/* ==========================================================================
   ShieldComms Landing Design System
   ==========================================================================
   Shared stylesheet for all landing pages. Defines design tokens (colors,
   typography, spacing), component styles (nav, footer, buttons, cards),
   and responsive breakpoints.

   Font dependencies (loaded via <link> tags in HTML, not in CSS):
   - Fraunces (Google Fonts): display/heading typeface
   - Satoshi (CDNFonts): body/UI typeface
   ========================================================================== */

/* ==========================================================================
   Section 1: Reset and Base
   ========================================================================== */

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

html {
  scroll-behavior: smooth;
  scroll-padding-top: 80px;
}

body {
  margin: 0;
  padding: 0;
  font-family: 'Satoshi', -apple-system, 'Segoe UI', sans-serif;
  font-size: 16px;
  font-weight: 450;
  line-height: 1.7;
  color: var(--color-slate-700);
  background: var(--color-slate-50);
  overflow-x: hidden;
  overflow-wrap: break-word;
  word-wrap: break-word;
}

img {
  max-width: 100%;
  height: auto;
}

/* ==========================================================================
   Section 2: CSS Custom Properties
   ========================================================================== */

:root {
  /* Colors */
  --color-indigo: #6366f1;
  --color-indigo-hover: #4f46e5;
  --color-indigo-light: #eef2ff;
  --color-slate-900: #0f172a;
  --color-slate-800: #1e293b;
  --color-slate-700: #334155;
  --color-slate-600: #475569;
  --color-slate-200: #e2e8f0;
  --color-slate-50: #f8fafc;
  --color-white: #ffffff;

  /* Typography */
  --font-display: 'Fraunces', Georgia, 'Times New Roman', serif;
  --font-body: 'Satoshi', -apple-system, 'Segoe UI', sans-serif;

  /* Borders and radius */
  --radius-card: 12px;
  --radius-button: 8px;
  --border-heavy: 2px solid var(--color-slate-800);
  --border-subtle: 1px solid var(--color-slate-200);
}

/* ==========================================================================
   Section 3: Typography
   ========================================================================== */

h1 {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 42px;
  color: var(--color-slate-900);
  letter-spacing: -0.02em;
  line-height: 1.2;
  font-optical-sizing: auto;
}

h2 {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 28px;
  color: var(--color-slate-900);
  line-height: 1.3;
}

h3 {
  font-family: var(--font-body);
  font-weight: 700;
  font-size: 18px;
  color: var(--color-slate-900);
  line-height: 1.4;
}

h4 {
  font-family: var(--font-body);
  font-weight: 700;
  font-size: 16px;
  color: var(--color-slate-900);
}

p {
  margin-bottom: 1rem;
}

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

a:hover {
  text-decoration: underline;
}

.text-small {
  font-size: 12px;
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.text-indigo {
  color: var(--color-indigo);
}

/* ==========================================================================
   Section 4: Layout Utilities
   ========================================================================== */

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 2rem;
}

.section {
  padding: 5rem 0;
}

.section-header {
  text-align: center;
  margin-bottom: 3rem;
}

.grid-3 {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 2rem;
}

.grid-2 {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 2rem;
}

.grid-2 > *,
.grid-3 > * {
  min-width: 0;
}

/* ==========================================================================
   Section 5: Buttons
   ========================================================================== */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-body);
  font-weight: 600;
  font-size: 15px;
  padding: 12px 28px;
  border-radius: var(--radius-button);
  border: 2px solid transparent;
  cursor: pointer;
  text-decoration: none;
  transition: background 0.2s ease, color 0.2s ease, border-color 0.2s ease;
}

.btn:hover {
  text-decoration: none;
}

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

.btn-primary:hover {
  background: var(--color-indigo-hover);
  border-color: var(--color-indigo-hover);
}

.btn-outline {
  background: transparent;
  border-color: var(--color-slate-800);
  color: var(--color-slate-800);
}

