:root {
  --bg: #efe8d8;
  --bg-2: #e4ddd0;
  --ink: #12202b;
  --muted: #5d6c77;
  --line: rgba(18, 32, 43, 0.1);
  --surface: #fffaf1;
  --surface-2: #f7f1e6;
  --navy: #0d2438;
  --navy-2: #16344d;
  --teal: #0e6e68;
  --teal-2: #14958c;
  --gold: #c9a227;
  --gold-soft: #f3e2a8;
  --ok: #067647;
  --ok-bg: #ecfdf3;
  --danger: #b42318;
  --danger-bg: #fef3f2;
  --warn: #b54708;
  --warn-bg: #fffaeb;
  --shadow: 0 18px 50px rgba(13, 36, 56, 0.12);
  --radius: 22px;
  --mono: "IBM Plex Mono", "Vazirmatn", ui-monospace, monospace;
}

[data-theme="dark"] {
  --bg: #071018;
  --bg-2: #0c1824;
  --ink: #e8eef4;
  --muted: #93a4b3;
  --line: rgba(232, 238, 244, 0.1);
  --surface: #102233;
  --surface-2: #163044;
  --navy: #071018;
  --navy-2: #123049;
  --teal: #2dd4bf;
  --teal-2: #5eead4;
  --gold: #e8c547;
  --gold-soft: #3a3214;
  --ok: #32d583;
  --ok-bg: rgba(50, 213, 131, 0.12);
  --danger: #f97066;
  --danger-bg: rgba(249, 112, 102, 0.12);
  --warn: #fdb022;
  --warn-bg: rgba(253, 176, 34, 0.12);
  --shadow: 0 18px 50px rgba(0, 0, 0, 0.35);
}

* { box-sizing: border-box; }
html, body { margin: 0; min-height: 100%; }
html { scroll-behavior: smooth; }

body {
  font-family: "Vazirmatn", system-ui, sans-serif;
  color: var(--ink);
  background:
    radial-gradient(1200px 500px at 10% -10%, rgba(20, 149, 140, 0.18), transparent 50%),
    radial-gradient(900px 400px at 100% 0%, rgba(201, 162, 39, 0.16), transparent 45%),
    linear-gradient(180deg, var(--bg), var(--bg-2));
  line-height: 1.7;
}

.wrap {
  width: min(1120px, calc(100% - 32px));
  margin: 0 auto;
  padding-bottom: 72px;
}

.topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 22px 0 8px;
}

.brand {
  display: flex;
  align-items: center;
  gap: 12px;
  text-decoration: none;
  color: inherit;
}

.logo {
  width: 46px;
  height: 46px;
  border-radius: 14px;
  background: linear-gradient(145deg, var(--navy), var(--teal));
  display: grid;
  place-items: center;
  color: #fff;
  box-shadow: 0 10px 24px rgba(13, 36, 56, 0.22);
}

.brand h1 {
  margin: 0;
  font-size: 1.25rem;
  letter-spacing: -0.02em;
}

.brand p {
  margin: 0;
  color: var(--muted);
  font-size: 0.82rem;
}

.ghost-btn, .primary-btn, .copy-btn, .chip {
  font-family: inherit;
  border: 0;
  cursor: pointer;
}

.ghost-btn, .icon-btn {
  background: var(--surface);
  color: var(--ink);
  border: 1px solid var(--line);
  border-radius: 999px;
  padding: 8px 14px;
  font-size: 0.9rem;
}

.icon-btn {
  width: 42px;
  height: 42px;
  padding: 0;
  display: grid;
  place-items: center;
}

.hero {
  background: linear-gradient(135deg, var(--navy) 0%, #123a4f 58%, #0e6e68 140%);
  color: #f6f3ea;
  border-radius: 32px;
  padding: 36px 36px 28px;
  margin: 18px 0 22px;
  box-shadow: var(--shadow);
  position: relative;
  overflow: hidden;
}

.hero::after {
  content: "";
  position: absolute;
  inset: auto -40px -80px auto;
  width: 280px;
  height: 280px;
  background: radial-gradient(circle, rgba(201, 162, 39, 0.28), transparent 65%);
  pointer-events: none;
}

.hero h2 {
  margin: 0 0 8px;
  font-size: clamp(1.5rem, 3vw, 2.15rem);
  line-height: 1.35;
  max-width: 16ch;
}

.hero p { margin: 0; max-width: 46ch; color: rgba(246, 243, 234, 0.82); }

.pills {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 18px;
}

.pill {
  background: rgba(255, 255, 255, 0.1);
  border: 1px solid rgba(255, 255, 255, 0.12);
  color: #fff;
  border-radius: 999px;
  padding: 6px 12px;
  font-size: 0.82rem;
}

.layout {
  display: grid;
  grid-template-columns: 1.15fr 0.85fr;
  gap: 18px;
  align-items: start;
}

.card {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 18px;
  box-shadow: 0 10px 30px rgba(13, 36, 56, 0.06);
}

.tabs {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 8px;
  margin-bottom: 16px;
}

