/* Vivan Laptop Solutions - Global Styles & Design System */
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700&family=Outfit:wght@400;500;600;700;800&display=swap');

:root {
  /* Color System */
  --primary: #004a8b;
  --primary-hover: #003767;
  --primary-rgb: 0, 74, 139;
  --secondary: #00a2e8;
  --secondary-rgb: 0, 162, 232;
  
  --bg-main: #f8fafd;
  --bg-card: #ffffff;
  --bg-card-hover: #f0f5fc;
  
  --text-dark: #1e293b;
  --text-light: #64748b;
  --text-muted: #94a3b8;
  --text-on-primary: #ffffff;
  
  --border: #e2e8f0;
  --border-focus: #93c5fd;
  
  --success: #10b981;
  --warning: #f59e0b;
  --danger: #ef4444;
  
  /* Shadows */
  --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
  --shadow-md: 0 4px 6px -1px rgba(0, 74, 139, 0.05), 0 2px 4px -1px rgba(0, 74, 139, 0.03);
  --shadow-lg: 0 10px 15px -3px rgba(0, 74, 139, 0.08), 0 4px 6px -2px rgba(0, 74, 139, 0.04);
  --shadow-glow: 0 0 20px rgba(0, 162, 232, 0.25);
  
  /* Border Radius */
  --radius-sm: 6px;
  --radius-md: 12px;
  --radius-lg: 20px;
  --radius-full: 9999px;
  
  /* Fonts */
  --font-heading: 'Outfit', sans-serif;
  --font-body: 'Inter', sans-serif;
  
  /* Transitions */
  --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-slow: all 0.5s cubic-bezier(0.4, 0, 0.2, 1);
}

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

html {
  scroll-behavior: smooth;
  font-size: 16px;
  -webkit-text-size-adjust: 100%;
}

body {
  font-family: var(--font-body);
  background-color: var(--bg-main);
  color: var(--text-dark);
  line-height: 1.6;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}

h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-heading);
  color: var(--text-dark);
  font-weight: 700;
  line-height: 1.25;
}

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

img, video {
  max-width: 100%;
  height: auto;
  display: block;
}

button, input, select, textarea {
  font-family: inherit;
  font-size: inherit;
  color: inherit;
  background: none;
  border: none;
  outline: none;
}

button {
  cursor: pointer;
}

/* Scrollbar Customization */
::-webkit-scrollbar {
  width: 10px;
}
::-webkit-scrollbar-track {
  background: var(--bg-main);
}
::-webkit-scrollbar-thumb {
  background: #cbd5e1;
  border-radius: var(--radius-full);
  border: 2px solid var(--bg-main);
}
::-webkit-scrollbar-thumb:hover {
  background: var(--text-light);
}

/* Typography Helpers */
.title-xl { font-size: 3rem; font-weight: 800; letter-spacing: -0.025em; }
.title-lg { font-size: 2.25rem; font-weight: 700; letter-spacing: -0.02em; }
.title-md { font-size: 1.75rem; font-weight: 600; }
.title-sm { font-size: 1.25rem; font-weight: 600; }
.text-body-lg { font-size: 1.125rem; color: var(--text-light); }
.text-body { font-size: 1rem; color: var(--text-light); }
.text-body-sm { font-size: 0.875rem; color: var(--text-light); }
.text-gradient {
  background: linear-gradient(135deg, var(--primary), var(--secondary));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  display: inline-block;
}

/* Section Styling */
.section {
  padding: 80px 20px;
  position: relative;
}
.section-header {
  text-align: center;
  max-width: 600px;
  margin: 0 auto 60px;
}
.section-header h2 {
  margin-bottom: 16px;
}
.section-header p {
  color: var(--text-light);
}

/* Container */
.container {
  max-width: 1200px;
  margin: 0 auto;
  width: 100%;
}

/* Interactive Components & Utility Classes */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 12px 28px;
  font-weight: 600;
  border-radius: var(--radius-full);
  transition: var(--transition);
  font-family: var(--font-heading);
  gap: 8px;
}
.btn-primary {
  background-color: var(--primary);
  color: var(--text-on-primary);
  box-shadow: 0 4px 14px rgba(0, 74, 139, 0.3);
}
.btn-primary:hover {
  background-color: var(--primary-hover);
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(0, 74, 139, 0.4);
}
.btn-secondary {
  background-color: transparent;
  color: var(--primary);
  border: 2px solid var(--primary);
}
.btn-secondary:hover {
  background-color: rgba(0, 74, 139, 0.05);
  transform: translateY(-2px);
}
.btn-white {
  background-color: #ffffff;
  color: var(--primary);
  box-shadow: var(--shadow-md);
}
.btn-white:hover {
  background-color: var(--bg-main);
  transform: translateY(-2px);
  box-shadow: var(--shadow-lg);
}

