/* ─────────────────────────────────────────────────────────────
   Hero chat (SPARK).

   Two parts:
   - #hero-eye-speech (.hero-eye-speech*): the reply overlay, living
     inside .hero-blobs -- the same visual container as the 3D eye
     (js/hero-eye-scene.js) -- so the reply reads as the eye speaking,
     not a chat bubble off to the side. Loads on every device: on
     mobile it just overlays the CSS blob canvas instead of the 3D
     scene, same markup/JS either way.
   - .hero-chat (the input row): stays in the hero's right panel,
     just the typing box.

   Dark/cyan to match the hero HUD, monospace for the technical bits.
───────────────────────────────────────────────────────────── */

.hero-eye-speech {
  --speech-accent: #39ffc4;
  position: absolute;
  left: 16px;
  right: 16px;
  bottom: 44px; /* clears the HUD equalizer bar (bottom:16px, ~18px tall) when the 3D scene is loaded */
  z-index: 2;
  pointer-events: none;
  font-family: var(--font-mono);
  opacity: 0;
  transform: translateY(6px);
  transition: opacity 0.3s ease, transform 0.3s ease;
}
.hero-eye-speech.is-active { opacity: 1; transform: translateY(0); }

.hero-eye-speech-query {
  font-size: 0.62rem;
  letter-spacing: 0.05em;
  color: rgba(57, 255, 196, 0.55);
  margin: 0 0 0.35rem;
  text-transform: uppercase;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.hero-eye-speech-reply {
  font-size: 0.78rem;
  line-height: 1.55;
  color: var(--speech-accent);
  margin: 0;
  text-shadow: 0 0 12px rgba(57, 255, 196, 0.22);
  background: linear-gradient(to top, rgba(5, 7, 10, 0.88) 65%, transparent);
  padding: 0.5rem 0.6rem;
  border-radius: 3px;
  max-height: 200px; /* safeguard against an unusually long reply pushing past the container */
  overflow-y: auto;
  pointer-events: auto; /* the rest of .hero-eye-speech is pointer-events:none; allow scrolling a long reply */
}
.hero-eye-speech-reply:empty { padding: 0; background: none; }
.hero-eye-speech-reply--error { color: #ff6a6a; text-shadow: none; }

.hero-eye-speech-reply.is-typing::after {
  content: '';
  display: inline-block;
  width: 0.5em;
  height: 1em;
  background: currentColor;
  vertical-align: text-bottom;
  margin-left: 2px;
  animation: hero-chat-blink 1s steps(1) infinite;
}
@keyframes hero-chat-blink { 50% { opacity: 0; } }

/* CTA button -- only ever shown after the full reply text is in place
   (see js/hero-chat.js), so it never appears mid-stream. */
.hero-eye-cta {
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
  margin-top: 0.55rem;
  padding: 0.45rem 0.85rem;
  border: 1px solid var(--speech-accent);
  border-radius: 3px;
  background: rgba(57, 255, 196, 0.08);
  color: var(--speech-accent);
  font-family: var(--font-mono);
  font-size: 0.68rem;
  font-weight: 600;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  text-decoration: none;
  pointer-events: auto; /* .hero-eye-speech itself is pointer-events:none */
  transition: background 0.2s ease, transform 0.15s ease;
}
.hero-eye-cta::after { content: '\2192'; }
.hero-eye-cta:hover { background: rgba(57, 255, 196, 0.18); transform: translateX(2px); }
.hero-eye-cta[hidden] { display: none; }

@media (max-width: 767px) {
  .hero-eye-speech { bottom: 12px; } /* no HUD eq bar on mobile (3D scene never loads there) */
}

/* ── Mobile lite eye (js/hero-eye-lite.js) ────────────────────
   CSS/SVG only, no WebGL -- state changes just toggle classes on
   #hero-eye-lite and let these keyframes do the work, so it stays
   cheap on low/mid-range phones. Hidden at the desktop breakpoint
   (the Three.js scene takes over there); js/hero-eye-lite.js also
   no-ops past that breakpoint, so this is belt-and-suspenders. */
.hero-eye-lite {
  display: none;
  position: absolute;
  top: 14%;
  left: 50%;
  transform: translateX(-50%);
  width: 20vw;
  max-width: 88px;
  min-width: 56px;
  z-index: 1;
  pointer-events: none;
}

@media (max-width: 767px) {
  .hero-eye-lite { display: block; }
}

.hero-eye-lite-svg { display: block; width: 100%; height: auto; overflow: visible; }

.hel-ring { fill: none; stroke: #1a8f6e; stroke-width: 1.5; opacity: 0.55; }
.hel-ring--mid { stroke: #39ffc4; opacity: 0.4; }
.hel-pupil { fill: #f8f5f2; opacity: 0.9; transform-origin: 50% 50%; }
.hel-lid { fill: #05070a; }
.hel-lid--top { transform: scaleY(0); transform-origin: 50% 0%; }
.hel-lid--bottom { transform: scaleY(0); transform-origin: 50% 100%; }

