/* ========================================
   PAGE PROJETS - STYLES ADDITIONNELS
======================================== */

.page-hero {
    position: relative;
    min-height: 60vh;
    display: flex;
    align-items: center;
    justify-content: center;
    overflow: hidden;
    padding: 8rem 0 4rem;
}

.hero-bg-pattern {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: 
        linear-gradient(135deg, transparent 25%, rgba(212, 175, 55, 0.03) 25%, rgba(212, 175, 55, 0.03) 50%, transparent 50%, transparent 75%, rgba(212, 175, 55, 0.03) 75%),
        linear-gradient(45deg, transparent 25%, rgba(212, 175, 55, 0.03) 25%, rgba(212, 175, 55, 0.03) 50%, transparent 50%, transparent 75%, rgba(212, 175, 55, 0.03) 75%);
    background-size: 60px 60px;
    animation: patternMove 20s linear infinite;
}

@keyframes patternMove {
    0% {
        background-position: 0 0, 0 0;
    }
    100% {
        background-position: 60px 60px, -60px -60px;
    }
}

.page-label {
    display: inline-block;
    font-size: 0.9rem;
    letter-spacing: 4px;
    text-transform: uppercase;
    color: var(--color-accent);
    margin-bottom: 1.5rem;
    opacity: 0;
    animation: fadeInUp 1s ease 0.2s forwards;
}

.page-title {
    font-family: var(--font-display);
    font-size: clamp(4rem, 10vw, 8rem);
    line-height: 0.9;
    letter-spacing: 5px;
    margin-bottom: 2rem;
    color: var(--color-text);
    opacity: 0;
    animation: fadeInUp 1s ease 0.4s forwards;
    position: relative;
}

.page-title::after {
    content: '';
    position: absolute;
    bottom: -20px;
    left: 0;
    width: 150px;
    height: 4px;
    background: var(--color-accent);
}

.page-description {
    font-size: 1.25rem;
    color: var(--color-text-muted);
    max-width: 700px;
    line-height: 1.8;
    opacity: 0;
    animation: fadeInUp 1s ease 0.6s forwards;
}

/* ========================================
   FILTRES
======================================== */

.filters-section {
    padding: 3rem 0;
    position: sticky;
    top: 80px;
    z-index: 100;
    background: rgba(10, 10, 10, 0.95);
    backdrop-filter: blur(20px);
    border-bottom: 1px solid rgba(212, 175, 55, 0.1);
}

.filters {
    display: flex;
    gap: 1rem;
    justify-content: center;
    flex-wrap: wrap;
}

.filter-btn {
    padding: 0.75rem 1.5rem;
    background: transparent;
    border: 2px solid rgba(212, 175, 55, 0.3);
    border-radius: 30px;
    color: var(--color-text-muted);
    font-family: var(--font-body);
    font-size: 0.9rem;
    font-weight: 500;
    letter-spacing: 1px;
    text-transform: uppercase;
    cursor: pointer;
    transition: var(--transition);
    position: relative;
    overflow: hidden;
}

.filter-btn::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 0;
    height: 0;
    background: var(--color-accent);
    border-radius: 50%;
    transform: translate(-50%, -50%);
    transition: width 0.6s ease, height 0.6s ease;
    z-index: -1;
}

.filter-btn:hover::before,
.filter-btn.active::before {
    width: 300px;
    height: 300px;
}

.filter-btn:hover,
.filter-btn.active {
    color: var(--color-bg);
    border-color: var(--color-accent);
    transform: translateY(-2px);
}

/* ========================================
   GALERIE MASONRY
======================================== */

.projects-gallery {
    padding: 6rem 0;
}

.projects-masonry {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(350px, 1fr));
    gap: 2rem;
    position: relative;
}

.gallery-item {
    position: relative;
    background: var(--color-bg-alt);
    border-radius: 0.5rem;
    overflow: hidden;
    border: 1px solid rgba(212, 175, 55, 0.1);
    transition: var(--transition-slow);
    opacity: 1;
    transform: scale(1);
}

.gallery-item.hidden {
    opacity: 0;
    transform: scale(0.8);
    pointer-events: none;
    position: absolute;
}

.item-image {
    position: relative;
    width: 100%;
    height: 300px;
    background: linear-gradient(135deg, #2a2a2a 0%, #1a1a1a 100%);
    overflow: hidden;
}

.item-overlay {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: linear-gradient(180deg, transparent 0%, rgba(10, 10, 10, 0.7) 70%, rgba(10, 10, 10, 0.95) 100%);
    transition: var(--transition-slow);
}

.gallery-item:hover .item-overlay {
    background: linear-gradient(180deg, rgba(212, 175, 55, 0.1) 0%, rgba(10, 10, 10, 0.85) 70%, rgba(10, 10, 10, 1) 100%);
}

.item-number {
    position: absolute;
    top: 1.5rem;
    right: 1.5rem;
    font-family: var(--font-display);
    font-size: 4rem;
    color: rgba(212, 175, 55, 0.15);
    line-height: 1;
    transition: var(--transition);
    pointer-events: none;
}

