/* Account UI shares typography and the generated-material styles with the studio. */
.portal-page { min-width: 280px; }
.portal-page button, .portal-page a, .portal-page input, .portal-page select { touch-action: manipulation; }
.portal-page :is(button,a,input,select):focus-visible { outline: 2px solid var(--accent); outline-offset: 4px; }
.portal-page button { cursor: pointer; }
.portal-page button:disabled { cursor: wait; opacity: .55; }
.portal-page a.btn { display: inline-flex; text-decoration: none; align-items: center; justify-content: center; }
.portal-page h1, .portal-page h2, .portal-page h3 { line-height: 1.2; overflow-wrap: anywhere; }
.session-check { min-height: 65vh; display: grid; place-content: center; justify-items: center; color: var(--muted); }
.session-check .brand-mark { width: 48px; height: 48px; font-size: 26px; }
.portal-header { display: flex; gap: 16px; align-items: center; justify-content: space-between; padding: 15px clamp(16px,4vw,54px); border-bottom: 1px solid var(--border); min-height: 75px; background: var(--surface); }
.portal-brand { display: inline-flex; gap: 10px; align-items: center; color: var(--fg); text-decoration: none; }
.portal-brand strong { font-size: 18px; letter-spacing: -.5px; }
.portal-brand small { display: block; color: var(--muted); font-size: 11px; }
.portal-user { display: flex; align-items: center; gap: 12px; min-width: 0; }
.portal-user-name { max-width: 180px; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.portal-user-name small { display: block; color: var(--muted); font-size: 11px; }
.portal-icon-button { min-height: 40px; padding: 7px 12px; border: 1px solid var(--border); border-radius: 9px; background: transparent; color: var(--fg-soft); }
.portal-icon-button:hover { background: var(--surface-2); }
.portal-wrap { width: min(1160px,100%); margin: 0 auto; padding: clamp(24px,5vw,58px) clamp(16px,4vw,38px) 70px; }
.portal-eyebrow { color: var(--accent); font-size: 11px; letter-spacing: .12em; text-transform: uppercase; font-weight: 700; margin: 0 0 12px; }
.portal-hero { display: flex; align-items: flex-start; justify-content: space-between; gap: 24px; margin-bottom: 36px; }
.portal-hero h1 { margin: 0 0 12px; font-size: clamp(28px,4vw,42px); letter-spacing: -.045em; font-weight: 650; }
.portal-hero p:not(.portal-eyebrow) { color: var(--muted); max-width: 600px; margin: 0; }
.portal-pill { display: inline-flex; align-items: center; padding: 5px 10px; border: 1px solid var(--border); border-radius: 20px; font-size: 11px; color: var(--fg-soft); }
.portal-pill.good { color: var(--ok); border-color: color-mix(in srgb,var(--ok) 35%,transparent); }
.portal-pill.warn { color: var(--warn); }
.portal-book-grid { display: grid; grid-template-columns: repeat(auto-fit,minmax(min(100%,310px),1fr)); gap: 20px; }
.portal-book { display: flex; flex-direction: column; gap: 18px; min-height: 290px; padding: 26px; border: 1px solid var(--border); background: var(--surface); border-radius: 18px; position: relative; overflow: hidden; }
.portal-book::before { content: ''; position: absolute; width: 3px; left: 0; top: 28px; bottom: 28px; border-radius: 4px; background: var(--accent); }
.portal-book:nth-child(3n+2)::before { background: var(--accent-2); }
.portal-book h2 { font-size: 23px; letter-spacing: -.03em; margin: 0; }
.portal-book .book-edition { color: var(--muted); font-size: 12px; margin: -8px 0 0; }
.portal-book .book-progress { margin-top: auto; }
.portal-book .book-progress p { margin: 0 0 8px; display: flex; justify-content: space-between; gap: 8px; }
.portal-book .book-progress small { color: var(--muted); }
.portal-meter { height: 5px; border-radius: 9px; background: var(--surface-3); overflow: hidden; }
.portal-meter span { display: block; height: 100%; background: var(--accent); border-radius: inherit; }