/* Sticky Header / Navigation */
.header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  z-index: 1000;
  background-color: rgba(248, 250, 253, 0.8);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid rgba(226, 232, 240, 0.5);
  transition: var(--transition);
}
.header.scrolled {
  background-color: rgba(255, 255, 255, 0.95);
  box-shadow: var(--shadow-md);
  border-bottom-color: var(--border);
}
.nav-container {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 16px 24px;
  max-width: 1200px;
  margin: 0 auto;
}
.logo {
  display: flex;
  align-items: center;
  gap: 12px;
}
.logo-img {
  height: 48px;
  width: auto;
  object-fit: contain;
}
.nav-links {
  display: flex;
  align-items: center;
  list-style: none;
  gap: 32px;
}
.nav-link {
  font-weight: 500;
  font-family: var(--font-heading);
  position: relative;
  padding: 8px 0;
}
.nav-link::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0;
  height: 2px;
  background-color: var(--primary);
  transition: var(--transition);
}
.nav-link:hover, .nav-link.active {
  color: var(--primary);
}
.nav-link:hover::after, .nav-link.active::after {
  width: 100%;
}
.nav-cta {
  display: flex;
  align-items: center;
}

/* Mobile Nav Toggle */
.nav-toggle {
  display: none;
  flex-direction: column;
  justify-content: space-between;
  width: 30px;
  height: 20px;
  background: transparent;
  border: none;
  cursor: pointer;
  z-index: 1001;
}
.nav-toggle span {
  display: block;
  width: 100%;
  height: 3px;
  background-color: var(--primary);
  border-radius: var(--radius-full);
  transition: var(--transition);
}

/* Header Spacer for Content */
.header-spacer {
  height: 80px;
}

/* Card Designs with Micro-animations */
.card {
  background: var(--bg-card);
  border-radius: var(--radius-md);
  border: 1px solid var(--border);
  padding: 30px;
  box-shadow: var(--shadow-sm);
  transition: var(--transition);
  position: relative;
  overflow: hidden;
}
.card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 4px;
  background: linear-gradient(90deg, var(--primary), var(--secondary));
  opacity: 0;
  transition: var(--transition);
}
.card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-lg);
  border-color: var(--border-focus);
}
.card:hover::before {
  opacity: 1;
}

/* Footer Section */
.footer {
  background-color: #0f172a;
  color: #94a3b8;
  padding: 80px 20px 30px;
  border-top: 1px solid #1e293b;
}
.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1.5fr;
  gap: 40px;
  margin-bottom: 60px;
}
.footer-brand {
  display: flex;
  flex-direction: column;
  gap: 20px;
}
.footer-logo {
  display: flex;
  align-items: center;
  gap: 12px;
}
.footer-logo-img {
  height: 48px;
  background-color: #ffffff;
  padding: 4px;
  border-radius: var(--radius-sm);
}
.footer-logo-text {
  font-family: var(--font-heading);
  color: #ffffff;
  font-weight: 700;
  font-size: 1.25rem;
}
.footer-desc {
  font-size: 0.95rem;
  line-height: 1.6;
}
.footer-title {
  color: #ffffff;
  font-family: var(--font-heading);
  font-size: 1.1rem;
  margin-bottom: 24px;
  position: relative;
  padding-bottom: 8px;
}
.footer-title::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 30px;
  height: 2px;
  background-color: var(--secondary);
}
.footer-links {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 12px;
}
.footer-link a {
  transition: var(--transition);
}
.footer-link a:hover {
  color: #ffffff;
  padding-left: 4px;
}
.footer-contact {
  display: flex;
  flex-direction: column;
  gap: 16px;
  font-size: 0.95rem;
}
.footer-contact-item {
  display: flex;
  gap: 12px;
  align-items: flex-start;
}
.footer-contact-item svg {
  flex-shrink: 0;
  width: 20px;
  height: 20px;
  color: var(--secondary);
  margin-top: 3px;
}
.footer-bottom {
  border-top: 1px solid #1e293b;
  padding-top: 30px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 20px;
  font-size: 0.875rem;
}
.footer-socials {
  display: flex;
  gap: 16px;
}
.footer-social-icon {
  width: 36px;
  height: 36px;
  border-radius: var(--radius-full);
  background-color: #1e293b;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: var(--transition);
  color: #ffffff;
}
.footer-social-icon:hover {
  background-color: var(--primary);
  transform: scale(1.1);
}

