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

:root {
    --bg-primary: #1e1e2e;
    --bg-secondary: #2a2a3e;
    --bg-tertiary: #33334d;
    --text-primary: #e0e0e0;
    --text-secondary: #a0a0b0;
    --accent: #7c8ef5;
    --accent-hover: #9aa6f7;
    --border: #3a3a5a;
    --unannotated-stroke: #cccccc;
    --canvas-bg: #ffffff;
    --danger: #e74c3c;
    --success: #2ecc71;
}

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

#app {
    display: flex;
    flex-direction: column;
    height: 100vh;
}

/* Toolbar */
#toolbar {
    display: flex;
    align-items: center;
    gap: 16px;
    padding: 8px 16px;
    background: var(--bg-secondary);
    border-bottom: 1px solid var(--border);
    flex-shrink: 0;
}

.toolbar-group {
    display: flex;
    align-items: center;
    gap: 6px;
}

.toolbar-label {
    font-size: 12px;
    color: var(--text-secondary);
}

button {
    padding: 6px 12px;
    border: 1px solid var(--border);
    border-radius: 4px;
    background: var(--bg-tertiary);
    color: var(--text-primary);
    cursor: pointer;
    font-size: 13px;
    white-space: nowrap;
}

button:hover {
    background: var(--accent);
    border-color: var(--accent);
}

button:active {
    transform: scale(0.97);
}

.tool-btn.active {
    background: var(--accent);
    border-color: var(--accent);
}

.file-name {
    font-size: 12px;
    color: var(--text-secondary);
    max-width: 200px;
    overflow: hidden;
    text-overflow: ellipsis;
}

#zoom-level {
    font-size: 12px;
    min-width: 40px;
    text-align: center;
    color: var(--text-secondary);
}

/* Main content */
#main-content {
    display: flex;
    flex: 1;
    overflow: hidden;
}

/* Sidebars */
aside {
    width: 260px;
    flex-shrink: 0;
    background: var(--bg-secondary);
    border-right: 1px solid var(--border);
    overflow-y: auto;
    padding: 12px;
}

#sidebar-right {
    border-right: none;
    border-left: 1px solid var(--border);
}

aside h3 {
    font-size: 13px;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    color: var(--text-secondary);
    margin-bottom: 8px;
    padding-bottom: 4px;
    border-bottom: 1px solid var(--border);
}

aside section {
    margin-bottom: 16px;
}

/* Class list */
.class-item {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 6px 8px;
    border-radius: 4px;
    cursor: pointer;
    margin-bottom: 2px;
    font-size: 13px;
}

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

.class-item.active {
    background: var(--bg-tertiary);
    outline: 2px solid var(--accent);
}

.class-swatch {
    width: 14px;
    height: 14px;
    border-radius: 3px;
    flex-shrink: 0;
}

.class-name {
    flex: 1;
    overflow: hidden;
    text-overflow: ellipsis;
}

.class-count {
    font-size: 11px;
    color: var(--text-secondary);
}

/* Global progress badge */
.global-progress {
    font-size: 12px;
    color: var(--text-secondary);
    padding: 4px 8px;
    border-radius: 4px;
    background: var(--bg-tertiary);
    border: 1px solid var(--border);
    white-space: nowrap;
}

.global-progress.complete {
    color: var(--success);
    border-color: var(--success);
}

/* Annotator ID input */
.annotator-group #annotator-id-input {
    width: 140px;
}

/* Active class section */
#active-class-display {
    padding: 8px;
    background: var(--bg-tertiary);
    border-radius: 4px;
    margin-bottom: 8px;
    font-size: 13px;
}

#active-class-name {
    font-weight: 600;
}

/* Text transcription input */
#text-input-section label {
    display: block;
    font-size: 12px;
    color: var(--text-secondary);
    margin-bottom: 4px;
}

#text-input {
    width: 100%;
    margin-bottom: 6px;
}

/* Selection info */
#selection-count {
    font-size: 13px;
    margin-bottom: 8px;
    color: var(--text-secondary);
}

#selection-info button {
    width: 100%;
    margin-bottom: 4px;
}

/* Inputs */
input[type="text"] {
    padding: 6px 8px;
    border: 1px solid var(--border);
    border-radius: 4px;
    background: var(--bg-tertiary);
    color: var(--text-primary);
    font-size: 13px;
}

input[type="text"]:focus {
    outline: none;
    border-color: var(--accent);
}

/* Canvas */
#canvas-container {
    flex: 1;
    position: relative;
    overflow: hidden;
    background: #151525;
}

#canvas {
    position: absolute;
    top: 0;
    left: 0;
    cursor: crosshair;
}

/* Page nav */
#page-nav {
    position: absolute;
    bottom: 16px;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    align-items: center;
    gap: 12px;
    background: var(--bg-secondary);
    padding: 6px 16px;
    border-radius: 20px;
    border: 1px solid var(--border);
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.3);
}

#page-indicator {
    font-size: 13px;
    color: var(--text-secondary);
    min-width: 80px;
    text-align: center;
}

#page-nav button {
    padding: 4px 10px;
    border-radius: 12px;
}

/* Annotation list */
.annotation-item {
    display: flex;
    align-items: center;
    gap: 6px;
    padding: 6px 8px;
    border-radius: 4px;
    margin-bottom: 2px;
    font-size: 12px;
    cursor: pointer;
}

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

.annotation-item.highlighted {
    outline: 2px solid var(--accent);
    background: var(--bg-tertiary);
}

.annotation-swatch {
    width: 10px;
    height: 10px;
    border-radius: 2px;
    flex-shrink: 0;
}

.annotation-class {
    font-weight: 600;
    min-width: 50px;
}

.annotation-text {
    flex: 1;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
    color: var(--text-secondary);
    font-style: italic;
}

.annotation-text.editable {
    cursor: text;
    border-radius: 2px;
}

.annotation-text.editable:hover {
    background: var(--bg-primary);
    color: var(--text-primary);
}

.annotation-text-edit {
    flex: 1;
    min-width: 0;
    font-size: 12px;
    padding: 1px 4px;
    height: 20px;
    font-style: italic;
}

.annotation-strokes {
    font-size: 11px;
    color: var(--text-secondary);
}

.annotation-delete {
    opacity: 0;
    background: none;
    border: none;
    color: var(--danger);
    cursor: pointer;
    font-size: 13px;
    padding: 0 4px;
    line-height: 1;
}

.annotation-item:hover .annotation-delete {
    opacity: 1;
}

#annotation-stats {
    margin-top: 12px;
    padding-top: 8px;
    border-top: 1px solid var(--border);
    font-size: 12px;
    color: var(--text-secondary);
}

#annotation-stats p {
    margin-bottom: 4px;
}

/* Selection rectangle overlay */
.selection-rect {
    position: absolute;
    border: 2px dashed var(--accent);
    background: rgba(124, 142, 245, 0.1);
    pointer-events: none;
}

/* Hidden */
.hidden {
    display: none !important;
}

/* Scrollbar styling */
aside::-webkit-scrollbar {
    width: 6px;
}

aside::-webkit-scrollbar-track {
    background: transparent;
}

aside::-webkit-scrollbar-thumb {
    background: var(--border);
    border-radius: 3px;
}

/* Keyboard hints tooltip */
[title] {
    position: relative;
}