/**
 * DAVHUB - Main Stylesheet
 * Modern, responsive design with smooth animations and glassmorphism
 */

/* ============================================
   1. RESET & BASE STYLES
   ============================================ */

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

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

body {
  font-family: 'Inter', 'Segoe UI', 'Roboto', sans-serif;
  font-size: 1rem;
  line-height: 1.6;
  color: #1A1A1A;
  background-color: #F8F9FC;
  overflow-x: hidden;
}

/* ============================================
   2. TYPOGRAPHY
   ============================================ */

h1, h2, h3, h4, h5, h6 {
  font-family: 'Poppins', 'Segoe UI', 'Roboto', sans-serif;
  font-weight: 600;
  line-height: 1.3;
  margin-bottom: 1rem;
}

h1 {
  font-size: 3rem;
  letter-spacing: -0.02em;
}

h2 {
  font-size: 2.25rem;
  letter-spacing: -0.01em;
}

h3 {
  font-size: 1.875rem;
}

h4 {
  font-size: 1.5rem;
}

h5 {
  font-size: 1.25rem;
}

h6 {
  font-size: 1rem;
}

p {
  margin-bottom: 1rem;
  color: #6B7280;
  line-height: 1.8;
}

a {
  color: #6C63FF;
  text-decoration: none;
  transition: color 300ms ease-in-out;
}

a:hover {
  color: #0A0F2C;
}

/* ============================================
   3. BUTTONS & CTAs
   ============================================ */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.875rem 2rem;
  font-size: 1rem;
  font-weight: 600;
  border: none;
  border-radius: 0.5rem;
  cursor: pointer;
  transition: all 300ms ease-in-out;
  text-decoration: none;
  white-space: nowrap;
  gap: 0.5rem;
}

.btn-primary {
  background: linear-gradient(135deg, #6C63FF 0%, #5A52E0 100%);
  color: white;
  box-shadow: 0 10px 25px -5px rgba(108, 99, 255, 0.3);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 15px 35px -5px rgba(108, 99, 255, 0.4);
}

.btn-primary:active {
  transform: translateY(0);
}

.btn-secondary {
  background: transparent;
  color: #6C63FF;
  border: 2px solid #6C63FF;
}

.btn-secondary:hover {
  background: #6C63FF;
  color: white;
  transform: translateY(-2px);
}

.btn-tertiary {
  background: #FFD166;
  color: #0A0F2C;
  font-weight: 700;
}

.btn-tertiary:hover {
  background: #FFC94F;
  transform: translateY(-2px);
}

.btn-ghost {
  background: transparent;
  color: #1A1A1A;
  border: 2px solid #1A1A1A;
}

.btn-ghost:hover {
  background: #1A1A1A;
  color: white;
}

.btn-sm {
  padding: 0.625rem 1.5rem;
  font-size: 0.875rem;
}

.btn-lg {
  padding: 1rem 2.5rem;
  font-size: 1.125rem;
}

/* ============================================
   4. NAVIGATION
   ============================================ */

nav {
  position: sticky;
  top: 0;
  background: rgba(248, 249, 252, 0.95);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid rgba(229, 231, 235, 0.5);
  z-index: 1000;
  box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.05);
}

.navbar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 1.25rem 0;
  max-width: 1280px;
  margin: 0 auto;
  padding-left: 2rem;
  padding-right: 2rem;
}

.navbar-logo {
  font-size: 1.5rem;
  font-weight: 800;
  background: linear-gradient(135deg, #6C63FF 0%, #FFD166 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  letter-spacing: 0.05em;
}

.navbar-menu {
  display: flex;
  gap: 3rem;
  list-style: none;
  align-items: center;
}

.navbar-menu a {
  color: #1A1A1A;
  font-weight: 500;
  position: relative;
  transition: color 300ms ease-in-out;
}

.navbar-menu a::after {
  content: '';
  position: absolute;
  bottom: -4px;
  left: 0;
  width: 0;
  height: 2px;
  background: linear-gradient(135deg, #6C63FF, #FFD166);
  transition: width 300ms ease-in-out;
}

