@import url('https://fonts.googleapis.com/css2?family=Cinzel:wght@400;600;700&family=Inter:wght@300;400;500;600;700&display=swap');
:root{--bg-deep:#0a0a0c;--bg-panel:#12121a;--bg-card:#1a1a24;--bg-hover:#222230;--accent-gold:#c9a227;--accent-gold-dim:#8a7020;--accent-gold-glow:rgba(201,162,39,0.3);--text-primary:#e8e8e8;--text-secondary:#a0a0a0;--text-muted:#606060;--border-subtle:#2a2a3a;--verified:#2ecc71;--disputed:#f39c12;--speculative:#e74c3c;--font-display:'Cinzel','Georgia',serif;--font-body:'Inter','Segoe UI',system-ui,sans-serif;--transition:all 0.3s cubic-bezier(0.4,0,0.2,1)}
*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth}
body{font-family:var(--font-body);background:var(--bg-deep);color:var(--text-primary);min-height:100vh;line-height:1.6}

/* LOADING */
#loading-screen{position:fixed;inset:0;background:var(--bg-deep);display:flex;align-items:center;justify-content:center;z-index:10000;transition:opacity 0.8s ease,visibility 0.8s ease}
#loading-screen.hidden{opacity:0;visibility:hidden;pointer-events:none}
.loading-content{text-align:center}
.loading-icon{font-size:4rem;color:var(--accent-gold);animation:pulse-glow 2s ease-in-out infinite;margin-bottom:1rem}
.loading-content h1{font-family:var(--font-display);font-size:2.5rem;letter-spacing:0.3em;color:var(--accent-gold);margin-bottom:0.5rem}
.loading-content p{color:var(--text-secondary);font-size:1rem;letter-spacing:0.1em;margin-bottom:2rem}
.loading-bar{width:300px;height:2px;background:var(--border-subtle);margin:0 auto;overflow:hidden;border-radius:1px}
.loading-progress{height:100%;width:0%;background:linear-gradient(90deg,var(--accent-gold),var(--accent-gold-dim));animation:loading-fill 2s ease-out forwards}
@keyframes pulse-glow{0%,100%{opacity:0.6;transform:scale(1)}50%{opacity:1;transform:scale(1.1)}}
@keyframes loading-fill{to{width:100%}}

/* HEADER */
#main-header{position:sticky;top:0;left:0;right:0;height:64px;background:rgba(10,10,12,0.95);backdrop-filter:blur(20px);border-bottom:1px solid var(--border-subtle);display:flex;align-items:center;justify-content:space-between;padding:0 2rem;z-index:1000;transition:var(--transition)}
.logo{display:flex;align-items:center;gap:0.75rem}
.logo-icon{font-size:1.5rem;color:var(--accent-gold)}
.logo-text{font-family:var(--font-display);font-size:1.1rem;font-weight:600;letter-spacing:0.2em;color:var(--accent-gold)}
.main-nav{display:flex;gap:2rem}
.nav-link{font-family:var(--font-display);font-size:0.75rem;letter-spacing:0.15em;text-transform:uppercase;color:var(--text-secondary);text-decoration:none;padding:0.5rem 0;position:relative;transition:var(--transition)}
.nav-link::after{content:'';position:absolute;bottom:0;left:0;width:0;height:1px;background:var(--accent-gold);transition:var(--transition)}
.nav-link:hover,.nav-link.active{color:var(--accent-gold)}
.nav-link:hover::after,.nav-link.active::after{width:100%}
.header-actions{display:flex;gap:0.5rem}
.icon-btn{width:36px;height:36px;border-radius:50%;border:1px solid var(--border-subtle);background:transparent;color:var(--text-secondary);cursor:pointer;display:flex;align-items:center;justify-content:center;font-size:1rem;transition:var(--transition)}
.icon-btn:hover{border-color:var(--accent-gold);color:var(--accent-gold);background:rgba(201,162,39,0.1)}

/* MAIN CONTENT */
#main-content{padding-bottom:48px}
.content-section{display:block;padding:0}
.content-section.hidden{display:none}

