:root {
  color-scheme: light;
  --bg: #f6f8fb;
  --panel: #ffffff;
  --text: #172033;
  --muted: #607089;
  --line: #dce3ee;
  --accent: #2563eb;
  --accent-soft: #e8f0ff;
  --shadow: 0 10px 30px rgba(23, 32, 51, 0.08);
  --ui-zoom: 1;
  --cell-covered: #166534;
  --cell-covered-bg: #dcfce7;
  --cell-covered-soft: #bbf7d0;
  --cell-empty: #e5e7eb;
  --cell-empty-bg: #f9fafb;
  --cell-dimmed: #d1d5db;
  --cell-dimmed-bg: #f3f4f6;
  --highlight-border: #2563eb;
  --highlight-glow: rgba(37, 99, 235, 0.25);
}

[data-theme="dark"] {
  color-scheme: dark;
  --bg: #0d1117;
  --panel: #151b23;
  --text: #e6edf3;
  --muted: #8b949e;
  --line: #30363d;
  --accent: #58a6ff;
  --accent-soft: #102a44;
  --shadow: none;
  --cell-covered: #4ade80;
  --cell-covered-bg: #052e16;
  --cell-covered-soft: #166534;
  --cell-empty: #374151;
  --cell-empty-bg: #1f2937;
  --cell-dimmed: #4b5563;
  --cell-dimmed-bg: #111827;
  --highlight-border: #58a6ff;
  --highlight-glow: rgba(88, 166, 255, 0.25);
}

* { box-sizing: border-box; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  font-weight: 400;
  zoom: var(--ui-zoom);
}

.app-header {
  display: flex;
  flex-direction: column;
  gap: 12px;
  padding: 32px clamp(20px, 4vw, 56px) 20px;
  border-bottom: 1px solid var(--line);
  background: var(--panel);
}

.header-actions {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: flex-start;
  gap: 8px;
}

.header-actions .status { margin-left: auto; }

.header-btn {
  display: inline-flex;
  align-items: center;
  min-height: 36px;
  padding: 4px 14px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--panel);
  color: var(--text);
  font: inherit;
  font-size: 13px;
  font-weight: 600;
  text-decoration: none;
  cursor: pointer;
}
.header-btn:hover { border-color: var(--accent); color: var(--accent); }

.zoom-control { display: inline-flex; gap: 6px; }
.zoom-control button { min-width: 34px; padding-inline: 8px; }

button {
  min-height: 36px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--panel);
  color: var(--text);
  font: inherit;
  font-size: 13px;
  font-weight: 600;
  padding: 7px 11px;
  cursor: pointer;
}
button:hover { border-color: var(--accent); }

.eyebrow {
  margin: 0 0 6px;
  color: var(--accent);
  font-size: 13px;
  font-weight: 700;
  text-transform: uppercase;
}

h1 {
  margin: 0;
  font-size: clamp(30px, 4vw, 48px);
  line-height: 1.05;
}

.disclaimer {
  max-width: 760px;
  margin: 12px 0 0;
  color: var(--muted);
  font-size: 14px;
  line-height: 1.45;
}
.disclaimer a { color: var(--accent); font-weight: 800; text-decoration: none; }
.disclaimer a:hover { text-decoration: underline; }

.status {
  color: var(--muted);
  font-size: 14px;
  text-align: right;
}

main {
  width: min(1440px, 100%);
  margin: 0 auto;
  padding: 24px clamp(20px, 4vw, 56px) 48px;
}

.filters {
  display: grid;
  grid-template-columns: minmax(200px, 1fr) minmax(200px, 1fr) auto;
  gap: 14px;
  align-items: end;
}

label {
  display: grid;
  gap: 6px;
  color: var(--muted);
  font-size: 13px;
  font-weight: 600;
}

select, input {
  width: 100%;
  min-height: 42px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--panel);
  color: var(--text);
  font: inherit;
  padding: 9px 11px;
}
select:focus, input:focus {
  outline: 3px solid var(--accent-soft);
  border-color: var(--accent);
}

.toggle-group {
  display: inline-flex;
  border: 1px solid var(--line);
  border-radius: 8px;
  overflow: hidden;
}
.toggle-btn {
  min-height: 42px;
  border: none;
  border-radius: 0;
  background: var(--panel);
  color: var(--muted);
  font-size: 13px;
  font-weight: 600;
  padding: 7px 16px;
  cursor: pointer;
  transition: background 0.15s, color 0.15s;
}
.toggle-btn:not(:last-child) {
  border-right: 1px solid var(--line);
}
.toggle-btn.active {
  background: var(--accent);
  color: #fff;
}
.toggle-btn:hover:not(.active) {
  background: var(--accent-soft);
  color: var(--accent);
}

.summary {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 14px;
  margin: 18px 0;
}
.summary > div {
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 16px;
}
.summary span { display: block; font-size: 28px; font-weight: 800; }
.summary small { color: var(--muted); }

.matrix-shell {
  overflow: auto;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: var(--panel);
  box-shadow: var(--shadow);
}

.matrix {
  display: grid;
  min-width: fit-content;
}

/* ── Matrix grid ── */

.matrix-row {
  display: contents;
}

.matrix-cell {
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 48px;
  padding: 6px 10px;
  border-bottom: 1px solid var(--line);
  border-right: 1px solid var(--line);
  font-size: 13px;
  text-align: center;
  position: relative;
  transition: background 0.15s, box-shadow 0.15s;
}

