/* ===============================================
   NexCore - Enterprise IT Solutions
   Modern CSS Design System
   =============================================== */

/* ===============================================
   CSS Variables / Design Tokens
   =============================================== */
:root {
  /* Colors - Dark Premium Theme */
  --color-bg-primary: #0a0a0f;
  --color-bg-secondary: #111118;
  --color-bg-tertiary: #16161f;
  --color-bg-elevated: #1a1a24;

  /* Accent Colors */
  --color-primary: #6366f1;
  --color-primary-light: #818cf8;
  --color-primary-dark: #4f46e5;
  --color-primary-glow: rgba(99, 102, 241, 0.4);

  --color-secondary: #06b6d4;
  --color-secondary-light: #22d3ee;

  --color-accent: #10b981;
  --color-warning: #f59e0b;
  --color-error: #ef4444;

  /* Text Colors */
  --color-text-primary: #f8fafc;
  --color-text-secondary: #94a3b8;
  --color-text-tertiary: #64748b;
  --color-text-muted: #475569;

  /* Borders & Lines */
  --color-border: rgba(255, 255, 255, 0.08);
  --color-border-light: rgba(255, 255, 255, 0.12);
  --color-border-focus: rgba(99, 102, 241, 0.5);

  /* Gradients */
  --gradient-primary: linear-gradient(135deg, #6366f1 0%, #8b5cf6 50%, #06b6d4 100%);
  --gradient-dark: linear-gradient(180deg, var(--color-bg-primary) 0%, var(--color-bg-secondary) 100%);
  --gradient-glow: radial-gradient(ellipse at center, var(--color-primary-glow) 0%, transparent 70%);

  /* Typography */
  --font-primary: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --font-heading: 'Space Grotesk', var(--font-primary);

  --font-size-xs: 0.75rem;
  --font-size-sm: 0.875rem;
  --font-size-base: 1rem;
  --font-size-lg: 1.125rem;
  --font-size-xl: 1.25rem;
  --font-size-2xl: 1.5rem;
  --font-size-3xl: 1.875rem;
  --font-size-4xl: 2.25rem;
  --font-size-5xl: 3rem;
  --font-size-6xl: 3.75rem;
  --font-size-7xl: 4.5rem;

  --font-weight-light: 300;
  --font-weight-normal: 400;
  --font-weight-medium: 500;
  --font-weight-semibold: 600;
  --font-weight-bold: 700;
  --font-weight-extrabold: 800;

  --line-height-tight: 1.1;
  --line-height-snug: 1.25;
  --line-height-normal: 1.5;
  --line-height-relaxed: 1.625;

  /* Spacing */
  --spacing-xs: 0.25rem;
  --spacing-sm: 0.5rem;
  --spacing-md: 1rem;
  --spacing-lg: 1.5rem;
  --spacing-xl: 2rem;
  --spacing-2xl: 3rem;
  --spacing-3xl: 4rem;
  --spacing-4xl: 6rem;
  --spacing-5xl: 8rem;

  /* Layout */
  --container-max: 1280px;
  --container-narrow: 960px;
  --header-height: 80px;

  /* Border Radius */
  --radius-sm: 4px;
  --radius-md: 8px;
  --radius-lg: 12px;
  --radius-xl: 16px;
  --radius-2xl: 24px;
  --radius-full: 9999px;

  /* Shadows */
  --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.3);
  --shadow-md: 0 4px 6px rgba(0, 0, 0, 0.4);
  --shadow-lg: 0 10px 25px rgba(0, 0, 0, 0.5);
  --shadow-xl: 0 20px 40px rgba(0, 0, 0, 0.6);
  --shadow-glow: 0 0 40px var(--color-primary-glow);

  /* Transitions */
  --transition-fast: 150ms ease;
  --transition-base: 250ms ease;
  --transition-slow: 400ms ease;
  --transition-bounce: 500ms cubic-bezier(0.68, -0.55, 0.265, 1.55);
}

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

html {
  scroll-behavior: smooth;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

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

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

button {
  font-family: inherit;
  cursor: pointer;
  border: none;
  background: none;
}

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

ul,
ol {
  list-style: none;
}

input,
textarea,
select {
  font-family: inherit;
  font-size: inherit;
}

/* ===============================================
   Layout
   =============================================== */
.container {
  width: 100%;
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 var(--spacing-lg);
}

.section-header {
  max-width: 680px;
  margin-bottom: var(--spacing-3xl);
}

.section-header.center {
  margin-left: auto;
  margin-right: auto;
  text-align: center;
}

