/* ═══════════════════════════════════════════════════════════
   SENTINEL LAYOUT — v4.0
   ═══════════════════════════════════════════════════════════ */

/* ── Header ── */
.header {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 100;
  height: 56px;
  background: rgba(4, 8, 16, 0.92);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--border);
}
.header-inner {
  display: flex;
  align-items: center;
  height: 100%;
  padding: 0 20px;
  gap: 16px;
}
.header-accent-line {
  position: absolute;
  bottom: 0; left: 0; right: 0;
  height: 1px;
  background: linear-gradient(90deg,
    transparent 0%,
    rgba(56,189,248,0.4) 25%,
    rgba(167,139,250,0.4) 50%,
    rgba(52,211,153,0.3) 75%,
    transparent 100%
  );
}

/* ── Brand ── */
.brand {
  display: flex;
  align-items: center;
  gap: 10px;
  cursor: pointer;
  flex-shrink: 0;
  user-select: none;
}
.brand-icon {
  color: var(--cyan);
  display: flex;
  align-items: center;
}
.brand-name {
  font-size: 15px;
  font-weight: 900;
  letter-spacing: 2.5px;
  text-transform: uppercase;
  color: var(--fg-0);
  background: linear-gradient(135deg, #f0f6ff 0%, #38bdf8 50%, #a78bfa 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}
.brand-sub {
  font-size: 9px;
  letter-spacing: 1.5px;
  text-transform: uppercase;
  color: var(--fg-3);
  margin-top: 1px;
}

/* ── Header Status Bar ── */
.header-status-bar {
  display: flex;
  align-items: center;
  gap: 12px;
  background: rgba(255,255,255,0.03);
  border: 1px solid var(--border);
  border-radius: 20px;
  padding: 5px 16px;
  margin: 0 auto;
}
.hdr-status-item, .header-status-item {
  display: flex;
  align-items: center;
  gap: 6px;
  cursor: default;
}
.status-label { font-size: 11px; font-weight: 600; color: var(--fg-2); letter-spacing: 0.5px; }
.hdr-sep { width: 1px; height: 12px; background: var(--border); }
.hdr-clock-wrap { text-align: right; }
.hdr-clock { font-size: 13px; font-weight: 600; color: var(--fg-1); display: block; }
.hdr-updated { font-size: 10px; color: var(--fg-3); display: block; }

/* ── Header Right ── */
.header-right {
  flex-shrink: 0;
  margin-left: auto;
}

/* ── Sidebar ── */
.sidebar {
  position: fixed;
  left: 0; top: 56px; bottom: 0;
  width: 220px;
  background: rgba(4, 8, 16, 0.95);
  border-right: 1px solid var(--border);
  display: flex;
  flex-direction: column;
  z-index: 50;
  overflow-y: auto;
  padding: 16px 0 0;
}
.nav-section { margin-bottom: 8px; }
.nav-section-label {
  padding: 0 16px 6px;
  font-size: 10px;
  font-weight: 700;
  letter-spacing: 1.2px;
  text-transform: uppercase;
  color: var(--fg-3);
}
.nav-item {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 10px 16px;
  cursor: pointer;
  position: relative;
  border-radius: var(--radius-md);
  margin: 1px 8px;
  transition: all 0.2s var(--ease);
  color: var(--fg-2);
  user-select: none;
}
.nav-item:hover {
  background: rgba(255,255,255,0.04);
  color: var(--fg-1);
}
.nav-item.active {
  background: linear-gradient(90deg, rgba(56,189,248,0.1), rgba(167,139,250,0.06));
  color: var(--fg-0);
  border: 1px solid rgba(56,189,248,0.15);
}
.nav-icon { display: flex; align-items: center; flex-shrink: 0; }
.nav-label { font-size: 13px; font-weight: 600; flex: 1; }
.nav-badge {
  font-size: 10px;
  font-weight: 700;
  background: var(--red-dim);
  color: var(--red);
  border: 1px solid var(--red-border);
  border-radius: 10px;
  padding: 1px 6px;
  min-width: 20px;
  text-align: center;
}
.nav-active-bar {
  display: none;
  position: absolute;
  left: 0; top: 20%; bottom: 20%;
  width: 2px;
  background: var(--cyan);
  border-radius: 2px;
  margin: -2px;
}
.nav-item.active .nav-active-bar { display: block; }
.sidebar-footer {
  margin-top: auto;
  padding: 16px;
  border-top: 1px solid var(--border-light);
}
.sidebar-version { font-size: 11px; font-weight: 700; color: var(--fg-2); }
.sidebar-build   { font-size: 10px; color: var(--fg-3); margin-top: 2px; }

/* ── Main Content ── */
.layout {
  display: flex;
  min-height: 100vh;
  position: relative;
  z-index: 1;
}
.main {
  flex: 1;
  margin-left: 220px;
  margin-top: 56px;
  padding: 28px 28px 60px;
  min-width: 0;
}

/* ── Views ── */
.view { display: none; }
.view.active { display: block; animation: view-in 0.2s var(--ease-out); }
@keyframes view-in { from { opacity: 0; transform: translateY(6px); } to { opacity: 1; transform: none; } }

/* ── View Header ── */
.view-header {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  margin-bottom: 24px;
  gap: 16px;
}
.view-eyebrow {
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 1.5px;
  text-transform: uppercase;
  color: var(--cyan);
  margin-bottom: 4px;
}
.view-title {
  font-size: 26px;
  font-weight: 900;
  color: var(--fg-0);
  letter-spacing: -0.5px;
  background: linear-gradient(135deg, var(--fg-0) 0%, rgba(240,246,255,0.7) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  line-height: 1.2;
}
.view-subtitle { font-size: 13px; color: var(--fg-2); margin-top: 4px; line-height: 1.6; }
.view-header-actions { display: flex; align-items: center; gap: 8px; flex-shrink: 0; padding-top: 4px; }