.btn-outline:hover {
  background: var(--color-slate-800);
  color: var(--color-white);
}

.btn-ghost {
  background: transparent;
  border-color: transparent;
  color: var(--color-indigo);
}

.btn-ghost:hover {
  background: var(--color-indigo-light);
}

/* ==========================================================================
   Section 6: Cards
   ========================================================================== */

.card {
  background: var(--color-white);
  border: var(--border-heavy);
  border-radius: var(--radius-card);
  padding: 24px;
  overflow: hidden;
}

.card-icon {
  width: 40px;
  height: 40px;
  background: var(--color-indigo-light);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 20px;
  margin-bottom: 16px;
}

.card-muted {
  background: var(--color-white);
  border: 2px dashed var(--color-slate-800);
  border-radius: var(--radius-card);
  padding: 24px;
  opacity: 0.85;
  overflow: hidden;
}

/* ==========================================================================
   Section 7: Navigation
   ========================================================================== */

.nav {
  position: relative;
  background: rgba(255, 255, 255, 0.98);
  border-bottom: 2px solid var(--color-slate-200);
  z-index: 1000;
  width: 100%;
}

.nav::after {
  content: '';
  position: absolute;
  bottom: -2px;
  left: 0;
  width: 120px;
  height: 2px;
  background: var(--color-indigo);
}

.nav--fixed {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
}

.nav--fixed ~ main,
.nav--fixed ~ .hero,
.nav--fixed + * {
  padding-top: 80px;
}

.nav-container {
  max-width: 1400px;
  margin: 0 auto;
  padding: 1.2rem 2rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.nav-logo {
  display: flex;
  align-items: center;
  gap: 8px;
  text-decoration: none;
}

.nav-logo:hover {
  text-decoration: none;
}

.nav-logo-icon {
  width: 28px;
  height: 28px;
}

.logo {
  font-family: var(--font-display);
  font-size: 20px;
  font-weight: 700;
  color: var(--color-slate-900);
  letter-spacing: -0.5px;
}

.logo-accent {
  color: var(--color-indigo);
}

.nav-links {
  display: flex;
  gap: 2rem;
  align-items: center;
}

.nav-links a {
  color: var(--color-slate-600);
  text-decoration: none;
  font-size: 14px;
  font-weight: 500;
}

.nav-links a:hover {
  color: var(--color-slate-900);
  text-decoration: none;
}

.nav-links .btn {
  font-size: 14px;
}

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

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

.nav-links .btn-ghost {
  color: var(--color-indigo);
}

.nav-links .btn-outline {
  color: var(--color-slate-800);
}

.nav-links .btn-outline:hover {
  color: var(--color-white);
}

.nav-hamburger {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  padding: 8px;
  flex-direction: column;
  gap: 5px;
}

.nav-hamburger span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--color-slate-800);
  transition: transform 0.3s ease, opacity 0.3s ease;
}

.nav-hamburger--open span:nth-child(1) {
  transform: rotate(45deg) translate(5px, 5px);
}

.nav-hamburger--open span:nth-child(2) {
  opacity: 0;
}

.nav-hamburger--open span:nth-child(3) {
  transform: rotate(-45deg) translate(5px, -5px);
}

/* ==========================================================================
   Section 8: Footer
   ========================================================================== */

.footer {
  background: var(--color-slate-900);
  color: var(--color-slate-200);
  padding: 4rem 0 2rem;
}

.footer-container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 2rem;
  display: grid;
  grid-template-columns: 2fr repeat(4, 1fr);
  gap: 3rem;
  overflow: hidden;
}

.footer-brand p {
  color: var(--color-slate-200);
  font-size: 14px;
  margin-top: 1rem;
  line-height: 1.6;
}

.footer .nav-logo:hover {
  text-decoration: none;
}

.footer .logo {
  color: var(--color-white);
}

.footer-links h4 {
  color: var(--color-white);
  font-size: 14px;
  font-weight: 700;
  margin-bottom: 1rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

