:root {
  color-scheme: light;
  --bg: #f5f7fb;
  --bg-soft: #eef3ff;
  --surface: rgba(255, 255, 255, 0.92);
  --surface-solid: #ffffff;
  --surface-muted: #f7f9fc;
  --text: #111827;
  --text-soft: #667085;
  --border: #dce3ef;
  --border-strong: #c7d2e2;
  --primary: #165dff;
  --primary-strong: #0f46d8;
  --primary-soft: #e9f0ff;
  --success: #12a66a;
  --danger: #d92d20;
  --shadow: 0 24px 60px rgba(15, 35, 80, 0.12);
  --shadow-soft: 0 12px 30px rgba(15, 35, 80, 0.08);
  --radius-xl: 28px;
  --radius-lg: 20px;
  --radius-md: 14px;
  --focus: 0 0 0 4px rgba(22, 93, 255, 0.18);
  --transition: 180ms ease;
}

html[data-theme="dark"] {
  color-scheme: dark;
  --bg: #090e1a;
  --bg-soft: #10182a;
  --surface: rgba(17, 25, 42, 0.92);
  --surface-solid: #11192a;
  --surface-muted: #172033;
  --text: #f4f7fc;
  --text-soft: #a6b0c3;
  --border: #273349;
  --border-strong: #35445e;
  --primary: #6f9cff;
  --primary-strong: #8aafff;
  --primary-soft: #1b2c50;
  --success: #3dd598;
  --danger: #ff7a70;
  --shadow: 0 24px 70px rgba(0, 0, 0, 0.38);
  --shadow-soft: 0 12px 30px rgba(0, 0, 0, 0.24);
  --focus: 0 0 0 4px rgba(111, 156, 255, 0.22);
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  min-width: 320px;
  background:
    radial-gradient(circle at 12% 8%, rgba(22, 93, 255, 0.14), transparent 26rem),
    radial-gradient(circle at 90% 30%, rgba(82, 204, 255, 0.11), transparent 24rem),
    var(--bg);
  color: var(--text);
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  line-height: 1.5;
  transition: background-color var(--transition), color var(--transition);
}
button, input, select { font: inherit; }
button, select { cursor: pointer; }
button { color: inherit; }
a { color: inherit; }
svg { width: 1.25rem; height: 1.25rem; fill: none; stroke: currentColor; stroke-width: 1.8; stroke-linecap: round; stroke-linejoin: round; }

.app-shell { min-height: 100vh; overflow: hidden; }
.container { width: min(1160px, calc(100% - 40px)); margin-inline: auto; }
.site-header {
  display: flex; align-items: center; justify-content: space-between;
  padding-block: 24px;
}
.brand { display: inline-flex; align-items: center; gap: 11px; text-decoration: none; }
.brand img { flex: 0 0 auto; filter: drop-shadow(0 8px 16px rgba(22, 93, 255, .2)); }
.brand span { display: grid; }
.brand strong { font-size: 1.05rem; letter-spacing: -0.02em; }
.brand small { color: var(--text-soft); font-size: .75rem; }
.header-actions { display: flex; align-items: center; gap: 10px; }
.network-status { display: inline-flex; align-items: center; gap: 7px; color: var(--text-soft); font-size: .78rem; }
.status-dot { width: 8px; height: 8px; border-radius: 50%; background: var(--success); box-shadow: 0 0 0 4px color-mix(in srgb, var(--success) 16%, transparent); }
.network-status.offline .status-dot { background: #f79009; box-shadow: 0 0 0 4px rgba(247, 144, 9, .15); }
.icon-button {
  width: 42px; height: 42px; display: inline-grid; place-items: center;
  border: 1px solid var(--border); background: var(--surface-solid); border-radius: 12px;
  transition: transform var(--transition), border-color var(--transition), background var(--transition);
}
.icon-button:hover:not(:disabled) { transform: translateY(-2px); border-color: var(--primary); }
.icon-button:disabled { opacity: .45; cursor: not-allowed; }
.install-button { color: var(--primary); }
.theme-toggle { border: 0; padding: 0; background: transparent; }
.theme-track {
  width: 72px; height: 38px; display: grid; grid-template-columns: 1fr 1fr; align-items: center;
  position: relative; border: 1px solid var(--border); border-radius: 999px; background: var(--surface-solid);
  color: var(--text-soft); box-shadow: var(--shadow-soft);
}
.theme-track svg { width: 16px; height: 16px; justify-self: center; z-index: 2; }
.theme-thumb {
  width: 30px; height: 30px; position: absolute; left: 3px; top: 3px; border-radius: 50%;
  background: var(--primary); transition: transform 220ms ease;
}
html[data-theme="dark"] .theme-thumb { transform: translateX(34px); }
html[data-theme="light"] .sun-icon, html[data-theme="dark"] .moon-icon { color: white; }

