/* ==========================================================================
   Visionwaves Solution - Pure Vanilla CSS Design System
   Enterprise XR & Simulation Technology (Zero Frameworks, Zero JS Dependencies)
   ========================================================================== */

/* --- Custom Properties & Theme Variables --- */
:root {
  --color-primary: #0B1230;
  --color-primary-light: #1E3A8A;
  --color-accent: #00F0FF;
  --color-accent-secondary: #9D4EDD;
  --color-accent-blue: #3B82F6;
  --color-accent-green: #10B981;
  --color-accent-orange: #F59E0B;
  --color-background-start: #050816;
  --color-background-end: #0B1230;
  --color-surface: #0A1020;
  --color-surface-card: rgba(10, 16, 32, 0.7);
  --color-surface-hover: rgba(15, 23, 42, 0.85);
  --color-surface-light: rgba(255, 255, 255, 0.05);
  --background: #0F172A;
  --foreground: #F8FAFC;
  --text-muted: #94A3B8;
  --text-dim: #64748B;
  --border-light: rgba(255, 255, 255, 0.08);
  --border-active: rgba(0, 240, 255, 0.4);
  --border-purple: rgba(157, 78, 221, 0.4);
  --font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
  --max-width: 1400px;
  --content-width: 1240px;
  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 16px;
  --radius-xl: 24px;
  --radius-full: 9999px;
  --transition-fast: 0.2s ease;
  --transition-normal: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-slow: 0.5s cubic-bezier(0.4, 0, 0.2, 1);
}

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

html {
  font-family: var(--font-family);
  background-color: #050816;
  color: var(--foreground);
  scroll-behavior: smooth;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  background: linear-gradient(135deg, #050816 0%, #0F172A 50%, #0A1020 100%);
  background-attachment: fixed;
  color: var(--foreground);
  font-family: var(--font-family);
  line-height: 1.6;
  overflow-x: hidden;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

main {
  flex-grow: 1;
}

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

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

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

/* Custom Scrollbar */
::-webkit-scrollbar {
  width: 8px;
}
::-webkit-scrollbar-track {
  background: #050816;
}
::-webkit-scrollbar-thumb {
  background: #1E3A8A;
  border-radius: 4px;
}
::-webkit-scrollbar-thumb:hover {
  background: #00F0FF;
}

/* --- Container Utilities --- */
.container {
  width: 100%;
  max-width: var(--content-width);
  margin-left: auto;
  margin-right: auto;
  padding-left: 24px;
  padding-right: 24px;
}

.container-narrow {
  width: 100%;
  max-width: 900px;
  margin-left: auto;
  margin-right: auto;
  padding-left: 24px;
  padding-right: 24px;
}

/* --- Typography & Gradients --- */
.text-gradient {
  background: linear-gradient(90deg, #00F0FF 0%, #3B82F6 50%, #9D4EDD 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  display: inline-block;
}

.text-gradient-purple {
  background: linear-gradient(90deg, #9D4EDD 0%, #EC4899 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  display: inline-block;
}

.text-cyan { color: var(--color-accent); }
.text-purple { color: var(--color-accent-secondary); }
.text-blue { color: var(--color-accent-blue); }
.text-muted { color: var(--text-muted); }

/* --- Glassmorphism & Cards --- */
.glass {
  background: rgba(10, 16, 32, 0.45);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border: 1px solid var(--border-light);
}

.glass-card {
  background: var(--color-surface-card);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border: 1px solid var(--border-light);
  box-shadow: 0 4px 30px rgba(0, 0, 0, 0.5);
  border-radius: var(--radius-lg);
  transition: transform var(--transition-normal), border-color var(--transition-normal), box-shadow var(--transition-normal);
}

.glass-card:hover {
  border-color: rgba(255, 255, 255, 0.2);
  transform: translateY(-2px);
}

