/* ==========================================
   VARIABLES CSS
   ========================================== */
:root {
    /* Couleurs */
    --color-bg: #fafaf8;
    --color-text: #1a1a1a;
    --color-text-light: #666666;
    --color-accent: #b8866f;
    --color-border: #e0e0dd;
    --color-white: #ffffff;
    --color-black: #000000;
    
    /* Typographie */
    --font-serif: 'Cormorant Garamond', serif;
    --font-sans: 'Work Sans', sans-serif;
    
    /* Espacements */
    --spacing-xs: 0.5rem;
    --spacing-sm: 1rem;
    --spacing-md: 2rem;
    --spacing-lg: 4rem;
    --spacing-xl: 6rem;
    --spacing-xxl: 8rem;
    
    /* Transitions */
    --transition-fast: 0.2s ease;
    --transition-medium: 0.4s ease;
    --transition-slow: 0.6s ease;
}

/* ==========================================
   RESET & BASE
   ========================================== */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

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

body {
    font-family: var(--font-sans);
    font-weight: 300;
    line-height: 1.8;
    color: var(--color-text);
    background-color: var(--color-bg);
    overflow-x: hidden;
}

img {
    max-width: 100%;
    height: auto;
    display: block;
}

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

/* ==========================================
   NAVIGATION
   ========================================== */
.nav {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    background-color: rgba(250, 250, 248, 0.95);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--color-border);
    z-index: 1000;
    padding: var(--spacing-sm) 0;
    transition: var(--transition-medium);
}

.nav-container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 var(--spacing-md);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.nav-logo {
    font-family: var(--font-serif);
    font-size: 1.5rem;
    font-weight: 500;
    letter-spacing: -0.02em;
}

.nav-links {
    display: flex;
    gap: var(--spacing-md);
}

.nav-link {
    font-size: 0.9rem;
    font-weight: 400;
    letter-spacing: 0.02em;
    position: relative;
}

.nav-link::after {
    content: '';
    position: absolute;
    bottom: -4px;
    left: 0;
    width: 0;
    height: 1px;
    background-color: var(--color-accent);
    transition: var(--transition-fast);
}

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

@media (max-width: 768px) {
    .nav-container {
        flex-direction: column;
        gap: var(--spacing-sm);
    }
    
    .nav-links {
        gap: var(--spacing-sm);
    }
    
    .nav-link {
        font-size: 0.85rem;
    }
}

/* ==========================================
   CONTAINER & SECTIONS
   ========================================== */
.container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 var(--spacing-md);
}

.section {
    padding: var(--spacing-xxl) 0;
    margin-top: 60px;
}

.section:first-of-type {
    padding-top: calc(var(--spacing-xxl) + 60px);
}

.section-header {
    display: flex;
    align-items: baseline;
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-xl);
}

.section-number {
    font-family: var(--font-serif);
    font-size: 0.875rem;
    color: var(--color-accent);
    font-weight: 400;
}

.section-title {
    font-family: var(--font-serif);
    font-size: clamp(2.5rem, 5vw, 4rem);
    font-weight: 400;
    letter-spacing: -0.02em;
    line-height: 1.2;
}

/* ==========================================
   PROJECTS GRID
   ========================================== */
.projects-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(350px, 1fr));
    gap: var(--spacing-lg);
}

.project-card {
    cursor: pointer;
    transition: var(--transition-medium);
    position: relative;
}

.project-card.active {
    transform: translateY(-4px);
}

.project-card:hover {
    transform: translateY(-8px);
}

.project-card-image {
    width: 100%;
    aspect-ratio: 4/5;
    overflow: hidden;
    background-color: var(--color-border);
    margin-bottom: var(--spacing-sm);
}

.project-card-image img {
    width: 100%;
    height: 100%;
    object-fit: cover;
    transition: var(--transition-slow);
}

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

.project-card-title {
    font-family: var(--font-serif);
    font-size: 1.75rem;
    font-weight: 500;
    letter-spacing: -0.01em;
    margin-bottom: var(--spacing-xs);
}

.project-card-meta {
    font-size: 0.875rem;
    color: var(--color-text-light);
    margin-bottom: var(--spacing-sm);
    display: flex;
    gap: var(--spacing-xs);
}

