/* FrazierPDF - Professional Document Processing Suite
   Design System: Deep navy with warm amber accents (dark mode) / Clean light mode
   Typography: DM Sans (clean, professional, distinctive)
*/

:root {
    /* Typography */
    --font-sans: 'DM Sans', -apple-system, BlinkMacSystemFont, sans-serif;
    --font-mono: 'JetBrains Mono', 'SF Mono', Consolas, monospace;
    
    /* Spacing */
    --space-xs: 4px;
    --space-sm: 8px;
    --space-md: 16px;
    --space-lg: 24px;
    --space-xl: 32px;
    --space-2xl: 48px;
    
    /* Radius */
    --radius-sm: 6px;
    --radius-md: 10px;
    --radius-lg: 14px;
    --radius-xl: 20px;
    
    /* Transitions */
    --transition-fast: 150ms cubic-bezier(0.4, 0, 0.2, 1);
    --transition-base: 250ms cubic-bezier(0.4, 0, 0.2, 1);
    --transition-slow: 400ms cubic-bezier(0.4, 0, 0.2, 1);
    
    /* Sidebar */
    --sidebar-width: 260px;
}

/* ==================== DARK THEME (Default) ==================== */
[data-theme="dark"], :root {
    /* Color Palette - Deep Navy with Warm Amber */
    --color-bg-deep: #0a0e17;
    --color-bg-main: #0f1419;
    --color-bg-card: #161d27;
    --color-bg-elevated: #1c2533;
    --color-bg-hover: #232d3f;
    
    --color-border: rgba(255, 255, 255, 0.08);
    --color-border-subtle: rgba(255, 255, 255, 0.04);
    
    --color-text-primary: #f0f2f5;
    --color-text-secondary: #8b95a5;
    --color-text-muted: #5a6578;
    
    --color-accent: #e8a832;
    --color-accent-hover: #f0b840;
    --color-accent-glow: rgba(232, 168, 50, 0.15);
    --color-accent-subtle: rgba(232, 168, 50, 0.08);
    
    --color-success: #34d399;
    --color-error: #f87171;
    --color-info: #60a5fa;
    
    /* Shadows */
    --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.3);
    --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.4);
    --shadow-lg: 0 8px 24px rgba(0, 0, 0, 0.5);
    --shadow-glow: 0 0 40px var(--color-accent-glow);
}

/* ==================== LIGHT THEME ==================== */
[data-theme="light"] {
    /* Color Palette - Clean Light with Warm Amber */
    --color-bg-deep: #f8f9fa;
    --color-bg-main: #ffffff;
    --color-bg-card: #ffffff;
    --color-bg-elevated: #f3f4f6;
    --color-bg-hover: #e5e7eb;
    
    --color-border: rgba(0, 0, 0, 0.1);
    --color-border-subtle: rgba(0, 0, 0, 0.05);
    
    --color-text-primary: #1a1a2e;
    --color-text-secondary: #4a5568;
    --color-text-muted: #718096;
    
    --color-accent: #c78c1c;
    --color-accent-hover: #d49a24;
    --color-accent-glow: rgba(199, 140, 28, 0.2);
    --color-accent-subtle: rgba(199, 140, 28, 0.1);
    
    --color-success: #059669;
    --color-error: #dc2626;
    --color-info: #2563eb;
    
    /* Shadows */
    --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 8px 24px rgba(0, 0, 0, 0.15);
    --shadow-glow: 0 0 40px var(--color-accent-glow);
}

/* Reset & Base */
*, *::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: var(--font-sans);
    background: var(--color-bg-main);
    color: var(--color-text-primary);
    line-height: 1.6;
    min-height: 100vh;
    transition: background var(--transition-base), color var(--transition-base);
}

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

/* Sidebar */
.sidebar {
    width: var(--sidebar-width);
    background: var(--color-bg-deep);
    border-right: 1px solid var(--color-border);
    display: flex;
    flex-direction: column;
    position: fixed;
    height: 100vh;
    z-index: 100;
    transition: background var(--transition-base), border-color var(--transition-base);
}

[data-theme="light"] .sidebar {
    box-shadow: 2px 0 8px rgba(0, 0, 0, 0.05);
}

.sidebar-header {
    padding: var(--space-lg);
    border-bottom: 1px solid var(--color-border-subtle);
}

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

.logo-icon {
    width: 36px;
    height: 36px;
    color: var(--color-accent);
}

.logo-text {
    font-size: 1.25rem;
    font-weight: 600;
    letter-spacing: -0.02em;
}

.nav-menu {
    list-style: none;
    padding: var(--space-md);
    flex: 1;
}

.nav-item {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    padding: var(--space-md);
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: all var(--transition-fast);
    color: var(--color-text-secondary);
    margin-bottom: var(--space-xs);
    position: relative;
}

.nav-item:hover:not(.disabled) {
    background: var(--color-bg-hover);
    color: var(--color-text-primary);
}

.nav-item.active {
    background: var(--color-accent-subtle);
    color: var(--color-accent);
    font-weight: 500;
}

.nav-item.active::before {
    content: '';
    position: absolute;
    left: 0;
    top: 50%;
    transform: translateY(-50%);
    width: 3px;
    height: 24px;
    background: var(--color-accent);
    border-radius: 0 2px 2px 0;
}

.nav-item.disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

.nav-icon {
    width: 20px;
    height: 20px;
    flex-shrink: 0;
}

.badge {
    margin-left: auto;
    font-size: 0.65rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    padding: 2px 6px;
    background: var(--color-bg-elevated);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-sm);
    color: var(--color-text-muted);
}

.sidebar-footer {
    padding: var(--space-lg);
    border-top: 1px solid var(--color-border-subtle);
}

/* Theme Toggle Button */
.theme-toggle-container {
    padding: 0 var(--space-lg) var(--space-sm);
}

.theme-toggle-btn {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-xs);
    width: 100%;
    padding: var(--space-sm) var(--space-md);
    background: var(--color-bg-elevated);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-sm);
    color: var(--color-text-muted);
    font-family: var(--font-sans);
    font-size: 0.75rem;
    font-weight: 500;
    cursor: pointer;
    transition: all var(--transition-fast);
}

.theme-toggle-btn:hover {
    background: var(--color-bg-hover);
    color: var(--color-text-primary);
    border-color: var(--color-accent);
}

.theme-toggle-btn svg {
    width: 14px;
    height: 14px;
    transition: transform var(--transition-base);
}

