/* FocusFlow - Pomodoro with Screen Monitoring */
:root {
    --primary: #6366f1;
    --primary-dark: #4f46e5;
    --primary-light: #818cf8;
    --secondary: #10b981;
    --danger: #ef4444;
    --warning: #f59e0b;
    --bg-primary: #0f172a;
    --bg-secondary: #1e293b;
    --bg-tertiary: #334155;
    --text-primary: #f8fafc;
    --text-secondary: #94a3b8;
    --text-muted: #64748b;
    --border: #334155;
    --shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.3);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.4);
    --radius: 12px;
    --radius-lg: 16px;
    --transition: all 0.3s ease;
}

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

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

.app-container {
    max-width: 800px;
    margin: 0 auto;
    padding: 20px;
    min-height: 100vh;
}

/* Header */
.header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 32px;
    padding-bottom: 16px;
    border-bottom: 1px solid var(--border);
}

.logo {
    display: flex;
    align-items: center;
    gap: 12px;
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--primary);
}

.logo svg {
    color: var(--primary);
}

.nav-tabs {
    display: flex;
    gap: 8px;
    background: var(--bg-secondary);
    padding: 4px;
    border-radius: var(--radius);
}

.nav-tab {
    padding: 8px 16px;
    border: none;
    background: transparent;
    color: var(--text-secondary);
    font-size: 0.9rem;
    font-weight: 500;
    border-radius: 8px;
    cursor: pointer;
    transition: var(--transition);
}

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

.nav-tab.active {
    background: var(--primary);
    color: white;
}

/* Tab Content */
.tab-content {
    display: none;
    animation: fadeIn 0.3s ease;
}

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

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

/* Timer Section */
.timer-container {
    text-align: center;
    padding: 20px 0;
}

.task-input-section {
    margin-bottom: 32px;
}

.task-input-section label {
    display: block;
    margin-bottom: 8px;
    color: var(--text-secondary);
    font-size: 0.9rem;
}

.task-input-section input {
    width: 100%;
    max-width: 400px;
    padding: 14px 20px;
    font-size: 1rem;
    border: 2px solid var(--border);
    border-radius: var(--radius);
    background: var(--bg-secondary);
    color: var(--text-primary);
    transition: var(--transition);
}

.task-input-section input:focus {
    outline: none;
    border-color: var(--primary);
}

.task-input-section input::placeholder {
    color: var(--text-muted);
}

.task-tags {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 8px;
    margin-top: 12px;
}

.task-tag {
    padding: 6px 14px;
    background: var(--bg-tertiary);
    border: 1px solid var(--border);
    border-radius: 20px;
    font-size: 0.85rem;
    color: var(--text-secondary);
    cursor: pointer;
    transition: var(--transition);
}

.task-tag:hover {
    background: var(--primary);
    color: white;
    border-color: var(--primary);
}

/* Timer Display */
.timer-display {
    margin: 40px 0;
}

.timer-circle {
    position: relative;
    width: 280px;
    height: 280px;
    margin: 0 auto;
}

.timer-progress {
    width: 100%;
    height: 100%;
    transform: rotate(-90deg);
}

.timer-track {
    fill: none;
    stroke: var(--bg-tertiary);
    stroke-width: 4;
}

.timer-fill {
    fill: none;
    stroke: var(--primary);
    stroke-width: 4;
    stroke-linecap: round;
    transition: stroke-dashoffset 1s linear;
}

.timer-text {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    text-align: center;
}

.time {
    display: block;
    font-size: 4rem;
    font-weight: 700;
    font-variant-numeric: tabular-nums;
    letter-spacing: -2px;
}

.label {
    display: block;
    margin-top: 8px;
    color: var(--text-secondary);
    font-size: 1rem;
    text-transform: uppercase;
    letter-spacing: 2px;
}

/* Timer Controls */
.timer-controls {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 16px;
    margin: 32px 0;
}

.btn {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 12px 24px;
    font-size: 0.95rem;
    font-weight: 600;
    border: none;
    border-radius: var(--radius);
    cursor: pointer;
    transition: var(--transition);
}

.btn svg {
    width: 20px;
    height: 20px;
}

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

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

.btn-secondary {
    background: var(--bg-tertiary);
    color: var(--text-primary);
}

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

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

.btn-danger:hover {
    background: #dc2626;
}

.btn-large {
    padding: 16px 32px;
    font-size: 1.1rem;
}

.btn-large svg {
    width: 24px;
    height: 24px;
}

/* Session Info */
.session-info {
    display: flex;
    justify-content: center;
    gap: 40px;
    margin-top: 40px;
    padding: 24px;
    background: var(--bg-secondary);
    border-radius: var(--radius-lg);
}

.info-item {
    text-align: center;
}

.info-label {
    display: block;
    font-size: 0.85rem;
    color: var(--text-secondary);
    margin-bottom: 4px;
}

