:root{--bg-color:#f0f0f0;--text-color:#333;--card-bg:#fff;--card-shadow:rgba(0, 0, 0, 0.1);--accent:rgb(255, 34, 0)}body.dark-mode{--bg-color:#181818;--text-color:#eee;--card-bg:#222;--card-shadow:rgba(255, 255, 255, 0.08);--accent:#bf5723}*{box-sizing:border-box;margin:0;padding:0}body{font-family:sans-serif;background:var(--bg-color);color:var(--text-color);line-height:1.5;min-height:100vh;transition:background .3s,color .3s}#gallery{display:grid;grid-template-columns:repeat(auto-fit,minmax(250px,1fr));gap:16px;padding:20px}.image-card{background:var(--card-bg);border-radius:8px;overflow:hidden;box-shadow:0 0 6px var(--card-shadow);padding:10px;transition:all .4s cubic-bezier(.175,.885,.32,1.275);position:relative;opacity:0;transform:translateY(20px);will-change:transform}.image-card.visible{opacity:1;transform:translateY(0)}.image-card:hover{transform:translateY(-5px) scale(1.02);box-shadow:0 12px 24px rgba(0,0,0,.15);z-index:2}.image-card:nth-child(1){transition-delay:.1s}.image-card:nth-child(2){transition-delay:.2s}.image-card:nth-child(3){transition-delay:.3s}.image-card:nth-child(4){transition-delay:.4s}.image-card:nth-child(5){transition-delay:.5s}.image-card:nth-child(6){transition-delay:.6s}body.dark-mode .image-card:hover{box-shadow:0 12px 24px rgba(255,255,255,.1)}.image-container{position:relative;width:100%;padding-top:66.6%;margin-bottom:8px;border-radius:6px;overflow:hidden}.gallery-image{position:absolute;top:0;left:0;width:100%;height:100%;object-fit:cover;opacity:0;transition:opacity .5s ease,transform .5s ease}.gallery-image.loaded{opacity:1}.image-card:hover .gallery-image{transform:scale(1.1)}.skeleton{position:absolute;top:0;left:0;width:100%;height:100%;background:linear-gradient(90deg,rgba(200,200,200,.2) 25%,rgba(200,200,200,.4) 50%,rgba(200,200,200,.2) 75%);background-size:200% 100%;animation:shimmer 1.5s infinite linear;border-radius:4px}.skeleton .shimmer{position:absolute;top:0;left:0;width:50%;height:100%;background:linear-gradient(90deg,rgba(255,255,255,0) 0,rgba(255,255,255,.8) 50%,rgba(255,255,255,0) 100%);animation:shimmer 2s infinite;filter:blur(8px)}@keyframes shimmer{0%{transform:translateX(-150%)}100%{transform:translateX(300%)}}.title-container{display:flex;align-items:center;gap:8px;margin:8px 0 4px;transition:transform .3s ease}.image-card:hover .title-container{transform:translateY(-3px)}.image-card h3{color:var(--text-color);margin:0}.image-card p{color:var(--text-color);transition:transform .3s ease}.image-card:hover p{transform:translateY(-3px)}.year-badge{background:var(--accent);color:#fff;padding:2px 8px;border-radius:12px;font-weight:700}.year-tabs{display:flex;justify-content:center;flex-wrap:wrap;gap:8px;padding:20px;background-color:var(--card-bg);box-shadow:0 2px 5px var(--card-shadow);position:sticky;top:0;z-index:100}.year-tab{border:none;border-radius:20px;background-color:var(--bg-color);color:var(--text-color);cursor:pointer;transition:all .3s ease;border:1px solid var(--text-color)}.year-tab:hover{background-color:var(--text-color);color:var(--bg-color)}.year-tab.active{background-color:var(--text-color);color:var(--bg-color);font-weight:700}body.dark-mode .year-tab{border-color:var(--card-bg)}body.dark-mode .year-tab:hover{background-color:var(--card-bg)}#endMessage,#loader{text-align:center;padding:20px;font-size:1rem;color:var(--text-color)}#loader{display:none}#endMessage{display:none}.back-to-top{position:fixed;bottom:20px;right:20px;background:var(--accent);color:var(--bg-color);border:none;padding:12px;border-radius:50%;cursor:pointer;display:none;box-shadow:0 4px 8px var(--card-shadow);transition:transform .3s;z-index:1000}.back-to-top:hover{transform:scale(1.1)}#floatingTopButton{position:fixed;bottom:30px;right:30px;background-color:#555;border:none;border-radius:50%;width:50px;height:50px;box-shadow:0 2px 6px rgba(0,0,0,.3);cursor:pointer;z-index:999;display:flex;align-items:center;justify-content:center}#floatingTopButton:hover{background-color:#333}.theme-toggle{position:fixed;bottom:20px;left:20px;background:0 0;border:2px solid var(--text-color);border-radius:6px;cursor:pointer;color:var(--text-color);z-index:1000;transition:all .3s}.theme-toggle:hover{background:var(--text-color);color:var(--bg-color)}@media (max-width:480px){.image-card h3{font-size:1.2rem}.image-card p{font-size:1.1rem}.year-badge{font-size:1.1rem}}@media (max-width:768px){.year-tabs{flex-direction:column;align-items:center;gap:0;padding:0;overflow:hidden;max-height:50px;transition:max-height .3s ease}.year-tabs.expanded{max-height:500px}.year-tab{width:100%;border-radius:0;border:none;border-bottom:1px solid var(--card-shadow);text-align:center}.year-tab:first-child{display:none}.year-tabs::before{content:"☰ Filtrar por año";display:block;width:100%;padding:12px 16px;background-color:var(--accent);color:#fff;text-align:center;cursor:pointer;font-weight:700}.year-tabs.expanded::before{content:"✕ Cerrar"}.year-tab.active{background-color:var(--accent);color:#fff;font-weight:700}}@media (max-width:768px){.theme-toggle{bottom:0;left:10px;padding:0 6px 4px 6px}}.lightbox{display:none;position:fixed;z-index:2000;left:0;top:0;width:100%;height:100%;background-color:rgba(0,0,0,.9);justify-content:center;align-items:center;flex-direction:column}.lightbox.show{display:flex}.lightbox-content{max-width:90%;max-height:80vh;object-fit:contain}.lightbox-content{transition:opacity .3s ease,transform .3s ease;transform:scale(.95)}.lightbox-content.loaded{opacity:1;transform:scale(1)}.lightbox-content.fade{opacity:0}.close-btn{position:fixed;top:20px;right:30px;color:#fff;font-size:35px;font-weight:700;cursor:pointer;transition:.3s;z-index:2100;background:rgba(0,0,0,.5);width:40px;height:40px;display:flex;align-items:center;justify-content:center;border-radius:50%}.close-btn:hover{background:var(--accent);transform:rotate(90deg)}.lightbox-caption{color:#fff;text-align:center;padding:10px 0;max-width:80%}.lightbox-title{margin-bottom:8px;color:var(--accent)}.lightbox-description{line-height:1.5;margin:0;padding:0 20px}.lightbox-header{display:flex;align-items:center;justify-content:center;gap:10px;flex-wrap:wrap;margin-bottom:8px}.lightbox-year-badge{background-color:var(--accent);color:#fff;padding:3px 10px;border-radius:12px;font-weight:700;display:inline-block;transform:scale(.9);transition:all .3s ease;opacity:.9;background:linear-gradient(135deg,var(--accent) 0,#ff6b00 100%);box-shadow:0 2px 5px rgba(0,0,0,.2);text-shadow:0 1px 1px rgba(0,0,0,.3);padding:4px 12px;border:1px solid rgba(255,255,255,.2)}.lightbox-title{margin:0 auto;padding:0 30px}body.dark-mode .lightbox-year-badge{background-color:var(--accent);color:var(--text-color)}.lightbox-year-badge:hover{transform:scale(1.05);transition:transform .2s ease}.lightbox-year-badge.pop{animation:popIn .3s ease forwards}@keyframes popIn{0%{transform:scale(.8);opacity:0}80%{transform:scale(1.1)}100%{transform:scale(1);opacity:1}}.lightbox-nav{position:absolute;width:100%;display:flex;justify-content:space-between;padding:0 20px;box-sizing:border-box}.lightbox-nav button{background:0 0;border:none;color:#fff;font-size:50px;cursor:pointer;opacity:.7;transition:opacity .3s}.lightbox-nav button:hover{opacity:1;color:var(--accent)}.lightbox{z-index:2000}@media (max-width:768px){.lightbox-title{font-size:1.2rem}.lightbox-description{font-size:1.1rem}.lightbox-year-badge{font-size:1.1rem}}