/* ========================================
   VectorX - Premium Dark Theme CSS
   ======================================== */

:root {
    /* Color Palette */
    --bg-primary: #0a0a0f;
    --bg-secondary: #12121a;
    --bg-tertiary: #1a1a25;
    --bg-glass: rgba(26, 26, 37, 0.85);

    --accent-primary: #6366f1;
    --accent-secondary: #818cf8;
    --accent-glow: rgba(99, 102, 241, 0.3);

    --success: #10b981;
    --warning: #f59e0b;
    --error: #ef4444;

    --text-primary: #f1f5f9;
    --text-secondary: #94a3b8;
    --text-muted: #64748b;

    --border-color: rgba(255, 255, 255, 0.08);
    --border-focus: rgba(99, 102, 241, 0.5);

    /* Spacing */
    --spacing-xs: 0.25rem;
    --spacing-sm: 0.5rem;
    --spacing-md: 1rem;
    --spacing-lg: 1.5rem;
    --spacing-xl: 2rem;

    /* Border Radius */
    --radius-sm: 0.375rem;
    --radius-md: 0.75rem;
    --radius-lg: 1rem;
    --radius-xl: 1.5rem;

    /* Transitions */
    --transition-fast: 150ms ease;
    --transition-normal: 250ms ease;
    --transition-slow: 350ms ease;

    /* Shadows */
    --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.3);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.3), 0 2px 4px -1px rgba(0, 0, 0, 0.2);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.3), 0 4px 6px -2px rgba(0, 0, 0, 0.2);
    --shadow-glow: 0 0 20px var(--accent-glow);
}

/* ========================================
   Base Styles
   ======================================== */

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

html {
    font-size: 16px;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    background: var(--bg-primary);
    color: var(--text-primary);
    min-height: 100vh;
    line-height: 1.5;
}

/* Background gradient */
body::before {
    content: '';
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background:
        radial-gradient(ellipse at 20% 20%, rgba(99, 102, 241, 0.15) 0%, transparent 50%),
        radial-gradient(ellipse at 80% 80%, rgba(139, 92, 246, 0.1) 0%, transparent 50%);
    pointer-events: none;
    z-index: -1;
}

/* ========================================
   Layout
   ======================================== */

.app-container {
    display: flex;
    flex-direction: column;
    min-height: 100vh;
    max-width: 1800px;
    margin: 0 auto;
    padding: var(--spacing-md);
}

/* ========================================
   Header
   ======================================== */

.header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--spacing-md) var(--spacing-lg);
    background: var(--bg-glass);
    backdrop-filter: blur(12px);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    margin-bottom: var(--spacing-lg);
}

.logo {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.logo-icon {
    width: 32px;
    height: 32px;
    color: var(--accent-primary);
}

.logo-text {
    font-size: 1.5rem;
    font-weight: 700;
    background: linear-gradient(135deg, var(--accent-primary), var(--accent-secondary));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.header-status {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-xs) var(--spacing-md);
    background: var(--bg-tertiary);
    border-radius: var(--radius-md);
    font-size: 0.875rem;
}

.status-dot {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background: var(--warning);
    animation: pulse 2s infinite;
}

.status-dot.ready {
    background: var(--success);
    animation: none;
}

.status-dot.error {
    background: var(--error);
    animation: none;
}

@keyframes pulse {

    0%,
    100% {
        opacity: 1;
    }

    50% {
        opacity: 0.5;
    }
}

.status-text {
    color: var(--text-secondary);
}

/* ========================================
   Main Content
   ======================================== */

.main-content {
    display: grid;
    grid-template-columns: 1fr 320px 1fr;
    gap: var(--spacing-lg);
    flex: 1;
}

@media (max-width: 1200px) {
    .main-content {
        grid-template-columns: 1fr;
    }
}

/* ========================================
   Panels
   ======================================== */

.panel {
    background: var(--bg-glass);
    backdrop-filter: blur(12px);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    padding: var(--spacing-lg);
    display: flex;
    flex-direction: column;
}

.panel-title {
    font-size: 1rem;
    font-weight: 600;
    color: var(--text-secondary);
    margin-bottom: var(--spacing-md);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

