/* Vaaqchat — calm, focused, study-space aesthetic.
   Brand purple #5A1BA9, soft lavender tints, one signature: the chat-thread motif. */

:root{
  --purple:#5A1BA9;
  --purple-deep:#43147f;
  --purple-soft:#f3eefb;
  --purple-line:#e4d8f6;
  --lav:#faf8fe;
  --ink:#1c1726;
  --muted:#6b6478;
  --line:#ece8f2;
  --white:#ffffff;
  --gold:#ffd300;        /* accent reserved for the AI star, echoing the app */
  --radius:16px;
  --maxw:1080px;
  --display:'Fraunce', 'Georgia', serif;
}

*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
body{
  font-family:'Inter',-apple-system,BlinkMacSystemFont,'Segoe UI',Roboto,sans-serif;
  color:var(--ink);background:var(--white);line-height:1.6;-webkit-font-smoothing:antialiased;
}
a{color:inherit;text-decoration:none}
img,svg{display:block}
.wrap{max-width:var(--maxw);margin:0 auto;padding:0 24px}

/* ---- Nav ---- */
.nav{position:sticky;top:0;z-index:50;background:rgba(255,255,255,.85);backdrop-filter:blur(12px);
  border-bottom:1px solid var(--line)}
.nav-inner{display:flex;align-items:center;justify-content:space-between;height:68px}
.brand{display:flex;align-items:center;gap:11px;font-weight:700;font-size:19px;letter-spacing:-.02em}
.brand img{width:34px;height:34px;border-radius:9px}
.nav-links{display:flex;align-items:center;gap:30px}
.nav-links a{color:var(--muted);font-size:15px;font-weight:500;transition:color .15s}
.nav-links a:hover{color:var(--purple)}
.nav-cta{background:var(--purple);color:#fff !important;padding:9px 18px;border-radius:10px;font-size:14px}
.nav-toggle{display:none;background:none;border:none;font-size:24px;color:var(--ink);cursor:pointer}

/* ---- Buttons ---- */
.btn{display:inline-flex;align-items:center;gap:9px;padding:13px 22px;border-radius:12px;font-weight:600;
  font-size:15px;transition:transform .06s, box-shadow .2s, background .2s;cursor:pointer;border:none}
.btn-primary{background:var(--purple);color:#fff;box-shadow:0 6px 20px rgba(90,27,169,.22)}
.btn-primary:hover{background:var(--purple-deep)}
.btn:active{transform:translateY(1px)}
.btn-ghost{background:#fff;color:var(--ink);border:1px solid var(--line)}
.btn-ghost:hover{border-color:var(--purple-line);background:var(--lav)}

/* store buttons */
.stores{display:flex;gap:14px;flex-wrap:wrap}
.store-btn{display:flex;align-items:center;gap:11px;background:var(--ink);color:#fff;
  padding:11px 18px;border-radius:13px;transition:transform .12s, opacity .2s}
.store-btn:hover{transform:translateY(-2px)}
.store-btn.disabled{opacity:.5;cursor:default}
.store-btn .sub{font-size:11px;line-height:1.3;opacity:.8;display:block}
.store-btn .main{font-size:16px;font-weight:600;line-height:1.2;display:block}
.store-btn span{display:flex;flex-direction:column}
.store-btn svg{width:24px;height:24px;flex:none}

/* ---- Hero ---- */
.hero{position:relative;overflow:hidden;background:
  radial-gradient(1100px 500px at 80% -10%, var(--purple-soft), transparent 60%),
  radial-gradient(900px 500px at 0% 110%, #fbf6ff, transparent 55%)}
.hero-inner{display:grid;grid-template-columns:1.05fr .95fr;gap:48px;align-items:center;
  padding:84px 0 92px}
.eyebrow{display:inline-flex;align-items:center;gap:8px;background:var(--purple-soft);
  color:var(--purple);font-weight:600;font-size:13px;padding:6px 13px;border-radius:999px;margin-bottom:22px}
.eyebrow .dot{width:6px;height:6px;border-radius:50%;background:var(--purple)}
h1.hero-title{font-family:var(--display);font-weight:600;font-size:clamp(40px,6vw,62px);
  line-height:1.04;letter-spacing:-.02em;margin-bottom:20px}
h1 .accent{color:var(--purple)}
.hero p.lead{font-size:19px;color:var(--muted);max-width:30em;margin-bottom:30px}
.hero-actions{display:flex;flex-direction:column;gap:20px}

