/* MuscleScreen Design System - mapped from DesignSystem.swift */
/* Taste-skill aligned: no Inter, no pure black, no neon glows */

@import url('https://fonts.googleapis.com/css2?family=Outfit:wght@400;500;600;700&display=swap');

:root {
  /* Core palette - exact RGB from DesignSystem.swift */
  --ms-background: rgb(249, 249, 251);
  --ms-card-background: #ffffff;
  --ms-surface: rgb(242, 242, 245);
  --ms-primary: rgb(17, 17, 20);
  --ms-secondary: rgb(102, 102, 112);
  --ms-tertiary: rgb(153, 153, 163);
  --ms-accent: rgb(46, 46, 51);
  --ms-accent-soft: rgba(46, 46, 51, 0.1);
  --ms-destructive: rgb(230, 64, 64);
  --ms-warning: rgb(242, 166, 38);

  /* Avatar state colors */
  --ms-beast: rgb(217, 184, 51);
  --ms-strong: rgb(56, 184, 120);
  --ms-normal: rgb(89, 140, 217);
  --ms-soft: rgb(230, 166, 77);
  --ms-weak: rgb(217, 89, 77);
  --ms-critical: rgb(140, 140, 148);

  /* Spacing - from MSSpacing */
  --space-xs: 4px;
  --space-sm: 8px;
  --space-md: 16px;
  --space-lg: 24px;
  --space-xl: 32px;
  --space-xxl: 48px;

  /* Radius - from MSRadius */
  --radius-sm: 10px;
  --radius-md: 16px;
  --radius-lg: 24px;
  --radius-xl: 32px;
}

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

html {
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  scroll-behavior: smooth;
}

body {
  font-family: 'Outfit', system-ui, -apple-system, sans-serif;
  background-color: var(--ms-background);
  color: var(--ms-primary);
  line-height: 1.6;
  min-height: 100dvh;
}

/* ─── Typography ─── */
h1 {
  font-size: clamp(2.2rem, 5vw, 3.4rem);
  font-weight: 700;
  letter-spacing: -0.03em;
  line-height: 1.1;
}

h2 {
  font-size: clamp(1.5rem, 3vw, 2rem);
  font-weight: 600;
  letter-spacing: -0.02em;
  line-height: 1.2;
}

h3 {
  font-size: 1.25rem;
  font-weight: 600;
  line-height: 1.3;
}

p {
  color: var(--ms-secondary);
  line-height: 1.7;
}

a {
  color: var(--ms-accent);
  text-decoration: none;
  transition: opacity 0.2s ease;
}

a:hover {
  opacity: 0.7;
}

/* ─── Layout ─── */
.container {
  max-width: 1120px;
  margin: 0 auto;
  padding: 0 var(--space-lg);
}

.container--narrow {
  max-width: 780px;
  margin: 0 auto;
  padding: 0 var(--space-lg);
}

/* ─── Navigation ─── */
.nav {
  position: sticky;
  top: 0;
  z-index: 10;
  background: rgba(249, 249, 251, 0.85);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--ms-surface);
  padding: var(--space-md) 0;
}

.nav__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.nav__brand {
  display: flex;
  align-items: center;
  line-height: 0;
}

.nav__brand img {
  height: 60px;
  width: auto;
  display: block;
  transition: height 0.3s ease;
}

.nav--scrolled .nav__brand img {
  height: 28px;
}

.nav__links {
  display: flex;
  gap: var(--space-lg);
  list-style: none;
}

.nav__links a {
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--ms-secondary);
  transition: color 0.2s ease;
}

.nav__links a:hover {
  color: var(--ms-primary);
  opacity: 1;
}

/* ─── Hamburger (hidden on desktop) ─── */
.nav__hamburger {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 40px;
  height: 40px;
  background: var(--ms-surface);
  border: none;
  border-radius: 50%;
  cursor: pointer;
  padding: 10px;
  transition: background 0.2s ease;
}

.nav__hamburger:hover {
  background: var(--ms-accent-soft);
}

.nav__hamburger span {
  display: block;
  width: 18px;
  height: 2px;
  background: var(--ms-primary);
  border-radius: 2px;
  transition: transform 0.2s ease, opacity 0.2s ease;
}

/* ─── Mobile Menu (hidden by default) ─── */
.nav__mobile {
  display: none;
  overflow: hidden;
  max-height: 0;
  transition: max-height 0.35s ease, padding 0.35s ease;
  padding: 0 var(--space-lg);
}

.nav__mobile--open {
  max-height: 400px;
  padding: var(--space-md) var(--space-lg) var(--space-lg);
}