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

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

.reveal {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.8s ease, transform 0.8s ease;
}
.reveal.active {
  opacity: 1;
  transform: translateY(0);
}

/* Hero Section with Video Background */
.hero {
  position: relative;
  min-height: calc(100vh - 80px);
  display: flex;
  align-items: center;
  overflow: hidden;
  color: #ffffff;
  padding: 80px 20px;
}
.hero-video-container {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  z-index: 1;
  overflow: hidden;
}
.hero-video-container iframe,
.hero-video-container video {
  position: absolute;
  top: 50%;
  left: 50%;
  width: 100%;
  height: 100%;
  object-fit: cover;
  transform: translate(-50%, -50%);
  pointer-events: none;
}
.hero-overlay {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: linear-gradient(135deg, rgba(0, 74, 139, 0.9) 0%, rgba(15, 23, 42, 0.75) 50%, rgba(0, 162, 232, 0.3) 100%);
  z-index: 2;
}
.hero-content {
  position: relative;
  z-index: 3;
  max-width: 700px;
  width: 100%;
  animation: fadeInUp 0.8s ease;
}
.hero-content h1 {
  color: #ffffff;
  margin-bottom: 24px;
  line-height: 1.15;
}
.hero-content p {
  color: rgba(255, 255, 255, 0.9);
  margin-bottom: 40px;
}
.hero-actions {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
}

/* Stats Banner */
.stats-banner {
  background-color: var(--bg-card);
  border-bottom: 1px solid var(--border);
  position: relative;
  z-index: 10;
  margin-top: -40px;
  border-radius: var(--radius-md) var(--radius-md) 0 0;
  box-shadow: var(--shadow-lg);
  padding: 40px;
}
.stats-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 30px;
  text-align: center;
}
.stat-item {
  border-right: 1px solid var(--border);
}
.stat-item:last-child {
  border-right: none;
}
.stat-number {
  font-size: 2.75rem;
  font-weight: 800;
  font-family: var(--font-heading);
  color: var(--primary);
  line-height: 1;
  margin-bottom: 8px;
}
.stat-label {
  font-size: 0.95rem;
  color: var(--text-light);
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

/* Services Grid */
.services-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: 30px;
}
.service-icon-wrapper {
  width: 60px;
  height: 60px;
  background-color: rgba(0, 162, 232, 0.1);
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--primary);
  margin-bottom: 24px;
  transition: var(--transition);
}
.card:hover .service-icon-wrapper {
  background-color: var(--primary);
  color: #ffffff;
  transform: scale(1.05);
}
.service-icon-wrapper svg {
  width: 32px;
  height: 32px;
}
.service-title {
  margin-bottom: 12px;
}
.service-link {
  display: inline-flex;
  align-items: center;
  margin-top: 20px;
  color: var(--primary);
  font-weight: 600;
  font-size: 0.95rem;
}
.service-link svg {
  width: 16px;
  height: 16px;
  margin-left: 6px;
  transition: var(--transition);
}
.card:hover .service-link svg {
  transform: translateX(4px);
}

/* Why Choose Us Grid */
.features-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 30px;
}
.feature-item {
  display: flex;
  gap: 16px;
}
.feature-icon {
  flex-shrink: 0;
  width: 48px;
  height: 48px;
  background-color: rgba(0, 74, 139, 0.05);
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--primary);
}
.feature-icon svg {
  width: 24px;
  height: 24px;
}
.feature-content h3 {
  font-size: 1.15rem;
  margin-bottom: 8px;
}

/* Repair Process Timeline */
.process-timeline {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 30px;
  position: relative;
  margin-top: 40px;
}
.process-timeline::before {
  content: '';
  position: absolute;
  top: 30px;
  left: 5%;
  right: 5%;
  height: 2px;
  background-color: var(--border);
  z-index: 1;
}
.process-step {
  text-align: center;
  position: relative;
  z-index: 2;
}
.process-badge {
  width: 60px;
  height: 60px;
  background-color: var(--bg-card);
  border: 2px solid var(--border);
  border-radius: var(--radius-full);
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-heading);
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--primary);
  margin: 0 auto 20px;
  box-shadow: var(--shadow-sm);
  transition: var(--transition);
}
.process-step:hover .process-badge {
  border-color: var(--primary);
  background-color: var(--primary);
  color: #ffffff;
  transform: scale(1.1);
  box-shadow: var(--shadow-glow);
}
.process-title {
  font-size: 1.1rem;
  margin-bottom: 8px;
}
.process-desc {
  font-size: 0.9rem;
}