/* HERO FEATURED ARTIFACT */
#hero-artifact{display:grid;grid-template-columns:1fr 1fr;min-height:60vh;background:linear-gradient(180deg,var(--bg-deep) 0%,var(--bg-panel) 100%);border-bottom:1px solid var(--border-subtle)}
.hero-image-wrap{position:relative;overflow:hidden;width:100%;height:60vh}
.hero-image-wrap img{width:100%;height:100%;object-fit:cover;transition:transform 0.8s ease;display:block}
.hero-image-wrap:hover img{transform:scale(1.05)}
.hero-info{padding:3rem;display:flex;flex-direction:column;justify-content:center;gap:1rem}
.hero-info h1{font-family:var(--font-display);font-size:2.5rem;color:var(--accent-gold);line-height:1.2;margin-bottom:0.5rem}
.hero-meta{display:flex;gap:0.5rem;flex-wrap:wrap}
.hero-info p{color:var(--text-secondary);font-size:1rem;line-height:1.7;max-width:500px}
.hero-actions{display:flex;gap:0.75rem;flex-wrap:wrap;margin-top:1rem}

/* MASONRY GRID */
#artifact-grid{padding:2rem;max-width:1400px;margin:0 auto}
.grid-header{display:flex;align-items:center;justify-content:space-between;margin-bottom:1.5rem;padding-bottom:1rem;border-bottom:1px solid var(--border-subtle)}
.grid-header h2{font-family:var(--font-display);color:var(--accent-gold);font-size:1.3rem;letter-spacing:0.1em}
.grid-count{color:var(--text-muted);font-size:0.85rem}
.masonry{display:grid;grid-template-columns:repeat(auto-fill,minmax(280px,1fr));gap:1.5rem}
.artifact-card{background:var(--bg-card);border:1px solid var(--border-subtle);border-radius:12px;overflow:hidden;transition:var(--transition);cursor:pointer;position:relative}
.artifact-card:hover{border-color:var(--accent-gold-dim);transform:translateY(-6px);box-shadow:0 15px 40px rgba(0,0,0,0.6)}
.artifact-card .card-image{aspect-ratio:4/3;overflow:hidden;position:relative;width:100%}
.artifact-card .card-image img{width:100%;height:100%;object-fit:cover;transition:transform 0.5s ease;display:block}
.artifact-card:hover .card-image img{transform:scale(1.08)}
.artifact-card .card-image .card-evidence{position:absolute;top:0.75rem;left:0.75rem;z-index:10}
.artifact-card .card-body{padding:1.25rem}
.artifact-card .card-body h3{font-family:var(--font-display);color:var(--accent-gold);font-size:1rem;margin-bottom:0.5rem;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.artifact-card .card-body .card-meta{display:flex;gap:0.5rem;flex-wrap:wrap;margin-bottom:0.75rem}
.artifact-card .card-body p{color:var(--text-muted);font-size:0.8rem;line-height:1.5;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.artifact-card .card-footer{padding:0.75rem 1.25rem;border-top:1px solid var(--border-subtle);display:flex;justify-content:space-between;align-items:center}
.artifact-card .card-footer span{color:var(--text-muted);font-size:0.75rem}
.artifact-card .card-footer .card-action{color:var(--accent-gold);font-size:0.75rem;font-family:var(--font-display);letter-spacing:0.1em}

/* SECTION HEADERS */
.panel-header{padding:2rem 2rem 1rem;max-width:1400px;margin:0 auto}
.panel-header h2{font-family:var(--font-display);color:var(--accent-gold);font-size:1.5rem;margin-bottom:0.5rem}
.panel-header p{color:var(--text-secondary);font-size:0.9rem}

/* BADGES */
.badge{display:inline-flex;align-items:center;gap:0.35rem;padding:0.25rem 0.75rem;border-radius:4px;font-size:0.7rem;font-weight:600;letter-spacing:0.05em;text-transform:uppercase;border:1px solid transparent}
.badge.verified{background:rgba(46,204,113,0.15);color:var(--verified);border-color:rgba(46,204,113,0.3)}
.badge.disputed{background:rgba(243,156,18,0.15);color:var(--disputed);border-color:rgba(243,156,18,0.3)}
.badge.speculative{background:rgba(231,76,60,0.15);color:var(--speculative);border-color:rgba(231,76,60,0.3)}
.badge.large{font-size:0.8rem;padding:0.35rem 1rem}