.navbar-menu a:hover {
  color: #6C63FF;
}

.navbar-menu a:hover::after {
  width: 100%;
}

.navbar-menu a.active {
  color: #6C63FF;
}

.navbar-menu a.active::after {
  width: 100%;
}

.hamburger {
  display: none;
  flex-direction: column;
  cursor: pointer;
  gap: 0.35rem;
}

.hamburger span {
  width: 25px;
  height: 3px;
  background: #1A1A1A;
  border-radius: 2px;
  transition: all 300ms ease-in-out;
}

/* ============================================
   5. CONTAINERS & LAYOUTS
   ============================================ */

.container {
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 2rem;
}

.grid {
  display: grid;
  gap: 2rem;
}

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

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

.grid-cols-3 {
  grid-template-columns: repeat(3, 1fr);
}

.grid-cols-4 {
  grid-template-columns: repeat(4, 1fr);
}

.flex {
  display: flex;
}

.flex-col {
  flex-direction: column;
}

.flex-center {
  display: flex;
  align-items: center;
  justify-content: center;
}

.gap-4 { gap: 1.5rem; }
.gap-6 { gap: 2rem; }
.gap-8 { gap: 3rem; }

/* ============================================
   6. SECTION & SPACING
   ============================================ */

section {
  padding: 6rem 0;
}

section.py-small {
  padding: 3rem 0;
}

section.py-large {
  padding: 8rem 0;
}

.section-title {
  text-align: center;
  margin-bottom: 3rem;
}

.section-title h2 {
  margin-bottom: 1rem;
}

.section-title p {
  font-size: 1.125rem;
  color: #6B7280;
  max-width: 500px;
  margin: 0 auto;
}

/* ============================================
   7. CARDS & COMPONENTS
   ============================================ */

.card {
  background: white;
  border-radius: 1rem;
  padding: 2rem;
  box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.05);
  transition: all 300ms ease-in-out;
  border: 1px solid rgba(229, 231, 235, 0.5);
}

.card:hover {
  transform: translateY(-8px);
  box-shadow: 0 20px 25px -5px rgba(0, 0, 0, 0.1);
}

.card-image {
  width: 100%;
  height: 250px;
  object-fit: cover;
  border-radius: 0.75rem;
  margin-bottom: 1.5rem;
}

.card-title {
  font-size: 1.25rem;
  font-weight: 700;
  margin-bottom: 0.75rem;
}

.card-text {
  color: #6B7280;
  font-size: 0.95rem;
  line-height: 1.7;
  margin-bottom: 1.5rem;
}

.card-footer {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 1rem;
}

/* ============================================
   8. GLASSMORPHISM
   ============================================ */

.glass {
  background: rgba(255, 255, 255, 0.9);
  backdrop-filter: blur(10px);
  border: 1px solid rgba(255, 255, 255, 0.2);
  border-radius: 1rem;
  box-shadow: 0 8px 32px 0 rgba(31, 38, 135, 0.37);
}

.glass-dark {
  background: rgba(10, 15, 44, 0.8);
  backdrop-filter: blur(10px);
  border: 1px solid rgba(255, 255, 255, 0.1);
}

/* ============================================
   9. GRADIENTS & BACKGROUNDS
   ============================================ */

.gradient-primary {
  background: linear-gradient(135deg, #6C63FF 0%, #5A52E0 100%);
}

.gradient-secondary {
  background: linear-gradient(135deg, #0A0F2C 0%, #6C63FF 100%);
}

.gradient-accent {
  background: linear-gradient(135deg, #FFD166 0%, #FFC94F 100%);
}

.gradient-text {
  background: linear-gradient(135deg, #6C63FF 0%, #FFD166 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.bg-light {
  background: #F8F9FC;
}

.bg-dark {
  background: #0A0F2C;
  color: white;
}

.bg-dark h1,
.bg-dark h2,
.bg-dark h3,
.bg-dark h4,
.bg-dark h5,
.bg-dark h6,
.bg-dark p {
  color: white;
}

