/* ============================================================
   PlayBlog.site — Design System
   ============================================================
   Deep, organic palette. No transparent overlays. Calibrated for
   WCAG AA contrast. Tailwind is loaded via CDN in the header; this
   file adds the custom design tokens, typography, and motion that
   make the site distinctive rather than a generic Tailwind template.
   ============================================================ */

:root {
  /* Color tokens — mirror config.php COLOR array */
  --ink:        #0E1B2C;
  --ink-soft:   #2A3B52;
  --ink-mute:   #4F5E76;
  --cream:      #F6EFE2;
  --parchment:  #EFE5D2;
  --parchment-2:#E5D7BB;
  --amber:      #B8651A;
  --amber-lt:   #E8A04D;
  --amber-glow: rgba(184, 101, 26, 0.18);
  --moss:       #3F5E3A;
  --moss-lt:    #5E8456;
  --claret:     #7A1F2B;
  --claret-lt:  #A8424F;
  --bronze:     #6B4A2A;
  --sand:       #D9C7A3;
  --sand-soft:  #E8DCBE;
  --gold:       #C9A24B;

  /* Typography */
  --font-display: 'Fraunces', 'Playfair Display', Georgia, serif;
  --font-body:    'Inter', system-ui, -apple-system, 'Segoe UI', sans-serif;
  --font-mono:    'JetBrains Mono', 'Fira Code', ui-monospace, monospace;

  /* Spacing scale — 4px base */
  --s-1: 0.25rem;
  --s-2: 0.5rem;
  --s-3: 0.75rem;
  --s-4: 1rem;
  --s-5: 1.5rem;
  --s-6: 2rem;
  --s-7: 3rem;
  --s-8: 4rem;
  --s-9: 6rem;

  /* Radius */
  --r-sm: 6px;
  --r-md: 10px;
  --r-lg: 16px;
  --r-xl: 24px;

  /* Shadows — soft, warm, not harsh */
  --shadow-sm: 0 1px 2px rgba(14, 27, 44, 0.06), 0 1px 1px rgba(14, 27, 44, 0.04);
  --shadow-md: 0 4px 12px rgba(14, 27, 44, 0.08), 0 2px 4px rgba(14, 27, 44, 0.06);
  --shadow-lg: 0 12px 32px rgba(14, 27, 44, 0.12), 0 4px 8px rgba(14, 27, 44, 0.08);
  --shadow-amber: 0 8px 24px rgba(184, 101, 26, 0.22);

  /* Motion */
  --ease-out-soft: cubic-bezier(0.22, 1, 0.36, 1);
  --ease-in-out-soft: cubic-bezier(0.65, 0, 0.35, 1);
  --dur-fast: 180ms;
  --dur: 320ms;
  --dur-slow: 600ms;
}

/* ---------- Base reset / typography ---------- */
* { box-sizing: border-box; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  font-family: var(--font-body);
  font-size: 17px;
  line-height: 1.65;
  color: var(--ink);
  background-color: var(--cream);
  background-image:
    radial-gradient(at 12% 0%, rgba(184, 101, 26, 0.06) 0%, transparent 45%),
    radial-gradient(at 88% 4%, rgba(63, 94, 58, 0.05) 0%, transparent 40%),
    radial-gradient(at 50% 100%, rgba(107, 74, 42, 0.04) 0%, transparent 50%);
  background-attachment: fixed;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-rendering: optimizeLegibility;
}

h1, h2, h3, h4, h5 {
  font-family: var(--font-display);
  font-weight: 600;
  line-height: 1.15;
  letter-spacing: -0.01em;
  color: var(--ink);
  margin: 0 0 var(--s-4) 0;
}
h1 { font-size: clamp(2.2rem, 5vw, 3.4rem); letter-spacing: -0.025em; }
h2 { font-size: clamp(1.6rem, 3.5vw, 2.2rem); letter-spacing: -0.02em; }
h3 { font-size: clamp(1.25rem, 2.5vw, 1.5rem); }
h4 { font-size: 1.1rem; font-weight: 600; }

