/* My Metabolism — mymetabolism.org */

:root {
  --charcoal-bg: #1a1c20;
  --charcoal-deep: #121419;
  --charcoal-elevated: #222529;
  --warm-white: #ebebf0;
  --secondary-text: rgba(235, 235, 240, 0.68);
  --tertiary-text: rgba(235, 235, 240, 0.42);
  --flame-yellow: #ffe32e;
  --flame-orange: #ff8c1a;
  --flame-red: #f25214;
  --golden-amber: #c7b87a;
  --supportive-green: #5ed175;
  --technical-blue: #6b94c7;
  --cool-cyan: #73b8d1;
  --wellness-purple: #9470db;
  --ember-red: #e0381a;
  --card: rgba(255, 255, 255, 0.045);
  --card-elevated: rgba(255, 255, 255, 0.075);
  --card-stroke: rgba(235, 235, 240, 0.1);
  --radius-lg: 24px;
  --radius-md: 16px;
  --radius-sm: 12px;
  --max-width: 1120px;
  --nav-height: 72px;
}

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

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: "Ubuntu", system-ui, -apple-system, sans-serif;
  font-size: 17px;
  line-height: 1.6;
  color: var(--warm-white);
  background: linear-gradient(180deg, #1c1e23 0%, var(--charcoal-bg) 40%, var(--charcoal-deep) 100%);
  min-height: 100vh;
  -webkit-font-smoothing: antialiased;
}

body::before {
  content: "";
  position: fixed;
  inset: 0;
  pointer-events: none;
  background:
    radial-gradient(ellipse 60% 50% at 88% 6%, rgba(107, 148, 199, 0.07), transparent),
    radial-gradient(ellipse 55% 45% at 12% 92%, rgba(148, 112, 219, 0.05), transparent);
  z-index: 0;
}

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

a {
  color: var(--golden-amber);
  text-decoration: none;
  transition: color 0.2s ease;
}

a:hover {
  color: var(--flame-yellow);
}

.container {
  width: min(var(--max-width), calc(100% - 40px));
  margin-inline: auto;
  position: relative;
  z-index: 1;
}

/* Navigation */

.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  background: rgba(18, 20, 25, 0.82);
  border-bottom: 1px solid var(--card-stroke);
}

.nav-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: var(--nav-height);
  gap: 24px;
}

.brand {
  display: flex;
  align-items: center;
  gap: 12px;
  color: var(--warm-white);
  font-weight: 700;
  font-size: 1.05rem;
}

.brand img {
  width: 40px;
  height: 40px;
  border-radius: 11px;
  box-shadow: 0 0 20px rgba(255, 140, 26, 0.25);
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 28px;
  list-style: none;
  margin: 0;
  padding: 0;
}

.nav-links a {
  color: var(--secondary-text);
  font-size: 0.95rem;
  font-weight: 500;
}

.nav-links a:hover {
  color: var(--warm-white);
}

.nav-toggle {
  display: none;
  background: none;
  border: none;
  color: var(--warm-white);
  cursor: pointer;
  padding: 8px;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 14px 28px;
  border-radius: 999px;
  font-family: inherit;
  font-size: 0.95rem;
  font-weight: 700;
  border: none;
  cursor: pointer;
  transition: transform 0.2s ease, box-shadow 0.2s ease, background 0.2s ease;
  text-decoration: none;
}

.btn:hover {
  transform: translateY(-1px);
}

.btn-primary {
  background: linear-gradient(135deg, var(--flame-yellow), var(--flame-orange), var(--flame-red));
  color: var(--charcoal-deep);
  box-shadow: 0 8px 32px rgba(255, 140, 26, 0.28);
}

.btn-primary:hover {
  color: var(--charcoal-deep);
  box-shadow: 0 12px 40px rgba(255, 140, 26, 0.38);
}

.btn-secondary {
  background: var(--card-elevated);
  color: var(--warm-white);
  border: 1px solid var(--card-stroke);
}

.btn-secondary:hover {
  color: var(--warm-white);
  background: rgba(255, 255, 255, 0.1);
}

/* Hero */

.hero {
  padding: 80px 0 96px;
}

.hero-grid {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 56px;
  align-items: center;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 8px 14px;
  border-radius: 999px;
  background: rgba(94, 209, 117, 0.12);
  border: 1px solid rgba(94, 209, 117, 0.25);
  color: var(--supportive-green);
  font-size: 0.85rem;
  font-weight: 600;
  margin-bottom: 20px;
}

.hero-badge::before {
  content: "";
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--supportive-green);
  box-shadow: 0 0 8px var(--supportive-green);
}

.hero h1 {
  font-size: clamp(2.4rem, 5vw, 3.6rem);
  line-height: 1.12;
  margin: 0 0 20px;
  letter-spacing: -0.02em;
}

