/* ========================================
   Design System - Summarizer
   Ultra Pro, Ultra Clean, Ultra Intuitive
   ======================================== */

/* CSS Variables - Design Tokens */
:root {
    /* Primary Colors */
    --primary: #2563eb;
    --primary-hover: #1d4ed8;
    --primary-light: #dbeafe;
    --primary-dark: #1e40af;

    /* Status Colors */
    --success: #10b981;
    --success-light: #d1fae5;
    --success-dark: #059669;
    --danger: #ef4444;
    --danger-light: #fee2e2;
    --danger-dark: #dc2626;
    --warning: #f59e0b;
    --warning-light: #fef3c7;
    --warning-dark: #d97706;
    --info: #3b82f6;
    --info-light: #dbeafe;
    --info-dark: #1d4ed8;

    /* Surface Colors */
    --surface: #ffffff;
    --surface-alt: #f8fafc;
    --surface-hover: #f1f5f9;
    --surface-active: #e2e8f0;

    /* Border Colors */
    --border: #e2e8f0;
    --border-hover: #cbd5e1;
    --border-focus: #2563eb;

    /* Text Colors */
    --text: #1e293b;
    --text-muted: #64748b;
    --text-light: #94a3b8;
    --text-inverse: #ffffff;

    /* Shadows */
    --shadow-xs: 0 1px 2px rgba(0, 0, 0, 0.05);
    --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.08), 0 1px 2px rgba(0, 0, 0, 0.06);
    --shadow: 0 1px 3px rgba(0, 0, 0, 0.1), 0 1px 2px rgba(0, 0, 0, 0.06);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);

    /* Typography */
    --font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
    --font-mono: "SF Mono", "Fira Code", "Fira Mono", "Consolas", monospace;

    --text-xs: 0.75rem;
    --text-sm: 0.875rem;
    --text-base: 1rem;
    --text-lg: 1.125rem;
    --text-xl: 1.25rem;
    --text-2xl: 1.5rem;
    --text-3xl: 1.875rem;
    --text-4xl: 2.25rem;

    --font-normal: 400;
    --font-medium: 500;
    --font-semibold: 600;
    --font-bold: 700;

    --leading-tight: 1.25;
    --leading-normal: 1.5;
    --leading-relaxed: 1.625;

    /* Spacing */
    --space-1: 0.25rem;
    --space-2: 0.5rem;
    --space-3: 0.75rem;
    --space-4: 1rem;
    --space-5: 1.25rem;
    --space-6: 1.5rem;
    --space-8: 2rem;
    --space-10: 2.5rem;
    --space-12: 3rem;
    --space-16: 4rem;

    /* Border Radius */
    --radius-sm: 4px;
    --radius: 6px;
    --radius-md: 8px;
    --radius-lg: 12px;
    --radius-xl: 16px;
    --radius-2xl: 24px;
    --radius-full: 9999px;

    /* Layout */
    --sidebar-width: 260px;
    --header-height: 64px;

    /* Transitions */
    --transition-fast: 100ms ease;
    --transition: 150ms ease;
    --transition-slow: 300ms ease;
}

/* 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);
    font-size: var(--text-base);
    font-weight: var(--font-normal);
    line-height: var(--leading-normal);
    color: var(--text);
    background-color: var(--surface-alt);
    min-height: 100vh;
}

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

.app-layout {
    display: flex;
    min-height: 100vh;
}

/* Mobile Menu Button */
.mobile-menu-btn {
    display: none;
    position: fixed;
    top: 16px;
    right: 16px;
    z-index: 150;
    width: 44px;
    height: 44px;
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius-md);
    cursor: pointer;
    align-items: center;
    justify-content: center;
    color: var(--text);
}

.mobile-menu-btn svg {
    width: 24px;
    height: 24px;
}

/* Sidebar */
.sidebar {
    width: var(--sidebar-width);
    background: var(--surface);
    border-right: 1px solid var(--border);
    display: flex;
    flex-direction: column;
    position: fixed;
    top: 0;
    left: 0;
    height: 100vh;
    z-index: 1000;
    transition: transform var(--transition-slow);
}

.sidebar-header {
    padding: var(--space-6);
    border-bottom: 1px solid var(--border);
    background-color: #03081a;
}

.sidebar-logo {
    display: flex;
    align-items: center;
    gap: var(--space-3);
    text-decoration: none;
    color: var(--text);
}

.sidebar-logo-icon {
    display: flex;
    align-items: center;
    justify-content: center;
}

.sidebar-logo-icon svg {
    width: 28px;
    height: 28px;
}

.sidebar-logo-text {
    font-size: var(--text-3xl);
    font-weight: 700;
    letter-spacing: -0.025em;
    color: #fff;
}

.sidebar-nav {
    flex: 1;
    padding: var(--space-4);
    overflow-y: auto;
}

.sidebar-section {
    margin-bottom: var(--space-6);
}

.sidebar-section-title {
    font-size: var(--text-xs);
    font-weight: var(--font-semibold);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--text-light);
    padding: var(--space-2) var(--space-3);
    margin-bottom: var(--space-1);
}

.link-primary {
    color: var(--primary);
    text-decoration: none;
    font-weight: 500;
}

