/* ==========================================================================
   M4 VISION — OFFICIAL BRAND STYLESHEET
   Light-Theme, Premium, Human-Designed Software Company Portfolio
   Brand Colors:
     - Primary Blue: #0A2C52
     - Silver Gray:  #B0B5BA
     - Pure White:   #FFFFFF
   ========================================================================== */

:root {
  /* Core Brand Colors */
  --color-primary: #0A2C52;
  --color-primary-hover: #0E3D70;
  --color-primary-active: #061B33;
  --color-primary-tint: #EEF4FA;
  --color-primary-subtle: #E2ECF7;
  
  --color-silver: #B0B5BA;
  --color-silver-light: #D6DADC;
  --color-silver-subtle: #F1F3F5;
  --color-silver-dark: #6C757D;

  --color-white: #FFFFFF;
  --color-bg-base: #FFFFFF;
  --color-bg-subtle: #F8FAFC;
  --color-bg-elevated: #F1F5F9;
  --color-bg-alt: #EBF1F7;

  /* Typography / Text Colors */
  --color-text-main: #142334;
  --color-text-heading: #0A2C52;
  --color-text-muted: #536476;
  --color-text-light: #7E8E9F;

  /* Borders & Dividers */
  --border-color-light: #E4E8ED;
  --border-color-medium: #CBD3DC;
  --border-color-focus: #0A2C52;

  /* Shadows (Subtle, professional, realistic, not glowing) */
  --shadow-xs: 0 1px 2px rgba(10, 44, 82, 0.04);
  --shadow-sm: 0 2px 6px rgba(10, 44, 82, 0.06);
  --shadow-md: 0 6px 16px rgba(10, 44, 82, 0.07);
  --shadow-lg: 0 12px 28px rgba(10, 44, 82, 0.09);
  --shadow-hover: 0 14px 32px rgba(10, 44, 82, 0.12);

  /* Typography Fonts */
  --font-heading: 'Plus Jakarta Sans', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
  --font-body: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
  --font-mono: 'JetBrains Mono', 'Fira Code', Menlo, Monaco, Consolas, monospace;

  /* Layout */
  --container-max: 1240px;
  --header-height: 104px;
  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 16px;
  --radius-full: 9999px;

  /* Transitions */
  --transition-fast: 0.18s cubic-bezier(0.16, 1, 0.3, 1);
  --transition-normal: 0.28s cubic-bezier(0.16, 1, 0.3, 1);
  --transition-smooth: 0.4s cubic-bezier(0.16, 1, 0.3, 1);
}

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

html {
  font-size: 16px;
  scroll-behavior: smooth;
  scroll-padding-top: var(--header-height);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

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

/* Accessible focus outline */
:focus-visible {
  outline: 2px solid var(--color-primary);
  outline-offset: 3px;
}

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

p {
  color: var(--color-text-muted);
  line-height: 1.7;
}

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

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

/* Layout Utilities */
.container {
  width: 100%;
  max-width: var(--container-max);
  margin-left: auto;
  margin-right: auto;
  padding-left: 28px;
  padding-right: 28px;
}

.section {
  padding-top: 104px;
  padding-bottom: 104px;
  position: relative;
}

.section-bg-subtle {
  background-color: var(--color-bg-subtle);
  border-top: 1px solid var(--border-color-light);
  border-bottom: 1px solid var(--border-color-light);
}

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

/* Section Header Block */
.section-header {
  margin-bottom: 56px;
}

.section-header.text-center {
  text-align: center;
  max-width: 760px;
  margin-left: auto;
  margin-right: auto;
}

.section-eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-family: var(--font-heading);
  font-size: 0.8125rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--color-primary);
  margin-bottom: 12px;
}

.section-eyebrow::before {
  content: '';
  display: inline-block;
  width: 8px;
  height: 8px;
  background-color: var(--color-primary);
  border-radius: 2px;
}

.section-title {
  font-size: 2.375rem;
  font-weight: 800;
  color: var(--color-primary);
  margin-bottom: 16px;
  letter-spacing: -0.03em;
}

.section-subtitle {
  font-size: 1.125rem;
  color: var(--color-text-muted);
  max-width: 680px;
}

/* Button Styles (Intentional, sharp, human-crafted) */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  font-family: var(--font-heading);
  font-size: 0.9375rem;
  font-weight: 600;
  padding: 13px 26px;
  border-radius: var(--radius-md);
  border: 1px solid transparent;
  cursor: pointer;
  transition: all var(--transition-fast);
  white-space: nowrap;
  line-height: 1.2;
}

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

.btn-primary:hover {
  background-color: var(--color-primary-hover);
  border-color: var(--color-primary-hover);
  color: var(--color-white);
  transform: translateY(-1px);
  box-shadow: var(--shadow-md);
}

.btn-primary:active {
  background-color: var(--color-primary-active);
  transform: translateY(0);
}

.btn-secondary {
  background-color: var(--color-white);
  color: var(--color-primary);
  border-color: var(--border-color-medium);
}

.btn-secondary:hover {
  background-color: var(--color-bg-subtle);
  border-color: var(--color-primary);
  color: var(--color-primary);
  transform: translateY(-1px);
}

.btn-sm {
  padding: 9px 18px;
  font-size: 0.875rem;
}

.btn-lg {
  padding: 16px 34px;
  font-size: 1.0625rem;
}

.btn-icon {
  width: 18px;
  height: 18px;
  transition: transform var(--transition-fast);
}

.btn:hover .btn-icon {
  transform: translateX(3px);
}

/* ==========================================================================
   NAVIGATION BAR
   ========================================================================== */
.site-header {
  position: sticky;
  top: 0;
  left: 0;
  width: 100%;
  height: var(--header-height);
  background-color: rgba(255, 255, 255, 0.98);
  border-bottom: 1px solid var(--border-color-light);
  z-index: 1000;
  transition: background-color var(--transition-normal), box-shadow var(--transition-normal);
}

.site-header.scrolled {
  box-shadow: var(--shadow-sm);
  background-color: #FFFFFF;
}

.navbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 100%;
}

.brand-logo-link {
  display: flex;
  align-items: center;
  gap: 14px;
  text-decoration: none;
  transition: opacity var(--transition-fast);
}

