/* ------------------------------------------------------------------
   SpeedCube AI Analyzer — site styles
   A deliberate single-world "night mode cubing" aesthetic:
   deep cool-neutral ground, the six cube sticker colors as the palette.
------------------------------------------------------------------ */

:root {
  --bg:        #0A0C0F;
  --bg-elev:   #101318;
  --card:      #14181E;
  --card-2:    #171C23;
  --border:    #242B34;
  --border-lt: #2E3742;
  --text:      #EAEEF3;
  --dim:       #98A2AE;
  --dimmer:    #6B7480;

  /* Cube sticker colors */
  --cw: #F5F5F2;
  --cr: #E23A2E;
  --cb: #2E6DE6;
  --co: #F2941C;
  --cg: #2FBE5C;
  --cy: #F5CF1E;

  --accent:    #2FBE5C;   /* speed = go = green */
  --accent-ink:#04160B;
  --accent-2:  #2E6DE6;

  --radius:    16px;
  --radius-sm: 10px;
  --maxw:      1080px;

  --font-display: 'Bricolage Grotesque', 'Inter', system-ui, sans-serif;
  --font-body:    'Inter', system-ui, -apple-system, sans-serif;
  --font-mono:    'JetBrains Mono', ui-monospace, 'SF Mono', Menlo, monospace;
}

* { box-sizing: border-box; margin: 0; padding: 0; }

html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }

body {
  font-family: var(--font-body);
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
  font-size: 17px;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  overflow-x: hidden;
}

/* Ambient glow behind the hero */
body::before {
  content: "";
  position: fixed;
  inset: 0;
  background:
    radial-gradient(60% 40% at 78% 8%, rgba(47,190,92,0.10), transparent 60%),
    radial-gradient(50% 40% at 12% 0%, rgba(46,109,230,0.10), transparent 55%);
  pointer-events: none;
  z-index: 0;
}

a { color: inherit; text-decoration: none; }

h1, h2, h3, h4 {
  font-family: var(--font-display);
  font-weight: 700;
  line-height: 1.08;
  letter-spacing: -0.02em;
  text-wrap: balance;
}

.wrap { max-width: var(--maxw); margin: 0 auto; padding: 0 24px; position: relative; z-index: 1; }
.narrow { max-width: 760px; }

/* ---------------- Nav ---------------- */
.nav {
  position: sticky; top: 0; z-index: 50;
  backdrop-filter: saturate(140%) blur(12px);
  background: rgba(10,12,15,0.72);
  border-bottom: 1px solid var(--border);
}
.nav-inner {
  display: flex; align-items: center; justify-content: space-between;
  height: 64px; max-width: var(--maxw); margin: 0 auto; padding: 0 24px;
}
.brand { display: flex; align-items: center; gap: 10px; font-family: var(--font-display); font-weight: 700; font-size: 18px; letter-spacing: -0.01em; }
.brand .logo { width: 30px; height: 30px; border-radius: 8px; display: block; object-fit: cover; box-shadow: inset 0 0 0 1px var(--border-lt); }
.footer .brand .logo { width: 36px; height: 36px; }
.nav-links { display: flex; align-items: center; gap: 26px; font-size: 15px; }
.nav-links a { color: var(--dim); transition: color .15s; }
.nav-links a:hover { color: var(--text); }
.nav-cta {
  background: var(--accent); color: var(--accent-ink) !important;
  padding: 9px 16px; border-radius: 999px; font-weight: 600; font-size: 14px;
}
.nav-cta:hover { filter: brightness(1.08); }

@media (max-width: 640px) {
  .nav-links a:not(.nav-cta) { display: none; }
}

/* ---------------- Hero ---------------- */
.hero { padding: 84px 0 72px; }
.hero-grid { display: grid; grid-template-columns: 1.05fr 0.95fr; gap: 56px; align-items: center; }
.eyebrow {
  display: inline-flex; align-items: center; gap: 8px;
  font-size: 13px; font-weight: 600; letter-spacing: 0.04em; text-transform: uppercase;
  color: var(--accent); background: rgba(47,190,92,0.10);
  border: 1px solid rgba(47,190,92,0.25); padding: 6px 12px; border-radius: 999px; margin-bottom: 22px;
}
.hero h1 { font-size: clamp(38px, 6vw, 62px); }
.hero h1 .grad { color: var(--accent); }

