/* ═══════════════════════════════════════════════
   shared.css — snapDiff demo design system
   Mirrors snapdom.dev "Mr SnapDOM" retro look.
   ═══════════════════════════════════════════════ */

:root {
  --bg: #F5EFE3;
  --surface: #FFFCF4;
  --surface-elev: #FBF3DF;
  --border: #0F1E4D;
  --border-soft: rgba(15,30,77,0.18);
  --text: #0F1E4D;
  --text-muted: #5A6478;
  --accent: #2D5BFF;
  --accent-hover: #1E40FF;
  --accent-soft: rgba(45,91,255,0.10);
  --amber: #F5A623;
  --amber-ink: #8A4F00;
  --amber-soft: rgba(245,166,35,0.18);
  --rose: #E63946;
  --rose-soft: rgba(230,57,70,0.12);
  --green: #1E9F6E;
  --green-soft: rgba(30,159,110,0.14);
  --grid-color: rgba(15,30,77,0.05);
  --halftone-color: #0F1E4D;
  --halftone-size: 5px;
  --halftone-dot: 1.3px;
  --halftone-offset: 8px;
  --shadow: 3px 3px 0 #0F1E4D;
  --shadow-hover: 5px 5px 0 #0F1E4D;
  --shadow-lg: 6px 6px 0 #0F1E4D;
  --radius: 10px;
  --radius-sm: 8px;
  --font-display: 'Unbounded', sans-serif;
  --font-body: 'DM Sans', sans-serif;
  --font-mono: 'JetBrains Mono', monospace;
  --font-hand: 'Mansalva', cursive;
}

* { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  padding: 0 0 100px;
  font-family: var(--font-body);
  background: var(--bg);
  background-image:
    repeating-linear-gradient(0deg, var(--grid-color) 0px, var(--grid-color) 1px, transparent 1px, transparent 60px),
    repeating-linear-gradient(90deg, var(--grid-color) 0px, var(--grid-color) 1px, transparent 1px, transparent 60px);
  background-attachment: fixed;
  color: var(--text);
  -webkit-font-smoothing: antialiased;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  align-items: center;
}

a { color: var(--accent); text-decoration: none; }

/* ── Halftone newsprint shadow ── */
.panel,
.card-halftone {
  position: relative;
}
.panel::after,
.card-halftone::after {
  content: '';
  position: absolute;
  inset: 0;
  background-image: radial-gradient(circle, var(--halftone-color) var(--halftone-dot), transparent calc(var(--halftone-dot) + 0.4px));
  background-size: var(--halftone-size) var(--halftone-size);
  transform: translate(var(--halftone-offset), var(--halftone-offset));
  clip-path: polygon(
    calc(100% - var(--halftone-offset)) 0,
    100% 0,
    100% 100%,
    0 100%,
    0 calc(100% - var(--halftone-offset)),
    calc(100% - var(--halftone-offset)) calc(100% - var(--halftone-offset))
  );
  pointer-events: none;
  transition: transform .15s ease;
}
.card-halftone:hover::after {
  transform: translate(calc(var(--halftone-offset) + 3px), calc(var(--halftone-offset) + 3px));
}

/* ── GitHub badge ── */
.github-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  text-decoration: none;
  color: var(--text);
  font-weight: 700;
  font-size: 13px;
  background: var(--surface);
  padding: 8px 16px;
  border-radius: 8px;
  border: 2px solid var(--border);
  box-shadow: var(--shadow);
  font-family: var(--font-mono);
  transition: transform 0.15s, box-shadow 0.15s;
}
.github-badge:hover { transform: translate(-1px, -1px); box-shadow: var(--shadow-hover); }
.github-badge:active { transform: translate(2px, 2px); box-shadow: 1px 1px 0 var(--border); }
.github-stars {
  display: inline-flex; align-items: center; gap: 4px;
  background: var(--amber-soft); padding: 2px 8px; border-radius: 6px;
  font-weight: 800; color: var(--amber-ink); font-size: 12px;
}
.github-stars i { color: var(--amber-ink); font-size: 11px; }

/* ── Hero ── */
.hero-block {
  width: 100%;
  max-width: 720px;
  text-align: center;
  padding: 48px 24px 16px;
}
.hero-block.compact { padding: 36px 24px 8px; }
.hero-block .github-badge { margin-bottom: 18px; }
.hero-mascot {
  display: block;
  margin: 6px auto 10px;
  width: clamp(120px, 18vw, 160px);
  height: auto;
  filter: drop-shadow(3px 3px 0 var(--border));
}
.hero-block.compact .hero-mascot {
  width: clamp(80px, 12vw, 110px);
}
.hero-block h1 {
  font-family: var(--font-display);
  font-weight: 900;
  font-size: clamp(2.2rem, 6vw, 3.2rem);
  letter-spacing: -2px;
  line-height: 1.05;
  margin: 0 0 0.45rem;
}
.hero-block.compact h1 {
  font-size: clamp(1.6rem, 4vw, 2.2rem);
  letter-spacing: -1px;
}
.hero-block h1 .accent { color: var(--accent); }
.hero-block h1 .accent-ink { color: var(--text); }
.hero-block .tagline {
  font-size: 1rem;
  color: var(--text-muted);
  margin: 0 auto;
  max-width: 560px;
  line-height: 1.6;
}
.hero-block .tagline em {
  font-style: normal;
  color: var(--text);
  font-family: var(--font-hand);
  font-size: 1.2em;
  font-weight: 400;
}
.hero-block .tagline code {
  background: var(--accent-soft);
  color: var(--accent);
  padding: 1px 6px;
  border-radius: 4px;
  font-family: var(--font-mono);
  font-size: 0.85em;
  font-weight: 600;
}