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

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

.footer-links a {
  color: var(--color-slate-200);
  text-decoration: none;
  font-size: 14px;
}

.footer-links a:hover {
  color: var(--color-white);
  text-decoration: none;
}

.footer-bottom {
  max-width: 1200px;
  margin: 2rem auto 0;
  padding: 2rem 2rem 0;
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  text-align: center;
  font-size: 13px;
  color: var(--color-slate-200);
}

/* ==========================================================================
   Section 9: Responsive Breakpoints
   ========================================================================== */

@media (max-width: 1200px) {
  h1 {
    font-size: 36px;
  }

  h2 {
    font-size: 24px;
  }
}

@media (max-width: 1024px) {
  .grid-3 {
    grid-template-columns: repeat(2, 1fr);
  }

  .footer-container {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 768px) {
  .grid-3,
  .grid-2 {
    grid-template-columns: 1fr;
  }

  .nav-links {
    display: none;
  }

  .nav-links--open {
    display: flex;
    flex-direction: column;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background: var(--color-white);
    padding: 1rem 2rem;
    border-bottom: var(--border-subtle);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
  }

  .nav-hamburger {
    display: flex;
  }

  .footer-container {
    grid-template-columns: 1fr;
  }

  .container {
    padding: 0 1.5rem;
  }

  h1 {
    font-size: 30px;
  }

  .section {
    padding: 3rem 0;
  }

  /* Mobile nav: adequate touch targets */
  .nav-links--open a {
    padding: 0.75rem 0;
    font-size: 16px;
  }

  .nav-links--open .btn {
    width: 100%;
    text-align: center;
    margin-top: 0.25rem;
  }

  /* Hero buttons: stack and center */
  .hero .container > div:last-child {
    flex-direction: column;
    align-items: center;
    gap: 0.75rem;
  }

  /* Comparison tables: horizontal scroll when too wide */
  .comparison-table {
    display: block;
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
  }

  /* Article CTA: reduce padding */
  .article-cta {
    padding: 2rem 1.5rem;
  }

  /* Boxes: reduce horizontal padding */
  .highlight-box,
  .story-box {
    padding: 1.25rem 1.5rem;
  }
}

@media (max-width: 480px) {
  h1 {
    font-size: 26px;
  }

  h2 {
    font-size: 20px;
  }

  .btn {
    padding: 10px 20px;
    font-size: 14px;
  }

  .container {
    padding: 0 1rem;
  }

  /* Hero: reduce padding */
  .hero {
    padding: 3rem 1rem 2.5rem;
  }

  .hero p {
    font-size: 16px;
  }

  /* Hero buttons: full width on small screens */
  .hero .btn {
    width: 100%;
  }

  /* Boxes: tighter padding on small screens */
  .highlight-box,
  .story-box,
  .mistake-box,
  .solution-box {
    padding: 1.25rem;
  }

  .article-cta {
    padding: 1.5rem 1.25rem;
  }
}

/* ==========================================================================
   Section 10: Page-Specific Utilities
   ========================================================================== */

.hero {
  text-align: center;
  padding: 6rem 2rem 4rem;
}

.hero p {
  font-size: 18px;
  max-width: 640px;
  margin: 0 auto 2rem;
}

.hero .container > div:last-child {
  display: flex;
  justify-content: center;
  gap: 1rem;
  flex-wrap: wrap;
}

.hero .btn + .btn {
  margin-left: 0;
}

.badge {
  display: inline-block;
  font-size: 11px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  padding: 4px 10px;
  border-radius: 20px;
}

.badge-beta {
  background: var(--color-indigo-light);
  color: var(--color-indigo);
}

