:root {
  /* Colors */
  --color-dark-bg: #0a0e1a;
  --color-navy: #1a1f35;
  --color-navy-light: #252b45;
  --color-accent-blue: #3b82f6;
  --color-accent-purple: #8b5cf6;
  --color-text-primary: #f8fafc;
  --color-text-secondary: #cbd5e1;
  --color-text-muted: #94a3b8;
  --color-border: rgba(255, 255, 255, 0.1);
  --color-card-bg: rgba(26, 31, 53, 0.6);

  /* Gradients */
  --gradient-primary: linear-gradient(135deg, #3b82f6 0%, #8b5cf6 100%);
  --gradient-hover: linear-gradient(135deg, #4f95ff 0%, #9d6fff 100%);
  --gradient-subtle: linear-gradient(180deg, rgba(59, 130, 246, 0.1) 0%, rgba(139, 92, 246, 0.1) 100%);

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

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

  /* Border Radius */
  --radius-sm: 0.5rem;
  --radius-md: 1rem;
  --radius-lg: 1.5rem;

  /* Transitions */
  --transition-fast: 0.2s ease;
  --transition-normal: 0.3s ease;
  --transition-slow: 0.5s ease;

  /* Shadows */
  --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.1);
  --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.2);
  --shadow-lg: 0 8px 32px rgba(0, 0, 0, 0.3);
  --shadow-glow: 0 0 40px rgba(59, 130, 246, 0.3);
}

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

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

body {
  font-family: var(--font-body);
  background-color: var(--color-dark-bg);
  color: var(--color-text-primary);
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
}

/* Typography */
h1,
h2,
h3,
h4,
h5,
h6 {
  font-family: var(--font-heading);
  font-weight: 700;
  line-height: 1.2;
  margin-bottom: var(--spacing-md);
}

h1 {
  font-size: clamp(2.5rem, 5vw, 4rem);
  letter-spacing: -0.02em;
}

h2 {
  font-size: clamp(2rem, 4vw, 3rem);
  letter-spacing: -0.01em;
}

h3 {
  font-size: clamp(1.5rem, 3vw, 2rem);
}

h4 {
  font-size: 1.25rem;
}

p {
  margin-bottom: var(--spacing-md);
  color: var(--color-text-secondary);
  font-size: 1.125rem;
}

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

a:hover {
  color: var(--color-accent-purple);
}

/* Layout */
.container {
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 var(--spacing-lg);
}

.container-wide {
  max-width: 1400px;
}

section {
  padding: var(--spacing-3xl) 0;
  position: relative;
}

/* Header & Navigation */
header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  background: rgba(10, 14, 26, 0.8);
  backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--color-border);
  transition: all var(--transition-normal);
}

header.scrolled {
  background: rgba(10, 14, 26, 0.95);
  box-shadow: var(--shadow-md);
}

nav {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 2rem 0;
  min-height: 80px;
}

.logo {
  font-family: var(--font-heading);
  font-size: 1.5rem;
  font-weight: 700;
  background: var(--gradient-primary);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  letter-spacing: -0.02em;
}

.logo img {
  height: 24px;
  width: auto;
  display: block;
}

.nav-links {
  display: flex;
  gap: var(--spacing-lg);
  list-style: none;
}

.nav-links a {
  color: var(--color-text-secondary);
  font-weight: 500;
  transition: color var(--transition-fast);
  position: relative;
}

.nav-links a::after {
  content: '';
  position: absolute;
  bottom: -4px;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--gradient-primary);
  transition: width var(--transition-normal);
}

.nav-links a:hover,
.nav-links a.active {
  color: var(--color-text-primary);
}

.nav-links a:hover::after,
.nav-links a.active::after {
  width: 100%;
}

.mobile-menu-btn {
  display: none;
  background: none;
  border: none;
  color: var(--color-text-primary);
  font-size: 1.5rem;
  cursor: pointer;
  padding: var(--spacing-xs);
}

/* Hero Section */
.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  position: relative;
  overflow: hidden;
  padding-top: var(--spacing-3xl);
}

.hero-video-bg {
  position: absolute;
  top: 50%;
  left: 50%;
  min-width: 100%;
  min-height: 100%;
  width: auto;
  height: auto;
  transform: translate(-50%, -50%);
  z-index: 0;
  opacity: 0.15;
  object-fit: cover;
}

.hero::before {
  content: '';
  position: absolute;
  top: -50%;
  left: -50%;
  width: 200%;
  height: 200%;
  background: radial-gradient(circle, rgba(59, 130, 246, 0.1) 0%, transparent 70%);
  animation: rotate 30s linear infinite;
  z-index: 1;
}