/* ========================================
   Upload Zone
   ======================================== */

.upload-zone {
    flex: 1;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    border: 2px dashed var(--border-color);
    border-radius: var(--radius-md);
    padding: var(--spacing-xl);
    cursor: pointer;
    transition: all var(--transition-normal);
    position: relative;
    min-height: 300px;
    overflow: hidden;
}

.upload-zone:hover {
    border-color: var(--accent-primary);
    background: rgba(99, 102, 241, 0.05);
}

.upload-zone.dragover {
    border-color: var(--accent-primary);
    background: rgba(99, 102, 241, 0.1);
    box-shadow: var(--shadow-glow);
}

.upload-placeholder {
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
}

.upload-icon {
    width: 64px;
    height: 64px;
    color: var(--text-muted);
    margin-bottom: var(--spacing-md);
}

.upload-text {
    font-size: 1rem;
    color: var(--text-secondary);
    margin-bottom: var(--spacing-xs);
}

.upload-hint {
    font-size: 0.875rem;
    color: var(--text-muted);
}

.preview-image {
    max-width: 100%;
    max-height: 100%;
    object-fit: contain;
    border-radius: var(--radius-sm);
}

.image-info {
    margin-top: var(--spacing-md);
    font-size: 0.875rem;
    color: var(--text-muted);
    text-align: center;
}

/* ========================================
   Controls Panel
   ======================================== */

.controls-panel {
    overflow-y: auto;
}

.control-group {
    margin-bottom: var(--spacing-lg);
}

.control-label {
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--text-primary);
    margin-bottom: var(--spacing-sm);
}

.control-value {
    color: var(--accent-secondary);
    font-weight: 600;
}

.control-hint {
    font-size: 0.75rem;
    color: var(--text-muted);
    margin-top: var(--spacing-xs);
}

/* Toggle Group */
.toggle-group {
    display: flex;
    background: var(--bg-tertiary);
    border-radius: var(--radius-sm);
    padding: 2px;
}

.toggle-btn {
    flex: 1;
    padding: var(--spacing-sm) var(--spacing-md);
    background: transparent;
    border: none;
    color: var(--text-secondary);
    font-size: 0.875rem;
    font-weight: 500;
    cursor: pointer;
    border-radius: var(--radius-sm);
    transition: all var(--transition-fast);
}

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

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

/* Slider */
.slider {
    width: 100%;
    height: 6px;
    background: var(--bg-tertiary);
    border-radius: 3px;
    outline: none;
    -webkit-appearance: none;
    appearance: none;
}

.slider::-webkit-slider-thumb {
    -webkit-appearance: none;
    appearance: none;
    width: 18px;
    height: 18px;
    background: var(--accent-primary);
    border-radius: 50%;
    cursor: pointer;
    box-shadow: var(--shadow-md);
    transition: transform var(--transition-fast);
}

.slider::-webkit-slider-thumb:hover {
    transform: scale(1.1);
}

.slider::-moz-range-thumb {
    width: 18px;
    height: 18px;
    background: var(--accent-primary);
    border: none;
    border-radius: 50%;
    cursor: pointer;
    box-shadow: var(--shadow-md);
}

/* Convert Button */
.convert-btn {
    width: 100%;
    padding: var(--spacing-md) var(--spacing-lg);
    background: linear-gradient(135deg, var(--accent-primary), var(--accent-secondary));
    border: none;
    border-radius: var(--radius-md);
    color: white;
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: all var(--transition-normal);
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-sm);
    margin-top: auto;
}

.convert-btn:hover:not(:disabled) {
    transform: translateY(-2px);
    box-shadow: var(--shadow-glow);
}

.convert-btn:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

.btn-loader {
    width: 20px;
    height: 20px;
    border: 2px solid rgba(255, 255, 255, 0.3);
    border-top-color: white;
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
}

@keyframes spin {
    to {
        transform: rotate(360deg);
    }
}

/* ========================================
   Result Zone
   ======================================== */

.result-zone {
    flex: 1;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--bg-tertiary);
    border-radius: var(--radius-md);
    min-height: 300px;
    max-height: 400px;
    overflow: hidden;
    position: relative;
}

