/* 
 * ScrollAR4U Technologies Private Limited
 * Enterprise White Theme System (High-Ticket Lead Conversion Engine)
 */

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

:root {
  --font-heading: 'Plus Jakarta Sans', -apple-system, sans-serif;
  --font-body: 'Inter', -apple-system, sans-serif;
  --font-mono: 'JetBrains Mono', monospace;

  /* Enterprise Light Color System */
  --bg-main: #FFFFFF;
  --bg-subtle: #F8FAFC;
  --bg-card: #FFFFFF;
  --bg-input: #FFFFFF;

  --text-main: #0F172A;
  --text-muted: #475569;
  --text-subtle: #64748B;

  --border-color: #E2E8F0;
  --border-focus: #0066FF;
  
  --primary: #0066FF;
  --primary-hover: #0052CC;
  --primary-light: #EFF6FF;

  --navy-dark: #0A2540;
  --navy-border: #1E3E62;

  --success-bg: #F0FDF4;
  --success-text: #15803D;

  --defense-bg: #ECFDF5;
  --defense-text: #047857;

  --enterprise-bg: #F0F9FF;
  --enterprise-text: #0369A1;

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

  --shadow-sm: 0 1px 3px rgba(15, 23, 42, 0.05);
  --shadow-md: 0 4px 12px rgba(15, 23, 42, 0.06), 0 1px 3px rgba(15, 23, 42, 0.03);
  --shadow-lg: 0 12px 32px rgba(15, 23, 42, 0.08), 0 2px 6px rgba(15, 23, 42, 0.04);
  --shadow-xl: 0 24px 48px rgba(15, 23, 42, 0.12);

  --transition: all 0.2s cubic-bezier(0.16, 1, 0.3, 1);
}

*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
  font-size: 16px;
}

body {
  font-family: var(--font-body);
  background-color: var(--bg-subtle);
  color: var(--text-main);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

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

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

/* Utility Containers */
.container {
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 24px;
}

.section-padding {
  padding: 96px 0;
}

/* Section Header styling */
.section-header {
  text-align: center;
  max-width: 760px;
  margin: 0 auto 56px auto;
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 14px;
  border-radius: var(--radius-full);
  background: var(--primary-light);
  color: var(--primary);
  font-size: 0.8125rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  margin-bottom: 16px;
  border: 1px solid rgba(0, 102, 255, 0.2);
}

.section-title {
  font-size: 2.375rem;
  line-height: 1.25;
  margin-bottom: 16px;
}

.section-desc {
  font-size: 1.0625rem;
  color: var(--text-muted);
}

/* Button System */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  padding: 14px 28px;
  font-family: var(--font-heading);
  font-weight: 600;
  font-size: 0.9375rem;
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: var(--transition);
  border: 1px solid transparent;
  white-space: nowrap;
}

.btn-primary {
  background-color: var(--primary);
  color: #FFFFFF;
  box-shadow: 0 4px 14px rgba(0, 102, 255, 0.35);
}

.btn-primary:hover {
  background-color: var(--primary-hover);
  transform: translateY(-1px);
  box-shadow: 0 6px 20px rgba(0, 102, 255, 0.45);
}

.btn-secondary {
  background-color: var(--bg-main);
  color: var(--text-main);
  border-color: var(--border-color);
  box-shadow: var(--shadow-sm);
}

.btn-secondary:hover {
  background-color: var(--bg-subtle);
  border-color: #CBD5E1;
  color: var(--primary);
}

.btn-outline-navy {
  background: transparent;
  color: #FFFFFF;
  border: 1px solid rgba(255, 255, 255, 0.25);
}

.btn-outline-navy:hover {
  background: rgba(255, 255, 255, 0.1);
  border-color: #FFFFFF;
}

.btn-sm {
  padding: 8px 16px;
  font-size: 0.8125rem;
}

/* Header & Nav */
.site-header {
  position: sticky;
  top: 0;
  z-index: 1000;
  background: rgba(255, 255, 255, 0.92);
  backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--border-color);
}

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

.brand-logo-link {
  display: inline-flex;
  align-items: center;
  text-decoration: none;
}

.brand-logo-img {
  height: 48px;
  width: auto;
  object-fit: contain;
  display: block;
  transition: transform 0.2s ease;
}

