:root {
  --radius: 1.25rem;
  --background: oklch(14% 0.03 175);
  --surface: oklch(17% 0.035 170);
  --surface-deep: oklch(15% 0.03 172);
  --navy: oklch(21% 0.05 168);
  --foreground: oklch(97.8% 0.005 170);
  --muted-foreground: oklch(76% 0.02 170);
  --border: oklch(98% 0.005 250 / 0.1);
  --input: oklch(98% 0.005 250 / 0.14);
  --magenta: oklch(68% 0.18 150);
  --violet: oklch(55% 0.14 165);
  --cyan: oklch(82% 0.15 160);
  --cyan-soft: oklch(88% 0.1 158);
  --positive: oklch(79% 0.15 162);
  --negative: oklch(69% 0.19 15);
  --gold: oklch(84% 0.09 85);
  --gradient-cta: linear-gradient(96deg, var(--magenta) 0%, var(--cyan) 100%);
  --gradient-cyan: linear-gradient(96deg, var(--cyan) 0%, var(--violet) 100%);
  --shadow-glow-cyan: 0 8px 40px -10px color-mix(in oklab, var(--cyan) 45%, transparent);
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  min-height: 100vh;
  background: var(--background);
  color: var(--foreground);
  font-family: Manrope, ui-sans-serif, system-ui, sans-serif;
  font-size: 16px;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
}

button,
input,
select {
  font: inherit;
}

button {
  cursor: pointer;
}

.page-shell {
  position: relative;
  min-height: 100vh;
  overflow: hidden;
  padding-bottom: 56px;
}

.grid-bg {
  position: absolute;
  inset: 0;
  z-index: -3;
  opacity: 0.26;
  background-image:
    linear-gradient(color-mix(in oklab, var(--cyan) 12%, transparent) 1px, transparent 1px),
    linear-gradient(90deg, color-mix(in oklab, var(--cyan) 12%, transparent) 1px, transparent 1px);
  background-size: 44px 44px;
  mask-image: radial-gradient(circle at 50% 18%, black, transparent 70%);
}

.glow {
  position: absolute;
  z-index: -2;
  border-radius: 999px;
  filter: blur(90px);
  pointer-events: none;
}

.glow-a {
  width: 420px;
  height: 420px;
  top: 8%;
  left: -12%;
  background: color-mix(in oklab, var(--cyan) 24%, transparent);
}

.glow-b {
  width: 520px;
  height: 520px;
  right: -14%;
  top: 18%;
  background: color-mix(in oklab, var(--magenta) 18%, transparent);
}

.topbar,
.container {
  width: min(100%, 1216px);
  margin-inline: auto;
  padding-inline: 20px;
}

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

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

.brand-mark {
  display: grid;
  width: 44px;
  height: 44px;
  place-items: center;
  border-radius: 14px;
  background: var(--gradient-cta);
  color: white;
  font-weight: 800;
  box-shadow: var(--shadow-glow-cyan);
}

.brand-name,
.brand-subtitle {
  display: block;
  line-height: 1.2;
}

.brand-name {
  font-weight: 800;
}

.brand-subtitle {
  color: var(--muted-foreground);
  font-size: 13px;
}

.source-badge,
.chip,
.section-label {
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.source-badge {
  border: 1px solid var(--border);
  border-radius: 999px;
  padding: 8px 13px;
  color: var(--cyan-soft);
  font-size: 12px;
  font-weight: 800;
  background: color-mix(in oklab, var(--navy) 62%, transparent);
}

.hero {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 420px;
  align-items: end;
  gap: 32px;
  padding: 72px 0 40px;
}

.chip {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  border: 1px solid color-mix(in oklab, var(--foreground) 10%, transparent);
  border-radius: 999px;
  padding: 6px 14px;
  color: var(--muted-foreground);
  background: color-mix(in oklab, var(--navy) 60%, transparent);
  font-size: 13px;
  font-weight: 700;
}

.chip-dot {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--positive);
}

h1,
h2,
h3 {
  margin: 0;
  letter-spacing: 0;
  text-wrap: balance;
  font-weight: 800;
  line-height: 1.15;
}

h1 {
  max-width: 850px;
  margin-top: 22px;
  font-size: clamp(40px, 7vw, 76px);
}

h1::first-line {
  color: var(--foreground);
}

.hero p {
  max-width: 670px;
  margin: 22px 0 0;
  color: var(--muted-foreground);
  font-size: 18px;
}

.date-card,
.panel,
.rate-card,
.result-card {
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background:
    linear-gradient(180deg, color-mix(in oklab, var(--surface) 86%, transparent), color-mix(in oklab, var(--surface-deep) 78%, transparent));
  box-shadow: 0 18px 60px -38px black;
  backdrop-filter: blur(18px);
}

