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

:root {
    --bg-primary: #0a0e27;
    --bg-secondary: #151932;
    --accent: #00d4ff;
    --accent-hover: #00b8e6;
    --text-primary: #ffffff;
    --text-secondary: #a0aec0;
    --card-bg: rgba(21, 25, 50, 0.8);
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
    background: var(--bg-primary);
    color: var(--text-primary);
    line-height: 1.6;
    overflow-x: hidden;
}

.background-animation {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: -1;
    background: linear-gradient(135deg, #0a0e27 0%, #1a1f3a 50%, #0a0e27 100%);
}

.stars {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
}

.star {
    position: absolute;
    background: white;
    border-radius: 50%;
    animation: twinkle 3s infinite;
}

@keyframes twinkle {
    0%, 100% { opacity: 0.3; }
    50% { opacity: 1; }
}

header {
    position: fixed;
    top: 0;
    width: 100%;
    padding: 1.5rem 2rem;
    background: rgba(10, 14, 39, 0.95);
    backdrop-filter: blur(10px);
    z-index: 1000;
    border-bottom: 1px solid rgba(0, 212, 255, 0.1);
}

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

.logo {
    font-size: 1.5rem;
    font-weight: bold;
    color: var(--accent);
    text-decoration: none;
    transition: transform 0.3s;
}

.logo:hover {
    transform: scale(1.05);
}

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

.nav-links a {
    color: var(--text-primary);
    text-decoration: none;
    transition: color 0.3s;
    position: relative;
}

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

.nav-links a::after {
    content: '';
    position: absolute;
    bottom: -5px;
    left: 0;
    width: 0;
    height: 2px;
    background: var(--accent);
    transition: width 0.3s;
}

.nav-links a.active::after {
    width: 100%;
}

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

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

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

section {
    min-height: 100vh;
    display: flex;
    align-items: center;
    padding: 6rem 0;
}

/* Système de pages */
.page {
    min-height: 100vh;
    display: none;
    opacity: 0;
    animation: fadeIn 0.5s forwards;
}

.page.active {
    display: flex;
    align-items: center;
}

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

.hero {
    text-align: center;
}

.hero h1 {
    font-size: 4rem;
    margin-bottom: 1rem;
    background: linear-gradient(135deg, var(--accent) 0%, #00b8e6 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    animation: fadeInUp 1s;
}

.hero p {
    font-size: 1.5rem;
    color: var(--text-secondary);
    margin-bottom: 2rem;
    animation: fadeInUp 1s 0.2s backwards;
}

.social-links {
    display: flex;
    gap: 1.5rem;
    justify-content: center;
    margin-top: 2rem;
    animation: fadeInUp 1s 0.4s backwards;
}

.social-links a {
    width: 50px;
    height: 50px;
    border-radius: 50%;
    background: var(--card-bg);
    border: 2px solid var(--accent);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--accent);
    text-decoration: none;
    transition: all 0.3s;
}

.social-links a:hover {
    background: var(--accent);
    color: var(--bg-primary);
    transform: translateY(-5px);
    box-shadow: 0 10px 20px rgba(0, 212, 255, 0.3);
}

.section-title {
    font-size: 2.5rem;
    text-align: center;
    margin-bottom: 3rem;
    color: var(--accent);
}

/* Style spécial pour la page Minecraft Mods */
.section-title:has(+ p) {
    margin-bottom: 1rem;
}

.about-content {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 3rem;
    align-items: center;
}

.about-text {
    animation: fadeInLeft 1s;
}

.about-text h3 {
    font-size: 1.8rem;
    margin-bottom: 1rem;
}

.about-text p {
    color: var(--text-secondary);
    margin-bottom: 1rem;
}

.skills {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
    gap: 1.5rem;
    animation: fadeInRight 1s;
}

.skill-card {
    background: var(--card-bg);
    padding: 1.5rem;
    border-radius: 10px;
    border: 1px solid rgba(0, 212, 255, 0.2);
    text-align: center;
    transition: all 0.3s;
}

.skill-card:hover {
    transform: translateY(-5px);
    border-color: var(--accent);
    box-shadow: 0 10px 30px rgba(0, 212, 255, 0.2);
}

.projects-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 2rem;
}

.projects-controls {
    display: flex;
    flex-direction: column;
    gap: 1rem;
    justify-content: center;
    margin-bottom: 2rem;
}

/* Filtres de langage */
.language-filters {
    display: flex;
    gap: 0.5rem;
    flex-wrap: wrap;
    justify-content: center;
}

.language-filter-btn {
    padding: 0.5rem 1rem;
    background: var(--bg-secondary);
    color: var(--text-primary);
    border: 1px solid rgba(0, 212, 255, 0.15);
    border-radius: 20px;
    cursor: pointer;
    transition: all 0.3s;
    font-size: 0.85rem;
    font-family: inherit;
}