.hero h1 .gradient-text {
  background: linear-gradient(135deg, var(--flame-yellow), var(--flame-orange));
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}

.hero-lead {
  font-size: 1.15rem;
  color: var(--secondary-text);
  margin: 0 0 32px;
  max-width: 540px;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin-bottom: 28px;
}

.hero-trust {
  display: flex;
  flex-wrap: wrap;
  gap: 20px;
  color: var(--tertiary-text);
  font-size: 0.88rem;
}

.hero-trust span {
  display: inline-flex;
  align-items: center;
  gap: 6px;
}

.hero-visual {
  position: relative;
}

.phone-mock {
  background: var(--card-elevated);
  border: 1px solid var(--card-stroke);
  border-radius: 32px;
  padding: 20px;
  box-shadow:
    0 24px 80px rgba(0, 0, 0, 0.45),
    0 0 60px rgba(255, 140, 26, 0.08);
}

.phone-screen {
  background: var(--charcoal-deep);
  border-radius: 20px;
  padding: 24px;
  min-height: 420px;
  border: 1px solid rgba(255, 255, 255, 0.06);
}

.mock-graph {
  height: 140px;
  margin-bottom: 20px;
  position: relative;
  overflow: hidden;
  border-radius: var(--radius-md);
  background: rgba(255, 255, 255, 0.03);
}

.mock-graph svg {
  width: 100%;
  height: 100%;
}

.mock-stats {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 10px;
  margin-bottom: 16px;
}

.mock-stat {
  background: var(--card);
  border: 1px solid var(--card-stroke);
  border-radius: var(--radius-sm);
  padding: 12px;
  text-align: center;
}

.mock-stat .value {
  font-size: 1.2rem;
  font-weight: 700;
  color: var(--golden-amber);
}

.mock-stat .label {
  font-size: 0.72rem;
  color: var(--tertiary-text);
  text-transform: uppercase;
  letter-spacing: 0.04em;
}

.mock-entry {
  background: var(--card);
  border: 1px solid var(--card-stroke);
  border-radius: var(--radius-sm);
  padding: 14px;
  display: flex;
  gap: 12px;
  align-items: center;
}

.mock-entry-icon {
  width: 36px;
  height: 36px;
  border-radius: 10px;
  background: linear-gradient(135deg, rgba(255, 227, 46, 0.2), rgba(255, 140, 26, 0.2));
  display: grid;
  place-items: center;
  font-size: 1.1rem;
}

.mock-entry-text .title {
  font-size: 0.9rem;
  font-weight: 600;
}

.mock-entry-text .sub {
  font-size: 0.78rem;
  color: var(--secondary-text);
}

/* Sections */

section {
  padding: 72px 0;
}

.section-label {
  display: inline-block;
  font-size: 0.78rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--golden-amber);
  margin-bottom: 12px;
}

.section-header {
  max-width: 640px;
  margin-bottom: 48px;
}

.section-header h2 {
  font-size: clamp(1.8rem, 3.5vw, 2.4rem);
  margin: 0 0 14px;
  letter-spacing: -0.02em;
}

.section-header p {
  margin: 0;
  color: var(--secondary-text);
  font-size: 1.05rem;
}

/* Feature grid */

.features-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}

.feature-card {
  background: var(--card);
  border: 1px solid var(--card-stroke);
  border-radius: var(--radius-lg);
  padding: 28px;
  transition: border-color 0.2s ease, transform 0.2s ease;
}

.feature-card:hover {
  border-color: rgba(199, 184, 122, 0.25);
  transform: translateY(-2px);
}

.feature-icon {
  width: 48px;
  height: 48px;
  border-radius: 14px;
  display: grid;
  place-items: center;
  font-size: 1.4rem;
  margin-bottom: 18px;
}

.feature-icon.gold { background: rgba(199, 184, 122, 0.15); }
.feature-icon.green { background: rgba(94, 209, 117, 0.15); }
.feature-icon.blue { background: rgba(107, 148, 199, 0.15); }
.feature-icon.cyan { background: rgba(115, 184, 209, 0.15); }
.feature-icon.purple { background: rgba(148, 112, 219, 0.15); }
.feature-icon.orange { background: rgba(255, 140, 26, 0.15); }

.feature-card h3 {
  margin: 0 0 10px;
  font-size: 1.1rem;
}

.feature-card p {
  margin: 0;
  color: var(--secondary-text);
  font-size: 0.95rem;
}

/* How it works */

.steps {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
  counter-reset: step;
}

.step {
  position: relative;
  padding-top: 8px;
}

.step-num {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--flame-yellow), var(--flame-orange));
  color: var(--charcoal-deep);
  font-weight: 700;
  font-size: 0.95rem;
  display: grid;
  place-items: center;
  margin-bottom: 16px;
}

