/* ==========================================================================
   San Diego HVAC Experts - Clean Utility / Minimal Design System
   Color Palette: Slate (#0F172A, #1E293B, #334155, #64748B, #F8FAFC), Accent Blue (#2563EB), Warm Amber (#F59E0B)
   Typography: Inter / Sans-serif System, Extra Bold Headings, Crisp Badges
   Components: Rounded 24px/16px Cards, Pill Buttons, Clean Subtle Borders, Glass Backdrop Sticky Nav
   ========================================================================== */

@import url('https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600;700;800;900&display=swap');

:root {
  /* Slate & Orange Palette */
  --primary-navy: #0F172A;       /* Slate 900 */
  --primary-navy-light: #1E293B; /* Slate 800 */
  --primary-blue: #F97316;       /* Vibrant Orange 500 */
  --primary-blue-hover: #EA580C; /* Darker Orange 600 */
  --primary-blue-light: #FFF7ED; /* Soft Orange 50 */
  --accent-amber: #F97316;       /* Orange Accent */
  --accent-amber-hover: #EA580C; /* Darker Orange Hover */
  --ice-blue: #F8FAFC;           /* Slate 50 canvas */
  --ice-blue-border: #E2E8F0;    /* Slate 200 border */
  
  /* Neutral Palette */
  --text-dark: #0F172A;          /* Slate 900 */
  --text-main: #334155;          /* Slate 700 */
  --text-muted: #64748B;         /* Slate 500 */
  --bg-light: #FFFFFF;          /* Pure Clean White */
  --bg-card: #FFFFFF;
  --border-light: #E2E8F0;       /* Slate 200 */
  
  /* Layout & Spacing */
  --container-max: 1280px;
  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 20px;
  --radius-xl: 24px;
  --radius-full: 9999px;
  --shadow-sm: 0 1px 2px 0 rgba(15, 23, 42, 0.05);
  --shadow-md: 0 4px 6px -1px rgba(15, 23, 42, 0.08), 0 2px 4px -2px rgba(15, 23, 42, 0.04);
  --shadow-lg: 0 12px 24px -4px rgba(15, 23, 42, 0.12), 0 4px 6px -2px rgba(15, 23, 42, 0.04);
  --transition: all 0.2s cubic-bezier(0.16, 1, 0.3, 1);
  
  /* Typography */
  --font-heading: 'Inter', system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  --font-body: 'Inter', system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
}

/* Base Reset & Globals */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.6;
  color: var(--text-main);
  background-color: var(--bg-light);
  scroll-behavior: smooth;
  -webkit-font-smoothing: antialiased;
}

body {
  overflow-x: hidden;
  display: flex;
  flex-direction: column;
  min-height: 100vh;
}

img, svg {
  max-width: 100%;
  height: auto;
  display: block;
}

a {
  color: var(--primary-blue);
  text-decoration: none;
  transition: var(--transition);
}

a:hover {
  color: var(--primary-blue-hover);
}

button, input, select, textarea {
  font: inherit;
}

:focus-visible {
  outline: 2px solid var(--primary-blue);
  outline-offset: 2px;
}

/* Minimal Typography Scale */
h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-heading);
  color: var(--primary-navy);
  font-weight: 800;
  line-height: 1.2;
  letter-spacing: -0.03em;
}

h1 { font-size: clamp(2.25rem, 4vw, 3.5rem); margin-bottom: 1rem; }
h2 { font-size: clamp(1.75rem, 3vw, 2.25rem); margin-bottom: 0.875rem; }
h3 { font-size: clamp(1.25rem, 2vw, 1.5rem); margin-bottom: 0.75rem; }
h4 { font-size: 1.125rem; font-weight: 700; margin-bottom: 0.5rem; }

p { margin-bottom: 1rem; color: var(--text-main); font-weight: 400; }
p.lead { font-size: 1.2rem; font-weight: 500; color: var(--text-muted); line-height: 1.6; }

/* Container */
.container {
  width: 100%;
  max-width: var(--container-max);
  margin-left: auto;
  margin-right: auto;
  padding-left: 1.5rem;
  padding-right: 1.5rem;
}