.nav__mobile-card {
  background: var(--ms-card-background);
  border-radius: var(--radius-lg);
  padding: var(--space-md);
  box-shadow: 0 8px 20px rgba(0, 0, 0, 0.04);
}

.nav__mobile-row {
  display: flex;
  align-items: center;
  gap: var(--space-md);
  padding: var(--space-md) var(--space-sm);
  color: var(--ms-primary);
  font-size: 0.95rem;
  font-weight: 500;
  text-decoration: none;
  transition: opacity 0.2s ease;
}

.nav__mobile-row:hover {
  opacity: 0.7;
}

.nav__mobile-row img {
  margin: 0 auto;
}

.nav__mobile-icon {
  width: 28px;
  height: 28px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--ms-tertiary);
}

.nav__mobile-chevron {
  margin-left: auto;
  color: var(--ms-tertiary);
}

.nav__mobile-divider {
  height: 1px;
  background: var(--ms-surface);
  margin: 0 var(--space-sm);
}

/* ─── Hero ─── */
.hero {
  padding: clamp(80px, 12vh, 140px) 0 clamp(60px, 8vh, 100px);
}

.hero__layout {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-xxl);
  align-items: center;
}

.hero__tagline {
  font-size: 0.85rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--ms-strong);
  margin-bottom: var(--space-md);
}

.hero__title {
  margin-bottom: var(--space-lg);
}

.hero__subtitle {
  font-size: 1.1rem;
  color: var(--ms-secondary);
  margin-bottom: var(--space-xl);
  max-width: 480px;
}

/* Rotating word animation */
.hero__rotating-word {
  display: inline-block;
  color: var(--ms-strong);
  transition: opacity 0.4s ease, transform 0.4s ease;
}

.hero__rotating-word--out {
  opacity: 0;
  transform: translateY(8px);
}

.hero__visual {
  display: flex;
  justify-content: center;
  align-items: center;
}

.hero__avatar-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-sm);
}

.avatar-state {
  width: 88px;
  height: 88px;
  border-radius: var(--radius-lg);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.65rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: white;
  transition: transform 0.3s cubic-bezier(0.34, 1.56, 0.64, 1);
}

.avatar-state:hover {
  transform: scale(1.06) translateY(-2px);
}

.avatar-state--beast { background: var(--ms-beast); }
.avatar-state--strong { background: var(--ms-strong); }
.avatar-state--normal { background: var(--ms-normal); }
.avatar-state--soft { background: var(--ms-soft); }
.avatar-state--weak { background: var(--ms-weak); }
.avatar-state--critical { background: var(--ms-critical); }

/* ─── Badge / CTA Button ─── */
.btn-primary {
  display: inline-flex;
  align-items: center;
  gap: var(--space-sm);
  background: var(--ms-accent);
  color: white;
  font-family: inherit;
  font-size: 1rem;
  font-weight: 600;
  padding: 18px 32px;
  border: none;
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: transform 0.2s ease, opacity 0.2s ease;
}

.btn-primary:hover {
  opacity: 0.85;
  transform: translateY(-1px);
  color: white;
}

.btn-secondary {
  display: inline-flex;
  align-items: center;
  gap: var(--space-sm);
  background: var(--ms-accent-soft);
  color: var(--ms-accent);
  font-family: inherit;
  font-size: 0.95rem;
  font-weight: 600;
  padding: 14px 28px;
  border: none;
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: transform 0.2s ease, background 0.2s ease;
}

.btn-secondary:hover {
  background: rgba(46, 46, 51, 0.15);
  transform: translateY(-1px);
}

/* ─── Store Badges ─── */
.hero__actions {
  display: flex;
  gap: var(--space-md);
  align-items: center;
  flex-wrap: wrap;
}

.store-badge {
  display: inline-block;
  transition: transform 0.2s ease, opacity 0.2s ease;
  line-height: 0;
}

.store-badge img {
  height: 50px;
  width: auto;
  display: block;
}

.store-badge:hover {
  transform: translateY(-2px);
  opacity: 0.9;
}

.store-badge--coming-soon {
  display: inline-flex;
  flex-direction: column;
  align-items: center;
  opacity: 0.45;
  cursor: default;
  filter: grayscale(100%);
}

.store-badge--coming-soon:hover {
  transform: none;
  opacity: 0.45;
}

.coming-soon-label {
  display: block;
  margin-top: var(--space-sm);
  font-size: 0.7rem;
  font-weight: 500;
  color: var(--ms-tertiary);
  white-space: nowrap;
}

