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

:root {
    --primary-color: #2c5aa0;
    --secondary-color: #3d6bb3;
    --accent-color: #ffd700;
    --success-color: #28a745;
    --text-dark: #333;
    --text-light: #666;
    --background-light: #f8f9fa;
    --white: #ffffff;
    --shadow: 0 5px 20px rgba(0, 0, 0, 0.1);
    --shadow-hover: 0 10px 30px rgba(0, 0, 0, 0.15);
    --border-radius: 15px;
    --transition: all 0.3s ease;
}

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    line-height: 1.6;
    color: var(--text-dark);
    overflow-x: hidden;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

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

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    height: 70px;
}

.nav-logo h2 {
    color: var(--primary-color);
    font-size: 1.5rem;
    font-weight: 700;
}

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

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

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

.nav-link::after {
    content: '';
    position: absolute;
    width: 0;
    height: 2px;
    bottom: -5px;
    left: 0;
    background-color: var(--primary-color);
    transition: var(--transition);
}

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

.nav-toggle {
    display: none;
    flex-direction: column;
    cursor: pointer;
}

.bar {
    width: 25px;
    height: 3px;
    background-color: var(--text-dark);
    margin: 3px 0;
    transition: var(--transition);
}

/* Section Hero */
.hero {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: var(--white);
    padding: 120px 0 80px;
    min-height: 100vh;
    display: flex;
    align-items: center;
    position: relative;
    overflow: hidden;
}

.hero::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 100 100"><defs><pattern id="grain" width="100" height="100" patternUnits="userSpaceOnUse"><circle cx="20" cy="20" r="1" fill="%23ffffff" opacity="0.1"/><circle cx="80" cy="80" r="1" fill="%23ffffff" opacity="0.1"/><circle cx="40" cy="60" r="1" fill="%23ffffff" opacity="0.1"/></pattern></defs><rect width="100" height="100" fill="url(%23grain)"/></svg>');
    opacity: 0.3;
}

.hero-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: center;
    position: relative;
    z-index: 1;
}

.hero-content h1 {
    font-size: 3.5rem;
    font-weight: 700;
    margin-bottom: 1.5rem;
    line-height: 1.2;
}

.hero-subtitle {
    font-size: 1.2rem;
    margin-bottom: 2.5rem;
    opacity: 0.9;
    line-height: 1.6;
}

.hero-stats {
    display: flex;
    gap: 2rem;
    margin-bottom: 2.5rem;
}

.stat {
    text-align: center;
}

.stat h3 {
    font-size: 2rem;
    font-weight: 700;
    color: var(--accent-color);
    margin-bottom: 0.5rem;
}

.stat p {
    font-size: 0.9rem;
    opacity: 0.8;
}

.hero-buttons {
    display: flex;
    gap: 1rem;
    flex-wrap: wrap;
}

.cta-button {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 15px 30px;
    text-decoration: none;
    border-radius: 50px;
    font-weight: 600;
    font-size: 1.1rem;
    transition: var(--transition);
    cursor: pointer;
}

.cta-button.primary {
    background: var(--accent-color);
    color: var(--text-dark);
    box-shadow: 0 5px 20px rgba(255, 215, 0, 0.3);
}

.cta-button.primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(255, 215, 0, 0.4);
}

.cta-button.secondary {
    background: transparent;
    color: var(--white);
    border: 2px solid var(--white);
}

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

.hero-image {
    display: flex;
    justify-content: center;
    align-items: center;
}

.floating-card {
    background: rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(10px);
    padding: 2rem;
    border-radius: var(--border-radius);
    text-align: center;
    border: 1px solid rgba(255, 255, 255, 0.2);
    animation: float 3s ease-in-out infinite;
}

.floating-card i {
    font-size: 3rem;
    margin-bottom: 1rem;
    color: var(--accent-color);
}

.floating-card h4 {
    font-size: 1.3rem;
    margin-bottom: 0.5rem;
}

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

/* Sections générales */
.section-title {
    text-align: center;
    font-size: 2.5rem;
    margin-bottom: 3rem;
    color: var(--primary-color);
    font-weight: 700;
    position: relative;
}