.bg-dark p {
  color: #E5E7EB;
}

/* ============================================
   10. HERO SECTION
   ============================================ */

.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, #F8F9FC 0%, #E5E7EB 100%);
  position: relative;
  overflow: hidden;
}

.hero::before {
  content: '';
  position: absolute;
  width: 600px;
  height: 600px;
  background: radial-gradient(circle, rgba(108, 99, 255, 0.15) 0%, transparent 70%);
  border-radius: 50%;
  top: -200px;
  right: -200px;
  animation: float 8s ease-in-out infinite;
}

.hero::after {
  content: '';
  position: absolute;
  width: 400px;
  height: 400px;
  background: radial-gradient(circle, rgba(255, 209, 102, 0.1) 0%, transparent 70%);
  border-radius: 50%;
  bottom: -100px;
  left: -100px;
  animation: float-reverse 10s ease-in-out infinite;
}

.hero-content {
  position: relative;
  z-index: 2;
  text-align: center;
  max-width: 800px;
  animation: fadeInUp 1s ease-out;
}

.hero h1 {
  font-size: 3.5rem;
  line-height: 1.2;
  margin-bottom: 1.5rem;
  color: #0A0F2C;
}

.hero .gradient-text {
  display: block;
}

.hero p {
  font-size: 1.25rem;
  color: #6B7280;
  margin-bottom: 2.5rem;
  line-height: 1.8;
}

.hero-buttons {
  display: flex;
  gap: 1rem;
  justify-content: center;
  flex-wrap: wrap;
}

/* ============================================
   11. ANIMATIONS
   ============================================ */

@keyframes fadeIn {
  from {
    opacity: 0;
  }
  to {
    opacity: 1;
  }
}

@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(30px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes slideInLeft {
  from {
    opacity: 0;
    transform: translateX(-30px);
  }
  to {
    opacity: 1;
    transform: translateX(0);
  }
}

@keyframes slideInRight {
  from {
    opacity: 0;
    transform: translateX(30px);
  }
  to {
    opacity: 1;
    transform: translateX(0);
  }
}

@keyframes float {
  0%, 100% {
    transform: translateY(0) rotate(0deg);
  }
  50% {
    transform: translateY(-30px) rotate(180deg);
  }
}

@keyframes float-reverse {
  0%, 100% {
    transform: translateY(0) rotate(0deg);
  }
  50% {
    transform: translateY(30px) rotate(-180deg);
  }
}

@keyframes pulse {
  0%, 100% {
    opacity: 1;
  }
  50% {
    opacity: 0.5;
  }
}

@keyframes bounce {
  0%, 100% {
    transform: translateY(0);
  }
  50% {
    transform: translateY(-10px);
  }
}

.animate-fadeIn {
  animation: fadeIn 0.6s ease-out;
}

.animate-fadeInUp {
  animation: fadeInUp 0.8s ease-out;
}

.animate-slideInLeft {
  animation: slideInLeft 0.8s ease-out;
}

.animate-slideInRight {
  animation: slideInRight 0.8s ease-out;
}

.animate-pulse {
  animation: pulse 2s ease-in-out infinite;
}

.animate-bounce {
  animation: bounce 2s ease-in-out infinite;
}

/* ============================================
   12. SERVICE CARDS
   ============================================ */

.service-card {
  background: white;
  border-radius: 1rem;
  padding: 2.5rem;
  text-align: center;
  transition: all 300ms ease-in-out;
  border: 1px solid rgba(229, 231, 235, 0.5);
  position: relative;
}

.service-card:hover {
  transform: translateY(-12px);
  box-shadow: 0 20px 40px -10px rgba(108, 99, 255, 0.2);
  border-color: #6C63FF;
}

.service-card-icon {
  font-size: 3rem;
  margin-bottom: 1.5rem;
  height: 80px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, rgba(108, 99, 255, 0.1), rgba(255, 209, 102, 0.1));
  border-radius: 1rem;
  margin-left: auto;
  margin-right: auto;
  transition: all 300ms ease-in-out;
}

