@import url('https://fonts.googleapis.com/css2?family=Outfit:wght@400;600;800&family=Be+Vietnam+Pro:wght@300;400;500;600&family=JetBrains+Mono:wght@400;500&display=swap');

:root {
    --bg-app: #0f0f11;
    --bg-sidebar: #161618;
    --bg-panel: #1c1c1f;
    --bg-input: #232326;
    --bg-hover: #2a2a2e;
    
    --text-main: #e0e0e0;
    --text-muted: #8f8f9d;
    --text-dim: #5a5a60;
    
    --accent: #ccff00; /* Neon Lime */
    --accent-dim: rgba(204, 255, 0, 0.1);
    --accent-text: #0f0f11;
    
    --border: #2a2a2e;
    --border-light: #3a3a40;
    
    --font-display: 'Outfit', sans-serif;
    --font-body: 'Be Vietnam Pro', sans-serif;
    --font-mono: 'JetBrains Mono', monospace;
    
    --radius-sm: 4px;
    --radius-md: 8px;
    --radius-lg: 12px;
    
    --spacing-xs: 4px;
    --spacing-sm: 8px;
    --spacing-md: 16px;
    --spacing-lg: 24px;
    --spacing-xl: 32px;
    
    --sidebar-width: 320px;
}

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

body {
    font-family: var(--font-body);
    background-color: var(--bg-app);
    color: var(--text-main);
    line-height: 1.5;
    height: 100vh;
    overflow: hidden;
    -webkit-font-smoothing: antialiased;
}

/* Layout */
.app-container {
    display: flex;
    height: 100vh;
    width: 100vw;
}

.sidebar {
    background-color: var(--bg-sidebar);
    border-right: 1px solid var(--border);
    display: flex;
    flex-direction: column;
    height: 100%;
    flex-shrink: 0;
    z-index: 10;
    position: relative;
}

/* Sidebar Resize Handle */
.sidebar-resize-handle {
    position: absolute;
    top: 0;
    right: -3px;
    width: 6px;
    height: 100%;
    cursor: col-resize;
    z-index: 20;
    background: transparent;
    transition: background-color 0.2s;
}

.sidebar-resize-handle:hover,
.sidebar-resize-handle.dragging {
    background-color: var(--accent);
}

/* Sidebar Footer */
.sidebar-footer {
    padding: 4px var(--spacing-sm);
    border-top: 1px solid var(--border);
    display: flex;
    justify-content: flex-end;
    flex-shrink: 0;
}

.sidebar-toggle-btn {
    background: transparent;
    border: 1px solid var(--border);
    color: var(--text-muted);
    width: 28px;
    height: 28px;
    border-radius: var(--radius-sm);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.7rem;
    transition: all 0.2s;
}

.sidebar-toggle-btn:hover {
    color: var(--text-main);
    border-color: var(--text-muted);
}

.sidebar-toggle-arrow {
    display: inline-block;
    transition: transform 0.3s ease;
}

/* Collapsed sidebar state */
.sidebar.collapsed {
    width: 0 !important;
    min-width: 0 !important;
    overflow: hidden;
    border-right: none;
    padding: 0;
}

.sidebar.collapsed > *:not(.sidebar-resize-handle) {
    display: none;
}

/* When collapsed, show a small expand tab on the left edge of the content area */
.sidebar-expand-tab {
    position: fixed;
    left: 0;
    top: 50%;
    transform: translateY(-50%);
    width: 20px;
    height: 48px;
    background-color: var(--bg-sidebar);
    border: 1px solid var(--border);
    border-left: none;
    border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-muted);
    font-size: 0.7rem;
    z-index: 20;
    transition: all 0.2s;
}

.sidebar-expand-tab:hover {
    width: 24px;
    background-color: var(--bg-hover);
    color: var(--accent);
}

/* Transition class - only applied during collapse/expand toggle, NOT during drag */
.sidebar.transitioning {
    transition: width 0.3s ease;
}

