/**
 * ============================================================================
 * INFRA VISION MODERNE (IVM-SARL) - Master Stylesheet
 * ============================================================================
 * Clean white background, navy-blue headings, green accents, subtle orange highlights.
 * Fully responsive, accessible, lightweight, framework-free CSS3.
 * ============================================================================
 */

@import url('https://fonts.googleapis.com/css2?family=Outfit:wght@400;500;600;700;800;900&family=Plus+Jakarta+Sans:wght@300;400;500;600;700;800&display=swap');

/* ==========================================================================
   1. CSS VARIABLES (DESIGN TOKENS)
   ========================================================================== */
:root {
  /* Brand Primary - Corporate Engineering Navy */
  --color-primary-900: #07172C;
  --color-primary-800: #0B2545;
  --color-primary-700: #0E3A66;
  --color-primary-600: #134E8B;
  --color-primary-500: #1D6FB8;
  --color-primary-100: #E6F0FA;
  --color-primary-50:  #F0F6FC;

  /* Brand Secondary - Pure Water / Sustainability Green */
  --color-accent-700: #047857;
  --color-accent-600: #059669;
  --color-accent-500: #10B981;
  --color-accent-400: #34D399;
  --color-accent-100: #D1FAE5;
  --color-accent-50:  #ECFDF5;

  /* Brand Tertiary - Construction Safety Amber / Orange */
  --color-highlight-700: #B45309;
  --color-highlight-600: #D97706;
  --color-highlight-500: #F59E0B;
  --color-highlight-400: #FBBF24;
  --color-highlight-100: #FEF3C7;
  --color-highlight-50:  #FFFBEB;

  /* Neutrals & Clean White Surfaces */
  --color-white: #FFFFFF;
  --color-slate-50:  #F8FAFC;
  --color-slate-100: #F1F5F9;
  --color-slate-200: #E2E8F0;
  --color-slate-300: #CBD5E1;
  --color-slate-400: #94A3B8;
  --color-slate-500: #64748B;
  --color-slate-600: #475569;
  --color-slate-700: #334155;
  --color-slate-800: #1E293B;
  --color-slate-900: #0F172A;

  /* Semantic Aliases */
  --bg-body: #FFFFFF;
  --bg-surface: #FFFFFF;
  --bg-subtle: #F8FAFC;
  --bg-elevated: #F1F5F9;
  --text-primary: #0F172A;
  --text-heading: #0B2545;
  --text-secondary: #475569;
  --text-muted: #64748B;
  --border-color: #E2E8F0;
  --border-focus: #10B981;

  /* Typography */
  --font-heading: 'Outfit', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  --font-body: 'Plus Jakarta Sans', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;

  /* Elevation Shadows */
  --shadow-xs: 0 1px 2px 0 rgba(15, 23, 42, 0.05);
  --shadow-sm: 0 1px 3px 0 rgba(15, 23, 42, 0.08), 0 1px 2px -1px rgba(15, 23, 42, 0.08);
  --shadow-md: 0 4px 6px -1px rgba(15, 23, 42, 0.08), 0 2px 4px -2px rgba(15, 23, 42, 0.06);
  --shadow-lg: 0 10px 15px -3px rgba(15, 23, 42, 0.08), 0 4px 6px -4px rgba(15, 23, 42, 0.04);
  --shadow-xl: 0 20px 25px -5px rgba(15, 23, 42, 0.1), 0 8px 10px -6px rgba(15, 23, 42, 0.05);
  --shadow-inner: inset 0 2px 4px 0 rgba(15, 23, 42, 0.05);

  /* Layout & Spacing */
  --container-max: 1280px;
  --header-height: 84px;
  --topbar-height: 42px;
  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 16px;
  --radius-xl: 24px;
  --radius-full: 9999px;

  /* Transitions */
  --transition-fast: 0.15s ease-in-out;
  --transition-normal: 0.25s ease-in-out;
  --transition-slow: 0.4s cubic-bezier(0.16, 1, 0.3, 1);
}

/* ==========================================================================
   2. GLOBAL RESET & BASE STYLES
   ========================================================================== */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

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

body {
  font-family: var(--font-body);
  font-size: 1rem;
  line-height: 1.65;
  color: var(--text-secondary);
  background-color: var(--bg-body);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
}

/* Accessibility Focus States */
:focus-visible {
  outline: 3px solid var(--color-accent-500);
  outline-offset: 2px;
}

/* Headings */
h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-heading);
  color: var(--text-heading);
  line-height: 1.25;
  font-weight: 700;
  letter-spacing: -0.02em;
}

h1 { font-size: clamp(2.2rem, 4vw + 1rem, 3.5rem); }
h2 { font-size: clamp(1.75rem, 3vw + 0.5rem, 2.5rem); }
h3 { font-size: clamp(1.35rem, 2vw + 0.3rem, 1.85rem); }
h4 { font-size: 1.25rem; }
h5 { font-size: 1.1rem; }
h6 { font-size: 0.95rem; }

p {
  margin-bottom: 1.25rem;
}

p:last-child {
  margin-bottom: 0;
}

a {
  color: var(--color-primary-700);
  text-decoration: none;
  transition: color var(--transition-fast);
}

a:hover {
  color: var(--color-accent-600);
}

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

ul, ol {
  list-style: none;
}

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

/* Screen reader only utility */
.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

