:root {
  --navy: #07152d;
  --navy-2: #10284c;
  --gold: #d6a843;
  --gold-soft: #fff4d8;
  --bg: #f7f8fb;
  --text: #172033;
  --muted: #667085;
  --white: #ffffff;
  --border: #dde3ee;
  --shadow: 0 24px 70px rgba(7, 21, 45, 0.14);
}
* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  background: var(--bg);
  color: var(--text);
}
a { color: inherit; text-decoration: none; }
.site-header {
  position: sticky;
  top: 0;
  z-index: 10;
  backdrop-filter: blur(16px);
  background: rgba(247, 248, 251, 0.86);
  border-bottom: 1px solid rgba(221, 227, 238, 0.8);
}
.nav {
  max-width: 1120px;
  margin: auto;
  padding: 16px 20px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}
.logo { display: flex; align-items: center; gap: 10px; font-weight: 800; font-size: 1.3rem; }
.logo-mark {
  width: 36px; height: 36px; border-radius: 50%;
  display: grid; place-items: center;
  background: linear-gradient(145deg, var(--gold), #ffe39a);
  color: var(--navy);
}
.nav-links { display: flex; gap: 22px; color: var(--muted); font-weight: 600; }
.hero {
  max-width: 1120px;
  margin: auto;
  padding: 72px 20px 48px;
  display: grid;
  grid-template-columns: 1.25fr 0.75fr;
  gap: 36px;
  align-items: center;
}
.eyebrow { color: var(--gold); text-transform: uppercase; letter-spacing: .13em; font-weight: 800; font-size: .78rem; }
h1 { font-size: clamp(2.4rem, 6vw, 4.7rem); line-height: .96; margin: 10px 0 22px; color: var(--navy); }
h2 { font-size: clamp(2rem, 4vw, 3rem); margin: 8px 0 12px; color: var(--navy); }
.hero-text, .section-heading p, .learn-panel p { color: var(--muted); font-size: 1.08rem; line-height: 1.7; }
.hero-actions { display: flex; gap: 14px; flex-wrap: wrap; margin-top: 28px; }
.btn, button {
  border: 0; border-radius: 999px; padding: 13px 20px;
  font-weight: 800; cursor: pointer;
}
.primary { background: var(--navy); color: var(--white); }
.secondary { background: var(--gold-soft); color: var(--navy); }
.hero-card, .panel {
  background: var(--white);
  border: 1px solid var(--border);
  box-shadow: var(--shadow);
  border-radius: 28px;
}
.hero-card { padding: 28px; }
.rate-row { display: flex; justify-content: space-between; padding: 18px 0; border-bottom: 1px solid var(--border); gap: 18px; }
.rate-row strong { color: var(--navy); }
.hero-card small, .result-card small, footer { color: var(--muted); }
.panel, .currencies-section { max-width: 1120px; margin: 28px auto; padding: 34px 20px; }
.converter-panel, .learn-panel { padding: 38px; }
.section-heading { max-width: 760px; }
.converter-grid {
  display: grid;
  grid-template-columns: 1fr 1fr auto 1fr;
  gap: 16px;
  align-items: end;
  margin-top: 28px;
}
label { display: grid; gap: 8px; color: var(--muted); font-weight: 700; }
input, select {
  width: 100%;
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 14px 15px;
  font: inherit;
  background: var(--white);
  color: var(--text);
}
.swap { background: var(--gold-soft); color: var(--navy); border-radius: 16px; height: 52px; }
.result-card {
  margin-top: 22px;
  padding: 24px;
  border-radius: 22px;
  background: linear-gradient(135deg, var(--navy), var(--navy-2));
  color: var(--white);
}
.result-card p { margin: 0; opacity: .82; }
.result-card h3 { font-size: clamp(2rem, 5vw, 3.3rem); margin: 8px 0 10px; }
.search { max-width: 520px; margin: 18px 0 24px; }
.currency-cards {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
}
.currency-card {
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: 22px;
  padding: 20px;
  box-shadow: 0 10px 30px rgba(7, 21, 45, .06);
}
.currency-card h3 { margin: 0 0 8px; color: var(--navy); }
.currency-card p { color: var(--muted); line-height: 1.5; }
.badges { display: flex; gap: 8px; flex-wrap: wrap; margin-top: 12px; }
.badge { background: var(--gold-soft); color: var(--navy); padding: 6px 10px; border-radius: 999px; font-weight: 800; font-size: .82rem; }
.learn-panel { display: grid; grid-template-columns: 1fr 1fr; gap: 28px; align-items: center; }
.idea-list { display: grid; gap: 14px; }
.idea-list div { background: var(--bg); border: 1px solid var(--border); border-radius: 18px; padding: 16px; display: grid; gap: 6px; }
.idea-list span { color: var(--muted); }
footer { text-align: center; padding: 34px 20px 52px; }
@media (max-width: 820px) {
  .nav-links { display: none; }
  .hero, .learn-panel { grid-template-columns: 1fr; }
  .converter-grid { grid-template-columns: 1fr; }
  .swap { width: 100%; }
  .currency-cards { grid-template-columns: 1fr; }
  .converter-panel, .learn-panel { padding: 26px 20px; }
}