/* ============================================
   DESIGN SYSTEM MODERNE - CompoundSim
   ============================================ */

/* Variables CSS - Design System */
:root {
    /* Couleurs principales */
    --primary: #6366f1;
    --primary-dark: #4f46e5;
    --primary-light: #818cf8;
    --secondary: #10b981;
    --accent: #f59e0b;
    
    /* Couleurs neutres */
    --gray-50: #f9fafb;
    --gray-100: #f3f4f6;
    --gray-200: #e5e7eb;
    --gray-300: #d1d5db;
    --gray-400: #9ca3af;
    --gray-500: #6b7280;
    --gray-600: #4b5563;
    --gray-700: #374151;
    --gray-800: #1f2937;
    --gray-900: #111827;
    
    /* Couleurs sémantiques */
    --success: #10b981;
    --warning: #f59e0b;
    --error: #ef4444;
    --info: #3b82f6;
    
    /* Backgrounds - Thème clair */
    --bg-primary: #ffffff;
    --bg-secondary: #f9fafb;
    --bg-tertiary: #f3f4f6;
    
    /* Text - Thème clair */
    --text-primary: #111827;
    --text-secondary: #6b7280;
    --text-tertiary: #9ca3af;
    
    /* Border - Thème clair */
    --border-color: #e5e7eb;
    
    /* Shadows */
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --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);
    
    /* Border radius */
    --radius-sm: 0.375rem;
    --radius-md: 0.5rem;
    --radius-lg: 0.75rem;
    --radius-xl: 1rem;
    --radius-2xl: 1.5rem;
    --radius-full: 9999px;
    
    /* Spacing */
    --spacing-xs: 0.25rem;
    --spacing-sm: 0.5rem;
    --spacing-md: 1rem;
    --spacing-lg: 1.5rem;
    --spacing-xl: 2rem;
    --spacing-2xl: 3rem;
    
    /* Typography */
    --font-sans: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Roboto', 'Oxygen', 'Ubuntu', 'Cantarell', 'Fira Sans', 'Droid Sans', 'Helvetica Neue', sans-serif;
    --font-mono: 'SF Mono', Monaco, 'Cascadia Code', 'Roboto Mono', Consolas, 'Courier New', monospace;
    
    /* Transitions */
    --transition-fast: 150ms ease-in-out;
    --transition-base: 250ms ease-in-out;
    --transition-slow: 350ms ease-in-out;
}

/* Thème sombre */
[data-theme="dark"] {
    /* Surcharge des variables Bootstrap */
    --bs-body-bg: #0f0f0f;
    --bs-body-color: #f9fafb;
    --bs-border-color: #374151;
    
    /* Backgrounds - Thème sombre */
    --bg-primary: #1a1a1a;
    --bg-secondary: #0f0f0f;
    --bg-tertiary: #1f1f1f;
    
    /* Text - Thème sombre */
    --text-primary: #f9fafb;
    --text-secondary: #d1d5db;
    --text-tertiary: #9ca3af;
    
    /* Border - Thème sombre */
    --border-color: #374151;
    
    /* Ajustements pour les cartes */
    --card-bg: #1f1f1f;
    --card-border: #374151;
    
    /* Ajustements pour les inputs */
    --input-bg: #1f1f1f;
    --input-border: #374151;
    --input-text: #f9fafb;
    
    /* Ajustements pour les boutons */
    --btn-secondary-bg: #374151;
    --btn-secondary-hover: #4b5563;
}

/* Reset & Base Styles */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
    font-size: 16px;
}

body {
    font-family: var(--font-sans);
    font-size: 1rem;
    line-height: 1.6;
    color: var(--text-primary);
    background: var(--bg-secondary);
    background-color: var(--bg-secondary) !important;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    transition: background-color 0.3s ease, color 0.3s ease;
}

/* Surcharge Bootstrap body bg */
[data-theme="dark"] body {
    background-color: var(--bg-secondary) !important;
    color: var(--text-primary) !important;
}

/* Typography */
h1, h2, h3, h4, h5, h6 {
    font-weight: 700;
    line-height: 1.2;
    color: var(--text-primary);
    margin-bottom: var(--spacing-md);
}

h1 {
    font-size: 2.5rem;
    font-weight: 800;
    letter-spacing: -0.02em;
}

h2 {
    font-size: 2rem;
    font-weight: 700;
}

h3 {
    font-size: 1.5rem;
    font-weight: 600;
}

p {
    margin-bottom: var(--spacing-md);
    color: var(--text-secondary);
}

a {
    color: var(--primary);
    text-decoration: none;
    transition: color var(--transition-fast);
}

a:hover {
    color: var(--primary-dark);
}

/* Header Modern */
header {
    background: var(--bg-primary);
    border-bottom: 1px solid var(--border-color);
    box-shadow: var(--shadow-sm);
    position: sticky;
    top: 0;
    z-index: 1000;
    backdrop-filter: blur(10px);
    transition: background-color 0.3s ease, border-color 0.3s ease;
}

[data-theme="dark"] header {
    background: rgba(26, 26, 26, 0.95);
}

.header-container {
    max-width: 1400px;
    margin: 0 auto;
    padding: var(--spacing-md) var(--spacing-xl);
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: var(--spacing-lg);
}

.logo {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    font-size: 1.5rem;
    font-weight: 800;
    color: var(--primary);
    text-decoration: none;
}

.logo svg {
    width: 40px;
    height: 40px;
}

.logo span {
    background: linear-gradient(135deg, var(--primary) 0%, var(--primary-light) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

/* Header Actions */
.header-actions {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
}

.theme-toggle {
    background: none;
    border: 2px solid var(--border-color);
    color: var(--text-primary);
    width: 40px;
    height: 40px;
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: all var(--transition-fast);
    font-size: 1.1rem;
}

.theme-toggle:hover {
    background: var(--gray-100);
    border-color: var(--primary);
    color: var(--primary);
    transform: scale(1.05);
}

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

[data-theme="dark"] .theme-toggle:hover {
    background: var(--bg-tertiary);
    border-color: var(--primary);
    color: var(--primary);
}

.theme-toggle:focus-visible {
    outline: 2px solid var(--primary);
    outline-offset: 2px;
}

/* Navigation */
nav {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    flex-wrap: wrap;
}

nav a {
    color: var(--text-secondary);
    font-weight: 500;
    font-size: 0.95rem;
    padding: var(--spacing-sm) var(--spacing-md);
    border-radius: var(--radius-md);
    transition: all var(--transition-fast);
    text-decoration: none;
    white-space: nowrap;
}

nav a:hover,
nav a.active {
    color: var(--primary);
    background: var(--gray-50);
}

/* Navigation Dropdown */
.nav-dropdown {
    position: relative;
}

.nav-dropdown-toggle {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    cursor: pointer;
    background: none;
    border: none;
    color: var(--text-secondary);
    font-weight: 500;
    font-size: 0.95rem;
    padding: var(--spacing-sm) var(--spacing-md);
    border-radius: var(--radius-md);
    transition: all var(--transition-fast);
    text-decoration: none;
    white-space: nowrap;
    font-family: var(--font-sans);
}

.nav-dropdown-toggle:hover {
    color: var(--primary);
    background: var(--gray-50);
}

.nav-dropdown-toggle.active {
    color: var(--primary);
    background: var(--gray-50);
}

.nav-dropdown-toggle .dropdown-arrow {
    font-size: 0.75rem;
    transition: transform var(--transition-fast);
    margin-left: var(--spacing-xs);
}

.nav-dropdown:hover .dropdown-arrow,
.nav-dropdown.active .dropdown-arrow {
    transform: rotate(180deg);
}

.nav-dropdown-menu {
    position: absolute;
    top: 100%;
    left: 0;
    margin-top: var(--spacing-xs);
    background: var(--bg-primary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-xl);
    min-width: 220px;
    opacity: 0;
    visibility: hidden;
    transform: translateY(-10px);
    transition: all var(--transition-base);
    z-index: 1000;
    padding: var(--spacing-sm) 0;
}

.nav-dropdown:hover .nav-dropdown-menu,
.nav-dropdown.active .nav-dropdown-menu {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.nav-dropdown-menu a {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-sm) var(--spacing-lg);
    color: var(--text-secondary);
    text-decoration: none;
    transition: all var(--transition-fast);
    white-space: nowrap;
    border-radius: 0;
}

.nav-dropdown-menu a:hover,
.nav-dropdown-menu a.active {
    color: var(--primary);
    background: var(--gray-50);
}

.nav-dropdown-menu a i {
    width: 20px;
    text-align: center;
    font-size: 0.875rem;
}

/* Menu Toggle Mobile */
.menu-toggle {
    display: none;
    background: none;
    border: none;
    font-size: 1.5rem;
    color: var(--text-primary);
    cursor: pointer;
    padding: var(--spacing-sm);
    border-radius: var(--radius-md);
    transition: background var(--transition-fast);
}

.menu-toggle:hover {
    background: var(--gray-100);
}

/* Main Content */
main {
    min-height: calc(100vh - 200px);
    padding: var(--spacing-2xl) var(--spacing-xl);
    animation: fadeIn 0.6s ease-out;
    position: relative;
    z-index: 1;
}

@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.container,
.container-fluid {
    max-width: 1400px;
    margin: 0 auto;
}

/* Cards */
.card {
    background: var(--bg-primary);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-md);
    padding: var(--spacing-xl);
    border: 1px solid var(--border-color);
    transition: all var(--transition-base);
    margin-bottom: var(--spacing-lg);
    color: var(--text-primary);
}

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

.card-header {
    font-size: 1.25rem;
    font-weight: 600;
    margin-bottom: var(--spacing-md);
    color: var(--text-primary);
    padding-bottom: var(--spacing-md);
    border-bottom: 2px solid var(--border-color);
}

/* Forms */
.form-control {
    width: 100%;
    padding: 0.75rem 1rem;
    font-size: 1rem;
    border: 2px solid var(--border-color);
    border-radius: var(--radius-md);
    background: var(--bg-primary);
    color: var(--text-primary);
    transition: all var(--transition-fast);
    font-family: var(--font-sans);
}

