/* Landing dashboard — Phase C.1.
 *
 * Layout: a 7-up responsive grid of stat cards. Mobile-first
 * (360 / 375 / 414 / 768 / 1024). Touch targets ≥ 44px. No
 * horizontal scroll. All colors are CSS variables so the
 * light theme can override them via the [data-theme="light"]
 * attribute on <html>.
 */

.landing {
  display: flex;
  flex-direction: column;
  gap: 20px;
}

/* --- Hero --- */
.landing-hero {
  padding: 4px 0 8px;
}
.landing-hero__title {
  margin: 0 0 4px;
  font-size: 24px;
  font-weight: 600;
  color: var(--fg);
}
.landing-hero__lede {
  margin: 0;
  color: var(--fg-muted);
  font-size: 14px;
}

/* --- Stat grid --- */
.landing-stats {
  display: grid;
  grid-template-columns: 1fr;
  gap: 12px;
}
@media (min-width: 600px) {
  .landing-stats {
    grid-template-columns: repeat(2, 1fr);
    gap: 14px;
  }
}
@media (min-width: 900px) {
  .landing-stats {
    grid-template-columns: repeat(3, 1fr);
    gap: 16px;
  }
}
@media (min-width: 1200px) {
  .landing-stats {
    grid-template-columns: repeat(4, 1fr);
  }
}

/* --- Card --- */
.stat-card {
  background: var(--bg-elev);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 16px 18px;
  display: flex;
  flex-direction: column;
  gap: 8px;
  min-width: 0; /* prevent grid blowout on long content */
}
.stat-card__title {
  margin: 0;
  font-size: 12px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  color: var(--fg-muted);
}
.stat-card__big {
  margin: 0;
  display: flex;
  align-items: baseline;
  gap: 6px;
  flex-wrap: wrap;
}
.stat-card__num {
  font-size: 32px;
  font-weight: 700;
  line-height: 1.1;
  color: var(--fg);
  font-variant-numeric: tabular-nums;
}
.stat-card__unit {
  font-size: 13px;
  color: var(--fg-muted);
}
.stat-card__sub {
  margin: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
  color: var(--fg-muted);
  font-size: 12px;
}
.stat-card__sub--note {
  font-style: normal;
  font-size: 11px;
  line-height: 1.4;
}

.stat-card__chip {
  display: inline-block;
  padding: 2px 8px;
  border: 1px solid var(--border);
  border-radius: 999px;
  background: var(--bg-elev-2);
  color: var(--fg);
  font-size: 11px;
  line-height: 1.5;
  white-space: nowrap;
}
.stat-card__chip--ok {
  border-color: var(--good);
  color: var(--good);
}
.stat-card__chip--warn {
  border-color: var(--warn);
  color: var(--warn);
}
.stat-card__chip--danger {
  border-color: var(--danger);
  color: var(--danger);
}
.stat-card__chip--offline {
  border-color: var(--danger);
  color: var(--danger);
}

.stat-card__breakdown {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 4px;
  font-size: 12px;
}
.stat-card__breakdown li {
  display: flex;
  align-items: center;
  gap: 8px;
  color: var(--fg);
}
.stat-card__count {
  margin-left: auto;
  color: var(--fg-muted);
  font-variant-numeric: tabular-nums;
}

/* --- Footer --- */
.landing-footer {
  padding: 16px 0 0;
  color: var(--fg-muted);
  font-size: 12px;
  text-align: center;
}
.landing-footer code {
  background: var(--bg-elev-2);
  border: 1px solid var(--border);
  padding: 1px 6px;
  border-radius: 3px;
  font-size: 11px;
}

/* --- Agent health sub-card (Phase C.6) ---
 *
 * Each agent (ron, dave, techsupport) gets a sub-card with:
 *   - status emoji (🟢 alive / 🟡 stale / 🔴 dead)
 *   - agent name + container id
 *   - relative time since last heartbeat
 *   - collapsible metadata json
 *
 * The sub-cards stack vertically inside the parent stat-card
 * to keep the layout simple (a horizontal layout would force
 * the metadata details to be tiny on mobile).
 */
.stat-card--agents {
  /* No special layout vs other stat-cards. */
}
.stat-card__breakdown--agents {
  display: flex;
  flex-direction: column;
  gap: 8px;
  padding: 0;
  margin: 8px 0 0;
  list-style: none;
}
.agent-subcard {
  display: flex;
  flex-direction: column;
  gap: 4px;
  padding: 8px 10px;
  background: var(--bg-elev-2);
  border: 1px solid var(--border);
  border-radius: 6px;
  border-left-width: 3px;
}
.agent-subcard--alive {
  border-left-color: var(--ok-border, rgba(40, 160, 80, 0.6));
}
.agent-subcard--stale {
  border-left-color: var(--warn-border, rgba(255, 180, 0, 0.6));
}
.agent-subcard--dead {
  border-left-color: var(--danger-border, rgba(220, 50, 50, 0.6));
}
.agent-subcard--unknown {
  border-left-color: var(--border);
}
.agent-subcard__head {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 13px;
}
.agent-subcard__emoji {
  font-size: 14px;
  line-height: 1;
}
.agent-subcard__name {
  color: var(--fg);
  font-weight: 600;
}
.agent-subcard__container {
  color: var(--fg-muted);
  font-family: var(--mono, ui-monospace, SFMono-Regular, Menlo, monospace);
  font-size: 11px;
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 3px;
  padding: 1px 5px;
}
.agent-subcard__status {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 12px;
  color: var(--fg-muted);
}
.agent-subcard__class {
  display: inline-block;
  padding: 1px 6px;
  border-radius: 999px;
  font-size: 11px;
  font-weight: 600;
  text-transform: uppercase;
  border: 1px solid var(--border);
}
.agent-subcard__class--alive {
  background: var(--ok-bg, rgba(40, 160, 80, 0.12));
  color: var(--ok-fg, #1a7a3a);
  border-color: var(--ok-border, rgba(40, 160, 80, 0.4));
}
.agent-subcard__class--stale {
  background: var(--warn-bg, rgba(255, 180, 0, 0.12));
  color: var(--warn-fg, #b88100);
  border-color: var(--warn-border, rgba(255, 180, 0, 0.4));
}
.agent-subcard__class--dead {
  background: var(--danger-bg, rgba(220, 50, 50, 0.08));
  color: var(--danger-fg, #b03030);
  border-color: var(--danger-border, rgba(220, 50, 50, 0.3));
}
.agent-subcard__class--unknown {
  background: var(--bg-elev-2);
  color: var(--fg-muted);
}
.agent-subcard__time {
  color: var(--fg-muted);
  font-variant-numeric: tabular-nums;
}
.agent-subcard__details {
  margin-top: 2px;
  font-size: 12px;
}
.agent-subcard__details-toggle {
  cursor: pointer;
  color: var(--accent);
  font-size: 11px;
  user-select: none;
}
.agent-subcard__metadata {
  display: block;
  margin: 4px 0 0;
  padding: 6px 8px;
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 4px;
  font-family: var(--mono, ui-monospace, SFMono-Regular, Menlo, monospace);
  font-size: 11px;
  color: var(--fg-muted);
  white-space: pre-wrap;
  word-break: break-word;
  max-height: 200px;
  overflow: auto;
}