.theme-toggle-btn:hover svg {
    transform: rotate(15deg);
}

.theme-icon-sun,
.theme-icon-moon {
    display: none;
}

[data-theme="dark"] .theme-icon-sun {
    display: block;
}

[data-theme="dark"] .theme-icon-moon {
    display: none;
}

[data-theme="light"] .theme-icon-sun {
    display: none;
}

[data-theme="light"] .theme-icon-moon {
    display: block;
}

.theme-label {
    flex: 1;
    text-align: left;
}

.version-info {
    font-size: 0.75rem;
    color: var(--color-text-muted);
    display: flex;
    align-items: center;
    gap: var(--space-sm);
}

.separator {
    opacity: 0.3;
}

/* Main Content */
.main-content {
    flex: 1;
    margin-left: var(--sidebar-width);
    padding: var(--space-2xl);
    min-height: 100vh;
    background: 
        radial-gradient(ellipse at 70% 10%, rgba(232, 168, 50, 0.03) 0%, transparent 50%),
        radial-gradient(ellipse at 20% 80%, rgba(96, 165, 250, 0.02) 0%, transparent 40%),
        var(--color-bg-main);
    transition: background var(--transition-base);
}

[data-theme="light"] .main-content {
    background: 
        radial-gradient(ellipse at 70% 10%, rgba(199, 140, 28, 0.05) 0%, transparent 50%),
        radial-gradient(ellipse at 20% 80%, rgba(37, 99, 235, 0.03) 0%, transparent 40%),
        var(--color-bg-main);
}

.content-header {
    margin-bottom: var(--space-2xl);
}

.header-title h1 {
    font-size: 1.875rem;
    font-weight: 600;
    letter-spacing: -0.02em;
    margin-bottom: var(--space-xs);
}

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

/* Tool Content */
.tool-content {
    max-width: 720px;
}

/* Upload Zone */
.upload-zone {
    border: 2px dashed var(--color-border);
    border-radius: var(--radius-xl);
    padding: var(--space-2xl);
    text-align: center;
    transition: all var(--transition-base), background var(--transition-base), border-color var(--transition-base);
    cursor: pointer;
    background: var(--color-bg-card);
    position: relative;
    overflow: hidden;
}

[data-theme="light"] .upload-zone {
    border-color: rgba(0, 0, 0, 0.15);
    box-shadow: var(--shadow-sm);
}

.upload-zone::before {
    content: '';
    position: absolute;
    inset: 0;
    background: linear-gradient(135deg, var(--color-accent-subtle), transparent);
    opacity: 0;
    transition: opacity var(--transition-base);
}

.upload-zone:hover,
.upload-zone.drag-over {
    border-color: var(--color-accent);
    background: var(--color-bg-elevated);
}

.upload-zone:hover::before,
.upload-zone.drag-over::before {
    opacity: 1;
}

.upload-zone.drag-over {
    transform: scale(1.01);
    box-shadow: var(--shadow-glow);
}

.upload-icon {
    width: 64px;
    height: 64px;
    margin: 0 auto var(--space-lg);
    color: var(--color-text-muted);
    transition: color var(--transition-base);
    position: relative;
    z-index: 1;
}

.upload-zone:hover .upload-icon,
.upload-zone.drag-over .upload-icon {
    color: var(--color-accent);
}

.upload-title {
    font-size: 1.125rem;
    font-weight: 500;
    margin-bottom: var(--space-xs);
    position: relative;
    z-index: 1;
}

.upload-subtitle {
    color: var(--color-text-muted);
    font-size: 0.875rem;
    margin-bottom: var(--space-lg);
    position: relative;
    z-index: 1;
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-sm);
    padding: var(--space-md) var(--space-lg);
    font-family: var(--font-sans);
    font-size: 0.9375rem;
    font-weight: 500;
    border-radius: var(--radius-md);
    border: none;
    cursor: pointer;
    transition: all var(--transition-fast);
    position: relative;
    z-index: 1;
}

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

.btn-primary {
    background: var(--color-accent);
    color: var(--color-bg-deep);
}

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

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

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

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

.btn-ghost {
    background: transparent;
    color: var(--color-text-secondary);
}

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

/* File List */
.file-list-container {
    margin-top: var(--space-lg);
    background: var(--color-bg-card);
    border-radius: var(--radius-lg);
    border: 1px solid var(--color-border);
    overflow: hidden;
    transition: background var(--transition-base), border-color var(--transition-base), box-shadow var(--transition-base);
}

[data-theme="light"] .file-list-container {
    box-shadow: var(--shadow-sm);
}

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

.file-list-header h3 {
    font-size: 0.875rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--color-text-secondary);
}

.file-count {
    font-size: 0.8125rem;
    color: var(--color-text-muted);
    font-family: var(--font-mono);
}

.file-list {
    max-height: 500px;
    overflow-y: auto;
}

.file-item {
    display: flex;
    align-items: center;
    gap: var(--space-md);
    padding: var(--space-md) var(--space-lg);
    border-bottom: 1px solid var(--color-border-subtle);
    transition: background var(--transition-fast);
    cursor: grab;
}

.file-item:last-child {
    border-bottom: none;
}

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

.file-item.dragging {
    background: var(--color-accent-subtle);
    box-shadow: var(--shadow-md);
    cursor: grabbing;
}

.file-drag-handle {
    color: var(--color-text-muted);
    cursor: grab;
    padding: var(--space-xs);
}

.file-drag-handle svg {
    width: 16px;
    height: 16px;
    display: block;
}

.file-icon {
    width: 40px;
    height: 40px;
    background: linear-gradient(135deg, #dc2626, #991b1b);
    border-radius: var(--radius-sm);
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.file-icon svg {
    width: 20px;
    height: 20px;
    color: white;
}

.file-info {
    flex: 1;
    min-width: 0;
}

.file-name {
    font-weight: 500;
    font-size: 0.9375rem;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.file-meta {
    display: flex;
    gap: var(--space-md);
    font-size: 0.8125rem;
    color: var(--color-text-muted);
    margin-top: 2px;
}

.file-remove {
    width: 32px;
    height: 32px;
    border: none;
    background: transparent;
    color: var(--color-text-muted);
    cursor: pointer;
    border-radius: var(--radius-sm);
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all var(--transition-fast);
}

.file-remove:hover {
    background: rgba(248, 113, 113, 0.1);
    color: var(--color-error);
}

.file-remove svg {
    width: 18px;
    height: 18px;
}

.drag-hint {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-sm);
    padding: var(--space-md);
    font-size: 0.8125rem;
    color: var(--color-text-muted);
    background: var(--color-bg-elevated);
    border-top: 1px solid var(--color-border);
}

