/* CarboLens site: the app's light theme (tailwind.config.js): white cards on a soft blue-white background. */
:root {
  --brand: #1a8cff;
  --brand-strong: #0a6cff;
  --brand-soft: #e7f2ff;
  --bg: #f7fafe;
  --bg-deep: #e8f0fa;
  --card: #ffffff;
  --line: #dce3ec;
  --ink: #0b1424;
  --muted: #5b6b80;
  --carbs: #f5a524;
  --protein: #ff6b5e;
  --fat: #a78bfa;
  --shadow: 0 1px 2px rgba(11, 20, 36, 0.04), 0 8px 24px rgba(11, 20, 36, 0.06);
  color-scheme: light;
}

* {
  box-sizing: border-box;
}

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

body {
  margin: 0;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  background: var(--bg);
  color: var(--ink);
  font-family: -apple-system, BlinkMacSystemFont, 'SF Pro Text', 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
  font-size: 17px;
  line-height: 1.6;
}

img {
  max-width: 100%;
  height: auto;
}

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

.container {
  width: 100%;
  max-width: 1120px;
  margin: 0 auto;
  padding: 0 20px;
}

/* ---------- Navbar ---------- */
.nav {
  position: sticky;
  top: 0;
  z-index: 10;
  background: rgba(247, 250, 254, 0.82);
  backdrop-filter: saturate(160%) blur(14px);
  -webkit-backdrop-filter: saturate(160%) blur(14px);
  border-bottom: 1px solid var(--line);
}

.nav .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  height: 64px;
}

.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  color: var(--ink);
  font-weight: 700;
  font-size: 19px;
  text-decoration: none;
}

.brand img {
  width: 32px;
  height: 32px;
  border-radius: 9px;
}

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

.nav-links a {
  color: var(--muted);
  font-size: 15px;
  font-weight: 500;
  text-decoration: none;
  padding: 8px 12px;
  border-radius: 999px;
}

.nav-links a:hover,
.nav-links a[aria-current='page'] {
  color: var(--ink);
  background: var(--brand-soft);
}

.nav-links .section-link {
  display: inline-block;
}

/* Language switcher (no JS: a <details> dropdown of links to the same page in each language) */
.lang {
  position: relative;
  margin-left: 4px;
}

.lang summary {
  list-style: none;
  cursor: pointer;
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 7px 12px;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: var(--card);
  color: var(--ink);
  font-size: 14px;
  font-weight: 600;
}

.lang summary::-webkit-details-marker {
  display: none;
}

.lang summary::before {
  content: '';
  width: 16px;
  height: 16px;
  background: no-repeat center / contain
    url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%235B6B80' stroke-width='2'%3E%3Ccircle cx='12' cy='12' r='10'/%3E%3Cpath d='M2 12h20M12 2a15 15 0 0 1 0 20M12 2a15 15 0 0 0 0 20'/%3E%3C/svg%3E");
}

.lang ul {
  position: absolute;
  right: 0;
  top: calc(100% + 8px);
  min-width: 170px;
  margin: 0;
  padding: 6px;
  list-style: none;
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 16px;
  box-shadow: var(--shadow);
}

.lang li a {
  display: block;
  padding: 8px 12px;
  border-radius: 10px;
  color: var(--ink);
  font-size: 15px;
  text-decoration: none;
}

.lang li a:hover {
  background: var(--brand-soft);
}

.lang li a[aria-current='true'] {
  color: var(--brand);
  font-weight: 600;
}

main {
  flex: 1;
}

/* ---------- Shared bits ---------- */
.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 14px;
  border-radius: 999px;
  background: var(--brand-soft);
  color: var(--brand-strong);
  font-size: 14px;
  font-weight: 600;
}

.section {
  padding: 88px 0;
}

.section-head {
  text-align: center;
  max-width: 620px;
  margin: 0 auto 44px;
}

.section-head h2 {
  font-size: clamp(28px, 4.5vw, 40px);
  line-height: 1.15;
  letter-spacing: -0.02em;
  margin: 14px 0 10px;
}

.section-head p {
  color: var(--muted);
  margin: 0;
}

.store-row {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

/* "Coming soon" store pills: no official badges until the app is live. */
.store {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 10px 18px;
  border-radius: 14px;
  background: var(--ink);
  color: #fff;
  text-decoration: none;
  line-height: 1.2;
}

