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

:root {
    --primary: #2563eb;
    --secondary: #1e40af;
    --dark: #1e293b;
    --light: #f1f5f9;
    --accent: #3b82f6;
}

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

/* Header & Navigation */
header {
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    color: white;
    padding: 1rem 0;
    position: fixed;
    width: 100%;
    top: 0;
    z-index: 1000;
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
    transition: all 0.3s ease;
}

header.scrolled {
    padding: 0.5rem 0;
    background: rgba(37, 99, 235, 0.95);
    backdrop-filter: blur(10px);
}

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

.logo {
    font-size: 1.5rem;
    font-weight: bold;
    letter-spacing: 1px;
}

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

nav a {
    color: white;
    text-decoration: none;
    transition: all 0.3s ease;
    position: relative;
}

nav a::after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 0;
    width: 0;
    height: 2px;
    background: white;
    transition: width 0.3s ease;
}

nav a:hover::after {
    width: 100%;
}

.menu-toggle {
    display: none;
    background: none;
    border: none;
    color: white;
    font-size: 1.5rem;
    cursor: pointer;
}

/* Hero Section */
.hero {
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    color: var(--dark);
    padding: 150px 2rem 100px;
    text-align: 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 1200 120"><path fill="%23ffffff" fill-opacity="0.1" d="M0,64L48,69.3C96,75,192,85,288,80C384,75,480,53,576,48C672,43,768,53,864,58.7C960,64,1056,64,1152,58.7L1200,53.3L1200,120L1152,120C1056,120,960,120,864,120C768,120,672,120,576,120C480,120,384,120,288,120C192,120,96,120,48,120L0,120Z"></path></svg>') bottom;
    background-size: cover;
    opacity: 0.5;
}

.hero-content {
    position: relative;
    z-index: 1;
    max-width: 800px;
    margin: 0 auto;
    background: rgba(255, 255, 255, 0.95);
    padding: 3rem;
    border-radius: 20px;
    box-shadow: 0 10px 40px rgba(0,0,0,0.2);
}

.hero h1 {
    font-size: 3rem;
    margin-bottom: 1rem;
    animation: fadeInUp 1s ease;
    color: var(--dark);
}

.typed-text {
    font-size: 1.5rem;
    margin-bottom: 2rem;
    min-height: 40px;
    color: var(--primary);
    font-weight: 600;
}

.hero p {
    font-size: 1.2rem;
    margin-bottom: 2rem;
    animation: fadeInUp 1s ease 0.3s backwards;
    color: var(--dark);
}

.btn {
    display: inline-block;
    padding: 12px 30px;
    background: white;
    color: var(--primary);
    text-decoration: none;
    border-radius: 50px;
    font-weight: bold;
    transition: all 0.3s ease;
    animation: fadeInUp 1s ease 0.6s backwards;
}

.btn:hover {
    transform: translateY(-3px);
    box-shadow: 0 10px 20px rgba(0,0,0,0.2);
}

/* Sections */
section {
    padding: 80px 2rem;
    max-width: 1200px;
    margin: 0 auto;
    opacity: 0;
    transform: translateY(50px);
    transition: all 0.8s ease;
}

section.visible {
    opacity: 1;
    transform: translateY(0);
}

section:nth-child(even) {
    background: var(--light);
}

h2 {
    font-size: 2.5rem;
    margin-bottom: 3rem;
    text-align: center;
    color: var(--primary);
    position: relative;
}

h2::after {
    content: '';
    position: absolute;
    bottom: -10px;
    left: 50%;
    transform: translateX(-50%);
    width: 100px;
    height: 4px;
    background: var(--accent);
    border-radius: 2px;
}

/* Timeline */
.timeline {
    position: relative;
    padding-left: 50px;
}

.timeline::before {
    content: '';
    position: absolute;
    left: 20px;
    top: 0;
    bottom: 0;
    width: 3px;
    background: var(--accent);
}

.timeline-item {
    position: relative;
    margin-bottom: 50px;
    padding-left: 30px;
}

.timeline-item::before {
    content: '';
    position: absolute;
    left: -38px;
    top: 0;
    width: 20px;
    height: 20px;
    border-radius: 50%;
    background: var(--accent);
    border: 4px solid white;
    box-shadow: 0 0 0 4px var(--light);
}

.timeline-content {
    background: white;
    padding: 20px;
    border-radius: 10px;
    box-shadow: 0 5px 15px rgba(0,0,0,0.1);
    transition: all 0.3s ease;
}

