:root {
  --color-bg:          #0d1117;
  --color-panel:       #161b22;
  --color-accent:      #58a6ff;
  --color-text:        #c9d1d9;
  --color-muted:       #6e7681;
  --color-success:     #3fb950;
  --color-warning:     #d29922;
  --color-error:       #f85149;
  --color-border:      #30363d;
  --color-btn:         #1f6feb;
  --color-btn-hover:   #388bfd;
  --color-btn-active:  #58a6ff;
  --color-btn-stop:    #6e2929;
  --color-btn-stop-hover: #a02020;
  --radius: 8px;
  --font: 'Courier New', Courier, monospace;
}

*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

body {
  background-color: var(--color-bg);
  color: var(--color-text);
  font-family: var(--font);
  font-size: 16px;
  line-height: 1.5;
  min-height: 100vh;
  padding: 16px;
}

main {
  max-width: 480px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 16px;
}

/* ── Header ── */
header {
  background: var(--color-panel);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: 20px 16px;
  text-align: center;
}

.node-label {
  display: inline-block;
  font-size: 11px;
  letter-spacing: 3px;
  color: var(--color-accent);
  border: 1px solid var(--color-accent);
  border-radius: 4px;
  padding: 2px 8px;
  margin-bottom: 10px;
}

h1 {
  font-size: 22px;
  color: var(--color-accent);
  margin-bottom: 4px;
}

.subtitle {
  font-size: 12px;
  color: var(--color-muted);
}

/* ── Status HTTPS ── */
.status {
  background: var(--color-panel);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: 14px 16px;
}

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

.status-dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: var(--color-warning);
  flex-shrink: 0;
  transition: background 0.4s;
}

.status-dot.https-ok {
  background: var(--color-success);
  box-shadow: 0 0 8px var(--color-success);
  animation: pulse 2.5s ease-in-out infinite;
}

.status-dot.https-warn {
  background: var(--color-warning);
}

.status-dot.https-error {
  background: var(--color-error);
}

.status-text {
  font-size: 13px;
  font-weight: bold;
  letter-spacing: 1px;
}

.status-detail {
  font-size: 11px;
  color: var(--color-muted);
  margin-top: 6px;
  padding-left: 20px;
}

/* ── Controls ── */
.controls {
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.btn-group {
  display: flex;
  gap: 8px;
}

.btn-action {
  background: var(--color-btn);
  color: #fff;
  border: none;
  border-radius: var(--radius);
  font-family: var(--font);
  font-size: 12px;
  font-weight: bold;
  letter-spacing: 1px;
  flex: 1;
  min-height: 52px;
  cursor: pointer;
  transition: background 0.15s, transform 0.1s, opacity 0.15s;
  -webkit-tap-highlight-color: transparent;
  user-select: none;
}

.btn-action:hover:not(:disabled)  { background: var(--color-btn-hover); }
.btn-action.pressed                { background: var(--color-btn-active); transform: scale(0.97); }
.btn-action:disabled               { opacity: 0.35; cursor: not-allowed; }

.btn-action.btn-loading {
  background: var(--color-panel);
  border: 1px solid var(--color-border);
  color: var(--color-muted);
  animation: blink 1s ease-in-out infinite;
}

.btn-stop {
  background: var(--color-btn-stop);
  flex: 0 0 auto;
  padding: 0 16px;
}
.btn-stop:hover:not(:disabled) { background: var(--color-btn-stop-hover); }

.controls-hint {
  font-size: 11px;
  color: var(--color-muted);
  text-align: center;
  letter-spacing: 0.3px;
  line-height: 1.5;
}

/* ── Cards ── */
.card {
  background: var(--color-panel);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  overflow: hidden;
}

.card-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 10px 16px;
  border-bottom: 1px solid var(--color-border);
}

.card-name {
  font-size: 11px;
  letter-spacing: 2px;
  color: var(--color-muted);
}

/* ── GPS dot con precisión ── */
.card-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--color-border);
  flex-shrink: 0;
}

.card-dot.dot-waiting {
  background: var(--color-warning);
  animation: blink 1s ease-in-out infinite;
}

.card-dot.dot-high {
  background: var(--color-success);
  box-shadow: 0 0 6px var(--color-success);
  animation: pulse 2s ease-in-out infinite;
}

.card-dot.dot-mid {
  background: var(--color-warning);
  box-shadow: 0 0 6px var(--color-warning);
  animation: pulse 2s ease-in-out infinite;
}

.card-dot.dot-low {
  background: var(--color-error);
  box-shadow: 0 0 6px var(--color-error);
  animation: pulse 2s ease-in-out infinite;
}

.card-dot.dot-error {
  background: var(--color-error);
}

@keyframes pulse {
  0%, 100% { opacity: 1; }
  50%       { opacity: 0.35; }
}

@keyframes blink {
  0%, 100% { opacity: 1; }
  50%       { opacity: 0.2; }
}

/* ── Card body ── */
.card-body {
  padding: 12px 16px;
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.data-row {
  display: flex;
  align-items: baseline;
  gap: 8px;
}

.data-label {
  font-size: 11px;
  color: var(--color-muted);
  letter-spacing: 1px;
  min-width: 68px;
  flex-shrink: 0;
}

.data-val {
  font-size: 15px;
  color: var(--color-accent);
  font-weight: bold;
  flex: 1;
}

.data-val-sm {
  font-size: 12px;
}

.data-unit {
  font-size: 11px;
  color: var(--color-muted);
  flex-shrink: 0;
}

/* ── Maps link ── */
.maps-link {
  display: block;
  margin-top: 10px;
  font-size: 11px;
  letter-spacing: 1px;
  color: var(--color-accent);
  text-decoration: none;
  text-align: right;
  border-top: 1px solid var(--color-border);
  padding-top: 10px;
}

.maps-link:hover {
  color: var(--color-btn-hover);
}

/* ── Historial ── */
.hist-count {
  font-size: 11px;
  color: var(--color-muted);
}

#histList {
  list-style: none;
  max-height: 220px;
  overflow-y: auto;
}

#histList li {
  display: grid;
  grid-template-columns: auto 1fr auto;
  gap: 8px;
  align-items: center;
  padding: 9px 16px;
  font-size: 11px;
  border-bottom: 1px solid var(--color-border);
  animation: slideIn 0.2s ease;
}

#histList li:last-child {
  border-bottom: none;
}

.hist-time {
  color: var(--color-accent);
  white-space: nowrap;
}

.hist-coords {
  color: var(--color-text);
}

.hist-acc {
  color: var(--color-muted);
  white-space: nowrap;
}

.hist-acc.acc-high  { color: var(--color-success); }
.hist-acc.acc-mid   { color: var(--color-warning); }
.hist-acc.acc-low   { color: var(--color-error); }

.hist-empty {
  padding: 16px;
  font-size: 11px;
  color: var(--color-muted);
  text-align: center;
}

@keyframes slideIn {
  from { opacity: 0; transform: translateY(-4px); }
  to   { opacity: 1; transform: translateY(0); }
}

/* ── Desktop breakpoint ── */
@media (min-width: 600px) {
  body { padding: 40px 16px; }
  h1   { font-size: 28px; }

  .btn-action { font-size: 13px; }
}