.section-tag {
  display: inline-flex;
  align-items: center;
  gap: var(--spacing-sm);
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-semibold);
  color: var(--color-primary-light);
  text-transform: uppercase;
  letter-spacing: 0.1em;
  margin-bottom: var(--spacing-md);
}

.section-title {
  font-family: var(--font-heading);
  font-size: clamp(var(--font-size-3xl), 5vw, var(--font-size-5xl));
  font-weight: var(--font-weight-bold);
  line-height: var(--line-height-tight);
  color: var(--color-text-primary);
  margin-bottom: var(--spacing-lg);
}

.section-description {
  font-size: var(--font-size-lg);
  color: var(--color-text-secondary);
  line-height: var(--line-height-relaxed);
}

/* ===============================================
   Header / Navigation
   =============================================== */
.header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: var(--header-height);
  z-index: 1000;
  transition: all var(--transition-base);
}

.header::before {
  content: '';
  position: absolute;
  inset: 0;
  background: rgba(10, 10, 15, 0.8);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--color-border);
  opacity: 0;
  transition: opacity var(--transition-base);
}

.header.scrolled::before {
  opacity: 1;
}

.header-container {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 100%;
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 var(--spacing-lg);
}

/* Logo */
.logo {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  font-family: var(--font-heading);
  font-size: var(--font-size-xl);
  font-weight: var(--font-weight-bold);
  color: var(--color-text-primary);
  z-index: 1;
}

.logo-icon {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  background: var(--gradient-primary);
  border-radius: var(--radius-md);
  font-size: var(--font-size-sm);
  color: white;
}

/* Navigation */
.nav {
  position: absolute;
  left: 50%;
  transform: translateX(-50%);
}

.nav-list {
  display: flex;
  align-items: center;
  gap: var(--spacing-xs);
}

.nav-link {
  position: relative;
  display: inline-flex;
  align-items: center;
  padding: var(--spacing-sm) var(--spacing-md);
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-medium);
  color: var(--color-text-secondary);
  border-radius: var(--radius-md);
  transition: all var(--transition-fast);
}

.nav-link:hover {
  color: var(--color-text-primary);
  background: rgba(255, 255, 255, 0.05);
}

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

.nav-link.active::after {
  content: '';
  position: absolute;
  bottom: 2px;
  left: 50%;
  transform: translateX(-50%);
  width: 4px;
  height: 4px;
  background: var(--color-primary);
  border-radius: var(--radius-full);
}

/* Header Actions */
.header-actions {
  display: flex;
  align-items: center;
  gap: var(--spacing-md);
  z-index: 1;
}

/* Language Toggle */
.lang-toggle {
  display: flex;
  align-items: center;
  background: var(--color-bg-tertiary);
  border-radius: var(--radius-full);
  padding: 3px;
  border: 1px solid var(--color-border);
}

.lang-btn {
  padding: var(--spacing-xs) var(--spacing-sm);
  font-size: var(--font-size-xs);
  font-weight: var(--font-weight-semibold);
  color: var(--color-text-tertiary);
  border-radius: var(--radius-full);
  transition: all var(--transition-fast);
}

.lang-btn:hover {
  color: var(--color-text-secondary);
}

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

/* Mobile Toggle */
.mobile-toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  width: 40px;
  height: 40px;
  gap: 5px;
}

.mobile-toggle span {
  display: block;
  width: 22px;
  height: 2px;
  background: var(--color-text-primary);
  border-radius: 2px;
  transition: all var(--transition-fast);
}

.mobile-toggle.active span:nth-child(1) {
  transform: rotate(45deg) translate(5px, 5px);
}

.mobile-toggle.active span:nth-child(2) {
  opacity: 0;
}

.mobile-toggle.active span:nth-child(3) {
  transform: rotate(-45deg) translate(5px, -5px);
}

/* ===============================================
   Buttons
   =============================================== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--spacing-sm);
  font-weight: var(--font-weight-semibold);
  border-radius: var(--radius-lg);
  transition: all var(--transition-base);
  white-space: nowrap;
}

.btn-sm {
  height: 40px;
  padding: 0 var(--spacing-lg);
  font-size: var(--font-size-sm);
}

.btn-lg {
  height: 52px;
  padding: 0 var(--spacing-xl);
  font-size: var(--font-size-base);
}

