:root {
  color-scheme: light;
  --bg: #FAF9FB;
  --bg-soft: #F1EFF3;
  --surface: #FFFFFF;
  --surface-2: #F4F2F6;
  --border: #E6E2EA;
  --text: #18171C;
  --text-dim: #726E7A;
  --accent: #D6255C;
  --accent-text: #FFFFFF;
  --up: #15803D;
  --down: #DC2626;
  --shadow: 0 10px 30px rgba(24, 23, 28, 0.08);
  --radius-lg: 16px;
  --radius-md: 12px;
  --radius-sm: 8px;
  --mono: ui-monospace, "SFMono-Regular", "JetBrains Mono", Menlo, Consolas, monospace;
  --sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
}

:root[data-theme="dark"] {
  color-scheme: dark;
  --bg: #0B0A0D;
  --bg-soft: #08070A;
  --surface: #18161C;
  --surface-2: #221F27;
  --border: #34303C;
  --text: #F5F3F7;
  --text-dim: #9E99A8;
  --accent: #FF5C8F;
  --accent-text: #1A1420;
  --up: #4ADE80;
  --down: #FB7185;
  --shadow: 0 10px 30px rgba(0, 0, 0, 0.5);
}

* { box-sizing: border-box; }

body {
  margin: 0;
  padding: 24px 28px 60px;
  background: var(--bg);
  color: var(--text);
  font-family: var(--sans);
  transition: background 0.15s ease, color 0.15s ease;
}

/* ---------- Topbar ---------- */

.topbar {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  margin-bottom: 6px;
}

.topbar h1 {
  font-size: 21px;
  letter-spacing: -0.01em;
  margin: 0;
}

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

.toggle {
  display: flex;
  align-items: center;
  gap: 7px;
  font-size: 13px;
  color: var(--text-dim);
  cursor: pointer;
  user-select: none;
}

.toggle input {
  accent-color: var(--accent);
  width: 15px;
  height: 15px;
}

.btn {
  border: 1px solid var(--border);
  background: var(--surface);
  color: var(--text);
  border-radius: var(--radius-sm);
  padding: 9px 16px;
  font-size: 14px;
  font-weight: 500;
  cursor: pointer;
  transition: border-color 0.15s ease, transform 0.1s ease;
}

.btn:hover { border-color: var(--accent); }
.btn:active { transform: scale(0.97); }

.btn-primary {
  background: var(--accent);
  color: var(--accent-text);
  border-color: var(--accent);
  font-weight: 600;
}

.btn-primary:disabled { opacity: 0.6; cursor: default; }

.iconBtn {
  background: var(--surface);
  border: 1px solid var(--border);
  color: var(--text-dim);
  border-radius: var(--radius-sm);
  width: 36px;
  height: 36px;
  flex: none;
  cursor: pointer;
  font-size: 15px;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: border-color 0.15s ease, color 0.15s ease, transform 0.1s ease;
}

.iconBtn:hover { color: var(--text); border-color: var(--accent); }
.iconBtn:active { transform: scale(0.94); }

.themeToggleBtn { font-size: 18px; }

.status-line {
  font-size: 11px;
  color: var(--text-dim);
  text-align: center;
  margin-top: 30px;
}

/* ---------- Cards grid ---------- */

.cards-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
  gap: 18px;
}

.card {
  position: relative;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 18px;
  box-shadow: var(--shadow);
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.removeBtn {
  position: absolute;
  top: 14px;
  right: 14px;
  width: 28px;
  height: 28px;
  font-size: 12px;
}

/* ---------- Swap boxes ---------- */

.swap-box {
  background: var(--surface-2);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: 12px 14px;
}

.swap-box-label {
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--text-dim);
  margin-bottom: 8px;
}

.swap-box-row {
  display: flex;
  align-items: center;
  gap: 10px;
}

.amountInput {
  flex: 1;
  min-width: 0;
  border: none;
  background: transparent;
  text-align: right;
  font-family: var(--mono);
  font-size: 19px;
  color: var(--text);
  padding: 4px 0;
}

.amountInput:focus { outline: none; }

.amountInput::-webkit-outer-spin-button,
.amountInput::-webkit-inner-spin-button {
  -webkit-appearance: none;
  margin: 0;
}

.amountInput {
  -moz-appearance: textfield;
  appearance: textfield;
}

.amountInput::placeholder { color: var(--text-dim); }

.swap-divider {
  display: flex;
  justify-content: center;
  margin: -13px 0;
  position: relative;
  z-index: 3;
}

