/* =====================================================================
   SITE HEADER  —  sticky, glass, refined
   ===================================================================== */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  height: var(--header-height);
  background: rgba(23, 23, 18, 0.65);
  backdrop-filter: saturate(180%) blur(14px);
  -webkit-backdrop-filter: saturate(180%) blur(14px);
  border-bottom: 1px solid transparent;
  transition: background var(--transition-base), border-color var(--transition-base);
}
.site-header.is-scrolled {
  background: rgba(23, 23, 18, 0.85);
  border-bottom-color: var(--color-border);
}

.site-header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 100%;
}

.site-logo {
  display: inline-flex;
  align-items: center;
  gap: var(--space-1);
}
.site-logo__icon {
  width: 32px;
  height: 32px;
  border-radius: 8px;
}
.site-logo__text {
  font-family: var(--font-display);
  font-size: var(--text-xl);
  font-weight: var(--weight-bold);
  letter-spacing: -0.02em;
  color: var(--color-text);
  font-variation-settings: "opsz" 144, "SOFT" 30;
}
.site-logo__mark {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--color-gold);
  margin-left: 6px;
  box-shadow: var(--glow-gold);
}

/* Nav toggle (mobile) */
.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: var(--space-1);
}
.nav-toggle__bar {
  display: block;
  width: 22px;
  height: 1.5px;
  background-color: var(--color-text);
  transition: transform var(--transition-base), opacity var(--transition-base);
}
.nav-toggle.is-open .nav-toggle__bar:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.nav-toggle.is-open .nav-toggle__bar:nth-child(2) { opacity: 0; }
.nav-toggle.is-open .nav-toggle__bar:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* Nav */
.site-nav__list {
  display: flex;
  gap: var(--space-5);
  align-items: center;
}
.site-nav__link {
  position: relative;
  color: var(--color-text-muted);
  font-family: var(--font-body);
  font-size: var(--text-xs);
  font-weight: var(--weight-medium);
  text-transform: uppercase;
  letter-spacing: var(--tracking-wide);
  transition: color var(--transition-fast);
  padding: 4px 0;
}
.site-nav__link::after {
  content: "";
  position: absolute;
  left: 50%;
  bottom: -2px;
  width: 4px;
  height: 4px;
  background: var(--color-gold);
  border-radius: 50%;
  transform: translateX(-50%) scale(0);
  transition: transform var(--transition-fast);
}
.site-nav__link:hover,
.site-nav__link.is-active {
  color: var(--color-text);
}
.site-nav__link.is-active::after { transform: translateX(-50%) scale(1); }

.site-nav__cta { margin-left: var(--space-2); }

/* =====================================================================
   SITE FOOTER
   ===================================================================== */
.site-footer {
  background: var(--color-bg-alt);
  border-top: 1px solid var(--color-border);
  padding: var(--space-10) 0 var(--space-4);
  position: relative;
}
.site-footer::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--color-gold), transparent);
  opacity: 0.4;
}

.site-footer__grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: var(--space-6);
  margin-bottom: var(--space-6);
}
.site-footer__tagline {
  color: var(--color-text-muted);
  margin-top: var(--space-2);
  font-size: var(--text-sm);
  max-width: 320px;
}
.site-footer__heading {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  font-weight: var(--weight-medium);
  text-transform: uppercase;
  letter-spacing: var(--tracking-widest);
  color: var(--color-gold);
  margin-bottom: var(--space-2);
}
.site-footer__nav ul { display: flex; flex-direction: column; gap: var(--space-1); }
.site-footer__nav a { color: var(--color-text-muted); font-size: var(--text-sm); }
.site-footer__nav a:hover { color: var(--color-text); }

.social-links { display: flex; gap: var(--space-2); }
.social-links img { opacity: 0.6; transition: opacity var(--transition-fast); }
.social-links a:hover img { opacity: 1; }

.site-footer__bottom {
  border-top: 1px solid var(--color-border);
  padding-top: var(--space-3);
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: var(--space-2);
  color: var(--color-text-subtle);
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  letter-spacing: var(--tracking-wide);
  text-transform: uppercase;
}
.site-footer__bottom-mark {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--color-gold);
  display: inline-block;
  margin-right: 6px;
  vertical-align: middle;
}

/* =====================================================================
   GRID HELPERS
   ===================================================================== */
.grid { display: grid; gap: var(--space-4); }
.grid--2 { grid-template-columns: repeat(2, 1fr); }
.grid--3 { grid-template-columns: repeat(3, 1fr); }
.grid--4 { grid-template-columns: repeat(4, 1fr); }

/* =====================================================================
   RESPONSIVE
   ===================================================================== */
@media (max-width: 1024px) {
  .site-footer__grid { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 768px) {
  .nav-toggle { display: flex; }
  .site-nav {
    /* .site-header's backdrop-filter makes it the containing block for
       fixed children, so size against the viewport explicitly. */
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    height: calc(100vh - var(--header-height));
    height: calc(100dvh - var(--header-height));
    overflow-y: auto;
    background: rgba(23, 23, 18, 0.98);
    backdrop-filter: blur(14px);
    padding: var(--space-4);
    transform: translateX(100%);
    transition: transform var(--transition-base);
  }
  .site-nav.is-open { transform: translateX(0); }
  .site-nav__list { flex-direction: column; gap: var(--space-3); align-items: flex-start; }
  .site-nav__link { font-size: var(--text-lg); }
  .site-nav__cta { margin-left: 0; margin-top: var(--space-2); }
  .site-footer__grid { grid-template-columns: 1fr; gap: var(--space-4); }
  .site-footer__bottom { flex-direction: column; gap: var(--space-1); text-align: center; }
  .grid--2, .grid--3, .grid--4 { grid-template-columns: 1fr; }
}

@media (min-width: 769px) and (max-width: 1024px) {
  .grid--3 { grid-template-columns: repeat(2, 1fr); }
  .grid--4 { grid-template-columns: repeat(2, 1fr); }
}