.result-placeholder {
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
}

.result-icon {
    width: 64px;
    height: 64px;
    color: var(--text-muted);
    margin-bottom: var(--spacing-md);
}

.result-text {
    font-size: 1rem;
    color: var(--text-muted);
}

.svg-container {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: var(--spacing-md);
    overflow: hidden;
    /* 체커보드 배경 (투명 영역 표시용) */
    background-image:
        linear-gradient(45deg, #2a2a2a 25%, transparent 25%),
        linear-gradient(-45deg, #2a2a2a 25%, transparent 25%),
        linear-gradient(45deg, transparent 75%, #2a2a2a 75%),
        linear-gradient(-45deg, transparent 75%, #2a2a2a 75%);
    background-size: 20px 20px;
    background-position: 0 0, 0 10px, 10px -10px, -10px 0px;
    background-color: #1a1a1a;
}

.svg-container svg {
    max-width: calc(100% - 2rem);
    max-height: calc(100% - 2rem);
    width: auto !important;
    height: auto !important;
}

/* SVG 요소 하이라이트 (색상 위치 표시) */
.svg-container svg .color-highlight {
    stroke: #ff00ff !important;
    stroke-width: 3px !important;
    stroke-dasharray: 5, 3;
    animation: colorHighlightPulse 0.8s ease-in-out infinite;
    filter: drop-shadow(0 0 4px #ff00ff);
}

@keyframes colorHighlightPulse {

    0%,
    100% {
        opacity: 1;
        stroke-width: 3px;
    }

    50% {
        opacity: 0.6;
        stroke-width: 5px;
    }
}

.result-info {
    margin-top: var(--spacing-md);
    font-size: 0.875rem;
    color: var(--text-muted);
    text-align: center;
}

.result-actions {
    display: flex;
    gap: var(--spacing-sm);
    margin-top: var(--spacing-md);
}

.action-btn {
    flex: 1;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-sm) var(--spacing-md);
    border: none;
    border-radius: var(--radius-md);
    font-size: 0.875rem;
    font-weight: 500;
    cursor: pointer;
    transition: all var(--transition-fast);
}

.action-btn svg {
    width: 18px;
    height: 18px;
}

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

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

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

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

/* ========================================
   Footer
   ======================================== */

.footer {
    text-align: center;
    padding: var(--spacing-md);
    color: var(--text-muted);
    font-size: 0.875rem;
    margin-top: var(--spacing-lg);
}

.footer strong {
    color: var(--accent-secondary);
}

/* ========================================
   Utilities
   ======================================== */

.hidden {
    display: none !important;
}

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

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

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

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

/* ========================================
   Edit Tools Panel
   ======================================== */

.edit-tools-panel {
    position: fixed;
    right: 0;
    top: 0;
    width: 360px;
    height: 100vh;
    background: var(--bg-secondary);
    border-left: 1px solid var(--border-color);
    z-index: 1000;
    display: flex;
    flex-direction: column;
    box-shadow: -4px 0 20px rgba(0, 0, 0, 0.3);
    animation: slideIn 0.3s ease;
}

@keyframes slideIn {
    from {
        transform: translateX(100%);
    }

    to {
        transform: translateX(0);
    }
}

.edit-tools-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--spacing-md) var(--spacing-lg);
    background: var(--bg-tertiary);
    border-bottom: 1px solid var(--border-color);
}

.edit-tools-header h3 {
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--text-primary);
}

.close-panel-btn {
    width: 32px;
    height: 32px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: transparent;
    border: none;
    color: var(--text-secondary);
    font-size: 1.5rem;
    cursor: pointer;
    border-radius: var(--radius-sm);
    transition: all var(--transition-fast);
}

.close-panel-btn:hover {
    background: var(--bg-primary);
    color: var(--text-primary);
}

/* Edit Tabs */
.edit-tabs {
    display: flex;
    background: var(--bg-tertiary);
    border-bottom: 1px solid var(--border-color);
}