.store small {
  display: block;
  font-size: 11px;
  opacity: 0.7;
}

.store strong {
  font-size: 16px;
}

.store svg {
  width: 22px;
  height: 22px;
  fill: currentColor;
}

/* ---------- Hero ---------- */
.hero {
  background: radial-gradient(1000px 520px at 78% 30%, #d6e9ff 0%, rgba(214, 233, 255, 0) 70%),
    linear-gradient(180deg, var(--bg) 0%, #ffffff 100%);
  overflow: hidden;
}

.hero .container {
  display: grid;
  grid-template-columns: 1.05fr 1fr;
  align-items: center;
  gap: 32px;
  padding-top: 56px;
  padding-bottom: 40px;
}

.hero h1 {
  font-size: clamp(38px, 6vw, 62px);
  line-height: 1.05;
  letter-spacing: -0.03em;
  margin: 18px 0 18px;
}

.hero h1,
.section-head h2,
.band h2,
.cta h2 {
  text-wrap: balance;
}

.hero h1 span {
  color: var(--brand);
}

.hero .lead {
  color: var(--muted);
  font-size: 19px;
  max-width: 500px;
  margin: 0 0 28px;
}

.hero-chips {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 26px;
  color: var(--muted);
  font-size: 14px;
}

.hero-chips span {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 6px 12px;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: var(--card);
}

.dot {
  display: inline-block;
  width: 8px;
  height: 8px;
  border-radius: 50%;
}

.hero-art {
  position: relative;
  justify-self: center;
}

.hero-art img {
  width: min(520px, 100%);
  filter: drop-shadow(0 30px 50px rgba(10, 108, 255, 0.18));
}

/* ---------- Features ---------- */
.features {
  background: #ffffff;
}

.features-grid {
  display: grid;
  grid-template-columns: 0.9fr 1.1fr;
  gap: 48px;
  align-items: center;
}

.features-grid .phone {
  justify-self: center;
  width: min(330px, 80vw);
  filter: drop-shadow(0 24px 40px rgba(11, 20, 36, 0.14));
}

.feature-list {
  display: grid;
  gap: 14px;
}

.feature {
  display: flex;
  gap: 16px;
  padding: 20px;
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 22px;
}

.feature.highlight {
  border-color: var(--brand);
  box-shadow: 0 0 0 4px var(--brand-soft);
}

.feature .icon {
  flex: none;
  display: grid;
  place-items: center;
  width: 44px;
  height: 44px;
  border-radius: 14px;
  font-size: 22px;
  background: var(--brand-soft);
}

.feature h3 {
  margin: 0 0 4px;
  font-size: 18px;
}

.feature p {
  margin: 0;
  color: var(--muted);
  font-size: 15px;
}

/* ---------- Steps ---------- */
.steps {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 16px;
}

.step {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 24px;
  padding: 26px;
  box-shadow: var(--shadow);
}

.step .num {
  display: grid;
  place-items: center;
  width: 36px;
  height: 36px;
  border-radius: 50%;
  background: linear-gradient(135deg, #2e9bff, var(--brand-strong));
  color: #fff;
  font-weight: 700;
  margin-bottom: 16px;
}

.step h3 {
  margin: 0 0 6px;
  font-size: 19px;
}

.step p {
  margin: 0;
  color: var(--muted);
  font-size: 15px;
}

/* ---------- Highlight band ---------- */
.band {
  background: linear-gradient(180deg, #ffffff 0%, var(--bg-deep) 100%);
}

.band-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 40px;
  align-items: center;
}

.band h2 {
  font-size: clamp(28px, 4.5vw, 40px);
  line-height: 1.15;
  letter-spacing: -0.02em;
  margin: 14px 0 12px;
}

.band p {
  color: var(--muted);
}

.macro-cards {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 12px;
}

.macro {
  text-align: center;
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 22px;
  padding: 22px 10px;
  box-shadow: var(--shadow);
}

.macro .ring {
  width: 56px;
  height: 56px;
  margin: 0 auto 12px;
  border-radius: 50%;
  border: 6px solid var(--line);
}

.macro strong {
  display: block;
  font-size: 20px;
}

.macro span {
  color: var(--muted);
  font-size: 14px;
}

/* ---------- FAQ ---------- */
.faq {
  max-width: 760px;
  margin: 0 auto;
  display: grid;
  gap: 10px;
}

.faq details {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 18px;
  padding: 0 20px;
}

.faq summary {
  cursor: pointer;
  list-style: none;
  padding: 18px 0;
  font-weight: 600;
  display: flex;
  justify-content: space-between;
  gap: 16px;
}

.faq summary::-webkit-details-marker {
  display: none;
}

.faq summary::after {
  content: '+';
  color: var(--brand);
  font-size: 22px;
  line-height: 1;
}