.content-area {
    flex: 1;
    background-color: var(--bg-app);
    display: flex;
    flex-direction: column;
    position: relative;
    overflow: hidden;
}

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

.sidebar-header h2 {
    font-family: var(--font-display);
    font-weight: 800;
    font-size: 1.25rem;
    letter-spacing: -0.02em;
    color: var(--text-main);
}

.btn-primary {
    background-color: var(--accent);
    color: var(--accent-text);
    border: none;
    width: 32px;
    height: 32px;
    border-radius: var(--radius-sm);
    font-family: var(--font-display);
    font-weight: 600;
    font-size: 1.2rem;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.btn-primary:hover {
    transform: translateY(-1px);
    box-shadow: 0 4px 12px var(--accent-dim);
}

.btn-primary:active {
    transform: translateY(0);
}

/* Filter Panel */
.filter-panel {
    padding: var(--spacing-md);
    border-bottom: 1px solid var(--border);
    overflow-y: auto;
    max-height: 50vh;
}

.filter-panel::-webkit-scrollbar {
    width: 4px;
}

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

.search-container {
    margin-bottom: var(--spacing-md);
}

.search-input {
    width: 100%;
    background-color: var(--bg-input);
    border: 1px solid var(--border);
    color: var(--text-main);
    padding: var(--spacing-sm) var(--spacing-md);
    border-radius: var(--radius-sm);
    font-family: var(--font-body);
    font-size: 0.9rem;
    transition: border-color 0.2s ease;
}

.search-input:focus {
    outline: none;
    border-color: var(--accent);
}

.filter-group {
    margin-bottom: var(--spacing-md);
}

.filter-group label {
    display: block;
    font-family: var(--font-display);
    font-weight: 600;
    font-size: 0.75rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--text-muted);
    margin-bottom: var(--spacing-xs);
}

/* Radio Group */
.radio-group {
    display: flex;
    gap: var(--spacing-xs);
    flex-wrap: wrap;
}

.radio-option {
    position: relative;
    cursor: pointer;
}

.radio-option input {
    position: absolute;
    opacity: 0;
    cursor: pointer;
}

.radio-option span {
    display: inline-block;
    padding: 4px 12px;
    background-color: var(--bg-input);
    border: 1px solid var(--border);
    border-radius: 100px;
    font-size: 0.8rem;
    color: var(--text-muted);
    transition: all 0.2s ease;
}

.radio-option input:checked + span {
    background-color: var(--accent-dim);
    border-color: var(--accent);
    color: var(--accent);
    font-weight: 600;
}

.radio-option:hover span {
    border-color: var(--text-muted);
}

/* Pills Bar */
.pills-bar {
    display: flex;
    flex-wrap: wrap;
    gap: 6px;
    margin-bottom: 8px;
}

.pills-bar:empty {
    display: none;
}

.filter-pill {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    background-color: var(--accent-dim);
    border: 1px solid var(--accent);
    border-radius: 100px;
    padding: 2px 8px;
    font-size: 0.75rem;
    color: var(--accent);
    animation: fadeIn 0.2s ease;
}

.pill-remove {
    background: none;
    border: none;
    color: var(--accent);
    cursor: pointer;
    font-size: 1rem;
    line-height: 1;
    padding: 0;
    opacity: 0.7;
    transition: opacity 0.2s;
}

.pill-remove:hover {
    opacity: 1;
    color: #ff4d4f;
}

/* Filter List */
.filter-list {
    max-height: 150px;
    overflow-y: auto;
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    background-color: var(--bg-input);
    margin-top: 8px;
}

.filter-list::-webkit-scrollbar {
    width: 4px;
}

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

.filter-list-item {
    padding: 6px 10px;
    font-size: 0.8rem;
    color: var(--text-muted);
    cursor: pointer;
    display: flex;
    justify-content: space-between;
    align-items: center;
    transition: background-color 0.2s;
}

.filter-list-item:hover {
    background-color: var(--bg-hover);
    color: var(--text-main);
}

.filter-list-item.active {
    background-color: var(--accent-dim);
    color: var(--accent);
    font-weight: 500;
}

