:root {
    --primary-blue: #073a93;
    --secondary-blue: #00a8e8;
    --dark-blue: #003459;
    --light-blue: #e8f4f8;
    --accent-orange: #ff6b35;
    --text-dark: #2c3e50;
    --text-light: #5a6c7d;
    --white: #ffffff;
    --gray-light: #f8f9fa;
    --shadow-sm: 0 2px 4px rgba(0,0,0,0.08);
    --shadow-md: 0 4px 12px rgba(0,0,0,0.12);
    --shadow-lg: 0 8px 24px rgba(0,0,0,0.16);
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

body {
    font-family: 'Raleway', sans-serif;
    color: var(--text-dark);
    line-height: 1.6;
    overflow-x: hidden;
    background: var(--white);
}

h1, h2, h3, h4, h5, h6 {
    font-family: 'Poppins', sans-serif;
    font-weight: 600;
    line-height: 1.2;
}

.navbar {
    position: fixed;
    top: 0;
    width: 100%;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    box-shadow: var(--shadow-sm);
    z-index: 1000;
    transition: var(--transition);
}

.navbar.scrolled {
    background: rgba(255, 255, 255, 0.98);
    box-shadow: var(--shadow-md);
}

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 1rem 2rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.nav-brand, .nav-brand a {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--primary-blue);
    text-decoration: none;
    font-family: 'Poppins', sans-serif;
}

.logo {
    width: 40px;
    height: 40px;
    color: var(--primary-blue);
    border-radius: 8px;
}

.nav-menu {
    display: flex;
    list-style: none;
    gap: 2rem;
}

.nav-menu a {
    color: var(--text-dark);
    text-decoration: none;
    font-weight: 500;
    transition: var(--transition);
    position: relative;
}

.nav-menu a::after {
    content: '';
    position: absolute;
    bottom: -4px;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--primary-blue);
    transition: var(--transition);
}

.nav-menu a:hover::after {
    width: 100%;
}

.nav-menu a:hover {
    color: var(--primary-blue);
}

.hamburger {
    display: none;
    flex-direction: column;
    cursor: pointer;
    gap: 4px;
}

.hamburger span {
    width: 25px;
    height: 3px;
    background: var(--primary-blue);
    transition: var(--transition);
}

.hamburger.active span:nth-child(1) {
    transform: rotate(45deg) translate(5px, 5px);
}

.hamburger.active span:nth-child(2) {
    opacity: 0;
}

.hamburger.active span:nth-child(3) {
    transform: rotate(-45deg) translate(7px, -6px);
}

.hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    position: relative;
    background: linear-gradient(135deg, var(--light-blue) 0%, var(--white) 100%);
    overflow: hidden;
}

.hero-background {
    position: absolute;
    width: 100%;
    height: 100%;
    top: 0;
    left: 0;
    z-index: 0;
}

.wave {
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100%;
    height: 100px;
    background: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 1440 320'%3E%3Cpath fill='%230077be' fill-opacity='0.3' d='M0,224L48,213.3C96,203,192,181,288,186.7C384,192,480,224,576,224C672,224,768,192,864,186.7C960,181,1056,203,1152,213.3C1248,224,1344,224,1392,224L1440,224L1440,320L1392,320C1344,320,1248,320,1152,320C1056,320,960,320,864,320C768,320,672,320,576,320C480,320,384,320,288,320C192,320,96,320,48,320L0,320Z'%3E%3C/path%3E%3C/svg%3E") repeat-x;
    animation: wave 10s cubic-bezier(0.36, 0.45, 0.63, 0.53) infinite;
}

.wave2 {
    animation: wave 7s cubic-bezier(0.36, 0.45, 0.63, 0.53) -0.125s infinite, swell 7s ease -1.25s infinite;
    opacity: 0.5;
    bottom: 10px;
}

.wave3 {
    animation: wave 15s cubic-bezier(0.36, 0.45, 0.63, 0.53) -0.25s infinite, swell 10s ease -2.5s infinite;
    opacity: 0.3;
    bottom: 20px;
}

@keyframes wave {
    0% {
        transform: translateX(0);
    }
    100% {
        transform: translateX(-1440px);
    }
}

@keyframes swell {
    0%, 100% {
        transform: translateY(0);
    }
    50% {
        transform: translateY(-20px);
    }
}

.hero-content {
    position: relative;
    z-index: 1;
    text-align: center;
    padding: 2rem;
    animation: fadeInUp 1s ease;
}

.hero-title {
    font-size: clamp(3rem, 8vw, 5rem);
    color: var(--dark-blue);
    margin-bottom: 1rem;
    text-shadow: 2px 2px 4px rgba(0,0,0,0.1);
}

.hero-subtitle {
    font-size: clamp(1.2rem, 3vw, 1.8rem);
    color: var(--text-light);
    margin-bottom: 3rem;
    font-weight: 300;
}

.hero-features {
    display: flex;
    gap: 2rem;
    justify-content: center;
    margin-bottom: 3rem;
    flex-wrap: wrap;
}

.feature-badge {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.75rem 1.5rem;
    background: var(--white);
    border-radius: 50px;
    box-shadow: var(--shadow-md);
    font-weight: 500;
    color: var(--text-dark);
}

