/* ===================================
   Variables CSS - Palette de couleurs
   =================================== */
:root {
    /* Couleurs principales - Light Mode */
    --beige-light: #F5F5DC;
    --beige-dark: #E8DCC4;
    --white: #FFFFFF;
    --white-off: #FAFAFA;
    --black: #1a1a1a;
    --black-light: #2d2d2d;
    
    /* Couleurs d'accent - Teal/Bleu-vert */
    --teal-light: #2dd4bf;
    --teal: #14b8a6;
    --teal-dark: #0d9488;
    
    /* Ombres */
    --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.08);
    --shadow-md: 0 4px 6px rgba(0, 0, 0, 0.1);
    --shadow-lg: 0 10px 25px rgba(0, 0, 0, 0.15);
    
    /* Transitions */
    --transition: all 0.3s ease;
    
    /* Espacements */
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 2rem;
    --spacing-lg: 3rem;
    --spacing-xl: 5rem;
}

/* Dark Mode Variables */
[data-theme="dark"] {
    /* Couleurs principales - Dark Mode */
    --beige-light: #1a1a1a;
    --beige-dark: #242424;
    --white: #1a1a1a;
    --white-off: #242424;
    --black: #e0e0e0;
    --black-light: #b0b0b0;
    
    /* Couleurs d'accent restent les mêmes */
    --teal-light: #2dd4bf;
    --teal: #14b8a6;
    --teal-dark: #0d9488;
    
    /* Ombres adaptées pour le dark mode */
    --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.3);
    --shadow-md: 0 4px 6px rgba(0, 0, 0, 0.4);
    --shadow-lg: 0 10px 25px rgba(0, 0, 0, 0.5);
}

/* ===================================
   Reset & Base Styles
   =================================== */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

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

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Inter', 'Segoe UI', 'Roboto', 'Oxygen', 'Ubuntu', 'Cantarell', sans-serif;
    line-height: 1.6;
    color: var(--black);
    background-color: var(--beige-light);
    overflow-x: hidden;
    transition: background-color 0.3s ease, color 0.3s ease;
}

/* ===================================
   Typography
   =================================== */
h1, h2, h3, h4, h5, h6 {
    font-weight: 600;
    line-height: 1.2;
    margin-bottom: var(--spacing-sm);
}

h1 { font-size: 3rem; }
h2 { font-size: 2.5rem; }
h3 { font-size: 1.75rem; }
h4 { font-size: 1.5rem; }

p {
    margin-bottom: var(--spacing-sm);
}

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

a:hover {
    color: var(--teal-dark);
}

/* ===================================
   Container & Layout
   =================================== */
.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 var(--spacing-md);
}

section {
    padding: var(--spacing-xl) 0;
}

/* ===================================
   Navigation
   =================================== */
.navbar {
    position: sticky;
    top: 0;
    background-color: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    box-shadow: var(--shadow-sm);
    z-index: 1000;
    transition: var(--transition);
}

[data-theme="dark"] .navbar {
    background-color: rgba(26, 26, 26, 0.95);
}

.nav-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: var(--spacing-sm) var(--spacing-md);
}

.logo {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--black);
}

.nav-menu {
    display: flex;
    list-style: none;
    gap: var(--spacing-md);
}

.nav-link {
    color: var(--black);
    font-weight: 500;
    padding: var(--spacing-xs) var(--spacing-sm);
    border-radius: 6px;
    transition: var(--transition);
}

.nav-link:hover {
    background-color: var(--beige-light);
    color: var(--teal);
}

.nav-link.active {
    color: var(--teal);
}

/* ===================================
   Theme Toggle Button
   =================================== */
.theme-toggle {
    background: transparent;
    border: 2px solid var(--teal);
    border-radius: 8px;
    padding: 0.5rem;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: var(--transition);
    color: var(--teal);
}

.theme-toggle:hover {
    background-color: var(--teal);
    color: var(--white);
    transform: rotate(180deg);
}

.theme-toggle .sun-icon,
.theme-toggle .moon-icon {
    display: none;
}

/* Afficher l'icône soleil en mode clair */
.theme-toggle .sun-icon {
    display: block;
}

/* Afficher l'icône lune en mode sombre */
[data-theme="dark"] .theme-toggle .sun-icon {
    display: none;
}

[data-theme="dark"] .theme-toggle .moon-icon {
    display: block;
}

/* ===================================
   Hero Section
   =================================== */
.hero {
    min-height: 90vh;
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    background: linear-gradient(135deg, var(--white) 0%, var(--beige-light) 100%);
    position: relative;
}

.hero-content {
    max-width: 800px;
}

.hero-title {
    font-size: 4rem;
    font-weight: 800;
    color: var(--black);
    margin-bottom: var(--spacing-sm);
}

.hero-subtitle {
    font-size: 1.75rem;
    color: var(--teal);
    font-weight: 600;
    margin-bottom: var(--spacing-sm);
}

.hero-description {
    font-size: 1.25rem;
    color: var(--black-light);
    margin-bottom: var(--spacing-lg);
    line-height: 1.8;
}