.form-select {
    width: 100%;
    padding: 0.75rem 2.5rem 0.75rem 1rem;
    font-size: 1rem;
    border: 2px solid var(--border-color);
    border-radius: var(--radius-md);
    background: var(--bg-primary);
    background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 16 16'%3e%3cpath fill='none' stroke='%236b7280' stroke-linecap='round' stroke-linejoin='round' stroke-width='2' d='M2 5l6 6 6-6'/%3e%3c/svg%3e");
    background-repeat: no-repeat;
    background-position: right 0.75rem center;
    background-size: 16px 12px;
    color: var(--text-primary);
    transition: all var(--transition-fast);
    font-family: var(--font-sans);
    appearance: none;
    -webkit-appearance: none;
    -moz-appearance: none;
}

.form-control:focus,
.form-select:focus {
    outline: 2px solid var(--primary);
    outline-offset: 2px;
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.1);
}

.form-label {
    display: block;
    font-weight: 500;
    color: var(--text-primary);
    margin-bottom: var(--spacing-sm);
    font-size: 0.95rem;
}

.form-check-input:checked {
    background-color: var(--primary);
    border-color: var(--primary);
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-sm);
    padding: 0.75rem 1.5rem;
    font-size: 1rem;
    font-weight: 600;
    border: none;
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: all var(--transition-fast);
    text-decoration: none;
    font-family: var(--font-sans);
    white-space: nowrap;
}

.btn-primary {
    background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
    color: white;
    box-shadow: var(--shadow-md);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
    color: white;
}

.btn-outline-primary {
    background: transparent;
    color: var(--primary);
    border: 2px solid var(--primary);
}

.btn-outline-primary:hover {
    background: var(--primary);
    color: white;
    transform: translateY(-2px);
}

.btn-secondary {
    background: var(--gray-200);
    color: var(--text-primary);
}

.btn-secondary:hover {
    background: var(--gray-300);
    transform: translateY(-2px);
}

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

.btn-success:hover {
    background: #059669;
    transform: translateY(-2px);
}

.btn-sm {
    padding: 0.5rem 1rem;
    font-size: 0.875rem;
}

.btn-lg {
    padding: 1rem 2rem;
    font-size: 1.125rem;
}

/* Simulator Header */
.simulator-header {
    text-align: center;
    margin-bottom: var(--spacing-2xl);
    padding: var(--spacing-xl) 0;
}

.simulator-header h1 {
    font-size: 2.5rem;
    margin-bottom: var(--spacing-sm);
    color: var(--text-primary);
}

.simulator-header .subtitle {
    font-size: 1.125rem;
    color: var(--text-secondary);
    margin: 0;
}

/* Simulator Layout */
.simulator-layout {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-xl);
    align-items: start;
}

.simulator-form-column {
    position: sticky;
    top: calc(var(--spacing-xl) + 80px);
    align-self: start;
}

.simulator-results-column {
    min-height: 400px;
}

/* Simulator Form Card */
.simulator-form-card {
    position: relative;
}

.simulator-form-card .card-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: var(--spacing-sm);
    font-size: 1.25rem;
    font-weight: 600;
    color: var(--text-primary);
    padding-bottom: var(--spacing-md);
    border-bottom: 2px solid var(--border-color);
    margin-bottom: var(--spacing-lg);
}

.btn-toggle-form {
    background: none;
    border: none;
    color: var(--text-secondary);
    cursor: pointer;
    padding: var(--spacing-xs) var(--spacing-sm);
    border-radius: var(--radius-md);
    transition: all var(--transition-fast);
    font-size: 1rem;
    display: flex;
    align-items: center;
    justify-content: center;
}

.btn-toggle-form:hover {
    background: var(--gray-100);
    color: var(--primary);
}

.btn-toggle-form:focus-visible {
    outline: 2px solid var(--primary);
    outline-offset: 2px;
}

.simulator-form-card .card-body {
    transition: max-height 0.4s cubic-bezier(0.4, 0, 0.2, 1), 
                opacity 0.3s ease-out,
                padding 0.3s ease-out,
                margin 0.3s ease-out;
    overflow: hidden;
    max-height: 5000px;
    opacity: 1;
}

.simulator-form-card .card-body.collapsed {
    max-height: 0;
    opacity: 0;
    padding-top: 0;
    padding-bottom: 0;
    margin-top: 0;
    margin-bottom: 0;
    overflow: hidden;
}

/* Calc Mode Selector */
.calc-mode-selector {
    margin-bottom: var(--spacing-xl);
    padding-bottom: var(--spacing-lg);
    border-bottom: 1px solid var(--border-color);
}

.calc-mode-selector .btn-group {
    display: flex;
    gap: var(--spacing-sm);
    width: 100%;
}

.calc-mode-selector .btn {
    flex: 1;
    padding: var(--spacing-md);
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-sm);
}

.mode-description {
    display: block;
    margin-top: var(--spacing-sm);
    color: var(--text-secondary);
    font-size: 0.875rem;
    text-align: center;
}

/* Presets Section */
.presets-section {
    margin-bottom: var(--spacing-xl);
    padding-bottom: var(--spacing-lg);
    border-bottom: 1px solid var(--border-color);
}

.presets-section h5 {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-md);
    font-size: 1rem;
    color: var(--text-primary);
}

.presets-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(140px, 1fr));
    gap: var(--spacing-md);
}

.preset-btn {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: var(--spacing-xs);
    padding: var(--spacing-md);
    border: 2px solid var(--border-color);
    background: var(--bg-primary);
    color: var(--text-primary);
    border-radius: var(--radius-lg);
    font-weight: 500;
    transition: all var(--transition-base);
    cursor: pointer;
    text-align: center;
}

.preset-btn:hover {
    border-color: var(--primary);
    background: var(--primary);
    color: white;
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.preset-btn i {
    font-size: 1.5rem;
    margin-bottom: var(--spacing-xs);
}

.preset-name {
    display: block;
    font-weight: 600;
    font-size: 0.9rem;
}

.preset-desc {
    display: block;
    font-size: 0.75rem;
    opacity: 0.8;
}

/* Form Grid */
.simulator-form {
    margin-top: var(--spacing-lg);
}

.form-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: var(--spacing-lg);
    margin-bottom: var(--spacing-lg);
}

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

.form-label {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    font-weight: 500;
    color: var(--text-primary);
    margin-bottom: var(--spacing-sm);
    font-size: 0.95rem;
}

.form-label i {
    color: var(--primary);
    font-size: 0.875rem;
}

.email-group {
    margin-top: var(--spacing-lg);
    padding-top: var(--spacing-lg);
    border-top: 1px solid var(--border-color);
}

.objectif-section {
    margin-top: var(--spacing-lg);
    padding: var(--spacing-lg);
    background: var(--bg-tertiary);
    border-radius: var(--radius-lg);
    border: 2px dashed var(--primary);
}

.w-100 {
    width: 100%;
}

/* Results Section */
.results-card {
    background: linear-gradient(135deg, var(--bg-primary) 0%, var(--bg-tertiary) 100%);
    border: 2px solid var(--border-color);
}

.results-header {
    background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
    color: white;
    padding: var(--spacing-lg);
    border-radius: var(--radius-lg) var(--radius-lg) 0 0;
    margin: calc(-1 * var(--spacing-xl)) calc(-1 * var(--spacing-xl)) var(--spacing-xl);
    text-align: center;
}

.results-header h2 {
    color: white;
    margin: 0;
    font-size: 1.5rem;
}

.results-header p {
    color: rgba(255, 255, 255, 0.9);
    margin: var(--spacing-sm) 0 0;
}

.results-list {
    padding: 0;
}

.result-item {
    background: var(--bg-primary);
    border-radius: var(--radius-lg);
    margin-bottom: var(--spacing-md);
    padding: var(--spacing-lg);
    border-left: 4px solid var(--primary);
    box-shadow: var(--shadow-sm);
    transition: all var(--transition-base);
}

.result-item:hover {
    transform: translateX(4px);
    box-shadow: var(--shadow-md);
}

.result-item strong {
    display: block;
    font-size: 1.5rem;
    color: var(--primary);
    margin-bottom: var(--spacing-xs);
}

.result-item.highlight {
    background: linear-gradient(135deg, #4a5568 0%, #2d3748 100%);
    color: white;
    border-left: none;
    padding: var(--spacing-xl);
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.2);
}

.result-item.highlight .result-label {
    color: rgba(255, 255, 255, 0.95);
    font-size: 0.875rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    margin-bottom: var(--spacing-sm);
    display: block;
}

.result-item.highlight strong {
    color: white;
    font-size: 2.5rem;
    font-weight: 700;
    text-shadow: 0 2px 8px rgba(0, 0, 0, 0.3);
    display: block;
    line-height: 1.2;
    letter-spacing: -0.5px;
}

.result-item.highlight .tooltip-icon {
    color: rgba(255, 255, 255, 0.9);
    filter: drop-shadow(0 1px 2px rgba(0, 0, 0, 0.3));
}

.result-item .result-label {
    color: var(--text-secondary);
    font-size: 0.9rem;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    margin-bottom: var(--spacing-xs);
}

/* Chart Container */
.chart-container {
    background: var(--bg-primary);
    padding: var(--spacing-lg);
    border-radius: var(--radius-lg);
    margin-top: var(--spacing-lg);
    box-shadow: var(--shadow-sm);
}

.chart-container canvas {
    max-height: 400px;
}

/* Invalid Feedback */
.invalid-feedback {
    display: block;
    color: var(--error);
    font-size: 0.875rem;
    margin-top: var(--spacing-xs);
}

.form-control.is-invalid {
    border-color: var(--error);
}

.form-control.is-invalid:focus {
    border-color: var(--error);
    box-shadow: 0 0 0 3px rgba(239, 68, 68, 0.1);
}

/* Table Styles */
.table {
    width: 100%;
    border-collapse: collapse;
    margin-bottom: var(--spacing-lg);
    background: var(--bg-primary);
    border-radius: var(--radius-lg);
    overflow: hidden;
}

.table thead {
    background: var(--bg-tertiary);
}

.table thead th {
    padding: var(--spacing-md);
    text-align: left;
    font-weight: 600;
    color: var(--text-primary);
    border-bottom: 2px solid var(--border-color);
    font-size: 0.875rem;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    background: var(--bg-tertiary);
}

.table tbody td {
    padding: var(--spacing-md);
    border-bottom: 1px solid var(--border-color);
    color: var(--text-secondary);
    font-size: 0.9rem;
    background: var(--bg-primary);
}

