:root {
  --muted-ink: #685b4a;
  --paper: #f4ebd6;
  --paper-deep: #eadcc0;
  --blue: #426f8f;
  --green: #cfe2bf;
  --paper-light: #fff8e8;
  --line: rgba(39, 33, 27, 0.26);
  --ink: #27211b;
  --brown: #6e4227;
  --shadow: rgba(67, 45, 25, 0.16);
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  color: var(--ink);
  font-family: "Segoe UI", system-ui, -apple-system, sans-serif;
  background:
    repeating-linear-gradient(
      90deg,
      transparent 0,
      transparent 58px,
      rgba(39, 33, 27, 0.024) 58px,
      rgba(39, 33, 27, 0.024) 60px,
      transparent 60px,
      transparent 118px
    ),
    repeating-linear-gradient(
      0deg,
      rgba(39, 33, 27, 0.02) 0,
      rgba(39, 33, 27, 0.02) 1px,
      transparent 1px,
      transparent 8px
    ),
    radial-gradient(circle at 20% 12%, rgba(255, 255, 255, 0.55), transparent 28%),
    linear-gradient(90deg, rgba(77, 50, 29, 0.04) 1px, transparent 1px),
    linear-gradient(var(--paper), var(--paper-deep));
  min-height: 100vh;
}

.grain {
  position: fixed;
  inset: 0;
  background-image: radial-gradient(rgba(0, 0, 0, 0.045) 0.45px, transparent 0.45px);
  background-size: 4px 4px;
  opacity: 0.25;
  pointer-events: none;
}

.page {
  max-width: 980px;
  margin: 0 auto;
  padding: 28px 16px 48px;
  position: relative;
  z-index: 1;
}

.card {
  border: 1px solid var(--ink);
  border-radius: 6px;
  background:
    linear-gradient(rgba(255, 255, 255, 0.22), rgba(255, 255, 255, 0)),
    linear-gradient(#fff9eb, #f1e3c6);
  box-shadow: 5px 6px 0 0 rgba(39, 33, 27, 0.14);
}

.hero {
  padding: 20px;
  margin-bottom: 18px;
}

.eyebrow {
  margin: 0 0 6px;
  color: var(--muted-ink);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  font-size: 12px;
}

h1 {
  margin: 0;
  color: var(--brown);
  font-family: Georgia, "Times New Roman", serif;
  font-size: clamp(30px, 4vw, 38px);
  line-height: 1.1;
}

.subtitle {
  margin: 10px 0 0;
  color: var(--muted-ink);
}

.panel {
  padding: 16px;
  margin-bottom: 18px;
}

.panel-head {
  display: flex;
  gap: 14px;
  justify-content: space-between;
  align-items: end;
  flex-wrap: wrap;
}

h2 {
  margin: 0;
  color: var(--brown);
  font-size: 24px;
  font-family: Georgia, "Times New Roman", serif;
}

.date-wrap {
  display: grid;
  gap: 4px;
  color: var(--muted-ink);
  font-size: 14px;
}

input,
select,
button {
  font: inherit;
}

input,
select {
  min-height: 40px;
  border: 1px solid var(--line);
  border-radius: 4px;
  background: rgba(255, 255, 255, 0.54);
  padding: 8px 10px;
}

input:focus,
select:focus,
button:focus-visible {
  outline: 2px solid color-mix(in srgb, var(--blue), white 20%);
  outline-offset: 1px;
}

button {
  min-height: 40px;
  border: 1px solid var(--ink);
  border-radius: 4px;
  background: var(--blue);
  color: #fff;
  padding: 8px 14px;
  box-shadow: 2px 2px 0 0 rgba(39, 33, 27, 0.16);
  cursor: pointer;
  transition: transform 120ms ease, box-shadow 120ms ease;
}

button:hover {
  transform: translateY(-1px);
  box-shadow: 3px 3px 0 0 rgba(39, 33, 27, 0.18);
}

button:active {
  transform: translateY(0);
  box-shadow: 1px 1px 0 0 rgba(39, 33, 27, 0.16);
}

.currency-picker {
  margin-top: 14px;
}

.currency-picker p {
  margin: 0 0 8px;
  color: var(--muted-ink);
}

.toggles {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.toggle {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  padding: 6px 10px;
  border: 1px dashed var(--line);
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.45);
}

.toggle input {
  min-height: auto;
  margin: 0;
}

.status {
  margin: 12px 0 10px;
  color: var(--muted-ink);
}

.table-wrap {
  overflow-x: auto;
}

.rates-table {
  width: 100%;
  border-collapse: collapse;
  background: rgba(255, 255, 255, 0.52);
}

.rates-table th,
.rates-table td {
  text-align: left;
  padding: 9px 8px;
  border-bottom: 1px solid rgba(39, 33, 27, 0.12);
  white-space: nowrap;
}

.rates-table th {
  color: var(--brown);
  font-weight: 600;
  background: rgba(207, 226, 191, 0.45);
}

.converter {
  margin-top: 12px;
  display: grid;
  gap: 10px;
  grid-template-columns: repeat(4, minmax(150px, 1fr));
  align-items: end;
}

.converter label {
  display: grid;
  gap: 4px;
  color: var(--muted-ink);
  font-size: 14px;
}

.result {
  margin-top: 14px;
  padding: 12px;
  border: 1px solid var(--line);
  border-radius: 4px;
  background: rgba(207, 226, 191, 0.35);
  font-size: 18px;
}

.hint {
  margin: 8px 0 0;
  color: var(--muted-ink);
  font-size: 14px;
}

@media (max-width: 860px) {
  .converter {
    grid-template-columns: repeat(2, minmax(130px, 1fr));
  }
}

@media (max-width: 560px) {
  .page {
    padding: 16px 10px 30px;
  }

  .panel,
  .hero {
    padding: 12px;
  }

  .converter {
    grid-template-columns: 1fr;
  }
}