/* Variables CSS */
:root {
    --primary-color: #3b82f6;
    --secondary-color: #8b5cf6;
    --accent-color: #f59e0b;
    --dark-bg: #0f172a;
    --dark-secondary: #1e293b;
    --dark-tertiary: #334155;
    --text-primary: #ffffff;
    --text-secondary: #cbd5e1;
    --text-muted: #94a3b8;
    --glass-bg: rgba(255, 255, 255, 0.1);
    --glass-border: rgba(255, 255, 255, 0.2);
    --gradient-primary: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
    --gradient-accent: linear-gradient(135deg, var(--accent-color), #ef4444);
    --shadow-glow: 0 0 50px rgba(59, 130, 246, 0.3);
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

/* Reset et base */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    scroll-behavior: smooth;
}

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

/* Particules d'arrière-plan */
#particles {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: -1;
    pointer-events: none;
}

.particle {
    position: absolute;
    background: var(--gradient-primary);
    border-radius: 50%;
    opacity: 0.6;
    animation: float 6s ease-in-out infinite;
}

@keyframes float {
    0%, 100% { transform: translateY(0px) rotate(0deg); }
    50% { transform: translateY(-20px) rotate(180deg); }
}

/* Navigation */
.navbar {
    position: fixed;
    top: 0;
    width: 100%;
    padding: 1rem 0;
    background: rgba(15, 23, 42, 0.8);
    backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--glass-border);
    z-index: 1000;
    transition: var(--transition);
}

.navbar.scrolled {
    background: rgba(15, 23, 42, 0.95);
    padding: 0.5rem 0;
}

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

.nav-logo {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    cursor: pointer;
}

.logo-icon {
    position: relative;
    display: flex;
    align-items: center;
    justify-content: center;
}

.pulse-dot {
    position: absolute;
    top: -2px;
    right: -2px;
    width: 8px;
    height: 8px;
    background: var(--accent-color);
    border-radius: 50%;
    animation: pulse 2s infinite;
}

@keyframes pulse {
    0% { transform: scale(1); opacity: 1; }
    50% { transform: scale(1.2); opacity: 0.7; }
    100% { transform: scale(1); opacity: 1; }
}

.logo-text {
    font-size: 1.5rem;
    font-weight: 800;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.nav-menu {
    display: flex;
    align-items: center;
    gap: 2rem;
}

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

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

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

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

.cta-button {
    background: var(--gradient-primary);
    color: white;
    border: none;
    padding: 0.75rem 1.5rem;
    border-radius: 50px;
    font-weight: 600;
    cursor: pointer;
    transition: var(--transition);
    box-shadow: 0 4px 15px rgba(59, 130, 246, 0.3);
}

.cta-button:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(59, 130, 246, 0.4);
}

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

.hamburger span {
    width: 25px;
    height: 2px;
    background: var(--text-primary);
    transition: var(--transition);
}

/* Section Héros */
.hero-section {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    position: relative;
    padding: 2rem;
    background: radial-gradient(ellipse at center, rgba(59, 130, 246, 0.1) 0%, transparent 70%);
}

.hero-content {
    max-width: 800px;
    z-index: 2;
}

.hero-badge {
    display: inline-flex;
    align-items: center;
    background: var(--glass-bg);
    border: 1px solid var(--glass-border);
    padding: 0.5rem 1rem;
    border-radius: 50px;
    font-size: 0.9rem;
    margin-bottom: 2rem;
    backdrop-filter: blur(10px);
    animation: fadeInUp 1s ease-out;
}

.hero-title {
    font-size: clamp(3rem, 8vw, 6rem);
    font-weight: 800;
    margin-bottom: 1.5rem;
    position: relative;
    animation: fadeInUp 1s ease-out 0.2s both;
}

.gradient-text {
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    position: relative;
}

.sparkle {
    position: absolute;
    top: -10px;
    right: -10px;
    width: 20px;
    height: 20px;
    background: var(--accent-color);
    border-radius: 50%;
    animation: sparkle 2s ease-in-out infinite;
}

@keyframes sparkle {
    0%, 100% { transform: scale(1) rotate(0deg); opacity: 1; }
    50% { transform: scale(1.2) rotate(180deg); opacity: 0.8; }
}