.btn-full {
  width: 100%;
}

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

.btn:hover .btn-icon {
  transform: translateX(4px);
}

.btn-primary {
  background: var(--gradient-primary);
  color: white;
  box-shadow: 0 4px 15px rgba(99, 102, 241, 0.3);
}

.btn-primary:hover {
  box-shadow: 0 6px 25px rgba(99, 102, 241, 0.5);
  transform: translateY(-2px);
}

.btn-outline {
  background: transparent;
  color: var(--color-text-primary);
  border: 1px solid var(--color-border-light);
}

.btn-outline:hover {
  background: rgba(255, 255, 255, 0.05);
  border-color: var(--color-text-tertiary);
}

/* ===============================================
   Hero Section
   =============================================== */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  padding: calc(var(--header-height) + var(--spacing-4xl)) 0 var(--spacing-4xl);
  overflow: hidden;
}

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

.hero-gradient {
  position: absolute;
  top: -30%;
  left: 50%;
  transform: translateX(-50%);
  width: 150%;
  height: 80%;
  background: var(--gradient-glow);
  opacity: 0.5;
}

.hero-grid {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(255, 255, 255, 0.02) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.02) 1px, transparent 1px);
  background-size: 60px 60px;
  mask-image: radial-gradient(ellipse at center, black 0%, transparent 70%);
  -webkit-mask-image: radial-gradient(ellipse at center, black 0%, transparent 70%);
}

.hero-glow {
  position: absolute;
  bottom: 10%;
  right: -20%;
  width: 600px;
  height: 600px;
  background: radial-gradient(circle, rgba(6, 182, 212, 0.15) 0%, transparent 70%);
}

.hero-content {
  position: relative;
  z-index: 1;
  text-align: center;
  max-width: 900px;
  margin: 0 auto;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: var(--spacing-sm);
  padding: var(--spacing-sm) var(--spacing-lg);
  background: rgba(99, 102, 241, 0.1);
  border: 1px solid rgba(99, 102, 241, 0.3);
  border-radius: var(--radius-full);
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-medium);
  color: var(--color-primary-light);
  margin-bottom: var(--spacing-xl);
}

.badge-dot {
  width: 8px;
  height: 8px;
  background: var(--color-accent);
  border-radius: 50%;
  animation: pulse 2s infinite;
}

@keyframes pulse {

  0%,
  100% {
    opacity: 1;
    transform: scale(1);
  }

  50% {
    opacity: 0.5;
    transform: scale(1.2);
  }
}

.hero-title {
  font-family: var(--font-heading);
  font-size: clamp(var(--font-size-4xl), 7vw, var(--font-size-7xl));
  font-weight: var(--font-weight-bold);
  line-height: var(--line-height-tight);
  margin-bottom: var(--spacing-xl);
}

.hero-title span {
  display: block;
}

.gradient-text {
  background: var(--gradient-primary);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}

.hero-description {
  font-size: var(--font-size-lg);
  color: var(--color-text-secondary);
  line-height: var(--line-height-relaxed);
  max-width: 680px;
  margin: 0 auto var(--spacing-2xl);
}

.hero-cta {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: var(--spacing-md);
  margin-bottom: var(--spacing-4xl);
}

.hero-metrics {
  display: flex;
  justify-content: center;
  align-items: center;
  gap: var(--spacing-2xl);
  flex-wrap: wrap;
}

.metric {
  text-align: center;
}

.metric-value {
  display: block;
  font-family: var(--font-heading);
  font-size: var(--font-size-4xl);
  font-weight: var(--font-weight-bold);
  color: var(--color-text-primary);
  margin-bottom: var(--spacing-xs);
}

.metric-label {
  font-size: var(--font-size-sm);
  color: var(--color-text-tertiary);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.metric-divider {
  width: 1px;
  height: 50px;
  background: var(--color-border);
}

.hero-scroll {
  position: absolute;
  bottom: var(--spacing-xl);
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--spacing-sm);
  font-size: var(--font-size-xs);
  color: var(--color-text-tertiary);
  text-transform: uppercase;
  letter-spacing: 0.1em;
}

.scroll-line {
  width: 1px;
  height: 60px;
  background: linear-gradient(to bottom, var(--color-primary), transparent);
  animation: scrollLine 2s infinite;
}

@keyframes scrollLine {
  0% {
    transform: scaleY(0);
    transform-origin: top;
  }