.hero { display: grid; grid-template-columns: .9fr 1.1fr; align-items: center; gap: clamp(40px, 7vw, 90px); padding: 68px 0 74px; }
.hero-copy { max-width: 520px; }
.eyebrow, .section-kicker {
  display: inline-flex; color: var(--primary); font-size: .77rem; font-weight: 800;
  letter-spacing: .12em; text-transform: uppercase;
}
.hero h1 { margin: 14px 0 20px; max-width: 12ch; font-size: clamp(2.85rem, 6vw, 5.3rem); line-height: .98; letter-spacing: -.065em; }
.hero-copy > p { margin: 0; max-width: 54ch; color: var(--text-soft); font-size: clamp(1rem, 1.6vw, 1.12rem); }
.trust-row { display: flex; flex-wrap: wrap; gap: 10px 18px; margin-top: 28px; color: var(--text-soft); font-size: .86rem; }
.trust-row span { display: inline-flex; align-items: center; gap: 7px; }
.trust-row svg { width: 17px; color: var(--primary); }

.converter-card {
  position: relative; padding: clamp(24px, 4vw, 38px); border: 1px solid var(--border);
  border-radius: var(--radius-xl); background: var(--surface); backdrop-filter: blur(18px);
  box-shadow: var(--shadow);
}
.converter-card::before {
  content: ""; position: absolute; inset: -1px; z-index: -1; border-radius: inherit;
  background: linear-gradient(135deg, rgba(22, 93, 255, .25), transparent 40%, rgba(82, 204, 255, .18));
  opacity: .55;
}
.card-heading, .section-heading { display: flex; align-items: flex-start; justify-content: space-between; gap: 16px; }
.card-heading { margin-bottom: 24px; }
.card-heading h2, .section-heading h2 { margin: 4px 0 0; letter-spacing: -.035em; }
.card-heading h2 { font-size: clamp(1.55rem, 3vw, 2rem); }
.favorite-button.active { color: #f4b400; background: #fff9e6; border-color: #f4d06f; }
html[data-theme="dark"] .favorite-button.active { background: #3a3116; }
.favorite-button.active svg { fill: currentColor; }
.field-label { display: inline-block; margin-bottom: 8px; color: var(--text-soft); font-size: .8rem; font-weight: 700; }
.amount-field {
  display: grid; grid-template-columns: auto 1fr auto; align-items: center; gap: 10px;
  border: 1px solid var(--border); border-radius: var(--radius-md); background: var(--surface-solid);
  padding: 7px 14px; transition: border-color var(--transition), box-shadow var(--transition);
}
.amount-field:focus-within { border-color: var(--primary); box-shadow: var(--focus); }
.amount-symbol { color: var(--primary); font-size: 1.25rem; font-weight: 800; }
.amount-field input { width: 100%; border: 0; outline: 0; background: transparent; color: var(--text); font-size: 1.7rem; font-weight: 750; letter-spacing: -.03em; }
.amount-code { padding: 6px 9px; border-radius: 8px; background: var(--primary-soft); color: var(--primary); font-size: .75rem; font-weight: 800; }
.currency-grid { display: grid; grid-template-columns: 1fr auto 1fr; align-items: end; gap: 12px; margin-top: 20px; }
.select-wrap { position: relative; display: flex; align-items: center; }
.currency-flag { position: absolute; left: 13px; z-index: 1; font-size: 1.25rem; pointer-events: none; }
.select-wrap select {
  width: 100%; min-width: 0; height: 54px; border: 1px solid var(--border); border-radius: var(--radius-md);
  padding: 0 38px 0 43px; background: var(--surface-solid); color: var(--text); font-weight: 700; outline: none;
  text-overflow: ellipsis; transition: border-color var(--transition), box-shadow var(--transition);
}
.select-wrap select:focus { border-color: var(--primary); box-shadow: var(--focus); }
.swap-button {
  width: 44px; height: 44px; margin-bottom: 5px; display: grid; place-items: center;
  border: 1px solid var(--border); border-radius: 50%; background: var(--primary-soft); color: var(--primary);
  transition: transform var(--transition), background var(--transition);
}
.swap-button:hover { transform: rotate(180deg); background: var(--primary); color: white; }
.quick-amounts { display: flex; gap: 8px; margin-top: 16px; overflow-x: auto; scrollbar-width: none; }
.quick-amounts::-webkit-scrollbar { display: none; }
.quick-amounts button {
  flex: 0 0 auto; border: 1px solid var(--border); background: var(--surface-muted); color: var(--text-soft);
  border-radius: 999px; padding: 7px 13px; font-size: .77rem; font-weight: 700;
}
.quick-amounts button.active, .quick-amounts button:hover { border-color: var(--primary); background: var(--primary-soft); color: var(--primary); }
.primary-button {
  width: 100%; height: 56px; margin-top: 18px; display: flex; align-items: center; justify-content: center; gap: 9px;
  border: 0; border-radius: var(--radius-md); background: linear-gradient(135deg, var(--primary), #4b83ff);
  color: white; font-weight: 800; box-shadow: 0 14px 30px rgba(22, 93, 255, .24);
  transition: transform var(--transition), box-shadow var(--transition), opacity var(--transition);
}
.primary-button:hover { transform: translateY(-2px); box-shadow: 0 18px 38px rgba(22, 93, 255, .31); }
.primary-button.loading { opacity: .75; pointer-events: none; }
.primary-button.loading svg { animation: spin 900ms linear infinite; }
@keyframes spin { to { transform: rotate(360deg); } }
.result-panel { margin-top: 22px; padding-top: 22px; border-top: 1px solid var(--border); }
.result-topline { display: flex; align-items: center; justify-content: space-between; gap: 16px; color: var(--text-soft); font-size: .78rem; }
.rate-date { white-space: nowrap; }
.result-value-row { display: flex; align-items: center; justify-content: space-between; gap: 14px; margin-top: 7px; }
.result-value-row strong { min-width: 0; overflow-wrap: anywhere; font-size: clamp(2rem, 5vw, 3.15rem); line-height: 1.08; letter-spacing: -.055em; }
.result-actions { display: flex; gap: 7px; }
.rate-details { display: flex; flex-wrap: wrap; gap: 8px 18px; margin-top: 13px; color: var(--text-soft); font-size: .78rem; }
.result-message { margin: 13px 0 0; padding: 10px 12px; border-radius: 10px; background: color-mix(in srgb, var(--danger) 10%, transparent); color: var(--danger); font-size: .82rem; }