.hero-subtitle {
    font-size: 1.5rem;
    font-weight: 300;
    color: var(--primary-color);
    margin-bottom: 1rem;
    animation: fadeInUp 1s ease-out 0.4s both;
}

.hero-description {
    font-size: 1.1rem;
    color: var(--text-secondary);
    margin-bottom: 3rem;
    line-height: 1.8;
    animation: fadeInUp 1s ease-out 0.6s both;
}

.hero-buttons {
    display: flex;
    flex-wrap: wrap;
    gap: 1rem;
    justify-content: center;
    animation: fadeInUp 1s ease-out 0.8s both;
}

.btn-primary, .btn-secondary {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    padding: 1rem 2rem;
    border-radius: 50px;
    font-weight: 600;
    text-decoration: none;
    border: none;
    cursor: pointer;
    transition: var(--transition);
    font-size: 1rem;
}

.btn-primary {
    background: var(--gradient-primary);
    color: white;
    box-shadow: 0 4px 20px rgba(59, 130, 246, 0.4);
}

.btn-primary:hover {
    transform: translateY(-3px);
    box-shadow: 0 8px 30px rgba(59, 130, 246, 0.6);
}

.btn-primary.large {
    padding: 1.25rem 2.5rem;
    font-size: 1.1rem;
}

.btn-secondary {
    background: transparent;
    color: var(--primary-color);
    border: 2px solid var(--primary-color);
}

.btn-secondary:hover {
    background: var(--primary-color);
    color: white;
    transform: translateY(-3px);
}

/* Éléments flottants */
.floating-elements {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
    z-index: 1;
}

.floating-element {
    position: absolute;
    border-radius: 50%;
    background: var(--gradient-primary);
    opacity: 0.1;
    animation: floatElement 8s ease-in-out infinite;
}

.element-1 {
    width: 80px;
    height: 80px;
    top: 20%;
    left: 10%;
    animation-delay: 0s;
}

.element-2 {
    width: 60px;
    height: 60px;
    top: 60%;
    right: 15%;
    animation-delay: 2s;
}

.element-3 {
    width: 40px;
    height: 40px;
    bottom: 30%;
    left: 20%;
    animation-delay: 4s;
}

@keyframes floatElement {
    0%, 100% { transform: translateY(0px) scale(1); }
    50% { transform: translateY(-30px) scale(1.1); }
}

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

.section-header {
    text-align: center;
    margin-bottom: 4rem;
}

.section-title {
    font-size: clamp(2.5rem, 5vw, 4rem);
    font-weight: 700;
    margin-bottom: 1rem;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.section-divider {
    width: 80px;
    height: 4px;
    background: var(--gradient-primary);
    margin: 0 auto 2rem;
    border-radius: 2px;
}

.section-description {
    font-size: 1.2rem;
    color: var(--text-secondary);
    max-width: 600px;
    margin: 0 auto;
}

/* Section Services */
.services-section {
    padding: 6rem 0;
    background: linear-gradient(135deg, var(--dark-bg) 0%, var(--dark-secondary) 100%);
}

/* Section Expertises */
.expertises-section {
    padding: 6rem 0;
    background: var(--dark-bg);
}

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

.expertise-card {
    position: relative;
    background: var(--glass-bg);
    border: 1px solid var(--glass-border);
    border-radius: 20px;
    padding: 2.5rem;
    backdrop-filter: blur(20px);
    transition: var(--transition);
    overflow: hidden;
    cursor: pointer;
}

.expertise-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 2px;
    background: var(--gradient-primary);
    transform: scaleX(0);
    transition: var(--transition);
}

.expertise-card:hover::before {
    transform: scaleX(1);
}

.expertise-card:hover {
    transform: translateY(-10px);
    border-color: var(--primary-color);
    box-shadow: 0 20px 40px rgba(59, 130, 246, 0.2);
}

.card-background {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: var(--gradient-primary);
    opacity: 0;
    transition: var(--transition);
}

