/* ============================================================
   CHAT HERO TILE
   ============================================================ */

/* Fixed frame. An explicit height (rather than a min/max range) means the
   tile contributes exactly that much to grid row sizing, so the panel
   never resizes as the conversation grows, and long answers scroll inside
   .chat-log instead. On desktop this height also drives the two rows it
   spans, keeping hero + info flush with it. */
.tile-chat {
  display: flex;
  flex-direction: column;
  padding: 0;
  overflow: hidden;
  height: 500px;
  background: linear-gradient(160deg, rgba(255, 130, 169, 0.09) 0%, var(--surface) 45%);
  border-color: rgba(255, 130, 169, 0.4);
}

/* ── HEADER ── */
.chat-head {
  display: flex;
  align-items: center;
  gap: 0.7rem;
  padding: 0.85rem 1.1rem 0.7rem;
  border-bottom: 1px solid var(--border);
  flex-shrink: 0;
}

.chat-avatar {
  width: 30px;
  height: 30px;
  border-radius: 9px;
  flex-shrink: 0;
  display: grid;
  place-items: center;
  background: var(--accent);
  box-shadow: 0 3px 14px rgba(255, 130, 169, 0.4);
  font-size: 0.7rem;
  font-weight: 800;
  color: #fff;
  letter-spacing: 0.02em;
}

.chat-id {
  display: flex;
  flex-direction: column;
  line-height: 1.25;
  min-width: 0;
}

.chat-name {
  font-size: 0.86rem;
  font-weight: 700;
  letter-spacing: 0.01em;
  white-space: nowrap;
}

/* The shared "k" in as(k)ashish, tinted so the pun actually reads */
.name-k {
  color: var(--accent2);
  font-weight: 800;
}
.name-k::before,
.name-k::after {
  color: var(--muted);
  opacity: 0.55;
  font-weight: 500;
}
.name-k::before { content: '('; }
.name-k::after  { content: ')'; }

.chat-status {
  display: flex;
  align-items: center;
  gap: 0.35rem;
  font-size: 0.68rem;
  color: var(--muted);
}

.chat-status::before {
  content: '';
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: #34d399;
  box-shadow: 0 0 0 0 rgba(52, 211, 153, 0.6);
  animation: statusPulse 2.4s ease-out infinite;
  flex-shrink: 0;
}

@keyframes statusPulse {
  0%   { box-shadow: 0 0 0 0 rgba(52, 211, 153, 0.5); }
  70%  { box-shadow: 0 0 0 6px rgba(52, 211, 153, 0); }
  100% { box-shadow: 0 0 0 0 rgba(52, 211, 153, 0); }
}

/* ── NEURAL NETWORK STRIP ──
   Full-bleed band under the header so all five layers stay legible
   even in the narrow column. Fires on every message send. */
.nn-wrap {
  width: 100%;
  height: 40px;
  flex-shrink: 0;
  border-bottom: 1px solid var(--border);
  background: linear-gradient(180deg, rgba(255, 130, 169, 0.05), transparent);
}

#nn-canvas {
  width: 100%;
  height: 100%;
  display: block;
}

/* ── MESSAGE LOG ── */
.chat-log {
  flex: 1;
  overflow-y: auto;
  overscroll-behavior: contain;
  padding: 1.1rem;
  display: flex;
  flex-direction: column;
  gap: 0.85rem;
  scroll-behavior: smooth;
  min-height: 0;
}

.chat-log::-webkit-scrollbar { width: 6px; }
.chat-log::-webkit-scrollbar-track { background: transparent; }
.chat-log::-webkit-scrollbar-thumb {
  background: rgba(255, 130, 169, 0.3);
  border-radius: 99px;
}
.chat-log::-webkit-scrollbar-thumb:hover { background: rgba(255, 130, 169, 0.55); }

.msg {
  display: flex;
  max-width: 100%;
  animation: msgIn 0.32s cubic-bezier(0.22, 1, 0.36, 1);
}

