/* ============================================
   DESIGN TOKENS
   ============================================ */
:root {
    /* Colors */
    --ink: #0F172A;
    --ink-muted: #64748B;
    --ink-subtle: #94A3B8;
    --accent: #3B82F6;
    --accent-hover: #2563EB;
    --accent-light: #EFF6FF;

    --danger: #EF4444;
    --danger-hover: #DC2626;
    --danger-light: #FEE2E2;

    --success: #10B981;
    --success-hover: #059669;

    --warning: #F59E0B;
    --warning-hover: #D97706;

    /* Backgrounds */
    --bg-primary: #FFFFFF;
    --bg-secondary: #F8FAFC;
    --bg-tertiary: #F1F5F9;
    --bg-hover: #F9FAFB;

    /* Borders */
    --border: #E2E8F0;
    --border-light: #F1F5F9;
    --border-dark: #CBD5E1;

    /* Shadows */
    --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.04);
    --shadow-md: 0 4px 6px rgba(0, 0, 0, 0.07);
    --shadow-lg: 0 10px 20px rgba(0, 0, 0, 0.08);
    --shadow-xl: 0 20px 25px rgba(0, 0, 0, 0.1);

    /* Border Radius */
    --radius-sm: 4px;
    --radius-md: 8px;
    --radius-lg: 12px;
    --radius-full: 9999px;

    /* Spacing Scale */
    --space-1: 0.25rem;
    --space-2: 0.5rem;
    --space-3: 0.75rem;
    --space-4: 1rem;
    --space-5: 1.25rem;
    --space-6: 1.5rem;
    --space-8: 2rem;
    --space-10: 2.5rem;
    --space-12: 3rem;

    /* Typography */
    --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    --font-mono: 'Monaco', 'Courier New', monospace;

    --text-xs: 0.6875rem;
    --text-sm: 0.8125rem;
    --text-base: 0.875rem;
    --text-md: 0.9375rem;
    --text-lg: 1rem;
    --text-xl: 1.125rem;
    --text-2xl: 1.25rem;

    --tracking-tight: -0.01em;
    --tracking-normal: 0em;
    --tracking-wide: 0.015em;
    --tracking-wider: 0.025em;
}

/* Dark Mode Theme */
[data-theme="dark"] {
    /* Colors */
    --ink: #F1F5F9;
    --ink-muted: #94A3B8;
    --ink-subtle: #64748B;
    --accent: #60A5FA;
    --accent-hover: #3B82F6;
    --accent-light: #1E3A5F;

    --danger: #F87171;
    --danger-hover: #EF4444;
    --danger-light: #7F1D1D;

    --success: #34D399;
    --success-hover: #10B981;

    --warning: #FBBF24;
    --warning-hover: #F59E0B;

    /* Backgrounds */
    --bg-primary: #1E293B;
    --bg-secondary: #0F172A;
    --bg-tertiary: #334155;
    --bg-hover: #334155;

    /* Borders */
    --border: #334155;
    --border-light: #1E293B;
    --border-dark: #475569;

    /* Shadows - slightly more prominent in dark mode */
    --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.3);
    --shadow-md: 0 4px 6px rgba(0, 0, 0, 0.4);
    --shadow-lg: 0 10px 20px rgba(0, 0, 0, 0.5);
    --shadow-xl: 0 20px 25px rgba(0, 0, 0, 0.6);
}

/* ============================================
   RESET AND BASE
   ============================================ */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: var(--font-sans);
    background: var(--bg-secondary);
    color: var(--ink);
    line-height: 1.6;
    letter-spacing: var(--tracking-normal);
    min-height: 100vh;
    overflow-x: hidden;
    overflow-y: auto;
    display: flex;
    flex-direction: column;
}

/* ============================================
   TOP BAR
   ============================================ */
.top-bar {
    background: var(--bg-primary);
    border-bottom: 1px solid var(--border);
    padding: var(--space-4) var(--space-8);
    display: flex;
    justify-content: space-between;
    align-items: center;
    box-shadow: var(--shadow-sm);
    flex-shrink: 0;
    z-index: 100;
}

.title-section h1 {
    font-size: var(--text-xl);
    font-weight: 600;
    margin-bottom: var(--space-1);
    color: var(--ink);
    letter-spacing: var(--tracking-tight);
}

.clock-title-input {
    border: 1px solid var(--border);
    padding: var(--space-2) var(--space-3);
    border-radius: var(--radius-sm);
    font-size: var(--text-base);
    font-family: inherit;
    width: 280px;
    transition: all 0.2s;
    color: var(--ink);
}

.clock-title-input:focus {
    outline: none;
    border-color: var(--accent);
    box-shadow: 0 0 0 3px var(--accent-light);
}

.actions {
    display: flex;
    gap: var(--space-3);
    align-items: center;
}

