/* ===========================================================================
   LusoChat — landing site styles
   Brand: dark canvas (#07070F) + purple (#5B4DF0) · Hanken Grotesk + JetBrains Mono
   =========================================================================== */

:root {
  --bg:        #07070F;
  --bg-soft:   #0A0A12;
  --raised:    #12121B;
  --surface:   #16161F;
  --surface-2: #1C1C26;
  --hairline:  #2A2A36;
  --hairline-soft: #21212B;

  --purple:       #5B4DF0;
  --purple-light: #A99BFF;
  --purple-soft:  #C9BEFF;
  --mint:  #3DD68C;
  --teal:  #7DD3C0;
  --amber: #F2A33C;
  --gold:  #F2C16B;
  --pink:  #C44FB4;
  --blue:  #5BA8FF;

  --text:   #F4F4F8;
  --text-2: #A2A6B4;
  --text-3: #6B7280;

  --grad: linear-gradient(135deg, var(--purple-light), var(--purple));
  --grad-soft: linear-gradient(135deg, rgba(169,155,255,.16), rgba(91,77,240,.16));

  --radius: 20px;
  --radius-sm: 14px;
  --maxw: 1140px;

  --font: "Hanken Grotesk", -apple-system, BlinkMacSystemFont, "Segoe UI", system-ui, sans-serif;
  --mono: "JetBrains Mono", ui-monospace, "SF Mono", Menlo, monospace;
}

/* ---------- reset ---------- */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
body {
  font-family: var(--font);
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
  letter-spacing: -0.011em;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}
img, svg { display: block; max-width: 100%; }
a { color: inherit; text-decoration: none; }
ul { list-style: none; }

/* ---------- background glow ---------- */
body::before {
  content: "";
  position: fixed;
  inset: 0;
  z-index: -1;
  background:
    radial-gradient(60% 50% at 50% -8%, rgba(91,77,240,.28), transparent 70%),
    radial-gradient(40% 40% at 92% 8%, rgba(196,79,180,.12), transparent 70%),
    var(--bg);
  pointer-events: none;
}

/* ---------- layout ---------- */
.container { width: 100%; max-width: var(--maxw); margin: 0 auto; padding: 0 24px; }
section { padding: 96px 0; }
.eyebrow {
  font: 600 0.78rem/1 var(--font);
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--purple-light);
  margin-bottom: 16px;
}
.section-head { max-width: 680px; margin: 0 auto 56px; text-align: center; }
.section-head h2 { font-size: clamp(1.9rem, 4vw, 2.7rem); }
.section-head p { color: var(--text-2); font-size: 1.08rem; margin-top: 14px; }

h1, h2, h3, h4 { font-weight: 700; letter-spacing: -0.03em; line-height: 1.08; }
.grad-text {
  background: var(--grad);
  -webkit-background-clip: text; background-clip: text;
  -webkit-text-fill-color: transparent; color: transparent;
}
.mono { font-family: var(--mono); }

/* ---------- buttons ---------- */
.btn {
  display: inline-flex; align-items: center; gap: 8px;
  font: 600 0.98rem/1 var(--font);
  padding: 13px 22px;
  border-radius: 999px;
  border: 1px solid transparent;
  cursor: pointer;
  transition: transform .15s ease, box-shadow .2s ease, background .2s ease, border-color .2s ease;
  white-space: nowrap;
}
.btn-primary {
  background: var(--grad);
  color: #fff;
  box-shadow: 0 10px 30px -8px rgba(91,77,240,.6);
}
.btn-primary:hover { transform: translateY(-2px); box-shadow: 0 16px 40px -10px rgba(91,77,240,.7); }
.btn-ghost {
  background: rgba(255,255,255,.04);
  border-color: var(--hairline);
  color: var(--text);
}
.btn-ghost:hover { background: rgba(255,255,255,.08); border-color: var(--purple); transform: translateY(-2px); }

