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

:root {
    --dark-bg: #1a1d23;
    --dark-secondary: #23272f;
    --dark-tertiary: #2d323b;
    --accent-primary: #3b82f6;
    --text-primary: #ffffff;
    --text-secondary: #d1d5db;
    --text-muted: #9ca3af;
    --border-color: #374151;
    --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.2);
    --shadow-md: 0 2px 8px rgba(0, 0, 0, 0.3);
}

html {
    scroll-behavior: smooth;
}

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

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 24px;
}

/* Header */
.header {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
    background: var(--dark-bg);
    border-bottom: 1px solid var(--border-color);
    transition: all 0.3s ease;
}

.header.scrolled {
    box-shadow: var(--shadow-md);
}

.header .container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 18px 24px;
}

.logo {
    display: flex;
    align-items: center;
    gap: 12px;
    font-family: 'Space Mono', monospace;
    font-weight: 700;
    font-size: 22px;
    transition: all 0.3s ease;
}

.logo:hover {
    transform: translateY(-1px);
}

.logo img {
    height: 104px;
}

.nav {
    display: flex;
    gap: 32px;
}

.nav a {
    color: var(--text-secondary);
    text-decoration: none;
    font-weight: 500;
    transition: all 0.3s ease;
    position: relative;
    padding: 8px 12px;
    border-radius: 8px;
}

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

.menu-toggle {
    display: none;
    flex-direction: column;
    gap: 4px;
    background: transparent;
    border: none;
    cursor: pointer;
    padding: 8px;
}

.menu-toggle span {
    width: 24px;
    height: 2px;
    background: var(--text-primary);
    transition: all 0.3s ease;
}

/* Hero Section */
.hero {
    min-height: 85vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding-top: 120px;
    padding-bottom: 80px;
    background: 
        radial-gradient(ellipse at top, rgba(59, 130, 246, 0.03) 0%, transparent 50%),
        linear-gradient(180deg, #1a1d23 0%, #151820 100%);
    position: relative;
}

.hero::before {
    content: '';
    position: absolute;
    inset: 0;
    background-image: 
        repeating-linear-gradient(0deg, transparent, transparent 2px, rgba(255,255,255,0.01) 2px, rgba(255,255,255,0.01) 4px);
    pointer-events: none;
    opacity: 0.3;
}

.hero-content {
    text-align: left;
    max-width: 900px;
    margin: 0 auto;
    position: relative;
    padding-left: 32px;
}

.hero-accent-line {
    position: absolute;
    left: 0;
    top: 0;
    width: 3px;
    height: 140px;
    background: linear-gradient(180deg, var(--accent-primary) 0%, transparent 100%);
    border-radius: 2px;
}

.hero-title {
    font-family: 'Space Mono', monospace;
    font-size: clamp(36px, 5.5vw, 62px);
    font-weight: 700;
    line-height: 1.15;
    margin-bottom: 28px;
    color: var(--text-primary);
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.hero-title-line {
    display: block;
    font-weight: 400;
}

.hero-title-emphasis {
    font-weight: 700;
    background: linear-gradient(135deg, #ffffff 0%, #d1d5db 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero-subtitle {
    font-size: clamp(17px, 2vw, 21px);
    color: var(--text-secondary);
    margin-bottom: 48px;
    line-height: 1.65;
    font-weight: 300;
    max-width: 680px;
}

.hero-cta {
    display: flex;
    gap: 16px;
    align-items: center;
}

.cta-button {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 16px 32px;
    text-decoration: none;
    font-weight: 600;
    font-size: 16px;
    border-radius: 8px;
    transition: all 0.3s ease;
    position: relative;
}

.cta-primary {
    background: var(--accent-primary);
    color: white;
    box-shadow: 0 0 24px rgba(59, 130, 246, 0.25);
}

.cta-primary:hover {
    background: #2563eb;
    transform: translateY(-2px);
    box-shadow: 0 0 32px rgba(59, 130, 246, 0.4), var(--shadow-md);
}

.cta-secondary {
    background: transparent;
    color: var(--text-primary);
    border: 1.5px solid var(--border-color);
}

.cta-secondary:hover {
    border-color: var(--accent-primary);
    color: var(--accent-primary);
    transform: translateY(-2px);
}

/* Presentation Section */
.presentation {
    padding: 100px 0;
    background: var(--dark-secondary);
    border-top: 1px solid var(--border-color);
}

.presentation-content {
    max-width: 900px;
    margin: 0 auto;
}

.section-title {
    font-family: 'Space Mono', monospace;
    font-size: clamp(28px, 4vw, 42px);
    font-weight: 700;
    margin-bottom: 24px;
    line-height: 1.3;
}

.section-title.centered {
    text-align: center;
}

.presentation-text p {
    color: var(--text-secondary);
    margin-bottom: 20px;
    font-size: 16px;
}