.hero-buttons {
    display: flex;
    gap: var(--spacing-sm);
    justify-content: center;
    flex-wrap: wrap;
}

/* ===================================
   Buttons
   =================================== */
.btn {
    display: inline-block;
    padding: 1rem 2rem;
    font-size: 1rem;
    font-weight: 600;
    border-radius: 8px;
    transition: var(--transition);
    cursor: pointer;
    border: 2px solid transparent;
}

.btn-primary {
    background-color: var(--teal);
    color: var(--white);
}

.btn-primary:hover {
    background-color: var(--teal-dark);
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.btn-secondary {
    background-color: transparent;
    color: var(--teal);
    border-color: var(--teal);
}

.btn-secondary:hover {
    background-color: var(--teal);
    color: var(--white);
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

/* ===================================
   Section Titles
   =================================== */
.section-title {
    text-align: center;
    font-size: 2.5rem;
    margin-bottom: var(--spacing-lg);
    color: var(--black);
    position: relative;
}

.section-title::after {
    content: '';
    display: block;
    width: 80px;
    height: 4px;
    background: linear-gradient(90deg, var(--teal-light), var(--teal-dark));
    margin: var(--spacing-sm) auto 0;
    border-radius: 2px;
}

/* ===================================
   About Section
   =================================== */
.about {
    background-color: var(--white);
}

.about-content {
    display: grid;
    grid-template-columns: 2fr 1fr;
    gap: var(--spacing-lg);
    align-items: center;
}

.about-text p {
    font-size: 1.1rem;
    line-height: 1.8;
    color: var(--black-light);
    margin-bottom: var(--spacing-md);
}

.about-image {
    display: flex;
    justify-content: center;
    align-items: center;
}

.avatar-placeholder {
    width: 250px;
    height: 250px;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--teal-light), var(--teal-dark));
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 5rem;
    font-weight: 800;
    color: var(--white);
    box-shadow: var(--shadow-lg);
}

/* ===================================
   Skills Section
   =================================== */
.skills {
    background-color: var(--beige-dark);
}

.skills-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: var(--spacing-md);
}

.skill-category {
    background-color: var(--white);
    padding: var(--spacing-md);
    border-radius: 12px;
    box-shadow: var(--shadow-sm);
    transition: var(--transition);
}

.skill-category:hover {
    transform: translateY(-5px);
    box-shadow: var(--shadow-lg);
}

.skill-category-title {
    font-size: 1.25rem;
    color: var(--teal);
    margin-bottom: var(--spacing-sm);
}

.skill-tags {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-xs);
}

.skill-tag {
    display: inline-block;
    padding: 0.5rem 1rem;
    background-color: var(--beige-light);
    color: var(--black);
    border-radius: 20px;
    font-size: 0.9rem;
    font-weight: 500;
    transition: var(--transition);
}

.skill-tag:hover {
    background-color: var(--teal);
    color: var(--white);
    transform: scale(1.05);
}

/* ===================================
   Projects Section
   =================================== */
.projects {
    background-color: var(--white);
}

.projects-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(350px, 1fr));
    gap: var(--spacing-md);
}

.project-card {
    background-color: var(--white-off);
    border-radius: 12px;
    padding: var(--spacing-md);
    box-shadow: var(--shadow-sm);
    transition: var(--transition);
    border: 2px solid transparent;
    position: relative;
}

.project-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-lg);
    border-color: var(--teal);
}

.project-card.featured {
    border: 2px solid var(--teal);
    background: linear-gradient(135deg, var(--white-off) 0%, var(--beige-light) 100%);
}

.project-header {
    margin-bottom: var(--spacing-sm);
}

.project-title {
    font-size: 1.5rem;
    color: var(--black);
    margin-bottom: var(--spacing-xs);
}

.badge-production {
    display: inline-block;
    background-color: var(--teal);
    color: var(--white);
    padding: 0.25rem 0.75rem;
    border-radius: 12px;
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
    margin-bottom: var(--spacing-sm);
}

.project-tags {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-xs);
    margin-top: var(--spacing-sm);
}

.tag {
    display: inline-block;
    padding: 0.35rem 0.75rem;
    background-color: var(--beige-light);
    color: var(--black);
    border-radius: 6px;
    font-size: 0.85rem;
    font-weight: 500;
}

.project-description {
    color: var(--black-light);
    line-height: 1.7;
    margin-bottom: var(--spacing-md);
}

.project-link {
    display: inline-flex;
    align-items: center;
    gap: var(--spacing-xs);
    color: var(--teal);
    font-weight: 600;
    transition: var(--transition);
}

.project-link:hover {
    color: var(--teal-dark);
    transform: translateX(5px);
}

.github-icon {
    width: 20px;
    height: 20px;
}

/* ===================================
   Experience Section
   =================================== */
.experience {
    background-color: var(--beige-light);
}

.timeline {
    max-width: 800px;
    margin: 0 auto;
    position: relative;
    padding-left: var(--spacing-lg);
}

