/* ============================================================
   KINDLING · UNIFIED HUB — shared design system
   The landing page bridges three editions:
     · Sprouts  (8–14, the original Kindling — warm + playful)
     · Middle   (10–14, project-based)
     · Builders (15+, production-grade)
   The hub uses a balanced "paper & ink" palette that sits
   between Sprouts' brightness and Builders' restraint.
   ============================================================ */

@import url('https://fonts.googleapis.com/css2?family=Fraunces:opsz,wght@9..144,400;9..144,500;9..144,600;9..144,700;9..144,800&family=Inter:wght@400;500;600;700;800&family=Caveat:wght@500;600;700&family=JetBrains+Mono:wght@400;500;600&display=swap');

:root {
  /* ---------- Paper & Ink ---------- */
  --paper:        #FAF4DF;
  --paper-deep:   #F2E9C5;
  --paper-warm:   #FFFCF0;
  --paper-glass:  rgba(255, 252, 240, 0.82);
  --ink:          #1F2230;
  --ink-soft:     #4D5266;
  --ink-faint:    #8A8FA3;
  --line:         rgba(31, 34, 48, 0.10);
  --line-soft:    rgba(31, 34, 48, 0.05);

  /* ---------- Trait colors (balanced palette) ---------- */
  --passion:      #DC5C44;
  --passion-deep: #B43D2C;
  --passion-soft: #FBDED7;
  --empathy:      #5598AD;
  --empathy-deep: #3B7B92;
  --empathy-soft: #DBEBF1;
  --taste:        #D69830;
  --taste-deep:   #A87018;
  --taste-soft:   #F8E7C0;

  /* ---------- Level accents (each card gets its own hint) ---------- */
  --sprouts:      #6F9559;     /* leaf — youngest, growing */
  --sprouts-deep: #527040;
  --sprouts-soft: #DAE8CE;
  --middle:       #D69830;     /* taste gold — middle ground */
  --middle-deep:  #A87018;
  --middle-soft:  #F8E7C0;
  --builders:     #4A8B9E;     /* slate teal — most grown */
  --builders-deep:#356D80;
  --builders-soft:#DDEAEF;

  /* ---------- Fonts ---------- */
  --font-display: 'Fraunces', 'Cormorant Garamond', Georgia, serif;
  --font-body:    'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --font-hand:    'Caveat', 'Bradley Hand', cursive;
  --font-mono:    'JetBrains Mono', 'SF Mono', Menlo, monospace;

  /* ---------- Scale ---------- */
  --size-display: clamp(2.6rem, 6.4vw, 5rem);
  --size-h1:      clamp(2rem, 4.4vw, 3.2rem);
  --size-h2:      clamp(1.6rem, 3vw, 2.2rem);
  --size-h3:      clamp(1.2rem, 1.9vw, 1.45rem);
  --size-body:    1.0625rem;
  --size-lead:    1.225rem;
  --size-small:   0.95rem;
  --size-caption: 0.85rem;

  /* ---------- Radii / shadows ---------- */
  --radius-sm:    10px;
  --radius:       16px;
  --radius-lg:    24px;
  --radius-pill:  999px;
  --shadow-soft:  0 6px 24px -10px rgba(31, 34, 48, 0.14);
  --shadow-lift:  0 18px 50px -22px rgba(31, 34, 48, 0.22);
  --stamp-ink:    2px 2px 0 var(--ink);
  --stamp-ink-lg: 4px 4px 0 var(--ink);

  /* ---------- Layout ---------- */
  --container:        min(1140px, 92vw);
  --container-narrow: min(720px, 92vw);
  --container-wide:   min(1320px, 94vw);
}

/* ============================================================ Base */
*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; }
body {
  margin: 0;
  font-family: var(--font-body);
  font-size: var(--size-body);
  line-height: 1.65;
  color: var(--ink);
  background: var(--paper);
  background-image:
    radial-gradient(circle at 8% 92%, rgba(85, 152, 173, 0.08) 0%, transparent 55%),
    radial-gradient(circle at 92% 8%, rgba(214, 152, 48, 0.10) 0%, transparent 55%),
    radial-gradient(circle at 50% 40%, rgba(220, 92, 68, 0.05) 0%, transparent 70%),
    radial-gradient(rgba(31, 34, 48, 0.045) 1px, transparent 1px);
  background-size: 100% 100%, 100% 100%, 100% 100%, 28px 28px;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}
::selection { background: var(--taste-soft); color: var(--ink); }
::-webkit-scrollbar { width: 8px; height: 8px; }
::-webkit-scrollbar-thumb { background: rgba(31, 34, 48, 0.18); border-radius: 4px; }
a { color: inherit; text-decoration: none; }
img { max-width: 100%; display: block; }
button { font: inherit; cursor: pointer; }

/* ============================================================ Containers */
.container        { width: var(--container);        margin-inline: auto; }
.container-narrow { width: var(--container-narrow); margin-inline: auto; }
.container-wide   { width: var(--container-wide);   margin-inline: auto; }

