:root{color-scheme:dark;--bg: #1a1410;--bg-elevated: #241c16;--bg-card: #2d231b;--wood: #5c3d2e;--wood-light: #7a523d;--wood-shadow: #2f1f17;--text: #f4ece3;--text-muted: #c9b8a8;--accent: #d4a574;--accent-strong: #e8bc8a;--danger: #c96a6a;--border: rgba(255, 255, 255, .08);--radius: 16px;--shadow: 0 18px 50px rgba(0, 0, 0, .35);font-family:"Source Sans 3",system-ui,sans-serif;line-height:1.5;font-weight:400;color:var(--text);background:radial-gradient(circle at top,rgba(212,165,116,.12),transparent 40%),linear-gradient(180deg,#120e0b 0%,var(--bg) 100%);font-synthesis:none;text-rendering:optimizeLegibility;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale}*{box-sizing:border-box}body{margin:0;min-width:320px;min-height:100vh}a{color:inherit;text-decoration:none}button,input{font:inherit}h1,h2,h3{font-family:Cormorant Garamond,Georgia,serif;font-weight:600;line-height:1.1;margin:0}p{margin:0}.app-shell{min-height:100vh}.app-header{display:flex;align-items:center;justify-content:space-between;gap:1rem;padding:1.25rem 1.5rem;border-bottom:1px solid var(--border);-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px);position:sticky;top:0;z-index:10;background:#1a1410d9}.brand{display:flex;align-items:center;gap:.85rem}.brand-mark{font-size:1.75rem}.brand-title{font-family:Cormorant Garamond,Georgia,serif;font-size:1.5rem;font-weight:700}.brand-subtitle{color:var(--text-muted);font-size:.9rem}.app-nav{display:flex;gap:.75rem}.app-nav a{padding:.55rem .9rem;border-radius:999px;color:var(--text-muted);transition:background .2s ease,color .2s ease}.app-nav a:hover,.app-nav a.active{background:#d4a57424;color:var(--accent-strong)}.sync-banner{text-align:center;padding:.65rem 1rem;color:var(--text-muted);font-size:.9rem;border-bottom:1px solid var(--border)}.app-main,.welcome-shell,.import-page{width:min(1100px,calc(100% - 2rem));margin:0 auto;padding:2rem 0 3rem}.home-hero{margin-bottom:2rem}.home-hero h1{font-size:clamp(2.5rem,5vw,3.75rem);margin-bottom:.5rem}.home-hero p{color:var(--text-muted);font-size:1.05rem;max-width:42rem}.home-hero__link{display:inline-block;margin-top:1rem;color:var(--accent-strong)}.home-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(280px,1fr));gap:1.25rem}.bookshelf-card{display:flex;flex-direction:column;gap:1rem;padding:1.25rem;border-radius:var(--radius);background:linear-gradient(180deg,rgba(255,255,255,.03),transparent),var(--bg-card);border:1px solid var(--border);box-shadow:var(--shadow);transition:transform .2s ease,border-color .2s ease}.bookshelf-card:hover{transform:translateY(-3px);border-color:#d4a57440}.bookshelf-card__header{display:flex;justify-content:space-between;gap:1rem}.bookshelf-card__header h2{font-size:1.75rem}.bookshelf-card__header p{color:var(--text-muted);margin-top:.25rem}.bookshelf-card__count{align-self:start;padding:.35rem .65rem;border-radius:999px;background:#d4a5741f;color:var(--accent-strong);font-size:.85rem;white-space:nowrap}.bookshelf-card__preview{position:relative;min-height:120px;padding:1rem .75rem .5rem}.bookshelf-card__books{display:flex;gap:.45rem;align-items:flex-end;min-height:88px;overflow-x:auto;padding-bottom:.35rem}.bookshelf-card__plank{height:12px;border-radius:3px;background:linear-gradient(180deg,var(--wood-light),var(--wood));box-shadow:0 6px 12px var(--wood-shadow)}.bookshelf-card__cta{color:var(--accent-strong);font-size:.95rem}.shelf-page__header{margin:1rem 0 1.5rem}.shelf-page__header h1{font-size:clamp(2rem,4vw,3rem)}.shelf-page__header