.presentation-features {
    margin-top: 48px;
    display: flex;
    flex-direction: column;
    gap: 32px;
}

.feature-item {
    display: flex;
    gap: 20px;
    align-items: flex-start;
}

.feature-icon {
    min-width: 48px;
    height: 48px;
    background: var(--dark-tertiary);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--accent-primary);
}

.feature-item h3 {
    font-size: 18px;
    font-weight: 600;
    margin-bottom: 8px;
    color: var(--text-primary);
}

.feature-item p {
    color: var(--text-muted);
    font-size: 14px;
    margin: 0;
}



/* Services Section */
.services {
    padding: 100px 0;
    background: var(--dark-bg);
    border-top: 1px solid var(--border-color);
}

.section-subtitle {
    text-align: center;
    color: var(--text-secondary);
    font-size: 18px;
    margin-bottom: 64px;
}

.services-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 32px;
}

.service-card {
    background: var(--dark-secondary);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    padding: 32px;
    transition: all 0.3s ease;
    position: relative;
}

.service-card:hover {
    transform: translateY(-4px);
    border-color: var(--accent-primary);
    box-shadow: var(--shadow-md);
}

.service-card.featured {
    border-color: var(--accent-primary);
}

.featured-badge {
    position: absolute;
    top: 16px;
    right: 16px;
    background: var(--accent-primary);
    color: white;
    padding: 6px 14px;
    border-radius: 4px;
    font-size: 12px;
    font-weight: 600;
}

.service-icon {
    width: 64px;
    height: 64px;
    background: var(--dark-tertiary);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 24px;
    color: var(--accent-primary);
}

.service-card h3 {
    font-size: 22px;
    font-weight: 700;
    margin-bottom: 16px;
    color: var(--text-primary);
}

.service-card > p {
    color: var(--text-secondary);
    margin-bottom: 24px;
    font-size: 15px;
    line-height: 1.6;
}

.service-features {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.service-features li {
    color: var(--text-muted);
    font-size: 14px;
    padding-left: 24px;
    position: relative;
}

.service-features li::before {
    content: '✓';
    position: absolute;
    left: 0;
    color: var(--accent-primary);
    font-weight: 700;
}

/* Méthode Section */
.methode {
    padding: 100px 0;
    background: var(--dark-secondary);
    border-top: 1px solid var(--border-color);
}

.methode-timeline {
    display: grid;
    gap: 48px;
    max-width: 900px;
    margin: 0 auto;
}

.timeline-item {
    display: grid;
    grid-template-columns: 80px 1fr 80px;
    gap: 32px;
    align-items: center;
    position: relative;
}

.timeline-item:not(:last-child)::after {
    content: '';
    position: absolute;
    left: 40px;
    top: 100%;
    width: 2px;
    height: 48px;
    background: var(--border-color);
}

.timeline-number {
    font-family: 'Space Mono', monospace;
    font-size: 32px;
    font-weight: 700;
    color: var(--accent-primary);
    text-align: center;
}

.timeline-content {
    background: var(--dark-bg);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    padding: 32px;
    transition: all 0.3s ease;
}

.timeline-content:hover {
    border-color: var(--accent-primary);
}

.timeline-content h3 {
    font-size: 22px;
    font-weight: 700;
    margin-bottom: 12px;
    color: var(--text-primary);
}

.timeline-content p {
    color: var(--text-secondary);
    font-size: 15px;
    line-height: 1.6;
    margin: 0;
}

.timeline-icon {
    width: 64px;
    height: 64px;
    background: var(--dark-tertiary);
    border: 2px solid var(--border-color);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--accent-primary);
}

/* Contact Section */
.contact {
    padding: 100px 0;
    background: var(--dark-bg);
    border-top: 1px solid var(--border-color);
}

.contact-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 80px;
}

.contact-info {
    display: flex;
    flex-direction: column;
    gap: 32px;
}

.contact-info p {
    color: var(--text-secondary);
    font-size: 16px;
    line-height: 1.6;
}

.contact-methods {
    display: flex;
    flex-direction: column;
    gap: 24px;
}

.contact-method {
    display: flex;
    gap: 20px;
    align-items: center;
    padding: 24px;
    background: var(--dark-secondary);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    transition: all 0.3s ease;
    text-decoration: none;
    color: inherit;
}

.contact-method:hover {
    border-color: var(--accent-primary);
}

.method-icon {
    min-width: 48px;
    height: 48px;
    background: var(--dark-tertiary);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--accent-primary);
}

.method-label {
    font-size: 12px;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.5px;
    margin-bottom: 4px;
}

.method-value {
    font-size: 18px;
    font-weight: 600;
    color: var(--text-primary);
}

.contact-form-wrapper {
    background: var(--dark-secondary);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    padding: 40px;
}