.download-cta .coming-soon-label {
  color: rgba(255, 255, 255, 0.4);
}

/* ─── Download CTA Section ─── */
.download-cta {
  padding: clamp(60px, 8vh, 100px) 0;
}

.download-cta__inner {
  position: relative;
  text-align: center;
  background: linear-gradient(145deg, rgb(17, 17, 20), rgb(36, 36, 42));
  padding: var(--space-xxl) var(--space-xl);
  border-radius: var(--radius-xl);
  box-shadow: 0 12px 40px rgba(0, 0, 0, 0.15);
  overflow: hidden;
}

.download-cta__inner::after {
  content: '';
  position: absolute;
  right: -40px;
  bottom: -40px;
  width: 260px;
  height: 260px;
  background: url('/images/logos/muscle-icon-white.png') no-repeat center / contain;
  opacity: 0.04;
  pointer-events: none;
}

.download-cta__inner h2 {
  margin-bottom: var(--space-md);
  color: #fff;
}

.download-cta__inner p {
  max-width: 560px;
  margin: 0 auto var(--space-xl);
  font-size: 1.05rem;
  color: rgba(255, 255, 255, 0.65);
  line-height: 1.8;
}

.download-cta__badges {
  display: flex;
  gap: var(--space-md);
  justify-content: center;
  align-items: center;
  flex-wrap: wrap;
}

/* ─── Cards - matches MSCardStyle ─── */
.card {
  background: var(--ms-card-background);
  padding: var(--space-lg);
  border-radius: var(--radius-lg);
  box-shadow: 0 8px 20px rgba(0, 0, 0, 0.04);
  transition: transform 0.3s cubic-bezier(0.34, 1.56, 0.64, 1), box-shadow 0.3s ease;
}

.card:hover {
  transform: translateY(-3px);
  box-shadow: 0 12px 32px rgba(0, 0, 0, 0.06);
}

/* ─── Features Section ─── */
.features {
  padding: clamp(60px, 8vh, 100px) 0;
}

.features__header {
  margin-bottom: var(--space-xxl);
}

.features__grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--space-lg);
}

.feature__icon {
  width: 48px;
  height: 48px;
  border-radius: var(--radius-sm);
  background: var(--ms-accent-soft);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: var(--space-md);
  font-size: 1.4rem;
}

.feature__title {
  margin-bottom: var(--space-sm);
}

/* ─── How It Works ─── */
.how-it-works {
  padding: clamp(60px, 8vh, 100px) 0;
}

.steps {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-lg);
  margin-top: var(--space-xxl);
}

.step__number {
  font-size: 3rem;
  font-weight: 700;
  letter-spacing: -0.04em;
  color: var(--ms-surface);
  line-height: 1;
  margin-bottom: var(--space-md);
}

.step__title {
  margin-bottom: var(--space-sm);
}

/* ─── Exercises Section ─── */
.exercises {
  padding: clamp(60px, 8vh, 100px) 0;
}

.exercises__header {
  text-align: center;
  margin-bottom: var(--space-xxl);
}

.exercises__header p {
  margin-top: var(--space-md);
  font-size: 1.05rem;
}

.exercises__grid {
  display: flex;
  justify-content: center;
  gap: var(--space-lg);
  flex-wrap: wrap;
}

.exercise-icon-card {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-sm);
  transition: transform 0.3s cubic-bezier(0.34, 1.56, 0.64, 1);
}

.exercise-icon-card:hover {
  transform: translateY(-4px);
}

.exercise-icon-card__square {
  width: 100px;
  height: 100px;
  border-radius: var(--radius-lg);
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--ms-card-background);
  box-shadow: 0 4px 16px rgba(0, 0, 0, 0.06);
}

.exercise-icon-card__square img {
  width: 40px;
  height: 40px;
  opacity: 0.7;
}

.exercise-icon-card span {
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--ms-secondary);
}

/* ─── Footer ─── */
.footer {
  border-top: 1px solid var(--ms-surface);
  padding: var(--space-xxl) 0 var(--space-xl);
  margin-top: clamp(60px, 8vh, 100px);
}

.footer__inner {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: var(--space-xl);
}

.footer__brand-block {
  display: flex;
  flex-direction: column;
  gap: var(--space-sm);
}

.footer__brand-icon {
  width: 36px;
  height: auto;
  opacity: 0.7;
}

.footer__brand-wordmark {
  width: 120px;
  height: auto;
}

.footer__note {
  font-size: 0.85rem;
  color: var(--ms-tertiary);
}

.footer__links {
  display: flex;
  gap: var(--space-xxl);
}

.footer__col h4 {
  font-size: 0.8rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--ms-tertiary);
  margin-bottom: var(--space-md);
}