@keyframes msgIn {
  from { opacity: 0; transform: translateY(8px); }
  to   { opacity: 1; transform: translateY(0); }
}

.msg-user { justify-content: flex-end; }
.msg-bot  { justify-content: flex-start; }

.bubble {
  max-width: 86%;
  padding: 0.7rem 0.95rem;
  border-radius: 14px;
  font-size: 0.855rem;
  line-height: 1.68;
  word-wrap: break-word;
  overflow-wrap: anywhere;
}

.msg-user .bubble {
  background: var(--accent);
  color: #fff;
  border-bottom-right-radius: 5px;
  box-shadow: 0 3px 16px rgba(255, 130, 169, 0.28);
  font-weight: 500;
}

.msg-bot .bubble {
  background: rgba(24, 32, 46, 0.035);
  border: 1px solid var(--border);
  color: var(--text);
  border-bottom-left-radius: 5px;
}

.msg-bot .bubble p + p { margin-top: 0.65rem; }

/* ── TYPING INDICATOR ── */
.bubble.typing {
  display: flex;
  gap: 4px;
  align-items: center;
  padding: 0.85rem 1rem;
}

.bubble.typing span {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--accent);
  opacity: 0.4;
  animation: blink 1.3s infinite ease-in-out;
}
.bubble.typing span:nth-child(2) { animation-delay: 0.18s; }
.bubble.typing span:nth-child(3) { animation-delay: 0.36s; }

@keyframes blink {
  0%, 60%, 100% { opacity: 0.25; transform: translateY(0); }
  30%           { opacity: 1;    transform: translateY(-3px); }
}

/* ── MESSAGE EXTRAS (tags / links / jump) ── */
.msg-extras {
  margin-top: 0.75rem;
  padding-top: 0.7rem;
  border-top: 1px solid var(--border);
  display: flex;
  flex-direction: column;
  gap: 0.6rem;
  opacity: 0;
  transform: translateY(4px);
  transition: opacity 0.35s ease, transform 0.35s ease;
}
.msg-extras.show { opacity: 1; transform: translateY(0); }

.msg-tags .tag { font-size: 0.66rem; }

.msg-links {
  display: flex;
  flex-wrap: wrap;
  gap: 0.9rem;
}

.msg-link {
  font-size: 0.79rem;
  color: var(--accent);
  text-decoration: none;
  border-bottom: 1px solid rgba(255, 130, 169, 0.35);
  padding-bottom: 1px;
  transition: color 0.2s, border-color 0.2s;
}
.msg-link:hover { color: #C43F6E; border-color: #C43F6E; }

.jump-btn {
  align-self: flex-start;
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0.4rem 0.8rem;
  border-radius: 99px;
  font-size: 0.75rem;
  font-weight: 600;
  font-family: inherit;
  color: var(--tag-color);
  background: var(--tag-bg);
  border: 1px solid rgba(255, 130, 169, 0.3);
  cursor: pointer !important;
  transition: background 0.2s, border-color 0.2s, color 0.2s, transform 0.2s;
}
.jump-btn:hover {
  background: rgba(255, 130, 169, 0.22);
  border-color: var(--accent);
  color: #fff;
  transform: translateY(-1px);
}
.jump-btn svg { flex-shrink: 0; }

/* ── SUGGESTION CHIPS ── */
.chat-chips {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
  padding: 0 1.1rem 0.7rem;
  flex-shrink: 0;
}
.chat-chips:empty { padding-bottom: 0; }

.chip {
  font-family: inherit;
  font-size: 0.74rem;
  padding: 0.34rem 0.8rem;
  border-radius: 99px;
  color: var(--muted);
  background: rgba(24, 32, 46, 0.03);
  border: 1px solid var(--border);
  cursor: pointer !important;
  transition: color 0.2s, border-color 0.2s, background 0.2s, transform 0.2s;
  animation: msgIn 0.3s cubic-bezier(0.22, 1, 0.36, 1);
}
.chip:hover {
  color: var(--text);
  border-color: var(--accent);
  background: var(--accent-glow);
  transform: translateY(-1px);
}

