/* ============================================
   Image Annotation Tool - Styling
   Dark mode support with light mode default
   ============================================ */

/* CSS Variables - Light Mode (Default) */
:root {
    --transition-speed: 0.25s;
    
    /* Primary Colors - Using ConvertICO palette */
    --primary: #3399cc;
    --primary-light: #e0f2fe;
    --primary-dark: #2980b9;
    --accent: #60a5fa;
    
    /* Brand Colors */
    --color-red: #e64e4e;
    --color-blue: #3399cc;
    --color-green: #339966;
    --color-orange: #f59e0b;
    --color-purple: #8b5cf6;
    
    /* Status Colors */
    --success: #339966;
    --success-light: #d1fae5;
    --warning: #f59e0b;
    --warning-light: #fef3c7;
    --danger: #e64e4e;
    --danger-light: #fee2e2;
    
    /* Background Colors */
    --bg: #f8fafc;
    --bg-elevated: #ffffff;
    --bg-secondary: #f1f5f9;
    --bg-tertiary: #e2e8f0;
    
    /* Text Colors */
    --text: #1e293b;
    --text-secondary: #475569;
    --text-muted: #64748b;
    
    /* Border Colors */
    --border: #e2e8f0;
    --border-light: #f1f5f9;
    
    /* Shadows */
    --shadow-sm: 0 1px 3px rgba(0,0,0,0.08);
    --shadow-md: 0 4px 6px -1px rgba(0,0,0,0.1);
    --shadow-lg: 0 10px 15px -3px rgba(0,0,0,0.1);
    --shadow-xl: 0 20px 25px -5px rgba(0,0,0,0.1);
    --shadow-primary: 0 4px 14px rgba(51, 153, 204, 0.25);
    --shadow-primary-hover: 0 6px 20px rgba(51, 153, 204, 0.35);
    
    /* Radius */
    --radius-sm: 6px;
    --radius-md: 12px;
    --radius-lg: 16px;
    --radius-xl: 24px;
    --radius-full: 9999px;
    
    /* Checkerboard for transparency */
    --checker-light: #f0f0f0;
    --checker-dark: #e0e0e0;
    
    /* Input */
    --input-bg: #ffffff;
    --input-border: #e2e8f0;
    
    /* Canvas */
    --canvas-bg: #e5e7eb;
    
    /* Scrollbar */
    --scrollbar-track: var(--bg);
    --scrollbar-thumb: var(--text-muted);
    --scrollbar-thumb-hover: var(--text-secondary);
}

/* Dark Mode Colors */
[data-theme="dark"] {
    --primary: #60a5fa;
    --primary-light: rgba(96, 165, 250, 0.15);
    --primary-dark: #3b82f6;
    --accent: #93c5fd;
    
    /* Brand Colors (slightly adjusted for dark mode) */
    --color-red: #f87171;
    --color-blue: #60a5fa;
    --color-green: #4ade80;
    --color-orange: #fbbf24;
    --color-purple: #a78bfa;
    
    /* Status Colors */
    --success: #4ade80;
    --success-light: rgba(74, 222, 128, 0.15);
    --warning: #fbbf24;
    --warning-light: rgba(251, 191, 36, 0.15);
    --danger: #f87171;
    --danger-light: rgba(248, 113, 113, 0.15);
    
    /* Background Colors */
    --bg: #0f172a;
    --bg-elevated: #1e293b;
    --bg-secondary: #334155;
    --bg-tertiary: #475569;
    
    /* Text Colors */
    --text: #f1f5f9;
    --text-secondary: #cbd5e1;
    --text-muted: #94a3b8;
    
    /* Border Colors */
    --border: #334155;
    --border-light: #475569;
    
    /* Shadows */
    --shadow-sm: 0 1px 3px rgba(0,0,0,0.3);
    --shadow-md: 0 4px 6px -1px rgba(0,0,0,0.4);
    --shadow-lg: 0 10px 15px -3px rgba(0,0,0,0.4);
    --shadow-xl: 0 20px 25px -5px rgba(0,0,0,0.5);
    --shadow-primary: 0 4px 14px rgba(96, 165, 250, 0.2);
    --shadow-primary-hover: 0 6px 20px rgba(96, 165, 250, 0.3);
    
    /* Checkerboard for transparency */
    --checker-light: #334155;
    --checker-dark: #475569;
    
    /* Input */
    --input-bg: #334155;
    --input-border: #475569;
    
    /* Canvas */
    --canvas-bg: #1e293b;
    
