/* ============================================================
   MAIN CSS - Non-critical styles
   Load after critical CSS via preload or standard link
   ============================================================ */

/* CSS Custom Properties */
:root {
  /* Colors */
  --color-primary: #203368;
  --color-accent: #57E6C3;
  --color-dark: #0E1726;
  --color-bg-light: #F5F7FA;
  --color-neutral: #7A889C;
  --color-white: #ffffff;
  --color-primary-hover: #1a2854;
  --color-accent-hover: #45d4b1;
  --color-border: rgba(0, 0, 0, 0.06);
  --color-border-medium: rgba(0, 0, 0, 0.12);
  
  /* Spacing */
  --spacing-xs: 0.5rem;
  --spacing-sm: 1rem;
  --spacing-md: 2rem;
  --spacing-lg: 4rem;
  --spacing-xl: 6rem;
  
  /* Border Radius */
  --radius-sm: 6px;
  --radius-md: 8px;
  --radius-lg: 12px;
  
  /* Shadows */
  --shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.06);
  --shadow-md: 0 4px 12px rgba(0, 0, 0, 0.08);
  --shadow-lg: 0 8px 24px rgba(0, 0, 0, 0.12);
  --shadow-hover: 0 6px 20px rgba(0, 0, 0, 0.15);
  
  /* Typography */
  --font-body: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  --font-mono: "SF Mono", Monaco, "Cascadia Code", "Roboto Mono", Consolas, "Courier New", monospace;
}

/* Typography Scale */
h1, h2, h3, h4, h5, h6 {
  font-weight: 700;
  line-height: 1.3;
  color: var(--color-dark);
  margin-bottom: 1rem;
}

h1 { font-size: 2.5rem; }
h2 { font-size: 2rem; }
h3 { font-size: 1.5rem; }
h4 { font-size: 1.25rem; }
h5 { font-size: 1.125rem; }
h6 { font-size: 1rem; }

@media (min-width: 768px) {
  h1 { font-size: 3rem; }
  h2 { font-size: 2.5rem; }
  h3 { font-size: 1.75rem; }
}

p {
  margin-bottom: 1rem;
  line-height: 1.7;
}

.lead {
  font-size: 1.125rem;
  font-weight: 400;
  line-height: 1.7;
  color: var(--color-neutral);
}

.text-muted-strong {
  color: var(--color-neutral);
}

/* Utility Classes */
.eyebrow {
  font-size: 0.875rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--color-accent);
  margin-bottom: 0.75rem;
  display: block;
}

.section-title {
  margin-bottom: 1rem;
}

.section-subtitle {
  max-width: 700px;
  margin: 0 auto 3rem;
}

/* Sections */
section {
  padding: var(--spacing-lg) 0;
}

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

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

/* Cards */
.card {
  background: var(--color-white);
  border-radius: var(--radius-lg);
  border: 1px solid var(--color-border);
  padding: var(--spacing-md);
  transition: all 0.3s ease;
  height: 100%;
}

.card:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-hover);
  border-color: var(--color-border-medium);
}

.card-icon {
  width: 48px;
  height: 48px;
  background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-accent) 100%);
  border-radius: var(--radius-md);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 1rem;
  font-size: 1.5rem;
}

.card-title {
  font-size: 1.25rem;
  font-weight: 600;
  margin-bottom: 0.5rem;
  color: var(--color-dark);
}

.card-text {
  color: var(--color-neutral);
  line-height: 1.6;
  margin: 0;
}

/* Pricing Cards */
.pricing-card {
  background: var(--color-white);
  border-radius: var(--radius-lg);
  border: 2px solid var(--color-border);
  padding: var(--spacing-md);
  text-align: center;
  position: relative;
  transition: all 0.3s ease;
  height: 100%;
  display: flex;
  flex-direction: column;
}

.pricing-card.popular {
  border-color: var(--color-primary);
  box-shadow: var(--shadow-lg);
  transform: scale(1.05);
}

.pricing-card.popular::before {
  content: attr(data-badge);
  position: absolute;
  top: -12px;
  left: 50%;
  transform: translateX(-50%);
  background: var(--color-primary);
  color: white;
  padding: 4px 16px;
  border-radius: 20px;
  font-size: 0.875rem;
  font-weight: 600;
}

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

.pricing-header {
  margin-bottom: 1.5rem;
}

.pricing-name {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--color-primary);
  margin-bottom: 0.5rem;
}

.pricing-price {
  font-size: 3rem;
  font-weight: 700;
  color: var(--color-dark);
  line-height: 1;
}

