/* ============================================
   LUMINATA — Layout (Nav, Sections, Footer)
   ============================================ */

/* --- Navigation --- */
.nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: var(--nav-height);
  background: var(--bg-nav);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--border-subtle);
  z-index: var(--z-nav);
  transition: background var(--transition-base), border-color var(--transition-base);
}

.nav-inner {
  max-width: var(--container-wide);
  margin: 0 auto;
  padding: 0 var(--space-xl);
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

/* Logo */
.nav-logo {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  text-decoration: none;
  color: var(--text-primary);
  flex-shrink: 0;
}
.nav-logo svg {
  width: 28px;
  height: 28px;
}
.nav-logo-text {
  font-family: var(--font-heading);
  font-weight: 600;
  font-size: var(--text-lg);
  letter-spacing: var(--tracking-wider);
  text-transform: uppercase;
}

/* Nav links */
.nav-links {
  display: flex;
  align-items: center;
  gap: var(--space-xs);
  list-style: none;
}

.nav-link {
  font-size: var(--text-sm);
  font-weight: 500;
  color: var(--text-secondary);
  padding: 0.4rem 0.8rem;
  border-radius: var(--radius-sm);
  transition: color var(--transition-fast), background var(--transition-fast);
  cursor: pointer;
  text-decoration: none;
  position: relative;
}
.nav-link:hover,
.nav-link.active {
  color: var(--text-primary);
}
.nav-link.active::after {
  content: '';
  position: absolute;
  bottom: -2px;
  left: 50%;
  transform: translateX(-50%);
  width: 16px;
  height: 2px;
  background: var(--accent-orange);
  border-radius: 1px;
}

/* Product category nav links — colored dot indicator */
.nav-link--cat {
  display: inline-flex;
  align-items: center;
  gap: 6px;
}
.nav-link--cat::before {
  content: '';
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--cat-color);
  flex-shrink: 0;
  opacity: 0.8;
  transition: opacity var(--transition-fast), transform var(--transition-fast);
}
.nav-link--cat:hover::before {
  opacity: 1;
  transform: scale(1.3);
}
.nav-link--cat:hover {
  color: var(--cat-color);
}
.nav-link--cat.active::after {
  background: var(--cat-color);
}

/* Nav dividers — visual grouping */
.nav-divider {
  width: 1px;
  height: 16px;
  background: var(--border-subtle);
  margin: 0 var(--space-xs);
  flex-shrink: 0;
}

/* Nav right section */
.nav-right {
  display: flex;
  align-items: center;
  gap: var(--space-md);
}

/* Theme toggle — 44px touch target */
.theme-toggle {
  width: 44px;
  height: 44px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: transparent;
  border: 1px solid var(--border-subtle);
  border-radius: var(--radius-sm);
  color: var(--text-secondary);
  cursor: pointer;
  transition: border-color var(--transition-fast), color var(--transition-fast);
  position: relative;
}
.theme-toggle:hover {
  border-color: var(--border-hover);
  color: var(--text-primary);
}
.theme-toggle svg {
  width: 18px;
  height: 18px;
  position: absolute;
  transition: opacity 0.25s ease, transform 0.35s ease;
}

[data-theme="dark"] .icon-sun { opacity: 1; transform: rotate(0deg); }
[data-theme="dark"] .icon-moon { opacity: 0; transform: rotate(-90deg); }
[data-theme="light"] .icon-sun { opacity: 0; transform: rotate(90deg); }
[data-theme="light"] .icon-moon { opacity: 1; transform: rotate(0deg); }

/* Mobile hamburger — 44px touch target */
.nav-hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 4px;
  min-width: 44px;
  min-height: 44px;
  align-items: center;
  justify-content: center;
}
.nav-hamburger span {
  display: block;
  width: 22px;
  height: 2px;
  background: var(--text-secondary);
  border-radius: 1px;
  transition: transform var(--transition-fast), opacity var(--transition-fast);
}
.nav-hamburger.open span:nth-child(1) {
  transform: rotate(45deg) translate(5px, 7px);
}
.nav-hamburger.open span:nth-child(2) {
  opacity: 0;
  transform: scaleX(0);
}
.nav-hamburger.open span:nth-child(3) {
  transform: rotate(-45deg) translate(5px, -7px);
}

/* --- Mobile nav --- */
@media (max-width: 768px) {
  .nav-links {
    position: fixed;
    top: var(--nav-height);
    left: 0;
    right: 0;
    background: var(--bg-secondary);
    border-bottom: 1px solid var(--border-subtle);
    flex-direction: column;
    padding: var(--space-lg);
    gap: var(--space-xs);
    transform: translateY(-100%);
    opacity: 0;
    pointer-events: none;
    transition: transform var(--transition-base), opacity var(--transition-base);
    z-index: 99;
    max-height: calc(100vh - var(--nav-height));
    overflow-y: auto;
  }
  .nav-links.open {
    transform: translateY(0);
    opacity: 1;
    pointer-events: auto;
  }
  /* Mobile nav links — 44px touch targets */
  .nav-link {
    width: 100%;
    padding: 0.85rem 1rem;
    min-height: 44px;
    display: flex;
    align-items: center;
  }
  .nav-divider {
    display: none;
  }
  .nav-hamburger {
    display: flex;
  }
  /* "Get in Touch" button — hide on mobile (Contact link in menu) */
  .nav .btn-primary {
    display: none;
  }
}

/* --- Hero section --- */
.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
  background: var(--gradient-hero);
  padding-top: var(--nav-height);
  overflow: hidden;
}

