:root {
  color-scheme: dark;
  --bg: #050307;
  --bg-alt: #0a0509;
  --panel: #12070b;
  --accent: #ff253a;
  --accent-soft: rgba(255, 37, 58, 0.18);
  --text: #e5e7eb;
  --muted: #9ca3af;
  --danger: #ff4b4b;
  --success: #4ade80;
  --border: #301219;
  --card-radius: 16px;
  --shadow-soft: 0 18px 45px rgba(0, 0, 0, 0.7);
}

* { box-sizing: border-box; }

@keyframes floatIn {
  from { opacity: 0; transform: translateY(10px); }
  to   { opacity: 1; transform: translateY(0); }
}

@keyframes pulseDot {
  0%   { transform: scale(1);   opacity: 0.9; }
  50%  { transform: scale(1.4); opacity: 0.4; }
  100% { transform: scale(1);   opacity: 0.9; }
}

body {
  margin: 0;
  font-family: system-ui, -apple-system, BlinkMacSystemFont, "SF Pro Text",
    "Segoe UI", sans-serif;
  background:
    radial-gradient(circle at top, #2b0005 0, #050307 40%, #020005 80%);
  color: var(--text);
  min-height: 100vh;
  padding: 24px;
  display: flex;
  justify-content: center;
  overflow-x: hidden;
}

.app {
  width: 100%;
  max-width: 1200px;
  animation: floatIn 0.6s ease-out both;
}

header {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 12px 16px;
  margin-bottom: 20px;
}

.logo {
  width: 36px;
  height: 36px;
  border-radius: 999px;
  flex-shrink: 0;
  box-shadow: 0 0 0 2px rgba(255, 37, 58, 0.4);
}

.header-main {
  display: flex;
  flex-direction: column;
  gap: 2px;
  min-width: 0;
}

header h1 {
  font-size: 1.4rem;
  margin: 0;
  letter-spacing: 0.03em;
  display: flex;
  align-items: center;
  gap: 8px;
}

header h1 span.badge {
  font-size: 0.7rem;
  padding: 3px 7px;
  border-radius: 999px;
  border: 1px solid rgba(148, 163, 184, 0.7);
  color: var(--muted);
  text-transform: uppercase;
  background: rgba(7, 3, 6, 0.9);
}

header .subtitle {
  font-size: 0.8rem;
  color: var(--muted);
  max-width: 650px;
  margin-top: 4px;
}

.header-actions {
  margin-left: auto;
  display: flex;
  align-items: center;
  gap: 8px;
  flex-wrap: wrap;
}

.donate-pill,
.github-pill {
  padding: 6px 12px;
  border-radius: 999px;
  font-size: 0.72rem;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  white-space: nowrap;
  cursor: pointer;
  transition:
    transform 0.12s ease,
    box-shadow 0.12s ease,
    filter 0.12s ease,
    border-color 0.12s ease,
    background 0.12s ease;
}

.donate-pill {
  border: 1px solid rgba(248, 250, 252, 0.12);
  background: radial-gradient(circle at top left, rgba(255, 37, 58, 0.18), rgba(15, 5, 10, 0.96));
  color: var(--muted);
  box-shadow: 0 10px 24px rgba(255, 37, 58, 0.35);
}

.donate-pill:hover {
  transform: translateY(-1px) scale(1.02);
  box-shadow: 0 14px 30px rgba(255, 37, 58, 0.55);
  border-color: rgba(255, 148, 178, 0.9);
  filter: brightness(1.05);
}

.donate-heart {
  font-size: 0.85rem;
  color: #ff6b81;
}

.donate-label {
  font-weight: 500;
  color: #e5e7eb;
}

.donate-address {
  font-family: "JetBrains Mono", ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, "Liberation Mono", "Courier New", monospace;
  font-size: 0.68rem;
  opacity: 0.9;
}

.github-pill {
  border: 1px solid rgba(148, 163, 184, 0.5);
  background: rgba(8, 10, 15, 0.95);
  color: var(--muted);
  text-decoration: none;
  box-shadow: 0 8px 18px rgba(15, 23, 42, 0.45);
}