.pricing-price-currency {
  font-size: 1.5rem;
  vertical-align: super;
}

.pricing-period {
  font-size: 1rem;
  color: var(--color-neutral);
}

.pricing-description {
  color: var(--color-neutral);
  margin-bottom: 1.5rem;
}

.pricing-features {
  list-style: none;
  padding: 0;
  margin: 0 0 2rem;
  text-align: left;
  flex-grow: 1;
}

.pricing-features li {
  padding: 0.5rem 0;
  position: relative;
  padding-left: 2rem;
}

.pricing-features li::before {
  content: '✓';
  position: absolute;
  left: 0;
  color: var(--color-accent);
  font-weight: 700;
  font-size: 1.25rem;
}

/* Pricing Toggle */
.pricing-toggle {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 1rem;
  margin-bottom: 3rem;
}

.pricing-toggle-btn {
  background: transparent;
  border: 2px solid var(--color-border);
  padding: 0.75rem 2rem;
  border-radius: 50px;
  font-weight: 600;
  color: var(--color-neutral);
  cursor: pointer;
  transition: all 0.3s ease;
}

.pricing-toggle-btn.active {
  background: var(--color-primary);
  color: white;
  border-color: var(--color-primary);
}

.pricing-toggle-badge {
  background: var(--color-accent);
  color: var(--color-dark);
  padding: 4px 12px;
  border-radius: 20px;
  font-size: 0.875rem;
  font-weight: 600;
}

/* Testimonials */
.testimonial-card {
  background: var(--color-white);
  border-radius: var(--radius-lg);
  border: 1px solid var(--color-border);
  padding: var(--spacing-md);
  height: 100%;
}

.testimonial-quote {
  font-size: 1.125rem;
  line-height: 1.7;
  color: var(--color-dark);
  margin-bottom: 1.5rem;
  position: relative;
}

.testimonial-quote::before {
  content: '"';
  font-size: 4rem;
  color: var(--color-accent);
  opacity: 0.3;
  position: absolute;
  top: -20px;
  left: -10px;
  line-height: 1;
}

.testimonial-author {
  display: flex;
  align-items: center;
  gap: 1rem;
}

.testimonial-avatar {
  width: 48px;
  height: 48px;
  border-radius: 50%;
  background: var(--color-bg-light);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  color: var(--color-primary);
}

.testimonial-info h4 {
  font-size: 1rem;
  margin: 0 0 0.25rem;
}

.testimonial-role {
  font-size: 0.875rem;
  color: var(--color-neutral);
  margin: 0;
}

/* FAQ Accordion */
.faq-item {
  background: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  margin-bottom: 1rem;
  overflow: hidden;
}

.faq-question {
  width: 100%;
  text-align: left;
  background: transparent;
  border: none;
  padding: 1.5rem;
  font-size: 1.125rem;
  font-weight: 600;
  color: var(--color-dark);
  cursor: pointer;
  display: flex;
  justify-content: space-between;
  align-items: center;
  transition: all 0.2s ease;
}

.faq-question:hover {
  background: var(--color-bg-light);
}

.faq-question::after {
  content: '+';
  font-size: 1.5rem;
  color: var(--color-primary);
  transition: transform 0.3s ease;
}

.faq-question[aria-expanded="true"]::after {
  transform: rotate(45deg);
}

.faq-answer {
  padding: 0 1.5rem;
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.3s ease, padding 0.3s ease;
}

.faq-answer.open {
  padding: 0 1.5rem 1.5rem;
  max-height: 500px;
}

.faq-answer p {
  color: var(--color-neutral);
  line-height: 1.7;
  margin: 0;
}

/* Feature Grid */
.feature-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 2rem;
  margin: 3rem 0;
}

/* Footer */
footer {
  background: var(--color-dark);
  color: rgba(255, 255, 255, 0.8);
  padding: var(--spacing-lg) 0 var(--spacing-md);
}

.footer-brand {
  font-size: 1.5rem;
  font-weight: 700;
  color: white;
  margin-bottom: 0.5rem;
}

.footer-tagline {
  font-size: 0.875rem;
  opacity: 0.7;
  margin-bottom: 2rem;
}

.footer-column h5 {
  color: white;
  font-size: 1rem;
  font-weight: 600;
  margin-bottom: 1rem;
}

.footer-links {
  list-style: none;
  padding: 0;
  margin: 0;
}

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

.footer-links a {
  color: rgba(255, 255, 255, 0.8);
  text-decoration: none;
  transition: color 0.2s ease;
  font-size: 0.9375rem;
}

.footer-links a:hover,
.footer-links a:focus {
  color: var(--color-accent);
}

.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  margin-top: 3rem;
  padding-top: 2rem;
  font-size: 0.875rem;
  opacity: 0.7;
}

