/* ==========================================================================
   AEV CONSTRUCTION LLC - Official Production Stylesheet
   Theme: Layered Architectural & Precision Engineering
   Colors: Steel Navy Blue (#0B192C, #1E293B) & Vibrant Construction Orange (#F97316, #EA580C)
   ========================================================================== */

:root {
  --color-bg-dark: #0b192c;
  --color-bg-navy: #112240;
  --color-bg-light: #08101e;
  --color-surface: #112240;
  --color-surface-hover: #1e3a5f;
  --color-primary: #ffffff;
  --color-primary-light: #f97316;
  --color-accent: #f97316;
  --color-accent-hover: #ea580c;
  --color-accent-soft: rgba(249, 115, 22, 0.18);
  --color-text-main: #f1f5f9;
  --color-text-muted: #cbd5e1;
  --color-text-light: #94a3b8;
  --color-border: rgba(255, 255, 255, 0.12);
  --color-border-dark: #1e3a5f;

  --font-family-base: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  --max-width: 1280px;
  --header-height: 80px;

  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 16px;
  --radius-full: 9999px;

  --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.4);
  --shadow-md: 0 4px 20px rgba(0, 0, 0, 0.6);
  --shadow-lg: 0 12px 36px rgba(0, 0, 0, 0.8);
  --shadow-orange: 0 8px 24px -4px rgba(249, 115, 22, 0.4);

  --transition-fast: 0.2s cubic-bezier(0.16, 1, 0.3, 1);
  --transition-normal: 0.35s cubic-bezier(0.16, 1, 0.3, 1);
}

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

html {
  scroll-behavior: smooth;
  font-size: 16px;
  -webkit-text-size-adjust: 100%;
}

body {
  font-family: var(--font-family-base);
  color: var(--color-text-main);
  background-color: var(--color-bg-dark);
  line-height: 1.6;
  overflow-x: hidden;
  scrollbar-width: thin;
  scrollbar-color: var(--color-accent) var(--color-bg-dark);
}

/* Custom Scrollbars */
::-webkit-scrollbar {
  width: 8px;
  height: 8px;
}

::-webkit-scrollbar-track {
  background: var(--color-bg-dark);
}

::-webkit-scrollbar-thumb {
  background: rgba(249, 115, 22, 0.6);
  border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
  background: var(--color-accent);
}

/* Accessibility: Skip Link */
.skip-link {
  position: absolute;
  top: -100px;
  left: 20px;
  background: var(--color-accent);
  color: #ffffff;
  padding: 12px 20px;
  z-index: 10000;
  font-weight: 700;
  border-radius: var(--radius-sm);
  transition: top var(--transition-fast);
}

.skip-link:focus {
  top: 20px;
}

/* Loader dismiss setup */
#page-loader {
  position: fixed;
  inset: 0;
  background-color: var(--color-bg-dark);
  z-index: 9999;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  transition: opacity 0.4s ease, visibility 0.4s ease;
}

#page-loader.hidden {
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
}

.loader-spinner {
  width: 54px;
  height: 54px;
  border: 4px solid rgba(255, 255, 255, 0.1);
  border-top-color: var(--color-accent);
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
  margin-bottom: 16px;
}

@keyframes spin {
  to { transform: rotate(360deg); }
}

.loader-text {
  color: #ffffff;
  font-size: 0.95rem;
  letter-spacing: 2px;
  text-transform: uppercase;
  font-weight: 700;
}

/* Layout Container */
.container {
  width: 100%;
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 24px;
}

/* Sticky Header */
.site-header {
  position: sticky;
  top: 0;
  left: 0;
  width: 100%;
  height: var(--header-height);
  background-color: rgba(15, 15, 15, 0.92);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
  z-index: 1000;
  display: flex;
  align-items: center;
  transition: background-color var(--transition-fast), box-shadow var(--transition-fast);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: 100%;
}

.brand-logo-link {
  display: flex;
  align-items: center;
  gap: 12px;
  text-decoration: none;
  color: #ffffff;
}

.brand-logo-img {
  height: 52px;
  width: auto;
  object-fit: contain;
  border-radius: var(--radius-sm);
}

.brand-title-wrap {
  display: flex;
  flex-direction: column;
}

.brand-name {
  font-size: 1.25rem;
  font-weight: 900;
  letter-spacing: 1px;
  color: #ffffff;
  line-height: 1.1;
}

.brand-tagline {
  font-size: 0.72rem;
  letter-spacing: 2.5px;
  color: var(--color-accent);
  text-transform: uppercase;
  font-weight: 700;
}

