/* Brevik — clean, minimal, light-first with dark mode. Theme via [data-theme] tokens. */

:root{
  --bg:#FFFFFF; --surface:#FFFFFF; --surface-2:#FAFAFA; --raised:#FFFFFF;
  --ink:#18181B; --ink-2:#3F3F46; --muted:#71717A; --faint:#A1A1AA;
  --line:#ECECEC; --line-2:#E4E4E7;
  --accent:#6366F1; --accent-ink:#FFFFFF; --accent-soft:#EEF0FE; --accent-line:#C7CBF7;
  --good:#16A34A; --shadow:0 1px 2px rgba(24,24,27,.04),0 8px 24px -12px rgba(24,24,27,.10);
  --ring:0 0 0 3px rgba(99,102,241,.22);
  --radius:14px; --radius-lg:20px;
  --sans:-apple-system,BlinkMacSystemFont,"Segoe UI",Inter,Roboto,Helvetica,Arial,sans-serif;
  --mono:"JetBrains Mono",ui-monospace,SFMono-Regular,Menlo,monospace;
}
[data-theme="dark"]{
  --bg:#0B0B0F; --surface:#131318; --surface-2:#0F0F14; --raised:#17171D;
  --ink:#F4F4F5; --ink-2:#D4D4D8; --muted:#A1A1AA; --faint:#71717A;
  --line:#232329; --line-2:#2A2A31;
  --accent:#818CF8; --accent-ink:#0B0B0F; --accent-soft:#1B1B2E; --accent-line:#39395C;
  --good:#4ADE80; --shadow:0 1px 2px rgba(0,0,0,.4),0 12px 32px -16px rgba(0,0,0,.6);
  --ring:0 0 0 3px rgba(129,140,248,.28);
}

*{margin:0;padding:0;box-sizing:border-box}
html{scroll-behavior:smooth}
body{
  background:var(--bg);color:var(--ink);font-family:var(--sans);
  font-size:16px;line-height:1.55;-webkit-font-smoothing:antialiased;
  min-height:100vh;transition:background .2s ease,color .2s ease;
}
.wrap{max-width:1080px;margin:0 auto;padding:0 24px}
h1,h2,h3{font-weight:640;letter-spacing:-.02em;line-height:1.12;color:var(--ink)}
a{color:inherit;text-decoration:none}
.kicker{font-family:var(--mono);font-size:11.5px;letter-spacing:.12em;text-transform:uppercase;color:var(--muted)}
.mono{font-family:var(--mono)}

/* buttons */
.btn{font-family:var(--sans);font-weight:560;font-size:14.5px;display:inline-flex;align-items:center;justify-content:center;gap:8px;cursor:pointer;border:1px solid transparent;padding:11px 18px;border-radius:11px;transition:background .15s,border-color .15s,transform .08s,opacity .15s;white-space:nowrap}
.btn:active{transform:translateY(1px)}
.btn:disabled{opacity:.5;cursor:default}
.btn-primary{background:var(--accent);color:var(--accent-ink)}
.btn-primary:hover:not(:disabled){filter:brightness(1.05)}
.btn-ghost{background:var(--surface);color:var(--ink);border-color:var(--line-2)}
.btn-ghost:hover:not(:disabled){background:var(--surface-2)}

/* nav */
nav{position:sticky;top:0;z-index:20;background:color-mix(in srgb,var(--bg) 86%,transparent);backdrop-filter:saturate(1.4) blur(10px);border-bottom:1px solid var(--line)}
.nav-in{display:flex;align-items:center;justify-content:space-between;height:60px}
.brand{display:flex;align-items:center;gap:9px;font-weight:680;font-size:18px;letter-spacing:-.02em}
.brand .dot{width:8px;height:8px;border-radius:50%;background:var(--accent);display:inline-block;margin-top:2px}
.nav-links{display:flex;align-items:center;gap:8px}
.nav-links a.link{font-size:14.5px;color:var(--muted);padding:8px 10px;border-radius:9px}
.nav-links a.link:hover{color:var(--ink);background:var(--surface-2)}
.theme-btn{width:36px;height:36px;border-radius:10px;border:1px solid var(--line-2);background:var(--surface);color:var(--ink-2);cursor:pointer;display:inline-flex;align-items:center;justify-content:center}
.theme-btn:hover{background:var(--surface-2)}
.theme-btn svg{width:17px;height:17px}
.icon-sun{display:none}[data-theme="dark"] .icon-sun{display:block}[data-theme="dark"] .icon-moon{display:none}