.github-pill:hover {
  transform: translateY(-1px) scale(1.02);
  border-color: rgba(255, 255, 255, 0.8);
  box-shadow: 0 12px 26px rgba(15, 23, 42, 0.7);
  filter: brightness(1.03);
}

.github-icon svg {
  display: block;
}

.github-icon {
  width: 16px;
  height: 16px;
}

.github-label {
  font-weight: 500;
  color: #e5e7eb;
}

.grid {
  display: grid;
  grid-template-columns: minmax(0, 2.2fr) minmax(0, 1.3fr);
  gap: 18px;
}

/* MOBILE: una sola columna, gráfico full-width y datos abajo */
@media (max-width: 900px) {
  body {
    padding: 16px 10px 24px;
  }

  header {
    align-items: flex-start;
  }

  .grid {
    grid-template-columns: minmax(0, 1fr); /* una sola columna */
  }

  /* el card del gráfico ocupa todo el ancho y gana altura */
  #chart-card {
    width: 100%;
    min-height: 420px;
  }

  .header-actions {
    margin-left: 0;
  }

  .github-pill,
  .donate-pill {
    width: 100%;
    justify-content: center;
  }
}

.card {
  background:
    radial-gradient(circle at top left, #1a060b 0, #060106 55%);
  border-radius: var(--card-radius);
  border: 1px solid rgba(56, 12, 24, 0.9);
  box-shadow: var(--shadow-soft);
  padding: 16px 16px 14px;
  position: relative;
  overflow: hidden;
  transition:
    border-color 0.15s ease,
    box-shadow 0.15s ease,
    transform 0.15s ease,
    background 0.2s ease;
  animation: floatIn 0.7s ease-out both;
}

.grid > .card:nth-child(2) { animation-delay: 0.08s; }

.card::before {
  content: "";
  position: absolute;
  inset: 0;
  background:
    radial-gradient(circle at top right, rgba(255, 37, 58, 0.18), transparent 55%);
  opacity: 0.9;
  pointer-events: none;
}

.card:hover {
  border-color: var(--accent);
  box-shadow: 0 22px 54px rgba(255, 37, 58, 0.35);
  transform: translateY(-2px);
  background:
    radial-gradient(circle at top left, #22060e 0, #060106 60%);
}

.card-header {
  position: relative;
  z-index: 1;
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  gap: 8px;
  margin-bottom: 10px;
}

.card-title {
  font-size: 0.9rem;
  font-weight: 600;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  color: #e5e7eb;
}

.card-subtitle {
  font-size: 0.75rem;
  color: var(--muted);
}

.settings-row {
  position: relative;
  z-index: 1;
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  align-items: center;
  margin-bottom: 10px;
  font-size: 0.78rem;
}

.field-group {
  display: flex;
  flex-direction: column;
  gap: 4px;
  min-width: 0;
}

.field-label {
  font-size: 0.7rem;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--muted);
}

.field-row {
  display: flex;
  gap: 6px;
  align-items: center;
  min-width: 0;
  flex-wrap: wrap;
}

input[type="text"],
input[type="number"],
select {
  background: rgba(10, 2, 9, 0.95);
  border-radius: 999px;
  border: 1px solid rgba(148, 27, 49, 0.8);
  padding: 6px 10px;
  color: var(--text);
  font-size: 0.78rem;
  outline: none;
  min-width: 0;
  transition:
    border-color 0.15s ease,
    box-shadow 0.15s ease,
    background 0.15s ease;
}

input[type="text"] {
  width: 260px;
  max-width: 100%;
}

input[type="number"] { width: 82px; }

select { padding-right: 26px; }

input:focus,
select:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 1px rgba(255, 37, 58, 0.32);
  background: rgba(10, 2, 10, 1);
}