/* ---------- nav ---------- */
.nav {
  position: sticky; top: 0; z-index: 50;
  backdrop-filter: saturate(160%) blur(16px);
  -webkit-backdrop-filter: saturate(160%) blur(16px);
  background: rgba(7,7,15,.66);
  border-bottom: 1px solid var(--hairline-soft);
}
.nav-inner { display: flex; align-items: center; justify-content: space-between; height: 66px; }
.brand { display: flex; align-items: center; gap: 11px; font-weight: 700; font-size: 1.12rem; letter-spacing: -0.02em; }
.brand img { width: 32px; height: 32px; filter: drop-shadow(0 4px 10px rgba(91,77,240,.45)); }
.nav-links { display: flex; align-items: center; gap: 32px; }
.nav-links a { color: var(--text-2); font-weight: 500; font-size: 0.95rem; transition: color .15s; }
.nav-links a:hover { color: var(--text); }
.nav-cta { display: flex; align-items: center; gap: 14px; }

/* ---------- hero ---------- */
.hero { padding: 80px 0 60px; }
.hero-grid { display: grid; grid-template-columns: 1.05fr 0.95fr; gap: 56px; align-items: center; }
.hero h1 { font-size: clamp(2.5rem, 6vw, 4.1rem); margin-bottom: 22px; }
.hero p.lede { font-size: 1.2rem; color: var(--text-2); max-width: 540px; margin-bottom: 32px; }
.hero-actions { display: flex; flex-wrap: wrap; gap: 14px; align-items: center; }
.pill-badge {
  display: inline-flex; align-items: center; gap: 8px;
  font-size: 0.82rem; font-weight: 600; color: var(--purple-light);
  background: var(--grad-soft);
  border: 1px solid rgba(169,155,255,.28);
  padding: 7px 14px; border-radius: 999px; margin-bottom: 26px;
}
.pill-badge .dot { width: 7px; height: 7px; border-radius: 50%; background: var(--mint); box-shadow: 0 0 8px var(--mint); }
.hero-note { margin-top: 18px; color: var(--text-3); font-size: 0.88rem; }

/* ---------- phone mockup ---------- */
.device {
  width: 340px; max-width: 100%; margin: 0 auto;
  aspect-ratio: 340 / 712;
  background: #050509;
  border-radius: 46px;
  padding: 12px;
  border: 1px solid #2c2c3a;
  box-shadow: 0 40px 90px -30px rgba(0,0,0,.8), 0 0 0 1px rgba(255,255,255,.03) inset;
  position: relative;
}
.device::after {
  content: ""; position: absolute; top: 20px; left: 50%; transform: translateX(-50%);
  width: 108px; height: 26px; background: #050509; border-radius: 14px; z-index: 3;
}
.screen {
  height: 100%; border-radius: 36px; overflow: hidden; position: relative;
  background:
    radial-gradient(70% 40% at 50% 0%, rgba(91,77,240,.28), transparent 60%),
    var(--bg);
  padding: 46px 16px 16px;
  display: flex; flex-direction: column;
}
.scr-top { display: flex; align-items: center; justify-content: center; position: relative; margin-bottom: 22px; }
.scr-ham, .scr-avatar { position: absolute; width: 30px; height: 30px; border-radius: 50%; display: grid; place-items: center; }
.scr-ham { left: 0; background: rgba(255,255,255,.05); border: 1px solid var(--hairline); color: var(--text-2); font-size: 13px; }
.scr-avatar { right: 0; background: var(--grad); color: #fff; font-size: 12px; font-weight: 700; }
.scr-pill {
  display: inline-flex; align-items: center; gap: 7px;
  background: rgba(255,255,255,.06); border: 1px solid var(--hairline);
  padding: 7px 13px; border-radius: 999px; font-size: 0.78rem; font-weight: 600;
}
.scr-pill .dot { width: 9px; height: 9px; border-radius: 50%; background: var(--purple-light); }
.scr-greet { font-size: 1.7rem; font-weight: 700; letter-spacing: -0.03em; line-height: 1.1; }
.scr-sub { color: var(--text-2); font-size: 0.85rem; margin: 4px 0 16px; }
.scr-cards { display: grid; grid-template-columns: 1fr 1fr; gap: 9px; }
.scr-card {
  background: var(--surface); border: 1px solid var(--hairline-soft);
  border-radius: 15px; padding: 11px; min-height: 92px;
  display: flex; flex-direction: column; justify-content: space-between;
}
.scr-ic { width: 26px; height: 26px; border-radius: 7px; display: grid; place-items: center; font-size: 12px; }
.scr-card b { font-size: 0.8rem; font-weight: 600; line-height: 1.25; }
.scr-card span { font-size: 0.6rem; letter-spacing: .1em; color: var(--text-3); font-weight: 600; }
.scr-spacer { flex: 1; }
.scr-chips { display: flex; gap: 7px; margin-bottom: 10px; }
.scr-chip {
  display: inline-flex; align-items: center; gap: 5px;
  font-size: 0.66rem; font-weight: 600; color: var(--text-2);
  background: rgba(255,255,255,.05); border: 1px solid var(--hairline);
  padding: 5px 10px; border-radius: 999px;
}
.scr-composer {
  display: flex; align-items: center; gap: 9px;
  background: rgba(255,255,255,.05); border: 1px solid var(--hairline);
  border-radius: 999px; padding: 9px 9px 9px 14px;
}
.scr-composer .ph { flex: 1; color: var(--text-3); font-size: 0.8rem; }
.scr-send { width: 30px; height: 30px; border-radius: 50%; background: var(--grad); display: grid; place-items: center; color: #fff; font-size: 13px; }

