/* ============================================================
   SENTINEL RESEARCH — Global Stylesheet
   Dark theme, electric blue accent, professional AI security
   ============================================================ */

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

:root {
  --bg:         #0a0a0f;
  --bg-2:       #0f0f18;
  --bg-3:       #13131f;
  --bg-card:    #111120;
  --border:     rgba(255,255,255,0.07);
  --border-2:   rgba(0,212,255,0.2);
  --blue:       #00d4ff;
  --blue-dim:   rgba(0,212,255,0.12);
  --blue-glow:  rgba(0,212,255,0.3);
  --orange:     #ff6b35;
  --orange-dim: rgba(255,107,53,0.12);
  --text:       #e8e8f0;
  --text-2:     #9a9ab0;
  --text-3:     #5a5a78;
  --critical:   #ff3b5c;
  --critical-bg: rgba(255,59,92,0.12);
  --high:       #ff6b35;
  --high-bg:    rgba(255,107,53,0.12);
  --medium:     #ffc107;
  --medium-bg:  rgba(255,193,7,0.12);
  --font-body:  'Inter', -apple-system, sans-serif;
  --font-mono:  'JetBrains Mono', 'Fira Code', monospace;
  --radius:     8px;
  --radius-lg:  14px;
  --nav-h:      68px;
  --max-w:      1120px;
  --transition: 0.2s ease;
}

html { scroll-behavior: smooth; }

body {
  background: var(--bg);
  color: var(--text);
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
}

.container {
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 0 24px;
}

.mono { font-family: var(--font-mono); }

a { color: var(--blue); text-decoration: none; transition: opacity var(--transition); }
a:hover { opacity: 0.8; }

img { max-width: 100%; display: block; }

/* ---------- TYPOGRAPHY ---------- */
h1, h2, h3, h4 { line-height: 1.2; font-weight: 600; color: #fff; }
h1 { font-size: clamp(2.2rem, 5vw, 3.8rem); letter-spacing: -0.02em; }
h2 { font-size: clamp(1.6rem, 3vw, 2.2rem); letter-spacing: -0.01em; }
h3 { font-size: 1.15rem; font-weight: 600; }
h4 { font-size: 1rem; font-weight: 600; }

/* ---------- BUTTONS ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 12px 24px;
  border-radius: var(--radius);
  font-size: 0.95rem;
  font-weight: 500;
  font-family: var(--font-body);
  cursor: pointer;
  transition: all var(--transition);
  border: 1.5px solid transparent;
  text-decoration: none;
}
.btn-primary {
  background: var(--blue);
  color: var(--bg);
  border-color: var(--blue);
}
.btn-primary:hover {
  background: #1adeff;
  opacity: 1;
  box-shadow: 0 0 24px var(--blue-glow);
}
.btn-ghost {
  background: transparent;
  color: var(--text);
  border-color: var(--border);
}
.btn-ghost:hover {
  border-color: var(--blue);
  color: var(--blue);
  opacity: 1;
}
.btn-sm { padding: 8px 16px; font-size: 0.875rem; }
.btn-lg { padding: 16px 32px; font-size: 1.05rem; }
.btn-full { width: 100%; justify-content: center; }

/* ---------- NAV ---------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  height: var(--nav-h);
  background: rgba(10,10,15,0.92);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
}

.nav-inner {
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 0 24px;
  height: 100%;
  display: flex;
  align-items: center;
  gap: 40px;
}

.logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: 600;
  font-size: 1.05rem;
  color: #fff;
  text-decoration: none;
  flex-shrink: 0;
}
.logo:hover { opacity: 1; }
.logo-mark {
  color: var(--blue);
  font-size: 1.1rem;
}
.logo-text { color: #fff; }

.nav-links {
  display: flex;
  align-items: center;
  gap: 4px;
  list-style: none;
  margin-left: auto;
}
.nav-links a {
  display: block;
  padding: 8px 14px;
  border-radius: 6px;
  font-size: 0.9rem;
  color: var(--text-2);
  transition: all var(--transition);
}
.nav-links a:hover,
.nav-links a.active {
  color: #fff;
  background: rgba(255,255,255,0.05);
  opacity: 1;
}
.nav-cta {
  background: var(--blue-dim) !important;
  color: var(--blue) !important;
  border: 1px solid var(--border-2);
  margin-left: 8px;
}
.nav-cta:hover {
  background: var(--blue) !important;
  color: var(--bg) !important;
}