p { margin: 0 0 var(--s-4) 0; max-width: 70ch; }
a { color: var(--amber); text-decoration: none; transition: color var(--dur-fast) var(--ease-out-soft); }
a:hover { color: var(--claret); text-decoration: underline; text-underline-offset: 3px; }
a:focus-visible { outline: 3px solid var(--amber-lt); outline-offset: 2px; border-radius: 3px; }

strong, b { font-weight: 600; color: var(--ink); }
em { font-style: italic; }
code, pre { font-family: var(--font-mono); font-size: 0.92em; }
code { background: var(--parchment-2); padding: 0.1em 0.4em; border-radius: var(--r-sm); color: var(--claret); }
pre { background: var(--ink); color: var(--cream); padding: var(--s-4); border-radius: var(--r-md); overflow-x: auto; }
pre code { background: transparent; color: inherit; padding: 0; }

blockquote {
  margin: var(--s-5) 0;
  padding: var(--s-4) var(--s-5);
  border-left: 4px solid var(--amber);
  background: var(--parchment);
  border-radius: 0 var(--r-md) var(--r-md) 0;
  font-family: var(--font-display);
  font-style: italic;
  font-size: 1.08em;
  color: var(--ink-soft);
}

hr {
  border: 0;
  height: 1px;
  background: linear-gradient(to right, transparent, var(--sand), transparent);
  margin: var(--s-6) 0;
}

/* ---------- Layout primitives ---------- */
.container {
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 var(--s-5);
}
.container-narrow { max-width: 760px; }
.container-wide   { max-width: 1380px; }

.section { padding: var(--s-8) 0; }
.section-sm { padding: var(--s-6) 0; }

/* ---------- Header / nav ---------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(246, 239, 226, 0.92);
  backdrop-filter: saturate(180%) blur(12px);
  -webkit-backdrop-filter: saturate(180%) blur(12px);
  border-bottom: 1px solid var(--sand);
}
.site-header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--s-4);
  padding: var(--s-3) 0;
}
.brand {
  display: flex;
  align-items: center;
  gap: var(--s-3);
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1.4rem;
  color: var(--ink);
  letter-spacing: -0.02em;
}
.brand:hover { text-decoration: none; color: var(--ink); }
.brand__mark {
  width: 38px; height: 38px;
  display: grid; place-items: center;
  background: linear-gradient(135deg, var(--ink) 0%, var(--ink-soft) 100%);
  color: var(--gold);
  border-radius: var(--r-md);
  font-size: 1.1rem;
  box-shadow: var(--shadow-md), inset 0 1px 0 rgba(255,255,255,0.1);
  transition: transform var(--dur) var(--ease-out-soft);
}
.brand:hover .brand__mark { transform: rotate(-6deg) scale(1.05); }

.nav-primary { display: flex; align-items: center; gap: var(--s-2); }
.nav-primary a {
  padding: var(--s-2) var(--s-3);
  color: var(--ink-soft);
  font-weight: 500;
  font-size: 0.95rem;
  border-radius: var(--r-sm);
  transition: all var(--dur-fast) var(--ease-out-soft);
}
.nav-primary a:hover { color: var(--amber); background: var(--parchment); text-decoration: none; }

.nav-toggle { display: none; }

/* ---------- Hero ---------- */
.hero {
  position: relative;
  padding: var(--s-9) 0 var(--s-8);
  overflow: hidden;
}
.hero__eyebrow {
  display: inline-flex;
  align-items: center;
  gap: var(--s-2);
  padding: var(--s-1) var(--s-3);
  background: var(--parchment);
  border: 1px solid var(--sand);
  border-radius: 999px;
  font-size: 0.82rem;
  font-weight: 600;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--bronze);
  margin-bottom: var(--s-4);
}
.hero__eyebrow::before {
  content: '';
  width: 8px; height: 8px;
  background: var(--amber);
  border-radius: 50%;
  box-shadow: 0 0 0 4px var(--amber-glow);
  animation: pulse-soft 2.4s var(--ease-in-out-soft) infinite;
}
.hero h1 { margin-bottom: var(--s-4); }
.hero h1 .accent { color: var(--amber); font-style: italic; }
.hero__lead {
  font-size: clamp(1.05rem, 2vw, 1.25rem);
  color: var(--ink-soft);
  max-width: 60ch;
  margin-bottom: var(--s-6);
}
.hero__cta { display: flex; flex-wrap: wrap; gap: var(--s-3); margin-bottom: var(--s-7); }