/* ============================================
   BUTTON SYSTEM
   ============================================ */
.btn {
    padding: var(--space-2) var(--space-4);
    border: none;
    border-radius: var(--radius-md);
    font-family: inherit;
    font-size: var(--text-base);
    font-weight: 500;
    cursor: pointer;
    transition: all 0.2s;
    letter-spacing: var(--tracking-wide);
    display: inline-flex;
    align-items: center;
    gap: var(--space-2);
}

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

.btn-primary:hover {
    background: var(--accent-hover);
    transform: translateY(-1px);
    box-shadow: var(--shadow-md);
}

.btn-secondary {
    background: var(--bg-tertiary);
    color: var(--ink-muted);
}

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

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

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

.btn-danger-outline {
    background: white;
    color: var(--danger);
    border: 1px solid var(--danger);
}

.btn-danger-outline:hover {
    background: var(--danger-light);
}

.btn:disabled {
    opacity: 0.4;
    cursor: not-allowed;
    transform: none !important;
}

.btn-icon {
    font-size: 1.25rem;
    padding: var(--space-2) var(--space-3);
}

.btn-close {
    background: none;
    border: none;
    font-size: 1.5rem;
    color: var(--ink-subtle);
    cursor: pointer;
    padding: 0;
    width: 28px;
    height: 28px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: var(--radius-sm);
    transition: all 0.2s;
}

.btn-close:hover {
    background: var(--bg-hover);
    color: var(--ink);
}

/* FAB-style add buttons */
.btn-add {
    width: 36px;
    height: 36px;
    border-radius: var(--radius-full);
    background: var(--accent);
    color: white;
    border: none;
    font-size: 1.25rem;
    font-weight: 400;
    line-height: 1;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.2s;
    box-shadow: var(--shadow-sm);
}

.btn-add:hover {
    background: var(--accent-hover);
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

/* Small icon buttons */
.btn-icon-sm {
    width: 28px;
    height: 28px;
    padding: 0;
    border: 1px solid var(--border);
    background: var(--bg-primary);
    border-radius: var(--radius-sm);
    font-size: var(--text-sm);
    color: var(--ink-subtle);
    cursor: pointer;
    transition: all 0.2s;
    display: flex;
    align-items: center;
    justify-content: center;
}

.btn-icon-sm:hover {
    background: var(--bg-hover);
    border-color: var(--accent);
    color: var(--accent);
}

.btn-icon-sm.danger:hover {
    border-color: var(--danger);
    color: var(--danger);
    background: var(--danger-light);
}

.btn-icon-sm.clone-btn:hover {
    border-color: var(--accent);
    color: var(--accent);
    background: var(--accent-light);
}

/* ============================================
   LAYOUT
   ============================================ */
.container {
    display: grid;
    grid-template-columns: 360px 1fr;
    flex: 1 0 auto;
    min-height: 600px;
}

/* ============================================
   LEFT PANEL
   ============================================ */
.left-panel {
    position: relative;
    background: var(--bg-primary);
    border-right: 1px solid var(--border);
    overflow-y: auto;
    display: flex;
    flex-direction: column;
    max-height: calc(100vh - 65px);
}

/* Project Name Header */
.project-name-header {
    padding: var(--space-4);
    border-bottom: 1px solid var(--border);
    background: var(--bg-secondary);
    flex-shrink: 0;
}

.project-name-input {
    width: 100%;
    padding: var(--space-2) var(--space-3);
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    font-family: inherit;
    font-size: var(--text-base);
    font-weight: 600;
    color: var(--ink);
    background: var(--bg-primary);
    transition: all 0.2s;
}

.project-name-input:hover {
    border-color: var(--border-dark);
}

.project-name-input:focus {
    outline: none;
    border-color: var(--accent);
    box-shadow: 0 0 0 3px var(--accent-light);
}

.project-name-input::placeholder {
    color: var(--ink-subtle);
    font-weight: 500;
}

/* Timer Controls */
.timer-controls {
    border-bottom: 1px solid var(--border-light);
    background: var(--bg-secondary);
    padding: var(--space-4) var(--space-5);
    flex-shrink: 0;
}

.timer-header {
    margin-bottom: var(--space-3);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.timer-elapsed {
    display: flex;
    align-items: baseline;
    gap: var(--space-2);
}

.timer-label {
    font-size: var(--text-xs);
    font-weight: 600;
    color: var(--ink-subtle);
    text-transform: uppercase;
    letter-spacing: var(--tracking-wider);
}

.timer-time-input {
    font-size: 1.5rem;
    font-weight: 600;
    font-family: var(--font-mono);
    color: var(--ink);
    background: var(--bg-primary);
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    padding: var(--space-2) var(--space-3);
    width: 100px;
    text-align: center;
    transition: all 0.2s;
}

.timer-time-input:hover {
    border-color: var(--border-dark);
}

.timer-time-input:focus {
    outline: none;
    border-color: var(--accent);
    background: var(--bg-secondary);
}

.timer-time-input:read-only {
    border-color: transparent;
    background: transparent;
    cursor: default;
}