.link-primary:hover {
    text-decoration: underline;
}

.sidebar-link {
    display: flex;
    align-items: center;
    gap: var(--space-3);
    padding: var(--space-3) var(--space-3);
    border-radius: var(--radius);
    color: var(--text-muted);
    text-decoration: none;
    font-size: var(--text-sm);
    font-weight: var(--font-medium);
    transition: all var(--transition);
}

.sidebar-link:hover {
    background: var(--surface-hover);
    color: var(--text);
}

.sidebar-link.active {
    background: var(--primary-light);
    color: var(--primary);
}

.sidebar-link svg {
    width: 20px;
    height: 20px;
    flex-shrink: 0;
}

.sidebar-footer {
    padding: var(--space-4);
    border-top: 1px solid var(--border);
}

/* Main Content */
.main-content {
    flex: 1;
    margin-left: var(--sidebar-width);
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    width: calc(100% - var(--sidebar-width));
    /* provoque un souci : max-width: calc(100% - var(--sidebar-width)); */
}

.page-actions {
    display: flex;
    align-items: center;
    gap: var(--space-3);
    min-width: 0;
}

.page-header {
    background: var(--surface);
    border-bottom: 1px solid var(--border);
    padding: var(--space-4) var(--space-8);
    display: flex;
    align-items: center;
    justify-content: space-between;
    position: sticky;
    top: 0;
    z-index: 50;
}

.page-header.page-header-split {
    flex-direction: column;
    align-items: stretch;
    gap: 12px;
}

.page-header-start {
    display: flex;
    align-items: center;
}

.page-header-icon {
    width: 20px;
    height: 20px;
    flex-shrink: 0;
    margin-right: var(--space-3);
}

.page-header-icon svg {
    width: 100%;
    height: 100%;
}

.page-title {
    font-size: var(--text-xl);
    font-weight: var(--font-semibold);
    color: var(--text);
}

.page-header-title-row {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
    width: 100%;
}

.page-header-start {
    display: flex;
    align-items: center;
    gap: var(--space-3);
    flex: 1;
    min-width: 0;
}

.page-header-actions-row {
    display: flex;
    align-items: center;
    gap: 8px;
    flex-wrap: wrap;
}

.page-actions {
    display: flex;
    align-items: center;
    gap: var(--space-3);
}

.page-content {
    flex: 1;
    padding: var(--space-8);
}

/* ========================================
   Buttons
   ======================================== */

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-2);
    padding: var(--space-3) var(--space-4);
    font-family: var(--font-sans);
    font-size: var(--text-sm);
    font-weight: var(--font-medium);
    line-height: 1;
    border-radius: var(--radius);
    border: none;
    cursor: pointer;
    text-decoration: none;
    transition: all var(--transition);
    white-space: nowrap;
}

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

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

/* Primary */
.btn-primary {
    background: var(--primary);
    color: white;
}

.btn-primary:hover:not(:disabled) {
    background: var(--primary-hover);
    transform: translateY(-1px);
    box-shadow: var(--shadow-md);
}

.btn-primary:active:not(:disabled) {
    transform: translateY(0);
}

/* Secondary */
.btn-secondary {
    background: var(--surface);
    color: var(--text);
    border: 1px solid var(--border);
}

.btn-secondary:hover:not(:disabled) {
    background: var(--surface-hover);
    border-color: var(--border-hover);
}

/* Danger */
.btn-danger {
    background: var(--danger);
    color: white;
}

.btn-danger:hover:not(:disabled) {
    background: var(--danger-dark);
    transform: translateY(-1px);
    box-shadow: var(--shadow-md);
}

/* Ghost */
.btn-ghost {
    background: transparent;
    color: var(--text-muted);
}

.btn-ghost:hover:not(:disabled) {
    background: var(--surface-hover);
    color: var(--text);
}

/* Small */
.btn-sm {
    padding: var(--space-2) var(--space-3);
    font-size: var(--text-xs);
}

.btn-sm svg {
    width: 14px;
    height: 14px;
}

/* Large */
.btn-lg {
    padding: var(--space-4) var(--space-6);
    font-size: var(--text-base);
}

/* Icon only */
.btn-icon {
    padding: var(--space-2);
}

.btn-icon.btn-sm {
    padding: var(--space-1);
}

/* ========================================
   Forms
   ======================================== */

.form-group {
    margin-bottom: var(--space-5);
}

.form-label {
    display: block;
    font-size: var(--text-sm);
    font-weight: var(--font-medium);
    color: var(--text);
    margin-bottom: var(--space-2);
}

.form-label-required::after {
    content: " *";
    color: var(--danger);
}

.form-input,
.form-textarea,
.form-select {
    width: 100%;
    padding: var(--space-3) var(--space-4);
    font-family: var(--font-sans);
    font-size: var(--text-sm);
    color: var(--text);
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    transition: all var(--transition);
}

.form-input:focus,
.form-textarea:focus,
.form-select:focus {
    outline: none;
    border-color: var(--border-focus);
    box-shadow: 0 0 0 3px var(--primary-light);
}

.form-input::placeholder,
.form-textarea::placeholder {
    color: var(--text-light);
}

.form-input:disabled,
.form-textarea:disabled,
.form-select:disabled {
    background: var(--surface-alt);
    cursor: not-allowed;
}

