:root {
  --ink: #17212b;
  --muted: #5e6b78;
  --paper: #f6f1e7;
  --card: #fffdf8;
  --line: #d9d1c2;
  --blue: #16697a;
  --blue-dark: #0f4c5c;
  --orange: #ef8354;
  --green: #2a9d6f;
  --shadow: 0 16px 40px rgba(23, 33, 43, .10);
}

* { box-sizing: border-box; }
html { color-scheme: light; }
body {
  margin: 0;
  color: var(--ink);
  background:
    radial-gradient(circle at 15% 0%, rgba(239, 131, 84, .18), transparent 27rem),
    radial-gradient(circle at 90% 12%, rgba(22, 105, 122, .16), transparent 30rem),
    var(--paper);
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  line-height: 1.55;
  min-height: 100vh;
}

a { color: var(--blue-dark); }
.shell { width: min(1120px, calc(100% - 2rem)); margin: 0 auto; }
.site-header { padding: 1.2rem 0; border-bottom: 1px solid rgba(23,33,43,.1); }
.nav { display: flex; justify-content: space-between; align-items: center; gap: 1rem; }
.brand { color: var(--ink); font-weight: 850; text-decoration: none; letter-spacing: -.03em; }
.nav-links { display: flex; flex-wrap: wrap; gap: .65rem; }
.nav-links a { text-decoration: none; font-weight: 700; font-size: .9rem; }

.hero { padding: clamp(3.5rem, 8vw, 7rem) 0 2.5rem; max-width: 820px; }
.eyebrow { color: var(--blue); font-weight: 850; text-transform: uppercase; letter-spacing: .12em; font-size: .75rem; }
h1, h2, h3 { line-height: 1.08; letter-spacing: -.035em; }
h1 { margin: .45rem 0 1rem; font-size: clamp(2.4rem, 7vw, 5.6rem); }
h2 { font-size: clamp(1.65rem, 4vw, 2.7rem); }
h3 { font-size: 1.2rem; }
.lede { max-width: 720px; color: var(--muted); font-size: clamp(1.05rem, 2vw, 1.3rem); }
.actions { display: flex; flex-wrap: wrap; gap: .7rem; margin-top: 1.5rem; }
.button, button {
  appearance: none;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: .45rem;
  border: 0;
  border-radius: 999px;
  padding: .78rem 1.1rem;
  background: var(--blue-dark);
  color: white;
  font: inherit;
  font-weight: 800;
  text-decoration: none;
  cursor: pointer;
}
.button:hover, button:hover { background: var(--blue); }
.button.secondary { background: transparent; color: var(--blue-dark); border: 1px solid var(--blue-dark); }

.grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 1rem; }
.card, .demo-panel {
  background: rgba(255, 253, 248, .88);
  border: 1px solid var(--line);
  border-radius: 1.1rem;
  box-shadow: var(--shadow);
}
.card { padding: 1.2rem; display: flex; flex-direction: column; }
.card p { color: var(--muted); flex: 1; }
.tag { display: inline-flex; align-self: flex-start; border-radius: 99px; padding: .25rem .55rem; background: rgba(42,157,111,.12); color: #176347; font-weight: 850; font-size: .72rem; }
.card-actions { display: flex; flex-wrap: wrap; gap: .5rem; margin-top: .5rem; }
.card-actions .button { font-size: .84rem; padding: .62rem .85rem; }

.section { padding: 2.5rem 0; }
.section-intro { max-width: 720px; color: var(--muted); }
.demo-main { padding: clamp(2rem, 5vw, 4rem) 0; }
.demo-panel { padding: clamp(1rem, 4vw, 2rem); }
.form-row { display: flex; flex-wrap: wrap; gap: .65rem; margin: 1rem 0; }
label { display: block; font-weight: 800; margin-bottom: .35rem; }
input, select {
  width: min(100%, 360px);
  border: 1px solid #b7ad9c;
  border-radius: .75rem;
  padding: .78rem .85rem;
  background: white;
  color: var(--ink);
  font: inherit;
}
.result { margin-top: 1.2rem; min-height: 7rem; padding: 1rem; border-radius: .85rem; background: #f0eadf; }
.status { color: var(--muted); }
.error { color: #a12c2c; font-weight: 700; }
.metric { font-size: clamp(2rem, 6vw, 4rem); font-weight: 900; line-height: 1; color: var(--blue-dark); }
.result-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(150px, 1fr)); gap: .8rem; }
.stat { padding: .8rem; border-radius: .75rem; background: rgba(255,255,255,.68); }
.stat b { display: block; font-size: 1.08rem; }
.flag, .sprite { display: block; max-width: 180px; max-height: 150px; object-fit: contain; margin: 0 auto 1rem; }
.code-note { margin-top: 1rem; padding: .85rem 1rem; border-left: 4px solid var(--orange); background: rgba(255,255,255,.55); }
.code-note code { overflow-wrap: anywhere; }
.download-help {
  margin: 1.5rem 0;
  padding: 1rem 1.2rem;
  border: 1px solid #c8bdab;
  border-left: 5px solid var(--orange);
  border-radius: .8rem;
  background: rgba(255, 253, 248, .78);
}
.download-help h3 { margin: 0 0 .45rem; }
.download-help ol { margin: .5rem 0 0; padding-left: 1.25rem; }
.download-help li + li { margin-top: .3rem; }
.footer { padding: 3rem 0; color: var(--muted); font-size: .9rem; }
.api-list { columns: 2; padding-left: 1.2rem; }

@media (max-width: 820px) {
  .grid { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 560px) {
  .grid { grid-template-columns: 1fr; }
  .nav { align-items: flex-start; }
  .api-list { columns: 1; }
}