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

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    line-height: 1.6;
    color: #333;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    min-height: 100vh;
}

header {
    background: rgba(255, 255, 255, 0.95);
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.1);
    position: sticky;
    top: 0;
    z-index: 1000;
    padding: 1rem 0;
}

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

nav h1 {
    color: #667eea;
    font-size: 1.8rem;
}

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

nav a {
    text-decoration: none;
    color: #333;
    font-weight: 500;
    transition: color 0.3s;
}

nav a:hover {
    color: #667eea;
}

main {
    max-width: 1200px;
    margin: 0 auto;
    padding: 3rem 2rem;
}

/* Section Présentation */
.presentation-section {
    background: linear-gradient(135deg, rgba(255, 255, 255, 0.95) 0%, rgba(255, 255, 255, 0.9) 100%);
    border-radius: 20px;
    padding: 4rem 3rem;
    margin-bottom: 3rem;
    box-shadow: 0 15px 40px rgba(0, 0, 0, 0.2);
    text-align: center;
    position: relative;
    overflow: hidden;
}

.presentation-section::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(135deg, rgba(102, 126, 234, 0.05) 0%, rgba(118, 75, 162, 0.05) 100%);
    z-index: 0;
}

.presentation-content {
    position: relative;
    z-index: 1;
}

.presentation-text h2 {
    color: #667eea;
    font-size: 3rem;
    margin-bottom: 1rem;
    font-weight: 700;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.presentation-subtitle {
    font-size: 1.5rem;
    color: #764ba2;
    margin-bottom: 1.5rem;
    font-weight: 500;
}

.presentation-description {
    font-size: 1.1rem;
    color: #555;
    line-height: 1.8;
    max-width: 800px;
    margin: 0 auto 2.5rem;
}

.presentation-description strong {
    color: #667eea;
    font-weight: 600;
}

.presentation-buttons {
    display: flex;
    gap: 1.5rem;
    justify-content: center;
    flex-wrap: wrap;
}

.btn-primary, .btn-secondary {
    padding: 1rem 2.5rem;
    border-radius: 50px;
    text-decoration: none;
    font-weight: 600;
    font-size: 1.1rem;
    transition: all 0.3s ease;
    display: inline-block;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.2);
}

.btn-primary {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
}

.btn-primary:hover {
    transform: translateY(-3px);
    box-shadow: 0 8px 25px rgba(102, 126, 234, 0.4);
}

.btn-secondary {
    background: white;
    color: #667eea;
    border: 2px solid #667eea;
}

.btn-secondary:hover {
    background: #667eea;
    color: white;
    transform: translateY(-3px);
    box-shadow: 0 8px 25px rgba(102, 126, 234, 0.4);
}

.section {
    background: white;
    border-radius: 15px;
    padding: 3rem;
    margin-bottom: 3rem;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.2);
}

.section h2 {
    color: #667eea;
    margin-bottom: 2rem;
    font-size: 2rem;
    text-align: center;
}

/* Carrousel SAE */
.carousel-container {
    position: relative;
    max-width: 100%;
    margin: 0 auto;
    padding: 0 3rem;
}

.carousel-wrapper {
    overflow: hidden;
    border-radius: 10px;
    width: 100%;
}

.carousel-track {
    display: flex;
    transition: transform 0.5s ease-in-out;
    gap: 1.5rem;
    will-change: transform;
}

.carousel-item {
    flex: 0 0 calc(33.333% - 1rem);
    min-width: calc(33.333% - 1rem);
    max-width: calc(33.333% - 1rem);
    background: #f8f9fa;
    border-radius: 10px;
    padding: 1.5rem;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.1);
    transition: transform 0.3s, box-shadow 0.3s;
}

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

.carousel-item img {
    width: 100%;
    height: 200px;
    object-fit: cover;
    border-radius: 8px;
    margin-bottom: 1rem;
}

.carousel-item h3 {
    color: #667eea;
    margin-bottom: 0.5rem;
    font-size: 1.3rem;
}

.carousel-item p {
    color: #666;
    line-height: 1.6;
}

.carousel-btn {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    background: rgba(102, 126, 234, 0.9);
    color: white;
    border: none;
    width: 50px;
    height: 50px;
    border-radius: 50%;
    font-size: 2rem;
    cursor: pointer;
    z-index: 10;
    transition: background 0.3s, transform 0.3s;
    display: flex;
    align-items: center;
    justify-content: center;
}