.card-hover-cyan:hover {
  border-color: var(--border-active);
  box-shadow: 0 10px 30px rgba(0, 240, 255, 0.15);
}

.card-hover-purple:hover {
  border-color: var(--border-purple);
  box-shadow: 0 10px 30px rgba(157, 78, 221, 0.15);
}

/* --- Buttons --- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 12px 24px;
  border-radius: var(--radius-full);
  font-weight: 600;
  font-size: 0.9375rem;
  line-height: 1.25;
  cursor: pointer;
  border: none;
  outline: none;
  transition: all var(--transition-normal);
  text-decoration: none;
  white-space: nowrap;
}

.btn-primary {
  background: linear-gradient(90deg, #00F0FF 0%, #3B82F6 100%);
  color: #050816;
  font-weight: 700;
  box-shadow: 0 4px 15px rgba(0, 240, 255, 0.25);
}

.btn-primary:hover {
  box-shadow: 0 0 25px rgba(0, 240, 255, 0.45);
  transform: translateY(-1px);
  color: #000;
}

.btn-purple {
  background: linear-gradient(90deg, #3B82F6 0%, #9D4EDD 100%);
  color: #ffffff;
  box-shadow: 0 4px 15px rgba(157, 78, 221, 0.25);
}

.btn-purple:hover {
  box-shadow: 0 0 25px rgba(157, 78, 221, 0.45);
  transform: translateY(-1px);
}

.btn-secondary {
  background: rgba(255, 255, 255, 0.05);
  backdrop-filter: blur(8px);
  border: 1px solid rgba(255, 255, 255, 0.15);
  color: #ffffff;
}

.btn-secondary:hover {
  background: rgba(255, 255, 255, 0.12);
  border-color: rgba(255, 255, 255, 0.3);
  transform: translateY(-1px);
}

.btn-white {
  background: #ffffff;
  color: #0A1020;
  font-weight: 700;
}

.btn-white:hover {
  background: #E2E8F0;
  transform: translateY(-1px);
}

.btn-sm {
  padding: 8px 18px;
  font-size: 0.875rem;
}

.btn-lg {
  padding: 16px 32px;
  font-size: 1rem;
}

/* Badges */
.badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 6px 14px;
  border-radius: var(--radius-full);
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.05em;
  text-transform: uppercase;
}

.badge-cyan {
  background: rgba(0, 240, 255, 0.1);
  border: 1px solid rgba(0, 240, 255, 0.3);
  color: var(--color-accent);
}

.badge-purple {
  background: rgba(157, 78, 221, 0.1);
  border: 1px solid rgba(157, 78, 221, 0.3);
  color: #C084FC;
}

.badge-blue {
  background: rgba(59, 130, 246, 0.1);
  border: 1px solid rgba(59, 130, 246, 0.3);
  color: #60A5FA;
}

/* --- Fixed Floating Navigation Header (Pure CSS, 0 JS) --- */
.header-wrapper {
  position: fixed;
  top: 18px;
  left: 0;
  right: 0;
  width: 100%;
  display: flex;
  justify-content: center;
  padding: 0 16px;
  z-index: 1000;
  pointer-events: none;
}

.mobile-nav-toggle {
  display: none;
  position: absolute;
  opacity: 0;
  pointer-events: none;
}

.site-header {
  pointer-events: auto;
  width: 100%;
  max-width: var(--max-width);
  background: rgba(10, 16, 32, 0.9);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: var(--radius-lg);
  padding: 10px 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  box-shadow: 0 12px 32px rgba(0, 0, 0, 0.45);
}

.logo-link {
  display: flex;
  align-items: center;
  gap: 12px;
  text-decoration: none;
  flex-shrink: 0;
}

.logo-img {
  width: 36px;
  height: 36px;
  object-fit: contain;
}

.logo-text {
  font-size: 1.15rem;
  font-weight: 800;
  letter-spacing: -0.01em;
  background: linear-gradient(90deg, #00F0FF, #9D4EDD);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  white-space: nowrap;
}