.nav-toggle {
  display: none;
  background: none;
  border: none;
  color: var(--text);
  font-size: 1.4rem;
  cursor: pointer;
  margin-left: auto;
  padding: 4px 8px;
}

/* ---------- HERO ---------- */
.hero {
  position: relative;
  padding: 100px 0 80px;
  overflow: hidden;
}

.hero-bg-grid {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(0,212,255,0.04) 1px, transparent 1px),
    linear-gradient(90deg, rgba(0,212,255,0.04) 1px, transparent 1px);
  background-size: 60px 60px;
  mask-image: radial-gradient(ellipse 80% 80% at 50% 50%, black 40%, transparent 100%);
}

.hero .container { position: relative; z-index: 1; }

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 8px 16px;
  background: var(--bg-card);
  border: 1px solid var(--border-2);
  border-radius: 100px;
  font-size: 0.75rem;
  color: var(--blue);
  letter-spacing: 0.08em;
  margin-bottom: 28px;
}

.pulse-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--blue);
  flex-shrink: 0;
  animation: pulse-anim 2s ease-in-out infinite;
}
@keyframes pulse-anim {
  0%, 100% { box-shadow: 0 0 0 0 rgba(0,212,255,0.4); }
  50% { box-shadow: 0 0 0 6px rgba(0,212,255,0); }
}

.hero-headline {
  max-width: 820px;
  margin-bottom: 20px;
}

.hero-sub {
  max-width: 600px;
  color: var(--text-2);
  font-size: 1.1rem;
  line-height: 1.7;
  margin-bottom: 36px;
}

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

/* ---------- STATS BAR ---------- */
.stats-bar {
  background: var(--bg-card);
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
  padding: 28px 0;
}
.stats-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
  text-align: center;
}
.stat { display: flex; flex-direction: column; gap: 4px; }
.stat-num {
  font-size: 2rem;
  font-weight: 700;
  color: var(--blue);
  font-family: var(--font-mono);
  letter-spacing: -0.02em;
}
.stat-label { font-size: 0.8rem; color: var(--text-3); text-transform: uppercase; letter-spacing: 0.06em; }

/* ---------- SECTIONS ---------- */
.section { padding: 80px 0; }
.section-dark { background: var(--bg-2); }

.section-title { margin-bottom: 10px; }
.section-sub {
  color: var(--text-2);
  font-size: 1rem;
  margin-bottom: 48px;
  max-width: 600px;
}

.section-header-row {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 20px;
  margin-bottom: 40px;
  flex-wrap: wrap;
}
.section-header-row .section-sub { margin-bottom: 0; }

/* ---------- FEATURE CARDS ---------- */
.feature-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}
.feature-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 32px 28px;
  transition: border-color var(--transition);
}
.feature-card:hover { border-color: var(--border-2); }
.feature-icon { font-size: 2rem; margin-bottom: 16px; }
.feature-card h3 { margin-bottom: 10px; }
.feature-card p { color: var(--text-2); font-size: 0.95rem; line-height: 1.7; }

/* ---------- FINDING CARDS ---------- */
.finding-cards {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}
.finding-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 28px;
  display: flex;
  flex-direction: column;
  gap: 14px;
  transition: border-color var(--transition), transform var(--transition);
}
.finding-card:hover {
  border-color: var(--border-2);
  transform: translateY(-2px);
}

.finding-meta {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-wrap: wrap;
}
.finding-id { font-size: 0.75rem; color: var(--text-3); }
.finding-title { font-size: 1.05rem; font-weight: 600; line-height: 1.35; color: #fff; }
.finding-desc { color: var(--text-2); font-size: 0.9rem; line-height: 1.65; flex: 1; }
.finding-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
  flex-wrap: wrap;
  padding-top: 12px;
  border-top: 1px solid var(--border);
}