/* Utility Classes */
.text-center { text-align: center; }
.text-left { text-align: left; }
.text-amber { color: var(--accent-amber); }
.text-blue { color: var(--primary-blue); }
.text-muted { color: var(--text-muted); }
.bg-white { background-color: #FFFFFF; }
.bg-ice { background-color: var(--ice-blue); }
.bg-navy { background-color: var(--primary-navy); color: #FFFFFF; }
.bg-navy h1, .bg-navy h2, .bg-navy h3, .bg-navy p { color: #FFFFFF; }
.bg-navy p.lead { color: #94A3B8; }

.section-padding { padding-top: 5rem; padding-bottom: 5rem; }
.section-padding-sm { padding-top: 3rem; padding-bottom: 3rem; }

.section-header {
  max-width: 800px;
  margin: 0 auto 3.5rem auto;
  text-align: center;
}

/* Clean Eyebrow Badges */
.badge-tag {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.35rem 0.85rem;
  background-color: var(--primary-blue-light);
  color: var(--primary-blue);
  border: 1px solid #FFEDD5;
  border-radius: var(--radius-full);
  font-size: 0.75rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  margin-bottom: 1rem;
  white-space: nowrap;
}

.badge-tag.amber {
  background-color: #FFF7ED;
  color: #EA580C;
  border-color: #FFEDD5;
}

/* Minimal Utility Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.75rem 1.5rem;
  font-weight: 700;
  font-size: 0.95rem;
  border-radius: var(--radius-full);
  border: 1px solid transparent;
  cursor: pointer;
  transition: var(--transition);
  text-decoration: none;
  line-height: 1.25;
  white-space: nowrap;
}

.btn-primary {
  background-color: var(--primary-blue);
  color: #FFFFFF;
  box-shadow: 0 4px 12px rgba(249, 115, 22, 0.25);
}
.btn-primary:hover {
  background-color: var(--primary-blue-hover);
  color: #FFFFFF;
  transform: translateY(-1px);
  box-shadow: 0 6px 16px rgba(249, 115, 22, 0.35);
}

.btn-accent {
  background-color: var(--primary-blue);
  color: #FFFFFF;
  box-shadow: 0 4px 12px rgba(249, 115, 22, 0.25);
}
.btn-accent:hover {
  background-color: var(--primary-blue-hover);
  color: #FFFFFF;
  transform: translateY(-1px);
}

.btn-outline {
  background-color: #FFFFFF;
  border-color: var(--border-light);
  color: var(--primary-navy);
  box-shadow: var(--shadow-sm);
}
.btn-outline:hover {
  background-color: var(--bg-light);
  border-color: var(--primary-blue);
  color: var(--primary-blue);
}

.btn-outline-white {
  background-color: transparent;
  border-color: rgba(255, 255, 255, 0.3);
  color: #FFFFFF;
}
.btn-outline-white:hover {
  background-color: #FFFFFF;
  color: var(--primary-navy);
}

.btn-sm { padding: 0.5rem 1.125rem; font-size: 0.85rem; }
.btn-lg { padding: 1rem 2rem; font-size: 1.05rem; }

/* Sticky Glass Header & Topbar */
.header-topbar {
  background-color: var(--primary-navy);
  color: #94A3B8;
  font-size: 0.85rem;
  padding: 0.45rem 0;
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}

.topbar-wrapper {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 1rem;
}

.topbar-info {
  display: flex;
  align-items: center;
  gap: 1.5rem;
  flex-wrap: wrap;
}

.topbar-item {
  display: flex;
  align-items: center;
  gap: 0.4rem;
  color: #CBD5E1;
  font-weight: 500;
}

.topbar-item a {
  color: #FFFFFF;
  font-weight: 700;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 1000;
  background-color: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border-light);
  box-shadow: var(--shadow-sm);
  transition: var(--transition);
}

.header-container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 80px;
}

.logo-brand {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  text-decoration: none;
}

.logo-icon-box {
  width: 40px;
  height: 40px;
  background-color: var(--primary-blue);
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  color: #FFFFFF;
  box-shadow: 0 2px 8px rgba(37, 99, 235, 0.25);
}

.logo-text {
  display: flex;
  flex-direction: column;
}

.logo-title {
  font-size: 1.25rem;
  font-weight: 900;
  color: var(--primary-navy);
  line-height: 1;
  letter-spacing: -0.03em;
  text-transform: uppercase;
}