/* Testimonials Carousel */
.testimonials-section {
  background-color: var(--bg-card-hover);
}
.testimonials-container {
  max-width: 800px;
  margin: 0 auto;
  position: relative;
  padding: 0 40px;
}
.testimonials-slider {
  min-height: 220px;
}
.testimonial-slide {
  display: none;
  text-align: center;
}
.testimonial-stars {
  display: flex;
  justify-content: center;
  gap: 4px;
  margin-bottom: 20px;
  color: var(--warning);
}
.testimonial-stars svg {
  width: 20px;
  height: 20px;
}
.testimonial-quote {
  font-size: 1.25rem;
  color: var(--text-dark);
  font-style: italic;
  margin-bottom: 24px;
  line-height: 1.6;
}
.testimonial-author {
  font-family: var(--font-heading);
}
.testimonial-name {
  font-weight: 700;
  color: var(--primary);
}
.testimonial-location {
  font-size: 0.85rem;
  color: var(--text-light);
  margin-top: 2px;
}
.slider-nav {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  width: 44px;
  height: 44px;
  border-radius: var(--radius-full);
  background-color: var(--bg-card);
  border: 1px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: var(--shadow-sm);
  color: var(--text-dark);
  transition: var(--transition);
}
.slider-nav:hover {
  background-color: var(--primary);
  color: #ffffff;
  border-color: var(--primary);
}
.slider-prev { left: -20px; }
.slider-next { right: -20px; }
.slider-dots {
  display: flex;
  justify-content: center;
  gap: 8px;
  margin-top: 30px;
}
.slider-dot {
  width: 10px;
  height: 10px;
  border-radius: var(--radius-full);
  background-color: var(--border);
  cursor: pointer;
  transition: var(--transition);
}
.slider-dot.active {
  background-color: var(--primary);
  width: 24px;
}

/* Diagnostic Wizard (Services page) */
.wizard-container {
  background-color: var(--bg-card);
  border-radius: var(--radius-lg);
  border: 1px solid var(--border);
  box-shadow: var(--shadow-lg);
  padding: 40px;
  margin-top: 40px;
}
.wizard-progress {
  display: flex;
  justify-content: space-between;
  margin-bottom: 40px;
  position: relative;
}
.wizard-progress::before {
  content: '';
  position: absolute;
  top: 50%;
  left: 0;
  width: 100%;
  height: 2px;
  background-color: var(--border);
  z-index: 1;
}
.wizard-step {
  display: none;
  animation: fadeIn 0.4s ease;
}
.wizard-step.active {
  display: block;
}
.wizard-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 20px;
  margin-bottom: 30px;
}
.wizard-option {
  border: 2px solid var(--border);
  border-radius: var(--radius-md);
  padding: 24px;
  text-align: center;
  cursor: pointer;
  transition: var(--transition);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 16px;
}
.wizard-option svg {
  width: 48px;
  height: 48px;
  color: var(--text-light);
  transition: var(--transition);
}
.wizard-option:hover {
  border-color: var(--border-focus);
  background-color: var(--bg-card-hover);
  transform: translateY(-2px);
}
.wizard-option.selected {
  border-color: var(--primary);
  background-color: rgba(0, 74, 139, 0.05);
}
.wizard-option.selected svg {
  color: var(--primary);
}
.wizard-option-title {
  font-weight: 600;
  font-family: var(--font-heading);
}
.wizard-actions {
  display: flex;
  justify-content: space-between;
  margin-top: 30px;
  border-top: 1px solid var(--border);
  padding-top: 20px;
}

/* Contact cards & Booking Form */
.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1.5fr;
  gap: 40px;
}
.contact-info-panel {
  display: flex;
  flex-direction: column;
  gap: 24px;
}
.contact-detail-card {
  display: flex;
  gap: 16px;
  align-items: flex-start;
  padding: 24px;
  background-color: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-sm);
}
.contact-detail-icon {
  flex-shrink: 0;
  width: 44px;
  height: 44px;
  background-color: rgba(0, 74, 139, 0.05);
  color: var(--primary);
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
}
.contact-detail-icon svg {
  width: 22px;
  height: 22px;
}
.contact-detail-content h3 {
  font-size: 1.05rem;
  margin-bottom: 4px;
}
.contact-detail-content p, .contact-detail-content a {
  color: var(--text-light);
  font-size: 0.95rem;
}
.contact-detail-content a:hover {
  color: var(--primary);
}
.booking-form-panel {
  background-color: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-md);
  padding: 36px;
}
.form-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
  margin-bottom: 24px;
}
.form-group {
  display: flex;
  flex-direction: column;
  gap: 8px;
}
.form-group.full-width {
  grid-column: 1 / -1;
}
.form-label {
  font-weight: 600;
  font-size: 0.9rem;
  color: var(--text-dark);
}
.form-control {
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 12px 16px;
  transition: var(--transition);
  background-color: var(--bg-main);
}
.form-control:focus {
  border-color: var(--primary);
  background-color: #ffffff;
  box-shadow: 0 0 0 3px rgba(0, 74, 139, 0.1);
}
textarea.form-control {
  resize: vertical;
  min-height: 120px;
}