/* ==========================================================================
   Section 10b: FAQ Details/Summary
   ========================================================================== */

details {
  border-bottom: var(--border-subtle);
}

details summary {
  cursor: pointer;
  padding: 1rem 0;
  font-size: 16px;
  line-height: 1.5;
  -webkit-tap-highlight-color: transparent;
}

details[open] summary {
  padding-bottom: 0.5rem;
}

details p {
  padding: 0 0 1rem 0.25rem;
  margin: 0;
  color: var(--color-slate-600);
}

/* ==========================================================================
   Section 11: Legal Pages
   ========================================================================== */

.legal-content {
  max-width: 780px;
  margin: 0 auto;
  padding: 2rem 0 4rem;
}

.legal-content h1 {
  margin-bottom: 0.5rem;
}

.legal-content h2 {
  margin-top: 3rem;
  margin-bottom: 1rem;
  padding-bottom: 0.5rem;
  border-bottom: var(--border-subtle);
}

.legal-content h3 {
  margin-top: 1.5rem;
  margin-bottom: 0.75rem;
}

.legal-content p {
  margin-bottom: 1rem;
}

.legal-content ul,
.legal-content ol {
  margin-left: 1.5rem;
  margin-bottom: 1rem;
}

.legal-content li {
  margin-bottom: 0.5rem;
}

.legal-content dl {
  margin: 1.5rem 0;
}

.legal-content dt {
  font-weight: 700;
  color: var(--color-slate-900);
  margin-top: 1rem;
}

.legal-content dd {
  margin-left: 1.5rem;
  margin-bottom: 0.5rem;
}

.legal-updated {
  color: var(--color-slate-600);
  font-size: 14px;
  font-weight: 500;
  margin-bottom: 2rem;
}

.legal-intro {
  font-size: 16px;
  color: var(--color-slate-600);
  margin-bottom: 2rem;
  line-height: 1.7;
}

.breadcrumb {
  font-family: var(--font-body);
  font-weight: 500;
  font-size: 14px;
  color: var(--color-slate-600);
  padding: 1.5rem 0 0;
}

.breadcrumb a {
  color: var(--color-slate-600);
  text-decoration: none;
}

.breadcrumb a:hover {
  color: var(--color-indigo);
}

.breadcrumb-sep {
  margin: 0 0.5rem;
}

.legal-toc {
  background: var(--color-slate-50);
  border: var(--border-subtle);
  border-radius: var(--radius-card);
  padding: 1.5rem 2rem;
  margin-bottom: 2rem;
}

.legal-toc h3 {
  margin-top: 0;
  margin-bottom: 0.75rem;
}

.legal-toc ol {
  margin: 0;
  padding-left: 1.25rem;
}

.legal-toc li {
  margin-bottom: 0.25rem;
}

.legal-toc a {
  font-size: 14px;
  text-decoration: none;
}

/* ==========================================================================
   Section 12: Article Components
   ========================================================================== */

.article {
  max-width: 900px;
  margin: 0 auto;
  padding: 2rem 1.5rem;
  overflow: hidden;
}

.article-meta {
  font-size: 0.875rem;
  color: var(--color-slate-600);
  margin-bottom: 2rem;
  display: flex;
  align-items: center;
  gap: 0.5rem;
  flex-wrap: wrap;
}

.breadcrumb-separator {
  margin: 0 0.5rem;
}

.highlight-box {
  background: var(--color-indigo-light);
  border-left: 4px solid var(--color-indigo);
  padding: 1.5rem 2rem;
  margin: 2rem 0;
  border-radius: var(--radius-button);
  overflow: hidden;
}

.highlight-box p {
  margin: 0;
  font-weight: 600;
  color: var(--color-slate-900);
}

.article-cta {
  background: var(--color-indigo);
  color: var(--color-white);
  padding: 3rem;
  border-radius: var(--radius-card);
  text-align: center;
  margin: 3rem 0;
}

