/* ==========================================================================
   DESIGN SYSTEM & VARIABLES
   ========================================================================== */
:root {
    /* Couleurs principales */
    --bg-color: #06070a;
    --bg-card: rgba(15, 17, 26, 0.45);
    --text-color: #f3f4f6;
    --text-muted: #9ca3af;
    
    /* Accents & Gradients */
    --accent-primary: #8f43ff;
    --accent-secondary: #00f2fe;
    --accent-gradient: linear-gradient(135deg, var(--accent-primary) 0%, var(--accent-secondary) 100%);
    --accent-glow: rgba(143, 67, 255, 0.15);
    
    /* Glassmorphism */
    --glass-bg: rgba(255, 255, 255, 0.02);
    --glass-border: rgba(255, 255, 255, 0.07);
    --glass-border-hover: rgba(255, 255, 255, 0.15);
    --glass-shadow: rgba(0, 0, 0, 0.4);
    
    /* Typographies */
    --font-title: 'Space Grotesk', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
    --font-body: 'Inter', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
    
    /* Transitions & Spacing */
    --transition-smooth: all 0.4s cubic-bezier(0.16, 1, 0.3, 1);
    --transition-fast: all 0.2s ease;
    --border-radius-lg: 16px;
    --border-radius-md: 10px;
    --border-radius-sm: 6px;
    --max-width: 1200px;
}

/* ==========================================================================
   RESETS & GLOBAL STYLES
   ========================================================================== */
*, *::before, *::after {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

html {
    scroll-behavior: smooth;
    font-size: 16px;
}

body {
    background-color: var(--bg-color);
    color: var(--text-color);
    font-family: var(--font-body);
    line-height: 1.6;
    overflow-x: hidden;
    position: relative;
    min-height: 100vh;
}

a {
    color: inherit;
    text-decoration: none;
    transition: var(--transition-fast);
}

button, input, textarea {
    font-family: inherit;
}

/* Scrollbar personnalisée */
::-webkit-scrollbar {
    width: 8px;
}
::-webkit-scrollbar-track {
    background: var(--bg-color);
}
::-webkit-scrollbar-thumb {
    background: rgba(255, 255, 255, 0.1);
    border-radius: var(--border-radius-sm);
}
::-webkit-scrollbar-thumb:hover {
    background: var(--accent-primary);
}

/* Canvas d'Arrière-plan */
#particle-canvas {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: -1;
    pointer-events: all;
    background: radial-gradient(circle at 50% 50%, #0d0e15 0%, var(--bg-color) 100%);
}

/* ==========================================================================
   UTILITIES
   ========================================================================== */
.gradient-text {
    background: var(--accent-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    display: inline-block;
}

.glass-panel {
    background: var(--glass-bg);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border: 1px solid var(--glass-border);
    border-radius: var(--border-radius-lg);
    box-shadow: 0 8px 32px var(--glass-shadow);
    transition: var(--transition-smooth);
}

.glass-panel:hover {
    border-color: var(--glass-border-hover);
    box-shadow: 0 12px 40px rgba(0, 0, 0, 0.5), 0 0 20px var(--accent-glow);
}

.cta-button {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 12px 28px;
    font-weight: 500;
    font-family: var(--font-title);
    border-radius: var(--border-radius-md);
    cursor: pointer;
    transition: var(--transition-smooth);
    border: none;
    position: relative;
    overflow: hidden;
}

.cta-button.primary {
    background: var(--accent-gradient);
    color: #fff;
    box-shadow: 0 4px 15px rgba(143, 67, 255, 0.4);
}

.cta-button.primary:hover {
    transform: translateY(-2px);
    box-shadow: 0 6px 20px rgba(0, 242, 254, 0.5);
}

.cta-button.secondary {
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid var(--glass-border);
    color: var(--text-color);
}

.cta-button.secondary:hover {
    background: rgba(255, 255, 255, 0.1);
    border-color: var(--text-color);
    transform: translateY(-2px);
}

.cta-button.mini {
    padding: 8px 18px;
    font-size: 0.9rem;
    background: var(--accent-gradient);
    color: #fff;
}

.cta-button.mini:hover {
    box-shadow: 0 0 15px var(--accent-primary);
}

.section-container {
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 100px 24px;
}