.info-value {
    display: block;
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--primary);
}

/* Monitoring Panel */
.monitoring-panel {
    margin-top: 32px;
    padding: 20px;
    background: var(--bg-secondary);
    border-radius: var(--radius-lg);
    border: 1px solid var(--border);
}

.panel-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 16px;
}

.panel-title {
    display: flex;
    align-items: center;
    gap: 10px;
    font-weight: 600;
    color: var(--text-primary);
}

.panel-title svg {
    color: var(--primary);
}

/* Toggle Switch */
.toggle-switch {
    position: relative;
    display: inline-block;
    width: 50px;
    height: 26px;
}

.toggle-switch input {
    opacity: 0;
    width: 0;
    height: 0;
}

.toggle-slider {
    position: absolute;
    cursor: pointer;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: var(--bg-tertiary);
    border-radius: 26px;
    transition: var(--transition);
}

.toggle-slider:before {
    position: absolute;
    content: "";
    height: 20px;
    width: 20px;
    left: 3px;
    bottom: 3px;
    background: white;
    border-radius: 50%;
    transition: var(--transition);
}

.toggle-switch input:checked + .toggle-slider {
    background: var(--primary);
}

.toggle-switch input:checked + .toggle-slider:before {
    transform: translateX(24px);
}

/* Monitor Status */
.monitor-status {
    display: flex;
    align-items: center;
    gap: 10px;
}

.status-dot {
    width: 10px;
    height: 10px;
    border-radius: 50%;
    background: var(--text-muted);
}

.status-dot.active {
    background: var(--secondary);
    box-shadow: 0 0 10px var(--secondary);
    animation: pulse 2s infinite;
}

.status-dot.inactive {
    background: var(--text-muted);
}

.status-dot.warning {
    background: var(--warning);
    animation: pulse 1s infinite;
}

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

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

.monitor-details {
    margin-top: 16px;
    padding-top: 16px;
    border-top: 1px solid var(--border);
}

.monitor-details p {
    color: var(--text-secondary);
    font-size: 0.9rem;
    margin-bottom: 12px;
}

.allowed-apps {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
}

.allowed-apps span {
    padding: 6px 12px;
    background: var(--bg-tertiary);
    border-radius: 6px;
    font-size: 0.85rem;
    color: var(--text-secondary);
}

/* Stats Tab */
.stats-container {
    padding: 20px 0;
}

.stats-container h2 {
    margin-bottom: 24px;
    font-size: 1.5rem;
}

.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
    gap: 16px;
    margin-bottom: 32px;
}

.stat-card {
    padding: 24px;
    background: var(--bg-secondary);
    border-radius: var(--radius-lg);
    text-align: center;
    transition: var(--transition);
}

.stat-card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-lg);
}

.stat-icon {
    font-size: 2rem;
    margin-bottom: 12px;
}

.stat-value {
    font-size: 2rem;
    font-weight: 700;
    color: var(--primary);
    margin-bottom: 4px;
}

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

/* Charts Section */
.charts-section {
    display: grid;
    gap: 24px;
    margin-bottom: 32px;
}

.chart-container {
    padding: 24px;
    background: var(--bg-secondary);
    border-radius: var(--radius-lg);
}

.chart-container h3 {
    margin-bottom: 20px;
    font-size: 1.1rem;
    color: var(--text-primary);
}

.chart {
    display: flex;
    align-items: flex-end;
    justify-content: space-around;
    height: 150px;
    gap: 8px;
    padding: 0 10px;
}

.chart-bar {
    flex: 1;
    max-width: 40px;
    background: var(--primary);
    border-radius: 6px 6px 0 0;
    transition: var(--transition);
    position: relative;
}

.chart-bar:hover {
    opacity: 0.8;
}

.chart-bar.break {
    background: var(--secondary);
}

.chart-bar-label {
    position: absolute;
    bottom: -20px;
    left: 50%;
    transform: translateX(-50%);
    font-size: 0.75rem;
    color: var(--text-muted);
}

.chart-legend {
    display: flex;
    justify-content: center;
    gap: 24px;
    margin-top: 32px;
}

.legend-item {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 0.9rem;
    color: var(--text-secondary);
}

.legend-color {
    width: 12px;
    height: 12px;
    border-radius: 3px;
}

.legend-color.focus {
    background: var(--primary);
}

.legend-color.break {
    background: var(--secondary);
}

/* Task Distribution */
.task-list {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.task-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 12px 16px;
    background: var(--bg-tertiary);
    border-radius: var(--radius);
}

.task-name {
    font-size: 0.9rem;
    color: var(--text-primary);
}

.task-count {
    font-size: 0.85rem;
    color: var(--primary);
    font-weight: 600;
}