/* ============================================================ Top nav */
.nav {
  position: sticky; top: 0; z-index: 50;
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  background: var(--paper-glass);
  border-bottom: 1px solid var(--line);
}
.nav-inner {
  width: var(--container-wide);
  margin-inline: auto;
  display: flex; align-items: center; justify-content: space-between;
  padding: 14px 0;
}
.brand {
  display: flex; align-items: center; gap: 10px;
  font-family: var(--font-display);
  font-weight: 600; font-size: 1.25rem;
  letter-spacing: -0.01em;
  color: var(--ink);
}
.brand .mark {
  width: 22px; height: 22px; border-radius: 50%;
  background: linear-gradient(135deg, var(--passion), var(--taste));
  border: 2px solid var(--ink);
}
.brand .edition {
  font-family: var(--font-body);
  font-size: 0.72rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--ink-soft);
  font-weight: 700;
  margin-left: 6px;
  padding: 2px 8px;
  border-radius: var(--radius-pill);
  background: var(--paper-warm);
  border: 1px solid var(--line);
}
.nav-links { display: flex; gap: 26px; align-items: center; }
.nav-links a {
  font-size: 0.95rem;
  color: var(--ink-soft);
  font-weight: 500;
  transition: color 0.15s;
}
.nav-links a:hover { color: var(--ink); }
.nav-links a.cta {
  padding: 8px 16px;
  background: var(--ink);
  color: var(--paper-warm);
  border-radius: var(--radius-pill);
  font-weight: 600;
  font-size: 0.88rem;
}
.nav-links a.cta:hover { background: var(--passion-deep); color: var(--paper-warm); }
@media (max-width: 720px) { .nav-links a:not(.cta) { display: none; } }

/* ============================================================ Hero */
.hero {
  padding: 5.5rem 0 3.5rem;
  text-align: center;
  position: relative;
}
.hero .eyebrow {
  display: inline-flex; align-items: center; gap: 12px;
  font-family: var(--font-body);
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.20em;
  text-transform: uppercase;
  color: var(--ink-soft);
  margin-bottom: 1.4rem;
}
.hero .eyebrow .pill {
  padding: 4px 11px;
  border-radius: var(--radius-pill);
  background: var(--paper-warm);
  border: 1px solid var(--line);
  font-size: 0.72rem;
  color: var(--ink);
  letter-spacing: 0.10em;
}
.hero h1 {
  font-family: var(--font-display);
  font-size: var(--size-display);
  line-height: 1.02;
  font-weight: 700;
  letter-spacing: -0.025em;
  margin: 0 auto 1.4rem;
  max-width: 18ch;
  color: var(--ink);
}
.hero h1 em {
  font-style: italic;
  color: var(--passion);
  position: relative;
}
.hero h1 em::after {
  content: "";
  position: absolute;
  left: -3px; right: -3px; bottom: 4px;
  height: 14px;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 200 14' preserveAspectRatio='none'%3E%3Cpath d='M3 8 Q30 2, 55 8 T108 8 T160 8 T197 6' stroke='%23D69830' stroke-width='6' fill='none' stroke-linecap='round' opacity='0.55'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-size: 100% 100%;
  z-index: -1;
}
.hero .sub {
  font-size: var(--size-lead);
  color: var(--ink-soft);
  max-width: 56ch;
  margin: 0 auto 2.2rem;
  line-height: 1.6;
}

/* ============================================================ Section heads */
.section { padding: 5rem 0; border-top: 1px solid var(--line); }
.section.alt { background: rgba(255, 252, 240, 0.45); }
.section-head { text-align: center; margin-bottom: 3rem; }
.section-head .eyebrow {
  display: inline-block;
  font-family: var(--font-body);
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.20em;
  text-transform: uppercase;
  color: var(--ink-soft);
  margin-bottom: 0.8rem;
}
.section-head h2 {
  font-family: var(--font-display);
  font-size: var(--size-h1);
  line-height: 1.1;
  margin: 0 0 0.8rem;
  font-weight: 700;
  letter-spacing: -0.02em;
}
.section-head h2 em {
  font-style: italic;
  color: var(--passion);
}
.section-head .sub {
  font-size: 1.15rem;
  color: var(--ink-soft);
  max-width: 56ch;
  margin: 0 auto;
  line-height: 1.6;
}

/* ============================================================ Buttons */
.btn, .btn-ghost {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.95rem 1.6rem;
  border-radius: var(--radius-pill);
  font-family: var(--font-body);
  font-weight: 700;
  font-size: 0.98rem;
  text-decoration: none;
  transition: transform 0.15s ease, box-shadow 0.15s ease, background 0.15s;
  border: 2px solid var(--ink);
}
.btn {
  background: var(--ink);
  color: var(--paper-warm);
  box-shadow: var(--stamp-ink);
}
.btn:hover {
  transform: translate(-2px, -2px);
  box-shadow: 4px 4px 0 var(--ink);
}
.btn-ghost {
  background: transparent;
  color: var(--ink);
}
.btn-ghost:hover {
  background: var(--paper-warm);
  box-shadow: var(--stamp-ink);
  transform: translate(-2px, -2px);
}

/* ============================================================ Footer */
.site-footer {
  padding: 3.5rem 0 2.5rem;
  border-top: 1px solid var(--line);
  background: var(--paper-deep);
}
.site-footer .row {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 24px;
  flex-wrap: wrap;
  font-size: 0.92rem;
  color: var(--ink-soft);
}
.site-footer p { margin: 0.4rem 0; }
.site-footer .brand { font-size: 1.1rem; }
.site-footer a { color: var(--ink); border-bottom: 1px solid var(--taste); }
.site-footer a:hover { color: var(--passion-deep); }

/* ============================================================ Cross-edition mini-banner (used in level pages) */
.hub-banner {
  background: var(--ink);
  color: var(--paper-warm);
  font-family: var(--font-body);
  font-size: 0.85rem;
  text-align: center;
  padding: 8px 16px;
  letter-spacing: 0.02em;
}
.hub-banner a {
  color: var(--paper-warm);
  border-bottom: 1px solid var(--taste);
  font-weight: 600;
  margin-left: 4px;
}
.hub-banner a:hover { color: var(--taste); }