/* Shared styles for Area Shikaku 3-page flow */
:root {
  --as-navy: #1f2859;
  --as-navy-2: #172554;
  --as-purple: #4f46e5;
  --as-blue: #2563eb;
  --as-sky: #38bdf8;
  --as-gold: #f6c453;
  --as-green: #16a34a;
  --as-text: #24304f;
  --as-muted: #5d6a86;
  --as-card: rgba(255,255,255,.96);
  --as-line: rgba(31,40,89,.10);
  --as-shadow: 0 18px 46px rgba(36,22,111,.10);
  --as-shadow-soft: 0 14px 32px rgba(36,22,111,.08);
}

html { scroll-behavior: smooth; }
body {
  font-family: 'Kanit', sans-serif;
  color: var(--as-text);
  overflow-x: hidden;
}

.area-shikaku-page {
  padding: 30px 0 68px;
}
.area-shikaku-wrap {
  display: grid;
  gap: 18px;
}
.area-card,
.hero-card,
.play-card,
.side-panel,
.mini-card {
  background: var(--as-card);
  border: 1px solid var(--as-line);
  border-radius: 28px;
  box-shadow: var(--as-shadow-soft);
  backdrop-filter: blur(8px);
}
.hero-card {
  position: relative;
  overflow: hidden;
  padding: clamp(22px, 4vw, 38px);
  background:
    radial-gradient(circle at 12% 10%, rgba(246,196,83,.36), transparent 28%),
    radial-gradient(circle at 90% 16%, rgba(56,189,248,.28), transparent 34%),
    radial-gradient(circle at 80% 86%, rgba(34,197,94,.18), transparent 38%),
    linear-gradient(135deg, rgba(255,255,255,.98), rgba(245,243,255,.96));
}
.hero-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.04fr) minmax(280px, .86fr);
  align-items: center;
  gap: 24px;
}
.page-intro {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  align-items: start;
  gap: 16px;
}
.page-intro.compact { grid-template-columns: 1fr; }
.page-actions, .hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 18px;
}
.pill {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 34px;
  padding: 7px 14px;
  border-radius: 999px;
  background: linear-gradient(135deg, #eef2ff, #ede9fe);
  border: 1px solid rgba(79,70,229,.18);
  color: #4338ca;
  font-size: 13px;
  font-weight: 900;
  line-height: 1;
}
.hero-card h1,
.area-card h2,
.play-card h2,
.side-panel h2,
.mini-card h3,
.page-intro h1,
.page-intro h2 {
  margin: 0;
  color: var(--as-navy-2);
  line-height: 1.12;
}
.hero-card h1,
.page-intro h1 { font-size: clamp(34px, 5vw, 56px); letter-spacing: -.04em; }
.page-intro h2 { font-size: clamp(28px, 4vw, 42px); letter-spacing: -.03em; }
.hero-card p,
.area-card p,
.play-card p,
.side-panel p,
.page-intro p,
.mini-card p,
.demo-caption,
.steps,
.steps li,
.formula-box,
.status-box,
.score-item span,
.board-top p,
.toolbar-note,
.quick-link {
  color: var(--as-muted);
}
.hero-card p,
.page-intro p { font-size: 18px; line-height: 1.75; margin: 12px 0 0; }
.area-card,
.play-card,
.side-panel,
.mini-card { padding: 22px; }
.quick-grid,
.rule-grid,
.flow-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 16px;
}
.flow-grid.five { grid-template-columns: repeat(5, minmax(0, 1fr)); }
.quick-grid.two { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.mini-card {
  display: grid;
  gap: 10px;
}
.icon-badge {
  width: 54px;
  height: 54px;
  border-radius: 18px;
  display: grid;
  place-items: center;
  background: linear-gradient(135deg, #fff7ed, #eef2ff);
  font-size: 28px;
}
.btn,
.btn-ghost,
.btn-soft,
.small-btn,
.factor-btn,
.level-btn {
  border: 0;
  border-radius: 999px;
  font-family: inherit;
