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

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
    line-height: 1.6;
    color: #1f2937;
    overflow-x: hidden;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 1.5rem;
}

h1, 
h2, 
h3, 
h4, 
h5, 
h6 {
    text-wrap: balance;
}
h2 {
    line-height: 1.15;
}
a {
    color: inherit;
}

/* header */
.site-header {
    background: transparent;
    color: white;
    padding: 1rem 0;
    position: fixed;
    width: 100%;
    top: 0;
    left: 0;
    z-index: 1000;
    /* dégradé vertical vers transparent */
    background: linear-gradient(to bottom, rgba(7, 0, 84, 0.43), #20208357, rgba(37, 24, 157, 0));
    backdrop-filter: blur(10px);

    .header-content {
        display: flex;
        justify-content: space-between;
        align-items: center;
    }
    .logo {
        font-size: 1.5rem;
        font-weight: bold;
        display: flex;
        align-items: center;
        gap: 5px;

        img {
            width: 65px;
        }
        .c--alt {
            color: #23DBED;
        }
    }
    .nav-menu { 
        .btn-primary {
            padding: .5rem 1rem;
            box-shadow: 0 4px 15px -4px rgba(0, 77, 133, 0.5);
        }
        ul {
            list-style: none;
            display: flex;
            align-items: center;
            gap: 2rem;
        }
        a {
            color: white;
            text-decoration: none;
            font-weight: 500;
            transition: color 0.3s ease;
        }
    }
}

/* Hero Section */
.hero {
    position: relative;
    min-height: 100vh;
    display: flex;
    align-items: center;
    background: linear-gradient(to bottom right, #172554, #1e3a8a, #581c87);
    overflow: hidden;

    .cta-buttons {
        justify-content: flex-start;
    }
    &::before {
        content: '';
        position: absolute;
        inset: 0;
        z-index: 1;
        mix-blend-mode: overlay;
        opacity: 0.5;
        background: url('../img/img4.avif') no-repeat center center/cover;
        z-index: 1;
    }
}

.background-pattern {
    position: absolute;
    inset: 0;
    opacity: 0.1;
    background-image: repeating-linear-gradient(0deg, transparent, transparent 2px, rgba(255,255,255,0.1) 2px, rgba(255,255,255,0.1) 4px);
}

.gradient-orb {
    position: absolute;
    width: 384px;
    height: 384px;
    border-radius: 50%;
    filter: blur(80px);
    opacity: 0.2;
    mix-blend-mode: multiply;
    animation: pulse 3s ease-in-out infinite;
}

.orb-1 {
    top: 80px;
    right: 80px;
    background: #06b6d4;
}

.orb-2 {
    bottom: 80px;
    left: 80px;
    background: #a855f7;
    animation-delay: 1s;
}

@keyframes pulse {
    0%, 100% { opacity: 0.2; transform: scale(1); }
    50% { opacity: 0.3; transform: scale(1.05); }
}

.hero-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 3rem;
    align-items: center;
    position: relative;
    z-index: 10;
    padding: 5rem 0;
}

.hero-text {
    color: white;
}

.badge {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    background: rgba(6, 182, 212, 0.2);
    backdrop-filter: blur(8px);
    border: 1px solid rgba(103, 232, 249, 0.3);
    border-radius: 9999px;
    padding: 0.5rem 1rem;
    font-size: 0.875rem;
    color: #67e8f9;
    margin-bottom: 2rem;
}

.badge .icon {
    width: 20px;
    height: 20px;
    color: #67e8f9;
}

.gradient-text {
    font-size: 3.75rem;
    font-weight: bold;
    background: linear-gradient(to right, #22d3ee, #c084fc);
    -webkit-background-clip: text;
    background-clip: text;
    color: transparent;
    margin-bottom: 1rem;
}

.hero-text h2 {
    font-size: 2.25rem;
    font-weight: bold;
    line-height: 1.2;
    margin-bottom: 1rem;
}

.tagline {
    font-size: 1.25rem;
    color: #67e8f9;
    font-weight: 500;
    margin-bottom: 2rem;
}

.description {
    font-size: 1.125rem;
    color: #d1d5db;
    line-height: 1.75;
    margin-bottom: 2rem;
}

.cta-buttons {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 1rem;
    margin-top: 2rem;
}

.btn-primary {
    background: linear-gradient(to right, #06b6d4, #9333ea);
    color: white;
    padding: 1rem 2rem;
    border-radius: 9999px;
    font-weight: 600;
    border: none;
    cursor: pointer;
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    box-shadow: 0 20px 25px -5px rgba(6, 182, 212, 0.5);
    transition: all 0.3s ease;
}

