/* NovelSphere — paper & ink */
:root{
  --bg:#faf7f2; --surface:#ffffff; --surface2:#f3eee5; --text:#1d1a16; --muted:#6f675c;
  --line:#e6dfd2; --accent:#b4431f; --accent2:#d9822b; --accent-ink:#fff;
  --shadow:0 1px 2px rgba(40,25,10,.06),0 8px 24px -8px rgba(40,25,10,.18);
  --radius:14px; --serif:'Fraunces','Georgia',serif; --read:'Literata','Georgia',serif; --sans:'Inter',system-ui,-apple-system,'Segoe UI',sans-serif;
}
:root[data-theme="dark"]{
  --bg:#14120f; --surface:#1c1915; --surface2:#242019; --text:#efe9df; --muted:#a39a8c;
  --line:#2f2a22; --accent:#e8794a; --accent2:#f0a64a; --accent-ink:#1a0e07;
  --shadow:0 1px 2px rgba(0,0,0,.4),0 10px 30px -10px rgba(0,0,0,.6);
}
:root[data-theme="sepia"]{
  --bg:#f1e6cf; --surface:#f8efdb; --surface2:#ebdcbc; --text:#3b2f1e; --muted:#7d6a4d;
  --line:#dccaa2; --accent:#9a3412; --accent2:#c2410c; --accent-ink:#fff;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;background:var(--bg);color:var(--text);font-family:var(--sans);font-size:16px;line-height:1.55;-webkit-font-smoothing:antialiased}
a{color:inherit;text-decoration:none}
img{max-width:100%}
.wrap{max-width:1180px;margin:0 auto;padding:0 20px}
.muted{color:var(--muted)}
h1,h2,h3{font-family:var(--serif);line-height:1.15;margin:0}
::selection{background:var(--accent);color:var(--accent-ink)}
:focus-visible{outline:2px solid var(--accent);outline-offset:2px;border-radius:6px}

/* nav */
.nav{position:sticky;top:0;z-index:30;background:color-mix(in srgb,var(--bg) 88%,transparent);backdrop-filter:blur(12px);border-bottom:1px solid var(--line)}
.nav-in{display:flex;align-items:center;gap:22px;height:64px}
.logo{display:flex;align-items:center;gap:10px;font-family:var(--serif);font-weight:700;font-size:20px;letter-spacing:-.01em}
.logo-mark{display:grid;place-items:center;width:32px;height:32px;border-radius:9px;background:linear-gradient(135deg,var(--accent),var(--accent2));color:var(--accent-ink);font-size:18px;box-shadow:0 4px 12px -4px var(--accent)}
.nav-links{display:flex;gap:6px}
.nav-links a{padding:8px 12px;border-radius:9px;color:var(--muted);font-weight:500;font-size:15px;transition:.15s}
.nav-links a:hover{color:var(--text);background:var(--surface2)}
.nav-search{margin-left:auto;flex:0 1 280px}
.nav-search input{width:100%}
.theme-btn{border:1px solid var(--line);background:var(--surface);color:var(--text);width:38px;height:38px;border-radius:10px;font-size:18px;cursor:pointer;transition:.2s}
.theme-btn:hover{transform:rotate(25deg);border-color:var(--accent)}
input,select,button,textarea{font:inherit;color:inherit}
input[type=search],input[type=text],input[type=password],input:not([type]),select{background:var(--surface);border:1px solid var(--line);border-radius:10px;padding:10px 14px;outline:none;transition:.15s;width:100%}
input:focus,select:focus{border-color:var(--accent);box-shadow:0 0 0 3px color-mix(in srgb,var(--accent) 20%,transparent)}
select{width:auto}

