:root {
    /* Couleurs Compétences - Code Couleur Strict */
    --color-realiser: #D32F2F;   /* Rouge */
    --color-optimiser: #F57C00;  /* Orange */
    --color-administrer: #FBC02D; /* Jaune */
    --color-gerer: #388E3C;      /* Vert */
    --color-conduire: #1976D2;   /* Bleu */
    --color-collaborer: #000000; /* Noir */

    /* Couleurs Générales */
    --bg-color: #ffffff;
    --text-color: #333333;
    --nav-bg: #ffffff;
    --nav-shadow: 0 2px 10px rgba(0,0,0,0.1);
    --primary-color: #333;
    --accent-color: #007bff;
    --light-bg: #f9f9f9;
}

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

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    line-height: 1.6;
    color: var(--text-color);
    padding-top: 80px; /* Pour la navbar fixe */
    scroll-behavior: smooth;
}

html {
    scroll-behavior: smooth;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

/* Navbar */
.navbar {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 80px;
    background: var(--nav-bg);
    box-shadow: var(--nav-shadow);
    z-index: 1000;
    display: flex;
    align-items: center;
}

.nav-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    width: 100%;
}

.logo {
    font-size: 1.5rem;
    font-weight: bold;
    text-decoration: none;
    color: var(--text-color);
}

.nav-links {
    display: flex;
    list-style: none;
    gap: 30px;
}

.nav-links a {
    text-decoration: none;
    color: var(--text-color);
    font-weight: 500;
    transition: color 0.3s;
}

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

/* Hero Section */
.hero-section {
    min-height: 80vh; /* Prend une bonne partie de l'écran */
    display: flex;
    align-items: center;
    justify-content: center;
    background-color: var(--bg-color);
}

.hero-container {
    display: flex;
    align-items: center;
    gap: 60px;
    flex-wrap: wrap; /* Pour le responsive */
}

.hero-image {
    flex: 0 0 auto;
}

.hero-image img {
    width: 300px;
    height: 300px;
    border-radius: 50%;
    object-fit: cover;
    box-shadow: 0 10px 25px rgba(0,0,0,0.15);
    border: 5px solid #fff;
}

.hero-content {
    flex: 1;
    min-width: 300px;
}

.hero-content h1 {
    font-size: 3.5rem;
    margin-bottom: 20px;
    line-height: 1.2;
}

.pitch {
    font-size: 1.25rem;
    margin-bottom: 30px;
    color: #555;
    max-width: 600px;
}

.hero-buttons {
    display: flex;
    align-items: center;
    gap: 20px;
}

.btn {
    display: inline-block;
    padding: 12px 30px;
    border-radius: 30px;
    text-decoration: none;
    font-weight: 600;
    transition: all 0.3s ease;
}

.btn-primary {
    background: var(--primary-color);
    color: #fff;
    box-shadow: 0 4px 10px rgba(0,0,0,0.2);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 15px rgba(0,0,0,0.25);
    background: #000;
}

.btn-secondary {
    background: transparent;
    color: var(--primary-color);
    border: 2px solid var(--primary-color);
    box-shadow: none;
}

.btn-secondary:hover {
    background: var(--primary-color);
    color: #fff;
    transform: translateY(-2px);
}

.social-links {
    display: flex;
    gap: 15px;
}

.social-links a {
    color: var(--text-color);
    font-size: 1.5rem;
    transition: color 0.3s;
}

.social-links a:hover {
    color: var(--accent-color);
}

/* Skills Section */
.skills-section {
    padding: 100px 0;
    background-color: #fff;
}

.section-title {
    text-align: center;
    font-size: 2.5rem;
    margin-bottom: 60px;
    position: relative;
    display: inline-block;
    left: 50%;
    transform: translateX(-50%);
}

.section-title::after {
    content: '';
    display: block;
    width: 60px;
    height: 4px;
    background: var(--accent-color);
    margin: 10px auto 0;
    border-radius: 2px;
}

.skills-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 30px;
}

.skill-card {
    padding: 40px 30px;
    border-radius: 15px;
    background: #fff;
    box-shadow: 0 10px 30px rgba(0,0,0,0.05);
    border-top: 6px solid transparent; /* Bordure colorée en haut */
    transition: transform 0.3s, box-shadow 0.3s;
    text-align: center;
    cursor: pointer;
}

.skill-card:hover {
    transform: translateY(-10px);
    box-shadow: 0 15px 35px rgba(0,0,0,0.1);
}

.skill-card h3 {
    margin-bottom: 15px;
    font-size: 1.5rem;
    font-weight: 700;
}