.logo-subtitle {
  font-size: 0.65rem;
  font-weight: 800;
  color: var(--primary-blue);
  letter-spacing: 0.18em;
  text-transform: uppercase;
  margin-top: 2px;
}

.nav-menu {
  display: flex;
  align-items: center;
  gap: 2rem;
  list-style: none;
}

.nav-link {
  font-weight: 600;
  font-size: 0.9rem;
  color: var(--text-main);
  padding: 0.5rem 0;
  position: relative;
}

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

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

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

/* Navigation Dropdowns */
.nav-item-dropdown {
  position: relative;
}

.nav-link-wrapper {
  display: flex;
  align-items: center;
  gap: 0.25rem;
}

.dropdown-toggle-btn {
  background: none;
  border: none;
  padding: 0.25rem 0.35rem;
  color: var(--text-main);
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  transition: color 0.2s ease;
  border-radius: var(--radius-sm);
  line-height: 1;
}

.dropdown-arrow {
  transition: transform 0.25s ease;
}

.dropdown-toggle-btn:hover,
.nav-item-dropdown:hover .dropdown-toggle-btn,
.nav-item-dropdown.is-open .dropdown-toggle-btn {
  color: var(--primary-blue);
}

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

/* Base Dropdown Menu */
.dropdown-menu {
  position: absolute;
  top: calc(100% + 8px);
  left: 50%;
  transform: translateX(-50%) translateY(8px);
  background-color: #FFFFFF;
  border-radius: var(--radius-lg);
  box-shadow: 0 20px 40px -8px rgba(15, 23, 42, 0.18), 0 8px 16px -4px rgba(15, 23, 42, 0.08);
  border: 1px solid var(--border-light);
  padding: 1.5rem;
  z-index: 1200;
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
  transition: opacity 0.2s cubic-bezier(0.16, 1, 0.3, 1),
              transform 0.2s cubic-bezier(0.16, 1, 0.3, 1),
              visibility 0.2s cubic-bezier(0.16, 1, 0.3, 1);
}

/* Hover bridge to keep dropdown open during mouse movement */
.dropdown-menu::before {
  content: '';
  position: absolute;
  top: -12px;
  left: 0;
  right: 0;
  height: 12px;
}

/* Desktop Hover & Open States */
@media (min-width: 769px) {
  .nav-item-dropdown:hover .dropdown-menu,
  .nav-item-dropdown:focus-within .dropdown-menu,
  .nav-item-dropdown.is-open .dropdown-menu {
    opacity: 1;
    visibility: visible;
    pointer-events: auto;
    transform: translateX(-50%) translateY(0);
  }
}

/* Mega Dropdown for Services */
.dropdown-mega {
  width: max-content;
  max-width: calc(100vw - 2rem);
  width: 1060px;
}

/* Grid Layouts inside Dropdown */
.dropdown-grid {
  display: grid;
  grid-template-columns: repeat(5, minmax(180px, 1fr));
  gap: 1.25rem;
}

.dropdown-grid-2col {
  display: grid;
  grid-template-columns: repeat(2, minmax(210px, 1fr));
  gap: 1.75rem;
}

.dropdown-col h4.dropdown-heading {
  font-size: 0.75rem;
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--primary-blue);
  margin-bottom: 0.65rem;
  padding-bottom: 0.35rem;
  border-bottom: 2px solid var(--primary-blue-light);
}

.dropdown-col ul {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 0.2rem;
  padding: 0;
  margin: 0;
}

.dropdown-col ul li a {
  font-size: 0.85rem;
  font-weight: 500;
  color: var(--text-main);
  padding: 0.3rem 0.5rem;
  border-radius: var(--radius-sm);
  display: block;
  transition: background-color 0.15s ease, color 0.15s ease, transform 0.15s ease;
  white-space: nowrap;
  line-height: 1.35;
}

.dropdown-col ul li a:hover,
.dropdown-col ul li a.active {
  background-color: var(--primary-blue-light);
  color: var(--primary-blue);
  font-weight: 700;
}