/* ---------- BADGES ---------- */
.badge {
  display: inline-block;
  padding: 3px 9px;
  border-radius: 4px;
  font-size: 0.7rem;
  font-weight: 700;
  font-family: var(--font-mono);
  letter-spacing: 0.05em;
  text-transform: uppercase;
}
.badge-critical { background: var(--critical-bg); color: var(--critical); border: 1px solid rgba(255,59,92,0.3); }
.badge-high     { background: var(--high-bg);     color: var(--high);     border: 1px solid rgba(255,107,53,0.3); }
.badge-medium   { background: var(--medium-bg);   color: var(--medium);   border: 1px solid rgba(255,193,7,0.3); }

/* ---------- TAGS ---------- */
.tag {
  display: inline-block;
  padding: 3px 8px;
  border-radius: 4px;
  font-size: 0.75rem;
  background: rgba(255,255,255,0.05);
  color: var(--text-2);
  border: 1px solid var(--border);
}

/* ---------- STATUS ---------- */
.status {
  font-size: 0.75rem;
  font-family: var(--font-mono);
  padding: 3px 8px;
  border-radius: 4px;
}
.status-confirmed {
  color: #4ade80;
  background: rgba(74,222,128,0.1);
}
.status-inprogress {
  color: var(--medium);
  background: var(--medium-bg);
}
.status-theoretical {
  color: var(--text-3);
  background: rgba(255,255,255,0.04);
}

/* ---------- SUBSCRIBE ---------- */
.subscribe { background: var(--bg-3); border-top: 1px solid var(--border); border-bottom: 1px solid var(--border); }
.subscribe-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 40px;
  flex-wrap: wrap;
}
.subscribe-text h2 { font-size: 1.6rem; margin-bottom: 8px; }
.subscribe-text p { color: var(--text-2); max-width: 480px; }

/* ---------- FOOTER ---------- */
.site-footer {
  background: var(--bg);
  border-top: 1px solid var(--border);
  padding: 36px 0;
}
.footer-inner {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 16px;
  text-align: center;
}
.footer-brand {
  display: flex;
  align-items: center;
  gap: 8px;
  font-weight: 600;
  color: #fff;
}
.footer-links {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 4px;
}
.footer-links a {
  color: var(--text-3);
  font-size: 0.875rem;
  padding: 4px 10px;
  border-radius: 4px;
}
.footer-links a:hover { color: var(--text); opacity: 1; }
.footer-copy { color: var(--text-3); font-size: 0.8rem; }

/* ---------- PAGE HERO ---------- */
.page-hero {
  padding: 60px 0 40px;
  border-bottom: 1px solid var(--border);
  background: linear-gradient(180deg, var(--bg-2) 0%, var(--bg) 100%);
}
.page-label {
  font-size: 0.75rem;
  color: var(--blue);
  letter-spacing: 0.1em;
  margin-bottom: 16px;
}
.page-hero h1 { font-size: clamp(1.8rem, 4vw, 2.8rem); margin-bottom: 14px; }
.page-sub { color: var(--text-2); font-size: 1rem; max-width: 620px; line-height: 1.7; }

/* ---------- METHODOLOGY ---------- */
.method-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
}
.method-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 28px 24px;
}
.method-label {
  font-size: 0.7rem;
  color: var(--blue);
  letter-spacing: 0.1em;
  display: block;
  margin-bottom: 12px;
}
.method-card h3 { font-size: 1rem; margin-bottom: 8px; }
.method-card p { font-size: 0.875rem; color: var(--text-2); line-height: 1.65; }

/* ---------- FINDINGS TABLE ---------- */
.table-filters {
  display: flex;
  gap: 8px;
  margin-bottom: 20px;
  flex-wrap: wrap;
}
.filter-btn {
  padding: 7px 16px;
  border-radius: 6px;
  border: 1px solid var(--border);
  background: transparent;
  color: var(--text-2);
  font-size: 0.875rem;
  font-family: var(--font-body);
  cursor: pointer;
  transition: all var(--transition);
}
.filter-btn:hover, .filter-btn.active {
  border-color: var(--blue);
  color: var(--blue);
  background: var(--blue-dim);
}