/* Desktop Navigation */
.nav-menu {
  display: flex;
  align-items: center;
  gap: 32px;
  list-style: none;
}

.nav-link {
  color: #cbd5e1;
  text-decoration: none;
  font-size: 0.95rem;
  font-weight: 600;
  transition: color var(--transition-fast);
  position: relative;
  padding: 8px 0;
}

.nav-link:hover, .nav-link.active {
  color: #ffffff;
}

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

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

.btn-header-cta {
  background-color: var(--color-accent);
  color: #ffffff;
  padding: 10px 22px;
  border-radius: var(--radius-sm);
  font-weight: 700;
  font-size: 0.9rem;
  text-decoration: none;
  transition: background-color var(--transition-fast), transform var(--transition-fast), box-shadow var(--transition-fast);
  box-shadow: var(--shadow-orange);
  white-space: nowrap;
}

.btn-header-cta:hover {
  background-color: var(--color-accent-hover);
  transform: translateY(-2px);
}

/* Mobile Nav Toggle */
.mobile-nav-toggle {
  display: none;
  background: transparent;
  border: none;
  color: #ffffff;
  font-size: 1.8rem;
  cursor: pointer;
  padding: 8px;
}

/* Hero Section */
.hero-section {
  position: relative;
  min-height: calc(100vh - var(--header-height));
  display: flex;
  align-items: center;
  background-color: var(--color-bg-dark);
  color: #ffffff;
  padding: 80px 0;
  overflow: hidden;
}

.hero-bg-wrap {
  position: absolute;
  inset: 0;
  z-index: 1;
}

.hero-bg-img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  filter: brightness(0.35) contrast(1.1);
}

.hero-overlay-grid {
  position: absolute;
  inset: 0;
  background-image: linear-gradient(to right, rgba(10, 10, 10, 0.92) 0%, rgba(10, 10, 10, 0.65) 100%);
  z-index: 2;
}

.hero-content {
  position: relative;
  z-index: 10;
  max-width: 800px;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 16px;
  background-color: rgba(249, 115, 22, 0.15);
  border: 1px solid rgba(249, 115, 22, 0.4);
  border-radius: var(--radius-full);
  color: var(--color-accent);
  font-size: 0.85rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 1.5px;
  margin-bottom: 24px;
}

.hero-title {
  font-size: clamp(2.5rem, 5vw, 4rem);
  font-weight: 900;
  line-height: 1.1;
  margin-bottom: 24px;
  letter-spacing: -0.5px;
  color: #ffffff;
}

.hero-title span {
  color: var(--color-accent);
}

.hero-description {
  font-size: 1.2rem;
  color: #cbd5e1;
  margin-bottom: 40px;
  max-width: 680px;
  line-height: 1.7;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
  margin-bottom: 48px;
}

.btn-primary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  background-color: var(--color-accent);
  color: #ffffff;
  padding: 16px 32px;
  border-radius: var(--radius-sm);
  font-weight: 800;
  font-size: 1rem;
  text-decoration: none;
  transition: all var(--transition-fast);
  box-shadow: var(--shadow-orange);
  border: none;
  cursor: pointer;
}

.btn-primary:hover {
  background-color: var(--color-accent-hover);
  transform: translateY(-2px);
}

.btn-secondary {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  background-color: rgba(255, 255, 255, 0.08);
  color: #ffffff;
  padding: 16px 32px;
  border-radius: var(--radius-sm);
  font-weight: 700;
  font-size: 1rem;
  text-decoration: none;
  border: 1px solid rgba(255, 255, 255, 0.2);
  transition: all var(--transition-fast);
}

.btn-secondary:hover {
  background-color: rgba(255, 255, 255, 0.18);
  border-color: #ffffff;
}

/* Feature Grid / Cards */
.section-padding {
  padding: 100px 0;
}

.section-header {
  text-align: center;
  max-width: 700px;
  margin: 0 auto 60px auto;
}

.section-tag {
  color: var(--color-accent);
  font-size: 0.85rem;
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: 2px;
  margin-bottom: 12px;
  display: block;
}

.section-title {
  font-size: clamp(2rem, 3.5vw, 2.75rem);
  font-weight: 900;
  color: var(--color-primary);
  line-height: 1.2;
  margin-bottom: 16px;
}

.section-subtitle {
  color: var(--color-text-muted);
  font-size: 1.1rem;
}

/* Cards & Layouts */
.services-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: 32px;
}