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

.container-narrow {
  max-width: 960px;
}

/* ==========================================================================
   3. TOP CONTACT BAR
   ========================================================================== */
.topbar {
  background-color: var(--color-primary-900);
  color: var(--color-slate-300);
  font-size: 0.85rem;
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
  position: relative;
  z-index: 1001;
}

.topbar-content {
  display: flex;
  align-items: center;
  justify-content: space-between;
  min-height: var(--topbar-height);
  padding: 0.35rem 0;
  flex-wrap: wrap;
  gap: 0.75rem;
}

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

.topbar-item {
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
  color: var(--color-slate-300);
  transition: color var(--transition-fast);
}

.topbar-item:hover {
  color: var(--color-white);
}

.topbar-item i {
  color: var(--color-accent-400);
  font-size: 0.9rem;
}

.topbar-item a,
.topbar-link,
.topbar a[href^="mailto:"],
.topbar a[href^="tel:"] {
  color: #FFFFFF;
  text-decoration: none;
  transition: color var(--transition-fast);
}

.topbar-item a:hover,
.topbar-link:hover,
.topbar a[href^="mailto:"]:hover,
.topbar a[href^="tel:"]:hover {
  color: var(--color-accent-400);
}

.topbar-badge {
  background-color: rgba(16, 185, 129, 0.15);
  color: var(--color-accent-400);
  font-size: 0.75rem;
  font-weight: 600;
  padding: 0.2rem 0.6rem;
  border-radius: var(--radius-full);
  border: 1px solid rgba(16, 185, 129, 0.3);
}

/* ==========================================================================
   4. MAIN HEADER & NAVIGATION
   ========================================================================== */
.site-header {
  background-color: var(--color-white);
  position: sticky;
  top: 0;
  z-index: 1000;
  border-bottom: 1px solid var(--border-color);
  box-shadow: var(--shadow-xs);
  transition: all var(--transition-normal);
}

.site-header.scrolled {
  box-shadow: var(--shadow-md);
  background-color: rgba(255, 255, 255, 0.98);
  backdrop-filter: blur(10px);
}

.site-header .container.header-container {
  max-width: 1440px;
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: var(--header-height);
  gap: 1rem;
}

.brand-logo {
  display: flex;
  align-items: center;
  flex-shrink: 0;
}

.brand-logo img {
  height: 48px;
  width: auto;
  max-width: 250px;
  object-fit: contain;
  display: block;
}

.main-nav {
  display: flex;
  align-items: center;
  justify-content: center;
  flex: 1 1 auto;
  min-width: 0;
}

.nav-list {
  display: flex;
  align-items: center;
  justify-content: center;
  list-style: none;
  margin: 0;
  padding: 0;
  gap: clamp(0.15rem, 0.38vw, 0.45rem);
  flex-wrap: nowrap;
}

.nav-link {
  font-family: var(--font-heading);
  font-size: clamp(0.82rem, 0.85vw + 0.05rem, 0.91rem);
  font-weight: 600;
  color: var(--color-slate-700);
  padding: 0.45rem clamp(0.4rem, 0.52vw, 0.68rem);
  border-radius: var(--radius-sm);
  transition: all var(--transition-fast);
  position: relative;
  white-space: nowrap;
  display: inline-block;
  line-height: 1.25;
}

.nav-link:hover {
  color: var(--color-primary-800);
  background-color: var(--color-slate-100);
}

.nav-link.active {
  color: var(--color-primary-800);
  font-weight: 700;
}

.nav-link.active::after {
  content: '';
  position: absolute;
  bottom: -6px;
  left: clamp(0.4rem, 0.52vw, 0.68rem);
  right: clamp(0.4rem, 0.52vw, 0.68rem);
  height: 3px;
  background-color: var(--color-accent-600);
  border-radius: 2px;
}

.header-actions {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  flex-shrink: 0;
}

.header-cta {
  white-space: nowrap;
  font-size: 0.88rem;
  padding: 0.55rem 1.15rem;
  flex-shrink: 0;
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
}

/* Mobile Hamburger Toggle */
.mobile-nav-toggle {
  display: none;
  align-items: center;
  justify-content: center;
  background: transparent;
  border: 1px solid var(--border-color);
  color: var(--color-slate-800);
  font-size: 1.25rem;
  width: 42px;
  height: 42px;
  padding: 0;
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: all var(--transition-fast);
}

.mobile-nav-toggle:hover {
  background-color: var(--color-slate-100);
  color: var(--color-primary-800);
  border-color: var(--color-primary-700);
}

/* Header Responsive Switching for Tablets and Mobile Devices */
@media (max-width: 1120px) {
  .site-header .main-nav {
    display: none;
  }

  .site-header .mobile-nav-toggle {
    display: inline-flex;
  }
}

@media (max-width: 600px) {
  .site-header .header-cta {
    display: none;
  }

  .brand-logo img {
    height: 40px;
    max-width: 210px;
  }
}

/* Mobile Drawer Overlay */
.mobile-menu-overlay {
  display: none;
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background-color: rgba(7, 23, 44, 0.6);
  backdrop-filter: blur(4px);
  z-index: 1998;
}

