:root{--bg:#faf8f4;--fg:#222;--muted:#6b6b6b;--card:#fff;--line:#e4dfd5;--accent:#2f5d50;--on-accent:#fff;--warn:#9a5b00}
@media(prefers-color-scheme:dark){:root:not([data-theme]){--bg:#161614;--fg:#eceae4;--muted:#9a9890;--card:#1f1f1c;--line:#34332e;--accent:#7fc3ae;--on-accent:#10201b;--warn:#e0a84a}}
:root[data-theme=paper]{--bg:#faf8f4;--fg:#222;--muted:#6b6b6b;--card:#fff;--line:#e4dfd5;--accent:#2f5d50;--on-accent:#fff;--warn:#9a5b00}
:root[data-theme=midnight]{--bg:#12141c;--fg:#e8eaf2;--muted:#9096ab;--card:#1b1e2a;--line:#2e3244;--accent:#8ea2ff;--on-accent:#101530;--warn:#e0a84a}
:root[data-theme=forest]{--bg:#f1f5ee;--fg:#1c2a21;--muted:#5d7064;--card:#fbfdf9;--line:#d3ddcc;--accent:#2e7d4f;--on-accent:#fff;--warn:#8a5a00}
:root[data-theme=ocean]{--bg:#eef6f9;--fg:#12303b;--muted:#587783;--card:#fbfeff;--line:#cfe2ea;--accent:#0b7a99;--on-accent:#fff;--warn:#945a00}
:root[data-theme=sunset]{--bg:#fff4ec;--fg:#3a2118;--muted:#85655a;--card:#fffaf6;--line:#f0d9ca;--accent:#c4501f;--on-accent:#fff;--warn:#8f5200}
:root[data-theme=lavender]{--bg:#f6f2fb;--fg:#2a2238;--muted:#756a8a;--card:#fdfbff;--line:#e2d9f0;--accent:#6b4bb8;--on-accent:#fff;--warn:#8f5200}
:root[data-theme=slate]{--bg:#1d2227;--fg:#e6e9ec;--muted:#98a1a9;--card:#272d33;--line:#39414a;--accent:#5fd0c0;--on-accent:#06231f;--warn:#e0a84a}
:root{
  --serif:'Fraunces',Georgia,'Times New Roman',serif;
  --sans:'Inter',system-ui,-apple-system,'Segoe UI',sans-serif;
  --tint:color-mix(in srgb,var(--accent) 9%,var(--card));
  --tint2:color-mix(in srgb,var(--accent) 16%,var(--card));
  --glow:color-mix(in srgb,var(--accent) 22%,transparent);
  --shadow:0 1px 2px rgba(20,20,20,.04),0 10px 30px -12px rgba(20,20,20,.16);
  --r:20px;
}
*{box-sizing:border-box}
html{scroll-behavior:smooth}
body{margin:0;background:var(--bg);color:var(--fg);font:16px/1.65 var(--sans);-webkit-font-smoothing:antialiased;transition:background .4s,color .4s;min-height:100vh}
.wash{position:fixed;inset:0;z-index:-1;pointer-events:none;
  background:radial-gradient(900px 500px at 85% -10%,var(--glow),transparent 70%),radial-gradient(700px 500px at -10% 30%,color-mix(in srgb,var(--accent) 12%,transparent),transparent 70%)}
main{position:relative;max-width:760px;margin:0 auto;padding:28px 18px 56px}
.serif,h1,h2,h3{font-family:var(--serif);font-weight:600;letter-spacing:-.01em;line-height:1.2}
h2{font-size:1.45rem;margin:0 0 .6rem}
h3{font-size:1.15rem;margin:0 0 .4rem}
p{margin:.4rem 0 .8rem}
.muted{color:var(--muted)}.small{font-size:.88rem}
.err{color:#c0392b;min-height:1.2em}

/* hero */
.hero{text-align:center;padding:30px 0 22px;position:relative}
.orb{position:relative;width:96px;height:96px;margin:0 auto 14px}
.orb i{position:absolute;inset:0;border-radius:50%;background:radial-gradient(circle at 35% 30%,color-mix(in srgb,var(--accent) 55%,#fff),var(--accent));opacity:.9;animation:breathe 8s ease-in-out infinite}
.orb i:nth-child(2){opacity:.28;animation-delay:.7s;background:var(--accent)}
.orb i:nth-child(3){opacity:.14;animation-delay:1.4s;background:var(--accent)}
@keyframes breathe{0%,100%{transform:scale(.62)}50%{transform:scale(1.08)}}
.eyebrow{font-size:.78rem;letter-spacing:.16em;text-transform:uppercase;color:var(--accent);font-weight:600;margin:0}
.hero h1{font-size:clamp(2.1rem,6.5vw,3rem);margin:.35rem 0 .5rem}
.sub{max-width:34rem;margin:0 auto;color:var(--muted);font-size:1.05rem}

