/* ══════════════════════════════════════════════════════════════
   sim-kapitza.css — Estilos de la simulación del Péndulo de Kapitza
   Usado por: tema1-osciladores.html (inline sim, scoped a .sim-dark)
══════════════════════════════════════════════════════════════ */

/* ─── DARK BAND override (inline sim, sin iframe) ─────────── */
.sim-band {
  padding: 0 0 24px;
  line-height: normal;
}

/* ─── BASE .sim-dark ─────────────────────────────────────── */
.sim-dark {
  --s-bg:     #06090f;
  --s-bg2:    #0d1117;
  --s-bg3:    #161b27;
  --s-border: #1f2d42;
  --s-text:   #c9d1d9;
  --s-dim:    #4a5568;
  --s-cyan:   #58a6ff;
  --s-green:  #3fb950;
  --s-red:    #f85149;
  --s-orange: #e3b341;
  --s-white:  #e6edf3;
  --s-r:      8px;
  color: var(--s-text);
  font-family: 'JetBrains Mono', 'Courier New', monospace;
  font-size: 13px;
  line-height: 1.6;
}

/* ─── HEADER ─────────────────────────────────────────────── */
.sim-dark .sim-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 18px 28px 14px;
  border-bottom: 1px solid var(--s-border);
  background: linear-gradient(180deg, #0a0f1e 0%, var(--s-bg) 100%);
}

.sim-dark h1 {
  font-size: 20px;
  font-weight: 800;
  color: var(--s-white);
  letter-spacing: -0.3px;
}

.sim-dark .sim-subtitle {
  color: var(--paper);
  font-size: 10.5px;
  margin-top: 2px;
  letter-spacing: 0.3px;
}

/* ─── BADGES ─────────────────────────────────────────────── */
.sim-dark .badge {
  padding: 5px 14px;
  border-radius: 20px;
  font-size: 11px;
  font-weight: 600;
  border: 1px solid;
  letter-spacing: 0.5px;
  transition: all 0.4s ease;
}
.sim-dark .badge.stable   { color: var(--s-green);  border-color: var(--s-green);  background: rgba(63,185,80,0.08); }
.sim-dark .badge.unstable { color: var(--s-red);    border-color: var(--s-red);    background: rgba(248,81,73,0.08); }
.sim-dark .badge.boundary { color: var(--s-orange); border-color: var(--s-orange); background: rgba(227,179,65,0.08); }

/* ─── LAYOUT PRINCIPAL ───────────────────────────────────── */
.sim-dark .sim-main {
  display: grid;
  grid-template-columns: 1fr 370px;
  gap: 0;
  max-width: 1120px;
  margin: 0 auto;
  padding: 20px 20px 0;
}

.sim-dark .canvas-col {
  display: flex;
  flex-direction: column;
  gap: 14px;
  padding-right: 16px;
}

.sim-dark .controls-col {
  display: flex;
  flex-direction: column;
  gap: 14px;
}

/* ─── CANVAS WRAPPERS ────────────────────────────────────── */
.sim-dark .canvas-wrap {
  position: relative;
  background: var(--s-bg2);
  border: 1px solid var(--s-border);
  border-radius: var(--s-r);
  overflow: hidden;
}

.sim-dark .canvas-label {
  position: absolute;
  top: 9px; left: 12px;
  font-size: 9.5px;
  color: var(--paper);
  text-transform: uppercase;
  letter-spacing: 1.2px;
  pointer-events: none;
  z-index: 2;
}

.sim-dark .canvas-overlay-br {
  position: absolute;
  bottom: 8px; right: 10px;
  font-size: 9px;
  color: var(--paper);
  pointer-events: none;
  z-index: 2;
  text-align: right;
  line-height: 1.8;
}

.sim-dark canvas { display: block; }

/* ─── PANEL ──────────────────────────────────────────────── */
.sim-dark .panel {
  background: var(--s-bg2);
  border: 1px solid var(--s-border);
  border-radius: var(--s-r);
  padding: 16px;
}

.sim-dark .panel-title {
  font-size: 9.5px;
  color: var(--paper);
  text-transform: uppercase;
  letter-spacing: 1.2px;
  margin-bottom: 14px;
  padding-bottom: 8px;
  border-bottom: 1px solid var(--s-border);
}

/* ─── SLIDERS ────────────────────────────────────────────── */
.sim-dark .param-group { margin-bottom: 13px; }

.sim-dark .param-row {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  margin-bottom: 5px;
}

.sim-dark .param-name { color: var(--paper); font-size: 10.5px; }
.sim-dark .param-sym  { color: var(--s-cyan); font-style: italic; font-size: 12px; margin-left: 4px; }
.sim-dark .param-val  { color: var(--s-white); font-size: 11px; font-weight: 600; min-width: 78px; text-align: right; }

