:root {
  --bg: #0b1220;
  --panel: rgba(255, 255, 255, 0.06);
  --panel-2: rgba(255, 255, 255, 0.08);
  --border: rgba(255, 255, 255, 0.12);
  --text: rgba(255, 255, 255, 0.92);
  --muted: rgba(255, 255, 255, 0.68);
  --muted-2: rgba(255, 255, 255, 0.5);
  --gold: #f6c85f;
  --green: #2ad07a;
  --red: #ff4d6d;
  --shadow: 0 10px 30px rgba(0, 0, 0, 0.35);
  --radius: 18px;
  --radius-sm: 12px;
  --font: ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto,
    "Helvetica Neue", Arial, "Noto Sans", "Liberation Sans", "PingFang SC", "Hiragino Sans GB",
    "Microsoft YaHei", sans-serif;
}

* {
  box-sizing: border-box;
}

html,
body {
  height: 100%;
}

body {
  margin: 0;
  font-family: var(--font);
  color: var(--text);
  background: radial-gradient(1200px 800px at 10% 10%, rgba(246, 200, 95, 0.22), transparent 55%),
    radial-gradient(900px 600px at 85% 15%, rgba(45, 208, 122, 0.14), transparent 50%),
    radial-gradient(900px 700px at 70% 95%, rgba(255, 77, 109, 0.15), transparent 45%), var(--bg);
}

.app-header {
  padding: 22px 20px 16px;
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 12px;
  max-width: 1180px;
  margin: 0 auto;
}

.eyebrow {
  margin: 0;
  font-size: 12px;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--muted);
}

.app-header h1 {
  margin: 6px 0 0;
  font-size: clamp(22px, 3.4vw, 30px);
  letter-spacing: 0.02em;
}

.status-wrap {
  display: flex;
  flex-direction: column;
  align-items: flex-end;
  gap: 6px;
}

.status-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 12px;
  border-radius: 999px;
  border: 1px solid var(--border);
  background: rgba(255, 255, 255, 0.04);
  font-size: 12px;
  color: var(--muted);
}

.status-badge.ok {
  color: rgba(42, 208, 122, 0.95);
  border-color: rgba(42, 208, 122, 0.35);
}

.status-badge.warn {
  color: rgba(246, 200, 95, 0.95);
  border-color: rgba(246, 200, 95, 0.35);
}

.status-badge.err {
  color: rgba(255, 77, 109, 0.92);
  border-color: rgba(255, 77, 109, 0.32);
}

.last-updated {
  font-size: 12px;
  color: var(--muted-2);
}

.layout {
  max-width: 1180px;
  margin: 0 auto;
  padding: 0 20px 26px;
  display: grid;
  grid-template-columns: 1.15fr 0.85fr;
  grid-template-areas:
    "price alert"
    "chart signal";
  gap: 16px;
}

.panel {
  border: 1px solid var(--border);
  background: linear-gradient(180deg, rgba(255, 255, 255, 0.06), rgba(255, 255, 255, 0.03));
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 16px 16px 18px;
  min-height: 120px;
}

.price-panel {
  grid-area: price;
}

.alert-panel {
  grid-area: alert;
}

.chart-panel {
  grid-area: chart;
}

.signal-panel {
  grid-area: signal;
}

.panel-title-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
}

.panel h2 {
  margin: 0;
  font-size: 16px;
  letter-spacing: 0.01em;
}

.price-grid {
  margin-top: 12px;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 12px;
}

.price-card {
  border: 1px solid rgba(255, 255, 255, 0.1);
  background: rgba(0, 0, 0, 0.14);
  border-radius: var(--radius-sm);
  padding: 14px 14px 12px;
}

.price-card h3 {
  margin: 0;
  font-size: 14px;
  color: var(--muted);
  font-weight: 600;
}

.price-value {
  margin: 10px 0 4px;
  font-size: clamp(26px, 3.2vw, 34px);
  font-weight: 720;
  letter-spacing: 0.03em;
}

.price-change {
  margin: 0;
  font-size: 13px;
  color: var(--muted);
}

.price-change.up {
  color: rgba(42, 208, 122, 0.95);
}

.price-change.down {
  color: rgba(255, 77, 109, 0.95);
}

.alert-form {
  margin-top: 12px;
  display: grid;
  grid-template-columns: 1fr 1fr 1fr auto;
  gap: 10px;
  align-items: end;
}

.alert-form label {
  display: grid;
  gap: 6px;
  font-size: 12px;
  color: var(--muted);
}

select,
input {
  width: 100%;
  padding: 10px 11px;
  border-radius: 12px;
  border: 1px solid rgba(255, 255, 255, 0.12);
  background: rgba(0, 0, 0, 0.18);
  color: var(--text);
  outline: none;
}

select:focus,
input:focus {
  border-color: rgba(246, 200, 95, 0.45);
  box-shadow: 0 0 0 3px rgba(246, 200, 95, 0.16);
}

.primary-btn,
.ghost-btn {
  padding: 10px 14px;
  border-radius: 12px;
  border: 1px solid rgba(255, 255, 255, 0.14);
  background: rgba(246, 200, 95, 0.92);
  color: #101820;
  font-weight: 700;
  cursor: pointer;
  white-space: nowrap;
}