.expertise-card:hover .card-background {
    opacity: 0.05;
}

.card-content {
    position: relative;
    z-index: 2;
}

.card-icon {
    width: 80px;
    height: 80px;
    background: var(--gradient-primary);
    border-radius: 16px;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 1.5rem;
    color: white;
    transition: var(--transition);
}

.expertise-card:hover .card-icon {
    transform: scale(1.1);
    box-shadow: var(--shadow-glow);
}

.card-title {
    font-size: 1.5rem;
    font-weight: 700;
    margin-bottom: 1rem;
    color: var(--text-primary);
}

.card-description {
    color: var(--text-secondary);
    line-height: 1.7;
    margin-bottom: 1.5rem;
}

.card-features {
    display: flex;
    gap: 0.5rem;
    flex-wrap: wrap;
}

.feature-tag {
    background: rgba(59, 130, 246, 0.1);
    color: var(--primary-color);
    padding: 0.25rem 0.75rem;
    border-radius: 20px;
    font-size: 0.8rem;
    font-weight: 500;
    border: 1px solid rgba(59, 130, 246, 0.2);
}

/* Section CTA */
.cta-section {
    padding: 6rem 0;
    background: linear-gradient(135deg, var(--dark-secondary) 0%, var(--dark-bg) 100%);
    position: relative;
}

.cta-section::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: radial-gradient(circle at center, rgba(59, 130, 246, 0.1) 0%, transparent 70%);
}

.cta-content {
    text-align: center;
    position: relative;
    z-index: 2;
}

.cta-title {
    font-size: clamp(2.5rem, 5vw, 3.5rem);
    font-weight: 700;
    margin-bottom: 1.5rem;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.cta-description {
    font-size: 1.2rem;
    color: var(--text-secondary);
    max-width: 600px;
    margin: 0 auto 3rem;
    line-height: 1.7;
}

.cta-buttons {
    display: flex;
    justify-content: center;
}

/* Footer */
.footer {
    background: var(--dark-bg);
    padding: 3rem 0;
    border-top: 1px solid var(--glass-border);
}

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

.footer-logo {
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.footer-text {
    color: var(--text-muted);
    text-align: center;
}

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

/* Responsive Design */
@media (max-width: 768px) {
    .nav-menu {
        position: fixed;
        top: 100%;
        left: 0;
        right: 0;
        background: rgba(15, 23, 42, 0.95);
        backdrop-filter: blur(20px);
        flex-direction: column;
        padding: 2rem;
        gap: 1.5rem;
        transform: translateY(-100%);
        opacity: 0;
        visibility: hidden;
        transition: var(--transition);
    }

    .nav-menu.active {
        transform: translateY(0);
        opacity: 1;
        visibility: visible;
    }

    .hamburger {
        display: flex;
    }

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

    .btn-primary, .btn-secondary {
        width: 100%;
        max-width: 280px;
        justify-content: center;
    }

    .expertises-grid {
        grid-template-columns: 1fr;
        gap: 1.5rem;
    }

    .expertise-card {
        padding: 2rem;
    }

    .nav-container {
        padding: 0 1rem;
    }

    .container {
        padding: 0 1rem;
    }
}

@media (max-width: 480px) {
    .hero-section {
        padding: 1rem;
    }

    .expertise-card {
        padding: 1.5rem;
    }

    .card-icon {
        width: 60px;
        height: 60px;
    }
}

/* Animations avancées */
.expertise-card {
    animation: cardFloat 6s ease-in-out infinite;
}

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

.expertise-card:nth-child(3) {
    animation-delay: 4s;
}

@keyframes cardFloat {
    0%, 100% { transform: translateY(0px); }
    50% { transform: translateY(-5px); }
}

/* Effets de survol supplémentaires */
.nav-link, .cta-button, .btn-primary, .btn-secondary, .expertise-card {
    position: relative;
    overflow: hidden;
}

.nav-link::before, .cta-button::before, .btn-primary::before, .btn-secondary::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 0;
    height: 0;
    background: rgba(255, 255, 255, 0.1);
    border-radius: 50%;
    transform: translate(-50%, -50%);
    transition: var(--transition);
}

.nav-link:hover::before, .cta-button:hover::before, .btn-primary:hover::before, .btn-secondary:hover::before {
    width: 300px;
    height: 300px;
}