/* footer */
footer{border-top:1px solid var(--line);margin-top:64px}
.foot-in{display:flex;align-items:center;justify-content:space-between;gap:16px;flex-wrap:wrap;padding:22px 0;font-family:var(--mono);font-size:12px;color:var(--faint)}
.foot-in a:hover{color:var(--ink)}

/* inputs */
.field,.prompt{width:100%;font-family:var(--sans);font-size:15.5px;color:var(--ink);background:var(--surface);border:1px solid var(--line-2);border-radius:12px;padding:13px 15px;outline:none;transition:border-color .15s,box-shadow .15s}
.field::placeholder,.prompt::placeholder{color:var(--faint)}
.field:focus,.prompt:focus{border-color:var(--accent);box-shadow:var(--ring)}
.prompt{min-height:120px;line-height:1.5;resize:vertical}

/* ---------- landing ---------- */
.hero{padding:72px 0 40px}
.hero h1{font-size:clamp(34px,5vw,54px);max-width:16ch;margin:14px 0 16px}
.hero .sub{font-size:18px;color:var(--muted);max-width:52ch;margin-bottom:26px}
.herobox{display:flex;flex-direction:column;gap:10px;max-width:560px}
.herobox .prompt{min-height:96px}
.hero .note{font-family:var(--mono);font-size:12px;color:var(--faint);margin-top:12px}
.hero-accent{color:var(--accent)}

.steps{display:grid;grid-template-columns:repeat(3,1fr);gap:16px;margin:64px 0}
.step{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-lg);padding:24px}
.step .sn{font-family:var(--mono);font-size:12px;color:var(--accent);margin-bottom:12px}
.step h3{font-size:17px;margin-bottom:6px}
.step p{font-size:14.5px;color:var(--muted)}

.cta{position:relative;overflow:hidden;border:1px solid var(--line-2);background:var(--surface-2);border-radius:24px;padding:56px 28px;text-align:center;margin-top:8px}
.cta h2{font-size:clamp(26px,3.4vw,38px);margin-bottom:10px}
.cta p{color:var(--muted);max-width:44ch;margin:0 auto 22px}

/* ---------- shared page heads ---------- */
.phead{max-width:640px;margin:44px auto 0}
.phead h1{font-size:clamp(28px,4vw,40px)}
.phead .lead{color:var(--muted);margin:10px 0 20px;font-size:16.5px}
.samples{display:flex;flex-wrap:wrap;gap:8px;margin-top:12px}
.samples button{background:var(--surface);color:var(--ink-2);border:1px solid var(--line-2);font-family:var(--sans);font-size:13px;padding:7px 13px;border-radius:100px;cursor:pointer;transition:border-color .15s,background .15s}
.samples button:hover{border-color:var(--accent);color:var(--ink)}
.row{display:flex;align-items:center;gap:12px;margin-top:14px;flex-wrap:wrap}
.err{color:#dc2626;font-size:13.5px}[data-theme="dark"] .err{color:#f87171}

/* ---------- builder: two panels ---------- */
.intro{max-width:640px;margin:48px auto 0}
.intro h1{font-size:clamp(28px,4vw,42px)}
.intro .lead{color:var(--muted);margin:10px 0 18px;font-size:16.5px}
.loadwrap{max-width:760px;margin:56px auto}
.thinking{display:inline-flex;align-items:center;gap:10px;color:var(--muted);font-size:14.5px}
.dot-pulse{width:8px;height:8px;border-radius:50%;background:var(--accent);animation:pulse 1s ease-in-out infinite}
@keyframes pulse{0%,100%{opacity:.35;transform:scale(.85)}50%{opacity:1;transform:scale(1)}}

.builder{max-width:1120px;margin:40px auto 0;display:grid;grid-template-columns:minmax(0,1fr) minmax(0,1fr);gap:20px;align-items:start}
.panel{background:var(--surface);border:1px solid var(--line);border-radius:var(--radius-lg);padding:22px;box-shadow:var(--shadow)}
.left{position:sticky;top:80px}

