.tutor-card {
  position: relative;
  margin-bottom: 16px;
  padding: 0;
  overflow: hidden;
  isolation: isolate;
}

.tutor-card::before {
  content: "";
  position: absolute;
  z-index: -1;
  width: 280px;
  height: 280px;
  top: -190px;
  right: -70px;
  border-radius: 50%;
  background: radial-gradient(circle, color-mix(in srgb, var(--accent) 30%, transparent), transparent 68%);
  pointer-events: none;
}

.tutor-hero {
  padding: clamp(18px, 3vw, 26px);
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 18px;
  border-bottom: 1px solid var(--line);
  background:
    linear-gradient(135deg, color-mix(in srgb, var(--accent-soft) 74%, transparent), transparent 62%),
    var(--surface);
}

.tutor-identity { display: flex; align-items: center; gap: 13px; }
.tutor-orb {
  position: relative;
  width: 48px;
  height: 48px;
  flex: 0 0 auto;
  display: grid;
  place-items: center;
  border: 1px solid color-mix(in srgb, var(--accent) 35%, var(--line));
  border-radius: 16px;
  background: color-mix(in srgb, var(--accent-soft) 82%, var(--surface-solid));
  color: var(--accent-readable);
  box-shadow: 0 12px 30px color-mix(in srgb, var(--accent) 14%, transparent);
}

.tutor-orb::after {
  content: "";
  position: absolute;
  inset: -4px;
  border: 1px solid color-mix(in srgb, var(--accent) 26%, transparent);
  border-radius: 19px;
  opacity: .7;
  animation: tutor-breathe 3.4s ease-in-out infinite;
}

.tutor-orb .icon { width: 23px; height: 23px; }
.tutor-heading h2 { margin: 0; font-size: clamp(19px, 3vw, 24px); letter-spacing: -.04em; }
.tutor-heading p { margin: 5px 0 0; color: var(--muted-readable); font-size: 12px; line-height: 1.5; }
.tutor-scope {
  min-height: 30px;
  padding: 0 10px;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  border: 1px solid color-mix(in srgb, var(--mint) 28%, var(--line));
  border-radius: 999px;
  background: color-mix(in srgb, var(--mint-soft) 80%, var(--surface));
  color: var(--mint-readable, var(--accent-readable));
  font-size: 10px;
  font-weight: 780;
  white-space: nowrap;
}

.tutor-scope-dot { width: 6px; height: 6px; border-radius: 50%; background: var(--mint); box-shadow: 0 0 0 4px color-mix(in srgb, var(--mint) 14%, transparent); }
.tutor-body { padding: clamp(16px, 3vw, 22px); }
.tutor-modes { display: flex; gap: 7px; overflow-x: auto; padding: 2px 1px 10px; scrollbar-width: none; }
.tutor-modes::-webkit-scrollbar { display: none; }
.tutor-mode {
  min-height: 38px;
  flex: 0 0 auto;
  padding: 0 12px;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: var(--surface-soft);
  color: var(--muted-readable);
  font-size: 11px;
  font-weight: 720;
  cursor: pointer;
  transition: transform var(--fast) var(--ease-expo), border-color var(--fast) ease, background var(--fast) ease, color var(--fast) ease;
}

.tutor-mode:hover { border-color: var(--line-strong); color: var(--ink); }
.tutor-mode[aria-pressed="true"] { border-color: var(--accent); background: var(--accent); color: #fff; }
.tutor-mode:active { transform: scale(.96); transition-duration: 70ms; }
.tutor-thread {
  min-height: 210px;
  max-height: 430px;
  margin-top: 2px;
  padding: 16px;
  overflow-y: auto;
  display: grid;
  align-content: start;
  gap: 13px;
  border: 1px solid var(--line);
  border-radius: 19px;
  background: color-mix(in srgb, var(--surface-soft) 72%, transparent);
  scroll-behavior: smooth;
  overscroll-behavior: contain;
}

.tutor-empty { min-height: 176px; display: grid; place-items: center; text-align: center; color: var(--muted-readable); }
.tutor-empty-icon { width: 44px; height: 44px; margin: 0 auto 11px; display: grid; place-items: center; border-radius: 15px; background: var(--accent-soft); color: var(--accent-readable); }
.tutor-empty strong { display: block; color: var(--ink); font-size: 14px; }
.tutor-empty span { display: block; max-width: 40ch; margin-top: 5px; font-size: 11px; line-height: 1.5; }
.tutor-message { max-width: min(88%, 650px); display: grid; gap: 7px; animation: tutor-arrive 320ms cubic-bezier(.22, 1, .36, 1) both; }
.tutor-message.is-user { margin-left: auto; justify-items: end; }
.tutor-message-label { padding: 0 4px; color: var(--muted); font-size: 9px; font-weight: 760; letter-spacing: .07em; text-transform: uppercase; }
.tutor-bubble {
  padding: 12px 14px;
  border: 1px solid var(--line);
  border-radius: 16px 16px 16px 5px;
  background: var(--surface-solid);
  color: var(--ink);
  font-size: 13px;
  line-height: 1.62;
  white-space: pre-wrap;
  overflow-wrap: anywhere;
  box-shadow: 0 7px 24px rgba(0, 0, 0, .04);
}

