:root{
  --accent:#6d4aff;
  --accent-strong:#5536db;
  --accent-soft:#eee9ff;
  --app-bg:#f6f7fb;
  --surface:#ffffff;
  --surface-2:#f1f3f8;
  --ink:#172033;
  --muted:#667085;
  --border:#e4e7ec;
  --success:#16815d;
  --warning:#a15c00;
  --danger:#c4324a;
  --shadow:0 18px 55px rgba(26,34,56,.10);
  --reader-bg:#fffdf8;
  --reader-text:#172033;
  --reader-highlight:#ffe58f;
  --reader-font:Georgia,"Times New Roman",serif;
  --reader-size:20px;
  --reader-line:1.7;
  color-scheme:light;
}
*{box-sizing:border-box}
html,body{margin:0;min-height:100%;background:var(--app-bg);color:var(--ink);font-family:Inter,ui-sans-serif,system-ui,-apple-system,BlinkMacSystemFont,"Segoe UI",sans-serif}
body{min-height:100vh}
button,input,select{font:inherit}
button,a{tap-highlight-color:transparent;-webkit-tap-highlight-color:transparent}
a{color:inherit}
.hidden{display:none!important}
.sr-only{position:absolute;width:1px;height:1px;padding:0;margin:-1px;overflow:hidden;clip:rect(0,0,0,0);white-space:nowrap;border:0}
.app-shell{min-height:100vh}
.topbar{position:sticky;top:0;z-index:30;display:flex;align-items:center;justify-content:space-between;gap:16px;padding:14px clamp(16px,4vw,48px);background:rgba(255,255,255,.92);backdrop-filter:blur(18px);border-bottom:1px solid rgba(228,231,236,.9)}
.brand{display:flex;align-items:center;gap:12px;text-decoration:none;font-weight:800;letter-spacing:-.02em}
.brand-mark{width:42px;height:42px;border-radius:14px;background:linear-gradient(145deg,var(--accent),#9d7cff);display:grid;place-items:center;color:#fff;box-shadow:0 10px 24px color-mix(in srgb,var(--accent) 28%,transparent)}
.brand-mark svg{width:25px;height:25px}
.brand-copy small{display:block;color:var(--muted);font-size:.72rem;font-weight:650;letter-spacing:.06em;text-transform:uppercase}
.brand-copy strong{display:block;font-size:1rem}
.top-actions{display:flex;align-items:center;gap:9px}
.container{width:min(1180px,calc(100% - 32px));margin:0 auto;padding:30px 0 90px}
.page-head{display:flex;align-items:flex-end;justify-content:space-between;gap:20px;margin-bottom:24px}
.page-head h1{margin:0;font-size:clamp(1.8rem,4vw,3rem);letter-spacing:-.045em}
.page-head p{margin:.45rem 0 0;color:var(--muted);max-width:720px;line-height:1.55}
.button{border:0;border-radius:13px;padding:11px 16px;font-weight:750;cursor:pointer;display:inline-flex;align-items:center;justify-content:center;gap:8px;text-decoration:none;transition:transform .16s ease,box-shadow .16s ease,background .16s ease;min-height:44px}
.button:hover{transform:translateY(-1px)}
.button:active{transform:translateY(0)}
.button.primary{background:var(--accent);color:#fff;box-shadow:0 9px 24px color-mix(in srgb,var(--accent) 26%,transparent)}
.button.primary:hover{background:var(--accent-strong)}
.button.secondary{background:var(--surface-2);color:var(--ink)}
.button.ghost{background:transparent;color:var(--ink);border:1px solid var(--border)}
.button.danger{background:#fff0f2;color:var(--danger)}
.button.success{background:#e9f8f2;color:var(--success)}
.button.small{min-height:36px;padding:7px 11px;border-radius:10px;font-size:.86rem}
.button.icon{width:44px;padding:0}
.button:disabled{opacity:.52;cursor:not-allowed;transform:none}
.card{background:var(--surface);border:1px solid var(--border);border-radius:22px;box-shadow:0 8px 30px rgba(26,34,56,.055)}