  50% {
    transform: scaleY(1);
    transform-origin: top;
  }

  50.1% {
    transform-origin: bottom;
  }

  100% {
    transform: scaleY(0);
    transform-origin: bottom;
  }
}

/* ===============================================
   Trust Bar
   =============================================== */
.trust-bar {
  padding: var(--spacing-3xl) 0;
  border-top: 1px solid var(--color-border);
  border-bottom: 1px solid var(--color-border);
  background: var(--color-bg-secondary);
}

.trust-label {
  text-align: center;
  font-size: var(--font-size-sm);
  color: var(--color-text-tertiary);
  text-transform: uppercase;
  letter-spacing: 0.1em;
  margin-bottom: var(--spacing-xl);
}

.trust-logos {
  display: flex;
  justify-content: center;
  align-items: center;
  flex-wrap: wrap;
  gap: var(--spacing-2xl);
}

.trust-logo {
  font-family: var(--font-heading);
  font-size: var(--font-size-lg);
  font-weight: var(--font-weight-semibold);
  color: var(--color-text-muted);
  opacity: 0.6;
  transition: opacity var(--transition-fast);
}

.trust-logo:hover {
  opacity: 1;
}

/* ===============================================
   Services Section
   =============================================== */
.services {
  padding: var(--spacing-5xl) 0;
  background: var(--color-bg-primary);
}

.services-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(340px, 1fr));
  gap: var(--spacing-xl);
}

.service-card {
  position: relative;
  padding: var(--spacing-2xl);
  background: var(--color-bg-secondary);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  transition: all var(--transition-base);
}

.service-card:hover {
  background: var(--color-bg-tertiary);
  border-color: var(--color-border-light);
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
}

.service-card.featured {
  background: linear-gradient(135deg, rgba(99, 102, 241, 0.1) 0%, rgba(6, 182, 212, 0.05) 100%);
  border-color: rgba(99, 102, 241, 0.3);
}

.service-card.featured:hover {
  border-color: rgba(99, 102, 241, 0.5);
}

.card-badge {
  position: absolute;
  top: var(--spacing-lg);
  right: var(--spacing-lg);
  padding: var(--spacing-xs) var(--spacing-sm);
  background: var(--gradient-primary);
  border-radius: var(--radius-full);
  font-size: var(--font-size-xs);
  font-weight: var(--font-weight-semibold);
  color: white;
}

.service-icon {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 56px;
  height: 56px;
  background: linear-gradient(135deg, rgba(99, 102, 241, 0.2) 0%, rgba(6, 182, 212, 0.1) 100%);
  border-radius: var(--radius-lg);
  margin-bottom: var(--spacing-lg);
}

.service-icon svg {
  width: 28px;
  height: 28px;
  stroke: var(--color-primary-light);
}

.service-card h3 {
  font-family: var(--font-heading);
  font-size: var(--font-size-xl);
  font-weight: var(--font-weight-semibold);
  color: var(--color-text-primary);
  margin-bottom: var(--spacing-md);
}

.service-card>p {
  font-size: var(--font-size-base);
  color: var(--color-text-secondary);
  line-height: var(--line-height-relaxed);
  margin-bottom: var(--spacing-lg);
}

.service-features {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-sm);
}

.service-features li {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  font-size: var(--font-size-sm);
  color: var(--color-text-tertiary);
}

.service-features li::before {
  content: '→';
  color: var(--color-primary);
}

/* ===============================================
   Expertise Section
   =============================================== */
.expertise {
  padding: var(--spacing-5xl) 0;
  background: var(--color-bg-secondary);
}

.expertise-content {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--spacing-4xl);
  align-items: center;
}

.expertise-text .section-title {
  margin-bottom: var(--spacing-lg);
}

.expertise-text .section-description {
  margin-bottom: var(--spacing-2xl);
}

.expertise-list {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-lg);
}

.expertise-item {
  display: flex;
  gap: var(--spacing-md);
}

.expertise-icon {
  flex-shrink: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  width: 44px;
  height: 44px;
  background: rgba(16, 185, 129, 0.1);
  border-radius: var(--radius-md);
}

.expertise-icon svg {
  width: 22px;
  height: 22px;
  stroke: var(--color-accent);
}

.expertise-details h4 {
  font-size: var(--font-size-base);
  font-weight: var(--font-weight-semibold);
  color: var(--color-text-primary);
  margin-bottom: var(--spacing-xs);
}

.expertise-details p {
  font-size: var(--font-size-sm);
  color: var(--color-text-tertiary);
}

/* Tech Stack */
.tech-stack {
  padding: var(--spacing-2xl);
  background: var(--color-bg-tertiary);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
}