.hero::after {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: linear-gradient(180deg, rgba(10, 14, 26, 0.3) 0%, rgba(10, 14, 26, 0.8) 100%);
  z-index: 1;
}

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

  to {
    transform: rotate(360deg);
  }
}

.hero-content {
  position: relative;
  z-index: 2;
  animation: fadeInUp 1s ease;
}

.hero h1 {
  margin-bottom: var(--spacing-md);
  background: linear-gradient(135deg, #f8fafc 0%, #cbd5e1 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero-subtitle {
  font-size: clamp(1.125rem, 2vw, 1.5rem);
  color: var(--color-text-secondary);
  max-width: 700px;
  margin: 0 auto var(--spacing-xl);
  line-height: 1.6;
}

/* Buttons */
.btn {
  display: inline-block;
  padding: 1rem 2rem;
  font-family: var(--font-heading);
  font-size: 1rem;
  font-weight: 600;
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: all var(--transition-normal);
  border: none;
  text-align: center;
  position: relative;
  overflow: hidden;
}

.btn-primary {
  background: var(--gradient-primary);
  color: white;
  box-shadow: 0 4px 20px rgba(59, 130, 246, 0.4);
}

.btn-primary:hover {
  background: var(--gradient-hover);
  transform: translateY(-2px);
  box-shadow: 0 8px 30px rgba(59, 130, 246, 0.5);
}

.btn-secondary {
  background: transparent;
  color: var(--color-text-primary);
  border: 2px solid var(--color-accent-blue);
}

.btn-secondary:hover {
  background: rgba(59, 130, 246, 0.1);
  border-color: var(--color-accent-purple);
}

/* Cards */
.card {
  background: var(--color-card-bg);
  backdrop-filter: blur(10px);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--spacing-xl);
  transition: all var(--transition-normal);
  position: relative;
  overflow: hidden;
}

.card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: var(--gradient-primary);
  transform: scaleX(0);
  transition: transform var(--transition-normal);
}

.card:hover {
  transform: translateY(-8px);
  border-color: rgba(59, 130, 246, 0.5);
  box-shadow: var(--shadow-lg);
}

.card:hover::before {
  transform: scaleX(1);
}

.card-icon {
  width: 240px;
  height: 240px;
  margin-bottom: var(--spacing-md);
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--gradient-subtle);
  overflow: hidden;
}

.card-icon img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

/* Larger icons for services page */
.card-icon.large {
  width: 400px;
  height: 400px;
}

.card-icon.large img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.card h3 {
  margin-bottom: var(--spacing-sm);
}

.card p {
  font-size: 1rem;
  color: var(--color-text-muted);
}

/* Grid Layouts */
.grid {
  display: grid;
  gap: var(--spacing-xl);
}

.grid-2 {
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
}

.grid-3 {
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
}

/* Sections */
.section-header {
  text-align: center;
  max-width: 800px;
  margin: 0 auto var(--spacing-2xl);
}

.section-label {
  display: inline-block;
  padding: 0.5rem 1rem;
  background: var(--gradient-subtle);
  border: 1px solid var(--color-border);
  border-radius: 2rem;
  font-size: 0.875rem;
  font-weight: 600;
  color: var(--color-accent-blue);
  margin-bottom: var(--spacing-md);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

/* Process Steps */
.process-grid {
  display: grid;
  gap: var(--spacing-lg);
  counter-reset: step;
}

.process-step {
  position: relative;
  padding-left: var(--spacing-xl);
  counter-increment: step;
}

.process-step::before {
  content: counter(step);
  position: absolute;
  left: 0;
  top: 0;
  width: 40px;
  height: 40px;
  background: var(--gradient-primary);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-heading);
  font-weight: 700;
  font-size: 1.25rem;
}

.process-step h3 {
  margin-top: 0;
  color: var(--color-text-primary);
}

/* Contact Form */
.contact-form {
  max-width: 600px;
  margin: 0 auto;
}

.form-group {
  margin-bottom: var(--spacing-lg);
}

.form-group label {
  display: block;
  margin-bottom: var(--spacing-xs);
  font-weight: 500;
  color: var(--color-text-primary);
}

.form-group input,
.form-group textarea {
  width: 100%;
  padding: 1rem;
  background: var(--color-navy-light);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  color: var(--color-text-primary);
  font-family: var(--font-body);
  font-size: 1rem;
  transition: all var(--transition-fast);
}

.form-group input:focus,
.form-group textarea:focus {
  outline: none;
  border-color: var(--color-accent-blue);
  box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.1);
}