.timeline-content:hover {
    transform: translateX(10px);
    box-shadow: 0 8px 25px rgba(0,0,0,0.15);
}

.timeline-content ul {
    margin-left: 1.5rem;
    margin-top: 0.5rem;
}

/* Compétences Grid */
.competences-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
}

.competence-card {
    background: white;
    padding: 2rem;
    border-radius: 10px;
    box-shadow: 0 5px 15px rgba(0,0,0,0.1);
    transition: all 0.3s ease;
}

.competence-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 15px 30px rgba(0,0,0,0.2);
}

.competence-card h3 {
    color: var(--primary);
    margin-bottom: 1rem;
}

.skill-bar {
    background: var(--light);
    border-radius: 10px;
    height: 20px;
    margin-top: 10px;
    overflow: hidden;
}

.skill-progress {
    height: 100%;
    background: linear-gradient(90deg, var(--primary), var(--accent));
    border-radius: 10px;
    transition: width 1s ease;
    width: 0;
}

/* Projets Grid */
.projets-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
}

.projet-card {
    background: white;
    border-radius: 10px;
    overflow: hidden;
    box-shadow: 0 5px 15px rgba(0,0,0,0.1);
    transition: all 0.3s ease;
    cursor: pointer;
}

.projet-card:hover {
    transform: scale(1.05);
    box-shadow: 0 15px 30px rgba(0,0,0,0.2);
}

.projet-image {
    width: 100%;
    height: 200px;
    background: linear-gradient(135deg, var(--primary), var(--accent));
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    font-size: 3rem;
}

.projet-content {
    padding: 1.5rem;
}

.projet-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
    margin-top: 1rem;
}

.tag {
    background: var(--light);
    padding: 5px 15px;
    border-radius: 20px;
    font-size: 0.9rem;
    color: var(--primary);
}

/* Modal */
.modal {
    display: none;
    position: fixed;
    z-index: 2000;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    background: rgba(0,0,0,0.8);
    animation: fadeIn 0.3s ease;
}

.modal-content {
    background: white;
    margin: 5% auto;
    padding: 2rem;
    border-radius: 15px;
    max-width: 600px;
    position: relative;
    animation: slideDown 0.3s ease;
}

.modal-content ul {
    margin-left: 1.5rem;
    margin-top: 0.5rem;
}

.close {
    position: absolute;
    right: 20px;
    top: 10px;
    font-size: 2rem;
    cursor: pointer;
    color: var(--dark);
}

/* Alternance Section */
.alternance-container {
    max-width: 1000px;
    margin: 0 auto;
}

.alternance-header {
    background: linear-gradient(135deg, var(--primary), var(--accent));
    color: white;
    padding: 2rem;
    border-radius: 15px;
    display: flex;
    align-items: center;
    gap: 2rem;
    margin-bottom: 3rem;
    box-shadow: 0 10px 30px rgba(37, 99, 235, 0.3);
}

.entreprise-logo {
    font-size: 4rem;
    background: white;
    width: 100px;
    height: 100px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 15px;
    box-shadow: 0 5px 15px rgba(0,0,0,0.2);
}

.entreprise-info h3 {
    font-size: 2rem;
    margin-bottom: 0.5rem;
}

.poste {
    font-size: 1.2rem;
    margin-bottom: 0.5rem;
    opacity: 0.9;
}

.periode {
    font-size: 1rem;
    opacity: 0.8;
}

.alternance-grid {
    display: grid;
    gap: 2rem;
    margin-bottom: 3rem;
}

.alternance-card {
    background: white;
    padding: 2rem;
    border-radius: 15px;
    box-shadow: 0 5px 20px rgba(0,0,0,0.1);
    transition: all 0.3s ease;
}

.alternance-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 30px rgba(0,0,0,0.15);
}

.alternance-card h4 {
    color: var(--primary);
    font-size: 1.5rem;
    margin-bottom: 1.5rem;
    padding-bottom: 0.5rem;
    border-bottom: 3px solid var(--accent);
}

.alternance-card ul {
    list-style: none;
    padding: 0;
}

.alternance-card ul li {
    padding: 0.5rem 0;
    padding-left: 1.5rem;
    position: relative;
}

.alternance-card ul li::before {
    content: '✓';
    position: absolute;
    left: 0;
    color: var(--accent);
    font-weight: bold;
}

