:root {
    --bg-color: #f3f4f6;
    --sidebar-bg: #ffffff;
    --text-primary: #111827;
    --text-secondary: #6b7280;
    --accent-color: #c00000;
    /* CUSTOM BRAND RED */
    --accent-hover: #a00000;
    --border-color: #e5e7eb;
    --success-color: #10b981;
    --editor-bg: #ffffff;
    --input-bg: #ffffff;
    --modal-bg: #ffffff;
}

/* Dark Mode - Warm grey/sepia tones to differentiate from document output */
[data-theme="dark"] {
    --bg-color: #1a1a1f;
    --sidebar-bg: #242429;
    --text-primary: #e8e6e3;
    --text-secondary: #a8a5a0;
    --accent-color: #e04040;
    --accent-hover: #cc3333;
    --border-color: #3a3a42;
    --success-color: #22c997;
    --editor-bg: #2d2d33;
    --input-bg: #333338;
    --modal-bg: #2a2a30;
}

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

body {
    font-family: 'Outfit', sans-serif;
    background-color: var(--bg-color);
    color: var(--text-primary);
    height: 100vh;
    overflow: hidden;
}

.app-container {
    display: grid;
    grid-template-columns: 320px 1fr;
    height: 100vh;
    overflow: hidden;
    /* Ensure grid itself doesn't overflow */
}

/* Sidebar */
.sidebar {
    background-color: var(--sidebar-bg);
    border-right: 1px solid var(--border-color);
    display: flex;
    flex-direction: column;
    height: 100%;
    box-shadow: 4px 0 24px rgba(0, 0, 0, 0.02);
    overflow: hidden;
    /* Ensure proper scroll container behavior */
    z-index: 10;
}

.sidebar-header {
    padding: 1rem 1.5rem;
    border-bottom: 1px solid var(--border-color);
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
    align-items: center;
}

.sidebar-header h2 {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--accent-color);
    /* Uses Red */
    /* Allow title to take available space, buttons wrap to next row if needed */
    flex: 1 1 auto;
    min-width: 0;
}

.sidebar-controls {
    padding: 1rem 1.5rem;
    background-color: #f9fafb;
    border-bottom: 1px solid var(--border-color);
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
}

.input-group label {
    display: block;
    font-size: 0.75rem;
    font-weight: 600;
    color: var(--text-secondary);
    margin-bottom: 0.25rem;
    text-transform: uppercase;
}

.input-group input {
    width: 100%;
    padding: 0.5rem;
    border: 1px solid var(--border-color);
    border-radius: 6px;
    font-family: inherit;
    font-size: 0.9rem;
}

.row {
    display: flex;
    gap: 0.5rem;
}

.mode-toggle {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-top: 0.25rem;
}

.toggle-options {
    display: flex;
    gap: 1rem;
}

.radio-label {
    font-size: 0.9rem;
    font-weight: 500;
    cursor: pointer;
    display: flex;
    align-items: center;
    gap: 0.3rem;
}

.actions {
    display: flex;
    gap: 0.5rem;
}

.icon-btn {
    background: none;
    border: none;
    cursor: pointer;
    font-size: 1.2rem;
    color: var(--text-secondary);
    padding: 4px;
    border-radius: 4px;
    transition: all 0.2s;
}

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

.block-list-container {
    flex: 1;
    overflow-y: auto;
    padding: 1rem;
}

.block-list {
    list-style: none;
    min-height: 40px;
    /* Ensures empty sections have a droppable area */
}

/* Sortable drag placeholder - thin line instead of full block ghost */
.sortable-ghost {
    opacity: 0;
    height: 4px !important;
    min-height: 4px !important;
    max-height: 4px !important;
    padding: 0 !important;
    margin: 4px 0 !important;
    background: var(--accent-color) !important;
    border: none !important;
    border-radius: 2px !important;
    overflow: hidden;
}

.sortable-ghost * {
    display: none !important;
}

/* Dragging item style */
.sortable-drag {
    opacity: 0.9;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
}