/* Brand lockup — real app icon + name + motto */
.app-lockup { display: flex; align-items: center; gap: 15px; margin-bottom: 26px; }
.app-logo { width: 60px; height: 60px; border-radius: 15px; box-shadow: 0 12px 30px -10px rgba(0,0,0,0.75), inset 0 0 0 1px rgba(255,255,255,0.05); }
.app-lockup-text { display: flex; flex-direction: column; }
.app-name { font-family: var(--font-display); font-weight: 700; font-size: 19px; letter-spacing: -0.01em; }
.app-moto { color: var(--dim); font-size: 14.5px; }
.hero p.lede { color: var(--dim); font-size: 19px; margin-top: 22px; max-width: 30em; }
.cta-row { display: flex; gap: 14px; margin-top: 34px; flex-wrap: wrap; }
.btn {
  display: inline-flex; align-items: center; gap: 9px;
  padding: 13px 22px; border-radius: 12px; font-weight: 600; font-size: 15px;
  border: 1px solid transparent; transition: all .15s; cursor: pointer;
}
.btn-primary { background: var(--accent); color: var(--accent-ink); }
.btn-primary:hover { filter: brightness(1.08); transform: translateY(-1px); }
.btn-ghost { background: var(--card); color: var(--text); border-color: var(--border-lt); }
.btn-ghost:hover { background: var(--card-2); border-color: var(--dimmer); }
.hero .note { margin-top: 18px; font-size: 13.5px; color: var(--dimmer); }

/* App-screen mock */
.mock {
  position: relative; margin-left: auto;
  width: 300px; max-width: 100%;
  border-radius: 34px; padding: 14px;
  background: linear-gradient(160deg, #1b2129, #0d1015);
  border: 1px solid var(--border-lt);
  box-shadow: 0 40px 80px -30px rgba(0,0,0,0.8), 0 0 0 1px rgba(255,255,255,0.02);
}
.mock-screen {
  border-radius: 24px; background: radial-gradient(120% 90% at 50% 0%, #12161c, #0a0d11);
  padding: 26px 22px 30px; overflow: hidden; border: 1px solid var(--border);
}
.mock-scramble { font-family: var(--font-mono); font-size: 13px; color: var(--dim); letter-spacing: 0.02em; text-align: center; line-height: 1.9; }
.cube-face {
  width: 132px; height: 132px; margin: 26px auto 24px;
  display: grid; grid-template-columns: repeat(3,1fr); grid-template-rows: repeat(3,1fr);
  gap: 6px; transform: rotateX(12deg) rotateZ(-2deg);
  filter: drop-shadow(0 18px 24px rgba(0,0,0,0.5));
}
.cube-face i { border-radius: 5px; box-shadow: inset 0 0 0 1px rgba(0,0,0,0.35), inset 0 2px 4px rgba(255,255,255,0.18); }
.mock-time { font-family: var(--font-mono); font-weight: 700; font-size: 46px; text-align: center; letter-spacing: -0.02em; }
.mock-time small { color: var(--accent); }
.mock-meta { display: flex; justify-content: center; gap: 18px; margin-top: 14px; font-size: 12px; color: var(--dimmer); font-family: var(--font-mono); }
.mock-meta b { color: var(--dim); font-weight: 600; }

@media (max-width: 860px) {
  .hero-grid { grid-template-columns: 1fr; gap: 44px; }
  .mock { margin: 0 auto; }
}

/* ---------------- Sections ---------------- */
section { position: relative; z-index: 1; }
.section { padding: 72px 0; }
.section-head { max-width: 640px; margin-bottom: 44px; }
.section-head .kicker { color: var(--accent); font-weight: 600; font-size: 14px; letter-spacing: 0.04em; text-transform: uppercase; }
.section-head h2 { font-size: clamp(28px, 4vw, 40px); margin-top: 12px; }
.section-head p { color: var(--dim); margin-top: 14px; font-size: 18px; }

.grid-3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 20px; }
.grid-2 { display: grid; grid-template-columns: repeat(2, 1fr); gap: 20px; }
@media (max-width: 820px) { .grid-3 { grid-template-columns: 1fr; } .grid-2 { grid-template-columns: 1fr; } }

.card {
  background: linear-gradient(180deg, var(--card), var(--bg-elev));
  border: 1px solid var(--border); border-radius: var(--radius);
  padding: 26px; transition: border-color .2s, transform .2s;
}
.card:hover { border-color: var(--border-lt); transform: translateY(-2px); }
.card .ico {
  width: 44px; height: 44px; border-radius: 11px; display: grid; place-items: center;
  color: var(--accent); margin-bottom: 16px; background: var(--card-2); border: 1px solid var(--border-lt);
}
.card .ico svg { width: 22px; height: 22px; }
.grid-3 .card:nth-child(1) .ico { color: var(--cr); }
.grid-3 .card:nth-child(2) .ico { color: var(--cb); }
.grid-3 .card:nth-child(3) .ico { color: var(--cg); }
.grid-3 .card:nth-child(4) .ico { color: var(--cy); }
.grid-3 .card:nth-child(5) .ico { color: var(--co); }
.grid-3 .card:nth-child(6) .ico { color: var(--dim); }
.card h3 { font-size: 20px; }
.card p { color: var(--dim); margin-top: 9px; font-size: 15.5px; }