.upload-card{padding:24px;margin-bottom:28px;display:grid;grid-template-columns:1.15fr .85fr;gap:24px;align-items:center;overflow:hidden;position:relative}
.upload-card:before{content:"";position:absolute;right:-80px;top:-110px;width:280px;height:280px;border-radius:50%;background:radial-gradient(circle,var(--accent-soft),transparent 68%);pointer-events:none}
.drop-zone{border:2px dashed color-mix(in srgb,var(--accent) 35%,var(--border));border-radius:18px;padding:28px;text-align:center;background:linear-gradient(180deg,#fff,rgba(238,233,255,.35));transition:.2s ease;position:relative}
.drop-zone.dragging{border-color:var(--accent);background:var(--accent-soft)}
.drop-zone input[type=file]{position:absolute;inset:0;opacity:0;cursor:pointer}
.drop-icon{width:62px;height:62px;margin:0 auto 14px;border-radius:20px;background:var(--accent-soft);display:grid;place-items:center;color:var(--accent);font-size:30px}
.drop-zone h3{margin:0 0 7px}.drop-zone p{margin:0;color:var(--muted);line-height:1.5}
.form-grid{display:grid;gap:14px;position:relative}
.field{display:grid;gap:7px}.field label{font-size:.83rem;font-weight:750;color:#344054}
.input,.select{width:100%;border:1px solid var(--border);background:#fff;color:var(--ink);border-radius:12px;min-height:44px;padding:10px 12px;outline:none;transition:border .15s,box-shadow .15s}
.input:focus,.select:focus{border-color:var(--accent);box-shadow:0 0 0 4px color-mix(in srgb,var(--accent) 13%,transparent)}
.upload-progress{height:8px;border-radius:99px;background:#eceef4;overflow:hidden}.upload-progress>span{display:block;height:100%;width:0;background:linear-gradient(90deg,var(--accent),#aa83ff);transition:width .2s}
.section-title{display:flex;align-items:center;justify-content:space-between;margin:30px 0 16px}.section-title h2{margin:0;font-size:1.2rem}
.books-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(240px,1fr));gap:20px}
.book-card{overflow:hidden;display:flex;flex-direction:column;min-height:365px;transition:transform .18s ease,box-shadow .18s ease}
.book-card:hover{transform:translateY(-4px);box-shadow:var(--shadow)}
.book-cover{height:190px;background:linear-gradient(145deg,#ece8ff,#d7d0ff);position:relative;overflow:hidden;display:grid;place-items:center}
.book-cover img{width:100%;height:100%;object-fit:cover;display:block}
.book-cover-placeholder{width:80px;height:110px;border-radius:9px;background:#fff;box-shadow:0 14px 30px rgba(50,42,91,.2);display:grid;place-items:center;color:var(--accent);font-size:34px}
.status-badge{position:absolute;top:12px;right:12px;border-radius:99px;padding:6px 9px;font-size:.72rem;font-weight:800;background:rgba(255,255,255,.92);backdrop-filter:blur(8px)}
.status-ready{color:var(--success)}.status-processing,.status-queued{color:var(--warning)}.status-failed{color:var(--danger)}
.book-body{padding:18px;display:flex;flex-direction:column;gap:12px;flex:1}
.book-title{margin:0;font-size:1.08rem;line-height:1.3;letter-spacing:-.02em}.book-author{color:var(--muted);font-size:.88rem;margin-top:-6px}
.meta-row{display:flex;flex-wrap:wrap;gap:8px;color:var(--muted);font-size:.79rem}.meta-chip{background:var(--surface-2);padding:5px 8px;border-radius:8px}
.progress-line{height:7px;background:#eceef4;border-radius:99px;overflow:hidden}.progress-line span{display:block;height:100%;background:var(--accent);border-radius:inherit}
.book-actions{margin-top:auto;display:flex;gap:8px}.book-actions .button{flex:1}
