/* ChatSlash Marketing Site Stylesheet */
:root {
  --primary-color: #25D366;
  --primary-hover: #1EBE5D;
  --text-color: #1a1a1a;
  --text-muted: #666666;
  --bg-color: #ffffff;
  --bg-light: #f5f5f5;
  --border-color: #e5e5e5;
  --card-bg: #ffffff;
  --font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
  --radius: 8px;
  --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.05);
  --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.08);
  --shadow-lg: 0 10px 24px rgba(0, 0, 0, 0.12);
  --max-width: 1120px;
}

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

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-family);
  color: var(--text-color);
  background-color: var(--bg-color);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  display: flex;
  flex-direction: column;
  min-height: 100vh;
}

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

a:focus-visible,
button:focus-visible {
  outline: 2px solid var(--primary-color);
  outline-offset: 3px;
}

.container {
  width: 100%;
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 1.5rem;
}

/* Header & Navigation */
.site-header {
  position: sticky;
  top: 0;
  background-color: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--border-color);
  z-index: 100;
}

.nav-container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 72px;
}

.logo {
  font-size: 1.35rem;
  font-weight: 700;
  color: var(--text-color);
  letter-spacing: -0.02em;
  display: flex;
  align-items: center;
  gap: 0.25rem;
}

.logo-slash {
  color: var(--primary-color);
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 2rem;
  list-style: none;
}

.nav-links a {
  font-size: 0.95rem;
  font-weight: 500;
  color: var(--text-muted);
}

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

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  font-size: 0.95rem;
  font-weight: 600;
  padding: 0.65rem 1.25rem;
  border-radius: var(--radius);
  border: 1px solid transparent;
  cursor: pointer;
  transition: all 0.2s ease;
  white-space: nowrap;
}

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

.btn-primary:hover {
  background-color: var(--primary-hover);
  color: #ffffff;
}

.btn-secondary {
  background-color: #ffffff;
  color: var(--text-color);
  border-color: var(--border-color);
}

.btn-secondary:hover {
  background-color: var(--bg-light);
}

.btn-dark {
  background-color: var(--text-color);
  color: #ffffff;
}

.btn-dark:hover {
  background-color: #333333;
  color: #ffffff;
}

.btn-whatsapp {
  background-color: var(--primary-color);
  color: #ffffff;
  font-weight: 600;
}

.btn-whatsapp:hover {
  background-color: var(--primary-hover);
  color: #ffffff;
}

.btn-whatsapp svg {
  width: 20px;
  height: 20px;
  fill: currentColor;
}

/* Hero Section */
.hero-section {
  padding: 5rem 0 4rem;
  text-align: center;
}

.hero-content {
  max-width: 780px;
  margin: 0 auto;
}

.hero-title {
  font-size: 3rem;
  line-height: 1.15;
  font-weight: 800;
  letter-spacing: -0.03em;
  color: var(--text-color);
  margin-bottom: 1.25rem;
}

.hero-description {
  font-size: 1.2rem;
  line-height: 1.6;
  color: var(--text-muted);
  margin-bottom: 2.25rem;
}

.hero-actions {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 1rem;
}

/* Features Section */
.features-section {
  padding: 5rem 0;
  background-color: var(--bg-light);
}

.section-header {
  text-align: center;
  margin-bottom: 3.5rem;
}

.section-title {
  font-size: 2.25rem;
  font-weight: 700;
  letter-spacing: -0.02em;
  color: var(--text-color);
  margin-bottom: 0.75rem;
}

.section-subtitle {
  font-size: 1.1rem;
  color: var(--text-muted);
}

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

.feature-card {
  background-color: var(--card-bg);
  border: 1px solid var(--border-color);
  border-radius: var(--radius);
  padding: 2.25rem 2rem;
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.feature-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
}

.feature-icon-wrapper {
  width: 48px;
  height: 48px;
  border-radius: var(--radius);
  background-color: rgba(37, 211, 102, 0.12);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 1.5rem;
  color: var(--primary-color);
}

