/* Lucan Grinds AI Tutor – uses the existing site palette */
:root {
  --lg-purple: #4A148C;
  --lg-purple-dark: #321064;
  --lg-lilac: #F7F0FC;
  --lg-lilac-2: #E6D5F2;
  --lg-ink: #202033;
  --lg-muted: #686477;
  --lg-border: #e8e1ef;
}
* { box-sizing: border-box; }
.tutor-page { background: #fbf9fd; color: var(--lg-ink); }
.brand-link { text-decoration: none; }
.tutor-main { max-width: 1160px; margin: 0 auto; padding: 46px 22px 64px; }
.tutor-intro { text-align: center; max-width: 780px; margin: 0 auto 32px; }
.eyebrow { display: inline-block; color: var(--lg-purple); background: #efe4f8; border-radius: 30px; padding: 7px 13px; font-size: .75rem; font-weight: 800; letter-spacing: .09em; }
.tutor-intro h1 { color: #20113b; font-size: clamp(2rem, 5vw, 3.2rem); line-height: 1.12; margin: 17px 0 12px; }
.tutor-intro p { color: #625c70; font-size: 1.08rem; margin: 0 auto; max-width: 720px; }
.trust-points { display: flex; justify-content: center; flex-wrap: wrap; gap: 10px 20px; margin-top: 19px; color: var(--lg-purple); font-size: .9rem; font-weight: 700; }
.tutor-layout { display: grid; grid-template-columns: 270px minmax(0, 1fr); gap: 22px; align-items: stretch; }
.setup-card, .chat-card { background: #fff; border: 1px solid var(--lg-border); border-radius: 17px; box-shadow: 0 8px 30px rgba(48, 20, 77, .06); }
.setup-card { padding: 23px; }
.setup-card h2, .chat-heading h2 { margin: 0; color: #24133c; font-size: 1.15rem; }
.muted { color: var(--lg-muted); font-size: .9rem; line-height: 1.5; margin: 9px 0 22px; }
.setup-card label { display: block; color: #3d3150; font-weight: 700; font-size: .88rem; margin: 15px 0 7px; }
.setup-card select { width: 100%; border: 1px solid #d9cde5; border-radius: 9px; padding: 12px 10px; background: #fff; color: #30243f; font: inherit; }
.daily-limit { display: flex; align-items: center; gap: 11px; margin-top: 22px; padding: 13px; border-radius: 11px; background: #f3eafa; color: var(--lg-purple); }
.limit-icon { display: grid; place-items: center; width: 34px; height: 34px; background: #fff; border-radius: 50%; font-size: 1.2rem; }
.daily-limit strong, .daily-limit small { display: block; }
.daily-limit strong { font-size: .87rem; }
.daily-limit small { color: #756784; margin-top: 3px; font-size: .75rem; }
.privacy-note { margin-top: 23px; padding-top: 18px; border-top: 1px solid var(--lg-border); }
.privacy-note strong { font-size: .88rem; color: #3d3150; }
.privacy-note p { color: var(--lg-muted); font-size: .79rem; line-height: 1.5; margin: 6px 0 0; }
.chat-card { min-height: 610px; display: flex; flex-direction: column; overflow: hidden; }
.chat-heading { min-height: 76px; display: flex; align-items: center; gap: 12px; padding: 14px 19px; border-bottom: 1px solid var(--lg-border); }
.tutor-avatar { width: 43px; height: 43px; display: grid; place-items: center; border-radius: 14px; background: var(--lg-purple); color: #fff; font-size: 1.45rem; font-weight: 700; }
.chat-heading h2 { font-size: 1rem; }
.chat-heading span { color: #777083; font-size: .78rem; }
.status-dot { display: inline-block; width: 7px; height: 7px; background: #22a06b; border-radius: 50%; margin-right: 4px; }
.clear-button { margin-left: auto; background: #fff; border: 1px solid #e1d8e9; color: var(--lg-purple); border-radius: 8px; padding: 8px 11px; font-size: .82rem; cursor: pointer; }
.chat-messages { flex: 1; min-height: 420px; max-height: 570px; overflow-y: auto; padding: 22px; display: flex; flex-direction: column; gap: 16px; }
.message { max-width: 88%; border-radius: 14px; padding: 13px 15px; line-height: 1.6; font-size: .94rem; overflow-wrap: anywhere; }
.message p { margin: 5px 0 9px; white-space: pre-wrap; }
.assistant-message { align-self: flex-start; background: #f5f0f9; color: #30243f; border-bottom-left-radius: 4px; }
.user-message { align-self: flex-end; background: var(--lg-purple); color: #fff; border-bottom-right-radius: 4px; }
.message-label { font-size: .72rem; font-weight: 800; opacity: .72; margin-bottom: 5px; }
.starter-prompts { display: flex; flex-wrap: wrap; gap: 7px; margin-top: 13px; }
