/* ════════════════════════════════════════════════════════════════
   SymposiON — main-upgrade.css   (v5.1 polish layer)
   Drop-in upgrade. Load AFTER main.css:

     <link rel="stylesheet" href="css/main.css"/>
     <link rel="stylesheet" href="css/main-upgrade.css"/>

   Non-destructive: only overrides. Remove the <link> to revert.
   ──────────────────────────────────────────────────────────────── */


/* ── 1. Token tune-up ──────────────────────────────────────────
   Warmer paper, deeper ink, a touch more chroma on sage/terra.
   Adds elevation tokens + editorial rhythm tokens.            */
:root {
  /* paper — warmer, more depth between shades */
  --alabaster:  #F4EFE6;
  --linen:      #E7DFCD;
  --parchment:  #D2C7B0;
  --warm-white: #FBF7EE;

  /* ink — deeper, more confident */
  --espresso:   #1E170D;
  --charcoal:   #322819;
  --stone:      #7A6B55;
  --fog:        #A89880;

  /* sage — slightly richer */
  --sage:       #607E48;
  --sage-dark:  #3F5630;
  --sage-light: #88A472;
  --sage-mist:  #E6EDDE;
  --sage-line:  rgba(96,126,72,0.28);

  /* elevation (newly added) */
  --shadow-1: 0 1px 0 rgba(34,27,16,0.04), 0 1px 2px rgba(34,27,16,0.05);
  --shadow-2: 0 2px 4px rgba(34,27,16,0.04), 0 8px 24px rgba(34,27,16,0.07);
  --shadow-3: 0 4px 8px rgba(34,27,16,0.05), 0 20px 50px rgba(34,27,16,0.10);
  --shadow-press: inset 0 1px 2px rgba(34,27,16,0.10);

  /* editorial rhythm */
  --rule:        1px solid var(--parchment);
  --rule-soft:   1px solid var(--linen);
  --ornament:    color-mix(in oklab, var(--sage) 70%, var(--parchment));

  /* motion */
  --ease-out:    cubic-bezier(0.16, 1, 0.3, 1);
  --ease-in-out: cubic-bezier(0.65, 0, 0.35, 1);
}

/* ── 2. Body: subtle paper texture + better default rhythm ───── */
body {
  background:
    radial-gradient(1200px 600px at 90% -10%, rgba(96,126,72,0.05), transparent 60%),
    radial-gradient(1000px 500px at -10% 110%, rgba(210,199,176,0.30), transparent 60%),
    var(--alabaster);
  background-attachment: fixed;
  font-feature-settings: "ss01","ss02","cv11","kern","liga";
}
/* paper grain — invisible on slow GPUs, kept very light */
body::before {
  content: '';
  position: fixed; inset: 0; pointer-events: none; z-index: 0;
  background-image: url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' width='160' height='160'><filter id='n'><feTurbulence type='fractalNoise' baseFrequency='0.85' numOctaves='2' stitchTiles='stitch'/><feColorMatrix values='0 0 0 0 0.12  0 0 0 0 0.10  0 0 0 0 0.07  0 0 0 0.05 0'/></filter><rect width='100%25' height='100%25' filter='url(%23n)'/></svg>");
  mix-blend-mode: multiply; opacity: 0.5;
}
/* page content stays above grain */
.page, .nav, .hero, .content, .browse-body, .page-header,
.subject-hero, .game-hero, .grid-wrap, .games-content,
.showcase-section, .stats-strip, footer { position: relative; z-index: 1; }

/* ── 3. Type — optical sizing + sharper hierarchy ───────────── */
h1, h2, h3, .hero h1, .section-head h2, .browse-header h1, .page-header h1 {
  font-family: 'Cormorant Garamond', 'Noto Serif', Georgia, serif;
  font-optical-sizing: auto;
  font-feature-settings: "kern","liga","dlig","onum";
  text-wrap: balance;
}
p, .hero p { text-wrap: pretty; }

/* drop-letter on browse / section heads when starting capital */
.browse-header h1::first-letter,
.page-header h1::first-letter {
  font-style: italic;
  color: var(--sage);
}