/* signature: chat-thread motif */
.thread{background:#fff;border:1px solid var(--purple-line);border-radius:22px;
  box-shadow:0 30px 70px -30px rgba(90,27,169,.35);padding:22px;max-width:380px;margin-left:auto}
.thread-head{display:flex;align-items:center;gap:10px;padding-bottom:14px;border-bottom:1px solid var(--line);margin-bottom:16px}
.thread-head .av{width:34px;height:34px;border-radius:10px;background:var(--purple-soft);
  display:grid;place-items:center;color:var(--purple);font-weight:700}
.thread-head .t{font-weight:600;font-size:15px}
.thread-head .s{font-size:12px;color:var(--muted)}
.bubble{max-width:78%;padding:10px 14px;border-radius:15px;font-size:14.5px;margin-bottom:10px;line-height:1.45}
.bubble.them{background:var(--purple-soft);color:var(--ink);border-bottom-left-radius:5px}
.bubble.me{background:var(--purple);color:#fff;margin-left:auto;border-bottom-right-radius:5px}
.ai-card{background:#fffdf2;border:1px solid #f3e7a8;border-left:3px solid var(--gold);
  border-radius:12px;padding:13px 15px;margin-top:4px}
.ai-card .lbl{font-size:11px;font-weight:700;color:#b48a00;letter-spacing:.03em;margin-bottom:5px}
.ai-card .txt{font-size:14px;color:#3a3320;font-style:italic;line-height:1.5}
.fade-up{opacity:0;transform:translateY(14px);animation:fadeUp .6s forwards}
.fade-up.d1{animation-delay:.15s}.fade-up.d2{animation-delay:.5s}
.fade-up.d3{animation-delay:.9s}.fade-up.d4{animation-delay:1.35s}
@keyframes fadeUp{to{opacity:1;transform:none}}

/* ---- Sections ---- */
.section{padding:84px 0}
.section-tint{background:var(--lav)}
.section-head{text-align:center;max-width:620px;margin:0 auto 52px}
.section-head .eyebrow{margin-bottom:16px}
h2{font-family:var(--display);font-weight:600;font-size:clamp(28px,4vw,40px);letter-spacing:-.02em;line-height:1.1}
.section-head p{color:var(--muted);font-size:17px;margin-top:14px}

/* feature grid */
.features{display:grid;grid-template-columns:repeat(3,1fr);gap:22px}
.feature{background:#fff;border:1px solid var(--line);border-radius:var(--radius);padding:26px;
  transition:transform .2s, box-shadow .2s, border-color .2s}
.feature:hover{transform:translateY(-3px);box-shadow:0 16px 40px -20px rgba(90,27,169,.3);border-color:var(--purple-line)}
.feature .ic{width:46px;height:46px;border-radius:12px;background:var(--purple-soft);
  display:grid;place-items:center;margin-bottom:16px}
.feature .ic svg{width:24px;height:24px;stroke:var(--purple)}
.feature h3{font-size:18px;font-weight:650;margin-bottom:8px}
.feature p{color:var(--muted);font-size:15px}

/* ---- CTA band ---- */
.cta-band{background:linear-gradient(135deg,var(--purple),var(--purple-deep));color:#fff;
  border-radius:26px;padding:56px 40px;text-align:center;position:relative;overflow:hidden}
.cta-band h2{color:#fff}
.cta-band p{color:#e8ddf7;font-size:17px;margin:14px auto 28px;max-width:34em}
.cta-band .stores{justify-content:center}
.cta-band .store-btn{background:#fff;color:var(--ink)}

