/* ============================================
   XZL Layout CSS — Navbar + Footer
   Merged for performance: eliminates 2 HTTP requests
   ============================================ */

/* ============================================
   SECTION 1: Navbar
   ============================================ */
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: var(--nav-height);
  z-index: var(--z-nav);
  transition: all var(--duration-normal) var(--ease-out);
  display: flex;
  align-items: center;
}

.navbar--transparent { background: transparent; }

.navbar--scrolled {
  background: var(--bg-glass);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid rgba(26, 86, 50, 0.06);
  box-shadow: var(--shadow-sm);
}

.navbar--dark-initial .navbar__logo-text,
.navbar--dark-initial .navbar__link {
  color: var(--text-on-dark);
}

.navbar__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: 100%;
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 var(--space-6);
  height: 100%;
}

/* ---- Logo ---- */
.navbar__logo {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  flex-shrink: 0;
}

.navbar__logo-icon {
  width: 36px;
  height: 36px;
  border-radius: var(--radius-md);
  background: var(--gradient-primary);
  display: flex;
  align-items: center;
  justify-content: center;
  color: white;
  font-weight: 800;
  font-size: var(--text-sm);
  font-family: var(--font-display);
  letter-spacing: -0.02em;
}

.navbar__logo-text {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: var(--text-xl);
  color: var(--text-primary);
  letter-spacing: var(--tracking-tight);
}

.navbar__logo-text span { color: var(--color-primary); }

/* ---- Navigation Links ---- */
.navbar__links {
  display: flex;
  align-items: center;
  gap: var(--space-1);
}

.navbar__link {
  display: flex;
  align-items: center;
  gap: var(--space-1);
  padding: var(--space-2) var(--space-4);
  font-size: var(--text-sm);
  font-weight: 500;
  color: var(--text-secondary);
  border-radius: var(--radius-full);
  transition: all var(--duration-fast) var(--ease-out);
  position: relative;
}

.navbar__link:hover,
.navbar__link--active {
  color: var(--color-primary);
  background: rgba(26, 86, 50, 0.06);
}

.navbar__link--active::after {
  content: '';
  position: absolute;
  bottom: 2px;
  left: 50%;
  transform: translateX(-50%);
  width: 16px;
  height: 2px;
  background: var(--color-primary);
  border-radius: var(--radius-full);
}

.navbar__link svg { width: 18px; height: 18px; }

/* ---- Actions ---- */
.navbar__actions {
  display: flex;
  align-items: center;
  gap: var(--space-3);
}

.navbar__login {
  font-size: var(--text-sm);
  font-weight: 500;
  color: var(--text-secondary);
  padding: var(--space-2) var(--space-4);
  border-radius: var(--radius-full);
  transition: all var(--duration-fast) var(--ease-out);
}

.navbar__login:hover {
  color: var(--color-primary);
  background: rgba(26, 86, 50, 0.06);
}

/* ---- Mobile Menu Toggle ---- */
.navbar__toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 28px;
  height: 28px;
  cursor: pointer;
  padding: 2px;
}

.navbar__toggle span {
  display: block;
  width: 100%;
  height: 2px;
  background: var(--text-primary);
  border-radius: var(--radius-full);
  transition: all var(--duration-normal) var(--ease-out);
}

.navbar__toggle.active span:nth-child(1) { transform: rotate(45deg) translate(5px, 5px); }
.navbar__toggle.active span:nth-child(2) { opacity: 0; }
.navbar__toggle.active span:nth-child(3) { transform: rotate(-45deg) translate(5px, -5px); }

/* ---- Mobile Menu ---- */
.navbar__mobile {
  display: none;
  position: fixed;
  top: var(--nav-height);
  left: 0;
  right: 0;
  bottom: 0;
  max-height: calc(100dvh - var(--nav-height));
  background: #FFFFFF;
  z-index: var(--z-nav);
  padding: var(--space-6);
  padding-bottom: calc(var(--space-8) + env(safe-area-inset-bottom, 0px));
  overflow-y: auto;
  -webkit-overflow-scrolling: touch;
  animation: fadeInDown var(--duration-normal) var(--ease-out);
  box-shadow: 0 -8px 40px rgba(15, 31, 21, 0.12);
}

.navbar__mobile::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: var(--gradient-primary);
}

.navbar__mobile.active {
  display: flex;
  flex-direction: column;
}

/* 提高特异性 (0,3,0) */
.navbar .navbar__mobile .navbar__link {
  display: flex;
  align-items: center;
  gap: var(--space-4);
  width: 100%;
  padding: var(--space-5) var(--space-4);
  font-size: 1.125rem;
  font-weight: 600;
  color: var(--text-primary);
  border-radius: var(--radius-lg);
  transition: all var(--duration-fast) var(--ease-out);
  -webkit-tap-highlight-color: transparent;
  position: relative;
}

.navbar .navbar__mobile .navbar__link svg {
  width: 22px;
  height: 22px;
  color: var(--color-primary);
  opacity: 0.7;
  flex-shrink: 0;
}