.brand-logo-link:hover {
  opacity: 0.9;
}

.brand-logo-img {
  height: 78px;
  width: auto;
  max-width: 200px;
  object-fit: contain;
  transition: transform var(--transition-fast);
}

.brand-logo-link:hover .brand-logo-img {
  transform: scale(1.04);
}

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

.brand-title {
  font-family: var(--font-heading);
  font-size: 1.45rem;
  font-weight: 800;
  letter-spacing: -0.02em;
  color: var(--color-primary);
  line-height: 1.1;
}

.brand-tagline-micro {
  font-family: var(--font-heading);
  font-size: 0.68rem;
  font-weight: 700;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--color-silver-dark);
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 22px;
  list-style: none;
}

.nav-link {
  font-family: var(--font-heading);
  font-size: 0.9375rem;
  font-weight: 600;
  color: var(--color-text-main);
  position: relative;
  padding: 6px 2px;
  transition: color var(--transition-fast);
  -webkit-background-clip: unset;
  background-clip: unset;
  text-shadow: none;
}

.nav-link:hover {
  color: transparent;
  background: linear-gradient(110deg, #0A2C52 0%, #2a7fe0 50%, #6fa8e6 100%);
  -webkit-background-clip: text;
  background-clip: text;
  text-shadow: 0 0 18px rgba(111, 168, 230, 0.45);
  filter: drop-shadow(0 0 8px rgba(111, 168, 230, 0.35));
}

.nav-link.active {
  color: transparent;
  background: linear-gradient(110deg, #0A2C52 0%, #1a6abf 55%, #6fa8e6 100%);
  -webkit-background-clip: text;
  background-clip: text;
  text-shadow: 0 0 14px rgba(111, 168, 230, 0.35);
  filter: drop-shadow(0 0 6px rgba(111, 168, 230, 0.28));
}

.nav-link::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0%;
  height: 2px;
  background: linear-gradient(90deg, #0A2C52, #6fa8e6);
  border-radius: 2px;
  transition: width var(--transition-fast), opacity var(--transition-fast);
  opacity: 0;
}

.nav-link:hover::after,
.nav-link.active::after {
  width: 100%;
  opacity: 1;
}

.nav-cta-wrap {
  display: flex;
  align-items: center;
  gap: 16px;
}

.mobile-menu-toggle {
  display: none;
  background: none;
  border: 1px solid var(--border-color-light);
  padding: 8px;
  border-radius: var(--radius-sm);
  cursor: pointer;
  color: var(--color-primary);
}

/* Mobile Drawer */
.mobile-drawer {
  display: none;
  position: fixed;
  top: var(--header-height);
  left: 0;
  width: 100%;
  background-color: var(--color-white);
  border-bottom: 1px solid var(--border-color-light);
  padding: 24px;
  box-shadow: var(--shadow-lg);
  z-index: 999;
}

.mobile-drawer.open {
  display: block;
}

.mobile-nav-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 16px;
  margin-bottom: 20px;
}

.mobile-nav-list a {
  font-size: 1.125rem;
  font-weight: 700;
  color: var(--color-primary);
}

/* ==========================================================================
   HERO SECTION (Light Theme + Left Copy + Right 3D Slider)
   ========================================================================== */
.hero-section {
  padding-top: 56px;
  padding-bottom: 72px;
  background: linear-gradient(180deg, #FFFFFF 0%, #F8FAFC 100%);
  border-bottom: 1px solid var(--border-color-light);
  position: relative;
  overflow: hidden;
}

.hero-grid {
  display: grid;
  grid-template-columns: 1.05fr 1.15fr;
  gap: 48px;
  align-items: center;
}

.hero-content {
  display: flex;
  flex-direction: column;
  z-index: 2;
}

.hero-eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  background-color: var(--color-primary-tint);
  border: 1px solid var(--color-primary-subtle);
  padding: 6px 14px;
  border-radius: var(--radius-full);
  width: fit-content;
  margin-bottom: 24px;
}

.hero-eyebrow-dot {
  width: 7px;
  height: 7px;
  background-color: var(--color-primary);
  border-radius: 50%;
}

.hero-eyebrow-text {
  font-family: var(--font-heading);
  font-size: 0.8125rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--color-primary);
}

.hero-title {
  font-size: 3.5rem;
  font-weight: 800;
  letter-spacing: -0.035em;
  color: var(--color-primary);
  line-height: 1.12;
  margin-bottom: 20px;
}

.hero-supporting {
  font-size: 1.1875rem;
  color: var(--color-text-muted);
  line-height: 1.65;
  margin-bottom: 28px;
  max-width: 540px;
}

/* Core Expertise Strip (Clean, understated typography) */
.hero-expertise-strip {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px 12px;
  padding: 12px 18px;
  background-color: var(--color-white);
  border: 1px solid var(--border-color-light);
  border-radius: var(--radius-md);
  margin-bottom: 36px;
  max-width: 540px;
  box-shadow: var(--shadow-xs);
}

.expertise-item {
  font-family: var(--font-heading);
  font-size: 0.8125rem;
  font-weight: 600;
  color: var(--color-primary);
}

.expertise-divider {
  color: var(--color-silver);
  font-size: 0.875rem;
}

.hero-actions {
  display: flex;
  align-items: center;
  gap: 16px;
  flex-wrap: wrap;
  margin-bottom: 32px;
}

.hero-trust-row {
  display: flex;
  align-items: center;
  gap: 24px;
  padding-top: 20px;
  border-top: 1px solid var(--border-color-light);
}

.trust-stat {
  display: flex;
  flex-direction: column;
}

.trust-stat-number {
  font-family: var(--font-heading);
  font-size: 1.25rem;
  font-weight: 800;
  color: var(--color-primary);
  line-height: 1.1;
}

.trust-stat-label {
  font-size: 0.75rem;
  color: var(--color-text-muted);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  font-weight: 600;
}

.trust-separator {
  width: 1px;
  height: 28px;
  background-color: var(--border-color-light);
}

/* ==========================================================================
   HERO 3D TECHNOLOGY SLIDER (Right Side)
   ========================================================================== */
.hero-slider-wrapper {
  position: relative;
  background-color: var(--color-white);
  border: 1px solid var(--border-color-light);
  border-radius: var(--radius-lg);
  padding: 16px;
  box-shadow: var(--shadow-lg);
  display: flex;
  flex-direction: column;
}

