/*
 * AGENT VISION MODE — site-wide toggleable overlay
 *
 * When body.agent-vision-active is set, the site gets an extra
 * "AI interpretation" layer over the existing design without
 * replacing or hiding any real content.
 *
 * Layers added (in z-index order, bottom → top):
 *   1. Neon outlines on header/nav/main/section/article/form/footer
 *   2. Agent labels (pseudo-elements) attached to semantic blocks
 *   3. HUD grid overlay (full viewport, fixed)
 *   4. Scanline overlay (full viewport, fixed)
 *   5. Agent terminal panel (fixed bottom)
 *   6. Toggle button (always visible, even when inactive)
 *
 * Toggle button + terminal panel both live in this file's styles.
 * Everything respects prefers-reduced-motion.
 */

/* -------------------------------------------------------------
 * Toggle button — fixed bottom-right (desktop), bottom-center (mobile)
 * Always visible, even when agent vision is inactive.
 * ------------------------------------------------------------- */
.agent-vision-toggle {
  position: fixed;
  bottom: 1.2rem;
  right: 1.2rem;
  z-index: 9100;
  padding: 0.7rem 1.1rem;
  background: rgba(1, 12, 5, 0.92);
  border: 1px solid #00ff66;
  color: #e8ffe8;
  font-family: "JetBrains Mono", Consolas, monospace;
  font-size: 0.78rem;
  font-weight: 600;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  cursor: pointer;
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  box-shadow: 0 0 18px rgba(0, 255, 102, 0.25);
  transition:
    background 0.2s ease-out,
    color 0.2s ease-out,
    box-shadow 0.2s ease-out,
    transform 0.2s ease-out;
}

.agent-vision-toggle:hover {
  background: #00ff66;
  color: #010c05;
  box-shadow: 0 0 28px rgba(0, 255, 102, 0.6);
  transform: translateY(-2px);
}

.agent-vision-toggle:focus-visible {
  outline: 2px solid #e8ffe8;
  outline-offset: 3px;
}

body.agent-vision-active .agent-vision-toggle {
  background: #00ff66;
  color: #010c05;
  box-shadow: 0 0 28px rgba(0, 255, 102, 0.55);
}

@media (max-width: 720px) {
  .agent-vision-toggle {
    bottom: 0.9rem;
    right: 50%;
    transform: translateX(50%);
    font-size: 0.7rem;
    padding: 0.6rem 0.9rem;
  }
  .agent-vision-toggle:hover {
    transform: translateX(50%) translateY(-2px);
  }
}

/* -------------------------------------------------------------
 * Agent terminal panel — fixed bottom corner, only visible
 * when agent vision is active. Created by JS.
 * ------------------------------------------------------------- */
.agent-vision-terminal {
  position: fixed;
  bottom: 4.4rem;
  right: 1.2rem;
  width: min(360px, calc(100vw - 2.4rem));
  max-height: 60vh;
  background: rgba(1, 12, 5, 0.94);
  border: 1px solid #00ff66;
  color: #00ff66;
  font-family: "JetBrains Mono", Consolas, monospace;
  font-size: 0.78rem;
  line-height: 1.5;
  z-index: 9099;
  display: none;
  flex-direction: column;
  box-shadow: 0 0 32px rgba(0, 255, 102, 0.3);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
}

body.agent-vision-active .agent-vision-terminal {
  display: flex;
}

.agent-vision-terminal__head {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 0.5rem 0.9rem;
  border-bottom: 1px solid rgba(0, 255, 102, 0.35);
  font-size: 0.68rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: #6dff8e;
}

.agent-vision-terminal__minimize {
  background: transparent;
  border: 1px solid rgba(0, 255, 102, 0.4);
  color: #6dff8e;
  padding: 0.1rem 0.55rem;
  font-family: inherit;
  font-size: 0.78rem;
  line-height: 1;
  cursor: pointer;
}

