/*
 * KT1.2 Kai Tutor widget styles.
 *
 * Pairs with tutor.js / tutor-dom.js to style the in-lesson chat panel and
 * the "Ask Kai" launcher.
 *
 * Theme: reuses lesson custom properties (--accent, --bg, --ink,
 * --ink-dim, --ink-faint, --rule, --mono, --serif, --p2). No new color
 * tokens. All copy in the JS uses plain ASCII (no em dashes); arrows use
 * the "->" sequence to keep the brand voice constraint.
 *
 * Branding: the footer reads "Kai Tutor". No legacy vendor name appears in
 * these assets (brand audited).
 *
 * Tier-0 deterrent (T157.1): the lesson body sets user-select: none.
 * The tutor input and buttons are interactive, so they opt back into
 * normal pointer/keyboard behavior.
 */

.kai-tutor-launch {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  margin: 40px 0 8px;
}

.kai-tutor-open {
  padding: 12px 22px;
  background: var(--accent);
  color: #000;
  border: 0;
  border-radius: 4px;
  font-family: var(--mono);
  font-weight: 600;
  font-size: 13px;
  letter-spacing: 0.05em;
  cursor: pointer;
  user-select: text;
}

.kai-tutor-open:focus {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}

.kai-tutor-panel {
  display: none;
  flex-direction: column;
  margin: 16px 0 24px;
  border: 1px solid var(--rule);
  border-left: 3px solid var(--accent);
  border-radius: 6px;
  background: rgba(212, 255, 58, 0.03);
  overflow: hidden;
}

.kai-tutor-panel.is-open {
  display: flex;
}

.kai-tutor-header {
  display: flex;
  align-items: center;
  padding: 14px 18px;
  border-bottom: 1px solid var(--rule);
}

.kai-tutor-title {
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--ink-faint);
}

.kai-tutor-clear {
  margin-left: auto;
  padding: 4px 10px;
  background: transparent;
  color: var(--ink-faint);
  border: 1px solid var(--rule);
  border-radius: 4px;
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.06em;
  cursor: pointer;
}

.kai-tutor-clear:hover {
  color: var(--accent);
  border-color: var(--accent);
}

.kai-tutor-clear:focus {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}

.kai-tutor-transcript {
  display: flex;
  flex-direction: column;
  gap: 12px;
  max-height: 340px;
  overflow-y: auto;
  padding: 18px;
}

.kai-tutor-msg {
  display: flex;
}

.kai-tutor-msg.is-user {
  justify-content: flex-end;
}

.kai-tutor-msg.is-tutor {
  justify-content: flex-start;
}

.kai-tutor-msg-text {
  display: inline-block;
  max-width: 80%;
  padding: 10px 14px;
  border-radius: 6px;
  font-family: var(--mono);
  font-size: 13px;
  line-height: 1.5;
  white-space: pre-wrap;
}

.kai-tutor-msg.is-user .kai-tutor-msg-text {
  background: rgba(212, 255, 58, 0.08);
  color: var(--ink);
  border: 1px solid var(--rule);
}

.kai-tutor-msg.is-tutor .kai-tutor-msg-text {
  background: transparent;
  color: var(--ink-dim);
  border: 1px solid var(--rule);
}

.kai-tutor-composer {
  display: flex;
  gap: 10px;
  padding: 14px 18px;
  border-top: 1px solid var(--rule);
}

.kai-tutor-input {
  flex: 1;
  padding: 10px 14px;
  background: transparent;
  color: var(--ink);
  border: 1px solid var(--rule);
  border-radius: 4px;
  font-family: var(--mono);
  font-size: 13px;
  user-select: text;
}

.kai-tutor-input:focus {
  outline: none;
  border-color: var(--accent);
}

.kai-tutor-send {
  padding: 10px 22px;
  background: var(--accent);
  color: #000;
  border: 0;
  border-radius: 4px;
  font-family: var(--mono);
  font-weight: 600;
  font-size: 13px;
  letter-spacing: 0.05em;
  cursor: pointer;
}

.kai-tutor-send:disabled {
  opacity: 0.45;
  cursor: not-allowed;
}

.kai-tutor-footer {
  margin: 0;
  padding: 10px 18px;
  border-top: 1px solid var(--rule);
  color: var(--ink-faint);
  font-family: var(--mono);
  font-size: 11px;
  letter-spacing: 0.06em;
  text-align: right;
}

.kai-tutor-panel.is-degraded .kai-tutor-input,
.kai-tutor-panel.is-degraded .kai-tutor-send {
  opacity: 0.45;
}

.kai-tutor-panel.is-degraded .kai-tutor-msg.is-tutor:last-child
  .kai-tutor-msg-text {
  color: var(--ink-faint);
  font-style: italic;
}

.kai-tutor-didnt-help {
  align-self: flex-start;
  margin: 0 18px 4px;
  padding: 6px 0;
  background: transparent;
  color: var(--ink-faint);
  border: 0;
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: 0.04em;
  text-decoration: underline;
  cursor: pointer;
  user-select: text;
}

.kai-tutor-didnt-help:hover {
  color: var(--accent);
}

.kai-tutor-didnt-help:focus {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}

.kai-tutor-handoff {
  display: flex;
  flex-direction: column;
  gap: 10px;
  margin: 0 18px 16px;
  padding: 14px;
  border: 1px solid var(--rule);
  border-left: 3px solid var(--accent);
  border-radius: 6px;
  background: rgba(212, 255, 58, 0.04);
}

.kai-tutor-handoff[hidden] {
  display: none;
}

.kai-tutor-handoff-intro {
  margin: 0;
  color: var(--ink-dim);
  font-family: var(--mono);
  font-size: 12px;
  line-height: 1.5;
}

.kai-tutor-handoff-text {
  width: 100%;
  box-sizing: border-box;
  padding: 12px 14px;
  background: var(--bg);
  color: var(--ink);
  border: 1px solid var(--rule);
  border-radius: 4px;
  font-family: var(--mono);
  font-size: 12px;
  line-height: 1.55;
  resize: vertical;
  user-select: text;
}

.kai-tutor-handoff-text:focus {
  outline: none;
  border-color: var(--accent);
}

.kai-tutor-handoff-actions {
  display: flex;
  align-items: center;
  gap: 12px;
}

.kai-tutor-handoff-copy {
  padding: 9px 18px;
  background: var(--accent);
  color: #000;
  border: 0;
  border-radius: 4px;
  font-family: var(--mono);
  font-weight: 600;
  font-size: 12px;
  letter-spacing: 0.05em;
  cursor: pointer;
  user-select: text;
}

.kai-tutor-handoff-copy:focus {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}

.kai-tutor-handoff-link {
  color: var(--accent);
  font-family: var(--mono);
  font-size: 12px;
  letter-spacing: 0.04em;
  text-decoration: none;
  user-select: text;
}

.kai-tutor-handoff-link:hover {
  text-decoration: underline;
}