.navbar .navbar__mobile .navbar__link:active {
  background: rgba(26, 86, 50, 0.08);
  transform: scale(0.98);
}

.navbar .navbar__mobile .navbar__link--active {
  background: rgba(26, 86, 50, 0.08);
  color: var(--color-primary);
}

.navbar .navbar__mobile .navbar__link--active svg { opacity: 1; }

.navbar .navbar__mobile .navbar__link--active::after {
  content: '';
  position: absolute;
  right: var(--space-4);
  top: 50%;
  transform: translateY(-50%);
  width: 8px;
  height: 8px;
  background: var(--color-primary);
  border-radius: var(--radius-full);
}

.navbar__mobile .navbar__actions {
  margin-top: auto;
  padding-top: var(--space-6);
  border-top: 1px solid var(--bg-tertiary);
  flex-direction: column;
  gap: var(--space-3);
}

.navbar__mobile .navbar__actions .btn {
  width: 100%;
  padding: var(--space-4);
  font-size: 1rem;
  font-weight: 600;
  border-radius: var(--radius-lg);
  -webkit-tap-highlight-color: transparent;
}

/* ---- Responsive ---- */
@media (max-width: 768px) {
  .navbar__links { display: none; }
  .navbar__actions .navbar__login,
  .navbar__actions .btn { display: none; }
  .navbar__actions { display: flex; }
  .navbar__toggle {
    display: flex;
    width: 44px;
    height: 44px;
    align-items: center;
    justify-content: center;
    -webkit-tap-highlight-color: transparent;
  }
}

/* ============================================
   SECTION 2: Footer
   ============================================ */
.footer {
  background: var(--bg-dark);
  color: var(--text-on-dark);
  padding: var(--space-20) 0 var(--space-8);
}

.footer__top {
  display: grid;
  grid-template-columns: 1.5fr 1fr 1fr 1fr;
  gap: var(--space-12);
  padding-bottom: var(--space-12);
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}

.footer__brand { max-width: 320px; }

.footer__brand-logo {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  margin-bottom: var(--space-5);
}

.footer__brand-icon {
  width: 36px;
  height: 36px;
  border-radius: var(--radius-md);
  background: var(--gradient-primary);
  display: flex;
  align-items: center;
  justify-content: center;
  color: white;
  font-weight: 800;
  font-size: var(--text-sm);
  font-family: var(--font-display);
}

.footer__brand-name {
  font-family: var(--font-display);
  font-size: var(--text-xl);
  font-weight: 700;
  color: var(--text-on-dark);
}

.footer__brand-name span { color: var(--color-primary-light); }

.footer__brand-desc {
  font-size: var(--text-sm);
  color: rgba(255, 255, 255, 0.5);
  line-height: var(--leading-relaxed);
  margin-bottom: var(--space-6);
}

.footer__social { display: flex; gap: var(--space-3); }

.footer__social-link {
  width: 36px;
  height: 36px;
  border-radius: var(--radius-full);
  border: 1px solid rgba(255, 255, 255, 0.1);
  display: flex;
  align-items: center;
  justify-content: center;
  color: rgba(255, 255, 255, 0.5);
  transition: all var(--duration-fast) var(--ease-out);
}

.footer__social-link:hover {
  border-color: var(--color-primary-light);
  color: var(--color-primary-light);
  background: rgba(46, 160, 98, 0.1);
}

.footer__social-link svg { width: 18px; height: 18px; }

.footer__column h4 {
  font-size: var(--text-sm);
  font-weight: 600;
  color: var(--text-on-dark);
  margin-bottom: var(--space-5);
  letter-spacing: var(--tracking-wide);
  text-transform: uppercase;
}

.footer__column ul { display: flex; flex-direction: column; gap: var(--space-3); }

.footer__column a {
  font-size: var(--text-sm);
  color: rgba(255, 255, 255, 0.45);
  transition: all var(--duration-fast) var(--ease-out);
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
}

.footer__column a:hover {
  color: var(--color-primary-light);
  transform: translateX(4px);
}

.footer__bottom {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-top: var(--space-8);
  flex-wrap: wrap;
  gap: var(--space-4);
}

.footer__copyright { font-size: var(--text-xs); color: rgba(255, 255, 255, 0.3); }

.footer__badges { display: flex; align-items: center; gap: var(--space-4); }

.footer__badge {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  font-size: var(--text-xs);
  color: rgba(255, 255, 255, 0.3);
  padding: var(--space-1) var(--space-3);
  border: 1px solid rgba(255, 255, 255, 0.06);
  border-radius: var(--radius-full);
}

.footer__badge svg { width: 14px; height: 14px; }

/* ---- Responsive ---- */
@media (max-width: 1024px) {
  .footer__top { grid-template-columns: 1fr 1fr; gap: var(--space-10); }
  .footer__brand { grid-column: 1 / -1; max-width: none; }
}

@media (max-width: 640px) {
  .footer__top { grid-template-columns: 1fr; gap: var(--space-8); }
  .footer__bottom { flex-direction: column; text-align: center; }
}