.agent-vision-terminal__minimize:hover {
  border-color: #00ff66;
  color: #00ff66;
}

.agent-vision-terminal__minimize:focus-visible {
  outline: 2px solid #00ff66;
  outline-offset: 2px;
}

.agent-vision-terminal__lines {
  list-style: none;
  margin: 0;
  padding: 0.8rem 0.9rem;
  overflow-y: auto;
  display: flex;
  flex-direction: column;
  gap: 0.3rem;
}

.agent-vision-terminal__lines li {
  opacity: 0;
  transform: translateX(-4px);
  transition: opacity 0.32s ease-out, transform 0.32s ease-out;
  white-space: normal;
  word-break: break-word;
}

.agent-vision-terminal__lines li.is-visible {
  opacity: 1;
  transform: none;
}

.agent-vision-terminal.is-minimized .agent-vision-terminal__lines {
  display: none;
}

@media (max-width: 720px) {
  .agent-vision-terminal {
    bottom: 4rem;
    right: 0.8rem;
    left: 0.8rem;
    width: auto;
    max-height: 45vh;
  }
}

/* -------------------------------------------------------------
 * Active overlays — only when agent vision is on.
 *
 * Scanline + HUD grid layered via body::before/::after. Both are
 * pointer-events: none so they never block interaction.
 * ------------------------------------------------------------- */
body.agent-vision-active::before {
  content: "";
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 8501;
  background: repeating-linear-gradient(
    180deg,
    transparent 0,
    transparent 3px,
    rgba(0, 255, 102, 0.05) 3px,
    rgba(0, 255, 102, 0.05) 4px
  );
}

body.agent-vision-active::after {
  content: "";
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 8500;
  background-image:
    linear-gradient(to right, rgba(0, 255, 102, 0.07) 1px, transparent 1px),
    linear-gradient(to bottom, rgba(0, 255, 102, 0.07) 1px, transparent 1px);
  background-size: 60px 60px;
}

/* -------------------------------------------------------------
 * Digital rain canvas — the iconic Matrix layer.
 * Created by JS, animated only while body has the active class.
 * Sits between the body bg and content, low opacity so text stays
 * readable.
 * ------------------------------------------------------------- */
.agent-vision-rain {
  position: fixed;
  inset: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
  z-index: 8499;
  opacity: 0;
  transition: opacity 0.6s ease-out;
  mix-blend-mode: screen;
}

body.agent-vision-active .agent-vision-rain {
  opacity: 0.4;
}

/* -------------------------------------------------------------
 * Boot flash — quick green sweep when activation toggles on.
 * Triggered by JS adding .agent-vision-booting briefly.
 * ------------------------------------------------------------- */
.agent-vision-flash {
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 9098;
  background: linear-gradient(
    180deg,
    rgba(0, 255, 102, 0) 0%,
    rgba(0, 255, 102, 0.35) 50%,
    rgba(0, 255, 102, 0) 100%
  );
  transform: translateY(-100%);
  opacity: 0;
}

body.agent-vision-booting .agent-vision-flash {
  animation: agentVisionFlash 700ms ease-out forwards;
}

@keyframes agentVisionFlash {
  0% { transform: translateY(-100%); opacity: 0; }
  20% { opacity: 1; }
  100% { transform: translateY(120%); opacity: 0; }
}

/* -------------------------------------------------------------
 * Text glow + glitch flicker on labels when active
 * ------------------------------------------------------------- */
body.agent-vision-active h1,
body.agent-vision-active h2,
body.agent-vision-active h3,
body.agent-vision-active .nav-menu__item,
body.agent-vision-active .status-bar,
body.agent-vision-active p,
body.agent-vision-active span {
  text-shadow: 0 0 6px rgba(0, 255, 102, 0.35);
}

body.agent-vision-active header::before,
body.agent-vision-active nav::before,
body.agent-vision-active main::before,
body.agent-vision-active section::before,
body.agent-vision-active article::before,
body.agent-vision-active form::before,
body.agent-vision-active footer::before {
  animation: avLabelGlitch 3.5s infinite;
}

