/* ============================================================
   UAP Investigations — Main Stylesheet
   2026 Corporate Design
   ============================================================ */

/* --- Reset & Base ----------------------------------------- */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

:root {
  --white:         #FFFFFF;
  --bg-secondary:  #F7F8FA;
  --surface:       #EEF0F4;
  --text-primary:  #0D1117;
  --text-secondary:#4B5563;
  --text-muted:    #9CA3AF;
  --accent:        #0F3460;
  --accent-hover:  #1A4A80;
  --accent-subtle: #EBF2FF;
  --border:        #E5E7EB;
  --border-strong: #D1D5DB;
  --green:         #059669;
  --amber:         #D97706;
  --red:           #DC2626;
  --footer-bg:     #0D1117;
  --radius:        6px;
  --shadow-sm:     0 1px 3px rgba(0,0,0,0.06);
  --shadow-md:     0 4px 16px rgba(0,0,0,0.08);
  --shadow-lg:     0 8px 32px rgba(0,0,0,0.12);
  --max-width:     1100px;
  --article-width: 740px;
}

html { font-size: 17px; scroll-behavior: smooth; }

body {
  font-family: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  font-size: 1rem;
  line-height: 1.75;
  color: var(--text-primary);
  background: var(--white);
  -webkit-font-smoothing: antialiased;
}

a { color: var(--accent); text-decoration: none; }
a:hover { color: var(--accent-hover); }
img { max-width: 100%; height: auto; display: block; }
ul { list-style: none; }

/* --- Header ----------------------------------------------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  width: 100%;
  background: var(--white);
  border-bottom: 1px solid var(--border);
  box-shadow: var(--shadow-sm);
}

/* Support both class name variants */
.nav-inner, .header-inner {
  width: 100%;
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 8px 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}

.nav-logo a, .header-logo a { display: flex; align-items: center; }

.logo-img {
  height: 90px;
  width: auto;
  max-width: 400px;
  object-fit: contain;
}

/* Support both nav class variants */
.nav-links, .site-nav ul {
  display: flex;
  align-items: center;
  gap: 4px;
  list-style: none;
  margin: 0;
  padding: 0;
}

.nav-links li a, .site-nav ul li a {
  display: block;
  padding: 6px 14px;
  font-size: 0.78rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.07em;
  color: var(--text-secondary);
  border-radius: var(--radius);
  transition: color 0.15s, background 0.15s;
}

.nav-links li a:hover, .nav-links li a.active,
.site-nav ul li a:hover, .site-nav ul li a.active {
  color: var(--accent);
  background: var(--accent-subtle);
}

.nav-mobile-toggle {
  display: none;
  background: none;
  border: none;
  font-size: 1.4rem;
  color: var(--text-primary);
  cursor: pointer;
  padding: 4px;
}

/* --- Hero -------------------------------------------------- */
.hero {
  background: var(--white);
  border-bottom: 1px solid var(--border);
  padding: 72px 24px 64px;
}

.hero-inner {
  max-width: var(--max-width);
  margin: 0 auto;
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 56px;
  align-items: center;
}

.hero-eyebrow {
  font-size: 0.72rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--accent);
  margin-bottom: 16px;
}

.hero-title {
  font-size: 2.6rem;
  font-weight: 800;
  line-height: 1.15;
  letter-spacing: -0.025em;
  color: var(--text-primary);
  margin-bottom: 20px;
}

.hero-desc {
  font-size: 1.05rem;
  line-height: 1.7;
  color: var(--text-secondary);
  max-width: 520px;
  margin-bottom: 32px;
}

.hero-actions { display: flex; gap: 12px; flex-wrap: wrap; }

.btn {
  display: inline-flex;
  align-items: center;
  padding: 11px 24px;
  border-radius: var(--radius);
  font-size: 0.875rem;
  font-weight: 600;
  transition: all 0.15s;
  cursor: pointer;
  border: none;
}

.btn-primary {
  background: var(--accent);
  color: var(--white);
}
.btn-primary:hover {
  background: var(--accent-hover);
  color: var(--white);
  transform: translateY(-1px);
  box-shadow: 0 4px 12px rgba(15,52,96,0.3);
}