  font-weight: 900;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  text-decoration: none;
  cursor: pointer;
  transition: transform .16s ease, box-shadow .16s ease, opacity .16s ease;
}
.btn:hover,
.btn-ghost:hover,
.btn-soft:hover,
.small-btn:hover,
.factor-btn:hover,
.level-btn:hover { transform: translateY(-2px); }
.btn {
  min-height: 48px;
  padding: 12px 18px;
  color: #fff;
  background: linear-gradient(135deg, #166534, #22c55e);
  box-shadow: 0 14px 28px rgba(34,197,94,.22);
}
.btn-ghost {
  min-height: 48px;
  padding: 12px 18px;
  color: var(--as-navy-2);
  background: #fff;
  border: 1px solid var(--as-line);
  box-shadow: 0 12px 22px rgba(36,22,111,.07);
}
.btn-soft {
  min-height: 48px;
  padding: 12px 18px;
  color: #fff;
  background: linear-gradient(135deg, var(--as-purple), var(--as-blue));
  box-shadow: 0 14px 28px rgba(79,70,229,.22);
}
.btn.is-disabled,
.btn-ghost.is-disabled,
.btn-soft.is-disabled {
  opacity: .65;
  cursor: not-allowed;
}
.demo-box {
  background: rgba(255,255,255,.82);
  border: 1px solid var(--as-line);
  border-radius: 24px;
  padding: 16px;
  box-shadow: var(--as-shadow-soft);
}
.mini-grid {
  display: grid;
  grid-template-columns: repeat(6, 1fr);
  gap: 5px;
  aspect-ratio: 1 / .72;
}
.mini-cell {
  border-radius: 10px;
  border: 1px solid #dbe4ff;
  background: #eef2ff;
  display: grid;
  place-items: center;
  color: var(--as-navy-2);
  font-weight: 900;
}
.mini-cell.a { background: #dbeafe; border-color: #93c5fd; }
.mini-cell.b { background: #dcfce7; border-color: #86efac; }
.mini-cell.c { background: #fef3c7; border-color: #f6c453; }
.demo-caption {
  margin: 10px 2px 0;
  font-size: 14px;
  line-height: 1.55;
  font-weight: 700;
}
.explorer-grid {
  display: grid;
  grid-template-columns: minmax(0, .92fr) minmax(0, 1.08fr);
  gap: 18px;
}
.factor-controls,
.level-row {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}
.factor-controls { margin-top: 14px; }
.factor-btn,
.level-btn,
.small-btn {
  min-height: 42px;
  padding: 9px 14px;
  color: var(--as-navy-2);
  background: #fff;
  border: 1px solid var(--as-line);
  box-shadow: 0 10px 20px rgba(36,22,111,.06);
}
.factor-btn.active,
.level-btn.active,
.small-btn.primary {
  color: #fff;
  background: linear-gradient(135deg, var(--as-purple), var(--as-blue));
}
.factor-preview {
  margin-top: 14px;
  min-height: 190px;
  border-radius: 22px;
  background:
    linear-gradient(90deg, rgba(36,22,111,.05) 1px, transparent 1px),
    linear-gradient(0deg, rgba(36,22,111,.05) 1px, transparent 1px),
    linear-gradient(135deg, #f8fbff, #fffdf5);
  background-size: 28px 28px, 28px 28px, auto;
  border: 1px solid rgba(36,22,111,.08);
  display: grid;
  place-items: center;
  padding: 18px;
  overflow: hidden;
}
.preview-rect {
  --sq: 26px;
  display: grid;
  gap: 4px;
  max-width: 100%;
  max-height: 100%;
  filter: drop-shadow(0 12px 16px rgba(36,22,111,.10));
}
.preview-square {
  width: var(--sq);
  height: var(--sq);
  border-radius: max(4px, calc(var(--sq) * .27));
  background: #86efac;
  border: 1px solid #22c55e;
  display: grid;
  place-items: center;
  color: #065f46;
  font-size: clamp(8px, calc(var(--sq) * .42), 10px);
  font-weight: 900;
}
.formula-box {
  margin-top: 12px;
  border-radius: 18px;
  padding: 13px 15px;
