/* Formation GEO v2 - Design clair et lisible */

:root {
    --geo-primary: #0f766e;
    --geo-primary-dark: #115e59;
    --geo-primary-light: #14b8a6;
    --geo-secondary: #0ea5e9;
    --geo-accent: #f59e0b;
    --geo-success: #10b981;
    --geo-bg: #ffffff;
    --geo-bg-alt: #f8fafc;
    --geo-bg-card: #ffffff;
    --geo-text: #1e293b;
    --geo-text-light: #64748b;
    --geo-text-muted: #94a3b8;
    --geo-border: #e2e8f0;
    --geo-border-light: #f1f5f9;
    --geo-shadow: 0 1px 3px rgba(0, 0, 0, 0.1);
    --geo-shadow-lg: 0 10px 40px rgba(0, 0, 0, 0.1);
    --geo-radius: 12px;
    --geo-radius-lg: 16px;
}

/* Base Layout */
.geo-page {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    background: var(--geo-bg-alt);
    color: var(--geo-text);
    line-height: 1.7;
    min-height: 100vh;
}

.geo-container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 1rem;
}

/* Header */
.geo-header {
    background: var(--geo-bg);
    border-bottom: 1px solid var(--geo-border);
    padding: 1rem 0;
    position: sticky;
    top: 0;
    z-index: 100;
}

.geo-header-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 1rem;
}

.geo-logo {
    font-weight: 700;
    font-size: 1.25rem;
    color: var(--geo-primary);
    text-decoration: none;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.geo-logo:hover {
    color: var(--geo-primary-dark);
}

.geo-badge-free {
    background: linear-gradient(135deg, var(--geo-success), #059669);
    color: white;
    font-size: 0.7rem;
    font-weight: 600;
    padding: 0.25rem 0.5rem;
    border-radius: 20px;
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

/* Main Layout with Sidebar */
.geo-layout {
    display: grid;
    grid-template-columns: 280px 1fr;
    gap: 2rem;
    padding: 2rem 0;
    align-items: start;
}

@media (max-width: 1024px) {
    .geo-layout {
        grid-template-columns: 1fr;
    }
}

/* Sidebar */
.geo-sidebar {
    position: sticky;
    top: 80px;
    background: var(--geo-bg);
    border-radius: var(--geo-radius-lg);
    border: 1px solid var(--geo-border);
    overflow: hidden;
    box-shadow: var(--geo-shadow);
}

@media (max-width: 1024px) {
    .geo-sidebar {
        position: relative;
        top: 0;
    }
}

.geo-sidebar-header {
    background: linear-gradient(135deg, var(--geo-primary), var(--geo-primary-dark));
    color: white;
    padding: 1.25rem;
}

.geo-sidebar-title {
    font-size: 0.875rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    opacity: 0.9;
}

.geo-sidebar-nav {
    padding: 0.5rem;
}

.geo-nav-item {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding: 0.875rem 1rem;
    border-radius: var(--geo-radius);
    color: var(--geo-text);
    text-decoration: none;
    transition: all 0.2s ease;
    margin-bottom: 0.25rem;
}

.geo-nav-item:hover {
    background: var(--geo-bg-alt);
    color: var(--geo-primary);
}

.geo-nav-item.active {
    background: linear-gradient(135deg, rgba(99, 102, 241, 0.1), rgba(99, 102, 241, 0.05));
    color: var(--geo-primary);
    font-weight: 600;
    border-left: 3px solid var(--geo-primary);
    margin-left: -3px;
}

.geo-nav-icon {
    font-size: 1.25rem;
    width: 2rem;
    text-align: center;
}

.geo-nav-text {
    flex: 1;
}

.geo-nav-number {
    font-size: 0.75rem;
    color: var(--geo-text-muted);
    font-weight: 500;
}

.geo-nav-label {
    display: block;
    font-size: 0.9rem;
}

/* Mobile Menu Toggle */
.geo-mobile-toggle {
    display: none;
    width: 100%;
    padding: 1rem;
    background: var(--geo-bg);
    border: 1px solid var(--geo-border);
    border-radius: var(--geo-radius);
    cursor: pointer;
    font-size: 1rem;
    font-weight: 500;
    color: var(--geo-text);
    margin-bottom: 1rem;
}

@media (max-width: 1024px) {
    .geo-mobile-toggle {
        display: flex;
        align-items: center;
        justify-content: space-between;
    }
    
    .geo-sidebar {
        display: none;
    }
    
    .geo-sidebar.open {
        display: block;
    }
}

/* Main Content */
.geo-main {
    min-width: 0;
}

.geo-content {
    background: var(--geo-bg);
    border-radius: var(--geo-radius-lg);
    border: 1px solid var(--geo-border);
    box-shadow: var(--geo-shadow);
    padding: 2.5rem;
}