.tech-stack h3 {
  font-family: var(--font-heading);
  font-size: var(--font-size-lg);
  font-weight: var(--font-weight-semibold);
  color: var(--color-text-primary);
  margin-bottom: var(--spacing-xl);
}

.tech-grid {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-lg);
}

.tech-item {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-sm);
}

.tech-name {
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-medium);
  color: var(--color-text-secondary);
}

.tech-bar {
  height: 6px;
  background: var(--color-bg-primary);
  border-radius: var(--radius-full);
  overflow: hidden;
}

.tech-fill {
  height: 100%;
  background: var(--gradient-primary);
  border-radius: var(--radius-full);
  transition: width 1s ease-out;
}

/* ===============================================
   About Section
   =============================================== */
.about {
  padding: var(--spacing-5xl) 0;
  background: var(--color-bg-primary);
}

.about-cards {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--spacing-xl);
  margin-bottom: var(--spacing-4xl);
}

.about-card {
  text-align: center;
  padding: var(--spacing-2xl);
  background: var(--color-bg-secondary);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  transition: all var(--transition-base);
}

.about-card:hover {
  transform: translateY(-4px);
  border-color: var(--color-border-light);
}

.about-icon {
  font-size: var(--font-size-4xl);
  margin-bottom: var(--spacing-md);
}

.about-card h3 {
  font-family: var(--font-heading);
  font-size: var(--font-size-lg);
  font-weight: var(--font-weight-semibold);
  color: var(--color-text-primary);
  margin-bottom: var(--spacing-md);
}

.about-card p {
  font-size: var(--font-size-base);
  color: var(--color-text-secondary);
  line-height: var(--line-height-relaxed);
}

/* Team Highlight */
.team-highlight {
  display: flex;
  justify-content: center;
}

.team-info {
  text-align: center;
  max-width: 680px;
  padding: var(--spacing-3xl);
  background: linear-gradient(135deg, rgba(99, 102, 241, 0.1) 0%, rgba(6, 182, 212, 0.05) 100%);
  border: 1px solid rgba(99, 102, 241, 0.2);
  border-radius: var(--radius-2xl);
}

.team-info h3 {
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-semibold);
  color: var(--color-primary-light);
  text-transform: uppercase;
  letter-spacing: 0.1em;
  margin-bottom: var(--spacing-md);
}

.team-lead-name {
  font-family: var(--font-heading);
  font-size: var(--font-size-3xl);
  font-weight: var(--font-weight-bold);
  color: var(--color-text-primary);
  margin-bottom: var(--spacing-xs);
}

.team-lead-role {
  font-size: var(--font-size-base);
  color: var(--color-text-secondary);
  margin-bottom: var(--spacing-lg);
}

.team-lead-bio {
  font-size: var(--font-size-base);
  color: var(--color-text-tertiary);
  line-height: var(--line-height-relaxed);
  margin-bottom: var(--spacing-xl);
}

.team-certs {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: var(--spacing-sm);
}

.cert {
  padding: var(--spacing-xs) var(--spacing-md);
  background: rgba(99, 102, 241, 0.2);
  border-radius: var(--radius-full);
  font-size: var(--font-size-xs);
  font-weight: var(--font-weight-semibold);
  color: var(--color-primary-light);
}

/* ===============================================
   References Section
   =============================================== */
.references {
  padding: var(--spacing-5xl) 0;
  background: var(--color-bg-secondary);
}

.references-grid {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-2xl);
  margin-bottom: var(--spacing-4xl);
}

.ref-card {
  background: var(--color-bg-tertiary);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
  overflow: hidden;
  transition: all var(--transition-base);
}

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

.ref-card--featured {
  background: linear-gradient(135deg, rgba(99, 102, 241, 0.07) 0%, rgba(6, 182, 212, 0.04) 100%);
  border-color: rgba(99, 102, 241, 0.25);
}

.ref-card--featured:hover {
  border-color: rgba(99, 102, 241, 0.45);
}

.ref-card-inner {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0;
  align-items: stretch;
  min-height: 600px;
  height: 600px;
  overflow: hidden;
}

/* Browser mockup */
.ref-browser {
  display: flex;
  flex-direction: column;
  background: var(--color-bg-primary);
  border-right: 1px solid var(--color-border);
  overflow: hidden;
  min-height: 0;
  -ms-overflow-style: none;
  scrollbar-width: none;
}