/* ── INPUT ROW ── */
.chat-form {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.7rem 0.8rem 0.8rem;
  border-top: 1px solid var(--border);
  flex-shrink: 0;
}

.chat-input-wrap {
  flex: 1;
  display: flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.55rem 0.9rem;
  border-radius: 11px;
  background: rgba(255, 255, 255, 0.28);
  border: 1px solid var(--border);
  transition: border-color 0.2s, box-shadow 0.2s;
  min-width: 0;
}
.chat-input-wrap:focus-within {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px rgba(255, 130, 169, 0.13);
}

.chat-prompt {
  color: var(--accent);
  font-size: 0.85rem;
  font-weight: 700;
  flex-shrink: 0;
  user-select: none;
}

#chat-input {
  flex: 1;
  min-width: 0;
  background: none;
  border: none;
  outline: none;
  color: var(--text);
  font-family: inherit;
  font-size: 0.855rem;
  cursor: text !important;
}
#chat-input::placeholder { color: rgba(0, 0, 0, 0.5); }
#chat-input:disabled { opacity: 0.55; }

.chat-send {
  width: 38px;
  height: 38px;
  flex-shrink: 0;
  display: grid;
  place-items: center;
  border: none;
  border-radius: 11px;
  color: #fff;
  background: var(--accent);
  box-shadow: 0 3px 14px rgba(255, 130, 169, 0.32);
  cursor: pointer !important;
  transition: transform 0.2s, box-shadow 0.2s, opacity 0.2s;
}
.chat-send:hover:not(:disabled) {
  transform: translateY(-1px);
  box-shadow: 0 6px 20px rgba(127, 149, 209, 0.42);
}
.chat-send:disabled { opacity: 0.4; cursor: not-allowed !important; }

.chat-foot {
  font-size: 0.65rem;
  color: var(--muted);
  opacity: 0.72;
  text-align: center;
  padding: 0 1.1rem 0.75rem;
  line-height: 1.5;
}

/* ── TILE FLASH (jump target highlight) ── */
@keyframes tileFlash {
  0%   { box-shadow: 0 0 0 0 rgba(255, 130, 169, 0);   border-color: var(--border); }
  18%  { box-shadow: 0 0 0 4px rgba(255, 130, 169, 0.32); border-color: var(--accent); }
  100% { box-shadow: 0 0 0 0 rgba(255, 130, 169, 0);   border-color: var(--border); }
}
.tile-flash { animation: tileFlash 1.9s ease-out; }

/* ── DESKTOP: narrow, double-height panel ──
   The chat spans 6 of 16 grid tracks (~420px) across two rows, so type
   and spacing tighten slightly to suit a messenger-width column. */
@media (min-width: 901px) {
  .tile-chat { height: 540px; }

  .chat-head { padding: 0.75rem 0.9rem 0.65rem; }
  .chat-avatar { width: 28px; height: 28px; border-radius: 8px; font-size: 0.66rem; }
  .chat-name { font-size: 0.82rem; }
  .chat-status { font-size: 0.66rem; }

  .chat-log { padding: 0.95rem 0.9rem; gap: 0.75rem; }
  .bubble {
    max-width: 90%;
    font-size: 0.82rem;
    line-height: 1.64;
    padding: 0.65rem 0.85rem;
  }
  .msg-bot .bubble p + p { margin-top: 0.6rem; }
  .msg-tags .tag { font-size: 0.64rem; padding: 0.16rem 0.5rem; }
  .msg-link { font-size: 0.755rem; }
  .msg-links { gap: 0.8rem; }
  .jump-btn { font-size: 0.72rem; padding: 0.36rem 0.7rem; }