@media (max-width: 768px) {
    .geo-content {
        padding: 1.5rem;
    }
}

/* Typography */
.geo-h1 {
    font-size: 2.5rem;
    font-weight: 800;
    color: var(--geo-text);
    margin-bottom: 1rem;
    line-height: 1.2;
}

.geo-h2 {
    font-size: 1.75rem;
    font-weight: 700;
    color: var(--geo-text);
    margin: 2.5rem 0 1rem;
    padding-bottom: 0.5rem;
    border-bottom: 2px solid var(--geo-border);
}

.geo-h3 {
    font-size: 1.35rem;
    font-weight: 600;
    color: var(--geo-text);
    margin: 2rem 0 0.75rem;
}

.geo-h4 {
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--geo-text);
    margin: 1.5rem 0 0.5rem;
}

.geo-lead {
    font-size: 1.2rem;
    color: var(--geo-text-light);
    margin-bottom: 2rem;
    line-height: 1.8;
}

.geo-text {
    color: var(--geo-text);
    margin-bottom: 1rem;
}

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

/* Cards */
.geo-card {
    background: var(--geo-bg);
    border: 1px solid var(--geo-border);
    border-radius: var(--geo-radius);
    padding: 1.5rem;
    margin-bottom: 1rem;
    transition: all 0.2s ease;
}

.geo-card:hover {
    border-color: var(--geo-primary-light);
    box-shadow: var(--geo-shadow-lg);
}

.geo-card-highlight {
    border-left: 4px solid var(--geo-primary);
    background: linear-gradient(135deg, rgba(99, 102, 241, 0.05), transparent);
}

.geo-card-warning {
    border-left: 4px solid var(--geo-accent);
    background: linear-gradient(135deg, rgba(245, 158, 11, 0.05), transparent);
}

.geo-card-success {
    border-left: 4px solid var(--geo-success);
    background: linear-gradient(135deg, rgba(16, 185, 129, 0.05), transparent);
}

.geo-card-info {
    border-left: 4px solid var(--geo-secondary);
    background: linear-gradient(135deg, rgba(14, 165, 233, 0.05), transparent);
}

/* Grid */
.geo-grid {
    display: grid;
    gap: 1.5rem;
}

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

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

.geo-grid-4 {
    grid-template-columns: repeat(4, 1fr);
}

@media (max-width: 992px) {
    .geo-grid-3, .geo-grid-4 {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 640px) {
    .geo-grid-2, .geo-grid-3, .geo-grid-4 {
        grid-template-columns: 1fr;
    }
}

/* Module Cards (Hub) */
.geo-module-card {
    background: var(--geo-bg);
    border: 1px solid var(--geo-border);
    border-radius: var(--geo-radius-lg);
    padding: 1.75rem;
    text-decoration: none;
    color: var(--geo-text);
    transition: all 0.3s ease;
    display: block;
}

.geo-module-card:hover {
    border-color: var(--geo-primary);
    box-shadow: var(--geo-shadow-lg);
    transform: translateY(-4px);
}

.geo-module-icon {
    font-size: 2.5rem;
    margin-bottom: 1rem;
}

.geo-module-number {
    font-size: 0.75rem;
    font-weight: 600;
    color: var(--geo-primary);
    text-transform: uppercase;
    letter-spacing: 1px;
    margin-bottom: 0.5rem;
}

.geo-module-title {
    font-size: 1.15rem;
    font-weight: 700;
    margin-bottom: 0.5rem;
    color: var(--geo-text);
}

.geo-module-desc {
    font-size: 0.9rem;
    color: var(--geo-text-light);
    line-height: 1.6;
}

/* Tables */
.geo-table-wrapper {
    overflow-x: auto;
    margin: 1.5rem 0;
    border-radius: var(--geo-radius);
    border: 1px solid var(--geo-border);
}

.geo-table {
    width: 100%;
    border-collapse: collapse;
    font-size: 0.95rem;
}

.geo-table th {
    background: var(--geo-bg-alt);
    font-weight: 600;
    text-align: left;
    padding: 1rem;
    border-bottom: 2px solid var(--geo-border);
    color: var(--geo-text);
}

.geo-table td {
    padding: 1rem;
    border-bottom: 1px solid var(--geo-border-light);
    color: var(--geo-text);
}

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

.geo-table tr:hover td {
    background: var(--geo-bg-alt);
}

/* Lists */
.geo-list {
    margin: 1rem 0;
    padding-left: 1.5rem;
}

.geo-list li {
    margin-bottom: 0.75rem;
    color: var(--geo-text);
}

.geo-list-check {
    list-style: none;
    padding-left: 0;
}

.geo-list-check li {
    position: relative;
    padding-left: 1.75rem;
}

.geo-list-check li::before {
    content: '✓';
    position: absolute;
    left: 0;
    color: var(--geo-success);
    font-weight: bold;
}

