:root {
  /* Colors - Modern Tech Blue/Teal Theme */
  --primary: #0066cc;
  --primary-dark: #004d99;
  --primary-light: #3399ff;
  --secondary: #00b8d4;
  --secondary-dark: #0097a7;
  --accent: #00e676;

  /* Neutrals */
  --gray-50: #f8f9fa;
  --gray-100: #e9ecef;
  --gray-200: #dee2e6;
  --gray-300: #ced4da;
  --gray-400: #adb5bd;
  --gray-500: #6c757d;
  --gray-600: #495057;
  --gray-700: #343a40;
  --gray-800: #212529;
  --gray-900: #0d0f12;

  /* Semantic Colors */
  --text-primary: #1a1a1a;
  --text-secondary: #4a5568;
  --text-muted: #718096;
  --bg-primary: #ffffff;
  --bg-secondary: #f8f9fa;
  --bg-dark: #1a202c;
  --border: #e2e8f0;
  --success: #10b981;
  --warning: #f59e0b;
  --error: #ef4444;

  /* Typography */
  --font-sans: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
  --font-mono: 'SF Mono', Monaco, 'Cascadia Code', 'Courier New', monospace;

  /* 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;

  /* Border Radius */
  --radius-sm: 0.375rem;
  --radius-md: 0.5rem;
  --radius-lg: 0.75rem;
  --radius-xl: 1rem;
  --radius-full: 9999px;

  /* Shadows */
  --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
  --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);

  /* Transitions */
  --transition-fast: 150ms ease-in-out;
  --transition-base: 250ms ease-in-out;
  --transition-slow: 350ms ease-in-out;

  /* Container */
  --container-max: 1200px;
  --container-padding: var(--spacing-lg);
}

/* Reset & Base Styles */
*,
*::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-sans);
  font-size: 1rem;
  line-height: 1.6;
  color: var(--text-primary);
  background-color: var(--bg-primary);
}

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

h1 {
  font-size: clamp(2rem, 5vw, 3rem);
}

h2 {
  font-size: clamp(1.75rem, 4vw, 2.5rem);
}

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

h4 {
  font-size: 1.5rem;
}

h5 {
  font-size: 1.25rem;
}

h6 {
  font-size: 1.125rem;
}

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

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

a:hover {
  color: var(--primary-dark);
}

ul,
ol {
  margin-left: var(--spacing-lg);
  margin-bottom: var(--spacing-md);
}

li {
  margin-bottom: var(--spacing-sm);
  color: var(--text-secondary);
}

strong {
  font-weight: 600;
  color: var(--text-primary);
}

/* Layout */
.container {
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 var(--container-padding);
}

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

.section--gray {
  background-color: var(--bg-secondary);
}

/* Header & Navigation */
header {
  background: rgba(255, 255, 255, 0.85);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  border-bottom: 1px solid rgba(0, 102, 204, 0.1);
  position: sticky;
  top: 0;
  z-index: 1000;
  box-shadow:
    0 4px 24px rgba(0, 102, 204, 0.08),
    0 1px 0 rgba(255, 255, 255, 0.4) inset;
}

.nav {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: var(--spacing-lg) 0;
}

.nav__logo {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--primary);
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
}

.nav__menu {
  display: flex;
  gap: var(--spacing-xl);
  list-style: none;
  margin: 0;
}

.nav__link {
  color: var(--text-primary);
  font-weight: 500;
  padding: var(--spacing-sm) 0;
  position: relative;
}

.nav__link::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0;
  height: 2px;
  background-color: var(--primary);
  transition: width var(--transition-base);
}

.nav__link:hover::after,
.nav__link--active::after {
  width: 100%;
}

.nav__toggle {
  display: none;
  background: none;
  border: none;
  font-size: 1.5rem;
  cursor: pointer;
  color: var(--text-primary);
}

/* Hero Section */
.hero {
  padding: var(--spacing-3xl) 0;
  text-align: center;
  background: linear-gradient(135deg, #e0f2fe 0%, #bae6fd 50%, #7dd3fc 100%);
  position: relative;
  overflow: hidden;
}

.hero::before {
  content: '';
  position: absolute;
  top: -50%;
  left: -50%;
  width: 200%;
  height: 200%;
  background: radial-gradient(circle, rgba(255, 255, 255, 0.3) 0%, transparent 70%);
  animation: pulse 15s ease-in-out infinite;
}

@keyframes pulse {

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

  50% {
    transform: translate(-10%, -10%) scale(1.1);
  }
}

.hero__title {
  margin-bottom: var(--spacing-lg);
  background: linear-gradient(135deg, #0066cc 0%, #00b8d4 50%, #0066cc 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  position: relative;
  z-index: 1;
  animation: gradientShift 6s ease infinite;
  background-size: 200% 200%;
}