.section-title::after {
    content: '';
    position: absolute;
    bottom: -10px;
    left: 50%;
    transform: translateX(-50%);
    width: 80px;
    height: 4px;
    background: var(--accent-color);
    border-radius: 2px;
}

/* Section Concept */
.concept {
    padding: 80px 0;
    background: var(--white);
}

.concept-content {
    max-width: 800px;
    margin: 0 auto;
    text-align: center;
}

.concept-text h3 {
    font-size: 2rem;
    margin-bottom: 1.5rem;
    color: var(--primary-color);
}

.concept-text p {
    font-size: 1.1rem;
    margin-bottom: 3rem;
    color: var(--text-light);
    line-height: 1.8;
}

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

.value-prop {
    background: var(--background-light);
    padding: 2rem;
    border-radius: var(--border-radius);
    transition: var(--transition);
    border: 2px solid transparent;
}

.value-prop:hover {
    transform: translateY(-5px);
    border-color: var(--primary-color);
    box-shadow: var(--shadow-hover);
}

.value-prop i {
    font-size: 3rem;
    color: var(--primary-color);
    margin-bottom: 1rem;
}

.value-prop h4 {
    font-size: 1.3rem;
    margin-bottom: 1rem;
    color: var(--text-dark);
}

.value-prop p {
    font-size: 0.95rem;
    color: var(--text-light);
    line-height: 1.6;
}

/* Section Marché */
.market {
    padding: 80px 0;
    background: var(--background-light);
}

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

.market-card {
    background: var(--white);
    padding: 2.5rem;
    border-radius: var(--border-radius);
    text-align: center;
    box-shadow: var(--shadow);
    transition: var(--transition);
    border: 2px solid transparent;
}

.market-card:hover {
    transform: translateY(-10px);
    box-shadow: var(--shadow-hover);
    border-color: var(--primary-color);
}

.market-icon {
    width: 80px;
    height: 80px;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 1.5rem;
}

.market-icon i {
    font-size: 2rem;
    color: var(--white);
}

.market-card h3 {
    font-size: 1.3rem;
    margin-bottom: 1rem;
    color: var(--text-dark);
}

.market-value {
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--primary-color);
    margin-bottom: 1rem;
}

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

/* Section Investissement */
.investment {
    padding: 80px 0;
    background: var(--white);
}

.investment-overview {
    text-align: center;
    margin-bottom: 4rem;
}

.investment-summary h3 {
    font-size: 2rem;
    color: var(--primary-color);
    margin-bottom: 1rem;
}

.investment-summary p {
    font-size: 1.1rem;
    color: var(--text-light);
    max-width: 800px;
    margin: 0 auto;
    line-height: 1.8;
}

.investment-details-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
    gap: 2rem;
    margin-bottom: 4rem;
}

.investment-card {
    background: var(--white);
    border-radius: var(--border-radius);
    overflow: hidden;
    box-shadow: var(--shadow);
    transition: var(--transition);
    border: 2px solid transparent;
}

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

.investment-card.highlight {
    border-color: var(--accent-color);
    box-shadow: 0 5px 20px rgba(255, 215, 0, 0.2);
}

.card-header {
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    color: var(--white);
    padding: 2rem;
    text-align: center;
}

.card-header i {
    font-size: 2.5rem;
    margin-bottom: 1rem;
}

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

.card-body {
    padding: 2rem;
}

.investment-amount {
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--primary-color);
    text-align: center;
    margin-bottom: 1rem;
}

.card-body p {
    color: var(--text-light);
    margin-bottom: 1.5rem;
    line-height: 1.6;
}

.funding-breakdown,
.revenue-streams {
    list-style: none;
    margin: 1.5rem 0;
}

.funding-breakdown li {
    display: flex;
    justify-content: space-between;
    padding: 0.5rem 0;
    border-bottom: 1px solid #eee;
}

.funding-breakdown li:last-child {
    border-bottom: none;
}

.revenue-streams li {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.5rem 0;
}

.revenue-streams i {
    color: var(--success-color);
}

.valuation-metrics {
    display: flex;
    justify-content: space-between;
    margin-top: 1.5rem;
}

.metric {
    text-align: center;
}

.metric-label {
    display: block;
    font-size: 0.9rem;
    color: var(--text-light);
    margin-bottom: 0.5rem;
}