.btn-primary:hover {
    transform: scale(1.05);
    background: linear-gradient(to right, #0891b2, #7e22ce);
}

.btn-primary .icon {
    width: 20px;
    height: 20px;
}

.btn-secondary {
    background: rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(8px);
    border: 1px solid rgba(255, 255, 255, 0.2);
    color: white;
    padding: 1rem 2rem;
    border-radius: 9999px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
}

.btn-secondary:hover {
    background: rgba(255, 255, 255, 0.2);
}

.hero-image {
    position: relative;
}

.image-glow {
    position: absolute;
    inset: 0;
    background: linear-gradient(to top right, rgba(6, 182, 212, 0.2), rgba(168, 85, 247, 0.2));
    border-radius: 1.5rem;
    filter: blur(60px);
}

.hero-image img {
    position: relative;
    width: 100%;
    height: auto;
    border-radius: 1.5rem;
    box-shadow: 0 25px 50px -12px rgba(168, 85, 247, 0.5);
}

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

.mouse {
    width: 24px;
    height: 40px;
    border: 2px solid rgba(255, 255, 255, 0.3);
    border-radius: 12px;
    display: flex;
    justify-content: center;
}

.wheel {
    width: 6px;
    height: 12px;
    background: #67e8f9;
    border-radius: 3px;
    margin-top: 8px;
}

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

/* About Section */
.about {
    padding: 5rem 0;
    background: white;
}

.section-header {
    max-width: 56rem;
    margin: 0 auto 4rem;
    text-align: center;
}

.section-header h2 {
    font-size: 2.5rem;
    font-weight: bold;
    color: #111827;
    margin-bottom: 1.5rem;
}

.section-header p {
    font-size: 1.25rem;
    color: #4b5563;
    line-height: 1.75;
}

.features-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
    max-width: 1100px;
    margin: 0 auto;
}

.feature-card {
    padding: 2rem;
    border-radius: 1rem;
    border: 1px solid;
    transition: all 0.3s ease;
}

.feature-card:hover {
    box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.15);
    transform: translateY(-4px);
}

.feature-card.cyan {
    background: linear-gradient(to bottom right, #ecfeff, #dbeafe);
    border-color: #a5f3fc;
}

.feature-card.purple {
    background: linear-gradient(to bottom right, #faf5ff, #fce7f3);
    border-color: #e9d5ff;
}

.feature-card.blue {
    background: linear-gradient(to bottom right, #dbeafe, #f3e8ff);
    border-color: #bfdbfe;
}

.feature-icon {
    width: 64px;
    height: 64px;
    border-radius: 1rem;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 1.5rem;
    transition: transform 0.3s ease;
}

.feature-card:hover .feature-icon {
    transform: scale(1.1);
}

.feature-card.cyan .feature-icon {
    background: linear-gradient(to bottom right, #06b6d4, #2563eb);
}

.feature-card.purple .feature-icon {
    background: linear-gradient(to bottom right, #a855f7, #ec4899);
}

.feature-card.blue .feature-icon {
    background: linear-gradient(to bottom right, #3b82f6, #9333ea);
}

.feature-icon svg {
    color: white;
}

.feature-card h3 {
    font-size: 1.25rem;
    font-weight: bold;
    color: #111827;
    margin-bottom: 0.75rem;
}

.feature-card p {
    color: #4b5563;
    line-height: 1.75;
}

/* Objectives Section */
.objectives {
    padding: 5rem 0;
    background: linear-gradient(to bottom right, #f9fafb, #dbeafe);
}

.objectives-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
    max-width: 1100px;
    margin: 0 auto;
}

.objective-card {
    position: relative;
    padding: 2rem;
    border-radius: 1.5rem;
    border: 2px solid;
    transition: all 0.3s ease;
}

.objective-card:hover {
    box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.25);
    transform: translateY(-8px);
}

.objective-card.cyan {
    background: linear-gradient(to bottom right, #ecfeff, #dbeafe);
    border-color: #a5f3fc;
}

.objective-card.purple {
    background: linear-gradient(to bottom right, #faf5ff, #fce7f3);
    border-color: #e9d5ff;
}

.objective-card.blue {
    background: linear-gradient(to bottom right, #dbeafe, #f3e8ff);
    border-color: #bfdbfe;
}

.objective-icon {
    position: absolute;
    top: -24px;
    left: 2rem;
    width: 56px;
    height: 56px;
    border-radius: 1rem;
    display: flex;
    align-items: center;
    justify-content: center;
    box-shadow: 0 10px 15px -3px rgba(0, 0, 0, 0.2);
}

