/* NIS2 Shield Hybrid — Website Styles */

:root {
  --shield-navy: #0B1F3A;
  --compliance-blue: #1E5A8C;
  --signal-teal: #0D9488;
  --slate-gray: #64748B;
  --cloud-white: #F8FAFC;
  --pure-white: #FFFFFF;
  --alert-amber: #D97706;
  --critical-red: #DC2626;
  --success-green: #059669;
  --accent-gold: #B8860B;
  --text-dark: #334155;
  --border: #E2E8F0;
  --shadow: 0 4px 6px -1px rgba(11, 31, 58, 0.08), 0 2px 4px -2px rgba(11, 31, 58, 0.06);
  --shadow-lg: 0 10px 25px -5px rgba(11, 31, 58, 0.12);
  --radius: 8px;
  --radius-lg: 12px;
  --transition: 0.25s ease;
  --font-sans: 'Inter', 'Source Sans 3', -apple-system, BlinkMacSystemFont, 'Segoe UI', Arial, sans-serif;
}

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

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: 1.6;
  color: var(--text-dark);
  background: var(--cloud-white);
  min-height: 100vh;
}

/* Header */
.site-header {
  background: linear-gradient(135deg, var(--shield-navy) 0%, var(--compliance-blue) 100%);
  color: var(--pure-white);
  padding: 1rem 0;
  position: sticky;
  top: 0;
  z-index: 100;
  box-shadow: var(--shadow-lg);
}

.header-inner {
  max-width: 1100px;
  margin: 0 auto;
  padding: 0 1.5rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1.5rem;
}

.logo {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  text-decoration: none;
  color: inherit;
}

.logo-icon {
  width: 40px;
  height: 40px;
  background: var(--signal-teal);
  border-radius: var(--radius);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.25rem;
}

.logo-text {
  font-weight: 700;
  font-size: 1.125rem;
  letter-spacing: -0.02em;
}

.logo-text span {
  color: var(--signal-teal);
}

.nav-links {
  display: flex;
  gap: 1.5rem;
  list-style: none;
}

.nav-links a {
  color: rgba(255, 255, 255, 0.85);
  text-decoration: none;
  font-size: 0.9375rem;
  font-weight: 500;
  transition: color var(--transition);
}

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

.nav-links a.active {
  border-bottom: 2px solid var(--signal-teal);
  padding-bottom: 2px;
}

/* Hero */
.hero {
  background: linear-gradient(135deg, var(--shield-navy) 0%, #153a5c 50%, var(--compliance-blue) 100%);
  color: var(--pure-white);
  padding: 4rem 1.5rem 3.5rem;
  text-align: center;
}

.hero-inner {
  max-width: 720px;
  margin: 0 auto;
}

.hero-tagline {
  display: inline-block;
  background: rgba(13, 148, 136, 0.2);
  color: var(--signal-teal);
  font-size: 0.8125rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  padding: 0.375rem 0.875rem;
  border-radius: 999px;
  margin-bottom: 1.25rem;
  border: 1px solid rgba(13, 148, 136, 0.3);
}

.hero h1 {
  font-size: clamp(1.75rem, 4vw, 2.5rem);
  font-weight: 700;
  line-height: 1.2;
  margin-bottom: 1rem;
  letter-spacing: -0.02em;
}

.hero p {
  font-size: 1.125rem;
  opacity: 0.9;
  max-width: 560px;
  margin: 0 auto 2rem;
}

/* Search */
.search-box {
  max-width: 480px;
  margin: 0 auto;
  position: relative;
}

.search-box input {
  width: 100%;
  padding: 0.875rem 1rem 0.875rem 2.75rem;
  border: none;
  border-radius: var(--radius-lg);
  font-size: 1rem;
  font-family: inherit;
  background: var(--pure-white);
  color: var(--text-dark);
  box-shadow: var(--shadow-lg);
}

.search-box input:focus {
  outline: 2px solid var(--signal-teal);
  outline-offset: 2px;
}

.search-box input::placeholder {
  color: var(--slate-gray);
}

.search-icon {
  position: absolute;
  left: 1rem;
  top: 50%;
  transform: translateY(-50%);
  color: var(--slate-gray);
  pointer-events: none;
}

/* Main content */
.main-content {
  max-width: 1100px;
  margin: 0 auto;
  padding: 3rem 1.5rem 4rem;
}

/* Category tabs */
.category-nav {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-bottom: 2rem;
  padding-bottom: 1.5rem;
  border-bottom: 1px solid var(--border);
}

.category-btn {
  padding: 0.5rem 1rem;
  border: 1px solid var(--border);
  border-radius: 999px;
  background: var(--pure-white);
  color: var(--text-dark);
  font-size: 0.875rem;
  font-weight: 500;
  cursor: pointer;
  transition: all var(--transition);
  font-family: inherit;
}

.category-btn:hover {
  border-color: var(--compliance-blue);
  color: var(--compliance-blue);
}

.category-btn.active {
  background: var(--compliance-blue);
  border-color: var(--compliance-blue);
  color: var(--pure-white);
}

/* FAQ sections */
.faq-section {
  margin-bottom: 2.5rem;
}

.faq-section.hidden {
  display: none;
}

.section-header {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  margin-bottom: 1.25rem;
}