.carousel-btn:hover {
    background: rgba(102, 126, 234, 1);
    transform: translateY(-50%) scale(1.1);
}

.carousel-btn.prev {
    left: -25px;
}

.carousel-btn.next {
    right: -25px;
}

.carousel-indicators {
    display: flex;
    justify-content: center;
    gap: 0.5rem;
    margin-top: 2rem;
}

.indicator {
    width: 12px;
    height: 12px;
    border-radius: 50%;
    background: #ccc;
    cursor: pointer;
    transition: background 0.3s, transform 0.3s;
}

.indicator.active {
    background: #667eea;
    transform: scale(1.2);
}

/* Section Expériences */
.experiences-container {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
}

.experience-card {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    padding: 2rem;
    border-radius: 10px;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.2);
    transition: transform 0.3s, box-shadow 0.3s;
}

.experience-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.3);
}

.experience-card h3 {
    font-size: 1.5rem;
    margin-bottom: 0.5rem;
}

.experience-card .company {
    font-size: 1.1rem;
    opacity: 0.9;
    margin-bottom: 0.5rem;
}

.experience-card .period {
    font-size: 0.9rem;
    opacity: 0.8;
    margin-bottom: 1rem;
    font-style: italic;
}

.experience-card .description {
    line-height: 1.6;
    opacity: 0.95;
}

/* Section CV */
.cv-selector {
    display: flex;
    justify-content: center;
    gap: 1rem;
    margin-bottom: 2rem;
}

.cv-btn {
    padding: 0.8rem 2rem;
    border: 2px solid #667eea;
    background: white;
    color: #667eea;
    border-radius: 50px;
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
}

.cv-btn:hover {
    background: #f0f0f0;
    transform: translateY(-2px);
    box-shadow: 0 5px 15px rgba(102, 126, 234, 0.2);
}

.cv-btn.active {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    border-color: #667eea;
    box-shadow: 0 5px 15px rgba(102, 126, 234, 0.3);
}

.cv-content {
    position: relative;
    min-height: 600px;
}

.cv-pdf-container, .cv-video-container {
    display: none;
    width: 100%;
    height: 600px;
}

.cv-pdf-container.active, .cv-video-container.active {
    display: block;
}

.cv-video {
    width: 100%;
    height: 100%;
    border-radius: 10px;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.2);
    background: #000;
}

.cv-pdf {
    width: 100%;
    height: 100%;
    border: none;
    border-radius: 10px;
    box-shadow: 0 5px 15px rgba(0, 0, 0, 0.2);
}

/* Footer */
footer {
    background: rgba(255, 255, 255, 0.95);
    text-align: center;
    padding: 2rem;
    margin-top: 3rem;
    color: #666;
}

/* Responsive */
@media (max-width: 768px) {
    nav {
        flex-direction: column;
        gap: 1rem;
    }

    nav ul {
        flex-direction: column;
        gap: 1rem;
        text-align: center;
    }

    .section {
        padding: 2rem 1.5rem;
    }

    .carousel-item {
        flex: 0 0 calc(50% - 0.75rem);
        min-width: calc(50% - 0.75rem);
        max-width: calc(50% - 0.75rem);
    }
    
    .carousel-container {
        padding: 0 2rem;
    }

    .carousel-btn {
        width: 40px;
        height: 40px;
        font-size: 1.5rem;
    }

    .carousel-btn.prev {
        left: -20px;
    }

    .carousel-btn.next {
        right: -20px;
    }

    .cv-pdf-container, .cv-video-container {
        height: 400px;
    }

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

    .cv-btn {
        width: 100%;
        max-width: 300px;
    }

    .presentation-text h2 {
        font-size: 2rem;
    }

    .presentation-subtitle {
        font-size: 1.2rem;
    }

    .presentation-description {
        font-size: 1rem;
    }
}

@media (max-width: 480px) {
    .carousel-item {
        flex: 0 0 100%;
        min-width: 100%;
        max-width: 100%;
    }
    
    .carousel-container {
        padding: 0 1rem;
    }

    .experiences-container {
        grid-template-columns: 1fr;
    }

    .presentation-section {
        padding: 2rem 1.5rem;
    }

    .presentation-text h2 {
        font-size: 1.8rem;
    }

    .presentation-subtitle {
        font-size: 1.1rem;
    }

    .btn-primary, .btn-secondary {
        padding: 0.8rem 1.8rem;
        font-size: 1rem;
    }

    .cv-pdf-container, .cv-video-container {
        height: 300px;
    }
}