*,*:before,*:after{box-sizing:border-box;margin:0;padding:0}:root{--bg: #1a1a2e;--bg-panel: #16213e;--bg-toolbar: rgba(22, 33, 62, .95);--text: #e0e0e0;--text-muted: #8892a4;--accent: #0f3460;--accent-light: #1a73e8;--border: #2a3a5c;--radius: 6px}html,body,#root{height:100%;width:100%;overflow:hidden}body{font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,sans-serif;background:var(--bg);color:var(--text);-webkit-font-smoothing:antialiased}.app-container{display:flex;flex-direction:column;height:100vh;width:100vw;overflow:hidden;position:relative;background:var(--bg)}.main-layout{display:flex;flex:1;overflow:hidden;padding-bottom:56px}.viewer-area{flex:1;display:flex;align-items:center;justify-content:center;overflow:auto;padding:16px;transition:transform .2s ease}.flipbook-container{display:flex;align-items:center;justify-content:center;width:100%;height:100%}.page{background:#fff;overflow:hidden}.page img{width:100%;height:100%;object-fit:contain;display:block;-webkit-user-select:none;user-select:none;-webkit-user-drag:none}.toolbar{position:fixed;bottom:0;left:0;right:0;height:56px;background:var(--bg-toolbar);-webkit-backdrop-filter:blur(12px);backdrop-filter:blur(12px);border-top:1px solid var(--border);display:flex;align-items:center;justify-content:center;gap:24px;padding:0 16px;z-index:100}.toolbar-group{display:flex;align-items:center;gap:4px}.toolbar button{background:transparent;border:1px solid transparent;color:var(--text);width:40px;height:40px;border-radius:var(--radius);cursor:pointer;font-size:16px;display:flex;align-items:center;justify-content:center;transition:all .15s}.toolbar button:hover{background:var(--accent);border-color:var(--border)}.toolbar button:active{transform:scale(.95)}.zoom-label{font-size:12px!important;width:auto!important;padding:0 8px!important;min-width:52px;font-variant-numeric:tabular-nums}.page-input-form{display:flex;align-items:center;gap:4px}.page-input{width:48px;height:32px;background:var(--accent);border:1px solid var(--border);border-radius:var(--radius);color:var(--text);text-align:center;font-size:13px;outline:none;font-variant-numeric:tabular-nums}.page-input:focus{border-color:var(--accent-light)}.page-total{color:var(--text-muted);font-size:13px;font-variant-numeric:tabular-nums}.thumbnail-panel{width:160px;min-width:160px;background:var(--bg-panel);border-right:1px solid var(--border);overflow-y:auto;overflow-x:hidden}.thumbnail-list{display:flex;flex-direction:column;gap:8px;padding:12px 8px}.thumbnail-item{background:transparent;border:2px solid transparent;border-radius:var(--radius);cursor:pointer;padding:4px;display:flex;flex-direction:column;align-items:center;gap:4px;transition:all .15s}.thumbnail-item:hover{background:var(--accent)}.thumbnail-item.active{border-color:var(--accent-light);background:var(--accent)}.thumbnail-item img{width:100%;border-radius:3px;display:block}.thumbnail-label{font-size:11px;color:var(--text-muted)}.thumbnail-toggle{position:fixed;top:12px;left:12px;width:40px;height:40px;background:var(--bg-toolbar);-webkit-backdrop-filter:blur(12px);backdrop-filter:blur(12px);border:1px solid var(--border);border-radius:var(--radius);color:var(--text);cursor:pointer;font-size:18px;display:flex;align-items:center;justify-content:center;z-index:200;transition:all .15s}.thumbnail-toggle:hover{background:var(--accent)}.loading-screen{position:fixed;inset:0;background:var(--bg);display:flex;align-items:center;justify-content:center;z-index:1000}.loading-content{text-align:center;max-width:320px}.loading-spinner{width:48px;height:48px;border:3px solid var(--border);border-top-color:var(--accent-light);border-radius:50%;margin:0 auto 16px;animation:spin .8s linear infinite}@keyframes spin{to{transform:rotate(360deg)}}.loading-text{font-size:16px;margin-bottom:16px}.progress-bar{width:100%;height:4px;background:var(--accent);border-radius:2px;overflow:hidden;margin-bottom:8px}.progress-fill{height:100%;background:var(--accent-light);border-radius:2px;transition:width .3s ease}.loading-detail{font-size:13px;color:var(--text-muted)}.loading-error{font-size:18px;margin-bottom:12px;color:#e74c3c}.app-container:fullscreen{background:var(--bg)}.app-container:fullscreen .main-layout{height:100vh}@media(max-width:768px){.thumbnail-panel{width:120px;min-width:120px}.toolbar{gap:8px}.toolbar button{width:36px;height:36px;font-size:14px}.viewer-area{padding:8px}}@media(max-width:480px){.thumbnail-panel{position:fixed;left:0;top:0;bottom:56px;z-index:150;width:140px;box-shadow:4px 0 12px #0000004d}}