    /* Scrollbar */
    --scrollbar-track: var(--bg-elevated);
    --scrollbar-thumb: var(--text-muted);
    --scrollbar-thumb-hover: var(--text-secondary);
}

/* Base Styles */
* {
    box-sizing: border-box;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    background: var(--bg);
    color: var(--text);
    line-height: 1.6;
    margin: 0;
    padding: 0;
    transition: background-color var(--transition-speed), color var(--transition-speed);
}

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

/* Header */
.tool-header {
    text-align: center;
    margin-bottom: 2rem;
}

.tool-title-row {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 1rem;
    margin-bottom: 1rem;
}

.tool-icon-wrapper {
    width: 64px;
    height: 64px;
    background: var(--primary);
    border-radius: var(--radius-lg);
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    box-shadow: var(--shadow-primary);
    flex-shrink: 0;
    transition: background-color var(--transition-speed), box-shadow var(--transition-speed);
}

.tool-icon-wrapper svg,
.tool-icon-wrapper i {
    width: 28px;
    height: 28px;
}

.tool-title {
    font-size: clamp(1.75rem, 4vw, 2.5rem);
    font-weight: 700;
    margin: 0;
    color: var(--primary);
    letter-spacing: -0.02em;
}

.tool-description {
    font-size: 1.1rem;
    color: var(--text-secondary);
    max-width: 800px;
    margin: 0 auto;
    line-height: 1.7;
}

/* Main Tool Area */
.tool-main {
    background: var(--bg-elevated);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-xl);
    overflow: hidden;
    border: 1px solid var(--border);
    margin-bottom: 2rem;
    transition: background-color var(--transition-speed), border-color var(--transition-speed), box-shadow var(--transition-speed);
}

/* Upload Section */
.upload-section {
    padding: 3rem;
}

/* Hidden file input */
.upload-area input[type="file"] {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border: 0;
}

.upload-area {
    border: 2px dashed var(--border);
    border-radius: var(--radius-lg);
    padding: 4rem 2rem;
    text-align: center;
    cursor: pointer;
    transition: all 0.3s ease;
    background: var(--bg-secondary);
    position: relative;
    overflow: hidden;
}

.upload-area::before {
    content: '';
    position: absolute;
    inset: 0;
    background: var(--primary-light);
    opacity: 0;
    transition: opacity 0.3s ease;
    pointer-events: none;
}

.upload-area:hover,
.upload-area.drag-over {
    border-color: var(--primary);
    background: var(--bg);
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.upload-area:hover::before,
.upload-area.drag-over::before {
    opacity: 0.5;
}

.upload-content {
    position: relative;
    z-index: 1;
}

.upload-icon {
    color: var(--primary);
    margin-bottom: 1.5rem;
    transition: transform 0.3s ease;
}

.upload-area:hover .upload-icon {
    transform: translateY(-5px);
}

.upload-title {
    font-size: 1.5rem;
    font-weight: 600;
    color: var(--text);
    margin: 0 0 0.5rem;
}

.upload-subtitle {
    color: var(--text-secondary);
    margin: 0 0 1rem;
    font-size: 1rem;
}

.file-types {
    display: flex;
    gap: 0.5rem;
    justify-content: center;
    flex-wrap: wrap;
    margin-bottom: 1rem;
}

.file-type-badge {
    background: var(--primary-light);
    color: var(--primary);
    padding: 0.35rem 0.85rem;
    border-radius: var(--radius-full);
    font-size: 0.8rem;
    font-weight: 600;
    transition: background-color var(--transition-speed), color var(--transition-speed);
}

.upload-hint {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    color: var(--text-muted);
    font-size: 0.875rem;
}

.upload-hint svg,
.upload-hint i {
    width: 14px;
    height: 14px;
    color: var(--color-green);
}

/* Paste Hint */
.paste-hint {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    margin-top: 1rem;
    padding: 0.75rem 1rem;
    background: var(--bg-secondary);
    border-radius: var(--radius-md);
    color: var(--text-muted);
    font-size: 0.875rem;
}

.paste-hint i {
    color: var(--primary);
}

.paste-hint kbd {
    background: var(--bg-tertiary);
    padding: 0.15rem 0.4rem;
    border-radius: 4px;
    font-family: monospace;
    font-size: 0.8rem;
    border: 1px solid var(--border);
}

/* Editor Section */
.editor-section {
    display: flex;
    flex-direction: column;
}

/* Toolbar */
.toolbar {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.75rem 1rem;
    background: var(--bg-secondary);
    border-bottom: 1px solid var(--border);
    flex-wrap: wrap;
    transition: background-color var(--transition-speed), border-color var(--transition-speed);
}