.block-item {
    display: flex;
    align-items: center;
    padding: 0.75rem;
    background: white;
    border: 1px solid var(--border-color);
    margin-bottom: 0.5rem;
    border-radius: 8px;
    cursor: pointer;
    transition: all 0.2s;
    user-select: none;
}

.block-item:hover {
    border-color: var(--accent-color);
    transform: translateY(-1px);
    box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.05);
}

.block-item.active {
    border-color: var(--accent-color);
    background-color: #fef2f2;
    /* Light Red tint */
}

.block-handle {
    cursor: move;
    color: var(--text-secondary);
    margin-right: 0.75rem;
    opacity: 0.5;
}

.block-checkbox {
    margin-right: 0.75rem;
    width: 16px;
    height: 16px;
    cursor: pointer;
}

.block-name {
    flex: 1;
    font-size: 0.95rem;
    font-weight: 500;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.sidebar-footer {
    padding: 1.5rem;
    border-top: 1px solid var(--border-color);
}

.primary-btn {
    width: 100%;
    padding: 0.75rem;
    background-color: var(--accent-color);
    /* Red */
    color: white;
    border: none;
    border-radius: 8px;
    font-weight: 600;
    cursor: pointer;
    transition: background 0.2s;
    box-shadow: 0 4px 6px -1px rgba(192, 0, 0, 0.2);
}

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

/* Main Content */
.main-content {
    display: flex;
    flex-direction: column;
    height: 100%;
    background-color: #f9fafb;
    overflow: hidden;
    /* STRICT CONSTRAINT */
    position: relative;
    min-width: 0;
    /* Prevent flex overflow */
}

.editor-header {
    background: white;
    padding: 0.5rem 1rem;
    border-bottom: 1px solid var(--border-color);
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-shrink: 0;
    gap: 8px;
}

#block-title-input {
    font-size: 1.25rem;
    font-weight: 700;
    border: none;
    outline: none;
    width: 100%;
    font-family: 'Outfit', sans-serif;
    color: var(--accent-color);
    /* Red Heading in Editor UI */
}

.status-indicator {
    font-size: 0.8rem;
    color: var(--text-secondary);
    font-weight: 500;
}

#editor-container {
    flex: 1;
    display: flex;
    flex-direction: column;
    overflow: hidden;
    /* Confine children */
    min-height: 0;
    /* CRITICAL for nested flex scrolling */
    position: relative;
}

.ql-toolbar {
    border: none !important;
    border-bottom: 1px solid var(--border-color) !important;
    background: white;
    padding: 0.75rem !important;
    flex-shrink: 0;
    /* Keep toolbar static */
    z-index: 2;
}

.ql-container {
    border: none !important;
    flex: 1 1 auto;
    /* Allow grow and shrink */
    display: flex;
    /* Flex column to contain editor */
    flex-direction: column;
    overflow: hidden;
    /* Hide container overflow */
    min-height: 0;
    /* Allow shrinking */
    font-family: 'Calibri', sans-serif;
    font-size: 1.1rem;
    position: relative;
    /* Context for absolute children */
}

.ql-editor {
    padding: 2rem 3rem !important;
    max-width: 900px;
    margin: 0 auto;
    width: 100%;
    background: white;
    box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.05);
    flex: 1 1 auto;
    /* Take remaining space */
    overflow-y: auto;
    /* Scroll internal content */
    /* REMOVED fixed height: 100% to let flex handle it */
}

/* Editor Logic Styles */
h1,
h2,
h3,
h4,
h5,
h6 {
    color: var(--accent-color);
    margin-bottom: 0.5rem;
    font-weight: 600;
}

/* Pricing Table CSS - "Force Red" Strategy */
.ql-editor table {
    width: 100%;
    border-collapse: collapse;
    margin: 1rem 0;
    font-size: 0.95rem;
    border: 1px solid #ddd;
}

.ql-editor table td {
    padding: 8px;
    border: 1px solid #ddd;
}

/* Force First Row (Header) Red */
.ql-editor table tr:first-child td {
    background-color: #c00000 !important;
    color: white !important;
    font-weight: bold;
}