button {
  border-radius: 999px;
  border: none;
  padding: 7px 14px;
  font-size: 0.8rem;
  font-weight: 500;
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background: linear-gradient(135deg, #ff253a, #ff7a3c);
  color: #050308;
  box-shadow: 0 10px 24px rgba(255, 37, 58, 0.6);
  white-space: nowrap;
  transition:
    transform 0.12s ease,
    box-shadow 0.12s ease,
    filter 0.12s ease,
    opacity 0.12s ease;
}

button:hover:not(:disabled) {
  transform: translateY(-1px) scale(1.02);
  box-shadow: 0 16px 32px rgba(255, 37, 58, 0.7);
  filter: brightness(1.05);
}

button.secondary {
  background: transparent;
  color: var(--muted);
  border: 1px solid rgba(75, 85, 99, 0.8);
  box-shadow: none;
}

button.secondary:hover:not(:disabled) {
  border-color: var(--accent);
  color: #e5e7eb;
}

button:disabled {
  opacity: 0.6;
  cursor: default;
  box-shadow: none;
}

.pill {
  border-radius: 999px;
  padding: 4px 9px;
  font-size: 0.7rem;
  border: 1px solid rgba(75, 85, 99, 0.7);
  color: var(--muted);
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background: rgba(7, 3, 7, 0.95);
}

.pill-dot {
  width: 6px;
  height: 6px;
  border-radius: 999px;
  background: var(--success);
  animation: pulseDot 1.8s ease-out infinite;
}

.pill-dot.red {
  background: var(--danger);
  animation: none;
}

.legend {
  position: relative;
  z-index: 1;
  margin-top: 6px;
  font-size: 0.72rem;
  color: var(--muted);
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  align-items: center;
}

.legend-item {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 3px 8px;
  border-radius: 999px;
  background: rgba(8, 2, 8, 0.98);
  border: 1px solid rgba(51, 16, 22, 0.95);
  transition: background 0.15s ease, border-color 0.15s ease;
}

.legend-item:hover {
  background: rgba(18, 6, 18, 0.98);
  border-color: rgba(255, 37, 58, 0.4);
}

.legend-swatch {
  width: 10px;
  height: 3px;
  border-radius: 999px;
  background: var(--accent);      /* d */
}

.legend-swatch.alt { background: #ff6b81; } /* d* */
.legend-swatch.delta { background: #ffb347; } /* ΔkQuai/kQuai */

/* FAST MODE NOTE */
.fast-note {
  position: relative;
  z-index: 1;
  margin-top: 12px;
  font-size: 0.72rem;
  color: var(--muted);
  padding: 7px 10px;
  border-radius: 999px;
  border: 1px solid rgba(55, 65, 81, 0.9);
  background: rgba(7, 2, 8, 0.96);
  line-height: 1.4;
}
.fast-note strong {
  color: #e5e7eb;
  font-weight: 500;
  margin-right: 4px;
}

canvas {
  position: relative;
  z-index: 1;
  width: 100% !important;
  max-height: 360px;
}

.status-bar {
  position: relative;
  z-index: 1;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 8px;
  margin-top: 8px;
  font-size: 0.72rem;
  color: var(--muted);
  border-top: 1px solid rgba(51, 16, 22, 0.9);
  padding-top: 6px;
}

.status-bar span.em {
  color: #e5e7eb;
  font-weight: 500;
}

.status-bar .status-dot {
  width: 6px;
  height: 6px;
  border-radius: 999px;
  background: var(--success);
  margin-right: 5px;
}

.status-bar .status-dot.red { background: var(--danger); }

.status-bar-right {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-wrap: wrap;
}

.status-tag {
  padding: 3px 8px;
  border-radius: 999px;
  border: 1px solid rgba(55, 65, 81, 0.9);
  background: rgba(7, 2, 8, 0.96);
  color: var(--muted);
  display: inline-flex;
  align-items: center;
  gap: 5px;
}

.status-tag strong {
  color: #e5e7eb;
  font-weight: 500;
}

.status-dot-mini {
  width: 6px;
  height: 6px;
  border-radius: 999px;
  background: #f97373;
}

.metrics-grid {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 10px;
  margin-top: 4px;
}