.skill-card p {
    color: #666;
    font-size: 0.95rem;
}

/* Specific Skill Colors */
.skill-card.realiser {
    border-color: var(--color-realiser);
}
.skill-card.realiser h3 {
    color: var(--color-realiser);
}

.skill-card.optimiser {
    border-color: var(--color-optimiser);
}
.skill-card.optimiser h3 {
    color: var(--color-optimiser);
}

.skill-card.administrer {
    border-color: var(--color-administrer);
}
.skill-card.administrer h3 {
    color: var(--color-administrer);
}

.skill-card.gerer {
    border-color: var(--color-gerer);
}
.skill-card.gerer h3 {
    color: var(--color-gerer);
}

.skill-card.conduire {
    border-color: var(--color-conduire);
}
.skill-card.conduire h3 {
    color: var(--color-conduire);
}

.skill-card.collaborer {
    border-color: var(--color-collaborer);
}
.skill-card.collaborer h3 {
    color: var(--color-collaborer);
}

/* Footer */
footer {
    background: #333;
    color: #fff;
    padding: 40px 0;
    text-align: center;
}

.footer-container {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 20px;
}

.footer-links a {
    color: #fff;
    text-decoration: none;
    margin: 0 10px;
    opacity: 0.8;
    transition: opacity 0.3s;
}

.footer-links a:hover {
    opacity: 1;
}

/* Projects Section */
.projects-section {
    padding: 80px 0;
    background: var(--light-bg);
}

/* Filters */
.filters-container {
    display: flex;
    justify-content: center;
    flex-wrap: wrap;
    gap: 15px;
    margin-bottom: 40px;
}

.filter-btn {
    padding: 10px 20px;
    border: 2px solid transparent;
    border-radius: 25px;
    background: #fff;
    cursor: pointer;
    font-weight: 600;
    transition: all 0.3s ease;
    color: #555;
    box-shadow: 0 2px 5px rgba(0,0,0,0.05);
}

.filter-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 8px rgba(0,0,0,0.1);
}

/* Filter Active States with Specific Colors */
.filter-btn[data-filter="realiser"].active, .filter-btn[data-filter="realiser"]:hover {
    background: var(--color-realiser);
    color: #fff;
    border-color: var(--color-realiser);
}
.filter-btn[data-filter="optimiser"].active, .filter-btn[data-filter="optimiser"]:hover {
    background: var(--color-optimiser);
    color: #fff;
    border-color: var(--color-optimiser);
}
.filter-btn[data-filter="administrer"].active, .filter-btn[data-filter="administrer"]:hover {
    background: var(--color-administrer);
    color: #fff;
    border-color: var(--color-administrer);
}
.filter-btn[data-filter="gerer"].active, .filter-btn[data-filter="gerer"]:hover {
    background: var(--color-gerer);
    color: #fff;
    border-color: var(--color-gerer);
}
.filter-btn[data-filter="conduire"].active, .filter-btn[data-filter="conduire"]:hover {
    background: var(--color-conduire);
    color: #fff;
    border-color: var(--color-conduire);
}
.filter-btn[data-filter="collaborer"].active, .filter-btn[data-filter="collaborer"]:hover {
    background: var(--color-collaborer);
    color: #fff;
    border-color: var(--color-collaborer);
}

/* Projects Grid */
.projects-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 30px;
}

.project-card {
    background: #fff;
    border-radius: 10px;
    overflow: hidden;
    box-shadow: 0 5px 15px rgba(0,0,0,0.05);
    transition: transform 0.3s, box-shadow 0.3s;
    cursor: pointer;
    display: flex;
    flex-direction: column;
}

.project-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 25px rgba(0,0,0,0.1);
}

.card-image {
    height: 200px;
    overflow: hidden;
}

.card-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: transform 0.5s;
}

.project-card:hover .card-image img {
    transform: scale(1.05);
}

.project-info {
    padding: 20px;
    flex: 1;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
}

.project-info h3 {
    margin-bottom: 15px;
    font-size: 1.2rem;
}

.project-badges {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
}

.badge {
    font-size: 0.75rem;
    padding: 4px 10px;
    border-radius: 12px;
    color: #fff;
    font-weight: 600;
}

.badge.realiser { background: var(--color-realiser); }
.badge.optimiser { background: var(--color-optimiser); }
.badge.administrer { background: var(--color-administrer); }
.badge.gerer { background: var(--color-gerer); }
.badge.conduire { background: var(--color-conduire); }
.badge.collaborer { background: var(--color-collaborer); }

