/* ============================================
   Shopleton — CSS Variables & Global Styles
   ============================================ */

:root {
  /* Brand Colors */
  --color-primary: #10B981;
  --color-primary-hover: #059669;
  --color-primary-light: #ECFDF5;
  --color-accent: #8B5CF6;
  --color-whatsapp: #25D366;

  /* Neutrals */
  --color-bg: #F9FAFB;
  --color-surface: #FFFFFF;
  --color-text: #111827;
  --color-text-muted: #6B7280;
  --color-text-light: #9CA3AF;
  --color-border: #E5E7EB;

  /* Shadows */
  --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.05);
  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.07), 0 2px 4px -2px rgba(0, 0, 0, 0.05);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.08), 0 4px 6px -4px rgba(0, 0, 0, 0.05);
  --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.08), 0 8px 10px -6px rgba(0, 0, 0, 0.04);

  /* Radius */
  --radius-sm: 8px;
  --radius-md: 12px;
  --radius-lg: 16px;
  --radius-xl: 24px;
  --radius-full: 9999px;

  /* Typography */
  --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;

  /* Layout */
  --max-width: 1100px;
  --section-padding: 100px 24px;
}

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

html {
  scroll-behavior: smooth;
  -webkit-font-smoothing: antialiased;
}

body {
  font-family: var(--font-sans);
  background: var(--color-bg);
  color: var(--color-text);
  line-height: 1.6;
}

a {
  color: inherit;
  text-decoration: none;
}

img {
  max-width: 100%;
}

/* ============================================
   Header
   ============================================ */
.header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  background: rgba(249, 250, 251, 0.85);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--color-border);
  transition: box-shadow 0.3s ease;
}

.header.scrolled {
  box-shadow: var(--shadow-sm);
}

.header-inner {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 24px;
  height: 64px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.logo {
  font-size: 1.35rem;
  font-weight: 700;
  letter-spacing: -0.5px;
  background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-accent) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.nav {
  display: flex;
  align-items: center;
  gap: 32px;
}

.nav a {
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--color-text-muted);
  transition: color 0.2s;
}

.nav a:hover {
  color: var(--color-text);
}

.nav-cta {
  background: var(--color-primary);
  color: white !important;
  padding: 8px 20px;
  border-radius: var(--radius-full);
  font-size: 0.85rem !important;
  transition: background 0.2s, transform 0.2s !important;
}

.nav-cta:hover {
  background: var(--color-primary-hover);
  transform: translateY(-1px);
}

.mobile-toggle {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  padding: 4px;
}

.mobile-toggle span {
  display: block;
  width: 22px;
  height: 2px;
  background: var(--color-text);
  margin: 5px 0;
  transition: 0.3s;
}

/* ============================================
   Hero
   ============================================ */
.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 120px 24px 80px;
  text-align: center;
  position: relative;
  overflow: hidden;
}

/* Subtle background decoration */
.hero::before {
  content: '';
  position: absolute;
  top: -200px;
  right: -200px;
  width: 600px;
  height: 600px;
  background: radial-gradient(circle, var(--color-primary-light) 0%, transparent 70%);
  border-radius: 50%;
  pointer-events: none;
  opacity: 0.6;
}

.hero::after {
  content: '';
  position: absolute;
  bottom: -100px;
  left: -150px;
  width: 400px;
  height: 400px;
  background: radial-gradient(circle, rgba(139, 92, 246, 0.08) 0%, transparent 70%);
  border-radius: 50%;
  pointer-events: none;
}

.hero-content {
  max-width: 640px;
  position: relative;
  z-index: 1;
}

.badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: var(--color-primary-light);
  color: var(--color-primary-hover);
  padding: 6px 16px;
  border-radius: var(--radius-full);
  font-size: 0.8rem;
  font-weight: 600;
  margin-bottom: 28px;
  letter-spacing: 0.02em;
}

.badge::before {
  content: '';
  width: 8px;
  height: 8px;
  background: var(--color-primary);
  border-radius: 50%;
  animation: pulse 2s ease-in-out infinite;
}