.desktop-nav {
  display: flex;
  align-items: center;
  gap: 24px;
  margin-left: auto;
  margin-right: 28px;
}

.nav-link {
  font-size: 0.9rem;
  font-weight: 500;
  color: #CBD5E1;
  text-decoration: none;
  transition: color var(--transition-fast);
  padding: 6px 0;
  position: relative;
}

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

.nav-link.active::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  height: 2px;
  background: linear-gradient(90deg, #00F0FF, #9D4EDD);
  border-radius: 2px;
}

.nav-cta {
  display: flex;
  align-items: center;
}

/* Mobile Toggle Button (Label for #mobile-nav-toggle) */
.mobile-toggle-btn {
  display: none;
  background: none;
  border: none;
  color: #ffffff;
  cursor: pointer;
  padding: 8px;
  border-radius: var(--radius-sm);
  pointer-events: auto;
  z-index: 1002;
}

.mobile-toggle-btn .icon-close {
  display: none;
}

/* Mobile Menu Overlay (Controlled via Pure CSS Checkbox Hack) */
.mobile-nav-overlay {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(5, 8, 22, 0.98);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  z-index: 999;
  flex-direction: column;
  padding: 120px 24px 40px;
  overflow-y: auto;
  pointer-events: auto;
}

.mobile-nav-toggle:checked ~ .mobile-nav-overlay {
  display: flex;
}

.mobile-nav-toggle:checked ~ .header-wrapper .mobile-toggle-btn .icon-menu {
  display: none;
}

.mobile-nav-toggle:checked ~ .header-wrapper .mobile-toggle-btn .icon-close {
  display: block;
}

.mobile-nav-close {
  position: absolute;
  top: 24px;
  right: 24px;
  font-size: 2rem;
  color: #94A3B8;
  cursor: pointer;
  line-height: 1;
  padding: 8px 12px;
  border-radius: var(--radius-sm);
  transition: color var(--transition-fast);
}

.mobile-nav-close:hover {
  color: #ffffff;
}

.mobile-nav-links {
  display: flex;
  flex-direction: column;
  gap: 16px;
  font-size: 1.25rem;
}

.mobile-nav-link {
  color: #CBD5E1;
  text-decoration: none;
  padding-bottom: 12px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.06);
  font-weight: 500;
}

.mobile-nav-link:hover, .mobile-nav-link.active {
  color: var(--color-accent);
}

.mobile-cta {
  margin-top: 24px;
}

/* --- Hero Section --- */
.hero-section {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  padding-top: 150px;
  padding-bottom: 60px;
  overflow: hidden;
}

.hero-bg {
  position: absolute;
  inset: 0;
  z-index: 0;
  pointer-events: none;
}

.glow-cyan {
  position: absolute;
  top: 20%;
  left: 15%;
  width: 400px;
  height: 400px;
  background: rgba(0, 240, 255, 0.15);
  border-radius: 50%;
  filter: blur(140px);
}

.glow-purple {
  position: absolute;
  bottom: 20%;
  right: 15%;
  width: 500px;
  height: 500px;
  background: rgba(157, 78, 221, 0.15);
  border-radius: 50%;
  filter: blur(160px);
}

.digital-grid {
  position: absolute;
  inset: 0;
  background-image: 
    linear-gradient(rgba(255, 255, 255, 0.03) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.03) 1px, transparent 1px);
  background-size: 40px 40px;
  transform: perspective(600px) rotateX(60deg) translateY(120px) translateZ(-150px);
  transform-origin: bottom center;
}

.hero-grid {
  display: grid;
  grid-template-columns: 1.15fr 0.85fr;
  gap: 48px;
  align-items: center;
  position: relative;
  z-index: 10;
}

.hero-content {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 24px;
}

.hero-title {
  font-size: clamp(2.5rem, 5vw, 4.25rem);
  font-weight: 800;
  line-height: 1.12;
  letter-spacing: -0.02em;
}

