:root {
  --color-bg: #ffffff;
  --color-bg-alt: #f6f5f3;
  --color-text: #1a1a1a;
  --color-text-muted: #5c5c5c;
  --color-border: #e5e3df;
  --color-accent: #d9642c;
  --color-accent-hover: #b84f20;
  --max-width: 960px;
  --radius: 10px;
}

@media (prefers-color-scheme: dark) {
  :root {
    --color-bg: #121212;
    --color-bg-alt: #1a1a1a;
    --color-text: #f0efec;
    --color-text-muted: #a3a09b;
    --color-border: #2c2c2c;
    --color-accent: #e8823f;
    --color-accent-hover: #f2954f;
  }
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  background: var(--color-bg);
  color: var(--color-text);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

a {
  color: var(--color-accent);
  text-decoration: none;
}

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

.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 1.5rem;
}

/* Header / nav */

.site-header {
  border-bottom: 1px solid var(--color-border);
  position: sticky;
  top: 0;
  background: var(--color-bg);
  z-index: 10;
}

.site-header .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 64px;
}

.brand {
  font-weight: 700;
  font-size: 1.1rem;
  color: var(--color-text);
  letter-spacing: -0.01em;
}

.brand:hover {
  color: var(--color-text);
}

.nav-toggle {
  display: none;
  background: none;
  border: none;
  color: var(--color-text);
  font-size: 1.5rem;
  cursor: pointer;
}

.nav-links {
  display: flex;
  gap: 2rem;
  list-style: none;
  margin: 0;
  padding: 0;
}

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

.nav-links a:hover,
.nav-links a[aria-current="page"] {
  color: var(--color-text);
}

@media (max-width: 640px) {
  .nav-toggle {
    display: block;
  }

  .nav-links {
    display: none;
    position: absolute;
    top: 64px;
    left: 0;
    right: 0;
    background: var(--color-bg);
    border-bottom: 1px solid var(--color-border);
    flex-direction: column;
    gap: 0;
    padding: 0.5rem 0;
  }

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

  .nav-links li {
    padding: 0.75rem 1.5rem;
  }
}

/* Main content */

main {
  min-height: calc(100vh - 64px - 100px);
}

.hero {
  padding: 5rem 0 3.5rem;
}

.hero h1 {
  font-size: clamp(2rem, 5vw, 2.75rem);
  margin: 0 0 1rem;
  letter-spacing: -0.02em;
}

.hero p {
  font-size: 1.1rem;
  color: var(--color-text-muted);
  max-width: 620px;
  margin: 0 0 1.75rem;
}

.button {
  display: inline-block;
  background: var(--color-accent);
  color: #fff;
  padding: 0.7rem 1.4rem;
  border-radius: var(--radius);
  font-weight: 600;
  font-size: 0.95rem;
}

.button:hover {
  background: var(--color-accent-hover);
  color: #fff;
}

.button.secondary {
  background: transparent;
  color: var(--color-text);
  border: 1px solid var(--color-border);
}

.button.secondary:hover {
  border-color: var(--color-text-muted);
  color: var(--color-text);
}

section {
  padding: 3rem 0;
  border-top: 1px solid var(--color-border);
}

section h2 {
  font-size: 1.5rem;
  margin: 0 0 0.5rem;
  letter-spacing: -0.01em;
}

section > p.section-lead {
  color: var(--color-text-muted);
  margin: 0 0 2rem;
  max-width: 620px;
}

/* Product cards */

.card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
  gap: 1.25rem;
}

.card {
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: 1.5rem;
  background: var(--color-bg-alt);
  display: flex;
  flex-direction: column;
  gap: 0.6rem;
}

.card h3 {
  margin: 0;
  font-size: 1.15rem;
}

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

.badge {
  display: inline-block;
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--color-accent);
  background: color-mix(in srgb, var(--color-accent) 14%, transparent);
  padding: 0.2rem 0.6rem;
  border-radius: 999px;
  width: fit-content;
}

.card .card-link {
  margin-top: 0.5rem;
  font-weight: 600;
  font-size: 0.9rem;
}

/* Product detail page */

.product-hero {
  padding: 3.5rem 0 2.5rem;
}

.product-hero .badge {
  margin-bottom: 1rem;
}

.product-hero h1 {
  font-size: clamp(1.75rem, 4vw, 2.4rem);
  margin: 0 0 0.75rem;
  letter-spacing: -0.02em;
}

.product-hero p.lead {
  font-size: 1.05rem;
  color: var(--color-text-muted);
  max-width: 640px;
}

.feature-list {
  list-style: none;
  padding: 0;
  margin: 0;
  display: grid;
  gap: 0.9rem;
}

.feature-list li {
  padding-left: 1.6rem;
  position: relative;
  color: var(--color-text-muted);
}

.feature-list li::before {
  content: "\2713";
  position: absolute;
  left: 0;
  color: var(--color-accent);
  font-weight: 700;
}

.tech-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
}

.tech-tags span {
  font-size: 0.82rem;
  border: 1px solid var(--color-border);
  border-radius: 999px;
  padding: 0.25rem 0.7rem;
  color: var(--color-text-muted);
}

.back-link {
  display: inline-block;
  margin-bottom: 1.5rem;
  font-size: 0.9rem;
  color: var(--color-text-muted);
}

/* Empty state (blog) */

.empty-state {
  text-align: center;
  padding: 4rem 1rem;
  color: var(--color-text-muted);
}

.empty-state h2 {
  color: var(--color-text);
}

/* Profile */

.profile-header {
  display: flex;
  align-items: center;
  gap: 1.25rem;
  padding: 3.5rem 0 1rem;
}

.avatar {
  width: 76px;
  height: 76px;
  border-radius: 50%;
  background: var(--color-accent);
  color: #fff;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.6rem;
  font-weight: 700;
  flex-shrink: 0;
}

.profile-header h1 {
  margin: 0 0 0.25rem;
  font-size: 1.75rem;
}

.profile-header p {
  margin: 0;
  color: var(--color-text-muted);
}

/* Footer */

.site-footer {
  border-top: 1px solid var(--color-border);
  padding: 1.75rem 0;
}

.site-footer .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 0.75rem;
}

.site-footer p {
  margin: 0;
  color: var(--color-text-muted);
  font-size: 0.85rem;
}

.footer-links {
  display: flex;
  gap: 1.25rem;
  list-style: none;
  margin: 0;
  padding: 0;
}

.footer-links a {
  color: var(--color-text-muted);
  font-size: 0.85rem;
}

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