/* thelifervault.io – Anthropic-inspired responsive marketing site */

:root {
  --color-bg: #0d0d0d;
  --color-bg-alt: #141414;
  --color-bg-card: #161616;
  --color-text: #f0f0f0;
  --color-text-muted: #d8d8d8;
  --color-text-soft: #a0a0a0;
  --color-border: #2a2a2a;
  --color-accent: #e84a2c;
  --color-accent-hover: #ff6b4a;
  --color-accent-muted: rgba(232, 74, 44, 0.12);
  --font-sans: "DM Sans", system-ui, sans-serif;
  --font-serif: "Instrument Serif", Georgia, serif;
  --space-xs: 0.5rem;
  --space-sm: 1rem;
  --space-md: 1.5rem;
  --space-lg: 2rem;
  --space-xl: 3rem;
  --space-2xl: 4rem;
  --space-3xl: 6rem;
  --space-4xl: 8rem;
  --container: min(100% - 2rem, 72rem);
  --header-h: 4rem;
  --radius: 0.5rem;
  --transition: 0.2s ease;
}

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

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: var(--font-sans);
  font-size: 1rem;
  line-height: 1.6;
  color: var(--color-text);
  background: var(--color-bg);
  -webkit-font-smoothing: antialiased;
}

/* ----- Header ----- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(13, 13, 13, 0.9);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--color-border);
}

.header-inner {
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 var(--space-md);
  height: var(--header-h);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.logo {
  font-family: var(--font-serif);
  font-size: 1.35rem;
  font-weight: 400;
  color: var(--color-text);
  text-decoration: none;
  letter-spacing: -0.02em;
}

.logo:hover {
  color: var(--color-accent);
}

.nav-desktop {
  display: none;
}

.nav-desktop a {
  margin-left: var(--space-lg);
  color: var(--color-text-muted);
  text-decoration: none;
  font-size: 0.9375rem;
  font-weight: 500;
  transition: color var(--transition);
}

.nav-desktop a:hover {
  color: var(--color-text);
}

.nav-desktop .nav-cta {
  color: var(--color-accent);
}

.nav-cta:hover {
  color: var(--color-accent-hover) !important;
}

.nav-toggle {
  display: flex;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 2rem;
  height: 2rem;
  padding: 0;
  background: none;
  border: none;
  cursor: pointer;
  color: var(--color-text);
}

.nav-toggle span {
  display: block;
  width: 100%;
  height: 2px;
  background: currentColor;
  border-radius: 1px;
  transition: transform var(--transition), opacity var(--transition);
}

.site-header.is-open .nav-toggle span:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}

.site-header.is-open .nav-toggle span:nth-child(2) {
  opacity: 0;
}

.site-header.is-open .nav-toggle span:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

.nav-mobile {
  display: none;
  padding: var(--space-md);
  border-top: 1px solid var(--color-border);
  background: var(--color-bg-alt);
}

.site-header.is-open .nav-mobile {
  display: flex;
  flex-direction: column;
  gap: var(--space-sm);
}

.nav-mobile a {
  padding: var(--space-sm) 0;
  color: var(--color-text);
  text-decoration: none;
  font-weight: 500;
}

.nav-mobile a:hover {
  color: var(--color-accent);
}

@media (min-width: 768px) {
  .nav-desktop {
    display: flex;
    align-items: center;
  }

  .nav-toggle {
    display: none;
  }

  .nav-mobile {
    display: none !important;
  }
}

/* ----- Main content ----- */
main {
  padding-bottom: var(--space-3xl);
}

.container {
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 var(--space-md);
}

/* ----- Hero ----- */
.hero {
  padding: var(--space-3xl) 0;
  text-align: center;
}

@media (min-width: 768px) {
  .hero {
    padding: var(--space-4xl) 0;
  }
}

.hero-label {
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--color-text-muted);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  margin: 0 0 var(--space-md);
}

.hero-title {
  font-family: var(--font-serif);
  font-size: clamp(2.25rem, 5vw, 3.5rem);
  font-weight: 400;
  line-height: 1.15;
  letter-spacing: -0.02em;
  margin: 0 0 var(--space-lg);
  color: var(--color-text);
}

.hero-lead {
  font-size: clamp(1rem, 2vw, 1.25rem);
  color: var(--color-text-muted);
  max-width: 36rem;
  margin: 0 auto var(--space-xl);
  line-height: 1.6;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-sm);
  justify-content: center;
}

/* ----- Buttons ----- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.75rem 1.5rem;
  font-family: var(--font-sans);
  font-size: 0.9375rem;
  font-weight: 600;
  text-decoration: none;
  border-radius: var(--radius);
  transition: background var(--transition), color var(--transition), border-color var(--transition);
}

.btn-primary {
  background: var(--color-accent);
  color: var(--color-bg);
  border: none;
}

.btn-primary:hover {
  background: var(--color-accent-hover);
  color: var(--color-bg);
}

.btn-secondary {
  background: transparent;
  color: var(--color-text);
  border: 2px solid var(--color-border);
}

.btn-secondary:hover {
  border-color: var(--color-text-soft);
  color: var(--color-text);
}

.btn-large {
  padding: 1rem 1.75rem;
  font-size: 1rem;
}

/* ----- Sections ----- */
.section {
  padding: var(--space-2xl) 0;
}

@media (min-width: 768px) {
  .section {
    padding: var(--space-3xl) 0;
  }
}

.section-title {
  font-family: var(--font-serif);
  font-size: clamp(1.75rem, 4vw, 2.5rem);
  font-weight: 400;
  letter-spacing: -0.02em;
  margin: 0 0 var(--space-md);
  color: var(--color-text);
}