.empty-state{padding:48px 24px;text-align:center}.empty-state h3{margin:0 0 8px}.empty-state p{color:var(--muted);margin:0}
.login-page{min-height:100vh;display:grid;grid-template-columns:1.05fr .95fr;background:#fff}
.login-visual{padding:clamp(30px,6vw,90px);background:radial-gradient(circle at 20% 10%,#9577ff 0,#6d4aff 38%,#34226e 100%);color:#fff;display:flex;flex-direction:column;justify-content:space-between;position:relative;overflow:hidden}
.login-visual:after{content:"";position:absolute;width:560px;height:560px;border:1px solid rgba(255,255,255,.15);border-radius:50%;right:-220px;bottom:-260px;box-shadow:0 0 0 90px rgba(255,255,255,.045),0 0 0 180px rgba(255,255,255,.035)}
.login-visual h1{font-size:clamp(2.4rem,6vw,5.2rem);line-height:.96;letter-spacing:-.065em;margin:40px 0 20px;max-width:720px}.login-visual p{max-width:620px;font-size:1.1rem;line-height:1.7;color:rgba(255,255,255,.82)}
.login-feature{display:flex;gap:12px;align-items:center;color:rgba(255,255,255,.9);font-weight:650;margin-top:12px}.login-feature i{width:30px;height:30px;border-radius:10px;background:rgba(255,255,255,.14);display:grid;place-items:center;font-style:normal}
.login-panel{display:grid;place-items:center;padding:30px}.login-form{width:min(440px,100%)}.login-form h2{font-size:2rem;margin:0 0 8px;letter-spacing:-.04em}.login-form>p{color:var(--muted);margin:0 0 28px;line-height:1.55}.login-form .field{margin-bottom:16px}.login-form .button{width:100%;margin-top:8px}
.back-link{display:inline-flex;align-items:center;gap:7px;color:var(--muted);text-decoration:none;font-weight:700;margin-bottom:16px}
.book-hero{display:grid;grid-template-columns:170px 1fr;gap:25px;padding:24px;margin-bottom:22px}.book-hero-cover{width:170px;height:235px;border-radius:14px;overflow:hidden;background:var(--accent-soft);display:grid;place-items:center;box-shadow:0 15px 35px rgba(40,34,72,.16)}.book-hero-cover img{width:100%;height:100%;object-fit:cover}.book-hero h1{margin:0;font-size:clamp(1.8rem,4vw,3rem);letter-spacing:-.05em}.book-hero p{color:var(--muted);line-height:1.6}.hero-actions{display:flex;flex-wrap:wrap;gap:9px;margin-top:18px}
.chapter-list{overflow:hidden}.chapter-row{display:grid;grid-template-columns:54px minmax(0,1fr) auto;align-items:center;gap:14px;padding:15px 18px;border-bottom:1px solid var(--border)}.chapter-row:last-child{border-bottom:0}.chapter-no{width:42px;height:42px;border-radius:13px;background:var(--surface-2);display:grid;place-items:center;font-weight:850;color:var(--muted)}.chapter-info h3{font-size:1rem;margin:0 0 5px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.chapter-info p{margin:0;color:var(--muted);font-size:.8rem}.chapter-buttons{display:flex;flex-wrap:wrap;justify-content:flex-end;gap:7px}.pill{display:inline-flex;align-items:center;gap:5px;padding:5px 8px;border-radius:99px;font-size:.74rem;font-weight:800}.pill.ready{background:#e9f8f2;color:var(--success)}.pill.queued,.pill.processing{background:#fff4df;color:var(--warning)}.pill.failed{background:#fff0f2;color:var(--danger)}.pill.text_ready{background:#edf2ff;color:#3e5bb4}
.reader-shell{height:100vh;display:grid;grid-template-rows:auto 1fr auto;background:var(--reader-bg);color:var(--reader-text);overflow:hidden}
