html {
  scroll-behavior: smooth;
}

:root {
  --primary: #111111;
  --secondary: #6E6E73;
  --bg-color: #F5F5F7;
  --accent: #0071E3;
  --light: #FFFFFF;
  --border: #E5E5E7;

  /* Typography */
  --font-primary: 'Inter', system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  --h1-size: clamp(36px, 5vw, 48px);
  --h2-size: clamp(28px, 4vw, 36px);
  --h3-size: clamp(22px, 3vw, 28px);
  --body-size: 18px;
  --small-size: 14px;
  
  --container-width: 1200px;
}

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

body {
  font-family: var(--font-primary);
  background-color: var(--bg-color);
  color: var(--primary);
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

a {
  text-decoration: none;
  color: inherit;
  transition: color 0.2s ease;
}

button {
  font-family: inherit;
  cursor: pointer;
  border: none;
  background: none;
}

/* Utilities */
.container {
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 0 24px;
}

.text-center { text-align: center; }
.mt-4 { margin-top: 1rem; }
.mb-4 { margin-bottom: 1rem; }
.mb-8 { margin-bottom: 2rem; }
.text-secondary { color: var(--secondary); font-size: var(--body-size); }

/* Typography Tags */
h1 { font-size: var(--h1-size); font-weight: 700; letter-spacing: -0.02em; line-height: 1.1; margin-bottom: 0.5rem; }
h2 { font-size: var(--h2-size); font-weight: 600; letter-spacing: -0.01em; margin-bottom: 1rem; }
h3 { font-size: var(--h3-size); font-weight: 600; }
p { font-size: var(--body-size); color: var(--secondary); }
.small { font-size: var(--small-size); }

/* Animations */
.fade-in-section {
  opacity: 0;
  transform: translateY(20px);
  visibility: hidden;
  transition: opacity 0.6s ease-out, transform 0.6s ease-out;
  will-change: opacity, visibility;
}
.fade-in-section.is-visible {
  opacity: 1;
  transform: none;
  visibility: visible;
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: 999px;
  font-size: 16px;
  font-weight: 500;
  padding: 14px 28px;
  transition: all 0.2s ease;
}
.btn-primary {
  background-color: var(--accent);
  color: var(--light);
}
.btn-primary:hover {
  background-color: #005BB5;
  transform: scale(1.02);
}
.btn-secondary {
  background-color: rgba(0, 113, 227, 0.08); /* slightly transparent blue */
  color: var(--accent);
}
.btn-secondary:hover {
  background-color: rgba(0, 113, 227, 0.15);
}
.btn-whatsapp {
  background-color: #25D366;
  color: #FFFFFF;
  gap: 8px;
}
.btn-whatsapp:hover {
  background-color: #128C7E;
  transform: scale(1.02);
}
.btn-ghost {
  background-color: transparent;
  color: var(--primary);
}
.btn-ghost:hover {
  background-color: rgba(0, 0, 0, 0.05);
}

/* Navbar */
.navbar {
  position: sticky;
  top: 0;
  z-index: 1000;
  background: rgba(255, 255, 255, 0.8);
  backdrop-filter: saturate(180%) blur(20px);
  -webkit-backdrop-filter: saturate(180%) blur(20px);
  border-bottom: 1px solid var(--border);
  padding: 16px 0;
}

.navbar .container {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.navbar-brand {
  font-weight: 700;
  font-size: 20px;
  letter-spacing: -0.5px;
  color: var(--primary);
}

.navbar-links {
  display: flex;
  gap: 32px;
}

.navbar-links a {
  font-size: 14px;
  font-weight: 400;
  color: var(--primary);
  opacity: 0.8;
}

.navbar-links a:hover {
  opacity: 1;
}

.navbar-cta .btn {
  padding: 8px 20px;
  font-size: 14px;
}
.navbar-cta {
  display: flex;
  align-items: center;
  gap: 12px;
}

/* Hero Section */
.hero {
  padding: 100px 0 80px;
  text-align: center;
  background: var(--bg-color);
  overflow: hidden;
}

.hero p.subtitle {
  max-width: 600px;
  margin: 0 auto 32px;
}

.hero-cta {
  display: flex;
  justify-content: center;
  gap: 16px;
  margin-bottom: 64px;
}

.hero-visual {
  max-width: 1000px;
  margin: 0 auto;
}
.hero-visual img {
  width: 100%;
  height: auto;
  border-radius: 24px;
  box-shadow: 0 20px 40px rgba(0,0,0,0.1);
}

