/* =========================================================
   Petualangan Angka — shared/theme.css
   Design tokens + kelas komponen dipakai bersama semua modul
   (kelas 1-6). Semua kelas berprefix "pa-" supaya aman
   digabung ke halaman/platform manapun tanpa bentrok.
   ========================================================= */

@import url('https://fonts.googleapis.com/css2?family=Baloo+2:wght@500;600;700&family=Nunito:wght@400;600;700&display=swap');

/* ---- Bungkus setiap modul dengan <div class="pa-scope pa-accent-xxx"> ---- */
.pa-scope {
  --pa-paper: #FFF9EE;
  --pa-ink: #3A3428;
  --pa-ink-soft: #6B6354;
  --pa-danger: #C0392B;
  --pa-mono: 'SFMono-Regular', Consolas, 'Liberation Mono', Menlo, monospace;
  --pa-display: 'Baloo 2', sans-serif;
  --pa-body: 'Nunito', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;

  font-family: var(--pa-body);
  color: var(--pa-ink);
  max-width: 900px;
  margin: 0 auto;
  background: var(--pa-paper);
  background-image: repeating-linear-gradient(180deg, rgba(58,52,40,0.05) 0px, rgba(58,52,40,0.05) 1px, transparent 1px, transparent 34px);
  border-radius: 20px;
  padding: 1.75rem 1.5rem 2.25rem;
}
.pa-scope h1, .pa-scope h2, .pa-scope h3, .pa-scope .pa-display {
  font-family: var(--pa-display); font-weight: 700; color: var(--pa-ink);
}
.pa-scope .pa-top-badge {
  display: inline-block; font-family: var(--pa-body); font-weight: 700; font-size: 12px;
  letter-spacing: 0.04em; color: var(--pa-accent); background: var(--pa-accent-bg);
  border: 1.5px dashed var(--pa-accent); border-radius: 999px; padding: 4px 14px; margin-bottom: 10px;
}
.pa-scope h1.pa-main-title { font-size: 30px; margin: 0 0 6px; line-height: 1.15; }
.pa-scope .pa-subtitle { color: var(--pa-ink-soft); font-size: 15px; margin: 0 0 1.5rem; }

/* ---- Palet aksen — tempel salah satu sebagai kelas kedua pada .pa-scope ---- */
.pa-accent-teal   { --pa-accent:#2F6F62; --pa-accent-bg:#DEF1EA; --pa-accent-line:#B9DED2; }
.pa-accent-coral  { --pa-accent:#D8672E; --pa-accent-bg:#FBE7DA; --pa-accent-line:#F3C7A6; }
.pa-accent-purple { --pa-accent:#6B4FC7; --pa-accent-bg:#EBE6FA; --pa-accent-line:#D2C6F2; }
.pa-accent-pink   { --pa-accent:#C93F72; --pa-accent-bg:#FBE2EC; --pa-accent-line:#F0BBD2; }
.pa-accent-blue   { --pa-accent:#2E6FBB; --pa-accent-bg:#DDEBFA; --pa-accent-line:#B7D6F2; }
.pa-accent-green  { --pa-accent:#3E8E4F; --pa-accent-bg:#E1F3E3; --pa-accent-line:#BFE3C5; }
.pa-accent-amber  { --pa-accent:#C68A1D; --pa-accent-bg:#FBEFD8; --pa-accent-line:#F0DBA3; }
.pa-accent-indigo { --pa-accent:#4A55B3; --pa-accent-bg:#E4E6FA; --pa-accent-line:#C3C8F0; }

/* ---- Kartu & form ---- */
.pa-card { background: #fff; border-radius: 16px; padding: 1.25rem; border: 1.5px solid var(--pa-accent-line, #ddd); }
.pa-field-row { display: flex; align-items: center; gap: 10px; margin-bottom: 12px; flex-wrap: wrap; }
.pa-field-row label { font-size: 13px; color: var(--pa-ink-soft); min-width: 130px; }
.pa-scope input[type="number"], .pa-scope select {
  font-family: var(--pa-body); font-size: 14px; padding: 6px 10px; width: 110px;
  border: 1.5px solid var(--pa-ink-soft); border-radius: 8px; color: var(--pa-ink); background: #fff;
}
.pa-err { font-size: 13px; color: var(--pa-danger); margin: 4px 0 8px; min-height: 16px; }

