/* ============================================================
   NutritionFlow — design tokens
   "Flow, not track." Warm paper, deep moss, one accent (rust)
   used once per page. No chart/progress-bar visual language —
   this product is not about counting, it's about noticing
   patterns over time.
   ============================================================ */

:root {
  --moss: #3f5c3f;
  --moss-soft: #6f8a63;
  --moss-pale: #b9c9ac;
  --rust: #a8552f;
  --paper: #f6f1e6;
  --paper-raised: #fffdf6;
  --paper-sunk: #efe8d8;
  --ink: #201f18;
  --ink-secondary: #6b6759;
  --border: rgba(32, 31, 24, 0.1);
  --border-strong: rgba(32, 31, 24, 0.16);
  --shadow-soft: 0 1px 2px rgba(32, 31, 24, 0.04), 0 8px 24px rgba(32, 31, 24, 0.05);
}

@media (prefers-color-scheme: dark) {
  :root {
    --moss: #9dbd91;
    --moss-soft: #7a9a6d;
    --moss-pale: #3a4632;
    --rust: #dd8f65;
    --paper: #16150f;
    --paper-raised: #201f17;
    --paper-sunk: #0f0e0a;
    --ink: #f1ece0;
    --ink-secondary: #b3ac99;
    --border: rgba(241, 236, 224, 0.12);
    --border-strong: rgba(241, 236, 224, 0.2);
    --shadow-soft: 0 1px 2px rgba(0, 0, 0, 0.3), 0 8px 24px rgba(0, 0, 0, 0.35);
  }
}

:root[data-theme="dark"] {
  --moss: #9dbd91; --moss-soft: #7a9a6d; --moss-pale: #3a4632;
  --rust: #dd8f65; --paper: #16150f; --paper-raised: #201f17; --paper-sunk: #0f0e0a;
  --ink: #f1ece0; --ink-secondary: #b3ac99;
  --border: rgba(241, 236, 224, 0.12); --border-strong: rgba(241, 236, 224, 0.2);
}
:root[data-theme="light"] {
  --moss: #3f5c3f; --moss-soft: #6f8a63; --moss-pale: #b9c9ac;
  --rust: #a8552f; --paper: #f6f1e6; --paper-raised: #fffdf6; --paper-sunk: #efe8d8;
  --ink: #201f18; --ink-secondary: #6b6759;
  --border: rgba(32, 31, 24, 0.1); --border-strong: rgba(32, 31, 24, 0.16);
}

* { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }

body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: -apple-system, BlinkMacSystemFont, "SF Pro Text", "Segoe UI", Roboto, sans-serif;
  line-height: 1.6;
  transition: background 0.2s ease, color 0.2s ease;
}

.display {
  font-family: "Fraunces", ui-serif, Georgia, serif;
  font-optical-sizing: auto;
}

::selection { background: var(--moss-pale); color: var(--ink); }

a { color: var(--moss); }

.wrap { max-width: 760px; margin: 0 auto; padding: 0 24px; }
.wrap-home { max-width: 1120px; }

/* ---------- motion & focus ---------- */

/* Progressive enhancement: .reveal only starts hidden once JS has
   confirmed it can reveal it again (html.js) — no-JS visitors and
   reduced-motion visitors always see full content immediately. */
@media (prefers-reduced-motion: no-preference) {
  html.js .reveal {
    opacity: 0;
    transform: translateY(14px);
    transition: opacity 0.6s ease, transform 0.6s ease;
  }
  html.js .reveal.in-view { opacity: 1; transform: translateY(0); }
}

:focus-visible {
  outline: 2px solid var(--moss);
  outline-offset: 3px;
  border-radius: 4px;
}

/* ---------- header ---------- */

header.site {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 30px 0 22px;
  gap: 20px;
}

.wordmark {
  display: flex;
  align-items: baseline;
  gap: 8px;
  text-decoration: none;
  color: var(--ink);
}

.wordmark .mark {
  font-family: "Fraunces", ui-serif, Georgia, serif;
  font-weight: 600;
  font-size: 20px;
  letter-spacing: -0.01em;
}

.wordmark .mark::before {
  content: "";
  display: inline-block;
  width: 9px;
  height: 9px;
  border-radius: 2px;
  background: var(--moss);
  margin-right: 8px;
  transform: translateY(-1px) rotate(-8deg);
}

nav.site {
  display: flex;
  align-items: center;
  gap: 4px;
}

nav.site a {
  color: var(--ink-secondary);
  text-decoration: none;
  font-size: 14px;
  padding: 8px 12px;
  border-radius: 8px;
}

nav.site a:hover { color: var(--ink); background: var(--paper-sunk); }

.store-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: var(--ink);
  color: var(--paper) !important;
  text-decoration: none;
  font-size: 13.5px;
  font-weight: 600;
  padding: 9px 16px 9px 14px;
  border-radius: 10px;
  margin-left: 8px;
  white-space: nowrap;
  transition: transform 0.15s ease, opacity 0.15s ease;
}
.store-badge:hover { opacity: 0.88; }
.store-badge:active { transform: scale(0.97); }
.store-badge svg { width: 15px; height: 15px; flex: none; }