/* Map Section */
.map-container {
  border-radius: var(--radius-md);
  overflow: hidden;
  box-shadow: var(--shadow-md);
  border: 1px solid var(--border);
  height: 400px;
  margin-top: 40px;
}
.map-container iframe {
  width: 100%;
  height: 100%;
  border: none;
}

/* Responsive Media Queries */
@media (max-width: 992px) {
  .footer-grid {
    grid-template-columns: 1fr 1fr;
  }
  .title-xl {
    font-size: 2.5rem;
  }
  .contact-grid {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 768px) {
  .nav-toggle {
    display: flex;
  }
  .nav-links {
    position: fixed;
    top: 80px;
    left: -100%;
    width: 100%;
    height: calc(100vh - 80px);
    background-color: var(--bg-card);
    flex-direction: column;
    padding: 40px;
    gap: 24px;
    transition: var(--transition-slow);
    box-shadow: var(--shadow-lg);
    z-index: 999;
  }
  .nav-links.open {
    left: 0;
  }
  .nav-cta {
    display: none;
  }
  .footer-grid {
    grid-template-columns: 1fr;
    gap: 30px;
  }
  .title-xl {
    font-size: 2.25rem;
  }
  .section {
    padding: 60px 15px;
  }
  .stats-banner {
    margin-top: 0;
    padding: 24px;
  }
  .stats-grid {
    grid-template-columns: 1fr;
    gap: 20px;
  }
  .stat-item {
    border-right: none;
    border-bottom: 1px solid var(--border);
    padding-bottom: 16px;
  }
  .stat-item:last-child {
    border-bottom: none;
    padding-bottom: 0;
  }
  .process-timeline {
    grid-template-columns: 1fr;
    gap: 40px;
  }
  .process-timeline::before {
    display: none;
  }
  .process-step {
    display: flex;
    text-align: left;
    align-items: flex-start;
    gap: 16px;
  }
  .process-badge {
    margin: 0;
    flex-shrink: 0;
  }
  .form-grid {
    grid-template-columns: 1fr;
    gap: 16px;
  }
  .wizard-container {
    padding: 20px;
  }
}

/* Floating Action Buttons */
.floating-actions {
  position: fixed;
  bottom: 30px;
  right: 30px;
  display: flex;
  flex-direction: column;
  gap: 16px;
  z-index: 999;
}
.floating-btn {
  width: 56px;
  height: 56px;
  border-radius: var(--radius-full);
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 4px 14px rgba(0, 0, 0, 0.15);
  transition: var(--transition);
  cursor: pointer;
  color: #ffffff;
}
.btn-top {
  background-color: var(--primary);
  border: 1px solid rgba(255, 255, 255, 0.1);
  opacity: 0;
  visibility: hidden;
  transform: translateY(10px);
}
.btn-top.show {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}
.btn-top:hover {
  background-color: var(--primary-hover);
  transform: translateY(-3px);
  box-shadow: 0 6px 20px rgba(0, 74, 139, 0.3);
}
.btn-top svg {
  width: 24px;
  height: 24px;
}
.btn-whatsapp {
  background-color: #25d366;
  border: none;
  animation: whatsapp-pulse 2s infinite;
}
.btn-whatsapp:hover {
  background-color: #20ba5a;
  transform: scale(1.1);
  box-shadow: 0 6px 20px rgba(37, 211, 102, 0.3);
}
.btn-whatsapp svg {
  width: 28px;
  height: 28px;
}
@keyframes whatsapp-pulse {
  0% {
    box-shadow: 0 0 0 0 rgba(37, 211, 102, 0.5);
  }
  70% {
    box-shadow: 0 0 0 15px rgba(37, 211, 102, 0);
  }
  100% {
    box-shadow: 0 0 0 0 rgba(37, 211, 102, 0);
  }
}