/* panels, inputs, buttons */
.panel{background:var(--card);border:1px solid var(--line);border-radius:var(--r);box-shadow:var(--shadow);padding:20px}
.narrow{max-width:420px;margin:12px auto}
.search{margin-top:6px}
.field-label{display:block;font-family:var(--serif);font-size:1.15rem;margin-bottom:10px}
.searchgrid{display:grid;gap:10px;grid-template-columns:1fr auto;grid-template-areas:'t g' 'a r'}
#title{grid-area:t}#author{grid-area:a}#go{grid-area:g}#addBook{grid-area:r;white-space:nowrap}
.stack{display:grid;gap:10px;margin-top:10px}
input,textarea{font:inherit;color:var(--fg);background:var(--bg);border:1.5px solid var(--line);border-radius:14px;padding:12px 14px;width:100%;transition:border-color .2s,box-shadow .2s}
input::placeholder,textarea::placeholder{color:var(--muted);opacity:.8}
input:focus,textarea:focus{outline:none;border-color:var(--accent);box-shadow:0 0 0 4px var(--glow)}
button{font:inherit;cursor:pointer;border-radius:999px;border:0;padding:11px 20px;font-weight:600;transition:transform .15s,box-shadow .2s,background .2s,opacity .2s}
button:focus-visible,summary:focus-visible,.sw:focus-visible{outline:3px solid var(--accent);outline-offset:2px}
button:disabled{opacity:.6;cursor:default}
.primary{background:var(--accent);color:var(--on-accent);box-shadow:0 6px 16px -6px var(--accent);white-space:nowrap}
.primary:hover:not(:disabled){transform:translateY(-1px)}
.soft{background:var(--tint2);color:var(--accent);padding:9px 16px}
.soft:hover:not(:disabled){background:color-mix(in srgb,var(--accent) 24%,var(--card))}
.soft.small{padding:6px 14px;font-size:.85rem}
.personal{margin-top:12px}
.personal summary{cursor:pointer;color:var(--accent);font-weight:600;list-style:none}
.personal summary::before{content:'+ ';}
.personal[open] summary::before{content:'\2212 ';}
.personal textarea{margin-top:6px}
.inline{display:flex;gap:10px;margin:.4rem 0 .8rem}

/* status / loading */
.status:not(:empty){display:flex;align-items:center;gap:14px;justify-content:center;padding:26px 8px;color:var(--muted);text-align:center}
.status .mini{position:relative;width:34px;height:34px;flex:none}
.status .mini i{position:absolute;inset:0;border-radius:50%;background:var(--accent);opacity:.5;animation:breathe 4s ease-in-out infinite}
.status .mini i+i{animation-delay:.6s;opacity:.25}

/* lists */
.block{margin-top:40px}
.headrow{display:flex;justify-content:space-between;align-items:center;gap:10px}
.list{list-style:none;padding:0;margin:0;display:grid;gap:8px}
.list li{display:flex;align-items:center;gap:10px;background:var(--card);border:1px solid var(--line);border-radius:14px;padding:10px 14px}
.list li.empty{background:none;border-style:dashed;color:var(--muted);justify-content:center;text-align:center;padding:18px}
.list li .grow{flex:1;min-width:0}
.list a{cursor:pointer;color:var(--fg)}.list a:hover{color:var(--accent)}
.rn label{display:flex;gap:12px;align-items:center;cursor:pointer;flex:1;min-width:0}
.rn input[type=checkbox]{appearance:none;width:24px;height:24px;border-radius:50%;border:2px solid var(--accent);padding:0;flex:none;display:grid;place-content:center;cursor:pointer;background:transparent;box-shadow:none}
.rn input[type=checkbox]:checked{background:var(--accent)}
.rn input[type=checkbox]:checked::after{content:'';width:6px;height:11px;border:solid var(--on-accent);border-width:0 2.5px 2.5px 0;transform:rotate(45deg) translate(-1px,-1px)}
.rn.done{opacity:.7}.rn.done .t{text-decoration:line-through;color:var(--muted)}
.tiny{background:none;color:var(--muted);padding:6px 10px;font-weight:500;font-size:.85rem}
.tiny:hover{color:var(--accent)}

/* categories */
.chips{display:flex;flex-wrap:wrap;gap:8px;margin:2px 0 12px}
.chip{background:var(--card);color:var(--fg);border:1.5px solid var(--line);padding:6px 14px;font-size:.88rem;font-weight:500}
.chip:hover{border-color:var(--accent);color:var(--accent)}
.chip[aria-pressed=true]{background:var(--accent);border-color:var(--accent);color:var(--on-accent)}
/* recommendations rail */
.rail{display:flex;gap:14px;overflow-x:auto;scroll-snap-type:x mandatory;padding:6px 2px 16px;margin:0 -18px;padding-inline:18px;scrollbar-width:thin}
.rec{flex:0 0 min(270px,78%);scroll-snap-align:start;background:var(--card);border:1px solid var(--line);border-radius:var(--r);padding:16px;box-shadow:var(--shadow);display:flex;flex-direction:column;gap:6px}
.rec .tag{align-self:flex-start;font-size:.72rem;font-weight:600;letter-spacing:.06em;text-transform:uppercase;color:var(--accent);background:var(--tint2);padding:3px 10px;border-radius:999px}
.rec strong{font-family:var(--serif);font-size:1.1rem;line-height:1.25}
.rec .why{font-size:.93rem}
.rec .row{margin-top:auto;padding-top:8px}