/* Force Last Row (Total) Red */
.ql-editor table tr:last-child td {
    background-color: #c00000 !important;
    color: white !important;
    font-weight: bold;
}

/* Dark Mode Specific Overrides */
[data-theme="dark"] .ql-toolbar {
    background-color: var(--sidebar-bg);
    border-color: var(--border-color);
}

[data-theme="dark"] .ql-toolbar button {
    color: var(--text-primary);
}

[data-theme="dark"] .ql-toolbar button:hover,
[data-theme="dark"] .ql-toolbar button.ql-active {
    color: var(--accent-color);
}

[data-theme="dark"] .ql-toolbar .ql-stroke {
    stroke: var(--text-primary);
}

[data-theme="dark"] .ql-toolbar button:hover .ql-stroke,
[data-theme="dark"] .ql-toolbar button.ql-active .ql-stroke {
    stroke: var(--accent-color);
}

[data-theme="dark"] .ql-toolbar .ql-fill {
    fill: var(--text-primary);
}

[data-theme="dark"] .ql-toolbar button:hover .ql-fill,
[data-theme="dark"] .ql-toolbar button.ql-active .ql-fill {
    fill: var(--accent-color);
}

[data-theme="dark"] .ql-toolbar .ql-picker {
    color: var(--text-primary);
}

[data-theme="dark"] .ql-toolbar .ql-picker-options {
    background-color: var(--modal-bg);
    border-color: var(--border-color);
}

[data-theme="dark"] .ql-container {
    border-color: var(--border-color);
}

[data-theme="dark"] .ql-editor {
    background-color: var(--editor-bg);
    color: var(--text-primary);
}

[data-theme="dark"] input,
[data-theme="dark"] select,
[data-theme="dark"] textarea {
    background-color: var(--input-bg);
    color: var(--text-primary);
    border-color: var(--border-color);
}

[data-theme="dark"] input::placeholder {
    color: var(--text-secondary);
}

[data-theme="dark"] .modal {
    background-color: var(--modal-bg);
    color: var(--text-primary);
}

[data-theme="dark"] .block-item {
    background-color: var(--input-bg);
    border-color: var(--border-color);
}

[data-theme="dark"] .block-item:hover {
    background-color: var(--border-color);
}

[data-theme="dark"] .block-item.active {
    background-color: var(--accent-color);
    border-color: var(--accent-color);
}

/* Theme Toggle Styles */
.theme-toggle-container {
    display: flex;
    align-items: center;
    gap: 10px;
    margin: 1rem 0;
    padding: 0.5rem 0;
    border-bottom: 1px solid var(--border-color);
}

.theme-toggle-container label {
    font-weight: 500;
    color: var(--text-primary);
}

.theme-toggle-container select {
    padding: 6px 12px;
    border-radius: 4px;
    border: 1px solid var(--border-color);
    background: var(--input-bg);
    color: var(--text-primary);
    cursor: pointer;
}

/* Modal Scrollable Fix */
.modal {
    max-height: 85vh;
    overflow-y: auto;
}

.modal-actions {
    padding-bottom: 1rem;
}

/* Dark Mode - Additional Fixes */
[data-theme="dark"] .sidebar {
    background-color: var(--sidebar-bg);
}

[data-theme="dark"] .sidebar-header {
    border-color: var(--border-color);
}

[data-theme="dark"] .sidebar-header h2 {
    color: var(--text-primary);
}

[data-theme="dark"] .sidebar-controls {
    background-color: var(--sidebar-bg);
}

[data-theme="dark"] .sidebar-controls label,
[data-theme="dark"] .sidebar-controls h4,
[data-theme="dark"] label {
    color: var(--text-secondary) !important;
}

[data-theme="dark"] .mode-toggle label {
    color: var(--text-primary) !important;
}

[data-theme="dark"] .editor-header {
    background-color: var(--sidebar-bg);
    border-color: var(--border-color);
}

[data-theme="dark"] .editor-header input {
    background-color: var(--input-bg);
    color: var(--text-primary);
    border-color: var(--border-color);
}

