:root {
  --ink: #183b3a;
  --muted: #647774;
  --brand: #155b55;
  --brand-dark: #10443f;
  --brand-soft: #e5f1ed;
  --accent: #d8e7b0;
  --page: #f5f7f3;
  --surface: #ffffff;
  --line: #dce5df;
  --link: #155b55;
  --link-hover: #10443f;
  --on-brand: #ffffff;
  --on-brand-hover: #ffffff;
  --brand-on-soft: #155b55;
  --on-accent: #193f31;
  --sidebar: #133e3a;
  --sidebar-ink: #eaf2ed;
  --sidebar-muted: #b4cdc2;
  --sidebar-hover: #214c46;
  --sidebar-line: #44675c;
  --sidebar-focus: #d8e7b0;
  --focus: #155b55;
  --progress: #65956b;
  --danger: #a63737;
  --danger-soft: #fff0ed;
  --warn: #815d17;
  --warn-soft: #fff7df;
  --radius: 14px;
  --shadow: 0 7px 30px rgb(27 66 56 / 5%);
}
* { box-sizing: border-box; }
body { margin: 0; color: var(--ink); background: var(--page); font: 15px/1.55 -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif; }
a { color: var(--link); text-underline-offset: 3px; }
a:hover { color: var(--link-hover); }
button, input, select, textarea { font: inherit; }
button, a, input, select, textarea, summary { -webkit-tap-highlight-color: transparent; }
:focus-visible { outline: 3px solid var(--focus); outline-offset: 3px; }
button { cursor: pointer; }
button:disabled { cursor: default; opacity: .55; }
img, iframe { max-width: 100%; }
h1, h2, h3, h4 { line-height: 1.2; letter-spacing: -.025em; }
h1 { font-size: clamp(1.8rem, 4vw, 2.4rem); margin: 0 0 10px; font-weight: 700; }
h2 { font-size: 1.3rem; margin: 0 0 14px; }
h3 { font-size: 1.04rem; margin: 0 0 10px; }
p { margin: 0 0 16px; }
p:last-child { margin-bottom: 0; }
small, .small { font-size: .85rem; }
.muted, .hint { color: var(--muted); }
.hint { font-size: .86rem; margin-top: 6px; }
.settings-fields { margin: 0; padding: 0; border: 0; min-width: 0; }
.settings-fields:disabled { opacity: .75; }
.settings-access-note { font-size: .86rem; color: var(--muted); margin: -7px 0 23px; }
.admin-access-card { display: flex; justify-content: space-between; align-items: center; gap: 24px; }
.admin-access-summary { display: flex; gap: 17px; align-items: flex-start; min-width: 0; }
.admin-access-summary > div:last-child { min-width: 0; }
.admin-access-mark { display: grid; place-items: center; width: 46px; height: 49px; flex: 0 0 46px; border-radius: 11px 11px 11px 3px; color: var(--brand-on-soft); background: var(--brand-soft); font: 700 1.2rem Georgia, serif; }
.admin-access-card .eyebrow { margin-bottom: 7px; }
.admin-access-card h2 { display: flex; gap: 11px; align-items: center; flex-wrap: wrap; margin-bottom: 8px; }
.admin-access-card h2 .badge { letter-spacing: normal; }
.admin-access-card p { font-size: .87rem; margin-bottom: 7px; }
.admin-access-card .hint { font-size: .78rem; margin-bottom: 0; }
.admin-access-card > .button { flex: 0 0 auto; }
.admin-group-layout { display: grid; grid-template-columns: minmax(0, 1.65fr) minmax(280px, 1fr); align-items: start; gap: 23px; }
.admin-group-members .card-header { flex-wrap: wrap; }
.admin-group-members .table-wrap { position: relative; }
.admin-member-table td:first-child { min-width: 170px; overflow-wrap: anywhere; }
.admin-member-table td .badge { white-space: normal; }
.admin-member-table td:first-child .badge { margin-left: 5px; }
.admin-member-actions { min-width: 113px; }
.admin-member-actions .sub { font-size: .7rem; }
.admin-group-side { min-width: 0; }
.admin-group-side select { text-overflow: ellipsis; }
.admin-group-help h2 { font-size: 1.05rem; }
.admin-group-help ul { margin: 0 0 18px; padding-left: 20px; font-size: .87rem; }
.admin-group-help li + li { margin-top: 8px; }
