:root {
    --bg-primary: #1a1a2e;
    --bg-secondary: #16213e;
    --bg-card: #0f1419;
    --text-primary: #eaeaea;
    --text-secondary: #a0a0a0;
    --accent: #4a90e2;
    --accent-hover: #357abd;
    --success: #4caf50;
    --danger: #f44336;
    --warning: #ff9800;
    --border: #2a2a3e;
}

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

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

.container {
    max-width: 800px;
    margin: 0 auto;
    padding: 2rem 1rem;
}

/* Screens */
.screen {
    animation: fadeIn 0.3s ease-in;
}

.screen.hidden {
    display: none;
}

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

/* Cards */
.card {
    background: var(--bg-card);
    border: 1px solid var(--border);
    border-radius: 12px;
    padding: 2rem;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.3);
}

/* Header */
header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 2rem;
    padding-bottom: 1rem;
    border-bottom: 1px solid var(--border);
}

header h1 {
    font-size: 1.5rem;
    color: var(--accent);
}

/* Form Elements */
.form-group {
    margin-bottom: 1.5rem;
}

.form-group label {
    display: block;
    margin-bottom: 0.5rem;
    color: var(--text-secondary);
    font-size: 0.9rem;
    font-weight: 500;
}

.input {
    width: 100%;
    padding: 0.75rem 1rem;
    background: var(--bg-secondary);
    border: 1px solid var(--border);
    border-radius: 8px;
    color: var(--text-primary);
    font-size: 1rem;
    transition: border-color 0.2s;
}

.input:focus {
    outline: none;
    border-color: var(--accent);
}

/* Buttons */
.btn {
    padding: 0.75rem 1.5rem;
    border: none;
    border-radius: 8px;
    font-size: 1rem;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.2s;
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
}

.btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.4);
}

.btn:active {
    transform: translateY(0);
}

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

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

.btn-secondary {
    background: var(--bg-secondary);
    color: var(--text-primary);
    border: 1px solid var(--border);
}

.btn-secondary:hover {
    background: var(--border);
}

.btn-warning {
    background: var(--warning);
    color: white;
}

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

.btn-outline {
    background: transparent;
    color: var(--accent);
    border: 2px solid var(--accent);
}

.btn-large {
    padding: 1.25rem 2rem;
    font-size: 1.2rem;
    width: 100%;
}

.icon {
    font-size: 1.2em;
}

/* Login Screen */
#login-screen .card {
    max-width: 400px;
    margin: 4rem auto;
    text-align: center;
}

#login-screen h1 {
    color: var(--accent);
    margin-bottom: 0.5rem;
    font-size: 2rem;
}

.subtitle {
    color: var(--text-secondary);
    margin-bottom: 2rem;
    font-size: 0.9rem;
}

/* Recording State */
.recording-card {
    text-align: center;
}

.recording-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 2rem;
}

.recording-indicator {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    color: var(--danger);
    font-weight: 600;
}

.pulse {
    width: 12px;
    height: 12px;
    background: var(--danger);
    border-radius: 50%;
    animation: pulse 1.5s infinite;
}

@keyframes pulse {
    0%, 100% {
        opacity: 1;
        transform: scale(1);
    }
    50% {
        opacity: 0.5;
        transform: scale(1.2);
    }
}

.timer-display {
    font-size: 4rem;
    font-weight: 700;
    font-variant-numeric: tabular-nums;
    margin: 2rem 0;
    color: var(--accent);
}

.recording-stats {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1rem;
    margin: 2rem 0;
    padding: 1.5rem;
    background: var(--bg-secondary);
    border-radius: 8px;
}

.stat {
    display: flex;
    flex-direction: column;
    gap: 0.25rem;
}

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

.stat-value {
    font-size: 1.5rem;
    font-weight: 600;
    color: var(--text-primary);
}

.recording-actions {
    display: flex;
    gap: 1rem;
    margin-top: 2rem;
}

.recording-actions .btn {
    flex: 1;
}

/* Processing State */
.progress-container {
    margin: 2rem 0;
}

.progress-bar {
    width: 100%;
    height: 24px;
    background: var(--bg-secondary);
    border-radius: 12px;
    overflow: hidden;
    border: 1px solid var(--border);
}