.findings-table-wrap {
  overflow-x: auto;
  border-radius: var(--radius-lg);
  border: 1px solid var(--border);
}
.findings-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.9rem;
}
.findings-table thead {
  background: rgba(255,255,255,0.03);
  border-bottom: 1px solid var(--border);
}
.findings-table th {
  text-align: left;
  padding: 14px 16px;
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--text-3);
  text-transform: uppercase;
  letter-spacing: 0.06em;
  white-space: nowrap;
}
.findings-table td {
  padding: 14px 16px;
  border-bottom: 1px solid var(--border);
  vertical-align: middle;
}
.findings-table tr:last-child td { border-bottom: none; }
.findings-table tbody tr { transition: background var(--transition); }
.findings-table tbody tr:hover { background: rgba(0,212,255,0.03); }
.findings-table tr.hidden { display: none; }

.finding-name { font-weight: 500; color: #fff; }
.table-note {
  margin-top: 16px;
  font-size: 0.8rem;
  color: var(--text-3);
  text-align: center;
}

/* ---------- ORIGIN / TIMELINE ---------- */
.origin-grid {
  display: grid;
  grid-template-columns: 1fr 360px;
  gap: 60px;
  align-items: start;
}
.origin-text h2 { margin-bottom: 36px; }

.timeline { position: relative; padding-left: 28px; }
.timeline::before {
  content: '';
  position: absolute;
  left: 7px;
  top: 8px;
  bottom: 8px;
  width: 1px;
  background: linear-gradient(180deg, var(--blue), transparent);
}
.tl-item {
  position: relative;
  margin-bottom: 36px;
}
.tl-item:last-child { margin-bottom: 0; }
.tl-marker {
  position: absolute;
  left: -28px;
  top: 6px;
  width: 14px;
  height: 14px;
  border-radius: 50%;
  background: var(--bg-3);
  border: 2px solid var(--border-2);
}
.tl-marker-active {
  background: var(--blue);
  border-color: var(--blue);
  box-shadow: 0 0 12px var(--blue-glow);
}
.tl-content h3 { font-size: 1rem; margin-bottom: 6px; }
.tl-content p { font-size: 0.9rem; color: var(--text-2); line-height: 1.65; }

.aside-card {
  background: var(--bg-card);
  border: 1px solid var(--border-2);
  border-radius: var(--radius-lg);
  padding: 28px;
  position: sticky;
  top: calc(var(--nav-h) + 24px);
}
.aside-label { font-size: 0.7rem; color: var(--blue); letter-spacing: 0.1em; display: block; margin-bottom: 12px; }
.aside-card h3 { margin-bottom: 12px; }
.aside-card p { font-size: 0.9rem; color: var(--text-2); margin-bottom: 12px; line-height: 1.65; }
.aside-card p:last-child { margin-bottom: 0; }

/* ---------- HOW IT WORKS ---------- */
.how-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
}
.how-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 28px 24px;
  transition: border-color var(--transition);
}
.how-card:hover { border-color: var(--border-2); }
.how-icon {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--blue);
  margin-bottom: 14px;
  display: block;
}
.how-card h3 { font-size: 1rem; margin-bottom: 8px; }
.how-card p { font-size: 0.875rem; color: var(--text-2); line-height: 1.65; }

/* ---------- TEAM ---------- */
.team-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
  max-width: 760px;
  margin: 0 auto 36px;
}
.team-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 32px 28px;
  text-align: center;
}
.team-avatar {
  width: 72px;
  height: 72px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.4rem;
  font-weight: 700;
  margin: 0 auto 20px;
  font-family: var(--font-mono);
}
.human-avatar {
  background: rgba(255,107,53,0.12);
  border: 2px solid rgba(255,107,53,0.3);
  color: var(--orange);
}
.ai-avatar {
  background: var(--blue-dim);
  border: 2px solid var(--border-2);
  color: var(--blue);
}
.team-card h3 { margin-bottom: 4px; }
.team-role { font-size: 0.75rem; color: var(--blue); display: block; margin-bottom: 14px; }
.team-card p { font-size: 0.9rem; color: var(--text-2); line-height: 1.65; margin-bottom: 8px; }
.team-note { font-size: 0.75rem; color: var(--text-3); }
.team-statement {
  text-align: center;
  color: var(--text-2);
  font-size: 0.95rem;
  max-width: 600px;
  margin: 0 auto;
  line-height: 1.7;
}