.score-head{display:flex;align-items:center;justify-content:space-between;gap:12px;margin-bottom:14px}
.tag{font-family:var(--mono);font-size:11px;letter-spacing:.06em;color:var(--accent);background:var(--accent-soft);border:1px solid var(--accent-line);border-radius:100px;padding:4px 11px}
.scorebox{display:flex;align-items:baseline;gap:5px}
.scorebox .num{font-weight:680;font-size:34px;line-height:1;letter-spacing:-.03em;font-variant-numeric:tabular-nums}
.scorebox .den{font-family:var(--mono);font-size:12px;color:var(--faint)}
.bar{height:6px;background:var(--surface-2);border:1px solid var(--line);border-radius:100px;overflow:hidden;margin-bottom:18px}
.bar>i{display:block;height:100%;border-radius:100px;background:var(--accent);transition:width .5s cubic-bezier(.4,0,.2,1)}

.slots{display:flex;flex-direction:column;gap:8px}
.slot{border:1px solid var(--line);border-radius:12px;padding:13px 15px;background:var(--surface);transition:border-color .2s,background .2s,box-shadow .2s}
.slot.current{border-color:var(--accent);background:var(--accent-soft);box-shadow:var(--ring)}
[data-theme="dark"] .slot.current{background:var(--accent-soft)}
.slab{display:flex;align-items:center;gap:9px}
.slab .sm{width:16px;height:16px;flex:none;border-radius:50%;border:1.5px solid var(--line-2);display:inline-flex;align-items:center;justify-content:center;font-size:10px;color:var(--muted)}
.slot.filled .slab .sm{background:var(--good);border-color:var(--good);color:#fff}
.slot.current .slab .sm{border-color:var(--accent);color:var(--accent)}
.slab .sname{font-weight:560;font-size:14.5px;color:var(--ink)}
.slab .sw{margin-left:auto;font-family:var(--mono);font-size:10px;color:var(--faint)}
.sval{font-size:14px;color:var(--ink-2);margin-top:6px;padding-left:25px;line-height:1.45}
.sval .empty{color:var(--faint)}

.finalwrap{margin-top:2px}
.fhead{display:flex;align-items:center;justify-content:space-between;margin-bottom:12px}
.finaltext{white-space:pre-wrap;font-size:15px;line-height:1.6;color:var(--ink);background:var(--surface-2);border:1px solid var(--line);border-radius:12px;padding:18px}
.copybtn{font-family:var(--sans);font-weight:560;font-size:13px;background:var(--accent);color:var(--accent-ink);border:none;border-radius:9px;padding:8px 14px;cursor:pointer;transition:filter .15s}
.copybtn:hover{filter:brightness(1.05)}.copybtn.done{background:var(--good)}

.right{min-height:300px;display:flex;flex-direction:column}
.progress{font-family:var(--mono);font-size:11px;letter-spacing:.08em;text-transform:uppercase;color:var(--faint);margin-bottom:12px}
.qtext{font-weight:620;font-size:clamp(19px,2.4vw,23px);line-height:1.25;margin-bottom:18px;letter-spacing:-.01em}
.opts{display:flex;flex-direction:column;gap:9px;margin-bottom:14px}
.opt{text-align:left;background:var(--surface);border:1px solid var(--line-2);border-radius:11px;padding:13px 15px;font-family:var(--sans);font-size:15px;color:var(--ink);cursor:pointer;transition:border-color .15s,background .15s}
.opt:hover{border-color:var(--accent);background:var(--accent-soft)}
.own{display:flex;gap:8px;margin-bottom:16px}
.own .field{flex:1;min-width:0}
.ownbtn{white-space:nowrap;padding:11px 16px}
.skip{margin-top:auto;align-self:flex-start;background:none;border:none;color:var(--muted);font-family:var(--sans);font-size:13.5px;cursor:pointer;padding:6px 0;display:inline-flex;align-items:center;gap:6px}
.skip:hover{color:var(--ink)}
.donewrap h2{font-size:22px;margin:4px 0 6px}
.donewrap .lead{color:var(--muted);font-size:15px;margin-bottom:16px}