.mobile-menu-drawer {
  position: fixed;
  top: 0;
  right: -320px;
  width: 300px;
  height: 100%;
  background-color: var(--color-white);
  z-index: 1999;
  box-shadow: var(--shadow-xl);
  display: flex;
  flex-direction: column;
  transition: right var(--transition-slow);
  padding: 1.5rem;
  overflow-y: auto;
}

.mobile-menu-drawer.open {
  right: 0;
}

.mobile-menu-overlay.active {
  display: block;
}

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

.mobile-nav-close {
  background: none;
  border: none;
  font-size: 1.5rem;
  color: var(--color-slate-600);
  cursor: pointer;
}

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

.mobile-nav-link {
  display: block;
  font-family: var(--font-heading);
  font-weight: 600;
  font-size: 1.1rem;
  color: var(--color-slate-800);
  padding: 0.75rem 1rem;
  border-radius: var(--radius-md);
  transition: all var(--transition-fast);
}

.mobile-nav-link:hover,
.mobile-nav-link.active {
  background-color: var(--color-primary-50);
  color: var(--color-primary-800);
}

.mobile-drawer-footer {
  margin-top: auto;
  padding-top: 1.5rem;
  border-top: 1px solid var(--border-color);
  font-size: 0.85rem;
  color: var(--text-muted);
}

/* ==========================================================================
   5. BUTTONS & PILLS
   ========================================================================== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.6rem;
  font-family: var(--font-heading);
  font-weight: 600;
  font-size: 0.95rem;
  line-height: 1.2;
  padding: 0.75rem 1.45rem;
  border-radius: var(--radius-sm);
  border: 1px solid transparent;
  cursor: pointer;
  transition: all var(--transition-normal);
  text-align: center;
  white-space: nowrap;
}

.btn:active {
  transform: translateY(1px);
}

.btn-primary {
  background-color: var(--color-primary-800);
  color: var(--color-white);
  border-color: var(--color-primary-800);
  box-shadow: 0 2px 4px rgba(11, 37, 69, 0.15);
}

.btn-primary:hover {
  background-color: var(--color-primary-700);
  color: var(--color-white);
  border-color: var(--color-primary-700);
  box-shadow: 0 4px 10px rgba(11, 37, 69, 0.25);
  transform: translateY(-2px);
}

.btn-accent {
  background-color: var(--color-accent-600);
  color: var(--color-white);
  border-color: var(--color-accent-600);
  box-shadow: 0 2px 4px rgba(5, 150, 105, 0.2);
}

.btn-accent:hover {
  background-color: var(--color-accent-700);
  color: var(--color-white);
  border-color: var(--color-accent-700);
  box-shadow: 0 4px 12px rgba(5, 150, 105, 0.3);
  transform: translateY(-2px);
}

.btn-highlight {
  background-color: var(--color-highlight-600);
  color: var(--color-white);
  border-color: var(--color-highlight-600);
}

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

.btn-outline-primary {
  background-color: transparent;
  color: var(--color-primary-800);
  border-color: var(--color-primary-800);
}

.btn-outline-primary:hover {
  background-color: var(--color-primary-800);
  color: var(--color-white);
}

.btn-outline-white {
  background-color: rgba(255, 255, 255, 0.1);
  color: var(--color-white);
  border-color: rgba(255, 255, 255, 0.4);
  backdrop-filter: blur(4px);
}

.btn-outline-white:hover {
  background-color: var(--color-white);
  color: var(--color-primary-900);
  border-color: var(--color-white);
}

.btn-sm {
  padding: 0.5rem 0.95rem;
  font-size: 0.85rem;
}

.btn-lg {
  padding: 0.95rem 1.85rem;
  font-size: 1.05rem;
}

.btn-block {
  width: 100%;
}

/* Badges & Tags */
.badge {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  font-family: var(--font-heading);
  font-size: 0.8rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  padding: 0.3rem 0.75rem;
  border-radius: var(--radius-full);
}

.badge-navy {
  background-color: var(--color-primary-100);
  color: var(--color-primary-800);
  border: 1px solid rgba(11, 37, 69, 0.15);
}

.badge-green {
  background-color: var(--color-accent-100);
  color: var(--color-accent-700);
  border: 1px solid rgba(5, 150, 105, 0.2);
}

.badge-orange {
  background-color: var(--color-highlight-100);
  color: var(--color-highlight-700);
  border: 1px solid rgba(217, 119, 6, 0.2);
}

/* ==========================================================================
   6. HERO SECTION
   ========================================================================== */
.hero-section {
  position: relative;
  min-height: 580px;
  background-color: var(--color-primary-900);
  display: flex;
  align-items: center;
  padding: clamp(3.5rem, 6vh, 5.25rem) 0 clamp(3rem, 5vh, 4.5rem);
  overflow: hidden;
  color: var(--color-white);
}

.hero-backdrop {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  z-index: 1;
}

.hero-backdrop img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center 30%;
  opacity: 0.42;
}