.form-textarea {
    min-height: 120px;
    resize: vertical;
}

.form-help {
    font-size: var(--text-xs);
    color: var(--text-muted);
    margin-top: var(--space-1);
}

.form-error {
    font-size: var(--text-xs);
    color: var(--danger);
    margin-top: var(--space-1);
}

.form-checkbox {
    display: flex;
    align-items: center;
    gap: var(--space-2);
    cursor: pointer;
}

.form-checkbox input {
    width: 18px;
    height: 18px;
    accent-color: var(--primary);
    cursor: pointer;
}

.form-checkbox-label {
    font-size: var(--text-sm);
    color: var(--text);
}

/* ========================================
   Cards
   ======================================== */

.card {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-sm);
    overflow: hidden;
}

.card-header {
    padding: var(--space-5) var(--space-6);
    border-bottom: 1px solid var(--border);
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.card-title {
    font-size: var(--text-lg);
    font-weight: var(--font-semibold);
    color: var(--text);
}

.card-body {
    padding: var(--space-6);
}

.card-footer {
    padding: var(--space-4) var(--space-6);
    border-top: 1px solid var(--border);
    background: var(--surface-alt);
}

/* ========================================
   Tables
   ======================================== */

.table-container {
    overflow-x: auto;
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    background: var(--surface);
}

.table {
    width: 100%;
    border-collapse: collapse;
    font-size: var(--text-sm);
}

.table th,
.table td {
    padding: var(--space-3) var(--space-4);
    text-align: left;
    border-bottom: 1px solid var(--border);
}

.table th {
    font-weight: var(--font-semibold);
    color: var(--text-muted);
    background: var(--surface-alt);
    font-size: var(--text-xs);
    text-transform: uppercase;
    letter-spacing: 0.05em;
}

.table tbody tr:hover {
    background: var(--surface-hover);
}

.table tbody tr:last-child td {
    border-bottom: none;
}

.table-actions {
    display: flex;
    gap: var(--space-2);
    justify-content: flex-end;
}

/* ========================================
   Badges
   ======================================== */

.badge {
    display: inline-flex;
    align-items: center;
    padding: var(--space-1) var(--space-2);
    font-size: var(--text-xs);
    font-weight: var(--font-medium);
    border-radius: var(--radius-full);
}

.badge-success {
    background: var(--success-light);
    color: var(--success-dark);
}

.badge-warning {
    background: var(--warning-light);
    color: var(--warning-dark);
}

.badge-danger {
    background: var(--danger-light);
    color: var(--danger-dark);
}

.badge-info {
    background: var(--info-light);
    color: var(--info-dark);
}

.badge-neutral {
    background: var(--surface-hover);
    color: var(--text-muted);
}

/* ========================================
   Modals (REQUIRED - NO ALERTS)
   ======================================== */

.modal-overlay {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.5);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 1000;
    opacity: 0;
    visibility: hidden;
    transition: all var(--transition);
}

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

.modal {
    background: var(--surface);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-xl);
    max-width: 480px;
    width: 90%;
    max-height: 90vh;
    overflow-y: auto;
    transform: scale(0.95) translateY(20px);
    transition: transform var(--transition);
}

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

.modal-header {
    padding: var(--space-6);
    border-bottom: 1px solid var(--border);
}

.modal-title {
    font-size: var(--text-lg);
    font-weight: var(--font-semibold);
    color: var(--text);
}

.modal-body {
    padding: var(--space-6);
}

.modal-footer {
    padding: var(--space-4) var(--space-6);
    border-top: 1px solid var(--border);
    display: flex;
    gap: var(--space-3);
    justify-content: flex-end;
}

/* ========================================
   Drop Zone
   ======================================== */

.dropzone {
    border: 2px dashed var(--border);
    border-radius: var(--radius-lg);
    padding: var(--space-12);
    text-align: center;
    cursor: pointer;
    transition: all var(--transition);
    background: var(--surface-alt);
}

.dropzone:hover,
.dropzone.dragover {
    border-color: var(--primary);
    background: var(--primary-light);
}

.dropzone-icon {
    width: 48px;
    height: 48px;
    margin: 0 auto var(--space-4);
    color: var(--text-light);
}

.dropzone-icon svg,
.dropzone-icon svg use {
    width: 100%;
    height: 100%;
}

.dropzone-text {
    font-size: var(--text-base);
    color: var(--text-muted);
    margin-bottom: var(--space-2);
}

.dropzone-hint {
    font-size: var(--text-sm);
    color: var(--text-light);
}

.dropzone-formats {
    margin-top: var(--space-4);
    font-size: var(--text-xs);
    color: var(--text-light);
}

/* ========================================
   Tabs
   ======================================== */

.tabs {
    border-bottom: 1px solid var(--border);
    margin-bottom: var(--space-6);
}

.tab-list {
    display: flex;
    gap: var(--space-1);
}

.tab {
    padding: var(--space-3) var(--space-4);
    font-size: var(--text-sm);
    font-weight: var(--font-medium);
    color: var(--text-muted);
    background: none;
    border: none;
    border-bottom: 2px solid transparent;
    cursor: pointer;
    transition: all var(--transition);
    margin-bottom: -1px;
}