.portal-book-footer { display: flex; justify-content: space-between; align-items: center; gap: 12px; color: var(--muted); font-size: 12px; }
.portal-empty { text-align: center; border: 1px dashed var(--border-strong); border-radius: 18px; padding: 60px 24px; background: var(--surface); color: var(--muted); }
.portal-empty h2 { color: var(--fg); margin-top: 0; }
.portal-empty .empty-mark { font-size: 36px; color: var(--accent); margin-bottom: 18px; }
.portal-login { display: grid; grid-template-columns: 1fr 1fr; align-items: center; width: min(960px,100%); margin: auto; gap: clamp(28px,7vw,90px); min-height: 90dvh; padding: 40px 28px; }
.portal-login-copy .brand-mark { width: 54px; height: 54px; font-size: 29px; margin-bottom: 38px; }
.portal-login-copy h1 { font-size: clamp(36px,5vw,58px); line-height: 1.05; letter-spacing: -.055em; margin: 0 0 25px; }
.portal-login-copy p { max-width: 320px; color: var(--muted); line-height: 1.8; }
.portal-form-card { padding: 30px; border: 1px solid var(--border); background: var(--surface); border-radius: 20px; box-shadow: var(--shadow); }
.portal-form-card h2 { margin: 0 0 8px; font-size: 25px; }
.portal-form-card > p { margin: 0 0 25px; color: var(--muted); font-size: 13px; }
.portal-form { display: grid; gap: 18px; }
.portal-field { display: grid; gap: 7px; color: var(--fg-soft); font-size: 12px; min-width: 0; }
.portal-field input, .portal-field select { width: 100%; min-width: 0; height: 43px; padding: 9px 12px; border: 1px solid var(--border-strong); border-radius: 8px; background: var(--bg-soft); color: var(--fg); font-size: 14px; }
.portal-field small { color: var(--muted); line-height: 1.5; }
.password-field { display: flex; gap: 6px; }
.password-field input { flex: 1; width: 0; }
.password-field button { padding: 5px 9px; border: 1px solid var(--border); border-radius: 8px; background: var(--surface-2); color: var(--fg-soft); font-size: 11px; }
.portal-form-error { color: var(--danger); font-size: 13px; line-height: 1.5; margin: 0; }
.portal-note { padding: 12px 15px; border-radius: 10px; background: var(--surface-2); color: var(--muted); font-size: 12px; line-height: 1.7; }
.portal-dialog { width: min(540px,calc(100vw - 24px)); padding: 28px; max-height: calc(100dvh - 30px); overflow: auto; color: var(--fg); background: var(--surface); border: 1px solid var(--border-strong); border-radius: 16px; box-shadow: var(--shadow); }
.portal-dialog::backdrop { background: rgb(0 0 0 / 65%); backdrop-filter: blur(4px); }
.portal-dialog h2 { margin: 0 0 10px; }
.dialog-heading { display: flex; align-items: flex-start; justify-content: space-between; gap: 14px; }
.dialog-heading button { color: var(--muted); padding: 0 5px; background: none; border: none; font-size: 24px; }
.portal-dialog .portal-note { margin-bottom: 20px; }
.portal-toast { position: fixed; bottom: 22px; left: 50%; transform: translateX(-50%); max-width: min(560px,calc(100vw - 32px)); padding: 12px 18px; border: 1px solid var(--border-strong); border-radius: 10px; background: var(--surface-2); color: var(--fg); box-shadow: var(--shadow); z-index: 200; font-size: 13px; }
.portal-tabs { display: flex; overflow-x: auto; gap: 6px; padding: 4px; background: var(--surface); border: 1px solid var(--border); border-radius: 12px; margin: 0 0 28px; }
.portal-tabs button { padding: 10px 17px; background: transparent; color: var(--muted); border: none; border-radius: 8px; white-space: nowrap; }
.portal-tabs button[aria-selected="true"] { background: var(--surface-3); color: var(--fg); }
.portal-section-heading { display: flex; gap: 15px; align-items: center; justify-content: space-between; margin: 0 0 22px; }
.portal-section-heading h2 { margin: 0; font-size: 22px; }
.portal-list { display: grid; gap: 12px; }
.portal-row { display: flex; align-items: center; justify-content: space-between; gap: 18px; background: var(--surface); border: 1px solid var(--border); border-radius: 12px; padding: 18px 20px; }