@media (max-width: 600px) {
  .metrics-grid { grid-template-columns: minmax(0, 1fr); }
}

.metric-card {
  background:
    radial-gradient(circle at top left, rgba(15, 5, 10, 0.96), #050205 65%);
  border-radius: 10px;
  border: 1px solid rgba(148, 27, 49, 0.8);
  padding: 10px 11px 9px;
  font-size: 0.78rem;
  position: relative;
  overflow: hidden;
  transition:
    border-color 0.15s ease,
    box-shadow 0.15s ease,
    transform 0.15s ease,
    background 0.2s ease;
}

.metric-card::after {
  content: "";
  position: absolute;
  inset: -40%;
  background:
    radial-gradient(circle at top right, rgba(255, 37, 58, 0.12), transparent 55%);
  opacity: 0.8;
  pointer-events: none;
}

.metric-card:hover {
  border-color: rgba(255, 37, 58, 0.7);
  box-shadow: 0 16px 36px rgba(255, 37, 58, 0.5);
  transform: translateY(-1px);
  background:
    radial-gradient(circle at top left, rgba(24, 8, 14, 0.98), #050205 70%);
}

.metric-title {
  font-size: 0.7rem;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--muted);
  margin-bottom: 6px;
}
.metric-title-exrate {
  text-align: center;
}

.metric-title-exrate-main {
  display: block;
}

.metric-title-exrate-sub {
  display: block;
  font-size: 0.65rem;
  opacity: 0.85;
  margin-top: 2px;
  text-transform: uppercase;
  letter-spacing: 0.12em;
}

.metric-main {
  display: flex;
  align-items: baseline;
  gap: 6px;
  margin-bottom: 4px;
}

.metric-main-exrate {
  align-items: center;
  gap: 4px;
  flex-wrap: nowrap;
}

.metric-main-exrate .metric-prefix {
  font-size: 0.78rem;
  color: var(--muted);
  opacity: 0.9;
}

.metric-main-exrate .metric-unit {
  font-size: 0.78rem;
  color: var(--muted);
  margin-left: 1px;
}

.metric-main-exrate .metric-value {
  font-size: 1.1rem;
  font-weight: 600;
}

.metric-value {
  font-size: 1.05rem;
  font-weight: 600;
}

.metric-unit {
  font-size: 0.7rem;
  color: var(--muted);
}

.metric-badge {
  font-size: 0.68rem;
  padding: 3px 7px;
  border-radius: 999px;
  border: 1px solid rgba(148, 163, 184, 0.7);
  background: rgba(8, 2, 8, 0.96);
  color: var(--muted);
}

.metric-footer {
  font-size: 0.7rem;
  color: var(--muted);
  display: flex;
  justify-content: space-between;
  gap: 8px;
  flex-wrap: wrap;
}

.metric-pill {
  padding: 2px 8px;
  border-radius: 999px;
  font-size: 0.66rem;
  background: rgba(8, 2, 8, 0.96);
  border: 1px solid rgba(55, 65, 81, 0.9);
  display: inline-flex;
  align-items: center;
  gap: 6px;
}

.metric-pill span.dot {
  width: 6px;
  height: 6px;
  border-radius: 999px;
  background: var(--success);
}

.metric-pill span.dot.red { background: var(--danger); }

footer {
  margin-top: 18px;
  font-size: 0.7rem;
  color: var(--muted);
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 8px;
}

footer a {
  color: var(--accent);
  text-decoration: none;
  transition: color 0.15s ease;
}

footer a:hover { text-decoration: underline; color: #ff7a3c; }

.tf-btn {
  padding: 4px 9px;
  font-size: 0.7rem;
  border-radius: 999px;
}

/* Spinner */
.spinner {
  display: inline-block;
  width: 14px;
  height: 14px;
  border: 2px solid rgba(255,255,255,0.08);
  border-top-color: var(--accent);
  border-radius: 50%;
  margin-left: 8px;
  animation: spin 0.9s linear infinite;
}
@keyframes spin { to { transform: rotate(360deg); } }