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

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

.tab-content {
    display: none;
}

.tab-content.active {
    display: block;
}

/* ========================================
   Stats Cards
   ======================================== */

.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
    gap: var(--space-6);
    margin-bottom: var(--space-8);
}

.stat-card {
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    padding: var(--space-6);
    display: flex;
    align-items: flex-start;
    gap: var(--space-4);
    transition: all var(--transition);
}

.stat-card:hover {
    box-shadow: var(--shadow-md);
    transform: translateY(-2px);
}

.stat-icon {
    width: 48px;
    height: 48px;
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.stat-icon svg {
    width: 24px;
    height: 24px;
}

.stat-icon-primary {
    background: var(--primary-light);
    color: var(--primary);
}

.stat-icon-success {
    background: var(--success-light);
    color: var(--success);
}

.stat-icon-warning {
    background: var(--warning-light);
    color: var(--warning);
}

.stat-icon-info {
    background: var(--info-light);
    color: var(--info);
}

.stat-content {
    flex: 1;
}

.stat-value {
    font-size: var(--text-3xl);
    font-weight: var(--font-bold);
    color: var(--text);
    line-height: 1;
    margin-bottom: var(--space-1);
}

.stat-label {
    font-size: var(--text-sm);
    color: var(--text-muted);
}

/* ========================================
   Empty State
   ======================================== */

.empty-state {
    text-align: center;
    padding: var(--space-16) var(--space-8);
}

.empty-state-icon {
    width: 64px;
    height: 64px;
    margin: 0 auto var(--space-6);
    color: var(--text-light);
}

.empty-state-icon svg,
.empty-state-icon svg use {
    width: 100%;
    height: 100%;
}

.empty-state-title {
    font-size: var(--text-xl);
    font-weight: var(--font-semibold);
    color: var(--text);
    margin-bottom: var(--space-2);
}

.empty-state-text {
    font-size: var(--text-base);
    color: var(--text-muted);
    margin-bottom: var(--space-6);
    max-width: 400px;
    margin-left: auto;
    margin-right: auto;
}

/* ========================================
   Markdown Content
   ======================================== */

.markdown-content {
    line-height: var(--leading-relaxed);
}

.markdown-content h1 {
    font-size: var(--text-2xl);
    font-weight: var(--font-bold);
    margin-bottom: var(--space-4);
    padding-bottom: var(--space-2);
    border-bottom: 1px solid var(--border);
}

.markdown-content h2 {
    font-size: var(--text-xl);
    font-weight: var(--font-semibold);
    margin-top: var(--space-8);
    margin-bottom: var(--space-3);
}

.markdown-content h3 {
    font-size: var(--text-lg);
    font-weight: var(--font-semibold);
    margin-top: var(--space-6);
    margin-bottom: var(--space-2);
}

.markdown-content p {
    margin-bottom: var(--space-4);
}

.markdown-content ul,
.markdown-content ol {
    margin-bottom: var(--space-4);
    padding-left: var(--space-6);
}

.markdown-content li {
    margin-bottom: var(--space-2);
}

.markdown-content code {
    font-family: var(--font-mono);
    font-size: var(--text-sm);
    background: var(--surface-alt);
    padding: var(--space-1) var(--space-2);
    border-radius: var(--radius-sm);
}

.markdown-content pre {
    background: var(--surface-alt);
    padding: var(--space-4);
    border-radius: var(--radius-md);
    overflow-x: auto;
    margin-bottom: var(--space-4);
}

.markdown-content pre code {
    background: none;
    padding: 0;
}

.markdown-content blockquote {
    border-left: 4px solid var(--primary);
    padding-left: var(--space-4);
    margin: var(--space-4) 0;
    color: var(--text-muted);
    font-style: italic;
}

.markdown-content table {
    width: 100%;
    border-collapse: collapse;
    margin-bottom: var(--space-4);
    font-size: var(--text-sm);
}

.markdown-content th,
.markdown-content td {
    padding: var(--space-3) var(--space-4);
    text-align: left;
    border: 1px solid var(--border);
}

.markdown-content th {
    font-weight: var(--font-semibold);
    background: var(--surface-alt);
    color: var(--text);
}

.markdown-content tr:hover {
    background: var(--surface-hover);
}

/* ========================================
   Loading & Spinner
   ======================================== */

.spinner {
    width: 24px;
    height: 24px;
    border: 3px solid var(--border);
    border-top-color: var(--primary);
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
}

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

.loading-overlay {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(255, 255, 255, 0.8);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 2000;
}

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

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

.text-right {
    text-align: right;
}

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

.text-success {
    color: var(--success);
}

.text-danger {
    color: var(--danger);
}

.text-warning {
    color: var(--warning);
}

.mt-4 { margin-top: var(--space-4); }
.mt-6 { margin-top: var(--space-6); }
.mt-8 { margin-top: var(--space-8); }
.mb-4 { margin-bottom: var(--space-4); }
.mb-6 { margin-bottom: var(--space-6); }
.mb-8 { margin-bottom: var(--space-8); }

.flex { display: flex; }
.flex-col { flex-direction: column; }
.items-center { align-items: center; }
.justify-between { justify-content: space-between; }
.gap-2 { gap: var(--space-2); }
.gap-4 { gap: var(--space-4); }
.gap-6 { gap: var(--space-6); }