/* Modal / Lightbox */
.modal {
    display: none; /* Hidden by default */
    position: fixed;
    z-index: 2000;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    overflow: auto;
    background-color: rgba(0,0,0,0.8); /* Black w/ opacity */
    backdrop-filter: blur(5px);
    align-items: center;
    justify-content: center;
}

.modal.show {
    display: flex;
    animation: fadeIn 0.3s;
}

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

.modal-content {
    background-color: #fefefe;
    margin: auto;
    padding: 0;
    border-radius: 10px;
    width: 90%;
    max-width: 800px;
    box-shadow: 0 4px 8px 0 rgba(0,0,0,0.2),0 6px 20px 0 rgba(0,0,0,0.19);
    position: relative;
    overflow: hidden;
    max-height: 85vh; /* Reduced height */
    display: flex;
    flex-direction: column;
}

.close-modal {
    color: #fff;
    position: absolute;
    top: 10px;
    right: 20px;
    font-size: 28px;
    font-weight: bold;
    z-index: 10;
    cursor: pointer;
    background: rgba(0, 0, 0, 0.5); /* Semi-transparent background */
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
    line-height: 1;
}

.close-modal:hover,
.close-modal:focus {
    color: #fff;
    background: rgba(200, 0, 0, 0.8);
    text-decoration: none;
    cursor: pointer;
}

/* Carousel */
.carousel-container {
    position: relative;
    width: 100%;
    height: 300px; /* Reduced specific height */
    background: #000;
    flex-shrink: 0;
}

.carousel-track-container {
    height: 100%;
    width: 100%;
    overflow: hidden;
}

.carousel-track {
    padding: 0;
    margin: 0;
    list-style: none;
    height: 100%;
    transition: transform 0.5s ease-in-out;
    display: flex;
}

.carousel-slide {
    min-width: 100%;
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
}

.carousel-slide img {
    max-width: 100%;
    max-height: 100%;
    object-fit: contain;
}

.carousel-btn {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    background: rgba(0, 0, 0, 0.5); /* Semi-transparent background */
    border: none;
    color: #fff;
    font-size: 1.5rem;
    cursor: pointer;
    padding: 10px 15px;
    z-index: 5;
    transition: background 0.3s;
    border-radius: 50%;
}

.carousel-btn:hover {
    background: rgba(0, 0, 0, 0.8);
    color: #fff;
}

.prev-btn { left: 10px; }
.next-btn { right: 10px; }

.carousel-nav {
    display: flex;
    justify-content: center;
    padding: 10px 0;
    position: absolute;
    bottom: 10px;
    width: 100%;
    z-index: 5;
}

.carousel-indicator {
    border: 0;
    border-radius: 50%;
    width: 10px;
    height: 10px;
    background: rgba(255,255,255,0.5);
    margin: 0 5px;
    cursor: pointer;
}

.carousel-indicator.current-slide {
    background: #fff;
}

/* Modal Details */
.modal-details {
    padding: 30px;
    overflow-y: auto;
}

.modal-details h3 {
    margin-bottom: 15px;
    font-size: 1.8rem;
}

.modal-details p {
    margin-bottom: 20px;
    color: #555;
    line-height: 1.7;
}

.modal-skills-container {
    margin-top: 20px;
    padding-top: 20px;
    border-top: 1px solid #eee;
}

.skill-link {
    display: inline-block;
    margin-right: 10px;
    margin-bottom: 10px;
    padding: 8px 15px;
    border-radius: 20px;
    text-decoration: none;
    color: #fff;
    font-weight: 600;
    font-size: 0.9rem;
    transition: opacity 0.3s;
}

.skill-link:hover {
    opacity: 0.9;
}

/* Skill Link Colors */
.skill-link.realiser { background: var(--color-realiser); }
.skill-link.optimiser { background: var(--color-optimiser); }
.skill-link.administrer { background: var(--color-administrer); }
.skill-link.gerer { background: var(--color-gerer); }
.skill-link.conduire { background: var(--color-conduire); }
.skill-link.collaborer { background: var(--color-collaborer); }

/* Responsive Modal */
@media (max-width: 768px) {
    .modal-content {
        width: 95%;
        max-height: 95vh;
    }
    
    .carousel-container {
        height: 250px;
    }
}

/* --- Contact Section --- */
.contact-section {
    background-color: #f9f9f9;
    padding-bottom: 80px;
}

.contact-wrapper {
    max-width: 800px;
    margin: 0 auto;
}

.contact-form {
    background: #fff;
    padding: 40px;
    border-radius: 15px;
    box-shadow: 0 10px 30px rgba(0,0,0,0.05);
}