/* ---- Tombol ---- */
.pa-scope button {
  font-family: var(--pa-body); font-size: 13px; border: 1.5px solid var(--pa-ink-soft);
  background: #fff; color: var(--pa-ink); border-radius: 10px; padding: 8px 14px; cursor: pointer;
  display: inline-flex; align-items: center; gap: 6px;
}
.pa-scope button:disabled { opacity: 0.3; cursor: default; }
.pa-scope button:focus-visible { outline: 2px solid var(--pa-accent); outline-offset: 2px; }
.pa-btn-row { display: flex; gap: 8px; margin-top: 8px; flex-wrap: wrap; }
.pa-btn-primary { background: var(--pa-accent); color: #fff; border-color: var(--pa-accent); }
.pa-chip-btn { border-color: var(--pa-accent-line); background: var(--pa-accent-bg); color: var(--pa-accent); border-radius: 999px; padding: 6px 14px; font-family: var(--pa-mono); }
.pa-chip-btn.active { background: var(--pa-accent); color: #fff; }
.pa-chip-row { display: flex; gap: 8px; flex-wrap: wrap; margin-bottom: 10px; }
.pa-back-btn { width: 36px; height: 36px; padding: 0; justify-content: center; border-color: var(--pa-accent-line); }

/* ---- Panel topik ---- */
.pa-topic-header { display: flex; align-items: center; gap: 10px; margin-bottom: 1rem; }
.pa-topic-header h2 { font-size: 20px; margin: 0; color: var(--pa-accent); }
.pa-problem-title { text-align: center; font-size: 22px; margin-bottom: 1rem; font-family: var(--pa-mono); font-weight: 500; }
.pa-stage { min-height: 150px; display: flex; flex-direction: column; align-items: center; gap: 10px; padding: 0.5rem 0 1rem; }
.pa-explanation { font-size: 15px; color: var(--pa-ink-soft); text-align: center; line-height: 1.6; min-height: 44px; padding: 0 0.5rem; }
.pa-controls { display: flex; align-items: center; justify-content: center; gap: 16px; margin-top: 1rem; }
.pa-controls button { width: 40px; height: 40px; padding: 0; justify-content: center; border-radius: 10px; }
.pa-step-counter { font-size: 13px; color: var(--pa-ink-soft); min-width: 100px; text-align: center; }
.pa-reset-row { display: flex; justify-content: center; margin-top: 1rem; }

/* ---- Kolom bersusun (tambah/kurang/kali/bagi) ---- */
.pa-row { display: flex; }
.pa-cell { width: 30px; height: 34px; display: flex; align-items: center; justify-content: center; font-family: var(--pa-mono); font-size: 18px; color: var(--pa-ink); border-radius: 4px; }
.pa-cell.blank { color: transparent; }
.pa-cell.hl-a { background: var(--pa-accent-bg); color: var(--pa-accent); font-weight: 700; }
.pa-cell.hl-b { background: #FBE7DA; color: #D8672E; font-weight: 700; }
.pa-cell.hl-result, .pa-cell.hl-final { background: var(--pa-accent-bg); color: var(--pa-accent); font-weight: 700; }
.pa-cell.op { color: var(--pa-ink-soft); font-size: 16px; }
.pa-divider { width: 100%; max-width: 260px; border-top: 2px solid var(--pa-ink); margin: 2px 0; opacity: 0.5; }
.pa-equation { background: var(--pa-accent-bg); border: 1.5px solid var(--pa-accent-line); border-radius: 12px; padding: 10px 16px; font-family: var(--pa-mono); font-size: 15px; text-align: center; color: var(--pa-ink); }
.pa-final-answer { font-size: 26px; font-weight: 700; text-align: center; margin-top: 6px; font-family: var(--pa-display); color: var(--pa-accent); }

/* ---- Pembagian bersusun panjang ---- */
.pa-div-quotient-box { display: flex; align-items: flex-end; gap: 4px; }
.pa-div-box { border-left: 2px solid var(--pa-ink); border-top: 2px solid var(--pa-ink); padding: 4px 8px 2px; }
.pa-divisor-box { display: flex; align-items: center; padding-right: 8px; font-family: var(--pa-mono); font-size: 18px; }

