/* =========================================================
   COREBALL — design tokens
   Palette: near-black charcoal-navy base, coral core accent,
   teal "gap/timing" accent. Circular / orbit motifs throughout
   to echo the actual game mechanic (spin, gap, throw).
   Display: Space Grotesk · Body: Inter · Data/HUD: JetBrains Mono
========================================================= */

:root{
  --bg: #10121A;
  --bg-alt: #14171F;
  --surface: #1B1F2B;
  --surface-2: #232838;
  --border: rgba(237,239,245,0.09);
  --border-strong: rgba(237,239,245,0.16);

  --text: #EDEFF5;
  --text-dim: #9AA1B4;
  --text-faint: #6B7284;

  --core: #FF5A3C;      /* the ball / primary accent */
  --core-dim: #C74428;
  --core-glow: rgba(255,90,60,0.35);

  --gap: #46E0CC;        /* the safe gap / timing accent */
  --gap-dim: #2FA695;

  --warn: #F2C94C;

  --radius-s: 8px;
  --radius-m: 14px;
  --radius-l: 24px;
  --radius-full: 999px;

  --container: 1120px;
  --shadow-soft: 0 20px 60px -20px rgba(0,0,0,0.6);
}

*,*::before,*::after{ box-sizing:border-box; }
html{ scroll-behavior:smooth; }
body{
  margin:0;
  background:
    radial-gradient(ellipse 900px 500px at 85% -10%, rgba(255,90,60,0.10), transparent 60%),
    radial-gradient(ellipse 700px 500px at -10% 20%, rgba(70,224,204,0.08), transparent 55%),
    var(--bg);
  color:var(--text);
  font-family:'Inter',system-ui,-apple-system,sans-serif;
  font-size:16px;
  line-height:1.6;
  -webkit-font-smoothing:antialiased;
}
h1,h2,h3,h4{
  font-family:'Space Grotesk',sans-serif;
  font-weight:600;
  line-height:1.15;
  letter-spacing:-0.01em;
  margin:0 0 .5em;
  color:var(--text);
}
h1{ font-size:clamp(2.1rem,4.4vw,3.4rem); font-weight:700; letter-spacing:-0.02em; }
h2{ font-size:clamp(1.5rem,2.6vw,2.05rem); }
h3{ font-size:1.2rem; }
p{ margin:0 0 1em; color:var(--text-dim); }
a{ color:inherit; text-decoration:none; }
ul,ol{ margin:0 0 1em; padding-left:1.25em; color:var(--text-dim); }
li{ margin-bottom:.4em; }
strong{ color:var(--text); }
.mono{ font-family:'JetBrains Mono',monospace; }

img{ max-width:100%; display:block; }

.container{ max-width:var(--container); margin:0 auto; padding:0 24px; }
.section{ padding:76px 0; }
.section-tight{ padding:48px 0; }
.section-alt{ background:var(--bg-alt); border-top:1px solid var(--border); border-bottom:1px solid var(--border); }

.eyebrow{
  display:inline-flex; align-items:center; gap:8px;
  font-family:'JetBrains Mono',monospace;
  font-size:.72rem; letter-spacing:.14em; text-transform:uppercase;
  color:var(--gap); margin-bottom:14px;
}
.eyebrow::before{
  content:''; width:7px; height:7px; border-radius:50%;
  background:var(--gap); box-shadow:0 0 0 3px rgba(70,224,204,0.18);
}

/* ---------- buttons ---------- */
.btn{
  display:inline-flex; align-items:center; justify-content:center; gap:10px;
  font-family:'Space Grotesk',sans-serif; font-weight:600; font-size:.98rem;
  padding:14px 26px; border-radius:var(--radius-full);
  border:1px solid transparent; cursor:pointer; transition:.18s ease;
  white-space:nowrap;
}
.btn-primary{
  background:var(--core); color:#170D09;
  box-shadow:0 10px 30px -8px var(--core-glow);
}
.btn-primary:hover{ background:#FF6E52; transform:translateY(-2px); box-shadow:0 16px 34px -10px var(--core-glow); }
.btn-ghost{
  background:transparent; color:var(--text); border-color:var(--border-strong);
}
.btn-ghost:hover{ border-color:var(--gap); color:var(--gap); }
.btn-block{ width:100%; }

