:root {
  /* Light theme colors */
  --primary: #0b5fff;
  --primary-dark: #0047cc;
  --secondary: #667eea;
  --accent: #00b894;
  --success: #00b894;
  --warning: #fdcb6e;
  --danger: #d63031;
  --info: #0984e3;
  
  /* Surface colors */
  --surface: #ffffff;
  --surface-secondary: #f8fafc;
  --surface-tertiary: #f1f5f9;
  
  /* Text colors */
  --text-primary: #0f172a;
  --text-secondary: #475569;
  --text-tertiary: #64748b;
  
  /* Border colors */
  --border: #e2e8f0;
  --border-light: #f1f5f9;
  
  /* Shadows */
  --shadow-sm: 0 2px 4px rgba(11, 95, 255, 0.05);
  --shadow: 0 10px 40px rgba(11, 95, 255, 0.1);
  --shadow-lg: 0 20px 60px rgba(11, 95, 255, 0.15);
  --shadow-xl: 0 25px 80px rgba(11, 95, 255, 0.2);
  
  /* Border radius */
  --radius-sm: 8px;
  --radius: 16px;
  --radius-lg: 24px;
  --radius-xl: 32px;
  
  /* Spacing */
  --spacing-xs: 0.25rem;
  --spacing-sm: 0.5rem;
  --spacing-md: 1rem;
  --spacing-lg: 2rem;
  --spacing-xl: 4rem;
  --spacing-xxl: 8rem;
  
  /* Transitions */
  --transition-fast: 150ms ease;
  --transition: 300ms ease;
  --transition-slow: 500ms ease;
}

[data-theme="dark"] {
  /* Dark theme colors */
  --primary: #5ca9ff;
  --primary-dark: #3d8bff;
  --secondary: #a5b4fc;
  --accent: #00d8a7;
  --success: #00d8a7;
  --warning: #ffeaa7;
  --danger: #ff7675;
  --info: #74b9ff;
  
  /* Surface colors */
  --surface: #0f1724;
  --surface-secondary: #1e293b;
  --surface-tertiary: #2d3748;
  
  /* Text colors */
  --text-primary: #f1f5f9;
  --text-secondary: #cbd5e1;
  --text-tertiary: #94a3b8;
  
  /* Border colors */
  --border: #334155;
  --border-light: #475569;
  
  /* Shadows */
  --shadow-sm: 0 2px 4px rgba(0, 0, 0, 0.2);
  --shadow: 0 10px 40px rgba(0, 0, 0, 0.3);
  --shadow-lg: 0 20px 60px rgba(0, 0, 0, 0.4);
  --shadow-xl: 0 25px 80px rgba(0, 0, 0, 0.5);
}

/* Base styles */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  scroll-padding-top: 80px;
}

body {
  font-family: 'Inter', system-ui, -apple-system, sans-serif;
  background: var(--surface);
  color: var(--text-primary);
  line-height: 1.6;
  transition: background-color var(--transition), color var(--transition);
  overflow-x: hidden;
}

/* Typography */
h1, h2, h3, h4, h5, h6 {
  font-weight: 700;
  line-height: 1.2;
  margin-bottom: 1rem;
}

.text-gradient {
  background: linear-gradient(135deg, var(--primary) 0%, var(--secondary) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.section-title {
  font-size: 2.5rem;
  margin-bottom: 1rem;
}

.section-subtitle {
  color: var(--text-secondary);
  font-size: 1.125rem;
  max-width: 600px;
}

.lead {
  font-size: 1.125rem;
  color: var(--text-secondary);
}

/* Navigation */
.navbar-glass {
  background: rgba(var(--surface-rgb, 255, 255, 255), 0.9);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--border-light);
  padding: 1rem 0;
  transition: all var(--transition);
}

[data-theme="dark"] .navbar-glass {
  background: rgba(var(--surface-rgb, 15, 23, 36), 0.9);
}