.table tbody tr {
    background: var(--bg-primary);
}

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

.table-striped tbody tr:nth-of-type(odd) {
    background: var(--bg-primary);
}

.table-striped tbody tr:nth-of-type(even) {
    background: var(--bg-tertiary);
}

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

.table-responsive {
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
}

/* Amortization Preview */
.amortization-preview {
    margin-top: var(--spacing-xl);
    padding-top: var(--spacing-xl);
    border-top: 1px solid var(--border-color);
}

.amortization-preview h5 {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    color: var(--text-primary);
    margin-bottom: var(--spacing-md);
}

.form-text {
    display: block;
    margin-top: var(--spacing-xs);
    font-size: 0.875rem;
    color: var(--text-tertiary);
}

/* List Group */
.list-group {
    list-style: none;
    padding: 0;
}

.list-group-item {
    padding: var(--spacing-lg);
    border-bottom: 1px solid var(--gray-200);
    background: var(--bg-primary);
    transition: background var(--transition-fast);
    border-radius: var(--radius-md);
    margin-bottom: var(--spacing-sm);
}

.list-group-item:hover {
    background: var(--gray-50);
}

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

.list-group-item strong {
    color: var(--primary);
    font-size: 1.25rem;
}

.result-item {
    animation: slideInUp 0.6s ease-out;
    animation-fill-mode: both;
}

.result-item:nth-child(1) { animation-delay: 0.1s; }
.result-item:nth-child(2) { animation-delay: 0.2s; }
.result-item:nth-child(3) { animation-delay: 0.3s; }
.result-item:nth-child(4) { animation-delay: 0.4s; }
.result-item:nth-child(5) { animation-delay: 0.5s; }

@keyframes slideInUp {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* Alerts */
.alert {
    padding: var(--spacing-md) var(--spacing-lg);
    border-radius: var(--radius-lg);
    margin-bottom: var(--spacing-lg);
    border: 1px solid;
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
}

.alert-success {
    background: #d1fae5;
    border-color: var(--success);
    color: #065f46;
}

.alert-danger {
    background: #fee2e2;
    border-color: var(--error);
    color: #991b1b;
}

.alert-info {
    background: #dbeafe;
    border-color: var(--info);
    color: #1e40af;
}

/* Tooltips */
.tooltip-container {
    position: relative;
    display: inline-block;
    margin-left: var(--spacing-xs);
    cursor: help;
}

.tooltip-icon {
    color: var(--gray-400);
    font-size: 0.875rem;
}

.tooltip-text {
    visibility: hidden;
    width: 250px;
    background: var(--gray-800);
    color: white;
    text-align: center;
    border-radius: var(--radius-md);
    padding: var(--spacing-sm) var(--spacing-md);
    position: absolute;
    z-index: 1000;
    bottom: 125%;
    left: 50%;
    margin-left: -125px;
    opacity: 0;
    transition: opacity var(--transition-base);
    font-size: 0.875rem;
    box-shadow: var(--shadow-lg);
}

.tooltip-container:hover .tooltip-text {
    visibility: visible;
    opacity: 1;
}

/* Navigation Icons */
nav a i {
    margin-right: var(--spacing-xs);
    font-size: 0.9rem;
}

nav a span {
    display: inline;
}

/* Language Switcher */
.language-switcher {
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
    padding-left: var(--spacing-md);
    border-left: 1px solid var(--gray-200);
    margin-left: var(--spacing-md);
}

.language-switcher a {
    padding: var(--spacing-xs);
    border-radius: var(--radius-md);
    transition: all var(--transition-fast);
    opacity: 0.7;
}

.language-switcher a:hover,
.language-switcher a.active {
    opacity: 1;
    background: var(--bg-tertiary);
    transform: scale(1.1);
}

.language-switcher img {
    display: block;
    border-radius: var(--radius-sm);
}

/* Hero Section */
.hero-section {
    background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
    color: white;
    padding: var(--spacing-2xl) var(--spacing-xl);
    margin: calc(-1 * var(--spacing-2xl)) calc(-1 * var(--spacing-xl)) var(--spacing-2xl);
    border-radius: 0 0 var(--radius-2xl) var(--radius-2xl);
    position: relative;
    overflow: hidden;
}

.hero-section::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: url("data:image/svg+xml,%3Csvg width='60' height='60' viewBox='0 0 60 60' xmlns='http://www.w3.org/2000/svg'%3E%3Cg fill='none' fill-rule='evenodd'%3E%3Cg fill='%23ffffff' fill-opacity='0.05'%3E%3Cpath d='M36 34v-4h-2v4h-4v2h4v4h2v-4h4v-2h-4zm0-30V0h-2v4h-4v2h4v4h2V6h4V4h-4zM6 34v-4H4v4H0v2h4v4h2v-4h4v-2H6zM6 4V0H4v4H0v2h4v4h2V6h4V4H6z'/%3E%3C/g%3E%3C/g%3E%3C/svg%3E");
    opacity: 0.3;
}

.hero-content {
    position: relative;
    z-index: 1;
    text-align: center;
    max-width: 800px;
    margin: 0 auto;
}

.hero-title {
    font-size: 3rem;
    font-weight: 800;
    margin-bottom: var(--spacing-lg);
    color: white;
    line-height: 1.2;
}

.hero-description {
    font-size: 1.25rem;
    margin-bottom: var(--spacing-xl);
    color: rgba(255, 255, 255, 0.9);
    line-height: 1.6;
}

/* Simulators Section */
.simulators-section {
    padding: var(--spacing-2xl) 0;
    background: var(--bg-secondary);
}

.section-title {
    text-align: center;
    font-size: 2.5rem;
    margin-bottom: var(--spacing-md);
    color: var(--text-primary);
}

.section-subtitle {
    text-align: center;
    font-size: 1.125rem;
    color: var(--text-secondary);
    margin-bottom: var(--spacing-2xl);
}

.simulators-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: var(--spacing-xl);
    margin-top: var(--spacing-xl);
}

.simulator-card {
    background: var(--bg-primary);
    padding: var(--spacing-xl);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-md);
    border: 2px solid var(--border-color);
    transition: all var(--transition-base);
    text-decoration: none;
    color: inherit;
    display: flex;
    flex-direction: column;
    height: 100%;
}

.simulator-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-xl);
    border-color: var(--primary);
    text-decoration: none;
    color: inherit;
}

.simulator-icon {
    width: 80px;
    height: 80px;
    margin: 0 auto var(--spacing-lg);
    background: linear-gradient(135deg, var(--primary) 0%, var(--primary-light) 100%);
    border-radius: var(--radius-full);
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 2rem;
    box-shadow: var(--shadow-md);
}

.simulator-card h3 {
    font-size: 1.5rem;
    margin-bottom: var(--spacing-md);
    color: var(--text-primary);
    text-align: center;
}

.simulator-card p {
    color: var(--text-secondary);
    margin-bottom: var(--spacing-lg);
    flex-grow: 1;
    line-height: 1.6;
}

.simulator-features {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-lg);
    padding: var(--spacing-md);
    background: var(--bg-tertiary);
    border-radius: var(--radius-md);
}

.feature-tag {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-xs);
    padding: var(--spacing-xs) var(--spacing-sm);
    background: var(--bg-primary);
    border-radius: var(--radius-sm);
    font-size: 0.875rem;
    color: var(--text-secondary);
}

.feature-tag i {
    color: var(--success);
    font-size: 0.75rem;
}

.simulator-cta {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-md);
    background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
    color: white;
    border-radius: var(--radius-md);
    font-weight: 600;
    transition: all var(--transition-fast);
    margin-top: auto;
}

.simulator-card:hover .simulator-cta {
    transform: scale(1.02);
    box-shadow: var(--shadow-md);
}

/* Features Section */
.features-section {
    padding: var(--spacing-2xl) 0;
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--spacing-xl);
    margin-top: var(--spacing-2xl);
}

.feature-card {
    background: var(--bg-primary);
    padding: var(--spacing-xl);
    border-radius: var(--radius-xl);
    box-shadow: var(--shadow-md);
    border: 1px solid var(--border-color);
    transition: all var(--transition-base);
    text-align: center;
}

.feature-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-xl);
    border-color: var(--primary);
}

.feature-icon {
    width: 64px;
    height: 64px;
    margin: 0 auto var(--spacing-md);
    background: linear-gradient(135deg, var(--primary) 0%, var(--primary-light) 100%);
    border-radius: var(--radius-full);
        display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 1.5rem;
}

.feature-card h3 {
    font-size: 1.25rem;
    margin-bottom: var(--spacing-sm);
    color: var(--text-primary);
}

.feature-card p {
    color: var(--text-secondary);
    margin: 0;
}

/* Footer */
footer {
    background: var(--gray-900);
    color: var(--gray-300);
    padding: var(--spacing-2xl) var(--spacing-xl);
    margin-top: var(--spacing-2xl);
}

.footer-container {
    max-width: 1400px;
    margin: 0 auto;
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--spacing-xl);
    margin-bottom: var(--spacing-xl);
}

.footer-section h4 {
    color: white;
    margin-bottom: var(--spacing-md);
    font-size: 1.125rem;
}

.footer-section p {
    color: var(--gray-400);
    margin: 0;
    line-height: 1.6;
}

.footer-section ul {
    list-style: none;
    padding: 0;
}

.footer-section ul li {
    margin-bottom: var(--spacing-sm);
}

.footer-section ul li a {
    color: var(--gray-400);
    transition: color var(--transition-fast);
}

.footer-section ul li a:hover {
    color: var(--primary-light);
}

.footer-bottom {
    border-top: 1px solid var(--border-color);
    padding-top: var(--spacing-lg);
    text-align: center;
}

.footer-bottom p {
    margin: 0;
    color: var(--gray-500);
    font-size: 0.9rem;
}

/* Cookie Banner */
#cookie-banner {
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    background: linear-gradient(135deg, var(--gray-900) 0%, var(--gray-800) 100%);
    color: white;
    padding: var(--spacing-xl);
    box-shadow: 0 -4px 20px rgba(0, 0, 0, 0.3);
    z-index: 9999;
    transform: translateY(100%);
    transition: transform var(--transition-slow);
    border-top: 3px solid var(--primary);
}

#cookie-banner.show {
    transform: translateY(0);
}

.cookie-content {
    max-width: 1400px;
    margin: 0 auto;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: var(--spacing-lg);
    flex-wrap: wrap;
}