.objective-card.cyan .objective-icon {
    background: linear-gradient(to bottom right, #06b6d4, #2563eb);
}

.objective-card.purple .objective-icon {
    background: linear-gradient(to bottom right, #a855f7, #ec4899);
}

.objective-card.blue .objective-icon {
    background: linear-gradient(to bottom right, #3b82f6, #9333ea);
}

.objective-icon svg {
    color: white;
}

.objective-card h3 {
    font-size: 1.25rem;
    font-weight: bold;
    color: #111827;
    margin: 1.5rem 0 1rem;
}

.objective-card p {
    color: #4b5563;
    line-height: 1.75;
}

.objective-card::after {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    height: 4px;
    border-radius: 0 0 1.5rem 1.5rem;
}

.objective-card.cyan::after {
    background: linear-gradient(to right, #06b6d4, #2563eb);
}

.objective-card.purple::after {
    background: linear-gradient(to right, #a855f7, #ec4899);
}

.objective-card.blue::after {
    background: linear-gradient(to right, #3b82f6, #9333ea);
}

/* Training Path Section */
.training-path {
    padding: 5rem 0;
    background: white;
}

.path-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(400px, 1fr));
    gap: 2rem;
    max-width: 1100px;
    margin: 0 auto;
}

.path-card {
    position: relative;
    background: white;
    border-radius: 1.5rem;
    padding: 2rem;
    box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.1);
    border: 2px solid;
}

.path-card.cyan {
    border-color: #a5f3fc;
}

.path-card.cyan::before {
    content: '';
    position: absolute;
    inset: -4px;
    background: linear-gradient(to right, #06b6d4, #2563eb);
    border-radius: 1.5rem;
    filter: blur(8px);
    opacity: 0.25;
    z-index: -1;
}

.path-card.purple {
    border-color: #e9d5ff;
}

.path-card.purple::before {
    content: '';
    position: absolute;
    inset: -4px;
    background: linear-gradient(to right, #a855f7, #ec4899);
    border-radius: 1.5rem;
    filter: blur(8px);
    opacity: 0.25;
    z-index: -1;
}

.path-header {
    display: flex;
    align-items: center;
    gap: 1rem;
    margin-bottom: 1.5rem;
}

.path-icon {
    width: 48px;
    height: 48px;
    border-radius: 0.75rem;
    display: flex;
    align-items: center;
    justify-content: center;
}

.path-card.cyan .path-icon {
    background: linear-gradient(to bottom right, #06b6d4, #2563eb);
}

.path-card.purple .path-icon {
    background: linear-gradient(to bottom right, #a855f7, #ec4899);
}

.path-icon svg {
    color: white;
}

.step-label {
    font-size: 0.875rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    display: block;
}

.path-card.cyan .step-label {
    color: #0891b2;
}

.path-card.purple .step-label {
    color: #9333ea;
}

.path-header h3 {
    font-size: 1.5rem;
    font-weight: bold;
    color: #111827;
}

.async-label {
    font-size: 0.875rem;
    color: #6b7280;
}

.path-details {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.detail-item {
    display: flex;
    align-items: flex-start;
    gap: 0.75rem;
}

.detail-icon {
    flex-shrink: 0;
    margin-top: 2px;
}

.path-card.cyan .detail-icon {
    color: #0891b2;
}

.path-card.purple .detail-icon {
    color: #9333ea;
}

.detail-item strong {
    display: block;
    font-weight: 600;
    color: #111827;
    margin-bottom: 0.25rem;
}

.detail-item p {
    color: #4b5563;
}

.path-tag {
    margin-top: 1.5rem;
    padding-top: 1.5rem;
    border-top: 1px solid #e5e7eb;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.tag-dot {
    width: 12px;
    height: 12px;
    border-radius: 50%;
}

.tag-dot.cyan {
    background: #06b6d4;
}

.tag-dot.purple {
    background: #a855f7;
}

.path-tag span {
    font-size: 0.875rem;
    font-weight: 500;
    color: #374151;
}

.info-box {
    max-width: 56rem;
    margin: 3rem auto 0;
    background: linear-gradient(to right, #fffbeb, #fff7ed);
    border-left: 4px solid #f59e0b;
    border-radius: 0.75rem;
    padding: 1.5rem;
    display: flex;
    gap: 0.75rem;
}

.info-icon {
    width: 24px;
    height: 24px;
    background: #f59e0b;
    border-radius: 0.5rem;
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-weight: bold;
    font-size: 0.875rem;
    flex-shrink: 0;
    margin-top: 2px;
}

