:root {
  /* DigitalOcean colors - ajustadas para melhor contraste */
  --brand-primary: #0069ff;
  --brand-dark: #031b4e;
  --brand-accent: #00d7d2;
  --brand-muted: #f8f9fc;
  --brand-success: #00b288;
  --brand-warning: #f48024;
  --text-primary: #031b4e;
  --text-muted: #4d5b7c;
  --text-light: #ffffff;
  --bg-dark: #002159;
  --bg-darker: #031b4e;
  --gradient-primary: linear-gradient(135deg, #0069ff 0%, #00d7d2 100%);
  --gradient-secondary: linear-gradient(135deg, #002159 0%, #031b4e 100%);
  --gradient-success: linear-gradient(135deg, #00b288 0%, #00d7d2 100%);
  --shadow-soft: 0 4px 12px rgba(0,0,0,0.08);
  --shadow-hover: 0 8px 24px rgba(0,0,0,0.12);
  
  /* Typography - Optimized size */
  --font-primary: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
  --font-size-base: 14px;
  --line-height-base: 1.5;
  
  /* Spacing */
  --spacing-xs: 0.25rem;
  --spacing-sm: 0.5rem;
  --spacing-md: 1rem;
  --spacing-lg: 1.5rem;
  --spacing-xl: 2rem;
  
  /* Border radius */
  --radius-sm: 4px;
  --radius-md: 8px;
  --radius-lg: 12px;
}

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

body { 
  font-family: var(--font-primary);
  font-size: var(--font-size-base);
  line-height: var(--line-height-base);
  color: var(--text-primary);
  background-color: var(--brand-muted);
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

h1, h2, h3, h4, h5, h6 {
  color: var(--text-primary);
  font-weight: 600;
  letter-spacing: -0.02em;
  margin-bottom: var(--spacing-md);
}

.display-6 {
  font-size: clamp(2rem, 4vw, 2.5rem);
  font-weight: 700;
  line-height: 1.2;
  color: var(--text-primary);
}

p {
  color: var(--text-muted);
  margin-bottom: var(--spacing-md);
  font-size: 1rem;
  line-height: 1.7;
}

.lead {
  font-size: 1.25rem;
  font-weight: 400;
  line-height: 1.7;
  color: var(--text-muted);
}

/* Melhorar contraste em seções escuras */
.bg-dark {
  background-color: var(--bg-dark) !important;
}

.bg-darker {
  background-color: var(--bg-darker) !important;
}

.text-light {
  color: var(--text-light) !important;
}

.text-muted-light {
  color: rgba(255,255,255,0.8) !important;
}

/* Scrollbar customizada */
::-webkit-scrollbar {
  width: 8px;
}
::-webkit-scrollbar-track {
  background: #f1f1f1;
}
::-webkit-scrollbar-thumb {
  background: var(--brand-primary);
  border-radius: 4px;
}

/* Navbar - DigitalOcean style */
.navbar {
  background: white !important;
  border-bottom: 1px solid rgba(0,0,0,0.08);
  padding: 1rem 0;
  transition: all 0.2s ease;
}

.navbar.scrolled {
  box-shadow: var(--shadow-soft);
}

.navbar-brand {
  font-weight: 600;
  font-size: 1.25rem;
  color: var(--brand-dark);
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.navbar-brand i {
  color: var(--brand-primary);
}

.nav-link {
  color: var(--text-muted);
  font-weight: 500;
  font-size: 0.9375rem;
  padding: 0.5rem 1rem;
  transition: color 0.2s ease;
}

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

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

.navbar-toggler {
  border: none;
  padding: 0.5rem;
}

.navbar-toggler:focus {
  box-shadow: none;
}

/* Hero section - DigitalOcean style com particles.js */
.hero {
  min-height: 75vh;
  background: linear-gradient(135deg, var(--bg-darker) 0%, var(--bg-dark) 100%);
  position: relative;
  display: flex;
  align-items: center;
  padding: 7rem 0 4rem;
  overflow: hidden;
}

/* iPad em landscape (1024px) */
@media only screen 
and (min-device-width: 768px) 
and (max-device-width: 1024px) 
and (orientation: landscape) {
  .hero {
    min-height: auto;
    padding: 2rem 0;
  }
  .hero h1 {
    font-size: clamp(2rem, 3.5vw, 2.8rem);
    margin-bottom: 1rem;
    margin-top: 3rem;
  }
  .hero .lead {
    font-size: 1.1rem;
    line-height: 1.5;
    margin-bottom: 1.5rem;
  }
  .hero-content {
    max-width: 90%;
    padding-top: 1rem;
  }
  .hero-content > * {
    margin-top: 0;
  }
}

