/* =====================================================
   Global Women's Foundation - Responsive + i18n Components
   Loaded AFTER styles.css. Adds:
   - Lang switcher dropdown (replaces static toggle)
   - Mobile drawer navigation
   - Tablet + mobile breakpoints
   - RTL support
   - Touch target improvements
   ===================================================== */

/* =====================================================
   1. Language Switcher Dropdown
   Design: pill trigger with colored code chip + soft dropdown
   ===================================================== */
.lang-switcher {
  position: relative;
  display: inline-flex;
  align-items: center;
}

.lang-switcher [data-lang-trigger] {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 5px 12px 5px 5px;
  border: 1px solid transparent;
  border-radius: 999px;
  background: transparent;
  color: var(--color-text);
  font-size: 13px;
  font-weight: 500;
  cursor: pointer;
  transition: all 200ms cubic-bezier(0.16, 1, 0.3, 1);
  min-height: 34px;
}
.lang-switcher [data-lang-trigger]:hover {
  border-color: var(--color-border);
  background: var(--color-bg-alt);
}
.lang-switcher [data-lang-trigger]:focus-visible {
  outline: 2px solid var(--color-primary);
  outline-offset: 2px;
}

.lang-trigger-code {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 36px;
  height: 24px;
  padding: 0 10px;
  border-radius: 999px;
  background: var(--color-primary);
  color: #fff;
  font-family: var(--font-sans);
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  box-shadow: 0 1px 2px rgba(0, 0, 0, 0.06);
}
.lang-trigger-label {
  color: var(--color-text);
  font-weight: 500;
  letter-spacing: 0.01em;
  white-space: nowrap;
  flex-shrink: 0;
}
.lang-trigger-caret {
  width: 10px;
  height: 10px;
  margin-left: 2px;
  transition: transform 250ms cubic-bezier(0.16, 1, 0.3, 1);
  opacity: 0.55;
}
.lang-switcher [data-lang-trigger][aria-expanded="true"] .lang-trigger-caret {
  transform: rotate(180deg);
  opacity: 0.9;
}

.lang-dropdown {
  position: absolute;
  top: calc(100% + 10px);
  right: 0;
  min-width: 224px;
  background: #fff;
  border: 1px solid var(--color-border-light, #E5E7EB);
  border-radius: 14px;
  box-shadow:
    0 12px 32px -8px rgba(15, 23, 42, 0.12),
    0 4px 12px -4px rgba(15, 23, 42, 0.06),
    0 0 0 1px rgba(15, 23, 42, 0.02);
  padding: 8px;
  list-style: none;
  margin: 0;
  opacity: 0;
  visibility: hidden;
  transform: translateY(-8px) scale(0.98);
  transition:
    opacity 200ms cubic-bezier(0.16, 1, 0.3, 1),
    transform 200ms cubic-bezier(0.16, 1, 0.3, 1),
    visibility 200ms;
  z-index: 200;
}
.lang-dropdown.is-open {
  opacity: 1;
  visibility: visible;
  transform: translateY(0) scale(1);
}

.lang-dropdown li { list-style: none; margin: 0; }
.lang-dropdown [data-lang-option] {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 10px 12px;
  border-radius: 10px;
  color: var(--color-text);
  font-size: 14px;
  cursor: pointer;
  transition: all 180ms cubic-bezier(0.16, 1, 0.3, 1);
  text-decoration: none;
  width: 100%;
  position: relative;
}
.lang-dropdown [data-lang-option]:hover {
  background: var(--color-bg-alt);
}
.lang-dropdown [data-lang-option].is-active {
  background: var(--color-primary-50);
  color: var(--color-primary);
}
.lang-dropdown [data-lang-option] .lang-flag {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 36px;
  height: 22px;
  padding: 0 10px;
  border-radius: 999px;
  background: var(--color-bg-alt);
  color: var(--color-text-light);
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  transition: all 180ms ease;
}
.lang-dropdown [data-lang-option].is-active .lang-flag {
  background: var(--color-primary);
  color: #fff;
  box-shadow: 0 1px 2px rgba(0, 0, 0, 0.06);
}
.lang-dropdown [data-lang-option] .lang-name-native {
  flex: 1;
  font-weight: 500;
}
.lang-dropdown [data-lang-option].is-active .lang-name-native {
  font-weight: 600;
}
.lang-dropdown [data-lang-option] .lang-name-en {
  font-size: 11px;
  color: var(--color-text-muted);
  margin-left: -4px;
}
.lang-dropdown [data-lang-option].is-active::after {
  content: "✓";
  color: var(--color-primary);
  font-weight: 700;
  font-size: 14px;
  margin-left: auto;
  animation: langCheckIn 280ms cubic-bezier(0.16, 1, 0.3, 1);
}
@keyframes langCheckIn {
  from { opacity: 0; transform: scale(0.5); }
  to { opacity: 1; transform: scale(1); }
}