.btn {
  display: inline-flex;
  align-items: center;
  gap: var(--s-2);
  padding: var(--s-3) var(--s-5);
  border-radius: var(--r-md);
  font-weight: 600;
  font-size: 0.98rem;
  letter-spacing: -0.005em;
  cursor: pointer;
  border: none;
  transition: all var(--dur) var(--ease-out-soft);
  text-decoration: none;
}
.btn-primary {
  background: var(--ink);
  color: var(--cream);
  box-shadow: var(--shadow-md);
}
.btn-primary:hover {
  background: var(--amber);
  color: var(--cream);
  transform: translateY(-2px);
  box-shadow: var(--shadow-amber);
  text-decoration: none;
}
.btn-secondary {
  background: transparent;
  color: var(--ink);
  border: 1.5px solid var(--ink);
}
.btn-secondary:hover {
  background: var(--ink);
  color: var(--cream);
  text-decoration: none;
  transform: translateY(-1px);
}
.btn-ghost {
  background: transparent;
  color: var(--ink-soft);
  padding: var(--s-2) var(--s-3);
}
.btn-ghost:hover { color: var(--amber); background: var(--parchment); text-decoration: none; }

/* ---------- Hero stats ---------- */
.hero__stats {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--s-5);
  padding: var(--s-5) 0;
  border-top: 1px solid var(--sand);
  border-bottom: 1px solid var(--sand);
}
.stat__value {
  font-family: var(--font-display);
  font-size: clamp(1.6rem, 3vw, 2.2rem);
  font-weight: 700;
  color: var(--ink);
  letter-spacing: -0.02em;
  line-height: 1;
}
.stat__label {
  font-size: 0.85rem;
  color: var(--ink-mute);
  margin-top: var(--s-2);
}

/* ---------- Cards ---------- */
.card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(290px, 1fr));
  gap: var(--s-5);
}
.card {
  display: flex;
  flex-direction: column;
  background: var(--parchment);
  border: 1px solid var(--sand);
  border-radius: var(--r-lg);
  padding: var(--s-5);
  transition: all var(--dur) var(--ease-out-soft);
  position: relative;
  overflow: hidden;
}
.card::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, transparent 0%, rgba(184, 101, 26, 0.04) 100%);
  opacity: 0;
  transition: opacity var(--dur) var(--ease-out-soft);
  pointer-events: none;
}
.card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
  border-color: var(--amber-lt);
}
.card:hover::before { opacity: 1; }
.card__icon {
  width: 48px; height: 48px;
  display: grid; place-items: center;
  background: var(--ink);
  color: var(--gold);
  border-radius: var(--r-md);
  margin-bottom: var(--s-4);
  font-size: 1.3rem;
}
.card__category {
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--amber);
  margin-bottom: var(--s-2);
}
.card__title {
  font-family: var(--font-display);
  font-size: 1.25rem;
  font-weight: 600;
  color: var(--ink);
  margin: 0 0 var(--s-3) 0;
  line-height: 1.25;
}
.card__desc {
  color: var(--ink-soft);
  font-size: 0.95rem;
  line-height: 1.55;
  flex-grow: 1;
  margin-bottom: var(--s-4);
}
.card__meta {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding-top: var(--s-3);
  border-top: 1px solid var(--sand);
  font-size: 0.85rem;
  color: var(--ink-mute);
}
.card__link {
  color: var(--amber);
  font-weight: 600;
  display: inline-flex;
  align-items: center;
  gap: var(--s-2);
  transition: gap var(--dur) var(--ease-out-soft);
}
.card__link:hover { gap: var(--s-3); color: var(--claret); }

/* Difficulty badges */
.badge {
  display: inline-block;
  padding: 2px 10px;
  border-radius: 999px;
  font-size: 0.72rem;
  font-weight: 600;
  letter-spacing: 0.04em;
  text-transform: uppercase;
}
.badge--beginner     { background: rgba(63, 94, 58, 0.15); color: var(--moss); }
.badge--intermediate { background: rgba(184, 101, 26, 0.15); color: var(--amber); }
.badge--advanced     { background: rgba(122, 31, 43, 0.15); color: var(--claret); }