.toolbar-group {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.25rem;
}

.toolbar-group-label {
    font-size: 0.65rem;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    color: var(--text-muted);
    font-weight: 600;
}

.toolbar-buttons {
    display: flex;
    gap: 2px;
}

.tool-btn {
    width: 36px;
    height: 36px;
    border: none;
    background: transparent;
    border-radius: var(--radius-sm);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-secondary);
    transition: all 0.2s ease;
    padding: 0;
}

.tool-btn:hover {
    background: var(--bg-tertiary);
    color: var(--text);
}

.tool-btn.active {
    background: var(--primary);
    color: white;
    box-shadow: 0 2px 8px rgba(59, 130, 246, 0.4);
    transform: scale(1.02);
}

.tool-btn.active:hover {
    background: var(--primary-dark);
}

.tool-btn i,
.tool-btn svg {
    width: 18px;
    height: 18px;
}

.toolbar-divider {
    width: 1px;
    height: 40px;
    background: var(--border);
    margin: 0 0.5rem;
}

/* Options Bar */
.options-bar {
    display: flex;
    align-items: center;
    gap: 1.5rem;
    padding: 0.75rem 1rem;
    background: var(--bg-elevated);
    border-bottom: 1px solid var(--border);
    flex-wrap: wrap;
    transition: background-color var(--transition-speed), border-color var(--transition-speed);
}

.option-group {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.option-label {
    display: flex;
    align-items: center;
    gap: 0.35rem;
    font-size: 0.8rem;
    font-weight: 600;
    color: var(--text-muted);
    white-space: nowrap;
}

.option-label i,
.option-label svg {
    color: var(--primary);
}

/* Color Picker */
.color-picker-wrap {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.color-presets {
    display: flex;
    gap: 4px;
}

.color-preset {
    width: 24px;
    height: 24px;
    border-radius: var(--radius-sm);
    border: 2px solid transparent;
    cursor: pointer;
    transition: all 0.2s ease;
    padding: 0;
}

.color-preset:hover {
    transform: scale(1.1);
}

.color-preset.active {
    border-color: var(--text);
    box-shadow: 0 0 0 2px var(--bg-elevated);
}

.color-input {
    width: 28px;
    height: 28px;
    border: none;
    border-radius: var(--radius-sm);
    cursor: pointer;
    padding: 0;
    background: none;
}

.color-input::-webkit-color-swatch-wrapper {
    padding: 0;
}

.color-input::-webkit-color-swatch {
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
}

/* Stroke Options */
.stroke-options {
    display: flex;
    gap: 4px;
}

.stroke-btn {
    width: 32px;
    height: 28px;
    border: 1px solid var(--border);
    background: var(--bg-elevated);
    border-radius: var(--radius-sm);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 0;
    transition: all 0.2s ease;
}

.stroke-btn:hover {
    border-color: var(--primary);
}

.stroke-btn.active {
    background: var(--primary-light);
    border-color: var(--primary);
}

.stroke-preview {
    width: 16px;
    background: var(--text);
    border-radius: 2px;
}

.stroke-slider {
    width: 80px;
    height: 4px;
    border-radius: var(--radius-full);
    background: var(--border);
    -webkit-appearance: none;
    appearance: none;
    cursor: pointer;
}

.stroke-slider::-webkit-slider-thumb {
    -webkit-appearance: none;
    width: 14px;
    height: 14px;
    border-radius: 50%;
    background: var(--primary);
    cursor: pointer;
}

.stroke-value {
    font-size: 0.8rem;
    color: var(--text-muted);
    min-width: 30px;
}

/* Fill Toggle */
.fill-toggle {
    display: flex;
    gap: 2px;
    background: var(--bg-secondary);
    padding: 2px;
    border-radius: var(--radius-sm);
}

.fill-btn {
    width: 28px;
    height: 28px;
    border: none;
    background: transparent;
    border-radius: 4px;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-muted);
    padding: 0;
    transition: all 0.2s ease;
}

.fill-btn:hover {
    color: var(--text);
}

.fill-btn.active {
    background: var(--bg-elevated);
    color: var(--primary);
    box-shadow: var(--shadow-sm);
}

/* Font Options */
.option-select {
    padding: 0.4rem 0.6rem;
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    background: var(--bg-elevated);
    color: var(--text);
    font-size: 0.85rem;
    cursor: pointer;
    transition: border-color 0.2s ease;
}