/* ── 4. NAV — translucent → solid on scroll, refined buttons ─ */
.nav {
  background: color-mix(in oklab, var(--alabaster) 78%, transparent);
  backdrop-filter: blur(24px) saturate(170%);
  -webkit-backdrop-filter: blur(24px) saturate(170%);
  border-bottom-color: color-mix(in oklab, var(--parchment) 60%, transparent);
  height: 64px;
  transition: background .4s var(--ease-out), border-color .4s var(--ease-out), box-shadow .4s var(--ease-out);
}
.nav.scrolled,
body[data-scrolled="1"] .nav {
  background: color-mix(in oklab, var(--alabaster) 96%, transparent);
  box-shadow: 0 1px 0 rgba(34,27,16,0.04), 0 8px 24px rgba(34,27,16,0.04);
}
.logo {
  font-weight: 500; letter-spacing: -0.3px; font-size: 22px;
}
.logo span { transition: color .3s var(--ease-out); }
.logo:hover span { color: var(--sage-dark); }

.nav-btn {
  border-radius: 2px;
  border-color: color-mix(in oklab, var(--parchment) 80%, transparent);
  position: relative; overflow: hidden;
  transition: color .35s var(--ease-out), border-color .35s var(--ease-out),
              background .35s var(--ease-out), transform .25s var(--ease-out);
}
.nav-btn::after {
  content: ''; position: absolute; inset: 0;
  background: linear-gradient(120deg, transparent 30%, rgba(255,255,255,0.4) 50%, transparent 70%);
  transform: translateX(-100%); transition: transform .6s var(--ease-out);
}
.nav-btn:hover { transform: translateY(-1px); }
.nav-btn:hover::after { transform: translateX(100%); }
.nav-btn.primary { box-shadow: var(--shadow-1); }
.nav-btn.primary:hover {
  background: var(--sage-dark); border-color: var(--sage-dark);
  box-shadow: var(--shadow-2);
}
.lang-toggle { border-radius: 2px; }
.lang-opt    { transition: all .3s var(--ease-out); }

/* ── 5. HERO — richer atmosphere, refined tag, italic accent ── */
.hero::before {
  background:
    radial-gradient(ellipse 100% 70% at 50% -15%,
      rgba(96,126,72,0.13) 0%, transparent 65%),
    radial-gradient(ellipse 80% 40% at 50% 100%,
      rgba(210,199,176,0.45) 0%, transparent 70%),
    radial-gradient(ellipse 40% 30% at 20% 40%,
      rgba(232,132,90,0.05) 0%, transparent 60%);
}
.hero-tag {
  font-size: 10.5px; letter-spacing: 4px;
  color: var(--sage-dark);
}
.hero-tag::before,
.hero-tag::after {
  width: 44px; background: var(--ornament);
}
.hero h1 {
  font-weight: 300;
  letter-spacing: -2.5px;
  line-height: 1.00;
}
.hero h1 em {
  position: relative;
  background: linear-gradient(180deg, transparent 70%, color-mix(in oklab, var(--sage-mist) 80%, transparent) 70%);
  padding: 0 0.05em;
}
.hero p {
  font-size: 16px; line-height: 1.85;
  color: color-mix(in oklab, var(--stone) 92%, var(--espresso));
}

/* ── 6. CTA buttons — confident press + sage hover wash ─────── */
.cta-primary, .cta-ghost { border-radius: 2px; }
.cta-primary {
  background: var(--espresso); border-color: var(--espresso);
  box-shadow: var(--shadow-2);
  letter-spacing: 1.6px; text-transform: uppercase; font-size: 11.5px;
  padding: 16px 42px;
  position: relative; overflow: hidden;
}
.cta-primary::before {
  content: ''; position: absolute; inset: 0;
  background: linear-gradient(135deg, var(--sage) 0%, var(--sage-dark) 100%);
  opacity: 0; transition: opacity .45s var(--ease-out);
}
.cta-primary > * { position: relative; z-index: 1; }
.cta-primary:hover {
  border-color: var(--sage-dark);
  box-shadow: var(--shadow-3);
  transform: translateY(-2px);
}
.cta-primary:hover::before { opacity: 1; }
.cta-primary:active {
  transform: translateY(0); box-shadow: var(--shadow-press);
}
.cta-ghost {
  letter-spacing: 1.4px; text-transform: uppercase; font-size: 11.5px;
  padding: 16px 30px;
}
.cta-ghost:hover {
  background: color-mix(in oklab, var(--warm-white) 80%, transparent);
  box-shadow: var(--shadow-1);
}