/* ---------- analyzer (quick mode) ---------- */
.app{max-width:720px;margin:40px auto 0}
.result{margin-top:26px;display:none}
.result.show{display:block;animation:rise .4s cubic-bezier(.4,0,.2,1) both}
@keyframes rise{from{opacity:0;transform:translateY(10px)}to{opacity:1;transform:none}}
.res-head{display:flex;align-items:center;justify-content:space-between;gap:14px;margin-bottom:6px}
.gaps{margin:16px 0}
.gaps .g{display:flex;gap:9px;align-items:center;padding:5px 0;font-size:14.5px;color:var(--ink-2)}
.gaps .g .x{color:var(--accent)}
.improved-card{background:var(--surface);border:1px solid var(--line);border-radius:14px;padding:20px;margin-top:12px;box-shadow:var(--shadow)}
.improved-text{white-space:pre-wrap;font-size:15px;line-height:1.6}
.changed{font-family:var(--mono);font-size:11.5px;color:var(--faint);margin-top:12px}
.changed .c{display:inline-block;background:var(--surface-2);border:1px solid var(--line);border-radius:100px;padding:3px 9px;margin:0 5px 5px 0}
.meta{font-family:var(--mono);font-size:11px;color:var(--faint);margin-top:12px}

@media (max-width:880px){
  .builder{grid-template-columns:1fr;gap:14px}
  .left{position:static;order:2}.right{order:1}
  .steps{grid-template-columns:1fr}
}
@media (prefers-reduced-motion:reduce){*{animation:none!important;transition:none!important}}

/* ---------- bold centered hero (light + dark) ---------- */
.hero{position:relative;overflow:hidden;padding:0}
.hero-in{position:relative;z-index:1;text-align:center;padding:96px 24px 84px;max-width:820px}
.hero-in .kicker{margin-bottom:18px}
.hero-in h1{font-size:clamp(44px,7vw,78px);letter-spacing:-.035em;line-height:1.02;margin:0 auto 18px;max-width:14ch}
.hero-in .sub{font-size:clamp(16px,2vw,19px);color:var(--muted);max-width:56ch;margin:0 auto 34px}
.hero-in .note{margin-top:16px}
.hero-accent{color:var(--accent)}
/* the atmospheric glow — soft on light, dramatic on dark */
.hero-glow{position:absolute;inset:0;z-index:0;pointer-events:none;
  background:
    radial-gradient(680px 380px at 50% -8%, color-mix(in srgb,var(--accent) 22%,transparent), transparent 70%),
    radial-gradient(1000px 500px at 50% 120%, color-mix(in srgb,var(--accent) 10%,transparent), transparent 70%);}
[data-theme="dark"] .hero-glow{
  background:
    radial-gradient(720px 420px at 50% -5%, color-mix(in srgb,var(--accent) 42%,transparent), transparent 68%),
    radial-gradient(1200px 620px at 50% 128%, color-mix(in srgb,var(--accent) 30%,transparent), transparent 70%);}
/* the big input */
.hero-input{position:relative;max-width:640px;margin:0 auto;display:flex;align-items:flex-end;gap:0;
  background:var(--surface);border:1px solid var(--line-2);border-radius:18px;padding:6px;box-shadow:var(--shadow);transition:border-color .15s,box-shadow .15s}
.hero-input:focus-within{border-color:var(--accent);box-shadow:var(--ring),var(--shadow)}
.hero-input textarea{flex:1;min-height:88px;max-height:220px;resize:none;border:none;outline:none;background:transparent;color:var(--ink);font-family:var(--sans);font-size:16.5px;line-height:1.5;padding:14px 14px}
.hero-input textarea::placeholder{color:var(--faint)}
.hero-input button{flex:none;width:44px;height:44px;margin:0 4px 4px 0;border:none;border-radius:12px;background:var(--accent);color:var(--accent-ink);cursor:pointer;display:inline-flex;align-items:center;justify-content:center;transition:filter .15s,transform .08s}
.hero-input button:hover{filter:brightness(1.06)}
.hero-input button:active{transform:translateY(1px)}
.hero-input button svg{width:20px;height:20px}