* {
  box-sizing: border-box;
}

html,
body {
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
}

body {
  background: radial-gradient(1200px 600px at 12% -10%, var(--brand-soft), transparent 60%),
    radial-gradient(900px 500px at 100% 0%, var(--c-directory-soft), transparent 55%), var(--bg-deep);
  color: var(--fg-primary);
  min-height: 100vh;
}

::selection {
  background: var(--brand-glow);
  color: #fff;
}

a {
  color: inherit;
  text-decoration: none;
}

img,
svg {
  display: block;
  max-width: 100%;
}

.wrap {
  max-width: 1180px;
  margin: 0 auto;
  padding: 0 clamp(20px, 4vw, 56px);
}

:focus-visible {
  outline: 2px solid var(--brand);
  outline-offset: 3px;
  border-radius: var(--radius-sm);
}

/* Nav */

.site-nav {
  position: sticky;
  top: 0;
  z-index: 40;
  backdrop-filter: blur(16px);
  background: color-mix(in srgb, var(--bg-deep) 72%, transparent);
  border-bottom: 1px solid var(--border-hair);
}

.site-nav .wrap {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 72px;
  gap: 24px;
}

.brandmark {
  display: flex;
  align-items: center;
  gap: 10px;
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 17px;
}

.brandmark .dot {
  width: 9px;
  height: 9px;
  border-radius: 50%;
  background: var(--brand);
  box-shadow: 0 0 14px var(--brand-glow);
}

.nav-links {
  display: flex;
  align-items: center;
  gap: clamp(14px, 2vw, 28px);
  list-style: none;
  margin: 0;
  padding: 0;
}

.nav-links a {
  font-size: var(--text-sm);
  color: var(--fg-secondary);
  transition: color var(--duration-fast) var(--ease-out-expo);
}

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

.nav-controls {
  display: flex;
  align-items: center;
  gap: 8px;
}

.icon-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  height: 36px;
  padding: 0 12px;
  border-radius: var(--radius-pill);
  border: 1px solid var(--border-hair-strong);
  background: var(--glass);
  color: var(--fg-primary);
  font-family: var(--font-body);
  font-size: var(--text-sm);
  font-weight: 600;
  cursor: pointer;
  transition: transform var(--duration-fast) var(--ease-out-expo),
    background var(--duration-fast) var(--ease-out-expo);
}

.icon-btn:hover {
  background: var(--glass-strong);
  transform: translateY(-1px);
}

/* Buttons */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  height: 52px;
  padding: 0 26px;
  border-radius: var(--radius-pill);
  font-family: var(--font-display);
  font-weight: 700;
  font-size: var(--text-base);
  border: 1px solid transparent;
  cursor: pointer;
  transition: transform var(--duration-fast) var(--ease-out-expo),
    box-shadow var(--duration-fast) var(--ease-out-expo);
}

.btn:hover {
  transform: translateY(-2px);
}

.btn-primary {
  background: var(--brand);
  color: #fff;
  box-shadow: 0 12px 32px -8px var(--brand-glow);
}

.btn-primary:hover {
  box-shadow: 0 16px 40px -8px var(--brand-glow);
}

.btn-secondary {
  background: var(--glass);
  color: var(--fg-primary);
  border-color: var(--border-hair-strong);
}

.btn-secondary:hover {
  background: var(--glass-strong);
}

/* Sections */

section {
  padding: var(--space-section) 0;
}

.section-head {
  max-width: 42em;
  margin-bottom: clamp(2.5rem, 2rem + 2vw, 4rem);
}

.section-head h2 {
  margin: 0.5em 0 0.4em;
}

/* Panels & cards */

.panel {
  background: var(--glass);
  border: 1px solid var(--border-hair);
  border-radius: var(--radius-lg);
  padding: clamp(20px, 3vw, 32px);
}

/* Footer */

.site-footer {
  border-top: 1px solid var(--border-hair);
  padding: clamp(40px, 6vw, 72px) 0;
}

.footer-grid {
  display: flex;
  flex-wrap: wrap;
  gap: clamp(24px, 4vw, 48px);
  justify-content: space-between;
}

.footer-links {
  display: flex;
  flex-wrap: wrap;
  gap: 16px 28px;
  list-style: none;
  margin: 0;
  padding: 0;
}

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

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

.footer-meta {
  margin-top: 32px;
  color: var(--fg-tertiary);
  font-size: var(--text-xs);
}

/* Reveal-on-scroll (compositor-friendly, motion clarifies entry order).
   Gated behind html.js so content stays visible by default if JavaScript
   fails or never runs — the IntersectionObserver is progressive
   enhancement, not a requirement for reading the page. */

html.js [data-reveal] {
  opacity: 0;
  transform: translateY(16px);
  transition: opacity var(--duration-normal) var(--ease-out-expo),
    transform var(--duration-normal) var(--ease-out-expo);
}

html.js [data-reveal].is-visible {
  opacity: 1;
  transform: translateY(0);
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

  html.js [data-reveal] {
    opacity: 1;
    transform: none;
    transition: none;
  }

  .btn:hover,
  .icon-btn:hover {
    transform: none;
  }
}

@media (max-width: 768px) {
  .nav-links {
    display: none;
  }
}