.hero-overlay {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: linear-gradient(
    110deg,
    rgba(7, 23, 44, 0.96) 0%,
    rgba(11, 37, 69, 0.88) 45%,
    rgba(7, 23, 44, 0.55) 80%,
    rgba(5, 150, 105, 0.30) 100%
  );
  z-index: 2;
}

.hero-content {
  position: relative;
  z-index: 3;
  max-width: 840px;
  text-align: left;
}

.hero-tag {
  margin-bottom: 1.25rem;
  display: flex;
  justify-content: flex-start;
}

.hero-tag .badge {
  font-size: 0.85rem;
  padding: 0.4rem 0.95rem;
  letter-spacing: 0.04em;
  font-weight: 600;
}

.hero-title {
  color: var(--color-white);
  font-size: clamp(2.15rem, 3.2vw + 0.6rem, 3.35rem);
  font-weight: 800;
  line-height: 1.2;
  margin-bottom: 1.25rem;
  letter-spacing: -0.02em;
  max-width: 780px;
}

.hero-title span {
  color: var(--color-accent-400);
}

.hero-lead {
  font-size: clamp(1.05rem, 1.1vw + 0.1rem, 1.18rem);
  line-height: 1.65;
  color: var(--color-slate-200);
  margin-bottom: 2rem;
  max-width: 700px;
}

.hero-actions {
  display: flex;
  align-items: center;
  justify-content: flex-start;
  gap: 1rem;
  flex-wrap: wrap;
  margin-bottom: 2.25rem;
}

.hero-meta-strip {
  display: flex;
  align-items: center;
  justify-content: flex-start;
  gap: clamp(1.25rem, 2.2vw, 2.5rem);
  padding-top: 1.75rem;
  border-top: 1px solid rgba(255, 255, 255, 0.18);
  flex-wrap: wrap;
}

.hero-meta-item {
  display: inline-flex;
  align-items: center;
  gap: 0.65rem;
  font-size: 0.92rem;
  font-weight: 500;
  color: var(--color-slate-200);
  white-space: nowrap;
}

.hero-meta-item i {
  color: var(--color-accent-400);
  font-size: 1.1rem;
  flex-shrink: 0;
}

/* Responsive adjustments for hero */
@media (max-width: 768px) {
  .hero-section {
    padding: 3.5rem 0;
    min-height: auto;
  }

  .hero-title {
    font-size: 2.1rem;
    line-height: 1.22;
  }

  .hero-lead {
    font-size: 1rem;
    margin-bottom: 1.75rem;
  }

  .hero-actions {
    gap: 0.85rem;
    margin-bottom: 1.85rem;
  }

  .hero-meta-strip {
    gap: 1rem;
    padding-top: 1.5rem;
  }

  .hero-meta-item {
    font-size: 0.88rem;
  }
}

@media (max-width: 520px) {
  .hero-actions {
    flex-direction: column;
    width: 100%;
  }

  .hero-actions .btn {
    width: 100%;
  }

  .hero-meta-strip {
    flex-direction: column;
    align-items: flex-start;
    gap: 0.75rem;
  }

  .hero-meta-item {
    white-space: normal;
  }
}

/* Page Sub-Hero Banner */
.page-banner {
  background-color: var(--color-primary-900);
  background-image: linear-gradient(135deg, #07172C 0%, #0E3A66 100%);
  color: var(--color-white);
  padding: clamp(3.75rem, 5vw + 0.5rem, 4.75rem) 0 clamp(3.25rem, 4vw + 0.5rem, 4.25rem);
  position: relative;
  overflow: hidden;
}

.page-banner::after {
  content: '';
  position: absolute;
  top: 0;
  right: 0;
  bottom: 0;
  width: 35%;
  background: radial-gradient(circle at 80% 50%, rgba(16, 185, 129, 0.15) 0%, transparent 70%);
  pointer-events: none;
}

.page-banner-content {
  position: relative;
  z-index: 2;
  width: 100%;
  max-width: var(--container-max);
  text-align: left;
}

.breadcrumbs {
  display: inline-flex;
  align-items: center;
  gap: 0.55rem;
  font-size: 0.85rem;
  font-weight: 500;
  color: var(--color-slate-300);
  margin-bottom: 1.25rem;
  text-align: left;
}

.breadcrumbs a {
  color: var(--color-accent-400);
  transition: color var(--transition-fast);
}

.breadcrumbs a:hover {
  color: var(--color-accent-300);
  text-decoration: underline;
}

.breadcrumbs i {
  color: var(--color-slate-400);
  font-size: 0.7rem;
}

.page-banner-title {
  color: var(--color-white);
  font-family: var(--font-heading);
  font-size: clamp(2.15rem, 3.2vw + 0.5rem, 2.85rem);
  font-weight: 800;
  line-height: 1.22;
  letter-spacing: -0.02em;
  max-width: 820px;
  margin-top: 0;
  margin-bottom: 1.25rem;
  text-align: left;
}

.page-banner-lead {
  font-size: clamp(1.05rem, 1vw + 0.15rem, 1.15rem);
  color: var(--color-slate-200);
  line-height: 1.62;
  max-width: 720px;
  margin: 0;
  text-align: left;
}