.btn-secondary {
  background: var(--white);
  color: var(--accent);
  border: 1.5px solid var(--accent);
}
.btn-secondary:hover {
  background: var(--accent-subtle);
  color: var(--accent);
}

.hero-stats {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
}

.stat-card {
  background: var(--bg-secondary);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 20px 24px;
  text-align: center;
  min-width: 120px;
}

.stat-number {
  font-size: 1.8rem;
  font-weight: 800;
  color: var(--accent);
  line-height: 1;
  margin-bottom: 6px;
}

.stat-label {
  font-size: 0.72rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.07em;
  color: var(--text-muted);
}

/* --- Home Content ------------------------------------------ */
.home-content { padding: 64px 24px; }

.home-content-inner {
  max-width: var(--max-width);
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 56px;
}

.home-section {}

.section-header {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  margin-bottom: 24px;
  padding-bottom: 12px;
  border-bottom: 2px solid var(--border);
}

.section-title {
  font-size: 1.1rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--text-primary);
}

.section-link {
  font-size: 0.82rem;
  font-weight: 600;
  color: var(--accent);
}

.card-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}

/* --- Cards ------------------------------------------------- */
.card {
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 22px 24px;
  display: flex;
  flex-direction: column;
  gap: 10px;
  transition: transform 0.15s, box-shadow 0.15s, border-color 0.15s;
}

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

.card-meta {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-wrap: wrap;
}

.card-category {
  display: inline-block;
  font-size: 0.68rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  padding: 3px 9px;
  border-radius: 3px;
  background: var(--accent-subtle);
  color: var(--accent);
}

.card-date, .card-time {
  font-size: 0.75rem;
  color: var(--text-muted);
}

.card-title {
  font-size: 1rem;
  font-weight: 700;
  line-height: 1.4;
  letter-spacing: -0.01em;
}

.card-title a { color: var(--text-primary); }
.card-title a:hover { color: var(--accent); }

.card-excerpt {
  font-size: 0.875rem;
  color: var(--text-secondary);
  line-height: 1.6;
  flex-grow: 1;
}

.card-readmore {
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--accent);
  margin-top: 4px;
}

/* --- Status Badges ----------------------------------------- */
.badge-confirmed    { background: #DCFCE7; color: #15803D; }
.badge-declassified { background: #DBEAFE; color: #1D4ED8; }
.badge-classified   { background: #F1F5F9; color: #475569; }
.badge-unresolved   { background: #FEF9C3; color: #A16207; }
.badge-denied       { background: #FEE2E2; color: #DC2626; }

/* --- Page Layout (list + single) --------------------------- */
.page-container, .article-container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 48px 24px 80px;
}

.article-container { max-width: var(--article-width); }

.page-header { margin-bottom: 40px; }

.breadcrumb {
  font-size: 0.78rem;
  color: var(--text-muted);
  margin-bottom: 12px;
}
.breadcrumb a { color: var(--text-muted); }
.breadcrumb a:hover { color: var(--accent); }

.page-title, .article-title {
  font-size: 2rem;
  font-weight: 800;
  letter-spacing: -0.02em;
  line-height: 1.2;
  color: var(--text-primary);
  margin-bottom: 12px;
}

.page-desc { color: var(--text-secondary); font-size: 1rem; margin-top: 12px; }

/* --- List Cards -------------------------------------------- */
.list-container { display: flex; flex-direction: column; gap: 2px; }

.list-card {
  padding: 24px 0;
  border-bottom: 1px solid var(--border);
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.list-card-meta {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-wrap: wrap;
}

.list-card-title {
  font-size: 1.15rem;
  font-weight: 700;
  letter-spacing: -0.01em;
  line-height: 1.3;
}
.list-card-title a { color: var(--text-primary); }
.list-card-title a:hover { color: var(--accent); }

.list-card-desc {
  color: var(--text-secondary);
  font-size: 0.9rem;
  line-height: 1.6;
}