.portal-row h3 { margin: 0 0 4px; font-size: 16px; }
.portal-row p { margin: 3px 0; color: var(--muted); font-size: 12px; overflow-wrap: anywhere; }
.portal-row-actions { display: flex; flex-wrap: wrap; gap: 8px; justify-content: flex-end; }
.portal-row-actions .btn { font-size: 11px; min-height: 35px; }
.portal-row.is-inactive { opacity: .7; }
.admin-publication-editor { display: grid; gap: 20px; background: var(--surface); border: 1px solid var(--border); border-radius: 16px; padding: 25px; margin-bottom: 25px; }
.portal-form-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 18px; }
.portal-check-list { display: grid; gap: 8px; max-height: 340px; overflow: auto; border: 1px solid var(--border); border-radius: 10px; padding: 14px; }
.portal-check-list label, .portal-check-inline label { display: flex; align-items: flex-start; gap: 9px; font-size: 12px; color: var(--fg-soft); }
.portal-check-list input, .portal-check-inline input { margin: 3px 0 0; accent-color: var(--accent); width: 16px; height: 16px; flex: none; }
.portal-check-list label:has(input:disabled) { color: var(--muted); opacity: .7; }
.portal-check-inline { display: flex; flex-wrap: wrap; gap: 14px; }
.portal-table-wrap { overflow-x: auto; border: 1px solid var(--border); border-radius: 12px; }
.portal-table { width: 100%; border-collapse: collapse; background: var(--surface); text-align: left; font-size: 12px; }
.portal-table th { color: var(--muted); font-weight: 500; background: var(--surface-2); }
.portal-table th, .portal-table td { padding: 14px 16px; border-bottom: 1px solid var(--border); vertical-align: top; }
.portal-table th { white-space: nowrap; }
.portal-table small { display: block; color: var(--muted); margin-top: 4px; }
.portal-table tr:last-child td { border-bottom: 0; }
/* Reader: only the article scrolls, so the saved ratio does not include chrome. */
.portal-page[data-screen="reader"] { height: 100dvh; overflow: hidden; display: flex; flex-direction: column; }
.portal-page[data-screen="reader"] .portal-header { flex: none; min-height: 65px; padding-top: 10px; padding-bottom: 10px; }
.portal-page[data-screen="reader"] #portal { flex: 1; min-height: 0; display: flex; flex-direction: column; }
.reader-heading { flex: none; display: flex; align-items: center; gap: 15px; padding: 12px 20px; border-bottom: 1px solid var(--border); background: var(--surface); }
.reader-heading h1 { font-size: 15px; margin: 0; font-weight: 600; }
.reader-heading p { font-size: 11px; margin: 3px 0 0; color: var(--muted); }
.reader-heading .reader-summary { margin-left: auto; text-align: right; flex: none; font-size: 12px; color: var(--fg-soft); }
.reader-heading .reader-summary .portal-meter { width: 100px; margin: 6px 0 0 auto; }
.portal-page .reading-controls { flex: none; padding-left: 20px; padding-right: 20px; gap: 4px 16px; }
.portal-page .reading-controls-title { margin-right: 8px; }
.portal-page .reading-controls input[type="range"] { width: 88px; }
.reader-shell { display: grid; grid-template-columns: 265px minmax(0,1fr); flex: 1; min-height: 0; }
.reader-sidebar { overflow-y: auto; border-right: 1px solid var(--border); padding: 18px 12px 30px; background: var(--surface); }
.reader-sidebar h2 { font-size: 11px; text-transform: uppercase; letter-spacing: .09em; color: var(--muted); padding: 0 10px 8px; }
.reader-topic-group { margin: 22px 10px 9px; color: var(--muted); font-size: 11px; font-weight: 600; }
.reader-topic { display: flex; width: 100%; gap: 10px; padding: 11px 10px; text-align: left; line-height: 1.45; color: var(--fg-soft); border: 1px solid transparent; border-radius: 9px; background: transparent; font-size: 12px; align-items: flex-start; }
.reader-topic:hover { background: var(--surface-2); }
.reader-topic[aria-current="true"] { background: var(--accent-subtle,rgba(120,169,255,.12)); border-color: var(--accent-border,rgba(120,169,255,.3)); color: var(--fg); }
