/* ============================================
   Reusable Components
   ============================================ */

/* === Navigation === */

.nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  padding: 14px 0;
  background: rgba(255, 255, 255, 0.6);
  backdrop-filter: blur(16px) saturate(1.4);
  -webkit-backdrop-filter: blur(16px) saturate(1.4);
  border-bottom: 1px solid rgba(226, 232, 240, 0.5);
  transition: all 0.4s var(--ease-reveal);
}

.nav.is-scrolled {
  background: rgba(255, 255, 255, 0.92);
  backdrop-filter: blur(20px) saturate(1.6);
  -webkit-backdrop-filter: blur(20px) saturate(1.6);
  border-bottom-color: var(--color-border);
  box-shadow: 0 1px 3px rgba(0, 0, 0, 0.04), 0 4px 20px rgba(2, 132, 199, 0.06);
  padding: 10px 0;
}

.nav-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 32px;
}

.nav-brand {
  display: flex;
  align-items: center;
  gap: 10px;
  font-family: var(--font-heading);
  font-weight: 600;
  font-size: 18px;
  letter-spacing: -0.01em;
  color: var(--color-text);
  min-height: 44px;
}

.nav-brand .brand-mark {
  width: 28px;
  height: 28px;
  color: var(--color-primary-600);
  transition: color 0.3s ease;
}

.nav-brand:hover .brand-mark {
  color: var(--color-primary-500);
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 28px;
}

.nav-links a {
  font-family: var(--font-body);
  font-size: var(--text-small);
  font-weight: 500;
  color: var(--color-text-secondary);
  transition: color var(--dur-hover) var(--ease-hover);
  padding: 12px 4px;
  min-height: 44px;
  display: inline-flex;
  align-items: center;
}

.nav-links a:hover {
  color: var(--color-primary-600);
}

.nav-links a.is-active {
  color: var(--color-primary-600);
}

.nav-cta {
  padding: 10px 20px !important;
}

/* Dropdown */
.nav-dropdown {
  position: relative;
}

.nav-dropdown-trigger {
  display: flex;
  align-items: center;
  gap: 4px;
  cursor: pointer;
  background: none;
  border: none;
  font-family: var(--font-body);
  font-size: var(--text-small);
  font-weight: 500;
  color: var(--color-text-secondary);
  transition: color var(--dur-hover) var(--ease-hover);
  padding: 12px 4px;
  min-height: 44px;
}

.nav-dropdown-trigger:hover {
  color: var(--color-primary-600);
}

.nav-dropdown-trigger svg {
  width: 14px;
  height: 14px;
  transition: transform 0.3s var(--ease-reveal);
}

.nav-dropdown:hover .nav-dropdown-trigger svg {
  transform: rotate(180deg);
}

.nav-dropdown-menu {
  position: absolute;
  top: 100%;
  left: 50%;
  transform: translateX(-50%);
  min-width: 280px;
  background: var(--color-white);
  border: 1px solid var(--color-border);
  border-radius: var(--card-radius);
  padding: 12px 8px;
  margin-top: 8px;
  box-shadow: var(--shadow-lg);
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.25s var(--ease-reveal),
              visibility 0.25s var(--ease-reveal);
  pointer-events: none;
}

.nav-dropdown:hover .nav-dropdown-menu {
  opacity: 1;
  visibility: visible;
  pointer-events: auto;
}

.nav-dropdown-item {
  display: block;
  padding: 10px 14px;
  border-radius: 8px;
  transition: background var(--dur-hover) var(--ease-hover);
}

.nav-dropdown-item:hover {
  background: var(--color-bg);
}

.nav-dropdown-item-name {
  display: block;
  font-family: var(--font-heading);
  font-size: var(--text-small);
  font-weight: 600;
  color: var(--color-text);
  transition: color var(--dur-hover) var(--ease-hover);
}

