/* Casa Health site — shared styles. Self-contained: system fonts, no CDNs. */

:root {
  --ink:        #22302a;
  --ink-soft:   #55635b;
  --green-deep: #16352a;
  --green:      #1e5c44;
  --green-mid:  #2e7d5b;
  --green-soft: #e3efe8;
  --amber:      #c96f1e;
  --red:        #b3402f;
  --cream:      #faf7f1;
  --card:       #ffffff;
  --line:       #e4ded2;
  --radius:     14px;
}

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

html { scroll-behavior: smooth; }

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  color: var(--ink);
  background: var(--cream);
  line-height: 1.65;
  font-size: 17px;
}

.wrap { max-width: 1040px; margin: 0 auto; padding: 0 24px; }

/* ── Nav ─────────────────────────────────────────────── */
header.site {
  background: var(--green-deep);
  color: #f2efe6;
}
nav {
  display: flex; align-items: center; gap: 22px;
  padding: 18px 0; flex-wrap: wrap;
}
nav .brand {
  font-weight: 800; font-size: 1.15rem; letter-spacing: .01em;
  color: #fff; text-decoration: none; margin-right: auto;
  display: flex; align-items: center; gap: 10px;
}
nav .brand .logo {
  width: 30px; height: 30px; border-radius: 8px;
  background: var(--green-mid);
  display: inline-flex; align-items: center; justify-content: center;
  font-size: 16px;
}
nav a.link {
  color: #cfdcd2; text-decoration: none; font-size: .95rem; font-weight: 600;
}
nav a.link:hover, nav a.link[aria-current="page"] { color: #fff; }

/* ── Hero ────────────────────────────────────────────── */
.hero {
  background: linear-gradient(160deg, var(--green-deep) 0%, var(--green) 90%);
  color: #f2efe6;
  padding: 72px 0 84px;
}
.hero h1 {
  font-size: clamp(2.3rem, 5.5vw, 3.6rem);
  line-height: 1.12; letter-spacing: -0.015em; color: #fff;
  max-width: 17ch;
}
.hero p.lede {
  margin-top: 20px; font-size: clamp(1.05rem, 2vw, 1.25rem);
  max-width: 56ch; color: #dbe6dd;
}
.hero .cta { margin-top: 34px; display: flex; gap: 14px; flex-wrap: wrap; }
.btn {
  display: inline-block; text-decoration: none; font-weight: 700;
  padding: 13px 24px; border-radius: 999px; font-size: 1rem;
}
.btn.primary { background: #f2efe6; color: var(--green-deep); }
.btn.primary:hover { background: #fff; }
.btn.ghost { color: #f2efe6; border: 2px solid rgba(242,239,230,.45); }
.btn.ghost:hover { border-color: #f2efe6; }

.hero .chips { margin-top: 38px; display: flex; gap: 10px; flex-wrap: wrap; }
.chip {
  font-size: .85rem; font-weight: 600; color: #eaf2ec;
  border: 1px solid rgba(242,239,230,.3); border-radius: 999px;
  padding: 6px 14px;
}

/* ── Sections ────────────────────────────────────────── */
section { padding: 64px 0; }
section.alt { background: #f2ede3; }
.kicker {
  text-transform: uppercase; letter-spacing: .12em; font-size: .8rem;
  font-weight: 800; color: var(--green-mid);
}
h2 { font-size: clamp(1.6rem, 3.4vw, 2.2rem); line-height: 1.2; margin-top: 8px; letter-spacing: -0.01em; }
.sub { color: var(--ink-soft); max-width: 62ch; margin-top: 12px; }

/* ── Usage-model steps ───────────────────────────────── */
.steps { margin-top: 40px; display: grid; gap: 18px; grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); }
.step {
  background: var(--card); border: 1px solid var(--line); border-radius: var(--radius);
  padding: 24px;
}
.step .num {
  width: 34px; height: 34px; border-radius: 50%; background: var(--green-soft);
  color: var(--green); font-weight: 800; display: flex; align-items: center;
  justify-content: center; margin-bottom: 14px;
}
.step h3 { font-size: 1.08rem; margin-bottom: 6px; }
.step p { font-size: .95rem; color: var(--ink-soft); }

