/* Layout: one underwater column — sunlit surface at the top, deep water in the middle, sand at the bottom.
   The page is a single committed look (the reef), so it stays dark-water in both themes. */
:root {
  --surface: #2fb3b5;     /* sunlit shallows */
  --lagoon: #0f6c80;      /* mid water */
  --abyss: #0a3247;       /* deep water, main ground */
  --trench: #072536;      /* deepest panels */
  --foam: #f3fbfa;        /* main text */
  --mist: #a9d3d6;        /* secondary text */
  --sand: #f3dfb8;        /* seabed */
  --sand-ink: #4a3a22;    /* text on sand */
  --coral: #ff6f59;       /* accent */
  --sun: #ffc845;
  --kelp: #5fcf80;
  --sky: #3fb6e8;
  --anemone: #b07cf0;

  --display: "Lilita One", "Arial Rounded MT Bold", "Trebuchet MS", system-ui, sans-serif;
  --body: "Nunito", "Segoe UI", system-ui, -apple-system, sans-serif;

  --step--1: 0.875rem;
  --step-0: 1.0625rem;
  --step-1: 1.3rem;
  --step-2: 1.75rem;
  --step-3: 2.4rem;
  --step-4: clamp(2.6rem, 7vw, 4.4rem);

  --radius: 14px;
  --gutter-l: max(16px, env(safe-area-inset-left, 0px));
  --gutter-r: max(16px, env(safe-area-inset-right, 0px));
  color-scheme: dark;
}

*, *::before, *::after { box-sizing: border-box; }

html { background: var(--abyss); }
body {
  margin: 0;
  background: var(--abyss);
  color: var(--foam);
  font-family: var(--body);
  font-size: var(--step-0);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}
img, svg { max-width: 100%; }

a { color: var(--sun); text-underline-offset: 3px; }
a:hover { color: #ffe08a; }
:focus-visible { outline: 3px solid var(--sun); outline-offset: 3px; border-radius: 6px; }

h1, h2, h3 {
  font-family: var(--display);
  font-weight: 400;
  line-height: 1.1;
  letter-spacing: 0.01em;
  text-wrap: balance;
  margin: 0;
}

.wrap {
  width: 100%;
  max-width: 1080px;
  margin-inline: auto;
  padding-left: var(--gutter-l);
  padding-right: var(--gutter-r);
}

/* ---------- Header ---------- */
.site-header {
  position: relative;
  z-index: 2;
}
.site-header .wrap {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  flex-wrap: wrap;
  padding-block: 18px;
}
.wordmark {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-family: var(--display);
  font-size: 1.5rem;
  color: var(--foam);
  text-decoration: none;
  text-shadow: 0 2px 0 rgba(7, 37, 54, 0.45);
}
.wordmark:hover { color: var(--foam); }
.wordmark svg { width: 34px; height: 34px; flex: none; }
.site-nav { display: flex; gap: 6px 20px; flex-wrap: wrap; }
.site-nav a {
  color: var(--foam);
  font-weight: 800;
  font-size: var(--step--1);
  text-decoration: none;
  letter-spacing: 0.04em;
  text-transform: uppercase;
}
.site-nav a:hover, .site-nav a[aria-current="page"] { color: var(--sun); }