.swap-divider-btn {
  width: 34px;
  height: 34px;
  border-radius: 50%;
  border: 1px solid var(--border);
  background: var(--bg);
  color: var(--text-dim);
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  font-size: 15px;
  box-shadow: var(--shadow);
  transition: color 0.15s ease, transform 0.15s ease, border-color 0.15s ease;
}

.swap-divider-btn:hover { color: var(--text); border-color: var(--accent); transform: rotate(180deg); }

/* ---------- Asset picker ---------- */

.asset-picker { position: relative; flex: none; }

.asset-picker-btn {
  display: flex;
  align-items: center;
  gap: 7px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 999px;
  padding: 6px 10px 6px 6px;
  cursor: pointer;
  font-size: 14px;
  font-weight: 600;
  color: var(--text);
  transition: border-color 0.15s ease;
}

.asset-picker-btn:hover { border-color: var(--accent); }

.asset-icon-slot, .asset-icon {
  width: 22px;
  height: 22px;
  border-radius: 50%;
  flex: none;
  object-fit: cover;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 14px;
  background: var(--surface-2);
}

.asset-icon-fallback {
  background: var(--accent);
  color: var(--accent-text);
  font-size: 10px;
  font-weight: 700;
}

.chevron {
  color: var(--text-dim);
  font-size: 10px;
}

.asset-picker-panel {
  position: absolute;
  top: calc(100% + 8px);
  left: 0;
  width: 300px;
  max-width: min(86vw, 340px);
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow);
  z-index: 60;
  display: flex;
  flex-direction: column;
  overflow: hidden;
}

.asset-search-input {
  margin: 10px;
  padding: 9px 12px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border);
  background: var(--surface-2);
  color: var(--text);
  font-size: 14px;
}

.asset-search-input:focus { outline: none; border-color: var(--accent); }

.asset-list {
  overflow-y: auto;
  max-height: 320px;
  padding: 0 6px 8px;
}

.asset-group-label {
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--text-dim);
  padding: 8px 8px 4px;
}

.asset-row {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 8px;
  border-radius: var(--radius-sm);
  cursor: pointer;
}

.asset-row:hover, .asset-row.is-active { background: var(--surface-2); }

.asset-row .asset-icon-slot, .asset-row .asset-icon { width: 24px; height: 24px; }

.asset-row-text { min-width: 0; flex: 1; }

.asset-row-code { font-weight: 600; font-size: 13px; }

.asset-row-name {
  color: var(--text-dim);
  font-size: 11.5px;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.asset-empty, .asset-loading {
  padding: 16px 10px;
  text-align: center;
  color: var(--text-dim);
  font-size: 13px;
}

/* ---------- Card meta / chart ---------- */

.card-meta {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 12px;
  color: var(--text-dim);
  margin-top: 10px;
}

.rateInfo {
  flex: 1;
  min-width: 0;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.cardRefreshBtn { width: 30px; height: 30px; font-size: 13px; }

.chartToggleBtn {
  background: transparent;
  border: none;
  color: var(--accent);
  cursor: pointer;
  font-size: 12.5px;
  font-weight: 600;
  padding: 4px 2px;
  flex: none;
}

.chart-panel {
  border-top: 1px dashed var(--border);
  margin-top: 12px;
  padding-top: 12px;
}

.chart-controls { display: flex; gap: 6px; margin-bottom: 10px; }

.rangeBtn {
  background: transparent;
  border: 1px solid var(--border);
  color: var(--text-dim);
  border-radius: 999px;
  padding: 4px 12px;
  font-size: 12px;
  cursor: pointer;
}

.rangeBtn.is-active { border-color: var(--accent); color: var(--text); background: var(--surface-2); font-weight: 600; }

.chart-container { min-height: 140px; display: flex; align-items: center; justify-content: center; }

.chart-hint { color: var(--text-dim); font-size: 12px; margin: 0; text-align: center; }

.chart-container svg { width: 100%; height: auto; display: block; }

/* ---------- Footer ---------- */

.footer {
  margin-top: 8px;
  font-size: 11px;
  color: var(--text-dim);
  text-align: center;
  line-height: 1.8;
}

.footer a { color: inherit; }

@media (max-width: 480px) {
  body { padding: 18px 14px 48px; }
  .topbar h1 { font-size: 18px; }
  .asset-picker-panel { position: fixed; left: 12px; right: 12px; width: auto; max-width: none; top: auto; bottom: 12px; }
}