.service-card {
  background-color: var(--color-surface);
  border-radius: var(--radius-md);
  overflow: hidden;
  border: 1px solid var(--color-border);
  box-shadow: var(--shadow-sm);
  transition: all var(--transition-normal);
  display: flex;
  flex-direction: column;
}

.service-card:hover {
  transform: translateY(-8px);
  box-shadow: var(--shadow-lg);
  border-color: rgba(249, 115, 22, 0.3);
}

.service-img-wrap {
  width: 100%;
  height: 220px;
  overflow: hidden;
  position: relative;
}

.service-img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.6s ease;
}

.service-card:hover .service-img {
  transform: scale(1.08);
}

.service-body {
  padding: 28px;
  display: flex;
  flex-direction: column;
  flex-grow: 1;
}

.service-title {
  font-size: 1.35rem;
  font-weight: 800;
  color: var(--color-primary);
  margin-bottom: 12px;
}

.service-desc {
  color: var(--color-text-muted);
  font-size: 0.98rem;
  line-height: 1.6;
  margin-bottom: 20px;
}

/* About / Architectural Section Split */
.about-split {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: center;
}

.about-img-frame {
  position: relative;
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-lg);
}

.about-img {
  width: 100%;
  height: 480px;
  object-fit: cover;
  display: block;
}

.about-badge {
  position: absolute;
  bottom: 24px;
  right: 24px;
  background-color: var(--color-bg-dark);
  color: #ffffff;
  padding: 20px 28px;
  border-radius: var(--radius-md);
  border-left: 5px solid var(--color-accent);
  box-shadow: var(--shadow-lg);
}

.about-badge-title {
  font-size: 1.2rem;
  font-weight: 800;
  color: var(--color-accent);
}

.about-badge-sub {
  font-size: 0.85rem;
  color: #cbd5e1;
}

/* Why Choose Us Feature List */
.features-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 28px;
}

.feature-box {
  background-color: var(--color-surface);
  padding: 32px 24px;
  border-radius: var(--radius-md);
  border: 1px solid var(--color-border);
  box-shadow: var(--shadow-sm);
  transition: transform var(--transition-fast), border-color var(--transition-fast);
}

.feature-box:hover {
  transform: translateY(-4px);
  border-color: var(--color-accent);
}

.feature-icon-wrap {
  width: 56px;
  height: 56px;
  border-radius: var(--radius-sm);
  background-color: var(--color-accent-soft);
  color: var(--color-accent);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
  margin-bottom: 20px;
}

.feature-title {
  font-size: 1.2rem;
  font-weight: 800;
  color: var(--color-primary);
  margin-bottom: 10px;
}

.feature-desc {
  color: var(--color-text-muted);
  font-size: 0.95rem;
  line-height: 1.6;
}

/* Contact Section */
.contact-card {
  background-color: var(--color-bg-dark);
  color: #ffffff;
  border-radius: var(--radius-lg);
  padding: 60px 40px;
  text-align: center;
  position: relative;
  overflow: hidden;
  box-shadow: var(--shadow-lg);
}

.contact-card-title {
  font-size: 2.2rem;
  font-weight: 900;
  margin-bottom: 16px;
  color: #ffffff;
}

.contact-card-text {
  font-size: 1.1rem;
  color: #cbd5e1;
  max-width: 600px;
  margin: 0 auto 36px auto;
}

.contact-email-badge {
  display: inline-block;
  font-size: 1.25rem;
  font-weight: 800;
  color: var(--color-accent);
  background-color: rgba(255, 255, 255, 0.06);
  padding: 12px 28px;
  border-radius: var(--radius-full);
  border: 1px dashed var(--color-accent);
  margin-bottom: 32px;
  word-break: break-all;
}

/* Footer */
.site-footer {
  background-color: #050505;
  color: #9ca3af;
  padding: 60px 0 30px 0;
  border-top: 1px solid rgba(255, 255, 255, 0.08);
  font-size: 0.92rem;
}

.footer-top {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  align-items: center;
  gap: 24px;
  margin-bottom: 40px;
  padding-bottom: 30px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}

.footer-links {
  display: flex;
  gap: 24px;
  list-style: none;
  flex-wrap: wrap;
}

.footer-link {
  color: #cbd5e1;
  text-decoration: none;
  transition: color var(--transition-fast);
}

.footer-link:hover {
  color: var(--color-accent);
}

.footer-bottom {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 16px;
  font-size: 0.85rem;
}