/* idle -- slow ambient breathing */
.hero-eye-lite.is-idle .hel-pupil { animation: hel-breathe 3.6s ease-in-out infinite; }
.hero-eye-lite.is-idle .hel-ring--mid { animation: hel-glow 3.6s ease-in-out infinite; }

/* listening -- tighter/quicker breathing, brighter rings */
.hero-eye-lite.is-listening .hel-pupil { animation: hel-breathe 1.5s ease-in-out infinite; }
.hero-eye-lite.is-listening .hel-ring--mid { animation: hel-glow 1.5s ease-in-out infinite; opacity: 0.65; }

/* thinking -- nervous flicker */
.hero-eye-lite.is-thinking .hel-pupil { animation: hel-jitter 0.6s steps(4) infinite; }
.hero-eye-lite.is-thinking .hel-ring--outer,
.hero-eye-lite.is-thinking .hel-ring--mid { animation: hel-glow 0.6s ease-in-out infinite; }

/* speaking -- brighter, rotating mid ring; per-token kicks via .is-kicked */
.hero-eye-lite.is-speaking .hel-ring--mid {
  animation: hel-rotate 5s linear infinite, hel-glow 1.8s ease-in-out infinite;
  opacity: 0.7;
}
.hel-pupil.is-kicked { animation: hel-kick 0.3s ease-out; }

/* deliberate end-of-reply blink -- independent of mode, layers on top */
.hero-eye-lite.is-blinking .hel-lid { animation: hel-blink 0.36s ease; }

@keyframes hel-breathe {
  0%, 100% { transform: scale(1); }
  50% { transform: scale(1.12); }
}
@keyframes hel-glow {
  0%, 100% { opacity: 0.35; }
  50% { opacity: 0.75; }
}
@keyframes hel-jitter {
  0%, 100% { transform: scale(1) translate(0, 0); }
  25% { transform: scale(0.94) translate(0.6px, -0.4px); }
  50% { transform: scale(1.05) translate(-0.5px, 0.5px); }
  75% { transform: scale(0.97) translate(0.4px, 0.3px); }
}
@keyframes hel-kick {
  0% { transform: scale(1); }
  35% { transform: scale(1.35); }
  100% { transform: scale(1); }
}
@keyframes hel-rotate {
  from { transform: rotate(0deg); }
  to { transform: rotate(360deg); }
}
@keyframes hel-blink {
  0%, 100% { transform: scaleY(0); }
  50% { transform: scaleY(1); }
}

/* ── Input row (hero-content, right panel) ───────────────────── */

.hero-chat {
  --chat-accent: #39ffc4;
  width: 100%;
  max-width: 46ch;
  margin-top: 0.75rem;
  border: 1px solid rgba(57, 255, 196, 0.22);
  background: rgba(248, 245, 242, 0.03);
  border-radius: 4px;
}

.hero-chat-form {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.6rem 0.9rem;
}

.hero-chat-prompt {
  font-family: var(--font-mono);
  color: var(--chat-accent);
  opacity: 0.7;
  font-size: 0.85rem;
}

.hero-chat-input {
  flex: 1 1 auto;
  background: transparent;
  border: none;
  outline: none;
  color: var(--cream);
  font-family: var(--font-ui);
  font-size: 0.85rem;
  min-width: 0;
}
.hero-chat-input::placeholder { color: rgba(248, 245, 242, 0.35); }

.hero-chat-send {
  background: transparent;
  border: none;
  color: var(--chat-accent);
  font-size: 1rem;
  line-height: 1;
  cursor: pointer;
  padding: 0.2rem 0.3rem;
  opacity: 0.75;
  transition: opacity 0.2s;
}
.hero-chat-send:hover { opacity: 1; }
.hero-chat-send:disabled { opacity: 0.25; cursor: default; }

.hero-chat-hint {
  font-family: var(--font-mono);
  font-size: 0.62rem;
  letter-spacing: 0.02em;
  color: rgba(248, 245, 242, 0.32);
  padding: 0 0.9rem 0.7rem;
  margin: 0;
}

@media (max-width: 767px) {
  .hero-chat { max-width: none; }

  /* >=16px stops iOS Safari auto-zooming the page when the input gets
     focus; the send button grows to a real touch target (~44px, the
     usual minimum) instead of a small hit area needing a precise tap. */
  .hero-chat-input { font-size: 16px; }
  .hero-chat-form { padding: 0.4rem 0.5rem 0.4rem 0.9rem; }
  .hero-chat-send {
    font-size: 1.2rem;
    min-width: 44px;
    min-height: 44px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
  }
}