.project-card-description {
    font-size: 0.95rem;
    line-height: 1.6;
    color: var(--color-text-light);
}

/* ==========================================
   PROJECT DETAIL PANEL (DÉPLOIEMENT)
   ========================================== */
.project-detail-panel {
    grid-column: 1 / -1;
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.6s cubic-bezier(0.4, 0, 0.2, 1);
    opacity: 0;
}

.project-detail-panel.open {
    max-height: 5000px;
    opacity: 1;
    margin: var(--spacing-lg) 0;
}

.project-detail-content {
    background-color: var(--color-white);
    border: 1px solid var(--color-border);
    padding: var(--spacing-xl);
    position: relative;
    transform: translateY(-20px);
    transition: transform 0.6s cubic-bezier(0.4, 0, 0.2, 1);
}

.project-detail-panel.open .project-detail-content {
    transform: translateY(0);
}

.project-detail-close {
    position: absolute;
    top: var(--spacing-md);
    right: var(--spacing-md);
    width: 40px;
    height: 40px;
    background: none;
    border: 1px solid var(--color-border);
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.5rem;
    color: var(--color-text);
    transition: var(--transition-fast);
    z-index: 10;
}

.project-detail-close:hover {
    background-color: var(--color-black);
    color: var(--color-white);
    border-color: var(--color-black);
}

.project-detail-header {
    margin-bottom: var(--spacing-lg);
    padding-right: 60px;
}

.project-detail-meta {
    font-size: 0.875rem;
    color: var(--color-text-light);
    margin-bottom: var(--spacing-sm);
    display: flex;
    gap: var(--spacing-xs);
}

.project-detail-title {
    font-family: var(--font-serif);
    font-size: clamp(2rem, 4vw, 3.5rem);
    font-weight: 400;
    letter-spacing: -0.02em;
    line-height: 1.2;
    margin-bottom: var(--spacing-md);
}

.project-detail-short {
    font-size: 1.125rem;
    line-height: 1.6;
    color: var(--color-text-light);
    margin-bottom: var(--spacing-xl);
}

.project-detail-gallery {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-xl);
}

.project-detail-gallery img {
    width: 100%;
    height: auto;
    cursor: pointer;
    transition: var(--transition-medium);
    border: 1px solid var(--color-border);
}

.project-detail-gallery img:hover {
    opacity: 0.8;
    transform: scale(0.98);
}

.project-detail-long {
    max-width: 800px;
    font-size: 1rem;
    line-height: 1.8;
    color: var(--color-text);
}

.project-detail-long p {
    margin-bottom: var(--spacing-md);
}

@media (max-width: 768px) {
    .projects-grid {
        grid-template-columns: 1fr;
        gap: var(--spacing-lg);
    }
    
    .project-detail-content {
        padding: var(--spacing-md);
    }
    
    .project-detail-close {
        top: var(--spacing-sm);
        right: var(--spacing-sm);
    }
    
    .project-detail-gallery {
        grid-template-columns: 1fr;
    }
}

/* ==========================================
   LIGHTBOX (GALERIE PLEIN ÉCRAN)
   ========================================== */
.lightbox {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.95);
    z-index: 2000;
    align-items: center;
    justify-content: center;
    opacity: 0;
    transition: opacity 0.3s ease;
}

.lightbox.active {
    display: flex;
    opacity: 1;
}

.lightbox-content {
    position: relative;
    max-width: 90%;
    max-height: 90%;
    display: flex;
    align-items: center;
    justify-content: center;
}

.lightbox-image {
    max-width: 100%;
    max-height: 90vh;
    object-fit: contain;
}

.lightbox-close {
    position: absolute;
    top: 20px;
    right: 20px;
    width: 50px;
    height: 50px;
    background: rgba(255, 255, 255, 0.1);
    border: 1px solid rgba(255, 255, 255, 0.3);
    color: white;
    font-size: 2rem;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: var(--transition-fast);
    backdrop-filter: blur(10px);
}

.lightbox-close:hover {
    background: rgba(255, 255, 255, 0.2);
}

.lightbox-prev,
.lightbox-next {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    width: 60px;
    height: 60px;
    background: rgba(255, 255, 255, 0.1);
    border: 1px solid rgba(255, 255, 255, 0.3);
    color: white;
    font-size: 2rem;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: var(--transition-fast);
    backdrop-filter: blur(10px);
}