.service-card:hover .service-card-icon {
  background: linear-gradient(135deg, #6C63FF 0%, #FFD166 100%);
  color: white;
  transform: scale(1.1) rotate(5deg);
}

.service-card h3 {
  margin-bottom: 1rem;
  color: #0A0F2C;
}

.service-card p {
  margin-bottom: 1.5rem;
  font-size: 0.95rem;
}

/* ============================================
   13. PORTFOLIO GRID
   ============================================ */

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

.portfolio-item {
  border-radius: 1rem;
  overflow: hidden;
  background: white;
  box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.05);
  transition: all 300ms ease-in-out;
  cursor: pointer;
}

.portfolio-item:hover {
  transform: translateY(-8px);
  box-shadow: 0 20px 25px -5px rgba(0, 0, 0, 0.1);
}

.portfolio-image {
  position: relative;
  overflow: hidden;
  height: 250px;
}

.portfolio-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 300ms ease-in-out;
}

.portfolio-item:hover .portfolio-image img {
  transform: scale(1.08);
}

.portfolio-overlay {
  position: absolute;
  inset: 0;
  background: rgba(0, 0, 0, 0.5);
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  transition: opacity 300ms ease-in-out;
}

.portfolio-item:hover .portfolio-overlay {
  opacity: 1;
}

.portfolio-overlay-content {
  text-align: center;
  color: white;
}

.portfolio-content {
  padding: 1.5rem;
}

.portfolio-category {
  display: inline-block;
  background: #6C63FF;
  color: white;
  padding: 0.25rem 0.75rem;
  border-radius: 2rem;
  font-size: 0.75rem;
  font-weight: 700;
  text-transform: uppercase;
  margin-bottom: 0.75rem;
}

.portfolio-title {
  font-size: 1.25rem;
  font-weight: 700;
  margin-bottom: 0.5rem;
  color: #0A0F2C;
}

.portfolio-description {
  font-size: 0.9rem;
  color: #6B7280;
}

/* ============================================
   14. TESTIMONIALS
   ============================================ */

.testimonial-card {
  background: white;
  border-radius: 1rem;
  padding: 2rem;
  text-align: center;
  box-shadow: 0 4px 6px -1px rgba(0, 0, 0, 0.05);
  border: 1px solid rgba(229, 231, 235, 0.5);
  transition: all 300ms ease-in-out;
}

.testimonial-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 15px 35px -5px rgba(108, 99, 255, 0.2);
  border-color: #6C63FF;
}

.testimonial-stars {
  color: #FFD166;
  font-size: 1.25rem;
  margin-bottom: 1rem;
  letter-spacing: 0.1rem;
}

.testimonial-text {
  font-size: 0.95rem;
  font-style: italic;
  color: #6B7280;
  margin-bottom: 1.5rem;
  line-height: 1.8;
}

.testimonial-author {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.75rem;
}

.testimonial-avatar {
  width: 60px;
  height: 60px;
  border-radius: 50%;
  object-fit: cover;
  border: 3px solid #6C63FF;
}

.testimonial-name {
  font-weight: 700;
  color: #0A0F2C;
  font-size: 1rem;
}

.testimonial-role {
  color: #6B7280;
  font-size: 0.875rem;
}

/* ============================================
   15. FORM ELEMENTS
   ============================================ */

.form-group {
  margin-bottom: 1.5rem;
}

label {
  display: block;
  margin-bottom: 0.5rem;
  font-weight: 600;
  color: #1A1A1A;
  font-size: 0.95rem;
}

input,
textarea,
select {
  width: 100%;
  padding: 0.875rem;
  border: 1px solid #E5E7EB;
  border-radius: 0.5rem;
  font-family: inherit;
  font-size: 1rem;
  color: #1A1A1A;
  transition: all 300ms ease-in-out;
}

input:focus,
textarea:focus,
select:focus {
  outline: none;
  border-color: #6C63FF;
  box-shadow: 0 0 0 3px rgba(108, 99, 255, 0.1);
}