.brand-logo-link:hover .brand-logo-img {
  transform: scale(1.03);
}

.footer-logo-img {
  height: 52px;
  margin-bottom: 8px;
}

.logo-mark {
  width: 42px;
  height: 42px;
  background: var(--navy-dark);
  color: #FFFFFF;
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-heading);
  font-weight: 800;
  font-size: 1.25rem;
  border: 2px solid var(--primary);
}

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

.logo-name {
  font-family: var(--font-heading);
  font-weight: 800;
  font-size: 1.125rem;
  color: var(--text-main);
  line-height: 1.1;
}

.logo-sub {
  font-size: 0.75rem;
  color: var(--text-subtle);
  font-weight: 600;
  letter-spacing: 0.04em;
}

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

.nav-link {
  font-family: var(--font-heading);
  font-size: 0.9375rem;
  font-weight: 600;
  color: var(--text-muted);
  transition: var(--transition);
}

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

.header-actions {
  display: flex;
  align-items: center;
  gap: 16px;
}

/* Hero Section */
.hero {
  background: #FFFFFF;
  border-bottom: 1px solid var(--border-color);
  padding: 80px 0 96px 0;
  position: relative;
  overflow: hidden;
}

.hero-grid {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 56px;
  align-items: center;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 6px 16px;
  background: var(--bg-subtle);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-full);
  font-size: 0.8125rem;
  font-weight: 600;
  color: var(--text-main);
  margin-bottom: 24px;
}

.status-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: #10B981;
  box-shadow: 0 0 0 3px rgba(16, 185, 129, 0.2);
}

.hero-headline {
  font-size: 3.25rem;
  line-height: 1.15;
  color: var(--text-main);
  margin-bottom: 24px;
}

.hero-headline span {
  color: var(--primary);
}

.hero-subhead {
  font-size: 1.1875rem;
  color: var(--text-muted);
  line-height: 1.6;
  margin-bottom: 36px;
}

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

.trust-strip {
  display: flex;
  align-items: center;
  gap: 32px;
  padding-top: 32px;
  border-top: 1px solid var(--border-color);
}

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

.trust-num {
  font-family: var(--font-heading);
  font-size: 1.5rem;
  font-weight: 800;
  color: var(--navy-dark);
}

.trust-label {
  font-size: 0.78125rem;
  color: var(--text-subtle);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

/* Hero Visual Showcase Frame */
.hero-visual {
  position: relative;
}

.hero-card-stack {
  background: var(--bg-main);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-xl);
  overflow: hidden;
}

.hero-card-header {
  background: var(--bg-subtle);
  padding: 16px 20px;
  border-bottom: 1px solid var(--border-color);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.window-dots {
  display: flex;
  gap: 6px;
}

.window-dots span {
  width: 10px;
  height: 10px;
  border-radius: 50%;
}

.dot-red { background: #EF4444; }
.dot-yellow { background: #F59E0B; }
.dot-green { background: #10B981; }

.hero-card-title {
  font-size: 0.8125rem;
  font-weight: 700;
  color: var(--text-subtle);
  font-family: var(--font-mono);
}

.hero-card-body {
  padding: 24px;
}

.flagship-preview-img {
  width: 100%;
  height: auto;
  border-radius: var(--radius-md);
  border: 1px solid var(--border-color);
  box-shadow: var(--shadow-sm);
  display: block;
}

/* Flagship Case Studies Section */
.flagship-section {
  background: var(--navy-dark);
  color: #FFFFFF;
  padding: 96px 0;
}

.flagship-section .section-title {
  color: #FFFFFF;
}

.flagship-section .section-desc {
  color: #94A3B8;
}

.flagship-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 32px;
}

.flagship-card {
  background: #0F2D4E;
  border: 1px solid var(--navy-border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  display: flex;
  flex-direction: column;
  transition: var(--transition);
  cursor: pointer;
}

.flagship-card:hover {
  transform: translateY(-4px);
  border-color: var(--primary);
  box-shadow: 0 16px 36px rgba(0, 102, 255, 0.2);
}

.flagship-media {
  position: relative;
  background: #081C30;
  padding: 16px;
  border-bottom: 1px solid var(--navy-border);
  overflow: hidden;
}

.flagship-img {
  width: 100%;
  height: 240px;
  object-fit: cover;
  object-position: top;
  border-radius: var(--radius-md);
  transition: transform 0.4s ease;
}