.account-admin-guidance { background: var(--page); border: 1px solid var(--line); border-radius: 8px; padding: 14px 16px; margin: 17px 0; font-size: .87rem; }
.account-admin-guidance .hint { margin: 5px 0 7px; }
@media (max-width: 1150px) {
    .admin-group-layout { grid-template-columns: minmax(0, 1fr); }
    .admin-group-side { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 22px; }
    .admin-access-card { align-items: flex-start; flex-direction: column; }
}
@media (max-width: 720px) {
    .admin-group-side { grid-template-columns: minmax(0, 1fr); gap: 0; }
    .admin-access-summary { gap: 12px; }
    .admin-access-mark { width: 36px; height: 40px; flex-basis: 36px; }
    .admin-access-card > .button { white-space: normal; text-align: center; }
}
.resource-list { list-style: none; padding: 0; margin: 0; }
.resource-list li { display: flex; justify-content: space-between; align-items: center; gap: 16px; padding: 14px 0; border-bottom: 1px solid var(--line); }
.resource-list li:last-child { border-bottom: 0; }
.resource-info { display: flex; align-items: center; gap: 13px; min-width: 0; }
.resource-info > div { min-width: 0; overflow-wrap: anywhere; }
.resource-info a { font-weight: 650; }
.file-type { border: 1px solid var(--line); border-radius: 8px; background: var(--brand-soft); color: var(--brand-on-soft); padding: 12px 8px; font-size: .69rem; font-weight: 800; letter-spacing: .04em; flex: 0 0 auto; }
.csv-columns { font-size: .84rem; }
.csv-columns th, .csv-columns td { white-space: normal; }
.csv-preview { white-space: pre-wrap; overflow-wrap: anywhere; padding: 14px; background: var(--page); border: 1px solid var(--line); border-radius: 8px; font-size: .82rem; }
.book-cover-link { display: block; flex: 0 0 160px; width: 160px; max-width: 100%; border-radius: 8px; background: var(--page); padding: 10px; border: 1px solid var(--line); }
.book-cover { display: block; width: 100%; height: auto; max-height: 230px; object-fit: contain; }
.course-books { display: flex; align-items: flex-start; flex-wrap: wrap; gap: 24px; width: max-content; max-width: 100%; }
.course-book { flex: 0 0 30mm; width: 30mm; min-width: 0; text-align: center; }
.course-book .book-kind { display: flex; align-items: flex-end; justify-content: center; min-height: 2.4em; margin: 0 0 6px; font-size: .72rem; line-height: 1.2; letter-spacing: 0; }
.course-book .book-cover-link { width: 30mm; height: 40mm; padding: 0; border: 0; border-radius: 2px; background: transparent; }
.course-book .book-cover { width: 30mm; height: 40mm; max-height: none; object-fit: contain; object-position: center bottom; }
.book-buy-link { display: flex; align-items: center; justify-content: center; gap: 4px; margin-top: 6px; padding: 2px 0; font-size: .8rem; line-height: 1.4; font-weight: 650; }
.course-book .book-title { margin: 6px 0 0; font-size: .72rem; line-height: 1.4; overflow-wrap: anywhere; }
.book-settings-layout.has-cover { display: grid; grid-template-columns: 160px minmax(0, 1fr); gap: 28px; }
.book-settings-layout form { min-width: 0; }
.book-current-cover .hint { text-align: center; }
.book-remove { border-top: 1px solid var(--line); padding-top: 18px; }
.site-icon-card { max-width: 1100px; }
.site-icon-settings { display: grid; grid-template-columns: 230px minmax(0, 1fr); gap: 36px; padding-top: 10px; align-items: start; }
.site-icon-preview-panel { text-align: center; min-width: 0; }
.site-icon-preview-frame { display: grid; place-items: center; min-height: 176px; border: 1px solid var(--line); background: var(--page); border-radius: 12px; }
.site-icon-preview-frame img { display: block; width: 112px; height: 112px; object-fit: contain; }