/* ---------- trust / platforms strip ---------- */
.strip { padding: 0 0 30px; }
.platforms { display: flex; justify-content: center; gap: 30px; flex-wrap: wrap; color: var(--text-2); font-weight: 500; }
.platforms span { display: inline-flex; align-items: center; gap: 9px; font-size: 0.95rem; }
.platforms svg { width: 17px; height: 17px; fill: var(--text-2); }

/* ---------- features ---------- */
.features-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 18px; }
.feature {
  background: linear-gradient(180deg, rgba(255,255,255,.025), rgba(255,255,255,0));
  border: 1px solid var(--hairline-soft);
  border-radius: var(--radius);
  padding: 26px;
  transition: border-color .2s, transform .2s, background .2s;
}
.feature:hover { border-color: rgba(169,155,255,.4); transform: translateY(-3px); background: linear-gradient(180deg, rgba(91,77,240,.06), rgba(255,255,255,0)); }
.feature .ic {
  width: 46px; height: 46px; border-radius: 13px; display: grid; place-items: center;
  margin-bottom: 18px; font-size: 20px;
}
.feature h3 { font-size: 1.15rem; margin-bottom: 9px; }
.feature p { color: var(--text-2); font-size: 0.96rem; }

/* tint helpers */
.t-purple { background: rgba(91,77,240,.16); color: var(--purple-light); }
.t-mint   { background: rgba(61,214,140,.15); color: var(--mint); }
.t-amber  { background: rgba(242,163,60,.15); color: var(--amber); }
.t-pink   { background: rgba(196,79,180,.16); color: var(--pink); }
.t-blue   { background: rgba(91,168,255,.15); color: var(--blue); }
.t-teal   { background: rgba(125,211,192,.15); color: var(--teal); }

/* ---------- models ---------- */
.models { background: var(--bg-soft); border-top: 1px solid var(--hairline-soft); border-bottom: 1px solid var(--hairline-soft); }
.model-grid { display: grid; grid-template-columns: repeat(4, 1fr); gap: 12px; }
.model-chip {
  display: flex; align-items: center; gap: 12px;
  background: var(--surface); border: 1px solid var(--hairline-soft);
  border-radius: var(--radius-sm); padding: 16px 18px;
}
.model-chip .mk {
  width: 38px; height: 38px; border-radius: 10px; flex: none;
  display: grid; place-items: center; font-weight: 700; font-size: 0.95rem; color: #fff;
}
.model-chip b { font-size: 0.95rem; font-weight: 600; }
.model-chip small { display: block; color: var(--text-3); font-size: 0.78rem; font-weight: 500; }
.models-note { text-align: center; color: var(--text-3); margin-top: 28px; font-size: 0.92rem; }