/* ---------- header / nav ---------- */
header.site-header{
  position:sticky; top:0; z-index:100;
  background:rgba(16,18,26,0.82); backdrop-filter:blur(14px);
  border-bottom:1px solid var(--border);
}
.nav-row{ display:flex; align-items:center; justify-content:space-between; padding:16px 24px; max-width:var(--container); margin:0 auto; }
.brand{ display:flex; align-items:center; gap:10px; font-family:'Space Grotesk',sans-serif; font-weight:700; font-size:1.2rem; color:var(--text); }
.brand-mark{ width:26px; height:26px; position:relative; flex:none; }
.brand-mark svg{ width:100%; height:100%; }

nav.main-nav{ display:flex; align-items:center; gap:2px; }
.nav-item{ position:relative; }
.nav-link{
  display:flex; align-items:center; gap:5px;
  padding:10px 14px; border-radius:var(--radius-full);
  font-size:.92rem; color:var(--text-dim); font-weight:500;
  transition:.15s ease;
}
.nav-link:hover, .nav-link.active{ color:var(--text); background:var(--surface); }
.nav-item .chev{ width:9px; height:9px; border-right:1.5px solid currentColor; border-bottom:1.5px solid currentColor; transform:rotate(45deg); margin-top:-3px; opacity:.7;}

.dropdown{
  position:absolute; top:calc(100% + 10px); left:0; min-width:230px;
  background:var(--surface-2); border:1px solid var(--border-strong);
  border-radius:var(--radius-m); padding:8px; box-shadow:var(--shadow-soft);
  opacity:0; visibility:hidden; transform:translateY(6px);
  transition:.16s ease; z-index:50;
}
.nav-item:hover .dropdown{ opacity:1; visibility:visible; transform:translateY(0); }
.dropdown a{ display:block; padding:9px 12px; border-radius:var(--radius-s); font-size:.9rem; color:var(--text-dim); }
.dropdown a:hover{ background:var(--surface); color:var(--gap); }

.nav-cta{ display:flex; align-items:center; gap:10px; }
.menu-toggle{ display:none; background:none; border:1px solid var(--border-strong); border-radius:var(--radius-s); width:40px; height:40px; color:var(--text); }

@media (max-width: 880px){
  nav.main-nav, .nav-cta .btn-ghost{ display:none; }
  .menu-toggle{ display:block; }
  .nav-row.mobile-open nav.main-nav{
    display:flex; flex-direction:column; align-items:stretch; gap:2px;
    position:fixed; top:66px; left:0; right:0; background:var(--bg-alt);
    padding:14px; border-bottom:1px solid var(--border); max-height:75vh; overflow:auto;
  }
  .nav-row.mobile-open .dropdown{ position:static; opacity:1; visibility:visible; transform:none; margin:4px 0 8px 10px; box-shadow:none; }
}

/* ---------- hero / orbit visual ---------- */
.hero{ padding:64px 0 40px; position:relative; overflow:hidden; }
.hero-grid{ display:grid; grid-template-columns:1.1fr 0.9fr; gap:56px; align-items:center; }
@media (max-width:920px){ .hero-grid{ grid-template-columns:1fr; } }

.orbit-wrap{ position:relative; aspect-ratio:1/1; max-width:420px; margin:0 auto; }
.orbit-wrap svg{ width:100%; height:100%; }
.orbit-core{ transform-origin:center; }
.orbit-spin{ animation:spin 6s linear infinite; transform-origin:210px 210px; }
.orbit-ball{ filter:drop-shadow(0 0 10px var(--core-glow)); }
.orbit-fly{ animation:fly 1.8s ease-in-out infinite; }
@keyframes spin{ to{ transform:rotate(360deg); } }
@keyframes fly{
  0%{ transform:translate(0,-160px) scale(.4); opacity:0; }
  35%{ opacity:1; }
  55%{ transform:translate(0,-6px) scale(1); opacity:1; }
  70%{ transform:translate(0,-6px) scale(1); opacity:1; }
  100%{ transform:translate(0,-6px) scale(1); opacity:0; }
}
@media (prefers-reduced-motion: reduce){
  .orbit-spin, .orbit-fly{ animation:none !important; }
}