.section-icon {
  width: 36px;
  height: 36px;
  background: rgba(30, 90, 140, 0.1);
  color: var(--compliance-blue);
  border-radius: var(--radius);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.125rem;
}

.section-header h2 {
  font-size: 1.375rem;
  font-weight: 700;
  color: var(--shield-navy);
}

.section-count {
  font-size: 0.8125rem;
  color: var(--slate-gray);
  font-weight: 400;
}

/* Accordion */
.accordion {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.accordion-item {
  background: var(--pure-white);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  transition: box-shadow var(--transition), border-color var(--transition);
}

.accordion-item:hover {
  border-color: rgba(30, 90, 140, 0.3);
  box-shadow: var(--shadow);
}

.accordion-item.open {
  border-color: var(--compliance-blue);
  box-shadow: var(--shadow);
}

.accordion-item.hidden-by-search {
  display: none;
}

.accordion-trigger {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 1.125rem 1.25rem;
  background: none;
  border: none;
  cursor: pointer;
  text-align: left;
  font-family: inherit;
  font-size: 1rem;
  font-weight: 600;
  color: var(--shield-navy);
  transition: color var(--transition);
}

.accordion-trigger:hover {
  color: var(--compliance-blue);
}

.accordion-trigger .question-text {
  flex: 1;
}

.accordion-icon {
  flex-shrink: 0;
  width: 28px;
  height: 28px;
  border-radius: 50%;
  background: var(--cloud-white);
  display: flex;
  align-items: center;
  justify-content: center;
  transition: transform var(--transition), background var(--transition);
  color: var(--compliance-blue);
  font-size: 1.25rem;
  line-height: 1;
}

.accordion-item.open .accordion-icon {
  transform: rotate(45deg);
  background: var(--compliance-blue);
  color: var(--pure-white);
}

.accordion-panel {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.35s ease;
}

.accordion-item.open .accordion-panel {
  max-height: 600px;
}

.accordion-content {
  padding: 0 1.25rem 1.25rem;
  color: var(--text-dark);
  font-size: 0.9375rem;
  line-height: 1.7;
}

.accordion-content p {
  margin-bottom: 0.75rem;
}

.accordion-content p:last-child {
  margin-bottom: 0;
}

.accordion-content ul {
  margin: 0.5rem 0 0.75rem 1.25rem;
}

.accordion-content li {
  margin-bottom: 0.375rem;
}

.accordion-content strong {
  color: var(--shield-navy);
}

.accordion-content table {
  width: 100%;
  border-collapse: collapse;
  margin: 0.75rem 0;
  font-size: 0.875rem;
}

.accordion-content th,
.accordion-content td {
  padding: 0.5rem 0.75rem;
  border: 1px solid var(--border);
  text-align: left;
}

.accordion-content th {
  background: var(--cloud-white);
  font-weight: 600;
  color: var(--shield-navy);
}

/* CTA */
.cta-section {
  background: linear-gradient(135deg, var(--shield-navy), var(--compliance-blue));
  border-radius: var(--radius-lg);
  padding: 2.5rem 2rem;
  text-align: center;
  color: var(--pure-white);
  margin-top: 3rem;
}

.cta-section h2 {
  font-size: 1.5rem;
  margin-bottom: 0.75rem;
}

.cta-section p {
  opacity: 0.9;
  margin-bottom: 1.5rem;
  max-width: 480px;
  margin-left: auto;
  margin-right: auto;
}

.cta-buttons {
  display: flex;
  gap: 1rem;
  justify-content: center;
  flex-wrap: wrap;
}

.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.75rem 1.5rem;
  border-radius: var(--radius);
  font-size: 0.9375rem;
  font-weight: 600;
  text-decoration: none;
  transition: all var(--transition);
  font-family: inherit;
  cursor: pointer;
  border: none;
}

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

.btn-primary:hover {
  background: #0b7a70;
  transform: translateY(-1px);
}

.btn-secondary {
  background: transparent;
  color: var(--pure-white);
  border: 2px solid rgba(255, 255, 255, 0.4);
}

.btn-secondary:hover {
  border-color: var(--pure-white);
  background: rgba(255, 255, 255, 0.1);
}

/* No results */
.no-results {
  text-align: center;
  padding: 3rem 1rem;
  color: var(--slate-gray);
  display: none;
}

.no-results.visible {
  display: block;
}

.no-results h3 {
  color: var(--shield-navy);
  margin-bottom: 0.5rem;
}

/* Footer */
.site-footer {
  background: var(--shield-navy);
  color: rgba(255, 255, 255, 0.7);
  padding: 2rem 1.5rem;
  text-align: center;
  font-size: 0.875rem;
}

.site-footer a {
  color: var(--signal-teal);
  text-decoration: none;
}

.site-footer a:hover {
  text-decoration: underline;
}

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

  .hero {
    padding: 3rem 1rem 2.5rem;
  }

  .category-nav {
    overflow-x: auto;
    flex-wrap: nowrap;
    padding-bottom: 1rem;
    -webkit-overflow-scrolling: touch;
  }

  .category-btn {
    white-space: nowrap;
    flex-shrink: 0;
  }

  .accordion-trigger {
    font-size: 0.9375rem;
    padding: 1rem;
  }

  .cta-section {
    padding: 2rem 1.25rem;
  }
}