/* buttons / chips */
.btn{display:inline-flex;align-items:center;justify-content:center;gap:8px;padding:10px 18px;border-radius:11px;border:1px solid var(--line);background:var(--surface);font-weight:600;cursor:pointer;transition:.18s;font-size:15px}
.btn:hover{transform:translateY(-1px);border-color:var(--accent);box-shadow:var(--shadow)}
.btn.primary{background:linear-gradient(135deg,var(--accent),var(--accent2));color:var(--accent-ink);border-color:transparent}
.btn.big{padding:13px 24px;font-size:16px;border-radius:13px}
.btn.danger{color:#b91c1c;border-color:#e8b4b4}
.btn[disabled]{opacity:.5;pointer-events:none}
.chip{display:inline-block;padding:3px 10px;border-radius:999px;background:var(--surface2);color:var(--muted);font-size:12px;font-weight:600;border:1px solid var(--line)}
.chip.lg{padding:8px 15px;font-size:14px;background:var(--surface);transition:.15s}
.chip.lg:hover{border-color:var(--accent);color:var(--accent);transform:translateY(-2px)}
.chip small{opacity:.6;margin-left:4px}
.chips{display:flex;flex-wrap:wrap;gap:10px}

/* hero */
.hero{padding:56px 0 28px;background:radial-gradient(900px 400px at 85% -10%,color-mix(in srgb,var(--accent2) 22%,transparent),transparent),radial-gradient(700px 380px at 0% 0%,color-mix(in srgb,var(--accent) 14%,transparent),transparent)}
.hero-in{display:grid;grid-template-columns:1.25fr .75fr;gap:48px;align-items:center}
.eyebrow{font-size:12px;letter-spacing:.14em;text-transform:uppercase;color:var(--accent);font-weight:700;margin:0 0 14px}
.hero h1{font-size:clamp(38px,5.6vw,66px);letter-spacing:-.025em}
.hero h1 em{font-style:italic;color:var(--accent)}
.lead{font-size:18px;color:var(--muted);max-width:52ch;margin:18px 0 26px}
.hero-search{display:flex;gap:10px;max-width:520px}
.hero-search input{padding:14px 18px;border-radius:13px;font-size:16px}
.hero-stats{display:flex;gap:34px;margin-top:30px}
.hero-stats b{display:block;font-family:var(--serif);font-size:30px}
.hero-stats span{color:var(--muted);font-size:13px}
.hero-feature{display:flex;flex-direction:column;align-items:center;gap:16px;transition:.3s}
.hero-feature:hover{transform:translateY(-6px) rotate(-1deg)}
.hero-feature-meta{display:flex;flex-direction:column;align-items:center;text-align:center;gap:4px}
.hero-feature-meta strong{font-family:var(--serif);font-size:20px}
.hero-feature-meta small{color:var(--muted)}

/* covers */
.cover{position:relative;aspect-ratio:2/3;border-radius:6px 12px 12px 6px;overflow:hidden;background:linear-gradient(150deg,hsl(var(--h1) 55% 38%),hsl(var(--h2) 60% 24%));box-shadow:var(--shadow);width:100%}
.cover::after{content:"";position:absolute;inset:0;background:linear-gradient(90deg,rgba(0,0,0,.28),rgba(255,255,255,.12) 4%,transparent 9%);pointer-events:none}
.cover img{position:absolute;inset:0;width:100%;height:100%;object-fit:cover}
.cover-fallback{position:absolute;inset:0;display:flex;flex-direction:column;justify-content:space-between;padding:16% 12% 12% 16%;color:#fff;text-align:left}
.cover-fallback span{font-family:var(--serif);font-weight:700;font-size:clamp(14px,2vw,20px);line-height:1.15;text-shadow:0 1px 8px rgba(0,0,0,.4)}
.cover-fallback small{opacity:.85;font-size:12px;letter-spacing:.04em}
.cover.big{max-width:260px}

/* grid + cards */
.grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(168px,1fr));gap:26px 20px}
.card{display:flex;flex-direction:column;gap:12px;transition:.25s}
.card:hover{transform:translateY(-6px)}
.card:hover .cover{box-shadow:0 18px 36px -12px rgba(40,25,10,.4)}
.card-body h3{font-size:16px;font-family:var(--serif);font-weight:700;display:-webkit-box;-webkit-line-clamp:2;-webkit-box-orient:vertical;overflow:hidden}
.card-body p{margin:3px 0 8px;color:var(--muted);font-size:13.5px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}