.form-group textarea {
  resize: vertical;
  min-height: 150px;
}

.form-error {
  color: #ef4444;
  font-size: 0.875rem;
  margin-top: var(--spacing-xs);
  display: none;
}

.form-success {
  background: rgba(34, 197, 94, 0.1);
  border: 1px solid rgba(34, 197, 94, 0.3);
  color: #22c55e;
  padding: var(--spacing-md);
  border-radius: var(--radius-sm);
  margin-bottom: var(--spacing-lg);
  display: none;
}

/* Footer */
footer {
  background: var(--color-navy);
  border-top: 1px solid var(--color-border);
  padding: var(--spacing-2xl) 0 var(--spacing-xl);
  margin-top: var(--spacing-3xl);
}

.footer-content {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: var(--spacing-lg);
}

.footer-links {
  display: flex;
  gap: var(--spacing-lg);
  list-style: none;
}

.footer-links a {
  color: var(--color-text-primary);
  transition: color var(--transition-fast);
}

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

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

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

.fade-in {
  opacity: 0;
  transform: translateY(30px);
  transition: all 0.6s ease;
}

.fade-in.visible {
  opacity: 1;
  transform: translateY(0);
}

/* Utility Classes */
.text-center {
  text-align: center;
}

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

.mb-sm {
  margin-bottom: var(--spacing-sm);
}

.mb-md {
  margin-bottom: var(--spacing-md);
}

.mb-lg {
  margin-bottom: var(--spacing-lg);
}

.mb-xl {
  margin-bottom: var(--spacing-xl);
}

.mt-sm {
  margin-top: var(--spacing-sm);
}

.mt-md {
  margin-top: var(--spacing-md);
}

.mt-lg {
  margin-top: var(--spacing-lg);
}

.mt-xl {
  margin-top: var(--spacing-xl);
}

/* Chat Interface Styles */
.chat-section {
  min-height: 100vh;
  padding-top: 120px;
  padding-bottom: var(--spacing-xl);
  display: flex;
  align-items: center;
}

.chat-wrapper {
  max-width: 700px;
  margin: 0 auto;
  background: var(--color-card-bg);
  backdrop-filter: blur(20px);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  display: flex;
  flex-direction: column;
  height: 70vh;
  min-height: 500px;
  max-height: 700px;
  box-shadow: var(--shadow-lg), var(--shadow-glow);
}

.chat-header {
  background: linear-gradient(135deg, var(--color-navy) 0%, var(--color-navy-light) 100%);
  padding: var(--spacing-md) var(--spacing-lg);
  border-bottom: 1px solid var(--color-border);
}

.chat-header-info {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
}

.chat-avatar {
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background: var(--gradient-primary);
  display: flex;
  align-items: center;
  justify-content: center;
  color: white;
}

.chat-avatar svg {
  width: 24px;
  height: 24px;
}

.chat-header-text h3 {
  margin: 0;
  font-size: 1.125rem;
  color: var(--color-text-primary);
}

.chat-status {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 0.875rem;
  color: var(--color-text-muted);
}

.status-dot {
  width: 8px;
  height: 8px;
  background: #22c55e;
  border-radius: 50%;
  animation: pulse 2s infinite;
}

@keyframes pulse {

  0%,
  100% {
    opacity: 1;
  }

  50% {
    opacity: 0.5;
  }
}

/* Chat Messages */
.chat-messages {
  flex: 1;
  overflow-y: auto;
  padding: var(--spacing-lg);
  display: flex;
  flex-direction: column;
  gap: var(--spacing-md);
}

.chat-messages::-webkit-scrollbar {
  width: 6px;
}

.chat-messages::-webkit-scrollbar-track {
  background: transparent;
}

.chat-messages::-webkit-scrollbar-thumb {
  background: var(--color-border);
  border-radius: 3px;
}

.chat-message {
  max-width: 85%;
  animation: messageSlide 0.3s ease;
}

@keyframes messageSlide {
  from {
    opacity: 0;
    transform: translateY(10px);
  }

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

.chat-message.bot {
  align-self: flex-start;
}

.chat-message.user {
  align-self: flex-end;
}

.message-bubble {
  padding: var(--spacing-sm) var(--spacing-md);
  border-radius: var(--radius-md);
  font-size: 1rem;
  line-height: 1.5;
}

.chat-message.bot .message-bubble {
  background: var(--color-navy-light);
  border: 1px solid var(--color-border);
  color: var(--color-text-secondary);
  border-bottom-left-radius: 4px;
}