/* Responsive adjust for medium desktop screens (769px to 1180px) */
@media (min-width: 769px) and (max-width: 1180px) {
  .dropdown-mega {
    width: calc(100vw - 3rem);
    max-width: 900px;
    padding: 1.25rem;
  }
  .dropdown-grid {
    grid-template-columns: repeat(3, 1fr);
    gap: 1.25rem;
  }
}

.nav-actions {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

/* Mobile Nav Toggle */
.mobile-nav-toggle {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  padding: 0.5rem;
  color: var(--primary-navy);
}

/* Hero Section */
.hero-section {
  position: relative;
  background: var(--primary-navy);
  color: #FFFFFF;
  padding-top: 5rem;
  padding-bottom: 5.5rem;
  overflow: hidden;
}

.hero-overlay {
  position: absolute;
  inset: 0;
  background-image: radial-gradient(circle at 85% 15%, rgba(249, 115, 22, 0.22) 0%, transparent 60%);
  pointer-events: none;
}

.hero-grid {
  display: grid;
  grid-template-columns: 1.2fr 0.8fr;
  gap: 3.5rem;
  align-items: center;
}

.hero-content h1 {
  color: #FFFFFF;
  margin-bottom: 1.25rem;
}

.hero-content p.lead {
  color: #94A3B8;
  margin-bottom: 2rem;
}

.hero-emergency-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  background: rgba(249, 115, 22, 0.15);
  border: 1px solid rgba(249, 115, 22, 0.35);
  color: #FB923C;
  padding: 0.4rem 1rem;
  border-radius: var(--radius-full);
  font-weight: 700;
  font-size: 0.825rem;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  margin-bottom: 1.5rem;
}

.hero-cta-group {
  display: flex;
  align-items: center;
  gap: 1rem;
  flex-wrap: wrap;
  margin-bottom: 2.5rem;
}

.trust-badges-grid {
  display: flex;
  align-items: center;
  gap: 2rem;
  padding-top: 2rem;
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  flex-wrap: wrap;
}

.trust-badge-item {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  color: #CBD5E1;
  font-size: 0.875rem;
  font-weight: 600;
}

.trust-badge-icon {
  color: var(--primary-blue);
  font-weight: 900;
}

/* Quick Estimate Hero Form Card */
.hero-form-card {
  background-color: #FFFFFF;
  color: var(--text-main);
  border-radius: var(--radius-xl);
  padding: 2.25rem;
  box-shadow: var(--shadow-lg);
  border: 1px solid var(--border-light);
}

.hero-form-card h3 {
  color: var(--primary-navy);
  margin-bottom: 0.25rem;
}

.hero-form-card p {
  color: var(--text-muted);
  font-size: 0.875rem;
  margin-bottom: 1.5rem;
}

.form-group {
  margin-bottom: 1.25rem;
}

.form-label {
  display: block;
  font-size: 0.825rem;
  font-weight: 700;
  color: var(--primary-navy);
  margin-bottom: 0.35rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.form-input, .form-select, .form-textarea {
  width: 100%;
  padding: 0.75rem 1rem;
  border: 1px solid var(--border-light);
  border-radius: var(--radius-md);
  background-color: #FFFFFF;
  color: var(--text-dark);
  transition: var(--transition);
  font-size: 0.95rem;
}

.form-input:focus, .form-select:focus, .form-textarea:focus {
  border-color: var(--primary-blue);
  box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.12);
  outline: none;
}

/* Clean Feature Cards */
.features-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 1.75rem;
}

.feature-card {
  background-color: var(--bg-card);
  padding: 2.25rem;
  border-radius: var(--radius-xl);
  border: 1px solid var(--border-light);
  box-shadow: var(--shadow-sm);
  transition: var(--transition);
}

.feature-card:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
  border-color: #CBD5E1;
}

.feature-icon-wrapper {
  width: 48px;
  height: 48px;
  background-color: var(--primary-blue-light);
  color: var(--primary-blue);
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 1.25rem;
}

/* Service Cards */
.services-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
  gap: 1.75rem;
}

.service-card {
  background-color: #FFFFFF;
  border-radius: var(--radius-xl);
  border: 1px solid var(--border-light);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  transition: var(--transition);
  display: flex;
  flex-direction: column;
}

.service-card:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
  border-color: var(--primary-blue);
}