.timeline::before {
    content: '';
    position: absolute;
    left: 0;
    top: 0;
    bottom: 0;
    width: 2px;
    background: linear-gradient(180deg, var(--teal-light), var(--teal-dark));
}

.timeline-item {
    position: relative;
    margin-bottom: var(--spacing-lg);
}

.timeline-marker {
    position: absolute;
    left: -3rem;
    top: 0;
    width: 16px;
    height: 16px;
    background-color: var(--teal);
    border: 3px solid var(--white);
    border-radius: 50%;
    box-shadow: var(--shadow-sm);
}

.timeline-content {
    background-color: var(--white);
    padding: var(--spacing-md);
    border-radius: 12px;
    box-shadow: var(--shadow-sm);
    transition: var(--transition);
}

.timeline-content:hover {
    box-shadow: var(--shadow-md);
    transform: translateX(5px);
}

.timeline-title {
    color: var(--black);
    font-size: 1.5rem;
    margin-bottom: var(--spacing-xs);
}

.timeline-company {
    color: var(--teal);
    font-weight: 600;
    margin-bottom: var(--spacing-xs);
}

.timeline-period {
    color: var(--black-light);
    font-size: 0.9rem;
    margin-bottom: var(--spacing-sm);
}

.timeline-description {
    color: var(--black-light);
    line-height: 1.7;
}

/* ===================================
   Contact Section
   =================================== */
.contact {
    background-color: var(--white);
}

.contact-intro {
    text-align: center;
    font-size: 1.2rem;
    max-width: 700px;
    margin: 0 auto var(--spacing-lg);
    color: var(--black-light);
}

.contact-cards {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--spacing-md);
    max-width: 900px;
    margin: 0 auto;
}

.contact-card {
    background-color: var(--white-off);
    padding: var(--spacing-md);
    border-radius: 12px;
    text-align: center;
    box-shadow: var(--shadow-sm);
    transition: var(--transition);
    cursor: pointer;
    border: 2px solid transparent;
}

.contact-card:hover {
    transform: translateY(-8px);
    box-shadow: var(--shadow-lg);
    border-color: var(--teal);
}

.contact-icon {
    color: var(--teal);
    margin-bottom: var(--spacing-sm);
}

.contact-card h3 {
    font-size: 1.25rem;
    color: var(--black);
    margin-bottom: var(--spacing-xs);
}

.contact-card p {
    color: var(--black-light);
    margin: 0;
}

/* ===================================
   Footer
   =================================== */
.footer {
    background-color: var(--black);
    color: var(--white);
    text-align: center;
    padding: var(--spacing-md) 0;
}

.footer p {
    margin: var(--spacing-xs) 0;
    opacity: 0.8;
}

/* ===================================
   Animations
   =================================== */
@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.fade-in {
    animation: fadeIn 0.8s ease-out forwards;
}

.fade-in:nth-child(1) { animation-delay: 0.1s; }
.fade-in:nth-child(2) { animation-delay: 0.2s; }
.fade-in:nth-child(3) { animation-delay: 0.3s; }
.fade-in:nth-child(4) { animation-delay: 0.4s; }

/* ===================================
   Responsive Design
   =================================== */

/* Tablet */
@media (max-width: 768px) {
    .nav-menu {
        gap: var(--spacing-sm);
    }
    
    .hero-title {
        font-size: 2.5rem;
    }
    
    .hero-subtitle {
        font-size: 1.5rem;
    }
    
    .hero-description {
        font-size: 1rem;
    }
    
    .about-content {
        grid-template-columns: 1fr;
        text-align: center;
    }
    
    .avatar-placeholder {
        width: 200px;
        height: 200px;
        font-size: 4rem;
    }
    
    .projects-grid {
        grid-template-columns: 1fr;
    }
    
    .timeline {
        padding-left: var(--spacing-md);
    }
    
    .timeline-marker {
        left: -2rem;
    }
}

/* Mobile */
@media (max-width: 480px) {
    :root {
        --spacing-xl: 3rem;
    }
    
    .nav-container {
        flex-direction: column;
        gap: var(--spacing-sm);
    }
    
    .nav-menu {
        flex-wrap: wrap;
        justify-content: center;
        gap: var(--spacing-xs);
    }
    
    .hero-title {
        font-size: 2rem;
    }
    
    .hero-subtitle {
        font-size: 1.25rem;
    }
    
    .hero-buttons {
        flex-direction: column;
    }
    
    .btn {
        width: 100%;
        text-align: center;
    }
    
    .section-title {
        font-size: 2rem;
    }
    
    h1 { font-size: 2rem; }
    h2 { font-size: 1.75rem; }
    h3 { font-size: 1.5rem; }
    
    .avatar-placeholder {
        width: 150px;
        height: 150px;
        font-size: 3rem;
    }
    
    .skills-grid {
        grid-template-columns: 1fr;
    }
    
    .contact-cards {
        grid-template-columns: 1fr;
    }
}