.slider-top-bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 8px 12px 14px;
  border-bottom: 1px solid var(--border-color-light);
  flex-wrap: wrap;
  gap: 10px;
}

.slider-category-tabs {
  display: flex;
  gap: 6px;
  flex-wrap: wrap;
}

.slider-tab-btn {
  background: transparent;
  border: 1px solid transparent;
  border-radius: var(--radius-sm);
  padding: 6px 12px;
  font-family: var(--font-heading);
  font-size: 0.75rem;
  font-weight: 700;
  color: var(--color-text-muted);
  cursor: pointer;
  transition: all var(--transition-fast);
}

.slider-tab-btn:hover {
  color: var(--color-primary);
  background-color: var(--color-bg-subtle);
}

.slider-tab-btn.active {
  background-color: var(--color-primary-tint);
  border-color: var(--color-primary-subtle);
  color: var(--color-primary);
}

.slider-interaction-hint {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 0.6875rem;
  color: var(--color-silver-dark);
  font-weight: 500;
}

.slider-interaction-hint svg {
  width: 14px;
  height: 14px;
  color: var(--color-silver-dark);
}

/* 3D Canvas Container */
.canvas-container {
  width: 100%;
  height: 420px;
  position: relative;
  background: radial-gradient(circle at center, #FFFFFF 0%, #F5F7FA 100%);
  border-radius: var(--radius-md);
  overflow: hidden;
  cursor: grab;
}

.canvas-container:active {
  cursor: grabbing;
}

#hero-3d-canvas {
  width: 100%;
  height: 100%;
  display: block;
}

/* Specs HUD Badge Overlay (Dynamic details for active 3D model) */
.model-specs-hud {
  position: absolute;
  bottom: 16px;
  left: 16px;
  background-color: rgba(255, 255, 255, 0.94);
  border: 1px solid var(--border-color-light);
  border-radius: var(--radius-md);
  padding: 12px 16px;
  box-shadow: var(--shadow-sm);
  backdrop-filter: blur(6px);
  pointer-events: none;
  max-width: 270px;
  transition: opacity var(--transition-fast);
}

.hud-badge-title {
  font-family: var(--font-heading);
  font-size: 0.8125rem;
  font-weight: 800;
  color: var(--color-primary);
  margin-bottom: 2px;
}

.hud-badge-desc {
  font-size: 0.6875rem;
  color: var(--color-text-muted);
  line-height: 1.35;
}

.hud-tag {
  display: inline-block;
  margin-top: 6px;
  font-size: 0.625rem;
  font-weight: 700;
  letter-spacing: 0.05em;
  padding: 2px 7px;
  background-color: var(--color-primary-tint);
  color: var(--color-primary);
  border-radius: 4px;
}

/* Slider Controls Bottom Bar */
.slider-bottom-bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-top: 14px;
  border-top: 1px solid var(--border-color-light);
}

.slider-nav-arrows {
  display: flex;
  gap: 8px;
}

.slider-arrow-btn {
  width: 36px;
  height: 36px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border-color-medium);
  background-color: var(--color-white);
  color: var(--color-primary);
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: all var(--transition-fast);
}

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

.slider-dots-group {
  display: flex;
  align-items: center;
  gap: 8px;
}

.slider-dot {
  width: 8px;
  height: 8px;
  border-radius: var(--radius-full);
  background-color: var(--border-color-medium);
  border: none;
  cursor: pointer;
  transition: all var(--transition-fast);
}

.slider-dot.active {
  width: 24px;
  background-color: var(--color-primary);
}

.slider-reset-btn {
  background: none;
  border: none;
  color: var(--color-text-muted);
  font-size: 0.75rem;
  font-weight: 600;
  cursor: pointer;
  display: flex;
  align-items: center;
  gap: 4px;
  padding: 6px 10px;
  border-radius: var(--radius-sm);
}

.slider-reset-btn:hover {
  color: var(--color-primary);
  background-color: var(--color-bg-subtle);
}

/* ==========================================================================
   OUR STORY SECTION (Theme Blue Background + White Card Container)
   ========================================================================== */
.about-section {
  background-color: #0A2C52;
  background: linear-gradient(180deg, #0A2C52 0%, #072240 100%);
  padding-top: 100px;
  padding-bottom: 100px;
  position: relative;
}

.our-story-card {
  background-color: #FFFFFF;
  border-radius: 24px;
  padding: 42px 42px 44px;
  box-shadow: 0 24px 60px rgba(0, 0, 0, 0.35);
  border: 1px solid rgba(255, 255, 255, 0.25);
  max-width: 860px;
  margin: 0 auto;
}

.our-story-header {
  text-align: center;
  max-width: 680px;
  margin: 0 auto 32px;
}

.our-story-title {
  font-family: var(--font-heading);
  font-size: 2.2rem;
  font-weight: 800;
  color: #142334;
  letter-spacing: -0.03em;
  margin-bottom: 10px;
}

.our-story-subtitle {
  font-size: 0.95rem;
  color: #536476;
  line-height: 1.55;
  font-weight: 500;
  max-width: 580px;
  margin: 0 auto;
}

.our-story-grid {
  display: grid;
  grid-template-columns: 1.15fr 0.85fr;
  gap: 32px;
  align-items: center;
}

.our-story-content {
  display: flex;
  flex-direction: column;
}

.our-story-text {
  font-size: 0.925rem;
  color: #536476;
  line-height: 1.75;
  margin-bottom: 0;
}

/* Dark Blue Pill/Capsule Stats Container */
.story-stats-capsule {
  display: inline-flex;
  align-items: center;
  background: #0A2C52;
  background: linear-gradient(135deg, #0A2C52 0%, #103b6b 100%);
  border-radius: 18px;
  padding: 18px 24px;
  box-shadow: 0 10px 24px rgba(10, 44, 82, 0.22);
  width: 100%;
  max-width: 540px;
}

.story-stat-col {
  flex: 1;
  text-align: center;
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.story-stat-label {
  font-family: var(--font-heading);
  font-size: 0.8125rem;
  color: #D6DADC;
  font-weight: 600;
  letter-spacing: 0.01em;
  white-space: nowrap;
}