.section-header {
    text-align: center;
    margin-bottom: 60px;
}

.section-tag {
    font-family: var(--font-title);
    font-size: 0.85rem;
    text-transform: uppercase;
    letter-spacing: 2px;
    color: var(--accent-secondary);
    display: block;
    margin-bottom: 8px;
}

.section-title {
    font-family: var(--font-title);
    font-size: 2.5rem;
    font-weight: 700;
}

.section-divider {
    width: 60px;
    height: 4px;
    background: var(--accent-gradient);
    margin: 15px auto 0;
    border-radius: 2px;
}

/* ==========================================================================
   HEADER & NAVIGATION
   ========================================================================== */
.header {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    z-index: 100;
    transition: var(--transition-smooth);
    border-bottom: 1px solid transparent;
}

.header.scrolled {
    background: rgba(6, 7, 10, 0.7);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border-color: var(--glass-border);
    padding: 12px 0;
}

.nav-container {
    max-width: var(--max-width);
    margin: 0 auto;
    padding: 20px 24px;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.header.scrolled .nav-container {
    padding: 8px 24px;
}

.logo {
    font-family: var(--font-title);
    font-size: 1.6rem;
    font-weight: 700;
    letter-spacing: -0.5px;
    display: flex;
    align-items: center;
}

.logo-sky {
    color: var(--text-color);
}
.logo-and {
    color: var(--accent-secondary);
    margin: 0 2px;
}
.logo-craft {
    background: var(--accent-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.nav-menu {
    display: flex;
    gap: 30px;
}

.nav-link {
    font-family: var(--font-title);
    font-weight: 500;
    font-size: 0.95rem;
    color: var(--text-muted);
    position: relative;
    padding: 6px 0;
}

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

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

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

.nav-actions {
    display: flex;
    align-items: center;
    gap: 15px;
}

/* Bouton hamburger mobile */
.mobile-nav-toggle {
    display: none;
    flex-direction: column;
    justify-content: space-between;
    width: 24px;
    height: 18px;
    background: transparent;
    border: none;
    cursor: pointer;
}

.mobile-nav-toggle .bar {
    width: 100%;
    height: 2px;
    background-color: var(--text-color);
    border-radius: 2px;
    transition: var(--transition-fast);
}

/* ==========================================================================
   HERO SECTION
   ========================================================================== */
.hero-section {
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    position: relative;
    padding: 0 24px;
    text-align: center;
}

.hero-content {
    max-width: 800px;
    z-index: 2;
    margin-top: 60px;
}

.hero-subtitle {
    font-family: var(--font-title);
    color: var(--accent-secondary);
    font-size: 1.1rem;
    font-weight: 500;
    letter-spacing: 4px;
    text-transform: uppercase;
    margin-bottom: 20px;
    animation: fadeInUp 0.8s ease forwards;
}

.hero-title {
    font-family: var(--font-title);
    font-size: clamp(2.5rem, 5vw, 4.5rem);
    font-weight: 700;
    line-height: 1.15;
    margin-bottom: 24px;
    animation: fadeInUp 1s ease forwards;
}

.hero-description {
    font-size: clamp(1rem, 2vw, 1.25rem);
    color: var(--text-muted);
    max-width: 600px;
    margin: 0 auto 40px;
    animation: fadeInUp 1.2s ease forwards;
}

.hero-ctas {
    display: flex;
    gap: 20px;
    justify-content: center;
    animation: fadeInUp 1.4s ease forwards;
}

/* Indicateur de défilement */
.scroll-indicator {
    position: absolute;
    bottom: 40px;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 8px;
    opacity: 0.7;
    animation: float 2s infinite ease-in-out;
}

.scroll-indicator .mouse {
    width: 24px;
    height: 40px;
    border: 2px solid var(--text-muted);
    border-radius: 12px;
    position: relative;
}

.scroll-indicator .wheel {
    width: 4px;
    height: 8px;
    background-color: var(--accent-secondary);
    border-radius: 2px;
    position: absolute;
    top: 6px;
    left: 50%;
    transform: translateX(-50%);
    animation: scrollWheel 1.5s infinite ease-in-out;
}

