/* ==========================================================================
   AXELL PPF - Core Design System & Base Styles
   Premium Automotive Paint Protection Films
   ========================================================================== */

@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700&family=Outfit:wght@400;500;600;700;800;900&display=swap');

:root {
  /* Color Palette - Premium Automotive Light Theme */
  --bg-main: #f8fafc;
  --bg-secondary: #f1f5f9;
  --bg-card: #ffffff;
  --bg-card-hover: #ffffff;
  --bg-glass: rgba(255, 255, 255, 0.85);
  
  --primary-red: #ff1e27;
  --primary-red-hover: #e00f18;
  --primary-red-glow: 0 0 25px rgba(255, 30, 39, 0.25);
  
  --whatsapp-green: #25d366;
  --whatsapp-green-hover: #20bd5a;
  --whatsapp-glow: 0 0 25px rgba(37, 211, 102, 0.3);
  
  --text-main: #0f172a;
  --text-secondary: #475569;
  --text-muted: #94a3b8;
  
  --border-light: #e2e8f0;
  --border-hover: rgba(255, 30, 39, 0.35);
  --border-active: rgba(255, 30, 39, 0.7);
  
  /* Typography */
  --font-heading: 'Outfit', -apple-system, BlinkMacSystemFont, sans-serif;
  --font-body: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
  
  /* Radii & Shadows */
  --radius-sm: 6px;
  --radius-md: 12px;
  --radius-lg: 20px;
  --radius-pill: 9999px;
  
  --shadow-subtle: 0 4px 20px rgba(0, 0, 0, 0.05);
  --shadow-strong: 0 12px 35px rgba(0, 0, 0, 0.08);
  --shadow-glow: 0 0 30px rgba(255, 30, 39, 0.15);
  
  /* Transitions */
  --transition-fast: 0.2s ease;
  --transition-normal: 0.3s ease;
  --transition-slow: 0.5s cubic-bezier(0.16, 1, 0.3, 1);
}

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

html {
  scroll-behavior: smooth;
  font-size: 16px;
  background-color: var(--bg-main);
  color: var(--text-main);
  -webkit-font-smoothing: antialiased;
}

body {
  font-family: var(--font-body);
  background-color: var(--bg-main);
  color: var(--text-main);
  line-height: 1.6;
  overflow-x: hidden;
  position: relative;
}

/* Background Ambient Glow */
body::before {
  content: '';
  position: fixed;
  top: -150px;
  left: 50%;
  transform: translateX(-50%);
  width: 800px;
  height: 450px;
  background: radial-gradient(circle, rgba(255, 30, 39, 0.04) 0%, rgba(248, 250, 252, 0) 70%);
  pointer-events: none;
  z-index: 0;
}

/* Typography Helpers */
h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-heading);
  font-weight: 700;
  line-height: 1.2;
  letter-spacing: -0.02em;
  color: var(--text-main);
}

h1 { font-size: clamp(2.2rem, 5vw, 3.8rem); font-weight: 800; }
h2 { font-size: clamp(1.8rem, 4vw, 2.8rem); font-weight: 800; }
h3 { font-size: clamp(1.4rem, 3vw, 2rem); font-weight: 700; }
h4 { font-size: clamp(1.15rem, 2.5vw, 1.4rem); font-weight: 600; }
h5 { font-size: 1.1rem; font-weight: 600; }
h6 { font-size: 0.95rem; font-weight: 600; }

p {
  color: var(--text-secondary);
  font-size: 1rem;
  margin-bottom: 1rem;
}

p:last-child {
  margin-bottom: 0;
}

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

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

ul, ol {
  list-style: none;
}

/* Container */
.container {
  width: 100%;
  max-width: 1240px;
  margin: 0 auto;
  padding: 0 1.5rem;
}

.container-narrow {
  max-width: 900px;
}

/* Section Spacing */
.section {
  padding: 5rem 0;
  position: relative;
  z-index: 1;
}

.section-lg {
  padding: 7rem 0;
}

.section-header {
  text-align: center;
  max-width: 760px;
  margin: 0 auto 3.5rem;
}