.flagship-card:hover .flagship-img {
  transform: scale(1.03);
}

.flagship-content {
  padding: 28px;
  display: flex;
  flex-direction: column;
  flex-grow: 1;
}

.flagship-badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 4px 12px;
  border-radius: var(--radius-full);
  font-size: 0.75rem;
  font-weight: 700;
  text-transform: uppercase;
  margin-bottom: 14px;
  width: fit-content;
}

.badge-defense {
  background: rgba(16, 185, 129, 0.15);
  color: #34D399;
  border: 1px solid rgba(52, 211, 153, 0.3);
}

.badge-enterprise {
  background: rgba(56, 189, 248, 0.15);
  color: #38BDF8;
  border: 1px solid rgba(56, 189, 248, 0.3);
}

.flagship-title {
  font-size: 1.5rem;
  color: #FFFFFF;
  margin-bottom: 12px;
}

.flagship-desc {
  font-size: 0.9375rem;
  color: #CBD5E1;
  margin-bottom: 20px;
  line-height: 1.6;
}

.flagship-meta {
  margin-top: auto;
  padding-top: 16px;
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.metric-highlight {
  font-size: 0.875rem;
  font-weight: 700;
  color: #38BDF8;
}

/* All Projects Portfolio Section */
.portfolio-controls {
  display: flex;
  flex-direction: column;
  gap: 24px;
  margin-bottom: 40px;
}

.filter-bar {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-wrap: wrap;
}

.filter-btn {
  padding: 10px 20px;
  border-radius: var(--radius-full);
  border: 1px solid var(--border-color);
  background: var(--bg-main);
  color: var(--text-muted);
  font-family: var(--font-heading);
  font-size: 0.875rem;
  font-weight: 600;
  cursor: pointer;
  transition: var(--transition);
}

.filter-btn:hover {
  border-color: #CBD5E1;
  color: var(--text-main);
}

.filter-btn.active {
  background: var(--navy-dark);
  color: #FFFFFF;
  border-color: var(--navy-dark);
  box-shadow: var(--shadow-sm);
}

.search-view-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
}

.search-box {
  position: relative;
  flex: 1;
  max-width: 480px;
}

.search-input {
  width: 100%;
  padding: 12px 16px 12px 44px;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  background: var(--bg-main);
  font-family: var(--font-body);
  font-size: 0.9375rem;
  color: var(--text-main);
  transition: var(--transition);
}

.search-input:focus {
  outline: none;
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(0, 102, 255, 0.15);
}

.search-icon {
  position: absolute;
  left: 14px;
  top: 50%;
  transform: translateY(-50%);
  color: var(--text-subtle);
}

.results-count {
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--text-subtle);
}

/* Projects Grid Layout */
.projects-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 32px;
}

.project-card {
  background: var(--bg-main);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  overflow: hidden;
  display: flex;
  flex-direction: column;
  transition: var(--transition);
  box-shadow: var(--shadow-sm);
  cursor: pointer;
}

.project-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
  border-color: #CBD5E1;
}

.project-thumb-wrap {
  position: relative;
  width: 100%;
  height: 220px;
  background: var(--bg-subtle);
  border-bottom: 1px solid var(--border-color);
  overflow: hidden;
}

.project-thumb {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: top;
  transition: transform 0.4s ease;
}

.project-card:hover .project-thumb {
  transform: scale(1.03);
}

.status-tag {
  position: absolute;
  top: 14px;
  right: 14px;
  padding: 4px 10px;
  border-radius: var(--radius-full);
  font-size: 0.75rem;
  font-weight: 700;
  background: rgba(15, 23, 42, 0.85);
  color: #FFFFFF;
  backdrop-filter: blur(4px);
  box-shadow: 0 2px 6px rgba(0, 0, 0, 0.15);
}

.status-live { background: #059669; }
.status-enterprise { background: #2563EB; }
.status-defense { background: #047857; }

.project-card-body {
  padding: 24px;
  display: flex;
  flex-direction: column;
  flex-grow: 1;
}

.category-label {
  font-size: 0.75rem;
  font-weight: 700;
  text-transform: uppercase;
  color: var(--primary);
  letter-spacing: 0.06em;
  margin-bottom: 8px;
}