.hero-desc {
  font-size: clamp(1.05rem, 1.5vw, 1.25rem);
  color: #94A3B8;
  max-width: 540px;
  line-height: 1.6;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 16px;
  margin-top: 8px;
}

/* Right side 3D graphic */
.hero-visual {
  position: relative;
  height: 520px;
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
}

.orbit-ring-1 {
  position: absolute;
  width: 380px;
  height: 380px;
  border-radius: 50%;
  border: 1px dashed rgba(0, 240, 255, 0.25);
  animation: rotateCW 40s linear infinite;
}

.orbit-ring-2 {
  position: absolute;
  width: 280px;
  height: 280px;
  border-radius: 50%;
  border: 1px dashed rgba(157, 78, 221, 0.35);
  animation: rotateCCW 30s linear infinite;
}

@keyframes rotateCW {
  from { transform: rotate(0deg); }
  to { transform: rotate(360deg); }
}

@keyframes rotateCCW {
  from { transform: rotate(0deg); }
  to { transform: rotate(-360deg); }
}

.hero-center-card {
  position: relative;
  z-index: 10;
  width: 260px;
  height: 260px;
  padding: 24px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  overflow: hidden;
}

.card-blur-glow {
  position: absolute;
  top: 0;
  right: 0;
  width: 120px;
  height: 120px;
  background: rgba(0, 240, 255, 0.3);
  filter: blur(40px);
  z-index: -1;
}

.card-top {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.xr-badge {
  width: 42px;
  height: 42px;
  border-radius: 8px;
  background: rgba(0, 240, 255, 0.15);
  border: 1px solid rgba(0, 240, 255, 0.3);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-accent);
  font-family: monospace;
  font-weight: 700;
  font-size: 0.85rem;
}

.pulse-dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: var(--color-accent);
  box-shadow: 0 0 10px var(--color-accent);
  animation: pulse 2s infinite ease-in-out;
}

@keyframes pulse {
  0%, 100% { opacity: 1; transform: scale(1); }
  50% { opacity: 0.4; transform: scale(0.8); }
}

.progress-track {
  height: 6px;
  width: 100%;
  background: rgba(255, 255, 255, 0.1);
  border-radius: 3px;
  overflow: hidden;
  margin-top: 10px;
}

.progress-fill {
  height: 100%;
  width: 75%;
  background: linear-gradient(90deg, #00F0FF, #3B82F6);
  border-radius: 3px;
  animation: progressPulse 3s infinite alternate ease-in-out;
}

@keyframes progressPulse {
  0% { width: 45%; }
  100% { width: 92%; }
}

.floating-badge {
  position: absolute;
  padding: 12px 18px;
  border-radius: var(--radius-md);
  z-index: 11;
  animation: floatUpDown 4s infinite ease-in-out;
}

.floating-badge-1 {
  top: 60px;
  right: 20px;
  border-left: 3px solid var(--color-accent-secondary);
}

.floating-badge-2 {
  bottom: 80px;
  left: 20px;
  border-left: 3px solid var(--color-accent);
  animation-delay: -2s;
}

@keyframes floatUpDown {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-12px); }
}

/* --- Trusted By Section (Marquee) --- */
.trusted-section {
  padding: 56px 0;
  border-top: 1px solid rgba(255, 255, 255, 0.05);
  border-bottom: 1px solid rgba(255, 255, 255, 0.05);
  background: rgba(3, 5, 12, 0.6);
  overflow: hidden;
}

.section-eyebrow {
  text-align: center;
  font-size: 0.8125rem;
  font-weight: 700;
  letter-spacing: 0.15em;
  color: #94A3B8;
  text-transform: uppercase;
  margin-bottom: 32px;
}

