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

:root {
    /* Couleurs principales */
    --primary-dark: #0A2463;
    --primary-light: #3E92CC;
    --primary-orange: #FF6B35;
    --primary-green: #4CB944;
    --white: #FFFFFF;
    
    /* Couleurs neutres */
    --gray-dark: #2E2E2E;
    --gray-medium: #D1D1D6;
    --gray-light: #F5F5F7;
    
    /* Typographie */
    --font-heading: 'Montserrat', sans-serif;
    --font-body: 'Open Sans', sans-serif;
    
    /* Espacement */
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 1.5rem;
    --spacing-lg: 2rem;
    --spacing-xl: 3rem;
    --spacing-xxl: 4rem;
    
    /* Rayons */
    --radius-sm: 4px;
    --radius-md: 8px;
    --radius-lg: 16px;
    
    /* Ombres */
    --shadow-sm: 0 2px 4px rgba(0,0,0,0.1);
    --shadow-md: 0 4px 8px rgba(0,0,0,0.1);
    --shadow-lg: 0 8px 16px rgba(0,0,0,0.1);
    
    /* Transitions */
    --transition-fast: 200ms ease;
    --transition-normal: 300ms ease;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: var(--font-body);
    line-height: 1.6;
    color: var(--gray-dark);
    background-color: var(--white);
    overflow-x: hidden;
}

.container {
    width: 100%;
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-md);
}

/* Accessibility */
.skip-link {
    position: absolute;
    top: -40px;
    left: 0;
    background: var(--primary-dark);
    color: white;
    padding: 8px;
    z-index: 100;
    text-decoration: none;
}

.skip-link:focus {
    top: 0;
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 12px 24px;
    border-radius: var(--radius-md);
    font-family: var(--font-heading);
    font-weight: 600;
    text-decoration: none;
    cursor: pointer;
    transition: all var(--transition-fast);
    border: 2px solid transparent;
    font-size: 1rem;
}

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

.btn-primary:hover {
    background-color: #E05A2A;
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.btn-secondary {
    background-color: transparent;
    color: var(--primary-dark);
    border-color: var(--primary-dark);
}

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

/* Header & Navigation */
.header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    background-color: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    z-index: 1000;
    box-shadow: var(--shadow-sm);
}

.nav {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--spacing-sm) 0;
}

.logo {
    display: flex;
    flex-direction: column;
    text-decoration: none;
    color: var(--primary-dark);
}

.logo-text {
    font-family: var(--font-heading);
    font-size: 1.5rem;
    font-weight: 700;
}

.logo-subtitle {
    font-size: 0.75rem;
    color: var(--primary-light);
    margin-top: -2px;
}

.menu-toggle {
    display: none;
    background: none;
    border: none;
    cursor: pointer;
    width: 30px;
    height: 30px;
    position: relative;
    z-index: 1001;
}

.hamburger {
    display: block;
    width: 24px;
    height: 2px;
    background-color: var(--primary-dark);
    position: relative;
    transition: background-color var(--transition-fast);
}

.hamburger::before,
.hamburger::after {
    content: '';
    position: absolute;
    width: 24px;
    height: 2px;
    background-color: var(--primary-dark);
    left: 0;
    transition: transform var(--transition-fast);
}

.hamburger::before {
    top: -8px;
}

.hamburger::after {
    bottom: -8px;
}

.menu-toggle[aria-expanded="true"] .hamburger {
    background-color: transparent;
}

.menu-toggle[aria-expanded="true"] .hamburger::before {
    transform: rotate(45deg);
    top: 0;
}

.menu-toggle[aria-expanded="true"] .hamburger::after {
    transform: rotate(-45deg);
    bottom: 0;
}

.nav-menu {
    display: flex;
    list-style: none;
    gap: var(--spacing-lg);
    align-items: center;
}

.nav-link {
    text-decoration: none;
    color: var(--gray-dark);
    font-weight: 500;
    padding: 8px 0;
    position: relative;
    transition: color var(--transition-fast);
}

.nav-link:hover,
.nav-link.active {
    color: var(--primary-orange);
}

.nav-link.active::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100%;
    height: 2px;
    background-color: var(--primary-orange);
}

.nav-link.donate-btn {
    background-color: var(--primary-orange);
    color: white;
    padding: 8px 16px;
    border-radius: var(--radius-md);
    margin-left: var(--spacing-sm);
}

