/* 
  PRIMESHINE AUTO LTD - Main Stylesheet
  Architecture: Reset, Variables, Base, Typography, Utilities, Components, Layout, Pages, Animations, Media Queries 
*/

/* 1. CSS Reset / Normalize */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}
html {
  font-size: 100%;
  scroll-behavior: smooth;
}
body {
  min-height: 100vh;
  text-rendering: optimizeSpeed;
  line-height: 1.5;
  overflow-x: hidden;
}
img, picture, video, canvas, svg {
  display: block;
  max-width: 100%;
}
input, button, textarea, select {
  font: inherit;
}
p, h1, h2, h3, h4, h5, h6 {
  overflow-wrap: break-word;
}
ul, ol {
  list-style: none;
}
a {
  text-decoration: none;
  color: inherit;
}

/* 2. CSS Custom Properties */
:root {
  /* Colors - Modern Auto Theme */
  --color-primary: #0EA5E9; /* Bright Blue / Water Shine */
  --color-primary-dark: #0284C7;
  --color-secondary: #0F172A; /* Slate Navy */
  --color-accent: #38BDF8; /* Light Sky Blue */
  
  --color-bg: #F8FAFC; /* Light Mode Background */
  --color-surface: #FFFFFF; /* Card Background */
  --color-text: #334155; /* Body Text */
  --color-text-dark: #0F172A; /* Heading Text */
  --color-muted: #64748B;
  
  --color-border: #E2E8F0;
  --color-success: #10B981;
  --color-error: #EF4444;

  /* Typography */
  --font-heading: 'Inter', sans-serif;
  --font-body: 'Plus Jakarta Sans', sans-serif;

  /* Spacing */
  --spacing-xs: 0.5rem;
  --spacing-sm: 1rem;
  --spacing-md: 2rem;
  --spacing-lg: 4rem;
  --spacing-xl: 6rem;
  --spacing-xxl: 8rem;

  /* Borders & Shadows */
  --border-radius-sm: 4px;
  --border-radius: 8px;
  --border-radius-lg: 16px;
  --border-radius-full: 9999px;
  
  --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
  --shadow-float: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
  
  --transition-speed: 0.3s;
}

/* 3. Global / Base styles */
body {
  font-family: var(--font-body);
  background-color: var(--color-bg);
  color: var(--color-text);
}
.container {
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 var(--spacing-sm);
}
section {
  padding: var(--spacing-xl) 0;
}

/* 4. Typography scale */
h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-heading);
  color: var(--color-text-dark);
  font-weight: 700;
  line-height: 1.2;
}
h1 { font-size: clamp(2.5rem, 5vw, 4rem); letter-spacing: -0.02em; }
h2 { font-size: clamp(2rem, 4vw, 3rem); margin-bottom: var(--spacing-md); }
h3 { font-size: 1.75rem; margin-bottom: var(--spacing-sm); }
h4 { font-size: 1.25rem; }
p { margin-bottom: var(--spacing-sm); }
.text-center { text-align: center; }
.text-muted { color: var(--color-muted); }

/* 5. Utility classes */
.d-flex { display: flex; }
.flex-column { flex-direction: column; }
.align-center { align-items: center; }
.justify-center { justify-content: center; }
.justify-between { justify-content: space-between; }
.gap-sm { gap: var(--spacing-sm); }
.gap-md { gap: var(--spacing-md); }
.gap-lg { gap: var(--spacing-lg); }
.mt-sm { margin-top: var(--spacing-sm); }
.mt-md { margin-top: var(--spacing-md); }
.mb-md { margin-bottom: var(--spacing-md); }
.w-100 { width: 100%; }
.bg-secondary { background-color: var(--color-secondary); color: white; }
.bg-secondary h2 { color: white; }
.bg-surface { background-color: var(--color-surface); }