.gallery-item:hover .item-number {
    color: rgba(212, 175, 55, 0.3);
    transform: scale(1.2) rotate(5deg);
}

.item-content {
    padding: 2rem;
}

.item-category {
    display: inline-block;
    font-size: 0.8rem;
    letter-spacing: 2px;
    text-transform: uppercase;
    color: var(--color-accent);
    margin-bottom: 0.75rem;
    font-weight: 600;
}

.item-title {
    font-family: var(--font-heading);
    font-size: 1.5rem;
    margin-bottom: 1rem;
    color: var(--color-text);
    line-height: 1.3;
}

.item-desc {
    color: var(--color-text-muted);
    line-height: 1.7;
    margin-bottom: 1.5rem;
}

.item-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
}

.item-tags span {
    padding: 0.4rem 0.9rem;
    background: rgba(212, 175, 55, 0.1);
    border: 1px solid rgba(212, 175, 55, 0.2);
    border-radius: 20px;
    font-size: 0.75rem;
    color: var(--color-accent);
    letter-spacing: 0.5px;
}

/* Effet hover sur les cartes */
.gallery-item {
    cursor: pointer;
}

.gallery-item:hover {
    transform: translateY(-10px);
    border-color: var(--color-accent);
    box-shadow: 0 20px 60px rgba(212, 175, 55, 0.2);
}

.gallery-item::after {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 3px;
    background: linear-gradient(90deg, var(--color-accent), transparent);
    transform: scaleX(0);
    transform-origin: left;
    transition: transform 0.6s cubic-bezier(0.77, 0, 0.175, 1);
}

.gallery-item:hover::after {
    transform: scaleX(1);
}

/* ========================================
   ANIMATIONS SPÉCIALES
======================================== */

/* Animation d'entrée des cartes */
.gallery-item {
    animation: cardFadeIn 0.8s cubic-bezier(0.77, 0, 0.175, 1) both;
}

.gallery-item:nth-child(1) { animation-delay: 0.1s; }
.gallery-item:nth-child(2) { animation-delay: 0.2s; }
.gallery-item:nth-child(3) { animation-delay: 0.3s; }
.gallery-item:nth-child(4) { animation-delay: 0.4s; }
.gallery-item:nth-child(5) { animation-delay: 0.5s; }
.gallery-item:nth-child(6) { animation-delay: 0.6s; }
.gallery-item:nth-child(7) { animation-delay: 0.7s; }
.gallery-item:nth-child(8) { animation-delay: 0.8s; }

@keyframes cardFadeIn {
    from {
        opacity: 0;
        transform: translateY(50px) scale(0.9);
    }
    to {
        opacity: 1;
        transform: translateY(0) scale(1);
    }
}

/* Effet de parallaxe sur scroll */
.gallery-item .item-image {
    transform-origin: center;
    will-change: transform;
}

/* ========================================
   RESPONSIVE
======================================== */

@media (max-width: 1024px) {
    .projects-masonry {
        grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
        gap: 1.5rem;
    }
}

@media (max-width: 768px) {
    .page-hero {
        min-height: 50vh;
        padding: 6rem 0 3rem;
    }
    
    .page-title {
        font-size: clamp(3rem, 12vw, 5rem);
    }
    
    .filters {
        gap: 0.75rem;
    }
    
    .filter-btn {
        padding: 0.6rem 1.2rem;
        font-size: 0.85rem;
    }
    
    .projects-masonry {
        grid-template-columns: 1fr;
    }
    
    .item-image {
        height: 250px;
    }
}

/* ========================================
   ÉTATS DE TRANSITION
======================================== */

.gallery-item.filtering {
    transition: opacity 0.4s ease, transform 0.4s ease;
}

/* Animation de pulse pour le filtre actif */
@keyframes pulse {
    0%, 100% {
        box-shadow: 0 0 0 0 rgba(212, 175, 55, 0.7);
    }
    50% {
        box-shadow: 0 0 0 10px rgba(212, 175, 55, 0);
    }
}

.filter-btn.active {
    animation: pulse 2s infinite;
}

/* Effet de zoom sur image au hover */
.item-image::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 100%;
    height: 100%;
    background: inherit;
    transform: translate(-50%, -50%) scale(1);
    transition: transform 0.6s ease;
    z-index: 0;
}

.gallery-item:hover .item-image::before {
    transform: translate(-50%, -50%) scale(1.1);
}

/* Effet de révélation sur les tags */
.item-tags span {
    opacity: 0;
    transform: translateY(10px);
    animation: tagReveal 0.4s ease forwards;
}

.item-tags span:nth-child(1) { animation-delay: 0.1s; }
.item-tags span:nth-child(2) { animation-delay: 0.2s; }
.item-tags span:nth-child(3) { animation-delay: 0.3s; }

@keyframes tagReveal {
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* Compteur de projets visibles */
.project-count {
    text-align: center;
    margin-bottom: 2rem;
    font-size: 1.1rem;
    color: var(--color-text-muted);
    letter-spacing: 1px;
}

.project-count span {
    color: var(--color-accent);
    font-weight: 600;
}