.option-select:focus {
    outline: none;
    border-color: var(--primary);
}

.font-style-btns {
    display: flex;
    gap: 2px;
}

.font-style-btn {
    width: 28px;
    height: 28px;
    border: 1px solid var(--border);
    background: var(--bg-elevated);
    border-radius: var(--radius-sm);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-muted);
    padding: 0;
    transition: all 0.2s ease;
}

.font-style-btn:hover {
    border-color: var(--primary);
    color: var(--text);
}

.font-style-btn.active {
    background: var(--primary);
    border-color: var(--primary);
    color: white;
}

/* Intensity Slider */
.intensity-slider {
    width: 100px;
    height: 4px;
    border-radius: var(--radius-full);
    background: var(--border);
    -webkit-appearance: none;
    appearance: none;
    cursor: pointer;
}

.intensity-slider::-webkit-slider-thumb {
    -webkit-appearance: none;
    width: 14px;
    height: 14px;
    border-radius: 50%;
    background: var(--primary);
    cursor: pointer;
}

.intensity-value {
    font-size: 0.8rem;
    color: var(--text-muted);
    min-width: 20px;
}

/* Spacer */
.options-spacer {
    flex: 1;
}

/* Undo/Redo Group */
.undo-redo-group {
    display: flex;
    gap: 4px;
}

.action-btn {
    width: 32px;
    height: 32px;
    border: 1px solid var(--border);
    background: var(--bg-elevated);
    border-radius: var(--radius-sm);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-secondary);
    padding: 0;
    transition: all 0.2s ease;
}

.action-btn:hover:not(:disabled) {
    border-color: var(--primary);
    color: var(--primary);
}

.action-btn.active {
    background: var(--primary);
    border-color: var(--primary);
    color: white;
    box-shadow: 0 2px 8px rgba(59, 130, 246, 0.35);
}

.action-btn.active:hover {
    background: var(--primary-dark);
    border-color: var(--primary-dark);
    color: white;
}

.action-btn:disabled {
    opacity: 0.4;
    cursor: not-allowed;
}

/* Zoom Group */
.zoom-group {
    display: flex;
    align-items: center;
    gap: 4px;
}

.zoom-value {
    font-size: 0.8rem;
    color: var(--text-muted);
    min-width: 45px;
    text-align: center;
}

/* Canvas Container */
.canvas-container {
    position: relative;
    background: var(--canvas-bg);
    min-height: 400px;
    max-height: 70vh;
    overflow: auto;
    padding: 1rem;
    transition: background-color var(--transition-speed);
    display: flex;
    align-items: flex-start;
    justify-content: flex-start;
}

.canvas-container-inner {
    display: flex;
    align-items: center;
    justify-content: center;
    min-width: 100%;
    min-height: 100%;
}

.canvas-wrapper {
    position: relative;
    display: inline-block;
    box-shadow: var(--shadow-lg);
    transform-origin: center center;
    transition: transform 0.15s ease;
    flex-shrink: 0;
}

/* Straight Edge Indicator */
.straight-edge-indicator {
    position: absolute;
    top: 10px;
    right: 10px;
    display: flex;
    align-items: center;
    gap: 6px;
    padding: 6px 12px;
    background: rgba(51, 153, 102, 0.9);
    color: white;
    font-size: 12px;
    font-weight: 600;
    border-radius: 6px;
    z-index: 10;
    pointer-events: none;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.2);
}

[data-theme="dark"] .straight-edge-indicator {
    background: rgba(74, 222, 128, 0.9);
    color: #0f172a;
}

/* Selection Actions */
.selection-actions {
    display: flex;
    align-items: center;
    gap: 4px;
    animation: fadeIn 0.2s ease;
}

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

.action-btn-danger {
    color: var(--danger, #e64e4e);
}

.action-btn-danger:hover {
    background: var(--danger, #e64e4e);
    color: white;
}

/* Zoom controls */
.zoom-controls {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.5rem 1rem;
    background: var(--bg-secondary);
    border-radius: var(--radius-full);
    margin-left: auto;
}

.zoom-btn {
    width: 28px;
    height: 28px;
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    background: var(--bg-elevated);
    color: var(--text);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.2s ease;
    padding: 0;
}

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

.zoom-level {
    min-width: 50px;
    text-align: center;
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--text);
}

.zoom-fit-btn {
    padding: 0.25rem 0.75rem;
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    background: var(--bg-elevated);
    color: var(--text);
    font-size: 0.8rem;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.2s ease;
}

.zoom-fit-btn:hover {
    background: var(--primary);
    color: white;
    border-color: var(--primary);
}

.zoom-fit-btn.active {
    background: var(--primary);
    color: white;
    border-color: var(--primary);
}