.marquee-container {
  display: flex;
  overflow: hidden;
  user-select: none;
  mask-image: linear-gradient(to right, transparent, black 15%, black 85%, transparent);
  -webkit-mask-image: linear-gradient(to right, transparent, black 15%, black 85%, transparent);
}

.marquee-track {
  display: flex;
  gap: 64px;
  animation: marquee 30s linear infinite;
  flex-shrink: 0;
  padding: 0 32px;
  align-items: center;
}

.marquee-item {
  display: flex;
  align-items: center;
  gap: 12px;
  opacity: 0.55;
  filter: grayscale(100%);
  transition: all var(--transition-normal);
  white-space: nowrap;
}

.marquee-item:hover {
  opacity: 1;
  filter: grayscale(0%);
}

.marquee-item span {
  font-size: 1.15rem;
  font-weight: 700;
  font-family: monospace;
  color: #ffffff;
}

@keyframes marquee {
  0% { transform: translateX(0); }
  100% { transform: translateX(-50%); }
}

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

.section-header.text-center {
  text-align: center;
  max-width: 720px;
  margin-left: auto;
  margin-right: auto;
}

.section-title {
  font-size: clamp(2rem, 3.5vw, 3rem);
  font-weight: 800;
  line-height: 1.2;
  letter-spacing: -0.02em;
  margin-bottom: 16px;
}

.section-desc {
  font-size: 1.125rem;
  color: var(--text-muted);
  line-height: 1.6;
}

/* --- Solutions Grid --- */
.solutions-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: 28px;
}

.solution-card {
  padding: 32px;
  display: flex;
  flex-direction: column;
  position: relative;
  overflow: hidden;
  height: 100%;
}

.solution-icon-box {
  width: 56px;
  height: 56px;
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 24px;
  transition: transform var(--transition-normal);
}

.solution-card:hover .solution-icon-box {
  transform: scale(1.08);
}

.solution-tag {
  font-size: 0.75rem;
  font-weight: 800;
  letter-spacing: 0.1em;
  color: var(--color-accent);
  text-transform: uppercase;
  margin-bottom: 8px;
}

.solution-heading {
  font-size: 1.375rem;
  font-weight: 700;
  color: #ffffff;
  margin-bottom: 12px;
}

.solution-text {
  color: var(--text-muted);
  font-size: 0.95rem;
  line-height: 1.6;
  margin-bottom: 24px;
  flex-grow: 1;
}

.card-link {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  color: #ffffff;
  font-size: 0.9rem;
  font-weight: 600;
  transition: color var(--transition-fast);
  margin-top: auto;
}

.card-link svg {
  transition: transform var(--transition-normal);
}

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

.card-link:hover svg {
  transform: translateX(4px);
}

/* --- Statistics Section --- */
.stats-section {
  padding: 80px 0;
  background: linear-gradient(180deg, #050816 0%, #0A1020 100%);
  border-top: 1px solid rgba(255, 255, 255, 0.05);
  border-bottom: 1px solid rgba(255, 255, 255, 0.05);
  position: relative;
}

.stats-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 32px;
  text-align: center;
}

.stat-number {
  font-size: clamp(2.75rem, 4vw, 4rem);
  font-weight: 800;
  font-family: monospace;
  line-height: 1;
  margin-bottom: 12px;
}

.stat-label {
  color: #94A3B8;
  font-size: 0.875rem;
  font-weight: 600;
  letter-spacing: 0.05em;
  text-transform: uppercase;
}

/* --- Featured Simulators --- */
.simulators-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 24px;
}

.simulator-card {
  position: relative;
  min-height: 480px;
  border-radius: var(--radius-lg);
  overflow: hidden;
  border: 1px solid rgba(255, 255, 255, 0.1);
  transition: all var(--transition-normal);
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  padding: 32px 28px;
  background: #0A1020;
}

.simulator-card:hover {
  border-color: rgba(0, 240, 255, 0.5);
  box-shadow: 0 12px 35px rgba(0, 240, 255, 0.2);
  transform: translateY(-2px);
}