.progress-fill {
    height: 100%;
    background: linear-gradient(90deg, var(--accent), var(--success));
    transition: width 0.3s ease;
    border-radius: 12px;
}

.progress-text {
    text-align: center;
    margin-top: 0.5rem;
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--accent);
}

.status-text {
    text-align: center;
    color: var(--text-secondary);
    margin-top: 1rem;
    font-size: 1rem;
}

/* Completed State */
.completed-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1.5rem;
}

.success-badge {
    background: var(--success);
    color: white;
    padding: 0.5rem 1rem;
    border-radius: 20px;
    font-size: 0.9rem;
    font-weight: 600;
}

.transcript-info {
    display: flex;
    gap: 2rem;
    margin-bottom: 1.5rem;
    padding: 1rem;
    background: var(--bg-secondary);
    border-radius: 8px;
}

.info-item {
    display: flex;
    gap: 0.5rem;
}

.info-label {
    color: var(--text-secondary);
    font-size: 0.9rem;
}

.info-value {
    color: var(--text-primary);
    font-weight: 600;
    font-size: 0.9rem;
}

.transcript-textarea {
    width: 100%;
    min-height: 300px;
    padding: 1rem;
    background: var(--bg-secondary);
    border: 1px solid var(--border);
    border-radius: 8px;
    color: var(--text-primary);
    font-family: inherit;
    font-size: 0.95rem;
    line-height: 1.6;
    resize: vertical;
}

.action-buttons {
    display: flex;
    gap: 1rem;
    flex-wrap: wrap;
}

.action-buttons .btn {
    flex: 1;
    min-width: 150px;
}

/* Sessions List */
.sessions-list {
    max-height: 400px;
    overflow-y: auto;
}

.session-item {
    padding: 1rem;
    background: var(--bg-secondary);
    border: 1px solid var(--border);
    border-radius: 8px;
    margin-bottom: 0.75rem;
    cursor: pointer;
    transition: all 0.2s;
}

.session-item:hover {
    background: var(--border);
    transform: translateX(4px);
}

.session-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 0.5rem;
}

.session-title {
    font-weight: 600;
    color: var(--text-primary);
}

.session-status {
    padding: 0.25rem 0.75rem;
    border-radius: 12px;
    font-size: 0.75rem;
    font-weight: 600;
}

.session-status.completed {
    background: var(--success);
    color: white;
}

.session-status.processing {
    background: var(--warning);
    color: white;
}

.session-status.failed {
    background: var(--danger);
    color: white;
}

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

/* Messages */
.error-message {
    color: var(--danger);
    margin-top: 1rem;
    padding: 0.75rem;
    background: rgba(244, 67, 54, 0.1);
    border: 1px solid var(--danger);
    border-radius: 8px;
    font-size: 0.9rem;
}

.error-message:empty {
    display: none;
}

.success-message {
    color: var(--success);
    margin-top: 1rem;
    padding: 0.75rem;
    background: rgba(76, 175, 80, 0.1);
    border: 1px solid var(--success);
    border-radius: 8px;
    font-size: 0.9rem;
    text-align: center;
}

.success-message.hidden {
    display: none;
}

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

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

    .card {
        padding: 1.5rem;
    }

    .timer-display {
        font-size: 3rem;
    }

    .recording-stats {
        grid-template-columns: 1fr;
    }

    .recording-actions {
        flex-direction: column;
    }

    .action-buttons {
        flex-direction: column;
    }

    .action-buttons .btn {
        width: 100%;
    }

    header h1 {
        font-size: 1.25rem;
    }

    .transcript-info {
        flex-direction: column;
        gap: 0.5rem;
    }
}

/* Dark mode media query */
@media (prefers-color-scheme: light) {
    :root {
        --bg-primary: #f5f5f5;
        --bg-secondary: #ffffff;
        --bg-card: #ffffff;
        --text-primary: #1a1a1a;
        --text-secondary: #666666;
        --border: #e0e0e0;
    }
}