/* ---- Pecahan ---- */
.pa-frac-bar { display: flex; width: 220px; height: 36px; border: 2px solid var(--pa-ink); border-radius: 6px; overflow: hidden; }
.pa-frac-bar .seg { flex: 1; border-right: 1px solid var(--pa-ink); }
.pa-frac-bar .seg:last-child { border-right: none; }
.pa-frac-bar .seg.shaded { background: var(--pa-accent); }
.pa-frac-row { display: flex; align-items: center; gap: 12px; }
.pa-frac-chip { display: inline-flex; flex-direction: column; align-items: center; font-family: var(--pa-mono); line-height: 1.1; font-size: 18px; }
.pa-frac-chip .fn { border-bottom: 2px solid currentColor; padding: 0 6px; }
.pa-frac-chip .fd { padding: 0 6px; }
.pa-grid-area { display: inline-grid; border: 2px solid var(--pa-ink); border-radius: 4px; overflow: hidden; }
.pa-grid-area .gcell { border: 0.5px solid var(--pa-ink-soft); width: 26px; height: 26px; }
.pa-grid-area .gcell.shade-a { background: var(--pa-accent-bg); }
.pa-grid-area .gcell.shade-b { background: #FBE7DA; }
.pa-grid-area .gcell.shade-both { background: var(--pa-accent); }

/* ---- Daftar chip (KPK/FPB, faktor, kelipatan) ---- */
.pa-chip-list { display: flex; gap: 8px; flex-wrap: wrap; justify-content: center; max-width: 520px; }
.pa-num-chip { border: 1.5px solid var(--pa-ink-soft); border-radius: 8px; padding: 4px 10px; font-family: var(--pa-mono); font-size: 14px; color: var(--pa-ink-soft); }
.pa-num-chip.common { border-color: var(--pa-accent); background: var(--pa-accent-bg); color: var(--pa-accent); font-weight: 700; }
.pa-list-label { font-size: 13px; color: var(--pa-ink-soft); margin-bottom: 4px; text-align: center; }

/* ---- Garis bilangan (kelas 1, 2, 6) ---- */
.pa-number-line { width: 100%; max-width: 480px; }
.pa-number-line .nl-track { stroke: var(--pa-ink); stroke-width: 2; }
.pa-number-line .nl-tick { stroke: var(--pa-ink-soft); stroke-width: 1.5; }
.pa-number-line .nl-label { font-family: var(--pa-mono); font-size: 11px; fill: var(--pa-ink-soft); text-anchor: middle; }
.pa-number-line .nl-point { fill: var(--pa-accent); }
.pa-number-line .nl-point-label { font-family: var(--pa-mono); font-size: 13px; fill: var(--pa-accent); font-weight: 700; text-anchor: middle; }
.pa-number-line .nl-jump { fill: none; stroke: var(--pa-accent); stroke-width: 2; stroke-linecap: round; }

/* ---- Menu topik (index per kelas) ---- */
.pa-menu-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(260px, 1fr)); gap: 16px; }
.pa-topic-card {
  position: relative; background: #fff; border-radius: 16px; padding: 1.1rem 1.2rem 1.2rem;
  border: 1.5px solid var(--pa-accent-line); border-top: 6px solid var(--pa-accent);
  cursor: pointer; text-align: left; display: flex; flex-direction: column; gap: 8px;
}
.pa-topic-card .pa-stamp {
  position: absolute; top: 10px; right: 12px; width: 30px; height: 30px; border-radius: 50%;
  border: 1.5px dashed var(--pa-accent); color: var(--pa-accent); display: flex; align-items: center;
  justify-content: center; font-family: var(--pa-display); font-weight: 700; font-size: 13px;
}
.pa-topic-card .pa-icon-circle { width: 44px; height: 44px; border-radius: 50%; background: var(--pa-accent-bg); color: var(--pa-accent); display: flex; align-items: center; justify-content: center; font-size: 22px; }
.pa-topic-card h3 { font-size: 18px; margin: 2px 0 0; color: var(--pa-accent); }
.pa-topic-card p { font-size: 13.5px; color: var(--pa-ink-soft); margin: 0; line-height: 1.5; }
.pa-topic-card .pa-start-label { margin-top: 4px; font-size: 13px; font-weight: 700; color: var(--pa-accent); display: flex; align-items: center; gap: 4px; }
.pa-topic-card:hover { border-color: var(--pa-accent); }
.pa-topic-panel { display: none; }