.grid {
    display: grid;
}

.grid-cols-2 {
    grid-template-columns: repeat(2, 1fr);
}

.grid-cols-3 {
    grid-template-columns: repeat(3, 1fr);
}

.hidden {
    display: none !important;
}

/* ========================================
   Responsive
   ======================================== */

/* Tablet: 769px - 900px - sidebar becomes hidden with hamburger menu */
@media (max-width: 900px) {
    html, body {
        overflow-x: hidden;
        max-width: 100vw;
    }
    
    .sidebar {
        transform: translateX(-100%);
        max-width: 260px;
    }
    
    .sidebar.open {
        transform: translateX(0);
    }
    
    .main-content {
        margin-left: 0;
        width: 100%;
    }
    
    .mobile-menu-btn {
        display: flex;
    }
    
    .page-header {
        padding: var(--space-3) var(--space-4);
        padding-right: 60px;
    }
    
    .page-content {
        padding: var(--space-4);
    }
}

@media (max-width: 768px) {
    /* Prevent horizontal scroll on all pages */
    html,
    body {
        overflow-x: hidden;
        max-width: 100vw;
    }

    .mobile-menu-btn {
        display: flex;
        position: fixed;
        top: 12px;
        right: 12px;
        z-index: 200;
        width: 44px;
        height: 44px;
    }

    /* Sidebar with overlay */
    .sidebar-overlay {
        display: none;
        position: fixed;
        top: 0;
        left: 0;
        right: 0;
        bottom: 0;
        background: rgba(0, 0, 0, 0.5);
        z-index: 90;
    }

    .sidebar-overlay.active {
        display: block;
    }

    .page-header {
        padding: var(--space-3) var(--space-4);
        padding-right: 60px;
        flex-wrap: wrap;
        gap: var(--space-2);
        min-height: 56px;
    }

    .page-title {
        font-size: var(--text-lg);
        flex: 1;
        min-width: 0;
    }

    .page-actions {
        /* width: 100%; */
        justify-content: flex-start;
        margin-top: var(--space-2);
        flex-wrap: wrap;
        gap: var(--space-2);
    }

    .page-actions .btn {
        font-size: var(--text-sm);
        padding: var(--space-2) var(--space-3);
        min-height: 44px;
    }

    .page-header-title-row {
        flex-wrap: wrap;
        gap: var(--space-2);
    }

    .page-header-actions-row {
        width: 100%;
        justify-content: flex-start;
    }

    :root {
        --sidebar-width: 100%;
    }

    .sidebar {
        transform: translateX(-100%);
        max-width: 280px;
    }

    .sidebar.open {
        transform: translateX(0);
    }

    .main-content {
        margin-left: 0;
        width: 100%;
        max-width: 100vw;
    }

    .page-content {
        padding: var(--space-4);
        width: 100%;
        max-width: 100%;
    }

    .stats-grid {
        grid-template-columns: 1fr;
        gap: var(--space-4);
    }

    .stat-card {
        padding: var(--space-4);
    }

    .stat-value {
        font-size: var(--text-2xl);
    }

    /* Table with proper horizontal scroll */
    .table-container {
        margin: 0 calc(var(--space-4) * -1);
        padding: 0 var(--space-4);
        border-radius: 0;
        border-left: none;
        border-right: none;
        overflow-x: auto;
        -webkit-overflow-scrolling: touch;
        width: calc(100% + var(--space-8));
        max-width: 100vw;
    }

    .table {
        min-width: 500px;
        font-size: var(--text-sm);
        width: 100%;
    }

    .table th,
    .table td {
        padding: var(--space-2) var(--space-3);
        white-space: nowrap;
    }

    .table-actions {
        gap: var(--space-1);
        justify-content: flex-start;
    }

    /* Touch-friendly buttons */
    .btn {
        min-height: 44px;
        padding: var(--space-3) var(--space-4);
        font-size: var(--text-sm);
    }

    .btn-sm {
        min-height: 36px;
        padding: var(--space-2) var(--space-3);
        font-size: var(--text-xs);
    }

    .btn-sm svg {
        width: 14px;
        height: 14px;
    }

    .btn-icon {
        width: 44px;
        height: 44px;
        padding: var(--space-2);
    }

    /* Cards fit within viewport */
    .card {
        margin: 0;
        border-radius: var(--radius-lg);
        width: 100%;
        max-width: 100%;
    }

    .card-header {
        padding: var(--space-4);
        flex-wrap: wrap;
        gap: var(--space-2);
    }

    .card-body {
        padding: var(--space-4);
    }

    .card-footer {
        padding: var(--space-3) var(--space-4);
        flex-wrap: wrap;
    }

    /* Form mobile styling */
    .form-group {
        margin-bottom: var(--space-4);
    }

    .form-label {
        font-size: var(--text-sm);
        margin-bottom: var(--space-2);
    }

    .form-input,
    .form-textarea,
    .form-select {
        font-size: 16px;
        padding: var(--space-3) var(--space-3);
        min-height: 44px;
    }