@media (max-width: 768px) {
  .page-banner {
    padding: 3.25rem 0 2.75rem;
  }

  .breadcrumbs {
    margin-bottom: 1rem;
    font-size: 0.8rem;
  }

  .page-banner-title {
    font-size: clamp(1.85rem, 5.5vw, 2.25rem);
    line-height: 1.25;
    margin-bottom: 1rem;
  }

  .page-banner-lead {
    font-size: 1rem;
    line-height: 1.58;
  }
}

@media (max-width: 480px) {
  .page-banner {
    padding: 2.75rem 0 2.25rem;
  }

  .page-banner-title {
    font-size: 1.75rem;
  }
}

/* ==========================================================================
   7. SECTIONS & LAYOUT BLOCKS
   ========================================================================== */
.section {
  padding: 5rem 0;
  position: relative;
}

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

.section-dark {
  background-color: var(--color-primary-900);
  color: var(--color-white);
}

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

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

.section-header {
  text-align: center;
  max-width: 760px;
  margin: 0 auto 3.5rem auto;
}

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

.section-subtitle {
  color: var(--color-accent-600);
  font-family: var(--font-heading);
  font-weight: 700;
  font-size: 0.85rem;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  margin-bottom: 0.65rem;
  display: block;
}

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

.section-lead {
  font-size: 1.1rem;
  color: var(--text-muted);
  line-height: 1.6;
}

/* Two Column Split Layout */
.grid-split-2 {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 3.5rem;
  align-items: center;
}

.grid-3 {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 2rem;
}

.grid-4 {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1.75rem;
}

/* Image Visual Frames */
.visual-frame {
  position: relative;
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-xl);
  border: 1px solid var(--border-color);
  background-color: var(--color-slate-100);
}

.visual-frame img {
  width: 100%;
  height: auto;
  object-fit: cover;
  transition: transform var(--transition-slow);
}

.visual-frame:hover img {
  transform: scale(1.03);
}

.visual-badge {
  position: absolute;
  bottom: 1.25rem;
  left: 1.25rem;
  background-color: rgba(11, 37, 69, 0.92);
  color: var(--color-white);
  padding: 0.75rem 1.25rem;
  border-radius: var(--radius-md);
  backdrop-filter: blur(6px);
  border: 1px solid rgba(255, 255, 255, 0.15);
  font-size: 0.85rem;
  max-width: 85%;
}

.visual-badge strong {
  display: block;
  font-family: var(--font-heading);
  font-size: 0.95rem;
  color: var(--color-accent-400);
}

/* ==========================================================================
   8. STATS / KPI SECTION
   ========================================================================== */
.stats-banner {
  background-color: var(--color-primary-800);
  color: var(--color-white);
  padding: 3.5rem 0;
  border-top: 3px solid var(--color-accent-500);
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.stats-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 2rem;
}

.stat-card {
  text-align: center;
  padding: 1.25rem 1rem;
  border-right: 1px solid rgba(255, 255, 255, 0.12);
}

.stat-card:last-child {
  border-right: none;
}

.stat-number {
  font-family: var(--font-heading);
  font-size: clamp(2.2rem, 3.5vw, 3rem);
  font-weight: 800;
  color: var(--color-accent-400);
  line-height: 1.1;
  margin-bottom: 0.4rem;
}

.stat-label {
  font-family: var(--font-heading);
  font-size: 1rem;
  font-weight: 600;
  color: var(--color-white);
  margin-bottom: 0.25rem;
}

.stat-subtext {
  font-size: 0.8rem;
  color: var(--color-slate-300);
}

/* ==========================================================================
   9. CARDS (SERVICES, PROJECTS, FEATURES)
   ========================================================================== */
.card {
  background-color: var(--bg-surface);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 2rem;
  box-shadow: var(--shadow-sm);
  transition: all var(--transition-normal);
  display: flex;
  flex-direction: column;
  position: relative;
}

.card:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow-xl);
  border-color: var(--color-accent-400);
}

.card-icon-box {
  width: 58px;
  height: 58px;
  border-radius: var(--radius-md);
  background-color: var(--color-primary-50);
  color: var(--color-primary-800);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.6rem;
  margin-bottom: 1.5rem;
  transition: all var(--transition-fast);
}

.card:hover .card-icon-box {
  background-color: var(--color-accent-600);
  color: var(--color-white);
}

.card-title {
  font-size: 1.3rem;
  margin-bottom: 0.75rem;
  color: var(--text-heading);
}

.card-text {
  color: var(--text-secondary);
  font-size: 0.95rem;
  line-height: 1.6;
  margin-bottom: 1.5rem;
  flex-grow: 1;
}

.card-link {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-family: var(--font-heading);
  font-weight: 700;
  font-size: 0.9rem;
  color: var(--color-primary-700);
}

.card-link:hover {
  color: var(--color-accent-600);
  gap: 0.75rem;
}

/* Image Card (Projects & Featured Services) */
.project-card {
  background-color: var(--bg-surface);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  transition: all var(--transition-normal);
  display: flex;
  flex-direction: column;
}

.project-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-xl);
  border-color: var(--color-accent-500);
}

.project-card-image {
  position: relative;
  height: 240px;
  overflow: hidden;
  background-color: var(--color-slate-100);
}

.project-card-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform var(--transition-slow);
}