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

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.5rem;
}

.form-success {
  background: #D1FAE5;
  color: #065F46;
  padding: 1rem;
  border-radius: 0.5rem;
  border: 1px solid #6EE7B7;
  margin-bottom: 1.5rem;
}

.form-error {
  background: #FEE2E2;
  color: #991B1B;
  padding: 1rem;
  border-radius: 0.5rem;
  border: 1px solid #FECACA;
  margin-bottom: 1.5rem;
}

/* ============================================
   16. FOOTER
   ============================================ */

footer {
  background: #0A0F2C;
  color: white;
  padding: 3rem 0 1rem;
  margin-top: 4rem;
}

.footer-content {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 2rem;
  margin-bottom: 2rem;
}

.footer-section h4 {
  color: white;
  margin-bottom: 1rem;
}

.footer-section ul {
  list-style: none;
}

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

.footer-section a {
  color: #E5E7EB;
  transition: color 300ms ease-in-out;
}

.footer-section a:hover {
  color: #FFD166;
}

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

.social-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  background: rgba(255, 255, 255, 0.1);
  border-radius: 50%;
  color: white;
  transition: all 300ms ease-in-out;
}

.social-icon:hover {
  background: #6C63FF;
  transform: translateY(-3px);
}

.footer-divider {
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  padding-top: 2rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 2rem;
}

.footer-copyright {
  color: #9CA3AF;
  font-size: 0.875rem;
}

.footer-links {
  display: flex;
  gap: 2rem;
}

.footer-links a {
  color: #9CA3AF;
  font-size: 0.875rem;
  transition: color 300ms ease-in-out;
}

.footer-links a:hover {
  color: #FFD166;
}

/* ============================================
   17. VALUES & FEATURES SECTION
   ============================================ */

.feature-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 2rem;
}

.feature-item {
  text-align: center;
}

.feature-icon {
  font-size: 3rem;
  margin-bottom: 1rem;
  height: 70px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.feature-item h3 {
  margin-bottom: 0.75rem;
  color: #0A0F2C;
}

.feature-item p {
  color: #6B7280;
  font-size: 0.95rem;
}

/* ============================================
   18. STATS SECTION
   ============================================ */

.stats-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 2rem;
}

.stat-item {
  text-align: center;
}

.stat-number {
  font-size: 3rem;
  font-weight: 800;
  background: linear-gradient(135deg, #6C63FF, #FFD166);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  margin-bottom: 0.5rem;
}

.stat-label {
  color: #6B7280;
  font-size: 1rem;
  font-weight: 600;
}

/* ============================================
   19. BREADCRUMB
   ============================================ */

.breadcrumb {
  display: flex;
  gap: 0.75rem;
  align-items: center;
  margin-bottom: 2rem;
  font-size: 0.9rem;
}

.breadcrumb a {
  color: #6C63FF;
  transition: color 300ms ease-in-out;
}

.breadcrumb a:hover {
  color: #0A0F2C;
}

.breadcrumb span {
  color: #6B7280;
}

/* ============================================
   20. RESPONSIVE DESIGN
   ============================================ */

@media (max-width: 1024px) {
  .container {
    padding: 0 1.5rem;
  }

  .grid-cols-3 {
    grid-template-columns: repeat(2, 1fr);
  }

  .grid-cols-4 {
    grid-template-columns: repeat(2, 1fr);
  }

  h1 {
    font-size: 2.5rem;
  }

  h2 {
    font-size: 2rem;
  }

  section {
    padding: 4rem 0;
  }

  .hero {
    min-height: 80vh;
  }

  .hero h1 {
    font-size: 2.5rem;
  }

  .navbar-menu {
    gap: 2rem;
  }
}

@media (max-width: 768px) {
  .navbar {
    padding: 1rem 0;
  }

  .hamburger {
    display: flex;
  }

  .navbar-menu {
    position: absolute;
    top: 60px;
    left: 0;
    right: 0;
    flex-direction: column;
    background: white;
    padding: 2rem;
    gap: 1rem;
    max-height: 0;
    overflow: hidden;
    transition: max-height 300ms ease-in-out;
  }