.timer-time-input:read-only:hover {
    border-color: transparent;
}

.timer-buttons {
    display: grid;
    grid-template-columns: 1fr 1fr 1fr;
    gap: var(--space-2);
}

.btn-timer {
    padding: var(--space-3) var(--space-2);
    font-size: var(--text-sm);
    font-weight: 600;
    border-radius: var(--radius-md);
}

.btn-timer-start {
    background: var(--success);
    color: white;
}

.btn-timer-start:hover:not(:disabled) {
    background: var(--success-hover);
}

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

.btn-timer-pause:hover:not(:disabled) {
    background: var(--warning-hover);
}

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

.btn-timer-reset:hover:not(:disabled) {
    background: var(--danger-hover);
}

.btn-timer-toggle {
    background: transparent;
    border: none;
    font-size: 1.25rem;
    cursor: pointer;
    padding: var(--space-2);
    border-radius: var(--radius-md);
    transition: all 0.2s;
    opacity: 0.6;
}

.btn-timer-toggle:hover {
    opacity: 1;
    background: var(--bg-primary);
}

.timer-controls.timer-hidden .timer-elapsed,
.timer-controls.timer-hidden .timer-buttons {
    display: none;
}

.timer-controls.timer-hidden {
    padding: var(--space-3) var(--space-5);
}

.timer-controls.timer-hidden .timer-header {
    margin-bottom: 0;
}

/* Panel Header */
.panel-header {
    padding: var(--space-5) var(--space-5);
    border-bottom: 1px solid var(--border);
    display: flex;
    justify-content: space-between;
    align-items: center;
    background: var(--bg-primary);
}

.panel-header h2 {
    font-size: var(--text-lg);
    font-weight: 600;
    color: var(--ink);
    letter-spacing: var(--tracking-tight);
}

.duration-badge {
    background: var(--bg-tertiary);
    padding: var(--space-1) var(--space-3);
    border-radius: var(--radius-full);
    font-size: var(--text-sm);
    font-weight: 600;
    font-family: var(--font-mono);
    color: var(--ink-muted);
}

/* ============================================
   SEGMENTS LIST
   ============================================ */
.segments-list {
    flex: 1;
    overflow-y: auto;
}

.segment-item {
    padding: var(--space-4) var(--space-5);
    border-bottom: 1px solid var(--border-light);
    cursor: pointer;
    transition: all 0.15s;
    display: flex;
    align-items: center;
    gap: var(--space-3);
    position: relative;
}

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

.segment-item:hover .segment-actions {
    opacity: 1;
}

.segment-item.active {
    background: var(--accent-light);
    border-left: 3px solid var(--accent);
}

.segment-color {
    width: 14px;
    height: 14px;
    border-radius: var(--radius-sm);
    flex-shrink: 0;
    box-shadow: var(--shadow-sm);
}

.segment-info {
    flex: 1;
    min-width: 0;
}

.segment-info h4 {
    font-size: var(--text-base);
    font-weight: 500;
    margin-bottom: var(--space-1);
    color: var(--ink);
    letter-spacing: var(--tracking-tight);
}

.segment-meta {
    font-size: var(--text-xs);
    color: var(--ink-subtle);
    font-family: var(--font-mono);
    letter-spacing: var(--tracking-normal);
}

.segment-actions {
    display: flex;
    gap: var(--space-2);
    opacity: 0;
    transition: opacity 0.2s;
}

/* Empty State */
.empty-state {
    text-align: center;
    padding: var(--space-12) var(--space-6);
    color: var(--ink-subtle);
}

.empty-state h3 {
    font-size: var(--text-lg);
    margin-bottom: var(--space-2);
    font-weight: 500;
}

.empty-state p {
    font-size: var(--text-base);
}

/* ============================================
   SEGMENT EDITOR - SLIDE-IN DRAWER
   ============================================ */
.segment-editor {
    position: fixed;
    top: 0;
    right: 0;
    bottom: 0;
    width: 400px;
    background: var(--bg-primary);
    box-shadow: var(--shadow-xl);
    transform: translateX(100%);
    transition: transform 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    z-index: 200;
    display: flex;
    flex-direction: column;
}

.segment-editor:not(.hidden) {
    transform: translateX(0);
}

.segment-editor.hidden {
    transform: translateX(100%);
}

.editor-overlay {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.3);
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.3s;
    z-index: 199;
}

.editor-overlay.active {
    opacity: 1;
    pointer-events: all;
}

.editor-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--space-6) var(--space-6);
    border-bottom: 1px solid var(--border);
}

.editor-header h3 {
    font-size: var(--text-xl);
    font-weight: 600;
    color: var(--ink);
    letter-spacing: var(--tracking-tight);
}

.editor-body {
    flex: 1;
    overflow-y: auto;
    padding: var(--space-6);
}

.form-group {
    margin-bottom: var(--space-5);
}

.form-group label {
    display: block;
    font-size: var(--text-xs);
    font-weight: 600;
    color: var(--ink-muted);
    margin-bottom: var(--space-2);
    text-transform: uppercase;
    letter-spacing: var(--tracking-wider);
}

