/* ==========================================================================
   PureNest Cleaning — Layout, Header, Navigation & Footer Styles
   ========================================================================== */

/* --- Container Wrappers --- */
.container {
  width: 100%;
  max-width: var(--container-max);
  margin-left: auto;
  margin-right: auto;
  padding-left: clamp(1rem, 3vw, 2rem);
  padding-right: clamp(1rem, 3vw, 2rem);
  box-sizing: border-box;
}

.container-narrow {
  width: 100%;
  max-width: var(--container-narrow);
  margin-left: auto;
  margin-right: auto;
  padding-left: clamp(1rem, 3vw, 2rem);
  padding-right: clamp(1rem, 3vw, 2rem);
  box-sizing: border-box;
}

/* --- Section Spacing --- */
.section {
  padding-top: clamp(3.5rem, 6vw, 6rem);
  padding-bottom: clamp(3.5rem, 6vw, 6rem);
  position: relative;
}

.section-sm {
  padding-top: clamp(2.5rem, 4vw, 4rem);
  padding-bottom: clamp(2.5rem, 4vw, 4rem);
}

.section-lg {
  padding-top: clamp(4.5rem, 8vw, 7.5rem);
  padding-bottom: clamp(4.5rem, 8vw, 7.5rem);
}

.section-alt {
  background-color: var(--color-bg-alt);
}

.section-subtle {
  background-color: var(--slate-100);
}

.section-dark {
  background-color: var(--primary-950);
  color: var(--slate-200);
}

.section-dark h1,
.section-dark h2,
.section-dark h3,
.section-dark h4 {
  color: var(--white);
}

/* --- Section Header & Typography --- */
.section-header {
  text-align: center;
  max-width: 680px;
  margin-left: auto;
  margin-right: auto;
  margin-bottom: clamp(2.5rem, 4vw, 3.5rem);
}

.section-header-left {
  text-align: left;
  margin-left: 0;
  margin-right: 0;
}

.section-kicker {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: var(--text-xs);
  font-weight: var(--font-bold);
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--primary-700);
  background-color: var(--primary-50);
  padding: 6px 14px;
  border-radius: var(--radius-full);
  margin-bottom: 1rem;
  border: 1px solid var(--primary-100);
}

.section-dark .section-kicker {
  background-color: rgba(22, 122, 110, 0.25);
  color: var(--primary-200);
  border-color: rgba(78, 194, 181, 0.3);
}

.section-title {
  margin-bottom: 1rem;
}

.section-lead {
  font-size: var(--text-md);
  color: var(--color-text-muted);
  line-height: var(--leading-relaxed);
}

.section-dark .section-lead {
  color: var(--slate-300);
}

/* --- Header / Navigation --- */
.site-header {
  position: sticky;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  background-color: rgba(255, 255, 255, 0.94);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--slate-200);
  transition: all var(--transition-normal);
}

.site-header.is-scrolled {
  background-color: rgba(255, 255, 255, 0.98);
  box-shadow: var(--shadow-sm);
  border-bottom-color: var(--slate-300);
}

.header-container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 76px;
  gap: 1.5rem;
}

@media (max-width: 480px) {
  .header-container {
    height: 64px;
    gap: 0.75rem;
  }
}

/* --- Logo --- */
.brand-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: var(--font-extrabold);
  font-size: 1.35rem;
  color: var(--slate-900);
  text-decoration: none;
  letter-spacing: -0.03em;
  flex-shrink: 0;
}

@media (max-width: 480px) {
  .brand-logo {
    font-size: 1.2rem;
    gap: 8px;
  }
  .brand-icon {
    width: 32px;
    height: 32px;
    border-radius: 8px;
  }
}

.brand-icon {
  width: 36px;
  height: 36px;
  background: linear-gradient(135deg, var(--primary-700), var(--primary-500));
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--white);
  box-shadow: 0 4px 10px rgba(18, 99, 89, 0.25);
  flex-shrink: 0;
}

.brand-logo span.brand-accent {
  color: var(--primary-600);
}

/* --- Desktop Navigation --- */
.nav-desktop {
  display: none;
  align-items: center;
  gap: 0.5rem;
}

@media (min-width: 992px) {
  .nav-desktop {
    display: flex;
  }
}

.nav-desktop-list {
  display: flex;
  align-items: center;
  gap: 0.25rem;
}

.nav-link {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  padding: 8px 14px;
  font-size: var(--text-sm);
  font-weight: var(--font-semibold);
  color: var(--slate-700);
  border-radius: var(--radius-sm);
  transition: color var(--transition-fast), background-color var(--transition-fast);
}