.task-bar {
    width: 100%;
    height: 6px;
    background: var(--bg-secondary);
    border-radius: 3px;
    margin-top: 8px;
    overflow: hidden;
}

.task-bar-fill {
    height: 100%;
    background: var(--primary);
    border-radius: 3px;
    transition: width 0.5s ease;
}

/* History Section */
.history-section {
    padding: 24px;
    background: var(--bg-secondary);
    border-radius: var(--radius-lg);
}

.history-section h3 {
    margin-bottom: 20px;
    font-size: 1.1rem;
}

.session-list {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.session-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 16px;
    background: var(--bg-tertiary);
    border-radius: var(--radius);
    transition: var(--transition);
}

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

.session-info-left {
    display: flex;
    align-items: center;
    gap: 12px;
}

.session-icon {
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--primary);
    border-radius: 10px;
    font-size: 1.2rem;
}

.session-icon.break {
    background: var(--secondary);
}

.session-details h4 {
    font-size: 0.95rem;
    font-weight: 600;
    margin-bottom: 2px;
}

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

.session-duration {
    font-size: 0.9rem;
    font-weight: 600;
    color: var(--primary);
}

.session-duration.completed {
    color: var(--secondary);
}

/* Settings Tab */
.settings-container {
    padding: 20px 0;
}

.settings-container h2 {
    margin-bottom: 24px;
    font-size: 1.5rem;
}

.settings-section {
    margin-bottom: 32px;
    padding: 24px;
    background: var(--bg-secondary);
    border-radius: var(--radius-lg);
}

.settings-section h3 {
    margin-bottom: 20px;
    font-size: 1.1rem;
    color: var(--text-primary);
}

.setting-item {
    margin-bottom: 20px;
}

.setting-item:last-child {
    margin-bottom: 0;
}

.setting-item label {
    display: block;
    margin-bottom: 8px;
    font-size: 0.9rem;
    color: var(--text-secondary);
}

.setting-item input[type="number"] {
    width: 100%;
    max-width: 200px;
    padding: 10px 14px;
    background: var(--bg-tertiary);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    color: var(--text-primary);
    font-size: 0.95rem;
}

.setting-item.checkbox {
    display: flex;
    align-items: center;
    gap: 12px;
}

.setting-item.checkbox input {
    width: 20px;
    height: 20px;
    accent-color: var(--primary);
}

.setting-item.checkbox label {
    margin-bottom: 0;
}

/* Modal */
.modal {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.8);
    z-index: 1000;
    align-items: center;
    justify-content: center;
    backdrop-filter: blur(4px);
}

.modal.active {
    display: flex;
    animation: fadeIn 0.2s ease;
}

.modal-content {
    background: var(--bg-secondary);
    padding: 32px;
    border-radius: var(--radius-lg);
    text-align: center;
    max-width: 400px;
    width: 90%;
    box-shadow: var(--shadow-lg);
}

.modal-content.warning {
    border: 2px solid var(--warning);
}

.modal-icon {
    font-size: 3rem;
    margin-bottom: 16px;
}

.modal-content h3 {
    margin-bottom: 12px;
    font-size: 1.3rem;
}

.modal-content p {
    color: var(--text-secondary);
    margin-bottom: 24px;
}

.modal-actions {
    display: flex;
    gap: 12px;
    justify-content: center;
}

/* Toast */
.toast {
    position: fixed;
    bottom: 24px;
    left: 50%;
    transform: translateX(-50%) translateY(100px);
    padding: 14px 24px;
    background: var(--bg-secondary);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    box-shadow: var(--shadow-lg);
    z-index: 1001;
    opacity: 0;
    transition: all 0.3s ease;
}

.toast.active {
    transform: translateX(-50%) translateY(0);
    opacity: 1;
}

.toast-message {
    font-size: 0.95rem;
    color: var(--text-primary);
}

/* Responsive */
@media (max-width: 600px) {
    .app-container {
        padding: 16px;
    }

    .header {
        flex-direction: column;
        gap: 16px;
    }

    .timer-circle {
        width: 240px;
        height: 240px;
    }

    .time {
        font-size: 3rem;
    }

    .timer-controls {
        flex-wrap: wrap;
    }

    .session-info {
        flex-direction: column;
        gap: 20px;
    }

    .stats-grid {
        grid-template-columns: repeat(2, 1fr);
    }

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

/* Break mode styles */
body.break-mode {
    --primary: #10b981;
    --primary-dark: #059669;
    --primary-light: #34d399;
}

/* Warning mode styles */
body.warning-mode {
    --primary: #f59e0b;
    --primary-dark: #d97706;
}

/* Focus mode - dimmed */
body.focus-mode .monitoring-panel,
body.focus-mode .session-info {
    opacity: 0.7;
    transition: opacity 0.3s ease;
}

body.focus-mode .monitoring-panel:hover,
body.focus-mode .session-info:hover {
    opacity: 1;
}