/* Cognisle — The Clockwork Isles marketing site
   Palette: dusk-navy sky, aged-blueprint parchment, brass, power-cell amber,
   patina-teal. Type: Fraunces (display), Nunito Sans (body), Space Mono (labels). */

:root {
  --sky-900: #0d1226;
  --sky-800: #141b38;
  --sky-700: #1b2647;
  --sky-glow: #3a3560;

  --paper: #f5eedc;
  --paper-2: #efe4c9;
  --ink: #241c12;
  --ink-soft: #6a5b45;

  --brass: #c6923e;
  --brass-deep: #9a6e2c;
  --amber: #ffb23a;
  --amber-hot: #ff9e1b;
  --patina: #2e8b84;
  --patina-light: #6fc0b8;

  --line: rgba(198, 146, 62, 0.32);
  --line-soft: rgba(198, 146, 62, 0.18);
  --sky-line: rgba(255, 210, 140, 0.16);

  --font-display: "Fraunces", Georgia, "Times New Roman", serif;
  --font-body: "Nunito Sans", system-ui, -apple-system, Segoe UI, Roboto, sans-serif;
  --font-mono: "Space Mono", ui-monospace, "SF Mono", Menlo, monospace;

  --wrap: 1120px;
  --radius: 18px;
  --shadow: 0 18px 50px -24px rgba(13, 18, 38, 0.55);
  --ease: cubic-bezier(0.22, 1, 0.36, 1);
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  font-family: var(--font-body);
  color: var(--ink);
  background: var(--paper);
  font-size: 18px;
  line-height: 1.62;
  -webkit-font-smoothing: antialiased;
}

h1, h2, h3 {
  font-family: var(--font-display);
  font-weight: 600;
  font-variation-settings: "opsz" 120, "SOFT" 40, "WONK" 0;
  line-height: 1.04;
  letter-spacing: -0.01em;
  margin: 0;
}

p { margin: 0 0 1rem; }
a { color: inherit; }
img, svg { max-width: 100%; display: block; }

.wrap { width: 100%; max-width: var(--wrap); margin: 0 auto; padding: 0 24px; }

.eyebrow {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--brass-deep);
  margin: 0 0 1rem;
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
}
.eyebrow::before {
  content: "";
  width: 26px;
  height: 1px;
  background: var(--brass);
  display: inline-block;
}

/* ---------- Buttons ---------- */
.btn {
  --btn-bg: var(--amber);
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
  font-family: var(--font-body);
  font-weight: 800;
  font-size: 1rem;
  letter-spacing: 0.01em;
  padding: 0.95rem 1.6rem;
  border-radius: 999px;
  border: 1px solid transparent;
  text-decoration: none;
  cursor: pointer;
  transition: transform 0.18s var(--ease), box-shadow 0.18s var(--ease),
    background 0.18s var(--ease);
}
.btn-primary {
  background: linear-gradient(180deg, var(--amber), var(--amber-hot));
  color: #3a2708;
  box-shadow: 0 10px 30px -8px rgba(255, 158, 27, 0.6),
    inset 0 1px 0 rgba(255, 255, 255, 0.4);
}
.btn-primary:hover { transform: translateY(-2px); box-shadow: 0 16px 38px -10px rgba(255, 158, 27, 0.7); }
.btn-ghost {
  background: transparent;
  color: var(--paper);
  border-color: rgba(255, 210, 140, 0.4);
}
.btn-ghost:hover { border-color: var(--amber); color: #fff; }
.btn-dark {
  background: var(--sky-700);
  color: var(--paper);
  border-color: rgba(255, 210, 140, 0.2);
}
.btn-dark:hover { transform: translateY(-2px); background: var(--sky-800); }
.btn[aria-disabled="true"] {
  background: var(--paper-2);
  color: var(--ink-soft);
  box-shadow: none;
  cursor: not-allowed;
  border: 1px dashed var(--brass);
}
.btn[aria-disabled="true"]:hover { transform: none; }

/* ---------- Top nav ---------- */
.nav {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(13, 18, 38, 0.82);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--sky-line);
}
.nav .wrap { display: flex; align-items: center; justify-content: space-between; height: 68px; }
.brand { display: inline-flex; align-items: center; gap: 0.6rem; text-decoration: none; color: var(--paper); }
.brand-mark { width: 30px; height: 30px; }
.brand-name { font-family: var(--font-display); font-weight: 600; font-size: 1.28rem; letter-spacing: -0.01em; }
.nav-links { display: flex; align-items: center; gap: 1.6rem; }
.nav-links a { color: rgba(245, 238, 220, 0.82); text-decoration: none; font-size: 0.95rem; font-weight: 600; }
.nav-links a:hover { color: var(--amber); }
.nav-cta { padding: 0.6rem 1.15rem; font-size: 0.92rem; }