.project-card-title {
  font-size: 1.25rem;
  margin-bottom: 8px;
  color: var(--text-main);
  line-height: 1.3;
}

.project-card-desc {
  font-size: 0.875rem;
  color: var(--text-muted);
  margin-bottom: 20px;
  line-height: 1.5;
}

.tech-tag-list {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  margin-bottom: 20px;
  margin-top: auto;
}

.tech-tag {
  padding: 3px 9px;
  background: var(--bg-subtle);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-sm);
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--text-subtle);
  font-weight: 500;
}

.project-card-footer {
  padding-top: 16px;
  border-top: 1px solid var(--border-color);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.btn-details {
  background: none;
  border: none;
  color: var(--primary);
  font-family: var(--font-heading);
  font-weight: 700;
  font-size: 0.875rem;
  cursor: pointer;
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 0;
}

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

.external-link {
  color: var(--text-subtle);
  display: flex;
  align-items: center;
}

.external-link:hover {
  color: var(--primary);
}

/* Services & Capabilities */
.capabilities-section {
  background: #FFFFFF;
  border-top: 1px solid var(--border-color);
  border-bottom: 1px solid var(--border-color);
}

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

.capability-card {
  padding: 32px 24px;
  background: var(--bg-subtle);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  transition: var(--transition);
}

.capability-card:hover {
  background: #FFFFFF;
  transform: translateY(-4px);
  border-color: var(--primary);
  box-shadow: var(--shadow-md);
}

.cap-icon {
  width: 52px;
  height: 52px;
  background: var(--primary-light);
  color: var(--primary);
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.35rem;
  margin-bottom: 20px;
  transition: var(--transition);
}

.capability-card:hover .cap-icon {
  transform: scale(1.08);
}

.cap-icon-mobile {
  background: rgba(59, 130, 246, 0.12);
  color: #2563EB;
}

.cap-icon-erp {
  background: rgba(147, 51, 234, 0.12);
  color: #7C3AED;
}

.cap-icon-defense {
  background: rgba(14, 165, 233, 0.12);
  color: #0284C7;
}

.cap-icon-ai {
  background: rgba(236, 72, 153, 0.12);
  color: #DB2777;
}

.footer-icon {
  margin-right: 8px;
  color: #38BDF8;
  width: 16px;
  display: inline-block;
  text-align: center;
}

.cap-title {
  font-size: 1.125rem;
  margin-bottom: 12px;
}

.cap-desc {
  font-size: 0.875rem;
  color: var(--text-muted);
  line-height: 1.6;
}

/* Interactive RFP Estimator Section */
.rfp-section {
  background: var(--bg-subtle);
  padding: 96px 0;
}

.rfp-container {
  background: var(--bg-main);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-xl);
  display: grid;
  grid-template-columns: 0.9fr 1.1fr;
  overflow: hidden;
}

.rfp-sidebar {
  background: var(--navy-dark);
  color: #FFFFFF;
  padding: 48px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
}

.rfp-sidebar-title {
  color: #FFFFFF;
  font-size: 2rem;
  margin-bottom: 16px;
}

.rfp-sidebar-desc {
  color: #94A3B8;
  font-size: 1rem;
  margin-bottom: 36px;
}

.sla-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.sla-item {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  font-size: 0.9375rem;
  color: #E2E8F0;
}

.sla-icon {
  color: #38BDF8;
  flex-shrink: 0;
}

.rfp-form-body {
  padding: 48px;
}

.form-group {
  margin-bottom: 24px;
}

.form-label {
  display: block;
  font-family: var(--font-heading);
  font-size: 0.875rem;
  font-weight: 700;
  color: var(--text-main);
  margin-bottom: 8px;
}

.form-control {
  width: 100%;
  padding: 12px 16px;
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  font-family: var(--font-body);
  font-size: 0.9375rem;
  color: var(--text-main);
  background: var(--bg-main);
  transition: var(--transition);
}

.form-control:focus {
  outline: none;
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(0, 102, 255, 0.15);
}

.form-grid-2 {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 20px;
}

.checkbox-label {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 0.875rem;
  color: var(--text-muted);
  cursor: pointer;
}

/* Modal Drawer */
.modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(15, 23, 42, 0.6);
  backdrop-filter: blur(8px);
  z-index: 2000;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 24px;
  opacity: 0;
  visibility: hidden;
  transition: var(--transition);
}