.read-time { font-size: 0.75rem; color: var(--text-muted); }

.list-card-tags { display: flex; gap: 6px; flex-wrap: wrap; margin-top: 4px; }

.tag {
  display: inline-block;
  padding: 2px 10px;
  font-size: 0.72rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  border-radius: 3px;
  background: var(--surface);
  color: var(--text-secondary);
  border: 1px solid var(--border);
  transition: background 0.12s, color 0.12s;
}
.tag:hover { background: var(--accent-subtle); color: var(--accent); border-color: var(--accent); }

.empty-state { color: var(--text-muted); font-style: italic; padding: 32px 0; }

/* --- Article Header ---------------------------------------- */
.article-cats { margin-bottom: 10px; display: flex; gap: 8px; flex-wrap: wrap; }

.article-meta {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-wrap: wrap;
  font-size: 0.82rem;
  color: var(--text-muted);
  margin-top: 10px;
  margin-bottom: 8px;
}
.meta-sep { color: var(--border-strong); }

.article-desc {
  font-size: 1.1rem;
  color: var(--text-secondary);
  line-height: 1.65;
  margin-top: 16px;
  padding-top: 16px;
  border-top: 1px solid var(--border);
}

/* --- Article Body ------------------------------------------ */
.article-body {
  margin-top: 40px;
  font-size: 1rem;
  line-height: 1.8;
  color: var(--text-primary);
}

.article-body > * + * { margin-top: 1.4em; }

.article-body h2 {
  font-size: 1.4rem;
  font-weight: 800;
  letter-spacing: -0.015em;
  color: var(--accent);
  margin-top: 2.8em;
  margin-bottom: 0.6em;
  padding-bottom: 10px;
  border-bottom: 2px solid var(--border);
}

.article-body h3 {
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--text-primary);
  margin-top: 2em;
  margin-bottom: 0.4em;
}

.article-body h4 {
  font-size: 0.95rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--text-secondary);
  margin-top: 1.5em;
}

.article-body p { margin-bottom: 1em; }

.article-body a {
  color: var(--accent);
  text-decoration: underline;
  text-underline-offset: 3px;
}

.article-body a:hover { color: var(--accent-hover); }

.article-body blockquote {
  border-left: 3px solid var(--accent);
  margin: 1.5em 0;
  padding: 12px 20px;
  background: var(--accent-subtle);
  border-radius: 0 var(--radius) var(--radius) 0;
  color: var(--text-secondary);
  font-style: italic;
}

.article-body ul, .article-body ol {
  padding-left: 1.5em;
  margin-bottom: 1em;
}
.article-body ul { list-style: disc; }
.article-body ol { list-style: decimal; }
.article-body li { margin-bottom: 0.3em; }

.article-body code {
  background: var(--surface);
  color: var(--accent);
  padding: 2px 7px;
  border-radius: 3px;
  font-size: 0.875em;
  font-family: "JetBrains Mono", "Fira Code", monospace;
}

.article-body pre {
  background: var(--text-primary);
  color: #E2E8F0;
  padding: 20px 24px;
  border-radius: var(--radius);
  overflow-x: auto;
  font-size: 0.875rem;
  line-height: 1.6;
}

.article-body pre code { background: none; color: inherit; padding: 0; font-size: inherit; }

/* Tables */
.article-body table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.9rem;
  margin: 1.5em 0;
  border-radius: var(--radius);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
}

.article-body th {
  background: var(--accent);
  color: var(--white);
  font-weight: 600;
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.07em;
  padding: 12px 16px;
  text-align: left;
}

.article-body td {
  padding: 11px 16px;
  border-bottom: 1px solid var(--border);
  color: var(--text-primary);
}

.article-body tr:nth-child(even) td { background: var(--bg-secondary); }
.article-body tr:last-child td { border-bottom: none; }
.article-body tr:hover td { background: var(--accent-subtle); }

/* Horizontal rule */
.article-body hr {
  border: none;
  border-top: 1px solid var(--border);
  margin: 2.5em 0;
}