.matrix-cell.corner {
  background: var(--panel);
  font-weight: 700;
  font-size: 12px;
  color: var(--muted);
  text-transform: uppercase;
  position: sticky;
  top: 0;
  left: 0;
  z-index: 3;
  border-top: none;
  border-left: none;
}

.matrix-cell.header-tactic {
  background: color-mix(in srgb, var(--panel) 88%, var(--accent-soft));
  font-weight: 700;
  font-size: 12px;
  color: var(--text);
  text-transform: uppercase;
  position: sticky;
  top: 0;
  z-index: 2;
  border-top: none;
  white-space: nowrap;
  writing-mode: vertical-lr;
  text-orientation: mixed;
  letter-spacing: 1px;
  min-height: 120px;
  padding: 10px 6px;
}

.matrix-cell.header-plan {
  background: color-mix(in srgb, var(--panel) 88%, var(--accent-soft));
  font-weight: 600;
  font-size: 13px;
  color: var(--text);
  position: sticky;
  left: 0;
  z-index: 2;
  border-left: none;
  text-align: left;
  white-space: nowrap;
  justify-content: flex-start;
}

.matrix-cell.covered {
  background: var(--cell-covered-bg);
  color: var(--cell-covered);
  font-weight: 700;
  cursor: pointer;
}
.matrix-cell.covered:hover {
  background: var(--cell-covered-soft);
  box-shadow: inset 0 0 0 2px var(--cell-covered);
}

.matrix-cell.empty {
  background: var(--cell-empty-bg);
  color: var(--cell-dimmed);
  font-size: 11px;
}

.matrix-cell.dimmed {
  opacity: 0.3;
}

.matrix-cell.highlighted {
  box-shadow: inset 0 0 0 2px var(--highlight-border), 0 0 8px var(--highlight-glow);
}

.matrix-cell .count {
  font-size: 15px;
  font-weight: 800;
  line-height: 1;
}

.matrix-cell .alert-label {
  font-size: 10px;
  opacity: 0.7;
  margin-top: 1px;
}

/* ── Tooltip (all alert IDs) ── */

.tooltip {
  position: fixed;
  z-index: 100;
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 12px 16px;
  box-shadow: 0 8px 24px rgba(0,0,0,0.15);
  pointer-events: none;
  max-width: 480px;
  max-height: 360px;
  overflow-y: auto;
  font-size: 13px;
  line-height: 1.4;
}

.tooltip-header {
  margin-bottom: 8px;
  font-size: 14px;
  color: var(--text);
}

.tooltip-count {
  margin-left: 8px;
  font-weight: 700;
  color: var(--cell-covered);
  font-size: 15px;
}

.tooltip-ids {
  display: flex;
  flex-wrap: wrap;
  gap: 4px;
}

.tooltip-id {
  display: inline-block;
  padding: 2px 6px;
  border-radius: 4px;
  background: var(--accent-soft);
  color: var(--accent);
  font-family: "SF Mono", "Cascadia Code", "Consolas", monospace;
  font-size: 11px;
  line-height: 1.4;
  white-space: nowrap;
}

.tooltip-empty {
  margin: 0;
  color: var(--muted);
  font-size: 13px;
}

/* ── Empty state ── */

.empty {
  padding: 32px;
  text-align: center;
  color: var(--muted);
  background: var(--panel);
  border: 1px solid var(--line);
  border-radius: 8px;
}

/* ── Disclaimer dialog ── */

.disclaimer-dialog {
  width: min(640px, 92vw);
  max-height: 85vh;
  padding: 0;
  border: 1px solid var(--line);
  border-radius: 12px;
  background: var(--panel);
  color: var(--text);
  box-shadow: var(--shadow);
}
.disclaimer-dialog::backdrop { background: rgba(13, 17, 23, 0.55); }
.disclaimer-dialog .dialog-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 18px 22px;
  border-bottom: 1px solid var(--line);
}
.disclaimer-dialog h2 { margin: 0; font-size: 20px; }
.disclaimer-dialog .dialog-body { padding: 20px 22px 24px; overflow-y: auto; }
.disclaimer-dialog .dialog-body p { margin: 0 0 16px; color: var(--muted); font-size: 14px; line-height: 1.55; }
.disclaimer-dialog h3 { margin: 0 0 10px; font-size: 13px; font-weight: 700; text-transform: uppercase; color: var(--accent); }
.disclaimer-dialog ul { margin: 0 0 16px; padding-left: 20px; color: var(--muted); font-size: 14px; }
.disclaimer-dialog a { color: var(--accent); text-decoration: none; }
.disclaimer-dialog a:hover { text-decoration: underline; }
.disclaimer-dialog .maintainer { margin-top: 20px; font-size: 13px; }

/* ── Responsive ── */

@media (max-width: 720px) {
  :root { --ui-zoom: 0.92; }
  .app-header { display: block; }
  .header-actions { margin-top: 12px; }
  .status { text-align: left; }
  .filters { grid-template-columns: 1fr; }
  .summary { grid-template-columns: 1fr 1fr; }
}