.project-card:hover .project-card-image img {
  transform: scale(1.05);
}

.project-card-badge {
  position: absolute;
  top: 1rem;
  left: 1rem;
  z-index: 2;
}

.project-card-location {
  position: absolute;
  bottom: 0.75rem;
  left: 1rem;
  background-color: rgba(7, 23, 44, 0.85);
  color: var(--color-white);
  padding: 0.25rem 0.65rem;
  border-radius: var(--radius-sm);
  font-size: 0.8rem;
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  backdrop-filter: blur(4px);
}

.project-card-body {
  padding: 1.5rem;
  display: flex;
  flex-direction: column;
  flex-grow: 1;
}

.project-card-title {
  font-size: 1.25rem;
  margin-bottom: 0.6rem;
  color: var(--text-heading);
}

.project-card-desc {
  font-size: 0.92rem;
  color: var(--text-secondary);
  line-height: 1.55;
  margin-bottom: 1.25rem;
  flex-grow: 1;
}

.project-card-meta {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0.75rem;
  padding: 0.85rem 0;
  border-top: 1px solid var(--border-color);
  border-bottom: 1px solid var(--border-color);
  margin-bottom: 1.25rem;
  font-size: 0.85rem;
}

.project-meta-label {
  display: block;
  color: var(--text-muted);
  font-size: 0.75rem;
  text-transform: uppercase;
  font-weight: 600;
}

.project-meta-val {
  font-weight: 600;
  color: var(--color-primary-800);
}

/* ==========================================================================
   10. FILTER TABS & SEARCH
   ========================================================================== */
.filter-tabs {
  display: flex;
  justify-content: center;
  gap: 0.5rem;
  flex-wrap: wrap;
  margin-bottom: 2.75rem;
}

.filter-btn {
  background-color: var(--bg-surface);
  border: 1px solid var(--border-color);
  color: var(--color-slate-700);
  font-family: var(--font-heading);
  font-weight: 600;
  font-size: 0.9rem;
  padding: 0.6rem 1.25rem;
  border-radius: var(--radius-full);
  cursor: pointer;
  transition: all var(--transition-fast);
}

.filter-btn:hover {
  background-color: var(--color-slate-100);
  color: var(--color-primary-800);
}

.filter-btn.active {
  background-color: var(--color-primary-800);
  color: var(--color-white);
  border-color: var(--color-primary-800);
  box-shadow: 0 2px 8px rgba(11, 37, 69, 0.2);
}

/* ==========================================================================
   11. PROJECT DETAIL MODAL
   ========================================================================== */
.modal-overlay {
  display: none;
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background-color: rgba(7, 23, 44, 0.75);
  backdrop-filter: blur(5px);
  z-index: 2000;
  align-items: center;
  justify-content: center;
  padding: 1.5rem;
  opacity: 0;
  transition: opacity var(--transition-normal);
}

.modal-overlay.active {
  display: flex;
  opacity: 1;
}

.modal-container {
  background-color: var(--color-white);
  border-radius: var(--radius-xl);
  max-width: 860px;
  width: 100%;
  max-height: 90vh;
  overflow-y: auto;
  box-shadow: var(--shadow-xl);
  position: relative;
  transform: translateY(20px);
  transition: transform var(--transition-normal);
}

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

.modal-close-btn {
  position: absolute;
  top: 1.25rem;
  right: 1.25rem;
  width: 40px;
  height: 40px;
  border-radius: var(--radius-full);
  background-color: rgba(255, 255, 255, 0.9);
  border: 1px solid var(--border-color);
  color: var(--color-slate-700);
  font-size: 1.2rem;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  z-index: 10;
  transition: all var(--transition-fast);
}

.modal-close-btn:hover {
  background-color: var(--color-slate-100);
  color: var(--color-primary-900);
}

.modal-header-image {
  height: 320px;
  position: relative;
  background-color: var(--color-slate-200);
}

.modal-header-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.modal-body {
  padding: 2.25rem;
}

.modal-specs-table {
  width: 100%;
  border-collapse: collapse;
  margin: 1.5rem 0;
  font-size: 0.95rem;
}

.modal-specs-table th,
.modal-specs-table td {
  padding: 0.75rem 1rem;
  border: 1px solid var(--border-color);
  text-align: left;
}

.modal-specs-table th {
  background-color: var(--color-slate-50);
  color: var(--color-primary-800);
  width: 35%;
  font-weight: 600;
}

/* ==========================================================================
   12. WHY CHOOSE US & QUALITY GRID
   ========================================================================== */
.feature-list {
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
}

.feature-item {
  display: flex;
  align-items: flex-start;
  gap: 1rem;
}

.feature-check {
  width: 32px;
  height: 32px;
  min-width: 32px;
  border-radius: var(--radius-full);
  background-color: var(--color-accent-100);
  color: var(--color-accent-700);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.95rem;
  margin-top: 0.2rem;
}

.feature-item h4 {
  font-size: 1.15rem;
  margin-bottom: 0.25rem;
}

.feature-item p {
  color: var(--text-secondary);
  font-size: 0.92rem;
  line-height: 1.5;
}

/* Pill Highlights */
.pill-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1rem;
  margin-top: 1.5rem;
}