.form-group input[type="text"],
.form-group input[type="number"],
.form-group textarea {
    width: 100%;
    padding: var(--space-3) var(--space-4);
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    font-family: inherit;
    font-size: var(--text-base);
    transition: all 0.2s;
    color: var(--ink);
    background: var(--bg-primary);
}

.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--accent);
    box-shadow: 0 0 0 3px var(--accent-light);
}

.form-group input[type="color"] {
    width: 100%;
    height: 48px;
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    cursor: pointer;
}

.color-swatches {
    margin-top: var(--space-3);
}

.color-swatches-label {
    font-size: var(--text-xs);
    color: var(--ink-light);
    margin-bottom: var(--space-2);
    font-weight: 500;
}

.color-swatches-grid {
    display: grid;
    grid-template-columns: repeat(6, 1fr);
    gap: var(--space-2);
    margin-bottom: var(--space-2);
}

.color-swatch {
    width: 100%;
    aspect-ratio: 1;
    border-radius: var(--radius-sm);
    border: 2px solid var(--border);
    cursor: pointer;
    transition: all 0.2s;
    position: relative;
}

.color-swatch:hover {
    transform: scale(1.1);
    border-color: var(--ink-light);
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.15);
}

.color-swatch.selected {
    border-color: var(--accent);
    box-shadow: 0 0 0 2px var(--accent-light);
}

.recent-colors {
    border-top: 1px solid var(--border);
    padding-top: var(--space-2);
}

.recent-colors:empty {
    display: none;
}

.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--space-4);
}

.editor-actions {
    display: flex;
    gap: var(--space-3);
    padding: var(--space-6);
    border-top: 1px solid var(--border);
    background: var(--bg-secondary);
}

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

/* ============================================
   RIGHT PANEL - CLOCK HERO
   ============================================ */
.right-panel {
    background: var(--bg-secondary);
    padding: var(--space-8);
    overflow-y: auto;
    overflow-x: hidden;
    display: flex;
    align-items: flex-start;
    justify-content: center;
    max-height: calc(100vh - 65px);
}

.size-control-label {
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-size: var(--text-sm);
    font-weight: 500;
    color: var(--ink-muted);
    letter-spacing: var(--tracking-wide);
}

#clock-size-value {
    font-weight: 600;
    color: var(--accent);
    font-size: var(--text-sm);
}

.size-slider {
    width: 100%;
    height: 6px;
    border-radius: var(--radius-sm);
    background: var(--border);
    outline: none;
    -webkit-appearance: none;
    cursor: pointer;
    transition: background 0.2s;
}

.size-slider:hover {
    background: var(--border-dark);
}

.size-slider::-webkit-slider-thumb {
    -webkit-appearance: none;
    appearance: none;
    width: 18px;
    height: 18px;
    border-radius: 50%;
    background: var(--accent);
    cursor: pointer;
    transition: all 0.2s;
}

.size-slider::-webkit-slider-thumb:hover {
    background: var(--accent-hover);
    transform: scale(1.1);
}

.size-slider::-moz-range-thumb {
    width: 18px;
    height: 18px;
    border-radius: 50%;
    background: var(--accent);
    cursor: pointer;
    border: none;
    transition: all 0.2s;
}

.size-slider::-moz-range-thumb:hover {
    background: var(--accent-hover);
    transform: scale(1.1);
}

.clock-container {
    max-width: 900px;
    width: 100%;
    display: flex;
    flex-direction: column;
    gap: var(--space-6);
    transition: max-width 0.3s ease;
}

.clock-settings {
    display: flex;
    gap: var(--space-8);
    padding: var(--space-4) var(--space-6);
    background: var(--bg-primary);
    border-radius: var(--radius-lg);
    border: 1px solid var(--border);
    box-shadow: var(--shadow-sm);
    flex-shrink: 0;
    align-items: center;
    flex-wrap: wrap;
}

.clock-settings label {
    font-size: var(--text-base);
    font-weight: 500;
    display: flex;
    align-items: center;
    gap: var(--space-3);
    color: var(--ink-muted);
    letter-spacing: var(--tracking-wide);
}

/* Clock Size Control - below clock */
.clock-size-control {
    display: flex;
    flex-direction: column;
    gap: var(--space-3);
    background: var(--bg-primary);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    padding: var(--space-4) var(--space-5);
    box-shadow: var(--shadow-sm);
    flex-shrink: 0;
}

.clock-settings input[type="number"] {
    padding: var(--space-2) var(--space-3);
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    font-family: inherit;
    font-size: var(--text-base);
    width: 80px;
    color: var(--ink);
    background: var(--bg-primary);
}

.clock-settings input[type="checkbox"] {
    cursor: pointer;
    width: 18px;
    height: 18px;
}