/* ---- Footer ---- */
.footer{background:var(--ink);color:#cfc8da;padding:56px 0 32px;font-size:14.5px}
.footer-grid{display:grid;grid-template-columns:1.4fr 1fr 1fr 1fr;gap:32px;margin-bottom:40px}
.footer .brand{color:#fff;margin-bottom:14px}
.footer p{color:#9a90ab;max-width:24em}
.footer h4{color:#fff;font-size:14px;margin-bottom:14px;letter-spacing:.02em}
.footer a{color:#cfc8da;display:block;padding:5px 0;transition:color .15s}
.footer a:hover{color:#fff}
.footer-bottom{border-top:1px solid #2e2738;padding-top:24px;display:flex;justify-content:space-between;
  align-items:center;flex-wrap:wrap;gap:12px;color:#8a8098;font-size:13.5px}

/* ---- Generic content pages (about/legal/contact) ---- */
.page-hero{background:radial-gradient(800px 360px at 70% -20%,var(--purple-soft),transparent 60%);
  padding:64px 0 40px;border-bottom:1px solid var(--line)}
.page-hero h1{font-family:var(--display);font-weight:600;font-size:clamp(32px,5vw,46px);letter-spacing:-.02em}
.page-hero p{color:var(--muted);font-size:17px;margin-top:12px}
.prose{max-width:760px;margin:0 auto;padding:52px 24px 90px}
.prose h2{font-size:23px;margin:36px 0 10px}
.prose h3{font-size:18px;margin:24px 0 8px;font-family:var(--display);font-weight:600}
.prose p,.prose li{color:#2f2a3a;font-size:16px;margin:10px 0}
.prose ul{padding-left:22px}
.prose .updated{color:var(--muted);font-size:14px}
.prose .fill{background:#fff8e1;border:1px solid #f0e0a8;border-radius:6px;padding:1px 6px;font-weight:600;font-size:.9em}
.callout{background:var(--purple-soft);border:1px solid var(--purple-line);border-left:3px solid var(--purple);
  border-radius:10px;padding:14px 16px;margin:18px 0;font-size:15px}

/* ---- Contact form ---- */
.contact-grid{display:grid;grid-template-columns:1fr 1fr;gap:48px;align-items:start;max-width:900px;margin:0 auto}
.field{margin-bottom:18px}
.field label{display:block;font-weight:600;font-size:14px;margin-bottom:7px}
.field input,.field textarea{width:100%;border:1px solid var(--line);border-radius:11px;padding:12px 14px;
  font:inherit;font-size:15px;background:#fff;transition:border-color .15s}
.field input:focus,.field textarea:focus{outline:none;border-color:var(--purple)}
.field textarea{min-height:130px;resize:vertical}
.contact-info .row{display:flex;gap:13px;align-items:flex-start;margin-bottom:22px}
.contact-info .ic{width:42px;height:42px;border-radius:11px;background:var(--purple-soft);display:grid;place-items:center;flex:none}
.contact-info .ic svg{width:20px;height:20px;stroke:var(--purple)}
.contact-info .row b{display:block;font-size:15px}
.contact-info .row span{color:var(--muted);font-size:14.5px}
.form-note{font-size:13px;color:var(--muted);margin-top:10px}

:focus-visible{outline:2px solid var(--purple);outline-offset:2px}

@media (max-width:860px){
  .hero-inner{grid-template-columns:1fr;gap:40px;padding:56px 0 64px}
  .thread{margin:0 auto}
  .features{grid-template-columns:1fr;gap:16px}
  .footer-grid{grid-template-columns:1fr 1fr;gap:28px}
  .contact-grid{grid-template-columns:1fr;gap:32px}
  .nav-links{display:none;position:absolute;top:68px;left:0;right:0;background:#fff;flex-direction:column;
    align-items:flex-start;padding:16px 24px;gap:6px;border-bottom:1px solid var(--line)}
  .nav-links.open{display:flex}
  .nav-links a{padding:8px 0;width:100%}
  .nav-toggle{display:block}
}
@media (prefers-reduced-motion:reduce){*{animation:none !important;transition:none !important}}