/* blocks */
.block{padding:30px 20px}
.block-head{display:flex;align-items:baseline;justify-content:space-between;margin-bottom:20px}
.block-head h2{font-size:26px}
.block-head a{color:var(--accent);font-weight:600;font-size:14px}
.page-head{padding-top:36px}
.page-head h1{font-size:clamp(28px,4vw,42px)}
.filters{display:flex;gap:10px;flex-wrap:wrap;margin-top:18px}
.filters input{flex:1 1 220px;width:auto}
.empty{text-align:center;padding:70px 20px}
.empty h2{margin-bottom:10px}
.pager{display:flex;gap:6px;justify-content:center;margin-top:40px;flex-wrap:wrap}
.pager a{padding:8px 14px;border-radius:10px;border:1px solid var(--line);background:var(--surface);font-weight:600;font-size:14px}
.pager a.on,.pager a:hover{background:var(--accent);color:var(--accent-ink);border-color:var(--accent)}

/* continue reading */
.continue{display:grid;grid-template-columns:repeat(auto-fill,minmax(280px,1fr));gap:14px}
.cont-card{display:flex;flex-direction:column;gap:4px;padding:16px 18px;border-radius:var(--radius);background:var(--surface);border:1px solid var(--line);transition:.2s}
.cont-card:hover{border-color:var(--accent);transform:translateY(-3px);box-shadow:var(--shadow)}
.cont-card b{font-family:var(--serif);font-size:17px}
.cont-card small{color:var(--muted)}
.cont-bar{height:4px;border-radius:4px;background:var(--surface2);margin-top:8px;overflow:hidden}
.cont-bar i{display:block;height:100%;background:linear-gradient(90deg,var(--accent),var(--accent2))}

/* book page */
.book-hero{display:grid;grid-template-columns:260px 1fr;gap:44px;padding-top:44px;padding-bottom:12px}
.book-info h1{font-size:clamp(30px,4.4vw,50px);margin:12px 0 8px;letter-spacing:-.02em}
.by{font-size:18px;margin:0 0 16px}
.by a{color:var(--accent);font-weight:600}
.facts{display:flex;flex-wrap:wrap;gap:8px 26px;list-style:none;padding:0;margin:0 0 18px;color:var(--muted);font-size:14px}
.facts b{color:var(--text);font-size:16px}
.summary{max-width:66ch;color:var(--text);opacity:.88;font-size:16.5px}
.actions{display:flex;gap:12px;margin-top:22px;flex-wrap:wrap}
.toc{list-style:none;margin:0;padding:0;display:grid;grid-template-columns:repeat(auto-fill,minmax(340px,1fr));gap:8px 18px}
.toc a{display:flex;align-items:center;gap:12px;padding:12px 14px;border-radius:11px;border:1px solid transparent;transition:.15s}
.toc a:hover{background:var(--surface);border-color:var(--line)}
.toc-n{flex:0 0 32px;height:32px;border-radius:9px;background:var(--surface2);display:grid;place-items:center;font-weight:700;font-size:13px;color:var(--muted)}
.toc-t{flex:1;font-weight:500;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.toc small{color:var(--muted);font-size:12px}

