:root {
  --bg: #050507;
  --bg-card: #111119;
  --bg-card-soft: #181822;
  --gold: #d0a94f;
  --gold-soft: #f1d27c;
  --accent: #18c29c;
  --text: #f5f5f7;
  --muted: #9a9ab0;
  --danger: #ff4d4f;
  --radius: 14px;
  --shadow-soft: 0 18px 40px rgba(0, 0, 0, 0.65);
  --border: #272738;
  --mono: "JetBrains Mono", "SF Mono", Menlo, monospace;
  --font: "Poppins", system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

*,
*::before,
*::after {
  box-sizing: border-box;
}

html,
body {
  margin: 0;
  padding: 0;
  font-family: var(--font);
  background: radial-gradient(circle at top, #1b1b2b 0, #050507 55%);
  color: var(--text);
}

.app-wrap {
  min-height: 100vh;
  max-width: 1000px;
  margin: 0 auto;
  padding: 16px 16px 40px;
}

/* TOPBAR */

.topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 14px 18px;
  background: linear-gradient(135deg, #14141f, #09090d);
  border-radius: 999px;
  border: 1px solid rgba(208, 169, 79, 0.3);
  box-shadow: var(--shadow-soft);
  margin-bottom: 16px;
}

.brand {
  display: flex;
  align-items: center;
  gap: 12px;
}

.logo {
  width: 40px;
  height: 40px;
  border-radius: 999px;
  border: 1px solid rgba(241, 210, 124, 0.5);
}

.brand-title {
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--gold);
  font-size: 0.9rem;
}

.brand-sub {
  font-size: 0.75rem;
  color: var(--muted);
}

.topbar-right {
  display: flex;
  align-items: center;
  gap: 10px;
}

/* LANG SWITCH */

.lang-switch {
  display: flex;
  border-radius: 999px;
  border: 1px solid rgba(208, 169, 79, 0.4);
  overflow: hidden;
}

.lang-btn {
  padding: 4px 10px;
  font-size: 0.7rem;
  border: none;
  background: transparent;
  color: var(--muted);
  cursor: pointer;
  min-width: 40px;
}

.lang-btn.active {
  background: var(--gold);
  color: #111;
}

/* NAV */

.nav {
  display: flex;
  gap: 10px;
  margin: 14px 0 18px;
  flex-wrap: wrap;
}

.nav-link {
  padding: 8px 14px;
  border-radius: 999px;
  font-size: 0.8rem;
  text-decoration: none;
  color: var(--muted);
  border: 1px solid transparent;
  background: rgba(17, 17, 25, 0.8);
}

.nav-link.active {
  border-color: rgba(208, 169, 79, 0.6);
  color: var(--gold-soft);
  background: radial-gradient(circle at top, #292942, #15151f);
}

/* CONTENT */

.content {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.card {
  background: linear-gradient(145deg, #10101a, #07070b);
  border-radius: var(--radius);
  padding: 18px 18px 20px;
  border: 1px solid rgba(208, 169, 79, 0.25);
  box-shadow: var(--shadow-soft);
}

.card h2 {
  margin: 0 0 8px;
  font-size: 1rem;
  color: var(--gold-soft);
}

.muted {
  color: var(--muted);
  font-size: 0.8rem;
}

.rate-box {
  margin: 10px 0 14px;
  padding: 8px 10px;
  border-radius: 10px;
  background: radial-gradient(circle at left, rgba(208, 169, 79, 0.25), #0b0b11);
  border: 1px solid rgba(208, 169, 79, 0.4);
  font-size: 0.8rem;
}

.mono {
  font-family: var(--mono);
}

.big {
  font-size: 1.3rem;
}

/* FORM */

.form-row {
  display: flex;
  flex-direction: column;
  gap: 6px;
  margin-bottom: 12px;
}

.form-row label {
  font-size: 0.8rem;
  color: var(--muted);
}

input[type="number"],
input[type="text"] {
  background: var(--bg-card-soft);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 9px 11px;
  font-size: 0.9rem;
  color: var(--text);
  font-family: var(--mono);
}

input[readonly] {
  opacity: 0.85;
}

input:focus {
  outline: none;
  border-color: var(--gold);
}

/* BUTTONS */

.btn-row {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 6px;
}

.btn {
  border-radius: 999px;
  padding: 9px 16px;
  border: none;
  cursor: pointer;
  font-size: 0.85rem;
  font-weight: 500;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  white-space: nowrap;
}

.btn.primary {
  background: linear-gradient(135deg, var(--gold), var(--gold-soft));
  color: #111;
}

.btn.primary:hover {
  filter: brightness(1.05);
}

.btn.secondary {
  background: #1a1a26;
  color: var(--gold-soft);
  border: 1px solid rgba(208, 169, 79, 0.5);
}

.btn.secondary:hover {
  background: #202034;
}

.btn.ghost {
  background: transparent;
  color: var(--gold-soft);
  border: 1px dashed rgba(208, 169, 79, 0.5);
}

/* WALLET GRID */

.wallet-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 12px;
}

.wallet-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
  gap: 10px;
}

.wallet-box {
  background: var(--bg-card-soft);
  border-radius: 12px;
  padding: 10px;
  border: 1px solid var(--border);
}

.wallet-box .label {
  font-size: 0.75rem;
  color: var(--muted);
  margin-bottom: 4px;
}

.wallet-box .value {
  font-size: 0.95rem;
}

/* REF */

.ref-row {
  display: flex;
  gap: 8px;
}

.ref-row input {
  flex: 1;
}

.status-line {
  margin-top: 8px;
  font-size: 0.78rem;
}

.status-line.error {
  color: var(--danger);
}

.status-line.success {
  color: var(--accent);
}

/* FOOTER */

.footer {
  margin-top: 20px;
  text-align: center;
  font-size: 0.75rem;
}

/* RESPONSIVE */

@media (max-width: 640px) {
  .topbar {
    flex-direction: column;
    align-items: flex-start;
    gap: 10px;
  }
  .topbar-right {
    width: 100%;
    justify-content: space-between;
  }
}