  background: #f0fdf4;
  border: 1px solid #bbf7d0;
  color: #166534;
  font-weight: 900;
}
.steps {
  margin: 14px 0 0;
  padding-left: 20px;
  line-height: 1.7;
}
.steps strong { color: var(--as-navy-2); }
.play-layout {
  display: grid;
  grid-template-columns: minmax(0, .72fr) minmax(300px, .28fr);
  gap: 18px;
  align-items: start;
}
.play-card {
  padding: clamp(16px, 3vw, 24px);
}
.board-top {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 16px;
  margin-bottom: 16px;
}
.board-wrap { display: grid; place-items: center; }
.shikaku-board {
  --size: 5;
  width: min(100%, 560px);
  aspect-ratio: 1;
  position: relative;
  display: grid;
  grid-template-columns: repeat(var(--size), 1fr);
  grid-template-rows: repeat(var(--size), 1fr);
  gap: 5px;
  padding: 8px;
  border-radius: 24px;
  background:
    linear-gradient(90deg, rgba(36,22,111,.16) 1px, transparent 1px),
    linear-gradient(0deg, rgba(36,22,111,.16) 1px, transparent 1px),
    linear-gradient(135deg, #f8fbff, #fffdf5);
  background-size: calc(100% / var(--size)) calc(100% / var(--size));
  box-shadow: inset 0 0 0 2px rgba(36,22,111,.22), 0 18px 42px rgba(36,22,111,.13);
  touch-action: none;
  user-select: none;
  overflow: hidden;
}
.overlay-layer {
  position: absolute;
  inset: 8px;
  z-index: 3;
  display: grid;
  grid-template-columns: repeat(var(--size), 1fr);
  grid-template-rows: repeat(var(--size), 1fr);
  gap: 5px;
  pointer-events: none;
}
.region-block {
  border-radius: 14px;
  background: var(--fill, rgba(37,99,235,.22));
  border: 3px solid var(--stroke, rgba(37,99,235,.58));
  box-shadow: inset 0 0 0 1px rgba(255,255,255,.42), 0 8px 18px rgba(36,22,111,.06);
}
.region-block.hint-block { opacity: .86; }
.region-block.locked-block { opacity: .92; }
.region-block.preview-block { opacity: .74; }
.cell {
  position: relative;
  border: 0;
  border-radius: 13px;
  background: rgba(248,250,252,.84);
  display: grid;
  place-items: center;
  color: var(--as-navy-2);
  font-family: inherit;
  font-weight: 900;
  font-size: clamp(19px, 4vw, 28px);
  cursor: crosshair;
  box-shadow: inset 0 0 0 1px rgba(36,22,111,.08);
  z-index: 2;
  transition: transform .08s ease, box-shadow .12s ease, background .12s ease;
  overflow: hidden;
}
.cell:hover { transform: translateY(-1px); }
.cell.clue { box-shadow: inset 0 0 0 2px rgba(36,22,111,.14), 0 8px 16px rgba(36,22,111,.06); }
.cell.locked,
.cell.preview,
.cell.hint { background: transparent !important; box-shadow: none !important; }
.side-panel { position: sticky; top: 90px; }
.status-box {
  margin: 14px 0;
  padding: 14px 15px;
  border-radius: 18px;
  background: #eff6ff;
  border: 1px solid #bfdbfe;
  color: #1e3a8a;
  font-weight: 800;
  line-height: 1.6;
}
.status-box.ok { background: #ecfdf5; border-color: #86efac; color: #166534; }
.status-box.bad { background: #fff1f2; border-color: #fda4af; color: #9f1239; }
.score-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 10px;
  margin: 14px 0;
}
.score-item {
  border-radius: 18px;
  padding: 12px;
  background: #f8fafc;
  border: 1px solid #e2e8f0;
}
.score-item strong {
  display: block;
  color: var(--as-navy-2);
  font-size: 24px;
  line-height: 1;
}
.tool-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 10px;
  margin-top: 14px;
