/* ============================================
   Nimbus Fitness — Full Site Styles
   ============================================ */

/* --- Site Header / Nav --- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background-color: var(--color-bg);
  border-bottom: 1px solid var(--color-border);
  backdrop-filter: blur(12px);
  background-color: rgba(255, 255, 255, 0.85);
}

@media (prefers-color-scheme: dark) {
  .site-header {
    background-color: rgba(15, 23, 42, 0.85);
  }
}

.site-header .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 4rem;
}

.site-logo {
  font-size: var(--font-size-xl);
  font-weight: 800;
  color: var(--color-text);
  letter-spacing: -0.02em;
}

.site-logo:hover {
  text-decoration: none;
}

.site-logo span {
  color: var(--color-primary);
}

.nav-links {
  display: flex;
  align-items: center;
  gap: var(--space-lg);
}

.nav-links a {
  font-size: var(--font-size-sm);
  font-weight: 500;
  color: var(--color-text-secondary);
  transition: color var(--transition-fast);
}

.nav-links a:hover {
  color: var(--color-text);
  text-decoration: none;
}

.nav-toggle {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  padding: var(--space-sm);
  color: var(--color-text);
}

.nav-toggle svg {
  width: 1.5rem;
  height: 1.5rem;
}

/* Mobile nav */
@media (max-width: 768px) {
  .nav-toggle {
    display: block;
  }

  .nav-links {
    display: none;
    position: absolute;
    top: 4rem;
    left: 0;
    right: 0;
    flex-direction: column;
    background-color: var(--color-bg);
    border-bottom: 1px solid var(--color-border);
    padding: var(--space-lg);
    gap: var(--space-md);
  }

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

/* --- Hero --- */
.hero {
  padding: var(--space-4xl) 0;
  text-align: center;
}

.hero__content {
  max-width: 40rem;
  margin-inline: auto;
}

.hero__badge {
  display: inline-block;
  padding: var(--space-xs) var(--space-md);
  font-size: var(--font-size-sm);
  font-weight: 600;
  color: var(--color-primary);
  background-color: rgba(79, 70, 229, 0.1);
  border-radius: var(--radius-full);
  margin-bottom: var(--space-lg);
}

@media (prefers-color-scheme: dark) {
  .hero__badge {
    background-color: rgba(129, 140, 248, 0.15);
  }
}

.hero h1 {
  margin-bottom: var(--space-lg);
}

.hero__subtitle {
  font-size: var(--font-size-lg);
  color: var(--color-text-secondary);
  margin-bottom: var(--space-2xl);
  max-width: 36rem;
  margin-inline: auto;
}

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

.hero__screenshot {
  margin-top: var(--space-3xl);
  max-width: 20rem;
  margin-inline: auto;
}

.hero__screenshot img {
  border-radius: var(--radius-xl);
  box-shadow: var(--shadow-lg);
}

/* App Store badge */
.app-store-badge img {
  height: 3.25rem;
  width: auto;
}

/* Placeholder for screenshot mockup */
.phone-mockup {
  width: 100%;
  max-width: 18rem;
  aspect-ratio: 9 / 19;
  margin-inline: auto;
  background: linear-gradient(135deg, var(--color-surface), var(--color-surface-hover));
  border-radius: 2rem;
  border: 3px solid var(--color-border);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-text-muted);
  font-size: var(--font-size-sm);
  margin-top: var(--space-3xl);
}

/* --- Features --- */
.features {
  padding: var(--space-4xl) 0;
  background-color: var(--color-bg-alt);
}

.features__header {
  text-align: center;
  margin-bottom: var(--space-3xl);
}

.features__header p {
  font-size: var(--font-size-lg);
  margin-top: var(--space-md);
  max-width: 32rem;
  margin-inline: auto;
}

.features__grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(16rem, 1fr));
  gap: var(--space-xl);
}

.feature-card {
  padding: var(--space-xl);
  background-color: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  transition: box-shadow var(--transition-base), transform var(--transition-base);
}

.feature-card:hover {
  box-shadow: var(--shadow-md);
  transform: translateY(-2px);
}

.feature-card__icon {
  width: 3rem;
  height: 3rem;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(79, 70, 229, 0.1);
  border-radius: var(--radius-md);
  margin-bottom: var(--space-md);
  font-size: 1.5rem;
}

@media (prefers-color-scheme: dark) {
  .feature-card__icon {
    background: rgba(129, 140, 248, 0.15);
  }
}

.feature-card h3 {
  font-size: var(--font-size-lg);
  margin-bottom: var(--space-sm);
}

.feature-card p {
  font-size: var(--font-size-sm);
}

/* --- CTA Section --- */
.cta {
  padding: var(--space-4xl) 0;
  text-align: center;
}

.cta__content {
  max-width: 32rem;
  margin-inline: auto;
}

.cta h2 {
  margin-bottom: var(--space-md);
}

.cta p {
  font-size: var(--font-size-lg);
  margin-bottom: var(--space-2xl);
}

/* --- Site Footer --- */
.site-footer {
  padding: var(--space-3xl) 0 var(--space-xl);
  border-top: 1px solid var(--color-border);
}

.site-footer__grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr;
  gap: var(--space-2xl);
  margin-bottom: var(--space-2xl);
}

.site-footer__brand p {
  font-size: var(--font-size-sm);
  max-width: 20rem;
  margin-top: var(--space-sm);
}

.site-footer h4 {
  font-size: var(--font-size-sm);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--color-text-muted);
  margin-bottom: var(--space-md);
}

.site-footer ul a {
  font-size: var(--font-size-sm);
  color: var(--color-text-secondary);
  display: block;
  padding-block: var(--space-xs);
}

.site-footer ul a:hover {
  color: var(--color-text);
  text-decoration: none;
}

.site-footer__bottom {
  padding-top: var(--space-xl);
  border-top: 1px solid var(--color-border);
  text-align: center;
}

.site-footer__bottom p {
  font-size: var(--font-size-sm);
  color: var(--color-text-muted);
}

@media (max-width: 768px) {
  .site-footer__grid {
    grid-template-columns: 1fr;
  }
}

/* --- About Page --- */
.about-hero {
  padding: var(--space-4xl) 0 var(--space-2xl);
  text-align: center;
}

.about-hero p {
  font-size: var(--font-size-lg);
  max-width: 36rem;
  margin-inline: auto;
  margin-top: var(--space-lg);
}

.about-section {
  padding: var(--space-2xl) 0;
}

.about-section h2 {
  margin-bottom: var(--space-lg);
}

.about-section p {
  margin-bottom: var(--space-md);
  line-height: 1.7;
}

.about-values {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(14rem, 1fr));
  gap: var(--space-xl);
  margin-top: var(--space-xl);
}

.about-value h3 {
  font-size: var(--font-size-lg);
  margin-bottom: var(--space-sm);
}

.about-value p {
  font-size: var(--font-size-sm);
}

/* --- 404 Page --- */
.not-found {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  min-height: 60vh;
  text-align: center;
  padding: var(--space-3xl);
}

.not-found h1 {
  font-size: 6rem;
  color: var(--color-primary);
  line-height: 1;
  margin-bottom: var(--space-md);
}

.not-found p {
  font-size: var(--font-size-lg);
  margin-bottom: var(--space-2xl);
}