.hero-content {
  text-align: center;
  position: relative;
  z-index: 2;
  max-width: 800px;
  padding: var(--space-3xl) var(--space-xl);
}

.hero-label {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  text-transform: uppercase;
  letter-spacing: var(--tracking-wider);
  color: var(--accent-orange);
  margin-bottom: var(--space-lg);
}

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

.hero-desc {
  font-size: var(--text-lg);
  color: var(--text-secondary);
  max-width: 550px;
  margin: 0 auto var(--space-2xl);
  line-height: 1.75;
}

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

/* Hero grid background */
.hero-grid {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(var(--dot-color) 1px, transparent 1px),
    linear-gradient(90deg, var(--dot-color) 1px, transparent 1px);
  background-size: 60px 60px;
  mask-image: radial-gradient(ellipse at center, black 30%, transparent 70%);
  -webkit-mask-image: radial-gradient(ellipse at center, black 30%, transparent 70%);
}

/* Subtle glow orbs — opacity 0.22 */
.hero-orb {
  position: absolute;
  border-radius: 50%;
  filter: blur(80px);
  opacity: 0.22;
  pointer-events: none;
}
.hero-orb-1 {
  width: 400px;
  height: 400px;
  background: var(--accent-orange);
  top: 20%;
  right: 10%;
}
.hero-orb-2 {
  width: 300px;
  height: 300px;
  background: var(--accent-purple);
  bottom: 20%;
  left: 10%;
}

@keyframes orbFloat {
  0%, 100% { transform: translate(0, 0); }
  50% { transform: translate(15px, -10px); }
}

.hero-orb-1 {
  animation: orbFloat 8s ease-in-out infinite;
}
.hero-orb-2 {
  animation: orbFloat 10s ease-in-out infinite reverse;
}

/* Pause orb animation when page is off-screen */
.page:not(.active) .hero-orb {
  animation-play-state: paused;
}
@media (prefers-reduced-motion: reduce) {
  .hero-orb { animation: none; }
}

/* --- Mobile hero adjustments --- */
@media (max-width: 768px) {
  .hero-content {
    padding: var(--space-2xl) var(--space-lg);
  }
  .hero-buttons .btn {
    min-height: 44px;
    padding: 0.8rem 1.8rem;
  }
  .hero-orb-1 {
    width: 200px;
    height: 200px;
  }
  .hero-orb-2 {
    width: 150px;
    height: 150px;
  }
}

/* --- Page header (inner pages) --- */
.page-header {
  padding: calc(var(--nav-height) + var(--space-4xl)) 0 var(--space-3xl);
  background: var(--gradient-hero);
  position: relative;
}
.page-header .hero-grid {
  opacity: 0.5;
}

/* --- Footer --- */
.footer {
  background: var(--bg-secondary);
  border-top: 1px solid var(--border-subtle);
  padding: var(--space-3xl) 0 var(--space-xl);
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.5fr 1fr 1fr 1fr 1fr;
  gap: var(--space-xl);
  margin-bottom: var(--space-2xl);
}

.footer-brand p {
  font-size: var(--text-sm);
  color: var(--text-muted);
  margin-top: var(--space-md);
  max-width: 280px;
}

.footer-col-title {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  text-transform: uppercase;
  letter-spacing: var(--tracking-wide);
  color: var(--text-muted);
  margin-bottom: var(--space-md);
}

.footer-links {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: var(--space-sm);
}
.footer-links a {
  font-size: var(--text-sm);
  color: var(--text-secondary);
  transition: color var(--transition-fast);
}
.footer-links a:hover {
  color: var(--accent-orange);
}

.footer-bottom {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding-top: var(--space-xl);
  border-top: 1px solid var(--border-subtle);
}
.footer-copy {
  font-size: var(--text-sm);
  color: var(--text-muted);
}

@media (max-width: 768px) {
  .footer-grid {
    grid-template-columns: 1fr 1fr;
    gap: var(--space-lg);
  }
  .footer-brand {
    grid-column: 1 / -1;
  }
  .footer-bottom {
    flex-direction: column;
    gap: var(--space-md);
    text-align: center;
  }
  /* Footer links — touch target padding on mobile */
  .footer-links a {
    padding: 10px 0;
    display: block;
    min-height: 44px;
  }
}

@media (max-width: 480px) {
  .footer-grid {
    grid-template-columns: 1fr;
  }
}

/* --- Page transition wrapper --- */
.page {
  display: none;
  opacity: 0;
  transform: translateY(12px);
  pointer-events: none;
}
.page.active {
  display: block;
  opacity: 1;
  transform: translateY(0);
  pointer-events: auto;
  animation: pageIn 0.4s ease;
}

@keyframes pageIn {
  from {
    opacity: 0;
    transform: translateY(12px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* --- Scroll-to-top button --- */
.scroll-top-btn {
  position: fixed;
  bottom: var(--space-xl);
  right: var(--space-xl);
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background: var(--bg-card);
  border: 1px solid var(--border-subtle);
  color: var(--text-muted);
  cursor: pointer;
  opacity: 0;
  pointer-events: none;
  transition: opacity var(--transition-base), border-color var(--transition-base), color var(--transition-base);
  z-index: 50;
  display: flex;
  align-items: center;
  justify-content: center;
  -webkit-tap-highlight-color: transparent;
}
.scroll-top-btn.visible { opacity: 1; pointer-events: auto; }
.scroll-top-btn:hover { border-color: var(--border-hover); color: var(--text-primary); }