}
.note-link,
.quick-link {
  display: block;
  margin-top: 12px;
  text-align: center;
  border-radius: 16px;
  padding: 12px 14px;
  text-decoration: none;
  font-weight: 900;
  background: #f8fafc;
  border: 1px dashed #cbd5e1;
}
.complete-banner {
  display: none;
  margin-top: 16px;
  border-radius: 22px;
  padding: 16px;
  background: linear-gradient(135deg, #dcfce7, #fef3c7);
  border: 1px solid #86efac;
  color: #166534;
  font-weight: 900;
  line-height: 1.6;
}
.complete-banner.show { display: block; }
.page-nav {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}
.page-nav .btn-ghost,
.page-nav .btn-soft,
.page-nav .btn { min-height: 44px; }
.toolbar-note {
  font-size: 13px;
  font-weight: 700;
  margin-top: 10px;
}
.site-header .nav-wrap {
  display: flex;
  align-items: center;
  gap: 14px;
  flex-wrap: nowrap;
}
.site-header .brand { flex: 0 1 auto; min-width: 0; }
.site-header .main-nav { flex: 1 1 auto; min-width: 0; }
.site-header .header-actions {
  margin-left: auto;
  display: flex;
  align-items: center;
  gap: 10px;
  flex-wrap: nowrap;
  flex: 0 0 auto;
  min-width: max-content;
}
.site-header .header-actions > * { flex: 0 0 auto; }
.profile-fallback {
  min-height: 44px;
  padding: 0 14px;
  border-radius: 999px;
  text-decoration: none;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  font-weight: 800;
  color: #ffffff;
  background: linear-gradient(135deg, rgba(79,70,229,.92), rgba(37,99,235,.92));
  border: 1px solid rgba(255,255,255,.18);
  box-shadow: 0 12px 22px rgba(36,22,111,.18);
  white-space: nowrap;
}
.profile-fallback .icon { font-size: 16px; line-height: 1; }
.profile-fallback .label { line-height: 1; }

/* Dark theme lock */
:root[data-theme="dark"] .area-shikaku-page .hero-card {
  background:
    radial-gradient(circle at 10% 12%, rgba(246,196,83,.15), transparent 28%),
    radial-gradient(circle at 90% 18%, rgba(56,189,248,.14), transparent 34%),
    radial-gradient(circle at 80% 88%, rgba(34,197,94,.10), transparent 38%),
    linear-gradient(135deg, #201a4a 0%, #171b3a 50%, #10253b 100%) !important;
  border-color: rgba(139,130,246,.34) !important;
  box-shadow: 0 24px 60px rgba(0,0,0,.26) !important;
}
:root[data-theme="dark"] .area-shikaku-page .hero-card h1,
:root[data-theme="dark"] .area-shikaku-page .page-intro h1,
:root[data-theme="dark"] .area-shikaku-page .page-intro h2,
:root[data-theme="dark"] .area-shikaku-page .area-card h2,
:root[data-theme="dark"] .area-shikaku-page .play-card h2,
:root[data-theme="dark"] .area-shikaku-page .side-panel h2,
:root[data-theme="dark"] .area-shikaku-page .mini-card h3 { color: #f8fafc !important; }
:root[data-theme="dark"] .area-shikaku-page .hero-card p,
:root[data-theme="dark"] .area-shikaku-page .page-intro p,
:root[data-theme="dark"] .area-shikaku-page .area-card p,
:root[data-theme="dark"] .area-shikaku-page .play-card p,
:root[data-theme="dark"] .area-shikaku-page .side-panel p,
:root[data-theme="dark"] .area-shikaku-page .demo-caption,
:root[data-theme="dark"] .area-shikaku-page .steps,
:root[data-theme="dark"] .area-shikaku-page .steps li,
:root[data-theme="dark"] .area-shikaku-page .toolbar-note,
:root[data-theme="dark"] .area-shikaku-page .note-link,
:root[data-theme="dark"] .area-shikaku-page .quick-link,