.hero-badges{ display:flex; flex-wrap:wrap; gap:10px; margin:20px 0 28px; }
.badge{
  font-family:'JetBrains Mono',monospace; font-size:.76rem; color:var(--text-dim);
  border:1px solid var(--border-strong); border-radius:var(--radius-full);
  padding:7px 13px; display:flex; align-items:center; gap:7px;
}
.badge .dot{ width:6px;height:6px;border-radius:50%; background:var(--gap); }
.hero-actions{ display:flex; gap:14px; flex-wrap:wrap; }

/* ---------- game canvas panel ---------- */
.game-panel{
  background:var(--surface); border:1px solid var(--border-strong);
  border-radius:var(--radius-l); padding:18px; box-shadow:var(--shadow-soft);
}
.game-topbar{ display:flex; justify-content:space-between; align-items:center; margin-bottom:12px; font-family:'JetBrains Mono',monospace; font-size:.78rem; color:var(--text-dim); }
.game-topbar span.val{ color:var(--gap); }
#coreCanvas{ width:100%; aspect-ratio:1/1; border-radius:var(--radius-m); background:radial-gradient(circle at 50% 40%, #1E2334, #0E101A 75%); display:block; touch-action:none; }
.game-hint{ text-align:center; font-size:.82rem; color:var(--text-faint); margin-top:12px; }
.game-controls{ display:flex; gap:10px; margin-top:14px; }

/* ---------- cards / grid ---------- */
.grid{ display:grid; gap:20px; }
.grid-3{ grid-template-columns:repeat(3,1fr); }
.grid-2{ grid-template-columns:repeat(2,1fr); }
@media (max-width:860px){ .grid-3{ grid-template-columns:1fr 1fr; } }
@media (max-width:620px){ .grid-3,.grid-2{ grid-template-columns:1fr; } }

.card{
  background:var(--surface); border:1px solid var(--border);
  border-radius:var(--radius-m); padding:26px;
  transition:.18s ease;
}
.card:hover{ border-color:var(--border-strong); transform:translateY(-3px); }
.card h3{ margin-bottom:8px; }
.card p{ margin-bottom:0; font-size:.94rem; }
.card-icon{ width:38px; height:38px; margin-bottom:16px; }

.tag{
  display:inline-block; font-family:'JetBrains Mono',monospace; font-size:.7rem;
  color:var(--core); background:rgba(255,90,60,0.12); border-radius:var(--radius-full);
  padding:4px 10px; margin-bottom:10px; letter-spacing:.04em;
}

/* ---------- orbit divider ---------- */
.orbit-divider{ display:flex; align-items:center; gap:10px; margin:56px 0 36px; }
.orbit-divider .line{ flex:1; height:1px; background:var(--border); }
.orbit-divider .dots{ display:flex; gap:6px; }
.orbit-divider .dots span{ width:5px; height:5px; border-radius:50%; background:var(--border-strong); }
.orbit-divider .dots span:nth-child(2){ background:var(--gap); }

/* ---------- steps ---------- */
.steps{ counter-reset:step; display:flex; flex-direction:column; gap:14px; }
.step{ display:flex; gap:18px; padding:18px 0; border-bottom:1px solid var(--border); }
.step:last-child{ border-bottom:none; }
.step-num{
  counter-increment:step; content:counter(step);
  font-family:'JetBrains Mono',monospace; font-size:.85rem; color:var(--gap);
  width:34px; height:34px; border-radius:50%; border:1px solid var(--gap-dim);
  display:flex; align-items:center; justify-content:center; flex:none;
}
.step-num::before{ content:counter(step); }
.step-body p{ margin-bottom:0; }
.step-body h4{ margin-bottom:4px; font-size:1.02rem; }