/* Buttons */
.geo-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    padding: 0.875rem 1.5rem;
    font-size: 1rem;
    font-weight: 600;
    border-radius: 10px;
    text-decoration: none;
    cursor: pointer;
    transition: all 0.2s ease;
    border: none;
}

.geo-btn-primary {
    background: #000000;
    color: white;
}

.geo-btn-primary:hover {
    background: #333333;
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.2);
}

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

.geo-btn-secondary:hover {
    border-color: var(--geo-primary);
    color: var(--geo-primary);
}

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

.geo-btn-outline:hover {
    background: var(--geo-primary);
    color: white;
}

/* Navigation Footer */
.geo-nav-footer {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 1rem;
    margin-top: 3rem;
    padding-top: 2rem;
    border-top: 1px solid var(--geo-border);
    flex-wrap: wrap;
}

.geo-nav-prev,
.geo-nav-next {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    padding: 1rem 1.5rem;
    background: var(--geo-bg);
    border: 1px solid var(--geo-border);
    border-radius: var(--geo-radius);
    color: var(--geo-text);
    text-decoration: none;
    transition: all 0.2s ease;
    max-width: 45%;
}

.geo-nav-prev:hover,
.geo-nav-next:hover {
    border-color: var(--geo-primary);
    color: var(--geo-primary);
}

.geo-nav-direction {
    font-size: 0.75rem;
    color: var(--geo-text-muted);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.geo-nav-title {
    font-weight: 600;
    font-size: 0.95rem;
}

@media (max-width: 640px) {
    .geo-nav-footer {
        flex-direction: column;
    }
    
    .geo-nav-prev,
    .geo-nav-next {
        max-width: 100%;
        width: 100%;
        justify-content: center;
    }
}

/* CTA Section */
.geo-cta {
    background: linear-gradient(135deg, var(--geo-primary), var(--geo-primary-dark));
    color: white;
    padding: 2.5rem;
    border-radius: var(--geo-radius-lg);
    text-align: center;
    margin-top: 3rem;
}

.geo-cta h3 {
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: 1rem;
    color: white;
}

.geo-cta p {
    opacity: 0.9;
    margin-bottom: 1.5rem;
    max-width: 600px;
    margin-left: auto;
    margin-right: auto;
}

.geo-cta .geo-btn-primary {
    background: white;
    color: var(--geo-primary);
}

.geo-cta .geo-btn-primary:hover {
    background: #f8fafc;
    transform: translateY(-2px);
}

/* FAQ */
.geo-faq-item {
    border: 1px solid var(--geo-border);
    border-radius: var(--geo-radius);
    margin-bottom: 1rem;
    overflow: hidden;
}

.geo-faq-question {
    width: 100%;
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1.25rem;
    background: var(--geo-bg);
    border: none;
    cursor: pointer;
    text-align: left;
    font-size: 1rem;
    font-weight: 600;
    color: var(--geo-text);
    transition: background 0.2s;
}

.geo-faq-question:hover {
    background: var(--geo-bg-alt);
}

.geo-faq-icon {
    font-size: 1.25rem;
    transition: transform 0.3s;
}

.geo-faq-item.open .geo-faq-icon {
    transform: rotate(180deg);
}

.geo-faq-answer {
    display: none;
    padding: 0 1.25rem 1.25rem;
    color: var(--geo-text-light);
    line-height: 1.7;
}

.geo-faq-item.open .geo-faq-answer {
    display: block;
}

/* Quiz */
.geo-quiz-question {
    background: var(--geo-bg-alt);
    border-radius: var(--geo-radius);
    padding: 1.5rem;
    margin-bottom: 1.5rem;
}

.geo-quiz-text {
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--geo-text);
    margin-bottom: 1rem;
}

.geo-quiz-option {
    display: flex;
    align-items: flex-start;
    gap: 0.75rem;
    padding: 1rem;
    background: var(--geo-bg);
    border: 1px solid var(--geo-border);
    border-radius: var(--geo-radius);
    margin-bottom: 0.5rem;
    cursor: pointer;
    transition: all 0.2s;
}

.geo-quiz-option:hover {
    border-color: var(--geo-primary-light);
}

.geo-quiz-option input {
    margin-top: 0.25rem;
}

.geo-quiz-option.correct {
    border-color: var(--geo-success);
    background: rgba(16, 185, 129, 0.1);
}

.geo-quiz-option.incorrect {
    border-color: #ef4444;
    background: rgba(239, 68, 68, 0.1);
}