.simulator-bg-img {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform var(--transition-slow);
  z-index: 1;
}

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

.simulator-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(180deg, rgba(5, 8, 22, 0.35) 0%, rgba(5, 8, 22, 0.75) 45%, rgba(5, 8, 22, 0.98) 85%);
  z-index: 2;
  pointer-events: none;
}

.simulator-card-content {
  position: relative;
  z-index: 3;
}

.simulator-tag {
  display: inline-block;
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  color: var(--color-accent);
  text-transform: uppercase;
  margin-bottom: 8px;
}

.simulator-title {
  font-size: 1.35rem;
  font-weight: 700;
  color: #ffffff;
  margin: 8px 0 12px;
  transition: color var(--transition-fast);
  text-shadow: 0 2px 8px rgba(0, 0, 0, 0.8);
}

.simulator-card:hover .simulator-title {
  color: var(--color-accent);
}

.simulator-desc {
  font-size: 0.9rem;
  color: #CBD5E1;
  margin-bottom: 16px;
  line-height: 1.6;
  text-shadow: 0 1px 4px rgba(0, 0, 0, 0.7);
}

.sim-features {
  font-size: 0.825rem;
  color: #94A3B8;
  margin-bottom: 20px;
  line-height: 1.5;
}

.sim-features span {
  color: #E2E8F0;
  font-weight: 500;
}

/* --- Technologies Grid --- */
.tech-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(140px, 1fr));
  gap: 16px;
}

.tech-card {
  padding: 20px 16px;
  text-align: center;
  border-radius: var(--radius-md);
  border: 1px solid rgba(255, 255, 255, 0.08);
  background: rgba(10, 16, 32, 0.5);
  backdrop-filter: blur(10px);
  transition: all var(--transition-normal);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  min-height: 100px;
}

.tech-card:hover {
  border-color: rgba(59, 130, 246, 0.6);
  background: rgba(59, 130, 246, 0.1);
  transform: translateY(-2px);
}

.tech-cat {
  font-size: 0.7rem;
  font-weight: 700;
  color: #64748B;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-bottom: 6px;
  transition: color var(--transition-fast);
}

.tech-card:hover .tech-cat {
  color: var(--color-accent-blue);
}

.tech-name {
  font-size: 0.95rem;
  font-weight: 700;
  color: #ffffff;
}

/* --- Why Us Section --- */
.why-us-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 40px;
}

.why-card {
  position: relative;
  transition: all var(--transition-normal);
}

.why-number {
  font-size: 3.5rem;
  font-weight: 800;
  font-family: monospace;
  color: rgba(255, 255, 255, 0.08);
  line-height: 1;
  margin-bottom: 12px;
  transition: color var(--transition-normal);
}

.why-card:hover .why-number {
  color: rgba(0, 240, 255, 0.25);
}

.why-body {
  border-left: 2px solid rgba(255, 255, 255, 0.1);
  padding-left: 20px;
  transition: border-color var(--transition-normal);
}

.why-card:hover .why-body {
  border-color: var(--color-accent);
}

.why-heading {
  font-size: 1.25rem;
  font-weight: 700;
  color: #ffffff;
  margin-bottom: 8px;
}

.why-desc {
  color: var(--text-muted);
  font-size: 0.925rem;
  line-height: 1.6;
}

/* --- CTA Section --- */
.cta-section {
  padding: 96px 0;
  position: relative;
  background: #0A1020;
  overflow: hidden;
  border-top: 1px solid rgba(0, 240, 255, 0.3);
  border-bottom: 1px solid rgba(157, 78, 221, 0.3);
  text-align: center;
}

.cta-radial-glow {
  position: absolute;
  inset: 0;
  background: radial-gradient(circle at center, rgba(157, 78, 221, 0.2) 0%, transparent 70%);
  pointer-events: none;
}

