/* Светлая тема NordVPN */
:root {
  --nv-primary: #00A9CE;
  --nv-primary-dark: #0088A8;
  --nv-danger: #EF4444;
  --nv-danger-dark: #DC2626;
  --nv-bg-light: #FFFFFF;
  --nv-bg-gray: #F8F9FA;
  --nv-text-dark: #1A1A1A;
  --nv-text-muted: #6B7280;
  --nv-border: #E5E7EB;
  --nv-shadow: rgba(0, 0, 0, 0.1);
  --nv-shadow-lg: rgba(0, 0, 0, 0.15);
}

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

html {
  scroll-behavior: smooth;
}

body {
  background-color: var(--nv-bg-light);
  color: var(--nv-text-dark);
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Roboto', 'Oxygen', 'Ubuntu', 'Cantarell', 'Fira Sans', 'Droid Sans', 'Helvetica Neue', sans-serif;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* Header */
.nv-header {
  background-color: var(--nv-bg-light);
  border-bottom: 1px solid var(--nv-border);
  box-shadow: 0 2px 8px var(--nv-shadow);
  transition: all 0.3s ease;
}

.nv-header.scrolled {
  box-shadow: 0 4px 12px var(--nv-shadow-lg);
}

.nv-logo {
  height: 32px;
  width: auto;
  transition: transform 0.3s ease;
}

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

.navbar-nav .nav-link {
  color: var(--nv-text-dark) !important;
  font-weight: 500;
  padding: 0.5rem 1rem !important;
  transition: color 0.3s ease;
  position: relative;
}

.navbar-nav .nav-link::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 50%;
  width: 0;
  height: 2px;
  background-color: var(--nv-primary);
  transition: all 0.3s ease;
  transform: translateX(-50%);
}

.navbar-nav .nav-link:hover::after,
.navbar-nav .nav-link.active::after {
  width: 80%;
}

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

/* CTA Buttons */
.nv-cta {
  transition: all 0.3s ease;
  font-weight: 600;
  border-radius: 8px;
}

.nv-cta:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 16px rgba(0, 169, 206, 0.3);
}

.nv-pulse {
  animation: pulse 2s infinite;
}

@keyframes pulse {
  0%, 100% {
    box-shadow: 0 0 0 0 rgba(239, 68, 68, 0.7);
  }
  50% {
    box-shadow: 0 0 0 10px rgba(239, 68, 68, 0);
  }
}

/* Hero Section */
.nv-hero {
  background: linear-gradient(135deg, #F0F9FF 0%, #E0F2FE 50%, #FFFFFF 100%);
  position: relative;
  overflow: hidden;
}

.nv-hero-bg {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: 
    radial-gradient(circle at 20% 50%, rgba(0, 169, 206, 0.1) 0%, transparent 50%),
    radial-gradient(circle at 80% 80%, rgba(239, 68, 68, 0.1) 0%, transparent 50%);
  pointer-events: none;
  z-index: 0;
}

.nv-hero > .container {
  position: relative;
  z-index: 1;
}

.nv-badge {
  animation: fadeInDown 0.6s ease;
}

.nv-hero-list {
  animation: fadeInUp 0.8s ease;
}

.nv-check-icon {
  flex-shrink: 0;
  animation: scaleIn 0.5s ease;
}

.nv-hero-image {
  animation: fadeInRight 1s ease;
}

.nv-img-animate {
  transition: transform 0.3s ease;
}

.nv-img-animate:hover {
  transform: scale(1.02);
}

.nv-floating-badge {
  animation: float 3s ease-in-out infinite;
}

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

@keyframes fadeInDown {
  from {
    opacity: 0;
    transform: translateY(-20px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(20px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes fadeInRight {
  from {
    opacity: 0;
    transform: translateX(20px);
  }
  to {
    opacity: 1;
    transform: translateX(0);
  }
}

@keyframes scaleIn {
  from {
    opacity: 0;
    transform: scale(0.8);
  }
  to {
    opacity: 1;
    transform: scale(1);
  }
}

/* Feature Cards */
.nv-feature-card {
  transition: all 0.3s ease;
  border: 1px solid var(--nv-border);
}

.nv-feature-card:hover {
  transform: translateY(-8px);
  box-shadow: 0 12px 24px var(--nv-shadow-lg);
  border-color: var(--nv-primary);
}

.nv-feature-icon img {
  transition: transform 0.3s ease;
}

.nv-feature-card:hover .nv-feature-icon img {
  transform: scale(1.1);
}

/* Section Backgrounds */
.nv-section-bg {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: 
    radial-gradient(circle at 30% 50%, rgba(255, 255, 255, 0.1) 0%, transparent 50%),
    radial-gradient(circle at 70% 50%, rgba(255, 255, 255, 0.1) 0%, transparent 50%);
  pointer-events: none;
  z-index: 0;
}

/* Stats Card */
.nv-stats-card {
  animation: slideInUp 0.8s ease;
  border: 2px solid var(--nv-primary);
}

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

.nv-threat-stats {
  animation: fadeInLeft 0.8s ease;
}

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

.nv-stat-item {
  transition: all 0.3s ease;
  border: 1px solid var(--nv-border);
}

.nv-stat-item:hover {
  transform: translateX(10px);
  box-shadow: 0 8px 16px var(--nv-shadow);
  border-color: var(--nv-primary);
}

/* Testimonial Cards */
.nv-testimonial-card {
  transition: all 0.3s ease;
  border: 1px solid var(--nv-border);
}