.tutor-message.is-user .tutor-bubble { border-color: transparent; border-radius: 16px 16px 5px 16px; background: var(--accent); color: #fff; box-shadow: 0 9px 26px color-mix(in srgb, var(--accent) 20%, transparent); }
.tutor-followups { display: flex; flex-wrap: wrap; gap: 6px; }
.tutor-followup {
  min-height: 34px;
  padding: 0 10px;
  border: 1px solid var(--line);
  border-radius: 11px;
  background: var(--surface);
  color: var(--accent-readable);
  font-size: 10px;
  font-weight: 710;
  text-align: left;
  cursor: pointer;
  transition: transform var(--fast) var(--ease-expo), border-color var(--fast) ease, background var(--fast) ease;
}

.tutor-followup:hover { border-color: var(--accent); background: var(--accent-soft); }
.tutor-followup:active { transform: scale(.97); }
.tutor-reminder-suggestion { padding: 11px 12px; display: flex; align-items: center; gap: 11px; border: 1px solid color-mix(in srgb, var(--coral) 25%, var(--line)); border-radius: 14px; background: color-mix(in srgb, var(--coral-soft) 62%, var(--surface)); }
.tutor-reminder-copy { min-width: 0; flex: 1; }
.tutor-reminder-copy strong { display: block; font-size: 11px; overflow-wrap: anywhere; }
.tutor-reminder-copy span { display: block; margin-top: 3px; color: var(--muted-readable); font-size: 10px; }
.tutor-reminder-add { min-height: 36px; padding: 0 11px; border: 0; border-radius: 11px; background: var(--coral); color: #fff; font-size: 10px; font-weight: 760; cursor: pointer; }
.tutor-reminder-add:disabled { opacity: .55; cursor: default; }
.tutor-loading { max-width: 82%; display: grid; gap: 8px; }
.tutor-loading-label { color: var(--muted); font-size: 9px; font-weight: 760; letter-spacing: .07em; text-transform: uppercase; }
.tutor-shimmer { width: min(360px, 78vw); padding: 13px; display: grid; gap: 8px; border: 1px solid var(--line); border-radius: 16px 16px 16px 5px; background: var(--surface-solid); }
.tutor-shimmer span { height: 9px; display: block; overflow: hidden; border-radius: 999px; background: var(--line); }
.tutor-shimmer span:nth-child(2) { width: 82%; }
.tutor-shimmer span:nth-child(3) { width: 58%; }
.tutor-shimmer span::after { content: ""; width: 55%; height: 100%; display: block; background: linear-gradient(90deg, transparent, color-mix(in srgb, var(--accent) 30%, transparent), transparent); animation: tutor-shimmer 1.25s ease-in-out infinite; }
.tutor-error { padding: 12px 14px; border: 1px solid color-mix(in srgb, var(--coral) 30%, var(--line)); border-radius: 15px; background: color-mix(in srgb, var(--coral-soft) 55%, var(--surface)); color: var(--ink); font-size: 11px; line-height: 1.5; }
.tutor-error button { margin-top: 9px; }
.tutor-form { margin-top: 12px; display: grid; grid-template-columns: minmax(0, 1fr) auto; gap: 9px; align-items: end; }
.tutor-compose { position: relative; }
.tutor-compose textarea { min-height: 54px; max-height: 150px; padding: 15px 46px 15px 15px; resize: vertical; line-height: 1.45; }
.tutor-count { position: absolute; right: 12px; bottom: 9px; color: var(--muted); font-size: 9px; font-variant-numeric: tabular-nums; pointer-events: none; }
.tutor-send { min-width: 102px; min-height: 54px; }
.tutor-fineprint { margin: 10px 3px 0; display: flex; align-items: flex-start; justify-content: space-between; gap: 14px; color: var(--muted); font-size: 10px; line-height: 1.5; }
.tutor-fineprint p { margin: 0; max-width: 76ch; }
.tutor-clear { flex: 0 0 auto; padding: 0; border: 0; background: transparent; color: var(--muted-readable); font: inherit; font-weight: 700; cursor: pointer; text-decoration: underline; text-decoration-color: transparent; text-underline-offset: 3px; }
.tutor-clear:hover { color: var(--ink); text-decoration-color: currentColor; }

@keyframes tutor-breathe {
  0%, 100% { opacity: .35; transform: scale(.96); }
  50% { opacity: .8; transform: scale(1.04); }
}

@keyframes tutor-arrive {
  from { opacity: 0; transform: translateY(9px); }
  to { opacity: 1; transform: translateY(0); }
}

@keyframes tutor-shimmer {
  from { transform: translateX(-120%); }
  to { transform: translateX(260%); }
}

@media (max-width: 620px) {
  .tutor-hero { display: grid; }
  .tutor-scope { width: fit-content; }
  .tutor-body { padding: 14px; }
  .tutor-modes { flex-wrap: wrap; overflow-x: visible; }
  .tutor-mode { flex: 1 1 calc(50% - 7px); }
  .tutor-thread { min-height: 245px; max-height: 52dvh; padding: 12px; }
  .tutor-message { max-width: 94%; }
  .tutor-form { grid-template-columns: 1fr; }
  .tutor-send { width: 100%; }
  .tutor-fineprint { display: grid; }
  .tutor-reminder-suggestion { align-items: flex-start; flex-wrap: wrap; }
  .tutor-reminder-add { margin-left: auto; }
}

@media (prefers-reduced-motion: reduce) {
  .tutor-orb::after, .tutor-shimmer span::after { animation: none; }
  .tutor-message { animation: none; }
  .tutor-thread { scroll-behavior: auto; }
}