#particles-js {
  position: absolute;
  width: 100%;
  height: 100%;
  top: 0;
  left: 0;
  z-index: 1;
  background: transparent;
  pointer-events: none;
}

#particles-js canvas {
  position: absolute;
  width: 100%;
  height: 100%;
  z-index: 1;
}

.hero::before {
  content: '';
  position: absolute;
  width: 100%;
  height: 100%;
  top: 0;
  left: 0;
  background-image: 
    radial-gradient(circle at 20% 20%, rgba(0,105,255,0.15) 0%, transparent 50%),
    radial-gradient(circle at 80% 80%, rgba(0,215,210,0.15) 0%, transparent 50%);
  opacity: 0.8;
  z-index: 1;
}

.hero-content {
  position: relative;
  z-index: 2;
  color: var(--text-light);
}

.hero h1 {
  font-size: clamp(2.5rem, 5vw, 3.5rem);
  font-weight: 700;
  line-height: 1.2;
  margin-bottom: 1.5rem;
  letter-spacing: -0.02em;
  color: var(--text-light);
}

.hero .lead {
  font-size: 1.1rem;
  line-height: 1.7;
  color: rgba(255,255,255,0.95);
  margin-bottom: 2rem;
  max-width: 600px;
  text-shadow: 0 1px 2px rgba(0,0,0,0.1);
}

.hero .badge {
  background: rgba(255,255,255,0.15);
  color: var(--text-light);
  border: 1px solid rgba(255,255,255,0.25);
  font-weight: 500;
  padding: 0.75rem 1.25rem;
  border-radius: var(--radius-md);
  backdrop-filter: blur(10px);
  text-shadow: 0 1px 2px rgba(0,0,0,0.1);
}

.hero .stats-counter {
  color: var(--brand-accent);
  text-shadow: 0 1px 2px rgba(0,0,0,0.1);
}

.hero .stats-label {
  color: rgba(255,255,255,0.9);
  text-shadow: 0 1px 2px rgba(0,0,0,0.1);
}

.floating-card {
  background: rgba(255,255,255,0.15);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border: 1px solid rgba(255,255,255,0.3);
  border-radius: var(--radius-lg);
  padding: var(--spacing-xl);
  box-shadow: 0 8px 32px rgba(0,0,0,0.1);
}

.floating-card h5 {
  color: var(--text-light);
  font-size: 1.25rem;
  margin-bottom: 0.5rem;
}

.floating-card small {
  color: rgba(255,255,255,0.8);
}

.floating-card p {
  color: rgba(255,255,255,0.9);
  font-size: 0.9375rem;
  margin: var(--spacing-md) 0;
}

.floating-card ul {
  margin-bottom: var(--spacing-lg);
}

.floating-card li {
  color: rgba(255,255,255,0.9);
  font-size: 0.875rem;
  margin-bottom: 0.75rem;
}

.floating-card .icon-modern {
  background: rgba(255,255,255,0.1);
  color: var(--text-light);
}

.floating-card .text-warning {
  color: #ffd43b !important;
}

/* Animated gradient text */
.gradient-text {
  background: linear-gradient(45deg, #ff6b6b, #4ecdc4, #45b7d1, #96ceb4);
  background-size: 400% 400%;
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  animation: gradientShift 4s ease-in-out infinite;
}

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

/* Cards - DigitalOcean style com melhor contraste */
.card-modern {
  background: white;
  border-radius: var(--radius-lg);
  border: 1px solid rgba(0,0,0,0.1);
  box-shadow: var(--shadow-soft);
  transition: all 0.2s ease;
  overflow: hidden;
  position: relative;
  height: 100%;
}

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

.card-modern .card-body {
  padding: var(--spacing-xl);
}

.card-modern .card-title {
  color: var(--text-primary);
  font-size: 1.25rem;
  font-weight: 600;
  margin-bottom: var(--spacing-md);
  letter-spacing: -0.01em;
}

.card-modern .card-text {
  color: var(--text-muted);
  font-size: 1rem;
  line-height: 1.7;
}

/* Card em fundo escuro */
.bg-dark .card-modern {
  background: rgba(255,255,255,0.03);
  border-color: rgba(255,255,255,0.1);
}

