/* Website Agent — brand tokens + base components
   Source of truth: ./design.md · Locked 2026-09-28
   Purple + white + black only. NO green. NO second accent. */

@font-face{
  font-family:'Plus Jakarta Sans';
  src:url('assets/fonts/PlusJakartaSans-Variable-latin.woff2') format('woff2');
  font-weight:200 800; font-style:normal; font-display:swap;
}

:root{
  /* purple scale — 700 is the brand (sampled from Krish's shirt) */
  --p-50:#F6EFFB; --p-100:#EBDDF6; --p-200:#D6BBEC; --p-300:#BB8FDD; --p-400:#9C5FC9;
  --p-500:#7A34AE; --p-600:#6A2699; --p-700:#591B86; --p-800:#451468; --p-900:#2E0D47; --p-950:#1A0729;

  /* neutrals (purple-biased) */
  --black:#0B0810; --white:#FFFFFF;

  /* semantic roles — light theme */
  --bg:#FFFFFF; --surface:#FAF7FD; --surface-2:#F2ECF8;
  --ink:#0B0810; --ink-2:#4A4356; --ink-3:#6E6580;
  --line:#E6DEEF; --line-strong:#CFC3DD;
  --brand:#591B86; --brand-hover:#451468; --brand-press:#2E0D47; --on-brand:#FFFFFF;
  --brand-soft:#F1E6FA; --brand-text:#591B86;
  --focus:#9C5FC9;
  --danger:#B42318; --danger-soft:#FEE9E7;

  /* font */
  --font:'Plus Jakarta Sans',system-ui,-apple-system,'Segoe UI',sans-serif;

  /* radius */
  --r-xs:8px; --r-sm:14px; --r:20px; --r-lg:28px; --r-pill:999px; --r-tile:24%;

  /* spacing (8-pt) */
  --s-1:4px; --s-2:8px; --s-3:12px; --s-4:16px; --s-5:24px; --s-6:32px; --s-7:48px; --s-8:64px; --s-9:96px;

  /* elevation — purple-tinted, never pure black */
  --shadow-sm:0 1px 2px rgba(26,7,41,.06),0 4px 12px -6px rgba(26,7,41,.14);
  --shadow-md:0 2px 4px rgba(26,7,41,.05),0 14px 32px -14px rgba(26,7,41,.28);
  --shadow-lg:0 30px 70px -24px rgba(26,7,41,.45);

  /* motion */
  --ease:cubic-bezier(.2,.7,.2,1); --t-fast:150ms; --t:220ms;

  /* the only gradient: purple to deep purple. decorative only */
  --grad:linear-gradient(135deg,var(--p-600),var(--p-900));
}

@media (prefers-color-scheme:dark){
  :root:not([data-theme="light"]){
    --bg:#0B0810; --surface:#140F1C; --surface-2:#1D1628;
    --ink:#FFFFFF; --ink-2:#C9C0D6; --ink-3:#948AA5;
    --line:#2B2238; --line-strong:#3D3050;
    --brand:#7A34AE; --brand-hover:#9C5FC9; --brand-press:#BB8FDD; --on-brand:#FFFFFF;
    --brand-soft:#2A1740; --brand-text:#BB8FDD;
    --focus:#BB8FDD;
    --danger:#F97066; --danger-soft:#3A1614;
    --shadow-sm:0 1px 2px rgba(0,0,0,.4),0 4px 12px -6px rgba(0,0,0,.5);
    --shadow-md:0 2px 4px rgba(0,0,0,.4),0 14px 32px -14px rgba(0,0,0,.6);
    --shadow-lg:0 30px 70px -24px rgba(0,0,0,.7);
  }
}
:root[data-theme="dark"]{
  --bg:#0B0810; --surface:#140F1C; --surface-2:#1D1628;
  --ink:#FFFFFF; --ink-2:#C9C0D6; --ink-3:#948AA5;
  --line:#2B2238; --line-strong:#3D3050;
  --brand:#7A34AE; --brand-hover:#9C5FC9; --brand-press:#BB8FDD; --on-brand:#FFFFFF;
  --brand-soft:#2A1740; --brand-text:#BB8FDD;
  --focus:#BB8FDD;
  --danger:#F97066; --danger-soft:#3A1614;
  --shadow-sm:0 1px 2px rgba(0,0,0,.4),0 4px 12px -6px rgba(0,0,0,.5);
  --shadow-md:0 2px 4px rgba(0,0,0,.4),0 14px 32px -14px rgba(0,0,0,.6);
  --shadow-lg:0 30px 70px -24px rgba(0,0,0,.7);
}