.cookie-text {
    flex: 1;
    min-width: 300px;
}

.cookie-text h4 {
    margin: 0 0 var(--spacing-sm) 0;
    color: var(--primary-light);
    font-size: 1.1rem;
}

.cookie-text p {
    margin: 0;
    font-size: 0.9rem;
    line-height: 1.6;
    opacity: 0.9;
    color: var(--gray-300);
}

.cookie-buttons {
    display: flex;
    gap: var(--spacing-md);
    flex-wrap: wrap;
}

.cookie-btn {
    padding: 0.75rem 1.5rem;
    border: none;
    border-radius: var(--radius-full);
    cursor: pointer;
    font-weight: 600;
    font-size: 0.9rem;
    transition: all var(--transition-fast);
    text-decoration: none;
    display: inline-block;
    text-align: center;
    min-width: 100px;
}

.cookie-btn.accept {
    background: var(--success);
    color: white;
}

.cookie-btn.accept:hover {
    background: #059669;
    transform: translateY(-2px);
}

.cookie-btn.decline {
    background: transparent;
    color: var(--gray-300);
    border: 2px solid var(--gray-600);
}

.cookie-btn.decline:hover {
    background: var(--gray-700);
    color: white;
}

.cookie-btn.settings {
    background: var(--primary);
    color: white;
}

.cookie-btn.settings:hover {
    background: var(--primary-dark);
}

/* Ads Placeholder */
.ads-placeholder,
.ad-banner {
    background: var(--bg-tertiary);
    text-align: center;
    padding: var(--spacing-xl);
    border: 2px dashed var(--border-color);
    border-radius: var(--radius-lg);
    color: var(--text-tertiary);
    margin: var(--spacing-xl) 0;
    min-height: 100px;
    display: flex;
    align-items: center;
    justify-content: center;
}

/* Loading States */
.loading {
    position: relative;
    overflow: hidden;
}

.loading::after {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.6), transparent);
    animation: loading 1.5s infinite;
}

@keyframes loading {
    0% { left: -100%; }
    100% { left: 100%; }
}

/* Responsive Design */
@media (max-width: 1024px) {
    .header-container {
        padding: var(--spacing-md) var(--spacing-lg);
    }
    
    main {
        padding: var(--spacing-xl) var(--spacing-lg);
    }
    
    h1 {
        font-size: 2rem;
    }
    
    .simulator-layout {
        grid-template-columns: 1fr;
        gap: var(--spacing-lg);
    }
    
    .simulator-form-column {
        position: relative;
        top: 0;
    }
    
    .simulators-grid {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 768px) {
    :root {
        font-size: 15px;
    }
    
    .header-container {
        padding: var(--spacing-md);
    }
    
    nav {
        display: none;
        position: absolute;
        top: 100%;
        left: 0;
        right: 0;
        background: var(--bg-primary);
        flex-direction: column;
        padding: var(--spacing-lg);
        box-shadow: var(--shadow-lg);
        border-top: 1px solid var(--border-color);
    }
    
    nav.active {
        display: flex;
    }
    
    nav a {
        width: 100%;
        padding: var(--spacing-md);
        border-radius: var(--radius-md);
    }
    
    .nav-dropdown {
        width: 100%;
    }
    
    .nav-dropdown-toggle {
        width: 100%;
        justify-content: space-between;
    }
    
    .nav-dropdown-menu {
        position: static;
        opacity: 1;
        visibility: visible;
        transform: none;
        box-shadow: none;
        border: none;
        border-top: 1px solid var(--border-color);
        margin-top: 0;
        padding: 0;
        background: var(--gray-50);
    }
    
    .nav-dropdown-menu a {
        padding-left: calc(var(--spacing-lg) + var(--spacing-md));
    }
    
    .language-switcher {
        border-left: none;
        border-top: 1px solid var(--border-color);
        margin-left: 0;
        margin-top: var(--spacing-md);
        padding-left: 0;
        padding-top: var(--spacing-md);
        width: 100%;
        justify-content: center;
    }
    
    .menu-toggle {
        display: block;
    }
    
    main {
        padding: var(--spacing-lg) var(--spacing-md);
    }
    
    .hero-section {
        margin: calc(-1 * var(--spacing-lg)) calc(-1 * var(--spacing-md)) var(--spacing-lg);
        padding: var(--spacing-xl) var(--spacing-md);
        border-radius: 0 0 var(--radius-xl) var(--radius-xl);
    }
    
    .hero-title {
        font-size: 2rem;
    }
    
    .hero-description {
        font-size: 1.125rem;
    }
    
    h1 {
        font-size: 1.75rem;
    }
    
    .section-title {
        font-size: 2rem;
    }
    
    .section-subtitle {
        font-size: 1rem;
    }
    
    .features-grid {
        grid-template-columns: 1fr;
        gap: var(--spacing-lg);
    }
    
    .simulators-grid {
        grid-template-columns: 1fr;
        gap: var(--spacing-lg);
    }
    
    .card {
        padding: var(--spacing-lg);
    }
    
    .footer-content {
        grid-template-columns: 1fr;
    }
    
    .cookie-content {
        flex-direction: column;
        text-align: center;
    }
    
    .cookie-buttons {
        justify-content: center;
        width: 100%;
    }
    
    .cookie-btn {
        flex: 1;
        min-width: 80px;
    }
}

@media (max-width: 480px) {
    h1 {
        font-size: 1.5rem;
    }
    
    .btn {
        width: 100%;
        justify-content: center;
    }
    
    .preset-btn {
        width: 100%;
    }
}

/* Social Share Buttons */
.social-share-section {
    margin: var(--spacing-xl) 0;
    padding: var(--spacing-lg);
    background: var(--bg-tertiary);
    border-radius: var(--radius-lg);
    border: 1px solid var(--border-color);
}

.social-share-section h5 {
    margin-bottom: var(--spacing-md);
    color: var(--text-primary);
    font-size: 1.1rem;
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.social-share-buttons {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-md);
}

.social-share-btn {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-xs);
    padding: var(--spacing-sm) var(--spacing-md);
    border-radius: var(--radius-md);
    font-weight: 500;
    font-size: 0.9rem;
    text-decoration: none;
    transition: all var(--transition-fast);
    border: none;
    cursor: pointer;
    box-shadow: var(--shadow-sm);
}

.social-share-btn:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.social-share-btn i {
    font-size: 1rem;
}

.social-share-btn.facebook {
    background: #1877f2;
    color: white;
}

.social-share-btn.facebook:hover {
    background: #166fe5;
    color: white;
}

.social-share-btn.twitter {
    background: #1da1f2;
    color: white;
}

.social-share-btn.twitter:hover {
    background: #1a91da;
    color: white;
}

.social-share-btn.linkedin {
    background: #0077b5;
    color: white;
}

.social-share-btn.linkedin:hover {
    background: #006399;
    color: white;
}

.social-share-btn.copy-link {
    background: var(--gray-600);
    color: white;
}

.social-share-btn.copy-link:hover {
    background: var(--gray-700);
    color: white;
}

.social-share-btn.copy-link.copied {
    background: var(--success);
    color: white;
}

.export-buttons {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-sm);
    margin-top: var(--spacing-md);
    padding-top: var(--spacing-md);
    border-top: 1px solid var(--border-color);
}

.export-btn {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-xs);
    padding: var(--spacing-sm) var(--spacing-md);
    border-radius: var(--radius-md);
    font-weight: 500;
    font-size: 0.9rem;
    text-decoration: none;
    transition: all var(--transition-fast);
    border: 1px solid var(--border-color);
    background: var(--bg-primary);
    color: var(--text-primary);
    cursor: pointer;
}

.export-btn:hover {
    background: var(--bg-tertiary);
    border-color: var(--primary);
    color: var(--primary);
    transform: translateY(-1px);
    box-shadow: var(--shadow-sm);
}

.export-btn i {
    font-size: 1rem;
}

/* Utility Classes */
.text-center {
    text-align: center;
}

.mt-1 { margin-top: var(--spacing-xs); }
.mt-2 { margin-top: var(--spacing-sm); }
.mt-3 { margin-top: var(--spacing-md); }
.mt-4 { margin-top: var(--spacing-lg); }
.mt-5 { margin-top: var(--spacing-xl); }

.mb-1 { margin-bottom: var(--spacing-xs); }
.mb-2 { margin-bottom: var(--spacing-sm); }
.mb-3 { margin-bottom: var(--spacing-md); }
.mb-4 { margin-bottom: var(--spacing-lg); }
.mb-5 { margin-bottom: var(--spacing-xl); }

.p-1 { padding: var(--spacing-xs); }
.p-2 { padding: var(--spacing-sm); }
.p-3 { padding: var(--spacing-md); }
.p-4 { padding: var(--spacing-lg); }
.p-5 { padding: var(--spacing-xl); }

/* ============================================
   ACCESSIBILITÉ
   ============================================ */

/* Screen reader only - Texte caché visuellement mais accessible aux lecteurs d'écran */
.sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border-width: 0;
}

/* Focus visible pour tous les éléments interactifs */
*:focus-visible {
    outline: 2px solid var(--primary);
    outline-offset: 2px;
    border-radius: var(--radius-sm);
}

/* Focus pour les boutons */
.btn:focus-visible,
button:focus-visible {
    outline: 3px solid var(--primary);
    outline-offset: 2px;
    box-shadow: 0 0 0 4px rgba(99, 102, 241, 0.2);
}

/* Focus pour les liens */
a:focus-visible {
    outline: 2px solid var(--primary);
    outline-offset: 2px;
    border-radius: var(--radius-sm);
}

/* Focus pour les éléments de navigation */
nav a:focus-visible,
.nav-dropdown-toggle:focus-visible {
    background-color: var(--gray-100);
    outline: 2px solid var(--primary);
    outline-offset: 2px;
}

/* États invalides avec meilleur contraste */
.form-control[aria-invalid="true"],
.form-control.is-invalid {
    border-color: var(--error);
    background-color: #fef2f2;
}

.form-control[aria-invalid="true"]:focus,
.form-control.is-invalid:focus {
    outline-color: var(--error);
    border-color: var(--error);
    box-shadow: 0 0 0 3px rgba(239, 68, 68, 0.1);
}

/* Messages d'erreur accessibles */
.invalid-feedback {
    color: var(--error);
    font-size: 0.875rem;
    margin-top: var(--spacing-xs);
    display: block;
}

/* Amélioration du contraste pour les résultats */
.result-item strong {
    color: var(--text-primary);
    font-weight: 700;
}