/* ==========================================================================
   ABOUT SECTION
   ========================================================================== */
.about-grid {
    display: grid;
    grid-template-columns: 1.5fr 1fr;
    gap: 30px;
    align-items: stretch;
}

.about-card {
    padding: 40px;
}

.about-card h3 {
    font-family: var(--font-title);
    font-size: 1.8rem;
    margin-bottom: 20px;
    color: var(--text-color);
}

.about-card p {
    color: var(--text-muted);
    margin-bottom: 20px;
}

.about-card p:last-child {
    margin-bottom: 0;
}

.stats-card {
    display: flex;
    flex-direction: column;
    justify-content: space-around;
    gap: 20px;
}

.stat-item {
    text-align: center;
    padding: 15px;
}

.stat-number {
    font-family: var(--font-title);
    font-size: 3rem;
    font-weight: 700;
    display: block;
    line-height: 1.1;
}

.stat-label {
    font-size: 0.95rem;
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 1px;
}

/* ==========================================================================
   PROJECTS SECTION
   ========================================================================== */
.project-filters {
    display: flex;
    justify-content: center;
    gap: 15px;
    margin-bottom: 50px;
    flex-wrap: wrap;
}

.filter-btn {
    background: rgba(255, 255, 255, 0.03);
    border: 1px solid var(--glass-border);
    padding: 8px 20px;
    color: var(--text-muted);
    font-family: var(--font-title);
    font-weight: 500;
    border-radius: 20px;
    cursor: pointer;
    transition: var(--transition-fast);
}

.filter-btn:hover, .filter-btn.active {
    background: var(--accent-gradient);
    color: #fff;
    border-color: transparent;
    box-shadow: 0 4px 15px rgba(143, 67, 255, 0.3);
}

.projects-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 30px;
}

.project-card {
    overflow: hidden;
    display: flex;
    flex-direction: column;
    height: 100%;
}

.project-card.hidden {
    display: none;
}

.project-image-container {
    height: 200px;
    position: relative;
    overflow: hidden;
    background: linear-gradient(135deg, #11131e 0%, #1a1e2f 100%);
    border-bottom: 1px solid var(--glass-border);
    display: flex;
    align-items: center;
    justify-content: center;
}

.project-image-placeholder {
    font-size: 3.5rem;
    color: rgba(255, 255, 255, 0.1);
    transition: var(--transition-smooth);
}

.project-card:hover .project-image-placeholder {
    color: var(--accent-secondary);
    transform: scale(1.15) rotate(5deg);
}

.project-overlay-gradient {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(0deg, rgba(6, 7, 10, 0.8) 0%, transparent 100%);
    z-index: 1;
}

.project-tags {
    position: absolute;
    top: 15px;
    left: 15px;
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    z-index: 2;
}

.project-tags span {
    font-size: 0.75rem;
    background: rgba(6, 7, 10, 0.8);
    backdrop-filter: blur(4px);
    -webkit-backdrop-filter: blur(4px);
    border: 1px solid rgba(255, 255, 255, 0.1);
    color: #fff;
    padding: 4px 10px;
    border-radius: 12px;
}

.project-info {
    padding: 25px;
    display: flex;
    flex-direction: column;
    flex-grow: 1;
}

.project-card-title {
    font-family: var(--font-title);
    font-size: 1.25rem;
    font-weight: 600;
    margin-bottom: 12px;
}

.project-card-desc {
    color: var(--text-muted);
    font-size: 0.95rem;
    margin-bottom: 20px;
    flex-grow: 1;
}

.project-link {
    font-family: var(--font-title);
    font-weight: 500;
    font-size: 0.9rem;
    color: var(--accent-secondary);
    display: inline-flex;
    align-items: center;
    gap: 8px;
}

.project-link i {
    font-size: 0.8rem;
    transition: transform 0.3s ease;
}

.project-card:hover .project-link i {
    transform: translate(3px, -3px);
}

/* ==========================================================================
   SKILLS SECTION
   ========================================================================== */
.skills-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 30px;
}

.skills-category {
    padding: 35px;
}

.skills-category-header {
    display: flex;
    align-items: center;
    gap: 15px;
    margin-bottom: 30px;
    border-bottom: 1px solid var(--glass-border);
    padding-bottom: 15px;
}