.story-stat-num {
  font-family: var(--font-heading);
  font-size: 1.75rem;
  font-weight: 800;
  color: #FFFFFF;
  line-height: 1.1;
  letter-spacing: -0.02em;
}

.story-stat-divider {
  width: 1px;
  height: 44px;
  background-color: rgba(255, 255, 255, 0.22);
  margin: 0 12px;
}

/* Story Right Image Wrap */
.our-story-image-wrap {
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
}

.our-story-img {
  width: 100%;
  max-width: 520px;
  height: auto;
  border-radius: var(--radius-md);
  object-fit: contain;
  transition: transform var(--transition-normal);
}

.our-story-img:hover {
  transform: scale(1.02);
}

@media (max-width: 991px) {
  .our-story-card {
    padding: 36px 24px 44px;
    border-radius: 20px;
  }
  .our-story-grid {
    grid-template-columns: 1fr;
    gap: 36px;
  }
  .our-story-image-wrap {
    order: -1;
  }
  .story-stats-capsule {
    max-width: 100%;
  }
}

@media (max-width: 576px) {
  .our-story-card {
    padding: 28px 18px 36px;
  }
  .our-story-title {
    font-size: 2.15rem;
  }
  .story-stats-capsule {
    flex-direction: column;
    gap: 14px;
    padding: 18px;
    border-radius: var(--radius-md);
  }
  .story-stat-divider {
    width: 80%;
    height: 1px;
    margin: 0 auto;
  }
}

/* ==========================================================================
   SERVICES SECTION (Rotating Cards Deck Matching Reference Layout)
   ========================================================================== */
.services-section {
  background-color: #F4F7FA;
  background: linear-gradient(180deg, #F4F7FA 0%, #EBF1F7 100%);
  padding-top: 96px;
  padding-bottom: 104px;
  overflow: hidden;
  position: relative;
}

.rotating-services-stage {
  position: relative;
  width: 100%;
  max-width: 1100px;
  margin: 0 auto;
  min-height: 520px;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  perspective: 1200px;
}

.rotating-cards-track {
  position: relative;
  width: 100%;
  height: 440px;
  display: flex;
  align-items: center;
  justify-content: center;
  transform-style: preserve-3d;
}

.service-rot-card {
  position: absolute;
  width: 275px;
  height: 385px;
  border-radius: 24px;
  padding: 30px 24px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  box-shadow: 0 18px 40px rgba(10, 44, 82, 0.14);
  transition: all 0.65s cubic-bezier(0.16, 1, 0.3, 1);
  cursor: pointer;
  user-select: none;
  transform-origin: center bottom;
  will-change: transform, opacity;
}

/* Card 1: Silver / Slate */
.service-rot-card.card-silver {
  background: #B4BCC6;
  background: linear-gradient(145deg, #c2cbd5, #a3adb8);
  color: #0A2C52;
  border: 1px solid rgba(255, 255, 255, 0.4);
}
.service-rot-card.card-silver .rot-card-title {
  color: #0A2C52;
}
.service-rot-card.card-silver .rot-card-desc {
  color: #142334;
}
.service-rot-card.card-silver .rot-card-footer {
  color: #0A2C52;
  border-top: 1px solid rgba(10, 44, 82, 0.2);
}
.service-rot-card.card-silver .rot-card-illustration {
  color: #0A2C52;
}

/* Card 2: Navy */
.service-rot-card.card-navy {
  background: #0A2C52;
  background: linear-gradient(145deg, #0A2C52, #0d3868);
  color: #FFFFFF;
  border: 1px solid rgba(255, 255, 255, 0.14);
}
.service-rot-card.card-navy .rot-card-title {
  color: #FFFFFF;
}
.service-rot-card.card-navy .rot-card-desc {
  color: #D6DADC;
}
.service-rot-card.card-navy .rot-card-footer {
  color: #9cc3f0;
  border-top: 1px solid rgba(255, 255, 255, 0.16);
}
.service-rot-card.card-navy .rot-card-illustration {
  color: #FFFFFF;
}

/* Card 3: White */
.service-rot-card.card-white {
  background: #FFFFFF;
  color: #0A2C52;
  border: 1px solid #D6DADC;
  box-shadow: 0 22px 46px rgba(10, 44, 82, 0.18);
}
.service-rot-card.card-white .rot-card-title {
  color: #0A2C52;
}
.service-rot-card.card-white .rot-card-desc {
  color: #536476;
}
.service-rot-card.card-white .rot-card-footer {
  color: #0A2C52;
  border-top: 1px solid #E4E8ED;
}
.service-rot-card.card-white .rot-card-illustration {
  color: #0A2C52;
}

/* Card 4: Dark Navy Alt */
.service-rot-card.card-navy-alt {
  background: #072240;
  background: linear-gradient(145deg, #0a2f58, #051930);
  color: #FFFFFF;
  border: 1px solid rgba(255, 255, 255, 0.14);
}
.service-rot-card.card-navy-alt .rot-card-title {
  color: #FFFFFF;
}
.service-rot-card.card-navy-alt .rot-card-desc {
  color: #D6DADC;
}
.service-rot-card.card-navy-alt .rot-card-footer {
  color: #9cc3f0;
  border-top: 1px solid rgba(255, 255, 255, 0.16);
}
.service-rot-card.card-navy-alt .rot-card-illustration {
  color: #FFFFFF;
}

/* Card Header */
.rot-card-title {
  font-family: var(--font-heading);
  font-size: 1.45rem;
  font-weight: 800;
  line-height: 1.15;
  letter-spacing: -0.02em;
}

/* Card Wireframe Illustrations */
.rot-card-illustration {
  margin: 12px 0;
  display: flex;
  align-items: center;
  justify-content: center;
  height: 96px;
}

