/* ========================================
   DocLens Main Styles
   ======================================== */

:root {
  --color-primary: #2563eb;
  --color-primary-dark: #1e40af;
  --color-primary-light: #3b82f6;
  --color-secondary: #0891b2;
  --color-accent: #06b6d4;
  --color-text: #1f2937;
  --color-text-light: #6b7280;
  --color-background: #ffffff;
  --color-background-gray: #f9fafb;
  --color-border: #e5e7eb;
  --font-serif: 'Libre Baskerville', Georgia, serif;
  --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --max-width: 1200px;
  --spacing-xs: 0.5rem;
  --spacing-sm: 1rem;
  --spacing-md: 2rem;
  --spacing-lg: 4rem;
  --spacing-xl: 6rem;
}

/* ========================================
   Base Styles
   ======================================== */

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

body {
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: 1.6;
  color: var(--color-text);
  background-color: var(--color-background);
}

h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-serif);
  line-height: 1.2;
  font-weight: 700;
  color: var(--color-text);
}

a {
  color: var(--color-primary);
  text-decoration: none;
  transition: color 0.2s ease;
}

a:hover {
  color: var(--color-primary-dark);
}

.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 var(--spacing-md);
}

/* ========================================
   Navigation
   ======================================== */

.nav {
  background: var(--color-background);
  border-bottom: 1px solid var(--color-border);
  position: sticky;
  top: 0;
  z-index: 100;
}

.nav-content {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: var(--spacing-sm) 0;
}

.logo {
  font-family: var(--font-serif);
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--color-primary);
}

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

.nav-links {
  display: flex;
  list-style: none;
  gap: var(--spacing-md);
  align-items: center;
}

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

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

.nav-link-signin {
  padding: 0.5rem 1.25rem;
  background: var(--color-background-gray);
  border-radius: 6px;
  color: var(--color-text) !important;
}

.nav-link-signin:hover {
  background: var(--color-border);
}

/* Mobile nav toggle */
@media (max-width: 768px) {
  .nav-links {
    display: none;
  }
}

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

.hero {
  padding: var(--spacing-xl) 0;
  text-align: center;
  background: linear-gradient(135deg, #f0f9ff 0%, #e0f2fe 100%);
}

.hero-title {
  font-size: 3.5rem;
  margin-bottom: var(--spacing-md);
  color: var(--color-text);
}

.hero-subtitle {
  font-size: 1.25rem;
  color: var(--color-text-light);
  max-width: 700px;
  margin: 0 auto var(--spacing-lg);
  line-height: 1.8;
}

.hero-cta {
  display: flex;
  gap: var(--spacing-sm);
  justify-content: center;
  margin-bottom: var(--spacing-sm);
}

.hero-note {
  color: var(--color-text-light);
  font-size: 0.9rem;
}

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

.btn {
  display: inline-block;
  padding: 0.75rem 2rem;
  border-radius: 8px;
  font-weight: 600;
  font-size: 1rem;
  text-align: center;
  cursor: pointer;
  transition: all 0.2s ease;
  border: none;
  text-decoration: none;
}

.btn-large {
  padding: 1rem 2.5rem;
  font-size: 1.1rem;
}

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

.btn-primary:hover {
  background: var(--color-primary-dark);
  transform: translateY(-2px);
  box-shadow: 0 4px 12px rgba(37, 99, 235, 0.3);
  color: white;
}

.btn-secondary {
  background: white;
  color: var(--color-primary);
  border: 2px solid var(--color-primary);
}

.btn-secondary:hover {
  background: var(--color-primary);
  color: white;
}

.btn-block {
  display: block;
  width: 100%;
}

/* ========================================
   Sections
   ======================================== */

.section {
  padding: var(--spacing-xl) 0;
}

.section-gray {
  background: var(--color-background-gray);
}

.section-title {
  font-size: 2.5rem;
  text-align: center;
  margin-bottom: var(--spacing-lg);
  color: var(--color-text);
}

/* ========================================
   How It Works - Steps
   ======================================== */

.steps {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--spacing-xl);
  max-width: 850px;
  margin: 0 auto;
}

.step {
  text-align: center;
}

.step-number {
  width: 50px;
  height: 50px;
  background: var(--color-primary);
  color: white;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
  font-weight: 700;
  margin: 0 auto var(--spacing-md);
}

.step-image {
  margin-top: var(--spacing-md);
}

.step-video,
.step-screenshot {
  width: 100%;
  height: auto;
  border-radius: 8px;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
  border: 1px solid var(--color-border);
}

.placeholder-image {
  background: var(--color-border);
  border-radius: 8px;
  padding: var(--spacing-lg);
  color: var(--color-text-light);
  font-style: italic;
  min-height: 200px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.step-title {
  font-size: 1.5rem;
  margin-bottom: var(--spacing-sm);
}

.step-description {
  color: var(--color-text-light);
  line-height: 1.8;
}

@media (max-width: 768px) {
  .steps {
    max-width: 100%;
  }
}

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

.features-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--spacing-md);
}

.feature {
  padding: var(--spacing-md);
  background: white;
  border-radius: 8px;
  border: 1px solid var(--color-border);
}

.feature-icon {
  font-size: 2.5rem;
  margin-bottom: var(--spacing-sm);
}

.feature-title {
  font-size: 1.25rem;
  margin-bottom: var(--spacing-sm);
}

.feature-description {
  color: var(--color-text-light);
  line-height: 1.7;
}

@media (max-width: 768px) {
  .features-grid {
    grid-template-columns: 1fr;
  }
}