/* Ensure navbar text/icons follow theme colors (fix dark-mode visibility) */
.navbar-glass,
.navbar-glass .navbar-brand,
.navbar-glass .nav-link,
.navbar-glass .btn,
.navbar-glass .dropdown-toggle,
.navbar-glass .btn-icon {
  color: var(--text-primary) !important;
}

.navbar-glass .btn-icon {
  background: var(--surface) !important;
  border-color: var(--border) !important;
  color: var(--text-primary) !important;
}

.navbar-glass .nav-link:hover,
.navbar-glass .dropdown-item:hover {
  color: var(--primary) !important;
}

.navbar-brand {
  font-weight: 800;
  font-size: 1.5rem;
}

.nav-link {
  font-weight: 500;
  padding: 0.5rem 1rem !important;
  transition: color var(--transition);
}

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

.btn-icon {
  width: 40px;
  height: 40px;
  padding: 0;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius);
  border: 1px solid var(--border);
  background: var(--surface);
  color: var(--text-primary);
  transition: all var(--transition);
}

.btn-icon:hover {
  background: var(--surface-secondary);
  border-color: var(--primary);
  transform: translateY(-2px);
}

/* Theme toggle */
.theme-switch-wrapper {
  position: relative;
}

.theme-icon {
  width: 20px;
  height: 20px;
  transition: transform var(--transition);
}

.sun-icon {
  display: none;
}

[data-theme="dark"] .sun-icon {
  display: block;
}

[data-theme="dark"] .moon-icon {
  display: none;
}

/* Buttons */
.btn-gradient {
  background: linear-gradient(135deg, var(--primary) 0%, var(--secondary) 100%);
  border: none;
  color: white;
  position: relative;
  overflow: hidden;
  z-index: 1;
}

.btn-gradient::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: linear-gradient(135deg, var(--primary-dark) 0%, var(--primary) 100%);
  opacity: 0;
  transition: opacity var(--transition);
  z-index: -1;
}

.btn-gradient:hover::before {
  opacity: 1;
}

.btn-outline-primary {
  border: 2px solid var(--primary);
  color: var(--primary);
  background: transparent;
}

.btn-outline-primary:hover {
  background: var(--primary);
  color: white;
  transform: translateY(-2px);
  box-shadow: var(--shadow);
}

/* Hero section */
.hero-section {
  padding-top: 120px;
  padding-bottom: 80px;
  position: relative;
  overflow: hidden;
}

.hero-section::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: radial-gradient(circle at 20% 50%, rgba(11, 95, 255, 0.1) 0%, transparent 50%),
              radial-gradient(circle at 80% 20%, rgba(102, 126, 234, 0.1) 0%, transparent 50%);
  pointer-events: none;
}

.hero-content {
  position: relative;
  z-index: 2;
}

.hero-visual {
  position: relative;
  height: 500px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.floating-element {
  position: absolute;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--primary) 0%, var(--secondary) 100%);
  opacity: 0.1;
  animation: float 6s ease-in-out infinite;
}

.el-1 {
  width: 100px;
  height: 100px;
  top: 10%;
  left: 10%;
  animation-delay: 0s;
}

.el-2 {
  width: 150px;
  height: 150px;
  bottom: 20%;
  right: 10%;
  animation-delay: 2s;
}

.el-3 {
  width: 80px;
  height: 80px;
  top: 50%;
  left: 5%;
  animation-delay: 4s;
}

@keyframes float {
  0%, 100% {
    transform: translateY(0) rotate(0deg);
  }
  50% {
    transform: translateY(-20px) rotate(180deg);
  }
}

.hero-visual-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 1.5rem;
  box-shadow: var(--shadow-xl);
  width: 100%;
  max-width: 400px;
  position: relative;
  z-index: 2;
}

.card-header {
  display: flex;
  align-items: center;
  margin-bottom: 1.5rem;
}