/* BUTTONS */
.btn-primary,.btn-secondary{padding:0.6rem 1.2rem;border-radius:6px;font-family:var(--font-display);font-size:0.75rem;letter-spacing:0.1em;text-transform:uppercase;cursor:pointer;transition:var(--transition);border:none}
.btn-primary{background:var(--accent-gold);color:var(--bg-deep);font-weight:600}
.btn-primary:hover{background:var(--accent-gold-dim);box-shadow:0 0 20px var(--accent-gold-glow)}
.btn-secondary{background:transparent;color:var(--accent-gold);border:1px solid var(--accent-gold-dim)}
.btn-secondary:hover{background:rgba(201,162,39,0.1);border-color:var(--accent-gold)}
.btn-large{padding:1rem 2rem;font-size:0.85rem}

/* PANELS (search, compare) */
.panel{position:fixed;top:64px;right:0;width:420px;bottom:48px;background:var(--bg-panel);border-left:1px solid var(--border-subtle);z-index:200;overflow-y:auto;transition:var(--transition);padding:1.5rem}
.panel.hidden{transform:translateX(100%)}
.panel-header{display:flex;align-items:center;justify-content:space-between;margin-bottom:1.5rem;padding-bottom:1rem;border-bottom:1px solid var(--border-subtle)}
.panel-header h3{font-family:var(--font-display);color:var(--accent-gold);font-size:1.2rem}
.close-panel{background:none;border:none;color:var(--text-muted);font-size:1.5rem;cursor:pointer;transition:var(--transition);width:32px;height:32px;display:flex;align-items:center;justify-content:center;border-radius:50%}
.close-panel:hover{color:var(--accent-gold);background:rgba(201,162,39,0.1)}

/* SEARCH */
.search-input-wrap{display:flex;gap:0.5rem;margin-bottom:1rem}
#search-input{flex:1;padding:0.75rem 1rem;background:var(--bg-card);border:1px solid var(--border-subtle);border-radius:6px;color:var(--text-primary);font-size:0.9rem;transition:var(--transition)}
#search-input:focus{outline:none;border-color:var(--accent-gold);box-shadow:0 0 0 3px var(--accent-gold-glow)}
#search-input::placeholder{color:var(--text-muted)}
#search-btn{padding:0.75rem 1rem;background:var(--accent-gold);border:none;border-radius:6px;color:var(--bg-deep);cursor:pointer;font-size:1rem;transition:var(--transition)}
#search-btn:hover{background:var(--accent-gold-dim)}
.search-filters{display:flex;gap:0.5rem;margin-bottom:1.5rem;flex-wrap:wrap}
.search-filters select{padding:0.5rem 0.75rem;background:var(--bg-card);border:1px solid var(--border-subtle);border-radius:4px;color:var(--text-primary);font-size:0.8rem;cursor:pointer;transition:var(--transition)}
.search-filters select:focus{outline:none;border-color:var(--accent-gold)}
.results-grid{display:grid;gap:1rem}
.result-card{background:var(--bg-card);border:1px solid var(--border-subtle);border-radius:8px;padding:1rem;cursor:pointer;transition:var(--transition)}
.result-card:hover{border-color:var(--accent-gold-dim);transform:translateX(4px);background:var(--bg-hover)}
.result-card h4{font-family:var(--font-display);color:var(--accent-gold);font-size:1rem;margin-bottom:0.5rem}
.result-card .meta{display:flex;gap:0.5rem;flex-wrap:wrap;margin-bottom:0.5rem}
.result-card p{color:var(--text-secondary);font-size:0.85rem;line-height:1.5}