.service-card-body {
  padding: 2rem;
  display: flex;
  flex-direction: column;
  flex-grow: 1;
}

.service-card-icon {
  width: 48px;
  height: 48px;
  background: var(--primary-blue-light);
  color: var(--primary-blue);
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 1.25rem;
  font-size: 1.5rem;
}

.service-card h3 {
  font-size: 1.2rem;
  margin-bottom: 0.75rem;
}

.service-card p {
  color: var(--text-muted);
  font-size: 0.925rem;
  margin-bottom: 1.5rem;
  flex-grow: 1;
  line-height: 1.55;
}

.service-card-footer {
  margin-top: auto;
  padding-top: 1rem;
  border-top: 1px solid var(--border-light);
}

.link-arrow {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  font-weight: 700;
  font-size: 0.875rem;
  color: var(--primary-blue);
}

.link-arrow:hover {
  gap: 0.6rem;
}

/* Service Area Grid */
.service-areas-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
  gap: 1.25rem;
}

.city-card {
  background-color: #FFFFFF;
  padding: 1.25rem 1.5rem;
  border-radius: var(--radius-lg);
  border: 1px solid var(--border-light);
  box-shadow: var(--shadow-sm);
  display: flex;
  align-items: center;
  justify-content: space-between;
  text-decoration: none;
  color: var(--primary-navy);
  font-weight: 700;
  transition: var(--transition);
}

.city-card:hover {
  border-color: var(--primary-blue);
  color: var(--primary-blue);
  box-shadow: var(--shadow-md);
}

.city-card .city-icon {
  color: var(--primary-blue);
}

/* Process Timeline Step Cards */
.process-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 1.75rem;
}

.process-card {
  background-color: #FFFFFF;
  padding: 2rem;
  border-radius: var(--radius-xl);
  border: 1px solid var(--border-light);
  box-shadow: var(--shadow-sm);
}

.process-step-num {
  width: 40px;
  height: 40px;
  background-color: var(--primary-blue);
  color: #FFFFFF;
  border-radius: var(--radius-full);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 900;
  font-size: 1.1rem;
  margin-bottom: 1.25rem;
}

/* Brands Grid */
.brands-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(150px, 1fr));
  gap: 1.25rem;
  align-items: center;
}

.brand-badge {
  background-color: #FFFFFF;
  padding: 1.25rem 1rem;
  border-radius: var(--radius-lg);
  border: 1px solid var(--border-light);
  text-align: center;
  font-weight: 700;
  color: var(--primary-navy);
  box-shadow: var(--shadow-sm);
  transition: var(--transition);
  font-size: 0.95rem;
}

.brand-badge:hover {
  border-color: var(--primary-blue);
  color: var(--primary-blue);
}

/* Financing Section */
.financing-card {
  background: var(--primary-navy);
  color: #FFFFFF;
  border-radius: var(--radius-xl);
  padding: 3.5rem;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 3rem;
  align-items: center;
}

.financing-card h2, .financing-card p {
  color: #FFFFFF;
}

/* Map Section */
.map-container {
  width: 100%;
  height: 420px;
  border-radius: var(--radius-xl);
  overflow: hidden;
  box-shadow: var(--shadow-md);
  border: 1px solid var(--border-light);
}

.map-container iframe {
  width: 100%;
  height: 100%;
  border: 0;
}

/* FAQ Accordion */
.faq-list {
  max-width: 900px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 0.875rem;
}

.faq-item {
  background-color: #FFFFFF;
  border: 1px solid var(--border-light);
  border-radius: var(--radius-lg);
  overflow: hidden;
  transition: var(--transition);
}

.faq-button {
  width: 100%;
  padding: 1.25rem 1.5rem;
  text-align: left;
  background: none;
  border: none;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--primary-navy);
  cursor: pointer;
}

.faq-button:hover {
  background-color: var(--bg-light);
}

.faq-icon {
  width: 22px;
  height: 22px;
  transition: transform 0.25s ease;
  color: var(--primary-blue);
  flex-shrink: 0;
}

.faq-item.active .faq-icon {
  transform: rotate(180deg);
}

.faq-content {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.3s ease, padding 0.3s ease;
  padding: 0 1.5rem;
  color: var(--text-main);
}