/* Browser wireframe */
.rot-wireframe-browser {
  width: 146px;
  height: 84px;
  border-radius: 8px;
  border: 2px solid currentColor;
  padding: 6px;
  display: flex;
  flex-direction: column;
  gap: 6px;
  opacity: 0.92;
}
.wf-browser-header {
  display: flex;
  gap: 4px;
  border-bottom: 1.5px solid currentColor;
  padding-bottom: 4px;
}
.wf-dot {
  width: 5px;
  height: 5px;
  border-radius: 50%;
  background: currentColor;
}
.wf-browser-body {
  display: flex;
  gap: 6px;
  flex: 1;
}
.wf-box-main {
  width: 46px;
  height: 100%;
  border-radius: 4px;
  border: 1.5px solid currentColor;
}
.wf-lines-wrap {
  flex: 1;
  display: flex;
  flex-direction: column;
  gap: 5px;
  justify-content: center;
}
.wf-line {
  height: 3px;
  background: currentColor;
  border-radius: 2px;
}
.wf-line.short { width: 60%; }

/* Phone wireframe */
.rot-wireframe-phone {
  width: 64px;
  height: 90px;
  border-radius: 12px;
  border: 2px solid currentColor;
  padding: 4px;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 4px;
  opacity: 0.92;
}
.wf-phone-notch {
  width: 18px;
  height: 3px;
  background: currentColor;
  border-radius: 2px;
}
.wf-phone-screen {
  width: 100%;
  flex: 1;
  display: flex;
  flex-direction: column;
  gap: 4px;
}
.wf-phone-card {
  width: 100%;
  height: 30px;
  border-radius: 4px;
  border: 1.5px solid currentColor;
}
.wf-phone-grid {
  display: flex;
  gap: 4px;
  flex: 1;
}
.wf-p-block {
  flex: 1;
  border-radius: 3px;
  border: 1px solid currentColor;
}

/* AI Shield wireframe */
.rot-wireframe-ai {
  position: relative;
  width: 76px;
  height: 76px;
  display: flex;
  align-items: center;
  justify-content: center;
}
.wf-ai-shield svg {
  width: 54px;
  height: 54px;
}

/* PM chart wireframe */
.rot-wireframe-pm {
  width: 144px;
  display: flex;
  flex-direction: column;
  gap: 8px;
  opacity: 0.92;
}
.wf-pm-chart {
  display: flex;
  align-items: flex-end;
  gap: 6px;
  height: 36px;
}
.wf-pm-bar {
  flex: 1;
  background: currentColor;
  border-radius: 3px 3px 0 0;
}
.wf-pm-bar.b1 { height: 45%; }
.wf-pm-bar.b2 { height: 90%; }
.wf-pm-bar.b3 { height: 65%; }
.wf-pm-tasks {
  display: flex;
  flex-direction: column;
  gap: 3px;
}
.wf-check-item {
  font-size: 0.68rem;
  font-weight: 700;
  display: flex;
  align-items: center;
  gap: 4px;
}

/* Card Description & Footer */
.rot-card-desc {
  font-size: 0.875rem;
  line-height: 1.5;
  margin-bottom: 12px;
}

.rot-card-footer {
  font-family: var(--font-heading);
  font-size: 0.725rem;
  font-weight: 700;
  padding-top: 10px;
  letter-spacing: 0.02em;
}

/* Rotating Controls */
.rotating-controls {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 20px;
  margin-top: 36px;
  z-index: 10;
}

.rot-nav-btn {
  width: 44px;
  height: 44px;
  border-radius: 50%;
  border: 1px solid var(--border-color-medium);
  background: #FFFFFF;
  color: var(--color-primary);
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  box-shadow: var(--shadow-sm);
  transition: all var(--transition-fast);
}

.rot-nav-btn:hover {
  background: var(--color-primary);
  color: #FFFFFF;
  border-color: var(--color-primary);
  transform: scale(1.08);
}

.rot-dots-group {
  display: flex;
  align-items: center;
  gap: 8px;
}

.rot-dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: var(--border-color-medium);
  border: none;
  cursor: pointer;
  transition: all var(--transition-fast);
}

.rot-dot.active {
  width: 28px;
  border-radius: 6px;
  background: var(--color-primary);
}

@media (max-width: 991px) {
  .rotating-cards-track {
    height: 420px;
  }
  .service-rot-card {
    width: 250px;
    height: 360px;
    padding: 24px 20px;
  }
}

@media (max-width: 576px) {
  .rotating-cards-track {
    height: 400px;
  }
  .service-rot-card {
    width: 240px;
    height: 350px;
    padding: 22px 18px;
  }
}

/* ==========================================================================
   PORTFOLIO & CASE STUDIES
   ========================================================================== */
.portfolio-section {
  background-color: var(--color-white);
}

.portfolio-filter-bar {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  flex-wrap: wrap;
  margin-bottom: 48px;
}

.filter-btn {
  background-color: transparent;
  border: 1px solid var(--border-color-medium);
  border-radius: var(--radius-full);
  padding: 8px 20px;
  font-family: var(--font-heading);
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--color-text-muted);
  cursor: pointer;
  transition: all var(--transition-fast);
}

.filter-btn:hover {
  color: var(--color-primary);
  border-color: var(--color-primary);
}

.filter-btn.active {
  background-color: var(--color-primary);
  color: var(--color-white);
  border-color: var(--color-primary);
}

.projects-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 36px;
}

.project-card {
  background-color: var(--color-white);
  border: 1px solid var(--border-color-light);
  border-radius: var(--radius-lg);
  overflow: hidden;
  transition: transform var(--transition-fast), box-shadow var(--transition-fast);
  display: flex;
  flex-direction: column;
}

.project-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
}

/* Project Visual Header (Clean software UI preview strip) */
.project-header-preview {
  height: 200px;
  background-color: var(--color-bg-alt);
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  border-bottom: 1px solid var(--border-color-light);
}

.project-ui-mockup {
  width: 90%;
  height: 85%;
  background-color: var(--color-white);
  border-radius: var(--radius-md) var(--radius-md) 0 0;
  border: 1px solid var(--border-color-light);
  box-shadow: var(--shadow-sm);
  padding: 14px;
  display: flex;
  flex-direction: column;
  transition: transform var(--transition-normal);
}

.project-card:hover .project-ui-mockup {
  transform: translateY(-6px);
}

.mockup-top-bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  border-bottom: 1px solid var(--border-color-light);
  padding-bottom: 8px;
  margin-bottom: 10px;
}

.mockup-dots {
  display: flex;
  gap: 5px;
}

.mockup-dot {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background-color: var(--border-color-medium);
}

.mockup-badge {
  font-family: var(--font-mono);
  font-size: 0.625rem;
  color: var(--color-silver-dark);
}