/* ── Hero Grid ── */
.hero-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
  margin-bottom: 24px;
}
.hero-tile {
  position: relative;
  background: var(--bg-glass);
  backdrop-filter: blur(20px);
  border: 1px solid var(--border);
  border-radius: var(--radius-xl);
  padding: 20px;
  overflow: hidden;
  transition: all 0.3s var(--ease);
  cursor: default;
}
.hero-tile:hover { border-color: rgba(255,255,255,0.12); transform: translateY(-2px); box-shadow: var(--shadow-md); }
.hero-tile.status-ok  { border-color: rgba(52,211,153,0.2); }
.hero-tile.status-warn { border-color: rgba(251,191,36,0.2); }
.hero-tile.status-err  { border-color: rgba(248,113,113,0.2); }
.hero-tile-glow {
  position: absolute;
  top: -40px; right: -40px;
  width: 120px; height: 120px;
  border-radius: 50%;
  filter: blur(50px);
  opacity: 0.2;
}
.glow-cyan   { background: var(--cyan); }
.glow-amber  { background: var(--amber); }
.glow-purple { background: var(--purple); }
.glow-emerald { background: var(--emerald); }
.hero-tile-inner { display: flex; gap: 14px; align-items: flex-start; position: relative; z-index: 1; }
.hero-tile-icon {
  width: 38px; height: 38px;
  border-radius: 10px;
  background: rgba(255,255,255,0.05);
  border: 1px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--fg-2);
  flex-shrink: 0;
}
.hero-tile-body { flex: 1; min-width: 0; }
.hero-tile-label {
  font-size: 11px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.6px;
  color: var(--fg-2);
  margin-bottom: 4px;
}
.hero-tile-value {
  font-size: 32px;
  font-weight: 900;
  color: var(--fg-0);
  letter-spacing: -1px;
  line-height: 1;
  margin-bottom: 4px;
  font-variant-numeric: tabular-nums;
  transition: color 0.3s var(--ease);
}
.hero-tile-sub { font-size: 11px; color: var(--fg-2); }
.hero-tile-trend { font-size: 11px; color: var(--fg-2); margin-top: 8px; position: relative; z-index: 1; }

/* ── Charts Row ── */
.charts-row {
  display: flex;
  gap: 16px;
  margin-bottom: 20px;
}
.flex-1 { flex: 1; }
.flex-2 { flex: 2; }
.chart-card {
  background: var(--bg-glass);
  backdrop-filter: blur(20px);
  border: 1px solid var(--border);
  border-radius: var(--radius-xl);
  overflow: hidden;
}
.chart-card-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 16px 20px 12px;
  border-bottom: 1px solid var(--border-light);
}
.chart-card-title {
  font-size: 13px;
  font-weight: 700;
  color: var(--fg-0);
  display: flex;
  align-items: center;
  gap: 8px;
}
.chart-title-icon { font-size: 15px; }
.chart-card-meta { font-size: 11px; color: var(--fg-2); }
.chart-wrap { padding: 16px 20px; }
.chart-tall { height: 220px; }
.chart-donut { height: 180px; display: flex; align-items: center; justify-content: center; }
.donut-legend {
  padding: 0 20px 16px;
  display: flex;
  flex-direction: column;
  gap: 6px;
}
.donut-legend-item {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 11px;
  color: var(--fg-1);
}
.donut-legend-dot {
  width: 8px; height: 8px;
  border-radius: 2px;
  flex-shrink: 0;
}
.donut-legend-count { margin-left: auto; font-family: var(--font-mono); color: var(--fg-0); font-size: 11px; font-weight: 600; }

/* ── Bottom Row ── */
.bottom-row {
  display: flex;
  gap: 16px;
  margin-bottom: 20px;
  align-items: flex-start;
}

/* ── Cases Grid ── */
.filter-bar {
  margin-bottom: 20px;
  padding: 16px 20px;
}
.filter-bar-inner { display: flex; gap: 16px; flex-wrap: wrap; align-items: flex-end; }
.filter-group { display: flex; flex-direction: column; gap: 4px; min-width: 140px; flex: 1; }
.filter-label { font-size: 10px; font-weight: 600; text-transform: uppercase; letter-spacing: 0.6px; color: var(--fg-2); }
.cases-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(400px, 1fr));
  gap: 14px;
}
.cases-loading { grid-column: 1/-1; padding: 40px; text-align: center; color: var(--fg-2); }

/* ── Sources Grid ── */
.sources-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 16px;
  margin-bottom: 32px;
}

/* ── Rule Catalog Section ── */
.rule-catalog-section { margin-top: 8px; }
.rules-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 12px;
  margin-top: 16px;
}

/* ── Reports Grid ── */
.reports-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
}
.report-builder, .quick-exports { padding: 24px; }

/* ── Scrollbar ── */
::-webkit-scrollbar { width: 6px; height: 6px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb { background: rgba(255,255,255,0.1); border-radius: 3px; }
::-webkit-scrollbar-thumb:hover { background: rgba(255,255,255,0.18); }

/* ── Responsive ── */
@media (max-width: 1100px) {
  .hero-grid { grid-template-columns: repeat(2, 1fr); }
  .charts-row { flex-direction: column; }
  .bottom-row { flex-direction: column; }
  .sources-grid { grid-template-columns: 1fr; }
}
@media (max-width: 768px) {
  .sidebar { display: none; }
  .main { margin-left: 0; padding: 16px; }
  .hero-grid { grid-template-columns: 1fr 1fr; }
  .cases-grid { grid-template-columns: 1fr; }
  .reports-grid { grid-template-columns: 1fr; }
  .header-status-bar { display: none; }
}