.site-icon-preview-caption { color: var(--muted); font-size: .8rem; margin: 9px 0 22px; }
.site-icon-tab-preview { display: flex; align-items: center; gap: 9px; padding: 11px 13px; border: 1px solid var(--line); background: var(--surface); border-radius: 10px 10px 0 0; font-size: .78rem; text-align: left; }
.site-icon-tab-preview img { display: block; flex: 0 0 16px; width: 16px; height: 16px; object-fit: contain; }
.site-icon-tab-close { margin-left: auto; color: var(--muted); font-size: 1rem; line-height: 1; }
.site-icon-preview-panel > .hint { margin-top: 7px; font-size: .74rem; }
.site-icon-controls { min-width: 0; padding-top: 2px; }
.site-icon-controls input[type=file] { max-width: 100%; }
.site-icon-reset { border-top: 1px solid var(--line); margin-top: 25px; padding-top: 20px; }
.site-icon-reset .hint { margin: 0 0 13px; overflow-wrap: anywhere; }
.site-theme-card { max-width: 1100px; margin-top: 30px; }
.theme-import-form { padding: 19px 20px; background: var(--page); border: 1px solid var(--line); border-radius: 10px; margin: 22px 0 27px; }
.theme-import-form .field { margin: 0; }
.theme-url-row { display: flex; gap: 10px; align-items: stretch; }
.theme-url-row input { min-width: 0; flex: 1; }
.theme-url-row .button { flex: 0 0 auto; }
.theme-status:empty { display: none; }
.theme-status { min-height: 1.5em; overflow-wrap: anywhere; }
.theme-status.is-error { color: #873b32; background: #fff0ed; border-radius: 6px; padding: 9px 11px; }
.theme-palette-result { margin-top: 19px; border-top: 1px solid var(--line); padding-top: 17px; }
.theme-palette-result[hidden] { display: none; }
.theme-palette-label { font-size: .8rem; font-weight: 650; margin: 0 0 10px; }
.theme-palette { display: flex; flex-wrap: wrap; gap: 9px; }
.theme-palette-swatch { display: inline-flex; align-items: center; gap: 7px; border: 1px solid var(--line); padding: 5px 9px 5px 5px; border-radius: 7px; font: .72rem ui-monospace, monospace; background: var(--surface); }
.theme-palette-swatch > span { width: 20px; height: 20px; border: 1px solid rgb(127 127 127 / 30%); border-radius: 4px; }
.theme-settings-layout { display: grid; grid-template-columns: minmax(280px, .85fr) minmax(360px, 1.15fr); align-items: start; gap: 30px; }
.theme-color-fields { margin: 0; padding: 0; border: 0; }
.theme-color-fields legend { padding: 0; margin-bottom: 2px; }
.theme-color-fields > .hint { margin: 0 0 18px; }
.theme-color-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); column-gap: 18px; }
.theme-color-field { min-width: 0; margin-bottom: 19px; }
.theme-color-inputs { display: flex; align-items: center; gap: 7px; }
.theme-color-inputs input[type=color] { flex: 0 0 44px; width: 44px; height: 42px; padding: 4px; cursor: pointer; }
.theme-color-inputs input[type=text] { min-width: 0; font: .8rem ui-monospace, SFMono-Regular, Consolas, monospace; padding: 10px 8px; }
.theme-color-inputs input[type=color]::-webkit-color-swatch-wrapper { padding: 0; }
.theme-color-inputs input[type=color]::-webkit-color-swatch { border: 0; border-radius: 3px; }
.theme-color-field .hint { font-size: .73rem; margin-top: 5px; }
.theme-save-actions { margin: 15px 0 11px; }
.theme-preview-panel { min-width: 0; }
.theme-preview-label { display: flex; align-items: center; justify-content: space-between; margin-bottom: 12px; gap: 10px; font-size: .82rem; }
.theme-preview-label > span { font-size: .7rem; color: var(--muted); }
.theme-preview { display: grid; grid-template-columns: 112px minmax(0, 1fr); min-height: 333px; border: 1px solid var(--line); border-radius: 10px; overflow: hidden; color: var(--ink); background: var(--page); box-shadow: 0 5px 20px rgb(0 0 0 / 5%); }