.section-lead {
  font-size: 1.125rem;
  color: var(--color-text-muted);
  max-width: 40rem;
  margin: 0 0 var(--space-xl);
}

.section-product .section-lead,
.section-why .section-lead {
  margin-bottom: var(--space-2xl);
}

/* ----- Product grid ----- */
.product-grid {
  display: grid;
  gap: var(--space-lg);
}

@media (min-width: 640px) {
  .product-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (min-width: 1024px) {
  .product-grid {
    grid-template-columns: repeat(4, 1fr);
    gap: var(--space-xl);
  }
}

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

.product-card:hover {
  border-color: var(--color-text-soft);
  box-shadow: 0 4px 24px rgba(232, 74, 44, 0.12);
}

.product-card-icon {
  font-size: 1.75rem;
  margin-bottom: var(--space-sm);
}

.product-card h3 {
  font-size: 1.125rem;
  font-weight: 600;
  margin: 0 0 var(--space-xs);
  color: var(--color-text);
}

.product-card p {
  font-size: 0.9375rem;
  color: var(--color-text-muted);
  margin: 0;
  line-height: 1.55;
}

/* ----- Features list ----- */
.features-list {
  display: flex;
  flex-direction: column;
  gap: var(--space-2xl);
}

.feature-item {
  padding-bottom: var(--space-2xl);
  border-bottom: 1px solid var(--color-border);
}

.feature-item:last-child {
  padding-bottom: 0;
  border-bottom: none;
}

.feature-item h3 {
  font-size: 1.25rem;
  font-weight: 600;
  margin: 0 0 var(--space-sm);
  color: var(--color-text);
}

.feature-item p {
  font-size: 1rem;
  color: var(--color-text-muted);
  margin: 0;
  max-width: 42rem;
  line-height: 1.6;
}

/* ----- Why grid ----- */
.why-grid {
  display: grid;
  gap: var(--space-lg);
  margin-top: var(--space-xl);
}

@media (min-width: 768px) {
  .why-grid {
    grid-template-columns: repeat(3, 1fr);
    gap: var(--space-xl);
  }
}

.why-card {
  padding: var(--space-xl);
  background: var(--color-accent-muted);
  border-radius: var(--radius);
  border: 1px solid rgba(232, 74, 44, 0.25);
}

.why-card h3 {
  font-size: 1.125rem;
  font-weight: 600;
  margin: 0 0 var(--space-sm);
  color: var(--color-text);
}

.why-card p {
  font-size: 0.9375rem;
  color: var(--color-text-muted);
  margin: 0;
  line-height: 1.6;
}

/* ----- Customers ----- */
.section-customers {
  background: var(--color-bg-alt);
}

.section-customers .section-lead {
  margin-bottom: var(--space-2xl);
}

.customers-grid {
  display: grid;
  gap: var(--space-xl);
}

@media (min-width: 768px) {
  .customers-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: var(--space-2xl);
  }
}

.customer-card {
  padding: var(--space-xl);
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  display: flex;
  flex-direction: column;
  align-items: flex-start;
}

.customer-logo-wrap {
  margin-bottom: var(--space-lg);
  max-width: 200px;
  height: 72px;
  display: flex;
  align-items: center;
}

.customer-logo-wrap img {
  max-width: 100%;
  max-height: 100%;
  width: auto;
  height: auto;
  object-fit: contain;
  object-position: left center;
}

.customer-quote {
  margin: 0 0 var(--space-md);
  flex: 1;
}

.customer-quote p {
  font-size: 1rem;
  line-height: 1.6;
  color: var(--color-text-muted);
  margin: 0;
  font-style: italic;
}

.customer-name {
  font-size: 0.9375rem;
  font-weight: 600;
  color: var(--color-text);
  margin: 0 0 var(--space-xs);
}

.customer-tagline {
  font-size: 0.8125rem;
  color: var(--color-text-soft);
  margin: 0;
}

/* ----- CTA ----- */
.section-cta {
  text-align: center;
  background: var(--color-bg-alt);
}

.section-cta .section-title {
  margin-bottom: var(--space-sm);
}

.section-cta .section-lead {
  margin-left: auto;
  margin-right: auto;
  margin-bottom: var(--space-xl);
}

.cta-actions {
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
}

.cta-actions .btn {
  min-width: 12rem;
}

/* ----- Footer ----- */
.site-footer {
  padding: var(--space-2xl) 0 var(--space-lg);
  border-top: 1px solid var(--color-border);
  background: var(--color-bg);
}

.footer-inner {
  display: flex;
  flex-direction: column;
  gap: var(--space-xl);
  margin-bottom: var(--space-xl);
}

@media (min-width: 640px) {
  .footer-inner {
    flex-direction: row;
    justify-content: space-between;
    align-items: flex-start;
  }
}

.footer-brand .logo {
  font-size: 1.25rem;
}

.footer-tagline {
  font-size: 0.9375rem;
  color: var(--color-text-muted);
  margin: var(--space-xs) 0 0;
  max-width: 20rem;
}

.footer-links {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-md);
}

.footer-links a {
  color: var(--color-text-muted);
  text-decoration: none;
  font-size: 0.9375rem;
  font-weight: 500;
}

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

.footer-copy {
  font-size: 0.875rem;
  color: var(--color-text-soft);
  margin: 0;
}