/* ============================================
   Zala Lounge — Layout
   Header, footer, navigation, floating buttons
   ============================================ */

/* ---------- Header ---------- */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  padding: 1rem 0;
  background-color: transparent;
  transition: background-color var(--transition), padding var(--transition), box-shadow var(--transition);
}

.site-header.is-scrolled {
  background-color: rgba(15, 15, 15, 0.92);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  padding: 0.5rem 0;
  box-shadow: var(--shadow-soft);
  border-bottom: 1px solid var(--color-border);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1.5rem;
}

.brand {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  flex-shrink: 0;
}

.brand img {
  height: 56px;
  width: auto;
  transition: height var(--transition);
}

.site-header.is-scrolled .brand img {
  height: 44px;
}

.brand-name {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1.1rem;
  letter-spacing: 0.04em;
  color: var(--color-text);
}

/* ---------- Nav ---------- */
.main-nav {
  display: flex;
  align-items: center;
  gap: 2rem;
}

.nav-list {
  list-style: none;
  display: flex;
  align-items: center;
  gap: 2rem;
  margin: 0;
  padding: 0;
}

.nav-link {
  color: var(--color-text);
  font-weight: 500;
  font-size: 0.95rem;
  letter-spacing: 0.03em;
  position: relative;
  padding: 0.5rem 0;
}

.nav-link::after {
  content: '';
  position: absolute;
  left: 0;
  bottom: 0;
  width: 0;
  height: 2px;
  background-color: var(--color-accent);
  transition: width var(--transition);
}

.nav-link:hover,
.nav-link.is-active {
  color: var(--color-accent);
}

.nav-link:hover::after,
.nav-link.is-active::after {
  width: 100%;
}

/* ---------- Language Switcher ---------- */
.lang-switcher {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.9rem;
  font-weight: 500;
}

.lang-switcher a {
  padding: 0.35rem 0.6rem;
  border-radius: var(--radius-sm);
  color: var(--color-muted);
  border: 1px solid transparent;
  transition: color var(--transition), border-color var(--transition);
}

.lang-switcher a:hover {
  color: var(--color-text);
}

.lang-switcher a.is-active {
  color: var(--color-accent);
  border-color: var(--color-accent);
}

.lang-divider {
  color: var(--color-border);
}

/* ---------- Hamburger ---------- */
.hamburger {
  display: none;
  width: 44px;
  height: 44px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  background-color: rgba(0, 0, 0, 0.3);
  align-items: center;
  justify-content: center;
  flex-direction: column;
  gap: 5px;
  transition: background-color var(--transition);
}

.hamburger span {
  width: 22px;
  height: 2px;
  background-color: var(--color-text);
  transition: transform var(--transition), opacity var(--transition);
  border-radius: 2px;
}

.hamburger[aria-expanded="true"] span:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}
.hamburger[aria-expanded="true"] span:nth-child(2) {
  opacity: 0;
}
.hamburger[aria-expanded="true"] span:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

/* ---------- Mobile Nav ---------- */
@media (max-width: 1023px) {
  .hamburger { display: flex; }

  .main-nav {
    position: fixed;
    top: 0;
    right: 0;
    bottom: 0;
    width: min(320px, 85vw);
    background-color: var(--color-surface);
    border-left: 1px solid var(--color-border);
    flex-direction: column;
    align-items: flex-start;
    justify-content: flex-start;
    padding: 6rem 2rem 2rem;
    gap: 2rem;
    transform: translateX(105%);
    transition: transform var(--transition);
    box-shadow: var(--shadow-strong);
  }

  .main-nav.is-open {
    transform: translateX(0);
  }

  .nav-list {
    flex-direction: column;
    align-items: flex-start;
    gap: 1.25rem;
    width: 100%;
  }

