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

:root {
  --bg-primary: #0a0a0b;
  --bg-secondary: #111113;
  --bg-card: #16161a;
  --text-primary: #ffffff;
  --text-secondary: #a1a1aa;
  --text-muted: #71717a;
  --border-color: #27272a;
  --accent: #25D366;
  --accent-glow: rgba(37, 211, 102, 0.12);
  --danger: #ef4444;
  --success: #22c55e;
}

html {
  scroll-behavior: smooth;
}

body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
  background-color: var(--bg-primary);
  color: var(--text-primary);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

.container {
  max-width: 900px;
  margin: 0 auto;
  padding: 0 24px;
}

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

/* Header */
.header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  background: rgba(10, 10, 11, 0.85);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border-color);
}

.header-content {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 56px;
}

.logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: 600;
  font-size: 0.95rem;
}

.nav {
  display: flex;
  align-items: center;
  gap: 8px;
}

.nav a {
  font-size: 0.85rem;
  color: var(--text-muted);
  padding: 6px 12px;
  border-radius: 6px;
  transition: all 0.2s;
}

.nav a:hover {
  color: var(--text-primary);
  background: var(--bg-card);
}

/* Hero */
.hero {
  padding: 140px 0 60px;
  text-align: center;
  background: radial-gradient(ellipse at top, var(--accent-glow) 0%, transparent 50%);
}

.badge {
  display: inline-block;
  padding: 6px 14px;
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: 100px;
  font-size: 0.8rem;
  color: var(--text-secondary);
  margin-bottom: 28px;
}

.hero h1 {
  font-size: clamp(2rem, 5vw, 3rem);
  font-weight: 700;
  line-height: 1.15;
  margin-bottom: 20px;
  letter-spacing: -0.02em;
}

.highlight {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  color: var(--accent);
}

.wa-icon {
  vertical-align: middle;
}

.hero-subtitle {
  font-size: 1.1rem;
  color: var(--text-secondary);
  max-width: 480px;
  margin: 0 auto 36px;
}

/* CTAs */
.hero-ctas {
  display: flex;
  gap: 12px;
  justify-content: center;
  flex-wrap: wrap;
}

.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 12px 20px;
  border-radius: 8px;
  font-size: 0.95rem;
  font-weight: 500;
  transition: all 0.2s;
  cursor: pointer;
  border: none;
}

.btn-primary {
  background: var(--accent);
  color: #000;
}

.btn-primary:hover:not(:disabled) {
  transform: translateY(-2px);
  box-shadow: 0 6px 20px var(--accent-glow);
}

.chrome-btn {
  font-weight: 600;
}

.chrome-btn svg {
  transition: transform 0.2s;
}

.chrome-btn:hover svg {
  transform: scale(1.1);
}

.btn-disabled {
  background: var(--bg-card) !important;
  color: var(--text-muted) !important;
  border: 1px solid var(--border-color);
  cursor: not-allowed;
}

.btn-disabled:hover {
  transform: none;
  box-shadow: none;
}

.coming-soon {
  font-size: 0.6rem;
  background: var(--border-color);
  color: var(--text-muted);
  padding: 3px 8px;
  border-radius: 4px;
  margin-left: 8px;
  text-transform: uppercase;
  letter-spacing: 0.03em;
  font-weight: 500;
}

.btn-secondary {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  color: var(--text-primary);
}

.btn-secondary:hover {
  border-color: var(--text-muted);
}

.github-btn {
  gap: 6px;
}

.star-badge {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  background: rgba(246, 194, 68, 0.1);
  padding: 2px 8px;
  border-radius: 12px;
  font-size: 0.8rem;
  margin-left: 4px;
}

/* Comparison (Antes/Después) */
.comparison {
  padding: 60px 0;
  background: var(--bg-secondary);
  border-top: 1px solid var(--border-color);
  border-bottom: 1px solid var(--border-color);
}

.comparison-grid {
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  gap: 20px;
  align-items: center;
}

.comparison-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: 12px;
  padding: 24px;
  position: relative;
}

.comparison-label {
  position: absolute;
  top: -10px;
  left: 16px;
  background: var(--bg-card);
  padding: 2px 10px;
  font-size: 0.75rem;
  font-weight: 600;
  border-radius: 4px;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.before .comparison-label {
  color: var(--danger);
  border: 1px solid var(--danger);
}

.after .comparison-label {
  color: var(--success);
  border: 1px solid var(--success);
}