/* ---------- Hero ---------- */
.hero {
  position: relative;
  background:
    radial-gradient(120% 90% at 80% -10%, rgba(255, 178, 58, 0.16), transparent 55%),
    radial-gradient(90% 80% at 12% 20%, rgba(46, 139, 132, 0.14), transparent 60%),
    linear-gradient(180deg, var(--sky-900), var(--sky-700) 70%, var(--sky-glow));
  color: var(--paper);
  overflow: hidden;
}
.hero-stars { position: absolute; inset: 0; opacity: 0.7; }
.hero .wrap {
  position: relative;
  display: grid;
  grid-template-columns: 1.05fr 0.95fr;
  gap: 40px;
  align-items: center;
  padding-top: 78px;
  padding-bottom: 96px;
}
.hero-copy { max-width: 34rem; }
.hero h1 { font-size: clamp(2.7rem, 6.2vw, 5rem); font-weight: 600; }
.hero h1 em {
  font-style: italic;
  font-variation-settings: "opsz" 120, "SOFT" 60, "WONK" 1;
  color: var(--amber);
}
.hero-sub {
  font-size: 1.2rem;
  color: rgba(245, 238, 220, 0.88);
  margin: 1.4rem 0 2rem;
  max-width: 30rem;
}
.hero-actions { display: flex; flex-wrap: wrap; gap: 0.9rem; align-items: center; }
.hero-note {
  font-family: var(--font-mono);
  font-size: 0.74rem;
  letter-spacing: 0.06em;
  color: rgba(245, 238, 220, 0.6);
  margin-top: 1.6rem;
}
.hero-note strong { color: var(--patina-light); font-weight: 400; }

/* Floating isle scene */
.scene { position: relative; }
.scene svg { width: 100%; height: auto; filter: drop-shadow(0 30px 40px rgba(0, 0, 0, 0.45)); }
.float { animation: float 7s ease-in-out infinite; transform-origin: center; }
@keyframes float { 0%, 100% { transform: translateY(0); } 50% { transform: translateY(-14px); } }
.spin-slow { animation: spin 26s linear infinite; transform-origin: center; transform-box: fill-box; }
.spin-rev { animation: spin 20s linear infinite reverse; transform-origin: center; transform-box: fill-box; }
@keyframes spin { to { transform: rotate(360deg); } }
.twinkle { animation: twinkle 4s ease-in-out infinite; }
@keyframes twinkle { 0%, 100% { opacity: 0.25; } 50% { opacity: 0.9; } }

/* ---------- Section scaffolding ---------- */
.section { padding: 96px 0; }
.section-head { max-width: 40rem; margin-bottom: 3rem; }
.section-head h2 { font-size: clamp(2rem, 4vw, 3rem); }
.section-head p { font-size: 1.15rem; color: var(--ink-soft); margin-top: 1rem; }
.section-dark { background: linear-gradient(180deg, var(--sky-800), var(--sky-900)); color: var(--paper); }
.section-dark .section-head p { color: rgba(245, 238, 220, 0.78); }
.section-dark .eyebrow { color: var(--amber); }
.section-dark .eyebrow::before { background: var(--amber); }
.section-paper2 { background: var(--paper-2); }

/* ---------- Play-not-quiz contrast ---------- */
.contrast { display: grid; grid-template-columns: 1fr 1fr; gap: 24px; }
.contrast-card {
  border-radius: var(--radius);
  padding: 2rem;
  border: 1px solid var(--line);
}
.card-quiz { background: var(--paper); }
.card-play {
  background: linear-gradient(180deg, #1c2749, #141b38);
  color: var(--paper);
  border-color: rgba(255, 210, 140, 0.22);
  box-shadow: var(--shadow);
}
.contrast-tag {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  display: inline-block;
  margin-bottom: 1rem;
  padding: 0.2rem 0.7rem;
  border-radius: 999px;
}
.card-quiz .contrast-tag { background: var(--paper-2); color: var(--ink-soft); }
.card-play .contrast-tag { background: rgba(255, 178, 58, 0.16); color: var(--amber); }
.contrast-card h3 { font-size: 1.5rem; margin-bottom: 0.6rem; }
.card-play h3 { color: #fff; }
.contrast-card p { color: var(--ink-soft); margin: 0; }
.card-play p { color: rgba(245, 238, 220, 0.82); }

