/* ==========================================
   Auto Refresh Extension — Landing Page
   ========================================== */

:root {
  --blue: #3B5BDB;
  --blue-dark: #2B4BC8;
  --blue-light: #EDF2FF;
  --green: #12B886;
  --dark: #1A1D2E;
  --text: #3B3F54;
  --text-light: #6B7089;
  --bg: #FFFFFF;
  --bg-alt: #F6F7FB;
  --border: #E2E4ED;
  --radius: 10px;
  --radius-lg: 16px;
  --max-w: 1120px;
  --font: 'Plus Jakarta Sans', -apple-system, BlinkMacSystemFont, sans-serif;
}

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

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

body {
  font-family: var(--font);
  color: var(--text);
  background: var(--bg);
  line-height: 1.65;
  font-size: 16px;
}

a {
  color: var(--blue);
  text-decoration: none;
}

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

/* Layout */
.container {
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 0 24px;
}

.container-narrow {
  max-width: 760px;
}

.section {
  padding: 80px 0;
}

.section-alt {
  background: var(--bg-alt);
}

.section-title {
  font-size: 2rem;
  font-weight: 800;
  color: var(--dark);
  text-align: center;
  margin-bottom: 16px;
  letter-spacing: -0.02em;
}

.section-sub {
  text-align: center;
  color: var(--text-light);
  font-size: 1.1rem;
  margin-bottom: 48px;
}

/* ==========================================
   Nav
   ========================================== */

.nav {
  position: sticky;
  top: 0;
  background: rgba(255,255,255,0.92);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
  z-index: 100;
}

.nav-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 64px;
}

.logo {
  font-size: 1.2rem;
  font-weight: 800;
  color: var(--dark);
  display: flex;
  align-items: center;
  gap: 6px;
}

.logo-icon {
  font-size: 1.5rem;
  color: var(--blue);
}

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

.nav-links a {
  color: var(--text);
  font-size: 0.95rem;
  font-weight: 500;
  transition: color 0.15s;
}

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

.mobile-menu-btn {
  display: none;
  background: none;
  border: none;
  font-size: 1.5rem;
  cursor: pointer;
  color: var(--dark);
}

/* ==========================================
   Buttons
   ========================================== */

.btn {
  display: inline-block;
  padding: 10px 24px;
  background: var(--blue);
  color: #fff;
  font-weight: 600;
  font-size: 0.95rem;
  border-radius: var(--radius);
  border: 2px solid var(--blue);
  transition: background 0.15s, transform 0.1s;
  cursor: pointer;
  text-align: center;
}

.btn:hover {
  background: var(--blue-dark);
  border-color: var(--blue-dark);
  color: #fff;
}

.btn:active {
  transform: scale(0.98);
}

.btn-lg {
  padding: 14px 32px;
  font-size: 1.05rem;
  border-radius: 12px;
}

.btn-sm {
  padding: 8px 18px;
  font-size: 0.85rem;
}

.btn-outline {
  background: transparent;
  color: var(--blue);
}

.btn-outline:hover {
  background: var(--blue-light);
  color: var(--blue);
}

.btn-white {
  background: #fff;
  color: var(--blue);
  border-color: #fff;
}

.btn-white:hover {
  background: var(--blue-light);
  border-color: var(--blue-light);
  color: var(--blue-dark);
}

/* ==========================================
   Hero
   ========================================== */

.hero {
  padding: 100px 0 80px;
  text-align: center;
}

.hero-badge {
  display: inline-block;
  padding: 6px 16px;
  background: var(--blue-light);
  color: var(--blue);
  font-size: 0.85rem;
  font-weight: 600;
  border-radius: 100px;
  margin-bottom: 24px;
}

.hero h1 {
  font-size: 3.5rem;
  font-weight: 800;
  color: var(--dark);
  line-height: 1.15;
  letter-spacing: -0.03em;
  margin-bottom: 20px;
}

.hero-sub {
  font-size: 1.15rem;
  color: var(--text-light);
  max-width: 580px;
  margin: 0 auto 32px;
  line-height: 1.7;
}

.hero-actions {
  margin-bottom: 20px;
}

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

/* ==========================================
   Split (Problem / Solution)
   ========================================== */

.split {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 48px;
}

.split-item h2 {
  font-size: 1.4rem;
  font-weight: 700;
  color: var(--dark);
  margin-bottom: 12px;
}

.split-item p {
  color: var(--text);
  line-height: 1.75;
}

/* ==========================================
   Features
   ========================================== */

.features-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 32px;
  margin-top: 48px;
}

.feature-card {
  padding: 28px;
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  background: var(--bg);
  transition: box-shadow 0.2s;
}

.feature-card:hover {
  box-shadow: 0 4px 24px rgba(59,91,219,0.08);
}

.feature-icon {
  font-size: 1.8rem;
  margin-bottom: 14px;
}

.feature-card h3 {
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--dark);
  margin-bottom: 8px;
}

.feature-card p {
  font-size: 0.92rem;
  color: var(--text-light);
  line-height: 1.65;
}

/* ==========================================
   Use Cases
   ========================================== */

.usecases-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  margin-top: 48px;
}

.usecase {
  padding: 24px;
  background: var(--bg);
  border-radius: var(--radius);
  border: 1px solid var(--border);
}

.usecase strong {
  color: var(--dark);
  display: block;
  margin-bottom: 6px;
  font-size: 1rem;
}

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

/* ==========================================
   Pricing
   ========================================== */

.pricing-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 32px;
  max-width: 780px;
  margin: 0 auto;
}

