom: 0.5rem;
}

.mode-content p {
    color: rgba(255, 255, 255, 0.7);
    font-size: 0.95rem;
    margin-bottom: 1rem;
    line-height: 1.5;
}

.mode-specs {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.mode-specs span {
    font-size: 0.85rem;
    color: rgba(255, 255, 255, 0.6);
    font-weight: 400;
}

/* Feature Selection */
.feature-selection {
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 16px;
    padding: 2rem;
    margin-top: 2rem;
}

.selection-header {
    text-align: center;
    margin-bottom: 2rem;
}

.selection-header h3 {
    font-size: 1.5rem;
    font-weight: 600;
    color: #ffffff;
    margin-bottom: 0.5rem;
}

.selection-header p {
    color: rgba(255, 255, 255, 0.7);
    font-size: 1rem;
}

.feature-toggles {
    display: flex;
    flex-direction: column;
    gap: 1rem;
    margin-bottom: 2rem;
}

.feature-toggle {
    display: flex;
    align-items: center;
    padding: 1.5rem;
    background: rgba(255, 255, 255, 0.05);
    border: 2px solid rgba(255, 255, 255, 0.1);
    border-radius: 12px;
    cursor: pointer;
    transition: all 0.3s ease;
}

.feature-toggle:hover {
    background: rgba(255, 255, 255, 0.08);
    border-color: rgba(255, 255, 255, 0.2);
    transform: translateX(4px);
}

.feature-toggle input[type="radio"] {
    margin-right: 1rem;
    transform: scale(1.2);
    accent-color: #667eea;
}

.toggle-content {
    display: flex;
    align-items: center;
    gap: 1rem;
    flex: 1;
}

.toggle-icon {
    font-size: 1.5rem;
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(102, 126, 234, 0.1);
    border-radius: 8px;
}

.toggle-text {
    display: flex;
    flex-direction: column;
}

.toggle-title {
    font-size: 1.1rem;
    font-weight: 600;
    color: #ffffff;
    margin-bottom: 0.25rem;
}

.toggle-desc {
    font-size: 0.9rem;
    color: rgba(255, 255, 255, 0.6);
}

.start-analysis-btn {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    border: none;
    padding: 1rem 2rem;
    border-radius: 12px;
    font-size: 1.1rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    box-shadow: 0 8px 25px rgba(102, 126, 234, 0.3);
    width: 100%;
}

.start-analysis-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 12px 35px rgba(102, 126, 234, 0.4);
}

/* Professional Analysis Dashboard */
.analysis-dashboard {
    position: absolute;
    top: 100px;
    right: 2rem;
    background: rgba(26, 26, 46, 0.98);
    backdrop-filter: blur(30px);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 20px;
    padding: 2rem;
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.3);
    z-index: 5;
    min-width: 400px;
    animation: slideIn 0.5s ease-out;
}

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

.dashboard-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 2rem;
    padding-bottom: 1rem;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.dashboard-title {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.dashboard-title h3 {
    font-size: 1.3rem;
    font-weight: 600;
    color: #ffffff;
}

.status-indicator {
    width: 12px;
    height: 12px;
    border-radius: 50%;
    background: #10b981;
    box-shadow: 0 0 10px rgba(16, 185, 129, 0.5);
}

.status-indicator.detecting {
    background: #f59e0b;
    animation: pulse 1s infinite;
}

@keyframes pulse {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.5; }
}

.dashboard-controls {
    display: flex;
    gap: 0.5rem;
}

.dashboard-controls .control-btn {
    background: rgba(255, 255, 255, 0.1);
    border: 1px solid rgba(255, 255, 255, 0.2);
    color: #ffffff;
    padding: 0.5rem 1rem;
    border-radius: 6px;
    font-size: 0.8rem;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.3s ease;
}

.dashboard-controls .control-btn:hover {
    background: rgba(255, 255, 255, 0.15);
    border-color: rgba(255, 255, 255, 0.3);
}

.metric-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1rem;
}

.metric-card {
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 12px;
    padding: 1.5rem;
    transition: all 0.3s ease;
}