/* Privacy Policy Layout */
.policy-page-header {
  background-color: var(--color-bg-dark);
  color: #ffffff;
  padding: 60px 0;
  border-bottom: 4px solid var(--color-accent);
}

.policy-title {
  font-size: 2.5rem;
  font-weight: 900;
  margin-bottom: 8px;
}

.policy-meta {
  color: var(--color-accent);
  font-weight: 700;
  font-size: 1rem;
}

.policy-layout {
  max-width: 960px;
  margin: 0 auto;
  padding: 60px 0;
}

.policy-toc {
  position: sticky;
  top: 100px;
  align-self: start;
  background-color: var(--color-surface);
  padding: 24px;
  border-radius: var(--radius-md);
  border: 1px solid var(--color-border);
  max-height: calc(100vh - 120px);
  overflow-y: auto;
  scrollbar-width: thin;
  scrollbar-color: var(--color-accent) rgba(15, 33, 60, 0.8);
}

.policy-toc::-webkit-scrollbar {
  width: 5px;
}

.policy-toc::-webkit-scrollbar-track {
  background: rgba(11, 25, 44, 0.8);
  border-radius: 10px;
}

.policy-toc::-webkit-scrollbar-thumb {
  background: var(--color-accent);
  border-radius: 10px;
}

.policy-toc::-webkit-scrollbar-thumb:hover {
  background: var(--color-accent-hover);
}

.policy-toc-title {
  font-size: 1rem;
  font-weight: 800;
  color: var(--color-primary);
  margin-bottom: 16px;
  text-transform: uppercase;
  letter-spacing: 1px;
}

.policy-toc-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.policy-toc-link {
  color: var(--color-text-muted);
  text-decoration: none;
  font-size: 0.88rem;
  display: block;
  padding: 4px 8px;
  border-radius: var(--radius-sm);
  transition: all var(--transition-fast);
  word-break: break-word;
}

.policy-toc-link:hover, .policy-toc-link.active {
  background-color: var(--color-accent-soft);
  color: var(--color-accent);
  font-weight: 700;
}

.policy-article {
  background-color: var(--color-surface);
  padding: 48px;
  border-radius: var(--radius-md);
  border: 1px solid var(--color-border);
  box-shadow: var(--shadow-sm);
}

.policy-section {
  margin-bottom: 36px;
  scroll-margin-top: 100px;
}

.policy-section-title {
  font-size: 1.5rem;
  font-weight: 800;
  color: var(--color-primary);
  margin-bottom: 16px;
  padding-bottom: 8px;
  border-bottom: 2px solid var(--color-border);
}

.policy-text {
  color: var(--color-text-main);
  line-height: 1.7;
  margin-bottom: 16px;
  word-wrap: break-word;
  overflow-wrap: break-word;
}

.policy-list {
  margin: 16px 0 20px 24px;
  color: var(--color-text-main);
}

.policy-list li {
  margin-bottom: 8px;
  word-wrap: break-word;
}

/* Scroll to top button */
.scroll-top-btn {
  position: fixed;
  bottom: 24px;
  right: 24px;
  width: 48px;
  height: 48px;
  border-radius: 50%;
  background-color: var(--color-accent);
  color: #ffffff;
  border: none;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.2rem;
  box-shadow: var(--shadow-orange);
  opacity: 0;
  visibility: hidden;
  transition: all var(--transition-fast);
  z-index: 900;
}

.scroll-top-btn.visible {
  opacity: 1;
  visibility: visible;
}

.scroll-top-btn:hover {
  background-color: var(--color-accent-hover);
  transform: translateY(-4px);
}

/* Responsive Media Queries */
@media (max-width: 992px) {
  .about-split {
    grid-template-columns: 1fr;
  }

  .policy-layout {
    grid-template-columns: 1fr;
  }

  .policy-toc {
    position: static;
    max-height: 300px;
  }
}

@media (max-width: 768px) {
  .mobile-nav-toggle {
    display: block;
  }

  .nav-menu {
    position: fixed;
    top: var(--header-height);
    left: 0;
    width: 100%;
    background-color: var(--color-bg-dark);
    flex-direction: column;
    padding: 32px 24px;
    gap: 20px;
    transform: translateY(-100%);
    opacity: 0;
    visibility: hidden;
    transition: all var(--transition-fast);
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
  }

  .nav-menu.open {
    transform: translateY(0);
    opacity: 1;
    visibility: visible;
  }

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

  .policy-article {
    padding: 24px;
  }

  .hero-actions {
    flex-direction: column;
  }

  .btn-primary, .btn-secondary {
    width: 100%;
  }
}