/* Clock Canvas - Hero Treatment */
#clock-canvas {
    width: 100%;
    max-width: 900px;
    aspect-ratio: 1 / 1;
    display: block;
    background: var(--bg-primary);
    border-radius: var(--radius-lg);
    border: 1px solid var(--border);
    box-shadow: var(--shadow-lg);
}

/* ============================================
   SVG CLOCK STYLES
   ============================================ */
.clock-base {
    fill: none;
    stroke: var(--border);
    stroke-width: 2;
}

.segment-path {
    cursor: pointer;
    transition: opacity 0.2s;
}

.segment-path:hover {
    opacity: 0.9;
}

.segment-label {
    font-family: var(--font-sans);
    font-size: 14px;
    font-weight: 600;
    letter-spacing: 0.3px;
    fill: #111;
    pointer-events: none;
    user-select: none;
    paint-order: stroke;
    stroke: rgba(255, 255, 255, 0.9);
    stroke-width: 3px;
    stroke-linejoin: round;
}

.time-marker {
    stroke: var(--border-dark);
    stroke-width: 1;
}

.time-label {
    font-family: var(--font-sans);
    font-size: 13px;
    fill: var(--ink-subtle);
    text-anchor: middle;
    letter-spacing: var(--tracking-wide);
}

.center-dot {
    fill: var(--ink-subtle);
}

.timer-hand {
    stroke: #FF4A4A;
    stroke-width: 4;
    stroke-linecap: round;
    filter: drop-shadow(0 0 6px rgba(255, 74, 74, 0.6));
    pointer-events: none;
}

/* ============================================
   POINTERS SECTION
   ============================================ */
.pointers-section {
    border-top: 2px solid var(--border);
    background: var(--bg-primary);
}

.section-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--space-4) var(--space-5);
    border-bottom: 1px solid var(--border-light);
}

.section-header h3 {
    font-size: var(--text-sm);
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: var(--tracking-wider);
    color: var(--ink-muted);
}

.pointers-list {
    max-height: 250px;
    overflow-y: auto;
}

.pointer-item {
    padding: var(--space-3) var(--space-5);
    border-bottom: 1px solid var(--border-light);
    cursor: pointer;
    transition: background 0.15s;
    display: flex;
    align-items: center;
    gap: var(--space-3);
}

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

.pointer-item.active {
    background: #FEF3C7;
    border-left: 3px solid var(--warning);
}

.pointer-marker {
    width: 10px;
    height: 10px;
    border-radius: 50%;
    flex-shrink: 0;
}

.pointer-info {
    flex: 1;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.pointer-label-text {
    font-size: var(--text-base);
    font-weight: 500;
    color: var(--ink);
}

.pointer-time-text {
    font-size: var(--text-xs);
    color: var(--ink-subtle);
    font-family: var(--font-mono);
}

.empty-state-small {
    padding: var(--space-6);
    text-align: center;
    font-size: var(--text-sm);
    color: var(--ink-subtle);
}

/* Pointer Editor (slide-in drawer, similar to segment editor) */
.pointer-editor {
    position: fixed;
    top: 0;
    right: 0;
    bottom: 0;
    width: 400px;
    background: var(--bg-primary);
    box-shadow: var(--shadow-xl);
    transform: translateX(100%);
    transition: transform 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    z-index: 200;
    display: flex;
    flex-direction: column;
}

.pointer-editor:not(.hidden) {
    transform: translateX(0);
}

.pointer-editor.hidden {
    transform: translateX(100%);
}

/* SVG Pointer Styles */
.pointer-line {
    stroke-width: 2;
    stroke-dasharray: 5, 5;
}

/* ============================================
   EXPORT DROPDOWN
   ============================================ */
.export-dropdown {
    position: relative;
}

.export-menu {
    position: absolute;
    top: calc(100% + var(--space-2));
    right: 0;
    background: var(--bg-primary);
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-lg);
    min-width: 160px;
    z-index: 1000;
    overflow: hidden;
}

.export-menu.hidden {
    display: none;
}

.export-menu-item {
    display: block;
    width: 100%;
    padding: var(--space-3) var(--space-4);
    border: none;
    background: none;
    text-align: left;
    font-family: inherit;
    font-size: var(--text-base);
    color: var(--ink);
    cursor: pointer;
    transition: background 0.15s;
}

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

/* ============================================
   MODAL
   ============================================ */
.modal {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.4);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 2000;
}

.modal.hidden {
    display: none;
}

.modal-content {
    background: var(--bg-primary);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-xl);
    max-width: 540px;
    width: 90%;
    max-height: 90vh;
    overflow: auto;
}

.modal-header {
    padding: var(--space-6);
    border-bottom: 1px solid var(--border);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.modal-header h2 {
    font-size: var(--text-2xl);
    font-weight: 600;
    margin: 0;
    color: var(--ink);
    letter-spacing: var(--tracking-tight);
}

.modal-body {
    padding: var(--space-6);
}

.modal-body > p {
    margin-bottom: var(--space-6);
    color: var(--ink-muted);
    font-size: var(--text-base);
}