.form-row {
    display: flex;
    gap: 20px;
    margin-bottom: 20px;
}

.form-row .form-group {
    flex: 1;
    margin-bottom: 0;
}

.form-group {
    margin-bottom: 25px;
}

.form-group label {
    display: block;
    margin-bottom: 8px;
    font-weight: 600;
    color: var(--text-color);
}

.form-group input,
.form-group textarea {
    width: 100%;
    padding: 12px 15px;
    border: 1px solid #ddd;
    border-radius: 8px;
    font-family: 'Poppins', sans-serif;
    font-size: 1rem;
    transition: border-color 0.3s, box-shadow 0.3s;
    background: #fafafa;
}

.form-group input:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.1); /* Utilise la couleur primaire avec opacité */
    background: #fff;
}

.block-btn {
    width: 100%;
    padding: 15px;
    font-size: 1.1rem;
    margin-top: 10px;
}

/* Contact Responsive */
@media (max-width: 768px) {
    .contact-form {
        padding: 25px;
    }

    .form-row {
        flex-direction: column;
        gap: 25px;
    }
}

/* --- Timeline / Experience Section --- */
.timeline-container {
    display: flex;
    justify-content: center;
    gap: 50px;
    flex-wrap: wrap;
    margin-top: 40px;
}

.timeline-column {
    flex: 1;
    min-width: 300px;
    max-width: 500px;
}

.column-title {
    font-size: 1.5rem;
    color: var(--primary-color);
    margin-bottom: 30px;
    text-align: center;
    border-bottom: 2px solid var(--accent-color);
    padding-bottom: 10px;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
}

.timeline-item {
    position: relative;
    padding-left: 30px;
    margin-bottom: 40px;
    border-left: 2px solid #e0e0e0;
}

.timeline-item::before {
    content: '';
    position: absolute;
    left: -8px;
    top: 0;
    width: 14px;
    height: 14px;
    border-radius: 50%;
    background: var(--accent-color);
    border: 2px solid #fff;
}

.timeline-date {
    font-size: 0.85rem;
    font-weight: 600;
    color: #999;
    margin-bottom: 5px;
    text-transform: uppercase;
    letter-spacing: 1px;
}

.timeline-content {
    background: #fff;
    padding: 20px;
    border-radius: 8px;
    box-shadow: 0 4px 10px rgba(0,0,0,0.05);
    transition: transform 0.3s;
}

.timeline-content:hover {
    transform: translateY(-3px);
}

.timeline-content h4 {
    margin-bottom: 5px;
    font-size: 1.1rem;
    color: var(--text-color);
}

.timeline-content .company {
    display: block;
    font-weight: 600;
    color: var(--primary-color);
    margin-bottom: 10px;
    font-size: 0.9rem;
}

.timeline-content p {
    font-size: 0.95rem;
    color: #666;
    line-height: 1.5;
}

@media (max-width: 768px) {
    .timeline-container {
        flex-direction: column;
        gap: 40px;
    }
}

/* --- Tech Slider Section --- */
.tech-slider-section {
    background: #fff;
    padding: 60px 0;
    margin-bottom: 40px; /* Ajout d'espace avec la section suivante */
    overflow: hidden;
    border-top: 1px solid #eee;
    border-bottom: 1px solid #eee;
}

.slider-container {
    width: 100%;
    margin: 0 auto;
    overflow: hidden;
    position: relative;
    padding-top: 30px; /* Espace après le titre */
}

.slider-track {
    display: flex;
    width: calc(150px * 30); /* 150px * 30 items (15 originaux + 15 dupliqués) */
    animation: scroll 30s linear infinite;
}

.slider-track:hover {
    animation-play-state: paused;
}

.slide {
    width: 150px;
    height: 120px; /* Augmentation pour inclure le texte */
    display: flex;
    flex-direction: column; /* Texte en dessous */
    align-items: center;
    justify-content: center;
    padding: 0 20px;
}

.slide img {
    max-width: 100%;
    max-height: 60px; /* Réduction légère */
    filter: grayscale(100%);
    opacity: 0.6;
    transition: all 0.3s ease;
    margin-bottom: 10px;
}

.tech-name {
    font-size: 0.9rem;
    color: #333;
    font-weight: 600;
    opacity: 0;
    transform: translateY(10px);
    transition: all 0.3s ease;
}

.slide:hover img {
    filter: grayscale(0%);
    opacity: 1;
    transform: scale(1.1);
}

.slide:hover .tech-name {
    opacity: 1;
    transform: translateY(0);
}

@keyframes scroll {
    0% { transform: translateX(0); }
    100% { transform: translateX(calc(-150px * 15)); } /* Scroll width of 15 unique items */
}