/* ---------- Section headings ---------- */
.section-head {
  display: flex;
  flex-direction: column;
  gap: var(--s-3);
  margin-bottom: var(--s-6);
}
.section-head__eyebrow {
  font-size: 0.8rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--amber);
}
.section-head h2 { margin: 0; }
.section-head__lead {
  font-size: 1.05rem;
  color: var(--ink-soft);
  max-width: 60ch;
}

/* ---------- Article / content body ---------- */
.prose {
  font-size: 1.08rem;
  line-height: 1.75;
  color: var(--ink);
}
.prose h2 { margin-top: var(--s-7); margin-bottom: var(--s-4); padding-bottom: var(--s-2); border-bottom: 1px solid var(--sand); }
.prose h3 { margin-top: var(--s-6); margin-bottom: var(--s-3); color: var(--ink); }
.prose h4 { margin-top: var(--s-5); margin-bottom: var(--s-2); color: var(--amber); }
.prose p { margin-bottom: var(--s-4); }
.prose ul, .prose ol { margin: 0 0 var(--s-4) 0; padding-left: 1.4em; }
.prose li { margin-bottom: var(--s-2); }
.prose li::marker { color: var(--amber); }
.prose img { border-radius: var(--r-md); box-shadow: var(--shadow-md); }
.prose figure { margin: var(--s-5) 0; }
.prose figcaption { font-size: 0.88rem; color: var(--ink-mute); text-align: center; margin-top: var(--s-2); }
.prose table { width: 100%; border-collapse: collapse; margin: var(--s-5) 0; font-size: 0.95rem; }
.prose th, .prose td { padding: var(--s-3); text-align: left; border-bottom: 1px solid var(--sand); }
.prose th { background: var(--parchment); font-weight: 600; color: var(--ink); }

/* ---------- Breadcrumbs ---------- */
.breadcrumbs {
  font-size: 0.88rem;
  color: var(--ink-mute);
  margin-bottom: var(--s-5);
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: var(--s-2);
}
.breadcrumbs a { color: var(--ink-mute); }
.breadcrumbs a:hover { color: var(--amber); }
.breadcrumbs__sep { color: var(--sand); }

/* ---------- Tool UI ---------- */
.tool-frame {
  background: var(--parchment);
  border: 1px solid var(--sand);
  border-radius: var(--r-lg);
  padding: var(--s-6);
  box-shadow: var(--shadow-md);
  margin: var(--s-5) 0;
}
.tool-canvas {
  background: var(--ink);
  color: var(--cream);
  border-radius: var(--r-md);
  padding: var(--s-6);
  min-height: 320px;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: var(--s-4);
  position: relative;
  overflow: hidden;
}
.tool-status {
  font-size: 0.9rem;
  color: var(--sand-soft);
  text-align: center;
  min-height: 1.4em;
}
.tool-controls {
  display: flex;
  gap: var(--s-3);
  flex-wrap: wrap;
  justify-content: center;
  margin-top: var(--s-4);
}
.tool-stat {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 2px;
  padding: var(--s-3) var(--s-4);
  background: var(--parchment);
  border: 1px solid var(--sand);
  border-radius: var(--r-md);
  min-width: 90px;
}
.tool-stat__value { font-family: var(--font-display); font-size: 1.5rem; font-weight: 700; color: var(--ink); line-height: 1; }
.tool-stat__label { font-size: 0.75rem; color: var(--ink-mute); text-transform: uppercase; letter-spacing: 0.04em; }

/* Memory grid tiles */
.mem-grid { display: grid; gap: 8px; }
.mem-tile {
  width: 64px; height: 64px;
  background: var(--ink-soft);
  border-radius: var(--r-sm);
  cursor: pointer;
  transition: all var(--dur-fast) var(--ease-out-soft);
  border: 2px solid transparent;
}
.mem-tile:hover { background: var(--bronze); }
.mem-tile.active { background: var(--amber-lt); transform: scale(1.05); box-shadow: 0 0 20px var(--amber-glow); }
.mem-tile.correct { background: var(--moss-lt); }
.mem-tile.wrong { background: var(--claret-lt); animation: shake 0.4s; }