@keyframes avLabelGlitch {
  0%, 96%, 100% { opacity: 1; transform: translate(2px, -100%); }
  97% { opacity: 0.3; transform: translate(4px, -100%); }
  98% { opacity: 1; transform: translate(-1px, -100%); }
  99% { opacity: 0.7; transform: translate(2px, -100%); }
}

/* -------------------------------------------------------------
 * Neon outlines on semantic blocks. Outlines (not borders) so
 * they don't shift any existing layout.
 * ------------------------------------------------------------- */
body.agent-vision-active header,
body.agent-vision-active nav,
body.agent-vision-active main,
body.agent-vision-active section,
body.agent-vision-active article,
body.agent-vision-active footer,
body.agent-vision-active form {
  outline: 1px dashed rgba(0, 255, 102, 0.4);
  outline-offset: 2px;
  position: relative;
}

/* -------------------------------------------------------------
 * Agent labels — small pseudo-element tags attached to each
 * semantic block. aria-hidden via CSS pseudo (decorative only).
 * ------------------------------------------------------------- */
body.agent-vision-active header::before {
  content: "[ TRUST_HEADER ]";
}
body.agent-vision-active nav::before {
  content: "[ CRAWL_PATH ]";
}
body.agent-vision-active main::before {
  content: "[ CONTENT_GRAPH ]";
}
body.agent-vision-active section::before {
  content: "[ SEMANTIC_BLOCK ]";
}
body.agent-vision-active article::before {
  content: "[ KNOWLEDGE_NODE ]";
}
body.agent-vision-active form::before {
  content: "[ TRANSMISSION_ENDPOINT ]";
}
body.agent-vision-active footer::before {
  content: "[ TRUST_ANCHOR ]";
}

body.agent-vision-active header::before,
body.agent-vision-active nav::before,
body.agent-vision-active main::before,
body.agent-vision-active section::before,
body.agent-vision-active article::before,
body.agent-vision-active form::before,
body.agent-vision-active footer::before {
  position: absolute;
  top: 0;
  left: 0;
  transform: translate(2px, -100%);
  background: #010c05;
  color: #00ff66;
  font-family: "JetBrains Mono", Consolas, monospace;
  font-size: 0.6rem;
  font-weight: 600;
  letter-spacing: 0.18em;
  padding: 0.12rem 0.5rem;
  border: 1px solid rgba(0, 255, 102, 0.5);
  white-space: nowrap;
  pointer-events: none;
  z-index: 8502;
}

/* h1 — small suffix tag inline, doesn't break layout */
body.agent-vision-active h1::after {
  content: " //PRIMARY_SIGNAL";
  color: rgba(0, 255, 102, 0.55);
  font-size: 0.32em;
  letter-spacing: 0.2em;
  vertical-align: super;
  font-weight: 400;
}

/* a / button — minimal inline tags, kept subtle so they don't
   clutter the page or break inline flow. */
body.agent-vision-active a:not(.nav-menu__item):not(.status-bar__link):not(.agent-vision-toggle)::after {
  content: " //AL";
  color: rgba(0, 255, 102, 0.5);
  font-size: 0.7em;
  letter-spacing: 0.1em;
}

body.agent-vision-active .site-footer__legal a::after {
  content: " //" attr(data-agent-vision);
  margin-left: 0.45rem;
  color: rgba(232, 255, 232, 0.72);
  font-size: 0.68em;
  letter-spacing: 0.04em;
  text-transform: none;
}

body.agent-vision-active button:not(.agent-vision-toggle):not(.agent-vision-terminal__minimize)::after {
  content: " //AE";
  color: rgba(0, 255, 102, 0.5);
  font-size: 0.7em;
  letter-spacing: 0.1em;
  margin-left: 0.25rem;
}