/* =====================================================
   2. Mobile Menu Toggle (hamburger)
   ===================================================== */
.menu-toggle {
  display: none;
  position: relative;
  width: 40px;
  height: 40px;
  padding: 0;
  border: 1px solid var(--color-border);
  border-radius: 6px;
  background: transparent;
  cursor: pointer;
  align-items: center;
  justify-content: center;
  transition: border-color 200ms ease;
}
.menu-toggle:hover {
  border-color: var(--color-primary);
}
.menu-toggle:focus-visible {
  outline: 2px solid var(--color-primary);
  outline-offset: 2px;
}
.menu-toggle-icon,
.menu-toggle-icon::before,
.menu-toggle-icon::after {
  content: '';
  display: block;
  width: 18px;
  height: 2px;
  background: var(--color-text);
  transition: all 250ms ease;
  border-radius: 1px;
}
.menu-toggle-icon {
  position: relative;
}
.menu-toggle-icon::before {
  position: absolute;
  top: -6px;
  left: 0;
}
.menu-toggle-icon::after {
  position: absolute;
  top: 6px;
  left: 0;
}
/* Animated state when open */
.menu-toggle.is-open .menu-toggle-icon {
  background: transparent;
}
.menu-toggle.is-open .menu-toggle-icon::before {
  top: 0;
  transform: rotate(45deg);
  background: var(--color-primary);
}
.menu-toggle.is-open .menu-toggle-icon::after {
  top: 0;
  transform: rotate(-45deg);
  background: var(--color-primary);
}

/* =====================================================
   3. Mobile Drawer
   ===================================================== */
.mobile-overlay {
  position: fixed;
  inset: 0;
  background: rgba(15, 38, 64, 0.5);
  backdrop-filter: blur(4px);
  opacity: 0;
  visibility: hidden;
  transition: all 280ms ease;
  z-index: 998;
}
.mobile-overlay.is-open {
  opacity: 1;
  visibility: visible;
}

.mobile-drawer {
  position: fixed;
  top: 0;
  right: 0;
  bottom: 0;
  width: min(360px, 88vw);
  background: var(--color-bg);
  box-shadow: -16px 0 48px rgba(15, 38, 64, 0.16);
  transform: translateX(100%);
  transition: transform 320ms cubic-bezier(0.22, 1, 0.36, 1);
  z-index: 999;
  display: flex;
  flex-direction: column;
  overflow: hidden;
}
.mobile-drawer.is-open {
  transform: translateX(0);
}
.mobile-drawer[aria-hidden="true"] {
  pointer-events: none;
}

/* RTL: slide from left */
[dir="rtl"] .mobile-drawer {
  right: auto;
  left: 0;
  transform: translateX(-100%);
  box-shadow: 16px 0 48px rgba(15, 38, 64, 0.16);
}
[dir="rtl"] .mobile-drawer.is-open {
  transform: translateX(0);
}