/* ── 7. Grade selector — softer divisions, smoother lift ────── */
.grade-row {
  border-color: var(--parchment);
  background: color-mix(in oklab, var(--warm-white) 60%, transparent);
  backdrop-filter: blur(8px);
}
.grade-btn:hover:not(.locked) {
  background: var(--warm-white);
  box-shadow:
    0 22px 60px rgba(34, 27, 16, 0.12),
    0 6px 14px rgba(96,126,72,0.10);
  transform: scale(1.10);
}
.grade-btn.active {
  background: var(--espresso); color: var(--alabaster);
  box-shadow: inset 0 -2px 0 var(--sage);
}

/* ── 8. Dropdowns — paper card w/ deeper shadow ─────────────── */
.dropdown, .bc-dropdown {
  background: var(--warm-white);
  border-color: color-mix(in oklab, var(--parchment) 90%, transparent);
  border-top-color: var(--sage);
  box-shadow: var(--shadow-3);
  border-radius: 0;
  min-width: 230px;
}
.dd-item, .bc-dd-item {
  letter-spacing: 0.4px;
  position: relative;
  padding: 14px 22px;
}
.dd-item::before, .bc-dd-item::before {
  content: ''; position: absolute; left: 10px; top: 50%;
  width: 4px; height: 4px;
  background: var(--sage); border-radius: 50%;
  transform: translateY(-50%) scale(0); transition: transform .25s var(--ease-out);
}
.dd-item:hover::before, .bc-dd-item:hover::before { transform: translateY(-50%) scale(1); }
.dd-item:hover { padding-left: 32px; background: var(--sage-mist); color: var(--sage-dark); }

/* ── 9. Stats — refine separator + numeric tone ─────────────── */
.stats-strip {
  background:
    linear-gradient(180deg, transparent, color-mix(in oklab, var(--linen) 35%, transparent)),
    var(--warm-white);
  border-top: var(--rule);
}
.stat-num {
  font-weight: 300; letter-spacing: -3px;
  font-variant-numeric: oldstyle-nums proportional-nums;
}
.stat-plus { color: var(--sage-dark); }
.stat-sep {
  background: linear-gradient(to bottom, transparent, var(--parchment), transparent);
  height: 64px;
}

/* ── 10. Section heads — editorial rule + small-caps eyebrow ─ */
.section-head {
  align-items: end;
  border-bottom: 1px solid var(--ornament);
  position: relative;
}
.section-head::after {
  content: ''; position: absolute; left: 0; bottom: -1px;
  width: 84px; height: 2px; background: var(--sage);
}
.section-head h2 {
  font-size: clamp(28px, 3.4vw, 36px);
  font-weight: 400;
  letter-spacing: -0.4px;
}
.see-all {
  font-size: 10.5px; letter-spacing: 2px; font-weight: 600;
}

/* ── 11. CARDS — layered shadow, image-zone wash, hover lift ── */
.game-card, .browse-box, .subject-card, .g-card {
  background: var(--warm-white);
  border-color: color-mix(in oklab, var(--parchment) 85%, transparent);
  border-radius: 0;
  box-shadow: var(--shadow-1);
  transition:
    transform .55s var(--ease-out),
    box-shadow .55s var(--ease-out),
    border-color .35s var(--ease-out);
  position: relative; overflow: hidden;
}
.game-card::before, .g-card::before, .subject-card::before, .browse-box::before {
  content: ''; position: absolute; inset: auto 0 0 0; height: 2px;
  background: var(--sage);
  transform: scaleX(0); transform-origin: left;
  transition: transform .5s var(--ease-out);
  z-index: 2;
}
.game-card:hover:not(.locked),
.g-card:hover:not(.locked),
.subject-card:hover,
.browse-box:hover:not(.disabled) {
  transform: translateY(-6px);
  box-shadow: var(--shadow-3);
  border-color: var(--sage-line);
}
.game-card:hover:not(.locked)::before,
.g-card:hover:not(.locked)::before,
.subject-card:hover::before,
.browse-box:hover:not(.disabled)::before { transform: scaleX(1); }

/* image zones get a subtle paper-on-paper wash */
.card-img, .g-banner, .card-banner, .browse-box-banner {
  background:
    radial-gradient(circle at 50% 40%, color-mix(in oklab, var(--sage-mist) 60%, transparent) 0%, transparent 65%),
    linear-gradient(180deg, var(--warm-white), color-mix(in oklab, var(--linen) 60%, var(--warm-white)));
  border-bottom: var(--rule-soft);
  transition: transform .8s var(--ease-out);
}
.game-card:hover:not(.locked) .card-img,
.g-card:hover:not(.locked) .g-banner,
.subject-card:hover .card-banner,
.browse-box:hover:not(.disabled) .browse-box-banner { transform: scale(1.04); }