/* Events pills */
.events { display: flex; flex-wrap: wrap; gap: 10px; }
.pill { border: 1px solid var(--border-lt); background: var(--card); color: var(--dim); padding: 8px 15px; border-radius: 999px; font-size: 14px; font-weight: 500; }
.pill b { color: var(--text); font-weight: 600; }

/* Split feature (WCA) */
.split { display: grid; grid-template-columns: 1fr 1fr; gap: 44px; align-items: center; }
@media (max-width: 820px) { .split { grid-template-columns: 1fr; gap: 28px; } }
.compare {
  background: var(--card); border: 1px solid var(--border); border-radius: var(--radius); overflow: hidden;
}
.compare-row { display: grid; grid-template-columns: 1fr 1fr; }
.compare-row + .compare-row { border-top: 1px solid var(--border); }
.compare-cell { padding: 16px 20px; }
.compare-cell:first-child { border-right: 1px solid var(--border); }
.compare-cell .lbl { font-size: 12px; text-transform: uppercase; letter-spacing: 0.05em; color: var(--dimmer); }
.compare-cell .val { font-family: var(--font-mono); font-size: 22px; font-weight: 700; margin-top: 4px; }
.compare-head .compare-cell { background: var(--card-2); }
.compare-head .val { font-size: 13px; font-family: var(--font-body); color: var(--dim); font-weight: 600; text-transform: none; letter-spacing: 0; }
.tag-official { color: var(--accent-2); }
.tag-practice { color: var(--accent); }

/* CTA band */
.band {
  text-align: center; border: 1px solid var(--border); border-radius: 22px;
  padding: 56px 28px; background:
    radial-gradient(80% 120% at 50% 0%, rgba(47,190,92,0.08), transparent 60%), var(--bg-elev);
}
.band h2 { font-size: clamp(28px, 4vw, 38px); }
.band p { color: var(--dim); margin-top: 12px; }

/* ---------------- Legal / doc pages ---------------- */
.doc { padding: 56px 0 40px; }
.doc h1 { font-size: clamp(32px, 5vw, 46px); }
.doc .updated { color: var(--dimmer); margin-top: 12px; font-size: 15px; }
.doc-body { margin-top: 40px; }
.doc-body h2 { font-size: 23px; margin: 40px 0 12px; }
.doc-body h3 { font-size: 18px; margin: 26px 0 8px; }
.doc-body p, .doc-body li { color: #C6CDD5; font-size: 16.5px; }
.doc-body p { margin: 12px 0; }
.doc-body ul { margin: 12px 0 12px 22px; }
.doc-body li { margin: 7px 0; }
.doc-body a { color: var(--accent); text-decoration: underline; text-underline-offset: 2px; }
.doc-body strong { color: var(--text); }
.callout {
  background: var(--card); border: 1px solid var(--border-lt); border-left: 3px solid var(--accent);
  border-radius: var(--radius-sm); padding: 18px 20px; margin: 22px 0;
}
.callout p { margin: 6px 0; }

/* FAQ */
.faq { border: 1px solid var(--border); border-radius: var(--radius); overflow: hidden; margin-top: 8px; }
.faq details { border-bottom: 1px solid var(--border); }
.faq details:last-child { border-bottom: none; }
.faq summary {
  list-style: none; cursor: pointer; padding: 20px 22px; font-weight: 600; font-size: 17px;
  display: flex; justify-content: space-between; align-items: center; gap: 16px;
}
.faq summary::-webkit-details-marker { display: none; }
.faq summary::after { content: "+"; color: var(--accent); font-size: 22px; font-weight: 400; transition: transform .2s; }
.faq details[open] summary::after { transform: rotate(45deg); }
.faq .ans { padding: 0 22px 22px; color: var(--dim); font-size: 16px; }
.faq .ans a { color: var(--accent); text-decoration: underline; }

.contact-card {
  display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between; gap: 18px;
  background: var(--card); border: 1px solid var(--border-lt); border-radius: var(--radius); padding: 24px 26px; margin-top: 8px;
}
.contact-card .em { font-family: var(--font-mono); font-size: 17px; color: var(--text); }

/* ---------------- Footer ---------------- */
.footer { border-top: 1px solid var(--border); margin-top: 40px; padding: 44px 0 60px; }
.footer-grid { display: flex; flex-wrap: wrap; justify-content: space-between; gap: 28px; }
.footer .brand { margin-bottom: 12px; }
.footer p { color: var(--dimmer); font-size: 14px; max-width: 34em; }
.footer-links { display: flex; gap: 28px; flex-wrap: wrap; }
.footer-links a { color: var(--dim); font-size: 15px; }
.footer-links a:hover { color: var(--text); }
.footer .fine { color: var(--dimmer); font-size: 13px; margin-top: 26px; line-height: 1.7; }

.backlink { display: inline-flex; align-items: center; gap: 7px; color: var(--dim); font-size: 15px; margin-bottom: 8px; }
.backlink:hover { color: var(--text); }