.faq-item.active .faq-content {
  max-height: 500px;
  padding: 0 1.5rem 1.5rem 1.5rem;
}

/* Articles Grid */
.articles-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: 1.75rem;
}

.article-card {
  background-color: #FFFFFF;
  border-radius: var(--radius-xl);
  border: 1px solid var(--border-light);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  display: flex;
  flex-direction: column;
  transition: var(--transition);
}

.article-card:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
  border-color: var(--primary-blue);
}

.article-content {
  padding: 1.75rem;
  display: flex;
  flex-direction: column;
  flex-grow: 1;
}

.article-meta {
  font-size: 0.8rem;
  color: var(--text-muted);
  margin-bottom: 0.5rem;
  display: flex;
  align-items: center;
  gap: 1rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

/* CTA Banner */
.cta-banner {
  background: var(--primary-blue);
  color: #FFFFFF;
  padding: 4rem 2rem;
  border-radius: var(--radius-xl);
  text-align: center;
  box-shadow: var(--shadow-lg);
}

.cta-banner h2, .cta-banner p {
  color: #FFFFFF;
}

/* Breadcrumbs */
.breadcrumb-nav {
  padding: 1rem 0;
  background-color: #FFFFFF;
  border-bottom: 1px solid var(--border-light);
  font-size: 0.85rem;
}

.breadcrumb-list {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  list-style: none;
  flex-wrap: wrap;
}

.breadcrumb-item {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  color: var(--text-muted);
}

.breadcrumb-item a {
  color: var(--text-muted);
}

.breadcrumb-item a:hover {
  color: var(--primary-blue);
}

.breadcrumb-item.active {
  color: var(--primary-navy);
  font-weight: 700;
}

/* Article & Content Page Layout */
.content-wrapper {
  display: grid;
  grid-template-columns: 2.5fr 1fr;
  gap: 3.5rem;
  padding-top: 3rem;
  padding-bottom: 5rem;
}

.main-content {
  background-color: #FFFFFF;
  padding: 3rem;
  border-radius: var(--radius-xl);
  border: 1px solid var(--border-light);
  box-shadow: var(--shadow-sm);
}

.main-content h2 { margin-top: 2rem; margin-bottom: 1rem; }
.main-content h3 { margin-top: 1.5rem; margin-bottom: 0.75rem; }
.main-content ul, .main-content ol { margin-bottom: 1.5rem; padding-left: 1.5rem; }
.main-content li { margin-bottom: 0.5rem; }

.sidebar {
  display: flex;
  flex-direction: column;
  gap: 1.75rem;
}

.sidebar-widget {
  background-color: #FFFFFF;
  padding: 1.75rem;
  border-radius: var(--radius-xl);
  border: 1px solid var(--border-light);
  box-shadow: var(--shadow-sm);
}

.sidebar-widget h3 {
  font-size: 1.1rem;
  margin-bottom: 1rem;
  padding-bottom: 0.75rem;
  border-bottom: 1px solid var(--border-light);
}

.sidebar-links {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 0.6rem;
}

.sidebar-links a {
  color: var(--text-main);
  font-weight: 600;
  font-size: 0.925rem;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.sidebar-links a:hover {
  color: var(--primary-blue);
}

/* Footer */
.site-footer {
  background-color: var(--primary-navy);
  color: #94A3B8;
  padding-top: 4.5rem;
  padding-bottom: 2rem;
  margin-top: auto;
  border-top: 1px solid rgba(255, 255, 255, 0.08);
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.5fr repeat(3, 1fr);
  gap: 3rem;
  margin-bottom: 3.5rem;
}

.footer-col h4 {
  color: #FFFFFF;
  font-size: 1.05rem;
  margin-bottom: 1.25rem;
}

.footer-links {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.footer-links a {
  color: #CBD5E1;
  font-size: 0.925rem;
}

.footer-links a:hover {
  color: #FFFFFF;
}

.footer-bottom {
  padding-top: 2rem;
  border-top: 1px solid rgba(255, 255, 255, 0.08);
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 1rem;
  font-size: 0.85rem;
}