.date-card {
  padding: 22px;
}

.date-card label,
.field span {
  display: block;
  margin-bottom: 8px;
  color: var(--foreground);
  font-size: 14px;
  font-weight: 700;
}

.date-row {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 10px;
}

input,
select {
  width: 100%;
  min-width: 0;
  min-height: 48px;
  border: 1px solid var(--input);
  border-radius: 15px;
  outline: none;
  padding: 11px 14px;
  background: color-mix(in oklab, var(--background) 70%, transparent);
  color: var(--foreground);
  transition: border-color 0.2s, box-shadow 0.2s;
}

input[type="search"]::-webkit-search-cancel-button {
  appearance: none;
}

select {
  appearance: none;
  background-image:
    linear-gradient(45deg, transparent 50%, var(--cyan-soft) 50%),
    linear-gradient(135deg, var(--cyan-soft) 50%, transparent 50%);
  background-position:
    calc(100% - 18px) 21px,
    calc(100% - 13px) 21px;
  background-size: 5px 5px, 5px 5px;
  background-repeat: no-repeat;
  padding-right: 34px;
}

input:focus,
select:focus {
  border-color: color-mix(in oklab, var(--cyan) 60%, transparent);
  box-shadow: 0 0 0 3px color-mix(in oklab, var(--cyan) 18%, transparent);
}

#amountInput {
  font-variant-numeric: tabular-nums;
  font-weight: 800;
}

.btn-primary,
.btn-ghost {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 48px;
  border-radius: 999px;
  border: 0;
  padding: 11px 19px;
  font-weight: 800;
  white-space: nowrap;
}

.btn-primary {
  background: var(--gradient-cta);
  color: white;
  box-shadow: var(--shadow-glow-cyan);
}

.btn-primary:hover,
.btn-ghost:hover {
  transform: translateY(-1px);
}

.btn-ghost {
  border: 1px solid color-mix(in oklab, var(--cyan) 45%, transparent);
  background: color-mix(in oklab, var(--cyan) 7%, transparent);
  color: var(--cyan-soft);
}

.hint,
.status,
.formula {
  color: var(--muted-foreground);
  font-size: 13px;
}

.hint {
  margin: 12px 0 0;
}

.layout {
  display: grid;
  grid-template-columns: minmax(0, 1.35fr) minmax(340px, 0.65fr);
  gap: 22px;
}

.panel {
  padding: 24px;
}

.panel-head {
  display: flex;
  align-items: start;
  justify-content: space-between;
  gap: 20px;
}

.section-label {
  display: inline-block;
  margin-bottom: 8px;
  color: var(--cyan);
  font-size: 12px;
  font-weight: 800;
}

.panel h2 {
  font-size: 28px;
}

.add-currency {
  display: grid;
  grid-template-columns: minmax(280px, 1fr) auto;
  gap: 10px;
  width: min(100%, 520px);
}

.currency-search {
  position: relative;
}

.suggestions {
  position: absolute;
  inset: calc(100% + 8px) 0 auto;
  z-index: 20;
  max-height: 280px;
  overflow: auto;
  border: 1px solid var(--border);
  border-radius: 18px;
  background:
    linear-gradient(180deg, color-mix(in oklab, var(--surface) 96%, transparent), color-mix(in oklab, var(--surface-deep) 96%, transparent));
  box-shadow: 0 24px 70px -34px black;
  backdrop-filter: blur(18px);
  padding: 6px;
}

.suggestion {
  display: grid;
  grid-template-columns: 64px 1fr;
  gap: 10px;
  width: 100%;
  border: 0;
  border-radius: 13px;
  background: transparent;
  color: var(--foreground);
  padding: 10px 11px;
  text-align: left;
}

.suggestion:hover,
.suggestion.is-active {
  background: color-mix(in oklab, var(--cyan) 10%, transparent);
}

.suggestion-code {
  color: var(--cyan-soft);
  font-weight: 800;
}

.suggestion-name {
  min-width: 0;
  overflow: hidden;
  color: var(--muted-foreground);
  font-size: 13px;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.suggestion-empty {
  padding: 12px;
  color: var(--muted-foreground);
  font-size: 13px;
}

.selected-row {
  display: flex;
  flex-wrap: wrap;
  gap: 9px;
  margin-top: 22px;
}

.currency-pill {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  border: 1px solid var(--border);
  border-radius: 999px;
  padding: 8px 10px 8px 13px;
  background: color-mix(in oklab, var(--navy) 72%, transparent);
  color: var(--foreground);
  font-size: 13px;
  font-weight: 800;
}

.currency-pill button {
  display: grid;
  width: 22px;
  height: 22px;
  place-items: center;
  border: 0;
  border-radius: 50%;
  background: color-mix(in oklab, var(--foreground) 9%, transparent);
  color: var(--muted-foreground);
  line-height: 1;
}

.status {
  margin-top: 18px;
}

.rate-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 14px;
  margin-top: 16px;
}