.mockup-content-skeleton {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.skeleton-row {
  height: 10px;
  background-color: var(--color-bg-elevated);
  border-radius: 4px;
}

.skeleton-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 8px;
  margin-top: 4px;
}

.skeleton-box {
  height: 42px;
  background-color: var(--color-primary-tint);
  border-radius: 4px;
  border: 1px solid var(--color-primary-subtle);
}

.project-body {
  padding: 32px;
  display: flex;
  flex-direction: column;
  flex: 1;
}

.project-meta-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 12px;
}

.project-category {
  font-family: var(--font-heading);
  font-size: 0.75rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--color-primary);
}

.project-year {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--color-silver-dark);
}

.project-title {
  font-size: 1.5rem;
  font-weight: 800;
  color: var(--color-primary);
  margin-bottom: 10px;
}

.project-summary {
  font-size: 0.9375rem;
  color: var(--color-text-muted);
  line-height: 1.65;
  margin-bottom: 20px;
}

.project-metrics-row {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 12px;
  padding: 14px 16px;
  background-color: var(--color-bg-subtle);
  border-radius: var(--radius-md);
  margin-bottom: 20px;
}

.metric-item {
  display: flex;
  flex-direction: column;
}

.metric-value {
  font-family: var(--font-heading);
  font-size: 1.125rem;
  font-weight: 800;
  color: var(--color-primary);
  line-height: 1.2;
}

.metric-name {
  font-size: 0.6875rem;
  color: var(--color-text-muted);
  font-weight: 600;
  text-transform: uppercase;
}

.project-footer-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-top: auto;
  padding-top: 18px;
  border-top: 1px solid var(--border-color-light);
}

.project-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
}

.view-case-btn {
  background: none;
  border: none;
  font-family: var(--font-heading);
  font-size: 0.875rem;
  font-weight: 700;
  color: var(--color-primary);
  display: flex;
  align-items: center;
  gap: 6px;
  cursor: pointer;
  padding: 4px 8px;
  border-radius: var(--radius-sm);
  transition: background-color var(--transition-fast);
}

.view-case-btn:hover {
  background-color: var(--color-primary-tint);
}

/* ==========================================================================
   DELIVERY METHODOLOGY (The 4-Step Engineering Protocol)
   ========================================================================== */
.methodology-section {
  background-color: var(--color-bg-subtle);
  border-top: 1px solid var(--border-color-light);
  border-bottom: 1px solid var(--border-color-light);
}

.methodology-steps-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}

.step-card {
  background-color: var(--color-white);
  border: 1px solid var(--border-color-light);
  border-radius: var(--radius-md);
  padding: 32px 24px;
  position: relative;
  display: flex;
  flex-direction: column;
}

.step-number-tag {
  font-family: var(--font-heading);
  font-size: 1.75rem;
  font-weight: 800;
  color: var(--color-primary-subtle);
  line-height: 1;
  margin-bottom: 16px;
}

.step-card:hover .step-number-tag {
  color: var(--color-primary);
}

.step-title {
  font-size: 1.1875rem;
  font-weight: 800;
  color: var(--color-primary);
  margin-bottom: 12px;
}

.step-desc {
  font-size: 0.875rem;
  color: var(--color-text-muted);
  line-height: 1.65;
  margin-bottom: 16px;
}

.step-deliverables {
  margin-top: auto;
  padding-top: 14px;
  border-top: 1px solid var(--border-color-light);
}

.step-deliverables-title {
  font-size: 0.6875rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--color-silver-dark);
  margin-bottom: 6px;
}

.step-deliverables-text {
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--color-text-main);
}

/* ==========================================================================
   INTERACTIVE PROJECT SCOPE & ESTIMATE CALCULATOR
   ========================================================================== */
.estimator-section {
  background-color: var(--color-white);
}

.estimator-card {
  background-color: var(--color-bg-subtle);
  border: 1px solid var(--border-color-light);
  border-radius: var(--radius-lg);
  padding: 48px;
  display: grid;
  grid-template-columns: 1.2fr 0.8fr;
  gap: 48px;
  box-shadow: var(--shadow-sm);
}

.estimator-inputs {
  display: flex;
  flex-direction: column;
  gap: 28px;
}

.calc-group-title {
  font-family: var(--font-heading);
  font-size: 0.9375rem;
  font-weight: 700;
  color: var(--color-primary);
  margin-bottom: 12px;
}

.calc-pill-options {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.calc-pill-label {
  cursor: pointer;
}

.calc-pill-label input {
  display: none;
}

.calc-pill-text {
  display: inline-block;
  padding: 10px 18px;
  background-color: var(--color-white);
  border: 1px solid var(--border-color-medium);
  border-radius: var(--radius-md);
  font-family: var(--font-heading);
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--color-text-main);
  transition: all var(--transition-fast);
}

.calc-pill-label input:checked + .calc-pill-text {
  background-color: var(--color-primary);
  color: var(--color-white);
  border-color: var(--color-primary);
}

.estimator-summary-panel {
  background-color: var(--color-white);
  border: 1px solid var(--border-color-light);
  border-radius: var(--radius-md);
  padding: 32px;
  display: flex;
  flex-direction: column;
  box-shadow: var(--shadow-xs);
}

.summary-panel-title {
  font-family: var(--font-heading);
  font-size: 1.125rem;
  font-weight: 800;
  color: var(--color-primary);
  margin-bottom: 16px;
  border-bottom: 1px solid var(--border-color-light);
  padding-bottom: 12px;
}

.summary-line-item {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 12px;
  font-size: 0.875rem;
}

.summary-line-label {
  color: var(--color-text-muted);
}

.summary-line-val {
  font-weight: 700;
  color: var(--color-text-main);
}

.summary-divider {
  height: 1px;
  background-color: var(--border-color-light);
  margin: 16px 0;
}

.summary-estimate-badge {
  background-color: var(--color-primary-tint);
  border: 1px solid var(--color-primary-subtle);
  border-radius: var(--radius-md);
  padding: 16px;
  text-align: center;
  margin-bottom: 24px;
}

.est-timeline-val {
  font-family: var(--font-heading);
  font-size: 1.375rem;
  font-weight: 800;
  color: var(--color-primary);
  margin-bottom: 2px;
}