.filter-count {
    font-size: 0.7rem;
    opacity: 0.6;
    background-color: var(--bg-app);
    padding: 1px 6px;
    border-radius: 10px;
}

/* Date Tree */
.date-tree {
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    background-color: var(--bg-input);
    max-height: 200px;
    overflow-y: auto;
    padding: 4px;
}

.date-tree::-webkit-scrollbar {
    width: 4px;
}

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

.date-year-header {
    display: flex;
    align-items: center;
    padding: 4px 8px;
    cursor: pointer;
    font-size: 0.85rem;
    color: var(--text-main);
    border-radius: var(--radius-sm);
}

.date-year-header:hover {
    background-color: var(--bg-hover);
}

.date-expand-arrow {
    margin-left: auto;
    font-size: 0.7rem;
    transition: transform 0.2s;
    color: var(--text-muted);
}

.date-year-header.expanded .date-expand-arrow {
    transform: rotate(90deg);
}

.date-year-months {
    display: none;
    padding-left: 24px;
}

.date-year-header.expanded + .date-year-months {
    display: block;
}

.date-month {
    display: flex;
    align-items: center;
    padding: 4px 8px;
    font-size: 0.8rem;
    color: var(--text-muted);
    cursor: pointer;
    border-radius: var(--radius-sm);
}

.date-month:hover {
    background-color: var(--bg-hover);
    color: var(--text-main);
}

.date-checkbox {
    margin-right: 8px;
    accent-color: var(--accent);
    cursor: pointer;
}

.date-toggle-bar {
    display: flex;
    gap: 8px;
    margin-bottom: 8px;
}

.date-toggle-bar button {
    font-size: 0.7rem;
    padding: 2px 8px;
    height: auto;
}

.btn-small {
    padding: 4px 10px;
    font-size: 0.75rem;
    border-radius: var(--radius-sm);
}

.clear-filters-btn {
    width: 100%;
    margin-bottom: var(--spacing-md);
}

.checkbox-group {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-sm);
}

.checkbox-group label {
    display: flex;
    align-items: center;
    gap: 6px;
    font-family: var(--font-body);
    font-weight: 400;
    font-size: 0.85rem;
    color: var(--text-main);
    cursor: pointer;
    text-transform: none;
    letter-spacing: normal;
    margin-bottom: 0;
}

.checkbox-group input[type="checkbox"] {
    appearance: none;
    width: 14px;
    height: 14px;
    border: 1px solid var(--border-light);
    border-radius: 2px;
    background-color: var(--bg-input);
    cursor: pointer;
    position: relative;
}

.checkbox-group input[type="checkbox"]:checked {
    background-color: var(--accent);
    border-color: var(--accent);
}

.checkbox-group input[type="checkbox"]:checked::after {
    content: '';
    position: absolute;
    top: 2px;
    left: 4px;
    width: 4px;
    height: 7px;
    border: solid var(--accent-text);
    border-width: 0 2px 2px 0;
    transform: rotate(45deg);
}

.filter-input {
    width: 100%;
    background-color: var(--bg-input);
    border: 1px solid var(--border);
    color: var(--text-main);
    padding: 6px 10px;
    border-radius: var(--radius-sm);
    font-family: var(--font-body);
    font-size: 0.85rem;
}

.filter-input:focus {
    outline: none;
    border-color: var(--accent);
}

/* Note List */
.note-list-container {
    flex: 1;
    display: flex;
    flex-direction: column;
    overflow: hidden;
}

.note-list-header {
    padding: var(--spacing-sm) var(--spacing-md);
    display: flex;
    justify-content: space-between;
    align-items: center;
    border-bottom: 1px solid var(--border);
    background-color: var(--bg-sidebar);
}

#note-count {
    font-size: 0.75rem;
    color: var(--text-muted);
    font-family: var(--font-mono);
}

.sort-select {
    background: transparent;
    border: none;
    color: var(--text-muted);
    font-size: 0.75rem;
    font-family: var(--font-body);
    cursor: pointer;
}

