/* ============================================================
   Math Story Game Styles
   Scoped with ms- prefix; colors match base.ejs tokens
   ============================================================ */

.ms-hide { display: none !important; }

.ms-card {
  background: #1f2937;
  border: 1px solid #374151;
  border-radius: 1rem;
  padding: 1.25rem;
}

.ms-btn {
  display: inline-flex; align-items: center; justify-content: center; gap: .5rem;
  min-height: 48px; padding: .75rem 1.5rem;
  border-radius: .75rem; font-weight: 600; font-size: 1.05rem;
  cursor: pointer; transition: all .2s ease; color: #fff;
}

.ms-btn-primary { background: #4f46e5; box-shadow: 0 0 0 0 rgba(99,102,241,.0); }
.ms-btn-primary:hover { background: #6366f1; box-shadow: 0 0 24px rgba(99,102,241,.45); transform: translateY(-1px); }
.ms-btn-ghost { background: transparent; border: 1px solid #374151; color: #d1d5db; }
.ms-btn-ghost:hover { border-color: #6366f1; color: #fff; background: rgba(31,41,55,.6); }

.ms-btn:focus-visible, .ms-opt:focus-visible, .ms-pick:focus-visible {
  outline: 3px solid #818cf8; outline-offset: 3px;
}

/* Menu pick cards (story + difficulty) */
.ms-pick {
  text-align: left; width: 100%;
  background: #111827; border: 2px solid #374151; border-radius: 1rem;
  padding: 1rem 1.1rem; color: #d1d5db; cursor: pointer; transition: all .2s ease;
}

.ms-pick:hover { border-color: #6366f1; transform: translateY(-2px); }
.ms-pick[aria-pressed="true"] { border-color: #6366f1; background: #1e1b4b; box-shadow: 0 0 22px rgba(99,102,241,.3); }
.ms-soon { opacity: .55; border-style: dashed; cursor: default; }
.ms-soon:hover { transform: none; border-color: #374151; }

/* Progress dots */
.ms-dot { width: 12px; height: 12px; border-radius: 9999px; background: #374151; display: inline-block; transition: all .3s; }
.ms-dot.done { background: #818cf8; }
.ms-dot.now { background: #fff; box-shadow: 0 0 0 3px rgba(99,102,241,.6); transform: scale(1.15); }

/* Scene stage */
.ms-stage {
  --k: 1;
  position: relative; overflow: hidden; height: 250px;
  border: 1px solid #374151; border-radius: 1rem;
  box-shadow: inset 0 0 70px rgba(11,15,26,.65);
}

@media (max-width: 640px) { .ms-stage { --k: .68; height: 195px; } }

.ms-item {
  position: absolute; transform: translate(-50%, -50%); line-height: 1;
  font-size: calc(var(--s) * 1px * var(--k));
  transition: opacity .9s ease, left 1.1s ease, top 1.1s ease, transform .9s ease;
  user-select: none; pointer-events: none;
  filter: drop-shadow(0 4px 6px rgba(0,0,0,.35));
}

.ms-item.is-hidden { opacity: 0; transform: translate(-50%, -50%) scale(.3); }
.ms-item.is-gone   { opacity: 0; transform: translate(-50%, -50%) scale(.2) rotate(18deg); }
.ms-bob { animation: ms-bob 2.4s ease-in-out infinite; }

@keyframes ms-bob {
  0%, 100% { transform: translate(-50%, -50%); }
  50%      { transform: translate(-50%, -62%); }
}

.ms-flash { animation: ms-flash 1.1s ease-out; }

@keyframes ms-flash {
  0%   { box-shadow: inset 0 0 70px rgba(11,15,26,.65), 0 0 0 0 rgba(129,140,248,.8); }
  40%  { box-shadow: inset 0 0 40px rgba(250,204,21,.35), 0 0 40px 6px rgba(129,140,248,.7); }
  100% { box-shadow: inset 0 0 70px rgba(11,15,26,.65), 0 0 0 0 rgba(129,140,248,0); }
}

/* Question + visuals */
.ms-visual { font-size: 1.7rem; line-height: 1.5; letter-spacing: .05em; text-align: center; padding: .6rem 0; word-break: break-word; }
.ms-grid { display: grid; gap: .75rem; grid-template-columns: repeat(auto-fit, minmax(120px, 1fr)); }
.ms-grid.paths { grid-template-columns: repeat(auto-fit, minmax(150px, 1fr)); }

.ms-opt {
  background: #111827; border: 2px solid #374151; color: #fff; border-radius: 1rem;
  font-family: 'Fira Code', monospace; font-size: 1.9rem; font-weight: 500;
  min-height: 76px; padding: .5rem 1rem; cursor: pointer; transition: all .18s ease;
  display: flex; flex-direction: column; align-items: center; justify-content: center; gap: .15rem;
}

.ms-opt:hover:not(:disabled) { border-color: #6366f1; background: #1e1b4b; transform: translateY(-2px); }
.ms-opt:disabled { cursor: default; }
.ms-opt .ms-dir { font-family: 'Inter', sans-serif; font-size: .95rem; font-weight: 600; color: #a5b4fc; }
.ms-opt.ms-right { border-color: #10b981; background: #064e3b; opacity: 1; }
.ms-opt.ms-wrong { border-color: #ef4444; background: #3b1219; opacity: .5; animation: ms-shake .4s; }

@keyframes ms-shake {
  0%, 100% { transform: translateX(0); } 25% { transform: translateX(-6px); } 75% { transform: translateX(6px); }
}

/* Timer */
.ms-timer-track { height: 12px; background: #111827; border-radius: 9999px; overflow: hidden; border: 1px solid #374151; flex: 1; }
.ms-timer-bar { height: 100%; width: 100%; background: linear-gradient(90deg, #6366f1, #818cf8); border-radius: 9999px; }
.ms-timer-bar.ms-low { background: linear-gradient(90deg, #f59e0b, #ef4444); }

/* Feedback bubbles */
.ms-fb { border-radius: .85rem; padding: .85rem 1rem; font-size: 1.02rem; line-height: 1.5; }
.ms-fb-warn { background: rgba(245,158,11,.12); border: 1px solid rgba(245,158,11,.4); color: #fde68a; }
.ms-fb-good { background: rgba(16,185,129,.12); border: 1px solid rgba(16,185,129,.4); color: #a7f3d0; }
.ms-fb-time { background: rgba(99,102,241,.14); border: 1px solid rgba(99,102,241,.45); color: #c7d2fe; }

.ms-fade { animation: ms-fade .5s ease-out both; }
@keyframes ms-fade { from { opacity: 0; transform: translateY(10px); } to { opacity: 1; transform: none; } }

@media (prefers-reduced-motion: reduce) {
  .ms-item, .ms-fade, .ms-bob, .ms-flash, .ms-opt, .ms-btn, .ms-pick { animation: none !important; transition: none !important; }
}