.pill-card {
  background-color: var(--bg-subtle);
  border: 1px solid var(--border-color);
  padding: 1.25rem;
  border-radius: var(--radius-md);
  border-left: 4px solid var(--color-accent-500);
}

.pill-card h5 {
  font-size: 1.05rem;
  color: var(--color-primary-800);
  margin-bottom: 0.25rem;
}

.pill-card p {
  font-size: 0.85rem;
  color: var(--text-muted);
}

/* ==========================================================================
   13. DOCUMENT & TENDER PAGES
   ========================================================================== */
.document-table {
  width: 100%;
  border-collapse: separate;
  border-spacing: 0;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  overflow: hidden;
  background-color: var(--color-white);
  box-shadow: var(--shadow-sm);
  margin-bottom: 2.5rem;
}

.document-table th {
  background-color: var(--color-primary-50);
  color: var(--color-primary-800);
  font-family: var(--font-heading);
  font-weight: 700;
  font-size: 0.9rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  padding: 1rem 1.25rem;
  border-bottom: 1px solid var(--border-color);
  text-align: left;
}

.document-table td {
  padding: 1.1rem 1.25rem;
  border-bottom: 1px solid var(--border-color);
  vertical-align: middle;
  font-size: 0.95rem;
}

.document-table tr:last-child td {
  border-bottom: none;
}

.document-table tr:hover td {
  background-color: var(--color-slate-50);
}

.doc-name {
  font-weight: 600;
  color: var(--text-heading);
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.doc-name i {
  color: var(--color-primary-700);
  font-size: 1.25rem;
}

.doc-status-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  padding: 0.25rem 0.65rem;
  border-radius: var(--radius-full);
  font-size: 0.8rem;
  font-weight: 600;
}

.doc-status-verified {
  background-color: var(--color-accent-100);
  color: var(--color-accent-700);
}

.doc-status-restricted {
  background-color: var(--color-highlight-100);
  color: var(--color-highlight-700);
}

.callout-box {
  background-color: var(--color-primary-50);
  border-left: 4px solid var(--color-primary-700);
  padding: 1.5rem;
  border-radius: 0 var(--radius-md) var(--radius-md) 0;
  margin-bottom: 2rem;
}

.callout-box-warning {
  background-color: var(--color-highlight-50);
  border-left-color: var(--color-highlight-600);
}

/* ==========================================================================
   14. FORMS & INPUT CONTROLS
   ========================================================================== */
.contact-grid {
  display: grid;
  grid-template-columns: 1.2fr 1fr;
  gap: 3.5rem;
}

.contact-card {
  background-color: var(--color-white);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 2.5rem;
  box-shadow: var(--shadow-md);
}

.form-group {
  margin-bottom: 1.35rem;
}

.form-label {
  display: block;
  font-family: var(--font-heading);
  font-weight: 600;
  font-size: 0.9rem;
  color: var(--color-slate-800);
  margin-bottom: 0.45rem;
}

.form-label .req {
  color: #DC2626;
}

.form-control {
  width: 100%;
  padding: 0.75rem 1rem;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-sm);
  background-color: var(--color-white);
  color: var(--color-slate-900);
  font-size: 0.95rem;
  transition: all var(--transition-fast);
}

.form-control:focus {
  outline: none;
  border-color: var(--color-primary-600);
  box-shadow: 0 0 0 3px rgba(14, 58, 102, 0.12);
}

.form-control.error {
  border-color: #DC2626;
  background-color: #FEF2F2;
}

.form-error-msg {
  color: #DC2626;
  font-size: 0.8rem;
  margin-top: 0.35rem;
  display: none;
}

.form-control.error + .form-error-msg {
  display: block;
}

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.25rem;
}

/* Alert Notification Box */
.alert {
  padding: 1rem 1.25rem;
  border-radius: var(--radius-md);
  margin-bottom: 1.5rem;
  font-size: 0.95rem;
  display: flex;
  align-items: flex-start;
  gap: 0.75rem;
}

.alert-success {
  background-color: var(--color-accent-50);
  border: 1px solid var(--color-accent-400);
  color: var(--color-accent-700);
}

.alert-info {
  background-color: var(--color-primary-50);
  border: 1px solid var(--color-primary-500);
  color: var(--color-primary-800);
}

/* ==========================================================================
   15. CALL TO ACTION (CTA) BANNER
   ========================================================================== */
.cta-banner {
  background: linear-gradient(135deg, var(--color-primary-900) 0%, var(--color-primary-800) 70%, var(--color-accent-700) 100%);
  color: var(--color-white);
  border-radius: var(--radius-xl);
  padding: 4rem 3.5rem;
  box-shadow: var(--shadow-xl);
  position: relative;
  overflow: hidden;
}

.cta-banner::before {
  content: '';
  position: absolute;
  top: -50%;
  right: -20%;
  width: 400px;
  height: 400px;
  border-radius: var(--radius-full);
  background: radial-gradient(circle, rgba(16, 185, 129, 0.25) 0%, transparent 70%);
  pointer-events: none;
}

.cta-content {
  position: relative;
  z-index: 2;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 2.5rem;
  flex-wrap: wrap;
}