.ref-browser::-webkit-scrollbar {
  display: none;
}

.ref-browser *::-webkit-scrollbar {
  display: none;
}

.ref-browser * {
  -ms-overflow-style: none;
  scrollbar-width: none;
}

.ref-browser-bar {
  display: flex;
  align-items: center;
  gap: var(--spacing-md);
  padding: var(--spacing-md) var(--spacing-lg);
  background: rgba(255, 255, 255, 0.04);
  border-bottom: 1px solid var(--color-border);
  flex-shrink: 0;
}

.ref-browser-dots {
  display: flex;
  gap: 6px;
  flex-shrink: 0;
}

.ref-browser-dots span {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: var(--color-border-light);
}

.ref-browser-dots span:nth-child(1) {
  background: #ff5f57;
}

.ref-browser-dots span:nth-child(2) {
  background: #febc2e;
}

.ref-browser-dots span:nth-child(3) {
  background: #28c840;
}

.ref-browser-url {
  flex: 1;
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 5px var(--spacing-md);
  background: rgba(255, 255, 255, 0.06);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  font-size: var(--font-size-xs);
  color: var(--color-text-tertiary);
  overflow: hidden;
}

.ref-browser-url span {
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.ref-browser-content {
  flex: 1;
  overflow: hidden;
  display: flex;
  flex-direction: column;
  min-height: 0;
}

.ref-browser-content::-webkit-scrollbar {
  display: none;
}

.ref-screenshot-wrap {
  flex: 1;
  overflow: hidden;
  position: relative;
  min-height: 0;
}

.ref-screenshot-wrap>.ref-carousel,
.ref-screenshot-wrap>img {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
}

.ref-screenshot-wrap--hidden {
  display: none;
}

/* Carousel inside dashboard tab */
.ref-carousel {
  position: relative;
  width: 100%;
  height: 100%;
  overflow: hidden;
}

.ref-carousel-track {
  width: 100%;
  height: 100%;
}

.ref-carousel-slide {
  display: none;
  position: relative;
  width: 100%;
  height: 100%;
  overflow: hidden;
}

.ref-carousel-slide--active {
  display: block;
}

.ref-carousel-slide .ref-screenshot {
  width: 100%;
  height: 100%;
  max-height: 100%;
  object-fit: contain;
  object-position: center center;
  display: block;
}

.ref-carousel-label {
  position: absolute;
  bottom: 8px;
  left: 50%;
  transform: translateX(-50%);
  background: rgba(0, 0, 0, 0.65);
  color: #fff;
  font-size: 10px;
  font-weight: 600;
  letter-spacing: 0.05em;
  padding: 3px 10px;
  border-radius: 20px;
  pointer-events: none;
  white-space: nowrap;
}

.ref-carousel-btn {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  background: rgba(255, 255, 255, 0.15);
  border: 1px solid rgba(255, 255, 255, 0.2);
  border-radius: 50%;
  width: 28px;
  height: 28px;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  color: #fff;
  transition: background 0.2s;
  z-index: 2;
}

.ref-carousel-btn:hover {
  background: rgba(255, 255, 255, 0.3);
}

.ref-carousel-btn--prev {
  left: 8px;
}

.ref-carousel-btn--next {
  right: 8px;
}

.ref-carousel-dots {
  position: absolute;
  bottom: 10px;
  right: 12px;
  display: flex;
  gap: 5px;
  z-index: 2;
}

.ref-carousel-dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  border: none;
  background: rgba(255, 255, 255, 0.35);
  cursor: pointer;
  padding: 0;
  transition: background 0.2s;
}

.ref-carousel-dot--active {
  background: #fff;
}


.ref-screenshot {
  width: 100%;
  height: 100%;
  object-fit: contain;
  object-position: center center;
  display: block;
}

/* Tab bar within browser */
.ref-browser-tabs {
  display: flex;
  gap: 4px;
  margin-left: auto;
}

.ref-tab {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  padding: 3px var(--spacing-sm);
  font-size: 11px;
  font-weight: var(--font-weight-medium);
  color: var(--color-text-tertiary);
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: all var(--transition-fast);
  font-family: var(--font-primary);
}

.ref-tab:hover {
  color: var(--color-text-secondary);
  background: rgba(255, 255, 255, 0.08);
}

.ref-tab.active {
  background: rgba(99, 102, 241, 0.2);
  border-color: rgba(99, 102, 241, 0.4);
  color: var(--color-primary-light);
}