.edit-tab {
    flex: 1;
    padding: var(--spacing-sm) var(--spacing-xs);
    background: transparent;
    border: none;
    color: var(--text-muted);
    font-size: 0.8rem;
    font-weight: 500;
    cursor: pointer;
    transition: all var(--transition-fast);
    border-bottom: 2px solid transparent;
}

.edit-tab:hover {
    color: var(--text-secondary);
    background: rgba(255, 255, 255, 0.03);
}

.edit-tab.active {
    color: var(--accent-primary);
    border-bottom-color: var(--accent-primary);
    background: rgba(99, 102, 241, 0.1);
}

/* Tab Content */
.edit-tab-content {
    flex: 1;
    padding: var(--spacing-md);
    overflow-y: auto;
    display: none;
}

.edit-tab-content.active {
    display: flex;
    flex-direction: column;
}

.tab-description {
    font-size: 0.85rem;
    color: var(--text-muted);
    margin-bottom: var(--spacing-md);
}

/* Color List */
.color-list {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-md);
}

.color-item {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    padding: var(--spacing-xs) var(--spacing-sm);
    background: var(--bg-tertiary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    cursor: pointer;
    transition: all var(--transition-fast);
}

.color-item:hover {
    border-color: var(--accent-primary);
    transform: scale(1.05);
}

.color-item.selected {
    border-color: var(--accent-primary);
    box-shadow: 0 0 0 2px var(--accent-glow);
}

.color-swatch {
    width: 24px;
    height: 24px;
    border-radius: var(--radius-sm);
    border: 1px solid rgba(255, 255, 255, 0.2);
}

.color-count {
    font-size: 0.75rem;
    color: var(--text-muted);
}

/* Color Picker Container */
.color-picker-container {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-md);
    background: var(--bg-tertiary);
    border-radius: var(--radius-md);
    margin-top: var(--spacing-md);
}

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

#colorPicker {
    width: 50px;
    height: 35px;
    border: none;
    border-radius: var(--radius-sm);
    cursor: pointer;
}

.apply-color-btn,
.cancel-color-btn {
    padding: var(--spacing-xs) var(--spacing-sm);
    border: none;
    border-radius: var(--radius-sm);
    font-size: 0.85rem;
    cursor: pointer;
    transition: all var(--transition-fast);
}

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

.apply-color-btn:hover {
    background: var(--accent-secondary);
}

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

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

/* Background Options */
.background-options {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-md);
}

.bg-option {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-sm);
    background: var(--bg-tertiary);
    border-radius: var(--radius-sm);
}

.bg-option label {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    font-size: 0.85rem;
    color: var(--text-secondary);
    cursor: pointer;
    flex: 1;
}

.bg-option input[type="radio"] {
    accent-color: var(--accent-primary);
}

.bg-color-input {
    width: 40px;
    height: 30px;
    border: none;
    border-radius: var(--radius-sm);
    cursor: pointer;
}

.bg-color-selector {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    margin-top: var(--spacing-xs);
    padding-left: 20px;
}

.bg-color-dropdown {
    flex: 1;
    padding: var(--spacing-xs) var(--spacing-sm);
    background: var(--bg-primary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    color: var(--text-secondary);
    font-size: 0.8rem;
    cursor: pointer;
    max-width: 150px;
}

.bg-color-dropdown:focus {
    border-color: var(--accent-primary);
    outline: none;
}

.bg-color-dropdown option {
    background: var(--bg-secondary);
    color: var(--text-primary);
}

.tolerance-control {
    margin-bottom: var(--spacing-md);
}

.tolerance-control label {
    display: block;
    font-size: 0.85rem;
    color: var(--text-secondary);
    margin-bottom: var(--spacing-xs);
}

.tolerance-control input[type="range"] {
    width: 100%;
}

.mask-mode-control {
    margin-bottom: var(--spacing-md);
    padding: var(--spacing-sm);
    background: var(--bg-tertiary);
    border-radius: var(--radius-sm);
    border: 1px solid var(--border-color);
}

.mask-checkbox {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    cursor: pointer;
    font-size: 0.85rem;
    color: var(--text-primary);
}

.mask-checkbox input[type="checkbox"] {
    accent-color: var(--accent-primary);
    width: 16px;
    height: 16px;
}