.pa-sr-only { position:absolute; width:1px; height:1px; overflow:hidden; clip:rect(0,0,0,0); white-space:nowrap; }

/* ---- Gerbang PIN ---- */
.pa-pin-overlay {
  position: fixed; inset: 0; background: #FFF9EE;
  background-image: repeating-linear-gradient(180deg, rgba(58,52,40,0.05) 0px, rgba(58,52,40,0.05) 1px, transparent 1px, transparent 34px);
  display: flex; align-items: center; justify-content: center; z-index: 9999; padding: 20px;
}
.pa-pin-box {
  background: #fff; border-radius: 16px; padding: 2rem 1.75rem; max-width: 280px; width: 100%;
  text-align: center; border: 1.5px solid #ddd; box-shadow: 0 8px 24px rgba(0,0,0,0.08);
  font-family: 'Nunito', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
}
.pa-pin-title { font-family: 'Baloo 2', sans-serif; font-weight: 700; font-size: 17px; color: #3A3428; margin-bottom: 14px; }
.pa-pin-input {
  width: 100%; box-sizing: border-box; text-align: center; letter-spacing: 6px; font-size: 20px;
  padding: 10px; border: 1.5px solid #6B6354; border-radius: 10px; margin-bottom: 8px;
}
.pa-pin-err { font-size: 12px; color: #C0392B; min-height: 16px; margin-bottom: 8px; }
.pa-pin-btn { width: 100%; padding: 10px; border-radius: 10px; border: none; background: #6B4FC7; color: #fff; font-weight: 700; cursor: pointer; font-size: 14px; }

/* ---- Animasi: angka "berkedip"/muncul di tiap langkah, supaya tidak statis ----
   Tempel kelas "pa-flash" (selain hl-a/hl-b/hl-result/hl-final) pada digit yang
   BARU muncul di langkah ini. Kelas hl-a/hl-b/hl-n berdenyut terus selama langkah
   itu ditampilkan, menandai "ini yang sedang dikerjakan". */
@keyframes pa-pop-in {
  0%   { transform: scale(0.4); opacity: 0; }
  60%  { transform: scale(1.25); opacity: 1; }
  100% { transform: scale(1); opacity: 1; }
}
@keyframes pa-glow-ring {
  0%, 100% { box-shadow: 0 0 0 0 rgba(255,193,7,0); }
  50%      { box-shadow: 0 0 0 6px rgba(255,193,7,0.55); }
}
@keyframes pa-pulse-ring {
  0%   { box-shadow: 0 0 0 0 currentColor; }
  70%  { box-shadow: 0 0 0 7px transparent; }
  100% { box-shadow: 0 0 0 0 transparent; }
}
@keyframes pa-celebrate {
  0%   { transform: scale(0.5) rotate(-8deg); opacity: 0; }
  50%  { transform: scale(1.15) rotate(4deg); opacity: 1; }
  75%  { transform: scale(0.95) rotate(-2deg); }
  100% { transform: scale(1) rotate(0); }
}
.pa-cell.pa-flash { animation: pa-pop-in 0.45s cubic-bezier(.34,1.56,.64,1), pa-glow-ring 0.9s ease 0.05s; }
.pa-cell.hl-a, .pa-cell.hl-b, .pa-cell.hl-n { animation: pa-pulse-ring 1.3s ease-out infinite; }
.pa-final-answer { animation: pa-celebrate 0.6s cubic-bezier(.34,1.56,.64,1); }
.pa-flash-el { animation: pa-pop-in 0.45s cubic-bezier(.34,1.56,.64,1), pa-glow-ring 0.9s ease 0.05s; }

@keyframes pa-shape-pulse { 0%, 100% { fill-opacity: 0.5; } 50% { fill-opacity: 0.9; } }
.pa-shape-active { animation: pa-shape-pulse 1.2s ease-in-out infinite; }

@media (prefers-reduced-motion: reduce) {
  .pa-cell.pa-flash, .pa-cell.hl-a, .pa-cell.hl-b, .pa-cell.hl-n, .pa-final-answer, .pa-flash-el, .pa-shape-active { animation: none !important; }
}