.nav-dropdown-item:hover .nav-dropdown-item-name,
.nav-dropdown-item.is-active .nav-dropdown-item-name {
  color: var(--color-primary-600);
}

.nav-dropdown-item-desc {
  display: block;
  font-size: var(--text-label);
  color: var(--color-text-muted);
  margin-top: 2px;
}

/* Mobile nav toggle */
.nav-toggle {
  display: none;
  background: none;
  border: none;
  color: var(--color-text);
  cursor: pointer;
  padding: 4px;
}

.nav-toggle svg {
  width: 24px;
  height: 24px;
}

@media (max-width: 768px) {
  .nav-links {
    display: none;
  }
  .nav-toggle {
    display: block;
  }
  .nav-links.is-open {
    display: flex;
    flex-direction: column;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background: rgba(255, 255, 255, 0.98);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border-bottom: 1px solid var(--color-border);
    padding: 24px var(--container-padding);
    gap: 8px;
    animation: menuSlideIn 0.3s var(--ease-reveal);
  }
  .nav-dropdown-menu {
    position: static;
    transform: none;
    opacity: 1;
    visibility: visible;
    border: none;
    padding: 0 0 0 16px;
    background: transparent;
    min-width: auto;
    pointer-events: auto;
    box-shadow: none;
    margin-top: 0;
  }
}


/* === Cards === */

.card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--card-radius);
  padding: var(--card-padding);
  box-shadow: var(--shadow-card);
  position: relative;
  transition: border-color var(--dur-hover) var(--ease-hover),
              box-shadow var(--dur-hover) var(--ease-hover),
              transform var(--dur-hover) var(--ease-hover);
}

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

.card-flat {
  box-shadow: none;
  border: 1px solid var(--color-border);
}

.card-flat:hover {
  border-color: var(--color-primary-500);
  box-shadow: var(--shadow-md);
}


/* === Buttons === */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 14px 28px;
  border-radius: var(--btn-radius);
  font-family: var(--font-heading);
  font-weight: 600;
  font-size: var(--text-small);
  text-decoration: none;
  cursor: pointer;
  border: none;
  transition: all var(--dur-hover) var(--ease-hover);
  white-space: nowrap;
  position: relative;
}

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

.btn-primary {
  background: var(--color-primary-600);
  color: var(--color-text-inverse);
  box-shadow: 0 1px 3px rgba(2, 132, 199, 0.3);
}

.btn-primary:hover {
  background: var(--color-primary-700);
  box-shadow: 0 4px 12px rgba(2, 132, 199, 0.25);
  transform: translateY(-1px);
}

.btn-secondary {
  background: var(--color-white);
  color: var(--color-primary-600);
  border: 1px solid var(--color-primary-500);
}

.btn-secondary:hover {
  background: var(--color-primary-50);
  border-color: var(--color-primary-600);
}

.btn-accent {
  background: var(--color-accent-500);
  color: var(--color-white);
}

.btn-accent:hover {
  background: var(--color-accent-600);
  transform: translateY(-1px);
}

.btn-ghost {
  background: transparent;
  color: var(--color-text-secondary);
  border: 1px solid var(--color-border);
}

.btn-ghost:hover {
  border-color: var(--color-border-hover);
  background: var(--color-bg);
}

.btn-lg {
  padding: 16px 36px;
  font-size: var(--text-body);
}

.btn-group {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
}

@media (max-width: 480px) {
  .btn-group {
    flex-direction: column;
  }
  .btn-group .btn {
    width: 100%;
  }
}


/* === Section Header === */

.section-label {
  display: block;
  width: 40px;
  height: 3px;
  background: var(--color-primary-500);
  margin-bottom: 16px;
  border-radius: 2px;
}

.section-tag {
  display: block;
  font-family: var(--font-heading);
  font-size: var(--text-label);
  font-weight: 600;
  color: var(--color-primary-600);
  text-transform: uppercase;
  letter-spacing: 0.1em;
  margin-bottom: 12px;
}