.restart-options {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--space-4);
    margin-bottom: var(--space-6);
}

.restart-option-btn {
    padding: var(--space-6) var(--space-4);
    border: 2px solid var(--border);
    border-radius: var(--radius-lg);
    background: var(--bg-primary);
    cursor: pointer;
    transition: all 0.2s;
    text-align: center;
}

.restart-option-btn:hover {
    border-color: var(--accent);
    background: var(--accent-light);
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.option-icon {
    font-size: 2.5rem;
    margin-bottom: var(--space-2);
}

.option-title {
    font-weight: 600;
    font-size: var(--text-lg);
    color: var(--ink);
    margin-bottom: var(--space-1);
}

.option-desc {
    font-size: var(--text-sm);
    color: var(--ink-muted);
}

.modal-warning {
    background: #FEF3C7;
    border: 1px solid #FCD34D;
    padding: var(--space-4);
    border-radius: var(--radius-md);
    font-size: var(--text-base);
    color: #92400E;
    text-align: center;
}

/* ============================================
   DRAG AND DROP
   ============================================ */
.segment-item.dragging {
    opacity: 0.5;
}

.segment-item.drag-over {
    border-top: 3px solid var(--accent);
}

/* ============================================
   APP NAVIGATION (index.html)
   ============================================ */
.app-header-group {
    display: flex;
    align-items: center;
    gap: var(--space-6);
}

.app-nav {
    display: flex;
    gap: var(--space-4);
    align-items: center;
}

.app-nav-link {
    font-size: var(--text-sm);
    color: var(--ink-muted);
    text-decoration: none;
    transition: color 0.2s;
    letter-spacing: var(--tracking-wide);
}

.app-nav-link:hover {
    color: var(--accent);
}

/* App Footer (appears below the fold) */
.app-footer {
    background: var(--bg-primary);
    border-top: 1px solid var(--border);
    padding: var(--space-6) var(--space-8);
    flex-shrink: 0;
}

.app-footer-content {
    max-width: 1200px;
    margin: 0 auto;
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: var(--space-6);
    flex-wrap: wrap;
}

.app-footer-content p {
    margin: 0;
    color: var(--ink-muted);
    font-size: var(--text-xs);
}

.app-footer-nav {
    display: flex;
    gap: var(--space-4);
    align-items: center;
}

.app-footer-nav a {
    font-size: var(--text-xs);
    color: var(--ink-muted);
    text-decoration: none;
    transition: color 0.2s;
}

.app-footer-nav a:hover {
    color: var(--accent);
}

/* ============================================
   STATIC PAGES (what-is, tutorial)
   ============================================ */
.page-body {
    background: var(--bg-secondary);
    color: var(--ink);
    font-family: var(--font-sans);
    line-height: 1.6;
    letter-spacing: var(--tracking-normal);
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    overflow-x: hidden;
    overflow-y: auto;
    height: auto;
}

/* Page Header */
.page-header {
    background: var(--bg-primary);
    border-bottom: 1px solid var(--border);
    padding: var(--space-4) var(--space-8);
    box-shadow: var(--shadow-sm);
}

.page-header-content {
    max-width: 1200px;
    margin: 0 auto;
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: var(--space-6);
    flex-wrap: wrap;
}

.page-header-title {
    font-size: var(--text-xl);
    font-weight: 600;
    color: var(--ink);
    letter-spacing: var(--tracking-tight);
    margin: 0;
}

.page-header-actions {
    display: flex;
    align-items: center;
    gap: var(--space-4);
}

.page-nav {
    display: flex;
    gap: var(--space-6);
    align-items: center;
}

.page-nav-link {
    font-size: var(--text-base);
    color: var(--ink-muted);
    text-decoration: none;
    transition: color 0.2s;
    letter-spacing: var(--tracking-wide);
    padding: var(--space-2) 0;
    border-bottom: 2px solid transparent;
}

.page-nav-link:hover {
    color: var(--accent);
}

.page-nav-link.active {
    color: var(--accent);
    border-bottom-color: var(--accent);
}

/* Page Main Content */
.page-main {
    flex: 1;
    padding: var(--space-12) var(--space-8);
    max-width: 900px;
    width: 100%;
    margin: 0 auto;
}

.page-content {
    background: var(--bg-primary);
    padding: var(--space-12);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-md);
}

.page-content h1 {
    font-size: 2.25rem;
    font-weight: 600;
    color: var(--ink);
    letter-spacing: var(--tracking-tight);
    margin-bottom: var(--space-6);
    line-height: 1.2;
}

.page-content h2 {
    font-size: 1.75rem;
    font-weight: 600;
    color: var(--ink);
    letter-spacing: var(--tracking-tight);
    margin-top: var(--space-8);
    margin-bottom: var(--space-4);
    line-height: 1.3;
}

.page-content h3 {
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--ink);
    letter-spacing: var(--tracking-tight);
    margin-top: var(--space-4);
    margin-bottom: var(--space-2);
    line-height: 1.4;
}