/* Contraste amélioré pour les tooltips */
.tooltip-icon {
    color: var(--primary);
}

.tooltip-icon:focus-visible {
    outline: 2px solid var(--primary);
    outline-offset: 2px;
    border-radius: 50%;
}

/* Skip to main content link (pour navigation au clavier) */
.skip-to-main {
    position: absolute;
    top: -40px;
    left: 0;
    background: var(--primary);
    color: white;
    padding: var(--spacing-sm) var(--spacing-md);
    text-decoration: none;
    z-index: 10000;
    border-radius: 0 0 var(--radius-md) 0;
}

.skip-to-main:focus {
    top: 0;
}

/* Amélioration du contraste pour les graphiques */
.chart-wrapper {
    position: relative;
}

.chart-wrapper canvas {
    max-width: 100%;
    height: auto;
}

/* Amélioration de la navigation au clavier pour les menus déroulants */
.nav-dropdown-toggle:focus-visible + .nav-dropdown-menu {
    display: block;
}

/* Amélioration du contraste pour les boutons de préréglages */
.preset-btn:focus-visible {
    outline: 3px solid var(--primary);
    outline-offset: 3px;
    box-shadow: 0 0 0 6px rgba(99, 102, 241, 0.15);
}

/* Amélioration du contraste pour les boutons de partage */
.social-share-btn:focus-visible,
.export-btn:focus-visible {
    outline: 3px solid var(--primary);
    outline-offset: 2px;
    box-shadow: 0 0 0 4px rgba(99, 102, 241, 0.2);
}

/* Région live pour les résultats */
[role="region"][aria-live] {
    min-height: 1px;
}

/* Amélioration du contraste pour les alertes */
.alert {
    border-left: 4px solid;
}

.alert-info {
    border-left-color: var(--info);
    background-color: #eff6ff;
    color: #1e40af;
}

.alert-danger {
    border-left-color: var(--error);
    background-color: #fef2f2;
    color: #991b1b;
}

/* Amélioration du contraste pour les liens dans les alertes */
.alert a {
    color: inherit;
    text-decoration: underline;
    font-weight: 600;
}

.alert a:focus-visible {
    outline: 2px solid currentColor;
    outline-offset: 2px;
}

/* ============================================
   THÈME SOMBRE
   ============================================ */

[data-theme="dark"] {
    /* Cartes */
    --card-bg: #1f1f1f;
    --card-border: #374151;
}

/* Accordéon Bootstrap - Thème sombre */
[data-theme="dark"] .accordion {
    --bs-accordion-color: var(--text-primary);
    --bs-accordion-bg: transparent;
    --bs-accordion-border-color: var(--border-color);
    --bs-accordion-btn-color: var(--text-primary);
    --bs-accordion-btn-bg: var(--card-bg);
    --bs-accordion-btn-active-color: var(--primary);
    --bs-accordion-btn-active-bg: var(--bg-tertiary);
    --bs-accordion-btn-focus-border-color: var(--primary);
    --bs-accordion-btn-focus-box-shadow: 0 0 0 0.25rem rgba(99, 102, 241, 0.25);
    --bs-accordion-body-padding-x: 1.5rem;
    --bs-accordion-body-padding-y: 1.25rem;
    --bs-accordion-active-color: var(--text-primary);
}

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

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

[data-theme="dark"] .accordion-button:not(.collapsed) {
    background-color: var(--bg-tertiary);
    color: var(--primary);
    box-shadow: inset 0 -1px 0 var(--border-color);
}

[data-theme="dark"] .accordion-button:focus {
    border-color: var(--primary);
    box-shadow: 0 0 0 0.25rem rgba(99, 102, 241, 0.25);
}

[data-theme="dark"] .accordion-button::after {
    filter: brightness(0) invert(1);
}

[data-theme="dark"] .accordion-button:not(.collapsed)::after {
    filter: brightness(0) saturate(100%) invert(64%) sepia(93%) saturate(1352%) hue-rotate(228deg) brightness(99%) contrast(99%);
}

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

[data-theme="dark"] .accordion-body h5 {
    color: var(--text-primary);
}

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

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

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

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

[data-theme="dark"] .results-card {
    background: linear-gradient(135deg, var(--card-bg) 0%, var(--bg-tertiary) 100%);
    border-color: var(--card-border);
}

/* Formulaires */
[data-theme="dark"] .form-control {
    background: var(--input-bg);
    border-color: var(--input-border);
    color: var(--input-text);
}

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

[data-theme="dark"] .form-control::placeholder {
    color: var(--text-tertiary);
}

/* Boutons */
[data-theme="dark"] .btn-outline-primary {
    border-color: var(--primary);
    color: var(--primary);
}

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

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

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

/* Navigation */
[data-theme="dark"] nav a {
    color: var(--text-secondary);
}

[data-theme="dark"] nav a:hover,
[data-theme="dark"] nav a.active {
    background: var(--bg-tertiary);
    color: var(--primary);
}

[data-theme="dark"] .nav-dropdown-menu {
    background: var(--card-bg);
    border-color: var(--card-border);
}

[data-theme="dark"] .nav-dropdown-menu a {
    color: var(--text-secondary);
}

[data-theme="dark"] .nav-dropdown-menu a:hover,
[data-theme="dark"] .nav-dropdown-menu a.active {
    background: var(--bg-tertiary);
    color: var(--primary);
}

/* Préréglages */
[data-theme="dark"] .preset-btn {
    background: var(--card-bg);
    border-color: var(--card-border);
    color: var(--text-primary);
}

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

/* Sections */
[data-theme="dark"] .presets-section,
[data-theme="dark"] .calc-mode-selector {
    border-bottom-color: var(--border-color);
}

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

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

/* Résultats */
[data-theme="dark"] .result-item {
    background: var(--bg-tertiary);
    border-color: var(--border-color);
    color: var(--text-primary);
}

[data-theme="dark"] .result-item strong {
    color: var(--text-primary);
}

[data-theme="dark"] .result-item.highlight {
    background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
    color: white;
}

[data-theme="dark"] .result-item.highlight strong {
    color: white;
}

/* Tableaux */
[data-theme="dark"] .table {
    color: var(--text-primary);
}

[data-theme="dark"] .table-striped > tbody > tr:nth-of-type(odd) {
    background-color: var(--bg-tertiary);
}

[data-theme="dark"] .table-hover > tbody > tr:hover {
    background-color: var(--bg-tertiary);
}

/* Footer */
[data-theme="dark"] footer {
    background: var(--bg-primary);
    border-top-color: var(--border-color);
    color: var(--text-secondary);
}

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

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

[data-theme="dark"] footer a:hover {
    color: var(--primary);
}

/* Hero section */
[data-theme="dark"] .hero-section {
    background: linear-gradient(135deg, var(--bg-primary) 0%, var(--bg-tertiary) 100%);
    color: var(--text-primary);
}

/* Simulator header */
[data-theme="dark"] .simulator-header {
    color: var(--text-primary);
}

[data-theme="dark"] .simulator-header .subtitle {
    color: var(--text-secondary);
}

/* Sliders */
[data-theme="dark"] .slider-input {
    background: var(--border-color);
}

[data-theme="dark"] .slider-input:hover {
    background: var(--gray-600);
}

/* Slider track pour thème sombre */
[data-theme="dark"] .slider-input::-webkit-slider-runnable-track {
    background: var(--border-color);
    height: 8px;
    border-radius: var(--radius-full);
}

[data-theme="dark"] .slider-input::-moz-range-track {
    background: var(--border-color);
    height: 8px;
    border-radius: var(--radius-full);
}

/* Social share buttons */
[data-theme="dark"] .social-share-btn,
[data-theme="dark"] .export-btn {
    background: var(--card-bg);
    border-color: var(--card-border);
    color: var(--text-primary);
}

[data-theme="dark"] .social-share-btn:hover,
[data-theme="dark"] .export-btn:hover {
    background: var(--bg-tertiary);
    border-color: var(--primary);
    color: var(--primary);
}

/* Alertes */
[data-theme="dark"] .alert-info {
    background-color: rgba(59, 130, 246, 0.1);
    border-left-color: var(--info);
    color: #93c5fd;
}

[data-theme="dark"] .alert-danger {
    background-color: rgba(239, 68, 68, 0.1);
    border-left-color: var(--error);
    color: #fca5a5;
}

[data-theme="dark"] .alert-success {
    background-color: rgba(16, 185, 129, 0.1);
    border-left-color: var(--success);
    color: #6ee7b7;
}

/* Language switcher */
[data-theme="dark"] .language-switcher a {
    border-color: var(--border-color);
}

[data-theme="dark"] .language-switcher a:hover,
[data-theme="dark"] .language-switcher a.active {
    background: var(--bg-tertiary);
    border-color: var(--primary);
}

/* Breadcrumb */
[data-theme="dark"] .breadcrumb {
    background: var(--bg-tertiary);
}

[data-theme="dark"] .breadcrumb-item a {
    color: var(--text-secondary);
}

[data-theme="dark"] .breadcrumb-item.active {
    color: var(--text-primary);
}

/* Graphiques - Canvas reste visible */
[data-theme="dark"] canvas {
    background: var(--bg-primary);
    border-radius: var(--radius-md);
    padding: var(--spacing-sm);
}

/* Simulator cards sur homepage */
[data-theme="dark"] .simulator-card {
    background: var(--card-bg);
    border-color: var(--card-border);
}

[data-theme="dark"] .simulator-features {
    background: var(--bg-secondary);
}

[data-theme="dark"] .feature-tag {
    background: var(--card-bg);
    color: var(--text-secondary);
}

/* Main content */
[data-theme="dark"] main {
    background: var(--bg-secondary);
}

/* Container - s'assurer qu'il n'y a pas de background blanc */
[data-theme="dark"] .container,
[data-theme="dark"] .container-fluid {
    background: transparent;
}

/* Hero section */
[data-theme="dark"] .hero-section {
    background: linear-gradient(135deg, var(--bg-primary) 0%, var(--bg-tertiary) 100%);
    color: var(--text-primary);
}

[data-theme="dark"] .hero-section::before {
    opacity: 0.1;
}

[data-theme="dark"] .hero-title {
    color: var(--text-primary);
}

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

/* Simulators section */
[data-theme="dark"] .simulators-section {
    background: var(--bg-primary);
}