.content-section { padding: 28px 0 22px; }
.section-heading h2 { font-size: clamp(1.45rem, 3vw, 2rem); }
.pair-grid { display: grid; grid-template-columns: repeat(6, 1fr); gap: 12px; margin-top: 20px; }
.pair-card {
  display: grid; gap: 10px; padding: 17px; border: 1px solid var(--border); border-radius: var(--radius-lg);
  background: var(--surface); text-align: left; box-shadow: var(--shadow-soft);
  transition: transform var(--transition), border-color var(--transition), background var(--transition);
}
.pair-card:hover { transform: translateY(-4px); border-color: var(--primary); }
.pair-flags { font-size: 1.35rem; letter-spacing: -6px; }
.pair-card strong { font-size: .88rem; }
.pair-card small { color: var(--text-soft); }
.dashboard-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 20px; padding: 32px 0; }
.dashboard-card { min-height: 300px; padding: 25px; border: 1px solid var(--border); border-radius: var(--radius-xl); background: var(--surface); box-shadow: var(--shadow-soft); }
.section-heading.compact { align-items: center; }
.section-heading.compact h2 { font-size: 1.35rem; }
.text-button { border: 0; background: transparent; color: var(--primary); font-size: .78rem; font-weight: 800; }
.saved-list { display: grid; gap: 9px; margin-top: 20px; }
.saved-item {
  width: 100%; display: grid; grid-template-columns: auto 1fr auto; align-items: center; gap: 12px;
  padding: 12px; border: 1px solid var(--border); border-radius: 14px; background: var(--surface-muted); text-align: left;
}
.saved-item:hover { border-color: var(--primary); }
.saved-flags { font-size: 1.18rem; }
.saved-copy { min-width: 0; display: grid; }
.saved-copy strong, .saved-copy small { overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.saved-copy strong { font-size: .86rem; }
.saved-copy small { color: var(--text-soft); font-size: .73rem; }
.saved-value { color: var(--primary); font-size: .76rem; font-weight: 800; }
.empty-state { min-height: 190px; display: grid; place-content: center; justify-items: center; text-align: center; color: var(--text-soft); }
.empty-state span { font-size: 2rem; color: var(--primary); }
.empty-state p { max-width: 28ch; margin: 8px 0 0; font-size: .87rem; }
.info-strip {
  display: flex; align-items: center; justify-content: space-between; gap: 24px;
  margin-top: 12px; padding: 20px 22px; border: 1px solid var(--border); border-radius: var(--radius-lg); background: var(--primary-soft);
}
.info-strip > div { display: flex; align-items: flex-start; gap: 12px; }
.info-icon { width: 24px; height: 24px; flex: 0 0 auto; display: grid; place-items: center; border-radius: 50%; background: var(--primary); color: white; font-weight: 800; }
.info-strip p { margin: 0; color: var(--text-soft); font-size: .83rem; }
.info-strip p strong { color: var(--text); }
.info-strip a { white-space: nowrap; color: var(--primary); font-size: .8rem; font-weight: 800; }
.site-footer { display: flex; align-items: center; justify-content: space-between; gap: 20px; padding-block: 46px 30px; color: var(--text-soft); font-size: .78rem; }
.footer-brand strong { color: var(--text); }
.toast {
  position: fixed; left: 50%; bottom: 22px; z-index: 30; transform: translate(-50%, 120px);
  max-width: min(420px, calc(100% - 32px)); padding: 12px 16px; border-radius: 12px;
  background: var(--text); color: var(--bg); box-shadow: var(--shadow); font-size: .83rem; font-weight: 700;
  opacity: 0; transition: transform 250ms ease, opacity 250ms ease;
}
.toast.show { transform: translate(-50%, 0); opacity: 1; }
.sr-only { position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px; overflow: hidden; clip: rect(0,0,0,0); white-space: nowrap; border: 0; }
:focus-visible { outline: none; box-shadow: var(--focus); }