.mobile-drawer-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 16px 24px;
  border-bottom: 1px solid var(--color-border);
  flex-shrink: 0;
}
.mobile-drawer-header .logo {
  display: flex;
  align-items: center;
  gap: 10px;
}
.mobile-drawer-header .logo-text {
  font-size: 14px;
  font-weight: 600;
  color: var(--color-secondary);
}
.mobile-drawer-close {
  width: 36px;
  height: 36px;
  border-radius: 6px;
  background: transparent;
  border: 1px solid var(--color-border);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 20px;
  color: var(--color-text);
  cursor: pointer;
  transition: all 200ms ease;
}
.mobile-drawer-close:hover {
  border-color: var(--color-primary);
  background: var(--color-primary-50);
}

.mobile-drawer-nav {
  flex: 1;
  overflow-y: auto;
  padding: 12px 0;
  -webkit-overflow-scrolling: touch;
}
.mobile-drawer-nav a {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 14px 24px;
  color: var(--color-secondary);
  font-size: 16px;
  font-weight: 500;
  text-decoration: none;
  border-left: 3px solid transparent;
  transition: all 200ms ease;
  min-height: 48px; /* Touch target */
}
[dir="rtl"] .mobile-drawer-nav a {
  border-left: none;
  border-right: 3px solid transparent;
}
.mobile-drawer-nav a:hover,
.mobile-drawer-nav a.is-active {
  background: var(--color-primary-50);
  color: var(--color-primary);
  border-left-color: var(--color-primary);
}
[dir="rtl"] .mobile-drawer-nav a:hover,
[dir="rtl"] .mobile-drawer-nav a.is-active {
  border-right-color: var(--color-primary);
}
.mobile-drawer-nav a::after {
  content: '›';
  color: var(--color-text-muted);
  font-size: 18px;
  opacity: 0;
  transform: translateX(-4px);
  transition: all 200ms ease;
}
[dir="rtl"] .mobile-drawer-nav a::after {
  content: '‹';
  transform: translateX(4px);
}
.mobile-drawer-nav a:hover::after,
.mobile-drawer-nav a.is-active::after {
  opacity: 1;
  transform: translateX(0);
}

.mobile-drawer-cluster {
  font-size: 10px;
  font-weight: 700;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--color-text-muted);
  padding: 20px 24px 8px;
}

.mobile-drawer-footer {
  padding: 20px 24px;
  border-top: 1px solid var(--color-border);
  background: var(--color-bg-alt);
  flex-shrink: 0;
}
.mobile-drawer-footer .btn {
  width: 100%;
  margin-bottom: 12px;
}
.mobile-drawer-footer .lang-switcher {
  width: 100%;
}
.mobile-drawer-footer .lang-switcher [data-lang-trigger] {
  width: 100%;
  justify-content: space-between;
}
.mobile-drawer-footer .lang-dropdown {
  bottom: calc(100% + 6px);
  top: auto;
  width: 100%;
}

/* =====================================================
   4. Responsive Breakpoints
   ===================================================== */

/* Large desktop: ≥1280px — full nav, no changes */

/* Laptop / small desktop: 1200-1299px — nav still horizontal but tighter */
@media (max-width: 1299px) and (min-width: 1200px) {
  .main-nav { gap: var(--space-5); }
  .main-nav a { font-size: 0.875rem; }
  .main-nav .nav-group { gap: 1px; padding: 0 var(--space-2); }

  /* 14" 笔记本：lang-switcher 直接隐藏在 header，用户从汉堡菜单切换 */
  .header-actions .lang-switcher { display: none; }

  /* Donate 按钮紧凑 */
  .header-actions { gap: var(--space-2); flex-shrink: 0; }
  .header-actions .btn { padding: 8px 14px; font-size: 0.8125rem; }
}

/* ≥1300px：完整 lang-switcher 恢复 */
@media (min-width: 1300px) {
  .header-actions .lang-switcher { display: inline-flex; }
}

/* Tablet landscape: 1199px and below — switch to mobile drawer
   提到 1199 是因为 8 项 nav + actions 在 1100-1280 区间会挤变形 */
@media (max-width: 1199px) {
  .main-nav { display: none !important; }
  .header-actions .lang-switcher { display: none; }
  .menu-toggle { display: inline-flex; }