.comparison-demo {
  background: var(--bg-primary);
  border-radius: 6px;
  padding: 14px;
  margin: 12px 0;
  font-size: 0.85rem;
}

.comparison-demo code {
  color: var(--text-muted);
  word-break: break-word;
}

.click-demo {
  color: var(--accent);
  font-weight: 500;
}

.comparison-card p {
  color: var(--text-secondary);
  font-size: 0.9rem;
  margin-bottom: 12px;
}

.comparison-time {
  display: inline-block;
  padding: 4px 10px;
  border-radius: 4px;
  font-size: 0.8rem;
  font-weight: 600;
}

.before .comparison-time {
  background: rgba(239, 68, 68, 0.1);
  color: var(--danger);
}

.after .comparison-time {
  background: rgba(34, 197, 94, 0.1);
  color: var(--success);
}

.comparison-arrow {
  font-size: 1.5rem;
  color: var(--text-muted);
}

.time-saved {
  text-align: center;
  margin-top: 32px;
  color: var(--text-secondary);
  font-size: 0.95rem;
}

.time-saved strong {
  color: var(--accent);
}

/* How it Works */
.how-it-works {
  padding: 70px 0;
}

.how-it-works h2 {
  font-size: 1.75rem;
  font-weight: 700;
  text-align: center;
  margin-bottom: 40px;
}

.steps {
  display: flex;
  flex-direction: column;
  gap: 24px;
  max-width: 500px;
  margin: 0 auto;
}

.step {
  display: flex;
  gap: 16px;
  align-items: flex-start;
}

.step-number {
  flex-shrink: 0;
  width: 32px;
  height: 32px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: 8px;
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--accent);
}

.step strong {
  display: block;
  margin-bottom: 4px;
}

.step p {
  color: var(--text-secondary);
  font-size: 0.9rem;
}

/* Privacy */
.privacy {
  padding: 70px 0;
  background: var(--bg-secondary);
  border-top: 1px solid var(--border-color);
}

.privacy h2 {
  font-size: 1.75rem;
  font-weight: 700;
  text-align: center;
  margin-bottom: 40px;
}

.privacy-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  margin-bottom: 32px;
}

.privacy-item {
  text-align: center;
}

.privacy-item strong {
  display: block;
  margin-bottom: 8px;
  color: var(--accent);
}

.privacy-item p {
  color: var(--text-secondary);
  font-size: 0.9rem;
  line-height: 1.6;
}

.privacy-note {
  text-align: center;
  color: var(--text-muted);
  font-size: 0.85rem;
}

.privacy-note a {
  color: var(--text-secondary);
  text-decoration: underline;
}

.privacy-note a:hover {
  color: var(--text-primary);
}

@media (max-width: 700px) {
  .privacy-grid {
    grid-template-columns: 1fr;
    gap: 28px;
  }
}

/* Footer */
.footer {
  padding: 32px 0;
  border-top: 1px solid var(--border-color);
}

.footer-content {
  display: flex;
  justify-content: center;
}

.author-link {
  display: flex;
  align-items: center;
  gap: 6px;
  color: var(--text-muted);
  text-decoration: none;
  font-size: 0.8rem;
  transition: color 0.2s;
}

.author-link:hover {
  color: var(--text-secondary);
}

.heart-icon {
  color: var(--text-muted);
}

.author-link:hover .heart-icon {
  color: #e25555;
}

.author-avatar {
  width: 14px;
  height: 14px;
  border-radius: 50%;
  border: 1px solid var(--border-color);
}

/* Responsive */
@media (max-width: 700px) {
  .comparison-grid {
    grid-template-columns: 1fr;
    gap: 16px;
  }
  
  .comparison-arrow {
    transform: rotate(90deg);
    text-align: center;
  }
}

@media (max-width: 600px) {
  .hero {
    padding: 110px 0 50px;
  }
  
  .hero h1 {
    font-size: 1.75rem;
  }
  
  .wa-icon {
    width: 28px;
    height: 28px;
  }
  
  .hero-subtitle {
    font-size: 1rem;
  }
  
  .hero-ctas {
    flex-direction: column;
    align-items: center;
  }
  
  .btn {
    width: 100%;
    max-width: 260px;
    justify-content: center;
  }
  
  .how-it-works h2 {
    font-size: 1.5rem;
  }
  
  .step {
    flex-direction: column;
    text-align: center;
    gap: 12px;
  }
  
  .step-number {
    margin: 0 auto;
  }
}