/* -------------------------------------------------------------
 * Endpoint traversal layer
 *
 * Markers attached to specific elements on each page, plus a
 * "traveler" dot that hops between them in sequence to simulate
 * an agent moving through endpoints. JS injects these into <body>
 * at document coordinates (top/left includes scrollY/scrollX).
 * ------------------------------------------------------------- */
.agent-vision-endpoint {
  position: absolute;
  z-index: 8503;
  pointer-events: none;
  transform: translate(-50%, -50%);
  opacity: 0;
  transition: opacity 0.4s ease-out;
}

body.agent-vision-active .agent-vision-endpoint {
  opacity: 1;
}

.agent-vision-endpoint__dot {
  width: 14px;
  height: 14px;
  border-radius: 50%;
  background: transparent;
  border: 1.5px solid #00ff66;
  box-shadow: 0 0 8px rgba(0, 255, 102, 0.55);
  position: relative;
}

.agent-vision-endpoint.is-visited .agent-vision-endpoint__dot {
  background: #00ff66;
  box-shadow: 0 0 18px rgba(0, 255, 102, 0.8);
}

.agent-vision-endpoint.is-active .agent-vision-endpoint__dot {
  background: #e8ffe8;
  box-shadow: 0 0 26px rgba(232, 255, 232, 1);
  animation: avEndpointPulse 0.8s ease-out 3;
}

@keyframes avEndpointPulse {
  0%, 100% { transform: scale(1); }
  50% { transform: scale(1.6); }
}

.agent-vision-endpoint__label {
  position: absolute;
  left: 18px;
  top: -2px;
  white-space: nowrap;
  font-family: "JetBrains Mono", Consolas, monospace;
  font-size: 0.65rem;
  letter-spacing: 0.18em;
  color: #00ff66;
  background: rgba(1, 12, 5, 0.85);
  border: 1px solid rgba(0, 255, 102, 0.5);
  padding: 0.15rem 0.5rem;
  text-shadow: 0 0 6px rgba(0, 255, 102, 0.55);
}

/* Traveler — scanning reticle / crosshair SVG. Larger + more
   visible than the previous dot; rotates slowly while moving. */
.agent-vision-traveler {
  position: absolute;
  z-index: 8504;
  width: 44px;
  height: 44px;
  transform: translate(-50%, -50%);
  pointer-events: none;
  opacity: 0;
  filter:
    drop-shadow(0 0 14px #00ff66)
    drop-shadow(0 0 28px rgba(0, 255, 102, 0.55))
    drop-shadow(0 0 52px rgba(0, 255, 102, 0.35));
  transition:
    top 1.1s cubic-bezier(0.65, 0, 0.35, 1),
    left 1.1s cubic-bezier(0.65, 0, 0.35, 1),
    opacity 0.4s ease-out;
}

.agent-vision-traveler svg {
  width: 100%;
  height: 100%;
  display: block;
  animation: avTravelerSpin 5s linear infinite;
  transform-origin: 50% 50%;
}

@keyframes avTravelerSpin {
  from { transform: rotate(0deg); }
  to { transform: rotate(360deg); }
}

body.agent-vision-active .agent-vision-traveler {
  opacity: 1;
}

/* -------------------------------------------------------------
 * Target element scanning + capture states.
 *
 * When the traveler reaches an endpoint, the target element gets
 * .av-target-active for ~800ms (scanline sweep). Then it switches
 * to .av-target-captured (persistent green outline showing that
 * the agent has "memorized" this element).
 * ------------------------------------------------------------- */
.av-target-active {
  position: relative;
  outline: 1.5px solid rgba(0, 255, 102, 0.8);
  outline-offset: 4px;
  z-index: 1;
}

.av-target-active::before {
  content: "";
  position: absolute;
  inset: -2px;
  pointer-events: none;
  background: linear-gradient(
    180deg,
    transparent 0%,
    rgba(0, 255, 102, 0.25) 45%,
    rgba(232, 255, 232, 0.5) 50%,
    rgba(0, 255, 102, 0.25) 55%,
    transparent 100%
  );
  background-size: 100% 30%;
  background-repeat: no-repeat;
  background-position: 0% -30%;
  animation: avScanSweep 0.85s ease-out forwards;
  z-index: 8505;
  mix-blend-mode: screen;
}