/* Ref info panel */
.ref-info {
  padding: var(--spacing-2xl) var(--spacing-2xl);
  display: flex;
  flex-direction: column;
  justify-content: center;
  gap: var(--spacing-lg);
}

.ref-number {
  font-family: var(--font-heading);
  font-size: var(--font-size-5xl);
  font-weight: var(--font-weight-bold);
  color: rgba(99, 102, 241, 0.15);
  line-height: 1;
  user-select: none;
}

.ref-badge {
  display: inline-flex;
  align-items: center;
  gap: var(--spacing-sm);
  padding: var(--spacing-xs) var(--spacing-md);
  background: rgba(16, 185, 129, 0.12);
  border: 1px solid rgba(16, 185, 129, 0.3);
  border-radius: var(--radius-full);
  font-size: var(--font-size-xs);
  font-weight: var(--font-weight-semibold);
  color: var(--color-accent);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  width: fit-content;
}

.ref-badge::before {
  content: '★';
  font-size: 10px;
}

.ref-title {
  font-family: var(--font-heading);
  font-size: var(--font-size-3xl);
  font-weight: var(--font-weight-bold);
  color: var(--color-text-primary);
  line-height: var(--line-height-tight);
  margin: 0;
}

.ref-desc {
  font-size: var(--font-size-base);
  color: var(--color-text-secondary);
  line-height: var(--line-height-relaxed);
  margin: 0;
}

.ref-services {
  display: flex;
  flex-wrap: wrap;
  gap: var(--spacing-sm);
}

.ref-service-tag {
  padding: var(--spacing-xs) var(--spacing-md);
  background: rgba(99, 102, 241, 0.12);
  border: 1px solid rgba(99, 102, 241, 0.2);
  border-radius: var(--radius-full);
  font-size: var(--font-size-xs);
  font-weight: var(--font-weight-medium);
  color: var(--color-primary-light);
}

.ref-link {
  align-self: flex-start;
  margin-top: var(--spacing-sm);
}

.ref-link .btn-icon {
  width: 16px;
  height: 16px;
}

/* References CTA */
.references-cta {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--spacing-xl);
  text-align: center;
  padding: var(--spacing-3xl);
  background: var(--color-bg-tertiary);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
}

.references-cta p {
  font-size: var(--font-size-xl);
  font-weight: var(--font-weight-semibold);
  color: var(--color-text-primary);
}

/* Responsive */
@media (max-width: 900px) {
  .ref-card-inner {
    grid-template-columns: 1fr;
  }

  .ref-browser {
    border-right: none;
    border-bottom: 1px solid var(--color-border);
    max-height: 260px;
  }

  .ref-info {
    padding: var(--spacing-xl);
  }

  .ref-number {
    display: none;
  }
}

/* ===============================================
   Contact Section
   =============================================== */
.contact {
  padding: var(--spacing-5xl) 0;
  background: var(--color-bg-secondary);
}

.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--spacing-4xl);
  align-items: start;
}

.contact-info .section-title {
  margin-bottom: var(--spacing-lg);
}

.contact-info .section-description {
  margin-bottom: var(--spacing-2xl);
}

.contact-methods {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-md);
  margin-bottom: var(--spacing-2xl);
}

.contact-method {
  display: flex;
  align-items: center;
  gap: var(--spacing-md);
  padding: var(--spacing-md);
  background: var(--color-bg-tertiary);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  transition: all var(--transition-fast);
}

.contact-method:hover {
  border-color: var(--color-border-light);
  background: var(--color-bg-elevated);
}

.method-icon {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 44px;
  height: 44px;
  background: rgba(99, 102, 241, 0.1);
  border-radius: var(--radius-md);
}

.method-icon svg {
  width: 20px;
  height: 20px;
  stroke: var(--color-primary-light);
}

.method-details {
  display: flex;
  flex-direction: column;
}

.method-label {
  font-size: var(--font-size-xs);
  color: var(--color-text-tertiary);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.method-value {
  font-size: var(--font-size-base);
  font-weight: var(--font-weight-medium);
  color: var(--color-text-primary);
}

.contact-social {
  display: flex;
  gap: var(--spacing-sm);
}

.social-link {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 44px;
  height: 44px;
  background: var(--color-bg-tertiary);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  transition: all var(--transition-fast);
}

.social-link:hover {
  background: var(--color-primary);
  border-color: var(--color-primary);
}

.social-link svg {
  width: 20px;
  height: 20px;
}

/* Contact Form */
.contact-form-wrapper {
  padding: var(--spacing-2xl);
  background: var(--color-bg-tertiary);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-xl);
}