  .navbar-menu.active {
    max-height: 500px;
    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.1);
  }

  .hamburger.active span:nth-child(1) {
    transform: rotate(45deg) translateY(10px);
  }

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

  .hamburger.active span:nth-child(3) {
    transform: rotate(-45deg) translateY(-10px);
  }

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

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

  .grid-cols-4 {
    grid-template-columns: 1fr;
  }

  h1 {
    font-size: 2rem;
  }

  h2 {
    font-size: 1.75rem;
  }

  .hero {
    min-height: 60vh;
    padding: 2rem 0;
  }

  .hero h1 {
    font-size: 2rem;
  }

  .hero p {
    font-size: 1rem;
  }

  .hero-buttons {
    flex-direction: column;
    gap: 1rem;
  }

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

  .section-title h2 {
    font-size: 1.75rem;
  }

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

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

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

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

  .footer-links {
    justify-content: center;
  }

  section {
    padding: 3rem 0;
  }
}

@media (max-width: 480px) {
  .navbar {
    padding: 0.75rem 1rem;
  }

  .navbar-menu {
    top: 50px;
  }

  .container {
    padding: 0 1rem;
  }

  h1 {
    font-size: 1.75rem;
  }

  h2 {
    font-size: 1.5rem;
  }

  h3 {
    font-size: 1.25rem;
  }

  .hero h1 {
    font-size: 1.75rem;
  }

  .card {
    padding: 1.5rem;
  }

  .service-card {
    padding: 2rem 1.5rem;
  }

  .btn {
    padding: 0.75rem 1.5rem;
    font-size: 0.95rem;
  }

  .navbar-menu {
    gap: 0.5rem;
  }

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

  .stat-number {
    font-size: 2rem;
  }

  section {
    padding: 2rem 0;
  }
}

/* ============================================
   21. UTILITY CLASSES
   ============================================ */

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

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

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

.text-muted {
  color: #6B7280;
}

.text-dark {
  color: #0A0F2C;
}

.text-light {
  color: #E5E7EB;
}

.mt-4 { margin-top: 1.5rem; }
.mt-6 { margin-top: 2rem; }
.mt-8 { margin-top: 3rem; }

.mb-4 { margin-bottom: 1.5rem; }
.mb-6 { margin-bottom: 2rem; }
.mb-8 { margin-bottom: 3rem; }

.py-4 { padding: 1.5rem 0; }
.py-6 { padding: 2rem 0; }
.py-8 { padding: 3rem 0; }

.opacity-50 { opacity: 0.5; }
.opacity-75 { opacity: 0.75; }

.rounded-lg { border-radius: 1rem; }
.rounded-xl { border-radius: 1.5rem; }

/* ============================================
   22. SKIP TO CONTENT
   ============================================ */

.skip-to-content {
  position: absolute;
  top: -40px;
  left: 0;
  background: #6C63FF;
  color: white;
  padding: 0.5rem 1rem;
  border-radius: 0 0 0.5rem 0;
}

.skip-to-content:focus {
  top: 0;
}

/* ============================================
   23. BACK TO TOP BUTTON
   ============================================ */

.back-to-top {
  position: fixed;
  bottom: 2rem;
  right: 2rem;
  width: 50px;
  height: 50px;
  background: linear-gradient(135deg, #6C63FF, #FFD166);
  color: white;
  border: none;
  border-radius: 50%;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
  opacity: 0;
  visibility: hidden;
  transition: all 300ms ease-in-out;
  z-index: 999;
  box-shadow: 0 10px 25px rgba(108, 99, 255, 0.3);
}

.back-to-top.visible {
  opacity: 1;
  visibility: visible;
}

.back-to-top:hover {
  transform: translateY(-3px);
  box-shadow: 0 15px 35px rgba(108, 99, 255, 0.4);
}