:root[data-theme="dark"] .area-shikaku-page .board-top p { color: #e2e8f0 !important; }
:root[data-theme="dark"] .area-shikaku-page .steps strong { color: #93c5fd !important; }
:root[data-theme="dark"] .area-shikaku-page .steps li::marker { color: #c4b5fd !important; }
:root[data-theme="dark"] .area-shikaku-page .area-card,
:root[data-theme="dark"] .area-shikaku-page .play-card,
:root[data-theme="dark"] .area-shikaku-page .side-panel,
:root[data-theme="dark"] .area-shikaku-page .mini-card,
:root[data-theme="dark"] .area-shikaku-page .demo-box {
  background: linear-gradient(145deg, rgba(28,27,63,.97), rgba(18,27,49,.97)) !important;
  border-color: rgba(129,140,248,.24) !important;
  box-shadow: 0 18px 46px rgba(0,0,0,.22) !important;
}
:root[data-theme="dark"] .area-shikaku-page .icon-badge {
  background: linear-gradient(135deg, #f8fafc, #e0e7ff) !important;
}
:root[data-theme="dark"] .area-shikaku-page .pill {
  color: #ddd6fe !important;
  background: rgba(79,70,229,.20) !important;
  border-color: rgba(167,139,250,.36) !important;
}
:root[data-theme="dark"] .area-shikaku-page .btn-ghost,
:root[data-theme="dark"] .area-shikaku-page .small-btn,
:root[data-theme="dark"] .area-shikaku-page .factor-btn,
:root[data-theme="dark"] .area-shikaku-page .level-btn,
:root[data-theme="dark"] .area-shikaku-page .note-link,
:root[data-theme="dark"] .area-shikaku-page .quick-link {
  color: #e2e8f0 !important;
  background: #20233f !important;
  border-color: rgba(148,163,184,.26) !important;
  box-shadow: none !important;
}
:root[data-theme="dark"] .area-shikaku-page .btn-soft,
:root[data-theme="dark"] .area-shikaku-page .small-btn.primary,
:root[data-theme="dark"] .area-shikaku-page .factor-btn.active,
:root[data-theme="dark"] .area-shikaku-page .level-btn.active {
  color: #fff !important;
  background: linear-gradient(135deg, #6d5dfc, #2563eb) !important;
  border-color: rgba(165,180,252,.48) !important;
}
:root[data-theme="dark"] .area-shikaku-page .factor-preview {
  background:
    linear-gradient(90deg, rgba(148,163,184,.10) 1px, transparent 1px),
    linear-gradient(0deg, rgba(148,163,184,.10) 1px, transparent 1px),
    linear-gradient(145deg, #111827, #172033) !important;
  border-color: rgba(148,163,184,.22) !important;
}
:root[data-theme="dark"] .area-shikaku-page .formula-box {
  color: #bbf7d0 !important;
  background: rgba(22,101,52,.22) !important;
  border-color: rgba(74,222,128,.32) !important;
}
:root[data-theme="dark"] .area-shikaku-page .status-box {
  color: #dbeafe !important;
  background: rgba(30,58,138,.34) !important;
  border-color: rgba(96,165,250,.42) !important;
}
:root[data-theme="dark"] .area-shikaku-page .status-box.ok {
  color: #bbf7d0 !important;
  background: rgba(22,101,52,.30) !important;
  border-color: rgba(74,222,128,.42) !important;
}
:root[data-theme="dark"] .area-shikaku-page .status-box.bad {
  color: #fecdd3 !important;
  background: rgba(159,18,57,.28) !important;
  border-color: rgba(251,113,133,.44) !important;
}
:root[data-theme="dark"] .area-shikaku-page .score-item {
  background: rgba(15,23,42,.74) !important;
  border-color: rgba(148,163,184,.20) !important;
}
:root[data-theme="dark"] .area-shikaku-page .score-item strong { color: #f8fafc !important; }