.dots {
  display: flex;
  gap: 0.5rem;
}

.dot {
  width: 12px;
  height: 12px;
  border-radius: 50%;
}

.server-rack {
  background: var(--surface-secondary);
  border-radius: var(--radius);
  padding: 1rem;
  margin-bottom: 1.5rem;
}

.server-unit {
  height: 24px;
  border-radius: var(--radius-sm);
  margin-bottom: 0.5rem;
  transition: transform var(--transition);
}

.server-unit:hover {
  transform: scaleX(1.05);
}

.server-unit.primary {
  background: linear-gradient(90deg, var(--primary) 0%, var(--secondary) 100%);
  width: 90%;
}

.server-unit.secondary {
  background: linear-gradient(90deg, var(--secondary) 0%, var(--accent) 100%);
  width: 80%;
}

.server-unit.success {
  background: var(--success);
  width: 85%;
}

.server-unit.warning {
  background: var(--warning);
  width: 75%;
}

.data-flow {
  position: relative;
  height: 60px;
}

.flow-line {
  position: absolute;
  height: 2px;
  background: linear-gradient(90deg, transparent, var(--primary), transparent);
  animation: flow 2s linear infinite;
}

.flow-line:nth-child(1) {
  top: 0;
  width: 100%;
  animation-delay: 0s;
}

.flow-line:nth-child(2) {
  top: 20px;
  width: 80%;
  left: 10%;
  animation-delay: 0.5s;
}

.flow-line:nth-child(3) {
  top: 40px;
  width: 60%;
  left: 20%;
  animation-delay: 1s;
}

@keyframes flow {
  0% {
    background-position: -100% 0;
  }
  100% {
    background-position: 200% 0;
  }
}

.stat {
  text-align: center;
}

.stat-number {
  font-size: 2rem;
  font-weight: 800;
  color: var(--primary);
  line-height: 1;
}

.stat-label {
  color: var(--text-secondary);
  font-size: 0.875rem;
  margin-top: 0.25rem;
}

/* Services section */
.services-section {
  background: var(--surface-secondary);
  position: relative;
}

.service-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 2rem;
  transition: all var(--transition);
  height: 100%;
  position: relative;
  overflow: hidden;
}

.service-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
  background: linear-gradient(90deg, var(--primary) 0%, var(--secondary) 100%);
  opacity: 0;
  transition: opacity var(--transition);
}

.service-card:hover {
  transform: translateY(-8px);
  box-shadow: var(--shadow-xl);
  border-color: var(--primary);
}

.service-card:hover::before {
  opacity: 1;
}

.service-icon {
  color: var(--primary);
  width: 56px;
  height: 56px;
}

.service-features {
  list-style: none;
  padding: 0;
  margin: 0;
}

.service-features li {
  padding: 0.5rem 0;
  color: var(--text-secondary);
  position: relative;
  padding-left: 1.5rem;
}

.service-features li::before {
  content: '✓';
  position: absolute;
  left: 0;
  color: var(--primary);
  font-weight: bold;
}

/* About section */
.about-section {
  position: relative;
}

.about-features {
  display: grid;
  gap: 1.5rem;
  margin-top: 2rem;
}

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

.feature-icon {
  width: 32px;
  height: 32px;
  background: linear-gradient(135deg, var(--primary) 0%, var(--secondary) 100%);
  border-radius: var(--radius);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.feature-icon svg {
  width: 16px;
  height: 16px;
}

.certification-badge {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 1.5rem;
  display: flex;
  align-items: center;
  gap: 1rem;
  margin-bottom: 2rem;
  box-shadow: var(--shadow);
}

.cert-icon {
  width: 60px;
  height: 60px;
  background: linear-gradient(135deg, var(--primary) 0%, var(--secondary) 100%);
  border-radius: var(--radius);
  display: flex;
  align-items: center;
  justify-content: center;
  color: white;
  font-weight: 800;
  font-size: 1.25rem;
}

