/* style.css — Projectile Physics Sandbox */

/* ── Canvas ────────────────────────────────────────────────────────────── */
#sim-canvas {
  aspect-ratio: 16 / 9;
  width: 100%;
  display: block;
  background-color: #030712;
  border-radius: 0.375rem;
  /* No min-width — let it shrink on mobile */
}

/* ── Chart container ───────────────────────────────────────────────────── */
#trajectory-chart-container {
  position: relative;
  min-height: 180px;
}

/* ── Control panel — mobile drawer / desktop sidebar ──────────────────── */

/* Desktop: normal flow inside flex row */
@media (min-width: 1024px) {
  #control-panel {
    max-height: calc(100vh - 5rem);  /* leave room for sticky header */
    overflow-y: auto;
  }
  #control-panel .panel-header-mobile { display: none; }
}

/* Mobile: slide-in drawer from left */
@media (max-width: 1023px) {
  #control-panel {
    position: fixed;
    inset: 0 auto 0 0;
    z-index: 40;
    width: min(85vw, 360px);
    max-height: 100vh;
    overflow-y: auto;
    padding: 1rem;
    transform: translateX(-110%);
    transition: transform 250ms cubic-bezier(0.4, 0, 0.2, 1);
    border-right: 1px solid #374151;
  }
  #control-panel.open {
    transform: translateX(0);
    box-shadow: 4px 0 24px rgba(0,0,0,0.6);
  }
}

/* Equation panel — scrollable on all sizes */
#equation-panel {
  overflow-y: auto;
  max-height: calc(100vh - 5rem);
}

/* ── Equation variable highlight ──────────────────────────────────────── */
.highlight-var {
  background-color: #fef08a !important;
  border-radius: 0.25rem;
  transition: background-color 300ms ease;
  color: #1f2937;
}
.eq-block {
  background-color: transparent;
  transition: background-color 300ms ease;
  padding: 0.25rem 0.375rem;
  border-radius: 0.25rem;
}
.highlight-var .katex { color: #1f2937 !important; }

/* ── Range slider ──────────────────────────────────────────────────────── */
input[type="range"] {
  accent-color: #3b82f6;
}

/* ── Number inputs: hide spin buttons ─────────────────────────────────── */
input[type="number"]::-webkit-inner-spin-button,
input[type="number"]::-webkit-outer-spin-button {
  -webkit-appearance: none;
  margin: 0;
}
input[type="number"] {
  -moz-appearance: textfield;
  appearance: textfield;
}

/* ── KaTeX dark theme ─────────────────────────────────────────────────── */
.katex {
  color: #e5e7eb;
  font-size: 1em;
}
.katex-display {
  margin: 0.25em 0;
  overflow-x: auto;
  overflow-y: hidden;
}

/* ── Collapsible help <details> ───────────────────────────────────────── */
details > summary { list-style: none; }
details > summary::-webkit-details-marker { display: none; }
details[open] summary .transition-transform { transform: rotate(90deg); }
details > div {
  animation: fadeIn 150ms ease;
}
@keyframes fadeIn {
  from { opacity: 0; transform: translateY(-4px); }
  to   { opacity: 1; transform: translateY(0); }
}

/* ── Responsive stacking for viz + equation panels on tablet ──────────── */
@media (min-width: 768px) and (max-width: 1023px) {
  /* Side-by-side on tablet */
  #viz-panel, #equation-panel {
    flex: 1 1 0;
    min-width: 0;
  }
  .tablet-row {
    display: flex;
    flex-direction: row;
    align-items: flex-start;
    gap: 1rem;
  }
}