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

.break-even {
    background: var(--background-light);
    padding: 1rem;
    border-radius: 8px;
    text-align: center;
    margin-top: 1.5rem;
    color: var(--primary-color);
}

/* Roadmap */
.roadmap {
    margin-top: 4rem;
}

.roadmap h3 {
    text-align: center;
    font-size: 2rem;
    color: var(--primary-color);
    margin-bottom: 3rem;
}

.timeline {
    position: relative;
    max-width: 800px;
    margin: 0 auto;
}

.timeline::before {
    content: '';
    position: absolute;
    left: 50%;
    transform: translateX(-50%);
    width: 4px;
    height: 100%;
    background: var(--primary-color);
    top: 0;
}

.timeline-item {
    position: relative;
    margin-bottom: 3rem;
    width: 50%;
}

.timeline-item:nth-child(odd) {
    left: 0;
    text-align: right;
    padding-right: 2rem;
}

.timeline-item:nth-child(even) {
    left: 50%;
    text-align: left;
    padding-left: 2rem;
}

.timeline-marker {
    position: absolute;
    width: 20px;
    height: 20px;
    background: var(--accent-color);
    border-radius: 50%;
    top: 0;
}

.timeline-item:nth-child(odd) .timeline-marker {
    right: -10px;
}

.timeline-item:nth-child(even) .timeline-marker {
    left: -10px;
}

.timeline-content {
    background: var(--white);
    padding: 1.5rem;
    border-radius: var(--border-radius);
    box-shadow: var(--shadow);
    border: 2px solid transparent;
    transition: var(--transition);
}

.timeline-content:hover {
    border-color: var(--primary-color);
    transform: translateY(-2px);
}

.timeline-content h4 {
    color: var(--primary-color);
    font-size: 1.3rem;
    margin-bottom: 0.5rem;
}

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

/* Section Contact */
.contact {
    padding: 80px 0;
    background: var(--background-light);
}

.contact-intro {
    text-align: center;
    margin-bottom: 3rem;
}

.contact-intro p {
    font-size: 1.1rem;
    color: var(--text-light);
    max-width: 800px;
    margin: 0 auto;
    line-height: 1.8;
}

.contact-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 4rem;
    align-items: start;
}

.contact-info h3 {
    font-size: 2rem;
    margin-bottom: 1rem;
    color: var(--primary-color);
}

.contact-info > p {
    font-size: 1.1rem;
    color: var(--text-light);
    margin-bottom: 2rem;
}

.contact-details {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
    margin-bottom: 2rem;
}

.contact-item {
    display: flex;
    align-items: flex-start;
    gap: 1rem;
}

.contact-item i {
    font-size: 1.5rem;
    color: var(--primary-color);
    width: 30px;
    margin-top: 0.2rem;
}

.contact-item div {
    display: flex;
    flex-direction: column;
}

.contact-item strong {
    color: var(--text-dark);
    margin-bottom: 0.2rem;
}

.contact-item span {
    color: var(--text-light);
}

.investment-cta {
    background: var(--white);
    padding: 2rem;
    border-radius: var(--border-radius);
    box-shadow: var(--shadow);
}

.investment-cta h4 {
    color: var(--primary-color);
    margin-bottom: 1rem;
    font-size: 1.3rem;
}

.investment-cta ul {
    list-style: none;
}

.investment-cta li {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.5rem 0;
    color: var(--text-light);
}

.investment-cta i {
    color: var(--accent-color);
}

.contact-form {
    background: var(--white);
    padding: 2.5rem;
    border-radius: var(--border-radius);
    box-shadow: var(--shadow);
}

.contact-form h3 {
    color: var(--primary-color);
    margin-bottom: 2rem;
    font-size: 1.5rem;
}

.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1rem;
    margin-bottom: 1.5rem;
}

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

.form-group label {
    margin-bottom: 0.5rem;
    font-weight: 500;
    color: var(--text-dark);
}

.form-group input,
.form-group select,
.form-group textarea {
    padding: 12px;
    border: 2px solid #e9ecef;
    border-radius: 8px;
    font-size: 1rem;
    transition: var(--transition);
    font-family: inherit;
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(44, 90, 160, 0.1);
}

