/* ============================================
   NAV.CSS — Grind Health Club
   ============================================ */

.site-header {
  position: sticky;
  top: 0;
  z-index: 200;
  background: rgba(10,10,10,0.96);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--color-border);
  transition: border-color var(--transition), box-shadow var(--transition);
}
.site-header.scrolled {
  border-color: var(--color-orange);
  box-shadow: 0 0 30px rgba(255,77,0,0.1);
}

.nav-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 68px;
  gap: var(--space-6);
}

/* Logo */
.nav-logo {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  text-decoration: none;
  flex-shrink: 0;
}
.nav-logo__icon { width: 42px; height: 42px; flex-shrink: 0; }
.nav-logo__text { display: flex; flex-direction: column; line-height: 1.1; }
.nav-logo__name {
  font-family: var(--font-display);
  font-size: 1.15rem;
  font-weight: 900;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--color-white);
}
.nav-logo__name span { color: var(--color-orange); }
.nav-logo__sub {
  font-size: 0.6rem;
  font-weight: 700;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--color-text-muted);
}

/* Nav Links */
.nav-links {
  display: flex;
  align-items: center;
  gap: var(--space-1);
  list-style: none;
  flex-wrap: nowrap;
}
.nav-links > li > a,
.nav-dropdown__toggle {
  font-family: var(--font-display);
  font-size: 0.85rem;
  font-weight: 700;
  letter-spacing: 0.07em;
  text-transform: uppercase;
  color: var(--color-text-muted);
  padding: 0.45rem 0.6rem;
  border-radius: var(--radius-sm);
  text-decoration: none;
  transition: color var(--transition), background var(--transition);
  white-space: nowrap;
}
.nav-links > li > a:hover,
.nav-links > li > a.active,
.nav-dropdown__toggle:hover {
  color: var(--color-orange);
  background: var(--color-orange-bg);
}

/* Dropdown */
.nav-dropdown { position: relative; }
.nav-dropdown__toggle {
  display: flex;
  align-items: center;
  gap: 4px;
  background: none;
  border: none;
  cursor: pointer;
  font-family: var(--font-display);
}
.nav-dropdown__chevron { transition: transform 250ms ease; }
.nav-dropdown.open .nav-dropdown__chevron { transform: rotate(180deg); }

.nav-dropdown__menu {
  position: absolute;
  top: calc(100% + 8px);
  left: 50%;
  transform: translateX(-50%);
  min-width: 230px;
  background: var(--color-dark-2);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--space-2);
  display: none;
  z-index: 300;
  box-shadow: var(--shadow-dark);
}
.nav-dropdown.open .nav-dropdown__menu { display: block; }
.nav-dropdown__menu a {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  padding: 0.55rem 0.9rem;
  font-family: var(--font-display);
  font-size: 0.82rem;
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--color-text-muted);
  border-radius: var(--radius-sm);
  text-decoration: none;
  transition: color var(--transition), background var(--transition);
}
.nav-dropdown__menu a:hover {
  color: var(--color-orange);
  background: var(--color-orange-bg);
}

/* Nav Social + CTA */
.nav-actions {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  flex-shrink: 0;
}
.nav-social {
  display: flex;
  gap: var(--space-2);
}
.nav-social a {
  width: 32px;
  height: 32px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-text-muted);
  border-radius: var(--radius-sm);
  transition: color var(--transition), background var(--transition);
}
.nav-social a:hover {
  color: var(--color-orange);
  background: var(--color-orange-bg);
}

/* Mobile Toggle */
.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  padding: var(--space-2);
  background: none;
  border: none;
  cursor: pointer;
}
.nav-toggle__bar {
  width: 24px;
  height: 2px;
  background: var(--color-text);
  border-radius: 2px;
  transition: transform 300ms ease, opacity 200ms ease, background 200ms ease;
}
.nav-toggle.open .nav-toggle__bar:nth-child(1) { transform: translateY(7px) rotate(45deg); background: var(--color-orange); }
.nav-toggle.open .nav-toggle__bar:nth-child(2) { opacity: 0; }
.nav-toggle.open .nav-toggle__bar:nth-child(3) { transform: translateY(-7px) rotate(-45deg); background: var(--color-orange); }

/* Mobile Menu */
.nav-mobile {
  display: none;
  flex-direction: column;
  background: var(--color-dark);
  border-top: 1px solid var(--color-border);
  padding: var(--space-4) var(--space-6) var(--space-6);
  gap: 2px;
  max-height: 80vh;
  overflow-y: auto;
}
.nav-mobile.open { display: flex; }
.nav-mobile a,
.nav-mobile__group-toggle {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0.7rem var(--space-3);
  font-family: var(--font-display);
  font-size: 0.92rem;
  font-weight: 700;
  letter-spacing: 0.07em;
  text-transform: uppercase;
  color: var(--color-text-muted);
  text-decoration: none;
  border-radius: var(--radius-sm);
  transition: color var(--transition), background var(--transition);
  background: none;
  border: none;
  cursor: pointer;
  width: 100%;
  text-align: left;
  font-family: var(--font-display);
}
.nav-mobile a:hover, .nav-mobile a.active { color: var(--color-orange); background: var(--color-orange-bg); }
.nav-mobile__sub {
  display: none;
  flex-direction: column;
  gap: 2px;
  margin-left: var(--space-4);
  margin-top: 2px;
}
.nav-mobile__sub.open { display: flex; }
.nav-mobile__sub a { font-size: 0.8rem; padding: 0.5rem var(--space-3); }

.nav-mobile__cta {
  margin-top: var(--space-4);
  padding-top: var(--space-4);
  border-top: 1px solid var(--color-border);
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
}
.nav-mobile__socials {
  display: flex;
  gap: var(--space-3);
  padding: var(--space-2) 0;
}
.nav-mobile__socials a {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  font-size: var(--text-xs);
  font-weight: 600;
  color: var(--color-text-muted);
  text-transform: none;
  letter-spacing: 0;
  justify-content: flex-start;
  padding: 0.5rem var(--space-3);
}
.nav-mobile__socials a:hover { color: var(--color-orange); }

@media (max-width: 1024px) {
  .nav-links, .nav-actions .btn { display: none; }
  .nav-toggle { display: flex; }
}
@media (max-width: 480px) {
  .nav-social { display: none; }
}