.nav-link.donate-btn:hover {
    background-color: #E05A2A;
}

.nav-link.contact-btn {
    border: 2px solid var(--primary-dark);
    padding: 8px 16px;
    border-radius: var(--radius-md);
}

/* Hero Section */
.hero {
    position: relative;
    min-height: 90vh;
    display: flex;
    align-items: center;
    background: linear-gradient(rgba(10, 36, 99, 0.8), rgba(10, 36, 99, 0.9)),
                url('https://images.unsplash.com/photo-1488521787991-ed7bbaae773c?ixlib=rb-4.0.3&ixid=M3wxMjA3fDB8MHxwaG90by1wYWdlfHx8fGVufDB8fHx8fA%3D%3D&auto=format&fit=crop&w=2070&q=80') center/cover no-repeat;
    color: var(--white);
    margin-top: 70px;
}

.hero-content {
    position: relative;
    z-index: 2;
    max-width: 800px;
    padding: var(--spacing-xl) 0;
}

.hero-title {
    font-family: var(--font-heading);
    font-size: clamp(2.5rem, 5vw, 3.5rem);
    line-height: 1.2;
    margin-bottom: var(--spacing-md);
    font-weight: 700;
}

.hero-subtitle {
    font-size: clamp(1.1rem, 2vw, 1.3rem);
    margin-bottom: var(--spacing-xl);
    opacity: 0.9;
    max-width: 600px;
}

.hero-cta {
    display: flex;
    gap: var(--spacing-md);
    flex-wrap: wrap;
}

.hero-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(135deg, rgba(10, 36, 99, 0.9) 0%, rgba(62, 146, 204, 0.7) 100%);
}

/* Stats Section */
.stats-section {
    padding: var(--spacing-xxl) 0;
    background-color: var(--gray-light);
}

.section-title {
    font-family: var(--font-heading);
    font-size: clamp(1.8rem, 3vw, 2.5rem);
    text-align: center;
    margin-bottom: var(--spacing-xl);
    color: var(--primary-dark);
}

.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: var(--spacing-lg);
    text-align: center;
}

.stat-card {
    padding: var(--spacing-lg);
    background: var(--white);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-sm);
    transition: transform var(--transition-normal);
}

.stat-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-md);
}

.stat-number {
    font-family: var(--font-heading);
    font-size: 3rem;
    font-weight: 700;
    color: var(--primary-orange);
    margin-bottom: var(--spacing-xs);
}

.stat-label {
    font-size: 1.1rem;
    color: var(--gray-dark);
    font-weight: 500;
}

/* Mission Section */
.mission-section {
    padding: var(--spacing-xxl) 0;
}

.mission-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: var(--spacing-lg);
}

.mission-card {
    padding: var(--spacing-xl);
    background: var(--white);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-sm);
    text-align: center;
    transition: transform var(--transition-normal);
    border-top: 4px solid var(--primary-light);
}

.mission-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-md);
}

.mission-icon {
    width: 64px;
    height: 64px;
    margin: 0 auto var(--spacing-md);
    background-color: rgba(62, 146, 204, 0.1);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
}

.mission-icon svg {
    width: 32px;
    height: 32px;
    color: var(--primary-light);
}

.mission-card h3 {
    font-family: var(--font-heading);
    font-size: 1.5rem;
    margin-bottom: var(--spacing-sm);
    color: var(--primary-dark);
}

/* Projects Section */
.projects-section {
    padding: var(--spacing-xxl) 0;
    background-color: var(--gray-light);
}

.section-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--spacing-xl);
    flex-wrap: wrap;
    gap: var(--spacing-md);
}

.view-all {
    color: var(--primary-orange);
    text-decoration: none;
    font-weight: 600;
    display: flex;
    align-items: center;
    gap: var(--spacing-xs);
}

.view-all:hover {
    text-decoration: underline;
}

.projects-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--spacing-lg);
}

.project-card {
    background: var(--white);
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-sm);
    transition: transform var(--transition-normal);
}