.cta-text {
  max-width: 680px;
}

.cta-title {
  color: var(--color-white);
  font-size: clamp(1.85rem, 2.5vw + 0.5rem, 2.4rem);
  margin-bottom: 0.75rem;
}

.cta-desc {
  color: var(--color-slate-200);
  font-size: 1.1rem;
  line-height: 1.6;
}

.cta-actions {
  display: flex;
  gap: 1rem;
  flex-wrap: wrap;
}

/* ==========================================================================
   16. FOOTER
   ========================================================================== */
.site-footer {
  background-color: var(--color-primary-900);
  color: var(--color-slate-300);
  padding: 5rem 0 2rem;
  border-top: 4px solid var(--color-accent-600);
  font-size: 0.92rem;
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1.5fr;
  gap: 3rem;
  margin-bottom: 3.5rem;
}

.footer-brand img {
  height: 52px;
  width: auto;
  margin-bottom: 1.25rem;
}

.footer-bio {
  color: var(--color-slate-300);
  line-height: 1.6;
  margin-bottom: 1.5rem;
}

.footer-heading {
  font-family: var(--font-heading);
  color: var(--color-white);
  font-size: 1.1rem;
  font-weight: 700;
  margin-bottom: 1.35rem;
  position: relative;
  padding-bottom: 0.65rem;
}

.footer-heading::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 32px;
  height: 2px;
  background-color: var(--color-accent-500);
}

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

.footer-link {
  color: var(--color-slate-300);
  transition: all var(--transition-fast);
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
}

.footer-link:hover {
  color: var(--color-accent-400);
  transform: translateX(3px);
}

.footer-contact-list {
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.footer-contact-item {
  display: flex;
  align-items: flex-start;
  gap: 0.75rem;
}

.footer-contact-item i {
  color: var(--color-accent-400);
  margin-top: 0.25rem;
  font-size: 1rem;
}

.footer-contact-item a {
  color: var(--color-slate-200);
}

.footer-contact-item a:hover {
  color: var(--color-accent-400);
}

.footer-bottom {
  padding-top: 2rem;
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 1rem;
  font-size: 0.85rem;
  color: var(--color-slate-400);
}

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

.footer-bottom-links a {
  color: var(--color-slate-400);
}

.footer-bottom-links a:hover {
  color: var(--color-white);
}

/* ==========================================================================
   17. FLOATING ACTIONS (WHATSAPP & BACK-TO-TOP)
   ========================================================================== */
.floating-actions {
  position: fixed;
  bottom: 1.75rem;
  right: 1.75rem;
  z-index: 999;
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.btn-floating {
  width: 50px;
  height: 50px;
  border-radius: var(--radius-full);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.4rem;
  box-shadow: var(--shadow-lg);
  cursor: pointer;
  transition: all var(--transition-normal);
  border: none;
}

.btn-whatsapp {
  background-color: #25D366;
  color: var(--color-white);
}

.btn-whatsapp:hover {
  background-color: #1EBE5D;
  transform: scale(1.08);
}

.btn-back-to-top {
  background-color: var(--color-primary-800);
  color: var(--color-white);
  opacity: 0;
  visibility: hidden;
  transform: translateY(10px);
}

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

.btn-back-to-top:hover {
  background-color: var(--color-primary-700);
  transform: translateY(-3px);
}

/* ==========================================================================
   18. RESPONSIVE MEDIA QUERIES
   ========================================================================== */
@media (max-width: 1024px) {
  .footer-grid {
    grid-template-columns: 1fr 1fr;
    gap: 2.5rem;
  }

  .grid-3 {
    grid-template-columns: repeat(2, 1fr);
  }

  .grid-4 {
    grid-template-columns: repeat(2, 1fr);
  }

  .stats-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 1.5rem;
  }

  .stat-card {
    border-right: none;
    border-bottom: 1px solid rgba(255, 255, 255, 0.12);
  }

  .stat-card:nth-last-child(-n+2) {
    border-bottom: none;
  }
}

@media (max-width: 768px) {
  .topbar-content {
    justify-content: center;
    text-align: center;
  }

  .topbar-left, .topbar-right {
    justify-content: center;
    gap: 0.85rem;
  }

  .grid-split-2 {
    grid-template-columns: 1fr;
    gap: 2.5rem;
  }

  .grid-3 {
    grid-template-columns: 1fr;
  }

  .grid-4 {
    grid-template-columns: 1fr;
  }

  .pill-grid {
    grid-template-columns: 1fr;
  }

  .contact-grid {
    grid-template-columns: 1fr;
  }

  .form-row {
    grid-template-columns: 1fr;
  }

  .footer-grid {
    grid-template-columns: 1fr;
    gap: 2.5rem;
  }

  .cta-content {
    text-align: center;
    justify-content: center;
  }

  .cta-actions {
    justify-content: center;
  }

  .stats-grid {
    grid-template-columns: 1fr;
  }

  .stat-card {
    border-bottom: 1px solid rgba(255, 255, 255, 0.12);
  }

  .stat-card:last-child {
    border-bottom: none;
  }

  .modal-specs-table th,
  .modal-specs-table td {
    display: block;
    width: 100%;
  }

  .modal-specs-table th {
    border-bottom: none;
  }
}