/* ---- base ---- */
*{box-sizing:border-box}
body{margin:0;background:var(--bg);color:var(--ink);font-family:var(--font);font-size:16px;line-height:1.6;-webkit-font-smoothing:antialiased}
h1,h2,h3,h4{font-weight:800;letter-spacing:-.035em;line-height:1.05;margin:0;text-wrap:balance}
h1{font-size:clamp(40px,7vw,72px);letter-spacing:-.045em;line-height:1.0}
h2{font-size:clamp(28px,4.5vw,44px);letter-spacing:-.035em}
h3{font-size:22px;font-weight:700;letter-spacing:-.02em;line-height:1.25}
p{margin:0;max-width:65ch}
.accent{color:var(--brand-text)}
.eyebrow{font-size:12px;font-weight:700;letter-spacing:.09em;text-transform:uppercase;color:var(--brand-text)}
:focus-visible{outline:3px solid var(--focus);outline-offset:2px}

/* ---- buttons ---- */
.btn{font-family:inherit;font-weight:700;font-size:15px;height:48px;padding-inline:var(--s-5);border-radius:var(--r-pill);border:1.5px solid transparent;cursor:pointer;display:inline-flex;align-items:center;justify-content:center;gap:var(--s-2);text-decoration:none;transition:background var(--t-fast) var(--ease),color var(--t-fast) var(--ease),border-color var(--t-fast) var(--ease),transform var(--t-fast) var(--ease)}
.btn:active{transform:translateY(1px)}
.btn-primary{background:var(--brand);color:var(--on-brand)}
.btn-primary:hover{background:var(--brand-hover)}
.btn-secondary{background:transparent;color:var(--ink);border-color:var(--ink)}
.btn-secondary:hover{background:var(--ink);color:var(--bg)}
.btn-ghost{background:var(--brand-soft);color:var(--brand-text)}
.btn-ghost:hover{background:var(--p-100)}
.btn-black{background:var(--black);color:var(--white)}
.btn-sm{height:40px;padding-inline:var(--s-4);font-size:14px}
.btn-lg{height:56px;padding-inline:32px;font-size:16px}
.btn[disabled]{opacity:.45;cursor:not-allowed}

/* ---- pill / badge ---- */
.pill{display:inline-flex;align-items:center;gap:var(--s-2);height:30px;padding-inline:14px;border-radius:var(--r-pill);background:var(--brand-soft);color:var(--brand-text);font-size:12px;font-weight:700;letter-spacing:.06em;text-transform:uppercase}
.pill-solid{background:var(--brand);color:var(--on-brand)}
.pill-outline{background:transparent;border:1.5px solid var(--brand-text)}

/* ---- input ---- */
.input{font-family:inherit;font-size:15px;height:48px;width:100%;padding-inline:var(--s-4);border-radius:var(--r-sm);border:1.5px solid var(--line-strong);background:var(--bg);color:var(--ink);transition:border-color var(--t-fast) var(--ease),box-shadow var(--t-fast) var(--ease)}
.input::placeholder{color:var(--ink-3)}
.input:focus{outline:none;border-color:var(--brand);box-shadow:0 0 0 4px color-mix(in srgb,var(--brand) 18%,transparent)}
.input[aria-invalid="true"]{border-color:var(--danger)}

/* ---- card ---- */
.card{background:var(--bg);border:1px solid var(--line);border-radius:var(--r);padding:var(--s-5)}
.card-raised{box-shadow:var(--shadow-md);border-color:transparent}
.card-tint{background:var(--surface)}

/* ---- chat widget ---- */
.widget{width:100%;max-width:360px;border-radius:var(--r);background:var(--bg);border:1px solid var(--line);box-shadow:var(--shadow-lg);overflow:hidden}
.widget-head{display:flex;align-items:center;gap:var(--s-3);padding:14px var(--s-4);background:var(--brand);color:var(--on-brand)}
.widget-body{display:flex;flex-direction:column;gap:10px;padding:var(--s-4);background:var(--surface)}
.bubble{padding:10px 14px;border-radius:18px;font-size:14px;line-height:1.45;max-width:85%}
.bubble-agent{align-self:flex-start;background:var(--bg);border:1px solid var(--line);color:var(--ink);border-bottom-left-radius:4px}
.bubble-user{background:var(--brand);color:var(--on-brand);align-self:flex-end;border-bottom-right-radius:4px}
.typing{display:inline-flex;gap:4px;padding:12px 14px;width:auto}
.typing i{width:6px;height:6px;border-radius:50%;background:var(--brand-text);animation:blink 1.2s infinite var(--ease)}
.typing i:nth-child(2){animation-delay:.15s}.typing i:nth-child(3){animation-delay:.3s}
@keyframes blink{0%,60%,100%{opacity:.25}30%{opacity:1}}
@media (prefers-reduced-motion:reduce){.typing i{animation:none;opacity:.6}*{transition:none!important}}