.sort-select:hover {
    color: var(--text-main);
}

.note-list {
    list-style: none;
    overflow-y: auto;
    flex: 1;
}

.note-list::-webkit-scrollbar {
    width: 4px;
}

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

.note-item {
    padding: var(--spacing-md);
    border-bottom: 1px solid var(--border);
    cursor: pointer;
    transition: background-color 0.2s ease;
    position: relative;
}

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

.note-item.active {
    background-color: var(--bg-hover);
    border-left: 3px solid var(--accent);
}

.note-item-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    margin-bottom: 6px;
}

.note-title {
    font-family: var(--font-display);
    font-weight: 600;
    font-size: 0.95rem;
    color: var(--text-main);
    line-height: 1.3;
}

.note-meta {
    display: flex;
    align-items: center;
    gap: 8px;
    margin-bottom: 8px;
}

.note-badge {
    font-size: 0.65rem;
    padding: 2px 6px;
    border-radius: 4px;
    text-transform: uppercase;
    font-weight: 600;
    letter-spacing: 0.05em;
}

.note-date {
    font-family: var(--font-mono);
    font-size: 0.7rem;
    color: var(--text-dim);
}

.note-preview {
    font-size: 0.8rem;
    color: var(--text-muted);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    line-height: 1.4;
}

/* Empty State */
.empty-state {
    flex: 1;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    padding: var(--spacing-xl);
}

.empty-state-content h3 {
    font-family: var(--font-display);
    font-weight: 600;
    font-size: 1.5rem;
    margin-bottom: var(--spacing-sm);
    color: var(--text-main);
}

.empty-state-content p {
    color: var(--text-muted);
    max-width: 400px;
}

/* Responsive */
@media (max-width: 768px) {
    .app-container {
        flex-direction: column;
    }
    
    .sidebar {
        width: 100%;
        height: auto;
        max-height: 40vh;
        border-right: none;
        border-bottom: 1px solid var(--border);
    }
    
    .filter-panel {
        display: none; /* Hide filters on mobile initially or toggle */
    }
}

/* Editor Styles */
.editor-container {
    display: flex;
    flex-direction: column;
    height: 100%;
    background-color: var(--bg-app);
}

.editor-header {
    padding: var(--spacing-lg) var(--spacing-xl);
    background-color: var(--bg-app);
    border-bottom: 1px solid var(--border);
    flex-shrink: 0;
}

.form-row {
    margin-bottom: var(--spacing-md);
    display: flex;
    gap: var(--spacing-lg);
}

.form-row:last-child {
    margin-bottom: 0;
}

.title-row {
    margin-bottom: var(--spacing-lg);
    align-items: center;
}

.title-actions {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    flex-shrink: 0;
}

.title-row .title-input {
    flex: 1;
}

.title-input {
    width: 100%;
    font-family: var(--font-display);
    font-size: 2rem;
    font-weight: 700;
    background: transparent;
    border: none;
    outline: none;
    color: var(--text-main);
    padding: 0;
    line-height: 1.2;
}

.title-input::placeholder {
    color: var(--text-dim);
}

.meta-row {
    align-items: flex-start;
}

.form-group {
    display: flex;
    flex-direction: column;
    gap: 6px;
}

.form-group label {
    font-family: var(--font-display);
    font-size: 0.7rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--text-muted);
    font-weight: 600;
}

.form-group select {
    padding: 8px 12px;
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    background-color: var(--bg-input);
    color: var(--text-main);
    font-family: var(--font-body);
    font-size: 0.9rem;
    min-width: 140px;
    cursor: pointer;
    transition: border-color 0.2s ease;
}

.form-group select:focus {
    outline: none;
    border-color: var(--accent);
}

.full-width {
    width: 100%;
}

/* Tag Input Styles */
.tag-input-container {
    display: flex;
    flex-wrap: wrap;
    gap: 6px;
    padding: 6px;
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    min-height: 42px;
    align-items: center;
    background-color: var(--bg-input);
    transition: border-color 0.2s ease;
}