/* reader */
.progress{position:fixed;top:0;left:0;right:0;height:3px;z-index:60;background:transparent}
.progress i{display:block;height:100%;width:0;background:linear-gradient(90deg,var(--accent),var(--accent2));transition:width .1s}
.reader-bar{position:sticky;top:64px;z-index:20;background:color-mix(in srgb,var(--bg) 90%,transparent);backdrop-filter:blur(10px);border-bottom:1px solid var(--line)}
.reader-bar-in{display:flex;align-items:center;gap:14px;height:50px}
.rb-back{font-size:14px;font-weight:600;color:var(--muted);white-space:nowrap}
.rb-back:hover{color:var(--accent)}
#chSelect{flex:1;min-width:0;max-width:420px;margin:0 auto;padding:7px 12px;font-size:14px}
.rb-tools{display:flex;gap:6px}
.rb-tools button{border:1px solid var(--line);background:var(--surface);border-radius:9px;padding:6px 11px;cursor:pointer;font-weight:700;font-size:13px}
.rb-tools button:hover{border-color:var(--accent);color:var(--accent)}
.reader{max-width:700px;margin:0 auto;padding:46px 22px 90px;--fs:20px}
.reader-head{text-align:center;margin-bottom:38px;padding-bottom:28px;border-bottom:1px solid var(--line)}
.reader-head h1{font-size:clamp(26px,4vw,38px);margin:6px 0 10px}
.prose{font-family:var(--read);font-size:var(--fs);line-height:1.78}
.prose.sans{font-family:var(--sans);line-height:1.7}
.prose p{margin:0 0 1.1em;text-align:left;hyphens:auto}
.prose p:first-child::first-letter{font-family:var(--serif);float:left;font-size:3.5em;line-height:.85;padding:.06em .1em 0 0;color:var(--accent);font-weight:700}
.reader-nav{display:flex;justify-content:space-between;gap:12px;margin-top:50px;padding-top:26px;border-top:1px solid var(--line)}

/* footer */
.foot{margin-top:60px;border-top:1px solid var(--line);background:var(--surface2)}
.foot-in{display:flex;justify-content:space-between;gap:30px;padding-top:34px;padding-bottom:34px;flex-wrap:wrap}
.foot p{color:var(--muted);max-width:44ch;margin:6px 0 0;font-size:14px}
.foot-links{display:flex;gap:18px;font-size:14px;color:var(--muted)}
.foot-links a:hover{color:var(--accent)}

/* toast */
.toast{position:fixed;left:50%;bottom:26px;transform:translate(-50%,30px);opacity:0;background:var(--text);color:var(--bg);padding:11px 20px;border-radius:12px;font-weight:600;font-size:14px;pointer-events:none;transition:.3s;z-index:90;box-shadow:var(--shadow)}
.toast.show{opacity:1;transform:translate(-50%,0)}

/* auth / install */
.auth-body{display:grid;place-items:center;min-height:100vh;padding:24px;background:radial-gradient(800px 400px at 80% 0%,color-mix(in srgb,var(--accent2) 20%,transparent),transparent),var(--bg)}
.auth-card{width:100%;max-width:420px;background:var(--surface);border:1px solid var(--line);border-radius:20px;padding:32px;box-shadow:var(--shadow)}
.auth-card.wide{max-width:560px}
.auth-logo{margin-bottom:10px}
.form{display:flex;flex-direction:column;gap:14px;margin-top:18px}
.form label{display:flex;flex-direction:column;gap:6px;font-size:13px;font-weight:600;color:var(--muted)}
.form select{width:100%}
.row2{display:grid;grid-template-columns:1fr 1fr;gap:12px}
.alert{background:#fde8e8;color:#8a1c1c;border:1px solid #f3b9b9;border-radius:11px;padding:11px 14px;margin-top:14px;font-size:14px}
:root[data-theme="dark"] .alert{background:#3a1d1d;color:#ffb4b4;border-color:#6a2d2d}

@media (max-width:860px){
  .hero-in{grid-template-columns:1fr}.hero-feature{display:none}
  .book-hero{grid-template-columns:1fr;gap:24px}.book-cover{max-width:200px}
  .nav-links{display:none}.nav-search{flex:1}
  .toc{grid-template-columns:1fr}
  .rb-back span{display:none}
  .row2{grid-template-columns:1fr}
}
@media (max-width:520px){.hero-stats{gap:22px}.grid{grid-template-columns:repeat(2,1fr);gap:22px 14px}.reader{--fs:18px}}
@media (prefers-reduced-motion:reduce){*{transition:none!important;animation:none!important}}