/* Layout Styles - 江苏金尔特纺织科技有限公司 */

/* Header */
.header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  background: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--color-border);
  transition: all var(--transition-normal);
}

.header.scrolled {
  box-shadow: var(--shadow-sm);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 90px;
}

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

.logo-icon {
  width: 40px;
  height: 40px;
  background: var(--color-primary);
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  color: white;
  font-size: 24px;
  font-weight: var(--font-weight-bold);
}

.logo-img {
  height: 50px;
  width: auto;
}

.logo-text {
  font-size: 18px;
  font-weight: var(--font-weight-semibold);
  color: var(--color-text);
}

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

/* Navigation */
.nav {
  display: flex;
  align-items: center;
  gap: var(--space-lg);
  justify-content: center;
  flex: 1;
}

.nav-link {
  font-size: var(--font-size-body);
  font-weight: var(--font-weight-medium);
  color: var(--color-text);
  padding: var(--space-xs) 0;
  position: relative;
  transition: color var(--transition-fast);
  white-space: nowrap;
}

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

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

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

/* Dropdown */
.nav-item {
  position: relative;
}

.nav-item > .nav-link {
  display: flex;
  align-items: center;
  gap: 4px;
}

.nav-item > .nav-link::before {
  content: '';
  display: inline-block;
  width: 0;
  height: 0;
  border-left: 4px solid transparent;
  border-right: 4px solid transparent;
  border-top: 4px solid currentColor;
  transition: transform var(--transition-fast);
}

.nav-item:hover > .nav-link::before {
  transform: rotate(180deg);
}

.nav-dropdown {
  position: absolute;
  top: 100%;
  left: 50%;
  transform: translateX(-50%) translateY(8px);
  min-width: 160px;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-md);
  opacity: 0;
  visibility: hidden;
  transition: all var(--transition-normal);
  padding: var(--space-xs) 0;
  z-index: 1002;
}

.nav-item:hover .nav-dropdown {
  opacity: 1;
  visibility: visible;
  transform: translateX(-50%) translateY(0);
}

.nav-dropdown-link {
  display: block;
  padding: 10px 20px;
  font-size: var(--font-size-caption);
  color: var(--color-text);
  transition: all var(--transition-fast);
  white-space: nowrap;
}

.nav-dropdown-link:hover {
  background: var(--color-primary-light);
  color: var(--color-primary);
}

/* Header CTA */
.header-cta {
  display: inline-flex;
  align-items: center;
  padding: var(--space-xs) var(--space-md);
  background: var(--color-primary);
  color: white;
  font-size: var(--font-size-caption);
  font-weight: var(--font-weight-medium);
  border-radius: var(--radius-sm);
  transition: all var(--transition-fast);
}

.header-cta:hover {
  background: var(--color-primary-dark);
  color: white;
  transform: translateY(-1px);
}

/* Hide nav-toggle on desktop */
.nav-toggle {
  display: none;
}

/* Mobile Menu Toggle */
.menu-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  padding: var(--space-xs);
}

.menu-toggle span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--color-text);
  transition: all var(--transition-fast);
}

.menu-toggle.active span:nth-child(1) {
  transform: rotate(45deg) translate(5px, 5px);
}

.menu-toggle.active span:nth-child(2) {
  opacity: 0;
}

.menu-toggle.active span:nth-child(3) {
  transform: rotate(-45deg) translate(5px, -5px);
}

/* Mobile Navigation */
@media (max-width: 1024px) {
  .nav {
    position: fixed;
    top: 90px;
    left: 0;
    right: 0;
    bottom: 0;
    flex-direction: column;
    align-items: stretch;
    background: var(--color-surface);
    padding: var(--space-lg);
    gap: 0;
    transform: translateX(100%);
    transition: transform var(--transition-normal);
    overflow-y: auto;
    z-index: 1001;
    width: 100%;
    min-height: calc(100vh - 90px);
    flex: none;
  }

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

  .nav-link {
    display: block;
    padding: var(--space-md) 0;
    border-bottom: 1px solid var(--color-border);
    font-size: var(--font-size-h3);
    color: var(--color-text);
    white-space: normal;
    word-break: break-word;
  }

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

  .nav-item > .nav-link::before {
    display: none !important;
  }

  .nav-toggle {
    position: absolute;
    right: 0;
    top: 50%;
    transform: translateY(-50%);
    width: 30px;
    height: 30px;
    background: none;
    border: none;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 0;
    z-index: 10;
  }

  .nav-toggle::after {
    content: '>';
    font-size: 20px;
    font-weight: bold;
    color: #666;
    transition: transform 0.2s ease;
  }

  .nav-item.open > .nav-toggle::after {
    transform: rotate(90deg);
  }

  .nav-item > .nav-link {
    position: relative;
    display: block;
    padding-right: 30px;
  }

  .nav-dropdown {
    position: static;
    opacity: 1 !important;
    visibility: visible !important;
    transform: none !important;
    box-shadow: none;
    border: none;
    padding-left: var(--space-md);
    display: none;
    background: transparent;
  }

  .nav-item.open .nav-dropdown {
    display: block;
  }

  .nav-dropdown-link {
    display: block !important;
    padding: 12px 0 !important;
    font-size: 16px !important;
    border-bottom: 1px solid var(--color-border);
    color: #1A1A2E !important;
    white-space: normal !important;
    visibility: visible !important;
    opacity: 1 !important;
  }

  .header-cta {
    display: block;
    margin-top: var(--space-md);
    text-align: center;
    padding: var(--space-sm);
  }

  .menu-toggle {
    display: flex;
  }
}

/* Footer */
.footer {
  background: var(--color-text);
  color: rgba(255, 255, 255, 0.8);
  padding: var(--space-3xl) 0 var(--space-lg);
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: var(--space-xl);
  margin-bottom: var(--space-xl);
}

.footer-brand {
  max-width: 300px;
}

.footer-logo {
  font-size: 20px;
  font-weight: 600;
  color: white;
  margin-bottom: var(--space-sm);
}

.footer-logo span {
  color: var(--color-primary);
}

.footer-brand p {
  font-size: var(--font-size-caption);
  line-height: var(--line-height-relaxed);
  color: rgba(255, 255, 255, 0.6);
}

.footer-title {
  font-size: var(--font-size-caption);
  font-weight: var(--font-weight-semibold);
  color: white;
  margin-bottom: var(--space-md);
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.footer-links {
  display: flex;
  flex-direction: column;
  gap: var(--space-sm);
}

.footer-link {
  font-size: var(--font-size-caption);
  color: rgba(255, 255, 255, 0.6);
  transition: color var(--transition-fast);
}

.footer-link:hover {
  color: white;
}

.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  padding-top: var(--space-lg);
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: var(--font-size-caption);
  color: rgba(255, 255, 255, 0.4);
}

@media (max-width: 768px) {
  .footer-grid {
    grid-template-columns: 1fr;
    gap: var(--space-lg);
  }

  .footer-bottom {
    flex-direction: column;
    gap: var(--space-sm);
    text-align: center;
  }
}