/**
 * DEPRECATED: This stylesheet is no longer used as of 2025-11-11.
 * Homepage now uses the same hamburger menu pattern as exhibition pages.
 * See: /styles/main.css for the new navigation styles (.header-minimal, .floating-menu)
 *
 * This file can be safely deleted if no other pages reference it.
 *
 * ---
 *
 * Global Navigation Styles (OLD)
 * Consistent navigation across all pages
 */

/* ==================== Navigation Bar ==================== */
.global-nav {
  position: sticky;
  top: 0;
  z-index: var(--z-nav);
  background: var(--color-white);
  border-bottom: 1px solid var(--color-border);
  box-shadow: var(--shadow-nav);
}

.nav-container {
  max-width: 1400px;
  margin: 0 auto;
  padding: 0 1rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 64px;
}

/* ==================== Logo ==================== */
.nav-logo {
  text-decoration: none;
  color: #B85C3C;
  font-weight: 900;
  font-size: 1.5rem;
  letter-spacing: 0.05em;
  transition: color 0.2s ease;
}

.nav-logo:hover {
  color: #D4A574;
}

.logo-text {
  display: inline-block;
}

/* ==================== Toggle Button (Mobile) ==================== */
.nav-toggle {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  padding: 0.5rem;
  position: relative;
  z-index: 1001;
}

.hamburger-icon {
  display: flex;
  flex-direction: column;
  gap: 4px;
  width: 24px;
}

.hamburger-icon span {
  display: block;
  width: 100%;
  height: 2px;
  background: #2d2d2d;
  transition: all 0.3s ease;
}

/* Hamburger animation when open */
.nav-toggle[aria-expanded="true"] .hamburger-icon span:nth-child(1) {
  transform: translateY(6px) rotate(45deg);
}

.nav-toggle[aria-expanded="true"] .hamburger-icon span:nth-child(2) {
  opacity: 0;
}

.nav-toggle[aria-expanded="true"] .hamburger-icon span:nth-child(3) {
  transform: translateY(-6px) rotate(-45deg);
}

/* ==================== Navigation Menu ==================== */
.nav-menu {
  display: flex;
  align-items: center;
  gap: 2rem;
}

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

.nav-link {
  text-decoration: none;
  color: #2d2d2d;
  font-weight: 500;
  font-size: 1rem;
  padding: 0.5rem 0;
  position: relative;
  transition: color 0.2s ease;
}

.nav-link:hover {
  color: #B85C3C;
}

/* Active link indicator */
.nav-link.active {
  color: #B85C3C;
}

.nav-link.active::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  height: 2px;
  background: #B85C3C;
}

/* ==================== Navigation Actions ==================== */
.nav-actions {
  display: flex;
  gap: 1rem;
  align-items: center;
}

.lang-toggle {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.5rem 1rem;
  background: var(--color-light);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  cursor: pointer;
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-semibold);
  color: var(--color-dark);
  transition: var(--transition-base);
}

.lang-toggle:hover {
  background: #e8e8e8;
  border-color: var(--color-primary);
  box-shadow: var(--shadow-sm);
}

.lang-current {
  font-family: monospace;
  letter-spacing: 0.05em;
}

.lang-icon {
  font-size: 1.2rem;
}

/* ==================== Language Toggle Support ==================== */
[lang="en"] {
  display: none !important;
}

html[lang="en"] [lang="zh"] {
  display: none !important;
}

html[lang="en"] [lang="en"] {
  display: inline !important;
}

/* ==================== Responsive Design ==================== */

/* Tablet and below */
@media (max-width: 768px) {
  .nav-toggle {
    display: block;
  }

  .nav-menu {
    position: fixed;
    top: 0;
    right: 0;
    bottom: 0;
    width: 280px;
    max-width: 80%;
    background: #fff;
    box-shadow: -2px 0 8px rgba(0, 0, 0, 0.1);
    transform: translateX(100%);
    transition: transform 0.3s ease;
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    padding: 80px 2rem 2rem;
    overflow-y: auto;
  }

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

  .nav-links {
    flex-direction: column;
    gap: 0;
  }

  .nav-link {
    padding: 1rem 0;
    border-bottom: 1px solid #f0f0f0;
    font-size: 1.1rem;
  }

  .nav-link.active::after {
    display: none;
  }

  .nav-link.active {
    background: #f9f9f9;
    padding-left: 1rem;
    margin-left: -1rem;
    padding-right: 1rem;
    margin-right: -1rem;
  }

  .nav-actions {
    margin-top: 2rem;
    padding-top: 2rem;
    border-top: 1px solid #f0f0f0;
  }

  .lang-toggle {
    width: 100%;
    justify-content: center;
  }

  /* Prevent body scroll when menu open */
  body.nav-open {
    overflow: hidden;
  }

  /* Overlay when menu open */
  body.nav-open::before {
    content: '';
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.3);
    z-index: 999;
  }
}

/* Mobile */
@media (max-width: 480px) {
  .nav-container {
    height: 56px;
  }

  .nav-logo {
    font-size: 1.25rem;
  }

  .nav-menu {
    width: 100%;
    max-width: 100%;
  }
}