/* brief */
#result{margin-top:26px}
.brief-head{text-align:center;margin:10px 0 22px}
.brief-head h2{font-size:clamp(1.7rem,5vw,2.3rem);margin:0}
.byline{color:var(--muted);margin:.2rem 0 1rem}
.quote{font-family:var(--serif);font-size:1.25rem;line-height:1.45;max-width:34rem;margin:0 auto;color:var(--fg)}
.caveat{border:1px solid color-mix(in srgb,var(--warn) 40%,var(--line));background:color-mix(in srgb,var(--warn) 9%,var(--card));color:var(--fg);border-radius:14px;padding:12px 16px;margin:14px 0}
.intro{display:grid;gap:14px;margin:18px 0}
@media(min-width:620px){.intro{grid-template-columns:1fr 1fr}}
.tile{background:var(--tint);border-radius:var(--r);padding:16px 18px}
.label{font-size:.72rem;text-transform:uppercase;letter-spacing:.12em;color:var(--accent);font-weight:700;margin:0 0 4px}
.tile p:last-child,.card p:last-child{margin-bottom:0}
.card{background:var(--card);border:1px solid var(--line);border-radius:var(--r);padding:20px;margin:16px 0;box-shadow:var(--shadow)}
.point-head{display:flex;gap:14px;align-items:flex-start;margin-bottom:6px}
.num{flex:none;width:36px;height:36px;border-radius:50%;background:var(--accent);color:var(--on-accent);display:grid;place-items:center;font-family:var(--serif);font-weight:600}
.point-head h3{margin:3px 0 0}
.means{background:var(--tint);border-radius:14px;padding:12px 16px;margin:12px 0}
.checks{list-style:none;padding:0;margin:.3rem 0 0;display:grid;gap:8px}
.checks li{position:relative;padding-left:30px}
.checks li::before{content:'';position:absolute;left:2px;top:.35em;width:16px;height:16px;border-radius:50%;border:2px solid var(--accent)}
.example{font-style:italic;color:var(--muted);border-left:3px solid var(--line);padding-left:14px;margin:12px 0 0}
.week{background:linear-gradient(135deg,var(--accent),color-mix(in srgb,var(--accent) 70%,#000));color:var(--on-accent);border:0}
.week .label{color:inherit;opacity:.85}.week p{font-family:var(--serif);font-size:1.2rem;line-height:1.45}
.reflect{background:var(--tint);border-style:dashed}
.reflect ol{padding-left:1.2rem;margin:.4rem 0 12px;font-family:var(--serif);font-size:1.08rem}
.reflect li{margin:6px 0}
.reflect textarea{background:var(--card)}
.saved-note{font-size:.8rem;color:var(--muted);min-height:1.2em;margin:6px 0 0}
.watch{color:var(--muted);padding:4px 6px}
.row{display:flex;gap:10px;flex-wrap:wrap;margin:14px 0}

footer{margin-top:56px;text-align:center;color:var(--muted);font-size:.85rem}
.credit{margin-top:14px;color:var(--fg);opacity:.8}

/* theme picker (top right) */
.themewrap{position:absolute;top:16px;right:18px;z-index:10}
#themeBtn{width:42px;height:42px;padding:0;border-radius:50%;background:var(--card);color:var(--accent);border:1px solid var(--line);display:grid;place-items:center;box-shadow:var(--shadow)}
#themeBtn[aria-expanded=true]{border-color:var(--accent)}
.themes{position:absolute;right:0;top:50px;display:grid;grid-template-columns:repeat(4,28px);gap:10px;padding:12px;background:var(--card);border:1px solid var(--line);border-radius:14px;box-shadow:0 12px 32px rgba(0,0,0,.2)}
.themes[hidden]{display:none}
.sw{width:28px;height:28px;border-radius:50%;padding:0;border:2px solid var(--line);background:linear-gradient(135deg,var(--s1) 50%,var(--s2) 50%)}
.sw[aria-pressed=true]{outline:3px solid var(--accent);outline-offset:2px}

@media(max-width:480px){.searchgrid{grid-template-columns:1fr;grid-template-areas:'t' 'a' 'g' 'r'}}
@media(prefers-reduced-motion:reduce){*{animation:none!important;transition:none!important;scroll-behavior:auto!important}.orb i:nth-child(1){transform:scale(.9)}}
@media print{.wash,.themewrap,.search,.block,.row,.reflect,footer,.orb{display:none!important}body{background:#fff;color:#000}.card,.week{box-shadow:none;background:#fff;color:#000;border:1px solid #ccc}}