/* --- Article Footer ---------------------------------------- */
.article-footer { margin-top: 56px; padding-top: 32px; border-top: 1px solid var(--border); }

.article-nav {
  display: flex;
  justify-content: space-between;
  gap: 20px;
}

.article-nav-link {
  display: flex;
  flex-direction: column;
  gap: 4px;
  max-width: 45%;
  color: var(--text-primary);
}

.article-nav-link.next { text-align: right; margin-left: auto; }

.nav-label {
  font-size: 0.72rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.07em;
  color: var(--accent);
}

.nav-title {
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--text-primary);
}

/* --- Footer ------------------------------------------------- */
.site-footer {
  background: var(--footer-bg);
  border-top: 2px solid var(--accent);
  padding: 56px 24px 40px;
  margin-top: 80px;
}

.footer-inner {
  max-width: var(--max-width);
  margin: 0 auto;
  display: grid;
  grid-template-columns: 2fr 1fr 1.5fr 1fr;
  gap: 40px;
}

.footer-logo {
  height: 44px;
  width: auto;
  max-width: 200px;
  object-fit: contain;
  margin-bottom: 14px;
  filter: brightness(0) invert(1);
  opacity: 0.85;
}

.footer-tagline {
  font-size: 0.82rem;
  color: var(--text-muted);
  line-height: 1.6;
  max-width: 260px;
}

.footer-heading {
  font-size: 0.7rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: #6B7280;
  margin-bottom: 14px;
}

.footer-links li { margin-bottom: 8px; }

.footer-links a {
  font-size: 0.85rem;
  color: var(--text-muted);
  transition: color 0.12s;
}
.footer-links a:hover { color: var(--white); }

.footer-newsletter-text {
  font-size: 0.82rem;
  color: var(--text-muted);
  line-height: 1.6;
  margin-bottom: 14px;
}

.footer-subscribe-btn {
  display: inline-block;
  padding: 8px 18px;
  background: var(--accent);
  color: var(--white);
  font-size: 0.8rem;
  font-weight: 600;
  border-radius: var(--radius);
  transition: background 0.15s;
}
.footer-subscribe-btn:hover { background: var(--accent-hover); color: var(--white); }

.footer-copy {
  font-size: 0.75rem;
  color: #4B5563;
  margin-top: 16px;
}

/* --- Pagination -------------------------------------------- */
.pagination {
  display: flex;
  justify-content: center;
  gap: 8px;
  margin-top: 48px;
  padding-top: 32px;
  border-top: 1px solid var(--border);
}

.pagination a, .pagination span {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 38px;
  height: 38px;
  border-radius: var(--radius);
  font-size: 0.875rem;
  font-weight: 500;
  border: 1px solid var(--border);
  color: var(--text-secondary);
}

.pagination a:hover { border-color: var(--accent); color: var(--accent); background: var(--accent-subtle); }
.pagination .active { background: var(--accent); color: var(--white); border-color: var(--accent); }

/* --- Responsive -------------------------------------------- */
@media (max-width: 900px) {
  .hero-inner { grid-template-columns: 1fr; gap: 40px; }
  .hero-stats { grid-template-columns: repeat(4, 1fr); }
  .card-grid { grid-template-columns: 1fr 1fr; }
  .footer-inner { grid-template-columns: 1fr 1fr; gap: 32px; }
}

@media (max-width: 640px) {
  html { font-size: 16px; }
  .hero { padding: 48px 20px 40px; }
  .hero-title { font-size: 2rem; }
  .hero-stats { grid-template-columns: 1fr 1fr; }
  .card-grid { grid-template-columns: 1fr; }
  .footer-inner { grid-template-columns: 1fr; }
  .article-nav { flex-direction: column; }
  .article-nav-link.next { text-align: left; margin-left: 0; }

  .nav-links {
    display: none;
    position: absolute;
    top: 80px;
    left: 0;
    right: 0;
    background: var(--white);
    border-bottom: 1px solid var(--border);
    padding: 12px 24px;
    flex-direction: column;
    gap: 4px;
  }
  .nav-links.open { display: flex; }
  .nav-mobile-toggle { display: block; }
}