.feature-icon-wrapper svg {
  width: 24px;
  height: 24px;
}

.feature-title {
  font-size: 1.25rem;
  font-weight: 700;
  margin-bottom: 0.75rem;
  color: var(--text-color);
}

.feature-text {
  color: var(--text-muted);
  font-size: 0.95rem;
  line-height: 1.55;
}

/* Pricing Section */
.pricing-section {
  padding: 5rem 0;
}

.pricing-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 2rem;
  max-width: 820px;
  margin: 0 auto;
}

.pricing-card {
  background-color: var(--card-bg);
  border: 1px solid var(--border-color);
  border-radius: var(--radius);
  padding: 2.5rem 2.25rem;
  display: flex;
  flex-direction: column;
  position: relative;
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.pricing-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
}

.pricing-card.popular {
  border-color: var(--primary-color);
  box-shadow: var(--shadow-md);
}

.popular-badge {
  position: absolute;
  top: -12px;
  left: 50%;
  transform: translateX(-50%);
  background-color: var(--primary-color);
  color: #ffffff;
  font-size: 0.75rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  padding: 0.25rem 0.75rem;
  border-radius: 999px;
}

.plan-name {
  font-size: 1.35rem;
  font-weight: 700;
  margin-bottom: 0.5rem;
}

.plan-price {
  display: flex;
  align-items: baseline;
  gap: 0.25rem;
  margin-bottom: 1.25rem;
}

.price-currency {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--text-color);
}

.price-amount {
  font-size: 3rem;
  font-weight: 800;
  line-height: 1;
  color: var(--text-color);
}

.price-period {
  font-size: 1rem;
  color: var(--text-muted);
}

.plan-description {
  color: var(--text-muted);
  font-size: 1rem;
  margin-bottom: 2rem;
  min-height: 2.5rem;
}

.pricing-card .btn {
  width: 100%;
  padding: 0.85rem 1.5rem;
  font-size: 1rem;
  margin-top: auto;
}

.pricing-notes {
  text-align: center;
  color: var(--text-muted);
  font-size: 0.9rem;
  margin-top: 2rem;
  max-width: 600px;
  margin-left: auto;
  margin-right: auto;
}

/* Final CTA Section */
.cta-section {
  padding: 5rem 0;
  background-color: var(--bg-light);
  text-align: center;
}

.cta-box {
  max-width: 640px;
  margin: 0 auto;
}

.cta-title {
  font-size: 2.25rem;
  font-weight: 800;
  letter-spacing: -0.02em;
  margin-bottom: 1rem;
}

.cta-description {
  font-size: 1.1rem;
  color: var(--text-muted);
  margin-bottom: 2rem;
}

/* Content Pages (Privacy, Terms, Contact) */
.page-header {
  padding: 4rem 0 2rem;
  text-align: center;
  background-color: var(--bg-light);
  border-bottom: 1px solid var(--border-color);
}

.page-title {
  font-size: 2.5rem;
  font-weight: 800;
  letter-spacing: -0.02em;
  margin-bottom: 0.75rem;
}

.page-subtitle {
  color: var(--text-muted);
  font-size: 0.95rem;
}

.legal-content {
  padding: 3.5rem 0 5rem;
  max-width: 800px;
  margin: 0 auto;
}

.legal-content section {
  margin-bottom: 2.5rem;
}

.legal-content h2 {
  font-size: 1.35rem;
  font-weight: 700;
  margin-bottom: 0.75rem;
  color: var(--text-color);
}

.legal-content p {
  color: #333333;
  margin-bottom: 1rem;
  font-size: 0.98rem;
  line-height: 1.7;
}

.legal-content ul {
  list-style: disc;
  margin-left: 1.5rem;
  margin-bottom: 1rem;
  color: #333333;
}

.legal-content li {
  margin-bottom: 0.5rem;
  font-size: 0.98rem;
  line-height: 1.6;
}

.legal-content a {
  color: var(--primary-hover);
  text-decoration: underline;
}

.legal-content a:hover {
  color: var(--primary-color);
}

/* Contact Page Specific */
.contact-section {
  padding: 4rem 0 5rem;
}

.contact-card-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 2rem;
  max-width: 820px;
  margin: 0 auto 3rem;
}