:root[data-theme="dark"] .area-shikaku-page .score-item span { color: #aebbd1 !important; }

@media (max-width: 1080px) {
  .hero-grid,
  .explorer-grid,
  .play-layout,
  .quick-grid,
  .rule-grid,
  .flow-grid.five { grid-template-columns: 1fr; }
  .side-panel { position: static; }
}

@media (max-width: 820px) {
  .area-shikaku-page { padding: 18px 0 56px; }
  .area-shikaku-wrap { gap: 14px; }
  .hero-card,
  .area-card,
  .play-card,
  .side-panel,
  .mini-card { border-radius: 22px; }
  .hero-card,
  .area-card,
  .play-card,
  .side-panel,
  .mini-card { padding: 16px; }
  .hero-grid,
  .page-intro,
  .quick-grid,
  .rule-grid,
  .flow-grid { grid-template-columns: 1fr; }
  .hero-card h1,
  .page-intro h1 { font-size: clamp(28px, 7vw, 40px); }
  .page-intro h2 { font-size: clamp(24px, 6vw, 34px); }
  .hero-card p,
  .page-intro p { font-size: 14px; line-height: 1.55; }
  .page-actions,
  .hero-actions { gap: 8px; }
  .btn,
  .btn-ghost,
  .btn-soft { min-height: 42px; padding: 10px 14px; font-size: 13px; box-shadow: none; }
  .pill { min-height: 30px; font-size: 11px; padding: 6px 10px; }
  .demo-box { padding: 12px; border-radius: 18px; }
  .demo-caption { font-size: 12px; line-height: 1.45; }
  .icon-badge { width: 40px; height: 40px; border-radius: 14px; font-size: 22px; }
  .mini-card { gap: 8px; }
  .mini-card h3,
  .area-card h2,
  .play-card h2,
  .side-panel h2 { font-size: 22px; }
  .factor-controls { gap: 6px; margin-top: 10px; }
  .factor-btn,
  .level-btn,
  .small-btn { min-height: 38px; padding: 8px 11px; font-size: 13px; box-shadow: none; }
  .factor-preview { min-height: 130px; border-radius: 16px; padding: 12px; background-size: 22px 22px, 22px 22px, auto; }
  .preview-rect { --sq: 20px; gap: 3px; }
  .formula-box { padding: 10px 12px; border-radius: 14px; font-size: 13px; line-height: 1.45; }
  .steps { margin-top: 10px; padding-left: 18px; font-size: 13px; line-height: 1.55; }
  .play-layout { gap: 14px; }
  .board-top { display: block; margin-bottom: 12px; }
  .level-row { margin-top: 10px; gap: 6px; }
  .shikaku-board { width: min(100%, 400px); gap: 4px; padding: 6px; border-radius: 18px; }
  .overlay-layer { inset: 6px; gap: 4px; }
  .region-block { border-width: 2px; border-radius: 10px; }
  .cell { border-radius: 10px; font-size: 18px; }
  .cell:hover { transform: none; }
  .status-box { margin: 10px 0; padding: 10px 12px; border-radius: 14px; font-size: 13px; line-height: 1.45; }
  .score-item { border-radius: 14px; padding: 10px; }
  .score-item strong { font-size: 22px; }
  .score-item span { font-size: 11px; }
  .tool-row { gap: 8px; margin-top: 10px; }
  .complete-banner { margin-top: 10px; padding: 12px; border-radius: 16px; font-size: 13px; line-height: 1.45; }
}

@media (max-width: 560px) {
  .site-header .nav-wrap { gap: 8px; }
  .site-header .brand { min-width: 0; }
  .site-header .header-actions { gap: 6px; }
  .profile-fallback { min-width: 38px; padding: 0 10px; }
  .profile-fallback .label { display: none; }
  .hero-actions,
  .page-actions { display: grid; grid-template-columns: 1fr 1fr; }
  .hero-actions > :first-child,
  .page-actions > :first-child { grid-column: 1 / -1; }
  .btn,
  .btn-ghost,
  .btn-soft { width: 100%; min-height: 38px; padding: 8px 10px; font-size: 12px; }
  .hero-card h1,