#annotationCanvas {
    display: block;
    background: white;
    cursor: crosshair;
}

/* Text Input Overlay */
.text-input-overlay {
    position: absolute;
    background: transparent;
    border: 2px dashed var(--primary);
    outline: none;
    font-family: Arial, sans-serif;
    resize: none;
    overflow: hidden;
    min-width: 100px;
    min-height: 30px;
    padding: 4px;
    z-index: 10;
}

/* Note Input Overlay */
.note-input-overlay {
    position: absolute;
    width: 220px;
    background: #fef3c7;
    border-radius: var(--radius-md);
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.2);
    z-index: 20;
    overflow: hidden;
    border: 1px solid rgba(0, 0, 0, 0.1);
}

.note-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 8px 12px;
    background: #f59e0b;
    color: white;
}

.note-title {
    font-size: 0.85rem;
    font-weight: 600;
}

.note-header-actions {
    display: flex;
    gap: 4px;
}

.note-done-btn,
.note-cancel-btn {
    width: 24px;
    height: 24px;
    border: none;
    border-radius: var(--radius-sm);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 0;
    transition: all 0.2s ease;
}

.note-done-btn {
    background: rgba(255, 255, 255, 0.3);
    color: white;
}

.note-done-btn:hover {
    background: rgba(255, 255, 255, 0.5);
}

.note-cancel-btn {
    background: rgba(0, 0, 0, 0.1);
    color: white;
}

.note-cancel-btn:hover {
    background: rgba(0, 0, 0, 0.2);
}

.note-textarea {
    width: 100%;
    min-height: 100px;
    padding: 12px;
    border: none;
    background: transparent;
    font-size: 0.9rem;
    font-family: inherit;
    resize: none;
    outline: none;
    color: #1e293b;
}

.note-textarea::placeholder {
    color: #94a3b8;
}

/* Note Color Presets */
.note-color-presets {
    display: flex;
    gap: 6px;
}

.note-color-preset {
    width: 28px;
    height: 28px;
    border-radius: var(--radius-sm);
    border: 2px solid transparent;
    cursor: pointer;
    transition: all 0.2s ease;
    padding: 0;
}

.note-color-preset:hover {
    transform: scale(1.1);
}

.note-color-preset.active {
    border-color: var(--primary);
    box-shadow: 0 0 0 2px var(--primary-light);
}

/* Note colors for different themes */
.note-input-overlay[data-note-color="yellow"] {
    background: #fef3c7;
}
.note-input-overlay[data-note-color="yellow"] .note-header {
    background: #f59e0b;
}

.note-input-overlay[data-note-color="blue"] {
    background: #dbeafe;
}
.note-input-overlay[data-note-color="blue"] .note-header {
    background: #3b82f6;
}

.note-input-overlay[data-note-color="green"] {
    background: #d1fae5;
}
.note-input-overlay[data-note-color="green"] .note-header {
    background: #10b981;
}

.note-input-overlay[data-note-color="pink"] {
    background: #fce7f3;
}
.note-input-overlay[data-note-color="pink"] .note-header {
    background: #ec4899;
}

.note-input-overlay[data-note-color="orange"] {
    background: #ffedd5;
}
.note-input-overlay[data-note-color="orange"] .note-header {
    background: #f97316;
}

.note-input-overlay[data-note-color="purple"] {
    background: #ede9fe;
}
.note-input-overlay[data-note-color="purple"] .note-header {
    background: #8b5cf6;
}

/* Action Bar */
.action-bar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1rem 1.5rem;
    background: var(--bg-secondary);
    border-top: 1px solid var(--border);
    transition: background-color var(--transition-speed), border-color var(--transition-speed);
}

.action-left,
.action-right {
    display: flex;
    gap: 0.75rem;
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    padding: 0.75rem 1.25rem;
    border-radius: var(--radius-full);
    font-size: 0.95rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.2s ease;
    text-decoration: none;
    border: none;
}

.btn svg,
.btn i {
    width: 18px;
    height: 18px;
}

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

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

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

.btn-secondary:hover {
    background: var(--bg);
    border-color: var(--text-muted);
}

/* Download Dropdown */
.download-dropdown {
    position: relative;
}

.download-menu {
    position: absolute;
    bottom: 100%;
    right: 0;
    margin-bottom: 8px;
    background: var(--bg-elevated);
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-lg);
    display: none;
    min-width: 180px;
    z-index: 100;
    overflow: hidden;
}