.nav-link:hover,
.nav-link.is-active {
  color: var(--primary-700);
  background-color: var(--primary-50);
}

/* Dropdown Menu */
.nav-has-dropdown {
  position: relative;
}

.dropdown-arrow {
  width: 14px;
  height: 14px;
  transition: transform var(--transition-fast);
}

.nav-has-dropdown:hover .dropdown-arrow,
.nav-has-dropdown.open .dropdown-arrow {
  transform: rotate(180deg);
}

.nav-dropdown-menu {
  position: absolute;
  top: 100%;
  left: 0;
  width: 290px;
  background-color: var(--white);
  border: 1px solid var(--slate-200);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-lg);
  padding: 0.75rem;
  opacity: 0;
  visibility: hidden;
  transform: translateY(8px);
  transition: all var(--transition-fast);
  z-index: 1010;
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.nav-has-dropdown:hover .nav-dropdown-menu,
.nav-has-dropdown:focus-within .nav-dropdown-menu,
.nav-has-dropdown.open .nav-dropdown-menu {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.dropdown-item {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 10px 12px;
  border-radius: var(--radius-sm);
  text-decoration: none;
  transition: background-color var(--transition-fast);
}

.dropdown-item:hover {
  background-color: var(--primary-50);
}

.dropdown-icon-wrap {
  width: 32px;
  height: 32px;
  border-radius: var(--radius-xs);
  background-color: var(--primary-100);
  color: var(--primary-700);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.dropdown-content {
  display: flex;
  flex-direction: column;
}

.dropdown-title {
  font-size: var(--text-sm);
  font-weight: var(--font-semibold);
  color: var(--slate-900);
}

.dropdown-desc {
  font-size: var(--text-xs);
  color: var(--slate-500);
}

/* Header CTAs */
.header-actions {
  display: flex;
  align-items: center;
  gap: 1rem;
}

.btn-header-quote {
  display: none;
}

@media (min-width: 576px) {
  .btn-header-quote {
    display: inline-flex;
  }
}

/* Mobile Menu Toggle Button */
.menu-toggle-btn {
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  gap: 5px;
  width: 44px;
  height: 44px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--slate-200);
  background: var(--white);
  color: var(--slate-800);
  transition: background-color var(--transition-fast);
}

.menu-toggle-btn:hover {
  background-color: var(--slate-100);
}

.menu-toggle-btn span {
  display: block;
  width: 20px;
  height: 2px;
  background-color: var(--slate-800);
  border-radius: 2px;
  transition: transform var(--transition-fast), opacity var(--transition-fast);
}

.menu-toggle-btn[aria-expanded="true"] span:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}

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

.menu-toggle-btn[aria-expanded="true"] span:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

@media (min-width: 992px) {
  .menu-toggle-btn {
    display: none;
  }
}

/* --- Mobile Navigation Drawer --- */
.mobile-drawer-backdrop {
  position: fixed;
  inset: 0;
  background-color: rgba(10, 20, 18, 0.5);
  backdrop-filter: blur(4px);
  z-index: 1100;
  opacity: 0;
  visibility: hidden;
  transition: opacity var(--transition-normal), visibility var(--transition-normal);
}

.mobile-drawer-backdrop.is-open {
  opacity: 1;
  visibility: visible;
}

.mobile-nav-drawer {
  position: fixed;
  top: 0;
  right: 0;
  bottom: 0;
  width: 100%;
  max-width: min(360px, 88vw);
  background-color: var(--white);
  z-index: 1150;
  transform: translateX(100%);
  visibility: hidden;
  transition: transform var(--transition-normal), visibility var(--transition-normal);
  display: flex;
  flex-direction: column;
  box-shadow: var(--shadow-xl);
  overflow-y: auto;
  box-sizing: border-box;
}

.mobile-nav-drawer.is-open {
  transform: translateX(0);
  visibility: visible;
}

.mobile-drawer-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1.25rem 1.5rem;
  border-bottom: 1px solid var(--slate-200);
}

.mobile-drawer-close {
  width: 40px;
  height: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius-sm);
  color: var(--slate-600);
  border: 1px solid var(--slate-200);
}

.mobile-drawer-close:hover {
  background-color: var(--slate-100);
  color: var(--slate-900);
}

.mobile-nav-body {
  padding: 1.5rem;
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
  flex: 1;
}

.mobile-nav-list {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.mobile-nav-link {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0.85rem 1rem;
  font-size: var(--text-md);
  font-weight: var(--font-semibold);
  color: var(--slate-800);
  border-radius: var(--radius-sm);
  background-color: var(--slate-50);
}