.tag-input-container:focus-within {
    border-color: var(--accent);
}

.tag-chip {
    background-color: var(--bg-panel);
    color: var(--text-main);
    padding: 4px 10px;
    border-radius: 100px;
    font-size: 0.85rem;
    display: flex;
    align-items: center;
    gap: 6px;
    border: 1px solid var(--border-light);
}

.tag-chip .remove-tag {
    cursor: pointer;
    color: var(--text-muted);
    font-weight: bold;
    font-size: 1rem;
    line-height: 1;
    display: flex;
    align-items: center;
    justify-content: center;
    width: 16px;
    height: 16px;
    border-radius: 50%;
    transition: all 0.2s ease;
}

.tag-chip .remove-tag:hover {
    background-color: rgba(255, 77, 79, 0.2);
    color: #ff4d4f;
}

.tag-input-field {
    border: none;
    outline: none;
    flex: 1;
    min-width: 100px;
    font-size: 0.9rem;
    padding: 4px;
    background: transparent;
    color: var(--text-main);
    font-family: var(--font-body);
}

.info-row {
    margin-top: var(--spacing-lg);
    font-size: 0.75rem;
    color: var(--text-dim);
    gap: var(--spacing-xl);
    font-family: var(--font-mono);
}

.info-item {
    display: inline-flex;
    gap: 8px;
}

.info-item span {
    color: var(--text-muted);
}

.hidden {
    display: none !important;
}

/* CodeMirror Container */
.cm-editor-container {
    flex: 1;
    overflow: hidden;
    display: flex;
    flex-direction: column;
    font-size: 1rem;
    background-color: var(--bg-app);
}

.cm-editor {
    height: 100%;
    background-color: var(--bg-app) !important;
    color: var(--text-main) !important;
}

.cm-scroller {
    overflow: auto;
    font-family: var(--font-mono) !important;
    line-height: 1.6 !important;
}

.cm-gutters {
    background-color: var(--bg-sidebar) !important;
    color: var(--text-dim) !important;
    border-right: 1px solid var(--border) !important;
}

.cm-activeLineGutter {
    background-color: var(--bg-hover) !important;
}

.cm-activeLine {
    background-color: rgba(255, 255, 255, 0.03) !important;
}

.cm-cursor {
    border-left-color: var(--accent) !important;
}

.btn-danger {
    background: transparent;
    color: #ff4d4f;
    border: 1px solid #ff4d4f;
    padding: 6px 16px;
    border-radius: var(--radius-sm);
    cursor: pointer;
    font-size: 0.9rem;
    font-family: var(--font-body);
    font-weight: 500;
    transition: all 0.2s ease;
}

.btn-danger:hover {
    background-color: rgba(255, 77, 79, 0.1);
}

.editor-footer {
    padding: var(--spacing-md) var(--spacing-xl);
    border-top: 1px solid var(--border);
    display: flex;
    justify-content: space-between;
    align-items: center;
    background-color: var(--bg-app);
    position: relative;
}

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

/* Save Status */
.save-status {
    font-family: var(--font-mono);
    font-size: 0.75rem;
    padding: 4px 10px;
    border-radius: var(--radius-sm);
    transition: all 0.3s ease;
    user-select: none;
}

.save-unsaved {
    color: var(--accent);
    background-color: var(--accent-dim);
}

.save-saving {
    color: var(--text-muted);
}

.save-saved {
    color: #68d391;
    background-color: rgba(72, 187, 120, 0.1);
}

.save-error {
    color: #ff4d4f;
    background-color: rgba(255, 77, 79, 0.1);
    cursor: pointer;
}

/* Secondary Button */
.btn-secondary {
    background: transparent;
    color: var(--accent);
    border: 1px solid var(--accent);
    padding: 6px 16px;
    border-radius: var(--radius-sm);
    cursor: pointer;
    font-size: 0.9rem;
    font-family: var(--font-body);
    font-weight: 500;
    transition: all 0.2s ease;
}