.page-content p {
    margin-bottom: var(--space-4);
    color: var(--ink);
    font-size: var(--text-lg);
    line-height: 1.7;
}

.page-content ul {
    margin-bottom: var(--space-4);
    padding-left: var(--space-6);
    color: var(--ink);
    font-size: var(--text-lg);
    line-height: 1.7;
}

.page-content li {
    margin-bottom: var(--space-2);
}

.page-content hr {
    border: none;
    border-top: 1px solid var(--border);
    margin: var(--space-8) 0;
}

.page-content section {
    margin-bottom: var(--space-6);
}

.page-content strong {
    font-weight: 600;
    color: var(--ink);
}

/* Inline Links */
.inline-link {
    color: var(--accent);
    text-decoration: none;
    font-weight: 500;
    transition: color 0.2s;
    border-bottom: 1px solid transparent;
}

.inline-link:hover {
    color: var(--accent-hover);
    border-bottom-color: var(--accent-hover);
}

.cta-link {
    font-size: var(--text-xl);
    font-weight: 600;
}

/* Use Cases Grid */
.use-cases-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--space-6);
    margin: var(--space-6) 0;
}

.use-case {
    background: var(--bg-secondary);
    padding: var(--space-5);
    border-radius: var(--radius-md);
    border: 1px solid var(--border);
}

.use-case h3 {
    font-size: var(--text-lg);
    font-weight: 600;
    color: var(--ink);
    margin-top: 0;
    margin-bottom: var(--space-2);
}

.use-case p {
    font-size: var(--text-base);
    color: var(--ink-muted);
    margin-bottom: 0;
    line-height: 1.6;
}

/* Tutorial Sections */
.tutorial-section {
    margin-bottom: var(--space-6);
}

/* Page Footer */
.page-footer {
    background: var(--bg-primary);
    border-top: 1px solid var(--border);
    padding: var(--space-8);
    margin-top: auto;
}

.page-footer-content {
    max-width: 1200px;
    margin: 0 auto;
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: var(--space-6);
    flex-wrap: wrap;
}

.page-footer-content p {
    margin: 0;
    color: var(--ink-muted);
    font-size: var(--text-sm);
}

.page-footer-nav {
    display: flex;
    gap: var(--space-6);
    align-items: center;
}

.page-footer-nav a {
    font-size: var(--text-sm);
    color: var(--ink-muted);
    text-decoration: none;
    transition: color 0.2s;
}

.page-footer-nav a:hover {
    color: var(--accent);
}

/* Responsive adjustments for pages */
@media (max-width: 768px) {
    .page-main {
        padding: var(--space-6) var(--space-4);
    }

    .page-content {
        padding: var(--space-6);
    }

    .page-content h1 {
        font-size: 1.75rem;
    }

    .page-content h2 {
        font-size: 1.5rem;
    }

    .page-content h3 {
        font-size: 1.125rem;
    }

    .page-header-content {
        flex-direction: column;
        align-items: flex-start;
    }

    .page-nav {
        flex-wrap: wrap;
        gap: var(--space-4);
    }

    .page-footer-content {
        flex-direction: column;
        align-items: flex-start;
    }

    .use-cases-grid {
        grid-template-columns: 1fr;
    }

    .app-header-group {
        flex-direction: column;
        align-items: flex-start;
        gap: var(--space-3);
    }
}

/* ============================================
   RESPONSIVE LAYOUT FOR APP (index.html)
   ============================================ */

/* Medium screens - reduce left panel width */
@media (max-width: 1400px) {
    .container {
        grid-template-columns: 320px 1fr;
    }
}

/* Tablets and smaller - stack vertically */
@media (max-width: 1024px) {
    .container {
        grid-template-columns: 1fr;
        min-height: auto;
    }

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

    .right-panel {
        padding: var(--space-6) var(--space-4);
        max-height: none;
    }

    .clock-container {
        max-width: 700px;
    }

    #clock-canvas {
        max-width: 700px;
    }
}

/* Mobile screens */
@media (max-width: 640px) {
    .top-bar {
        padding: var(--space-4);
    }

    .title-section h1 {
        font-size: var(--text-lg);
    }

    .app-header-group {
        flex-direction: column;
        align-items: flex-start;
        gap: var(--space-3);
    }

    .app-nav {
        flex-wrap: wrap;
    }

    .actions {
        flex-wrap: wrap;
        gap: var(--space-2);
    }

    .right-panel {
        padding: var(--space-4) var(--space-3);
    }

    .clock-container {
        max-width: 100%;
        padding-bottom: var(--space-8);
    }

    .clock-settings {
        flex-direction: column;
        align-items: flex-start;
        gap: var(--space-4);
    }

    #clock-canvas {
        max-width: 100%;
    }
}

/* ============================================
   PROJECT PERSISTENCE UI
   ============================================ */

/* Save indicator */
.save-indicator {
    font-size: var(--text-sm);
    color: var(--success);
    opacity: 0;
    transition: opacity 0.3s;
    font-weight: 500;
}