.rate-card {
  position: relative;
  overflow: hidden;
  padding: 18px;
  cursor: grab;
  transition: border-color 0.2s, box-shadow 0.2s, opacity 0.2s, transform 0.2s;
}

.rate-card:hover {
  border-color: color-mix(in oklab, var(--cyan) 36%, transparent);
  box-shadow: 0 20px 70px -42px var(--cyan);
}

.rate-card.is-dragging {
  opacity: 0.55;
  transform: scale(0.98);
  cursor: grabbing;
}

.rate-card::after {
  content: "";
  position: absolute;
  inset: auto -24px -28px auto;
  width: 92px;
  height: 92px;
  border-radius: 50%;
  background: color-mix(in oklab, var(--cyan) 11%, transparent);
}

.rate-top {
  display: flex;
  align-items: start;
  justify-content: space-between;
  gap: 10px;
}

.code {
  color: var(--cyan-soft);
  font-size: 22px;
  font-weight: 800;
}

.name {
  color: var(--muted-foreground);
  font-size: 13px;
}

.rate-value {
  margin-top: 18px;
  font-size: 30px;
  font-weight: 800;
  line-height: 1;
}

.nominal {
  margin-top: 9px;
  color: var(--muted-foreground);
  font-size: 13px;
}

.drag-note {
  margin-top: 12px;
  color: var(--cyan-soft);
}

.converter-panel {
  align-self: start;
  min-width: 0;
  overflow: hidden;
}

.converter-form {
  display: grid;
  gap: 16px;
  margin-top: 20px;
  min-width: 0;
}

.converter-grid {
  display: grid;
  grid-template-columns: 1fr 48px 1fr;
  align-items: end;
  gap: 12px;
  min-width: 0;
}

.field {
  min-width: 0;
}

.drop-field {
  position: relative;
  min-width: 0;
  border: 1px dashed transparent;
  border-radius: 18px;
  padding: 8px;
  margin: -8px;
  transition: border-color 0.2s, background 0.2s, box-shadow 0.2s;
}

.drop-field small,
.drag-note {
  display: block;
  color: var(--muted-foreground);
  font-size: 12px;
  overflow-wrap: anywhere;
}

.drop-field small {
  margin-top: 7px;
}

.drop-field.is-ready {
  border-color: color-mix(in oklab, var(--cyan) 26%, transparent);
  background: color-mix(in oklab, var(--cyan) 5%, transparent);
}

.drop-field.is-over {
  border-color: color-mix(in oklab, var(--cyan) 76%, transparent);
  background: color-mix(in oklab, var(--cyan) 12%, transparent);
  box-shadow: 0 0 0 3px color-mix(in oklab, var(--cyan) 12%, transparent);
}

.swap-button {
  display: grid;
  width: 48px;
  height: 48px;
  place-items: center;
  border: 1px solid color-mix(in oklab, var(--cyan) 45%, transparent);
  border-radius: 999px;
  background: color-mix(in oklab, var(--cyan) 7%, transparent);
  color: var(--cyan-soft);
  font-size: 24px;
  font-weight: 800;
  line-height: 1;
  transition: background 0.2s, transform 0.2s, border-color 0.2s;
}

.swap-button:hover {
  border-color: color-mix(in oklab, var(--cyan) 70%, transparent);
  background: color-mix(in oklab, var(--cyan) 14%, transparent);
  transform: translateY(-1px);
}

.result-card {
  padding: 20px;
  min-width: 0;
  background:
    radial-gradient(circle at 15% 0%, color-mix(in oklab, var(--cyan) 16%, transparent), transparent 34%),
    color-mix(in oklab, var(--navy) 78%, transparent);
}

.result-label,
.formula {
  display: block;
}

.result-label {
  color: var(--muted-foreground);
  font-size: 13px;
  font-weight: 700;
}

.result-card strong {
  display: block;
  margin-top: 7px;
  color: var(--cyan-soft);
  font-size: clamp(30px, 5vw, 44px);
  line-height: 1.05;
  overflow-wrap: anywhere;
}

.formula {
  margin-top: 10px;
  overflow-wrap: anywhere;
}

.error {
  color: var(--negative);
}

@media (max-width: 980px) {
  .hero,
  .layout {
    grid-template-columns: 1fr;
  }

  .hero {
    padding-top: 46px;
  }
}

@media (max-width: 680px) {
  .topbar {
    align-items: flex-start;
  }

  .brand-subtitle,
  .source-badge {
    display: none;
  }

  .date-row,
  .panel-head,
  .add-currency,
  .rate-grid,
  .converter-grid {
    grid-template-columns: 1fr;
  }

  .swap-button {
    justify-self: center;
    transform: rotate(90deg);
  }

  .swap-button:hover {
    transform: rotate(90deg) translateX(1px);
  }

  .panel-head {
    display: grid;
  }

  .panel {
    padding: 18px;
  }
}