.chat-message.user .message-bubble {
  background: var(--gradient-primary);
  color: white;
  border-bottom-right-radius: 4px;
}

.message-time {
  font-size: 0.75rem;
  color: var(--color-text-muted);
  margin-top: 4px;
  padding: 0 4px;
}

.chat-message.user .message-time {
  text-align: right;
}

/* Typing Indicator */
.typing-indicator {
  display: flex;
  gap: 4px;
  padding: var(--spacing-sm) var(--spacing-md);
  background: var(--color-navy-light);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  border-bottom-left-radius: 4px;
  width: fit-content;
}

.typing-indicator span {
  width: 8px;
  height: 8px;
  background: var(--color-text-muted);
  border-radius: 50%;
  animation: typingBounce 1.4s infinite ease-in-out;
}

.typing-indicator span:nth-child(1) {
  animation-delay: 0s;
}

.typing-indicator span:nth-child(2) {
  animation-delay: 0.2s;
}

.typing-indicator span:nth-child(3) {
  animation-delay: 0.4s;
}

@keyframes typingBounce {

  0%,
  60%,
  100% {
    transform: translateY(0);
  }

  30% {
    transform: translateY(-4px);
  }
}

/* Quick Replies */
.quick-replies {
  display: flex;
  flex-wrap: wrap;
  gap: var(--spacing-xs);
  padding: 0 var(--spacing-lg) var(--spacing-sm);
}

.quick-replies:empty {
  display: none;
}

.quick-reply-btn {
  padding: 8px 16px;
  background: transparent;
  border: 1px solid var(--color-accent-blue);
  border-radius: 20px;
  color: var(--color-accent-blue);
  font-family: var(--font-body);
  font-size: 0.875rem;
  font-weight: 500;
  cursor: pointer;
  transition: all var(--transition-fast);
}

.quick-reply-btn:hover {
  background: rgba(59, 130, 246, 0.1);
  border-color: var(--color-accent-purple);
  color: var(--color-accent-purple);
  transform: translateY(-1px);
}

/* Chat Input */
.chat-input-container {
  display: flex;
  gap: var(--spacing-sm);
  padding: var(--spacing-md) var(--spacing-lg);
  background: var(--color-navy);
  border-top: 1px solid var(--color-border);
}

.chat-input {
  flex: 1;
  padding: 12px 16px;
  background: var(--color-navy-light);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  color: var(--color-text-primary);
  font-family: var(--font-body);
  font-size: 1rem;
  transition: all var(--transition-fast);
}

.chat-input:focus {
  outline: none;
  border-color: var(--color-accent-blue);
  box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.1);
}

.chat-input::placeholder {
  color: var(--color-text-muted);
}

.chat-send-btn {
  width: 48px;
  height: 48px;
  background: var(--gradient-primary);
  border: none;
  border-radius: var(--radius-sm);
  color: white;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all var(--transition-fast);
  flex-shrink: 0;
}

.chat-send-btn:hover {
  background: var(--gradient-hover);
  transform: scale(1.05);
  box-shadow: 0 4px 20px rgba(59, 130, 246, 0.4);
}

.chat-send-btn svg {
  width: 20px;
  height: 20px;
}

.chat-privacy-notice {
  font-size: 0.75rem;
  color: var(--color-text-muted);
  text-align: center;
  margin: 0;
  padding: 8px var(--spacing-lg);
  opacity: 0.7;
}

/* Responsive Design */
@media (max-width: 768px) {
  :root {
    --spacing-3xl: 4rem;
    --spacing-2xl: 3rem;
    --spacing-xl: 2rem;
  }

  .nav-links {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background: rgba(10, 14, 26, 0.98);
    backdrop-filter: blur(20px);
    flex-direction: column;
    padding: var(--spacing-lg);
    border-bottom: 1px solid var(--color-border);
  }

  .nav-links.active {
    display: flex;
  }

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

  .chat-section {
    padding-top: 100px;
  }

  .chat-wrapper {
    height: calc(100vh - 180px);
    max-height: none;
    border-radius: var(--radius-md);
  }

  .chat-messages {
    padding: var(--spacing-md);
  }

  .chat-input-container {
    padding: var(--spacing-sm) var(--spacing-md);
  }

  .hero {
    min-height: 80vh;
  }

  .grid-2,
  .grid-3 {
    grid-template-columns: 1fr;
  }

  .footer-content {
    flex-direction: column;
    text-align: center;
  }
}

@media (max-width: 480px) {
  .container {
    padding: 0 var(--spacing-md);
  }

  .card {
    padding: var(--spacing-lg);
  }
}