/* Features section */
[data-theme="dark"] .features-section {
    background: var(--bg-secondary);
}

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

/* Ad banner */
[data-theme="dark"] .ad-banner {
    background: var(--bg-tertiary);
    border-color: var(--border-color);
}

/* Social share section */
[data-theme="dark"] .social-share-section {
    background: var(--bg-tertiary);
    border-color: var(--border-color);
}

/* List group items */
[data-theme="dark"] .list-group-item {
    background: var(--bg-tertiary);
    border-color: var(--border-color);
    color: var(--text-primary);
}

/* Tooltip */
[data-theme="dark"] .tooltip-text {
    background: var(--card-bg);
    border-color: var(--card-border);
    color: var(--text-primary);
}

/* Select dropdown - Thème sombre */
[data-theme="dark"] .form-select {
    background-color: var(--input-bg) !important;
    background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 16 16'%3e%3cpath fill='none' stroke='%23d1d5db' stroke-linecap='round' stroke-linejoin='round' stroke-width='2' d='M2 5l6 6 6-6'/%3e%3c/svg%3e") !important;
    background-repeat: no-repeat !important;
    background-position: right 0.75rem center !important;
    background-size: 16px 12px !important;
    color: var(--input-text) !important;
    border-color: var(--input-border) !important;
    padding-right: 2.5rem !important;
    appearance: none !important;
    -webkit-appearance: none !important;
    -moz-appearance: none !important;
}

[data-theme="dark"] .form-select:focus {
    background-color: var(--input-bg) !important;
    background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 16 16'%3e%3cpath fill='none' stroke='%23d1d5db' stroke-linecap='round' stroke-linejoin='round' stroke-width='2' d='M2 5l6 6 6-6'/%3e%3c/svg%3e") !important;
    color: var(--input-text) !important;
    border-color: var(--primary) !important;
    outline: 2px solid var(--primary) !important;
    outline-offset: 2px !important;
}

/* Footer - ajustement pour thème sombre */
[data-theme="dark"] footer {
    background: var(--bg-primary);
    border-top-color: var(--border-color);
}

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

[data-theme="dark"] .footer-section p,
[data-theme="dark"] .footer-section ul li a {
    color: var(--text-secondary);
}

[data-theme="dark"] .footer-section ul li a:hover {
    color: var(--primary);
}

/* Nav dropdown toggle hover */
[data-theme="dark"] .nav-dropdown-toggle:hover {
    background: var(--bg-tertiary);
}

[data-theme="dark"] .nav-dropdown-toggle.active {
    background: var(--bg-tertiary);
}

/* ============================================
   PAGE ACTUALITÉS - DESIGN MODERNE
   ============================================ */

.news-page {
    padding: var(--spacing-2xl) 0;
}

/* Header Section */
.news-header {
    text-align: center;
    padding: var(--spacing-2xl) 0;
    margin-bottom: var(--spacing-2xl);
    background: linear-gradient(135deg, var(--bg-primary) 0%, var(--bg-tertiary) 100%);
    border-radius: var(--radius-2xl);
}

.news-page-title {
    font-size: 3rem;
    font-weight: 800;
    margin-bottom: var(--spacing-md);
    color: var(--text-primary);
    background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.news-page-subtitle {
    font-size: 1.25rem;
    color: var(--text-secondary);
    max-width: 600px;
    margin: 0 auto;
}

/* Featured Article */
.news-featured {
    margin-bottom: var(--spacing-2xl);
    border-radius: var(--radius-2xl);
    overflow: hidden;
    box-shadow: var(--shadow-xl);
    background: var(--bg-primary);
    border: 1px solid var(--border-color);
    transition: all var(--transition-base);
}

.news-featured:hover {
    transform: translateY(-4px);
    box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.25);
}

.news-featured-link {
    display: block;
    text-decoration: none;
    color: inherit;
}

.news-featured-image {
    position: relative;
    width: 100%;
    height: 400px;
    overflow: hidden;
    background: var(--bg-tertiary);
}

.news-featured-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform var(--transition-slow);
}

.news-featured:hover .news-featured-image img {
    transform: scale(1.1);
}

.news-featured-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(to bottom, transparent 0%, rgba(0, 0, 0, 0.3) 100%);
    pointer-events: none;
}

.news-featured-placeholder {
    width: 100%;
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
    color: white;
}

.news-featured-placeholder i {
    font-size: 5rem;
    opacity: 0.5;
}

.news-featured-content {
    padding: var(--spacing-2xl);
    position: relative;
}

.news-featured-meta {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-lg);
    flex-wrap: wrap;
}

.news-badge {
    display: inline-flex;
    align-items: center;
    padding: var(--spacing-xs) var(--spacing-md);
    background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
    color: white;
    border-radius: var(--radius-full);
    font-size: 0.875rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.news-date {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-xs);
    color: var(--text-secondary);
    font-size: 0.9rem;
}

.news-date i {
    font-size: 0.875rem;
    color: var(--primary);
}

.news-featured-title {
    font-size: 2.5rem;
    font-weight: 700;
    margin-bottom: var(--spacing-md);
    color: var(--text-primary);
    line-height: 1.2;
}

.news-featured-excerpt {
    font-size: 1.125rem;
    color: var(--text-secondary);
    line-height: 1.7;
    margin-bottom: var(--spacing-lg);
}

.news-featured-cta {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-sm);
    color: var(--primary);
    font-weight: 600;
    font-size: 1rem;
    transition: all var(--transition-fast);
}

.news-featured:hover .news-featured-cta {
    gap: var(--spacing-md);
    color: var(--primary-dark);
}

.news-featured-cta i {
    transition: transform var(--transition-fast);
}

.news-featured:hover .news-featured-cta i {
    transform: translateX(4px);
}

/* News Grid */
.news-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(350px, 1fr));
    gap: var(--spacing-xl);
    margin-bottom: var(--spacing-2xl);
}

/* News Card */
.news-card {
    background: var(--bg-primary);
    border-radius: var(--radius-xl);
    overflow: hidden;
    box-shadow: var(--shadow-md);
    border: 1px solid var(--border-color);
    transition: all var(--transition-base);
    height: 100%;
    display: flex;
    flex-direction: column;
}

.news-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-xl);
    border-color: var(--primary);
}

.news-card-link {
    display: flex;
    flex-direction: column;
    height: 100%;
    text-decoration: none;
    color: inherit;
}

.news-card-image {
    position: relative;
    width: 100%;
    height: 220px;
    overflow: hidden;
    background: var(--bg-tertiary);
}

.news-card-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform var(--transition-slow);
}

.news-card:hover .news-card-image img {
    transform: scale(1.1);
}

.news-card-placeholder {
    width: 100%;
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
    color: white;
}

.news-card-placeholder i {
    font-size: 3rem;
    opacity: 0.5;
}

.news-card-body {
    padding: var(--spacing-lg);
    flex: 1;
    display: flex;
    flex-direction: column;
}

.news-card-meta {
    margin-bottom: var(--spacing-sm);
}

.news-card-date {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-xs);
    color: var(--text-tertiary);
    font-size: 0.875rem;
}

.news-card-date i {
    font-size: 0.75rem;
    color: var(--primary);
}

.news-card-title {
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: var(--spacing-md);
    color: var(--text-primary);
    line-height: 1.3;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.news-card-excerpt {
    color: var(--text-secondary);
    line-height: 1.6;
    margin-bottom: var(--spacing-lg);
    flex: 1;
    display: -webkit-box;
    -webkit-line-clamp: 3;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.news-card-cta {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-sm);
    color: var(--primary);
    font-weight: 600;
    font-size: 0.95rem;
    margin-top: auto;
    transition: all var(--transition-fast);
}

.news-card:hover .news-card-cta {
    gap: var(--spacing-md);
    color: var(--primary-dark);
}

.news-card-cta i {
    transition: transform var(--transition-fast);
}

.news-card:hover .news-card-cta i {
    transform: translateX(4px);
}

/* Empty State */
.news-empty {
    grid-column: 1 / -1;
    text-align: center;
    padding: var(--spacing-2xl);
    background: var(--bg-primary);
    border-radius: var(--radius-xl);
    border: 2px dashed var(--border-color);
}

.news-empty-icon {
    width: 80px;
    height: 80px;
    margin: 0 auto var(--spacing-lg);
    background: var(--bg-tertiary);
    border-radius: var(--radius-full);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-tertiary);
    font-size: 2.5rem;
}

.news-empty h3 {
    color: var(--text-primary);
    margin-bottom: var(--spacing-sm);
}

.news-empty p {
    color: var(--text-secondary);
    margin: 0;
}

/* Pagination */
.news-pagination {
    margin-top: var(--spacing-2xl);
    display: flex;
    justify-content: center;
}

.news-pagination .pagination {
    display: flex;
    gap: var(--spacing-sm);
    list-style: none;
    padding: 0;
    margin: 0;
}

.news-pagination .page-item {
    margin: 0;
}

.news-pagination .page-link {
    display: flex;
    align-items: center;
    justify-content: center;
    min-width: 40px;
    height: 40px;
    padding: var(--spacing-sm) var(--spacing-md);
    background: var(--bg-primary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    color: var(--text-primary);
    text-decoration: none;
    transition: all var(--transition-fast);
    font-weight: 500;
}

.news-pagination .page-link:hover {
    background: var(--primary);
    color: white;
    border-color: var(--primary);
    transform: translateY(-2px);
}

.news-pagination .page-item.active .page-link {
    background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
    color: white;
    border-color: var(--primary);
}

.news-pagination .page-item.disabled .page-link {
    opacity: 0.5;
    cursor: not-allowed;
    pointer-events: none;
}

/* Responsive */
@media (max-width: 1024px) {
    .news-grid {
        grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
        gap: var(--spacing-lg);
    }
    
    .news-featured-image {
        height: 300px;
    }
    
    .news-featured-title {
        font-size: 2rem;
    }
}

@media (max-width: 768px) {
    .news-page-title {
        font-size: 2rem;
    }
    
    .news-page-subtitle {
        font-size: 1rem;
    }
    
    .news-grid {
        grid-template-columns: 1fr;
    }
    
    .news-featured-content {
        padding: var(--spacing-lg);
    }
    
    .news-featured-title {
        font-size: 1.75rem;
    }
    
    .news-featured-excerpt {
        font-size: 1rem;
    }
    
    .news-featured-image {
        height: 250px;
    }
}

/* Thème sombre */
[data-theme="dark"] .news-header {
    background: linear-gradient(135deg, var(--bg-primary) 0%, var(--bg-tertiary) 100%);
}