/* title & meta */
.card-body h3, .g-body h3, .subj-body h3, .browse-box-body h3 {
  font-family: 'Cormorant Garamond', serif;
  font-weight: 600; letter-spacing: -0.2px;
  line-height: 1.25;
}
.card-sub, .g-desc, .subj-desc, .browse-box-body p { color: var(--stone); }

/* badges & tags as small-caps chips */
.badge, .tag {
  font-family: 'Inter', sans-serif;
  font-weight: 600; letter-spacing: 1.2px; text-transform: uppercase;
  font-size: 9.5px; padding: 3px 10px; border-radius: 0;
}
.badge.free { color: var(--sage-dark); border-color: var(--sage-line); background: var(--sage-mist); }
.badge.pro  { background: var(--linen); }

/* play arrow gets a refined hover */
.play-btn, .card-arrow {
  width: 28px; height: 28px; border-radius: 50%;
  background: transparent; border: 1px solid var(--parchment);
  color: var(--sage-dark); transition: all .35s var(--ease-out);
}
.game-card:hover:not(.locked) .play-btn,
.g-card:hover:not(.locked) .play-btn,
.subject-card:hover .card-arrow,
.browse-box:hover:not(.disabled) .play-btn {
  background: var(--sage); border-color: var(--sage); color: var(--warm-white);
  transform: rotate(-45deg);
}

/* ── 12. BROWSE — 1px-gutter mosaic gets ornament corners ──── */
.browse-grid {
  background: var(--parchment);
  gap: 1px; border: 1px solid var(--parchment);
}
.browse-box {
  background: var(--warm-white); border: none;
  transition: background .4s var(--ease-out), transform .4s var(--ease-out);
}
.browse-box:hover:not(.disabled) {
  background: color-mix(in oklab, var(--sage-mist) 75%, var(--warm-white));
  transform: none;
}
.browse-box::before { display: none; }

/* ── 13. PAGE / BROWSE headers — paper-band with bottom rule ─ */
.browse-header, .page-header, .subject-hero, .game-hero {
  background:
    linear-gradient(180deg, var(--linen), var(--alabaster));
  border-bottom: 1px solid var(--ornament);
  position: relative;
}
.browse-header::after, .page-header::after {
  content: ''; position: absolute; left: 3rem; bottom: -1px;
  width: 120px; height: 2px; background: var(--sage);
}
.grade-pill {
  font-weight: 600; letter-spacing: 3.5px;
  padding-bottom: 5px; border-bottom-color: var(--sage);
}

/* ── 14. SHOWCASE cards — editorial mood, deeper hover ──────── */
.showcase-card {
  border-radius: 0;
  box-shadow: var(--shadow-2);
  transition: transform .6s var(--ease-out), box-shadow .6s var(--ease-out);
  position: relative; overflow: hidden;
}
.showcase-card::after {
  content: ''; position: absolute; inset: 0;
  background: linear-gradient(180deg, transparent 55%, rgba(30,23,13,0.45));
  pointer-events: none; transition: opacity .5s var(--ease-out);
  z-index: 1;
}
.showcase-card:hover {
  transform: translateY(-8px);
  box-shadow: var(--shadow-3);
}
.showcase-card:hover::after { opacity: 0.85; }
.showcase-card .showcase-content { position: relative; z-index: 2; }
.showcase-card h3 {
  font-family: 'Cormorant Garamond', serif;
  font-weight: 500; letter-spacing: -0.4px;
}
.showcase-tag {
  letter-spacing: 2px !important;
  font-weight: 600 !important;
}
.showcase-cta {
  letter-spacing: 1.2px; font-weight: 600;
  transition: transform .35s var(--ease-out);
  display: inline-block;
}
.showcase-card:hover .showcase-cta { transform: translateX(6px); }

/* ── 15. Scroll cue & misc motion ──────────────────────────── */
.scroll-cue-bar {
  background: linear-gradient(to bottom, transparent, var(--ornament) 40%, transparent);
}
[data-animate] {
  transition:
    opacity 1s var(--ease-out),
    transform 1s var(--ease-out);
}

/* ── 16. Selection + focus polish ──────────────────────────── */
::selection { background: var(--sage); color: var(--warm-white); }
:focus-visible {
  outline: 2px solid var(--sage);
  outline-offset: 3px;
}

/* ── 17. Reduced motion ────────────────────────────────────── */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    transition-duration: 0.01ms !important;
  }
}