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

.modal-card {
  background: var(--bg-main);
  border-radius: var(--radius-lg);
  max-width: 840px;
  width: 100%;
  max-height: 90vh;
  overflow-y: auto;
  box-shadow: var(--shadow-xl);
  position: relative;
  transform: translateY(20px);
  transition: var(--transition);
}

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

.modal-header {
  padding: 24px 32px;
  border-bottom: 1px solid var(--border-color);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.modal-close-btn {
  background: var(--bg-subtle);
  border: 1px solid var(--border-color);
  width: 36px;
  height: 36px;
  border-radius: 50%;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-muted);
  transition: var(--transition);
}

.modal-close-btn:hover {
  background: #E2E8F0;
  color: var(--text-main);
}

.modal-body {
  padding: 32px;
}

.modal-img-preview {
  width: 100%;
  border-radius: var(--radius-md);
  border: 1px solid var(--border-color);
  margin-bottom: 28px;
}

.modal-block {
  margin-bottom: 24px;
}

.modal-block-title {
  font-size: 1rem;
  font-weight: 700;
  margin-bottom: 8px;
  color: var(--navy-dark);
}

/* Footer */
.site-footer {
  background: var(--navy-dark);
  color: #94A3B8;
  padding: 64px 0 32px 0;
  border-top: 1px solid var(--navy-border);
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.5fr repeat(3, 1fr);
  gap: 48px;
  margin-bottom: 48px;
}

.footer-brand .logo-name {
  color: #FFFFFF;
}

.footer-brand .logo-sub {
  color: #94A3B8;
}

.footer-desc {
  margin-top: 16px;
  font-size: 0.875rem;
  line-height: 1.6;
}

.footer-title {
  color: #FFFFFF;
  font-size: 0.9375rem;
  margin-bottom: 20px;
}

.footer-links {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.footer-link {
  color: #94A3B8;
  font-size: 0.875rem;
}

.footer-link:hover {
  color: #FFFFFF;
}

.footer-bottom {
  padding-top: 32px;
  border-top: 1px solid var(--navy-border);
  display: flex;
  align-items: center;
  justify-content: space-between;
  font-size: 0.8125rem;
}

/* Mobile Navigation Toggle & Dropdown */
.mobile-nav-toggle {
  display: none;
  background: var(--bg-subtle);
  border: 1px solid var(--border-color);
  width: 38px;
  height: 38px;
  border-radius: var(--radius-md);
  color: var(--text-main);
  font-size: 1.125rem;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: var(--transition);
}

.mobile-nav-toggle:hover {
  background: var(--primary-light);
  color: var(--primary);
}

.mobile-nav-dropdown {
  display: none;
  background: #FFFFFF;
  border-top: 1px solid var(--border-color);
  border-bottom: 1px solid var(--border-color);
  padding: 16px 20px;
  box-shadow: var(--shadow-md);
}

.mobile-nav-dropdown.active {
  display: block;
}

.mobile-nav-menu {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.mobile-nav-link {
  font-family: var(--font-heading);
  font-weight: 600;
  font-size: 0.9375rem;
  color: var(--text-main);
  display: block;
  padding: 8px 0;
  border-bottom: 1px dashed var(--border-color);
}

.mobile-nav-menu li:last-child .mobile-nav-link {
  border-bottom: none;
}

/* Responsive Breakpoints & Mobile Optimization */
@media (max-width: 1024px) {
  .hero-grid { grid-template-columns: 1fr; gap: 40px; }
  .projects-grid { grid-template-columns: repeat(2, 1fr); gap: 24px; }
  .capabilities-grid { grid-template-columns: repeat(2, 1fr); gap: 20px; }
  .rfp-container { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: repeat(2, 1fr); gap: 32px; }
  .flagship-grid { grid-template-columns: 1fr; gap: 24px; }
}

@media (max-width: 768px) {
  .container {
    padding: 0 16px;
  }
  
  .section-padding {
    padding: 56px 0;
  }
  
  /* Header Mobile Layout */
  .header-container {
    height: 64px;
  }

  .brand-logo-img {
    height: 36px;
  }

  .desktop-nav, .nav-menu {
    display: none;
  }

  .mobile-nav-toggle {
    display: flex;
  }

  .header-actions .btn-sm {
    padding: 6px 12px;
    font-size: 0.75rem;
  }

  /* Hero Section Mobile */
  .hero {
    padding: 36px 0 48px 0;
  }

  .hero-badge {
    font-size: 0.6875rem;
    padding: 4px 12px;
    margin-bottom: 16px;
    white-space: normal;
    text-align: left;
    max-width: 100%;
  }