/* Sudoku */
.sudoku-grid { display: grid; grid-template-columns: repeat(9, 1fr); gap: 1px; background: var(--ink); border: 3px solid var(--ink); border-radius: var(--r-sm); }
.sudoku-grid-4 { grid-template-columns: repeat(4, 1fr); }
.sudoku-cell {
  width: 100%; aspect-ratio: 1;
  background: var(--cream);
  display: grid; place-items: center;
  font-family: var(--font-mono); font-size: 1.1rem; font-weight: 600;
  color: var(--ink);
  cursor: pointer;
  border: none;
  transition: background var(--dur-fast) var(--ease-out-soft);
}
.sudoku-cell:hover { background: var(--parchment-2); }
.sudoku-cell.given { background: var(--parchment); color: var(--ink); font-weight: 700; cursor: default; }
.sudoku-cell.selected { background: var(--amber-lt); color: var(--ink); }
.sudoku-cell.error { background: rgba(122,31,43,0.2); color: var(--claret); }
.sudoku-cell.border-r-thick { border-right: 2px solid var(--ink); }
.sudoku-cell.border-b-thick { border-bottom: 2px solid var(--ink); }

/* Stroop */
.stroop-word {
  font-family: var(--font-display); font-size: clamp(3rem, 8vw, 5rem);
  font-weight: 700;
  letter-spacing: -0.02em;
  user-select: none;
}

/* Reaction */
.reaction-area {
  width: 100%; min-height: 280px;
  display: grid; place-items: center;
  border-radius: var(--r-md);
  cursor: pointer;
  font-family: var(--font-display); font-size: 1.5rem; font-weight: 600;
  transition: background var(--dur-fast) var(--ease-out-soft);
  user-select: none;
}
.reaction-area.waiting { background: var(--claret); color: var(--cream); }
.reaction-area.ready   { background: var(--moss); color: var(--cream); }
.reaction-area.idle    { background: var(--ink-soft); color: var(--cream); }
.reaction-area.early   { background: var(--bronze); color: var(--cream); }

/* Tower of Hanoi pegs */
.hanoi-pegs { display: grid; grid-template-columns: repeat(3, 1fr); gap: var(--s-4); width: 100%; max-width: 480px; }
.hanoi-peg {
  background: var(--ink-soft); border-radius: var(--r-md);
  padding: var(--s-3); min-height: 240px;
  display: flex; flex-direction: column-reverse; align-items: center; gap: 4px;
  cursor: pointer; border: 2px solid transparent;
  position: relative;
  transition: all var(--dur-fast) var(--ease-out-soft);
}
.hanoi-peg.selected { border-color: var(--amber-lt); background: var(--bronze); }
.hanoi-peg::after {
  content: ''; position: absolute; bottom: 12px; left: 50%; transform: translateX(-50%);
  width: 6px; height: 80%; background: var(--ink);
}
.hanoi-disk {
  height: 22px; border-radius: 999px;
  box-shadow: var(--shadow-sm);
  position: relative; z-index: 1;
  transition: all var(--dur) var(--ease-out-soft);
}

/* Sliding puzzle */
.slide-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 6px; max-width: 360px; }
.slide-tile {
  aspect-ratio: 1;
  background: var(--amber);
  color: var(--cream);
  display: grid; place-items: center;
  font-family: var(--font-display); font-size: 1.8rem; font-weight: 700;
  border-radius: var(--r-md);
  cursor: pointer;
  transition: all var(--dur) var(--ease-out-soft);
  box-shadow: var(--shadow-sm);
}
.slide-tile:hover { background: var(--amber-lt); transform: scale(0.96); }
.slide-tile.empty { background: transparent; cursor: default; box-shadow: none; }