.metric-card:hover {
    background: rgba(255, 255, 255, 0.08);
    border-color: rgba(255, 255, 255, 0.2);
    transform: translateY(-2px);
}

.metric-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 0.75rem;
}

.metric-label {
    font-size: 0.85rem;
    color: rgba(255, 255, 255, 0.7);
    font-weight: 500;
}

.metric-icon {
    font-size: 1rem;
    opacity: 0.7;
}

.metric-value {
    font-size: 1.2rem;
    font-weight: 600;
    color: #ffffff;
}

.metric-value.emotion {
    padding: 0.25rem 0.75rem;
    border-radius: 6px;
    font-size: 1rem;
    font-weight: 500;
}

.metric-value.emotion.happy { background: rgba(16, 185, 129, 0.2); color: #10b981; }
.metric-value.emotion.sad { background: rgba(239, 68, 68, 0.2); color: #ef4444; }
.metric-value.emotion.neutral { background: rgba(107, 114, 128, 0.2); color: #6b7280; }
.metric-value.emotion.surprised { background: rgba(245, 158, 11, 0.2); color: #f59e0b; }
.metric-value.emotion.angry { background: rgba(220, 38, 38, 0.2); color: #dc2626; }

/* Professional Control Panel */
.control-panel {
    position: absolute;
    bottom: 2rem;
    left: 50%;
    transform: translateX(-50%);
    z-index: 5;
}

.control-group {
    display: flex;
    gap: 1rem;
    background: rgba(26, 26, 46, 0.95);
    backdrop-filter: blur(20px);
    border: 1px solid rgba(255, 255, 255, 0.1);
    border-radius: 16px;
    padding: 1rem;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.3);
}

.control-btn {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.75rem 1.5rem;
    border-radius: 10px;
    font-size: 0.9rem;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.3s ease;
    border: none;
    color: #ffffff;
}

.control-btn.primary {
    background: linear-gradient(135deg, #ef4444 0%, #dc2626 100%);
    box-shadow: 0 4px 15px rgba(239, 68, 68, 0.3);
}

.control-btn.primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(239, 68, 68, 0.4);
}

.control-btn.secondary {
    background: rgba(255, 255, 255, 0.1);
    border: 1px solid rgba(255, 255, 255, 0.2);
}

.control-btn.secondary:hover {
    background: rgba(255, 255, 255, 0.15);
    border-color: rgba(255, 255, 255, 0.3);
    transform: translateY(-1px);
}

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

.btn-text {
    font-weight: 500;
}

/* Professional Loading Overlay */
.loading-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(26, 26, 46, 0.95);
    backdrop-filter: blur(20px);
    display: flex;
    justify-content: center;
    align-items: center;
    z-index: 20;
}

.loading-overlay.hidden {
    display: none;
}

.loading-content {
    text-align: center;
    color: white;
}

.loading-spinner {
    width: 60px;
    height: 60px;
    border: 4px solid rgba(255, 255, 255, 0.1);
    border-top: 4px solid #667eea;
    border-radius: 50%;
    animation: spin 1s linear infinite;
    margin: 0 auto 2rem;
}

@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

.loading-text h3 {
    font-size: 1.5rem;
    font-weight: 600;
    margin-bottom: 0.5rem;
    color: #ffffff;
}

.loading-text p {
    font-size: 1rem;
    color: rgba(255, 255, 255, 0.7);
    font-weight: 400;
}

/* Responsive Design */
@media (max-width: 768px) {
    .mode-selection {
        grid-template-columns: 1fr;
        gap: 1.5rem;
    }
    
    .mode-panel {
        padding: 2rem 1.5rem;
        margin: 1rem;
    }
    
    .analysis-dashboard {
        top: 80px;
        right: 1rem;
        left: 1rem;
        min-width: auto;
    }
    
    .metric-grid {
        grid-template-columns: 1fr;
    }
    
    .control-group {
        flex-direction: column;
        gap: 0.5rem;
    }
    
    .header-content {
        flex-direction: column;
        gap: 1rem;
        text-align: center;
    }
}