.bg-dark .card-modern:hover {
  background: rgba(255,255,255,0.05);
  border-color: var(--brand-accent);
}

.bg-dark .card-modern .card-title {
  color: var(--text-light);
}

.bg-dark .card-modern .card-text {
  color: rgba(255,255,255,0.8);
}

/* Feature cards */
.feature-card {
  background: white;
  border-radius: var(--radius-lg);
  padding: var(--spacing-xl);
  border: 1px solid rgba(0,0,0,0.08);
  transition: all 0.2s ease;
}

.feature-card:hover {
  background: var(--brand-muted);
  border-color: var(--brand-primary);
}

/* Icons - DigitalOcean style */
.icon-modern {
  width: 48px;
  height: 48px;
  background: var(--brand-muted);
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--brand-primary);
  font-size: 1.25rem;
  margin-bottom: var(--spacing-md);
  transition: all 0.2s ease;
}

.card-modern:hover .icon-modern {
  background: var(--brand-primary);
  color: white;
  transform: scale(1.1);
}

/* Stats counter - DigitalOcean style */
.stats-counter {
  font-size: 2.5rem;
  font-weight: 700;
  color: white;
  display: block;
  line-height: 1.2;
  margin-bottom: 0.5rem;
}

.stats-label {
  color: rgba(255,255,255,0.8);
  font-size: 0.875rem;
  font-weight: 500;
}

/* Feature highlights */
.feature-highlight {
  display: flex;
  align-items: flex-start;
  gap: var(--spacing-md);
  padding: var(--spacing-lg);
  border-radius: var(--radius-lg);
  transition: all 0.2s ease;
}

.feature-highlight:hover {
  background: var(--brand-muted);
}

.feature-highlight i {
  color: var(--brand-primary);
  font-size: 1.5rem;
}

/* Testimonials - DigitalOcean style */
.testimonial-card {
  background: white;
  border-radius: var(--radius-lg);
  padding: var(--spacing-xl);
  border: 1px solid rgba(0,0,0,0.08);
  box-shadow: var(--shadow-soft);
  height: 100%;
  transition: all 0.2s ease;
}

.testimonial-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-hover);
  border-color: rgba(0,105,255,0.2);
}

.testimonial-header {
  display: flex;
  align-items: center;
  gap: var(--spacing-md);
  margin-bottom: var(--spacing-lg);
}

.testimonial-avatar {
  width: 56px;
  height: 56px;
  border-radius: 50%;
  object-fit: cover;
  border: 2px solid var(--brand-primary);
}

.testimonial-info {
  flex: 1;
}

.testimonial-name {
  color: var(--brand-dark);
  font-weight: 600;
  font-size: 1.125rem;
  margin-bottom: 0.25rem;
}

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

.testimonial-content {
  color: var(--text-muted);
  font-size: 1rem;
  line-height: 1.7;
  margin-bottom: var(--spacing-lg);
}

.testimonial-rating {
  color: var(--brand-warning);
  font-size: 1.25rem;
  margin-bottom: var(--spacing-md);
}

/* Case study cards */
.case-study-card {
  background: white;
  border-radius: var(--radius-lg);
  overflow: hidden;
  border: 1px solid rgba(0,0,0,0.08);
  transition: all 0.2s ease;
}

.case-study-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-hover);
  border-color: rgba(0,105,255,0.2);
}

.case-study-image {
  width: 100%;
  height: 200px;
  object-fit: cover;
}

.case-study-content {
  padding: var(--spacing-xl);
}

.case-study-tag {
  display: inline-block;
  padding: 0.25rem 0.75rem;
  background: var(--brand-muted);
  color: var(--brand-primary);
  border-radius: var(--radius-sm);
  font-size: 0.875rem;
  font-weight: 500;
  margin-bottom: var(--spacing-md);
}

.case-study-title {
  color: var(--brand-dark);
  font-size: 1.25rem;
  font-weight: 600;
  margin-bottom: var(--spacing-md);
}

.case-study-description {
  color: var(--text-muted);
  font-size: 0.9375rem;
  line-height: 1.6;
  margin-bottom: var(--spacing-lg);
}

/* Pricing moderno */
.pricing-card {
  background: white;
  border-radius: 20px;
  padding: 2.5rem 2rem;
  box-shadow: var(--shadow-soft);
  position: relative;
  transition: all 0.3s ease;
}