.prompt-chip { border: 1px solid #d9c9e8; background: #fff; color: var(--lg-purple); border-radius: 20px; padding: 7px 10px; font-size: .76rem; cursor: pointer; }
.prompt-chip:hover { background: #efe4f8; }
.chat-composer { display: flex; gap: 9px; align-items: flex-end; padding: 13px 16px 8px; border-top: 1px solid var(--lg-border); }
.chat-composer textarea { resize: none; min-height: 45px; max-height: 130px; margin: 0; border: 1px solid #ded4e8; border-radius: 10px; padding: 11px 12px; font: inherit; line-height: 1.4; flex: 1; width: auto; outline-color: var(--lg-purple); }
.attach-button { width: 43px; height: 43px; flex: 0 0 43px; padding: 0; border-radius: 10px; font-size: 1.5rem; line-height: 1; background: #f2eaf8; color: var(--lg-purple); cursor: pointer; }
.send-button { min-width: 68px; height: 43px; border-radius: 10px; cursor: pointer; }
.send-button:disabled, .attach-button:disabled { opacity: .5; cursor: not-allowed; }
.composer-foot { display: flex; justify-content: space-between; gap: 10px; padding: 0 17px 13px; color: #81798b; font-size: .69rem; }
.upload-preview[hidden] { display: none; }
.upload-preview { display: flex; align-items: center; gap: 10px; padding: 8px 16px; background: #fbf8fd; border-top: 1px solid var(--lg-border); }
.upload-preview img { width: 48px; height: 48px; object-fit: cover; border-radius: 7px; }
.upload-preview strong, .upload-preview small { display: block; font-size: .78rem; }
.upload-preview small { color: var(--lg-muted); }
.upload-preview button { margin-left: auto; background: transparent; color: #5e526c; font-size: 1.3rem; padding: 4px 9px; cursor: pointer; }
.how-to-use { margin-top: 54px; }
.how-to-use h2 { text-align: center; color: #24133c; margin-bottom: 20px; }
.help-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 17px; }
.help-grid article { background: #fff; border: 1px solid var(--lg-border); border-radius: 13px; padding: 20px; }
.help-grid article span { color: var(--lg-purple); font-weight: 800; font-size: .82rem; }
.help-grid h3 { color: #302044; font-size: 1rem; margin: 9px 0 5px; }
.help-grid p { color: var(--lg-muted); font-size: .88rem; line-height: 1.55; margin: 0; }
.tutor-footer { text-align: center; padding: 25px 20px; background: var(--lg-purple); color: #fff; }
.tutor-footer p { margin: 5px 0; }
.tutor-footer a { color: #fff; }
.tutor-footer small { display: block; opacity: .8; margin-top: 10px; }
.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; }
.typing { opacity: .75; font-style: italic; }
@media (max-width: 820px) {
  .tutor-layout { grid-template-columns: 1fr; }
  .setup-card { display: grid; grid-template-columns: 1fr 1fr; column-gap: 15px; }
  .setup-card h2, .setup-card .muted, .privacy-note { grid-column: 1 / -1; }
  .daily-limit { align-self: end; }
  .chat-card { min-height: 570px; }
}
@media (max-width: 560px) {
  .tutor-main { padding: 30px 12px 45px; }
  .setup-card { display: block; padding: 18px; }
  .help-grid { grid-template-columns: 1fr; }
  .chat-messages { padding: 15px 12px; }
  .message { max-width: 96%; }
  .chat-heading { padding: 12px; }
  .chat-heading h2 { font-size: .9rem; }
  .composer-foot { display: block; line-height: 1.5; }
  .composer-foot span { display: block; }
  .chat-composer { padding: 11px 10px 7px; gap: 6px; }
  .send-button { min-width: 56px; }
}


/* Rich Maths Tutor answer formatting */
.message-content {
  white-space: normal;
  overflow-wrap: anywhere;
}
.message-content p { margin: 7px 0 12px; white-space: normal; }
.message-content p:last-child { margin-bottom: 0; }
.message-content h1, .message-content h2, .message-content h3 {
  margin: 14px 0 8px;
  line-height: 1.3;
}
.message-content ul, .message-content ol {
  margin: 8px 0 12px;
  padding-left: 1.5rem;
}
.message-content li { margin: 4px 0; }
.message-content code {
  background: rgba(74, 20, 140, .08);
  border-radius: 4px;
  padding: 1px 4px;
}
.message-content .katex-display {
  max-width: 100%;
  overflow-x: auto;
  overflow-y: hidden;
  padding: 5px 0 9px;
}
.message-content .katex { font-size: 1.04em; }