/* ---------- callout / warning box ---------- */
.callout{
  border:1px solid var(--border-strong); border-radius:var(--radius-m);
  padding:22px 24px; background:var(--surface-2); margin:26px 0;
}
.callout-warn{ border-color:rgba(242,201,76,0.4); background:rgba(242,201,76,0.06); }
.callout-warn .callout-title{ color:var(--warn); }
.callout-title{ font-family:'Space Grotesk',sans-serif; font-weight:600; margin-bottom:10px; display:flex; align-items:center; gap:8px; }
.callout ul{ margin-bottom:0; }

.hack-list{ list-style:none; padding:0; margin:0; counter-reset:hk; }
.hack-list li{
  counter-increment:hk; position:relative; padding:14px 0 14px 46px; border-bottom:1px solid var(--border);
}
.hack-list li:last-child{ border-bottom:none; }
.hack-list li::before{
  content:counter(hk); position:absolute; left:0; top:12px;
  width:28px; height:28px; border-radius:50%; background:var(--core);
  color:#170D09; font-family:'JetBrains Mono',monospace; font-weight:700; font-size:.8rem;
  display:flex; align-items:center; justify-content:center;
}

/* ---------- table ---------- */
.table-wrap{ overflow-x:auto; margin:20px 0; border:1px solid var(--border); border-radius:var(--radius-m); }
table{ width:100%; border-collapse:collapse; font-size:.92rem; }
th,td{ text-align:left; padding:13px 16px; border-bottom:1px solid var(--border); }
th{ font-family:'Space Grotesk',sans-serif; color:var(--text); background:var(--surface-2); font-weight:600; }
td{ color:var(--text-dim); }
tr:last-child td{ border-bottom:none; }

/* ---------- FAQ accordion ---------- */
.faq{ border-top:1px solid var(--border); }
.faq-item{ border-bottom:1px solid var(--border); }
.faq-q{
  width:100%; text-align:left; background:none; border:none; cursor:pointer;
  color:var(--text); font-family:'Space Grotesk',sans-serif; font-size:1.02rem; font-weight:600;
  padding:20px 0; display:flex; justify-content:space-between; align-items:center; gap:16px;
}
.faq-q .plus{ width:22px; height:22px; flex:none; position:relative; }
.faq-q .plus::before,.faq-q .plus::after{ content:''; position:absolute; background:var(--gap); border-radius:2px; }
.faq-q .plus::before{ width:14px; height:2px; top:10px; left:4px; }
.faq-q .plus::after{ width:2px; height:14px; left:10px; top:4px; transition:.2s ease; }
.faq-item.open .plus::after{ transform:scaleY(0); }
.faq-a{ max-height:0; overflow:hidden; transition:.25s ease; }
.faq-a p{ padding-bottom:20px; margin:0; }
.faq-item.open .faq-a{ max-height:400px; }

/* ---------- level pills / stat strip ---------- */
.stat-strip{ display:flex; flex-wrap:wrap; gap:14px; margin:28px 0; }
.stat{
  flex:1; min-width:140px; border:1px solid var(--border); border-radius:var(--radius-m);
  padding:18px; background:var(--surface);
}
.stat .num{ font-family:'JetBrains Mono',monospace; font-size:1.7rem; color:var(--core); }
.stat .lbl{ font-size:.78rem; color:var(--text-faint); text-transform:uppercase; letter-spacing:.06em; margin-top:4px; }

.level-pill{
  display:inline-flex; align-items:center; gap:8px;
  font-family:'JetBrains Mono',monospace; font-size:.8rem;
  border:1px solid var(--border-strong); border-radius:var(--radius-full);
  padding:6px 13px; color:var(--text-dim);
}