@keyframes pulse {
  0%, 100% { opacity: 1; transform: scale(1); }
  50% { opacity: 0.5; transform: scale(0.8); }
}

.hero h1 {
  font-size: clamp(2.5rem, 6vw, 3.75rem);
  font-weight: 800;
  line-height: 1.1;
  letter-spacing: -1.5px;
  margin-bottom: 20px;
}

.hero h1 .highlight {
  background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-accent) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero p {
  font-size: 1.15rem;
  color: var(--color-text-muted);
  line-height: 1.7;
  margin-bottom: 36px;
  max-width: 520px;
  margin-left: auto;
  margin-right: auto;
}

.hero-actions {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 16px;
}

.btn-whatsapp {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  background: var(--color-whatsapp);
  color: white;
  padding: 16px 36px;
  border-radius: var(--radius-full);
  font-size: 1.05rem;
  font-weight: 600;
  border: none;
  cursor: pointer;
  transition: transform 0.2s, box-shadow 0.2s;
  box-shadow: 0 4px 14px rgba(37, 211, 102, 0.35);
}

.btn-whatsapp:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(37, 211, 102, 0.45);
}

.btn-whatsapp svg {
  width: 22px;
  height: 22px;
  fill: currentColor;
}

.hero-sub {
  font-size: 0.85rem;
  color: var(--color-text-light);
}

/* ============================================
   How It Works
   ============================================ */
.how-it-works {
  padding: var(--section-padding);
  max-width: var(--max-width);
  margin: 0 auto;
}

.section-label {
  font-size: 0.8rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--color-primary);
  margin-bottom: 12px;
}

.section-title {
  font-size: clamp(1.75rem, 4vw, 2.5rem);
  font-weight: 800;
  letter-spacing: -0.5px;
  margin-bottom: 56px;
}

.steps {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.step {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 36px 28px;
  position: relative;
  transition: transform 0.4s ease, box-shadow 0.4s ease;
}

.step.active {
  transform: translateY(-4px);
  box-shadow: var(--shadow-lg);
}

.step.active .step-number {
  background: var(--color-primary);
  color: white;
}

/* Chat bubble tail */
.step::after {
  content: '';
  position: absolute;
  bottom: -8px;
  left: 32px;
  width: 16px;
  height: 16px;
  background: var(--color-surface);
  border-right: 1px solid var(--color-border);
  border-bottom: 1px solid var(--color-border);
  transform: rotate(45deg);
}

.step-number {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  border-radius: var(--radius-sm);
  background: var(--color-primary-light);
  color: var(--color-primary);
  font-size: 0.85rem;
  font-weight: 700;
  margin-bottom: 20px;
}

.step h3 {
  font-size: 1.15rem;
  font-weight: 700;
  margin-bottom: 8px;
  letter-spacing: -0.3px;
}

.step p {
  font-size: 0.9rem;
  color: var(--color-text-muted);
  line-height: 1.6;
}

/* ============================================
   Platforms
   ============================================ */
.platforms {
  padding: var(--section-padding);
  background: var(--color-surface);
  border-top: 1px solid var(--color-border);
  border-bottom: 1px solid var(--color-border);
}

.platforms-inner {
  max-width: var(--max-width);
  margin: 0 auto;
  text-align: center;
}

.platform-grid {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 16px;
  max-width: 700px;
  margin: 0 auto;
}

.platform-card {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 12px;
  padding: 28px 16px;
  border-radius: var(--radius-lg);
  border: 1px solid var(--color-border);
  background: var(--color-bg);
  transition: transform 0.2s, box-shadow 0.2s;
  position: relative;
}

.platform-card:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}

.platform-card.active {
  border-color: var(--color-whatsapp);
  background: rgba(37, 211, 102, 0.04);
}

.platform-card.active:hover {
  box-shadow: 0 4px 12px rgba(37, 211, 102, 0.15);
}

.platform-card.coming-soon {
  opacity: 0.5;
}

.platform-card.coming-soon:hover {
  transform: none;
  box-shadow: none;
}

.platform-icon {
  width: 44px;
  height: 44px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.6rem;
  border-radius: var(--radius-md);
  background: var(--color-surface);
}