.drag-hint svg {
    width: 14px;
    height: 14px;
}

/* Output Settings */
.output-settings {
    margin-top: var(--space-lg);
    padding: var(--space-lg);
    background: var(--color-bg-card);
    border-radius: var(--radius-lg);
    border: 1px solid var(--color-border);
    transition: background var(--transition-base), border-color var(--transition-base), box-shadow var(--transition-base);
}

[data-theme="light"] .output-settings {
    box-shadow: var(--shadow-sm);
}

.output-settings h3 {
    font-size: 0.875rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--color-text-secondary);
    margin-bottom: var(--space-md);
}

.settings-grid {
    display: grid;
    gap: var(--space-md);
}

.form-group {
    display: flex;
    flex-direction: column;
    gap: var(--space-xs);
}

.form-group label {
    font-size: 0.875rem;
    color: var(--color-text-secondary);
}

.input-with-suffix {
    display: flex;
    align-items: center;
    background: var(--color-bg-elevated);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    overflow: hidden;
    transition: border-color var(--transition-fast);
}

.input-with-suffix:focus-within {
    border-color: var(--color-accent);
}

.input-with-suffix input {
    flex: 1;
    padding: var(--space-md);
    background: transparent;
    border: none;
    color: var(--color-text-primary);
    font-family: var(--font-mono);
    font-size: 0.9375rem;
    outline: none;
}

.input-with-suffix input::placeholder {
    color: var(--color-text-muted);
}

.input-with-suffix .suffix {
    padding: var(--space-md);
    background: var(--color-bg-hover);
    color: var(--color-text-muted);
    font-family: var(--font-mono);
    font-size: 0.9375rem;
    border-left: 1px solid var(--color-border);
}

/* Action Bar */
.action-bar {
    display: flex;
    gap: var(--space-md);
    margin-top: var(--space-lg);
    padding-top: var(--space-lg);
    border-top: 1px solid var(--color-border);
}

.action-bar .btn:last-child {
    margin-left: auto;
}

/* Status Container */
.status-container {
    margin-top: var(--space-lg);
}

.status-message {
    display: flex;
    align-items: center;
    gap: var(--space-md);
    padding: var(--space-md) var(--space-lg);
    border-radius: var(--radius-md);
    font-size: 0.9375rem;
}

.status-message.success {
    background: rgba(52, 211, 153, 0.1);
    border: 1px solid rgba(52, 211, 153, 0.3);
    color: var(--color-success);
}

.status-message.error {
    background: rgba(248, 113, 113, 0.1);
    border: 1px solid rgba(248, 113, 113, 0.3);
    color: var(--color-error);
}

.status-message.info {
    background: rgba(96, 165, 250, 0.1);
    border: 1px solid rgba(96, 165, 250, 0.3);
    color: var(--color-info);
}

.status-icon {
    width: 20px;
    height: 20px;
    flex-shrink: 0;
}

/* Loading Overlay */
.loading-overlay {
    position: fixed;
    inset: 0;
    background: rgba(10, 14, 23, 0.85);
    backdrop-filter: blur(4px);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 1000;
}

[data-theme="light"] .loading-overlay {
    background: rgba(255, 255, 255, 0.9);
}

.loading-content {
    text-align: center;
}

.loading-spinner {
    width: 48px;
    height: 48px;
    border: 3px solid var(--color-border);
    border-top-color: var(--color-accent);
    border-radius: 50%;
    animation: spin 1s linear infinite;
    margin: 0 auto var(--space-lg);
}

.loading-content p {
    color: var(--color-text-secondary);
    font-size: 1rem;
}

.loading-spinner.costar-spinner {
    border-top-color: var(--color-costar);
}

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

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

::-webkit-scrollbar-track {
    background: var(--color-bg-elevated);
}

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

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

/* Tool Panels */
.tool-panel {
    display: none;
}

.tool-panel.active {
    display: block;
    animation: fadeIn 0.3s ease;
}

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

/* Info Box */
.info-box {
    display: flex;
    gap: var(--space-md);
    padding: var(--space-md) var(--space-lg);
    background: rgba(96, 165, 250, 0.08);
    border: 1px solid rgba(96, 165, 250, 0.2);
    border-radius: var(--radius-md);
    margin-bottom: var(--space-lg);
    font-size: 0.875rem;
    color: var(--color-text-secondary);
}

.info-box .info-icon {
    width: 20px;
    height: 20px;
    flex-shrink: 0;
    color: var(--color-info);
}

.info-box .info-content strong {
    color: var(--color-text-primary);
}

/* Preview Panel */
.preview-panel {
    margin-top: var(--space-lg);
    background: var(--color-bg-card);
    border-radius: var(--radius-lg);
    border: 1px solid var(--color-border);
    overflow: hidden;
    transition: background var(--transition-base), border-color var(--transition-base), box-shadow var(--transition-base);
}

[data-theme="light"] .preview-panel {
    box-shadow: var(--shadow-sm);
}

.preview-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: var(--space-md);
    padding: var(--space-md) var(--space-lg);
    border-bottom: 1px solid var(--color-border);
    background: var(--color-bg-elevated);
    flex-wrap: wrap;
}

.preview-header h3 {
    font-size: 0.875rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--color-text-secondary);
    flex-shrink: 0;
}

.btn-sm {
    padding: var(--space-sm) var(--space-md);
    font-size: 0.8125rem;
}

.preview-grid {
    padding: var(--space-lg);
    max-height: 400px;
    overflow-y: auto;
}

.preview-item {
    margin-bottom: var(--space-lg);
    padding-bottom: var(--space-lg);
    border-bottom: 1px solid var(--color-border-subtle);
}

.preview-item:last-child {
    margin-bottom: 0;
    padding-bottom: 0;
    border-bottom: none;
}

.preview-item-header {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    margin-bottom: var(--space-md);
}

.preview-item-title {
    font-weight: 600;
    font-size: 0.9375rem;
    color: var(--color-text-primary);
}

.preview-item-badge {
    font-size: 0.75rem;
    padding: 2px 8px;
    background: var(--color-accent-subtle);
    color: var(--color-accent);
    border-radius: var(--radius-sm);
    font-family: var(--font-mono);
}

.preview-fields {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
    gap: var(--space-md);
}

.preview-field {
    background: var(--color-bg-elevated);
    padding: var(--space-md);
    border-radius: var(--radius-sm);
    border: 1px solid var(--color-border-subtle);
}

.preview-field-label {
    font-size: 0.75rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--color-text-muted);
    margin-bottom: var(--space-xs);
}

.preview-field-value {
    font-size: 0.875rem;
    color: var(--color-text-primary);
    word-break: break-word;
}