.footer-bottom-links {
  display: flex;
  gap: 1.5rem;
}

.footer-bottom-links a {
  color: #CBD5E1;
}

.footer-bottom-links a:hover {
  color: #FFFFFF;
}

/* Modal Popup */
.modal-overlay {
  position: fixed;
  inset: 0;
  background-color: rgba(15, 23, 42, 0.75);
  backdrop-filter: blur(6px);
  z-index: 2000;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 1.5rem;
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.25s ease, visibility 0.25s ease;
}

.modal-overlay.active {
  opacity: 1;
  visibility: visible;
}

.modal-card {
  background-color: #FFFFFF;
  width: 100%;
  max-width: 520px;
  border-radius: var(--radius-xl);
  padding: 2.5rem;
  position: relative;
  box-shadow: var(--shadow-lg);
  transform: translateY(16px);
  transition: transform 0.25s ease;
}

.modal-overlay.active .modal-card {
  transform: translateY(0);
}

.modal-close-btn {
  position: absolute;
  top: 1.25rem;
  right: 1.25rem;
  background: none;
  border: none;
  font-size: 1.5rem;
  color: var(--text-muted);
  cursor: pointer;
  padding: 0.5rem;
  line-height: 1;
}

.modal-close-btn:hover {
  color: var(--primary-navy);
}

/* Alert Boxes */
.alert-box {
  padding: 1rem 1.25rem;
  border-radius: var(--radius-md);
  margin-top: 1rem;
  font-weight: 600;
  font-size: 0.9rem;
  display: none;
}

.alert-success {
  background-color: #DCFCE7;
  color: #166534;
  border: 1px solid #BBF7D0;
}

.alert-error {
  background-color: #FEE2E2;
  color: #991B1B;
  border: 1px solid #FECACA;
}

/* Responsive Media Queries */
@media (max-width: 1024px) {
  .hero-grid { grid-template-columns: 1fr; gap: 2.5rem; }
  .content-wrapper { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .financing-card { grid-template-columns: 1fr; text-align: center; padding: 2.5rem; }
}

@media (max-width: 768px) {
  .site-header {
    z-index: 1000;
  }
  .topbar-wrapper { justify-content: center; text-align: center; }
  .mobile-nav-toggle { display: block; }
  .nav-menu {
    position: fixed;
    top: 80px;
    left: 0;
    right: 0;
    background-color: #FFFFFF;
    flex-direction: column;
    padding: 1.5rem;
    box-shadow: var(--shadow-lg);
    border-bottom: 1px solid var(--border-light);
    transform: translateY(-150%);
    transition: transform 0.3s ease;
    max-height: calc(100vh - 80px);
    overflow-y: auto;
    z-index: 1000;
    align-items: stretch;
  }

  .nav-menu.active {
    transform: translateY(0);
  }

  .nav-item-dropdown {
    width: 100%;
  }

  .nav-link-wrapper {
    display: flex;
    align-items: center;
    justify-content: space-between;
    width: 100%;
  }

  .dropdown-menu {
    position: static;
    transform: none !important;
    box-shadow: none;
    border: none;
    border-left: 2px solid var(--primary-blue-light);
    margin-left: 0.5rem;
    margin-top: 0.5rem;
    padding: 0.25rem 0 0.5rem 0.75rem;
    width: 100%;
    max-width: 100%;
    opacity: 1;
    visibility: visible;
    pointer-events: auto;
    display: none;
    background: transparent;
  }

  .nav-item-dropdown.is-open .dropdown-menu {
    display: block;
    animation: mobileSlideDown 0.2s ease forwards;
  }

  @keyframes mobileSlideDown {
    from { opacity: 0; transform: translateY(-6px); }
    to { opacity: 1; transform: translateY(0); }
  }

  .dropdown-grid, .dropdown-grid-2col {
    grid-template-columns: 1fr;
    gap: 0.75rem;
  }

  .dropdown-col h4.dropdown-heading {
    margin-top: 0.5rem;
    margin-bottom: 0.35rem;
  }

  .dropdown-col ul li a {
    font-size: 0.875rem;
    padding: 0.35rem 0.5rem;
    white-space: normal;
  }

  .nav-actions { display: none; }
  .footer-grid { grid-template-columns: 1fr; }
  .footer-bottom { flex-direction: column; text-align: center; }
}