/* ---------- explore / related links ---------- */
.explore{ display:grid; grid-template-columns:repeat(4,1fr); gap:14px; margin-top:20px;}
@media (max-width:860px){ .explore{ grid-template-columns:1fr 1fr; } }
@media (max-width:560px){ .explore{ grid-template-columns:1fr; } }
.explore a{
  border:1px solid var(--border); border-radius:var(--radius-m); padding:16px;
  font-size:.88rem; color:var(--text-dim); display:flex; align-items:center; justify-content:space-between;
  transition:.15s ease;
}
.explore a:hover{ border-color:var(--gap); color:var(--text); }

/* ---------- final CTA ---------- */
.cta-band{
  border-radius:var(--radius-l); padding:56px; text-align:center;
  background:linear-gradient(145deg, rgba(255,90,60,0.14), rgba(70,224,204,0.08)), var(--surface);
  border:1px solid var(--border-strong);
}
.cta-band h2{ margin-bottom:10px; }
.cta-band p{ max-width:520px; margin:0 auto 26px; }

/* ---------- footer ---------- */
footer.site-footer{ border-top:1px solid var(--border); padding:56px 0 30px; background:var(--bg-alt); }
.footer-grid{ display:grid; grid-template-columns:1.4fr repeat(3,1fr); gap:36px; margin-bottom:40px; }
@media (max-width:760px){ .footer-grid{ grid-template-columns:1fr 1fr; } }
.footer-col h4{ font-size:.8rem; text-transform:uppercase; letter-spacing:.08em; color:var(--text-faint); margin-bottom:14px; }
.footer-col a{ display:block; color:var(--text-dim); font-size:.9rem; padding:5px 0; }
.footer-col a:hover{ color:var(--gap); }
.footer-brand p{ font-size:.88rem; max-width:280px; }
.footer-bottom{
  display:flex; justify-content:space-between; align-items:center; flex-wrap:wrap; gap:12px;
  padding-top:24px; border-top:1px solid var(--border);
  font-size:.82rem; color:var(--text-faint);
}
.footer-bottom .legal-links{ display:flex; flex-wrap:wrap; gap:14px; }
.footer-bottom a:hover{ color:var(--gap); }

/* ---------- legal page layout ---------- */
.legal-updated{ font-family:'JetBrains Mono',monospace; font-size:.8rem; color:var(--text-faint); margin-bottom:32px; }
.legal-body h2{ font-size:1.3rem; margin-top:2.2em; }
.legal-body h3{ font-size:1.05rem; margin-top:1.6em; color:var(--text); }
.legal-body p, .legal-body li{ color:var(--text-dim); }
.legal-body a{ color:var(--gap); }
.legal-toc{
  border:1px solid var(--border); border-radius:var(--radius-m); padding:20px 22px; margin-bottom:40px;
  background:var(--surface);
}
.legal-toc h4{ font-family:'Space Grotesk',sans-serif; margin-bottom:10px; font-size:.85rem; text-transform:uppercase; letter-spacing:.06em; color:var(--text-faint); }
.legal-toc ol{ margin:0; padding-left:1.1em; columns:2; column-gap:24px; }
.legal-toc a{ color:var(--text-dim); font-size:.88rem; }
.legal-toc a:hover{ color:var(--gap); }
@media (max-width:640px){ .legal-toc ol{ columns:1; } }

/* ---------- author card ---------- */
.author-card{ display:grid; grid-template-columns:220px 1fr; gap:36px; align-items:start; }
@media (max-width:720px){ .author-card{ grid-template-columns:1fr; } }
.author-photo{
  width:100%; aspect-ratio:1/1; border-radius:var(--radius-l); overflow:hidden;
  background:linear-gradient(160deg, var(--surface-2), var(--surface)); border:1px solid var(--border-strong);
  display:flex; align-items:center; justify-content:center;
}
.quote{
  border-left:2px solid var(--core); padding-left:20px; margin:28px 0; font-style:italic; color:var(--text);
  font-family:'Space Grotesk',sans-serif; font-size:1.05rem;
}

/* utility */
.center{ text-align:center; }
.mt-0{ margin-top:0; }
.small{ font-size:.85rem; color:var(--text-faint); }
:focus-visible{ outline:2px solid var(--gap); outline-offset:2px; }