.est-timeline-sub {
  font-size: 0.75rem;
  color: var(--color-text-muted);
}

/* ==========================================================================
   MODERN CONTACT US SECTION (Exact Reference Design Matching Theme)
   ========================================================================== */
/* ==========================================================================
   MODERN CONTACT US SECTION (Theme Aligned, Crisp White & Brand Navy)
   ========================================================================== */
.modern-contact-section {
  background: var(--color-white);
  border-top: 1px solid var(--border-color-light);
  padding: 96px 0;
}

.modern-contact-container {
  display: grid;
  grid-template-columns: 1.15fr 0.9fr;
  gap: 36px;
  align-items: stretch;
}

/* Left Box: White Contact Form Card */
.contact-card-main {
  background: var(--color-white);
  border: 1px solid var(--border-color-light);
  border-radius: 28px;
  padding: 44px 38px;
  box-shadow: 0 14px 40px rgba(10, 44, 82, 0.06);
  display: flex;
  flex-direction: column;
}

.contact-badge-pill {
  color: #ea580c;
  font-family: var(--font-heading);
  font-size: 0.85rem;
  font-weight: 700;
  letter-spacing: 0.01em;
  margin-bottom: 12px;
}

.contact-main-heading {
  font-family: var(--font-heading);
  font-size: 2.15rem;
  font-weight: 800;
  color: var(--color-primary);
  line-height: 1.18;
  letter-spacing: -0.02em;
  margin-bottom: 14px;
}

.contact-main-sub {
  font-size: 0.925rem;
  color: var(--color-text-muted);
  line-height: 1.55;
  margin-bottom: 26px;
}

.contact-row-two {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
}

.contact-input-group {
  display: flex;
  flex-direction: column;
  gap: 8px;
  margin-bottom: 18px;
}

.contact-input-group label {
  font-family: var(--font-heading);
  font-size: 0.825rem;
  font-weight: 700;
  color: var(--color-text-main);
}

.contact-input-group input,
.contact-input-group textarea {
  width: 100%;
  background: var(--color-bg-subtle);
  border: 1px solid var(--border-color-medium);
  border-radius: var(--radius-md);
  padding: 13px 16px;
  font-family: var(--font-body);
  font-size: 0.925rem;
  color: var(--color-text-main);
  transition: border-color 0.2s ease, background 0.2s ease, box-shadow 0.2s ease;
}

.contact-input-group input::placeholder,
.contact-input-group textarea::placeholder {
  color: var(--color-text-light);
}

.contact-input-group input:focus,
.contact-input-group textarea:focus {
  background: var(--color-white);
  border-color: var(--color-primary);
  outline: none;
  box-shadow: 0 0 0 3px rgba(10, 44, 82, 0.12);
}

.contact-input-group textarea {
  resize: vertical;
  min-height: 110px;
}

.contact-checkbox-row {
  margin: 6px 0 22px 0;
}

.custom-checkbox-label {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-size: 0.845rem;
  color: var(--color-text-muted);
  cursor: pointer;
  user-select: none;
}

.custom-checkbox-label input[type="checkbox"] {
  width: 17px;
  height: 17px;
  accent-color: var(--color-primary);
  cursor: pointer;
}

.privacy-link {
  color: var(--color-primary);
  text-decoration: underline;
  font-weight: 600;
}

.contact-btn-submit {
  width: 100%;
  background: var(--color-primary);
  color: var(--color-white);
  font-family: var(--font-heading);
  font-size: 1rem;
  font-weight: 700;
  padding: 15px 24px;
  border-radius: var(--radius-md);
  border: 1px solid var(--color-primary);
  cursor: pointer;
  transition: transform 0.2s ease, background 0.2s ease, box-shadow 0.2s ease;
  box-shadow: 0 6px 18px rgba(10, 44, 82, 0.2);
}

.contact-btn-submit:hover {
  background: var(--color-primary-hover);
  border-color: var(--color-primary-hover);
  transform: translateY(-2px);
  box-shadow: 0 10px 24px rgba(10, 44, 82, 0.28);
}

.contact-btn-submit:active {
  background: var(--color-primary-active);
  transform: translateY(0);
}

/* Right Column: Cards */
.contact-side-col {
  display: flex;
  flex-direction: column;
  gap: 20px;
}

/* Top Card: Concentric Radar Aura with Large M4 Vision Logo */
.contact-logo-card {
  background: #F4F7FB;
  background: linear-gradient(145deg, #F8FAFC 0%, #EEF4FA 100%);
  border: 1px solid var(--border-color-light);
  border-radius: 28px;
  position: relative;
  min-height: 290px;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  box-shadow: 0 14px 40px rgba(10, 44, 82, 0.06);
}

.contact-team-svg {
  width: 100%;
  height: 100%;
  max-height: 320px;
  object-fit: cover;
  display: block;
  border-radius: 28px;
  transition: transform 0.4s cubic-bezier(0.16, 1, 0.3, 1);
}

.contact-logo-card:hover .contact-team-svg {
  transform: scale(1.025);
}

.radar-concentric-bg {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  pointer-events: none;
}

.radar-circle {
  position: absolute;
  border-radius: 50%;
  border: 1.5px solid rgba(10, 44, 82, 0.1);
}

.radar-circle.c1 { width: 150px; height: 150px; }
.radar-circle.c2 { width: 240px; height: 240px; }
.radar-circle.c3 { width: 330px; height: 330px; }
.radar-circle.c4 { width: 430px; height: 430px; border-style: dashed; opacity: 0.4; }

.contact-brand-center {
  position: relative;
  z-index: 2;
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  padding: 24px;
}

.contact-center-logo {
  max-height: 140px;
  max-width: 230px;
  width: auto;
  filter: drop-shadow(0 12px 28px rgba(10, 44, 82, 0.18));
  transition: transform 0.3s ease;
  margin-bottom: 12px;
}

.contact-logo-card:hover .contact-center-logo {
  transform: scale(1.06);
}

.contact-brand-title {
  font-family: var(--font-heading);
  font-size: 1.45rem;
  font-weight: 800;
  color: var(--color-primary);
  letter-spacing: 0.03em;
}