.faq details[open] summary::after {
  content: '–';
}

.faq details p {
  margin: 0 0 18px;
  color: var(--muted);
}

/* ---------- CTA ---------- */
.cta {
  text-align: center;
  border-radius: 32px;
  padding: 56px 24px;
  margin: 0 auto 88px;
  background: radial-gradient(600px 260px at 50% 0%, #d6e9ff, transparent), var(--card);
  border: 1px solid var(--line);
  box-shadow: var(--shadow);
}

.cta img {
  width: 76px;
  height: 76px;
  border-radius: 20px;
  box-shadow: 0 10px 30px rgba(26, 140, 255, 0.3);
}

.cta h2 {
  font-size: clamp(26px, 4vw, 36px);
  letter-spacing: -0.02em;
  margin: 18px 0 8px;
}

.cta p {
  color: var(--muted);
  margin: 0 0 24px;
}

.cta .store-row {
  justify-content: center;
}

/* ---------- Legal documents ---------- */
.doc {
  max-width: 820px;
  padding: 48px 20px 72px;
}

.doc h1 {
  font-size: clamp(30px, 6vw, 42px);
  line-height: 1.15;
  letter-spacing: -0.02em;
  margin: 0 0 6px;
}

.doc .updated {
  color: var(--muted);
  margin: 0 0 28px;
}

.doc .summary {
  background: var(--card);
  border: 1px solid var(--line);
  border-left: 4px solid var(--brand);
  border-radius: 18px;
  padding: 16px 20px;
  margin-bottom: 32px;
}

.doc .summary p {
  margin: 0;
}

.doc h2 {
  font-size: 22px;
  margin: 40px 0 10px;
  padding-top: 8px;
  scroll-margin-top: 80px;
}

.doc h3 {
  font-size: 18px;
  margin: 24px 0 6px;
}

.doc p,
.doc li {
  color: #24324a;
}

.doc ul {
  padding-left: 22px;
}

.doc li {
  margin: 6px 0;
}

.toc {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: 18px;
  padding: 14px 20px;
}

.toc ol {
  margin: 0;
  padding-left: 22px;
  columns: 2;
  column-gap: 32px;
}

.toc li {
  margin: 4px 0;
  break-inside: avoid;
}

.toc a {
  text-decoration: none;
}

.table-wrap {
  overflow-x: auto;
  border: 1px solid var(--line);
  border-radius: 18px;
}

table {
  width: 100%;
  border-collapse: collapse;
  font-size: 15px;
  background: var(--card);
}

th,
td {
  text-align: left;
  vertical-align: top;
  padding: 12px 14px;
  border-bottom: 1px solid var(--line);
}

tr:last-child td {
  border-bottom: 0;
}

th {
  color: var(--muted);
  font-weight: 600;
}

.placeholder {
  color: #c27c00;
  font-weight: 600;
}

.caps {
  text-transform: uppercase;
  font-size: 15px;
}

/* ---------- Footer ---------- */
.footer {
  background: var(--card);
  border-top: 1px solid var(--line);
  padding: 44px 0 28px;
  color: var(--muted);
  font-size: 14px;
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr;
  gap: 28px;
}

.footer h4 {
  color: var(--ink);
  font-size: 14px;
  margin: 0 0 10px;
}

.footer ul {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 6px;
}

.footer a {
  color: var(--muted);
  text-decoration: none;
}

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

.footer .tagline {
  margin: 10px 0 0;
  max-width: 300px;
}

.footer .copy {
  border-top: 1px solid var(--line);
  margin-top: 28px;
  padding-top: 18px;
}

/* ---------- Responsive ---------- */
@media (max-width: 880px) {
  .hero .container,
  .features-grid,
  .band-grid {
    grid-template-columns: 1fr;
  }

  .hero .container {
    text-align: center;
    padding-top: 40px;
  }

  .hero .lead {
    margin-left: auto;
    margin-right: auto;
  }

  .hero .store-row,
  .hero-chips {
    justify-content: center;
  }

  .steps {
    grid-template-columns: 1fr;
  }

  .section {
    padding: 64px 0;
  }

  .nav-links .section-link {
    display: none;
  }
}

@media (max-width: 560px) {
  .nav-links a {
    padding: 8px;
    font-size: 14px;
  }

  .brand span {
    display: none;
  }

  .toc ol {
    columns: 1;
  }

  .footer-grid {
    grid-template-columns: 1fr 1fr;
  }

  .footer-grid > :first-child {
    grid-column: 1 / -1;
  }

  .macro-cards {
    gap: 8px;
  }
}