.experience-timeline {
  position: relative;
  padding-left: 2rem;
}

.experience-timeline::before {
  content: '';
  position: absolute;
  left: 9px;
  top: 0;
  bottom: 0;
  width: 2px;
  background: linear-gradient(to bottom, var(--primary), var(--secondary));
  opacity: 0.3;
}

.timeline-item {
  position: relative;
  padding-bottom: 2rem;
}

.timeline-item:last-child {
  padding-bottom: 0;
}

.timeline-year {
  position: absolute;
  left: -2rem;
  top: 0;
  width: 40px;
  height: 40px;
  background: var(--surface);
  border: 2px solid var(--primary);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  color: var(--primary);
  z-index: 1;
}

/* Clients section */
.clients-section {
  background: var(--surface-tertiary);
}

.client-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.5rem;
  text-align: center;
  transition: all var(--transition);
  height: 100%;
}

.client-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow);
  border-color: var(--primary);
}

.client-icon {
  width: 64px;
  height: 64px;
  border-radius: var(--radius);
  margin: 0 auto 1rem;
  position: relative;
}

.client-icon::before {
  content: '';
  position: absolute;
  inset: 0;
  border-radius: inherit;
  opacity: 0.1;
}

.client-icon.banking::before {
  background: var(--primary);
}

.client-icon.retail::before {
  background: var(--secondary);
}

.client-icon.healthcare::before {
  background: var(--success);
}

.client-icon.education::before {
  background: var(--info);
}

.testimonial-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 2rem;
  height: 100%;
  position: relative;
}

.testimonial-card::before {
  content: '"';
  position: absolute;
  top: 1rem;
  right: 1rem;
  font-size: 4rem;
  color: var(--primary);
  opacity: 0.1;
  font-family: Georgia, serif;
  line-height: 1;
}

.testimonial-content {
  margin-bottom: 1.5rem;
}

.testimonial-author {
  border-top: 1px solid var(--border);
  padding-top: 1rem;
}

.author-name {
  font-weight: 600;
  color: var(--text-primary);
}

.author-role {
  color: var(--text-secondary);
  font-size: 0.875rem;
}

/* CTA section */
.cta-section {
  background: linear-gradient(135deg, var(--primary) 0%, var(--secondary) 100%);
  position: relative;
  overflow: hidden;
}

.cta-section::before {
  content: '';
  position: absolute;
  top: -50%;
  left: -50%;
  right: -50%;
  bottom: -50%;
  background: radial-gradient(circle at center, rgba(255, 255, 255, 0.1) 0%, transparent 70%);
  animation: pulse 10s ease-in-out infinite;
}

@keyframes pulse {
  0%, 100% {
    transform: scale(1);
    opacity: 0.5;
  }
  50% {
    transform: scale(1.1);
    opacity: 0.8;
  }
}

/* Contact section */
.contact-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 2rem;
  box-shadow: var(--shadow-xl);
}

.contact-info {
  padding-right: 2rem;
}

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

.contact-icon {
  width: 40px;
  height: 40px;
  background: var(--surface-secondary);
  border-radius: var(--radius);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  color: var(--primary);
}

.contact-link {
  color: var(--text-primary);
  text-decoration: none;
  transition: color var(--transition);
}

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

.form-group {
  margin-bottom: 1rem;
}

.form-label {
  font-weight: 600;
  margin-bottom: 0.5rem;
  color: var(--text-primary);
}

.form-control, .form-select {
  background: var(--surface);
  border: 1px solid var(--border);
  color: var(--text-primary);
  padding: 0.75rem 1rem;
  border-radius: var(--radius);
  transition: all var(--transition);
}

.form-control:focus, .form-select:focus {
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(11, 95, 255, 0.1);
  outline: none;
}

/* Footer */
.footer {
  background: var(--surface-secondary);
  color: var(--text-secondary);
}