.preview-field-value.empty {
    color: var(--color-text-muted);
    font-style: italic;
}

.preview-field-value.money {
    font-family: var(--font-mono);
    color: var(--color-success);
}

/* Editable Preview Fields */
.preview-field-input {
    width: 100%;
    padding: var(--space-sm);
    background: var(--color-bg-card);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-sm);
    color: var(--color-text-primary);
    font-family: var(--font-sans);
    font-size: 0.875rem;
    transition: all var(--transition-fast);
    outline: none;
}

.preview-field-input:hover {
    border-color: var(--color-text-muted);
    background: var(--color-bg-hover);
}

.preview-field-input:focus {
    border-color: var(--color-accent);
    background: var(--color-bg-hover);
    box-shadow: 0 0 0 2px var(--color-accent-subtle);
}

.preview-field-input::placeholder {
    color: var(--color-text-muted);
    font-style: italic;
}

.preview-field-input.money {
    font-family: var(--font-mono);
    color: var(--color-success);
}

.preview-field-input.money:focus {
    color: var(--color-text-primary);
}

.preview-field-wide {
    grid-column: span 2;
}

/* Editable badge */
.editable-badge {
    display: inline-flex;
    align-items: center;
    gap: 4px;
    background: var(--color-accent-subtle) !important;
    color: var(--color-accent) !important;
}

.editable-badge svg {
    opacity: 0.8;
}

/* Invoice Preview panel header adjustment */
.preview-header .edit-hint {
    flex: 1;
    font-size: 0.8125rem;
    color: var(--color-text-muted);
    text-align: right;
    margin-right: var(--space-sm);
}

@media (max-width: 768px) {
    .preview-field-wide {
        grid-column: span 1;
    }
}

/* Excel Icon Color */
.file-icon.excel {
    background: linear-gradient(135deg, #217346, #185c37);
}

/* Invoice file item (no drag) */
.file-item.no-drag {
    cursor: default;
}

.file-item.no-drag .file-drag-handle {
    display: none;
}

/* ==================== COSTAR STYLES ==================== */
:root {
    --color-costar: #217346;
    --color-costar-hover: #2a8f57;
    --color-costar-subtle: rgba(33, 115, 70, 0.1);
    --color-costar-glow: rgba(33, 115, 70, 0.2);
}

.info-box-costar {
    background: var(--color-costar-subtle);
    border-color: rgba(33, 115, 70, 0.3);
}

.info-box-costar .info-icon {
    color: var(--color-costar);
}

.upload-zone-costar:hover,
.upload-zone-costar.drag-over {
    border-color: var(--color-costar);
}

.upload-zone-costar:hover::before,
.upload-zone-costar.drag-over::before {
    background: linear-gradient(135deg, var(--color-costar-subtle), transparent);
}

.upload-zone-costar:hover .upload-icon,
.upload-zone-costar.drag-over .upload-icon {
    color: var(--color-costar);
}

.btn-costar {
    border-color: var(--color-costar);
}

.btn-costar:hover {
    background: var(--color-costar-subtle);
    border-color: var(--color-costar);
}

.btn-costar-export {
    background: var(--color-costar);
    color: white;
}

.btn-costar-export:hover {
    background: var(--color-costar-hover);
    box-shadow: 0 0 20px var(--color-costar-glow);
}

/* Property Type Toggle */
.property-type-group {
    display: flex;
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    overflow: hidden;
    width: fit-content;
}

.property-type-btn {
    cursor: pointer;
    margin: 0;
}

.property-type-btn input[type="radio"] {
    position: absolute;
    opacity: 0;
    pointer-events: none;
}

.property-type-btn span {
    display: block;
    padding: 0.5rem 1.25rem;
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--color-text-secondary);
    background: var(--color-bg-secondary);
    border-right: 1px solid var(--color-border);
    transition: background 0.15s, color 0.15s;
    user-select: none;
}

.property-type-btn:last-child span {
    border-right: none;
}

.property-type-btn:hover span {
    background: var(--color-costar-subtle);
    color: var(--color-text-primary);
}

.property-type-btn input[type="radio"]:checked + span {
    background: var(--color-costar);
    color: #fff;
    font-weight: 600;
}

#tool-costar .tool-content {
    max-width: 960px;
}

/* CoStar property type + extended data row */
.costar-type-row {
    display: flex;
    align-items: center;
    gap: var(--space-lg);
    flex-wrap: wrap;
}

.costar-toggle-group {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
}

.costar-toggle-group .toggle-switch input:checked + .toggle-slider {
    background-color: var(--color-costar-subtle);
    border-color: var(--color-costar);
}

.costar-toggle-group .toggle-switch input:checked + .toggle-slider:before {
    background-color: var(--color-costar);
}

.extended-data-info-panel {
    margin-bottom: var(--space-lg);
    background: var(--color-bg-card);
    border: 1px solid var(--color-costar);
    border-radius: var(--radius-lg);
    overflow: hidden;
    animation: slideDown 0.3s ease;
}

.extended-data-info-panel .info-panel-header {
    background: linear-gradient(135deg, var(--color-costar-subtle), transparent);
}

.extended-data-info-panel .info-panel-header h4 {
    color: var(--color-costar);
}

.extended-data-info-panel .info-panel-content {
    padding: var(--space-md) var(--space-lg);
    font-size: 0.875rem;
    line-height: 1.6;
    color: var(--color-text-secondary);
}

.extended-data-info-panel .info-panel-content ul {
    margin: var(--space-sm) 0 0;
    padding-left: var(--space-lg);
}

.extended-data-info-panel .info-panel-content li {
    margin-bottom: var(--space-xs);
}

/* CoStar Preview Panel */
.costar-preview .preview-header {
    background: linear-gradient(135deg, #185c37, #217346);
}

.costar-preview .preview-header h3 {
    color: white;
}

.costar-preview .preview-header .btn {
    color: white;
}

.costar-preview-content {
    padding: var(--space-lg);
    max-height: 800px;
    overflow-y: auto;
}

.costar-summary h4,
.costar-comps h4 {
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--color-text-secondary);
    margin-bottom: var(--space-md);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.comp-count {
    font-weight: 400;
    color: var(--color-text-muted);
    text-transform: none;
    letter-spacing: normal;
}

/* Summary Cards */
.summary-cards {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: var(--space-md);
    margin-bottom: var(--space-xl);
}

.summary-card {
    background: var(--color-bg-elevated);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    padding: var(--space-md);
}

.summary-card-title {
    font-size: 0.75rem;
    color: var(--color-text-muted);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin-bottom: var(--space-sm);
}