/* ---------- ambient pattern mark (hero decoration) ---------- */
/* Deliberately not a chart/graph/progress ring — this is an
   organic, ambient shape. Nothing here should read as "tracking". */

.ambient {
  position: absolute;
  inset: 0;
  z-index: -1;
  overflow: hidden;
  pointer-events: none;
}

.ambient svg { position: absolute; opacity: 0.55; }
@media (prefers-color-scheme: dark) { .ambient svg { opacity: 0.35; } }

/* ---------- home hero ---------- */

.home-hero {
  position: relative;
  padding: 56px 0 8px;
  display: grid;
  grid-template-columns: 1.15fr 0.85fr;
  gap: 24px;
  align-items: start;
}

.home-hero .hero-copy { padding-top: 28px; }

.home-hero .hero-copy { position: relative; z-index: 1; }

@media (max-width: 860px) {
  .home-hero { grid-template-columns: 1fr; }
  .home-hero .hero-visual { order: -1; max-width: 220px; margin: 0 auto 8px; }
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  color: var(--moss-soft);
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  margin-bottom: 18px;
}

.eyebrow::before {
  content: "";
  width: 16px;
  height: 1px;
  background: var(--moss-soft);
}

.home-hero h1 {
  font-family: "Fraunces", ui-serif, Georgia, serif;
  font-weight: 500;
  font-size: 44px;
  line-height: 1.12;
  letter-spacing: -0.015em;
  margin: 0 0 22px;
  max-width: 13ch;
  text-wrap: balance;
}

.home-hero h1 em {
  font-style: italic;
  color: var(--moss);
}

.home-hero .lede {
  color: var(--ink-secondary);
  font-size: 17px;
  max-width: 46ch;
  margin: 0 0 34px;
}

.hero-actions {
  display: flex;
  align-items: center;
  gap: 18px;
  flex-wrap: wrap;
  margin-bottom: 8px;
}

.hero-actions .store-badge { margin-left: 0; padding: 12px 20px 12px 16px; font-size: 14.5px; border-radius: 12px; }

.hero-actions .secondary-link {
  color: var(--ink-secondary);
  text-decoration: none;
  font-size: 14.5px;
  border-bottom: 1px solid var(--border-strong);
  padding-bottom: 1px;
}
.hero-actions .secondary-link:hover { color: var(--ink); border-color: var(--ink); }

/* ---------- "what it is" section ---------- */

.principles {
  margin: 48px 0 0;
  padding-top: 40px;
  border-top: 1px solid var(--border);
}

.principles .section-label {
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--moss-soft);
  margin-bottom: 16px;
}

.principles h2 {
  font-family: "Fraunces", ui-serif, Georgia, serif;
  font-weight: 500;
  font-size: 27px;
  letter-spacing: -0.01em;
  margin: 0 0 48px;
  max-width: 20ch;
  text-wrap: balance;
}

.principle-list {
  display: flex;
  flex-direction: column;
  gap: 0;
}

.principle {
  display: grid;
  grid-template-columns: 56px 1fr;
  gap: 20px;
  padding: 28px 0;
  border-top: 1px solid var(--border);
}
.principle:last-child { border-bottom: 1px solid var(--border); }

.principle .num {
  font-family: "Fraunces", ui-serif, Georgia, serif;
  font-style: italic;
  font-size: 22px;
  color: var(--moss-pale);
}

.principle h3 {
  font-size: 16.5px;
  font-weight: 600;
  margin: 0 0 8px;
}

.principle p {
  font-size: 15px;
  color: var(--ink-secondary);
  margin: 0;
  max-width: 52ch;
}

.not-line {
  margin: 64px 0 0;
  padding: 22px 24px;
  border-radius: 14px;
  background: var(--paper-sunk);
  font-size: 14.5px;
  color: var(--ink-secondary);
  text-align: center;
}
.not-line strong { color: var(--ink); font-weight: 600; }

/* ---------- nutrient chip strip ---------- */

.chip-strip {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: 0 0 34px;
}

.chip {
  font-size: 12.5px;
  font-weight: 600;
  color: var(--moss-soft);
  background: var(--paper-raised);
  border: 1px solid var(--border);
  padding: 6px 13px;
  border-radius: 999px;
  letter-spacing: 0.01em;
}

/* ---------- phone mockup ---------- */

.phone-frame {
  position: relative;
  overflow: hidden;
  border-radius: 30px;
  background: #0a0a08;
  padding: 7px;
  box-shadow:
    0 1px 0 rgba(255,255,255,0.06) inset,
    0 24px 48px -12px rgba(20, 19, 12, 0.35),
    0 8px 20px -8px rgba(20, 19, 12, 0.25);
  aspect-ratio: 460 / 1000;
  width: 100%;
}