/* Card Grid Styles */
.section {
  padding: 100px 0;
}
.section-light {
  background-color: var(--light);
}

.grid {
  display: grid;
  gap: 32px;
}

.grid-2 { grid-template-columns: repeat(2, 1fr); }
.grid-3 { grid-template-columns: repeat(3, 1fr); }
.grid-5 { grid-template-columns: repeat(5, 1fr); }
.grid-4 { grid-template-columns: repeat(4, 1fr); }

/* Common Card style matched to Apple Cards UI */
.apple-card {
  background: var(--light);
  border-radius: 18px;
  padding: 32px 24px;
  text-align: center;
  box-shadow: 0 4px 15px rgba(0,0,0,0.03);
  transition: transform 0.3s cubic-bezier(0.175, 0.885, 0.32, 1.275), box-shadow 0.3s ease;
  border: 1px solid rgba(0,0,0,0.02);
  display: flex;
  flex-direction: column;
  align-items: center;
  text-decoration: none;
  cursor: pointer;
}

.section-light .apple-card {
  background: var(--bg-color);
}

.apple-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 10px 30px rgba(0,0,0,0.08);
}

.apple-card .icon {
  margin-bottom: 24px;
  color: var(--primary);
}

.apple-card h3 {
  font-size: 20px;
  margin-bottom: 8px;
  color: var(--primary);
}

/* Devices Select Grid */
.device-select-grid .apple-card {
  padding: 40px 24px;
}

.device-select-grid .icon svg {
  width: 64px;
  height: 64px;
  fill: currentColor;
}

/* Common Problems */
.problems-grid .apple-card {
  text-align: left;
  align-items: flex-start;
  padding: 32px;
}
.problems-grid .icon svg {
  width: 32px;
  height: 32px;
  color: var(--accent);
}

/* Authority Section */
.authority-layout {
  display: flex;
  align-items: center;
  gap: 64px;
}
.authority-text {
  flex: 1;
}
.authority-visual {
  flex: 1;
  position: relative;
}
.authority-visual img {
  width: 100%;
  border-radius: 20px;
  display: block;
}
.stats-badge {
  position: absolute;
  bottom: -20px;
  left: -20px;
  background: var(--light);
  padding: 24px 32px;
  border-radius: 18px;
  box-shadow: 0 10px 30px rgba(0,0,0,0.1);
  text-align: center;
}
.stats-badge .number {
  font-size: 48px;
  font-weight: 700;
  color: var(--accent);
  line-height: 1;
  display: block;
}
.stats-badge .label {
  font-size: 14px;
  color: var(--secondary);
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 1px;
}

/* Brands */
.brands-grid {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 64px 80px;
  align-items: center;
  max-width: 1100px;
  margin: 48px auto 0;
}
.brand-item {
  flex: 0 0 auto;
  display: flex;
  justify-content: center;
  align-items: center;
  transition: all 0.3s ease;
}
.brand-item img {
  max-width: 220px;
  max-height: 90px;
  width: auto;
  height: auto;
  filter: grayscale(100%);
  opacity: 0.5;
  transition: all 0.3s ease;
}
.brand-item img:hover {
  filter: grayscale(0%);
  opacity: 1;
  transform: scale(1.05);
}

/* Process */
.process-grid .apple-card {
  position: relative;
  overflow: hidden;
}
.process-step-number {
  position: absolute;
  top: -20px;
  right: -20px;
  font-size: 120px;
  font-weight: 800;
  color: rgba(0, 113, 227, 0.05); /* very faint accent */
  line-height: 1;
}

/* Testimonials */
.testimonials-grid .apple-card {
  text-align: left;
  align-items: flex-start;
}
.testimonial-stars {
  color: #F5A623;
  margin-bottom: 16px;
}

/* Contact */
.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 64px;
}
.contact-info-column {
  display: flex;
  flex-direction: column;
  justify-content: center;
}

.contact-details {
  margin-top: 32px;
}

.form-card {
  padding: 40px;
  max-width: 800px;
  margin: 0 auto;
  text-align: left;
  align-items: stretch;
  background: var(--light);
}

.map-column {
  width: 100%;
  height: 100%;
  min-height: 400px;
}

.map-placeholder {
  width: 100%;
  height: 100%;
  border-radius: 18px;
  overflow: hidden;
  box-shadow: 0 4px 15px rgba(0,0,0,0.05);
  border: 1px solid var(--border);
}