.mask-hint {
    font-size: 0.75rem;
    color: var(--text-muted);
    margin-top: var(--spacing-xs);
    margin-left: 24px;
}

.remove-bg-btn,
.restore-btn {
    width: 100%;
    padding: var(--spacing-sm) var(--spacing-md);
    border: none;
    border-radius: var(--radius-md);
    font-size: 0.9rem;
    font-weight: 500;
    cursor: pointer;
    transition: all var(--transition-fast);
    margin-bottom: var(--spacing-sm);
}

.remove-bg-btn {
    background: linear-gradient(135deg, #ef4444, #dc2626);
    color: white;
}

.remove-bg-btn:hover {
    transform: translateY(-1px);
    box-shadow: 0 4px 12px rgba(239, 68, 68, 0.3);
}

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

.restore-btn:hover {
    color: var(--text-primary);
    border-color: var(--text-muted);
}

/* Layer List */
.layer-list {
    flex: 1;
    overflow-y: auto;
    margin-bottom: var(--spacing-md);
}

.layer-item {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-sm);
    background: var(--bg-tertiary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    margin-bottom: var(--spacing-xs);
    cursor: pointer;
    transition: all var(--transition-fast);
}

.layer-item:hover {
    border-color: var(--accent-primary);
}

.layer-item.hidden-layer {
    opacity: 0.5;
}

.layer-checkbox {
    accent-color: var(--accent-primary);
    width: 18px;
    height: 18px;
}

.layer-color {
    width: 28px;
    height: 28px;
    border-radius: var(--radius-sm);
    border: 1px solid rgba(255, 255, 255, 0.2);
}

.layer-info {
    flex: 1;
    display: flex;
    flex-direction: column;
}

.layer-name {
    font-size: 0.85rem;
    color: var(--text-primary);
}

.layer-paths {
    font-size: 0.75rem;
    color: var(--text-muted);
}

.layer-visibility-btn {
    width: 28px;
    height: 28px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: transparent;
    border: none;
    color: var(--text-secondary);
    cursor: pointer;
    border-radius: var(--radius-sm);
    transition: all var(--transition-fast);
}

.layer-visibility-btn:hover {
    background: var(--bg-primary);
    color: var(--text-primary);
}

.layer-download-btn {
    width: 28px;
    height: 28px;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--accent-primary);
    border: none;
    color: white;
    cursor: pointer;
    border-radius: var(--radius-sm);
    transition: all var(--transition-fast);
}

.layer-download-btn:hover {
    background: var(--accent-secondary);
}

/* Layer Actions */
.layer-actions {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-sm);
    padding-top: var(--spacing-sm);
    border-top: 1px solid var(--border-color);
}

.layer-action-btn {
    flex: 1;
    min-width: calc(50% - var(--spacing-sm) / 2);
    padding: var(--spacing-xs) var(--spacing-sm);
    background: var(--bg-tertiary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    color: var(--text-secondary);
    font-size: 0.8rem;
    cursor: pointer;
    transition: all var(--transition-fast);
}

.layer-action-btn:hover {
    border-color: var(--accent-primary);
    color: var(--text-primary);
}

.layer-action-btn.primary {
    background: var(--accent-primary);
    border-color: var(--accent-primary);
    color: white;
    width: 100%;
    flex: none;
}

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

/* Open Edit Tools Button */
.open-edit-tools-btn {
    position: fixed;
    right: var(--spacing-lg);
    bottom: var(--spacing-lg);
    padding: var(--spacing-sm) var(--spacing-lg);
    background: linear-gradient(135deg, var(--accent-primary), var(--accent-secondary));
    border: none;
    border-radius: var(--radius-lg);
    color: white;
    font-size: 1rem;
    font-weight: 500;
    cursor: pointer;
    box-shadow: var(--shadow-lg);
    z-index: 100;
    transition: all var(--transition-normal);
}

.open-edit-tools-btn:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-glow);
}

/* Empty Message */
.empty-message {
    color: var(--text-muted);
    font-size: 0.85rem;
    text-align: center;
    padding: var(--spacing-lg);
}