.platform-card.active .platform-icon {
  background: rgba(37, 211, 102, 0.1);
}

.platform-name {
  font-size: 0.85rem;
  font-weight: 600;
}

.coming-soon-tag {
  font-size: 0.65rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--color-text-light);
  background: var(--color-surface);
  padding: 2px 8px;
  border-radius: var(--radius-full);
}

/* ============================================
   Footer
   ============================================ */
.footer {
  padding: 48px 24px;
  text-align: center;
  max-width: var(--max-width);
  margin: 0 auto;
}

.footer-powered {
  font-size: 0.85rem;
  color: var(--color-text-light);
  margin-bottom: 16px;
}

.footer-brand {
  font-weight: 700;
  background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-accent) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.footer-links {
  display: flex;
  justify-content: center;
  gap: 24px;
  margin-bottom: 20px;
}

.footer-links a {
  font-size: 0.85rem;
  color: var(--color-text-muted);
  transition: color 0.2s;
}

.footer-links a:hover {
  color: var(--color-text);
}

.footer-copy {
  font-size: 0.8rem;
  color: var(--color-text-light);
}

/* ============================================
   Floating WhatsApp Button
   ============================================ */
.fab-whatsapp {
  position: fixed;
  bottom: 28px;
  right: 28px;
  z-index: 99;
  width: 56px;
  height: 56px;
  background: var(--color-whatsapp);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 4px 12px rgba(37, 211, 102, 0.4);
  cursor: pointer;
  border: none;
  transition: transform 0.2s, box-shadow 0.2s;
}

.fab-whatsapp:hover {
  transform: scale(1.08);
  box-shadow: 0 6px 20px rgba(37, 211, 102, 0.5);
}

.fab-whatsapp svg {
  width: 28px;
  height: 28px;
  fill: white;
}

/* ============================================
   Legal Pages
   ============================================ */
.legal {
  max-width: 720px;
  margin: 0 auto;
  padding: 120px 24px 80px;
}

.legal h1 {
  font-size: 2rem;
  font-weight: 800;
  letter-spacing: -0.5px;
  margin-bottom: 8px;
}

.legal .legal-updated {
  font-size: 0.85rem;
  color: var(--color-text-light);
  margin-bottom: 40px;
}

.legal h2 {
  font-size: 1.2rem;
  font-weight: 700;
  margin-top: 36px;
  margin-bottom: 12px;
  letter-spacing: -0.3px;
}

.legal p {
  font-size: 0.95rem;
  color: var(--color-text-muted);
  line-height: 1.75;
  margin-bottom: 12px;
}

.legal ul {
  margin: 12px 0;
  padding-left: 24px;
}

.legal li {
  font-size: 0.95rem;
  color: var(--color-text-muted);
  line-height: 1.75;
  margin-bottom: 6px;
}

.legal a {
  color: var(--color-primary);
  font-weight: 500;
}

.legal a:hover {
  text-decoration: underline;
}

.legal-back {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--color-text-muted);
  margin-bottom: 32px;
  transition: color 0.2s;
}

.legal-back:hover {
  color: var(--color-text);
}

/* ============================================
   Responsive
   ============================================ */
@media (max-width: 768px) {
  .nav {
    display: none;
  }

  .nav.open {
    display: flex;
    flex-direction: column;
    position: absolute;
    top: 64px;
    left: 0;
    right: 0;
    background: var(--color-surface);
    padding: 16px 24px 24px;
    border-bottom: 1px solid var(--color-border);
    gap: 16px;
    box-shadow: var(--shadow-md);
  }

  .mobile-toggle {
    display: block;
  }

  .hero {
    padding: 100px 24px 60px;
    min-height: auto;
  }

  .hero h1 {
    font-size: 2.25rem;
  }

  .steps {
    grid-template-columns: 1fr;
    max-width: 400px;
    margin: 0 auto;
  }

  .step::after {
    display: none;
  }

  .platform-grid {
    grid-template-columns: repeat(3, 1fr);
    max-width: 360px;
  }

  .fab-whatsapp {
    bottom: 20px;
    right: 20px;
  }
}

@media (max-width: 480px) {
  .platform-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}