.contact-form {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-lg);
}

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--spacing-md);
}

.form-group {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-sm);
}

.form-group label {
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-medium);
  color: var(--color-text-secondary);
}

.form-group input,
.form-group select,
.form-group textarea {
  width: 100%;
  padding: var(--spacing-md);
  background: var(--color-bg-secondary);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  color: var(--color-text-primary);
  transition: all var(--transition-fast);
}

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

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
  outline: none;
  border-color: var(--color-border-focus);
  box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.1);
}

.form-group select {
  appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' fill='%2394a3b8' viewBox='0 0 16 16'%3E%3Cpath d='M8 11L3 6h10l-5 5z'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right var(--spacing-md) center;
  padding-right: var(--spacing-2xl);
}

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

/* ===============================================
   Footer
   =============================================== */
.footer {
  padding: var(--spacing-4xl) 0 var(--spacing-xl);
  background: var(--color-bg-primary);
  border-top: 1px solid var(--color-border);
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr repeat(3, 1fr);
  gap: var(--spacing-3xl);
  margin-bottom: var(--spacing-3xl);
}

.footer-brand .logo {
  margin-bottom: var(--spacing-md);
}

.footer-tagline {
  font-size: var(--font-size-sm);
  color: var(--color-text-tertiary);
  max-width: 280px;
}

.footer-links h4,
.footer-contact h4 {
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-semibold);
  color: var(--color-text-primary);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-bottom: var(--spacing-lg);
}

.footer-links ul {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-sm);
}

.footer-links a {
  font-size: var(--font-size-sm);
  color: var(--color-text-tertiary);
  transition: color var(--transition-fast);
}

.footer-links a:hover {
  color: var(--color-primary-light);
}

.footer-contact p {
  font-size: var(--font-size-sm);
  color: var(--color-text-tertiary);
  line-height: var(--line-height-relaxed);
}

.footer-contact a {
  color: var(--color-text-tertiary);
}

.footer-contact a:hover {
  color: var(--color-primary-light);
}

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

.footer-bottom p {
  font-size: var(--font-size-sm);
  color: var(--color-text-muted);
}

.footer-legal {
  display: flex;
  gap: var(--spacing-xl);
}

.footer-legal a {
  font-size: var(--font-size-sm);
  color: var(--color-text-muted);
}

.footer-legal a:hover {
  color: var(--color-text-secondary);
}

/* ===============================================
   Responsive Design
   =============================================== */
@media (max-width: 1024px) {
  .expertise-content {
    grid-template-columns: 1fr;
    gap: var(--spacing-3xl);
  }

  .about-cards {
    grid-template-columns: 1fr;
  }

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

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

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

  .nav {
    position: fixed;
    top: var(--header-height);
    left: 0;
    right: 0;
    bottom: 0;
    background: var(--color-bg-primary);
    padding: var(--spacing-xl);
    opacity: 0;
    visibility: hidden;
    transform: translateY(-20px);
    transition: all var(--transition-base);
  }

  .nav.active {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
  }

  .nav-list {
    flex-direction: column;
    align-items: stretch;
    gap: var(--spacing-sm);
  }

  .nav-link {
    padding: var(--spacing-md);
    font-size: var(--font-size-lg);
    justify-content: center;
  }

  .mobile-toggle {
    display: flex;
  }

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

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

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

  .hero-metrics {
    flex-direction: column;
    gap: var(--spacing-lg);
  }

  .metric-divider {
    width: 60px;
    height: 1px;
  }

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

  .footer-tagline {
    max-width: none;
  }

  .footer-bottom {
    flex-direction: column;
    gap: var(--spacing-md);
  }

  .footer-legal {
    flex-wrap: wrap;
    justify-content: center;
  }
}

@media (max-width: 480px) {
  .hero-title {
    font-size: var(--font-size-3xl);
  }

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

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

  .trust-logos {
    gap: var(--spacing-lg);
  }

  .trust-logo {
    font-size: var(--font-size-base);
  }
}

/* ===============================================
   Animations
   =============================================== */
@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(30px);
  }

  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.animate-fadeInUp {
  animation: fadeInUp 0.6s ease forwards;
}

.delay-100 {
  animation-delay: 100ms;
}

.delay-200 {
  animation-delay: 200ms;
}

.delay-300 {
  animation-delay: 300ms;
}

.delay-400 {
  animation-delay: 400ms;
}

.delay-500 {
  animation-delay: 500ms;
}