/* 6. Component styles */
/* Buttons */
.btn {
  display: inline-block;
  padding: 0.75rem 1.5rem;
  font-family: var(--font-heading);
  font-weight: 600;
  border-radius: var(--border-radius);
  border: none;
  cursor: pointer;
  transition: all var(--transition-speed) ease;
  text-align: center;
}
.btn-primary {
  background-color: var(--color-primary);
  color: white;
}
.btn-primary:hover {
  background-color: var(--color-primary-dark);
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}
.btn-secondary {
  background-color: transparent;
  color: var(--color-text-dark);
  border: 2px solid var(--color-text-dark);
}
.btn-secondary:hover {
  background-color: var(--color-text-dark);
  color: white;
}
.btn-outline-light {
  background-color: transparent;
  color: white;
  border: 2px solid white;
}
.btn-outline-light:hover {
  background-color: white;
  color: var(--color-secondary);
}

/* Cards */
.card {
  background: var(--color-surface);
  border-radius: var(--border-radius-lg);
  padding: var(--spacing-md);
  box-shadow: var(--shadow-md);
  transition: transform var(--transition-speed), box-shadow var(--transition-speed);
}
.card:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow-float);
}

/* Badges */
.badge {
  display: inline-block;
  padding: 0.25rem 0.75rem;
  border-radius: var(--border-radius-full);
  font-size: 0.875rem;
  font-weight: 600;
  background-color: var(--color-primary);
  color: white;
  margin-bottom: var(--spacing-xs);
}

/* Forms */
.form-group { margin-bottom: var(--spacing-sm); }
.form-group label {
  display: block;
  font-weight: 600;
  margin-bottom: 0.5rem;
  color: var(--color-text-dark);
}
.form-control {
  width: 100%;
  padding: 0.75rem;
  border: 1px solid var(--color-border);
  border-radius: var(--border-radius);
  background: var(--color-bg);
  transition: border-color var(--transition-speed);
}
.form-control:focus {
  outline: none;
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px rgba(14, 165, 233, 0.2);
}
.error-message {
  color: var(--color-error);
  font-size: 0.875rem;
  margin-top: 0.25rem;
  display: none;
}

/* 7. Layout components */
/* Navbar */
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  background: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(10px);
  z-index: 1000;
  transition: box-shadow var(--transition-speed);
  padding: var(--spacing-sm) 0;
}
.navbar.scrolled { box-shadow: var(--shadow-md); }
.nav-container {
  display: flex;
  justify-content: space-between;
  align-items: center;
}
.brand {
  font-family: var(--font-heading);
  font-weight: 800;
  font-size: 1.5rem;
  color: var(--color-secondary);
  display: flex;
  align-items: center;
  gap: 0.5rem;
}
.brand i { color: var(--color-primary); }
.nav-links { display: flex; gap: var(--spacing-md); align-items: center; }
.nav-link { font-weight: 600; transition: color var(--transition-speed); }
.nav-link:hover, .nav-link.active { color: var(--color-primary); }
.hamburger { display: none; cursor: pointer; font-size: 1.5rem; }

@media (min-width: 769px) {
  .nav-container { position: relative; }
  .nav-links {
    position: absolute;
    left: 50%;
    transform: translateX(-50%);
  }
}

/* Preloader */
#preloader {
  position: fixed;
  inset: 0;
  background: var(--color-surface);
  z-index: 9999;
  display: flex;
  justify-content: center;
  align-items: center;
  transition: opacity 0.5s ease;
}
.loader {
  width: 50px;
  height: 50px;
  border: 5px solid var(--color-border);
  border-top-color: var(--color-primary);
  border-radius: 50%;
  animation: spin 1s linear infinite;
}

/* Footer */
.footer {
  background: var(--color-secondary);
  color: white;
  padding: var(--spacing-xl) 0 var(--spacing-sm);
}
.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: var(--spacing-lg);
  margin-bottom: var(--spacing-lg);
}
.footer h4 { color: white; margin-bottom: var(--spacing-sm); }
.footer p { color: #CBD5E1; }
.footer ul li { margin-bottom: 0.75rem; display: flex; align-items: flex-start; gap: 0.5rem; line-height: 1.5; }
.footer ul li > a { display: inline-flex; align-items: flex-start; gap: 0.6rem; color: #CBD5E1; transition: color var(--transition-speed); }
.footer ul li > a:hover { color: var(--color-primary); }
.footer ul li i { color: var(--color-primary); margin-top: 0.25rem; font-size: 1.1rem; }
.footer-bottom {
  text-align: center;
  padding-top: var(--spacing-sm);
  border-top: 1px solid rgba(255,255,255,0.1);
  color: #94A3B8;
  font-size: 0.875rem;
}
.social-icons { display: flex; gap: 1rem; margin-top: 1rem; }
.social-icons a {
  display: flex;
  justify-content: center;
  align-items: center;
  width: 40px;
  height: 40px;
  background: rgba(255,255,255,0.1);
  border-radius: 50%;
  transition: background var(--transition-speed);
}
.social-icons a:hover { background: var(--color-primary); }