/* ---------- Mastery ladder (SIGNATURE) ---------- */
.ladder { margin-top: 2.5rem; }
.ladder-cells { display: flex; gap: 14px; flex-wrap: wrap; }
.cell {
  flex: 1 1 0;
  min-width: 130px;
  position: relative;
  border-radius: 16px;
  padding: 1.3rem 1.1rem 1.15rem;
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid rgba(255, 210, 140, 0.22);
  overflow: hidden;
  transition: border-color 0.5s var(--ease), background 0.5s var(--ease);
}
.cell::before {
  content: "";
  position: absolute;
  left: 0; right: 0; bottom: 0;
  height: 0%;
  background: linear-gradient(180deg, rgba(255, 178, 58, 0.28), rgba(255, 158, 27, 0.12));
  transition: height 0.7s var(--ease);
}
.cell.lit { border-color: var(--amber); background: rgba(255, 178, 58, 0.08); }
.cell.lit::before { height: 100%; }
.cell-inner { position: relative; z-index: 1; }
.cell-gear { width: 34px; height: 34px; color: rgba(255, 210, 140, 0.45); transition: color 0.5s var(--ease); }
.cell.lit .cell-gear { color: var(--amber); }
.cell-level { font-family: var(--font-mono); font-size: 0.7rem; letter-spacing: 0.14em; text-transform: uppercase; color: rgba(245, 238, 220, 0.55); margin-top: 0.9rem; }
.cell.lit .cell-level { color: var(--amber); }
.cell-label { font-family: var(--font-display); font-size: 1.15rem; color: rgba(245, 238, 220, 0.7); margin-top: 0.15rem; }
.cell.lit .cell-label { color: #fff; }
.cell-master { border-color: var(--patina); }
.cell-master.lit { border-color: var(--patina-light); background: rgba(46, 139, 132, 0.14); }
.cell-master.lit::before { background: linear-gradient(180deg, rgba(111, 192, 184, 0.3), rgba(46, 139, 132, 0.12)); }
.cell-master .cell-gear, .cell-master.lit .cell-gear { color: var(--patina-light); }
.cell-master.lit .cell-level { color: var(--patina-light); }
.ladder-caption { font-family: var(--font-mono); font-size: 0.76rem; letter-spacing: 0.05em; color: rgba(245, 238, 220, 0.55); margin-top: 1.4rem; }

/* ---------- Feature grid ---------- */
.features { display: grid; grid-template-columns: repeat(3, 1fr); gap: 24px; }
.feature { padding: 1.9rem; border-radius: var(--radius); background: var(--paper); border: 1px solid var(--line-soft); }
.feature-ico {
  width: 46px; height: 46px; border-radius: 12px;
  display: grid; place-items: center;
  background: linear-gradient(180deg, rgba(198, 146, 62, 0.16), rgba(198, 146, 62, 0.06));
  color: var(--brass-deep); margin-bottom: 1.1rem;
}
.feature h3 { font-size: 1.3rem; margin-bottom: 0.5rem; }
.feature p { color: var(--ink-soft); margin: 0; font-size: 0.98rem; }

/* ---------- Parents band ---------- */
.parents { display: grid; grid-template-columns: 1fr 1fr; gap: 48px; align-items: start; }
.trust-list { list-style: none; padding: 0; margin: 0; display: grid; gap: 1.1rem; }
.trust-list li { display: flex; gap: 0.9rem; align-items: flex-start; }
.trust-check {
  flex: none; width: 26px; height: 26px; border-radius: 50%;
  background: rgba(46, 139, 132, 0.16); color: var(--patina);
  display: grid; place-items: center; margin-top: 2px;
}
.section-dark .trust-check { background: rgba(111, 192, 184, 0.18); color: var(--patina-light); }
.trust-list strong { display: block; font-family: var(--font-display); font-size: 1.1rem; font-weight: 600; }
.trust-list span { color: rgba(245, 238, 220, 0.72); font-size: 0.98rem; }

/* ---------- World strip ---------- */
.world { display: grid; grid-template-columns: 0.9fr 1.1fr; gap: 40px; align-items: center; }
.world-quote { font-family: var(--font-display); font-size: clamp(1.5rem, 2.6vw, 2.1rem); line-height: 1.28; }
.world-quote span { color: var(--brass); }

/* ---------- Download CTA band ---------- */
.cta-band { text-align: center; }
.cta-band .section-head { margin: 0 auto 2rem; text-align: center; }
.cta-band h2 { font-size: clamp(2.2rem, 4.5vw, 3.4rem); }
.cta-actions { display: flex; gap: 0.9rem; justify-content: center; flex-wrap: wrap; }
.cta-fine { font-family: var(--font-mono); font-size: 0.74rem; letter-spacing: 0.05em; color: rgba(245, 238, 220, 0.55); margin-top: 1.4rem; }