/* ---------- Hero ---------- */
.hero {
  position: relative;
  overflow: hidden;
  background:
    linear-gradient(180deg, var(--surface) 0%, var(--lagoon) 48%, var(--abyss) 100%);
}
.hero::before {
  /* sun rays through the water */
  content: "";
  position: absolute;
  inset: -20% -10% 0 -10%;
  background:
    repeating-linear-gradient(100deg,
      rgba(255, 245, 200, 0) 0 60px,
      rgba(255, 245, 200, 0.10) 60px 90px,
      rgba(255, 245, 200, 0) 90px 170px);
  mask-image: linear-gradient(180deg, #000 0%, transparent 75%);
  -webkit-mask-image: linear-gradient(180deg, #000 0%, transparent 75%);
  pointer-events: none;
}
.hero-inner {
  position: relative;
  display: grid;
  grid-template-columns: minmax(0, 1.05fr) minmax(0, 0.95fr);
  gap: 40px;
  align-items: center;
  padding-block: 28px 72px;
}
.hero-copy { min-width: 0; }
.eyebrow {
  display: inline-block;
  font-weight: 800;
  font-size: var(--step--1);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--trench);
  background: var(--sun);
  padding: 4px 12px;
  border-radius: 999px;
  margin-bottom: 18px;
}
.hero h1 {
  font-size: var(--step-4);
  color: var(--foam);
  text-shadow: 0 4px 0 rgba(7, 37, 54, 0.35);
}
.hero p.lede {
  font-size: var(--step-1);
  line-height: 1.5;
  color: var(--foam);
  max-width: 30ch;
  margin: 18px 0 28px;
}
.cta-row { display: flex; gap: 12px; flex-wrap: wrap; align-items: center; }
.btn {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-family: var(--display);
  font-size: 1.15rem;
  letter-spacing: 0.02em;
  color: var(--trench);
  background: var(--sun);
  border: 0;
  border-radius: 16px;
  padding: 14px 22px 12px;
  box-shadow: inset 0 3px 0 rgba(255, 255, 255, 0.55), 0 5px 0 #c98f12;
  text-decoration: none;
}
.btn:hover { color: var(--trench); transform: translateY(1px); box-shadow: inset 0 3px 0 rgba(255,255,255,0.55), 0 4px 0 #c98f12; }
.btn.is-soon { cursor: default; }
.btn.is-soon:hover { transform: none; box-shadow: inset 0 3px 0 rgba(255,255,255,0.55), 0 5px 0 #c98f12; }
.btn svg { width: 22px; height: 22px; }
.cta-note { font-size: var(--step--1); color: var(--mist); font-weight: 700; }

/* ---------- Demo board ---------- */
.board-stage {
  position: relative;
  justify-self: center;
  width: min(100%, 420px);
}
.board {
  position: relative;
  display: grid;
  grid-template-columns: repeat(8, 1fr);
  gap: 5px;
  padding: 12px;
  aspect-ratio: 1 / 1;
  max-width: 100%;
  border-radius: 22px;
  background: rgba(7, 37, 54, 0.62);
  box-shadow: inset 0 2px 0 rgba(255, 255, 255, 0.12), 0 18px 40px rgba(7, 37, 54, 0.45);
}
.cell {
  border-radius: 7px;
  background: rgba(169, 211, 214, 0.08);
  box-shadow: inset 0 0 0 1px rgba(169, 211, 214, 0.06);
  transition: background 0.18s ease, transform 0.18s ease, opacity 0.25s ease;
}
.cell[data-c] {
  /* chunky carved tile */
  box-shadow:
    inset 0 3px 0 rgba(255, 255, 255, 0.45),
    inset 0 -4px 0 rgba(0, 0, 0, 0.22);
}
.cell[data-c="coral"] { background: var(--coral); }
.cell[data-c="sun"] { background: var(--sun); }
.cell[data-c="kelp"] { background: var(--kelp); }
.cell[data-c="sky"] { background: var(--sky); }
.cell[data-c="anemone"] { background: var(--anemone); }
.cell.is-clearing { background: #fffbe6 !important; transform: scale(1.08); }
.cell.is-gone { opacity: 0; transform: scale(0.4); }
.cell.is-drop { animation: drop 0.28s ease-out both; }
@keyframes drop { from { transform: translateY(-14px) scale(1.1); opacity: 0.4; } to { transform: none; opacity: 1; } }

.callout {
  position: absolute;
  left: 50%;
  top: 46%;
  translate: -50% -50%;
  font-family: var(--display);
  font-size: clamp(1.8rem, 6vw, 2.6rem);
  color: var(--sun);
  -webkit-text-stroke: 2px var(--trench);
  paint-order: stroke fill;
  text-shadow: 0 5px 0 var(--trench);
  white-space: nowrap;
  pointer-events: none;
  opacity: 0;
  scale: 0.6;
  transition: opacity 0.2s ease, scale 0.25s cubic-bezier(.3,1.6,.5,1);
}
.callout.is-on { opacity: 1; scale: 1; }

