:root {
    --primary-color: #3b82f6;
    --primary-hover: #2563eb;
    --secondary-color: #64748b;
    --success-color: #10b981;
    --danger-color: #ef4444;
    --warning-color: #f59e0b;
    --background: #f8fafc;
    --card-background: #ffffff;
    --text-primary: #1e293b;
    --text-secondary: #64748b;
    --border-color: #e2e8f0;
    --shadow: 0 1px 3px 0 rgba(0, 0, 0, 0.1), 0 1px 2px 0 rgba(0, 0, 0, 0.06);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
}

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

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    background-color: var(--background);
    color: var(--text-primary);
    line-height: 1.6;
    min-height: 100vh;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 2rem;
}

.header {
    text-align: center;
    margin-bottom: 3rem;
}

.header h1 {
    font-size: 2.5rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 0.5rem;
}

.header h1 i {
    color: var(--primary-color);
    margin-right: 0.5rem;
}

.header p {
    font-size: 1.1rem;
    color: var(--text-secondary);
}

.main-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 2rem;
    position: relative;
}

.card {
    background: var(--card-background);
    border-radius: 12px;
    padding: 1.5rem;
    box-shadow: var(--shadow);
    border: 1px solid var(--border-color);
    transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.card:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

.card h3 {
    font-size: 1.25rem;
    font-weight: 600;
    margin-bottom: 1rem;
    color: var(--text-primary);
}

.card h3 i {
    color: var(--primary-color);
    margin-right: 0.5rem;
}

.status-card {
    grid-column: 1 / -1;
}

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

.status-indicator {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.5rem 1rem;
    border-radius: 6px;
    font-weight: 500;
}

.status-healthy {
    background-color: rgba(16, 185, 129, 0.1);
    color: var(--success-color);
}

.status-error {
    background-color: rgba(239, 68, 68, 0.1);
    color: var(--danger-color);
}

.status-warning {
    background-color: rgba(245, 158, 11, 0.15);
    color: var(--warning-color);
}

.upload-area {
    border: 2px dashed var(--border-color);
    border-radius: 8px;
    padding: 2rem;
    text-align: center;
    cursor: pointer;
    transition: all 0.3s ease;
    margin-bottom: 1rem;
}

.upload-area:hover,
.upload-area.drag-over {
    border-color: var(--primary-color);
    background-color: rgba(59, 130, 246, 0.05);
}

.upload-content {
    pointer-events: none;
}

.upload-icon {
    font-size: 3rem;
    color: var(--text-secondary);
    margin-bottom: 1rem;
}

.upload-area:hover .upload-icon {
    color: var(--primary-color);
}

.browse-text {
    color: var(--primary-color);
    font-weight: 500;
    text-decoration: underline;
}

.upload-hint {
    font-size: 0.875rem;
    color: var(--text-secondary);
    margin-top: 0.5rem;
}

.recording-controls {
    display: flex;
    gap: 1rem;
    margin-bottom: 1rem;
}

.recording-status {
    margin: 1rem 0;
    font-weight: 500;
}

.btn {
    background: var(--primary-color);
    color: white;
    border: none;
    padding: 0.75rem 1.5rem;
    border-radius: 8px;
    font-size: 0.875rem;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.2s ease;
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    text-decoration: none;
}

.btn:hover:not(:disabled) {
    background: var(--primary-hover);
    transform: translateY(-1px);
}

.btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
    transform: none;
}

.btn-record {
    background: var(--success-color);
}

.btn-record:hover:not(:disabled) {
    background: #059669;
}

.btn-record.recording {
    background: var(--danger-color);
    animation: pulse 2s infinite;
}

@keyframes pulse {
    0% { transform: scale(1); }
    50% { transform: scale(1.05); }
    100% { transform: scale(1); }
}

.btn-stop {
    background: var(--danger-color);
}

.btn-stop:hover:not(:disabled) {
    background: #dc2626;
}

.btn-play {
    background: var(--secondary-color);
}

.btn-play:hover:not(:disabled) {
    background: #475569;
}

.results-section {
    grid-column: 1 / -1;
    margin-top: 2rem;
}

.results-content {
    display: grid;
    gap: 2rem;
}

.transcription-text h4,
.words-timeline h4 {
    font-size: 1.1rem;
    font-weight: 600;
    margin-bottom: 0.75rem;
    color: var(--text-primary);
}

.transcription-output {
    background: #f1f5f9;
    padding: 1rem;
    border-radius: 8px;
    border-left: 4px solid var(--primary-color);
    font-size: 1.1rem;
    line-height: 1.7;
    white-space: pre-wrap;
}

.metadata {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 1rem;
}

.metadata-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0.75rem;
    background: #f8fafc;
    border-radius: 6px;
}

.metadata-item label {
    font-weight: 500;
    color: var(--text-secondary);
}

.metadata-item span {
    font-weight: 600;
    color: var(--text-primary);
}

.words-list {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
}

.word-item {
    display: inline-flex;
    align-items: center;
    background: rgba(59, 130, 246, 0.1);
    border: 1px solid rgba(59, 130, 246, 0.2);
    border-radius: 6px;
    padding: 0.25rem 0.5rem;
    font-size: 0.875rem;
    transition: all 0.2s ease;
    cursor: pointer;
}

.word-item:hover {
    background: rgba(59, 130, 246, 0.2);
    transform: translateY(-1px);
}

.word-text {
    margin-right: 0.5rem;
    font-weight: 500;
}

.word-time {
    font-size: 0.75rem;
    color: var(--text-secondary);
    opacity: 0.8;
}

.loading-overlay {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.5);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 1000;
}

.loading-content {
    background: white;
    padding: 2rem;
    border-radius: 12px;
    text-align: center;
    max-width: 300px;
}

.spinner {
    width: 40px;
    height: 40px;
    border: 4px solid var(--border-color);
    border-top: 4px solid var(--primary-color);
    border-radius: 50%;
    animation: spin 1s linear infinite;
    margin: 0 auto 1rem;
}

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

.loading {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    color: var(--text-secondary);
}

.loading::after {
    content: '';
    width: 16px;
    height: 16px;
    border: 2px solid transparent;
    border-top: 2px solid var(--text-secondary);
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

/* Responsive Design */
@media (max-width: 768px) {
    .container {
        padding: 1rem;
    }

    .main-content {
        grid-template-columns: 1fr;
        gap: 1.5rem;
    }

    .header h1 {
        font-size: 2rem;
    }

    .recording-controls {
        flex-direction: column;
        gap: 0.75rem;
    }

    .metadata {
        grid-template-columns: 1fr;
    }
}

/* File selected state */
.file-selected .upload-area {
    border-color: var(--success-color);
    background-color: rgba(16, 185, 129, 0.05);
}

.file-selected .upload-icon {
    color: var(--success-color);
}

/* Error states */
.error-message {
    background: rgba(239, 68, 68, 0.1);
    color: var(--danger-color);
    padding: 1rem;
    border-radius: 8px;
    border-left: 4px solid var(--danger-color);
    margin-bottom: 1rem;
}

.success-message {
    background: rgba(16, 185, 129, 0.1);
    color: var(--success-color);
    padding: 1rem;
    border-radius: 8px;
    border-left: 4px solid var(--success-color);
    margin-bottom: 1rem;
}