.feature-badge svg {
    width: 24px;
    height: 24px;
    color: var(--primary-blue);
}

.cta-button {
    display: inline-flex;
    align-items: center;
    gap: 0.75rem;
    padding: 1rem 2rem;
    background: var(--primary-blue);
    color: var(--white);
    text-decoration: none;
    border-radius: 50px;
    font-weight: 600;
    font-size: 1.1rem;
    transition: var(--transition);
    box-shadow: var(--shadow-md);
}

.cta-button:hover {
    background: var(--dark-blue);
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

.cta-button svg {
    width: 20px;
    height: 20px;
}

.cta-button.large {
    padding: 1.25rem 2.5rem;
    font-size: 1.2rem;
}

.scroll-indicator {
    position: absolute;
    bottom: 2rem;
    left: 50%;
    transform: translateX(-50%);
    animation: bounce 2s infinite;
}

.mouse {
    width: 30px;
    height: 50px;
    border: 2px solid var(--primary-blue);
    border-radius: 25px;
    position: relative;
}

.mouse::after {
    content: '';
    position: absolute;
    top: 8px;
    left: 50%;
    transform: translateX(-50%);
    width: 4px;
    height: 8px;
    background: var(--primary-blue);
    border-radius: 2px;
    animation: scroll 2s infinite;
}

@keyframes bounce {
    0%, 20%, 50%, 80%, 100% {
        transform: translateX(-50%) translateY(0);
    }
    40% {
        transform: translateX(-50%) translateY(-10px);
    }
    60% {
        transform: translateX(-50%) translateY(-5px);
    }
}

@keyframes scroll {
    0% {
        opacity: 1;
        transform: translateX(-50%) translateY(0);
    }
    100% {
        opacity: 0;
        transform: translateX(-50%) translateY(15px);
    }
}

.section {
    padding: 5rem 0;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 2rem;
}

.section-title {
    font-size: clamp(2rem, 5vw, 3rem);
    text-align: center;
    margin-bottom: 1rem;
    color: var(--dark-blue);
}

.section-lead {
    font-size: 1.25rem;
    text-align: center;
    color: var(--text-light);
    margin-bottom: 3rem;
    max-width: 800px;
    margin-left: auto;
    margin-right: auto;
}

.mission {
    background: var(--gray-light);
}

.mission-content {
    max-width: 800px;
    margin: 0 auto 3rem;
    text-align: center;
    font-size: 1.1rem;
    line-height: 1.8;
    color: var(--text-dark);
}

.stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 2rem;
    margin-top: 3rem;
}

.stat-card {
    text-align: center;
    padding: 2rem;
    background: var(--white);
    border-radius: 16px;
    box-shadow: var(--shadow-md);
    transition: var(--transition);
}

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

.stat-number {
    font-size: 3rem;
    font-weight: 700;
    color: var(--primary-blue);
    margin-bottom: 0.5rem;
}

.stat-label {
    font-size: 1rem;
    color: var(--text-light);
    text-transform: uppercase;
    letter-spacing: 1px;
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 2rem;
    margin-top: 3rem;
}

.feature-card {
    padding: 2rem;
    background: var(--white);
    border-radius: 16px;
    box-shadow: var(--shadow-sm);
    transition: var(--transition);
    border: 2px solid transparent;
}

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

.feature-icon {
    width: 60px;
    height: 60px;
    background: var(--light-blue);
    border-radius: 12px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 1.5rem;
}

.feature-icon svg {
    width: 30px;
    height: 30px;
    color: var(--primary-blue);
}

.feature-card h3 {
    font-size: 1.5rem;
    margin-bottom: 1rem;
    color: var(--dark-blue);
}

.feature-card p {
    color: var(--text-light);
    line-height: 1.6;
}

.importance {
    background: linear-gradient(135deg, var(--light-blue) 0%, var(--white) 100%);
}

.importance-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
    margin-top: 3rem;
}

.importance-card {
    padding: 2rem;
    background: var(--white);
    border-radius: 16px;
    box-shadow: var(--shadow-md);
}

.importance-card.highlight {
    background: var(--primary-blue);
    color: var(--white);
}

.importance-card h3 {
    font-size: 1.5rem;
    margin-bottom: 1rem;
    color: var(--dark-blue);
}

.importance-card.highlight h3 {
    color: var(--white);
}

.importance-card blockquote {
    font-size: 1.25rem;
    font-style: italic;
    line-height: 1.8;
    position: relative;
    padding: 1rem;
}

.importance-card blockquote::before {
    content: '"';
    font-size: 4rem;
    position: absolute;
    top: -1rem;
    left: 0;
    opacity: 0.3;
}

.engagement {
    background: var(--gray-light);
}

.commitment-cards {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
    margin-top: 3rem;
}

.commitment-card {
    padding: 2rem;
    background: var(--white);
    border-radius: 16px;
    text-align: center;
    box-shadow: var(--shadow-sm);
    transition: var(--transition);
}

