:root {
  --accent1: #8b5cf6;
  --accent2: #06b6d4;
  --bg: #0B0F1A;
  --surface: #111827;
  --text: #f1f5f9;
  --radius: 0.75rem;
}

/* Global */
* { box-sizing: border-box; }
body {
  margin: 0;
  font-family: system-ui, -apple-system, "Inter", Segoe UI, Roboto, Arial, sans-serif;
  background: var(--bg);
  color: var(--text);
}

/* Header */
.header {
  background: var(--surface);
  border-bottom: 1px solid #1f2937;
  padding: 12px 20px;
  display: flex; align-items: center; justify-content: space-between;
}
.brand { font-weight: 800; }

/* Layout */
.container { max-width: 720px; margin: 24px auto; padding: 0 16px; }

/* Card */
.card {
  background: var(--surface);
  border: 1px solid #1f2937;
  border-radius: var(--radius);
  padding: 16px;
  box-shadow: 0 2px 8px rgba(0,0,0,.35);
}
.card h2 {
  margin: 0 0 12px 0;
  padding: 10px 14px;
  border-radius: 10px;
  color: #fff;
  background: linear-gradient(90deg, var(--accent2), #3b82f6);
  font-size: 1.05rem;
}

/* Form */
.form-grid { display: grid; gap: 12px; }
.input {
  width: 100%;
  background: #1e293b;
  color: var(--text);
  border: 1px solid #243041;
  border-radius: 10px;
  padding: 8px 12px;
}
.input:focus { border-color: var(--accent2); }

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 10px 14px;
  border-radius: var(--radius);
  background: var(--surface);
  color: var(--text);
  border: 1px solid #1f2937;
  text-decoration: none;
  font-weight: 600;
  cursor: pointer;
  box-shadow: 0 2px 6px rgba(0,0,0,0.35);
  transition: transform .15s ease, box-shadow .15s ease, border-color .15s ease;
}
.btn:hover {
  transform: translateY(-1px);
  border-color: var(--accent2);
  box-shadow: 0 6px 14px rgba(0,0,0,0.45);
}
.btn.grad {
  background: linear-gradient(90deg, var(--accent1), var(--accent2));
  color: #0B0F1A;
  border: none;
}
.btn.grad:hover { filter: brightness(1.02); }

/* Address result */
.addr-fields {
  display: grid;
  gap: 8px;
  margin-bottom: 12px;
}
.field {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 6px 0;
  border-bottom: 1px solid rgba(255,255,255,.06);
}
.field:last-child { border-bottom: none; }
.field label {
  font-weight: 600; font-size: .9rem; color: var(--accent2);
}
.field label::after { content: ":"; margin-left: 4px; opacity: .8; color: var(--text); }
.field .value {
  text-align: right; word-break: break-word;
}

/* Full address copy box */
.outbox {
  display: flex; gap: 8px; align-items: center;
}
.mono {
  font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", monospace;
}

/* Fake Address – per-field layout + copy */
.addr-fields { display: grid; gap: 8px; margin-bottom: 12px; }
.field {
  display: flex; justify-content: space-between; align-items: center;
  padding: 6px 0; border-bottom: 1px solid rgba(255,255,255,.06);
}
.field:last-child { border-bottom: none; }
.field label { font-weight: 600; font-size: .9rem; color: var(--accent2); }
.field label::after { content: ":"; margin-left: 4px; opacity: .8; color: var(--text); }
.field .value { text-align: right; word-break: break-word; }

.copy-box { display: flex; align-items: center; gap: 8px; }
.copy-btn {
  padding: 4px 8px; font-size: .8rem; border-radius: 6px; cursor: pointer;
  background: linear-gradient(90deg, var(--accent1), var(--accent2));
  border: none; color: #0B0F1A; font-weight: 600;
}
.copy-btn:hover { opacity: .9; }

/* Full address line */
.outbox { display: flex; gap: 8px; align-items: center; }
.mono { font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", monospace; }