  .chat-chips { padding: 0 0.9rem 0.6rem; gap: 0.35rem; }
  .chip { font-size: 0.705rem; padding: 0.3rem 0.65rem; }

  .chat-form { padding: 0.6rem 0.7rem 0.65rem; gap: 0.45rem; }
  .chat-input-wrap { padding: 0.5rem 0.8rem; border-radius: 10px; }
  #chat-input { font-size: 0.815rem; }
  .chat-send { width: 35px; height: 35px; border-radius: 10px; }
  .chat-foot { font-size: 0.62rem; padding: 0 0.9rem 0.65rem; }

  /* Info tile is a wide slim bar now, so lay its links out horizontally */
  .tile-info {
    justify-content: center;
    gap: 0.85rem;
  }
  .tile-info .info-links {
    flex-direction: row;
    flex-wrap: wrap;
    align-items: center;
    gap: 0.5rem 1.75rem;
    flex: 0;
  }
}

/* ── WANT IT WIDER / NARROWER STILL? ──
   The desktop grid in style.css has 16 tracks. The chat starts at track
   12 and runs to the end; the hero and info tiles end where it begins.
   To resize, move that one boundary in both places:
     .tile-chat { grid-column: 11 / 17; }   ← lower 11 = wider chat
     .tile-hero, .tile-info { grid-column: 1 / 11; }
   One track is ~73px. Nothing below row 2 is affected.
   Height is set independently by .tile-chat { height: ... }. */

/* ── RESPONSIVE ── */
@media (max-width: 560px) {
  .tile-chat { height: 440px; }
  .chat-log { padding: 0.9rem; }
  .bubble { max-width: 92%; font-size: 0.83rem; }
  .nn-wrap { height: 34px; }
  .chat-chips { padding: 0 0.9rem 0.6rem; }
  .chat-form { padding: 0.6rem; }
}

/* ── REDUCED MOTION ── */
@media (prefers-reduced-motion: reduce) {
  .msg, .chip { animation: none; }
  .chat-status::before { animation: none; }
  .tile-flash { animation: none; border-color: var(--accent) !important; }
  .chat-log { scroll-behavior: auto; }
}

.msg-user .bubble { background: #4A4548; box-shadow: 0 3px 14px rgba(0,0,0,0.25); }
.jump-btn { color: #4A5FA0; background: rgba(127,149,209,0.32); border-color: rgba(127,149,209,0.6); }
.jump-btn:hover { background: #7F95D1; color: #2E3F75; border-color: #7F95D1; }
.name-k { color: #FF82A9; }

.chat-avatar { background: #000; box-shadow: 0 3px 14px rgba(255,130,169,0.45); }
.chat-send { background: #000; box-shadow: 0 3px 14px rgba(255,130,169,0.45); }
.chat-send:hover:not(:disabled) { background: #FF82A9; color: #000; }
.msg-user .bubble { background: #000; color: #fff; box-shadow: 0 3px 14px rgba(255,130,169,0.35); }
.chat-prompt, .msg-link { color: #C43F6E; }
.name-k { color: #C43F6E; }
.chat-avatar, .chat-send { background: #FF82A9; color: #000; }
.msg-bot .bubble { background: rgba(255,235,231,0.06); color: #FFEBE7; }
.msg-user .bubble { background: #7F95D1; color: #000; box-shadow: 0 0 18px rgba(127,149,209,0.4); }
.chat-input-wrap { background: rgba(255,235,231,0.06); }
#chat-input { color: #FFEBE7; }
.chip { color: #E9C9C6; background: rgba(255,235,231,0.04); }
.jump-btn { background: rgba(127,149,209,0.16); color: #B9C6EC; border-color: rgba(127,149,209,0.45); }
.chat-prompt, .msg-link, .name-k { color: #FF9FBD; }
#chat-input::placeholder { color: rgba(233, 201, 198, 0.55); }