/* ---------- Colores y medidas reutilizables ---------- */
:root {
  --bg: #0b0e13;
  --card: #141922;
  --border: #252c3a;
  --text: #e6e9ef;
  --muted: #8b94a7;
  --blue: #3b82f6;
  --green: #22c55e;
  --orange: #f59e0b;
  --red: #ef4444;
  --radius: 14px;
  --font-display: "Rajdhani", system-ui, sans-serif;
  --font-body: "Inter", system-ui, -apple-system, "Segoe UI", sans-serif;
  --font-mono: "JetBrains Mono", ui-monospace, Consolas, monospace;
}

* { box-sizing: border-box; }

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

/* ---------- Cabecera ---------- */
.app-header {
  padding: 28px 16px 8px;
}

.app-header h1 {
  margin: 0 0 12px;
  font-size: clamp(1.5rem, 4vw, 2.2rem);   /* se adapta al ancho de pantalla */
  letter-spacing: 0.02em;
  font-family: var(--font-display);
  font-size: clamp(1.8rem, 5vw, 2.8rem);   /* Rajdhani es más estrecha: sube un poco */
}

.app-header h1 span { color: var(--blue); }

/* Indicador de conexión */
.badge {
  display: inline-block;
  margin: 0;
  padding: 6px 14px 6px 28px;
  border: 1px solid var(--border);
  border-radius: 999px;
  background: var(--card);
  color: var(--muted);
  font-size: 0.9rem;
  position: relative;
}

.badge::before {                 /* el puntito de color */
  content: "";
  position: absolute;
  left: 11px;
  top: 50%;
  width: 9px;
  height: 9px;
  border-radius: 50%;
  background: var(--red);
  transform: translateY(-50%);
}

.badge.ok { color: var(--text); }
.badge.ok::before { background: var(--green); }

/* ---------- Estructura ---------- */
main {
  max-width: 820px;
  margin: 0 auto;
  padding: 16px;
}

#sticks {
  display: flex;
  flex-wrap: wrap;              /* en móvil, uno debajo del otro */
  justify-content: center;
  gap: 20px;
  margin-bottom: 20px;
}

/* ---------- Tarjetas ---------- */
.card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 20px;
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.35);
}

#sticks .card {
  flex: 1 1 320px;              /* crece, encoge, y mide 320px como base */
  max-width: 380px;
}

.card h2 {
  margin: 0 0 12px;
  font-size: 0.85rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--muted);
  font-family: var(--font-display);
  font-size: 1rem;
}

canvas {
  display: block;
  margin: 0 auto 12px;
  background: #0d1117;
  border: 1px solid var(--border);
  border-radius: 50%;
}

.card canvas:not(.graph) {
  width: 100%;
  max-width: 300px;
  aspect-ratio: 1 / 1;
  height: auto;
}

canvas.graph {
  width: 100%;
  height: 120px;          /* altura fija en CSS: el JS ajusta la resolución */
  margin: 0 auto;
  border-radius: 8px;
}

.graph-title {
  margin: 16px 0 6px;
  font-size: 0.75rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--muted);
  text-align: left;
}

.graph-title span {
  text-transform: none;
  letter-spacing: 0;
  opacity: 0.8;
}

pre {
  display: inline-block;
  margin: 0;
  text-align: left;
  font-family: ui-monospace, "Cascadia Code", Consolas, monospace;
  font-size: 0.85rem;
  line-height: 1.5;
  color: #b8c0cc;
  max-width: 100%;
  overflow-x: auto;
  font-family: var(--font-mono);
  font-size: 0.8rem;
}

/* ---------- Semáforo del veredicto ---------- */
.verdict {
  margin: 14px 0 0;
  padding: 8px 12px;
  border-radius: 10px;
  font-weight: 700;
  letter-spacing: 0.04em;
  border: 1px solid transparent;
}

.verdict[hidden] { display: none; }

.verdict.normal {
  color: var(--green);
  background: rgba(34, 197, 94, 0.12);
  border-color: rgba(34, 197, 94, 0.4);
}
.verdict.possible_drift {
  color: var(--orange);
  background: rgba(245, 158, 11, 0.12);
  border-color: rgba(245, 158, 11, 0.4);
}
.verdict.significant_drift {
  color: var(--red);
  background: rgba(239, 68, 68, 0.12);
  border-color: rgba(239, 68, 68, 0.4);
}

/* ---------- Panel de control ---------- */
#status {
  margin: 0 0 16px;
  font-size: 1.05rem;
}

#controls {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  align-items: flex-end;
  gap: 14px;
}

#controls label {
  display: flex;
  flex-direction: column;
  gap: 4px;
  font-size: 0.75rem;
  color: var(--muted);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  text-align: left;
}

select, input[type="number"] {
  background: #0d1117;
  color: var(--text);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 9px 10px;
  font-size: 0.95rem;
  min-width: 90px;
}

select:focus, input:focus {
  outline: none;
  border-color: var(--blue);
}

select:disabled { opacity: 0.5; cursor: not-allowed; }

/* ---------- Botones ---------- */
.btn {
  background: transparent;
  color: var(--text);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 10px 20px;
  font-size: 0.95rem;
  font-weight: 600;
  cursor: pointer;
  transition: background 0.15s, border-color 0.15s, transform 0.05s;
}