.step h3 {
  margin: 0 0 8px;
  font-size: 1rem;
}

.step p {
  margin: 0;
  color: var(--secondary-text);
  font-size: 0.92rem;
}

/* Privacy highlight */

.privacy-banner {
  background: linear-gradient(135deg, rgba(94, 209, 117, 0.08), rgba(115, 184, 209, 0.06));
  border: 1px solid rgba(94, 209, 117, 0.22);
  border-radius: var(--radius-lg);
  padding: 48px;
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 32px;
  align-items: center;
}

.privacy-banner h2 {
  margin: 0 0 12px;
  font-size: 1.8rem;
}

.privacy-banner p {
  margin: 0;
  color: var(--secondary-text);
  max-width: 560px;
}

.privacy-points {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 16px;
  margin-top: 28px;
}

.privacy-point {
  display: flex;
  gap: 10px;
  align-items: flex-start;
  font-size: 0.92rem;
}

.privacy-point .check {
  color: var(--supportive-green);
  font-weight: 700;
  flex-shrink: 0;
}

/* CTA */

.cta-section {
  text-align: center;
  padding: 96px 0;
}

.cta-box {
  background: var(--card-elevated);
  border: 1px solid var(--card-stroke);
  border-radius: var(--radius-lg);
  padding: 64px 40px;
  max-width: 720px;
  margin-inline: auto;
}

.cta-box h2 {
  margin: 0 0 14px;
  font-size: 2rem;
}

.cta-box p {
  margin: 0 0 28px;
  color: var(--secondary-text);
}

.disclaimer {
  margin-top: 24px;
  font-size: 0.82rem;
  color: var(--tertiary-text);
  max-width: 520px;
  margin-inline: auto;
}

/* Footer */

.site-footer {
  border-top: 1px solid var(--card-stroke);
  padding: 40px 0;
  margin-top: 40px;
}

.footer-inner {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  align-items: center;
  gap: 20px;
}

.footer-links {
  display: flex;
  gap: 24px;
  list-style: none;
  margin: 0;
  padding: 0;
}

.footer-links a {
  color: var(--secondary-text);
  font-size: 0.9rem;
}

.footer-copy {
  color: var(--tertiary-text);
  font-size: 0.85rem;
  margin: 0;
}

/* Privacy page */

.page-hero {
  padding: 56px 0 40px;
}

.page-hero h1 {
  font-size: clamp(2rem, 4vw, 2.8rem);
  margin: 0 0 12px;
}

.page-hero .updated {
  color: var(--tertiary-text);
  font-size: 0.9rem;
  margin: 0;
}

.legal-content {
  max-width: 760px;
  padding-bottom: 80px;
}

.legal-content h2 {
  font-size: 1.35rem;
  margin: 40px 0 12px;
  color: var(--warm-white);
}

.legal-content h3 {
  font-size: 1.05rem;
  margin: 24px 0 8px;
  color: var(--golden-amber);
}

.legal-content p,
.legal-content li {
  color: var(--secondary-text);
  font-size: 0.98rem;
}

.legal-content ul {
  padding-left: 1.4rem;
  margin: 0 0 16px;
}

.legal-content li {
  margin-bottom: 8px;
}

.legal-highlight {
  background: rgba(94, 209, 117, 0.08);
  border: 1px solid rgba(94, 209, 117, 0.2);
  border-radius: var(--radius-md);
  padding: 24px;
  margin: 28px 0;
}

.legal-highlight p {
  margin: 0;
  color: var(--warm-white);
  font-weight: 500;
}

.legal-highlight strong {
  color: var(--supportive-green);
}

/* Responsive */

@media (max-width: 960px) {
  .hero-grid {
    grid-template-columns: 1fr;
    gap: 40px;
  }

  .hero-visual {
    order: -1;
    max-width: 380px;
    margin-inline: auto;
  }

  .features-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .steps {
    grid-template-columns: repeat(2, 1fr);
  }

  .privacy-banner {
    grid-template-columns: 1fr;
    padding: 32px;
  }
}

@media (max-width: 640px) {
  .nav-links {
    display: none;
    position: absolute;
    top: var(--nav-height);
    left: 0;
    right: 0;
    flex-direction: column;
    background: rgba(18, 20, 25, 0.96);
    padding: 20px;
    border-bottom: 1px solid var(--card-stroke);
    gap: 16px;
  }

  .nav-links.open {
    display: flex;
  }

  .nav-toggle {
    display: block;
  }

  .nav-cta-desktop {
    display: none;
  }

  .features-grid,
  .steps,
  .privacy-points {
    grid-template-columns: 1fr;
  }

  .hero {
    padding-top: 48px;
  }

  .cta-box {
    padding: 40px 24px;
  }
}

@media (min-width: 641px) {
  .nav-cta-mobile {
    display: none;
  }
}