.info-box h4 {
    font-weight: bold;
    color: #111827;
    margin-bottom: 0.5rem;
}

.info-box p {
    color: #374151;
    line-height: 1.75;
}

/* CTA Section */
.cta {
    padding: 5rem 0;
    background: linear-gradient(to bottom right, #172554, #581c87, #172554);
    position: relative;
    overflow: hidden;
}

.cta-background {
    position: absolute;
    inset: 0;
    opacity: 0.2;
}

.cta-orb {
    position: absolute;
    width: 384px;
    height: 384px;
    border-radius: 50%;
    filter: blur(80px);
}

.cta-orb-1 {
    top: 0;
    left: 25%;
    background: #06b6d4;
}

.cta-orb-2 {
    bottom: 0;
    right: 25%;
    background: #a855f7;
}

.cta-content {
    max-width: 56rem;
    margin: 0 auto;
    text-align: center;
    position: relative;
    z-index: 10;
}

.cta-content h2 {
    font-size: 2.5rem;
    font-weight: bold;
    color: white;
    margin-bottom: 2rem;
}

.cta-content > p {
    font-size: 1.25rem;
    color: #67e8f9;
    line-height: 1.75;
    margin-bottom: 3rem;
}

.contact-cards {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 1.5rem;
    max-width: 40rem;
    margin: 3rem auto 0;
}

.contact-card {
    background: rgba(255, 255, 255, 0.1);
    backdrop-filter: blur(8px);
    border: 1px solid rgba(255, 255, 255, 0.2);
    border-radius: 1rem;
    padding: 1.5rem;
    transition: all 0.3s ease;
}

.contact-card:hover {
    background: rgba(255, 255, 255, 0.15);
}

.contact-icon-wrapper {
    width: 40px;
    height: 40px;
    border-radius: 0.5rem;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 0.75rem;
}

.contact-card:first-child .contact-icon-wrapper {
    background: rgba(6, 182, 212, 0.2);
}

.contact-card:first-child .icon {
    color: #67e8f9;
}

.contact-card:last-child .contact-icon-wrapper {
    background: rgba(168, 85, 247, 0.2);
}

.contact-card:last-child .icon {
    color: #c084fc;
}

.contact-card h3 {
    font-weight: 600;
    color: white;
    margin-bottom: 0.5rem;
}

.contact-card p {
    color: #67e8f9;
}

.contact-card:last-child p {
    color: #c084fc;
}

/* Footer */
.footer {
    background: #111827;
    color: #d1d5db;
    padding: 3rem 0;
}

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

.footer-logo {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    margin-bottom: 1rem;
}

.footer-logo-icon {
    width: 40px;
    height: 40px;
    background: linear-gradient(to bottom right, #06b6d4, #9333ea);
    border-radius: 0.75rem;
    display: flex;
    align-items: center;
    justify-content: center;
}

.footer-logo-icon svg {
    color: white;
}

.footer-logo span {
    font-size: 1.5rem;
    font-weight: bold;
    color: white;
}

.footer-col p {
    color: #9ca3af;
    line-height: 1.75;
}

.footer-col h4 {
    font-weight: 600;
    color: white;
    margin-bottom: 1rem;
}

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

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

.footer-col a {
    color: #d1d5db;
    text-decoration: none;
    transition: color 0.3s ease;
}

.footer-col a:hover {
    color: #67e8f9;
}

.footer-bottom {
    border-top: 1px solid #374151;
    padding-top: 2rem;
    text-align: center;
    color: #6b7280;
}

/* Responsive */
@media (max-width: 1024px) {
    .hero-content,
    .path-grid {
        grid-template-columns: 1fr;
    }
    
    .gradient-text {
        font-size: 3rem;
    }
    
    .hero-text h2 {
        font-size: 2rem;
    }
    
    .section-header h2 {
        font-size: 2rem;
    }
    
    .cta-content h2 {
        font-size: 2rem;
    }
}

@media (max-width: 768px) {
    .features-grid,
    .objectives-grid {
        grid-template-columns: 1fr;
    }
    
    .gradient-text {
        font-size: 2.5rem;
    }
    
    .hero-text h2 {
        font-size: 1.5rem;
    }
    
    .cta-buttons {
        flex-direction: column;
    }
    
    .btn-primary,
    .btn-secondary {
        width: 100%;
        justify-content: center;
    }
    
    .path-grid {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 640px) {
    .footer-grid {
        grid-template-columns: 1fr;
    }
    
    .contact-cards {
        grid-template-columns: 1fr;
    }
    
    .section-header h2 {
        font-size: 1.75rem;
    }
}