.summary-card-value {
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--color-costar);
    font-family: var(--font-mono);
    white-space: nowrap;
}

.summary-card-detail {
    font-size: 0.75rem;
    color: var(--color-text-muted);
    margin-top: var(--space-xs);
}

/* Summary Stats Table */
.summary-stats-table {
    width: 100%;
    border-collapse: collapse;
    font-size: 0.875rem;
    margin-bottom: var(--space-xl);
}

.summary-stats-table th,
.summary-stats-table td {
    padding: var(--space-sm) var(--space-md);
    text-align: left;
    border-bottom: 1px solid var(--color-border-subtle);
}

.summary-stats-table th {
    font-weight: 600;
    color: var(--color-text-secondary);
    font-size: 0.75rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    background: var(--color-bg-elevated);
}

.summary-stats-table td {
    color: var(--color-text-primary);
}

.summary-stats-table td.money {
    font-family: var(--font-mono);
    color: var(--color-costar);
}

.summary-stats-table tr:nth-child(even) {
    background: var(--color-bg-elevated);
}

/* Comps Table */
.comps-table-wrapper {
    overflow-x: auto;
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
}

.comps-table {
    width: 100%;
    border-collapse: collapse;
    font-size: 0.8125rem;
    min-width: 600px;
}

.comps-table th,
.comps-table td {
    padding: var(--space-sm) var(--space-md);
    text-align: left;
    border-bottom: 1px solid var(--color-border-subtle);
    white-space: nowrap;
}

.comps-table th {
    font-weight: 600;
    color: white;
    font-size: 0.75rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    background: var(--color-costar);
    position: sticky;
    top: 0;
}

.comps-table td {
    color: var(--color-text-primary);
}

.comps-table td.address {
    max-width: 200px;
    overflow: hidden;
    text-overflow: ellipsis;
}

.comps-table td.rent {
    font-family: var(--font-mono);
    color: var(--color-costar);
}

.comps-table tr:nth-child(even) {
    background: var(--color-bg-elevated);
}

.comps-table tr:hover {
    background: var(--color-costar-subtle);
}

/* File icon for CoStar */
.file-icon.costar {
    background: linear-gradient(135deg, #217346, #185c37);
}

/* ==================== APPRAISAL REPORT MODE STYLES ==================== */

/* Mode Toggle Container */
.mode-toggle-container {
    margin-bottom: var(--space-lg);
    padding: var(--space-md) var(--space-lg);
    background: var(--color-bg-card);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    transition: background var(--transition-base), border-color var(--transition-base), box-shadow var(--transition-base);
}

[data-theme="light"] .mode-toggle-container {
    box-shadow: var(--shadow-sm);
}

.mode-toggle {
    display: flex;
    align-items: center;
    gap: var(--space-md);
}

/* Toggle Switch */
.toggle-switch {
    position: relative;
    display: inline-block;
    width: 48px;
    height: 26px;
    flex-shrink: 0;
}

.toggle-switch input {
    opacity: 0;
    width: 0;
    height: 0;
}

.toggle-slider {
    position: absolute;
    cursor: pointer;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background-color: var(--color-bg-elevated);
    border: 1px solid var(--color-border);
    border-radius: 26px;
    transition: all var(--transition-base);
}

.toggle-slider:before {
    position: absolute;
    content: "";
    height: 18px;
    width: 18px;
    left: 3px;
    bottom: 3px;
    background-color: var(--color-text-muted);
    border-radius: 50%;
    transition: all var(--transition-base);
}

.toggle-switch input:checked + .toggle-slider {
    background-color: var(--color-accent-subtle);
    border-color: var(--color-accent);
}

.toggle-switch input:checked + .toggle-slider:before {
    transform: translateX(22px);
    background-color: var(--color-accent);
}

.toggle-label {
    flex: 1;
}

.toggle-title {
    display: block;
    font-weight: 500;
    font-size: 0.9375rem;
    color: var(--color-text-primary);
}

.toggle-subtitle {
    display: block;
    font-size: 0.8125rem;
    color: var(--color-text-muted);
    margin-top: 2px;
}

.info-btn {
    padding: var(--space-sm);
    color: var(--color-text-muted);
}

.info-btn:hover {
    color: var(--color-accent);
}

/* Appraisal Info Panel */
.appraisal-info-panel {
    margin-bottom: var(--space-lg);
    background: var(--color-bg-card);
    border: 1px solid var(--color-accent);
    border-radius: var(--radius-lg);
    overflow: hidden;
    animation: slideDown 0.3s ease;
}

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

.info-panel-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--space-md) var(--space-lg);
    background: linear-gradient(135deg, var(--color-accent-subtle), transparent);
    border-bottom: 1px solid var(--color-border);
}

.info-panel-header h4 {
    font-size: 0.9375rem;
    font-weight: 600;
    color: var(--color-accent);
    margin: 0;
}

.toc-categories {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(180px, 1fr));
    gap: var(--space-md);
    padding: var(--space-lg);
}

.toc-category h5 {
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--color-text-secondary);
    margin-bottom: var(--space-sm);
    padding-bottom: var(--space-xs);
    border-bottom: 1px solid var(--color-border-subtle);
}

.toc-category ul {
    list-style: none;
    padding: 0;
    margin: 0;
}

.toc-category li {
    font-size: 0.8125rem;
    color: var(--color-text-muted);
    padding: var(--space-xs) 0;
    padding-left: var(--space-sm);
    position: relative;
}

.toc-category li::before {
    content: '•';
    position: absolute;
    left: 0;
    color: var(--color-accent);
}

/* File List Header Actions */
.file-list-actions {
    display: flex;
    align-items: center;
    gap: var(--space-md);
}

#autoSortBtn {
    color: var(--color-accent);
    border: 1px solid var(--color-accent);
    background: transparent;
}

#autoSortBtn:hover {
    background: var(--color-accent-subtle);
}

/* Classification Preview Panel */
.classification-preview {
    margin-top: var(--space-lg);
    background: var(--color-bg-card);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    overflow: hidden;
    max-width: 100%;
}

.classification-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--space-md) var(--space-lg);
    background: var(--color-bg-elevated);
    border-bottom: 1px solid var(--color-border);
    min-width: 0;
    overflow: hidden;
}

.classification-header h4 {
    font-size: 0.875rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--color-text-secondary);
    margin: 0;
}

.classification-stats {
    display: flex;
    gap: var(--space-md);
}

.classification-stats .stat {
    font-size: 0.75rem;
    font-family: var(--font-mono);
    padding: 2px 8px;
    border-radius: var(--radius-sm);
}

