/* MindMosaic design system */
:root{
  --ink:#1E2430; --ink-soft:#4A5468; --ink-faint:#8B94A6;
  --canvas:#F4F6F9; --panel:#FFFFFF; --line:#E3E8EF;
  --c-memory:#E86A5C; --c-word:#E8A13C; --c-math:#8A63E0; --c-logic:#2BB8A8;
  --c-board:#6D60C9; --c-card:#C74B6B; --c-visual:#5CA83C; --c-quiz:#2E9BC4;
  --accent:var(--c-board);
  --radius:14px; --radius-sm:9px;
  --shadow:0 1px 2px rgba(30,36,48,.06),0 8px 24px -12px rgba(30,36,48,.14);
  --font-display:"Bricolage Grotesque",system-ui,sans-serif;
  --font-body:"Inter",system-ui,-apple-system,sans-serif;
}
*{box-sizing:border-box;margin:0;padding:0}
html{scroll-behavior:smooth}
@media (prefers-reduced-motion:reduce){html{scroll-behavior:auto}*,*::before,*::after{animation-duration:.01ms!important;transition-duration:.01ms!important}}
body{font-family:var(--font-body);color:var(--ink);background:var(--canvas);line-height:1.6;-webkit-font-smoothing:antialiased}
img{max-width:100%;display:block}
a{color:var(--accent);text-decoration:none}
a:hover{text-decoration:underline}
:focus-visible{outline:3px solid var(--accent);outline-offset:2px;border-radius:4px}
.wrap{max-width:1120px;margin:0 auto;padding:0 20px}
h1,h2,h3{font-family:var(--font-display);line-height:1.15;letter-spacing:-.01em}
h1{font-size:clamp(1.9rem,4.5vw,3.1rem);font-weight:800}
h2{font-size:clamp(1.4rem,3vw,2rem);font-weight:700}
h3{font-size:1.12rem;font-weight:700}

/* Header */
.site-header{background:var(--panel);border-bottom:1px solid var(--line);position:sticky;top:0;z-index:50}
.site-header .wrap{display:flex;align-items:center;gap:24px;height:64px}
.logo{display:flex;align-items:center;gap:10px;font-family:var(--font-display);font-weight:800;font-size:1.25rem;color:var(--ink)}
.logo:hover{text-decoration:none}
.logo-mark{display:grid;grid-template-columns:1fr 1fr;gap:2px;width:26px;height:26px}
.logo-mark span{border-radius:3px}
.logo-mark span:nth-child(1){background:var(--c-memory)}
.logo-mark span:nth-child(2){background:var(--c-math)}
.logo-mark span:nth-child(3){background:var(--c-logic)}
.logo-mark span:nth-child(4){background:var(--c-word)}
.main-nav{margin-left:auto;display:flex;gap:6px;flex-wrap:wrap}
.main-nav a{color:var(--ink-soft);font-weight:600;font-size:.92rem;padding:7px 12px;border-radius:8px}
.main-nav a:hover{background:var(--canvas);color:var(--ink);text-decoration:none}
.main-nav a[aria-current="page"]{color:var(--ink);background:var(--canvas)}
.nav-toggle{display:none;margin-left:auto;background:none;border:1px solid var(--line);border-radius:8px;padding:8px 12px;font-size:1rem;cursor:pointer}
@media(max-width:820px){
  .nav-toggle{display:block}
  .main-nav{display:none;position:absolute;top:64px;left:0;right:0;background:var(--panel);border-bottom:1px solid var(--line);flex-direction:column;padding:12px 20px;margin:0}
  .main-nav.open{display:flex}
}

/* Hero mosaic */
.hero{padding:64px 0 48px;background:var(--panel);border-bottom:1px solid var(--line);overflow:hidden}
.hero .wrap{display:grid;grid-template-columns:1.2fr .8fr;gap:48px;align-items:center}
@media(max-width:820px){.hero .wrap{grid-template-columns:1fr}}
.hero p.lede{font-size:1.15rem;color:var(--ink-soft);margin:16px 0 26px;max-width:34em}
.hero-mosaic{display:grid;grid-template-columns:repeat(4,1fr);gap:10px;aspect-ratio:4/3}
.hero-mosaic a{border-radius:var(--radius-sm);display:flex;flex-direction:column;gap:3px;align-items:center;justify-content:center;color:#fff;transition:transform .15s ease;text-decoration:none;padding:4px;text-align:center}
.hero-mosaic .mi{font-size:1.45rem;line-height:1}
.hero-mosaic .ml{font-size:.62rem;font-weight:700;letter-spacing:.01em;line-height:1.15;text-shadow:0 1px 2px rgba(0,0,0,.25)}
.hero-mosaic a:hover{transform:translateY(-4px) rotate(-1.5deg)}
.btn{display:inline-block;background:var(--ink);color:#fff;font-weight:700;padding:13px 26px;border-radius:999px;border:none;cursor:pointer;font-size:1rem}
.btn:hover{background:#000;text-decoration:none}
.btn.ghost{background:transparent;color:var(--ink);border:2px solid var(--ink)}

