/* ============================================================
   ai-chatbot.css — /projects/ai-chatbot only.
   Loaded after base.css and project.css.
   ============================================================ */

/* ---- Hero ------------------------------------------------- */

.chat-hero {
  display: grid;
  grid-template-columns: 1.4fr 1fr;
  gap: var(--s6);
  align-items: center;
}

/* The clickable idle lock */
.lock-frame {
  background: var(--bg-raised);
  border: var(--border-thick) solid var(--line);
  box-shadow: 8px 8px 0 var(--shadow);
  overflow: hidden;
  cursor: pointer;
  transition: transform 0.15s ease, box-shadow 0.15s ease;
}

.lock-frame:hover,
.lock-frame:focus-visible {
  transform: translate(-4px, -4px);
  box-shadow: 12px 12px 0 var(--accent);
}

.lock-frame video { width: 100%; display: block; }

.flow-caption {
  font-family: var(--mono);
  font-size: var(--text-sm);
  color: var(--ink-soft);
  margin-top: var(--s5);
  max-width: 68ch;
}

@media (max-width: 700px) {
  .chat-hero { grid-template-columns: 1fr; }
  .lock-frame { max-width: 260px; }
}

/* ---- Modal ----------------------------------------------- */

.chat-backdrop {
  position: fixed;
  inset: 0;
  z-index: 200;
  display: none;
  align-items: center;
  justify-content: center;
  padding: var(--s4);
  background: rgba(17, 17, 17, 0.55);
}

.chat-backdrop.active { display: flex; }

.chat-modal {
  position: relative;
  width: 100%;
  max-width: 440px;
  background: var(--bg);
  border: var(--border-thick) solid var(--line);
  box-shadow: 10px 10px 0 var(--shadow);
  display: flex;
  flex-direction: column;
  max-height: min(680px, 90vh);
}

/* Vault, peeking in at the top of the modal */
.modal-mascot {
  border-bottom: var(--border) solid var(--line);
  background: var(--bg-raised);
  max-height: 150px;
  overflow: hidden;
  flex-shrink: 0;
}

.modal-mascot video {
  width: 100%;
  display: block;
  object-fit: cover;
}

.chat-overlay {
  display: flex;
  flex-direction: column;
  min-height: 0;   /* lets chat-history scroll instead of overflowing */
  flex: 1;
}

.chat-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--s3);
  padding: var(--s3) var(--s4);
  border-bottom: var(--border) solid var(--line);
  background: var(--ink);
  color: var(--bg);
  font-family: var(--mono);
  font-size: var(--text-sm);
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  flex-shrink: 0;
}

.close-btn {
  background: none;
  border: 0;
  color: inherit;
  font-size: 1.5rem;
  line-height: 1;
  cursor: pointer;
  padding: 0 var(--s2);
}
.close-btn:hover { color: var(--accent); }

/* ---- History --------------------------------------------- */

.chat-history {
  flex: 1;
  overflow-y: auto;
  padding: var(--s4);
  display: flex;
  flex-direction: column;
  gap: var(--s3);
  min-height: 0;
}

.msg {
  max-width: 85%;
  padding: var(--s3) var(--s4);
  font-size: 0.9375rem;
  line-height: 1.5;
  border: var(--border) solid var(--line);
}

.msg.bot {
  align-self: flex-start;
  background: var(--bg-raised);
}

.msg.user {
  align-self: flex-end;
  background: var(--ink);
  color: var(--bg);
  border-color: var(--ink);
}

.msg code {
  font-size: 0.85em;
  background: rgba(255, 130, 0, 0.14);
  border-color: transparent;
}

/* ---- Suggestion chips ------------------------------------ */

.suggestion-chips {
  display: flex;
  flex-wrap: wrap;
  gap: var(--s2);
}

.suggestion-chips .chip {
  font-family: var(--mono);
  font-size: var(--text-xs);
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--ink-soft);
  background: transparent;
  border: 1px solid var(--line-soft);
  padding: var(--s2) var(--s3);
  cursor: pointer;
  text-align: left;
}

.suggestion-chips .chip:hover {
  background: var(--accent);
  border-color: var(--accent);
  color: var(--accent-ink);
}

/* ---- Typing indicator ------------------------------------ */

/* Hidden by default. The script flips this to block. */
.typing-indicator {
  display: none;
  gap: 5px;
  align-self: flex-start;
  padding: var(--s3) var(--s4);
  border: var(--border) solid var(--line-soft);
}

.typing-indicator .dot {
  display: inline-block;
  width: 7px;
  height: 7px;
  margin-right: 3px;
  border-radius: 50%;
  background: var(--ink-faint);
  animation: blink 1.4s infinite both;
}

.typing-indicator .dot:nth-child(2) { animation-delay: 0.2s; }
.typing-indicator .dot:nth-child(3) { animation-delay: 0.4s; }

@keyframes blink {
  0%, 80%, 100% { opacity: 0.25; }
  40%           { opacity: 1; }
}

/* ---- Input ----------------------------------------------- */

.chat-input {
  display: flex;
  gap: var(--s2);
  padding: var(--s3);
  border-top: var(--border) solid var(--line);
  background: var(--bg-raised);
  flex-shrink: 0;
}

.chat-input input {
  flex: 1;
  min-width: 0;
  font-family: var(--sans);
  font-size: 0.9375rem;
  color: var(--ink);
  background: var(--bg);
  border: var(--border) solid var(--line);
  padding: var(--s3);
}

.chat-input button {
  font-family: var(--mono);
  font-size: var(--text-xs);
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  background: var(--ink);
  color: var(--bg);
  border: var(--border) solid var(--line);
  padding: var(--s3) var(--s4);
  cursor: pointer;
}

.chat-input button:hover {
  background: var(--accent);
  border-color: var(--accent);
  color: var(--accent-ink);
}

/* Visually hidden, still read by screen readers */
.sr-only {
  position: absolute;
  width: 1px; height: 1px;
  padding: 0; margin: -1px;
  overflow: hidden;
  clip: rect(0 0 0 0);
  white-space: nowrap;
  border: 0;
}