/* Two-signal badges */
.signals { margin-top: 40px; display: grid; gap: 18px; grid-template-columns: repeat(auto-fit, minmax(300px, 1fr)); }
.signal {
  background: var(--card); border: 1px solid var(--line); border-radius: var(--radius);
  padding: 26px;
}
.signal .badge-row { display: flex; gap: 10px; align-items: center; margin-bottom: 14px; }
.grade {
  font-weight: 800; font-size: 1rem; border-radius: 8px; padding: 4px 12px;
}
.grade.a { background: var(--green-soft); color: var(--green); }
.grade.b { background: #f7ead8; color: var(--amber); }
.grade.c { background: #f6e0dc; color: var(--red); }
.dot { width: 14px; height: 14px; border-radius: 50%; display: inline-block; }
.dot.green { background: #2e7d5b; }
.dot.amber { background: #d98e2b; }
.dot.red   { background: #b3402f; }
.signal h3 { font-size: 1.08rem; margin-bottom: 6px; }
.signal p { font-size: .95rem; color: var(--ink-soft); }

/* Season strip */
.seasons { margin-top: 34px; display: flex; gap: 10px; flex-wrap: wrap; }
.season {
  flex: 1 1 140px; background: var(--card); border: 1px solid var(--line);
  border-radius: var(--radius); padding: 16px 18px; text-align: center;
}
.season b { display: block; color: var(--green); font-size: 1.05rem; }
.season span { font-size: .85rem; color: var(--ink-soft); }

/* ── Feature grid ────────────────────────────────────── */
.grid { margin-top: 40px; display: grid; gap: 18px; grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); }
.card {
  background: var(--card); border: 1px solid var(--line); border-radius: var(--radius);
  padding: 26px;
}
.card .icon { font-size: 1.6rem; margin-bottom: 12px; display: block; }
.card h3 { font-size: 1.1rem; margin-bottom: 8px; }
.card p { font-size: .95rem; color: var(--ink-soft); }
.card a { color: var(--green); font-weight: 700; }

/* ── Privacy band ────────────────────────────────────── */
.privacy-band { background: var(--green-deep); color: #e7efe8; }
.privacy-band h2 { color: #fff; }
.privacy-band .sub { color: #c6d5c9; }
.stats { margin-top: 40px; display: grid; gap: 18px; grid-template-columns: repeat(auto-fit, minmax(200px, 1fr)); }
.stat {
  border: 1px solid rgba(242,239,230,.22); border-radius: var(--radius);
  padding: 24px; text-align: center;
}
.stat b { display: block; font-size: 2.4rem; color: #fff; line-height: 1.1; }
.stat span { font-size: .92rem; color: #c6d5c9; }
.privacy-band .btn { margin-top: 36px; }

/* ── Article pages (usage / privacy) ─────────────────── */
.page-head { background: var(--green-deep); color: #f2efe6; padding: 52px 0 56px; }
.page-head h1 { font-size: clamp(2rem, 4.5vw, 2.8rem); color: #fff; letter-spacing: -0.01em; }
.page-head p { margin-top: 12px; color: #cfdcd2; max-width: 60ch; }

article { padding: 56px 0 72px; }
article .wrap { max-width: 800px; }
article h2 {
  margin-top: 48px; padding-top: 12px; font-size: 1.5rem;
}
article h2:first-child { margin-top: 0; }
article h3 { margin-top: 28px; font-size: 1.13rem; }
article p, article li { color: #3c4a42; }
article p { margin-top: 14px; }
article ul { margin: 14px 0 0 24px; }
article li { margin-top: 8px; }
article ul ul { margin-top: 6px; }
article strong { color: var(--ink); }
article a { color: var(--green); font-weight: 600; }
article .callout {
  margin-top: 22px; background: var(--green-soft); border-left: 4px solid var(--green-mid);
  border-radius: 0 10px 10px 0; padding: 18px 22px; font-size: .98rem;
}
article .callout.warn { background: #f9ecdd; border-left-color: var(--amber); }
article .tip { font-size: .93rem; color: var(--ink-soft); font-style: italic; }
article table {
  margin-top: 16px; border-collapse: collapse; width: 100%;
  background: var(--card); border: 1px solid var(--line); border-radius: 10px; overflow: hidden;
}
article th, article td { text-align: left; padding: 10px 16px; border-bottom: 1px solid var(--line); font-size: .95rem; }
article th { background: #f2ede3; }
article tr:last-child td { border-bottom: none; }

/* ── Footer ──────────────────────────────────────────── */
footer {
  background: #14251e; color: #9db3a4; padding: 36px 0; font-size: .9rem;
}
footer .wrap { display: flex; gap: 20px; flex-wrap: wrap; align-items: center; }
footer a { color: #cfdcd2; text-decoration: none; font-weight: 600; }
footer a:hover { color: #fff; }
footer .spacer { margin-left: auto; }

@media (max-width: 560px) {
  nav { gap: 14px; }
  .hero { padding: 52px 0 60px; }
  section { padding: 48px 0; }
}