.pricing-card {
  padding: 36px 32px;
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  background: var(--bg);
  text-align: center;
  position: relative;
}

.pricing-card-pro {
  border: 2px solid var(--blue);
  box-shadow: 0 8px 32px rgba(59,91,219,0.1);
}

.pricing-badge {
  position: absolute;
  top: -13px;
  left: 50%;
  transform: translateX(-50%);
  background: var(--blue);
  color: #fff;
  font-size: 0.78rem;
  font-weight: 700;
  padding: 4px 16px;
  border-radius: 100px;
}

.pricing-name {
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--dark);
  margin-bottom: 8px;
}

.pricing-price {
  font-size: 3rem;
  font-weight: 800;
  color: var(--dark);
  letter-spacing: -0.03em;
  line-height: 1.1;
}

.pricing-period {
  font-size: 0.9rem;
  color: var(--text-light);
  margin-bottom: 28px;
}

.pricing-features {
  list-style: none;
  text-align: left;
  margin-bottom: 28px;
}

.pricing-features li {
  padding: 7px 0;
  font-size: 0.92rem;
  color: var(--text);
  border-bottom: 1px solid var(--bg-alt);
  padding-left: 24px;
  position: relative;
}

.pricing-features li::before {
  content: "✓";
  position: absolute;
  left: 0;
  color: var(--green);
  font-weight: 700;
}

/* ==========================================
   FAQ
   ========================================== */

.faq-list {
  margin-top: 48px;
}

.faq-item {
  border-bottom: 1px solid var(--border);
  padding: 20px 0;
}

.faq-item summary {
  font-size: 1.05rem;
  font-weight: 600;
  color: var(--dark);
  cursor: pointer;
  list-style: none;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.faq-item summary::after {
  content: "+";
  font-size: 1.3rem;
  font-weight: 400;
  color: var(--text-light);
  transition: transform 0.2s;
}

.faq-item[open] summary::after {
  content: "−";
}

.faq-item summary::-webkit-details-marker {
  display: none;
}

.faq-item p {
  margin-top: 12px;
  color: var(--text-light);
  line-height: 1.75;
  font-size: 0.95rem;
}

/* ==========================================
   CTA Section
   ========================================== */

.cta-section {
  background: var(--dark);
  text-align: center;
  padding: 80px 0;
}

.cta-section h2 {
  font-size: 2rem;
  font-weight: 800;
  color: #fff;
  margin-bottom: 12px;
  letter-spacing: -0.02em;
}

.cta-section p {
  color: rgba(255,255,255,0.65);
  font-size: 1.05rem;
  margin-bottom: 28px;
}

/* ==========================================
   Footer
   ========================================== */

.footer {
  padding: 48px 0 24px;
  border-top: 1px solid var(--border);
}

.footer-inner {
  display: flex;
  justify-content: space-between;
  gap: 48px;
  margin-bottom: 36px;
}

.footer-brand {
  font-size: 1.1rem;
  font-weight: 800;
  color: var(--dark);
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.footer-copy {
  font-size: 0.85rem;
  font-weight: 400;
  color: var(--text-light);
}

.footer-links {
  display: flex;
  gap: 64px;
}

.footer-col {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.footer-col strong {
  font-size: 0.85rem;
  color: var(--dark);
  margin-bottom: 4px;
}

.footer-col a {
  font-size: 0.88rem;
  color: var(--text-light);
  transition: color 0.15s;
}

.footer-col a:hover {
  color: var(--blue);
}

.footer-bottom {
  font-size: 0.82rem;
  color: var(--text-light);
  text-align: center;
  padding-top: 24px;
  border-top: 1px solid var(--border);
}

/* ==========================================
   Legal Pages
   ========================================== */

.legal-page {
  padding: 120px 0 80px;
}

.legal-page h1 {
  font-size: 2rem;
  font-weight: 800;
  color: var(--dark);
  margin-bottom: 8px;
}

.legal-page .legal-updated {
  color: var(--text-light);
  font-size: 0.9rem;
  margin-bottom: 36px;
}

.legal-page h2 {
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--dark);
  margin-top: 32px;
  margin-bottom: 12px;
}

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

.legal-page ul {
  padding-left: 24px;
  margin-bottom: 16px;
}

.legal-page li {
  margin-bottom: 6px;
}

/* ==========================================
   Responsive
   ========================================== */

@media (max-width: 768px) {
  .hero h1 {
    font-size: 2.2rem;
  }

  .hero-sub {
    font-size: 1rem;
  }

  .section {
    padding: 56px 0;
  }

  .section-title {
    font-size: 1.6rem;
  }

  .split {
    grid-template-columns: 1fr;
    gap: 32px;
  }

  .features-grid {
    grid-template-columns: 1fr;
    gap: 20px;
  }

  .usecases-grid {
    grid-template-columns: 1fr;
    gap: 16px;
  }

  .pricing-grid {
    grid-template-columns: 1fr;
    gap: 24px;
  }

  .nav-links {
    display: none;
    position: absolute;
    top: 64px;
    left: 0;
    right: 0;
    background: #fff;
    flex-direction: column;
    padding: 24px;
    gap: 20px;
    border-bottom: 1px solid var(--border);
    box-shadow: 0 8px 24px rgba(0,0,0,0.08);
  }

  .nav-links.open {
    display: flex;
  }

  .mobile-menu-btn {
    display: block;
  }

  .footer-inner {
    flex-direction: column;
    gap: 32px;
  }

  .footer-links {
    flex-direction: column;
    gap: 24px;
  }

  .cta-section h2 {
    font-size: 1.5rem;
  }
}