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

.commitment-icon {
    font-size: 3rem;
    margin-bottom: 1rem;
}

.commitment-card h3 {
    font-size: 1.5rem;
    margin-bottom: 0.5rem;
    color: var(--dark-blue);
}

.commitment-card p {
    color: var(--text-light);
}

.community {
    background: linear-gradient(135deg, var(--white) 0%, var(--light-blue) 100%);
}

.community-content {
    max-width: 800px;
    margin: 0 auto;
    text-align: center;
    font-size: 1.1rem;
    line-height: 1.8;
}

.highlight-text {
    margin-top: 2rem;
    padding: 2rem;
    background: var(--white);
    border-left: 4px solid var(--primary-blue);
    border-radius: 8px;
    font-weight: 500;
    color: var(--dark-blue);
    box-shadow: var(--shadow-sm);
}

.rejoindre {
    background: var(--dark-blue);
    color: var(--white);
}

.rejoindre .section-title {
    color: var(--white);
}

.rejoindre .section-lead {
    color: rgba(255, 255, 255, 0.9);
}

.join-content {
    max-width: 800px;
    margin: 0 auto;
    text-align: center;
    font-size: 1.1rem;
    line-height: 1.8;
    color: rgba(255, 255, 255, 0.9);
}

.cta-group {
    margin-top: 3rem;
    display: flex;
    justify-content: center;
    gap: 1rem;
    flex-wrap: wrap;
}

.aider {
    background: var(--gray-light);
}

.help-list {
    max-width: 600px;
    margin: 2rem auto;
    list-style: none;
}

.help-list li {
    padding: 1rem;
    margin-bottom: 1rem;
    background: var(--white);
    border-radius: 8px;
    border-left: 4px solid var(--primary-blue);
    box-shadow: var(--shadow-sm);
    font-size: 1.1rem;
    color: var(--text-dark);
}

.help-actions {
    display: flex;
    justify-content: center;
    gap: 2rem;
    margin-top: 3rem;
    flex-wrap: wrap;
}

.action-button {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.75rem;
    padding: 1.5rem;
    background: var(--white);
    border-radius: 16px;
    box-shadow: var(--shadow-md);
    text-decoration: none;
    color: var(--text-dark);
    font-weight: 600;
    transition: var(--transition);
    min-width: 150px;
}

.action-button:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-lg);
    color: var(--primary-blue);
}

.action-button svg {
    width: 40px;
    height: 40px;
    color: var(--primary-blue);
}

.partners {
    background: var(--white);
}

.partners-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 2rem;
    margin-top: 3rem;
}

.partner-placeholder {
    padding: 3rem 2rem;
    background: var(--gray-light);
    border-radius: 12px;
    text-align: center;
    color: var(--text-light);
    font-weight: 500;
    border: 2px dashed var(--text-light);
}

.footer {
    background: var(--dark-blue);
    color: var(--white);
    padding: 3rem 0 1rem;
}

.footer-content {
    display: grid;
    grid-template-columns: 2fr 1fr;
    gap: 3rem;
    margin-bottom: 2rem;
}

.footer-quote {
    font-style: italic;
    font-size: 1.1rem;
    line-height: 1.8;
}

.footer-signature {
    margin-top: 1rem;
    font-weight: 600;
    color: var(--secondary-blue);
}

.footer-links {
    display: flex;
    flex-direction: column;
    gap: 1rem;
    align-items: flex-end;
}

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

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

.footer-bottom {
    padding-top: 2rem;
    border-top: 1px solid rgba(255, 255, 255, 0.1);
    text-align: center;
    color: rgba(255, 255, 255, 0.6);
}

.back-to-top {
    position: fixed;
    bottom: 2rem;
    right: 2rem;
    width: 50px;
    height: 50px;
    background: var(--primary-blue);
    color: var(--white);
    border: none;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    opacity: 0;
    visibility: hidden;
    transition: var(--transition);
    box-shadow: var(--shadow-md);
    z-index: 999;
}

.back-to-top.visible {
    opacity: 1;
    visibility: visible;
}

.back-to-top:hover {
    background: var(--dark-blue);
    transform: translateY(-5px);
    box-shadow: var(--shadow-lg);
}

.back-to-top svg {
    width: 24px;
    height: 24px;
}

@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.fade-in {
    animation: fadeInUp 0.8s ease forwards;
}

@media (max-width: 768px) {
    .nav-menu {
        position: fixed;
        left: -100%;
        top: 70px;
        flex-direction: column;
        background: var(--white);
        width: 100%;
        text-align: center;
        transition: 0.3s;
        box-shadow: var(--shadow-lg);
        padding: 2rem 0;
    }

    .nav-menu.active {
        left: 0;
    }

    .hamburger {
        display: flex;
    }

    .hero-features {
        flex-direction: column;
        align-items: center;
    }

    .features-grid,
    .importance-grid,
    .commitment-cards,
    .partners-grid {
        grid-template-columns: 1fr;
    }

    .footer-content {
        grid-template-columns: 1fr;
        text-align: center;
    }

    .footer-links {
        align-items: center;
    }

    .help-actions {
        flex-direction: column;
        align-items: center;
    }

    .action-button {
        width: 100%;
        max-width: 300px;
    }
}