.submit-btn {
    width: 100%;
    background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    color: var(--white);
    padding: 15px;
    border: none;
    border-radius: 8px;
    font-size: 1.1rem;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    margin-bottom: 1rem;
}

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

.form-note {
    text-align: center;
    font-size: 0.9rem;
    color: var(--text-light);
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
}

.form-note i {
    color: var(--success-color);
}

/* Footer */
.footer {
    background: #1a1a1a;
    color: var(--white);
    padding: 3rem 0 1rem;
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
    margin-bottom: 2rem;
}

.footer-section h3,
.footer-section h4 {
    margin-bottom: 1rem;
    color: var(--accent-color);
}

.footer-section p {
    color: #ccc;
    line-height: 1.6;
    margin-bottom: 1rem;
}

.footer-links a {
    color: var(--accent-color);
    text-decoration: none;
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    transition: var(--transition);
}

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

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

.footer-section ul li {
    margin-bottom: 0.5rem;
}

.footer-section ul li a {
    color: #ccc;
    text-decoration: none;
    transition: var(--transition);
}

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

.footer-bottom {
    text-align: center;
    padding-top: 2rem;
    border-top: 1px solid #333;
    color: #999;
}

.footer-bottom p {
    margin-bottom: 0.5rem;
}

.disclaimer {
    font-size: 0.8rem;
    font-style: italic;
}

/* Messages de succès/erreur */
.success-message {
    background: #d4edda;
    color: #155724;
    border: 1px solid #c3e6cb;
    padding: 20px;
    border-radius: var(--border-radius);
    margin-bottom: 20px;
    text-align: center;
}

.error-message {
    background: #f8d7da;
    color: #721c24;
    border: 1px solid #f5c6cb;
    padding: 20px;
    border-radius: var(--border-radius);
    margin-bottom: 20px;
    text-align: center;
}

.message-container {
    max-width: 600px;
    margin: 120px auto 50px;
    padding: 20px;
}

.back-button {
    display: inline-block;
    background: var(--primary-color);
    color: var(--white);
    padding: 12px 25px;
    text-decoration: none;
    border-radius: 25px;
    margin-top: 20px;
    transition: var(--transition);
}

.back-button:hover {
    background: var(--secondary-color);
    transform: translateY(-2px);
}

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

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

    .nav-toggle {
        display: flex;
    }

    .hero-container {
        grid-template-columns: 1fr;
        text-align: center;
        gap: 2rem;
    }

    .hero-content h1 {
        font-size: 2.5rem;
    }

    .hero-stats {
        justify-content: center;
    }

    .hero-buttons {
        justify-content: center;
    }

    .contact-content {
        grid-template-columns: 1fr;
        gap: 2rem;
    }

    .investment-details-grid {
        grid-template-columns: 1fr;
    }

    .market-grid {
        grid-template-columns: 1fr;
    }

    .value-props {
        grid-template-columns: 1fr;
    }

    .section-title {
        font-size: 2rem;
    }

    .form-row {
        grid-template-columns: 1fr;
    }

    .timeline::before {
        left: 20px;
    }

    .timeline-item {
        width: 100%;
        left: 0 !important;
        text-align: left !important;
        padding-left: 3rem !important;
        padding-right: 0 !important;
    }

    .timeline-marker {
        left: 10px !important;
        right: auto !important;
    }
}

@media (max-width: 480px) {
    .hero-content h1 {
        font-size: 2rem;
    }

    .hero-stats {
        flex-direction: column;
        gap: 1rem;
    }

    .contact-form {
        padding: 1.5rem;
    }

    .investment-card .card-body {
        padding: 1.5rem;
    }
}

/* Animations d'entrée */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.hero-content {
    animation: fadeInUp 1s ease-out;
}

.market-card,
.investment-card,
.value-prop {
    animation: fadeInUp 0.6s ease-out;
}

.market-card:nth-child(2) {
    animation-delay: 0.2s;
}

.market-card:nth-child(3) {
    animation-delay: 0.4s;
}

.investment-card:nth-child(2) {
    animation-delay: 0.2s;
}

.investment-card:nth-child(3) {
    animation-delay: 0.4s;
}