.classification-stats .stat.classified {
    background: rgba(52, 211, 153, 0.1);
    color: var(--color-success);
}

.classification-stats .stat.unclassified {
    background: rgba(248, 113, 113, 0.1);
    color: var(--color-error);
}

.classification-list {
    padding: var(--space-lg);
    max-height: 300px;
    overflow-y: auto;
    overflow-x: hidden;
}

.classification-category {
    margin-bottom: var(--space-lg);
    min-width: 0;
    overflow: hidden;
}

.classification-category:last-child {
    margin-bottom: 0;
}

.classification-category .category-name {
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--color-accent);
    margin-bottom: var(--space-sm);
    padding-bottom: var(--space-xs);
    border-bottom: 1px solid var(--color-border-subtle);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.category-items {
    list-style: none;
    padding: 0;
    margin: 0;
}

.classification-item {
    display: flex;
    align-items: center;
    gap: var(--space-md);
    padding: var(--space-sm) var(--space-md);
    border-radius: var(--radius-sm);
    margin-bottom: var(--space-xs);
    background: var(--color-bg-elevated);
    border-left: 3px solid transparent;
    min-width: 0;
    overflow: hidden;
    transition: background 0.3s ease;
}

.classification-item.swap-highlight {
    animation: swap-flash 0.6s ease;
}

@keyframes swap-flash {
    0%   { background: var(--color-accent-subtle); }
    100% { background: var(--color-bg-elevated); }
}

.classification-item.high {
    border-left-color: var(--color-success);
}

.classification-item.medium {
    border-left-color: var(--color-accent);
}

.classification-item.low {
    border-left-color: var(--color-error);
}

.classification-item .item-filename {
    flex: 1;
    font-size: 0.8125rem;
    color: var(--color-text-primary);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.classification-item .item-section {
    font-size: 0.75rem;
    color: var(--color-text-muted);
    background: var(--color-bg-hover);
    padding: 2px 6px;
    border-radius: var(--radius-sm);
}

.classification-item .item-page-range {
    font-size: 0.65rem;
    font-family: var(--font-mono);
    font-weight: 600;
    color: var(--color-accent);
    background: var(--color-accent-subtle);
    padding: 2px 6px;
    border-radius: var(--radius-sm);
    white-space: nowrap;
    flex-shrink: 0;
}

.classification-item .item-confidence {
    font-size: 0.75rem;
    font-family: var(--font-mono);
    color: var(--color-text-muted);
    min-width: 35px;
    text-align: right;
}

/* File Item with Classification Badge */
.file-item .classification-badge {
    font-size: 0.65rem;
    font-weight: 500;
    text-transform: uppercase;
    letter-spacing: 0.03em;
    padding: 2px 6px;
    border-radius: var(--radius-sm);
    background: var(--color-accent-subtle);
    color: var(--color-accent);
    margin-left: auto;
    margin-right: var(--space-sm);
    max-width: 120px;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

/* File Group Headers (Appraisal Mode) */
.file-group-header {
    display: flex;
    align-items: center;
    padding: var(--space-sm) var(--space-lg);
    font-size: 0.7rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.06em;
    color: var(--color-accent);
    background: linear-gradient(135deg, var(--color-accent-subtle), transparent);
    border-bottom: 1px solid var(--color-border-subtle);
    border-top: 1px solid var(--color-border-subtle);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.file-group-header.unclassified {
    color: var(--color-text-muted);
    background: var(--color-bg-elevated);
}

/* Empty appraisal section — drop target when 0 files */
.file-category-empty {
    min-height: 2.5rem;
    margin: 0 var(--space-lg) var(--space-sm);
    padding: var(--space-sm) var(--space-md);
    border: 1px dashed var(--color-border);
    border-radius: var(--radius-md);
    background: var(--color-bg-base);
    display: flex;
    align-items: center;
    justify-content: center;
    transition: border-color var(--transition-fast), background var(--transition-fast);
}

.file-category-empty:hover {
    border-color: var(--color-accent);
    background: var(--color-accent-subtle);
}

.file-category-empty-hint {
    font-size: 0.75rem;
    color: var(--color-text-muted);
    text-align: center;
}

/* Page Range Tag */
.page-range-tag {
    display: inline-flex;
    align-items: center;
    padding: 2px 8px;
    font-size: 0.65rem;
    font-weight: 600;
    font-family: var(--font-mono);
    color: var(--color-accent);
    background: var(--color-accent-subtle);
    border-radius: var(--radius-sm);
    white-space: nowrap;
    flex-shrink: 0;
}

/* Swap Pages Panel */
.swap-pages-panel {
    display: block;
    padding: var(--space-md);
    background: var(--color-bg-elevated);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-md);
    margin-top: var(--space-sm);
}

.swap-panel-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: var(--space-sm);
}

.swap-label {
    font-size: 0.75rem;
    font-weight: 600;
    color: var(--color-text-secondary);
    white-space: nowrap;
}

.swap-total {
    font-size: 0.7rem;
    color: var(--color-text-muted);
    white-space: nowrap;
}

.swap-rows {
    display: flex;
    flex-direction: column;
    gap: var(--space-xs);
}

.swap-row {
    display: flex;
    align-items: center;
    gap: var(--space-xs);
    padding: 4px 6px;
    border-radius: var(--radius-sm);
    transition: background 0.3s ease, border-color 0.3s ease;
    border: 1px solid transparent;
}

.swap-row-success {
    background: color-mix(in srgb, var(--color-success) 10%, transparent);
    border-color: var(--color-success);
}

.swap-row-error {
    background: color-mix(in srgb, var(--color-error) 10%, transparent);
    border-color: var(--color-error);
}

.swap-input {
    width: 56px;
    padding: 4px 8px;
    font-size: 0.8rem;
    font-family: var(--font-mono);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-sm);
    background: var(--color-bg-base);
    color: var(--color-text-primary);
    text-align: center;
    -moz-appearance: textfield;
}

.swap-input::-webkit-outer-spin-button,
.swap-input::-webkit-inner-spin-button {
    -webkit-appearance: none;
    margin: 0;
}

.swap-input:focus {
    outline: none;
    border-color: var(--color-accent);
    box-shadow: 0 0 0 2px var(--color-accent-subtle);
}

.swap-arrow {
    display: flex;
    align-items: center;
    color: var(--color-text-muted);
    flex-shrink: 0;
}