.download-dropdown.open .download-menu {
    display: block;
}

.download-option {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    width: 100%;
    padding: 0.75rem 1rem;
    border: none;
    background: transparent;
    color: var(--text);
    font-size: 0.9rem;
    cursor: pointer;
    transition: background-color 0.2s ease;
    text-align: left;
}

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

.download-option i {
    color: var(--primary);
}

/* Error Message */
.error-message {
    background: var(--danger-light);
    border: 1px solid var(--danger);
    color: var(--danger);
    padding: 1rem 1.25rem;
    border-radius: var(--radius-md);
    margin: 1.25rem;
    font-weight: 500;
    transition: background-color var(--transition-speed), border-color var(--transition-speed);
}

/* Related Tools */
.related-tools {
    display: flex;
    align-items: center;
    flex-wrap: wrap;
    gap: 1rem;
    padding: 1.25rem 1.5rem;
    background: var(--bg-elevated);
    border-radius: var(--radius-lg);
    margin-bottom: 2rem;
    border: 1px solid var(--border);
    box-shadow: var(--shadow-sm);
    transition: background-color var(--transition-speed), border-color var(--transition-speed);
}

.related-label {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-weight: 600;
    color: var(--text);
    font-size: 0.9rem;
}

.related-label svg,
.related-label i {
    color: var(--primary);
    width: 16px;
    height: 16px;
}

.related-links {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
}

.related-link {
    display: inline-flex;
    align-items: center;
    gap: 0.4rem;
    padding: 0.5rem 1rem;
    background: var(--bg-secondary);
    border-radius: var(--radius-full);
    color: var(--text-secondary);
    text-decoration: none;
    font-size: 0.875rem;
    font-weight: 500;
    transition: all 0.2s ease;
    border: 1px solid var(--border);
}

.related-link:hover {
    background: var(--primary);
    color: white;
    border-color: var(--primary);
    transform: translateY(-2px);
}

.related-link svg,
.related-link i {
    width: 16px;
    height: 16px;
}

/* Info Sections */
.info-sections {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.info-card {
    background: var(--bg-elevated);
    border-radius: var(--radius-xl);
    padding: 2rem;
    box-shadow: var(--shadow-md);
    border: 1px solid var(--border);
    transition: background-color var(--transition-speed), border-color var(--transition-speed);
}

.info-card h2 {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    font-size: 1.3rem;
    color: var(--text);
    margin: 0 0 1.5rem 0;
}

.info-card h2 svg,
.info-card h2 i {
    color: var(--primary);
    width: 24px;
    height: 24px;
}

/* Steps List */
.steps-list {
    counter-reset: step;
    list-style: none;
    padding: 0;
    margin: 0;
}

.steps-list li {
    position: relative;
    padding-left: 3.25rem;
    margin-bottom: 1rem;
    counter-increment: step;
    color: var(--text-secondary);
    line-height: 1.6;
}

.steps-list li:not(:last-child)::after {
    content: '';
    position: absolute;
    left: calc(1rem - 1px);
    top: 2rem;
    bottom: 0;
    width: 2px;
    background: var(--primary-light);
}

.steps-list li::before {
    content: counter(step);
    position: absolute;
    left: 0;
    top: 0;
    width: 2rem;
    height: 2rem;
    background: var(--primary);
    color: white;
    border-radius: var(--radius-full);
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 600;
    font-size: 0.875rem;
    z-index: 1;
}

.steps-list li:last-child {
    margin-bottom: 0;
}

.steps-list li a {
    color: var(--primary);
    text-decoration: none;
}

.steps-list li a:hover {
    text-decoration: underline;
}

.steps-list kbd {
    background: var(--bg-tertiary);
    padding: 0.15rem 0.4rem;
    border-radius: 4px;
    font-family: monospace;
    font-size: 0.8rem;
    border: 1px solid var(--border);
}

/* Steps Tip */
.steps-tip {
    display: flex;
    align-items: flex-start;
    gap: 0.75rem;
    margin-top: 1.5rem;
    padding: 1rem 1.25rem;
    background: var(--warning-light);
    border-radius: var(--radius-md);
    font-size: 0.9rem;
    color: var(--text-secondary);
    line-height: 1.6;
}

.steps-tip i,
.steps-tip svg {
    color: var(--warning);
    flex-shrink: 0;
    margin-top: 2px;
    width: 18px;
    height: 18px;
}

.steps-tip a {
    color: var(--color-orange);
    font-weight: 600;
    text-decoration: none;
}

.steps-tip a:hover {
    text-decoration: underline;
}

/* Tools Grid */
.tools-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 1.25rem;
}