    .form-textarea {
        min-height: 100px;
    }

    .form-checkbox input {
        width: 24px;
        height: 24px;
    }

    /* Tabs */
    .tabs {
        overflow-x: auto;
        -webkit-overflow-scrolling: touch;
    }

    .tab-list {
        flex-wrap: nowrap;
    }

    .tab {
        padding: var(--space-3) var(--space-4);
        font-size: var(--text-sm);
        white-space: nowrap;
    }

    /* Modal fits mobile */
    .modal {
        margin: var(--space-2);
        max-width: calc(100% - var(--space-4));
        width: calc(100% - var(--space-4));
        max-height: 85vh;
    }

    .modal-header {
        padding: var(--space-4);
    }

    .modal-title {
        font-size: var(--text-lg);
    }

    .modal-body {
        padding: var(--space-4);
    }

    .modal-footer {
        padding: var(--space-3) var(--space-4);
        flex-wrap: wrap;
    }

    .modal-footer .btn {
        flex: 1;
        min-width: 100px;
    }

    /* Dropzone */
    .dropzone {
        padding: var(--space-8) var(--space-4);
    }

    .dropzone-text {
        font-size: var(--text-sm);
    }

    .dropzone-formats {
        font-size: var(--text-xs);
    }

    /* Search */
    .search-bar {
        margin-bottom: var(--space-4);
        flex-direction: column;
    }

    .search-input-wrapper {
        width: 100%;
    }

    .search-input {
        font-size: var(--text-base);
    }

    /* Pagination */
    .pagination {
        flex-wrap: wrap;
        gap: var(--space-2);
    }

    .pagination-btn {
        min-width: 44px;
        min-height: 44px;
        display: flex;
        align-items: center;
        justify-content: center;
    }

    /* Grid layouts */
    .grid-cols-2,
    .grid-cols-3 {
        grid-template-columns: 1fr;
    }

    /* Utility adjustments */
    .page-content > *:first-child {
        margin-top: 0;
    }

    /* Login page mobile */
    .login-page {
        padding: var(--space-4);
    }

    .login-card {
        padding: var(--space-6);
    }

    /* Empty state */
    .empty-state {
        padding: var(--space-8) var(--space-4);
    }

    /* Markdown content */
    .markdown-content {
        font-size: var(--text-sm);
    }

    .markdown-content h1 {
        font-size: var(--text-xl);
    }

    .markdown-content h2 {
        font-size: var(--text-lg);
    }

    .markdown-content h3 {
        font-size: var(--text-base);
    }

    /* Streaming preview */
    .streaming-preview {
        padding: var(--space-4);
        max-height: 300px;
    }

    /* Alerts */
    .alert {
        padding: var(--space-3);
        font-size: var(--text-sm);
    }
}

/* ========================================
   Login Page
   ======================================== */

.login-page {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    background: var(--surface-alt);
    padding: var(--space-4);
}

.login-card {
    width: 100%;
    max-width: 400px;
    background: var(--surface);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-lg);
    padding: var(--space-8);
}

.login-logo {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-3);
    margin-bottom: var(--space-8);
}

.login-logo-icon {
    width: 48px;
    height: 48px;
    background: var(--primary);
    border-radius: var(--radius-lg);
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-weight: var(--font-bold);
    font-size: var(--text-2xl);
}

.login-logo-text {
    font-size: var(--text-2xl);
    font-weight: var(--font-bold);
    color: var(--text);
}

.login-title {
    text-align: center;
    font-size: var(--text-xl);
    font-weight: var(--font-semibold);
    margin-bottom: var(--space-6);
}

.login-error {
    background: var(--danger-light);
    color: var(--danger-dark);
    padding: var(--space-3) var(--space-4);
    border-radius: var(--radius);
    font-size: var(--text-sm);
    margin-bottom: var(--space-4);
}

/* ========================================
   Streaming Preview
   ======================================== */

.streaming-preview {
    background: var(--surface-alt);
    border: 1px solid var(--border);
    border-radius: var(--radius-lg);
    padding: var(--space-6);
    min-height: 200px;
    max-height: 400px;
    overflow-y: auto;
}

.streaming-preview .markdown-content {
    font-size: var(--text-sm);
}

.streaming-preview .markdown-content table {
    width: 100%;
    border-collapse: collapse;
    margin-bottom: var(--space-4);
    font-size: var(--text-sm);
}

.streaming-preview .markdown-content th,
.streaming-preview .markdown-content td {
    padding: var(--space-2) var(--space-3);
    text-align: left;
    border: 1px solid var(--border);
}

.streaming-preview .markdown-content th {
    font-weight: var(--font-semibold);
    background: var(--surface-alt);
    color: var(--text);
}

.streaming-cursor {
    display: inline-block;
    width: 2px;
    height: 1em;
    background: var(--primary);
    animation: blink 1s step-end infinite;
    vertical-align: text-bottom;
}

@keyframes blink {
    50% {
        opacity: 0;
    }
}

/* ========================================
   Search
   ======================================== */

.search-bar {
    display: flex;
    gap: var(--space-3);
    margin-bottom: var(--space-6);
}

.search-input-wrapper {
    flex: 1;
    position: relative;
}

.search-input {
    width: 100%;
    padding-left: var(--space-10);
}

.search-icon {
    position: absolute;
    left: var(--space-3);
    top: 50%;
    transform: translateY(-50%);
    width: 20px;
    height: 20px;
    color: var(--text-light);
}