.btn:hover:not(:disabled) {
  background: #1b2230;
  border-color: #3a4459;
}

.btn:active:not(:disabled) { transform: scale(0.97); }

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

.btn.primary:hover:not(:disabled) {
  background: #2563eb;
  border-color: #2563eb;
}

.btn:disabled {
  opacity: 0.4;
  cursor: not-allowed;
}

.disclaimer {
  margin: 20px auto 0;
  max-width: 560px;
  font-size: 0.8rem;
  color: var(--muted);
}

/* ---------- Historial ---------- */
.history { margin-top: 20px; }

.history p { margin: 0 0 12px; }

.row {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 12px;
}

.btn.danger:hover:not(:disabled) {
  background: rgba(239, 68, 68, 0.12);
  border-color: var(--red);
  color: var(--red);
}

.hint {
  margin: 12px 0 0;
  font-size: 0.8rem;
  color: var(--muted);
}

/* ---------- Ayuda sin mando ---------- */
.help {
  max-width: 560px;
  margin: 0 auto 20px;
  text-align: left;
}

.help[hidden] { display: none; }

.help h2 { color: var(--orange); }

.help ol {
  margin: 0 0 12px;
  padding-left: 20px;
  line-height: 1.6;
  font-size: 0.9rem;
  color: #b8c0cc;
}

.help .hint { margin: 0; }

/* ---------- Selector de modo ---------- */
.mode-switch {
  display: flex;
  width: fit-content;
  margin: 14px auto 0;
  padding: 4px;
  gap: 4px;
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: 999px;
}

.mode-btn {
  background: transparent;
  color: var(--muted);
  border: 0;
  border-radius: 999px;
  padding: 8px 18px;
  font-family: var(--font-display);
  font-size: 1rem;
  font-weight: 700;
  letter-spacing: 0.04em;
  cursor: pointer;
  transition: background 0.15s, color 0.15s;
}

.mode-btn:hover { color: var(--text); }

.mode-btn.active {
  background: var(--blue);
  color: #fff;
}

/* ---------- Visibilidad según el modo ---------- */
.motion-only { display: none; }

[data-mode="motion"] .static-only { display: none !important; }
[data-mode="motion"] .motion-only { display: block; }
[data-mode="motion"] pre.motion-only { display: inline-block; }

.panel p { margin: 0 0 12px; }

/* ---------- Modo movimiento: leyenda y observaciones ---------- */
.legend { margin-left: 10px; }

.dot {
  display: inline-block;
  width: 8px;
  height: 8px;
  margin: 0 4px 0 8px;
  border-radius: 50%;
}
.dot.x { background: #3b82f6; }
.dot.y { background: #f472b6; }

.observations {
  list-style: none;
  margin: 14px 0 0;
  padding: 0;
  text-align: left;
}

.observations li {
  margin: 0 0 8px;
  padding: 9px 12px;
  border: 1px solid transparent;
  border-radius: 10px;
  font-size: 0.85rem;
  line-height: 1.45;
}

.observations li.ok {
  color: var(--green);
  background: rgba(34, 197, 94, 0.1);
  border-color: rgba(34, 197, 94, 0.35);
}
.observations li.info {
  color: #b8c0cc;
  background: rgba(139, 148, 167, 0.08);
  border-color: var(--border);
}
.observations li.warn {
  color: var(--orange);
  background: rgba(245, 158, 11, 0.1);
  border-color: rgba(245, 158, 11, 0.4);
}

/* ---------- Artículo explicativo ---------- */
.article {
  margin-top: 28px;
  text-align: left;
  line-height: 1.65;
  color: #c3cad6;
}

.article h2 {
  margin: 0 0 14px;
  font-size: clamp(1.3rem, 3.5vw, 1.7rem);
  letter-spacing: 0.01em;
  text-transform: none;
  color: var(--text);
}

.article h3 {
  margin: 26px 0 8px;
  font-family: var(--font-display);
  font-size: 1.2rem;
  color: var(--text);
}

.article h4 {
  margin: 20px 0 4px;
  font-size: 0.95rem;
  color: var(--text);
}

.article p { margin: 0 0 12px; font-size: 0.95rem; }

.article ol {
  margin: 0 0 12px;
  padding-left: 22px;
  font-size: 0.95rem;
}

.article li { margin-bottom: 6px; }

.article strong { color: var(--text); }

/* ---------- Apoyo ---------- */
.support {
  max-width: 560px;
  margin: 28px auto 0;
  text-align: center;
}

.support p { margin: 0 0 12px; font-size: 0.9rem; color: #b8c0cc; }

.support .hint { margin: 12px 0 0; font-size: 0.75rem; color: var(--muted); }

.support-btn {
  display: inline-block;
  text-decoration: none;     /* un <a> no lleva subrayado como un enlace normal */
}

/* ---------- Pantallas pequeñas ---------- */
@media (max-width: 480px) {
  main { padding: 10px; }
  .card { padding: 14px; }
  .btn { flex: 1 1 100%; }      /* botones a todo el ancho en móvil */
}