.nv-testimonial-card:hover {
  transform: translateY(-5px);
  box-shadow: 0 10px 20px var(--nv-shadow-lg);
  border-color: var(--nv-primary);
}

/* Device Cards */
.nv-device-card {
  transition: all 0.3s ease;
  border: 1px solid var(--nv-border);
}

.nv-device-card:hover {
  transform: translateY(-8px) scale(1.02);
  box-shadow: 0 12px 24px var(--nv-shadow-lg);
  border-color: var(--nv-primary);
}

.nv-device-icon img {
  transition: transform 0.3s ease;
}

.nv-device-card:hover .nv-device-icon img {
  transform: scale(1.15) rotate(5deg);
}

/* Icon Wrapper */
.nv-icon-wrapper {
  width: 80px;
  height: 80px;
  border-radius: 12px;
  overflow: hidden;
  flex-shrink: 0;
  transition: transform 0.3s ease;
}

.nv-icon-wrapper:hover {
  transform: scale(1.1) rotate(5deg);
}

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

/* Feature Image */
.nv-feature-image {
  animation: fadeInLeft 1s ease;
}

.nv-feature-image img {
  transition: transform 0.3s ease;
}

.nv-feature-image:hover img {
  transform: scale(1.05);
}

/* Accordion */
.accordion-item {
  transition: all 0.3s ease;
}

.accordion-item:hover {
  box-shadow: 0 4px 8px var(--nv-shadow);
}

.accordion-button {
  font-weight: 600;
  color: var(--nv-text-dark);
}

.accordion-button:not(.collapsed) {
  background-color: var(--nv-bg-gray);
  color: var(--nv-primary);
}

.accordion-button:focus {
  box-shadow: 0 0 0 0.25rem rgba(0, 169, 206, 0.25);
  border-color: var(--nv-primary);
}

/* Footer */
.nv-footer {
  background: linear-gradient(135deg, #1A1A1A 0%, #2D2D2D 100%);
  border-top: 1px solid rgba(255, 255, 255, 0.1);
}

.nv-footer a {
  transition: color 0.3s ease;
}

.nv-footer a:hover {
  color: var(--nv-primary) !important;
}

.nv-footer svg {
  transition: transform 0.3s ease;
}

.nv-footer a:hover svg {
  transform: scale(1.2);
}

/* Buttons */
.btn-primary {
  background-color: var(--nv-primary);
  border-color: var(--nv-primary);
  color: white;
}

.btn-primary:hover {
  background-color: var(--nv-primary-dark);
  border-color: var(--nv-primary-dark);
  color: white;
}

.btn-danger {
  background-color: var(--nv-danger);
  border-color: var(--nv-danger);
  color: white;
}

.btn-danger:hover {
  background-color: var(--nv-danger-dark);
  border-color: var(--nv-danger-dark);
  color: white;
}

.btn-outline-primary {
  color: var(--nv-primary);
  border-color: var(--nv-primary);
}

.btn-outline-primary:hover {
  background-color: var(--nv-primary);
  border-color: var(--nv-primary);
  color: white;
}

/* Scroll Animations */
[data-aos] {
  pointer-events: none;
}

[data-aos].aos-animate {
  pointer-events: auto;
}

/* Responsive */
@media (max-width: 768px) {
  .display-3 {
    font-size: 2rem;
  }

  .display-5 {
    font-size: 1.75rem;
  }

  .nv-hero {
    padding: 3rem 0 !important;
  }

  .nv-feature-card,
  .nv-device-card,
  .nv-testimonial-card {
    margin-bottom: 1.5rem;
  }
}

/* Loading Animation */
@keyframes shimmer {
  0% {
    background-position: -1000px 0;
  }
  100% {
    background-position: 1000px 0;
  }
}

.nv-loading {
  animation: shimmer 2s infinite;
  background: linear-gradient(
    to right,
    #f0f0f0 0%,
    #e0e0e0 20%,
    #f0f0f0 40%,
    #f0f0f0 100%
  );
  background-size: 1000px 100%;
}

/* Gradient Text */
.nv-gradient-text {
  background: linear-gradient(135deg, var(--nv-primary) 0%, var(--nv-danger) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

/* Smooth Transitions */
img {
  transition: opacity 0.3s ease;
}

img[loading="lazy"] {
  opacity: 0;
  animation: fadeIn 0.5s ease forwards;
}

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

/* Custom Scrollbar */
::-webkit-scrollbar {
  width: 10px;
}

::-webkit-scrollbar-track {
  background: var(--nv-bg-gray);
}

::-webkit-scrollbar-thumb {
  background: var(--nv-primary);
  border-radius: 5px;
}

::-webkit-scrollbar-thumb:hover {
  background: var(--nv-primary-dark);
}

/* Utility Classes */
.text-white-50 {
  color: rgba(255, 255, 255, 0.5) !important;
}

.border-secondary {
  border-color: rgba(255, 255, 255, 0.1) !important;
}

/* Animation Delays */
[data-aos-delay="100"] {
  transition-delay: 0.1s;
}

[data-aos-delay="200"] {
  transition-delay: 0.2s;
}

[data-aos-delay="300"] {
  transition-delay: 0.3s;
}

[data-aos-delay="400"] {
  transition-delay: 0.4s;
}

[data-aos-delay="500"] {
  transition-delay: 0.5s;
}

[data-aos-delay="600"] {
  transition-delay: 0.6s;
}