.cta-title {
  font-size: clamp(2.25rem, 4vw, 3.5rem);
  font-weight: 800;
  line-height: 1.15;
  margin-bottom: 20px;
}

.cta-desc {
  font-size: 1.125rem;
  color: var(--text-muted);
  max-width: 600px;
  margin: 0 auto 36px;
  line-height: 1.6;
}

.cta-buttons {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 16px;
}

/* --- Footer --- */
.site-footer {
  background: #03050C;
  border-top: 1px solid rgba(255, 255, 255, 0.06);
  padding: 80px 0 36px;
  color: #94A3B8;
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1.5fr;
  gap: 48px;
  margin-bottom: 64px;
}

.footer-brand p {
  margin-top: 16px;
  margin-bottom: 24px;
  max-width: 360px;
  font-size: 0.925rem;
  line-height: 1.6;
}

.footer-heading {
  font-size: 0.8125rem;
  font-weight: 800;
  letter-spacing: 0.1em;
  color: #ffffff;
  text-transform: uppercase;
  margin-bottom: 24px;
}

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

.footer-nav-link {
  color: #94A3B8;
  font-size: 0.925rem;
  text-decoration: none;
  transition: color var(--transition-fast);
}

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

.footer-contact-item {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  margin-bottom: 16px;
  font-size: 0.925rem;
}

.footer-contact-item svg {
  color: var(--color-accent);
  margin-top: 3px;
  flex-shrink: 0;
}

.footer-bottom {
  padding-top: 32px;
  border-top: 1px solid rgba(255, 255, 255, 0.05);
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  font-size: 0.875rem;
}

.footer-legal-links {
  display: flex;
  gap: 24px;
}

.footer-legal-link {
  color: #64748B;
  text-decoration: none;
  transition: color var(--transition-fast);
}

.footer-legal-link:hover {
  color: #ffffff;
}

/* --- Subpage Page Header --- */
.page-header {
  padding-top: 160px;
  padding-bottom: 64px;
  position: relative;
  background: #0A1020;
  text-align: center;
  overflow: hidden;
}

.page-header-glow-1 {
  position: absolute;
  top: 0;
  right: 0;
  width: 400px;
  height: 400px;
  background: rgba(0, 240, 255, 0.1);
  border-radius: 50%;
  filter: blur(120px);
  pointer-events: none;
}

.page-header-glow-2 {
  position: absolute;
  bottom: 0;
  left: 0;
  width: 400px;
  height: 400px;
  background: rgba(157, 78, 221, 0.1);
  border-radius: 50%;
  filter: blur(120px);
  pointer-events: none;
}

.page-title {
  font-size: clamp(2.25rem, 4vw, 3.5rem);
  font-weight: 800;
  margin-bottom: 16px;
  line-height: 1.15;
}

.page-subtitle {
  font-size: 1.15rem;
  color: var(--text-muted);
  max-width: 680px;
  margin: 0 auto;
  line-height: 1.6;
}

/* --- Section Layout & Detail Cards --- */
.page-section {
  padding: 80px 0;
}

.detail-grid {
  display: grid;
  grid-template-columns: 1.15fr 0.85fr;
  gap: 56px;
  align-items: flex-start;
  margin-bottom: 64px;
}

.detail-img-box {
  position: relative;
  height: 450px;
  border-radius: var(--radius-lg);
  overflow: hidden;
  border: 1px solid rgba(255, 255, 255, 0.1);
  position: sticky;
  top: 120px;
}

.detail-img-box img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.checklist {
  display: flex;
  flex-direction: column;
  gap: 12px;
  margin: 24px 0 32px;
}

.checklist-item {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  color: #E2E8F0;
  font-size: 0.95rem;
}

.checklist-item svg {
  color: var(--color-accent);
  margin-top: 3px;
  flex-shrink: 0;
}

.tag-cloud {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin: 16px 0 32px;
}