.swap-arrow svg {
    width: 16px;
    height: 16px;
}

.swap-row-remove {
    display: flex;
    align-items: center;
    justify-content: center;
    background: none;
    border: none;
    color: var(--color-text-muted);
    cursor: pointer;
    padding: 2px;
    border-radius: var(--radius-sm);
    transition: color var(--transition-fast), background var(--transition-fast);
    flex-shrink: 0;
    opacity: 0.5;
}

.swap-row-remove:hover {
    color: var(--color-error);
    background: var(--color-bg-hover);
    opacity: 1;
}

.swap-panel-actions {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    margin-top: var(--space-sm);
    flex-wrap: wrap;
}

.swap-panel-feedback {
    margin-top: var(--space-md);
    padding: var(--space-sm) var(--space-md);
    border-radius: var(--radius-md);
    font-size: 0.8125rem;
    font-weight: 600;
    line-height: 1.45;
}

.swap-panel-feedback[hidden] {
    display: none !important;
}

.swap-panel-feedback--success {
    color: var(--color-success);
    background: color-mix(in srgb, var(--color-success) 14%, transparent);
    border: 1px solid color-mix(in srgb, var(--color-success) 40%, transparent);
}

.swap-panel-feedback--error {
    color: var(--color-error);
    background: color-mix(in srgb, var(--color-error) 12%, transparent);
    border: 1px solid color-mix(in srgb, var(--color-error) 35%, transparent);
}

.swap-panel-feedback--info {
    color: var(--color-text-secondary);
    background: var(--color-bg-base);
    border: 1px solid var(--color-border);
}

/* Confirm Dialog */
.confirm-overlay {
    position: fixed;
    inset: 0;
    z-index: 1100;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(0, 0, 0, 0.5);
    backdrop-filter: blur(3px);
    opacity: 0;
    visibility: hidden;
    transition: opacity 0.2s ease, visibility 0.2s ease;
}

.confirm-overlay.active {
    opacity: 1;
    visibility: visible;
}

.confirm-dialog {
    background: var(--color-bg-card);
    border: 1px solid var(--color-border);
    border-radius: var(--radius-lg);
    padding: var(--space-xl);
    max-width: 34rem;
    width: 90%;
    box-shadow: 0 16px 40px rgba(0, 0, 0, 0.3);
    transform: scale(0.95);
    transition: transform 0.2s ease;
}

.confirm-overlay.active .confirm-dialog {
    transform: scale(1);
}

.confirm-message {
    font-size: 1.3125rem;
    line-height: 1.45;
    color: var(--color-text-primary);
    margin: 0 0 var(--space-xl) 0;
}

.confirm-message strong {
    font-weight: 600;
}

.confirm-actions {
    display: flex;
    justify-content: flex-end;
    gap: var(--space-md);
}

.confirm-actions .btn {
    font-size: 1rem;
    padding: 0.5rem 1rem;
}

/* PDF Viewer Modal */
.pdf-viewer-overlay {
    position: fixed;
    inset: 0;
    z-index: 1000;
    display: flex;
    align-items: center;
    justify-content: center;
    background: rgba(0, 0, 0, 0.6);
    backdrop-filter: blur(4px);
    opacity: 0;
    visibility: hidden;
    transition: opacity 0.25s ease, visibility 0.25s ease;
}

.pdf-viewer-overlay.active {
    opacity: 1;
    visibility: visible;
}

.pdf-viewer-modal {
    width: 90vw;
    height: 90vh;
    max-width: 1100px;
    background: var(--color-bg-card);
    border-radius: var(--radius-lg);
    box-shadow: 0 25px 60px rgba(0, 0, 0, 0.4);
    display: flex;
    flex-direction: column;
    overflow: hidden;
    transform: scale(0.95) translateY(10px);
    transition: transform 0.25s ease;
}

.pdf-viewer-overlay.active .pdf-viewer-modal {
    transform: scale(1) translateY(0);
}

.pdf-viewer-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--space-md) var(--space-lg);
    background: var(--color-bg-elevated);
    border-bottom: 1px solid var(--color-border);
    flex-shrink: 0;
}

.pdf-viewer-title {
    font-size: 0.9375rem;
    font-weight: 600;
    color: var(--color-text-primary);
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    min-width: 0;
    flex: 1;
}

.pdf-viewer-close {
    background: none;
    border: none;
    color: var(--color-text-muted);
    cursor: pointer;
    padding: var(--space-xs);
    border-radius: var(--radius-sm);
    transition: color var(--transition-fast), background var(--transition-fast);
    flex-shrink: 0;
    margin-left: var(--space-md);
}

.pdf-viewer-close svg {
    width: 20px;
    height: 20px;
    display: block;
}

.pdf-viewer-close:hover {
    color: var(--color-error);
    background: var(--color-bg-hover);
}

.pdf-viewer-body {
    flex: 1;
    min-height: 0;
}

.pdf-viewer-body iframe {
    width: 100%;
    height: 100%;
    border: none;
    background: var(--color-bg-base);
}

/* Preview link in status messages */
.status-preview-link {
    color: inherit;
    font-weight: 600;
    text-decoration: underline;
    cursor: pointer;
}

.status-preview-link:hover {
    opacity: 0.8;
}

/* Clickable file items in merge list */
.file-item.clickable {
    cursor: pointer;
}

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

/* Drag-and-drop indicator */
.drop-indicator {
    height: 3px;
    background: var(--color-accent);
    border-radius: 2px;
    margin: 0 var(--space-md);
    pointer-events: none;
    animation: drop-pulse 0.8s ease-in-out infinite alternate;
}

@keyframes drop-pulse {
    from { opacity: 0.6; }
    to   { opacity: 1; }
}

.file-item.dragging {
    opacity: 0.4;
}

/* Responsive */
@media (max-width: 768px) {
    .sidebar {
        width: 100%;
        height: auto;
        position: relative;
    }
    
    .main-content {
        margin-left: 0;
        padding: var(--space-lg);
    }
    
    .action-bar {
        flex-wrap: wrap;
    }
    
    .action-bar .btn:last-child {
        width: 100%;
        margin-left: 0;
        margin-top: var(--space-md);
    }
    
    .preview-fields {
        grid-template-columns: 1fr;
    }
}

/* ==================== MLS STYLES ==================== */
:root {
    --color-mls: #2563eb;
    --color-mls-hover: #1d4ed8;
    --color-mls-subtle: rgba(37, 99, 235, 0.1);
    --color-mls-glow: rgba(37, 99, 235, 0.2);
}

.info-box-mls {
    background: var(--color-mls-subtle);
    border-color: rgba(37, 99, 235, 0.3);
}