p{color:var(--text-muted);margin-top:.35rem}.shelf-page__count{display:inline-block;margin-top:.75rem;color:var(--accent-strong)}.back-link{color:var(--text-muted)}.back-link:hover{color:var(--accent-strong)}.import-panel,.import-page__danger{background:var(--bg-elevated);border:1px solid var(--border);border-radius:var(--radius);padding:1.5rem;box-shadow:var(--shadow)}.import-panel__welcome h1,.import-panel__header h1{font-size:clamp(2rem,4vw,2.75rem);margin-bottom:.5rem}.import-panel__welcome p,.import-panel__header p{color:var(--text-muted)}.import-panel__steps{margin:1.25rem 0;padding-left:1.25rem;color:var(--text-muted)}.import-panel__dropzone{margin-top:1rem;padding:2.5rem 1.5rem;border:2px dashed rgba(212,165,116,.35);border-radius:var(--radius);text-align:center;cursor:pointer;transition:border-color .2s ease,background .2s ease}.import-panel__dropzone:hover,.import-panel__dropzone.is-dragging{border-color:var(--accent);background:#d4a5740f}.import-panel__dropzone-title{font-size:1.1rem;font-weight:600}.import-panel__dropzone-subtitle{color:var(--text-muted);margin-top:.35rem}.import-panel__error{margin-top:1rem;color:var(--danger)}.import-panel__progress{margin-top:1rem;color:var(--accent-strong)}.import-page__danger{margin-top:1.5rem}.import-page__danger h2{font-size:1.5rem;margin-bottom:.35rem}.import-page__danger p{color:var(--text-muted);margin-bottom:1rem}.button{border:none;border-radius:999px;padding:.7rem 1.1rem;cursor:pointer;transition:opacity .2s ease,transform .2s ease}.button:hover{transform:translateY(-1px)}.button:disabled{opacity:.6;cursor:not-allowed}.button--primary{background:linear-gradient(180deg,var(--accent-strong),var(--accent));color:#2b1d12;font-weight:600}.button--ghost{background:transparent;color:var(--text-muted);border:1px solid var(--border)}.button--danger{background:#c96a6a26;color:#ffb4b4;border:1px solid rgba(201,106,106,.35)}.sync-summary{margin-top:1.5rem;padding-top:1.5rem;border-top:1px solid var(--border)}.sync-summary h3{font-size:1.5rem;margin-bottom:.75rem}.sync-summary__stats{display:flex;flex-wrap:wrap;gap:.75rem 1.25rem;list-style:none;padding:0;margin:0 0 1rem}.sync-summary__stats strong{color:var(--accent-strong)}.sync-summary__table{width:100%;border-collapse:collapse;margin-bottom:1rem}.sync-summary__table th,.sync-summary__table td{text-align:left;padding:.55rem .35rem;border-bottom:1px solid var(--border)}.sync-summary__details{margin-bottom:.75rem;color:var(--text-muted)}.sync-summary__details ul{margin:.5rem 0 0;padding-left:1.1rem}.sync-summary__no-changes{color:var(--text-muted);margin-bottom:1rem}.sync-summary__actions{display:flex;gap:.75rem;justify-content:flex-end}.empty-shelf{color:var(--text-muted);padding:2rem 0}@media(max-width:640px){.app-header{flex-direction:column;align-items:flex-start}.app-main,.welcome-shell,.import-page{width:min(100% - 1rem,1100px)}}.bookshelf{display:flex;flex-direction:column;gap:2rem}.bookshelf__row{position:relative}.bookshelf__books{display:flex;gap:.65rem;align-items:flex-end;overflow-x:auto;padding:.5rem .25rem 1rem;scrollbar-width:thin}.bookshelf__plank{height:18px;border-radius:4px;background:linear-gradient(180deg,rgba(255,255,255,.08),transparent 35%),linear-gradient(180deg,#8b5e47,#4a3024);box-shadow:0 10px 20px #00000059,inset 0 1px #ffffff14}.book-spine{position:relative;flex:0 0 auto;width:56px;cursor:default;border:none;padding:0;background:none;font:inherit;color:inherit;text-align:inherit}.book-spine--clickable{cursor:pointer}.book-spine--clickable:focus-visible .book-spine__body{outline:2px solid var(--accent-strong);outline-offset:3px}.book-spine--compact{width:42px}.book-spine__body{display:block;height:168px;border-radius:4px 