.contact-brand-tag {
  font-size: 0.72rem;
  font-weight: 700;
  color: var(--color-silver-dark);
  letter-spacing: 0.15em;
  text-transform: uppercase;
}

/* Bottom Card: Contact Details List */
.contact-details-card {
  background: var(--color-white);
  border: 1px solid var(--border-color-light);
  border-radius: 28px;
  padding: 24px 26px;
  display: flex;
  flex-direction: column;
  gap: 12px;
  box-shadow: 0 14px 40px rgba(10, 44, 82, 0.06);
}

.contact-info-entry {
  display: flex;
  align-items: center;
  gap: 16px;
  padding: 12px 16px;
  background: var(--color-bg-subtle);
  border: 1px solid #EBF1F7;
  border-radius: 18px;
  transition: background 0.2s ease, transform 0.2s ease, border-color 0.2s ease;
}

.contact-info-entry:hover {
  background: var(--color-primary-tint);
  border-color: var(--color-primary-subtle);
  transform: translateX(4px);
}

.info-icon-circle {
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background: var(--color-primary-subtle);
  color: var(--color-primary);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.info-entry-text {
  display: flex;
  flex-direction: column;
}

.info-entry-title {
  font-family: var(--font-heading);
  font-size: 0.95rem;
  font-weight: 800;
  color: var(--color-primary);
  line-height: 1.2;
}

.info-entry-val {
  font-size: 0.86rem;
  color: var(--color-text-muted);
  font-weight: 500;
  text-decoration: none;
  transition: color 0.2s ease;
}

.info-entry-val:hover {
  color: var(--color-primary);
}

.form-alert {
  padding: 12px 16px;
  border-radius: 12px;
  font-size: 0.875rem;
  margin-bottom: 20px;
  display: none;
}

.form-alert.success {
  display: block;
  background-color: #EBF8F2;
  color: #0E6245;
  border: 1px solid #B8E7D3;
}

.form-alert.error {
  display: block;
  background-color: #FEF2F2;
  color: #991B1B;
  border: 1px solid #FECACA;
}

@media (max-width: 900px) {
  .modern-contact-container {
    grid-template-columns: 1fr;
  }
  .contact-card-main {
    padding: 32px 24px;
  }
}

@media (max-width: 550px) {
  .contact-row-two {
    grid-template-columns: 1fr;
  }
  .contact-main-heading {
    font-size: 1.75rem;
  }
}

/* ==========================================================================
   CASE STUDY MODAL
   ========================================================================== */
.modal-backdrop {
  position: fixed;
  inset: 0;
  background-color: rgba(10, 44, 82, 0.45);
  backdrop-filter: blur(4px);
  z-index: 2000;
  display: none;
  align-items: center;
  justify-content: center;
  padding: 24px;
}

.modal-backdrop.open {
  display: flex;
}

.modal-container {
  background-color: var(--color-white);
  border-radius: var(--radius-lg);
  max-width: 800px;
  width: 100%;
  max-height: 90vh;
  overflow-y: auto;
  border: 1px solid var(--border-color-light);
  box-shadow: var(--shadow-lg);
  position: relative;
  padding: 40px;
}

.modal-close-btn {
  position: absolute;
  top: 24px;
  right: 24px;
  background: var(--color-bg-subtle);
  border: 1px solid var(--border-color-light);
  border-radius: var(--radius-sm);
  width: 36px;
  height: 36px;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  color: var(--color-primary);
}

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

/* ==========================================================================
   FOOTER (Professional, Grounded, High Contrast)
   ========================================================================== */
.site-footer {
  background-color: #071E38;
  color: #D2DCE6;
  padding-top: 72px;
  padding-bottom: 36px;
  border-top: 1px solid #14355E;
}

.footer-top-grid {
  display: grid;
  grid-template-columns: 1.5fr 1fr 1fr 1fr;
  gap: 48px;
  margin-bottom: 56px;
}

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

.footer-logo-row {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 16px;
}

.footer-logo-img {
  height: 40px;
  width: auto;
  filter: brightness(0) invert(1);
}

.footer-brand-name {
  font-family: var(--font-heading);
  font-size: 1.25rem;
  font-weight: 800;
  color: var(--color-white);
}

.footer-desc {
  font-size: 0.875rem;
  color: #9EB0C4;
  line-height: 1.65;
  margin-bottom: 24px;
  max-width: 320px;
}

.system-status-indicator {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 12px;
  background-color: rgba(255, 255, 255, 0.06);
  border: 1px solid rgba(255, 255, 255, 0.12);
  border-radius: var(--radius-full);
  font-size: 0.75rem;
  font-weight: 600;
  color: #A9D18E;
}

.status-dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background-color: #52C41A;
}

.footer-col-title {
  font-family: var(--font-heading);
  font-size: 0.875rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--color-white);
  margin-bottom: 20px;
}

.footer-links-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.footer-links-list a {
  color: #9EB0C4;
  font-size: 0.875rem;
  transition: color var(--transition-fast);
}

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

.footer-bottom-bar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-top: 32px;
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  font-size: 0.8125rem;
  color: #7B8E9F;
}

/* ==========================================================================
   RESPONSIVE DESIGN BREAKPOINTS
   ========================================================================== */
@media (max-width: 1080px) {
  .hero-grid {
    grid-template-columns: 1fr;
    gap: 48px;
  }
  
  .about-intro-grid {
    grid-template-columns: 1fr;
    gap: 36px;
  }

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

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

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

  .estimator-card {
    grid-template-columns: 1fr;
  }

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

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

@media (max-width: 768px) {
  :root {
    --header-height: 70px;
  }

  .section {
    padding-top: 64px;
    padding-bottom: 64px;
  }

  .nav-links,
  .nav-cta-wrap .btn {
    display: none;
  }

  .mobile-menu-toggle {
    display: block;
  }

  .hero-title {
    font-size: 2.5rem;
  }

  .services-layout-grid,
  .projects-grid,
  .testimonials-grid {
    grid-template-columns: 1fr;
  }

  .four-minds-grid {
    grid-template-columns: 1fr;
  }

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

  .canvas-container {
    height: 340px;
  }

  .footer-top-grid {
    grid-template-columns: 1fr;
    gap: 36px;
  }

  .footer-bottom-bar {
    flex-direction: column;
    gap: 12px;
    text-align: center;
  }
}