.footer-heading {
  color: var(--text-primary);
  font-weight: 600;
  margin-bottom: 1.5rem;
}

.footer-links {
  list-style: none;
  padding: 0;
}

.footer-links li {
  margin-bottom: 0.75rem;
}

.footer-links a {
  color: var(--text-secondary);
  text-decoration: none;
  transition: color var(--transition);
}

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

.social-links {
  display: flex;
  gap: 1rem;
  margin-top: 1.5rem;
}

.social-link {
  width: 40px;
  height: 40px;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--text-secondary);
  transition: all var(--transition);
}

.social-link:hover {
  background: var(--primary);
  color: white;
  border-color: var(--primary);
  transform: translateY(-2px);
}

.newsletter-form .input-group {
  border-radius: var(--radius);
  overflow: hidden;
}

/* Skip link */
.skip-link {
  position: absolute;
  top: -40px;
  left: 10px;
  background: var(--primary);
  color: white;
  padding: 10px 16px;
  text-decoration: none;
  border-radius: var(--radius);
  z-index: 9999;
  transition: top var(--transition);
}

.skip-link:focus {
  top: 10px;
}

/* Responsive design */
@media (max-width: 768px) {
  .section-title {
    font-size: 2rem;
  }
  
  .hero-section {
    padding-top: 100px;
    padding-bottom: 60px;
  }
  
  .hero-visual {
    height: 300px;
    margin-top: 2rem;
  }
  
  .contact-info {
    padding-right: 0;
    margin-bottom: 2rem;
  }
  
  .navbar-collapse {
    padding: 1rem;
    background: var(--surface);
    border-radius: var(--radius);
    margin-top: 1rem;
    box-shadow: var(--shadow);
  }
}

/* Print styles */
@media print {
  .navbar,
  .theme-switch-wrapper,
  .social-links,
  .newsletter-form,
  .btn {
    display: none !important;
  }
  
  .hero-section {
    padding-top: 0;
  }
  
  a {
    text-decoration: none;
    color: inherit;
  }
  
  .contact-link::after {
    content: " (" attr(href) ")";
    font-size: 0.875rem;
    opacity: 0.7;
  }
}

/* Reduced motion */
@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
}

/* RTL support */
[dir="rtl"] {
  .experience-timeline {
    padding-left: 0;
    padding-right: 2rem;
  }
  
  .experience-timeline::before {
    left: auto;
    right: 9px;
  }
  
  .timeline-year {
    left: auto;
    right: -2rem;
  }
  
  .service-features li {
    padding-left: 0;
    padding-right: 1.5rem;
  }
  
  .service-features li::before {
    left: auto;
    right: 0;
  }
  
  .contact-info {
    padding-right: 0;
    padding-left: 2rem;
  }
}

/* Improve section spacing (vertical rhythm) */
section {
  margin: var(--spacing-xl) 0;
  padding-top: var(--spacing-lg);
  padding-bottom: var(--spacing-lg);
}

/* Reduce vertical spacing on small screens */
@media (max-width: 768px) {
  section {
    margin: var(--spacing-lg) 0;
    padding-top: var(--spacing-md);
    padding-bottom: var(--spacing-md);
  }
}

/* Dark-mode fixes for elements using Bootstrap's bg-light */
[data-theme="dark"] .bg-light {
  background: var(--surface-secondary) !important;
  color: var(--text-primary) !important;
}

/* Ensure clients section text is readable in dark mode */
[data-theme="dark"] .clients-section,
[data-theme="dark"] .clients-section .section-title,
[data-theme="dark"] .clients-section .section-subtitle,
[data-theme="dark"] .clients-section .client-card,
[data-theme="dark"] .clients-section .client-card h5,
[data-theme="dark"] .clients-section .client-card p {
  color: var(--text-primary) !important;
}

[data-theme="dark"] .clients-section .client-card {
  background: var(--surface) !important;
  border-color: var(--border) !important;
}