/* MODAL */
.modal{position:fixed;inset:0;background:rgba(0,0,0,0.85);backdrop-filter:blur(10px);z-index:3000;display:flex;align-items:center;justify-content:center;padding:2rem;transition:var(--transition)}
.modal.hidden{opacity:0;visibility:hidden;pointer-events:none}
.modal-content{background:var(--bg-panel);border:1px solid var(--border-subtle);border-radius:12px;width:100%;max-width:1000px;max-height:90vh;overflow-y:auto;position:relative;animation:modal-enter 0.4s ease}
@keyframes modal-enter{from{opacity:0;transform:scale(0.95) translateY(20px)}to{opacity:1;transform:scale(1) translateY(0)}}
.modal-close{position:absolute;top:1rem;right:1rem;background:none;border:none;color:var(--text-muted);font-size:1.5rem;cursor:pointer;z-index:10;width:36px;height:36px;display:flex;align-items:center;justify-content:center;border-radius:50%;transition:var(--transition)}
.modal-close:hover{color:var(--accent-gold);background:rgba(201,162,39,0.1)}
.modal-body{display:grid;grid-template-columns:1fr 1fr;gap:0}
@media(max-width:768px){.modal-body{grid-template-columns:1fr}}
.modal-gallery{padding:2rem;border-right:1px solid var(--border-subtle);display:flex;flex-direction:column;gap:1rem}
.modal-gallery img{width:100%;border-radius:8px;object-fit:cover;display:block}
.modal-info{padding:2rem}
.modal-info h1{font-family:var(--font-display);font-size:1.8rem;color:var(--accent-gold);margin-bottom:1rem}
.modal-meta{display:flex;flex-wrap:wrap;gap:0.5rem;margin-bottom:1.5rem}
.modal-section{margin-bottom:1.5rem}
.modal-section h3{font-family:var(--font-display);font-size:0.9rem;color:var(--text-secondary);letter-spacing:0.1em;text-transform:uppercase;margin-bottom:0.5rem}
.modal-section p{color:var(--text-primary);font-size:0.9rem;line-height:1.7}
.citation{font-style:italic;color:var(--text-secondary);border-left:2px solid var(--accent-gold-dim);padding-left:1rem}
.connections-grid{display:grid;gap:0.75rem}
.connection-card{background:var(--bg-card);border:1px solid var(--border-subtle);border-radius:6px;padding:0.75rem 1rem;cursor:pointer;transition:var(--transition);display:flex;justify-content:space-between;align-items:center}
.connection-card:hover{border-color:var(--accent-gold-dim);background:var(--bg-hover)}
.connection-card h5{font-family:var(--font-display);color:var(--accent-gold);font-size:0.85rem}
.connection-card span{font-size:0.75rem;color:var(--text-muted)}

/* 3D ROOM OVERLAY */
#room-overlay{position:fixed;inset:0;z-index:500;background:var(--bg-deep);display:flex;flex-direction:column}
#room-overlay.hidden{display:none}
#exhibit-viewport{flex:1;position:relative}
#exhibit-viewport canvas{display:block;width:100%!important;height:100%!important}
.room-controls{position:absolute;top:1rem;left:1rem;right:1rem;display:flex;justify-content:space-between;align-items:center;z-index:100;pointer-events:none}
.room-controls>*{pointer-events:auto}
.viewport-controls{display:flex;gap:0.5rem}
.control-btn{width:40px;height:40px;border-radius:50%;border:1px solid var(--border-subtle);background:rgba(18,18,26,0.8);color:var(--text-secondary);cursor:pointer;display:flex;align-items:center;justify-content:center;font-size:1.1rem;transition:var(--transition);backdrop-filter:blur(5px)}
.control-btn:hover{border-color:var(--accent-gold);color:var(--accent-gold);background:rgba(201,162,39,0.15)}