.pricing-card.featured {
  background: var(--gradient-primary);
  color: white;
  transform: scale(1.05);
}

.pricing-card.featured::after {
  content: 'MAIS POPULAR';
  position: absolute;
  top: -10px;
  left: 50%;
  transform: translateX(-50%);
  background: var(--brand-warning);
  color: white;
  padding: 0.5rem 1rem;
  border-radius: 20px;
  font-size: 0.8rem;
  font-weight: 600;
}

/* Buttons - DigitalOcean style */
.btn-modern {
  background: var(--brand-primary);
  border: none;
  border-radius: var(--radius-md);
  padding: 0.75rem 1.5rem;
  font-weight: 500;
  font-size: 0.9375rem;
  line-height: 1.5;
  color: white;
  transition: all 0.2s ease;
  box-shadow: 0 1px 2px rgba(0,0,0,0.08);
}

.btn-modern:hover {
  background: #0052cc;
  transform: translateY(-1px);
  box-shadow: 0 4px 12px rgba(0,105,255,0.2);
}

.btn-modern:active {
  transform: translateY(0);
  box-shadow: none;
}

.btn-outline-modern {
  background: transparent;
  border: 1.5px solid var(--brand-primary);
  color: var(--brand-primary);
  border-radius: var(--radius-md);
  padding: 0.75rem 1.5rem;
  font-weight: 500;
  font-size: 0.9375rem;
  line-height: 1.5;
  transition: all 0.2s ease;
}

.btn-outline-modern:hover {
  background: var(--brand-primary);
  color: white;
  transform: translateY(-1px);
  box-shadow: 0 4px 12px rgba(0,105,255,0.1);
}

.btn-outline-modern:active {
  transform: translateY(0);
  box-shadow: none;
}

/* Link styles - Acessibilidade melhorada */
a {
  color: var(--brand-primary);
  text-decoration: underline;
  transition: color 0.2s ease;
}

/* Focus states para acessibilidade */
a:focus {
  outline: 2px solid var(--brand-primary);
  outline-offset: 2px;
  border-radius: 2px;
}

/* Links sem sublinhado em botões e navegação */
.btn a, .nav-link, .btn {
  text-decoration: none !important;
}

.btn:focus, .nav-link:focus {
  outline: 2px solid var(--brand-primary);
  outline-offset: 2px;
}

a:hover {
  color: #0052cc;
  text-decoration: none;
}

/* Chat widget */
.chat-widget {
  position: fixed;
  bottom: 30px;
  left: 20px;
  width: 60px;
  height: 60px;
  background: var(--gradient-success);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  color: white;
  font-size: 1.5rem;
  cursor: pointer;
  box-shadow: var(--shadow-soft);
  transition: all 0.3s ease;
  z-index: 1000;
  animation: pulse 2s infinite;
}

.chat-widget:hover {
  transform: scale(1.1);
}

/* Animations and transitions - DigitalOcean style */
@keyframes fadeIn {
  from { opacity: 0; transform: translateY(20px); }
  to { opacity: 1; transform: translateY(0); }
}

@keyframes slideIn {
  from { transform: translateX(-100%); }
  to { transform: translateX(0); }
}

@keyframes scaleIn {
  from { transform: scale(0.9); opacity: 0; }
  to { transform: scale(1); opacity: 1; }
}

@keyframes pulse {
  0% { box-shadow: 0 0 0 0 rgba(0, 105, 255, 0.4); }
  70% { box-shadow: 0 0 0 10px rgba(0, 105, 255, 0); }
  100% { box-shadow: 0 0 0 0 rgba(0, 105, 255, 0); }
}

/* Hover transitions */
.hover-lift {
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.hover-lift:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-hover);
}

.hover-scale {
  transition: transform 0.2s ease;
}

.hover-scale:hover {
  transform: scale(1.05);
}

/* Page transitions */
.page-transition {
  animation: fadeIn 0.6s ease-out;
}

/* Loading states */
.loading {
  position: relative;
  pointer-events: none;
}

.loading::after {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(255,255,255,0.8);
  backdrop-filter: blur(2px);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
  color: var(--brand-primary);
}

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

/* AOS custom animations */
[data-aos="fade-up"] {
  transform: translateY(30px);
  opacity: 0;
  transition: transform 0.6s ease, opacity 0.6s ease;
}

