:root{color-scheme:light;--bg: #eef3f8;--bg-soft: #f8fbff;--surface: #ffffff;--surface-soft: #f4f8fc;--text: #1f2a36;--muted: #5a6978;--primary: #0d5d8f;--primary-strong: #0b4b74;--border: #d5e0eb;--danger: #b73939;--ok: #1f7a39;--warning: #8f620d}*{box-sizing:border-box}body{margin:0;font-family:Trebuchet MS,Gill Sans,Avenir Next,sans-serif;color:var(--text);background:radial-gradient(circle at top right,#dceeff 0%,var(--bg) 42%,#e8eef6 100%)}a{color:inherit}h1,h2,h3{margin:0;font-family:Palatino Linotype,Book Antiqua,Palatino,serif}p{margin:0}.centered{min-height:100vh;display:grid;place-content:center}.app-shell{min-height:100vh;display:flex;flex-direction:column}.topbar{min-height:64px;display:flex;align-items:center;justify-content:space-between;padding:10px 20px;background:linear-gradient(135deg,#f8fbff,#eef5fd);border-bottom:1px solid var(--border);position:sticky;top:0;z-index:10}.brand{font-weight:800;letter-spacing:.02em;text-decoration:none;color:var(--primary-strong)}.topbar-right{display:flex;align-items:center;gap:10px}.nav-link-btn{text-decoration:none}.user-label{color:var(--muted);font-size:.88rem}.main-content{flex:1;width:min(1280px,100%);margin:0 auto;padding:20px}.btn{border:0;border-radius:10px;padding:9px 14px;font-weight:700;cursor:pointer;transition:transform .12s ease,filter .12s ease}.btn:hover{filter:brightness(.98)}.btn:active{transform:translateY(1px)}.btn:disabled{opacity:.6;cursor:not-allowed}.btn.primary{background:var(--primary);color:#fff}.btn.primary:hover{background:var(--primary-strong)}.btn.secondary{background:#e6edf5;color:var(--text)}.btn.danger{background:#fbe7e7;color:var(--danger)}.btn.danger.strong{background:#f5d5d5}.login-page{min-height:100vh;display:grid;place-content:center;padding:24px}.login-card{width:min(460px,100%);background:var(--surface);border:1px solid var(--border);border-radius:18px;padding:28px;display:grid;gap:10px;box-shadow:0 24px 50px #0736631a}.google-button{margin-top:12px}.error-text{color:var(--danger);margin-top:8px}.muted{color:var(--muted)}.library-page{display:grid;gap:14px}.stats-row{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:12px}.stat-card{background:var(--surface);border:1px solid var(--border);border-radius:12px;padding:12px;display:grid;gap:4px}.stat-label{color:var(--muted);font-size:.82rem}.library-toolbar{display:flex;justify-content:space-between;align-items:center;gap:10px}.library-toolbar input{width:min(520px,100%);border:1px solid var(--border);border-radius:10px;padding:10px 12px;background:#fff}.book-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(230px,1fr));gap:14px}.book-card{background:var(--surface);border:1px solid var(--border);border-radius:14px;padding:12px;display:grid;gap:8px}.book-cover-wrap{aspect-ratio:3 / 4;border-radius:10px;overflow:hidden;background:#ecf2f8}.book-cover{width:100%;height:100%;object-fit:cover}.book-cover-fallback{width:100%;height:100%;display:grid;place-content:center;font-weight:700;color:#55708b}.book-category{color:var(--muted);font-size:.88rem}.tag-list{display:flex;flex-wrap:wrap;gap:6px}.tag-list span{font-size:.74rem;border:1px solid var(--border);border-radius:999px;padding:3px 8px;color:var(--muted);background:var(--surface-soft)}.admin-page{display:grid;gap:14px}.admin-header{display:flex;justify-content:space-between;align-items:flex-start;gap:12px}.admin-stats{display:flex;gap:8px;flex-wrap:wrap}.pill{background:#e7eef7;color:#22384f;border-radius:999px;padding:5px 10px;font-size:.78rem;font-weight:700}.pill.success{background:#e5f5ea;color:var(--ok)}.pill.warning{background:#f9edd9;color:var(--warning)}.admin-message{margin:0;color:var(--ok)}.admin-create-card,.admin-catalog-card{background:var(--surface);border:1px solid var(--border);border-radius:14px;padding:12px;display:grid;gap:10px}.admin-grid{display:grid;grid-template-columns:repeat(4,minmax(0,1fr));gap:8px}.admin-field{display:grid;gap:5px;color:var(--muted);font-size:.82rem}.admin-field input{border:1px solid var(--border);border-radius:8px;padding:8px;color:var(--text)}.checkbox-inline{display:flex;align-items:center;gap:8px;color:var(--muted)}.admin-toolbar{display:flex;justify-content:space-between;align-items:center;gap:10px}.admin-toolbar input{width:min(520px,100%);border:1px solid var(--border);border-radius:10px;padding:9px}.admin-table-wrap{overflow:auto}.admin-table{width:100%;min-width:1060px;border-collapse:collapse}.admin-table th,.admin-table td{border-bottom:1px solid var(--border);padding:8px;vertical-align:middle}.admin-table th{text-align:left;background:#f0f6fc;font-size:.82rem;color:#3f556a}.admin-table td input[type=text],.admin-table td input:not([type]),.admin-table td code{width:100%}.admin-table td