  /* Header layout adjustments */
  .site-header > .container {
    gap: var(--space-3);
  }
  .logo-text small { display: none; } /* Hide subtitle on tablet+ */
}

/* Tablet portrait: 768-1023px — drawer + adjustments */
@media (min-width: 768px) and (max-width: 1023px) {
  .container { padding: 0 var(--space-6); }
  .section { padding: var(--space-16) 0; }
  .section-title { font-size: clamp(1.5rem, 3vw, 2rem); }

  /* Hero adjustments */
  .hero-title { font-size: clamp(2rem, 5vw, 3rem); }

  /* Card grids: 2 cols */
  .card-grid.cols-3 { grid-template-columns: repeat(2, 1fr); }
  .card-grid.cols-4 { grid-template-columns: repeat(2, 1fr); }

  /* Footer: 2 cols */
  .footer-grid { grid-template-columns: 1fr 1fr; }
}

/* Mobile landscape / large phone: 481-767px */
@media (max-width: 767px) {
  :root {
    --header-height: 64px;
    --container-px: 1rem;
  }

  .container { padding: 0 1rem; }
  .section { padding: var(--space-12) 0; }
  .section-sm { padding: var(--space-8) 0; }
  .section-title { font-size: clamp(1.5rem, 6vw, 1.875rem); }

  /* Header */
  .site-header { height: var(--header-height); }
  .logo-mark { width: 36px; height: 36px; font-size: 1rem; }
  .logo-text { font-size: 14px; }

  /* Hero */
  .hero-title,
  h1 { font-size: clamp(1.875rem, 7vw, 2.5rem); line-height: 1.15; }
  .hero-eyebrow { font-size: 0.6875rem; }

  /* Buttons */
  .btn-lg { padding: var(--space-3) var(--space-6); font-size: 0.9375rem; }
  .btn { font-size: 0.875rem; padding: var(--space-3) var(--space-5); }

  /* Card grids: 1 col */
  .card-grid,
  .card-grid.cols-2,
  .card-grid.cols-3,
  .card-grid.cols-4 { grid-template-columns: 1fr; gap: var(--space-5); }

  /* Footer: 1 col */
  .footer-grid { grid-template-columns: 1fr; gap: var(--space-6); }

  /* News list */
  .news-row {
    grid-template-columns: 1fr;
    gap: var(--space-2);
    padding: var(--space-5) 0;
  }

  /* Tables */
  table { font-size: 0.875rem; }
  table th, table td { padding: var(--space-2) var(--space-3); }

  /* Article body */
  .article-body { font-size: 1rem; }
  .article-body .lead { font-size: 1.125rem; }

  /* Page header */
  .page-header { padding: var(--space-12) 0 var(--space-10); }
  .page-header h1 { font-size: clamp(1.75rem, 6vw, 2.25rem); }

  /* Dual header (section header with action on right) */
  .dual-header {
    flex-direction: column;
    align-items: flex-start;
    gap: var(--space-3);
  }

  /* KPI grid */
  .kpi-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: var(--space-3);
  }

  /* Pull quote */
  .pull-quote { padding: var(--space-8) var(--space-4); font-size: 1.25rem; }

  /* Donation form */
  .donate-amount-grid {
    grid-template-columns: repeat(3, 1fr) !important;
    gap: var(--space-2) !important;
  }
}

/* Mobile: ≤480px */
@media (max-width: 480px) {
  .kpi-grid { grid-template-columns: 1fr; }

  /* Hero CTA stack */
  .hero-cta-row { flex-direction: column; }
  .hero-cta-row .btn { width: 100%; }

  /* Hide certain decorative elements */
  .seal-stack { flex-direction: column; align-items: flex-start; }
}

/* =====================================================
   5. RTL Support
   ===================================================== */
[dir="rtl"] .main-nav { direction: rtl; }
[dir="rtl"] .footer-grid { direction: rtl; }
[dir="rtl"] .lang-dropdown {
  right: auto;
  left: 0;
}

/* =====================================================
   6. Accessibility helpers
   ===================================================== */
.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
}