.section-tag {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-family: var(--font-heading);
  font-size: 0.85rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.15em;
  color: var(--primary-red);
  background: rgba(255, 30, 39, 0.1);
  border: 1px solid rgba(255, 30, 39, 0.25);
  padding: 0.35rem 1rem;
  border-radius: var(--radius-pill);
  margin-bottom: 1rem;
}

.section-title {
  margin-bottom: 1rem;
}

.section-desc {
  font-size: 1.1rem;
  color: var(--text-secondary);
  line-height: 1.6;
}

/* Red Gradient Text */
.text-gradient {
  background: linear-gradient(135deg, #0f172a 20%, #ff1e27 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.hero-slide .text-gradient,
.page-hero .text-gradient {
  background: linear-gradient(135deg, #ffffff 30%, #ff1e27 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

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

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.6rem;
  font-family: var(--font-heading);
  font-weight: 700;
  font-size: 0.95rem;
  padding: 0.85rem 1.6rem;
  border-radius: var(--radius-sm);
  border: 1px solid transparent;
  cursor: pointer;
  transition: all var(--transition-normal);
  text-transform: uppercase;
  letter-spacing: 0.04em;
  position: relative;
  overflow: hidden;
}

.btn-primary {
  background: linear-gradient(135deg, #ff1e27 0%, #d60b13 100%);
  color: #ffffff;
  box-shadow: 0 4px 20px rgba(255, 30, 39, 0.35);
}

.btn-primary:hover {
  background: linear-gradient(135deg, #ff333b 0%, #ff1e27 100%);
  box-shadow: 0 6px 28px rgba(255, 30, 39, 0.55);
  transform: translateY(-2px);
}

.btn-whatsapp {
  background: #25d366;
  color: #ffffff;
  box-shadow: 0 4px 18px rgba(37, 211, 102, 0.35);
}

.btn-whatsapp:hover {
  background: #20bd5a;
  box-shadow: 0 6px 25px rgba(37, 211, 102, 0.5);
  transform: translateY(-2px);
  color: #ffffff;
}

.btn-outline {
  background: transparent;
  border-color: #cbd5e1;
  color: var(--text-main);
}

.btn-outline:hover {
  background: #ff1e27;
  border-color: #ff1e27;
  color: #ffffff;
  transform: translateY(-2px);
}

.hero-slide .btn-outline,
.page-hero .btn-outline {
  background: rgba(255, 255, 255, 0.06);
  border-color: rgba(255, 255, 255, 0.3);
  color: #ffffff;
}

.hero-slide .btn-outline:hover,
.page-hero .btn-outline:hover {
  background: rgba(255, 255, 255, 0.15);
  border-color: #ffffff;
  color: #ffffff;
}

.btn-lg {
  padding: 1.1rem 2.2rem;
  font-size: 1.05rem;
  border-radius: var(--radius-md);
}

.btn-sm {
  padding: 0.5rem 1.1rem;
  font-size: 0.85rem;
}

.btn svg {
  flex-shrink: 0;
}

/* Badges */
.badge {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  font-size: 0.75rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  padding: 0.3rem 0.75rem;
  border-radius: var(--radius-sm);
}

.badge-red {
  background: rgba(255, 30, 39, 0.1);
  color: #ff1e27;
  border: 1px solid rgba(255, 30, 39, 0.25);
}

.badge-green {
  background: rgba(37, 211, 102, 0.12);
  color: #15803d;
  border: 1px solid rgba(37, 211, 102, 0.3);
}

.badge-dark {
  background: #f1f5f9;
  color: #334155;
  border: 1px solid #cbd5e1;
}

.badge-usa {
  background: #eff6ff;
  color: #1e40af;
  border: 1px solid #bfdbfe;
}

/* Card Base */
.card {
  background: var(--bg-card);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-md);
  padding: 2rem;
  transition: all var(--transition-normal);
  position: relative;
  overflow: hidden;
}

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

/* Grid Utilities */
.grid-2 {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 2rem;
}

.grid-3 {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 2rem;
}

.grid-4 {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1.5rem;
}

@media (max-width: 992px) {
  .grid-4 { grid-template-columns: repeat(2, 1fr); }
  .grid-3 { grid-template-columns: repeat(2, 1fr); }
  .grid-2 { grid-template-columns: 1fr; }
}

@media (max-width: 640px) {
  .grid-4, .grid-3 { grid-template-columns: 1fr; }
}