.contact-form {
    display: flex;
    flex-direction: column;
    gap: 24px;
}

.form-group {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.form-group label {
    font-weight: 600;
    color: var(--text-primary);
    font-size: 14px;
}

.form-group input,
.form-group textarea {
    background: var(--dark-bg);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    padding: 14px 16px;
    color: var(--text-primary);
    font-family: 'Noto Sans', sans-serif;
    font-size: 15px;
    transition: all 0.3s ease;
}

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

.form-group textarea {
    resize: vertical;
    min-height: 120px;
}

.form-group-checkbox {
    display: flex;
    align-items: flex-start;
    gap: 12px;
}

.form-group-checkbox input[type="checkbox"] {
    margin-top: 4px;
    width: 18px;
    height: 18px;
    cursor: pointer;
    accent-color: var(--accent-primary);
}

.form-group-checkbox label {
    color: var(--text-secondary);
    font-size: 14px;
    line-height: 1.6;
    cursor: pointer;
}

.form-group-checkbox label a {
    color: var(--accent-primary);
    text-decoration: none;
}

.form-group-checkbox label a:hover {
    text-decoration: underline;
}

.submit-button {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 12px;
    padding: 16px 32px;
    background: var(--accent-primary);
    color: white;
    border: none;
    border-radius: 8px;
    font-weight: 600;
    font-size: 16px;
    cursor: pointer;
    transition: all 0.3s ease;
}

.submit-button:hover {
    background: #2563eb;
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

/* Footer */
.footer {
    background: var(--dark-bg);
    border-top: 1px solid var(--border-color);
    padding: 60px 0 32px;
}

.footer-main {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 48px;
    margin-bottom: 48px;
    padding-bottom: 48px;
    border-bottom: 1px solid var(--border-color);
}

.footer-column {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.footer-brand {
    margin-bottom: 8px;
}

.footer-logo {
    height: 70px;
}

.footer-heading {
    font-family: 'Space Mono', monospace;
    font-size: 14px;
    font-weight: 700;
    color: var(--text-primary);
    text-transform: uppercase;
    letter-spacing: 0.5px;
    margin-bottom: 4px;
}

.footer-list {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.footer-list li {
    color: var(--text-secondary);
    font-size: 15px;
    line-height: 1.6;
}

.footer-list a {
    color: var(--text-secondary);
    text-decoration: none;
    transition: color 0.3s ease;
}

.footer-list a:hover {
    color: var(--accent-primary);
}

.footer-bottom {
    text-align: center;
    padding-top: 32px;
}

.footer-bottom p {
    color: var(--text-muted);
    font-size: 14px;
}

/* Animations */


/* Responsive */
@media (max-width: 768px) {
    .container {
        padding: 0 20px;
    }

    .header .container {
        padding: 12px 20px;
    }

    .logo img {
        height: 40px;
    }

    .nav {
        display: none;
    }

    .menu-toggle {
        display: flex;
    }

    .mobile-menu {
        display: none;
        position: fixed;
        top: 64px;
        left: 0;
        right: 0;
        background: var(--dark-bg);
        border-bottom: 1px solid var(--border-color);
        padding: 16px 0;
        z-index: 999;
    }

    .mobile-menu.active {
        display: flex;
        flex-direction: column;
    }

    .mobile-menu a {
        padding: 16px 24px;
        color: var(--text-secondary);
        text-decoration: none;
        font-weight: 500;
        transition: all 0.3s ease;
        border-left: 3px solid transparent;
    }

    .mobile-menu a:hover {
        color: var(--accent-primary);
        background: var(--dark-secondary);
        border-left-color: var(--accent-primary);
    }

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

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

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

    .hero {
        min-height: 70vh;
        padding-top: 80px;
    }

    .hero-content {
        padding-left: 24px;
        text-align: left;
    }

    .hero-accent-line {
        height: 100px;
    }

    .hero-title {
        font-size: 28px;
    }

    .hero-cta {
        flex-direction: column;
        align-items: stretch;
    }

    .cta-button {
        width: 100%;
        text-align: center;
    }

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

    .timeline-item {
        grid-template-columns: 60px 1fr;
        gap: 20px;
    }

    .timeline-icon {
        display: none;
    }

    .timeline-number {
        font-size: 24px;
    }

    .contact-grid {
        grid-template-columns: 1fr;
        gap: 48px;
    }

    .contact-form-wrapper {
        padding: 32px 24px;
    }

    .footer-main {
        grid-template-columns: 1fr;
        gap: 40px;
    }

    .footer-column {
        text-align: left;
        align-items: flex-start;
    }
}

@media (max-width: 480px) {
    .hero-title {
        font-size: 24px;
    }

    .section-title {
        font-size: 24px;
    }

    .timeline-content {
        padding: 24px;
    }
}