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

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

/* Accent & Ghost Buttons (for modals/popovers) */
.btn-accent {
    background-color: var(--accent);
    color: var(--accent-text);
    border: none;
    padding: 8px 20px;
    border-radius: var(--radius-sm);
    cursor: pointer;
    font-family: var(--font-body);
    font-weight: 600;
    font-size: 0.9rem;
    transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.btn-accent:hover {
    transform: translateY(-1px);
    box-shadow: 0 4px 12px var(--accent-dim);
}

.btn-ghost {
    background: transparent;
    color: var(--text-muted);
    border: 1px solid var(--border-light);
    padding: 8px 20px;
    border-radius: var(--radius-sm);
    cursor: pointer;
    font-family: var(--font-body);
    font-weight: 500;
    font-size: 0.9rem;
    transition: all 0.2s ease;
}

.btn-ghost:hover {
    color: var(--text-main);
    border-color: var(--text-muted);
}

/* Session Conflict Modal */
.modal-overlay {
    position: fixed;
    inset: 0;
    background-color: rgba(0, 0, 0, 0.7);
    backdrop-filter: blur(4px);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 1000;
    animation: fadeIn 0.2s ease;
}

.modal-box {
    background-color: var(--bg-panel);
    border: 1px solid var(--border-light);
    border-radius: var(--radius-lg);
    padding: var(--spacing-xl);
    max-width: 420px;
    width: 90%;
    box-shadow: 0 24px 48px rgba(0, 0, 0, 0.4);
}

.modal-box h3 {
    font-family: var(--font-display);
    font-weight: 700;
    font-size: 1.2rem;
    margin-bottom: var(--spacing-sm);
    color: var(--text-main);
}

.modal-box p {
    color: var(--text-muted);
    font-size: 0.9rem;
    margin-bottom: var(--spacing-lg);
    line-height: 1.5;
}

.modal-actions {
    display: flex;
    gap: var(--spacing-sm);
    justify-content: flex-end;
}

/* Classify Popover */
.classify-popover {
    position: absolute;
    bottom: 100%;
    right: var(--spacing-xl);
    margin-bottom: var(--spacing-sm);
    background-color: var(--bg-panel);
    border: 1px solid var(--border-light);
    border-radius: var(--radius-lg);
    padding: var(--spacing-md);
    min-width: 320px;
    box-shadow: 0 12px 32px rgba(0, 0, 0, 0.3);
    animation: slideUp 0.2s ease;
    z-index: 50;
}

.classify-header {
    font-family: var(--font-display);
    font-weight: 700;
    font-size: 0.85rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--accent);
    margin-bottom: var(--spacing-md);
}

.classify-row {
    margin-bottom: var(--spacing-sm);
    font-size: 0.85rem;
    color: var(--text-main);
    display: flex;
    align-items: flex-start;
    gap: var(--spacing-sm);
    flex-wrap: wrap;
}

.classify-row strong {
    color: var(--text-muted);
    min-width: 80px;
    flex-shrink: 0;
}

.classify-actions {
    display: flex;
    gap: var(--spacing-sm);
    justify-content: flex-end;
    margin-top: var(--spacing-md);
    padding-top: var(--spacing-md);
    border-top: 1px solid var(--border);
}

/* Read-only overlay */
.editor-readonly {
    pointer-events: none;
    opacity: 0.6;
}

.editor-readonly::after {
    content: 'READ ONLY';
    position: absolute;
    top: var(--spacing-md);
    right: var(--spacing-md);
    font-family: var(--font-mono);
    font-size: 0.7rem;
    font-weight: 600;
    letter-spacing: 0.1em;
    color: var(--text-dim);
    background-color: var(--bg-input);
    border: 1px solid var(--border);
    padding: 4px 10px;
    border-radius: var(--radius-sm);
    pointer-events: none;
}

@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

@keyframes slideUp {
    from { opacity: 0; transform: translateY(8px); }
    to { opacity: 1; transform: translateY(0); }
}