  .hero-headline {
    font-size: clamp(1.75rem, 7vw, 2.375rem);
    line-height: 1.2;
    margin-bottom: 16px;
    word-break: break-word;
  }

  .hero-subhead {
    font-size: 0.9375rem;
    line-height: 1.5;
    margin-bottom: 24px;
  }

  .hero-actions {
    flex-direction: column;
    width: 100%;
    gap: 12px;
    margin-bottom: 32px;
  }

  .hero-actions .btn {
    width: 100%;
    justify-content: center;
    padding: 12px 20px;
    font-size: 0.875rem;
  }

  .trust-strip {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 16px;
    padding-top: 24px;
  }

  .trust-num {
    font-size: 1.25rem;
  }

  .trust-label {
    font-size: 0.6875rem;
  }

  .hero-card-header {
    padding: 12px 14px;
    flex-wrap: wrap;
    gap: 8px;
  }

  .hero-card-title {
    font-size: 0.725rem;
  }

  /* Flagship & Section Headers */
  .section-header {
    margin-bottom: 36px;
  }

  .section-title {
    font-size: 1.625rem;
  }

  .section-desc {
    font-size: 0.9375rem;
  }

  .flagship-content {
    padding: 20px;
  }

  .flagship-title {
    font-size: 1.25rem;
  }

  .flagship-img {
    height: 180px;
  }

  .flagship-meta {
    flex-direction: column;
    align-items: flex-start;
    gap: 12px;
  }

  /* Portfolio Filter Scrollbar */
  .portfolio-controls {
    margin-bottom: 24px;
  }

  .filter-bar {
    display: flex;
    overflow-x: auto;
    white-space: nowrap;
    padding-bottom: 8px;
    margin-bottom: 16px;
    -webkit-overflow-scrolling: touch;
    scrollbar-width: none;
  }

  .filter-bar::-webkit-scrollbar {
    display: none;
  }

  .filter-btn {
    flex-shrink: 0;
    padding: 8px 14px;
    font-size: 0.8125rem;
  }

  .search-view-row {
    flex-direction: column;
    align-items: stretch;
    gap: 12px;
  }

  .search-box {
    width: 100%;
  }

  .search-input {
    width: 100%;
    font-size: 0.875rem;
    padding: 10px 14px 10px 40px;
  }

  .projects-grid {
    grid-template-columns: 1fr;
    gap: 20px;
  }

  .project-thumb-wrap {
    height: 180px;
  }

  .project-card-body {
    padding: 18px;
  }

  /* Capabilities Cards */
  .capabilities-grid {
    grid-template-columns: 1fr;
    gap: 16px;
  }

  .capability-card {
    padding: 20px;
  }

  /* RFP Business Inquiry Form Mobile */
  .rfp-sidebar {
    padding: 28px 20px;
  }

  .rfp-sidebar-title {
    font-size: 1.5rem;
  }

  .rfp-form-body {
    padding: 24px 18px;
  }

  .form-grid-2 {
    grid-template-columns: 1fr;
    gap: 16px;
  }

  .form-control {
    font-size: 16px; /* Prevents auto-zoom on mobile browsers */
    padding: 10px 14px;
  }

  /* Modal Drawer Mobile */
  .modal-overlay {
    padding: 12px;
  }

  .modal-card {
    max-height: 92vh;
    border-radius: var(--radius-md);
  }

  .modal-header {
    padding: 16px 20px;
  }

  .modal-body {
    padding: 20px;
  }

  /* Footer Mobile */
  .site-footer {
    padding: 48px 0 24px 0;
  }

  .footer-grid {
    grid-template-columns: 1fr;
    gap: 32px;
  }

  .footer-bottom {
    flex-direction: column;
    gap: 10px;
    text-align: center;
  }
}

@media (max-width: 480px) {
  .trust-strip {
    grid-template-columns: 1fr;
    gap: 12px;
  }

  .brand-logo-img {
    height: 30px;
  }

  .hero-headline {
    font-size: 1.75rem;
  }
}