[data-aos="fade-up"].aos-animate {
  transform: translateY(0);
  opacity: 1;
}

[data-aos="fade-in"] {
  opacity: 0;
  transition: opacity 0.6s ease;
}

[data-aos="fade-in"].aos-animate {
  opacity: 1;
}

/* Button click effect */
.btn {
  position: relative;
  overflow: hidden;
}

.btn::after {
  content: '';
  position: absolute;
  top: 50%;
  left: 50%;
  width: 5px;
  height: 5px;
  background: rgba(255,255,255,0.5);
  opacity: 0;
  border-radius: 100%;
  transform: scale(1, 1) translate(-50%);
  transform-origin: 50% 50%;
}

.btn:active::after {
  animation: ripple 0.6s ease-out;
}

@keyframes ripple {
  0% {
    transform: scale(0, 0);
    opacity: 0.5;
  }
  100% {
    transform: scale(20, 20);
    opacity: 0;
  }
}

/* Seções com background patterns */
.section-pattern {
  position: relative;
  overflow: hidden;
}

.section-pattern::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background-image: 
    radial-gradient(circle at 25% 25%, rgba(13,110,253,0.1) 0%, transparent 50%),
    radial-gradient(circle at 75% 75%, rgba(0,194,255,0.1) 0%, transparent 50%);
  pointer-events: none;
}

/* Footer - DigitalOcean style */
.footer {
  background: var(--brand-dark);
  color: white;
  position: relative;
  padding: 4rem 0 2rem;
}

.footer::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 1px;
  background: rgba(255,255,255,0.1);
}

.footer-brand {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  margin-bottom: 1.5rem;
}

.footer-brand i {
  color: var(--brand-primary);
  font-size: 1.5rem;
}

.footer-brand span {
  color: white;
  font-size: 1.25rem;
  font-weight: 600;
}

.footer-description {
  color: rgba(255,255,255,0.7);
  font-size: 0.9375rem;
  line-height: 1.6;
  margin-bottom: 2rem;
}

.footer h6 {
  color: white;
  font-size: 1rem;
  font-weight: 600;
  margin-bottom: 1.25rem;
}

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

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

.footer-links a {
  color: rgba(255,255,255,0.7);
  font-size: 0.9375rem;
  text-decoration: none;
  transition: color 0.2s ease;
}

.footer-links a:hover {
  color: white;
}

.footer-social {
  display: flex;
  gap: 1rem;
}

.footer-social a {
  width: 36px;
  height: 36px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(255,255,255,0.1);
  color: white;
  border-radius: 50%;
  transition: all 0.2s ease;
}

.footer-social a:hover {
  background: var(--brand-primary);
  transform: translateY(-2px);
}

.footer-bottom {
  margin-top: 3rem;
  padding-top: 2rem;
  border-top: 1px solid rgba(255,255,255,0.1);
}

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

.footer-bottom-links a {
  color: rgba(255,255,255,0.7);
  font-size: 0.875rem;
  text-decoration: none;
  transition: color 0.2s ease;
}

.footer-bottom-links a:hover {
  color: white;
}

.footer-copyright {
  color: rgba(255,255,255,0.7);
  font-size: 0.875rem;
}

/* Forms - DigitalOcean style */
.form-control {
  border: 1.5px solid rgba(0,0,0,0.1);
  border-radius: var(--radius-md);
  padding: 0.75rem 1rem;
  font-size: 0.9375rem;
  line-height: 1.5;
  color: var(--brand-dark);
  transition: all 0.2s ease;
}

.form-control:focus {
  border-color: var(--brand-primary);
  box-shadow: 0 0 0 4px rgba(0,105,255,0.1);
}

.form-control::placeholder {
  color: var(--text-muted);
}

.form-label {
  color: var(--brand-dark);
  font-size: 0.9375rem;
  font-weight: 500;
  margin-bottom: 0.5rem;
}

.form-select {
  border: 1.5px solid rgba(0,0,0,0.1);
  border-radius: var(--radius-md);
  padding: 0.75rem 1rem;
  font-size: 0.9375rem;
  line-height: 1.5;
  color: var(--brand-dark);
  transition: all 0.2s ease;
  background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 16 16'%3e%3cpath fill='none' stroke='%23343a40' stroke-linecap='round' stroke-linejoin='round' stroke-width='2' d='M2 5l6 6 6-6'/%3e%3c/svg%3e");
  background-repeat: no-repeat;
  background-position: right 1rem center;
  background-size: 16px 12px;
}