@media (prefers-color-scheme: dark) {
  .phone-frame {
    box-shadow:
      0 1px 0 rgba(255,255,255,0.08) inset,
      0 24px 48px -12px rgba(0, 0, 0, 0.6),
      0 8px 20px -8px rgba(0, 0, 0, 0.5);
  }
}

.phone-frame img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: top center;
  border-radius: 24px;
  display: block;
}

.phone-frame .notch {
  position: absolute;
  top: 15px;
  left: 50%;
  transform: translateX(-50%);
  width: 32%;
  height: 15px;
  background: #0a0a08;
  border-radius: 10px;
  z-index: 2;
}

.hero-visual { position: relative; }
.hero-visual .phone-frame { max-width: 260px; margin: 0 auto; }

/* ---------- showcase ("see it in action") ---------- */

.showcase {
  margin: 48px 0 0;
  padding-top: 40px;
  border-top: 1px solid var(--border);
}

.showcase .section-label {
  font-size: 13px;
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--moss-soft);
  margin-bottom: 16px;
}

.showcase h2 {
  font-family: "Fraunces", ui-serif, Georgia, serif;
  font-weight: 500;
  font-size: 27px;
  letter-spacing: -0.01em;
  margin: 0 0 48px;
  max-width: 26ch;
  text-wrap: balance;
}

.showcase-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 48px;
}

.showcase-item .phone-frame { max-width: 280px; margin: 0 auto 24px; }

.showcase-item h3 {
  font-size: 16.5px;
  font-weight: 600;
  margin: 0 0 8px;
  text-align: center;
}

.showcase-item p {
  font-size: 14.5px;
  color: var(--ink-secondary);
  text-align: center;
  max-width: 34ch;
  margin: 0 auto;
}

@media (max-width: 720px) {
  .showcase-grid { grid-template-columns: 1fr; gap: 56px; }
}

/* ---------- trust section ---------- */

.trust {
  margin: 48px 0 56px;
  padding: 32px 0;
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
}

.trust-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 32px;
}

.trust-item .glyph {
  width: 34px;
  height: 34px;
  border-radius: 9px;
  background: var(--paper-sunk);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 14px;
  color: var(--moss);
}
.trust-item .glyph svg { width: 17px; height: 17px; }

.trust-item h3 { font-size: 15px; font-weight: 600; margin: 0 0 6px; }
.trust-item p { font-size: 14px; color: var(--ink-secondary); margin: 0; }

@media (max-width: 640px) {
  .trust-grid { grid-template-columns: 1fr; gap: 28px; }
}

/* ---------- generic content (legal pages) ---------- */

main { padding-top: 8px; }

.page-head { padding: 40px 0 8px; }

h1 {
  font-family: "Fraunces", ui-serif, Georgia, serif;
  font-weight: 500;
  font-size: 34px;
  letter-spacing: -0.01em;
  margin: 0 0 6px;
}

.meta { color: var(--ink-secondary); font-size: 13.5px; margin-bottom: 28px; }

.legal-layout {
  display: grid;
  grid-template-columns: 168px 1fr;
  gap: 40px;
  align-items: start;
}

.legal-toc {
  position: sticky;
  top: 24px;
  display: flex;
  flex-direction: column;
  gap: 2px;
  padding-top: 4px;
}

.legal-toc a {
  color: var(--ink-secondary);
  text-decoration: none;
  font-size: 13px;
  line-height: 1.4;
  padding: 5px 0;
  border-left: 2px solid transparent;
  padding-left: 10px;
}
.legal-toc a:hover { color: var(--moss); border-left-color: var(--moss-pale); }

@media (max-width: 720px) {
  .legal-layout { grid-template-columns: 1fr; }
  .legal-toc { display: none; }
}

.card {
  background: var(--paper-raised);
  border: 1px solid var(--border);
  border-radius: 14px;
  padding: 22px 24px;
  margin: 4px 0 40px;
  box-shadow: var(--shadow-soft);
}

.card p { margin: 0; }

h2 {
  font-family: "Fraunces", ui-serif, Georgia, serif;
  font-weight: 500;
  font-size: 20px;
  letter-spacing: -0.005em;
  margin: 44px 0 12px;
  color: var(--ink);
  scroll-margin-top: 24px;
}

p, li { font-size: 15.5px; color: var(--ink); }
main p { color: var(--ink); }
main .lede-like { color: var(--ink-secondary); }

ul { padding-left: 20px; }
li { margin-bottom: 6px; }

/* ---------- footer ---------- */

footer.site {
  border-top: 1px solid var(--border);
  margin-top: 72px;
  padding: 22px 0 48px;
  color: var(--ink-secondary);
  font-size: 13px;
  display: flex;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 8px;
}

footer.site a { color: var(--ink-secondary); }
footer.site a:hover { color: var(--moss); }

@media (max-width: 560px) {
  .home-hero h1 { font-size: 34px; }
  .principles h2 { font-size: 23px; }
}