.project-card:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-md);
}

.project-image {
    height: 200px;
    overflow: hidden;
}

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

.project-card:hover .project-image img {
    transform: scale(1.05);
}

.project-content {
    padding: var(--spacing-lg);
}

.project-category {
    display: inline-block;
    padding: 4px 12px;
    background-color: rgba(76, 185, 68, 0.1);
    color: var(--primary-green);
    border-radius: var(--radius-md);
    font-size: 0.875rem;
    font-weight: 600;
    margin-bottom: var(--spacing-sm);
}

.project-card h3 {
    font-family: var(--font-heading);
    font-size: 1.3rem;
    margin-bottom: var(--spacing-sm);
    color: var(--primary-dark);
}

.project-progress {
    margin: var(--spacing-md) 0;
}

.progress-bar {
    height: 8px;
    background-color: var(--gray-medium);
    border-radius: 4px;
    overflow: hidden;
    margin-bottom: var(--spacing-xs);
}

.progress-fill {
    height: 100%;
    background-color: var(--primary-green);
    border-radius: 4px;
    transition: width 1s ease;
}

.progress-stats {
    display: flex;
    justify-content: space-between;
    font-size: 0.875rem;
    color: var(--gray-dark);
}

.project-link {
    display: inline-block;
    color: var(--primary-orange);
    text-decoration: none;
    font-weight: 600;
    margin-top: var(--spacing-sm);
}

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

/* Testimonials Section */
.testimonials-section {
    padding: var(--spacing-xxl) 0;
}

.testimonials-slider {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--spacing-lg);
}

.testimonial-card {
    background: var(--white);
    padding: var(--spacing-xl);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-sm);
    border-left: 4px solid var(--primary-orange);
}

.testimonial-content {
    font-style: italic;
    font-size: 1.1rem;
    line-height: 1.8;
    margin-bottom: var(--spacing-lg);
    color: var(--gray-dark);
}

.testimonial-author {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
}

.author-avatar {
    width: 60px;
    height: 60px;
    border-radius: 50%;
    overflow: hidden;
}

.author-avatar img {
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.author-info h4 {
    font-family: var(--font-heading);
    font-size: 1.1rem;
    margin-bottom: 4px;
    color: var(--primary-dark);
}

.author-info span {
    font-size: 0.875rem;
    color: var(--gray-dark);
    opacity: 0.8;
}

/* CTA Section */
.cta-section {
    padding: var(--spacing-xxl) 0;
    background-color: var(--gray-light);
}

.cta-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--spacing-lg);
}

.newsletter-card,
.final-cta-card {
    background: var(--white);
    padding: var(--spacing-xl);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-sm);
}

.newsletter-card h3,
.final-cta-card h3 {
    font-family: var(--font-heading);
    font-size: 1.5rem;
    margin-bottom: var(--spacing-sm);
    color: var(--primary-dark);
}

.newsletter-form {
    margin-top: var(--spacing-lg);
}

.form-group {
    display: flex;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-sm);
}

.form-group input {
    flex: 1;
    padding: 12px 16px;
    border: 2px solid var(--gray-medium);
    border-radius: var(--radius-md);
    font-family: var(--font-body);
    font-size: 1rem;
}

.form-group input:focus {
    outline: none;
    border-color: var(--primary-light);
}

.form-agreement {
    display: flex;
    align-items: flex-start;
    gap: var(--spacing-xs);
    font-size: 0.875rem;
    color: var(--gray-dark);
}

.form-agreement input[type="checkbox"] {
    margin-top: 4px;
}

.cta-buttons {
    display: flex;
    gap: var(--spacing-md);
    margin-top: var(--spacing-lg);
    flex-wrap: wrap;
}

/* Footer */
.footer {
    background-color: var(--primary-dark);
    color: var(--white);
    padding: var(--spacing-xxl) 0 var(--spacing-lg);
}

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

.footer-logo {
    font-family: var(--font-heading);
    font-size: 1.8rem;
    font-weight: 700;
    color: var(--white);
    text-decoration: none;
    display: block;
    margin-bottom: var(--spacing-sm);
}

.footer-description {
    opacity: 0.8;
    margin-bottom: var(--spacing-md);
    line-height: 1.6;
}

.social-links {
    display: flex;
    gap: var(--spacing-sm);
}

.social-links a {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 40px;
    height: 40px;
    background-color: rgba(255, 255, 255, 0.1);
    border-radius: 50%;
    color: var(--white);
    transition: background-color var(--transition-fast);
}