.geo-quiz-explanation {
    display: none;
    margin-top: 1rem;
    padding: 1rem;
    background: rgba(16, 185, 129, 0.1);
    border-left: 4px solid var(--geo-success);
    border-radius: 0 var(--geo-radius) var(--geo-radius) 0;
    color: var(--geo-text);
}

.geo-quiz-explanation.visible {
    display: block;
}

/* Progress Steps */
.geo-steps {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.geo-step {
    display: flex;
    gap: 1rem;
    padding: 1.5rem;
    background: var(--geo-bg);
    border: 1px solid var(--geo-border);
    border-radius: var(--geo-radius);
    cursor: pointer;
    transition: all 0.2s;
}

.geo-step:hover {
    border-color: var(--geo-primary-light);
    background: var(--geo-bg-alt);
}

.geo-step.active {
    border-color: var(--geo-primary);
    box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.1);
}

.geo-step-number {
    width: 2.5rem;
    height: 2.5rem;
    background: var(--geo-primary);
    color: white;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    flex-shrink: 0;
}

.geo-step-content {
    flex: 1;
}

.geo-step-title {
    font-weight: 600;
    color: var(--geo-text);
    margin-bottom: 0.25rem;
}

.geo-step-desc {
    font-size: 0.9rem;
    color: var(--geo-text-light);
}

/* Expert Cards */
.geo-expert-card {
    border: 1px solid var(--geo-border);
    border-radius: var(--geo-radius-lg);
    padding: 1.5rem;
    transition: all 0.2s;
}

.geo-expert-card:hover {
    box-shadow: var(--geo-shadow-lg);
}

.geo-expert-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    gap: 1rem;
    margin-bottom: 1rem;
}

.geo-expert-name {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--geo-text);
}

.geo-expert-role {
    font-size: 0.875rem;
    color: var(--geo-text-light);
}

.geo-expert-bio {
    color: var(--geo-text);
    margin-bottom: 1rem;
    line-height: 1.7;
}

.geo-expert-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
    margin-bottom: 1rem;
}

.geo-tag {
    font-size: 0.75rem;
    font-weight: 500;
    padding: 0.25rem 0.75rem;
    border-radius: 20px;
    background: var(--geo-bg-alt);
    color: var(--geo-primary);
    border: 1px solid var(--geo-border);
}

.geo-expert-links {
    display: flex;
    gap: 0.5rem;
}

/* Diagrams */
.geo-diagram {
    background: var(--geo-bg-alt);
    border: 1px solid var(--geo-border);
    border-radius: var(--geo-radius-lg);
    overflow: hidden;
    margin: 1.5rem 0;
}

.geo-diagram img {
    display: block;
    width: 100%;
    height: auto;
}

/* Stats Grid */
.geo-stats {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 1rem;
    margin: 1.5rem 0;
}

@media (max-width: 768px) {
    .geo-stats {
        grid-template-columns: repeat(2, 1fr);
    }
}

.geo-stat {
    background: var(--geo-bg-alt);
    border: 1px solid var(--geo-border);
    border-radius: var(--geo-radius);
    padding: 1.25rem;
    text-align: center;
}

.geo-stat-value {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--geo-primary);
}

.geo-stat-label {
    font-size: 0.85rem;
    color: var(--geo-text-muted);
    margin-top: 0.25rem;
}

/* Breadcrumb */
.geo-breadcrumb {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 0.875rem;
    color: var(--geo-text-muted);
    margin-bottom: 1.5rem;
}

.geo-breadcrumb a {
    color: var(--geo-primary);
    text-decoration: none;
}

.geo-breadcrumb a:hover {
    text-decoration: underline;
}

/* Highlight Box */
.geo-highlight {
    background: linear-gradient(135deg, rgba(99, 102, 241, 0.1), rgba(99, 102, 241, 0.05));
    border: 1px solid rgba(99, 102, 241, 0.2);
    border-radius: var(--geo-radius);
    padding: 1.5rem;
    margin: 1.5rem 0;
}

.geo-highlight-title {
    font-weight: 700;
    color: var(--geo-primary);
    margin-bottom: 0.5rem;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

/* Footer */
.geo-footer {
    text-align: center;
    padding: 2rem;
    color: var(--geo-text-muted);
    font-size: 0.9rem;
}

.geo-footer a {
    color: var(--geo-primary);
    text-decoration: none;
}

.geo-footer a:hover {
    text-decoration: underline;
}

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

.geo-animate {
    animation: fadeIn 0.3s ease;
}

/* Print Styles */
@media print {
    .geo-sidebar,
    .geo-header,
    .geo-nav-footer,
    .geo-cta {
        display: none;
    }
    
    .geo-layout {
        grid-template-columns: 1fr;
    }
    
    .geo-content {
        box-shadow: none;
        border: none;
    }
}