[data-theme="dark"] .news-featured,
[data-theme="dark"] .news-card {
    background: var(--card-bg);
    border-color: var(--card-border);
}

[data-theme="dark"] .news-featured-placeholder,
[data-theme="dark"] .news-card-placeholder {
    background: linear-gradient(135deg, var(--primary) 0%, var(--primary-dark) 100%);
    opacity: 0.9;
}

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

[data-theme="dark"] .news-pagination .page-link {
    background: var(--card-bg);
    border-color: var(--card-border);
    color: var(--text-primary);
}

[data-theme="dark"] .news-pagination .page-link:hover {
    background: var(--primary);
    color: white;
}

/* ============================================
   PAGE ARTICLE D'ACTUALITÉ
   ============================================ */

.news-article-page {
    padding: var(--spacing-xl) 0;
    min-height: 100vh;
    position: relative;
    z-index: 1;
}

.news-article-breadcrumb {
    margin-bottom: var(--spacing-xl);
}

.news-article-breadcrumb .breadcrumb {
    background: transparent;
    padding: 0;
    margin: 0;
}

.news-article-breadcrumb .breadcrumb-item {
    color: var(--text-secondary);
}

.news-article-breadcrumb .breadcrumb-item a {
    color: var(--text-secondary);
    text-decoration: none;
    transition: color var(--transition-fast);
}

.news-article-breadcrumb .breadcrumb-item a:hover {
    color: var(--primary);
}

.news-article-breadcrumb .breadcrumb-item.active {
    color: var(--text-primary);
}

.news-article-breadcrumb .breadcrumb-item + .breadcrumb-item::before {
    content: "›";
    color: var(--text-tertiary);
    padding: 0 var(--spacing-sm);
}

/* Hero Section */
.news-article-hero {
    margin-bottom: var(--spacing-2xl);
    position: relative;
}

.news-article-hero-image {
    position: relative;
    width: 100%;
    height: 500px;
    overflow: hidden;
    background: var(--bg-tertiary);
}

.news-article-hero-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.news-article-hero-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(to bottom, transparent 0%, rgba(0, 0, 0, 0.4) 100%);
}

/* Article Wrapper */
.news-article-wrapper {
    display: grid;
    grid-template-columns: 1fr 350px;
    gap: var(--spacing-2xl);
    max-width: 1400px;
    margin: 0 auto;
    position: relative;
    z-index: 1;
}

/* Main Article */
.news-article-main {
    background: var(--bg-primary);
    border-radius: var(--radius-2xl);
    padding: var(--spacing-2xl);
    box-shadow: var(--shadow-lg);
    border: 1px solid var(--border-color);
    position: relative;
    z-index: 1;
}

.news-article-header {
    margin-bottom: var(--spacing-2xl);
    padding-bottom: var(--spacing-xl);
    border-bottom: 2px solid var(--border-color);
    position: relative;
    z-index: 1;
}

.news-article-meta {
    display: flex;
    align-items: center;
    gap: var(--spacing-lg);
    margin-bottom: var(--spacing-md);
    flex-wrap: wrap;
}

.news-article-date,
.news-article-reading-time {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-xs);
    color: var(--text-secondary);
    font-size: 0.9rem;
}

.news-article-date i,
.news-article-reading-time i {
    color: var(--primary);
    font-size: 0.875rem;
}

.news-article-title {
    font-size: 2.75rem;
    font-weight: 800;
    line-height: 1.2;
    color: var(--text-primary);
    margin-bottom: var(--spacing-md);
    background: linear-gradient(135deg, var(--text-primary) 0%, var(--primary) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.news-article-excerpt {
    font-size: 1.25rem;
    line-height: 1.7;
    color: var(--text-secondary);
    font-weight: 400;
}

/* Social Share */
.news-article-share {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    padding: var(--spacing-lg);
    background: var(--bg-tertiary);
    border-radius: var(--radius-lg);
    margin-bottom: var(--spacing-2xl);
    flex-wrap: wrap;
}

.news-article-share-label {
    font-weight: 600;
    color: var(--text-primary);
    font-size: 0.95rem;
}

.news-article-share-buttons {
    display: flex;
    gap: var(--spacing-sm);
}

.news-share-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    border-radius: var(--radius-md);
    border: 2px solid var(--border-color);
    background: var(--bg-primary);
    color: var(--text-primary);
    text-decoration: none;
    transition: all var(--transition-fast);
    cursor: pointer;
}

.news-share-btn:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.news-share-facebook:hover {
    background: #1877f2;
    border-color: #1877f2;
    color: white;
}

.news-share-twitter:hover {
    background: #1da1f2;
    border-color: #1da1f2;
    color: white;
}

.news-share-linkedin:hover {
    background: #0077b5;
    border-color: #0077b5;
    color: white;
}

.news-share-copy:hover {
    background: var(--primary);
    border-color: var(--primary);
    color: white;
}

/* Article Content */
.news-article-content {
    font-size: 1.125rem;
    line-height: 1.8;
    color: var(--text-primary);
    margin-bottom: var(--spacing-2xl);
    position: relative;
    z-index: 1;
}

.news-article-content h2 {
    font-size: 2rem;
    font-weight: 700;
    margin-top: var(--spacing-2xl);
    margin-bottom: var(--spacing-lg);
    color: var(--text-primary);
    padding-bottom: var(--spacing-sm);
    border-bottom: 2px solid var(--border-color);
}

.news-article-content h3 {
    font-size: 1.5rem;
    font-weight: 600;
    margin-top: var(--spacing-xl);
    margin-bottom: var(--spacing-md);
    color: var(--text-primary);
}

.news-article-content p {
    margin-bottom: var(--spacing-lg);
}

.news-article-content ul,
.news-article-content ol {
    margin-bottom: var(--spacing-lg);
    padding-left: var(--spacing-xl);
}

.news-article-content li {
    margin-bottom: var(--spacing-sm);
}

.news-article-content a {
    color: var(--primary);
    text-decoration: underline;
    transition: color var(--transition-fast);
}

.news-article-content a:hover {
    color: var(--primary-dark);
}

.news-article-content img {
    max-width: 100%;
    height: auto;
    border-radius: var(--radius-lg);
    margin: var(--spacing-xl) 0;
    box-shadow: var(--shadow-md);
}

.news-article-content blockquote {
    border-left: 4px solid var(--primary);
    padding-left: var(--spacing-lg);
    margin: var(--spacing-xl) 0;
    font-style: italic;
    color: var(--text-secondary);
    background: var(--bg-tertiary);
    padding: var(--spacing-lg);
    border-radius: var(--radius-md);
}

.news-article-content code {
    background: var(--bg-tertiary);
    padding: 0.2em 0.4em;
    border-radius: var(--radius-sm);
    font-size: 0.9em;
    color: var(--primary);
}

.news-article-content pre {
    background: var(--bg-tertiary);
    padding: var(--spacing-lg);
    border-radius: var(--radius-md);
    overflow-x: auto;
    margin: var(--spacing-lg) 0;
}

.news-article-content pre code {
    background: transparent;
    padding: 0;
}

/* Article Footer */
.news-article-footer {
    padding-top: var(--spacing-xl);
    border-top: 2px solid var(--border-color);
}

.news-article-actions {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-lg);
}

.news-article-languages {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    flex-wrap: wrap;
}

.news-article-languages-label {
    font-weight: 600;
    color: var(--text-secondary);
    font-size: 0.9rem;
}

.news-article-languages-list {
    display: flex;
    gap: var(--spacing-sm);
    flex-wrap: wrap;
}

.news-language-link {
    padding: var(--spacing-xs) var(--spacing-md);
    background: var(--bg-tertiary);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    color: var(--text-secondary);
    text-decoration: none;
    font-size: 0.875rem;
    transition: all var(--transition-fast);
}

.news-language-link:hover {
    background: var(--primary);
    border-color: var(--primary);
    color: white;
    transform: translateY(-2px);
}

.news-language-link.active {
    background: var(--primary);
    border-color: var(--primary);
    color: white;
}

/* Sidebar */
.news-article-sidebar {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-xl);
}

/* Table of Contents */
.news-article-toc {
    background: var(--bg-primary);
    border-radius: var(--radius-xl);
    padding: var(--spacing-lg);
    box-shadow: var(--shadow-md);
    border: 1px solid var(--border-color);
    position: sticky;
    top: calc(70px + var(--spacing-md));
    z-index: 100;
    max-height: calc(100vh - 90px);
    overflow-y: auto;
}

.news-article-toc-title {
    font-size: 1.25rem;
    font-weight: 700;
    margin-bottom: var(--spacing-md);
    color: var(--text-primary);
}

.news-article-toc-nav {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
}

.news-article-toc-link {
    color: var(--text-secondary);
    text-decoration: none;
    font-size: 0.9rem;
    transition: all var(--transition-fast);
    display: block;
    padding: var(--spacing-xs) 0;
}

.news-article-toc-link:hover {
    color: var(--primary);
    padding-left: var(--spacing-xs);
}

/* Related Articles */
.news-article-related {
    background: var(--bg-primary);
    border-radius: var(--radius-xl);
    padding: var(--spacing-lg);
    box-shadow: var(--shadow-md);
    border: 1px solid var(--border-color);
}

.news-article-related-title {
    font-size: 1.25rem;
    font-weight: 700;
    margin-bottom: var(--spacing-lg);
    color: var(--text-primary);
}

.news-article-related-list {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-lg);
}

.news-article-related-item {
    border-bottom: 1px solid var(--border-color);
    padding-bottom: var(--spacing-lg);
}

.news-article-related-item:last-child {
    border-bottom: none;
    padding-bottom: 0;
}

.news-article-related-link {
    display: flex;
    gap: var(--spacing-md);
    text-decoration: none;
    color: inherit;
    transition: all var(--transition-fast);
}

.news-article-related-link:hover {
    transform: translateX(4px);
}

.news-article-related-image {
    width: 100px;
    height: 80px;
    border-radius: var(--radius-md);
    overflow: hidden;
    flex-shrink: 0;
    background: var(--bg-tertiary);
}

.news-article-related-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.news-article-related-content {
    flex: 1;
}