.language-filter-btn:hover {
    border-color: var(--accent);
    transform: translateY(-1px);
    box-shadow: 0 3px 10px rgba(0, 212, 255, 0.15);
}

.language-filter-btn.active {
    background: rgba(0, 212, 255, 0.15);
    color: var(--accent);
    border-color: var(--accent);
    font-weight: 600;
}

/* Boutons de tri */
.sort-buttons {
    display: flex;
    gap: 1rem;
    flex-wrap: wrap;
    justify-content: center;
}

.sort-btn {
    padding: 0.7rem 1.5rem;
    background: var(--card-bg);
    color: var(--text-primary);
    border: 1px solid rgba(0, 212, 255, 0.2);
    border-radius: 25px;
    cursor: pointer;
    transition: all 0.3s;
    font-size: 0.95rem;
    font-family: inherit;
}

.sort-btn:hover {
    border-color: var(--accent);
    transform: translateY(-2px);
    box-shadow: 0 5px 15px rgba(0, 212, 255, 0.2);
}

.sort-btn.active {
    background: var(--accent);
    color: var(--bg-primary);
    border-color: var(--accent);
    font-weight: bold;
}

.sort-btn.active:hover {
    background: var(--accent-hover);
}

.project-card {
    background: var(--card-bg);
    border-radius: 15px;
    padding: 2rem;
    border: 1px solid rgba(0, 212, 255, 0.2);
    transition: all 0.3s;
    animation: fadeInUp 0.6s backwards;
}

.project-card:nth-child(2) { animation-delay: 0.1s; }
.project-card:nth-child(3) { animation-delay: 0.2s; }
.project-card:nth-child(4) { animation-delay: 0.3s; }

.project-card:hover {
    transform: translateY(-10px);
    border-color: var(--accent);
    box-shadow: 0 15px 40px rgba(0, 212, 255, 0.3);
}

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

.project-card p {
    color: var(--text-secondary);
    margin-bottom: 1rem;
}

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

.tag {
    background: rgba(0, 212, 255, 0.1);
    color: var(--accent);
    padding: 0.3rem 0.8rem;
    border-radius: 20px;
    font-size: 0.85rem;
}

.tag-language {
    background: rgba(0, 212, 255, 0.15);
    color: var(--accent);
    border: 1px solid rgba(0, 212, 255, 0.3);
}

.tag-stars {
    background: rgba(255, 215, 0, 0.1);
    color: #ffd700;
    border: 1px solid rgba(255, 215, 0, 0.3);
}

.tag-topic {
    background: rgba(147, 51, 234, 0.1);
    color: #a78bfa;
    border: 1px solid rgba(147, 51, 234, 0.3);
}

.tag-more {
    background: rgba(156, 163, 175, 0.1);
    color: #9ca3af;
    border: 1px solid rgba(156, 163, 175, 0.3);
    font-size: 0.8rem;
}

.project-link {
    display: inline-block;
    margin-top: 1rem;
    color: var(--accent);
    text-decoration: none;
    transition: all 0.3s;
}

.project-link:hover {
    transform: translateX(5px);
}

.contact-content {
    text-align: center;
    max-width: 600px;
    margin: 0 auto;
}

.contact-content p {
    color: var(--text-secondary);
    margin-bottom: 2rem;
    font-size: 1.2rem;
}

.contact-email {
    display: inline-block;
    padding: 1rem 2rem;
    background: linear-gradient(135deg, var(--accent) 0%, #00b8e6 100%);
    color: var(--bg-primary);
    text-decoration: none;
    border-radius: 50px;
    font-weight: bold;
    transition: all 0.3s;
    box-shadow: 0 5px 15px rgba(0, 212, 255, 0.3);
}

.contact-email:hover {
    transform: translateY(-3px);
    box-shadow: 0 10px 25px rgba(0, 212, 255, 0.5);
}

footer {
    text-align: center;
    padding: 2rem;
    background: var(--bg-secondary);
    color: var(--text-secondary);
}

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

@keyframes fadeInLeft {
    from {
        opacity: 0;
        transform: translateX(-30px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

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

.loading {
    text-align: center;
    padding: 2rem;
    color: var(--text-secondary);
}

@media (max-width: 768px) {
    .hero h1 {
        font-size: 2.5rem;
    }

    .about-content {
        grid-template-columns: 1fr;
    }

    .nav-links {
        gap: 1rem;
        font-size: 0.9rem;
    }

    section {
        padding: 4rem 0;
    }
    
    .language-filters {
        gap: 0.4rem;
    }
    
    .language-filter-btn {
        padding: 0.4rem 0.8rem;
        font-size: 0.8rem;
    }
}