.reader-top{display:flex;align-items:center;justify-content:space-between;gap:12px;padding:11px 16px;border-bottom:1px solid color-mix(in srgb,var(--reader-text) 12%,transparent);background:color-mix(in srgb,var(--reader-bg) 92%,transparent);backdrop-filter:blur(18px);z-index:20}.reader-title{min-width:0}.reader-title strong,.reader-title small{display:block;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.reader-title small{color:color-mix(in srgb,var(--reader-text) 58%,transparent);margin-top:2px}.reader-layout{display:grid;grid-template-columns:310px minmax(0,1fr);min-height:0}.reader-sidebar{border-right:1px solid color-mix(in srgb,var(--reader-text) 12%,transparent);overflow:auto;padding:13px;background:color-mix(in srgb,var(--reader-bg) 97%,var(--reader-text) 3%)}.reader-sidebar h3{font-size:.78rem;text-transform:uppercase;letter-spacing:.09em;color:color-mix(in srgb,var(--reader-text) 55%,transparent);margin:9px 10px}.reader-chapter-link{display:block;width:100%;text-align:left;border:0;background:transparent;color:inherit;padding:11px 12px;border-radius:12px;cursor:pointer;line-height:1.35}.reader-chapter-link:hover{background:color-mix(in srgb,var(--accent) 8%,transparent)}.reader-chapter-link.active{background:color-mix(in srgb,var(--accent) 15%,transparent);color:var(--accent);font-weight:800}.reader-content-wrap{overflow:auto;scroll-behavior:smooth}.reader-content{width:min(860px,calc(100% - 40px));margin:0 auto;padding:45px 0 150px;font-family:var(--reader-font);font-size:var(--reader-size);line-height:var(--reader-line)}.reader-content h1{font-family:ui-sans-serif,system-ui,sans-serif;font-size:clamp(1.8rem,4vw,3.1rem);line-height:1.12;letter-spacing:-.05em;margin:0 0 34px;color:inherit}.reader-paragraph{margin:0 0 1.35em}.sentence{border-radius:.22em;cursor:pointer;transition:background .12s,box-shadow .12s;padding:.035em .03em}.sentence:hover{background:color-mix(in srgb,var(--reader-highlight) 45%,transparent)}.sentence.active{background:var(--reader-highlight);box-shadow:0 0 0 .15em var(--reader-highlight)}
.reader-player{border-top:1px solid color-mix(in srgb,var(--reader-text) 12%,transparent);background:color-mix(in srgb,var(--reader-bg) 94%,transparent);backdrop-filter:blur(20px);padding:10px clamp(12px,3vw,32px);display:grid;grid-template-columns:auto minmax(180px,1fr) auto;align-items:center;gap:16px;z-index:30}.player-controls{display:flex;align-items:center;gap:7px}.round-button{width:42px;height:42px;border-radius:50%;border:0;background:color-mix(in srgb,var(--reader-text) 9%,transparent);color:inherit;cursor:pointer;font-weight:800}.round-button.play{width:50px;height:50px;background:var(--accent);color:#fff;font-size:1.2rem}.timeline{display:grid;grid-template-columns:auto 1fr auto;gap:10px;align-items:center}.timeline time{font-size:.75rem;color:color-mix(in srgb,var(--reader-text) 62%,transparent);font-variant-numeric:tabular-nums}.seek{width:100%;accent-color:var(--accent)}.player-right{display:flex;align-items:center;gap:9px}.rate-select{border:1px solid color-mix(in srgb,var(--reader-text) 17%,transparent);background:transparent;color:inherit;border-radius:10px;padding:8px}.mobile-chapters{display:none}