@keyframes avScanSweep {
  from { background-position: 0% -30%; }
  to { background-position: 0% 130%; }
}

.av-target-active::after {
  content: "READING";
  position: absolute;
  top: -22px;
  right: -2px;
  background: #00ff66;
  color: #010c05;
  font-family: "JetBrains Mono", Consolas, monospace;
  font-size: 0.62rem;
  font-weight: 700;
  letter-spacing: 0.18em;
  padding: 0.18rem 0.5rem;
  pointer-events: none;
  z-index: 8506;
  animation: avBadgeFade 0.9s ease-out forwards;
}

@keyframes avBadgeFade {
  0% { opacity: 0; transform: translateY(4px); }
  20% { opacity: 1; transform: none; }
  100% { opacity: 1; transform: none; }
}

.av-target-captured {
  outline: 1px solid rgba(0, 255, 102, 0.35);
  outline-offset: 4px;
}

/* SVG path overlay between endpoints (drawn by JS) */
.agent-vision-path {
  position: absolute;
  z-index: 8502;
  pointer-events: none;
  top: 0;
  left: 0;
  overflow: visible;
  opacity: 0;
  transition: opacity 0.4s ease-out;
}

body.agent-vision-active .agent-vision-path {
  opacity: 1;
}

.agent-vision-path path {
  fill: none;
  stroke: rgba(0, 255, 102, 0.55);
  stroke-width: 1;
  stroke-dasharray: 4 6;
  filter: drop-shadow(0 0 4px rgba(0, 255, 102, 0.6));
}

/* -------------------------------------------------------------
 * Noise layer — un-captured text in <main> is scrambled to look
 * like background code. Class added by JS to each text node's
 * parent. !important overrides existing styles cleanly.
 * ------------------------------------------------------------- */
.av-noise {
  color: rgba(0, 255, 102, 0.32) !important;
  text-shadow: none !important;
  font-family: "JetBrains Mono", Consolas, monospace !important;
  font-weight: 400 !important;
  letter-spacing: 0.04em !important;
  transition: color 0.3s ease-out;
}

/* When a target gets captured/active, drop the noise look on its
   own subtree so it pops as "decoded" against the noise. */
.av-target-active.av-noise,
.av-target-active .av-noise,
.av-target-captured.av-noise,
.av-target-captured .av-noise {
  color: var(--text-bright, #e8ffe8) !important;
  text-shadow: 0 0 8px rgba(0, 255, 102, 0.55) !important;
}

/* -------------------------------------------------------------
 * Reduced motion — kill the line reveal stagger
 * ------------------------------------------------------------- */
@media (prefers-reduced-motion: reduce) {
  .agent-vision-toggle {
    transition: none;
  }
  .agent-vision-toggle:hover {
    transform: none;
  }
  @media (max-width: 720px) {
    .agent-vision-toggle:hover {
      transform: translateX(50%);
    }
  }
  .agent-vision-terminal__lines li {
    transition: none;
  }
  body.agent-vision-active header::before,
  body.agent-vision-active nav::before,
  body.agent-vision-active main::before,
  body.agent-vision-active section::before,
  body.agent-vision-active article::before,
  body.agent-vision-active form::before,
  body.agent-vision-active footer::before {
    animation: none;
  }
  body.agent-vision-booting .agent-vision-flash {
    animation: none;
  }
  .agent-vision-rain {
    display: none;
  }
  .agent-vision-traveler {
    transition: opacity 0.4s ease-out;
  }
  .agent-vision-traveler svg {
    animation: none;
  }
  .agent-vision-endpoint.is-active .agent-vision-endpoint__dot {
    animation: none;
  }
}