/* ---------- Forms ---------- */
.form-group { margin-bottom: var(--s-4); }
.form-label {
  display: block;
  font-weight: 600;
  font-size: 0.95rem;
  color: var(--ink);
  margin-bottom: var(--s-2);
}
.form-input, .form-textarea, .form-select {
  width: 100%;
  padding: var(--s-3) var(--s-4);
  font-family: var(--font-body);
  font-size: 1rem;
  color: var(--ink);
  background: var(--cream);
  border: 1.5px solid var(--sand);
  border-radius: var(--r-md);
  transition: border-color var(--dur-fast) var(--ease-out-soft), box-shadow var(--dur-fast) var(--ease-out-soft);
}
.form-input:focus, .form-textarea:focus, .form-select:focus {
  outline: none;
  border-color: var(--amber);
  box-shadow: 0 0 0 3px var(--amber-glow);
}
.form-textarea { min-height: 140px; resize: vertical; }

/* ---------- Cookie banner ---------- */
.cookie-banner {
  position: fixed;
  bottom: 0; left: 0; right: 0;
  background: var(--ink);
  color: var(--cream);
  padding: var(--s-4) var(--s-5);
  z-index: 100;
  transform: translateY(100%);
  transition: transform var(--dur-slow) var(--ease-out-soft);
  box-shadow: 0 -8px 32px rgba(14, 27, 44, 0.3);
}
.cookie-banner.visible { transform: translateY(0); }
.cookie-banner__inner {
  max-width: 1200px; margin: 0 auto;
  display: flex; align-items: center; justify-content: space-between; gap: var(--s-4); flex-wrap: wrap;
}
.cookie-banner p { margin: 0; color: var(--sand-soft); font-size: 0.92rem; max-width: 70ch; }
.cookie-banner__actions { display: flex; gap: var(--s-3); }
.cookie-banner .btn-primary { background: var(--amber); }
.cookie-banner .btn-secondary { color: var(--cream); border-color: var(--cream); }
.cookie-banner .btn-secondary:hover { background: var(--cream); color: var(--ink); }

/* ---------- Footer ---------- */
.site-footer {
  background: var(--ink);
  color: var(--sand-soft);
  padding: var(--s-8) 0 var(--s-5);
  margin-top: var(--s-9);
}
.site-footer a { color: var(--sand-soft); }
.site-footer a:hover { color: var(--amber-lt); }
.site-footer__grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: var(--s-6);
  margin-bottom: var(--s-6);
}
.site-footer__col h4 {
  color: var(--cream); font-family: var(--font-body); font-size: 0.8rem;
  letter-spacing: 0.1em; text-transform: uppercase; margin-bottom: var(--s-3);
}
.site-footer__col ul { list-style: none; padding: 0; margin: 0; }
.site-footer__col li { margin-bottom: var(--s-2); font-size: 0.92rem; }
.site-footer__brand { display: flex; align-items: center; gap: var(--s-3); margin-bottom: var(--s-3); }
.site-footer__brand .brand__mark { background: var(--amber); color: var(--ink); }
.site-footer__brand-name { font-family: var(--font-display); font-size: 1.3rem; font-weight: 700; color: var(--cream); }
.site-footer__bottom {
  padding-top: var(--s-5); border-top: 1px solid var(--ink-soft);
  display: flex; justify-content: space-between; align-items: center; flex-wrap: wrap; gap: var(--s-3);
  font-size: 0.85rem; color: var(--ink-mute);
}

/* ---------- Animations ---------- */
@keyframes pulse-soft {
  0%, 100% { box-shadow: 0 0 0 4px var(--amber-glow); }
  50%      { box-shadow: 0 0 0 8px rgba(184, 101, 26, 0.08); }
}
@keyframes shake {
  0%, 100% { transform: translateX(0); }
  25% { transform: translateX(-6px); }
  75% { transform: translateX(6px); }
}
@keyframes fade-up {
  from { opacity: 0; transform: translateY(16px); }
  to   { opacity: 1; transform: translateY(0); }
}
@keyframes float {
  0%, 100% { transform: translateY(0); }
  50%      { transform: translateY(-8px); }
}
@keyframes shimmer {
  0%   { background-position: -200% 0; }
  100% { background-position: 200% 0; }
}

/* Scroll-reveal — set .reveal on any element you want to animate in */
.reveal {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity var(--dur-slow) var(--ease-out-soft), transform var(--dur-slow) var(--ease-out-soft);
}
.reveal.is-visible {
  opacity: 1;
  transform: translateY(0);
}