/* ========================================
   Pagination
   ======================================== */

.pagination {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--space-1);
    margin-top: var(--space-6);
}

.pagination-btn {
    padding: var(--space-2) var(--space-3);
    font-size: var(--text-sm);
    color: var(--text-muted);
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    cursor: pointer;
    transition: all var(--transition);
}

.pagination-btn:hover:not(:disabled) {
    background: var(--surface-hover);
    color: var(--text);
}

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

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

/* ========================================
   Alert Messages (in page, not JS alert)
   ======================================== */

.alert {
    padding: var(--space-4);
    border-radius: var(--radius);
    font-size: var(--text-sm);
    margin-bottom: var(--space-4);
    display: flex;
    align-items: center;
    gap: var(--space-3);
}

.alert svg {
    width: 20px;
    height: 20px;
    flex-shrink: 0;
}

.alert-success {
    background: var(--success-light);
    color: var(--success-dark);
}

.alert-warning {
    background: var(--warning-light);
    color: var(--warning-dark);
}

.alert-danger {
    background: var(--danger-light);
    color: var(--danger-dark);
}

.alert-info {
    background: var(--info-light);
    color: var(--info-dark);
}

/* Dropdown */
.dropdown {
    position: relative;
    display: inline-block;
}
.dropdown-menu {
    display: none;
    position: absolute;
    top: 100%;
    right: 0;
    z-index: 100;
    min-width: 200px;
    margin-top: 4px;
    padding: 4px 0;
    background: var(--surface);
    border: 1px solid var(--border);
    box-shadow: var(--shadow-lg);
}
.dropdown-menu.active,
.dropdown-menu[style*="display: block"] {
    display: block !important;
}
    border-radius: 8px;
    box-shadow: var(--shadow-lg);
}
.dropdown-menu.active {
    display: block;
}
.dropdown-item {
    display: flex;
    align-items: center;
    gap: 8px;
    width: 100%;
    padding: 10px 16px;
    background: none;
    border: none;
    color: var(--text);
    font-size: 0.9375rem;
    text-align: left;
    cursor: pointer;
    text-decoration: none;
}
.dropdown-item:hover {
    background: var(--surface-hover);
}
.dropdown-item svg {
    width: 18px;
    height: 18px;
    flex-shrink: 0;
}

/* ========================================
   List Items - Unified style
   ======================================== */
.list-items-container {
    display: flex;
    flex-direction: column;
    gap: 8px;
    padding: 16px;
}

.list-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 12px 16px;
    background: var(--surface-alt);
    border-radius: 8px;
    transition: background 0.15s ease;
}
.list-item:hover {
    background: var(--surface-hover);
}

.list-item-main {
    flex: 1;
    min-width: 0;
    display: flex;
    flex-direction: column;
    gap: 4px;
}

.list-item-title-row {
    display: flex;
    align-items: center;
    gap: 8px;
}

.list-item-source-icon {
    width: 18px;
    height: 18px;
    flex-shrink: 0;
    fill: var(--text-muted);
}

.list-item-title {
    color: var(--text);
    text-decoration: none;
}
.list-item-title:hover {
    color: var(--primary);
}

.list-item-meta {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    font-size: 0.85em;
    color: var(--text-muted);
    align-items: center;
}

.list-item-meta-link {
    color: var(--text-muted);
    text-decoration: none;
}
.list-item-meta-link:hover {
    color: var(--primary);
    text-decoration: underline;
}

.list-item-actions {
    display: flex;
    gap: 4px;
    flex-shrink: 0;
    flex-wrap: wrap;
}

/* Responsive */
@media (max-width: 640px) {
    .list-item {
        flex-direction: column;
        align-items: flex-start;
        gap: 12px;
    }
    .list-item-actions {
        width: 100%;
        justify-content: flex-start;
    }
}

/* ============================================
   Responsive Header (mobile)
   ============================================ */

.responsive-header {
    display: none;
    background: var(--surface);
    border-bottom: 1px solid var(--border);
    padding: 8px 12px;
    align-items: center;
    justify-content: space-between;
    position: sticky;
    top: 0;
    z-index: 200;
    min-height: 56px;
}

.responsive-header-logo {
    display: flex;
    align-items: center;
    gap: 8px;
    text-decoration: none;
}

.responsive-header-logo-text {
    font-size: 16px;
    font-weight: 700;
    color: #fff;
    letter-spacing: -0.01em;
}

.responsive-header .mobile-menu-btn {
    position: static;
    width: 40px;
    height: 40px;
    border-radius: var(--radius-md);
    background: transparent;
    border: 1px solid rgba(255,255,255,0.2);
    color: #fff;
}

.responsive-header .mobile-menu-btn:hover {
    background: rgba(255,255,255,0.1);
}

@media (min-width: 901px) {
    .responsive-header {
        display: none !important;
    }
}

@media (max-width: 900px) {
    .responsive-header {
        display: flex;
        background: #03081a;
        border-bottom: none;
    }
}

/* ============================================
   Toast Notifications (global)
   ============================================ */

