/**
 * Intrusion System Styles
 * Progressive media intrusion — from ambient to overwhelming.
 * Levels: 0 (nothing) → 1 (ticker) → 2 (overlays) → 3 (aggressive) → 4 (takeover)
 */

.intrusion-layer {
  pointer-events: none;
}
.intrusion-layer > * {
  pointer-events: auto;
}

/* --- Ticker (Level 1+) --- */
.intrusion-ticker {
  position: fixed;
  top: 70px; /* below timeline scrubber */
  left: 0;
  right: 0;
  z-index: 90;
  background: #c0392b;
  color: white;
  font-family: "SF Mono", "Fira Mono", monospace;
  font-size: 0.8rem;
  font-weight: 600;
  overflow: hidden;
  height: 28px;
  display: flex;
  align-items: center;
}

.ticker-content {
  display: flex;
  align-items: center;
  white-space: nowrap;
  animation: ticker-scroll 30s linear infinite;
}

.ticker-text {
  padding: 0 2rem;
}

@keyframes ticker-scroll {
  0% { transform: translateX(100vw); }
  100% { transform: translateX(-100%); }
}

/* --- Overlay (Level 2+) --- */
.intrusion-overlay {
  position: fixed;
  top: 100px;
  right: 0;
  width: min(380px, 85vw);
  max-height: 60vh;
  z-index: 80;
  background: white;
  border-left: 4px solid #c0392b;
  box-shadow: -4px 0 20px rgba(0,0,0,0.15);
  padding: 1.25rem;
  overflow-y: auto;
  transform: translateX(100%);
  transition: transform 0.4s ease;
}
.intrusion-overlay.visible {
  transform: translateX(0);
}

.intrusion-dismiss {
  position: absolute;
  top: 0.5rem;
  right: 0.75rem;
  background: none;
  border: none;
  font-size: 1.5rem;
  cursor: pointer;
  opacity: 0.5;
  line-height: 1;
}
.intrusion-dismiss:hover { opacity: 1; }

.overlay-content {
  font-size: 0.9rem;
  line-height: 1.5;
}

/* --- Full-screen Takeover (Level 4) --- */
.intrusion-takeover {
  position: fixed;
  inset: 0;
  z-index: 200;
  background: rgba(0,0,0,0.92);
  color: white;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 2rem;
}

.takeover-content {
  max-width: 640px;
  text-align: center;
  font-size: 1.25rem;
  line-height: 1.6;
}
.takeover-content h2 {
  font-size: 2.5rem;
  text-transform: uppercase;
  letter-spacing: 0.15em;
  margin-bottom: 1.5rem;
  color: #e74c3c;
}

.takeover-dismiss {
  margin-top: 3rem;
  padding: 0.75em 2em;
  background: none;
  border: 2px solid rgba(255,255,255,0.4);
  color: rgba(255,255,255,0.6);
  font: inherit;
  font-size: 0.85rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  cursor: pointer;
  transition: all 0.2s ease;
}
.takeover-dismiss:hover {
  border-color: white;
  color: white;
}

/* --- Intrusion Banners (injected inline at Level 3) --- */
.intrusion-banner {
  background: #c0392b;
  color: white;
  padding: 0.75rem 1.25rem;
  margin: 1.5rem -1.5rem;
  font-family: "SF Mono", monospace;
  font-size: 0.85rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  animation: banner-flash 2s ease-in-out;
}

@keyframes banner-flash {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.7; }
}

/* --- Level-specific behavior --- */

/* Level 0: nothing visible */
[data-intrusion="0"] .intrusion-ticker,
[data-intrusion="0"] .intrusion-overlay,
[data-intrusion="0"] .intrusion-takeover {
  display: none !important;
}

/* Level 1: only ticker, subtle */
[data-intrusion="1"] .intrusion-overlay,
[data-intrusion="1"] .intrusion-takeover {
  display: none !important;
}
[data-intrusion="1"] .intrusion-ticker {
  background: #555;
  height: 24px;
  font-size: 0.7rem;
}

/* Level 2: ticker + overlay */
[data-intrusion="2"] .intrusion-takeover {
  display: none !important;
}
[data-intrusion="2"] .intrusion-ticker {
  background: #8b1a1a;
}

/* Level 3: aggressive, all except takeover */
[data-intrusion="3"] .intrusion-takeover {
  display: none !important;
}
[data-intrusion="3"] .intrusion-ticker {
  height: 32px;
  font-size: 0.85rem;
  background: #8b1a1a;
  font-weight: 800;
}
[data-intrusion="3"] .intrusion-overlay {
  width: min(450px, 90vw);
  border-left-width: 6px;
}

/* Level 4: everything, including takeover */
[data-intrusion="4"] .intrusion-ticker {
  background: #660000;
  height: 36px;
  font-size: 0.9rem;
}

/* --- Censorship gaps in narrative text (Level 3+) --- */
[data-intrusion="3"] .redacted,
[data-intrusion="4"] .redacted {
  background: #1a1a1a;
  color: transparent;
  position: relative;
  display: inline-block;
  min-width: 4em;
}
[data-intrusion="3"] .redacted::before,
[data-intrusion="4"] .redacted::before {
  content: "[CONTENT UNAVAILABLE ON CLEAN NET]";
  position: absolute;
  left: 0;
  top: 50%;
  transform: translateY(-50%);
  font-size: 0.5rem;
  color: #666;
  letter-spacing: 0.05em;
  font-family: monospace;
  white-space: nowrap;
}