/* ========================================
   Testimonials
   ======================================== */

.testimonials {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--spacing-md);
  max-width: 1000px;
  margin: 0 auto;
}

.testimonial {
  background: white;
  padding: var(--spacing-md);
  border-radius: 8px;
  border: 1px solid var(--color-border);
}

.testimonial-quote {
  font-size: 1rem;
  line-height: 1.7;
  margin-bottom: var(--spacing-sm);
  color: var(--color-text);
}

.testimonial-author {
  color: var(--color-text-light);
  font-size: 0.9rem;
  font-style: italic;
}

@media (max-width: 768px) {
  .testimonials {
    grid-template-columns: 1fr;
  }
}

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

.pricing-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--spacing-md);
  max-width: 900px;
  margin: 0 auto;
}

.pricing-card {
  background: white;
  border: 2px solid var(--color-border);
  border-radius: 12px;
  padding: var(--spacing-lg);
  text-align: center;
}

.pricing-card-highlight {
  border-color: var(--color-primary);
  box-shadow: 0 4px 24px rgba(37, 99, 235, 0.15);
  position: relative;
}

.pricing-title {
  font-size: 1.5rem;
  margin-bottom: var(--spacing-md);
}

.pricing-options {
  display: flex;
  align-items: flex-start;
  justify-content: center;
  gap: var(--spacing-sm);
  margin-bottom: var(--spacing-md);
}

.pricing-option {
  flex: 1;
  text-align: center;
  display: flex;
  flex-direction: column;
  align-items: center;
}

.pricing-divider {
  color: var(--color-text-light);
  font-size: 1rem;
  padding: 0 var(--spacing-sm);
  margin-top: 1rem;
}

.pricing-options .pricing-price {
  margin-bottom: 0;
}

.pricing-price {
  margin-bottom: var(--spacing-md);
}

.pricing-amount {
  font-size: 3rem;
  font-weight: 700;
  color: var(--color-primary);
}

.pricing-period {
  font-size: 1.25rem;
  color: var(--color-text-light);
}

.pricing-billing {
  font-size: 0.9rem;
  color: var(--color-text-light);
  margin-top: 0.5rem;
  min-height: 1.5rem;
}

.pricing-features {
  list-style: none;
  margin-bottom: var(--spacing-md);
  text-align: left;
}

.pricing-features li {
  padding: 0.75rem 0;
  border-bottom: 1px solid var(--color-border);
  color: var(--color-text);
}

.pricing-features li:last-child {
  border-bottom: none;
}

.pricing-cta {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-xs);
}

.pricing-cta-divider {
  text-align: center;
  color: var(--color-text-light);
  font-size: 0.9rem;
  margin: 0;
}

.pricing-note {
  margin-top: var(--spacing-sm);
  color: var(--color-text-light);
  font-size: 0.9rem;
}

@media (max-width: 768px) {
  .pricing-grid {
    grid-template-columns: 1fr;
  }

  .pricing-options {
    flex-direction: column;
    gap: var(--spacing-md);
  }

  .pricing-divider {
    padding: 0;
  }
}

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

.faq-list {
  max-width: 800px;
  margin: 0 auto;
}

.faq-item {
  background: white;
  padding: var(--spacing-md);
  margin-bottom: var(--spacing-sm);
  border-radius: 8px;
  border: 1px solid var(--color-border);
}

.faq-question {
  font-size: 1.25rem;
  margin-bottom: var(--spacing-sm);
  color: var(--color-text);
}

.faq-answer {
  color: var(--color-text-light);
  line-height: 1.8;
}

/* ========================================
   Privacy Policy
   ======================================== */

.privacy-content {
  max-width: 800px;
  margin: 0 auto;
}

.privacy-section {
  margin-bottom: var(--spacing-lg);
}

.privacy-section h3 {
  font-size: 1.5rem;
  margin-bottom: var(--spacing-sm);
  color: var(--color-text);
}

.privacy-section p {
  color: var(--color-text-light);
  line-height: 1.8;
  margin-bottom: var(--spacing-sm);
}

.privacy-section ul {
  margin: var(--spacing-sm) 0;
  padding-left: var(--spacing-md);
  color: var(--color-text-light);
  line-height: 1.8;
}

.privacy-section li {
  margin-bottom: 0.5rem;
}

.privacy-updated {
  font-style: italic;
  font-size: 0.9rem;
  margin-top: var(--spacing-md);
}

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

.footer {
  background: var(--color-text);
  color: white;
  padding: var(--spacing-lg) 0 var(--spacing-md);
}

.footer-content {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--spacing-md);
  margin-bottom: var(--spacing-lg);
}

.footer-title {
  font-size: 1.1rem;
  margin-bottom: var(--spacing-sm);
  color: white;
}

.footer-text {
  color: #9ca3af;
  line-height: 1.7;
}

.footer-links {
  list-style: none;
}

.footer-links li {
  margin-bottom: 0.5rem;
}

.footer-links a {
  color: #9ca3af;
  transition: color 0.2s ease;
}

.footer-links a:hover {
  color: white;
}

.footer-bottom {
  border-top: 1px solid #374151;
  padding-top: var(--spacing-md);
  text-align: center;
  color: #9ca3af;
}

@media (max-width: 768px) {
  .footer-content {
    grid-template-columns: 1fr 1fr;
  }
}

@media (max-width: 480px) {
  .footer-content {
    grid-template-columns: 1fr;
  }

  .hero-title {
    font-size: 2.5rem;
  }

  .hero-cta {
    flex-direction: column;
  }
}