.news-article-related-title-item {
    font-size: 1rem;
    font-weight: 600;
    margin-bottom: var(--spacing-xs);
    color: var(--text-primary);
    line-height: 1.4;
    display: -webkit-box;
    -webkit-line-clamp: 2;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.news-article-related-date {
    font-size: 0.875rem;
    color: var(--text-tertiary);
}

/* Ad Space */
.news-article-ad {
    background: var(--bg-tertiary);
    border-radius: var(--radius-lg);
    min-height: 250px;
    display: flex;
    align-items: center;
    justify-content: center;
}

/* Responsive */
@media (max-width: 1024px) {
    .news-article-wrapper {
        grid-template-columns: 1fr;
    }
    
    .news-article-sidebar {
        order: -1;
    }
    
    .news-article-toc {
        position: static;
    }
}

@media (max-width: 768px) {
    .news-article-hero-image {
        height: 300px;
    }
    
    .news-article-main {
        padding: var(--spacing-lg);
    }
    
    .news-article-title {
        font-size: 2rem;
    }
    
    .news-article-excerpt {
        font-size: 1.125rem;
    }
    
    .news-article-content {
        font-size: 1rem;
    }
    
    .news-article-content h2 {
        font-size: 1.75rem;
    }
    
    .news-article-content h3 {
        font-size: 1.25rem;
    }
    
    .news-article-share {
        flex-direction: column;
        align-items: flex-start;
    }
}

/* Dark Theme */
[data-theme="dark"] .news-article-main,
[data-theme="dark"] .news-article-toc,
[data-theme="dark"] .news-article-related {
    background: var(--card-bg);
    border-color: var(--card-border);
}

[data-theme="dark"] .news-article-share {
    background: var(--bg-tertiary);
}

[data-theme="dark"] .news-article-hero-overlay {
    background: linear-gradient(to bottom, transparent 0%, rgba(0, 0, 0, 0.6) 100%);
}

/* Contenu de l'article - Thème sombre */
[data-theme="dark"] .news-article-content {
    background: transparent !important;
    color: var(--text-primary) !important;
}

[data-theme="dark"] .news-article-content * {
    background: transparent !important;
    color: var(--text-primary) !important;
}

[data-theme="dark"] .news-article-content p {
    color: var(--text-primary) !important;
}

[data-theme="dark"] .news-article-content h2,
[data-theme="dark"] .news-article-content h3,
[data-theme="dark"] .news-article-content h4 {
    color: var(--text-primary) !important;
}

[data-theme="dark"] .news-article-content a {
    color: var(--primary) !important;
}

[data-theme="dark"] .news-article-content blockquote {
    background: var(--bg-tertiary) !important;
    border-left-color: var(--primary) !important;
    color: var(--text-secondary) !important;
}

[data-theme="dark"] .news-article-content code {
    background: var(--bg-tertiary) !important;
    color: var(--primary) !important;
}

[data-theme="dark"] .news-article-content pre {
    background: var(--bg-tertiary) !important;
}

[data-theme="dark"] .news-article-content pre code {
    background: transparent !important;
    color: var(--text-primary) !important;
}

/* Tableaux dans le contenu - Thème sombre */
[data-theme="dark"] .news-article-content table,
[data-theme="dark"] .news-article-content .table {
    background: var(--bg-tertiary) !important;
    border-color: var(--border-color) !important;
    color: var(--text-primary) !important;
}

[data-theme="dark"] .news-article-content table thead,
[data-theme="dark"] .news-article-content .table thead {
    background: var(--bg-secondary) !important;
}

[data-theme="dark"] .news-article-content table thead th,
[data-theme="dark"] .news-article-content .table thead th {
    background: var(--bg-secondary) !important;
    color: var(--text-primary) !important;
    border-color: var(--border-color) !important;
}

[data-theme="dark"] .news-article-content table tbody,
[data-theme="dark"] .news-article-content .table tbody {
    background: var(--bg-tertiary) !important;
}

[data-theme="dark"] .news-article-content table tbody td,
[data-theme="dark"] .news-article-content .table tbody td {
    background: var(--bg-tertiary) !important;
    color: var(--text-primary) !important;
    border-color: var(--border-color) !important;
}

[data-theme="dark"] .news-article-content table tbody tr,
[data-theme="dark"] .news-article-content .table tbody tr {
    background: var(--bg-tertiary) !important;
}

[data-theme="dark"] .news-article-content table tbody tr:nth-child(even),
[data-theme="dark"] .news-article-content .table tbody tr:nth-child(even) {
    background: var(--bg-secondary) !important;
}

[data-theme="dark"] .news-article-content table tbody tr:hover,
[data-theme="dark"] .news-article-content .table tbody tr:hover {
    background: var(--bg-primary) !important;
}

/* Tableaux généraux - Thème sombre */
[data-theme="dark"] .table {
    background: var(--bg-tertiary) !important;
    color: var(--text-primary) !important;
    border-color: var(--border-color) !important;
}

[data-theme="dark"] .table thead {
    background: var(--bg-secondary) !important;
}

[data-theme="dark"] .table thead th {
    background: var(--bg-secondary) !important;
    color: var(--text-primary) !important;
    border-color: var(--border-color) !important;
}

[data-theme="dark"] .table tbody {
    background: var(--bg-tertiary) !important;
}

[data-theme="dark"] .table tbody td {
    background: var(--bg-tertiary) !important;
    color: var(--text-primary) !important;
    border-color: var(--border-color) !important;
}

[data-theme="dark"] .table tbody tr {
    background: var(--bg-tertiary) !important;
}

[data-theme="dark"] .table tbody tr:nth-child(even) {
    background: var(--bg-secondary) !important;
}

[data-theme="dark"] .table tbody tr:hover {
    background: var(--bg-primary) !important;
}

/* ============================================
   FORMULAIRE DE CONTACT
   ============================================ */

.contact-form {
    max-width: 600px;
    margin: 0 auto;
}

.contact-form .form-label {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: var(--spacing-sm);
}

.contact-form .form-label i {
    color: var(--primary);
    font-size: 1rem;
}

.contact-form .form-control {
    padding: 0.75rem 1rem;
    font-size: 1rem;
    border: 2px solid var(--gray-300);
    border-radius: var(--radius-md);
    transition: all var(--transition-fast);
}

.contact-form .form-control:focus {
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.1);
}

.contact-form textarea {
    resize: vertical;
    min-height: 150px;
}

.contact-form #message-counter {
    font-weight: 600;
    color: var(--text-secondary);
}

/* ============================================
   SLIDERS INTERACTIFS
   ============================================ */

.slider-container {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-sm);
}

.slider-input {
    width: 100%;
    height: 8px;
    border-radius: var(--radius-full);
    background: var(--border-color);
    outline: none;
    -webkit-appearance: none;
    appearance: none;
    cursor: pointer;
    transition: background var(--transition-fast);
}

.slider-input:hover {
    background: var(--gray-600);
}

.slider-input::-webkit-slider-thumb {
    -webkit-appearance: none;
    appearance: none;
    width: 20px;
    height: 20px;
    border-radius: 50%;
    background: var(--primary);
    cursor: pointer;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.2);
    transition: all var(--transition-fast);
}

.slider-input::-webkit-slider-thumb:hover {
    background: var(--primary-dark);
    transform: scale(1.1);
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.3);
}

.slider-input::-moz-range-thumb {
    width: 20px;
    height: 20px;
    border-radius: 50%;
    background: var(--primary);
    cursor: pointer;
    border: none;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.2);
    transition: all var(--transition-fast);
}

.slider-input::-moz-range-thumb:hover {
    background: var(--primary-dark);
    transform: scale(1.1);
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.3);
}

.slider-input:focus-visible {
    outline: 2px solid var(--primary);
    outline-offset: 4px;
}

.slider-value {
    float: right;
    font-weight: 600;
    color: var(--primary);
    font-size: 0.9rem;
}

.form-label {
    display: flex;
    justify-content: space-between;
    align-items: center;
}

/* Aperçu en temps réel */
.real-time-preview {
    margin-top: 0;
    margin-bottom: var(--spacing-lg);
    padding: var(--spacing-xl);
    background: linear-gradient(135deg, var(--primary) 0%, var(--primary-light) 100%);
    border-radius: var(--radius-lg);
    color: white;
    box-shadow: var(--shadow-lg);
    animation: fadeIn 0.3s ease-out;
    width: 100%;
}

.real-time-preview h4 {
    color: white;
    margin-bottom: var(--spacing-md);
    font-size: 1.1rem;
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

.real-time-preview h4 i {
    font-size: 1.2rem;
}

.preview-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
    gap: var(--spacing-md);
    margin-top: var(--spacing-md);
}

.preview-item {
    background: rgba(255, 255, 255, 0.15);
    backdrop-filter: blur(10px);
    padding: var(--spacing-md);
    border-radius: var(--radius-md);
    text-align: center;
}

.preview-item-label {
    font-size: 0.875rem;
    opacity: 0.9;
    margin-bottom: var(--spacing-xs);
}

.preview-item-value {
    font-size: 1.5rem;
    font-weight: 700;
    color: white;
}

/* Animation pour l'aperçu */
@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(-10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* Responsive pour les sliders */
@media (max-width: 768px) {
    .slider-container {
        gap: var(--spacing-xs);
    }
    
    .slider-value {
        font-size: 0.8rem;
    }
    
    .preview-grid {
        grid-template-columns: 1fr;
    }
}

/* Honeypot field - complètement caché */
.honeypot-field {
    position: absolute;
    left: -9999px;
    width: 1px;
    height: 1px;
    overflow: hidden;
}

/* Styles pour la page de contact */
.container.py-5 {
    max-width: 800px;
    margin: 0 auto;
}

.container.py-5 h1 {
    margin-bottom: var(--spacing-xl);
    text-align: center;
    color: var(--text-primary);
}

/* Amélioration des alertes sur la page contact */
.contact-form + .alert,
.container.py-5 > .alert {
    margin-bottom: var(--spacing-lg);
    border-radius: var(--radius-md);
    padding: var(--spacing-md) var(--spacing-lg);
}

.contact-form + .alert.alert-success,
.container.py-5 > .alert.alert-success {
    background-color: #f0fdf4;
    border-left-color: var(--success);
    color: #166534;
}

.contact-form + .alert.alert-danger,
.container.py-5 > .alert.alert-danger {
    background-color: #fef2f2;
    border-left-color: var(--error);
    color: #991b1b;
}