.tool-explain {
    display: flex;
    gap: 1rem;
    align-items: flex-start;
}

.tool-icon-small {
    width: 44px;
    height: 44px;
    background: var(--primary-light);
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--primary);
    flex-shrink: 0;
    transition: background-color var(--transition-speed);
}

.tool-info h4 {
    margin: 0 0 0.25rem;
    font-size: 1rem;
    color: var(--text);
}

.tool-info p {
    margin: 0;
    font-size: 0.9rem;
    color: var(--text-secondary);
    line-height: 1.5;
}

/* Use Cases Grid */
.use-cases-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
    gap: 1rem;
}

.use-case {
    padding: 1rem;
    background: var(--bg-secondary);
    border-radius: var(--radius-md);
    transition: background-color var(--transition-speed);
}

.use-case-tag {
    display: inline-block;
    padding: 0.25rem 0.75rem;
    border-radius: var(--radius-full);
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
    margin-bottom: 0.5rem;
}

.use-case-tag.dev {
    background: var(--color-purple);
    color: white;
}

.use-case-tag.design {
    background: var(--color-blue);
    color: white;
}

.use-case-tag.edu {
    background: var(--color-green);
    color: white;
}

.use-case-tag.support {
    background: var(--color-orange);
    color: white;
}

.use-case p {
    margin: 0;
    font-size: 0.9rem;
    color: var(--text-secondary);
    line-height: 1.5;
}

/* FAQ */
.faq-list {
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
}

.faq-item {
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    overflow: hidden;
    transition: border-color var(--transition-speed);
}

.faq-question {
    width: 100%;
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1rem 1.25rem;
    background: var(--bg-secondary);
    border: none;
    cursor: pointer;
    font-size: 1rem;
    font-weight: 500;
    color: var(--text);
    text-align: left;
    transition: all 0.2s ease;
}

.faq-question:hover {
    background: var(--bg-tertiary);
}

.faq-question svg,
.faq-question i {
    flex-shrink: 0;
    color: var(--primary);
    width: 20px;
    height: 20px;
    transition: transform 0.3s ease;
}

.faq-item.active .faq-question svg,
.faq-item.active .faq-question i {
    transform: rotate(180deg);
}

.faq-answer {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.3s ease;
}

.faq-item.active .faq-answer {
    max-height: 300px;
}

.faq-answer p {
    padding: 1rem 1.25rem;
    margin: 0;
    color: var(--text-secondary);
    line-height: 1.7;
    border-top: 1px solid var(--border);
    background: var(--bg-elevated);
    transition: background-color var(--transition-speed), border-color var(--transition-speed);
}

.faq-answer a {
    color: var(--primary);
    text-decoration: none;
}

.faq-answer a:hover {
    text-decoration: underline;
}

/* Responsive */
@media (max-width: 900px) {
    .toolbar {
        justify-content: center;
    }
    
    .toolbar-group-label {
        display: none;
    }
    
    .options-bar {
        gap: 1rem;
    }
    
    .option-group {
        flex-wrap: wrap;
    }
}

@media (max-width: 768px) {
    .tool-container {
        padding: 1rem;
    }
    
    .tool-title-row {
        gap: 0.75rem;
    }
    
    .tool-icon-wrapper {
        width: 50px;
        height: 50px;
    }
    
    .tool-icon-wrapper svg,
    .tool-icon-wrapper i {
        width: 24px;
        height: 24px;
    }
    
    .upload-section {
        padding: 2rem 1.5rem;
    }
    
    .upload-area {
        padding: 2.5rem 1.5rem;
    }
    
    .toolbar {
        padding: 0.5rem;
    }
    
    .toolbar-divider {
        display: none;
    }
    
    .tool-btn {
        width: 40px;
        height: 40px;
    }
    
    .options-bar {
        padding: 0.75rem;
        gap: 0.75rem;
    }
    
    .option-label {
        display: none;
    }
    
    .stroke-slider,
    .intensity-slider {
        width: 60px;
    }
    
    .action-bar {
        flex-direction: column;
        gap: 1rem;
        padding: 1rem;
    }
    
    .action-left,
    .action-right {
        width: 100%;
        justify-content: center;
    }
    
    .btn {
        flex: 1;
        max-width: 150px;
    }
    
    .related-tools {
        flex-direction: column;
        align-items: flex-start;
    }
    
    .tools-grid {
        grid-template-columns: 1fr;
    }
    
    .use-cases-grid {
        grid-template-columns: 1fr;
    }
    
    .info-card {
        padding: 1.5rem;
    }
    
    .canvas-container {
        min-height: 300px;
    }
}

@media (max-width: 480px) {
    .tool-title-row {
        flex-direction: column;
        gap: 0.75rem;
    }
    