input[type=text],.admin-table td input:not([type]){border:1px solid var(--border);border-radius:8px;padding:7px}.admin-table td code{font-size:.75rem;color:#36516a;background:#eef4fa;padding:3px 6px;border-radius:6px;display:inline-block}.row-inactive{background:#fafbfd}.admin-status-toggle{display:flex;align-items:center;gap:6px}.status{font-size:.75rem;font-weight:700}.status.active{color:var(--ok)}.status.inactive{color:#778796}.admin-actions{display:flex;flex-wrap:wrap;gap:6px}.reader-page{display:grid;grid-template-columns:360px minmax(0,1fr);gap:16px;min-height:calc(100vh - 110px)}.reading-focus .reader-sidebar,.reading-focus .reader-main{background:var(--surface);border:1px solid var(--border);border-radius:16px}.reader-sidebar{padding:14px;display:grid;gap:12px;align-content:start;max-height:calc(100vh - 126px);overflow:auto}.reader-header{display:grid;gap:8px}.reader-main-top{display:grid;gap:10px}.reader-title-row{display:flex;align-items:baseline;justify-content:space-between;gap:8px;flex-wrap:wrap}.reader-progress-label{font-size:.88rem}.back-link{color:var(--primary);text-decoration:none;font-weight:700}.progress-track{width:100%;height:8px;background:#e5edf6;border-radius:999px;overflow:hidden}.progress-track span{display:block;height:100%;background:linear-gradient(90deg,#2f8ccc,var(--primary))}.reader-icon-toolbar{display:flex;gap:8px;align-items:center}.icon-btn{width:42px;height:42px;border:1px solid #d5e0eb;border-radius:11px;background:#edf4fb;color:#14344c;display:inline-flex;align-items:center;justify-content:center;cursor:pointer;transition:transform .12s ease,filter .12s ease}.icon-btn:hover{filter:brightness(.98)}.icon-btn:active{transform:translateY(1px)}.icon-btn:focus-visible{outline:2px solid var(--primary);outline-offset:1px}.icon-btn.primary{background:var(--primary);border-color:var(--primary);color:#fff}.icon-btn:disabled{opacity:.6;cursor:not-allowed}.icon-btn span{font-size:1.06rem;font-weight:800}.reader-section.is-first{padding-top:0;border-top:0}.reader-section{display:grid;gap:8px;padding-top:8px;border-top:1px solid var(--border)}.reader-section-head{display:flex;justify-content:space-between;align-items:baseline;gap:8px}.reader-section-meta{display:flex;align-items:center;gap:8px}.reader-section-panel{display:grid;gap:8px}.reader-collapse-toggle{width:34px;height:34px;border:1px solid #d5e0eb;border-radius:10px;background:#edf4fb;color:#1c3f5a;display:inline-flex;align-items:center;justify-content:center;cursor:pointer}.reader-collapse-toggle span{font-size:.95rem;font-weight:800;transition:transform .12s ease}.reader-collapse-toggle.is-open span{transform:rotate(180deg)}.search-box{display:grid;grid-template-columns:1fr auto;gap:8px}.search-box input{border:1px solid var(--border);border-radius:10px;padding:9px}.reader-inline-note{color:var(--muted);font-size:.86rem}.result-list,.bookmark-list{max-height:210px;overflow:auto;display:grid;gap:6px}.toc-list{max-height:240px;overflow:auto;display:grid;gap:6px}.link-row{border:1px solid #e2e9f1;background:#f8fbff;border-radius:8px;text-align:left;width:100%;padding:8px;cursor:pointer;display:grid;gap:2px}.toc-row span{display:block}.link-row strong{font-size:.76rem;color:#4a6176}.link-row span{font-size:.87rem;color:#263848}.bookmark-item{display:grid;grid-template-columns:1fr auto;gap:8px}.danger-link{border:0;background:transparent;color:var(--danger);cursor:pointer}.reader-main{display:grid;grid-template-rows:auto minmax(0,1fr);gap:8px;padding:12px}.reader-hint{color:var(--muted);font-size:.86rem}.viewer-wrap{position:relative;border-radius:12px;border:1px solid var(--border);overflow:hidden;background:var(--bg-soft)}.epub-viewer{width:100%;height:100%;min-height:76vh}.watermark{position:absolute;right:10px;bottom:10px;background:#ffffffd1;border-radius:8px;padding:4px 8px;color:#516476;font-size:.72rem;pointer-events:none}@media(max-width:1180px){.admin-grid{grid-template-columns:repeat(2,minmax(0,1fr))}}@media(max-width:980px){.stats-row{grid-template-columns:repeat(2,minmax(0,1fr))}.reader-page{grid-template-columns:1fr}.reader-main{order:1}.reader-sidebar{order:2;max-height:none}.reader-icon-toolbar{overflow-x:auto;padding-bottom:3px}.reader-section-head{align-items:center}.result-list,.bookmark-list,.toc-list{max-height:none}.epub-viewer{min-height:68vh}}@media(max-width:680px){.topbar{flex-wrap:wrap;gap:8px}.main-content{padding:12px}.stats-row{grid-template-columns:1fr}.library-toolbar,.admin-toolbar,.admin-header{flex-direction:column;align-items:stretch}.admin-grid,.search-box{grid-template-columns:1fr}.reader-title-row{align-items:flex-start;flex-direction:column}.reader-icon-toolbar{justify-content:space-between}.icon-btn{width:44px;height:44px}}