/* TIMELINE */
#timeline-container{max-width:1200px;margin:0 auto;padding:0 2rem 2rem}
#timeline-track{position:relative;height:120px;background:var(--bg-card);border-radius:8px;margin-bottom:2rem;overflow:hidden}
.timeline-eras{position:absolute;top:0;left:0;right:0;height:80px;display:flex}
.era-marker{position:absolute;top:0;bottom:0;display:flex;flex-direction:column;align-items:center;justify-content:center;cursor:pointer;transition:var(--transition);padding:0 1rem}
.era-marker:hover{background:rgba(201,162,39,0.1)}
.era-marker::before{content:'';position:absolute;top:0;bottom:0;left:0;width:1px;background:var(--border-subtle)}
.era-label{font-family:var(--font-display);font-size:0.75rem;color:var(--text-secondary);letter-spacing:0.1em;text-transform:uppercase}
.era-date{font-size:0.7rem;color:var(--text-muted);margin-top:0.25rem}
#timeline-scrubber{position:absolute;bottom:0;left:0;right:0;height:40px;background:var(--bg-deep);border-top:1px solid var(--border-subtle);cursor:grab}
.scrubber-handle{position:absolute;top:50%;left:50%;transform:translate(-50%,-50%);width:80px;height:24px;background:var(--accent-gold);border-radius:12px;cursor:grab;box-shadow:0 0 15px var(--accent-gold-glow);transition:var(--transition)}
.scrubber-handle:active{cursor:grabbing;transform:translate(-50%,-50%) scale(1.1)}
.artifacts-stream{display:grid;grid-template-columns:repeat(auto-fill,minmax(280px,1fr));gap:1.5rem}

/* MAP */
#map-container{display:grid;grid-template-columns:1fr 300px;gap:2rem;max-width:1200px;margin:0 auto;padding:0 2rem 2rem}
#world-map{background:var(--bg-card);border-radius:12px;overflow:hidden;border:1px solid var(--border-subtle);min-height:500px}
#map-svg{width:100%;height:100%;display:block}
.artifact-marker{fill:var(--accent-gold);filter:url(#pulse);cursor:pointer;transition:var(--transition)}
.artifact-marker:hover{fill:#fff;r:8}
.trade-route{stroke:var(--accent-gold-dim);stroke-width:1;stroke-dasharray:5,5;fill:none;opacity:0.5;animation:dash-flow 2s linear infinite}
@keyframes dash-flow{to{stroke-dashoffset:-10}}
#map-sidebar{background:var(--bg-card);border-radius:12px;border:1px solid var(--border-subtle);padding:1.5rem;overflow-y:auto;min-height:500px}
#map-sidebar h3{font-family:var(--font-display);color:var(--accent-gold);font-size:1rem;margin-bottom:1rem;padding-bottom:0.5rem;border-bottom:1px solid var(--border-subtle)}

/* MYSTERIES */
.mysteries-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(320px,1fr));gap:1.5rem;max-width:1400px;margin:0 auto;padding:0 2rem 2rem}
.mystery-card{background:var(--bg-card);border:1px solid var(--border-subtle);border-radius:12px;overflow:hidden;transition:var(--transition);cursor:pointer}
.mystery-card:hover{border-color:var(--accent-gold-dim);transform:translateY(-4px);box-shadow:0 10px 30px rgba(0,0,0,0.5)}
.mystery-card .card-header{padding:1.5rem;border-bottom:1px solid var(--border-subtle)}
.mystery-card h3{font-family:var(--font-display);color:var(--accent-gold);font-size:1.1rem;margin-bottom:0.5rem}
.mystery-card .card-body{padding:1.5rem}
.mystery-card p{color:var(--text-secondary);font-size:0.9rem;line-height:1.6}
.mystery-card .card-footer{padding:1rem 1.5rem;border-top:1px solid var(--border-subtle);display:flex;justify-content:space-between;align-items:center}