/* ---------- showcase split ---------- */
.split { display: grid; grid-template-columns: 1fr 1fr; gap: 56px; align-items: center; }
.split h2 { font-size: clamp(1.7rem, 3.4vw, 2.4rem); margin-bottom: 18px; }
.split p { color: var(--text-2); font-size: 1.06rem; margin-bottom: 16px; }
.check-list li { display: flex; gap: 12px; align-items: flex-start; margin: 12px 0; color: var(--text); }
.check-list li::before {
  content: "✓"; flex: none;
  width: 24px; height: 24px; border-radius: 50%;
  background: rgba(91,77,240,.18); color: var(--purple-light);
  display: grid; place-items: center; font-size: 0.78rem; font-weight: 700; margin-top: 1px;
}
.panel {
  background: var(--surface); border: 1px solid var(--hairline-soft);
  border-radius: var(--radius); padding: 22px;
}
.code-card { background: var(--bg); border: 1px solid var(--hairline); border-radius: var(--radius-sm); overflow: hidden; }
.code-card .code-top { display: flex; align-items: center; gap: 8px; padding: 11px 14px; border-bottom: 1px solid var(--hairline); }
.code-card .code-top .d { width: 8px; height: 8px; border-radius: 50%; background: var(--purple-light); }
.code-card .code-top .lang { font: 600 0.74rem var(--mono); color: var(--purple-light); }
.code-card pre { padding: 16px; overflow-x: auto; }
.code-card code { font: 0.84rem/1.6 var(--mono); color: #d7d7e2; white-space: pre; }
.tok-key { color: var(--purple-light); }
.tok-fn  { color: var(--blue); }
.tok-str { color: var(--mint); }
.tok-com { color: var(--text-3); }

/* ---------- pricing ---------- */
.price-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 20px; max-width: 820px; margin: 0 auto; }
.price-card {
  background: var(--surface); border: 1px solid var(--hairline-soft);
  border-radius: var(--radius); padding: 32px; position: relative;
}
.price-card.featured { border-color: rgba(169,155,255,.5); background: linear-gradient(180deg, rgba(91,77,240,.1), rgba(255,255,255,0)); }
.price-tag { font-size: 0.8rem; font-weight: 700; letter-spacing: .12em; text-transform: uppercase; color: var(--purple-light); }
.price-amount { font-size: 2.6rem; font-weight: 700; letter-spacing: -0.03em; margin: 12px 0 4px; }
.price-amount small { font-size: 1rem; font-weight: 500; color: var(--text-3); }
.price-desc { color: var(--text-2); margin-bottom: 20px; font-size: 0.96rem; }
.price-card ul li { display: flex; gap: 10px; align-items: center; color: var(--text); margin: 11px 0; font-size: 0.95rem; }
.price-card ul li::before { content: "✓"; color: var(--mint); font-weight: 700; }
.price-soon { position: absolute; top: 18px; right: 18px; font-size: 0.7rem; font-weight: 700; letter-spacing: .1em; color: var(--gold); background: rgba(242,193,107,.14); padding: 5px 10px; border-radius: 999px; }

/* ---------- CTA ---------- */
.cta {
  text-align: center;
  background: var(--grad-soft);
  border: 1px solid rgba(169,155,255,.28);
  border-radius: 28px;
  padding: 64px 32px;
  max-width: 880px; margin: 0 auto;
}
.cta h2 { font-size: clamp(1.9rem, 4vw, 2.7rem); margin-bottom: 14px; }
.cta p { color: var(--text-2); font-size: 1.1rem; margin-bottom: 28px; }

