/* ============================================
   BLACKLOTUSCODE — Layout
   Nav, footer, page structure, responsive
   ============================================ */

/* --- Container --- */
.container {
  width: 100%;
  max-width: var(--content-width);
  margin: 0 auto;
  padding: 0 var(--space-xl);
}

.container--narrow {
  max-width: var(--content-narrow);
}

/* --- Section Spacing --- */
.section {
  padding: var(--space-section) 0;
}

.section--tight {
  padding: var(--space-4xl) 0;
}

/* --- Section Divider (subtle gold line) --- */
.section + .section {
  border-top: 1px solid var(--border-subtle);
}

/* ============================================
   NAVIGATION
   ============================================ */
.nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  height: var(--nav-height);
  background-color: rgba(10, 10, 10, 0.92);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border-subtle);
}

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

.nav__logo {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  font-family: var(--font-heading);
  font-size: var(--size-base);
  font-weight: var(--weight-bold);
  color: var(--gold);
  text-decoration: none;
  letter-spacing: 0.05em;
  transition: color var(--transition-fast);
}

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

.nav__logo-img {
  width: 32px;
  height: 32px;
  object-fit: contain;
  opacity: 0.8;
  transition: opacity var(--transition-fast);
}

.nav__logo:hover .nav__logo-img {
  opacity: 1;
}

.nav__links {
  display: flex;
  gap: var(--space-lg);
  list-style: none;
  padding: 0;
  margin: 0;
}

.nav__links li {
  margin: 0;
}

.nav__links a {
  font-family: var(--font-body);
  font-size: var(--size-sm);
  font-weight: var(--weight-medium);
  color: var(--text-secondary);
  text-decoration: none;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  transition: color var(--transition-fast);
}

.nav__links a:hover,
.nav__links a.active {
  color: var(--gold);
}

/* --- Mobile Nav Toggle --- */
.nav__toggle {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  padding: var(--space-sm);
}

.nav__toggle span {
  display: block;
  width: 24px;
  height: 2px;
  background-color: var(--text-primary);
  margin: 5px 0;
  transition: all var(--transition-base);
}

/* Nav open state */
.nav__toggle.open span:nth-child(1) {
  transform: rotate(45deg) translate(5px, 5px);
}
.nav__toggle.open span:nth-child(2) {
  opacity: 0;
}
.nav__toggle.open span:nth-child(3) {
  transform: rotate(-45deg) translate(5px, -5px);
}

/* --- Page Body Offset (for fixed nav) --- */
.page-body {
  padding-top: var(--nav-height);
}

/* ============================================
   FOOTER
   ============================================ */
.footer {
  padding: var(--space-3xl) 0;
  border-top: 1px solid var(--border-subtle);
  text-align: center;
}

.footer__brand {
  font-family: var(--font-heading);
  font-size: var(--size-sm);
  color: var(--gold-dim);
  letter-spacing: 0.05em;
  margin-bottom: var(--space-md);
}

.footer__links {
  display: flex;
  justify-content: center;
  gap: var(--space-lg);
  list-style: none;
  padding: 0;
  margin: 0 0 var(--space-lg) 0;
}

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

.footer__links a:hover {
  color: var(--gold);
}

.footer__copy {
  font-size: var(--size-xs);
  color: var(--text-muted);
}

/* ============================================
   GRID SYSTEMS
   ============================================ */
.grid {
  display: grid;
  gap: var(--space-xl);
}

.grid--2 {
  grid-template-columns: 1fr;
}

.grid--3 {
  grid-template-columns: 1fr;
}

/* ============================================
   RESPONSIVE
   ============================================ */

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

  .grid--3 {
    grid-template-columns: repeat(2, 1fr);
  }
}

/* --- Desktop (1024px+) --- */
@media (min-width: 1024px) {
  .grid--3 {
    grid-template-columns: repeat(3, 1fr);
  }

  h1 {
    font-size: var(--size-hero);
  }

  h2 {
    font-size: var(--size-3xl);
  }
}

/* --- Mobile Nav (below 640px) --- */
@media (max-width: 639px) {
  .nav__toggle {
    display: block;
  }

  .nav__links {
    display: none;
    position: absolute;
    top: var(--nav-height);
    left: 0;
    right: 0;
    flex-direction: column;
    background-color: rgba(10, 10, 10, 0.97);
    backdrop-filter: blur(12px);
    padding: var(--space-lg) var(--space-xl);
    border-bottom: 1px solid var(--border-subtle);
    gap: var(--space-md);
  }

  .nav__links.open {
    display: flex;
  }

  .nav__links a {
    font-size: var(--size-base);
    padding: var(--space-sm) 0;
  }

  .section {
    padding: var(--space-4xl) 0;
  }

  .container {
    padding: 0 var(--space-lg);
  }
}