/* Executive InfoSec — interactive slide layer. Theme-aware via existing CSS vars. */
.si-hidden { opacity: 0; transform: translateY(10px); pointer-events: none;
  transition: opacity .35s ease, transform .35s ease; }
.si-shown  { opacity: 1; transform: none;
  transition: opacity .35s ease, transform .35s ease; }
[data-reveal] { transition: opacity .35s ease, transform .35s ease; }

/* Audience poll */
.poll { border: 1px solid var(--border); border-radius: 10px; padding: 16px 18px;
  max-width: 720px; margin: 14px 0; background: var(--card-bg, rgba(255,255,255,.02)); }
.poll .si-q { font-weight: 600; margin: 0 0 12px; }
.poll .si-opt { display: block; width: 100%; text-align: left; margin: 6px 0;
  padding: 10px 14px; border: 1px solid var(--border); border-radius: 8px;
  background: none; color: var(--text); cursor: pointer; font-size: .95rem;
  transition: all .15s; }
.poll .si-opt:hover { border-color: var(--accent, #58a6ff); }
.poll .si-opt.si-chosen { border-color: var(--accent, #58a6ff); }
.poll .si-opt.si-correct { border-color: #2ea043; background: #2ea04322; }
.poll .si-opt.si-wrong { border-color: #d1242f; background: #d1242f22; }
.poll .si-poll-reveal { margin-top: 12px; padding-top: 12px; border-top: 1px dashed var(--border);
  color: var(--text-muted); }

/* Live timer */
.timer { display: inline-flex; align-items: center; gap: 14px; padding: 10px 16px;
  border: 1px solid var(--border); border-radius: 10px; margin: 12px 0; }
.timer .si-timer-face { font-variant-numeric: tabular-nums; font-size: 1.8rem; font-weight: 700;
  letter-spacing: 1px; }
.timer .si-timer-ctrls { display: inline-flex; gap: 6px; }
.timer .si-timer-ctrl { padding: 4px 12px; border: 1px solid var(--border); border-radius: 6px;
  background: none; color: var(--text-muted); cursor: pointer; }
.timer .si-timer-ctrl:hover { color: var(--text); border-color: var(--accent, #58a6ff); }
.timer.si-timer-done { border-color: #d1242f; }
.timer.si-timer-done .si-timer-face { color: #d1242f; animation: si-flash 1s steps(2) infinite; }
@keyframes si-flash { 50% { opacity: .35; } }

/* Animated-diagram helpers (kill-chain / aggregation / cascade) */
.si-diagram { display: flex; flex-wrap: wrap; gap: 10px; align-items: center; max-width: 760px; }
.si-node { border: 1px solid var(--border); border-radius: 8px; padding: 8px 12px;
  background: var(--card-bg, rgba(255,255,255,.02)); }
.si-arrow { color: var(--text-muted); font-size: 1.4rem; }
.si-node.si-hot { border-color: #d1242f; background: #d1242f1a; }