/* SUBMISSION FORM */
.submission-form{max-width:700px;margin:0 auto;padding:0 2rem 2rem}
.form-row{display:grid;grid-template-columns:1fr 1fr;gap:1rem;margin-bottom:1rem}
@media(max-width:600px){.form-row{grid-template-columns:1fr}}
.form-group{margin-bottom:1.25rem}
.form-group label{display:block;font-family:var(--font-display);font-size:0.8rem;letter-spacing:0.1em;text-transform:uppercase;color:var(--text-secondary);margin-bottom:0.5rem}
.form-group input,.form-group textarea,.form-group select{width:100%;padding:0.75rem 1rem;background:var(--bg-card);border:1px solid var(--border-subtle);border-radius:6px;color:var(--text-primary);font-size:0.9rem;transition:var(--transition);font-family:var(--font-body)}
.form-group input:focus,.form-group textarea:focus,.form-group select:focus{outline:none;border-color:var(--accent-gold);box-shadow:0 0 0 3px var(--accent-gold-glow)}
.form-group input::placeholder,.form-group textarea::placeholder{color:var(--text-muted)}
.form-group small{display:block;margin-top:0.35rem;color:var(--text-muted);font-size:0.75rem}
.evidence-selector{display:grid;gap:0.75rem}
.evidence-option{display:flex;align-items:center;gap:0.75rem;padding:1rem;background:var(--bg-card);border:1px solid var(--border-subtle);border-radius:8px;cursor:pointer;transition:var(--transition)}
.evidence-option:hover{border-color:var(--accent-gold-dim);background:var(--bg-hover)}
.evidence-option input{display:none}
.evidence-dot{width:16px;height:16px;border-radius:50%;border:2px solid var(--border-subtle);transition:var(--transition);flex-shrink:0}
.evidence-option.verified .evidence-dot{border-color:var(--verified)}
.evidence-option.disputed .evidence-dot{border-color:var(--disputed)}
.evidence-option.speculative .evidence-dot{border-color:var(--speculative)}
.evidence-option input:checked+.evidence-dot{background:currentColor;box-shadow:0 0 10px currentColor}
.evidence-option.verified input:checked+.evidence-dot{background:var(--verified)}
.evidence-option.disputed input:checked+.evidence-dot{background:var(--disputed)}
.evidence-option.speculative input:checked+.evidence-dot{background:var(--speculative)}
.evidence-label{font-family:var(--font-display);font-size:0.8rem;letter-spacing:0.1em;color:var(--text-primary);min-width:100px}
.evidence-desc{font-size:0.8rem;color:var(--text-muted)}
#submission-status{margin-top:1rem;padding:1rem;border-radius:6px;font-size:0.9rem;display:none}
#submission-status.success{display:block;background:rgba(46,204,113,0.15);border:1px solid var(--verified);color:var(--verified)}
#submission-status.error{display:block;background:rgba(231,76,60,0.15);border:1px solid var(--speculative);color:var(--speculative)}

/* COMPARATIVE */
.compare-slots{display:grid;grid-template-columns:1fr auto 1fr;gap:1rem;align-items:center;margin-bottom:1.5rem}
.compare-slot{background:var(--bg-card);border:2px dashed var(--border-subtle);border-radius:12px;min-height:200px;display:flex;align-items:center;justify-content:center;transition:var(--transition)}
.compare-slot.filled{border-style:solid;border-color:var(--accent-gold-dim)}
.slot-placeholder{color:var(--text-muted);font-size:0.9rem;text-align:center}
.compare-vs{font-family:var(--font-display);font-size:1.2rem;color:var(--accent-gold)}
.compare-analysis{background:var(--bg-card);border:1px solid var(--border-subtle);border-radius:8px;padding:1.5rem}

/* FOOTER */
#main-footer{position:fixed;bottom:0;left:0;right:0;height:48px;background:rgba(10,10,12,0.95);backdrop-filter:blur(20px);border-top:1px solid var(--border-subtle);display:flex;align-items:center;justify-content:space-between;padding:0 2rem;z-index:1000;font-size:0.75rem}
.footer-left{display:flex;align-items:center;gap:0.5rem;color:var(--accent-gold);font-family:var(--font-display);letter-spacing:0.1em}
.footer-center{color:var(--text-muted);letter-spacing:0.05em}
.footer-right{display:flex;align-items:center;gap:0.75rem;color:var(--text-muted)}

/* SCROLLBAR */
::-webkit-scrollbar{width:6px}
::-webkit-scrollbar-track{background:var(--bg-deep)}
::-webkit-scrollbar-thumb{background:var(--border-subtle);border-radius:3px}
::-webkit-scrollbar-thumb:hover{background:var(--accent-gold-dim)}

/* RESPONSIVE */
@media(max-width:768px){
#main-header{padding:0 1rem}
.main-nav{display:none}
#hero-artifact{grid-template-columns:1fr;min-height:auto}
.hero-image-wrap{height:40vh}
.hero-info{padding:1.5rem}
.masonry{grid-template-columns:1fr}
#map-container{grid-template-columns:1fr}
.modal-content{max-height:100vh;border-radius:0}
.panel{width:100%}
.compare-slots{grid-template-columns:1fr}
.compare-vs{text-align:center}
}