@layer base{:root{--bg-dark: #0d1117;--bg-card: rgba(22, 27, 34, .85);--bg-glass: rgba(15, 23, 42, .75);--border-glass: rgba(255, 255, 255, .12);--accent-primary: #3b82f6;--accent-glow: rgba(59, 130, 246, .35);--text-main: #f3f4f6;--text-muted: #9ca3af;--font-heading: "Outfit", sans-serif;--font-body: "Plus Jakarta Sans", sans-serif}*{box-sizing:border-box;margin:0;padding:0}body{background-color:var(--bg-dark);background-image:radial-gradient(at 0% 0%,rgba(30,58,138,.25) 0px,transparent 50%),radial-gradient(at 100% 100%,rgba(17,24,39,.8) 0px,transparent 50%),radial-gradient(at 50% 50%,rgba(15,23,42,.9) 0px,transparent 100%);background-attachment:fixed;color:var(--text-main);font-family:var(--font-body);min-height:100vh;overflow-x:hidden;user-select:none;-webkit-user-select:none}}.app-container{display:flex;flex-direction:column;height:100vh;width:100vw;overflow:hidden;position:relative}.app-header{height:60px;padding:0 1.5rem;display:flex;align-items:center;justify-content:space-between;background:var(--bg-glass);backdrop-filter:blur(12px);-webkit-backdrop-filter:blur(12px);border-bottom:1px solid var(--border-glass);z-index:40}.brand-title{display:flex;align-items:center;gap:.75rem;font-family:var(--font-heading);font-size:1.25rem;font-weight:700;color:#fff;letter-spacing:-.01em}.brand-badge{font-size:.7rem;padding:.2rem .6rem;border-radius:9999px;background:#3b82f633;color:#60a5fa;border:1px solid rgba(96,165,250,.3);font-weight:600;text-transform:uppercase;letter-spacing:.05em}.viewport-area{flex:1;display:flex;align-items:center;justify-content:center;position:relative;overflow:hidden;padding:1.5rem;touch-action:none}.flipbook-stage{display:flex;align-items:center;justify-content:center;transition:transform .2s cubic-bezier(.16,1,.3,1);transform-origin:center center}.stpageflip-container{box-shadow:0 25px 50px -12px #000000bf,0 0 40px #00000080;border-radius:4px}.page-container{background-color:#fff;width:100%;height:100%;overflow:hidden;position:relative;box-shadow:inset 0 0 10px #0000001a}.page-container img{width:100%;height:100%;object-fit:fill;display:block;pointer-events:none}.page-cover{background-color:#111827;display:flex;align-items:center;justify-content:center}.page-cover img{width:100%;height:100%;object-fit:cover}.page-left-shadow{position:absolute;top:0;right:0;bottom:0;width:25px;background:linear-gradient(to right,#0000,#0000002e);pointer-events:none;z-index:5}.page-right-shadow{position:absolute;top:0;left:0;bottom:0;width:25px;background:linear-gradient(to left,#0000,#0000002e);pointer-events:none;z-index:5}.toolbar-container{position:absolute;bottom:1.5rem;left:50%;transform:translate(-50%);background:var(--bg-glass);backdrop-filter:blur(16px);-webkit-backdrop-filter:blur(16px);border:1px solid var(--border-glass);padding:.6rem 1.2rem;border-radius:9999px;display:flex;align-items:center;gap:1.25rem;box-shadow:0 20px 25px -5px #00000080,0 8px 10px -6px #0006;z-index:30;max-width:92vw}.toolbar-group{display:flex;align-items:center;gap:.5rem}.toolbar-divider{width:1px;height:24px;background:var(--border-glass)}.btn-icon{background:transparent;border:none;color:var(--text-muted);width:36px;height:36px;border-radius:50%;display:flex;align-items:center;justify-content:center;cursor:pointer;transition:all .18s ease}.btn-icon:hover{color:var(--text-main);background:#ffffff1a}.btn-icon:disabled{opacity:.35;cursor:not-allowed}.btn-icon.active{color:#fff;background:var(--accent-primary);box-shadow:0 0 12px var(--accent-glow)}.scrubber-container{display:flex;align-items:center;gap:.75rem;min-width:160px}.scrubber-range{-webkit-appearance:none;-moz-appearance:none;appearance:none;width:100%;height:5px;border-radius:5px;background:#fff3;outline:none;cursor:pointer}.scrubber-range::-webkit-slider-thumb{-webkit-appearance:none;-moz-appearance:none;appearance:none;width:14px;height:14px;border-radius:50%;background:var(--accent-primary);box-shadow:0 0 8px var(--accent-glow);cursor:pointer;transition:transform .15s ease}.scrubber-range::-webkit-slider-thumb:hover{transform:scale(1.25)}.page-indicator{font-size:.85rem;font-weight:600;color:var(--text-main);white-space:nowrap;font-variant-numeric:tabular-nums;display:flex;align-items:center;gap:.3rem}.page-input{width:44px;background:#0006;border:1px solid var(--border-glass);border-radius:6px;color:var(--text-main);font-family:inherit;font-size:.85rem;text-align:center;padding:.15rem .25rem;font-weight:600}.page-input:focus{outline:none;border-color:var(--accent-primary);box-shadow:0 0 6px var(--accent-glow)}.thumbnail-modal{position:fixed;top:0;right:0;bottom:0;left:0;background:#000000d9;backdrop-filter:blur(8px);-webkit-backdrop-filter:blur(8px);z-index:50;display:flex;flex-direction:column;animation:fadeIn .25s ease}.thumbnail-header{padding:1.25rem 2rem;display:flex;align-items:center;justify-content:space-between;border-bottom:1px solid var(--border-glass)}.thumbnail-grid{flex:1;overflow-y:auto;padding:2rem;display:grid;grid-template-columns:repeat(auto-fill,minmax(130px,1fr));gap:1.5rem}.thumbnail-card{background:var(--bg-card);border:1px solid var(--border-glass);border-radius:8px;overflow:hidden;cursor:pointer;transition:all .2s ease;display:flex;flex-direction:column;align-items:center}.thumbnail-card:hover{transform:translateY(-4px);border-color:var(--accent-primary);box-shadow:0 10px 20px #00000080,0 0 15px var(--accent-glow)}.thumbnail-card.active{border-color:var(--accent-primary);ring:2px solid var(--accent-primary);box-shadow:0 0 15px var(--accent-glow)}.thumbnail-img-wrapper{width:100%;aspect-ratio:3 / 4;overflow:hidden;background:#1e293b}.thumbnail-img-wrapper img{width:100%;height:100%;object-fit:cover}.thumbnail-label{padding:.4rem;font-size:.75rem;font-weight:600;color:var(--text-muted)}@keyframes fadeIn{0%{opacity:0}to{opacity:1}}::-webkit-scrollbar{width:8px;height:8px}::-webkit-scrollbar-track{background:#0003}::-webkit-scrollbar-thumb{background:#fff3;border-radius:4px}::-webkit-scrollbar-thumb:hover{background:#fff6}@media (max-width: 640px){.toolbar-container{padding:.4rem .75rem;gap:.4rem;bottom:.75rem;max-width:96vw}.hide-mobile-sm{display:none!important}.scrubber-container{min-width:90px;gap:.4rem}.btn-icon{width:32px;height:32px}.page-input{width:36px;font-size:.75rem}.page-indicator{font-size:.75rem}.thumbnail-grid{grid-template-columns:repeat(auto-fill,minmax(95px,1fr));gap:.75rem;padding:1rem}}