.form-select:focus {
  border-color: var(--brand-primary);
  box-shadow: 0 0 0 4px rgba(0,105,255,0.1);
}

.form-check-input {
  width: 1.25rem;
  height: 1.25rem;
  margin-top: 0.25rem;
  border: 1.5px solid rgba(0,0,0,0.2);
  transition: all 0.2s ease;
}

.form-check-input:checked {
  background-color: var(--brand-primary);
  border-color: var(--brand-primary);
}

.form-check-input:focus {
  border-color: var(--brand-primary);
  box-shadow: 0 0 0 4px rgba(0,105,255,0.1);
}

.form-check-label {
  padding-left: 0.5rem;
  color: var(--text-muted);
}

.invalid-feedback {
  color: #dc3545;
  font-size: 0.875rem;
  margin-top: 0.25rem;
}

/* Loading animation */
.loading-overlay {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: white;
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 9999;
  transition: opacity 0.5s ease;
}

.loader {
  width: 50px;
  height: 50px;
  border: 3px solid #f3f3f3;
  border-top: 3px solid var(--brand-primary);
  border-radius: 50%;
  animation: spin 1s linear infinite;
}

@keyframes spin {
  0% { transform: rotate(0deg); }
  100% { transform: rotate(360deg); }
}

/* Responsive styles - DigitalOcean approach */
@media (max-width: 1199.98px) {
  :root {
    --spacing-xl: 1.75rem;
  }

  .hero {
    min-height: 75vh;
    padding: 3rem 0;
  }

  .hero h1 {
    font-size: clamp(2.2rem, 4vw, 3rem);
  }

  .case-study-image {
    height: 180px;
  }
}

@media (max-width: 991.98px) {
  :root {
    --spacing-xl: 1.5rem;
    --font-size-base: 13px;
  }

  .navbar {
    padding: 0.75rem 0;
  }

  .hero {
    min-height: 70vh;
  }

  .floating-card {
    margin-top: 2rem;
  }

  .testimonial-card,
  .case-study-card {
    margin-bottom: 1.5rem;
  }

  .footer {
    padding: 3rem 0 1.5rem;
  }

  .footer-bottom-links {
    gap: 1.5rem;
  }
}

@media (max-width: 767.98px) {
  :root {
    --spacing-lg: 1.25rem;
    --spacing-xl: 1.5rem;
  }

  .hero {
    min-height: auto;
    padding: 7rem 0 3rem;
    text-align: center;
  }

  .hero-content {
    margin-bottom: 2rem;
    padding-top: 2rem;
  }

  .hero h1 {
    margin-top: 1.5rem;
    padding: 0 1rem;
  }

  .hero .lead {
    font-size: 1.125rem;
  }

  .stats-counter {
    font-size: 2rem;
  }

  .feature-highlight {
    padding: var(--spacing-md);
  }

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

  .case-study-content {
    padding: var(--spacing-lg);
  }

  .footer-social {
    justify-content: center;
    margin-bottom: 2rem;
  }

  .footer-bottom-links {
    flex-direction: column;
    gap: 1rem;
    text-align: center;
  }

  .footer-copyright {
    text-align: center;
    margin-bottom: 1rem;
  }
}

@media (max-width: 575.98px) {
  :root {
    --font-size-base: 12px;
    --spacing-lg: 1rem;
    --spacing-xl: 1.25rem;
  }

  .navbar-brand {
    font-size: 1.125rem;
  }

  .hero h1 {
    font-size: clamp(1.8rem, 4vw, 2.5rem);
  }

  .hero .badge {
    font-size: 0.875rem;
    padding: 0.5rem 1rem;
  }

  .btn-modern,
  .btn-outline-modern {
    width: 100%;
    margin-bottom: 0.5rem;
  }

  .icon-modern {
    width: 40px;
    height: 40px;
    font-size: 1.125rem;
  }

  .testimonial-avatar {
    width: 48px;
    height: 48px;
  }

  .case-study-image {
    height: 160px;
  }

  .chat-widget {
    bottom: 1rem;
    left: 0.5rem;
    width: 44px;
    height: 44px;
    font-size: 1.125rem;
  }
}

/* Scroll indicators */
.scroll-indicator {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 4px;
  background: rgba(13,110,253,0.2);
  z-index: 1000;
}

.scroll-progress {
  height: 100%;
  background: var(--gradient-primary);
  transition: width 0.1s ease;
}