[data-theme="dark"] #block-properties-box {
    background: var(--sidebar-bg) !important;
    border-color: var(--border-color) !important;
}

[data-theme="dark"] main {
    background-color: var(--bg-color);
}

[data-theme="dark"] .primary-btn {
    background-color: var(--accent-color);
    color: white;
}

[data-theme="dark"] .icon-btn {
    background-color: var(--input-bg);
    color: var(--text-primary);
    border-color: var(--border-color);
}

[data-theme="dark"] .icon-btn:hover {
    background-color: var(--border-color);
}

[data-theme="dark"] .sidebar-footer {
    background-color: var(--sidebar-bg);
    border-color: var(--border-color);
}

[data-theme="dark"] .block-list-container {
    background-color: var(--sidebar-bg);
}

[data-theme="dark"] .section-header {
    background-color: var(--input-bg);
    border-color: var(--border-color);
    color: var(--text-primary);
}

[data-theme="dark"] .section-header:hover {
    background-color: var(--border-color);
}

[data-theme="dark"] h4,
[data-theme="dark"] p,
[data-theme="dark"] span {
    color: var(--text-primary);
}

[data-theme="dark"] .modal h3,
[data-theme="dark"] .modal h4 {
    color: var(--text-primary);
}

[data-theme="dark"] .modal p {
    color: var(--text-secondary);
}

[data-theme="dark"] .modal-overlay {
    background: rgba(0, 0, 0, 0.7);
}

[data-theme="dark"] .btn-close {
    background-color: var(--input-bg);
    color: var(--text-primary);
}

[data-theme="dark"] .btn-close:hover {
    background-color: var(--border-color);
}

[data-theme="dark"] .danger-zone {
    background-color: rgba(220, 38, 38, 0.15);
    border-color: rgba(220, 38, 38, 0.3);
}

[data-theme="dark"] .color-swatch {
    border-color: var(--border-color);
}

/* Sidebar inputs dark mode */
[data-theme="dark"] #sidebar-inputs input {
    background-color: var(--input-bg) !important;
    color: var(--text-primary) !important;
    border-color: var(--border-color) !important;
}

[data-theme="dark"] #sidebar-inputs input::placeholder {
    color: var(--text-secondary) !important;
}

/* ============================================================
   Storage Source Tabs (Phase 2)
   Sits between sidebar-controls and dynamic-block-container
   ============================================================ */

.storage-tabs {
    display: flex;
    gap: 0;
    border-bottom: 2px solid var(--border-color);
    background-color: var(--sidebar-bg);
    flex-shrink: 0;
}

.storage-tab {
    flex: 1;
    padding: 0.6rem 0.5rem;
    background: none;
    border: none;
    border-bottom: 3px solid transparent;
    margin-bottom: -2px;
    /* pulls tab border over container border */
    font-family: inherit;
    font-size: 0.85rem;
    font-weight: 600;
    color: var(--text-secondary);
    cursor: pointer;
    transition: color 0.2s, border-color 0.2s;
    letter-spacing: 0.02em;
}

.storage-tab:hover {
    color: var(--accent-color);
}

.storage-tab.active {
    color: var(--accent-color);
    border-bottom-color: var(--accent-color);
}

/* Dark mode */
[data-theme="dark"] .storage-tabs {
    background-color: var(--sidebar-bg);
    border-color: var(--border-color);
}

[data-theme="dark"] .storage-tab {
    color: var(--text-secondary);
}

[data-theme="dark"] .storage-tab:hover,
[data-theme="dark"] .storage-tab.active {
    color: var(--accent-color);
}

/* ============================================================
   Shared Storage Placeholder (shown when backend not configured)
   ============================================================ */

.shared-placeholder {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    text-align: center;
    padding: 2.5rem 1.5rem;
    color: var(--text-secondary);
    gap: 0.5rem;
}

.shared-placeholder-icon {
    font-size: 2.5rem;
    margin-bottom: 0.5rem;
    opacity: 0.6;
}

.shared-placeholder h3 {
    font-size: 1rem;
    font-weight: 600;
    color: var(--text-primary);
    margin: 0;
}