/* ---------- DISCLOSURE ---------- */
.disclosure-inner { max-width: 840px; }
.disclosure-inner h2 { margin-bottom: 12px; }
.disclosure-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
  margin-top: 36px;
}
.disclosure-item {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 24px;
}
.disclosure-item h3 { font-size: 1rem; margin-bottom: 8px; }
.disclosure-item p { font-size: 0.9rem; color: var(--text-2); line-height: 1.65; }
.disclosure-item a { color: var(--blue); }

/* ---------- CONTACT ---------- */
.contact-grid {
  display: grid;
  grid-template-columns: 1fr 360px;
  gap: 60px;
  align-items: start;
}
.contact-form-wrap h2 { margin-bottom: 28px; }

.contact-form { display: flex; flex-direction: column; gap: 20px; }
.form-group { display: flex; flex-direction: column; gap: 6px; }
.form-group label { font-size: 0.875rem; font-weight: 500; color: var(--text-2); }
.form-group input,
.form-group select,
.form-group textarea {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 12px 16px;
  color: var(--text);
  font-size: 0.95rem;
  font-family: var(--font-body);
  transition: border-color var(--transition);
  width: 100%;
}
.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
  outline: none;
  border-color: var(--blue);
}
.form-group select { cursor: pointer; }
.form-group textarea { resize: vertical; min-height: 120px; }
.form-note { font-size: 0.75rem; color: var(--text-3); text-align: center; line-height: 1.5; }

.contact-sidebar { display: flex; flex-direction: column; gap: 20px; }
.contact-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 24px;
}
.contact-card-highlight { border-color: rgba(255,59,92,0.3); background: rgba(255,59,92,0.05); }
.contact-card h3 { font-size: 1rem; margin-bottom: 8px; }
.contact-card p { font-size: 0.875rem; color: var(--text-2); line-height: 1.65; margin-bottom: 6px; }
.contact-email {
  display: block;
  color: var(--blue);
  font-size: 0.9rem;
  margin-top: 6px;
}

/* ---------- DISCLOSURE / POLICY (Contact page) ---------- */
.disclosure-summary h2 { margin-bottom: 10px; }
.policy-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
  margin-top: 36px;
}
.policy-item {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 24px;
}
.policy-icon { font-size: 1.5rem; display: block; margin-bottom: 12px; }
.policy-item h4 { margin-bottom: 8px; }
.policy-item p { font-size: 0.875rem; color: var(--text-2); line-height: 1.65; }

/* ---------- MOBILE MENU ---------- */
@media (max-width: 860px) {
  .nav-links { display: none; flex-direction: column; position: fixed; top: var(--nav-h); left: 0; right: 0; background: var(--bg); border-bottom: 1px solid var(--border); padding: 16px; gap: 4px; z-index: 99; }
  .nav-links.open { display: flex; }
  .nav-links li { width: 100%; }
  .nav-links a { width: 100%; }
  .nav-cta { margin-left: 0 !important; }
  .nav-toggle { display: block; }
}

/* ---------- RESPONSIVE ---------- */
@media (max-width: 1024px) {
  .feature-grid,
  .finding-cards { grid-template-columns: 1fr 1fr; }
  .method-grid,
  .how-grid { grid-template-columns: 1fr 1fr; }
  .origin-grid { grid-template-columns: 1fr; }
  .aside-card { position: static; }
  .policy-grid { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 720px) {
  .stats-grid { grid-template-columns: 1fr 1fr; }
  .feature-grid,
  .finding-cards,
  .method-grid,
  .how-grid,
  .team-grid,
  .disclosure-grid,
  .contact-grid { grid-template-columns: 1fr; }
  .subscribe-inner { flex-direction: column; text-align: center; }
  .hero { padding: 60px 0 48px; }
  .section { padding: 56px 0; }
  .policy-grid { grid-template-columns: 1fr; }
}

@media (max-width: 480px) {
  .stats-grid { grid-template-columns: 1fr 1fr; }
  .hero-actions { flex-direction: column; }
  .hero-actions .btn { width: 100%; justify-content: center; }
  h1 { font-size: 2rem; }
}