/* Floating WhatsApp & Back to Top */
.floating-btn {
  position: fixed;
  bottom: 20px;
  width: 50px;
  height: 50px;
  border-radius: 50%;
  display: flex;
  justify-content: center;
  align-items: center;
  color: white;
  box-shadow: var(--shadow-lg);
  z-index: 900;
  transition: transform var(--transition-speed), opacity var(--transition-speed);
}
.floating-btn:hover { transform: scale(1.1); }
.whatsapp-float {
  right: 20px;
  background-color: #25D366;
  font-size: 24px;
}
.back-to-top {
  right: 80px;
  background-color: var(--color-secondary);
  opacity: 0;
  pointer-events: none;
}
.back-to-top.visible { opacity: 1; pointer-events: auto; }

/* 8. Page-specific styles */

/* Home Hero */
.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  padding-top: 80px;
  background: linear-gradient(135deg, rgba(15,23,42,0.95), rgba(15,23,42,0.85)), url('https://images.unsplash.com/photo-1601362840469-51e4d8d58785?auto=format&fit=crop&q=80') center/cover no-repeat;
  color: white;
  position: relative;
}
.hero h1 { color: white; margin-bottom: 1rem; }
.hero p { font-size: 1.25rem; color: #E2E8F0; max-width: 600px; margin-bottom: 2rem; }
.scroll-indicator {
  position: absolute;
  bottom: 30px;
  left: 50%;
  transform: translateX(-50%);
  animation: bounce 2s infinite;
  color: white;
  font-size: 1.5rem;
}

/* Page Headers (About, Services, etc) */
.page-header {
  padding: 150px 0 80px;
  background: var(--color-secondary);
  color: white;
  text-align: center;
}
.page-header h1 { color: white; }

/* Trust Bar */
.trust-bar {
  background: white;
  padding: var(--spacing-md) 0;
  margin-top: -50px;
  border-radius: var(--border-radius-lg);
  box-shadow: var(--shadow-lg);
  position: relative;
  z-index: 10;
}
.counter-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--spacing-sm);
  text-align: center;
}
.counter-item h3 { font-size: 2.5rem; color: var(--color-primary); margin-bottom: 0.25rem; }
.counter-item p { font-weight: 600; color: var(--color-text-dark); margin: 0; }

/* Services */
.services-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: var(--spacing-md);
}
.service-icon {
  width: 60px;
  height: 60px;
  background: rgba(14, 165, 233, 0.1);
  color: var(--color-primary);
  border-radius: var(--border-radius);
  display: flex;
  justify-content: center;
  align-items: center;
  font-size: 1.75rem;
  margin-bottom: var(--spacing-sm);
  transition: all var(--transition-speed);
}
.card:hover .service-icon {
  background: var(--color-primary);
  color: white;
}

/* Pricing Section */
.pricing-toggle {
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 1rem;
  margin-bottom: var(--spacing-lg);
}
.switch { position: relative; display: inline-block; width: 60px; height: 34px; }
.switch input { opacity: 0; width: 0; height: 0; }
.slider { position: absolute; cursor: pointer; inset: 0; background-color: #cbd5e1; transition: .4s; border-radius: 34px; }
.slider:before { position: absolute; content: ""; height: 26px; width: 26px; left: 4px; bottom: 4px; background-color: white; transition: .4s; border-radius: 50%; }
input:checked + .slider { background-color: var(--color-primary); }
input:checked + .slider:before { transform: translateX(26px); }
.save-badge { background: #E0E7FF; color: #4338CA; padding: 0.25rem 0.5rem; border-radius: 4px; font-weight: bold; font-size: 0.75rem; }

