/* Placeholder styling only — a dedicated black/professional theme will replace
   these tokens once the Claude Design pass for this app is finalized. */
:root {
  --color-bg: #f4f5f7;
  --color-surface: #ffffff;
  --color-border: #dde1e6;
  --color-text: #1f2430;
  --color-muted: #6b7280;
  --color-primary: #b3282d;
  --color-buy: #1a7f4e;
  --color-sell: #b3261e;
  --color-danger: #b3261e;
}

* {
  box-sizing: border-box;
}

body {
  font-family: system-ui, -apple-system, "Segoe UI", sans-serif;
  margin: 0;
  padding: 0;
  background-color: var(--color-bg);
  color: var(--color-text);
}

h1, h2 {
  margin: 0 0 8px;
}

button {
  font-family: inherit;
  cursor: pointer;
}

.gate {
  position: relative;
  max-width: 420px;
  margin: 80px auto;
  padding: 32px;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: 12px;
  text-align: center;
  overflow: hidden;
}

.gate-sparkline {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 60px;
  opacity: 0.12;
}

.gate-sparkline polyline {
  fill: none;
  stroke: var(--color-buy);
  stroke-width: 2;
}

.gate h1, .app-header h1 {
  display: flex;
  align-items: center;
  gap: 8px;
  position: relative;
}

.logo-icon {
  width: 26px;
  height: 26px;
  flex-shrink: 0;
}

.gate button {
  margin-top: 16px;
  padding: 10px 20px;
  border: none;
  border-radius: 8px;
  background: var(--color-primary);
  color: #fff;
  font-size: 15px;
}

.app-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 16px 24px;
  background: var(--color-surface);
  border-bottom: 1px solid var(--color-border);
}

.header-right {
  display: flex;
  align-items: center;
  gap: 16px;
}

.cash-balance {
  font-weight: 600;
  font-variant-numeric: tabular-nums;
}

.link-btn {
  background: none;
  border: none;
  color: var(--color-muted);
  text-decoration: underline;
  font-size: 13px;
  padding: 0;
}

.tabs {
  display: flex;
  gap: 4px;
  padding: 8px 24px 0;
  background: var(--color-surface);
  border-bottom: 1px solid var(--color-border);
}

.tab-btn {
  padding: 10px 16px;
  border: none;
  background: none;
  color: var(--color-muted);
  border-bottom: 2px solid transparent;
  font-size: 14px;
}

.tab-btn.active {
  color: var(--color-primary);
  border-bottom-color: var(--color-primary);
  font-weight: 600;
}

main {
  max-width: 720px;
  margin: 0 auto;
  padding: 24px;
}

.tab-panel[hidden] {
  display: none;
}

.market-banner {
  padding: 10px 14px;
  border-radius: 8px;
  font-size: 14px;
  margin-bottom: 16px;
}

.market-banner.open {
  background: #e3f5ec;
  color: var(--color-buy);
}

.market-banner.closed {
  background: #f5e9e8;
  color: var(--color-sell);
}

.search-form {
  display: flex;
  gap: 8px;
  margin-bottom: 12px;
}

.search-form input {
  flex: 1;
  padding: 10px 12px;
  border: 1px solid var(--color-border);
  border-radius: 8px;
  font-size: 14px;
}

.search-form button {
  padding: 10px 16px;
  border: 1px solid var(--color-primary);
  background: var(--color-primary);
  color: #fff;
  border-radius: 8px;
}

.search-results {
  list-style: none;
  margin: 0 0 16px;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.search-results button {
  width: 100%;
  text-align: left;
  padding: 10px 12px;
  border: 1px solid var(--color-border);
  border-radius: 8px;
  background: var(--color-surface);
}

.search-results button:hover {
  border-color: var(--color-primary);
}

.symbol-panel {
  margin-top: 20px;
  padding: 16px;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: 12px;
}

.symbol-panel-header {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  margin-bottom: 12px;
}

.symbol-price {
  font-size: 20px;
  font-weight: 700;
  font-variant-numeric: tabular-nums;
}

.timeframe-row {
  display: flex;
  gap: 6px;
  margin-bottom: 10px;
}

.timeframe-btn {
  padding: 5px 12px;
  border: 1px solid var(--color-border);
  background: var(--color-surface);
  color: var(--color-muted);
  border-radius: 6px;
  font-size: 12px;
  font-weight: 600;
}

.timeframe-btn:hover {
  border-color: var(--color-primary);
}

.timeframe-btn.active {
  background: var(--color-primary);
  border-color: var(--color-primary);
  color: #fff;
}

.chart-container {
  width: 100%;
  height: 300px;
  margin-bottom: 12px;
}

.order-form {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px;
}

.order-form label {
  font-size: 13px;
  color: var(--color-muted);
}

.order-form input[type="number"] {
  width: 100px;
  padding: 8px 10px;
  border: 1px solid var(--color-border);
  border-radius: 8px;
}

.order-buttons {
  display: flex;
  gap: 8px;
}

.buy-btn, .sell-btn {
  padding: 8px 18px;
  border: none;
  border-radius: 8px;
  color: #fff;
  font-weight: 600;
}

.buy-btn {
  background: var(--color-buy);
}

.sell-btn {
  background: var(--color-sell);
}

.buy-btn:disabled, .sell-btn:disabled {
  opacity: 0.5;
  cursor: not-allowed;
}

.order-message {
  width: 100%;
  font-size: 13px;
  color: var(--color-muted);
  margin: 4px 0 0;
}

.summary-cards {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
  gap: 12px;
  margin-bottom: 20px;
}

.card {
  padding: 14px;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: 10px;
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.card-label {
  font-size: 12px;
  color: var(--color-muted);
  text-transform: uppercase;
  letter-spacing: 0.03em;
}

.card-value {
  font-size: 18px;
  font-weight: 700;
  font-variant-numeric: tabular-nums;
}

.data-table {
  width: 100%;
  border-collapse: collapse;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: 10px;
  overflow: hidden;
  font-size: 13px;
}

.data-table th, .data-table td {
  padding: 10px 12px;
  text-align: right;
  border-bottom: 1px solid var(--color-border);
}

.data-table th:first-child, .data-table td:first-child {
  text-align: left;
}

.data-table thead th {
  background: #f0f1f4;
  color: var(--color-muted);
  font-weight: 600;
}

.empty-note, .muted-note {
  color: var(--color-muted);
  font-size: 13px;
}

#tab-settings h2 {
  margin-top: 24px;
}

#tab-settings h2:first-child {
  margin-top: 0;
}

.danger-btn {
  padding: 10px 18px;
  border: 1px solid var(--color-danger);
  background: #fff;
  color: var(--color-danger);
  border-radius: 8px;
  font-weight: 600;
}

.disclaimer {
  max-width: 720px;
  margin: 0 auto;
  padding: 12px 24px 32px;
  color: var(--color-muted);
  font-size: 12px;
}

@media (max-width: 600px) {
  main, .disclaimer {
    padding-left: 16px;
    padding-right: 16px;
  }

  .app-header {
    padding: 16px;
  }

  .tabs {
    padding: 8px 16px 0;
    overflow-x: auto;
  }
}