@keyframes gradientShift {

  0%,
  100% {
    background-position: 0% 50%;
  }

  50% {
    background-position: 100% 50%;
  }
}

.hero__subtitle {
  font-size: 1.25rem;
  color: var(--text-secondary);
  margin-bottom: var(--spacing-xl);
  max-width: 700px;
  margin-left: auto;
  margin-right: auto;
  position: relative;
  z-index: 1;
}

.hero__text {
  max-width: 800px;
  margin: 0 auto var(--spacing-xl);
  color: var(--text-secondary);
  line-height: 1.8;
  position: relative;
  z-index: 1;
}

/* Premium Buttons */
.btn {
  display: inline-block;
  padding: var(--spacing-md) var(--spacing-xl);
  border-radius: var(--radius-lg);
  font-weight: 600;
  text-align: center;
  cursor: pointer;
  transition: all var(--transition-base);
  border: none;
  font-size: 1rem;
  text-decoration: none;
  position: relative;
  overflow: hidden;
}

.btn::before {
  content: '';
  position: absolute;
  top: 50%;
  left: 50%;
  width: 0;
  height: 0;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.3);
  transform: translate(-50%, -50%);
  transition: width 0.6s, height 0.6s;
}

.btn:hover::before {
  width: 300px;
  height: 300px;
}

.btn--primary {
  background: linear-gradient(135deg, #0066cc 0%, #00b8d4 100%);
  color: white;
  box-shadow:
    0 8px 24px rgba(0, 102, 204, 0.3),
    0 1px 0 rgba(255, 255, 255, 0.2) inset;
  position: relative;
  z-index: 1;
}

.btn--primary:hover {
  background: linear-gradient(135deg, #0052a3 0%, #0097a7 100%);
  transform: translateY(-3px);
  box-shadow:
    0 12px 32px rgba(0, 102, 204, 0.4),
    0 2px 4px rgba(255, 255, 255, 0.3) inset;
  color: white;
}

.btn--primary:active {
  transform: translateY(-1px);
}

.btn--secondary {
  background: rgba(255, 255, 255, 0.9);
  color: var(--primary);
  border: 2px solid var(--primary);
  backdrop-filter: blur(10px);
  box-shadow: 0 4px 16px rgba(0, 102, 204, 0.15);
}

.btn--secondary:hover {
  background: linear-gradient(135deg, #0066cc 0%, #00b8d4 100%);
  color: white;
  border-color: transparent;
  transform: translateY(-3px);
  box-shadow: 0 8px 24px rgba(0, 102, 204, 0.3);
}

.btn--large {
  padding: var(--spacing-lg) var(--spacing-2xl);
  font-size: 1.125rem;
  border-radius: var(--radius-xl);
}

.btn-group {
  display: flex;
  gap: var(--spacing-md);
  flex-wrap: wrap;
  justify-content: center;
}

/* Cards with Glassmorphism */
.card {
  background: rgba(255, 255, 255, 0.7);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-radius: var(--radius-xl);
  padding: var(--spacing-xl);
  box-shadow:
    0 8px 32px 0 rgba(0, 102, 204, 0.1),
    0 1px 1px 0 rgba(255, 255, 255, 0.8) inset;
  transition: all var(--transition-base);
  border: 1px solid rgba(255, 255, 255, 0.3);
  position: relative;
  overflow: hidden;
}

.card::before {
  content: '';
  position: absolute;
  top: 0;
  left: -100%;
  width: 100%;
  height: 100%;
  background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.4), transparent);
  transition: left 0.5s;
}

.card:hover::before {
  left: 100%;
}

.card:hover {
  box-shadow:
    0 12px 48px 0 rgba(0, 102, 204, 0.2),
    0 2px 4px 0 rgba(255, 255, 255, 0.9) inset;
  transform: translateY(-8px) scale(1.02);
  border-color: rgba(0, 184, 212, 0.4);
}

.card__icon {
  width: 4rem;
  height: 4rem;
  background: linear-gradient(135deg, #3b82f6 0%, #06b6d4 100%);
  border-radius: var(--radius-lg);
  display: flex;
  align-items: center;
  justify-content: center;
  color: white;
  font-size: 2rem;
  margin-bottom: var(--spacing-lg);
  box-shadow:
    0 8px 16px rgba(59, 130, 246, 0.3),
    0 0 0 1px rgba(255, 255, 255, 0.1) inset;
  position: relative;
  overflow: hidden;
}