.save-indicator.visible {
    opacity: 1;
}

/* Project dropdown */
.project-dropdown {
    position: relative;
}

.project-menu {
    position: absolute;
    top: calc(100% + var(--space-2));
    right: 0;
    background: var(--bg-primary);
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-lg);
    min-width: 220px;
    z-index: 1000;
    overflow: hidden;
}

.project-menu.hidden {
    display: none;
}

.project-menu-item {
    display: block;
    width: 100%;
    padding: var(--space-3) var(--space-4);
    background: none;
    border: none;
    text-align: left;
    font-family: inherit;
    font-size: var(--text-base);
    color: var(--ink);
    cursor: pointer;
    transition: background 0.2s;
}

.project-menu-item:hover {
    background: var(--bg-tertiary);
}

.project-menu-item.danger {
    color: var(--danger);
}

.project-menu-item.danger:hover {
    background: var(--danger-light);
}

.menu-divider {
    margin: 0;
    border: none;
    border-top: 1px solid var(--border);
}

/* Modal sizes */
.modal-content.modal-small {
    max-width: 450px;
}

.modal-content.modal-large {
    max-width: 700px;
}

/* Modal input */
.modal-input {
    width: 100%;
    padding: var(--space-3);
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    font-family: inherit;
    font-size: var(--text-base);
    transition: all 0.2s;
}

.modal-input:focus {
    outline: none;
    border-color: var(--accent);
    box-shadow: 0 0 0 3px var(--accent-light);
}

/* Modal actions */
.modal-actions {
    display: flex;
    gap: var(--space-3);
    justify-content: flex-end;
    margin-top: var(--space-6);
}

/* Projects list */
.projects-list {
    max-height: 400px;
    overflow-y: auto;
    margin: var(--space-4) 0;
}

.project-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--space-4);
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    margin-bottom: var(--space-3);
    background: var(--bg-primary);
    transition: all 0.2s;
}

.project-item:hover {
    border-color: var(--accent);
    box-shadow: var(--shadow-sm);
}

.project-item.current {
    background: var(--accent-light);
    border-color: var(--accent);
}

.project-info {
    flex: 1;
}

.project-info h4 {
    font-size: var(--text-base);
    font-weight: 600;
    color: var(--ink);
    margin-bottom: var(--space-1);
}

.current-badge {
    font-size: var(--text-sm);
    color: var(--accent);
    font-weight: 500;
}

.project-meta {
    font-size: var(--text-sm);
    color: var(--ink-muted);
}

.project-actions {
    display: flex;
    gap: var(--space-2);
}

.btn-sm {
    padding: var(--space-1) var(--space-3);
    font-size: var(--text-sm);
}

/* Empty state in projects list */
.projects-list .empty-state {
    text-align: center;
    padding: var(--space-8);
    color: var(--ink-muted);
}

.projects-list .empty-state p {
    margin: 0;
}

/* ============================================
   COLLAPSIBLE SECTIONS
   ============================================ */
.collapsible-section {
    border-bottom: 1px solid var(--border);
}

.collapsible-header {
    cursor: pointer;
    user-select: none;
    transition: background 0.2s;
    padding: var(--space-4) var(--space-5);
    display: flex;
    justify-content: space-between;
    align-items: center;
    background: var(--bg-primary);
}

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

.collapsible-header h3 {
    font-size: var(--text-sm);
    font-weight: 600;
    color: var(--ink-muted);
    letter-spacing: var(--tracking-wider);
    margin: 0;
    text-transform: uppercase;
}

.collapse-icon {
    font-size: var(--text-sm);
    color: var(--ink-subtle);
    transition: transform 0.3s ease;
    display: inline-block;
}

.collapsible-header.collapsed .collapse-icon {
    transform: rotate(-90deg);
}

.section-content {
    max-height: 1000px;
    overflow: hidden;
    transition: max-height 0.3s ease, opacity 0.3s ease;
    opacity: 1;
}

.section-content.collapsed {
    max-height: 0;
    opacity: 0;
}

/* Adjust clock settings when in left panel */
.collapsible-section .clock-settings {
    border: none;
    border-radius: 0;
    box-shadow: none;
    background: var(--bg-secondary);
    padding: var(--space-4);
    gap: var(--space-4);
    flex-direction: column;
    align-items: flex-start;
}

.collapsible-section .clock-settings label {
    width: 100%;
    justify-content: space-between;
}

.collapsible-section .clock-settings input[type="number"] {
    width: 100px;
}

/* ============================================
   PANEL RESIZE
   ============================================ */
.panel-resize-handle {
    position: absolute;
    top: 0;
    right: 0;
    width: 4px;
    height: 100%;
    cursor: ew-resize;
    background: transparent;
    transition: background 0.2s;
    z-index: 5;
}

.panel-resize-handle:hover {
    background: var(--accent);
}

.panel-resize-handle.resizing {
    background: var(--accent);
}