.reader-topic-symbol { display: inline-grid; width: 18px; height: 18px; flex: none; font-size: 13px; place-items: center; color: var(--muted); }
.reader-topic-symbol.done { color: var(--ok); }
.reader-topic .review-dot { display: block; color: var(--warn); margin-top: 4px; font-size: 10px; }
.reader-scroll { overflow: auto; min-width: 0; padding: 26px clamp(16px,3.5vw,55px) 44px; scroll-behavior: auto; overscroll-behavior: contain; }
.reader-document { max-width: 1010px; margin: 0 auto; }
.reader-materials { display: flex; gap: 7px; overflow-x: auto; margin-bottom: 17px; padding: 2px 2px 7px; }
.reader-materials button { flex: none; border: 1px solid var(--border); border-radius: 8px; color: var(--fg-soft); background: var(--surface); padding: 7px 12px; font-size: 12px; }
.reader-materials button[aria-selected="true"] { border-color: var(--accent); color: var(--accent); }
.portal-page .reader-viewer { width: 100%; min-height: 260px; font-size: 15px; line-height: 1.8; }
.reader-viewer img { max-width: 100% !important; height: auto; }
.reader-viewer .formula-grid { min-width: 0; }
.reader-viewer table { display: block; overflow: auto; max-width: 100%; }
.reader-viewer :is(pre,mjx-container) { max-width: 100%; overflow-x: auto; }
.reader-viewer mjx-container[display="true"] { overflow-y: hidden; }
.reader-bottom { padding: 22px 0 10px; display: flex; flex-wrap: wrap; gap: 10px; align-items: center; }
.reader-bottom .btn { white-space: normal; min-height: 42px; }
.reader-bottom .next-topic { margin-left: auto; }
.reader-status { font-size: 11px; min-height: 22px; color: var(--muted); display: flex; gap: 8px; align-items: center; padding: 0 3px; }
.reader-status button { background: transparent; border: 0; color: var(--accent); text-decoration: underline; padding: 0; }
.reader-status[data-state="error"] { color: var(--danger); }
.reader-review[aria-pressed="true"] { border-color: var(--warn); color: var(--warn); }
.reader-menu-toggle { display: none; }
@media (max-width: 860px) {
  .portal-header { padding: 12px 16px; }
  .portal-login { grid-template-columns: 1fr; gap: 30px; width: min(460px,100%); min-height: auto; padding: 35px 18px; }
  .portal-login-copy .brand-mark { width: 38px; height: 38px; font-size: 20px; margin-bottom: 20px; }
  .portal-login-copy h1 { font-size: 37px; margin-bottom: 12px; }
  .portal-login-copy p { font-size: 13px; }
  .portal-form-card { padding: 24px; }
  .portal-user-name { max-width: 120px; font-size: 12px; }
  .portal-user { gap: 7px; }
  .reader-heading { padding: 10px 14px; gap: 10px; }
  .reader-heading .reader-summary { display: none; }
  .reader-menu-toggle { display: inline-flex; margin-left: auto; }
  .reader-shell { display: flex; flex-direction: column; }
  .reader-sidebar { display: none; max-height: 35dvh; flex: none; border-right: 0; border-bottom: 1px solid var(--border); padding: 7px 10px; }
  .reader-shell.menu-open .reader-sidebar { display: block; }
  .reader-sidebar h2 { display: none; }
  .reader-scroll { flex: 1; min-height: 0; padding: 16px 14px 30px; }
  .portal-page .reading-controls { padding: 7px 14px; gap: 2px 12px; }
  .portal-page .reading-controls-title { display: none; }
  .portal-page .reading-controls label { gap: 5px; }
  .portal-page .reading-controls input[type="range"] { width: 73px; }
  .portal-page .reading-controls .reading-save-note { display: none; }
  .portal-row { align-items: flex-start; flex-wrap: wrap; }
  .portal-row-actions { justify-content: flex-start; }
  .portal-form-grid { grid-template-columns: 1fr; }
  .portal-hero { flex-wrap: wrap; }
}
@media (max-width: 420px) {
  .portal-brand strong { font-size: 16px; }
  .portal-brand small { font-size: 10px; }
  .portal-brand .brand-mark { width: 30px; height: 30px; font-size: 18px; }
  .portal-user-name { display: none; }