.social-links a:hover {
    background-color: var(--primary-orange);
}

.social-links svg {
    width: 20px;
    height: 20px;
}

.footer-col h4 {
    font-family: var(--font-heading);
    font-size: 1.2rem;
    margin-bottom: var(--spacing-md);
    color: var(--white);
}

.footer-links {
    list-style: none;
}

.footer-links li {
    margin-bottom: var(--spacing-xs);
}

.footer-links a {
    color: rgba(255, 255, 255, 0.8);
    text-decoration: none;
    transition: color var(--transition-fast);
}

.footer-links a:hover {
    color: var(--white);
}

.footer-contact {
    list-style: none;
}

.footer-contact li {
    display: flex;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-md);
    align-items: flex-start;
}

.footer-contact svg {
    width: 20px;
    height: 20px;
    color: var(--primary-orange);
    flex-shrink: 0;
    margin-top: 2px;
}

.footer-contact span {
    opacity: 0.8;
    line-height: 1.5;
}

.footer-bottom {
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    padding-top: var(--spacing-lg);
    display: flex;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: var(--spacing-md);
}

.footer-legal {
    display: flex;
    gap: var(--spacing-lg);
    flex-wrap: wrap;
}

.footer-legal a {
    color: rgba(255, 255, 255, 0.7);
    text-decoration: none;
    font-size: 0.875rem;
}

.footer-legal a:hover {
    color: var(--white);
}

.footer-copyright {
    font-size: 0.875rem;
    opacity: 0.7;
}

.footer-copyright p {
    margin-bottom: var(--spacing-xs);
}

/* Responsive Design */
@media (max-width: 992px) {
    .hero-cta {
        flex-direction: column;
        align-items: flex-start;
    }
    
    .nav-menu {
        gap: var(--spacing-md);
    }
}

@media (max-width: 768px) {
    .container {
        padding: 0 var(--spacing-sm);
    }
    
    .menu-toggle {
        display: block;
    }
    
    .nav-menu {
        position: fixed;
        top: 70px;
        left: 0;
        width: 100%;
        background-color: var(--white);
        flex-direction: column;
        padding: var(--spacing-lg);
        box-shadow: var(--shadow-md);
        transform: translateY(-100%);
        opacity: 0;
        visibility: hidden;
        transition: all var(--transition-normal);
        z-index: 999;
    }
    
    .nav-menu[data-visible="true"] {
        transform: translateY(0);
        opacity: 1;
        visibility: visible;
    }
    
    .nav-item {
        width: 100%;
    }
    
    .nav-link {
        display: block;
        padding: var(--spacing-sm) 0;
        border-bottom: 1px solid var(--gray-light);
    }
    
    .nav-link.donate-btn,
    .nav-link.contact-btn {
        margin: var(--spacing-sm) 0;
        text-align: center;
    }
    
    .hero {
        min-height: 80vh;
        text-align: center;
    }
    
    .hero-cta {
        justify-content: center;
        align-items: center;
    }
    
    .section-header {
        flex-direction: column;
        align-items: flex-start;
    }
    
    .form-group {
        flex-direction: column;
    }
    
    .footer-bottom {
        flex-direction: column;
        gap: var(--spacing-md);
    }
    
    .footer-legal {
        justify-content: center;
    }
}

@media (max-width: 480px) {
    .hero-title {
        font-size: 2rem;
    }
    
    .hero-subtitle {
        font-size: 1rem;
    }
    
    .stat-number {
        font-size: 2.5rem;
    }
    
    .mission-card,
    .project-card,
    .testimonial-card,
    .newsletter-card,
    .final-cta-card {
        padding: var(--spacing-lg);
    }
    
    .cta-buttons {
        flex-direction: column;
    }
    
    .btn {
        width: 100%;
        justify-content: center;
    }
}

/* Print Styles */
@media print {
    .header,
    .hero-cta,
    .footer,
    .nav-link.donate-btn,
    .nav-link.contact-btn {
        display: none;
    }
    
    body {
        font-size: 12pt;
        line-height: 1.5;
    }
    
    .container {
        max-width: 100%;
        padding: 0;
    }
    
    .hero {
        background: none !important;
        color: black;
        min-height: auto;
        margin-top: 0;
    }
    
    .hero-title {
        color: black;
        font-size: 18pt;
    }
    
    .hero-subtitle {
        color: black;
    }
}