/* Staggered children */
.stagger > * { opacity: 0; transform: translateY(20px); }
.stagger.is-visible > * {
  opacity: 1; transform: translateY(0);
  transition: opacity var(--dur) var(--ease-out-soft), transform var(--dur) var(--ease-out-soft);
}
.stagger.is-visible > *:nth-child(1) { transition-delay: 60ms; }
.stagger.is-visible > *:nth-child(2) { transition-delay: 120ms; }
.stagger.is-visible > *:nth-child(3) { transition-delay: 180ms; }
.stagger.is-visible > *:nth-child(4) { transition-delay: 240ms; }
.stagger.is-visible > *:nth-child(5) { transition-delay: 300ms; }
.stagger.is-visible > *:nth-child(6) { transition-delay: 360ms; }
.stagger.is-visible > *:nth-child(7) { transition-delay: 420ms; }
.stagger.is-visible > *:nth-child(8) { transition-delay: 480ms; }

/* ---------- Decorative ---------- */
.divider-ornament {
  display: flex; align-items: center; justify-content: center; gap: var(--s-3);
  margin: var(--s-7) 0; color: var(--sand);
}
.divider-ornament::before, .divider-ornament::after {
  content: ''; flex: 1; height: 1px;
  background: linear-gradient(to right, transparent, var(--sand), transparent);
}
.divider-ornament span { font-size: 1.2rem; color: var(--amber); }

/* Callout boxes */
.callout {
  padding: var(--s-4) var(--s-5);
  border-radius: var(--r-md);
  margin: var(--s-5) 0;
  border-left: 4px solid;
  font-size: 0.97rem;
}
.callout--info    { background: var(--parchment); border-color: var(--amber); }
.callout--warning { background: rgba(122,31,43,0.05); border-color: var(--claret); }
.callout--success { background: rgba(63,94,58,0.06); border-color: var(--moss); }
.callout__title { font-weight: 700; margin-bottom: var(--s-2); display: block; }

/* ---------- Search ---------- */
.search-box {
  display: flex; gap: var(--s-2); max-width: 540px; margin: 0 auto;
}
.search-box .form-input { flex: 1; }

/* ---------- Responsive ---------- */
@media (max-width: 1024px) {
  .site-footer__grid { grid-template-columns: 1fr 1fr; }
  .hero__stats { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 768px) {
  .nav-primary { display: none; position: absolute; top: 100%; left: 0; right: 0;
    background: var(--cream); border-bottom: 1px solid var(--sand); flex-direction: column; padding: var(--s-3); gap: 0; }
  .nav-primary.open { display: flex; }
  .nav-primary a { padding: var(--s-3); border-radius: 0; border-bottom: 1px solid var(--sand); }
  .nav-primary a:last-child { border-bottom: none; }
  .nav-toggle { display: inline-flex; align-items: center; gap: var(--s-2);
    padding: var(--s-2) var(--s-3); background: var(--ink); color: var(--cream); border-radius: var(--r-md);
    border: none; cursor: pointer; font-weight: 600; font-size: 0.9rem; }
  .section { padding: var(--s-6) 0; }
  .hero { padding: var(--s-7) 0 var(--s-6); }
  .tool-frame { padding: var(--s-4); }
  .tool-canvas { padding: var(--s-4); min-height: 260px; }
  .mem-tile { width: 48px; height: 48px; }
  .sudoku-cell { font-size: 0.9rem; }
  .site-footer__grid { grid-template-columns: 1fr; }
}
@media (max-width: 375px) {
  body { font-size: 16px; }
  .container { padding: 0 var(--s-4); }
  .hero__cta { flex-direction: column; align-items: stretch; }
  .btn { justify-content: center; }
  .hero__stats { grid-template-columns: 1fr 1fr; gap: var(--s-3); }
}

/* Reduced motion */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
  .reveal { opacity: 1; transform: none; }
}

/* Print */
@media print {
  .site-header, .site-footer, .cookie-banner, .tool-canvas, .nav-toggle { display: none; }
  body { background: white; color: black; }
}