.skills-category-header h3 {
    font-family: var(--font-title);
    font-size: 1.35rem;
}

.icon-gradient {
    font-size: 1.5rem;
    background: var(--accent-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.skills-list {
    display: flex;
    flex-direction: column;
    gap: 25px;
}

.skill-item {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.skill-meta {
    display: flex;
    justify-content: space-between;
    font-size: 0.9rem;
}

.skill-name {
    font-weight: 500;
    color: var(--text-color);
}

.skill-pct {
    color: var(--accent-secondary);
    font-weight: 600;
}

.skill-bar-bg {
    width: 100%;
    height: 6px;
    background: rgba(255, 255, 255, 0.05);
    border-radius: 3px;
    overflow: hidden;
}

.skill-bar-fill {
    height: 100%;
    background: var(--accent-gradient);
    border-radius: 3px;
    transform: scaleX(0);
    transform-origin: left;
    transition: transform 1.5s cubic-bezier(0.16, 1, 0.3, 1);
}

/* Activation de la barre de compétence par le défilement */
.scroll-reveal.active .skill-bar-fill {
    transform: scaleX(1);
}

/* ==========================================================================
   CONTACT SECTION
   ========================================================================== */
.contact-grid {
    display: grid;
    grid-template-columns: 1fr 1.2fr;
    gap: 30px;
    align-items: stretch;
}

.contact-info {
    padding: 40px;
    display: flex;
    flex-direction: column;
}

.contact-info h3 {
    font-family: var(--font-title);
    font-size: 1.8rem;
    margin-bottom: 15px;
}

.contact-info p {
    color: var(--text-muted);
    margin-bottom: 30px;
}

.contact-details {
    display: flex;
    flex-direction: column;
    gap: 25px;
    flex-grow: 1;
}

.detail-item {
    display: flex;
    align-items: center;
    gap: 20px;
}

.detail-item i {
    font-size: 1.4rem;
    width: 44px;
    height: 44px;
    background: var(--glass-bg);
    border: 1px solid var(--glass-border);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
}

.detail-item h4 {
    font-size: 0.85rem;
    text-transform: uppercase;
    letter-spacing: 1px;
    color: var(--text-muted);
}

.detail-item a, .detail-item span {
    font-size: 1.05rem;
    font-weight: 500;
}

.detail-item a:hover {
    color: var(--accent-secondary);
}

.social-links {
    display: flex;
    gap: 15px;
    margin-top: 30px;
}

.social-link {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background: var(--glass-bg);
    border: 1px solid var(--glass-border);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-muted);
    font-size: 1.1rem;
    transition: var(--transition-smooth);
}

.social-link:hover {
    color: #fff;
    border-color: var(--accent-secondary);
    box-shadow: 0 0 10px rgba(0, 242, 254, 0.4);
    transform: translateY(-3px);
}

/* Formulaire Styles */
.contact-form {
    padding: 40px;
    display: flex;
    flex-direction: column;
    gap: 25px;
}

.form-group {
    position: relative;
    width: 100%;
}

.form-group input, .form-group textarea {
    width: 100%;
    background: rgba(255, 255, 255, 0.02);
    border: 1px solid var(--glass-border);
    border-radius: var(--border-radius-md);
    padding: 16px;
    font-size: 1rem;
    color: #fff;
    outline: none;
    transition: var(--transition-smooth);
}

.form-group textarea {
    resize: vertical;
}

.form-group label {
    position: absolute;
    left: 16px;
    top: 50%;
    transform: translateY(-50%);
    color: var(--text-muted);
    pointer-events: none;
    transition: var(--transition-smooth);
}

.form-group textarea ~ label {
    top: 25px;
}

/* Animation des labels flottants */
.form-group input:focus ~ label,
.form-group input:not(:placeholder-shown) ~ label,
.form-group textarea:focus ~ label,
.form-group textarea:not(:placeholder-shown) ~ label {
    top: 0;
    left: 12px;
    font-size: 0.75rem;
    padding: 0 8px;
    background: var(--bg-color);
    color: var(--accent-secondary);
    border-radius: 4px;
}

.form-group input:focus, .form-group textarea:focus {
    border-color: var(--accent-secondary);
    box-shadow: 0 0 15px rgba(0, 242, 254, 0.15);
}