  .portal-user .portal-icon-button { font-size: 11px; padding: 7px 8px; min-height: 37px; }
  .portal-book { padding: 23px 20px; }
  .reader-heading h1 { font-size: 12px; max-width: 160px; }
  .reader-heading .portal-icon-button { padding: 7px 9px; font-size: 11px; }
  .portal-page .reading-controls { gap: 0 9px; font-size: 10px; }
  .portal-page .reading-controls input[type="range"] { width: 63px; }
  .portal-page .reading-controls .reading-paper-control output { min-width: 64px; font-size: 9px; }
  .reader-bottom .next-topic { margin-left: 0; width: 100%; }
  .portal-section-heading { flex-wrap: wrap; }
  .portal-tabs button { padding: 9px 11px; font-size: 12px; }
}
@media (prefers-reduced-motion: reduce) { .portal-page *, .portal-page *::before { animation: none !important; transition: none !important; } }


/* Appearance controls float above the reader instead of taking a full toolbar row. */
.reader-heading .reader-appearance-toggle { flex: none; white-space: nowrap; min-height: 33px; padding: 6px 10px; font-size: 11px; }
.reader-appearance-toggle[aria-expanded="true"] { border-color: var(--accent); color: var(--accent); }
.portal-page .reader-appearance-panel { position: fixed; inset: auto; margin: 0; width: min(360px,calc(100vw - 16px)); max-height: calc(100dvh - 16px); overflow-y: auto; overscroll-behavior: contain; display: grid; grid-template-columns: minmax(0,1fr) 30px; gap: 10px 8px; padding: 18px; border: 1px solid var(--border-strong); border-radius: 13px; background: var(--surface); color: var(--fg-soft); box-shadow: var(--shadow); font-size: 12px; }
.portal-page .reader-appearance-panel:not(:popover-open) { display: none; }
.portal-page .reader-appearance-panel .reading-controls-title { display: block; grid-column: 1 / -1; margin: 0 0 4px; font-size: 13px; }
.portal-page .reader-appearance-panel label { display: grid; grid-column: 1 / -1; grid-template-columns: 64px minmax(0,1fr) 34px; gap: 10px; min-height: 34px; }
.portal-page .reader-appearance-panel label[for="tone-hue"] { grid-column: 1; }
.portal-page .reader-appearance-panel input[type="range"] { width: 100%; min-width: 0; height: 28px; }
.portal-page .reader-appearance-panel .reading-hue-reset { grid-column: 2; grid-row: 4; margin: 0; min-width: 30px; align-self: center; }
.portal-page .reader-appearance-panel .reading-paper-control { grid-template-columns: 64px minmax(0,1fr) 90px; }
.portal-page .reader-appearance-panel .reading-paper-control output { min-width: 0; font-size: 10px; white-space: normal; }
.portal-page .reader-appearance-panel .reading-borders { grid-column: 1 / -1; justify-self: start; margin-top: 4px; }
.portal-page .reader-appearance-panel .reading-save-note { display: block; grid-column: 1 / -1; margin: 0; padding-top: 8px; border-top: 1px solid var(--border); font-size: 10px; color: var(--muted); white-space: normal; }
.reader-heading .reader-appearance-panel + .topic-chat-tools { margin-left: 0; }
@media (max-width: 1100px) { .reader-heading .reader-appearance-toggle { margin-left: auto; } }
.portal-page .reader-heading .reader-appearance-panel + .topic-chat-tools { width: auto; }

/* Material tabs stay in the fixed reader heading while the article scrolls. */
.portal-page .reader-heading .reader-book-title { flex: 0 1 240px; min-width: 100px; }
.reader-book-title h1, .reader-book-title p { overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.portal-page .reader-heading > #readerMaterials { flex: 1 1 0; min-width: 0; margin: 0; padding: 3px 2px; align-items: center; overscroll-behavior-x: contain; scrollbar-width: thin; }
.reader-heading .reader-materials button { font-size: 11px; padding: 8px 10px; white-space: nowrap; }
@media (max-width: 860px) {
  .portal-page .reader-heading .reader-book-title { flex: 1; min-width: 90px; }
  .portal-page .reader-heading > #readerMaterials { order: 10; flex: 1 0 100%; width: 100%; }
}