/* ---------- footer ---------- */
.footer { border-top: 1px solid var(--hairline-soft); padding: 56px 0 40px; background: var(--bg-soft); }
.footer-grid { display: flex; justify-content: space-between; gap: 40px; flex-wrap: wrap; margin-bottom: 36px; }
.footer-brand { max-width: 300px; }
.footer-brand p { color: var(--text-3); font-size: 0.92rem; margin-top: 12px; }
.footer-cols { display: flex; gap: 64px; flex-wrap: wrap; }
.footer-col h4 { font-size: 0.78rem; letter-spacing: .12em; text-transform: uppercase; color: var(--text-3); margin-bottom: 14px; font-weight: 600; }
.footer-col a { display: block; color: var(--text-2); font-size: 0.94rem; margin: 9px 0; transition: color .15s; }
.footer-col a:hover { color: var(--text); }
.footer-bottom { display: flex; justify-content: space-between; align-items: center; gap: 16px; flex-wrap: wrap; border-top: 1px solid var(--hairline-soft); padding-top: 24px; color: var(--text-3); font-size: 0.86rem; }

/* ---------- legal / prose pages ---------- */
.page-hero { padding: 70px 0 30px; text-align: center; }
.page-hero h1 { font-size: clamp(2rem, 5vw, 3rem); }
.page-hero p { color: var(--text-3); margin-top: 12px; font-size: 0.95rem; }
.prose { max-width: 760px; margin: 0 auto; padding-bottom: 90px; }
.prose h2 { font-size: 1.4rem; margin: 40px 0 14px; letter-spacing: -0.02em; }
.prose h3 { font-size: 1.08rem; margin: 26px 0 10px; color: var(--purple-soft); }
.prose p { color: var(--text-2); margin: 14px 0; }
.prose ul { margin: 14px 0 14px 4px; }
.prose ul li { color: var(--text-2); padding-left: 26px; position: relative; margin: 10px 0; }
.prose ul li::before { content: ""; position: absolute; left: 6px; top: 11px; width: 6px; height: 6px; border-radius: 50%; background: var(--purple-light); }
.prose a { color: var(--purple-light); text-decoration: underline; text-underline-offset: 3px; }
.prose strong { color: var(--text); }
.prose .note {
  background: var(--surface); border: 1px solid var(--hairline-soft);
  border-left: 3px solid var(--purple); border-radius: 12px;
  padding: 16px 20px; margin: 22px 0; color: var(--text-2); font-size: 0.95rem;
}
.toc { display: flex; flex-wrap: wrap; gap: 8px; margin: 24px 0 8px; }
.toc a { font-size: 0.82rem; color: var(--text-2); background: var(--surface); border: 1px solid var(--hairline-soft); padding: 6px 13px; border-radius: 999px; text-decoration: none; }
.toc a:hover { border-color: var(--purple); color: var(--text); }

/* ---------- FAQ ---------- */
.faq { max-width: 780px; margin: 0 auto; }
.faq-item { border: 1px solid var(--hairline-soft); background: var(--surface); border-radius: var(--radius-sm); padding: 22px 24px; margin-bottom: 12px; }
.faq-item h3 { font-size: 1.06rem; margin-bottom: 8px; }
.faq-item p { color: var(--text-2); font-size: 0.96rem; }
.support-cards { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; max-width: 780px; margin: 0 auto 50px; }
.support-card { background: var(--surface); border: 1px solid var(--hairline-soft); border-radius: var(--radius); padding: 26px; }
.support-card .ic { width: 44px; height: 44px; border-radius: 12px; display: grid; place-items: center; margin-bottom: 14px; font-size: 19px; }
.support-card h3 { font-size: 1.1rem; margin-bottom: 6px; }
.support-card p { color: var(--text-2); font-size: 0.94rem; margin-bottom: 12px; }
.support-card a.link { color: var(--purple-light); font-weight: 600; font-size: 0.94rem; }

/* ---------- responsive ---------- */
@media (max-width: 920px) {
  .hero-grid, .split { grid-template-columns: 1fr; gap: 44px; }
  .hero-visual { order: -1; }
  .features-grid { grid-template-columns: 1fr 1fr; }
  .model-grid { grid-template-columns: repeat(2, 1fr); }
  .nav-links { display: none; }
}
@media (max-width: 620px) {
  section { padding: 70px 0; }
  .features-grid, .model-grid, .price-grid, .support-cards { grid-template-columns: 1fr; }
  .footer-grid { flex-direction: column; }
  .footer-cols { gap: 40px; }
  .hero h1 { font-size: 2.4rem; }
  .nav-cta .btn-ghost { display: none; }
}