.toast {
    position: fixed;
    bottom: 20px;
    right: 20px;
    padding: 12px 20px;
    border-radius: 8px;
    color: white;
    font-weight: 500;
    z-index: 9999;
    display: none;
    animation: toastSlideIn 0.3s ease;
}

.toast-success {
    background: #10b981;
}

.toast-error {
    background: #ef4444;
}

@keyframes toastSlideIn {
    from {
        transform: translateX(100%);
        opacity: 0;
    }
    to {
        transform: translateX(0);
        opacity: 1;
    }
}

/* ============================================
   Social Generator (shared by FB, Twitter, LinkedIn)
   ============================================ */

.social-generator {
    max-width: 900px;
    margin: 0 auto;
}

.social-generator .form-group {
    margin-bottom: 1.5rem;
}

.social-generator label {
    display: block;
    font-weight: 600;
    margin-bottom: 0.5rem;
    color: var(--text);
}

.social-generator .hint {
    font-size: 0.875rem;
    color: var(--text-muted);
    margin-top: 0.25rem;
}

.social-generator textarea {
    width: 100%;
    min-height: 120px;
    padding: 0.75rem;
    border: 1px solid var(--border);
    border-radius: 8px;
    background: var(--surface);
    color: var(--text);
    font-family: inherit;
    font-size: 0.9375rem;
    resize: vertical;
}

.social-generator textarea:focus,
.social-generator select:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 3px var(--primary-alpha);
}

.social-generator select {
    width: 100%;
    padding: 0.75rem;
    border: 1px solid var(--border);
    border-radius: 8px;
    background: var(--surface);
    color: var(--text);
    font-size: 0.9375rem;
}

.social-generator .checkbox-group {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    margin-top: 1rem;
}

.social-generator .checkbox-group input[type="checkbox"] {
    width: 20px;
    height: 20px;
    cursor: pointer;
}

.social-generator .checkbox-group label {
    margin: 0;
    cursor: pointer;
    font-weight: normal;
}

.social-generator .result-box {
    margin-top: 2rem;
    padding: 1.5rem;
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: 12px;
}

.social-generator .result-content {
    white-space: pre-wrap;
    line-height: 1.6;
    font-size: 0.9375rem;
}

.social-generator .result-actions {
    display: flex;
    gap: 0.75rem;
    margin-top: 1rem;
    padding-top: 1rem;
    border-top: 1px solid var(--border);
    flex-wrap: wrap;
}

.social-generator .loading {
    text-align: center;
    padding: 2rem;
    color: var(--text-muted);
    animation: socialPulse 1.5s ease-in-out infinite;
}

@keyframes socialPulse {
    0%, 100% { opacity: 0.4; }
    50% { opacity: 1; }
}

.social-generator .streaming-cursor {
    display: inline-block;
    width: 2px;
    height: 1.2em;
    background: var(--primary);
    margin-left: 2px;
    animation: blink 1s infinite;
    vertical-align: text-bottom;
}

@keyframes blink {
    0%, 50% { opacity: 1; }
    51%, 100% { opacity: 0; }
}

.social-generator .spinner {
    display: inline-block;
    width: 24px;
    height: 24px;
    border: 3px solid var(--border);
    border-top-color: var(--primary);
    border-radius: 50%;
    animation: spin 1s linear infinite;
    margin-right: 0.5rem;
    vertical-align: middle;
}

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

/* Shared social post utilities */
.post-char-count,
.tweet-char-count {
    font-size: 0.75rem;
    color: var(--text-muted);
    float: right;
}

/* Thread display (Twitter-specific, but used globally) */
.thread-tweet {
    padding: 1rem;
    border: 1px solid var(--border);
    border-radius: 12px;
    margin-bottom: 0.75rem;
    background: var(--surface);
}

.thread-tweet-number {
    font-weight: 700;
    color: var(--primary);
    margin-right: 0.5rem;
}

/* ============================================
   Platform Colors (Facebook, Twitter, LinkedIn)
   ============================================ */

.social-generator.platform-facebook {
    --platform-primary: #1877F2;
    --platform-primary-hover: #166fe5;
}

.social-generator.platform-twitter {
    --platform-primary: #111111;
    --platform-primary-hover: #333333;
}

.social-generator.platform-linkedin {
    --platform-primary: #0A66C2;
    --platform-primary-hover: #0958a8;
}

/* Apply platform colors within social generator */
.social-generator.platform-facebook .btn-primary,
.social-generator.platform-twitter .btn-primary,
.social-generator.platform-linkedin .btn-primary {
    background: var(--platform-primary);
}

.social-generator.platform-facebook .btn-primary:hover:not(:disabled),
.social-generator.platform-twitter .btn-primary:hover:not(:disabled),
.social-generator.platform-linkedin .btn-primary:hover:not(:disabled) {
    background: var(--platform-primary-hover);
}

.social-generator.platform-facebook .streaming-cursor,
.social-generator.platform-twitter .streaming-cursor,
.social-generator.platform-linkedin .streaming-cursor {
    background: var(--platform-primary);
}

.social-generator.platform-facebook .spinner,
.social-generator.platform-twitter .spinner,
.social-generator.platform-linkedin .spinner {
    border-top-color: var(--platform-primary);
}