.tech-badges {
    display: flex;
    flex-wrap: wrap;
    gap: 0.75rem;
}

.tech-badge {
    background: linear-gradient(135deg, var(--primary), var(--accent));
    color: white;
    padding: 8px 16px;
    border-radius: 20px;
    font-size: 0.9rem;
    font-weight: 500;
    transition: all 0.3s ease;
}

.tech-badge:hover {
    transform: translateY(-3px);
    box-shadow: 0 5px 15px rgba(37, 99, 235, 0.3);
}

.projet-alternance {
    background: var(--light);
    padding: 1rem;
    border-radius: 10px;
    margin-bottom: 1rem;
    border-left: 4px solid var(--accent);
}

.projet-alternance h5 {
    color: var(--primary);
    margin-bottom: 0.5rem;
}

.projet-alternance p {
    font-size: 0.95rem;
    color: #666;
}

.competences-alternance {
    display: grid;
    gap: 1rem;
}

.comp-item {
    display: flex;
    gap: 1rem;
    align-items: start;
    padding: 1rem;
    background: var(--light);
    border-radius: 10px;
    transition: all 0.3s ease;
}

.comp-item:hover {
    background: var(--primary);
    color: white;
    transform: translateX(5px);
}

.comp-icon {
    font-size: 2rem;
    flex-shrink: 0;
}

.comp-item strong {
    display: block;
    margin-bottom: 0.25rem;
}

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

.alternance-stats {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
    gap: 2rem;
    margin-bottom: 3rem;
}

.stat-item {
    text-align: center;
    padding: 2rem;
    background: white;
    border-radius: 15px;
    box-shadow: 0 5px 20px rgba(0,0,0,0.1);
    transition: all 0.3s ease;
}

.stat-item:hover {
    transform: translateY(-10px);
    box-shadow: 0 15px 40px rgba(0,0,0,0.2);
    background: linear-gradient(135deg, var(--primary), var(--accent));
    color: white;
}

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

.stat-item:hover .stat-number {
    color: white;
}

.stat-label {
    font-size: 1rem;
    color: #666;
}

.stat-item:hover .stat-label {
    color: white;
}

.alternance-competences-blocs {
    background: var(--light);
    padding: 2rem;
    border-radius: 15px;
    margin-top: 2rem;
}

.blocs-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 1.5rem;
}

.bloc-card {
    background: white;
    padding: 1.5rem;
    border-radius: 10px;
    text-align: center;
    box-shadow: 0 5px 15px rgba(0,0,0,0.1);
    transition: all 0.3s ease;
    border-top: 4px solid var(--accent);
}

.bloc-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 25px rgba(0,0,0,0.15);
}

.bloc-card h5 {
    color: var(--primary);
    font-size: 1.3rem;
    margin-bottom: 0.5rem;
}

.bloc-card p {
    font-size: 0.9rem;
    color: #666;
    margin-bottom: 1rem;
}

.bloc-badge {
    display: inline-block;
    background: linear-gradient(135deg, var(--primary), var(--accent));
    color: white;
    padding: 8px 16px;
    border-radius: 20px;
    font-size: 0.85rem;
    font-weight: 500;
}

/* Contact */
.contact-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 2rem;
    text-align: center;
}

.contact-item {
    padding: 2rem;
    background: white;
    border-radius: 10px;
    box-shadow: 0 5px 15px rgba(0,0,0,0.1);
    transition: all 0.3s ease;
}

.contact-item:hover {
    transform: translateY(-5px);
    background: var(--primary);
    color: white;
}

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

/* Footer */
footer {
    background: var(--dark);
    color: white;
    text-align: center;
    padding: 2rem;
}

/* Animations */
@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

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

@keyframes slideDown {
    from {
        opacity: 0;
        transform: translateY(-50px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* Responsive */
@media (max-width: 768px) {
    .menu-toggle {
        display: block;
    }

    nav ul {
        position: fixed;
        left: -100%;
        top: 70px;
        flex-direction: column;
        background: var(--primary);
        width: 100%;
        padding: 2rem;
        transition: left 0.3s ease;
    }

    nav ul.active {
        left: 0;
    }

    .hero h1 {
        font-size: 2rem;
    }

    .typed-text {
        font-size: 1.2rem;
    }

    .timeline {
        padding-left: 30px;
    }

    .timeline::before {
        left: 10px;
    }

    .timeline-item::before {
        left: -28px;
    }

    .alternance-header {
        flex-direction: column;
        text-align: center;
    }

    .entreprise-info h3 {
        font-size: 1.5rem;
    }

    .alternance-stats {
        grid-template-columns: repeat(2, 1fr);
    }

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