.contact-card {
  background-color: var(--card-bg);
  border: 1px solid var(--border-color);
  border-radius: var(--radius);
  padding: 2.5rem 2rem;
  text-align: center;
  display: flex;
  flex-direction: column;
  align-items: center;
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.contact-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
}

.contact-card .feature-icon-wrapper {
  margin-bottom: 1.25rem;
}

.contact-card h2 {
  font-size: 1.3rem;
  font-weight: 700;
  margin-bottom: 0.5rem;
}

.contact-card p {
  color: var(--text-muted);
  font-size: 0.95rem;
  margin-bottom: 1.5rem;
}

.contact-response-note {
  max-width: 600px;
  margin: 0 auto;
  text-align: center;
  padding: 1.25rem;
  background-color: var(--bg-light);
  border-radius: var(--radius);
  border: 1px solid var(--border-color);
  color: var(--text-muted);
  font-size: 0.95rem;
}

/* Cookie Banner */
.cookie-banner {
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  background-color: #1a1a1a;
  color: #ffffff;
  padding: 1rem 1.5rem;
  z-index: 1000;
  box-shadow: var(--shadow-lg);
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 1.5rem;
  font-size: 0.9rem;
}

.cookie-banner p {
  margin: 0;
  color: #f0f0f0;
}

.cookie-banner .btn-cookie {
  background-color: var(--primary-color);
  color: #ffffff;
  border: none;
  font-weight: 600;
  padding: 0.45rem 1.15rem;
  border-radius: var(--radius);
  cursor: pointer;
  font-size: 0.85rem;
  transition: background-color 0.2s ease;
  white-space: nowrap;
}

.cookie-banner .btn-cookie:hover {
  background-color: var(--primary-hover);
}

.cookie-banner.hidden {
  display: none !important;
}

/* Footer */
.site-footer {
  margin-top: auto;
  background-color: #ffffff;
  border-top: 1px solid var(--border-color);
  padding: 3rem 0 2rem;
  font-size: 0.9rem;
  color: var(--text-muted);
}

.footer-top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-bottom: 2rem;
  border-bottom: 1px solid var(--border-color);
  gap: 1.5rem;
  flex-wrap: wrap;
}

.footer-links {
  display: flex;
  align-items: center;
  gap: 1.75rem;
  list-style: none;
}

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

.footer-bottom {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-top: 2rem;
  gap: 1rem;
  flex-wrap: wrap;
}

.footer-bottom small {
  font-size: 0.85rem;
}

.footer-origin {
  color: #888888;
}

/* Responsive Styles (Mobile down to 375px) */
@media (max-width: 860px) {
  .features-grid {
    grid-template-columns: 1fr;
    gap: 1.5rem;
  }

  .pricing-grid {
    grid-template-columns: 1fr;
    max-width: 440px;
  }

  .contact-card-grid {
    grid-template-columns: 1fr;
    max-width: 440px;
  }
}

@media (max-width: 640px) {
  .nav-container {
    height: 64px;
  }

  .nav-links {
    gap: 1rem;
  }

  .nav-links a {
    font-size: 0.85rem;
  }

  .hero-section {
    padding: 3.5rem 0 3rem;
  }

  .hero-title {
    font-size: 2.15rem;
  }

  .hero-description {
    font-size: 1.05rem;
  }

  .hero-actions {
    flex-direction: column;
    width: 100%;
  }

  .hero-actions .btn {
    width: 100%;
  }

  .section-title,
  .cta-title,
  .page-title {
    font-size: 1.85rem;
  }

  .cookie-banner {
    flex-direction: column;
    align-items: stretch;
    text-align: center;
    gap: 0.75rem;
    padding: 1rem;
  }

  .cookie-banner .btn-cookie {
    width: 100%;
  }

  .footer-top,
  .footer-bottom {
    flex-direction: column;
    align-items: flex-start;
    gap: 1rem;
  }

  .footer-links {
    flex-direction: column;
    align-items: flex-start;
    gap: 0.75rem;
  }
}