.footer__col ul {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: var(--space-sm);
}

.footer__col a {
  font-size: 0.9rem;
  color: var(--ms-secondary);
}

.footer__col a:hover {
  color: var(--ms-primary);
  opacity: 1;
}

.footer__bottom {
  margin-top: var(--space-xxl);
  padding-top: var(--space-lg);
  border-top: 1px solid var(--ms-surface);
  font-size: 0.8rem;
  color: var(--ms-tertiary);
}

/* ─── Legal Pages ─── */
.legal {
  padding: clamp(60px, 8vh, 100px) 0;
}

.legal h1 {
  margin-bottom: var(--space-sm);
}

.legal__updated {
  font-size: 0.85rem;
  color: var(--ms-tertiary);
  margin-bottom: var(--space-xxl);
}

.legal h2 {
  font-size: 1.3rem;
  margin-top: var(--space-xl);
  margin-bottom: var(--space-md);
}

.legal p,
.legal li {
  font-size: 0.95rem;
  line-height: 1.8;
  color: var(--ms-secondary);
}

.legal ul {
  padding-left: var(--space-lg);
  margin: var(--space-md) 0;
}

.legal li {
  margin-bottom: var(--space-sm);
}

.legal a {
  color: var(--ms-primary);
  font-weight: 600;
}

.legal a:hover {
  opacity: 0.8;
}

/* ─── Coming Soon Page ─── */
.coming-soon {
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 100dvh;
  padding: var(--space-xl) var(--space-lg);
}

.coming-soon__content {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-xl);
  text-align: center;
  max-width: 600px;
}

.coming-soon__icons {
  display: flex;
  justify-content: center;
  gap: var(--space-lg);
  flex-wrap: wrap;
}

.coming-soon__icon-card {
  width: 88px;
  height: 88px;
  border-radius: var(--radius-lg);
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--ms-card-background);
  box-shadow: 0 4px 16px rgba(0, 0, 0, 0.06);
  transition: transform 0.3s cubic-bezier(0.34, 1.56, 0.64, 1);
}

.coming-soon__icon-card:hover {
  transform: translateY(-4px);
}

.coming-soon__icon-card img {
  width: 44px;
  height: 44px;
  opacity: 0.7;
}

.coming-soon__description {
  font-size: clamp(1.1rem, 2.5vw, 1.3rem);
  font-weight: 500;
  color: var(--ms-secondary);
  line-height: 1.5;
  max-width: 400px;
}

.coming-soon__logo {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-md);
}

.coming-soon__logo-icon {
  width: 72px;
  height: auto;
}

.coming-soon__logo-wordmark {
  width: 200px;
  height: auto;
}

.coming-soon__tagline {
  font-size: 1.15rem;
  font-weight: 500;
  color: var(--ms-secondary);
  letter-spacing: -0.01em;
}

.coming-soon__stores {
  display: flex;
  flex-direction: column;
  gap: var(--space-xs);
}

.coming-soon__stores p {
  font-size: 0.85rem;
  color: var(--ms-tertiary);
}

.coming-soon__stores strong {
  color: var(--ms-secondary);
  font-weight: 600;
}

.coming-soon__legal {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
}

.coming-soon__legal a {
  font-size: 0.8rem;
  color: var(--ms-tertiary);
  font-weight: 500;
  transition: color 0.2s ease;
}

.coming-soon__legal a:hover {
  color: var(--ms-primary);
  opacity: 1;
}

.coming-soon__legal-dot {
  width: 3px;
  height: 3px;
  border-radius: 50%;
  background: var(--ms-tertiary);
}

/* ─── Responsive ─── */
@media (max-width: 768px) {
  .hero__layout {
    grid-template-columns: 1fr;
    gap: var(--space-xl);
  }

  .hero__visual {
    order: -1;
  }

  .hero__avatar-grid {
    grid-template-columns: repeat(3, 1fr);
    gap: 6px;
  }

  .avatar-state {
    width: 72px;
    height: 72px;
    font-size: 0.55rem;
  }

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

  .steps {
    grid-template-columns: 1fr;
    gap: var(--space-xl);
  }

  .footer__inner {
    flex-direction: column;
  }

  .footer__links {
    flex-direction: column;
    gap: var(--space-xl);
  }

  .nav__links--desktop {
    display: none;
  }

  .nav__hamburger {
    display: flex;
  }

  .nav__mobile {
    display: block;
  }
}