.form-submit {
    align-self: flex-start;
    gap: 10px;
}

.form-status {
    font-size: 0.95rem;
    margin-top: 10px;
    display: none;
    padding: 10px 15px;
    border-radius: var(--border-radius-sm);
}

.form-status.success {
    display: block;
    background: rgba(16, 185, 129, 0.1);
    border: 1px solid rgba(16, 185, 129, 0.2);
    color: #10b981;
}

.form-status.error {
    display: block;
    background: rgba(239, 68, 68, 0.1);
    border: 1px solid rgba(239, 68, 68, 0.2);
    color: #ef4444;
}

/* ==========================================================================
   FOOTER
   ========================================================================== */
.footer {
    border-top: 1px solid var(--glass-border);
    padding: 30px 24px;
    background: rgba(6, 7, 10, 0.9);
    backdrop-filter: blur(8px);
    -webkit-backdrop-filter: blur(8px);
}

.footer-container {
    max-width: var(--max-width);
    margin: 0 auto;
    display: flex;
    justify-content: space-between;
    align-items: center;
    color: var(--text-muted);
    font-size: 0.95rem;
}

.back-to-top {
    width: 40px;
    height: 40px;
    border-radius: var(--border-radius-sm);
    background: var(--glass-bg);
    border: 1px solid var(--glass-border);
    display: flex;
    align-items: center;
    justify-content: center;
    transition: var(--transition-smooth);
}

.back-to-top:hover {
    color: #fff;
    background: var(--accent-gradient);
    border-color: transparent;
    transform: translateY(-3px);
}

/* ==========================================================================
   ANIMATIONS & SCROLL REVEAL
   ========================================================================== */
@keyframes fadeInUp {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

@keyframes float {
    0%, 100% {
        transform: translateY(0);
    }
    50% {
        transform: translateY(-8px);
    }
}

@keyframes scrollWheel {
    0% {
        opacity: 0;
        top: 6px;
    }
    30% {
        opacity: 1;
    }
    80% {
        opacity: 0;
        top: 25px;
    }
    100% {
        opacity: 0;
        top: 6px;
    }
}

/* Classes pour le scroll reveal */
.scroll-reveal {
    opacity: 0;
    transform: translateY(40px);
    transition: opacity 0.8s ease, transform 0.8s cubic-bezier(0.16, 1, 0.3, 1);
}

.scroll-reveal.active {
    opacity: 1;
    transform: translateY(0);
}

/* ==========================================================================
   MEDIA QUERIES (RESPONSIVE)
   ========================================================================== */
@media (max-width: 992px) {
    .about-grid {
        grid-template-columns: 1fr;
    }
    .contact-grid {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 768px) {
    .section-title {
        font-size: 2rem;
    }
    
    /* Navigation mobile */
    .mobile-nav-toggle {
        display: flex;
    }
    
    .nav-menu {
        position: fixed;
        top: 0;
        right: -100%;
        width: 80%;
        max-width: 320px;
        height: 100vh;
        background: rgba(6, 7, 10, 0.95);
        backdrop-filter: blur(20px);
        -webkit-backdrop-filter: blur(20px);
        border-left: 1px solid var(--glass-border);
        flex-direction: column;
        justify-content: center;
        align-items: center;
        gap: 40px;
        transition: right 0.4s cubic-bezier(0.16, 1, 0.3, 1);
        z-index: 99;
    }
    
    .nav-menu.open {
        right: 0;
    }
    
    .nav-link {
        font-size: 1.25rem;
    }
    
    .nav-actions {
        margin-right: 40px;
    }
    
    /* Menu hamburger animé */
    .mobile-nav-toggle.open .bar:nth-child(1) {
        transform: translateY(8px) rotate(45deg);
    }
    
    .mobile-nav-toggle.open .bar:nth-child(2) {
        opacity: 0;
    }
    
    .mobile-nav-toggle.open .bar:nth-child(3) {
        transform: translateY(-8px) rotate(-45deg);
    }
    
    .hero-ctas {
        flex-direction: column;
        gap: 15px;
        width: 100%;
        max-width: 280px;
        margin: 0 auto;
    }
}