.info-box-mls .info-icon {
    color: var(--color-mls);
}

.upload-zone-mls:hover,
.upload-zone-mls.drag-over {
    border-color: var(--color-mls);
}

.upload-zone-mls:hover::before,
.upload-zone-mls.drag-over::before {
    background: linear-gradient(135deg, var(--color-mls-subtle), transparent);
}

.upload-zone-mls:hover .upload-icon,
.upload-zone-mls.drag-over .upload-icon {
    color: var(--color-mls);
}

.btn-mls {
    border-color: var(--color-mls);
}

.btn-mls:hover {
    background: var(--color-mls-subtle);
    border-color: var(--color-mls);
}

.btn-mls-export {
    background: var(--color-mls);
    color: white;
}

.btn-mls-export:hover {
    background: var(--color-mls-hover);
    box-shadow: 0 0 20px var(--color-mls-glow);
}

#tool-mls .tool-content {
    max-width: 960px;
}

/* MLS Preview Panel */
.mls-preview .preview-header {
    background: linear-gradient(135deg, #1e40af, #2563eb);
}

.mls-preview .preview-header h3 {
    color: white;
}

.mls-preview .preview-header .btn {
    color: white;
}

.mls-preview-content {
    padding: var(--space-lg);
    max-height: 800px;
    overflow-y: auto;
}

.mls-summary h4,
.mls-comps h4 {
    font-size: 0.875rem;
    font-weight: 600;
    color: var(--color-text-secondary);
    margin-bottom: var(--space-md);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

/* Override summary card value color for MLS (blue instead of green) */
.mls-preview .summary-card-value {
    color: var(--color-mls);
}

.mls-preview .summary-card-value.mls-subject-value {
    font-size: 0.95rem;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    max-width: 100%;
    display: block;
}

/* MLS comps table header override (blue) */
.mls-preview .comps-table th {
    background: var(--color-mls);
}

.mls-preview .comps-table td.rent {
    color: var(--color-mls);
}

.mls-preview .comps-table tr:hover {
    background: var(--color-mls-subtle);
}

/* MLS file list subject designation */
.mls-hint {
    font-size: 0.8rem;
    color: var(--color-text-muted);
    font-style: italic;
}

.mls-star-btn {
    background: none;
    border: none;
    cursor: pointer;
    padding: 4px;
    color: var(--color-text-muted);
    transition: color var(--transition-fast), transform var(--transition-fast);
    flex-shrink: 0;
}

.mls-star-btn svg {
    width: 20px;
    height: 20px;
    display: block;
}

.mls-star-btn:hover {
    color: #e8b931;
    transform: scale(1.15);
}

.mls-star-btn.active {
    color: #e8b931;
}

.mls-subject-file {
    background: rgba(37, 99, 235, 0.05);
    border-left: 3px solid var(--color-mls);
}

.mls-role-label {
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.03em;
}

.mls-subject-file .mls-role-label {
    color: var(--color-mls);
}

/* MLS preview table role badges */
.mls-role-badge {
    display: inline-block;
    padding: 2px 8px;
    border-radius: var(--radius-sm);
    font-size: 0.7rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.04em;
}

.mls-role-badge.subject {
    background: var(--color-mls-subtle);
    color: var(--color-mls);
    border: 1px solid rgba(37, 99, 235, 0.3);
}

.mls-role-badge.comp {
    background: var(--color-bg-secondary);
    color: var(--color-text-secondary);
    border: 1px solid var(--color-border);
}

/* MLS spinner color */
.mls-spinner {
    border-color: var(--color-mls-subtle);
    border-top-color: var(--color-mls);
}

.file-list-hint {
    font-size: 0.8125rem;
    color: var(--color-text-muted);
    margin-top: var(--space-xs);
}

.mls-file-clickable {
    cursor: pointer;
}

.mls-file-clickable:hover {
    background: var(--color-bg-secondary);
}

.mls-subject-select {
    display: flex;
    align-items: center;
    gap: var(--space-sm);
    padding: var(--space-sm) var(--space-md);
    border-top: 1px solid var(--color-border);
}

.mls-subject-select label {
    font-weight: 600;
    font-size: 0.8125rem;
    color: var(--color-text-secondary);
    white-space: nowrap;
}

.mls-subject-select select {
    flex: 1;
    padding: 6px 10px;
    border: 1px solid var(--color-border);
    border-radius: var(--radius-sm);
    background: var(--color-bg-primary);
    color: var(--color-text-primary);
    font-size: 0.8125rem;
    cursor: pointer;
}

.mls-subject-select select:focus {
    outline: none;
    border-color: var(--color-mls);
    box-shadow: 0 0 0 2px var(--color-mls-subtle);
}

.file-icon.mls {
    color: var(--color-mls);
}

.mls-subject-row {
    background: var(--color-mls-subtle);
}

.mls-subject-row td:first-child strong {
    color: var(--color-mls);
}

.mls-preview .summary-cards {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
    gap: var(--space-md);
}

.mls-preview .loading-spinner {
    border-top-color: var(--color-mls);
}

.mls-role-badge.datatree {
    background: rgba(16, 185, 129, 0.1);
    color: #059669;
    border: 1px solid rgba(16, 185, 129, 0.3);
    display: inline-block;
    padding: 1px 6px;
    border-radius: var(--radius-sm);
    font-size: 0.65rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.04em;
    margin-left: 6px;
    vertical-align: middle;
}

.mls-role-badge.mls-type {
    background: var(--color-mls-subtle);
    color: var(--color-mls);
    border: 1px solid rgba(37, 99, 235, 0.3);
    display: inline-block;
    padding: 1px 6px;
    border-radius: var(--radius-sm);
    font-size: 0.65rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.04em;
    margin-left: 6px;
    vertical-align: middle;
}

.mls-merge-notes {
    margin-top: var(--space-md);
    padding: var(--space-md);
    background: rgba(16, 185, 129, 0.05);
    border: 1px solid rgba(16, 185, 129, 0.2);
    border-radius: var(--radius-md);
}

.mls-merge-notes h4 {
    font-size: 0.8125rem;
    font-weight: 600;
    color: #059669;
    margin-bottom: var(--space-sm);
    text-transform: uppercase;
    letter-spacing: 0.04em;
}

.merge-notes-list {
    list-style: none;
    padding: 0;
    margin: 0;
    max-height: 200px;
    overflow-y: auto;
}

.merge-notes-list li {
    font-size: 0.8125rem;
    color: var(--color-text-secondary);
    padding: 3px 0;
    border-bottom: 1px solid rgba(16, 185, 129, 0.1);
}

.merge-notes-list li:last-child {
    border-bottom: none;
}