.lightbox-prev:hover,
.lightbox-next:hover {
    background: rgba(255, 255, 255, 0.2);
}

.lightbox-prev {
    left: 20px;
}

.lightbox-next {
    right: 20px;
}

.lightbox-counter {
    position: absolute;
    bottom: 20px;
    left: 50%;
    transform: translateX(-50%);
    color: white;
    font-size: 0.875rem;
    background: rgba(0, 0, 0, 0.5);
    padding: var(--spacing-xs) var(--spacing-sm);
    border-radius: 20px;
    backdrop-filter: blur(10px);
}

@media (max-width: 768px) {
    .lightbox-prev,
    .lightbox-next {
        width: 50px;
        height: 50px;
        font-size: 1.5rem;
    }
    
    .lightbox-prev {
        left: 10px;
    }
    
    .lightbox-next {
        right: 10px;
    }
    
    .lightbox-close {
        top: 10px;
        right: 10px;
        width: 45px;
        height: 45px;
    }
}

/* ==========================================
   ABOUT SECTION
   ========================================== */
.about-content {
    display: grid;
    grid-template-columns: 1.5fr 1fr;
    gap: var(--spacing-xl);
    align-items: start;
}

.about-text {
    max-width: 700px;
}

.about-text p {
    margin-bottom: var(--spacing-md);
    color: var(--color-text);
}

.about-image {
    position: sticky;
    top: 120px;
}

.about-image img {
    width: 100%;
    aspect-ratio: 4/5;
    object-fit: cover;
}

@media (max-width: 1024px) {
    .about-content {
        grid-template-columns: 1fr;
        gap: var(--spacing-lg);
    }
    
    .about-image {
        position: relative;
        top: 0;
    }
}

/* ==========================================
   CV SECTION
   ========================================== */
.cv-content {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: var(--spacing-xl);
}

.cv-category {
    font-family: var(--font-serif);
    font-size: 1.5rem;
    font-weight: 500;
    margin-bottom: var(--spacing-lg);
    letter-spacing: -0.01em;
}

.cv-item {
    display: grid;
    grid-template-columns: 120px 1fr;
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-lg);
    padding-bottom: var(--spacing-lg);
    border-bottom: 1px solid var(--color-border);
}

.cv-item:last-child {
    border-bottom: none;
}

.cv-year {
    font-size: 0.875rem;
    color: var(--color-accent);
    font-weight: 400;
}

.cv-details h4 {
    font-family: var(--font-serif);
    font-size: 1.25rem;
    font-weight: 500;
    margin-bottom: var(--spacing-xs);
}

.cv-details p {
    color: var(--color-text-light);
    font-size: 0.95rem;
}

@media (max-width: 768px) {
    .cv-content {
        grid-template-columns: 1fr;
        gap: var(--spacing-lg);
    }
    
    .cv-item {
        grid-template-columns: 1fr;
        gap: var(--spacing-xs);
    }
}

/* ==========================================
   CONTACT SECTION
   ========================================== */
.contact-content {
    max-width: 600px;
}

.contact-details {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-md);
}

.contact-item {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-xs);
}

.contact-label {
    font-size: 0.75rem;
    text-transform: uppercase;
    letter-spacing: 0.1em;
    color: var(--color-text-light);
}

.contact-item a {
    font-size: 1.125rem;
    color: var(--color-text);
    border-bottom: 1px solid transparent;
    display: inline-block;
    width: fit-content;
}

.contact-item a:hover {
    color: var(--color-accent);
    border-bottom-color: var(--color-accent);
}

/* ==========================================
   FOOTER
   ========================================== */
.footer {
    padding: var(--spacing-lg) 0;
    border-top: 1px solid var(--color-border);
    text-align: center;
}

.footer p {
    font-size: 0.875rem;
    color: var(--color-text-light);
}

/* ==========================================
   UTILITIES
   ========================================== */
.fade-in {
    opacity: 0;
    transform: translateY(30px);
    transition: opacity 0.6s ease, transform 0.6s ease;
}

.fade-in.visible {
    opacity: 1;
    transform: translateY(0);
}