  .page-intro h1 { font-size: clamp(24px, 7.5vw, 32px); }
  .page-intro h2 { font-size: clamp(22px, 6vw, 29px); }
  .hero-card p,
  .page-intro p,
  .area-card p,
  .play-card p,
  .side-panel p,
  .mini-card p { font-size: 13px; line-height: 1.45; }
  .mini-grid { gap: 4px; }
  .mini-cell { min-height: 42px; }
  .tool-row,
  .score-row { grid-template-columns: 1fr 1fr; }
  .shikaku-board { width: 100%; max-width: 340px; }
  .factor-preview { min-height: 114px; }
  .preview-rect { --sq: 16px !important; }
}


.stage-grid { align-items: stretch; }
.stage-card { position: relative; }
.current-stage { box-shadow: 0 16px 32px rgba(79,70,229,.16); }
.static-label {
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 46px;
  font-weight: 900;
  color: #4338ca;
  background: linear-gradient(135deg, #eef2ff, #ede9fe);
  border-style: solid;
}
.compact-summary-card {
  padding: 18px 22px;
  display: grid;
  gap: 8px;
}
.compact-summary-card p { margin: 0; }

@media (max-width: 820px) {
  .compact-summary-card { padding: 16px; gap: 6px; }
  .compact-summary-card h2 { font-size: 22px; }
}

@media (max-width: 560px) {
  .area-shikaku-page { padding: 14px 0 42px; }
  .area-shikaku-wrap { gap: 12px; }
  .hero-card,
  .area-card,
  .play-card,
  .side-panel,
  .mini-card { padding: 14px; border-radius: 18px; }
  .hero-grid { gap: 12px; }
  .page-actions, .hero-actions { gap: 7px; margin-top: 12px; }
  .btn, .btn-ghost, .btn-soft {
    min-height: 34px;
    padding: 7px 10px;
    font-size: 11.5px;
    border-radius: 14px;
  }
  .pill {
    min-height: 26px;
    padding: 5px 9px;
    font-size: 10px;
  }
  .icon-badge {
    width: 34px;
    height: 34px;
    border-radius: 11px;
    font-size: 18px;
  }
  .mini-card { gap: 6px; }
  .mini-card h3,
  .area-card h2,
  .play-card h2,
  .side-panel h2 { font-size: 20px; }
  .quick-grid, .rule-grid, .flow-grid { gap: 10px; }
  .mini-card p,
  .area-card p,
  .play-card p,
  .side-panel p,
  .hero-card p,
  .page-intro p { font-size: 12.5px; line-height: 1.4; }
  .demo-box { padding: 10px; border-radius: 14px; }
  .mini-grid { gap: 3px; }
  .mini-cell { min-height: 34px; border-radius: 8px; font-size: 13px; }
  .demo-caption { font-size: 11px; margin-top: 8px; }
  .factor-controls, .level-row { gap: 6px; }
  .factor-btn, .level-btn, .small-btn {
    min-height: 34px;
    padding: 7px 9px;
    font-size: 12px;
    border-radius: 12px;
  }
  .factor-preview {
    min-height: 100px;
    padding: 10px;
    background-size: 18px 18px, 18px 18px, auto;
  }
  .preview-rect { --sq: 15px !important; gap: 2px; }
  .formula-box {
    margin-top: 10px;
    padding: 9px 10px;
    border-radius: 12px;
    font-size: 12px;
  }
  .steps { font-size: 12px; line-height: 1.45; }
  .board-top { margin-bottom: 10px; }
  .board-top .pill { margin-bottom: 4px; }
  .shikaku-board { max-width: 320px; padding: 5px; gap: 3px; border-radius: 16px; }
  .overlay-layer { inset: 5px; gap: 3px; }
  .cell { border-radius: 8px; font-size: 16px; }
  .status-box, .complete-banner, .toolbar-note { font-size: 12px; }
  .score-item strong { font-size: 20px; }
  .quick-link, .note-link { margin-top: 10px; padding: 10px 12px; border-radius: 12px; font-size: 12px; }
  .tool-row { gap: 7px; }
  .compact-summary-card { display: none; }
}