    .color-presets {
        flex-wrap: wrap;
        gap: 6px;
    }
    
    .zoom-group {
        display: none;
    }
    
    .paste-hint {
        flex-direction: column;
        text-align: center;
    }
}

/* Scrollbar Styling */
::-webkit-scrollbar {
    width: 8px;
    height: 8px;
}

::-webkit-scrollbar-track {
    background: var(--scrollbar-track);
    border-radius: 4px;
}

::-webkit-scrollbar-thumb {
    background: var(--scrollbar-thumb);
    border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
    background: var(--scrollbar-thumb-hover);
}

/* Selection */
::selection {
    background: rgba(51, 153, 204, 0.2);
    color: var(--text);
}

[data-theme="dark"] ::selection {
    background: rgba(96, 165, 250, 0.3);
}

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

.editor-section {
    animation: fadeIn 0.4s ease;
}

/* Reduced Motion */
@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        transition-duration: 0.01ms !important;
    }
}

/* Cursor styles for different tools */
.canvas-wrapper[data-tool="select"] #annotationCanvas { cursor: default; }
.canvas-wrapper[data-tool="pen"] #annotationCanvas { cursor: crosshair; }
.canvas-wrapper[data-tool="marker"] #annotationCanvas { cursor: crosshair; }
.canvas-wrapper[data-tool="highlighter"] #annotationCanvas { cursor: crosshair; }
.canvas-wrapper[data-tool="arrow"] #annotationCanvas { cursor: crosshair; }
.canvas-wrapper[data-tool="line"] #annotationCanvas { cursor: crosshair; }
.canvas-wrapper[data-tool="rectangle"] #annotationCanvas { cursor: crosshair; }
.canvas-wrapper[data-tool="ellipse"] #annotationCanvas { cursor: crosshair; }
.canvas-wrapper[data-tool="text"] #annotationCanvas { cursor: text; }
.canvas-wrapper[data-tool="number"] #annotationCanvas { cursor: crosshair; }
.canvas-wrapper[data-tool="callout"] #annotationCanvas { cursor: crosshair; }
.canvas-wrapper[data-tool="note"] #annotationCanvas { cursor: crosshair; }
.canvas-wrapper[data-tool="blur"] #annotationCanvas { cursor: crosshair; }
.canvas-wrapper[data-tool="pixelate"] #annotationCanvas { cursor: crosshair; }
.canvas-wrapper[data-tool="spotlight"] #annotationCanvas { cursor: crosshair; }
.canvas-wrapper[data-tool="crop"] #annotationCanvas { cursor: crosshair; }
.canvas-wrapper[data-tool="eraser"] #annotationCanvas { cursor: cell; }

/* ============================================
   OBJECT SELECTION SYSTEM CURSORS
   ============================================ */

/* Move cursor when hovering selected object */
.canvas-wrapper.cursor-move #annotationCanvas { cursor: move !important; }

/* Resize handle cursors */
.canvas-wrapper.cursor-nw-resize #annotationCanvas { cursor: nw-resize !important; }
.canvas-wrapper.cursor-ne-resize #annotationCanvas { cursor: ne-resize !important; }
.canvas-wrapper.cursor-sw-resize #annotationCanvas { cursor: sw-resize !important; }
.canvas-wrapper.cursor-se-resize #annotationCanvas { cursor: se-resize !important; }
.canvas-wrapper.cursor-n-resize #annotationCanvas { cursor: n-resize !important; }
.canvas-wrapper.cursor-s-resize #annotationCanvas { cursor: s-resize !important; }
.canvas-wrapper.cursor-e-resize #annotationCanvas { cursor: e-resize !important; }
.canvas-wrapper.cursor-w-resize #annotationCanvas { cursor: w-resize !important; }

/* Pointer cursor for clickable objects */
.canvas-wrapper.cursor-pointer #annotationCanvas { cursor: pointer !important; }

/* Text edit cursor */
.canvas-wrapper.cursor-text #annotationCanvas { cursor: text !important; }

/* Grabbing cursor during drag */
.canvas-wrapper.cursor-grabbing #annotationCanvas { cursor: grabbing !important; }

/* Selection indicator badge */
.selection-info {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.25rem 0.75rem;
    background: var(--primary-light);
    color: var(--primary);
    border-radius: var(--radius-full);
    font-size: 0.8rem;
    font-weight: 600;
}

.selection-info i {
    width: 14px;
    height: 14px;
}