@media (max-width: 980px) {
  .hero { grid-template-columns: 1fr; padding-top: 42px; }
  .hero-copy { max-width: 760px; }
  .hero h1 { max-width: 13ch; }
  .converter-card { width: min(720px, 100%); }
  .pair-grid { grid-template-columns: repeat(3, 1fr); }
}

@media (max-width: 680px) {
  .container { width: min(100% - 26px, 1160px); }
  .site-header { padding-block: 16px; }
  .brand small, .network-status .status-text { display: none; }
  .header-actions { gap: 7px; }
  .network-status { margin-right: 2px; }
  .hero { gap: 30px; padding: 38px 0 52px; }
  .hero h1 { font-size: clamp(2.65rem, 14vw, 4rem); }
  .trust-row { display: grid; grid-template-columns: 1fr 1fr; }
  .converter-card { padding: 21px 17px; border-radius: 22px; }
  .currency-grid { grid-template-columns: 1fr; gap: 10px; }
  .swap-button { margin: -3px auto; transform: rotate(90deg); }
  .swap-button:hover { transform: rotate(270deg); }
  .result-topline { align-items: flex-start; }
  .result-value-row { align-items: flex-start; }
  .result-actions { flex-direction: column; }
  .pair-grid { grid-template-columns: repeat(2, 1fr); }
  .dashboard-grid { grid-template-columns: 1fr; }
  .info-strip { align-items: flex-start; flex-direction: column; }
  .site-footer { align-items: flex-start; flex-direction: column; }
}

@media (max-width: 420px) {
  .theme-track { width: 64px; }
  html[data-theme="dark"] .theme-thumb { transform: translateX(26px); }
  .hero h1 { font-size: 2.75rem; }
  .trust-row { grid-template-columns: 1fr; }
  .pair-grid { grid-template-columns: 1fr; }
  .result-value-row strong { font-size: 2rem; }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { scroll-behavior: auto !important; animation-duration: .01ms !important; transition-duration: .01ms !important; }
}