.map-placeholder iframe {
  width: 100%;
  height: 100%;
  min-height: 400px;
  border: none;
}

.form-group {
  margin-bottom: 20px;
}

.form-group label {
  display: block;
  font-size: 14px;
  font-weight: 500;
  margin-bottom: 8px;
  color: var(--primary);
}

.form-group input,
.form-group select,
.form-group textarea {
  width: 100%;
  padding: 14px 16px;
  border-radius: 12px;
  border: 1px solid var(--border);
  background-color: var(--bg-color);
  font-family: inherit;
  font-size: 16px;
  transition: all 0.2s ease;
  color: var(--primary);
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
  outline: none;
  border-color: var(--accent);
  background-color: var(--light);
  box-shadow: 0 0 0 4px rgba(0, 113, 227, 0.1);
}

.form-group select {
  appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='24' height='24' viewBox='0 0 24 24' fill='none' stroke='%236E6E73' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpolyline points='6 9 12 15 18 9'%3E%3C/polyline%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 12px center;
  background-size: 18px;
  padding-right: 40px;
}

.form-note {
  font-size: 13px;
  color: var(--secondary);
}

.form-message {
  margin-top: 24px;
  padding: 20px;
  border-radius: 12px;
  font-size: 16px;
  text-align: center;
  display: none;
}

.form-message.success {
  background-color: #E8F5E9;
  color: #2E7D32;
  border: 1px solid #C8E6C9;
}

.form-message.error {
  background-color: #FFEBEE;
  color: #C62828;
  border: 1px solid #FFCDD2;
}

/* Button Loading State */
.btn-primary.loading {
  opacity: 0.7;
  cursor: not-allowed;
}

.contact-item {
  display: flex;
  align-items: flex-start;
  gap: 16px;
  margin-bottom: 32px;
}
.contact-item:last-child {
  margin-bottom: 0;
}
.contact-item .icon {
  background: var(--bg-color);
  width: 48px;
  height: 48px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--accent);
}

/* Floating WhatsApp */
.whatsapp-float {
  position: fixed;
  bottom: 24px;
  right: 24px;
  width: 60px;
  height: 60px;
  background-color: #25D366;
  color: #FFF;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 4px 12px rgba(0,0,0,0.15);
  z-index: 2000;
  transition: all 0.3s cubic-bezier(0.175, 0.885, 0.32, 1.275);
}
.whatsapp-float:hover {
  transform: scale(1.1) translateY(-5px);
  box-shadow: 0 8px 20px rgba(0,0,0,0.25);
}
.whatsapp-float svg {
  width: 32px;
  height: 32px;
}

.hide-mobile { display: block; }

@media (max-width: 767px) {
  .hide-mobile { display: none !important; }
  .whatsapp-float {
    bottom: 20px;
    right: 20px;
    width: 54px;
    height: 54px;
  }
}

/* Footer */
footer {
  background: #1d1d1f;
  color: #f5f5f7;
  padding: 64px 0 32px;
  font-size: 12px;
}
footer a {
  color: #f5f5f7;
}
footer a:hover {
  text-decoration: underline;
}
.footer-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 32px;
  margin-bottom: 48px;
}
.footer-col h4 {
  color: var(--light);
  font-weight: 600;
  margin-bottom: 16px;
  font-size: 14px;
}
.footer-col ul {
  list-style: none;
}
.footer-col ul li {
  margin-bottom: 8px;
}
.footer-col ul li a {
  opacity: 0.8;
}
.footer-bottom {
  border-top: 1px solid rgba(255,255,255,0.1);
  padding-top: 24px;
  display: flex;
  justify-content: space-between;
  opacity: 0.8;
}

/* Responsive Breakpoints */
@media (max-width: 991px) {
  .grid-5, .grid-4 { grid-template-columns: repeat(2, 1fr); }
  .grid-3 { grid-template-columns: wrap; }
  .authority-layout, .contact-grid { 
    display: flex;
    flex-direction: column; 
    gap: 32px;
  }
  .navbar-links { display: none; }
}
@media (max-width: 767px) {
  .grid-2 { grid-template-columns: 1fr; }
  .grid-5, .grid-4, .grid-3 { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr; }
  .hero { padding: 80px 0 40px; }
  h1 { font-size: 32px; }
  .hero-cta { flex-direction: column; }
}