  .nav-link {
    font-size: 1.15rem;
  }

  .lang-switcher {
    padding-top: 1.5rem;
    border-top: 1px solid var(--color-border);
    width: 100%;
  }

  body.nav-open {
    overflow: hidden;
  }

  body.nav-open::after {
    content: '';
    position: fixed;
    inset: 0;
    background-color: rgba(0, 0, 0, 0.5);
    z-index: 90;
  }
}

/* ---------- Footer ---------- */
.site-footer {
  background-color: var(--color-surface);
  border-top: 1px solid var(--color-border);
  padding: 4rem 0 2rem;
  margin-top: 4rem;
}

.footer-grid {
  display: grid;
  gap: 2.5rem;
  grid-template-columns: 1fr;
  margin-bottom: 2.5rem;
}

@media (min-width: 768px) {
  .footer-grid {
    grid-template-columns: 1.5fr 1fr 1fr;
    align-items: start;
  }
}

.footer-brand img {
  height: 64px;
  margin-bottom: 1rem;
}

.footer-tagline {
  font-family: var(--font-display);
  font-style: italic;
  color: var(--color-muted);
  margin: 0;
  max-width: 320px;
}

.footer-title {
  font-family: var(--font-body);
  font-size: 0.85rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--color-accent);
  margin-bottom: 1rem;
}

.footer-links {
  list-style: none;
  padding: 0;
  margin: 0;
  display: flex;
  flex-direction: column;
  gap: 0.6rem;
}

.footer-links a {
  color: var(--color-text);
  font-size: 0.95rem;
}

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

.footer-social {
  display: flex;
  gap: 0.75rem;
  list-style: none;
  padding: 0;
  margin: 0;
}

.footer-social a {
  display: inline-flex;
  width: 42px;
  height: 42px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-full);
  align-items: center;
  justify-content: center;
  color: var(--color-text);
  transition: background-color var(--transition), border-color var(--transition), color var(--transition);
}

.footer-social a:hover {
  background-color: var(--color-accent);
  color: var(--color-bg);
  border-color: var(--color-accent);
}

.footer-social svg {
  width: 18px;
  height: 18px;
}

.footer-bottom {
  padding-top: 2rem;
  border-top: 1px solid var(--color-border);
  text-align: center;
  font-size: 0.85rem;
  color: var(--color-muted);
}

/* ---------- Floating Action Buttons ---------- */
.fab-stack {
  position: fixed;
  right: 1rem;
  bottom: 1rem;
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
  z-index: 80;
}

@media (min-width: 768px) {
  .fab-stack {
    right: 1.5rem;
    bottom: 1.5rem;
  }
}

.fab {
  position: relative;
  display: inline-flex;
  width: 54px;
  height: 54px;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius-full);
  background-color: var(--color-surface);
  color: var(--color-text);
  box-shadow: var(--shadow-strong);
  border: 1px solid var(--color-border);
  transition: transform var(--transition), background-color var(--transition);
}

.fab:hover {
  transform: translateY(-3px) scale(1.05);
  color: var(--color-text);
}

.fab svg {
  width: 24px;
  height: 24px;
}

.fab--instagram:hover {
  background: linear-gradient(135deg, #f09433, #e6683c, #dc2743, #cc2366, #bc1888);
  color: #fff;
}

.fab--whatsapp:hover {
  background-color: #25D366;
  color: #fff;
}

.fab[data-tooltip]::before {
  content: attr(data-tooltip);
  position: absolute;
  right: calc(100% + 0.75rem);
  top: 50%;
  transform: translateY(-50%);
  background-color: var(--color-surface);
  color: var(--color-text);
  padding: 0.4rem 0.75rem;
  border-radius: var(--radius-sm);
  font-size: 0.8rem;
  white-space: nowrap;
  opacity: 0;
  pointer-events: none;
  transition: opacity var(--transition);
  box-shadow: var(--shadow-soft);
}

.fab[data-tooltip]:hover::before {
  opacity: 1;
}

/* Spacing for fixed header on inner pages */
.page-with-header {
  padding-top: var(--header-height);
}