.tab {
  font-family: inherit;
  border: 1px solid var(--line);
  background: var(--surface-2);
  color: var(--muted);
  border-radius: 14px;
  padding: 11px 8px;
  cursor: pointer;
  font-weight: 600;
  transition: 0.15s ease;
}

.tab.active {
  background: var(--navy);
  color: #fff;
  border-color: transparent;
}

label {
  display: block;
  font-size: 0.88rem;
  font-weight: 600;
  margin: 12px 0 6px;
}

.field, select, textarea {
  width: 100%;
  font-family: inherit;
  font-size: 1.05rem;
  padding: 13px 14px;
  border-radius: 14px;
  border: 1px solid var(--line);
  background: var(--surface-2);
  color: var(--ink);
  outline: none;
}

.ltr {
  direction: ltr;
  text-align: left;
  font-family: var(--mono);
  letter-spacing: 0.04em;
}

.field:focus, select:focus, textarea:focus {
  border-color: var(--teal);
  box-shadow: 0 0 0 4px rgba(14, 110, 104, 0.15);
}

.row { display: grid; grid-template-columns: 1.3fr 0.7fr; gap: 10px; }
.hint { color: var(--muted); font-size: 0.8rem; margin: 6px 0 0; }
.actions { display: flex; gap: 8px; margin-top: 16px; flex-wrap: wrap; }

.primary-btn {
  background: linear-gradient(180deg, var(--teal-2), var(--teal));
  color: #fff;
  border-radius: 14px;
  padding: 12px 18px;
  font-weight: 700;
  min-width: 140px;
}

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

.sample-btn {
  background: var(--gold-soft);
  color: var(--navy);
  border: 0;
  border-radius: 14px;
  padding: 12px 14px;
  font-family: inherit;
  font-weight: 700;
  cursor: pointer;
}

.bank-preview {
  min-height: 54px;
  border-radius: 14px;
  border: 1px dashed var(--line);
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 8px 12px;
  margin-top: 12px;
}

.badge {
  width: 38px;
  height: 38px;
  border-radius: 12px;
  display: grid;
  place-items: center;
  color: #fff;
  font-size: 0.75rem;
  font-weight: 800;
  flex: 0 0 auto;
}

.result h3 { margin: 0 0 10px; font-size: 1.05rem; }
.empty { color: var(--muted); padding: 28px 8px; text-align: center; }

.value-box {
  background: var(--navy);
  color: #fff;
  border-radius: 16px;
  padding: 14px;
  display: flex;
  justify-content: space-between;
  gap: 10px;
  align-items: center;
}

.value-box code {
  font-family: var(--mono);
  font-size: 0.95rem;
  direction: ltr;
  text-align: left;
  word-break: break-all;
}

.copy-btn {
  background: rgba(255,255,255,0.12);
  color: #fff;
  border-radius: 10px;
  padding: 8px 10px;
  white-space: nowrap;
}

.kv {
  display: grid;
  gap: 8px;
  margin-top: 12px;
}

.kv div {
  display: flex;
  justify-content: space-between;
  gap: 12px;
  background: var(--surface-2);
  border-radius: 12px;
  padding: 10px 12px;
  font-size: 0.92rem;
}

.kv span { color: var(--muted); }
.kv b { font-weight: 700; }

.alert {
  border-radius: 14px;
  padding: 10px 12px;
  margin-top: 12px;
  font-size: 0.88rem;
}
.alert.ok { background: var(--ok-bg); color: var(--ok); }
.alert.err { background: var(--danger-bg); color: var(--danger); }
.alert.warn { background: var(--warn-bg); color: var(--warn); }

.history-item, .bank-item {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  padding: 10px 0;
  border-bottom: 1px solid var(--line);
  font-size: 0.86rem;
}

.history-item:last-child, .bank-item:last-child { border-bottom: 0; }
.history-item code { font-family: var(--mono); direction: ltr; }

.banks {
  margin-top: 18px;
}

.bank-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(230px, 1fr));
  gap: 10px;
}

.bank-card {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: 16px;
  padding: 12px;
}

.bank-card header {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 8px;
}

.muted { color: var(--muted); font-size: 0.8rem; }
.note { font-size: 0.78rem; color: var(--warn); }

.footer {
  margin-top: 28px;
  color: var(--muted);
  font-size: 0.82rem;
  text-align: center;
}

.panel { display: none; }
.panel.active { display: block; }

.toast {
  position: fixed;
  bottom: 20px;
  left: 50%;
  transform: translateX(-50%) translateY(20px);
  background: var(--navy);
  color: #fff;
  padding: 10px 16px;
  border-radius: 999px;
  opacity: 0;
  pointer-events: none;
  transition: 0.2s ease;
  z-index: 20;
}
.toast.show { opacity: 1; transform: translateX(-50%) translateY(0); }

@media (max-width: 860px) {
  .layout, .row, .tabs { grid-template-columns: 1fr; }
  .hero { padding: 24px 20px; border-radius: 24px; }
  .tabs { grid-template-columns: 1fr 1fr; }
}