.settings-panel{position:fixed;inset:0;z-index:80;background:rgba(15,18,28,.42);display:grid;justify-items:end}.settings-drawer{height:100%;width:min(420px,100%);background:var(--surface);padding:22px;overflow:auto;box-shadow:-20px 0 60px rgba(15,18,28,.18)}.settings-head{display:flex;align-items:center;justify-content:space-between;margin-bottom:20px}.settings-head h2{margin:0}.settings-group{padding:17px 0;border-bottom:1px solid var(--border)}.settings-group h3{font-size:.86rem;margin:0 0 12px}.settings-grid{display:grid;grid-template-columns:1fr 1fr;gap:12px}.color-field{display:grid;grid-template-columns:44px 1fr;align-items:center;gap:9px}.color-field input[type=color]{width:44px;height:40px;border:0;background:transparent;padding:0}
.toast-container{position:fixed;right:18px;bottom:18px;display:grid;gap:10px;z-index:200}.toast{min-width:260px;max-width:420px;padding:13px 15px;border-radius:14px;background:#172033;color:#fff;box-shadow:var(--shadow);animation:toast-in .2s ease}.toast.error{background:#9f2340}.toast.success{background:#146c50}@keyframes toast-in{from{opacity:0;transform:translateY(10px)}to{opacity:1;transform:none}}
.modal{position:fixed;inset:0;background:rgba(15,18,28,.46);z-index:90;display:grid;place-items:center;padding:20px}.modal-card{width:min(500px,100%);background:#fff;border-radius:22px;padding:24px;box-shadow:var(--shadow)}.modal-card h2{margin-top:0}.modal-actions{display:flex;justify-content:flex-end;gap:9px;margin-top:20px}
.spinner{width:18px;height:18px;border:2px solid currentColor;border-right-color:transparent;border-radius:50%;display:inline-block;animation:spin .7s linear infinite}@keyframes spin{to{transform:rotate(360deg)}}
.processing-note{padding:12px 14px;border-radius:13px;background:#fff7e8;color:#7b4b00;font-size:.88rem;line-height:1.5}
.error-note{padding:12px 14px;border-radius:13px;background:#fff0f2;color:#92213a;font-size:.88rem;line-height:1.5}
.offline-indicator{font-size:.76rem;font-weight:800;color:var(--success)}
@media(max-width:900px){.upload-card{grid-template-columns:1fr}.login-page{grid-template-columns:1fr}.login-visual{display:none}.reader-layout{grid-template-columns:1fr}.reader-sidebar{display:none}.mobile-chapters{display:inline-flex}.book-hero{grid-template-columns:120px 1fr}.book-hero-cover{width:120px;height:170px}.chapter-row{grid-template-columns:46px minmax(0,1fr)}.chapter-buttons{grid-column:2;justify-content:flex-start}.reader-player{grid-template-columns:1fr;gap:7px}.player-controls{justify-content:center}.player-right{position:absolute;right:12px;bottom:16px}.timeline{order:-1}}
@media(max-width:620px){.container{width:min(100% - 20px,1180px);padding-top:18px}.topbar{padding:10px}.brand-copy small{display:none}.top-actions .button span.label{display:none}.page-head{align-items:flex-start;flex-direction:column}.upload-card{padding:14px}.drop-zone{padding:22px 14px}.books-grid{grid-template-columns:1fr 1fr;gap:12px}.book-card{min-height:330px}.book-cover{height:160px}.book-body{padding:13px}.book-actions{flex-direction:column}.book-hero{grid-template-columns:1fr;text-align:center;padding:18px}.book-hero-cover{margin:0 auto}.hero-actions{justify-content:center}.chapter-row{padding:13px 10px}.reader-top{padding:8px}.reader-content{width:calc(100% - 26px);padding-top:28px;font-size:var(--reader-size)}.reader-title{max-width:55vw}.reader-player{padding-bottom:max(10px,env(safe-area-inset-bottom))}.settings-grid{grid-template-columns:1fr}.toast-container{left:10px;right:10px;bottom:10px}.toast{min-width:0;max-width:none}.login-panel{padding:22px}.login-form h2{font-size:1.7rem}}
@media(max-width:420px){.books-grid{grid-template-columns:1fr}.book-cover{height:190px}.top-actions{gap:5px}.button.icon{width:40px;min-height:40px}}