.tech-tag {
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: var(--radius-sm);
  padding: 6px 14px;
  font-size: 0.85rem;
  color: #CBD5E1;
}

/* --- Contact Form & Layout --- */
.contact-layout {
  display: grid;
  grid-template-columns: 1fr 1.6fr;
  gap: 48px;
}

.contact-info-list {
  display: flex;
  flex-direction: column;
  gap: 28px;
  margin-top: 32px;
}

.contact-card-item {
  display: flex;
  align-items: flex-start;
  gap: 16px;
}

.contact-icon-wrapper {
  width: 48px;
  height: 48px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.form-group {
  margin-bottom: 20px;
}

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
}

.form-label {
  display: block;
  font-size: 0.875rem;
  font-weight: 500;
  color: #94A3B8;
  margin-bottom: 8px;
}

.form-control {
  width: 100%;
  background: rgba(5, 8, 22, 0.6);
  border: 1px solid rgba(255, 255, 255, 0.12);
  border-radius: var(--radius-sm);
  padding: 12px 16px;
  color: #ffffff;
  font-size: 0.95rem;
  outline: none;
  transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}

.form-control:focus {
  border-color: var(--color-accent);
  box-shadow: 0 0 10px rgba(0, 240, 255, 0.25);
}

select.form-control option {
  background: #0A1020;
  color: #ffffff;
}

textarea.form-control {
  resize: vertical;
  min-height: 120px;
}

/* --- Project Cards (Portfolio) --- */
.project-card {
  border-radius: var(--radius-lg);
  overflow: hidden;
  background: var(--color-surface);
  border: 1px solid rgba(255, 255, 255, 0.08);
  transition: all var(--transition-normal);
  display: flex;
  flex-direction: column;
}

.project-card:hover {
  border-color: rgba(0, 240, 255, 0.4);
  box-shadow: 0 12px 30px rgba(0, 240, 255, 0.15);
}

.project-img-wrapper {
  position: relative;
  height: 260px;
  overflow: hidden;
}

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

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

.project-badge-tag {
  position: absolute;
  top: 16px;
  left: 16px;
  z-index: 2;
  background: rgba(0, 0, 0, 0.65);
  backdrop-filter: blur(8px);
  padding: 4px 12px;
  border-radius: var(--radius-full);
  font-size: 0.75rem;
  font-weight: 700;
  color: var(--color-accent);
}

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

.project-title {
  font-size: 1.5rem;
  font-weight: 700;
  color: #ffffff;
  margin-bottom: 12px;
  transition: color var(--transition-fast);
}

.project-card:hover .project-title {
  color: var(--color-accent);
}

.project-desc {
  color: var(--text-muted);
  font-size: 0.95rem;
  line-height: 1.6;
  margin-bottom: 24px;
}

/* --- Responsive Media Queries --- */
@media (max-width: 1024px) {
  .hero-grid {
    grid-template-columns: 1fr;
    text-align: center;
  }

  .hero-content {
    align-items: center;
  }

  .hero-desc {
    max-width: 600px;
  }

  .hero-visual {
    display: none;
  }

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

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

  .footer-grid {
    grid-template-columns: 1fr 1fr;
    gap: 40px;
  }

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

  .detail-img-box {
    position: static;
    height: 350px;
  }

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

@media (max-width: 768px) {
  .hero-section {
    padding-top: 130px;
  }

  .stats-grid {
    grid-template-columns: 1fr 1fr;
    gap: 24px;
  }

  .form-row {
    grid-template-columns: 1fr;
    gap: 0;
  }

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

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

@media (max-width: 480px) {
  .container, .container-narrow {
    padding-left: 16px;
    padding-right: 16px;
  }

  .hero-title {
    font-size: 2.25rem;
  }

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

  .hero-actions {
    flex-direction: column;
    width: 100%;
  }

  .btn-lg {
    width: 100%;
  }

  .solutions-grid, .simulators-grid {
    grid-template-columns: 1fr;
  }
}