/* ── Section label ── */
.section-label {
  width: 100%;
  max-width: 720px;
  padding: 0 24px;
  margin: 24px 0 14px;
  font-family: var(--font-mono);
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 2.5px;
  color: var(--accent);
  font-weight: 700;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 12px;
}
.section-label::before,
.section-label::after {
  content: '';
  flex: 1;
  height: 2px;
  background: var(--border);
  opacity: 0.25;
  border-radius: 1px;
}

/* ── Generic page main ── */
.page-main {
  width: 100%;
  max-width: 720px;
  padding: 0 24px;
}

/* ── Panel ── */
.panel {
  background: var(--surface);
  border: 2px solid var(--border);
  border-radius: var(--radius);
  padding: 22px;
}
.panel + .panel { margin-top: 20px; }

/* ── Buttons ── */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 10px 18px;
  border-radius: 8px;
  font-size: 13px;
  font-weight: 700;
  font-family: var(--font-mono);
  text-decoration: none;
  cursor: pointer;
  border: 2px solid var(--border);
  transition: transform 0.15s, box-shadow 0.15s, background 0.15s, color 0.15s;
  box-shadow: var(--shadow);
  letter-spacing: 0.3px;
  background: var(--surface);
  color: var(--text);
}
.btn:hover { transform: translate(-1px, -1px); box-shadow: var(--shadow-hover); }
.btn:active { transform: translate(2px, 2px); box-shadow: 1px 1px 0 var(--border); }
.btn:disabled { opacity: 0.5; cursor: not-allowed; transform: none; box-shadow: var(--shadow); }
.btn-primary { background: var(--accent); color: #FFFCF4; }
.btn-primary:hover { background: var(--accent-hover); }
.btn-ink { background: var(--border); color: #FFFCF4; }
.btn-danger { background: var(--rose); color: #FFFCF4; }

/* Inline labels (range / checkbox) */
.field {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 12px;
  border: 2px solid var(--border);
  border-radius: 8px;
  background: var(--surface);
  font-size: 12px;
  font-family: var(--font-mono);
  color: var(--text);
  font-weight: 600;
  letter-spacing: 0.2px;
  box-shadow: var(--shadow);
}
.field input[type="range"] { accent-color: var(--accent); }

/* Inline code in body copy */
code {
  background: var(--amber-soft);
  color: var(--amber-ink);
  padding: 1px 6px;
  border-radius: 4px;
  font-family: var(--font-mono);
  font-size: 0.85em;
  font-weight: 600;
}

/* ── Page nav (bottom floating) ── */
.page-nav {
  position: fixed;
  bottom: 16px;
  left: 50%;
  transform: translateX(-50%);
  z-index: 9998;
  display: flex;
  flex-wrap: nowrap;
  gap: 2px;
  background: var(--surface);
  border: 2px solid var(--border);
  border-radius: 10px;
  padding: 4px;
  box-shadow: 4px 4px 0 var(--border);
  font-family: var(--font-mono);
  max-width: calc(100vw - 24px);
  overflow-x: auto;
  scrollbar-width: none;
}
.page-nav::-webkit-scrollbar { display: none; }
.page-nav a {
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--text-muted);
  text-decoration: none;
  padding: 6px 14px;
  border-radius: 6px;
  transition: background 0.15s, color 0.15s;
  font-weight: 700;
  letter-spacing: 0.3px;
  white-space: nowrap;
  flex: 0 0 auto;
}
.page-nav a:hover { color: var(--accent); background: var(--accent-soft); }
.page-nav a.current { color: #FFFCF4; background: var(--accent); }

/* ── Sticker pills (status / tier) ── */
.sticker {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-family: var(--font-mono);
  font-size: 10px;
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: 1.3px;
  padding: 4px 10px;
  border-radius: 999px;
  border: 1.5px solid var(--border-soft);
  background: var(--accent-soft);
  color: var(--accent);
}
.sticker.pass  { background: var(--green-soft);  color: var(--green); }
.sticker.fail  { background: var(--rose-soft);   color: var(--rose); }
.sticker.new   { background: var(--amber-soft);  color: var(--amber-ink); }
.sticker.error { background: var(--amber-soft);  color: var(--amber-ink); }