8px 8px 4px;overflow:hidden;background:var(--spine-color, var(--wood));box-shadow:inset -4px 0 8px #00000040,4px 8px 14px #00000047;transform-origin:bottom center;transition:transform .18s ease}.book-spine--compact .book-spine__body{height:112px}.book-spine:hover .book-spine__body{transform:translateY(-6px) rotate(-1.5deg)}.book-spine__cover{width:100%;height:100%;object-fit:cover;display:block}.book-spine__fallback{width:100%;height:100%;display:grid;place-items:center;padding:.5rem;background:linear-gradient(180deg,rgba(255,255,255,.08),transparent),var(--spine-color, var(--wood))}.book-spine__initials{writing-mode:vertical-rl;text-orientation:mixed;transform:rotate(180deg);font-family:Cormorant Garamond,Georgia,serif;font-size:1rem;letter-spacing:.08em;color:#ffffffe0}.book-spine__tooltip{position:absolute;left:50%;bottom:calc(100% + 10px);transform:translate(-50%);min-width:180px;max-width:240px;padding:.65rem .75rem;border-radius:10px;background:#140f0cf5;border:1px solid var(--border);box-shadow:var(--shadow);opacity:0;pointer-events:none;transition:opacity .15s ease;z-index:5;display:flex;flex-direction:column;gap:.15rem;font-size:.85rem}.book-spine:hover .book-spine__tooltip{opacity:1}.book-spine__tooltip strong{font-family:Cormorant Garamond,Georgia,serif;font-size:1rem}.bookshelf--compact .bookshelf__books{gap:.45rem}@media(max-width:640px){.book-spine{width:48px}.book-spine__body{height:140px}}.book-detail-overlay{position:fixed;top:0;right:0;bottom:0;left:0;z-index:100;display:grid;place-items:center;padding:1rem;background:#0a0806b8;-webkit-backdrop-filter:blur(4px);backdrop-filter:blur(4px)}.book-detail{position:relative;width:min(720px,100%);max-height:min(90vh,820px);overflow:auto;margin:0;padding:1.5rem;border:1px solid var(--border);border-radius:var(--radius);background:linear-gradient(180deg,rgba(255,255,255,.04),transparent),var(--bg-card);box-shadow:var(--shadow);color:var(--text)}.book-detail__close{position:absolute;top:.85rem;right:.85rem;width:2rem;height:2rem;border:none;border-radius:999px;background:#ffffff14;color:var(--text);font-size:1.4rem;line-height:1;cursor:pointer}.book-detail__layout{display:grid;grid-template-columns:160px 1fr;gap:1.5rem}.book-detail__cover-wrap{width:160px}.book-detail__cover,.book-detail__cover-fallback{width:100%;aspect-ratio:2 / 3;border-radius:8px;box-shadow:0 12px 28px #00000059}.book-detail__cover{object-fit:cover;display:block}.book-detail__cover-fallback{display:grid;place-items:center;background:linear-gradient(180deg,rgba(255,255,255,.08),transparent),var(--spine-color, var(--wood));font-family:Cormorant Garamond,Georgia,serif;font-size:2rem;letter-spacing:.08em}.book-detail__shelf{color:var(--accent-strong);font-size:.85rem;text-transform:uppercase;letter-spacing:.06em;margin-bottom:.35rem}.book-detail__title{font-size:clamp(1.75rem,4vw,2.25rem);margin-bottom:.35rem}.book-detail__author{color:var(--text-muted);font-size:1.05rem;margin-bottom:.75rem}.book-detail__stars{display:inline-flex;gap:.15rem;margin-bottom:1rem}.book-detail__star{color:#fff3}.book-detail__star.is-filled{color:var(--accent-strong)}.book-detail__meta{display:grid;grid-template-columns:auto 1fr;gap:.35rem 1rem;margin:0 0 1rem}.book-detail__meta dt{color:var(--text-muted);font-size:.9rem}.book-detail__meta dd{margin:0}.book-detail__review h3{font-size:1.15rem;margin-bottom:.35rem}.book-detail__review p{color:var(--text-muted);white-space:pre-wrap;line-height:1.6}@media(max-width:640px){.book-detail__layout{grid-template-columns:1fr}.book-detail__cover-wrap{width:120px;margin:0 auto}}