.bubbles { position: absolute; inset: 0; pointer-events: none; overflow: hidden; }
.bubbles span {
  position: absolute;
  bottom: -20px;
  width: 10px; height: 10px;
  border-radius: 50%;
  border: 2px solid rgba(243, 251, 250, 0.45);
  animation: rise linear infinite;
}
@keyframes rise { to { transform: translateY(-110vh) translateX(16px); } }

/* ---------- Sections ---------- */
.section { padding-block: 72px; }
.section + .section { padding-top: 24px; }
.section-head { max-width: 640px; margin-bottom: 32px; }
.section-head h2 { font-size: var(--step-3); }
.section-head p { color: var(--mist); margin: 12px 0 0; font-size: var(--step-1); line-height: 1.5; }

.modes {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 18px;
}
.mode {
  min-width: 0;
  background: var(--trench);
  border-radius: var(--radius);
  padding: 24px;
  display: grid;
  grid-template-columns: 52px minmax(0, 1fr);
  gap: 4px 18px;
  align-content: start;
}
.mode .glyph {
  grid-row: span 2;
  width: 52px; height: 52px;
  border-radius: 12px;
  box-shadow: inset 0 3px 0 rgba(255,255,255,0.45), inset 0 -4px 0 rgba(0,0,0,0.22);
  display: grid; place-items: center;
}
.mode .glyph svg { width: 28px; height: 28px; }
.mode h3 { font-size: var(--step-2); align-self: end; }
.mode p { margin: 0; color: var(--mist); }
.mode ul { grid-column: 2; margin: 10px 0 0; padding-left: 1.1em; color: var(--mist); }
.mode li { margin-top: 4px; }

/* Power blocks */
.powers {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 18px;
}
.power {
  min-width: 0;
  display: flex;
  gap: 20px;
  align-items: center;
  border: 2px solid rgba(169, 211, 214, 0.18);
  border-radius: var(--radius);
  padding: 20px 24px;
}
.power .mini {
  flex: none;
  display: grid;
  grid-template-columns: repeat(5, 14px);
  gap: 3px;
}
.power .mini i { width: 14px; height: 14px; border-radius: 3px; background: rgba(169,211,214,0.12); }
.power .mini i.on { background: var(--sun); box-shadow: inset 0 2px 0 rgba(255,255,255,0.5); }
.power .mini.zap i.on { background: var(--sky); }
.power h3 { font-size: var(--step-1); }
.power p { margin: 4px 0 0; color: var(--mist); }

/* Reef + collection */
.reef-band {
  background: linear-gradient(180deg, var(--abyss) 0%, var(--lagoon) 100%);
}
.reef-grid {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
  gap: 40px;
  align-items: center;
}
.reef-grid > * { min-width: 0; }
.friends {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 14px;
}
.friend {
  background: rgba(7, 37, 54, 0.55);
  border-radius: var(--radius);
  padding: 16px 10px 12px;
  text-align: center;
}
.friend svg { width: 64px; height: 64px; display: block; margin: 0 auto 6px; }
.friend b { display: block; font-family: var(--display); font-weight: 400; font-size: 1.1rem; }
.friend small { color: var(--mist); font-size: 0.8rem; }
.rarity {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 22px;
  padding: 0;
  list-style: none;
}
.rarity li {
  font-weight: 800;
  font-size: var(--step--1);
  padding: 4px 12px;
  border-radius: 999px;
  border: 2px solid currentColor;
}
.rarity li:nth-child(1) { color: var(--mist); }
.rarity li:nth-child(2) { color: var(--kelp); }
.rarity li:nth-child(3) { color: var(--sky); }
.rarity li:nth-child(4) { color: var(--sun); }
.reef-copy p { color: var(--foam); }
.reef-copy p.muted { color: var(--mist); }