/* ---------- Download page ---------- */
/* Override the hero's tall wrap padding so main.hero.dl isn't double-padded. */
.dl .wrap { padding-top: 48px; padding-bottom: 66px; }
.dl-grid { display: grid; grid-template-columns: 1.05fr 0.95fr; gap: 48px; align-items: center; }
.dl h1 { font-size: clamp(2.4rem, 5vw, 3.6rem); }
.dl-sub { font-size: 1.15rem; color: rgba(245, 238, 220, 0.82); margin: 1.2rem 0 2rem; }
.dl-panel {
  background: linear-gradient(180deg, #1c2749, #10152a);
  border: 1px solid rgba(255, 210, 140, 0.22);
  border-radius: var(--radius);
  padding: 2.2rem;
  box-shadow: var(--shadow);
  text-align: center;
}
.dl-badge {
  display: inline-flex; align-items: center; gap: 0.5rem;
  font-family: var(--font-mono); font-size: 0.72rem; letter-spacing: 0.14em; text-transform: uppercase;
  color: var(--amber); background: rgba(255, 178, 58, 0.12);
  padding: 0.35rem 0.85rem; border-radius: 999px; margin-bottom: 1.4rem;
}
.dl-status {
  display: inline-flex; align-items: center; gap: 0.5rem;
  font-family: var(--font-mono); font-size: 0.72rem; letter-spacing: 0.12em; text-transform: uppercase;
}
.dl-dot { width: 8px; height: 8px; border-radius: 50%; background: var(--amber); box-shadow: 0 0 10px var(--amber); }
.dl-meta { font-family: var(--font-mono); font-size: 0.78rem; color: rgba(245, 238, 220, 0.55); margin-top: 1.2rem; }
.dl-btn-wrap { margin: 1.6rem 0 0.4rem; }
.dl-btn-wrap .btn { width: 100%; justify-content: center; }

.steps { counter-reset: step; list-style: none; padding: 0; margin: 2rem 0 0; display: grid; gap: 1.2rem; }
.steps li { display: grid; grid-template-columns: 40px 1fr; gap: 1rem; align-items: start; }
.steps li::before {
  counter-increment: step; content: counter(step, decimal-leading-zero);
  font-family: var(--font-mono); font-size: 0.85rem; color: var(--amber);
  border: 1px solid rgba(255, 210, 140, 0.3); border-radius: 10px;
  width: 40px; height: 40px; display: grid; place-items: center;
}
.steps strong { display: block; }
.steps span { color: rgba(245, 238, 220, 0.72); font-size: 0.95rem; }

.specs { display: flex; flex-wrap: wrap; gap: 0.6rem; margin-top: 2rem; }
.spec-pill { font-family: var(--font-mono); font-size: 0.74rem; letter-spacing: 0.05em; padding: 0.4rem 0.85rem; border-radius: 999px; border: 1px solid rgba(255, 210, 140, 0.24); color: rgba(245, 238, 220, 0.8); }

/* ---------- Footer ---------- */
.footer { background: var(--sky-900); color: rgba(245, 238, 220, 0.7); padding: 56px 0 40px; border-top: 1px solid var(--sky-line); }
.footer .wrap { display: flex; flex-wrap: wrap; gap: 24px; justify-content: space-between; align-items: center; }
.footer a { color: rgba(245, 238, 220, 0.7); text-decoration: none; }
.footer a:hover { color: var(--amber); }
.footer-links { display: flex; gap: 1.4rem; flex-wrap: wrap; font-size: 0.92rem; }
.footer-fine { font-family: var(--font-mono); font-size: 0.72rem; letter-spacing: 0.03em; width: 100%; color: rgba(245, 238, 220, 0.42); border-top: 1px solid var(--sky-line); padding-top: 20px; margin-top: 8px; }

/* ---------- Focus + motion ---------- */
:focus-visible { outline: 3px solid var(--amber); outline-offset: 3px; border-radius: 6px; }

@media (prefers-reduced-motion: reduce) {
  *, *::before { animation: none !important; transition: none !important; scroll-behavior: auto; }
  .cell.lit::before { height: 100%; }
}

/* ---------- Responsive ---------- */
@media (max-width: 900px) {
  body { font-size: 17px; }
  .hero .wrap { grid-template-columns: 1fr; padding-top: 56px; padding-bottom: 64px; }
  .scene { order: -1; max-width: 460px; }
  .contrast, .features, .parents, .world, .dl-grid { grid-template-columns: 1fr; }
  .nav-links a:not(.nav-cta) { display: none; }
  .section { padding: 68px 0; }
}
@media (max-width: 560px) {
  .features { grid-template-columns: 1fr; }
  .cell { min-width: 100%; }
}