:root {
  --bg-a: #f4f8ff;
  --bg-b: #f0fffb;
  --text: #102235;
  --muted: #4d647a;
  --card: #ffffff;
  --border: #d4e1f3;
  --primary: #0a84ff;
  --primary-dark: #066ed1;
  --danger: #b4233b;
  --danger-dark: #8f1b30;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  min-height: 100vh;
  font-family: "Segoe UI", Tahoma, sans-serif;
  color: var(--text);
  background: linear-gradient(145deg, var(--bg-a), var(--bg-b));
}

code {
  font-family: Consolas, "Courier New", monospace;
  font-size: 0.9em;
}

.page-bg {
  position: fixed;
  inset: 0;
  pointer-events: none;
  background:
    radial-gradient(circle at 8% 12%, rgba(10, 132, 255, 0.18) 0%, transparent 36%),
    radial-gradient(circle at 88% 8%, rgba(10, 159, 115, 0.16) 0%, transparent 34%),
    radial-gradient(circle at 50% 100%, rgba(10, 132, 255, 0.1) 0%, transparent 40%);
}

.container {
  position: relative;
  z-index: 1;
  max-width: 1200px;
  margin: 0 auto;
  padding: 26px 16px 32px;
  display: grid;
  gap: 14px;
}

.card {
  background: rgba(255, 255, 255, 0.92);
  border: 1px solid var(--border);
  border-radius: 14px;
  box-shadow: 0 14px 30px rgba(16, 34, 53, 0.08);
  padding: 16px;
}

.hero h1 {
  margin: 8px 0;
  font-size: clamp(1.5rem, 2.8vw, 2.1rem);
}

.subtitle {
  margin: 0;
  color: var(--muted);
  max-width: 960px;
}

.eyebrow {
  margin: 0;
  text-transform: uppercase;
  font-size: 0.75rem;
  letter-spacing: 0.08em;
  color: #0d8f70;
  font-weight: 700;
}

h2 {
  margin: 0 0 8px;
  font-size: 1.16rem;
}

h3 {
  margin: 0 0 8px;
  font-size: 0.95rem;
}

.hint {
  margin: 0 0 12px;
  font-size: 0.9rem;
  color: var(--muted);
}

.controls,
.hero-actions {
  margin-top: 10px;
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.threshold-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 10px;
  margin: 0 0 10px;
}

.field {
  display: grid;
  gap: 6px;
}

.field span {
  font-size: 0.84rem;
  color: var(--muted);
  font-weight: 600;
}

.field input {
  width: 100%;
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 8px 10px;
  font-size: 0.92rem;
  color: var(--text);
  background: #fff;
}

.btn {
  border: 1px solid transparent;
  border-radius: 8px;
  padding: 9px 13px;
  cursor: pointer;
  text-decoration: none;
  font-size: 0.9rem;
  font-weight: 700;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  transition: background-color 0.14s ease, transform 0.12s ease;
  color: var(--text);
  background: #fff;
}

.btn:hover:not([disabled]) {
  transform: translateY(-1px);
}

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

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

.btn-primary:hover:not([disabled]) {
  background: var(--primary-dark);
}

.btn-secondary {
  background: #fff;
  border-color: var(--border);
}

.btn-danger {
  background: var(--danger);
  color: #fff;
}

.btn-danger:hover:not([disabled]) {
  background: var(--danger-dark);
}

.status-head {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 10px;
}

.status-label {
  font-size: 0.9rem;
  font-weight: 700;
  color: #2a4f74;
}

.status-detail {
  margin: 8px 0 10px;
  color: var(--muted);
  font-size: 0.92rem;
}

.progress-track {
  width: 100%;
  height: 10px;
  border-radius: 999px;
  background: #e7eef8;
  overflow: hidden;
}

.progress-fill {
  height: 100%;
  background: linear-gradient(90deg, #0780c4 0%, #16aa78 100%);
  transition: width 0.24s ease;
}

.error {
  margin: 10px 0 0;
  color: #8f1b30;
  background: #fdecef;
  border: 1px solid #f3c5cf;
  border-radius: 8px;
  padding: 10px;
  font-size: 0.9rem;
}

.summary-grid {
  margin-top: 12px;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: 10px;
}

.metric-card {
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 10px;
  background: #fff;
}

.metric-card p {
  margin: 0;
  font-size: 1rem;
  font-weight: 700;
  color: #1f486f;
}

.json-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
}

.json-output {
  margin: 0;
  background: #0f1f33;
  color: #d5e6f8;
  border-radius: 10px;
  border: 1px solid #21354f;
  padding: 14px;
  overflow: auto;
  max-height: 620px;
  font-size: 0.82rem;
  line-height: 1.45;
}

.json-panel {
  border: 1px solid var(--border);
  border-radius: 10px;
  background: #fff;
  overflow: hidden;
}

.json-panel summary {
  cursor: pointer;
  padding: 10px 12px;
  font-size: 0.9rem;
  font-weight: 700;
  color: #234566;
  background: #f4f9ff;
  border-bottom: 1px solid #e3edf9;
}

.json-panel:not([open]) summary {
  border-bottom: none;
}

.table-wrap {
  overflow: auto;
  border: 1px solid var(--border);
  border-radius: 10px;
  background: #fff;
}

.results-table {
  width: 100%;
  border-collapse: collapse;
  min-width: 1180px;
}

.results-table th,
.results-table td {
  border-bottom: 1px solid #e3edf9;
  padding: 8px 10px;
  font-size: 0.82rem;
  text-align: left;
  white-space: nowrap;
}

.results-table th {
  position: sticky;
  top: 0;
  background: #f4f9ff;
  color: #234566;
  z-index: 1;
}

.results-table tbody tr:nth-child(even) td {
  background: #fbfdff;
}

.coin-charts {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: 12px;
}

.coin-chart-card {
  border: 1px solid var(--border);
  border-radius: 10px;
  background: #fff;
  padding: 10px;
}

.coin-chart-card h3 {
  margin: 0 0 5px;
  font-size: 0.98rem;
}

.coin-chart-meta {
  margin: 0 0 8px;
  font-size: 0.8rem;
  color: var(--muted);
}

.coin-chart-empty {
  margin: 0;
  color: var(--muted);
  font-size: 0.85rem;
}

.coin-chart-svg {
  width: 100%;
  height: 220px;
  border: 1px solid #e0ecf9;
  border-radius: 8px;
  background: linear-gradient(180deg, #f8fbff 0%, #ffffff 65%);
}

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

.coin-grid-line {
  stroke: #d7e6f8;
  stroke-width: 1;
}

.coin-line {
  fill: none;
  stroke: #0a84ff;
  stroke-width: 1.75;
}

.coin-point-ath {
  fill: #0b8f67;
  stroke: #ffffff;
  stroke-width: 1;
}

.coin-point-trough {
  fill: #b4233b;
  stroke: #ffffff;
  stroke-width: 1;
}

.coin-axis-label {
  fill: #48617a;
  font-size: 10px;
}

.coin-axis path,
.coin-axis line {
  stroke: #c8dbf1;
}

.coin-axis text {
  fill: #48617a;
  font-size: 10px;
}

@media (max-width: 760px) {
  .container {
    padding: 18px 12px 24px;
  }

  .card {
    padding: 14px;
  }

  .json-output {
    max-height: 440px;
  }

  .coin-charts {
    grid-template-columns: 1fr;
  }

}