/* Category chips + game grid */
.section{padding:56px 0}
.section-head{display:flex;align-items:baseline;justify-content:space-between;gap:16px;margin-bottom:22px;flex-wrap:wrap}
.eyebrow{font-size:.8rem;font-weight:700;letter-spacing:.08em;text-transform:uppercase;color:var(--ink-faint)}
.game-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(230px,1fr));gap:16px}
.game-card{background:var(--panel);border:1px solid var(--line);border-radius:var(--radius);padding:18px;box-shadow:var(--shadow);display:flex;flex-direction:column;gap:8px;position:relative;transition:transform .15s ease,box-shadow .15s ease}
.game-card:hover{transform:translateY(-3px);box-shadow:0 4px 8px rgba(30,36,48,.08),0 16px 32px -12px rgba(30,36,48,.2)}
.game-card::before{content:"";position:absolute;inset:0 auto 0 0;width:5px;border-radius:var(--radius) 0 0 var(--radius);background:var(--card-color,var(--accent))}
.game-card .cat-tag{font-size:.72rem;font-weight:700;letter-spacing:.06em;text-transform:uppercase;color:var(--card-color,var(--accent))}
.game-card h3 a{color:var(--ink)}
.game-card h3 a::after{content:"";position:absolute;inset:0}
.game-card p{font-size:.9rem;color:var(--ink-soft);flex:1}
.cat-band{display:flex;gap:10px;flex-wrap:wrap;margin:26px 0}
.cat-chip{display:flex;align-items:center;gap:8px;background:var(--panel);border:1px solid var(--line);padding:9px 16px;border-radius:999px;font-weight:600;font-size:.9rem;color:var(--ink)}
.cat-chip:hover{text-decoration:none;border-color:var(--chip-color);color:var(--chip-color)}
.cat-chip .dot{width:10px;height:10px;border-radius:3px;background:var(--chip-color)}

/* Game page */
.game-hero{padding:34px 0 10px}
.crumbs{font-size:.85rem;color:var(--ink-faint);margin-bottom:10px}
.crumbs a{color:var(--ink-faint)}
.game-stage{background:var(--panel);border:1px solid var(--line);border-radius:var(--radius);box-shadow:var(--shadow);padding:22px;margin:22px 0;min-height:320px}
.game-toolbar{display:flex;gap:10px;align-items:center;flex-wrap:wrap;margin-bottom:16px}
.game-toolbar .stat{background:var(--canvas);border-radius:var(--radius-sm);padding:7px 14px;font-weight:700;font-size:.9rem}
.game-toolbar .stat span{color:var(--ink-faint);font-weight:600;font-size:.78rem;text-transform:uppercase;letter-spacing:.05em;display:block}
.game-toolbar .spacer{flex:1}
.gbtn{background:var(--ink);color:#fff;border:none;border-radius:999px;padding:9px 18px;font-weight:700;font-size:.9rem;cursor:pointer;font-family:var(--font-body)}
.gbtn:hover{background:#000}
.gbtn.alt{background:var(--canvas);color:var(--ink)}
.gbtn.alt:hover{background:var(--line)}
.gbtn:disabled{opacity:.45;cursor:not-allowed}
select.gsel,input.ginput{border:1.5px solid var(--line);border-radius:var(--radius-sm);padding:8px 12px;font-size:.95rem;font-family:var(--font-body);background:var(--panel)}
.game-msg{text-align:center;font-weight:700;font-size:1.05rem;min-height:1.7em;margin:10px 0}
.game-msg.win{color:var(--c-logic)}
.game-msg.lose{color:var(--c-memory)}
.game-about{max-width:760px}
.game-about h2{margin:28px 0 10px}
.game-about p{color:var(--ink-soft);margin-bottom:12px}
.game-about ul{color:var(--ink-soft);padding-left:22px;margin-bottom:12px}
.related{margin-top:40px}

/* Footer */
.site-footer{background:var(--ink);color:#B9C0CE;margin-top:60px;padding:44px 0 30px;font-size:.9rem}
.site-footer a{color:#fff}
.footer-grid{display:grid;grid-template-columns:2fr 1fr 1fr 1fr;gap:28px;margin-bottom:28px}
@media(max-width:720px){.footer-grid{grid-template-columns:1fr 1fr}}
.site-footer h4{color:#fff;font-family:var(--font-display);margin-bottom:10px}
.site-footer ul{list-style:none}
.site-footer li{margin-bottom:6px}
.footer-bottom{border-top:1px solid rgba(255,255,255,.15);padding-top:18px;display:flex;justify-content:space-between;gap:12px;flex-wrap:wrap}

/* Shared game bits */
.board-grid{display:grid;gap:8px;justify-content:center;margin:0 auto;touch-action:manipulation}
.tile{border-radius:var(--radius-sm);display:flex;align-items:center;justify-content:center;font-weight:800;cursor:pointer;user-select:-webkit-user-select;user-select:none;border:none;font-family:var(--font-body)}
.overlay-win{padding:26px;text-align:center}
.overlay-win .big{font-size:2.4rem}
@media(max-width:560px){.game-stage{padding:14px}}