.sim-dark input[type="range"] {
  width: 100%; height: 3px;
  -webkit-appearance: none; appearance: none;
  background: var(--s-border);
  border-radius: 2px; outline: none; cursor: pointer;
}
.sim-dark input[type="range"]::-webkit-slider-thumb {
  -webkit-appearance: none;
  width: 13px; height: 13px; border-radius: 50%;
  background: var(--s-cyan); border: 2px solid var(--s-bg2);
  cursor: pointer; transition: transform 0.1s;
}
.sim-dark input[type="range"]:hover::-webkit-slider-thumb { transform: scale(1.25); }

/* ─── PRESETS ────────────────────────────────────────────── */
.sim-dark .presets-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 6px;
  margin: 14px 0 0;
}

.sim-dark .preset-btn {
  padding: 7px 4px;
  border-radius: 6px;
  border: 1px solid var(--s-border);
  background: var(--s-bg3);
  color: var(--paper);
  font-family: 'JetBrains Mono', 'Courier New', monospace;
  font-size: 10px;
  cursor: pointer;
  transition: all 0.15s;
  text-align: center;
}
.sim-dark .preset-btn:hover { border-color: var(--s-cyan); color: var(--s-cyan); }

/* ─── CONDITION BOX ──────────────────────────────────────── */
.sim-dark .condition-box {
  margin-top: 14px;
  padding: 11px 13px;
  background: var(--s-bg3);
  border-radius: 6px;
  border: 1px solid var(--s-border);
}

.sim-dark .cond-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 1.5px 0;
  font-size: 11px;
}
.sim-dark .cond-label { color: var(--s-dim); font-size: 10.5px; }
.sim-dark .cond-val   { color: var(--s-white); font-weight: 600; }

.sim-dark .verdict-row {
  display: flex;
  justify-content: center;
  align-items: center;
  padding-top: 8px;
  margin-top: 7px;
  border-top: 1px solid var(--s-border);
  font-size: 10px;
  font-weight: 600;
  letter-spacing: 0.5px;
  transition: color 0.3s;
}

/* ─── BOTONES ────────────────────────────────────────────── */
.sim-dark .btn-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 8px;
  margin-top: 14px;
}

.sim-dark button {
  padding: 8px;
  border-radius: 6px;
  border: 1px solid var(--s-border);
  background: var(--s-bg3);
  color: var(--s-text);
  font-family: 'JetBrains Mono', 'Courier New', monospace;
  font-size: 11px;
  cursor: pointer;
  transition: all 0.15s;
}
.sim-dark button:hover { border-color: var(--s-cyan); color: var(--s-cyan); }
.sim-dark button.primary { border-color: var(--s-cyan); color: var(--s-cyan); background: rgba(88,166,255,0.06); }

/* ─── CODE TOGGLE ────────────────────────────────────────── */
.sim-dark .code-section {
  max-width: 1120px;
  margin: 18px auto 0;
  padding: 0 20px;
}

.sim-dark .code-toggle-btn {
  display: flex;
  align-items: center;
  gap: 10px;
  width: 100%;
  padding: 10px 16px;
  background: var(--s-bg2);
  border: 1px solid var(--s-border);
  border-radius: var(--s-r);
  color: var(--s-dim);
  font-family: 'JetBrains Mono', 'Courier New', monospace;
  font-size: 11px;
  cursor: pointer;
  transition: all 0.2s;
  text-align: left;
}
.sim-dark .code-toggle-btn:hover { border-color: var(--s-cyan); color: var(--s-text); }
.sim-dark .code-icon { color: var(--s-cyan); font-size: 13px; }

.sim-dark .code-container {
  display: none;
  margin-top: 8px;
  background: var(--s-bg2);
  border: 1px solid var(--s-border);
  border-radius: var(--s-r);
  padding: 22px;
  overflow: auto;
  max-height: 650px;
}
.sim-dark .code-container.open { display: block; }

.sim-dark pre {
  font-family: 'JetBrains Mono', 'Courier New', monospace;
  font-size: 11.5px;
  line-height: 1.75;
  color: var(--s-text);
  white-space: pre;
  tab-size: 2;
}

/* ─── SCROLLBAR (dark override) ──────────────────────────── */
::-webkit-scrollbar { width: 6px; height: 6px; }
::-webkit-scrollbar-track { background: #0d1117; }
::-webkit-scrollbar-thumb { background: #2a3548; border-radius: 3px; }
::-webkit-scrollbar-thumb:hover { background: #3b4d66; }