.social-links {
  display: flex;
  gap: 1rem;
}

.social-link {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.1);
  display: flex;
  align-items: center;
  justify-content: center;
  color: white;
  text-decoration: none;
  transition: all 0.2s ease;
}

.social-link:hover,
.social-link:focus {
  background: var(--color-accent);
  color: var(--color-dark);
}

/* Language Switcher */
.language-switcher {
  display: flex;
  gap: 0.5rem;
  align-items: center;
}

.language-switcher button {
  background: transparent;
  border: 1px solid var(--color-border);
  padding: 0.25rem 0.75rem;
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: all 0.2s ease;
  font-weight: 500;
  color: var(--color-neutral);
}

.language-switcher button.active {
  background: var(--color-primary);
  color: white;
  border-color: var(--color-primary);
}

.language-switcher button:hover,
.language-switcher button:focus {
  border-color: var(--color-primary);
}

/* Forms */
.form-group {
  margin-bottom: 1.5rem;
}

.form-label {
  display: block;
  font-weight: 600;
  margin-bottom: 0.5rem;
  color: var(--color-dark);
}

.form-control {
  width: 100%;
  padding: 0.75rem 1rem;
  border: 2px solid var(--color-border);
  border-radius: var(--radius-sm);
  font-size: 1rem;
  transition: all 0.2s ease;
  font-family: inherit;
}

.form-control:focus {
  outline: none;
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px rgba(32, 51, 104, 0.1);
}

.form-control.error {
  border-color: #dc3545;
}

.form-error {
  color: #dc3545;
  font-size: 0.875rem;
  margin-top: 0.5rem;
  display: none;
}

.form-error.visible {
  display: block;
}

textarea.form-control {
  min-height: 150px;
  resize: vertical;
}

.form-success {
  background: #d4edda;
  border: 1px solid #c3e6cb;
  color: #155724;
  padding: 1rem;
  border-radius: var(--radius-md);
  margin-bottom: 1.5rem;
}

/* Honeypot (hidden spam trap) */
.form-field-hp {
  position: absolute;
  left: -9999px;
  width: 1px;
  height: 1px;
  opacity: 0;
}

/* Feature Comparison Matrix */
.comparison-table {
  width: 100%;
  border-collapse: collapse;
  margin: 2rem 0;
  background: var(--color-white);
  border-radius: var(--radius-lg);
  overflow: hidden;
}

.comparison-table th,
.comparison-table td {
  padding: 1rem;
  text-align: center;
  border-bottom: 1px solid var(--color-border);
}

.comparison-table th {
  background: var(--color-bg-light);
  font-weight: 600;
  color: var(--color-dark);
}

.comparison-table td:first-child,
.comparison-table th:first-child {
  text-align: left;
  font-weight: 600;
}

.comparison-table .check {
  color: var(--color-accent);
  font-size: 1.5rem;
}

/* Animation Classes (with reduced-motion support) */
@media (prefers-reduced-motion: no-preference) {
  .fade-in {
    opacity: 0;
    transition: opacity 0.6s ease, transform 0.6s ease;
  }
  
  .fade-in.in-view {
    opacity: 1;
  }
  
  .slide-up {
    opacity: 0;
    transform: translateY(30px);
  }
  
  .slide-up.in-view {
    opacity: 1;
    transform: translateY(0);
  }
}

/* Loading State */
.loading {
  opacity: 0.6;
  pointer-events: none;
}

/* Badges */
.badge {
  display: inline-block;
  padding: 0.35em 0.65em;
  font-size: 0.875rem;
  font-weight: 600;
  line-height: 1;
  color: var(--color-dark);
  background: var(--color-accent);
  border-radius: 4px;
}

/* CTA Sections */
.cta-section {
  background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-dark) 100%);
  color: white;
  padding: var(--spacing-lg) 0;
  border-radius: var(--radius-lg);
  text-align: center;
}

.cta-section h2 {
  color: white;
  margin-bottom: 1rem;
}

.cta-section .lead {
  color: rgba(255, 255, 255, 0.9);
  margin-bottom: 2rem;
}

/* Responsive Utilities */
@media (max-width: 767px) {
  .hero h1 {
    font-size: 2rem;
  }
  
  section {
    padding: var(--spacing-md) 0;
  }
  
  .pricing-card.popular {
    transform: none;
  }
  
  .feature-grid {
    grid-template-columns: 1fr;
  }
}

/* Print Styles */
@media print {
  .navbar,
  footer,
  .cta-section,
  .btn {
    display: none;
  }
}