.shared-placeholder p {
    font-size: 0.875rem;
    color: var(--text-secondary);
    margin: 0;
    line-height: 1.5;
}

[data-theme="dark"] .shared-placeholder h3 {
    color: var(--text-primary);
}

/* ============================================================
   Collapsible Section Header dark mode fix
   The .vendor-section-header uses a hard-coded #f9fafb background
   in its inline style from index.html. Override it here for dark mode.
   ============================================================ */
[data-theme="dark"] .vendor-section-header {
    background-color: #4a4a52 !important;
    /* medium grey — clearly visible */
    border-color: var(--border-color) !important;
    color: #ffffff !important;
}

[data-theme="dark"] .vendor-section-header:hover {
    background-color: #55555e !important;
}

/* ============================================================
   Per-Tab Action Strip
   Sits between the user-bar (or tab strip) and the block list.
   Contains: [+ Add Block] [📂 Sections] — scoped to the active tab.
   ============================================================ */
.tab-actions {
    display: flex;
    gap: 0.5rem;
    padding: 0.5rem 1rem;
    border-bottom: 1px solid var(--border-color);
    background-color: var(--sidebar-bg);
    flex-shrink: 0;
}

.tab-action-btn {
    flex: 1;
    padding: 0.35rem 0.5rem;
    background: none;
    border: 1px solid var(--border-color);
    border-radius: 5px;
    font-family: inherit;
    font-size: 0.8rem;
    font-weight: 600;
    color: var(--text-secondary);
    cursor: pointer;
    transition: all 0.15s;
    white-space: nowrap;
}

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

[data-theme="dark"] .tab-actions {
    background-color: var(--sidebar-bg);
    border-color: var(--border-color);
}

[data-theme="dark"] .tab-action-btn {
    color: var(--text-secondary);
    border-color: var(--border-color);
}

[data-theme="dark"] .tab-action-btn:hover {
    background-color: var(--input-bg);
    color: var(--accent-color);
    border-color: var(--accent-color);
}

/* =============================================================================
 * AI Review — Phase 4
 * =========================================================================== */

/* Modal sizing */
.ai-review-modal-inner {
    max-width: 560px;
    width: 90%;
    max-height: 90vh;
    overflow-y: auto;
}

/* Upload zone */
.ai-upload-zone {
    border: 2px dashed var(--border-color);
    border-radius: 8px;
    padding: 2rem 1.5rem;
    text-align: center;
    transition: border-color 0.15s, background 0.15s;
    cursor: default;
}

.ai-upload-zone.drag-over {
    border-color: var(--accent-color);
    background: rgba(var(--accent-rgb, 192,0,0), 0.04);
}

/* Processing */
.ai-progress {
    display: flex;
    flex-direction: column;
    align-items: center;
    padding: 2.5rem 1rem;
}

.ai-spinner {
    width: 36px;
    height: 36px;
    border: 3px solid var(--border-color);
    border-top-color: var(--accent-color);
    border-radius: 50%;
    animation: ai-spin 0.8s linear infinite;
}

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

/* Results summary card */
.ai-results-card {
    background: var(--input-bg);
    border: 1px solid var(--border-color);
    border-radius: 6px;
    padding: 0.75rem 1rem;
}

/* Draft indicator badge on sidebar block items */
.ai-draft-badge {
    display: inline-block;
    font-size: 0.65rem;
    padding: 1px 5px;
    border-radius: 3px;
    background: rgba(var(--accent-rgb, 192,0,0), 0.12);
    color: var(--accent-color);
    margin-left: 0.35rem;
    vertical-align: middle;
    font-weight: 600;
    letter-spacing: 0.02em;
}

/* Dark mode overrides */
[data-theme="dark"] .ai-upload-zone {
    border-color: var(--border-color);
}

[data-theme="dark"] .ai-upload-zone.drag-over {
    border-color: var(--accent-color);
    background: rgba(255,255,255,0.04);
}

[data-theme="dark"] .ai-results-card {
    background: var(--sidebar-bg);
}