/* Fair play */
.fair {
  background: var(--sand);
  color: var(--sand-ink);
}
.fair .section-head p { color: var(--sand-ink); }
.fair-list {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 14px 36px;
  margin: 0;
  padding: 0;
  list-style: none;
}
.fair-list li {
  min-width: 0;
  display: grid;
  grid-template-columns: 28px minmax(0, 1fr);
  gap: 12px;
  align-items: start;
  font-weight: 700;
}
.fair-list svg { width: 28px; height: 28px; }
.fair-list span { font-weight: 400; display: block; }

/* ---------- Footer ---------- */
.site-footer {
  background: var(--sand);
  color: var(--sand-ink);
  border-top: 2px dashed rgba(74, 58, 34, 0.2);
}
.site-footer .wrap {
  display: flex;
  justify-content: space-between;
  gap: 12px 24px;
  flex-wrap: wrap;
  padding-block: 28px;
  font-size: var(--step--1);
}
.site-footer a { color: var(--sand-ink); font-weight: 800; }
.site-footer nav { display: flex; gap: 18px; flex-wrap: wrap; }

/* ---------- Text pages (support, privacy) ---------- */
.page-hero {
  background: linear-gradient(180deg, var(--surface) 0%, var(--lagoon) 70%, var(--abyss) 100%);
}
.page-hero .wrap { padding-block: 24px 56px; }
.page-hero h1 { font-size: var(--step-3); text-shadow: 0 3px 0 rgba(7,37,54,0.35); }
.page-hero p { margin: 10px 0 0; color: var(--foam); font-size: var(--step-1); max-width: 40ch; }
.prose {
  max-width: 68ch;
  padding-block: 40px 72px;
}
.prose h2 { font-size: var(--step-2); margin-top: 40px; }
.prose h3 { font-size: var(--step-1); margin-top: 26px; }
.prose p, .prose li { color: #dcefef; }
.prose ul { padding-left: 1.2em; }
.prose li { margin-top: 6px; }
.prose strong { color: var(--foam); }
.meta-line { color: var(--mist); font-size: var(--step--1); font-weight: 700; }

.contact-card {
  background: var(--trench);
  border-radius: var(--radius);
  padding: 22px 24px;
  margin-top: 8px;
}
.contact-card .label {
  font-size: var(--step--1);
  font-weight: 800;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--mist);
}
.contact-card .email {
  display: block;
  font-family: var(--display);
  font-size: var(--step-2);
  color: var(--sun);
  word-break: break-all;
  margin-top: 4px;
}

details.faq {
  border-bottom: 1px solid rgba(169, 211, 214, 0.18);
  padding-block: 14px;
}
details.faq summary {
  cursor: pointer;
  font-weight: 800;
  color: var(--foam);
  list-style: none;
  display: flex;
  justify-content: space-between;
  gap: 16px;
}
details.faq summary::-webkit-details-marker { display: none; }
details.faq summary::after { content: "+"; font-family: var(--display); color: var(--sun); font-size: 1.3rem; line-height: 1; }
details.faq[open] summary::after { content: "–"; }
details.faq p { margin: 10px 0 0; }

.table-scroll { overflow-x: auto; }
.prose table { border-collapse: collapse; width: 100%; font-size: var(--step--1); margin-top: 12px; }
.prose th, .prose td { text-align: left; vertical-align: top; padding: 10px 12px; border-bottom: 1px solid rgba(169,211,214,0.18); }
.prose th { color: var(--foam); font-weight: 800; }
.prose td { color: #dcefef; }

/* ---------- Responsive ---------- */
@media (max-width: 820px) {
  .hero-inner, .reef-grid { grid-template-columns: minmax(0, 1fr); }
  .hero-inner { padding-block: 12px 56px; gap: 32px; }
  .board-stage { width: min(100%, 360px); }
  .modes, .powers, .fair-list { grid-template-columns: minmax(0, 1fr); }
  .section { padding-block: 56px; }
}
@media (max-width: 420px) {
  .mode { grid-template-columns: 44px minmax(0, 1fr); padding: 20px; }
  .mode .glyph { width: 44px; height: 44px; }
  .power { flex-direction: column; align-items: flex-start; }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation: none !important; transition: none !important; }
  .bubbles { display: none; }
}