.card__icon::before {
  content: '';
  position: absolute;
  top: -50%;
  left: -50%;
  width: 200%;
  height: 200%;
  background: radial-gradient(circle, rgba(255, 255, 255, 0.3) 0%, transparent 70%);
  animation: iconGlow 3s ease-in-out infinite;
}

@keyframes iconGlow {

  0%,
  100% {
    transform: translate(0, 0);
    opacity: 0.5;
  }

  50% {
    transform: translate(10%, 10%);
    opacity: 1;
  }
}

.card__title {
  font-size: 1.25rem;
  margin-bottom: var(--spacing-md);
  font-weight: 700;
  background: linear-gradient(135deg, var(--text-primary) 0%, var(--primary) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.card__text {
  color: var(--text-secondary);
  line-height: 1.7;
}

/* 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));
}

.grid--4 {
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
}

/* Lists */
.list {
  list-style: none;
  margin: 0;
}

.list__item {
  padding-left: var(--spacing-xl);
  position: relative;
  margin-bottom: var(--spacing-md);
}

.list__item::before {
  content: '✓';
  position: absolute;
  left: 0;
  color: var(--success);
  font-weight: 700;
}

/* Premium Steps */
.steps {
  counter-reset: step-counter;
}

.step {
  counter-increment: step-counter;
  padding-left: 5rem;
  position: relative;
  margin-bottom: var(--spacing-2xl);
  background: rgba(255, 255, 255, 0.5);
  backdrop-filter: blur(10px);
  padding: var(--spacing-xl);
  padding-left: 6rem;
  border-radius: var(--radius-xl);
  border: 1px solid rgba(0, 184, 212, 0.2);
  transition: all var(--transition-base);
}

.step:hover {
  background: rgba(255, 255, 255, 0.7);
  transform: translateX(8px);
  box-shadow: 0 8px 24px rgba(0, 102, 204, 0.15);
}

.step::before {
  content: counter(step-counter);
  position: absolute;
  left: var(--spacing-lg);
  top: var(--spacing-xl);
  width: 3.5rem;
  height: 3.5rem;
  background: linear-gradient(135deg, #3b82f6 0%, #06b6d4 100%);
  color: white;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  font-size: 1.5rem;
  box-shadow:
    0 8px 20px rgba(59, 130, 246, 0.4),
    0 0 0 4px rgba(255, 255, 255, 0.3),
    0 0 0 8px rgba(59, 130, 246, 0.1);
  transition: all var(--transition-base);
}

.step:hover::before {
  transform: scale(1.1) rotate(10deg);
  box-shadow:
    0 12px 28px rgba(59, 130, 246, 0.5),
    0 0 0 4px rgba(255, 255, 255, 0.5),
    0 0 0 8px rgba(59, 130, 246, 0.2);
}

.step__title {
  font-size: 1.25rem;
  font-weight: 600;
  margin-bottom: var(--spacing-sm);
  color: var(--text-primary);
}

.step__text {
  color: var(--text-secondary);
  line-height: 1.7;
}

/* Premium Testimonials */
.testimonial {
  background: rgba(255, 255, 255, 0.6);
  backdrop-filter: blur(15px);
  padding: var(--spacing-xl);
  border-radius: var(--radius-xl);
  border-left: 4px solid transparent;
  background-image:
    linear-gradient(rgba(255, 255, 255, 0.6), rgba(255, 255, 255, 0.6)),
    linear-gradient(135deg, #3b82f6, #06b6d4);
  background-origin: border-box;
  background-clip: padding-box, border-box;
  box-shadow: 0 8px 24px rgba(0, 102, 204, 0.12);
  transition: all var(--transition-base);
  position: relative;
}

.testimonial::before {
  content: '"';
  position: absolute;
  top: -10px;
  left: 20px;
  font-size: 4rem;
  color: var(--primary);
  opacity: 0.2;
  font-family: Georgia, serif;
}

.testimonial:hover {
  transform: translateY(-4px);
  box-shadow: 0 12px 32px rgba(0, 102, 204, 0.2);
  background: rgba(255, 255, 255, 0.8);
}

.testimonial__text {
  font-style: italic;
  color: var(--text-secondary);
  margin-bottom: var(--spacing-md);
  line-height: 1.7;
  position: relative;
  z-index: 1;
}

.testimonial__author {
  font-weight: 600;
  color: var(--primary);
}

/* Premium FAQ Accordion */
.faq__item {
  background: rgba(255, 255, 255, 0.6);
  backdrop-filter: blur(15px);
  border: 1px solid rgba(0, 184, 212, 0.2);
  border-radius: var(--radius-lg);
  margin-bottom: var(--spacing-md);
  overflow: hidden;
  transition: all var(--transition-base);
}