.pricing-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--spacing-md);
  align-items: center;
}
.pricing-card { text-align: center; border: 1px solid var(--color-border); }
.pricing-card.popular {
  border: 2px solid var(--color-primary);
  transform: scale(1.05);
  position: relative;
}
.pricing-card.popular:hover { transform: scale(1.05) translateY(-5px); }
.price-display { font-size: 3rem; font-weight: 800; color: var(--color-text-dark); margin: 1rem 0; font-family: var(--font-heading); }
.price-display span { font-size: 1rem; font-weight: 400; color: var(--color-muted); }
.feature-list { text-align: left; margin: 1.5rem 0; }
.feature-list li { margin-bottom: 0.75rem; display: flex; align-items: center; gap: 0.5rem; }
.feature-list i.fa-check { color: var(--color-success); }
.feature-list i.fa-xmark { color: var(--color-muted); opacity: 0.5; }

/* Testimonials */
.testimonial-slide {
  padding: var(--spacing-md);
  background: white;
  border-radius: var(--border-radius-lg);
  box-shadow: var(--shadow-sm);
  margin: var(--spacing-sm);
}
.stars { color: #F59E0B; margin-bottom: 1rem; }
.client-info { display: flex; align-items: center; gap: 1rem; margin-top: 1rem; }
.client-info img { width: 50px; height: 50px; border-radius: 50%; object-fit: cover; }

/* FAQ Accordion */
.accordion-item { border-bottom: 1px solid var(--color-border); }
.accordion-header {
  width: 100%;
  padding: 1.5rem 0;
  background: none;
  border: none;
  text-align: left;
  font-size: 1.125rem;
  font-weight: 600;
  display: flex;
  justify-content: space-between;
  align-items: center;
  cursor: pointer;
  color: var(--color-text-dark);
}
.accordion-content {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.3s ease;
}
.accordion-content p { padding-bottom: 1.5rem; }
.accordion-item.active .accordion-content { max-height: 200px; }
.accordion-item.active .fa-chevron-down { transform: rotate(180deg); }

/* Checkout Grid */
.checkout-grid {
  display: grid;
  grid-template-columns: 2fr 1fr;
  gap: var(--spacing-lg);
}
.order-summary {
  background: var(--color-primary);
  color: white;
  padding: var(--spacing-md);
  border-radius: var(--border-radius-lg);
}
.order-summary h3 { color: white; }
.order-summary .price-row { display: flex; justify-content: space-between; border-top: 1px solid rgba(255,255,255,0.2); margin-top: 1rem; padding-top: 1rem; font-weight: bold; font-size: 1.25rem; }

/* 9. Animations & keyframes */
@keyframes spin { 100% { transform: rotate(360deg); } }
@keyframes bounce { 0%, 20%, 50%, 80%, 100% { transform: translateY(0) translateX(-50%); } 40% { transform: translateY(-30px) translateX(-50%); } 60% { transform: translateY(-15px) translateX(-50%); } }

/* 10. Media queries */
@media (max-width: 1200px) {
  .footer-grid { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 992px) {
  .counter-grid { grid-template-columns: 1fr 1fr; }
  .pricing-grid { grid-template-columns: 1fr; gap: var(--spacing-lg); max-width: 500px; margin: 0 auto; }
  .pricing-card.popular { transform: none; }
  .pricing-card.popular:hover { transform: translateY(-5px); }
  .checkout-grid { grid-template-columns: 1fr; }
}
@media (max-width: 768px) {
  .nav-links {
    position: fixed;
    top: 70px;
    right: -100%;
    width: 250px;
    height: 100vh;
    background: white;
    flex-direction: column;
    padding: var(--spacing-md);
    box-shadow: -5px 0 15px rgba(0,0,0,0.1);
    transition: right 0.3s ease;
  }
  .nav-links.active { right: 0; }
  .hamburger { display: block; }
  .trust-bar { display: none; /* Hide on mobile to simplify hero */ }
  .footer-grid { grid-template-columns: 1fr; text-align: center; }
  .social-icons { justify-content: center; }
}
@media (max-width: 576px) {
  .counter-grid { grid-template-columns: 1fr; }
  h1 { font-size: 2rem; }
  h2 { font-size: 1.75rem; }
}