.primary-btn:hover {
  filter: brightness(1.04);
}

.ghost-btn {
  background: rgba(255, 255, 255, 0.06);
  color: var(--text);
  font-weight: 600;
}

.ghost-btn:hover {
  background: rgba(255, 255, 255, 0.1);
}

.alert-list {
  margin: 12px 0 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 10px;
}

.alert-item {
  display: flex;
  justify-content: space-between;
  gap: 10px;
  border: 1px solid rgba(255, 255, 255, 0.1);
  background: rgba(0, 0, 0, 0.12);
  border-radius: 14px;
  padding: 10px 10px 10px 12px;
}

.alert-meta {
  display: grid;
  gap: 4px;
}

.alert-meta strong {
  font-size: 13px;
  font-weight: 700;
}

.alert-meta span {
  font-size: 12px;
  color: var(--muted);
}

.alert-actions {
  display: flex;
  align-items: center;
  gap: 8px;
}

.small-btn {
  padding: 8px 10px;
  border-radius: 12px;
  border: 1px solid rgba(255, 255, 255, 0.12);
  background: rgba(255, 255, 255, 0.05);
  color: var(--text);
  cursor: pointer;
  font-size: 12px;
}

.small-btn.danger {
  border-color: rgba(255, 77, 109, 0.34);
  color: rgba(255, 77, 109, 0.92);
}

.small-btn:hover {
  background: rgba(255, 255, 255, 0.09);
}

.chart-wrap {
  margin-top: 14px;
  position: relative;
  min-height: 380px;
}

#klineChart {
  width: 100%;
  height: 300px;
  display: block;
  border-radius: 12px;
  border: 1px solid rgba(255, 255, 255, 0.12);
  background: rgba(2, 6, 23, 0.52);
}

.chart-fallback {
  position: absolute;
  top: 10px;
  left: 10px;
  right: 10px;
  min-height: 48px;
  display: grid;
  place-items: center;
  text-align: center;
  border: 1px dashed rgba(255, 255, 255, 0.2);
  border-radius: 12px;
  background: rgba(0, 0, 0, 0.58);
  color: var(--muted);
  font-size: 13px;
  line-height: 1.5;
  padding: 10px 12px;
  z-index: 2;
  pointer-events: none;
}

.legend {
  display: inline-flex;
  gap: 10px;
  font-size: 12px;
  color: var(--muted);
}

.legend-item {
  display: inline-flex;
  align-items: center;
  gap: 6px;
}

.legend-item::before {
  content: "";
  width: 10px;
  height: 10px;
  border-radius: 3px;
  background: rgba(255, 255, 255, 0.18);
}

.legend-item.up::before {
  background: rgba(42, 208, 122, 0.8);
}

.legend-item.down::before {
  background: rgba(255, 77, 109, 0.8);
}

.signal-box {
  margin-top: 14px;
  border-radius: var(--radius-sm);
  border: 1px solid rgba(255, 255, 255, 0.12);
  background: rgba(0, 0, 0, 0.14);
  padding: 14px 14px 12px;
}

.signal-box.buy {
  border-color: rgba(42, 208, 122, 0.4);
  background: rgba(42, 208, 122, 0.08);
}

.signal-box.sell {
  border-color: rgba(255, 77, 109, 0.4);
  background: rgba(255, 77, 109, 0.08);
}

.signal-box.hold {
  border-color: rgba(246, 200, 95, 0.36);
  background: rgba(246, 200, 95, 0.06);
}

.signal-main {
  margin: 0;
  font-weight: 800;
  font-size: 18px;
}

.signal-detail {
  margin: 8px 0 0;
  font-size: 12px;
  color: var(--muted);
  line-height: 1.45;
}

.toast-container {
  position: fixed;
  bottom: 16px;
  right: 16px;
  display: grid;
  gap: 10px;
  z-index: 30;
}

.toast {
  width: min(360px, calc(100vw - 34px));
  border-radius: 14px;
  border: 1px solid rgba(255, 255, 255, 0.14);
  background: rgba(8, 12, 20, 0.92);
  box-shadow: var(--shadow);
  padding: 12px 12px 10px;
  backdrop-filter: blur(10px);
}

.toast strong {
  display: block;
  font-size: 13px;
  margin: 0;
}

.toast span {
  display: block;
  margin-top: 5px;
  font-size: 12px;
  color: var(--muted);
  line-height: 1.4;
}

.toast.up {
  border-color: rgba(42, 208, 122, 0.32);
}

.toast.down {
  border-color: rgba(255, 77, 109, 0.32);
}

.toast.warn {
  border-color: rgba(246, 200, 95, 0.34);
}

@media (max-width: 940px) {
  .layout {
    grid-template-columns: 1fr;
    grid-template-areas:
      "price"
      "chart"
      "alert"
      "signal";
  }

  .status-wrap {
    align-items: flex-start;
  }

  .app-header {
    flex-direction: column;
    align-items: flex-start;
  }

  .alert-form {
    grid-template-columns: 1fr 1fr;
  }

  .alert-form button {
    grid-column: span 2;
  }

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

  .chart-wrap {
    min-height: 360px;
  }

  #klineChart {
    height: 280px;
  }
}

@media (prefers-reduced-motion: reduce) {
  * {
    scroll-behavior: auto;
  }
}