.faq__item:hover {
  background: rgba(255, 255, 255, 0.8);
  box-shadow: 0 8px 20px rgba(0, 102, 204, 0.12);
  transform: translateX(4px);
}

.faq__item.active {
  background: rgba(255, 255, 255, 0.9);
  border-color: rgba(0, 184, 212, 0.4);
  box-shadow: 0 8px 24px rgba(0, 102, 204, 0.15);
}

.faq__question {
  width: 100%;
  padding: var(--spacing-lg);
  background: none;
  border: none;
  text-align: left;
  font-weight: 600;
  font-size: 1.125rem;
  cursor: pointer;
  display: flex;
  justify-content: space-between;
  align-items: center;
  color: var(--text-primary);
  transition: all var(--transition-fast);
  position: relative;
}

.faq__question::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0;
  height: 2px;
  background: linear-gradient(90deg, #3b82f6, #06b6d4);
  transition: width var(--transition-base);
}

.faq__item.active .faq__question::after,
.faq__question:hover::after {
  width: 100%;
}

.faq__icon {
  font-size: 1.5rem;
  color: var(--primary);
  transition: transform var(--transition-base);
  background: linear-gradient(135deg, #3b82f6, #06b6d4);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  font-weight: 700;
}

.faq__item.active .faq__icon {
  transform: rotate(45deg);
}

.faq__answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height var(--transition-base);
}

.faq__item.active .faq__answer {
  max-height: 1000px;
}

.faq__answer-content {
  padding: 0 var(--spacing-lg) var(--spacing-lg);
  color: var(--text-secondary);
  line-height: 1.7;
}

/* Forms */
.form__group {
  margin-bottom: var(--spacing-lg);
}

.form__label {
  display: block;
  font-weight: 600;
  margin-bottom: var(--spacing-sm);
  color: var(--text-primary);
}

.form__input,
.form__textarea {
  width: 100%;
  padding: var(--spacing-md);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  font-family: inherit;
  font-size: 1rem;
  transition: all var(--transition-fast);
}

.form__input:focus,
.form__textarea:focus {
  outline: none;
  border-color: var(--primary);
  box-shadow: 0 0 0 3px rgba(0, 102, 204, 0.1);
}

.form__textarea {
  resize: vertical;
  min-height: 150px;
}

/* Footer */
footer {
  background-color: var(--bg-dark);
  color: var(--gray-300);
  padding: var(--spacing-3xl) 0 var(--spacing-xl);
}

.footer__grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: var(--spacing-2xl);
  margin-bottom: var(--spacing-2xl);
}

.footer__title {
  color: white;
  font-size: 1.125rem;
  margin-bottom: var(--spacing-lg);
}

.footer__link {
  color: var(--gray-300);
  display: block;
  margin-bottom: var(--spacing-sm);
  transition: color var(--transition-fast);
}

.footer__link:hover {
  color: var(--primary-light);
}

.footer__bottom {
  border-top: 1px solid var(--gray-700);
  padding-top: var(--spacing-lg);
  text-align: center;
  color: var(--gray-400);
}

/* Premium Alert/Notice */
.alert {
  padding: var(--spacing-lg);
  border-radius: var(--radius-lg);
  margin-bottom: var(--spacing-lg);
  border-left: 4px solid;
  backdrop-filter: blur(10px);
  transition: all var(--transition-base);
}

.alert:hover {
  transform: translateX(4px);
  box-shadow: 0 4px 16px rgba(0, 0, 0, 0.08);
}

.alert--info {
  background: rgba(224, 242, 254, 0.8);
  border-color: var(--primary);
  color: var(--primary-dark);
}

.alert--warning {
  background: rgba(254, 243, 199, 0.8);
  border-color: var(--warning);
  color: #92400e;
}

/* Mobile Responsive */
@media (max-width: 768px) {
  .nav__menu {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background-color: var(--bg-primary);
    flex-direction: column;
    padding: var(--spacing-lg);
    border-bottom: 1px solid var(--border);
    box-shadow: var(--shadow-lg);
  }

  .nav__menu.active {
    display: flex;
  }

  .nav__toggle {
    display: block;
  }

  .section {
    padding: var(--spacing-2xl) 0;
  }

  .btn-group {
    flex-direction: column;
  }

  .btn {
    width: 100%;
  }

  .grid--2,
  .grid--3,
  .grid--4 {
    grid-template-columns: 1fr;
  }
}

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

.text-left {
  text-align: left;
}

.text-right {
  text-align: right;
}

.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);
}