/* Cellhue site. One stylesheet, no external fonts or scripts. */
:root {
  --bg: #f6f6f8;
  --card: #ffffff;
  --line: #e6e6ea;
  --ink: #16161a;
  --text: #2c2c33;
  --muted: #6b6b75;
  --soft: #efeff2;
  --pro: #6d3df5;
  --pro-bg: #f0eaff;
  --red: #e5484d;
  --green: #30a46c;
  --yellow: #f5c518;
  --blue: #3e63dd;
  --code-bg: #f1f1f4;
  --radius: 14px;
  --max: 1040px;
  color-scheme: light;
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #111114;
    --card: #1a1a1f;
    --line: #2b2b33;
    --ink: #f3f3f6;
    --text: #d6d6dc;
    --muted: #9a9aa5;
    --soft: #24242b;
    --pro: #a58bff;
    --pro-bg: #2a2140;
    --code-bg: #22222a;
    color-scheme: dark;
  }
}

* { box-sizing: border-box; }

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

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font: 16px/1.6 Inter, -apple-system, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
}

a { color: var(--ink); text-underline-offset: 3px; }
a:hover { color: var(--pro); }

h1, h2, h3 { color: var(--ink); line-height: 1.2; letter-spacing: -0.02em; }
h1 { font-size: clamp(2rem, 5vw, 3.2rem); margin: 0 0 16px; }
h2 { font-size: clamp(1.4rem, 3vw, 1.9rem); margin: 0 0 12px; }
h3 { font-size: 1.1rem; margin: 0 0 6px; }

p { margin: 0 0 14px; }

code {
  font: 0.9em/1.4 ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  background: var(--code-bg);
  padding: 2px 6px;
  border-radius: 6px;
  overflow-wrap: anywhere;
}

pre {
  background: var(--code-bg);
  padding: 14px 16px;
  border-radius: 10px;
  overflow-x: auto;
  margin: 0 0 16px;
}
pre code { background: none; padding: 0; }

.wrap { max-width: var(--max); margin: 0 auto; padding: 0 16px; }
.narrow { max-width: 760px; }

/* Header */
.top {
  border-bottom: 1px solid var(--line);
  background: var(--card);
}
.top .wrap {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  min-height: 60px;
  flex-wrap: wrap;
}
.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-weight: 700;
  font-size: 1.1rem;
  color: var(--ink);
  text-decoration: none;
}
.brand img { width: 26px; height: 26px; }
.nav { display: flex; gap: 18px; flex-wrap: wrap; font-size: 0.95rem; }
.nav a { text-decoration: none; color: var(--muted); }
.nav a:hover, .nav a[aria-current="page"] { color: var(--ink); }

/* Buttons */
.btn {
  display: inline-block;
  padding: 12px 22px;
  border-radius: 12px;
  background: var(--ink);
  color: var(--bg);
  font-weight: 600;
  text-decoration: none;
}
.btn:hover { color: var(--bg); opacity: 0.88; }
.btn.ghost { background: var(--soft); color: var(--ink); }
.btn.ghost:hover { color: var(--ink); }

/* Hero */
.hero { padding: 64px 0 40px; }
.hero .wrap {
  display: grid;
  grid-template-columns: 1.1fr 1fr;
  gap: 40px;
  align-items: center;
}
.lead { font-size: 1.15rem; color: var(--muted); max-width: 34em; }
.actions { display: flex; gap: 12px; flex-wrap: wrap; margin: 24px 0 12px; }
.fine { font-size: 0.9rem; color: var(--muted); }

/* Fake sheet in the hero */
.demo {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 16px;
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.06);
  min-width: 0;
}
.sheet { display: grid; grid-template-columns: repeat(4, 1fr); gap: 4px; margin-bottom: 14px; }
.sheet span {
  border-radius: 6px;
  padding: 8px 10px;
  text-align: right;
  font: 600 0.9rem ui-monospace, Menlo, Consolas, monospace;
  color: #16161a;
}
.r { background: #ff8d8f; }
.g { background: #8be0a6; }
.y { background: #ffe27a; }
.formula {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  padding: 10px 12px;
  border-radius: 10px;
  background: var(--soft);
  font: 0.85rem ui-monospace, Menlo, Consolas, monospace;
  margin-top: 6px;
  flex-wrap: wrap;
}
.formula b { color: var(--ink); }

/* Sections */
section { padding: 40px 0; }
.grid3 { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; }
.grid2 { display: grid; grid-template-columns: repeat(2, 1fr); gap: 16px; }
.card {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 22px;
}
.card p:last-child { margin-bottom: 0; }
.dot { display: inline-block; width: 10px; height: 10px; border-radius: 50%; margin-right: 8px; }

/* Plans */
.plan h3 { display: flex; align-items: center; gap: 8px; }
.plan ul { padding-left: 20px; margin: 10px 0 0; }
.plan li { margin-bottom: 6px; }
.plan.pro { border-color: var(--pro); }
.badge {
  font-size: 0.75rem;
  font-weight: 600;
  padding: 2px 9px;
  border-radius: 99px;
  background: var(--pro-bg);
  color: var(--pro);
}
.price { font-size: 1.6rem; font-weight: 700; color: var(--ink); margin: 6px 0 0; }

/* Policy band on the home page (always visible, no menu needed) */
.policy {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 18px 22px;
}

/* Documents */
.doc { padding: 48px 0 24px; }
.doc h2 { margin-top: 36px; font-size: 1.35rem; }
.doc ul, .doc ol { padding-left: 22px; margin: 0 0 14px; }
.doc li { margin-bottom: 6px; }
.updated { color: var(--muted); font-size: 0.95rem; }
.toc { background: var(--card); border: 1px solid var(--line); border-radius: var(--radius); padding: 16px 22px; margin: 20px 0; }
.toc ul { margin: 0; }

table { width: 100%; border-collapse: collapse; margin: 0 0 16px; font-size: 0.95rem; }
th, td { text-align: left; padding: 10px 8px; border-bottom: 1px solid var(--line); vertical-align: top; }
th { color: var(--ink); }
.table-wrap { overflow-x: auto; }

.note {
  border-left: 3px solid var(--pro);
  background: var(--pro-bg);
  padding: 12px 16px;
  border-radius: 0 10px 10px 0;
  margin: 0 0 16px;
}

/* Footer */
.foot {
  border-top: 1px solid var(--line);
  margin-top: 40px;
  padding: 28px 0 40px;
  font-size: 0.9rem;
  color: var(--muted);
}
.foot .links { display: flex; gap: 18px; flex-wrap: wrap; margin-bottom: 12px; }
.foot a { color: var(--ink); }

@media (max-width: 820px) {
  .hero { padding: 40px 0 24px; }
  .hero .wrap { grid-template-columns: 1fr; }
  .grid3, .grid2 { grid-template-columns: 1fr; }
}

@media (max-width: 420px) {
  .nav { gap: 12px; }
  .sheet span { padding: 6px; font-size: 0.8rem; }
}