.article-cta h3 {
  color: var(--color-white);
  margin-bottom: 1rem;
}

.article-cta p {
  color: rgba(255, 255, 255, 0.9);
  margin-bottom: 1.5rem;
}

.article-cta-actions {
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 1rem;
}

.article-cta .btn-primary {
  background: var(--color-white);
  color: var(--color-indigo);
  border-color: var(--color-white);
}

.article-cta .btn-primary:hover {
  background: var(--color-slate-50);
  border-color: var(--color-slate-50);
}

.article-cta .btn-outline {
  border-color: var(--color-white);
  color: var(--color-white);
}

.article-cta .btn-outline:hover {
  background: rgba(255, 255, 255, 0.15);
  color: var(--color-white);
}

.article-cta-signin {
  font-size: 0.875rem;
  margin-top: 1rem;
  color: rgba(255, 255, 255, 0.7);
}

.article-cta-signin a {
  color: var(--color-white);
  text-decoration: underline;
}

.comparison-table {
  width: 100%;
  border-collapse: collapse;
  margin: 2rem 0;
}

.comparison-table th {
  background: var(--color-slate-900);
  color: var(--color-white);
  padding: 0.75rem 1rem;
  text-align: left;
  font-weight: 600;
}

.comparison-table td {
  padding: 0.75rem 1rem;
  border-bottom: var(--border-subtle);
}

.comparison-table tr:nth-child(even) td {
  background: var(--color-slate-50);
}

.method-card {
  border: var(--border-subtle);
  border-radius: var(--radius-card);
  padding: 2rem;
  margin: 1.5rem 0;
  background: var(--color-white);
  overflow: hidden;
}

.method-card h3 {
  font-family: var(--font-display);
  font-weight: 700;
  margin-bottom: 0.75rem;
}

.pros-cons {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.5rem;
  margin: 1rem 0;
}

.pros-cons ul {
  padding-left: 1.25rem;
}

.rating {
  display: inline-block;
  padding: 0.25rem 0.75rem;
  border-radius: 1rem;
  font-size: 0.75rem;
  font-weight: 700;
  text-transform: uppercase;
}

.rating-good {
  background: #dcfce7;
  color: #166534;
}

.rating-medium {
  background: #fef9c3;
  color: #854d0e;
}

.rating-bad {
  background: #fee2e2;
  color: #991b1b;
}

.related-articles {
  margin-top: 3rem;
  padding-top: 2rem;
  border-top: var(--border-subtle);
}

.related-articles h2 {
  font-family: var(--font-display);
  font-weight: 700;
  margin-bottom: 1rem;
}

.related-articles ul {
  list-style: none;
  padding: 0;
}

.related-articles li {
  margin-bottom: 0.75rem;
}

.related-articles a {
  color: var(--color-indigo);
  text-decoration: none;
  font-weight: 500;
}

.related-articles a:hover {
  text-decoration: underline;
}

.story-box {
  background: var(--color-slate-50);
  border: var(--border-subtle);
  border-radius: var(--radius-card);
  padding: 2rem;
  margin: 2rem 0;
  font-style: italic;
}

.mistake-box {
  border-left: 4px solid #ef4444;
  background: #fef2f2;
  padding: 1.5rem 2rem;
  margin: 1.5rem 0;
  border-radius: var(--radius-button);
}

.solution-box {
  border-left: 4px solid #22c55e;
  background: #f0fdf4;
  padding: 1.5rem 2rem;
  margin: 1.5rem 0;
  border-radius: var(--radius-button);
}

/* Article responsive adjustments */
@media (max-width: 768px) {
  .pros-cons {
    grid-template-columns: 1fr;
  }

  .article-cta-actions {
    flex-direction: column;
  }

  .article-cta-actions .btn {
    width: 100%;
  }

  .article {
    padding: 1rem;
  }
}

@media (max-width: 480px) {
  .comparison-table {
    font-size: 0.875rem;
  }

  .method-card {
    padding: 1.5rem;
  }
}