/* === Trust Badges === */

.trust-badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 8px 16px;
  background: var(--color-green-50);
  color: var(--color-green);
  border: 1px solid var(--color-green-light);
  border-radius: 100px;
  font-size: var(--text-small);
  font-weight: 500;
}

.trust-badge-sm {
  padding: 4px 12px;
  font-size: var(--text-label);
}

.trust-badge-primary {
  background: var(--color-primary-50);
  color: var(--color-primary-600);
  border-color: var(--color-primary-100);
}


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

.section-footer-cta {
  text-align: center;
  background: linear-gradient(135deg, var(--color-primary-50) 0%, var(--color-white) 50%, var(--color-primary-50) 100%);
  background-size: 200% 200%;
  animation: gradient-shift 8s ease infinite;
  position: relative;
  overflow: hidden;
}

.section-footer-cta > .container {
  position: relative;
  z-index: 1;
}

.section-footer-cta h2 {
  margin-bottom: 16px;
}

.cta-body {
  font-size: var(--text-body-lg);
  color: var(--color-text-secondary);
  max-width: 560px;
  margin: 0 auto 32px;
  line-height: 1.7;
}

.section-footer-cta .btn-group {
  justify-content: center;
}


/* === Footer === */

.footer {
  padding: 40px 0 32px;
  background: var(--color-bg);
  border-top: 1px solid var(--color-border);
}

.footer-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 16px;
  padding-bottom: 16px;
  border-bottom: 1px solid var(--color-border);
}

.footer-brand {
  display: flex;
  align-items: center;
  gap: 12px;
}

.footer-brand .brand-mark {
  width: 18px;
  height: 18px;
  color: var(--color-primary-600);
}

.footer-copy {
  font-size: var(--text-small);
  color: var(--color-text-muted);
}

.footer-links {
  display: flex;
  gap: 20px;
  flex-wrap: wrap;
}

.footer-links a {
  font-size: var(--text-small);
  color: var(--color-text-muted);
  transition: color var(--dur-hover) var(--ease-hover);
  padding: 4px 0;
}

.footer-links a:hover {
  color: var(--color-primary-600);
}

.footer-meta {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-top: 16px;
  gap: 12px;
}

.footer-badges {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
}

.footer-updated {
  font-size: 11px;
  color: var(--color-text-muted);
  opacity: 0.5;
  font-family: var(--font-mono);
}

@media (max-width: 768px) {
  .footer-inner {
    flex-direction: column;
    text-align: center;
    gap: 12px;
  }
  .footer-brand {
    flex-direction: column;
    gap: 8px;
  }
  .footer-links {
    justify-content: center;
  }
  .footer-links a {
    padding: 8px 4px;
    min-height: 44px;
    display: inline-flex;
    align-items: center;
  }
  .footer-meta {
    flex-direction: column;
    text-align: center;
  }
  .footer-badges {
    justify-content: center;
  }
}


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

.faq-list {
  max-width: 720px;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.faq-item {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--card-radius);
  padding: 20px 24px;
  cursor: pointer;
  transition: border-color var(--dur-hover) var(--ease-hover);
}

.faq-item:hover {
  border-color: var(--color-border-hover);
}

.faq-item[open] {
  border-color: var(--color-primary-500);
}

.faq-question {
  font-family: var(--font-heading);
  font-size: var(--text-body);
  font-weight: 600;
  color: var(--color-text);
  list-style: none;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
}

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

.faq-question::after {
  content: '+';
  font-size: 20px;
  color: var(--color-primary-500);
  flex-shrink: 0;
  transition: transform var(--dur-hover) var(--ease-hover);
}

.faq-item[open] .faq-question::after {
  content: '\2212';
}

.faq-answer {
  padding-top: 12px;
}

.faq-answer p {
  font-size: var(--text-small);
  color: var(--color-text-secondary);
  line-height: 1.7;
}