.mobile-nav-link:hover,
.mobile-nav-link.is-active {
  background-color: var(--primary-50);
  color: var(--primary-700);
}

.mobile-services-sublist {
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
  padding-left: 1rem;
  margin-top: 0.5rem;
  border-left: 2px solid var(--primary-200);
}

.mobile-sub-link {
  font-size: var(--text-sm);
  color: var(--slate-600);
  padding: 6px 10px;
  border-radius: var(--radius-xs);
  display: block;
}

.mobile-sub-link:hover {
  color: var(--primary-700);
  background-color: var(--primary-50);
}

.mobile-drawer-footer {
  padding: 1.5rem;
  border-top: 1px solid var(--slate-200);
  background-color: var(--slate-50);
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.mobile-contact-info {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  font-size: var(--text-sm);
  color: var(--slate-600);
}

.mobile-contact-item {
  display: flex;
  align-items: center;
  gap: 8px;
}

/* --- Footer --- */
.site-footer {
  background-color: var(--slate-950);
  color: var(--slate-300);
  padding-top: clamp(4rem, 6vw, 5.5rem);
  padding-bottom: 2rem;
  margin-top: auto;
  border-top: 1px solid rgba(255, 255, 255, 0.08);
}

.footer-top {
  display: grid;
  grid-template-columns: 1fr;
  gap: 3rem;
  margin-bottom: 3.5rem;
}

@media (min-width: 640px) {
  .footer-top {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (min-width: 1024px) {
  .footer-top {
    grid-template-columns: 1.5fr 1fr 1fr 1.25fr;
    gap: 4rem;
  }
}

.footer-brand-col {
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
}

.footer-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: var(--font-extrabold);
  font-size: 1.4rem;
  color: var(--white);
  text-decoration: none;
}

.footer-brand-desc {
  font-size: var(--text-sm);
  line-height: var(--leading-relaxed);
  color: var(--slate-400);
  max-width: 320px;
}

.footer-col-title {
  color: var(--white);
  font-size: var(--text-base);
  font-weight: var(--font-bold);
  margin-bottom: 1.25rem;
  letter-spacing: -0.01em;
}

.footer-links {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.footer-links a {
  font-size: var(--text-sm);
  color: var(--slate-400);
  transition: color var(--transition-fast), transform var(--transition-fast);
  display: inline-flex;
  align-items: center;
  gap: 6px;
}

.footer-links a:hover {
  color: var(--white);
  transform: translateX(3px);
}

.footer-contact-item {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  font-size: var(--text-sm);
  color: var(--slate-400);
  margin-bottom: 0.85rem;
}

.footer-contact-item svg {
  flex-shrink: 0;
  margin-top: 3px;
  color: var(--primary-400);
}

.footer-demo-pill {
  display: inline-block;
  padding: 3px 8px;
  font-size: 0.7rem;
  font-weight: var(--font-semibold);
  background-color: rgba(245, 158, 11, 0.15);
  color: var(--amber-400);
  border-radius: var(--radius-xs);
  border: 1px solid rgba(245, 158, 11, 0.25);
  margin-bottom: 0.5rem;
}

.footer-bottom {
  padding-top: 2rem;
  border-top: 1px solid rgba(255, 255, 255, 0.08);
  display: flex;
  flex-direction: column;
  gap: 1rem;
  align-items: center;
  justify-content: space-between;
  font-size: var(--text-xs);
  color: var(--slate-400);
}

@media (min-width: 768px) {
  .footer-bottom {
    flex-direction: row;
  }
}

.footer-socials {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.social-icon-btn {
  width: 36px;
  height: 36px;
  border-radius: var(--radius-sm);
  background-color: rgba(255, 255, 255, 0.05);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--slate-300);
  transition: all var(--transition-fast);
}

.social-icon-btn:hover {
  background-color: var(--primary-700);
  color: var(--white);
  transform: translateY(-2px);
}

/* --- Back to Top Button --- */
.back-to-top {
  position: fixed;
  bottom: 24px;
  right: 24px;
  width: 44px;
  height: 44px;
  background-color: var(--primary-700);
  color: var(--white);
  border-radius: 50%;
  box-shadow: var(--shadow-md);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 900;
  opacity: 0;
  visibility: hidden;
  transform: translateY(12px);
  transition: all var(--transition-normal);
}

.back-to-top.is-visible {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.back-to-top:hover {
  background-color: var(--primary-600);
  transform: translateY(-3px);
  box-shadow: var(--shadow-lg);
}

@media (max-width: 480px) {
  .back-to-top {
    bottom: 16px;
    right: 16px;
    width: 40px;
    height: 40px;
  }
}