.theme-preview-nav { display: flex; flex-direction: column; padding: 17px 10px; gap: 5px; color: var(--sidebar-ink); background: var(--sidebar); }
.theme-preview-brand { display: flex; align-items: center; gap: 6px; margin-bottom: 17px; font-size: .6rem; line-height: 1.2; }
.theme-preview-brand > span { display: grid; place-items: center; flex: 0 0 23px; height: 27px; border-radius: 5px 5px 5px 1px; background: var(--accent); color: var(--on-accent); font: 700 .65rem Georgia, serif; }
.theme-preview-nav-item { display: block; font-size: .62rem; padding: 7px; border-radius: 5px; }
.theme-preview-nav-item.is-active { background: var(--accent); color: var(--on-accent); font-weight: 700; }
.theme-preview-nav-caption { color: var(--sidebar-muted); font-size: .54rem; line-height: 1.5; margin-top: auto; padding: 30px 5px 0; }
.theme-preview-main { min-width: 0; }
.theme-preview-topbar { padding: 10px 17px; background: var(--surface); color: var(--muted); border-bottom: 1px solid var(--line); font-size: .58rem; }
.theme-preview-content { padding: 20px 18px; }
.theme-preview-eyebrow { text-transform: uppercase; letter-spacing: .07em; color: var(--muted); font-size: .5rem; margin: 0 0 6px; font-weight: 700; }
.theme-preview h3 { font-size: 1.12rem; margin: 0 0 7px; }
.theme-preview-intro { font-size: .63rem; line-height: 1.45; color: var(--muted); margin-bottom: 15px; }
.theme-preview-course { padding: 16px; border: 1px solid var(--line); border-radius: 8px; background: var(--surface); }
.theme-preview-tag { display: inline-flex; font-size: .52rem; padding: 2px 6px; border-radius: 12px; background: var(--brand-soft); color: var(--brand-on-soft); margin-bottom: 9px; }
.theme-preview h4 { font-size: .88rem; margin: 0 0 8px; }
.theme-preview-course > p { font-size: .62rem; color: var(--muted); line-height: 1.5; margin: 0 0 9px; }
.theme-preview-link { font-size: .6rem; color: var(--link); text-decoration: underline; text-underline-offset: 2px; }
.theme-preview-progress-label { display: flex; align-items: center; justify-content: space-between; gap: 6px; color: var(--muted); margin-top: 16px; font-size: .55rem; }
.theme-preview-progress { background: var(--line); border-radius: 20px; height: 5px; margin-top: 6px; }
.theme-preview-progress > span { display: block; width: 67%; height: 100%; border-radius: inherit; background: var(--progress); }
.theme-preview-button { display: inline-flex; padding: 7px 10px; border-radius: 5px; background: var(--brand); color: var(--on-brand); font-size: .6rem; font-weight: 700; margin-top: 17px; }
.theme-preview-caption { font-size: .75rem; margin-top: 11px; line-height: 1.6; }
.theme-restore { display: flex; align-items: center; justify-content: space-between; flex-wrap: wrap; gap: 16px; border-top: 1px solid var(--line); margin-top: 27px; padding-top: 23px; }
.theme-restore h3 { font-size: .9rem; margin-bottom: 5px; }
.theme-restore .hint { margin: 0; }
@media (max-width: 1100px) {
    .theme-settings-layout { grid-template-columns: minmax(0, 1fr); }
    .theme-preview-panel { order: -1; }
    .theme-preview { grid-template-columns: 130px minmax(0, 1fr); }
}
@media (max-width: 720px) {
    .site-icon-settings { grid-template-columns: minmax(0, 1fr); gap: 26px; }
    .site-icon-preview-panel { width: 230px; max-width: 100%; margin: 0 auto; }
    .site-icon-card .card-header { flex-wrap: wrap; }
    .site-theme-card .card-header { flex-wrap: wrap; }
    .theme-import-form { padding: 16px; }
    .theme-url-row { flex-direction: column; }
    .theme-color-grid { column-gap: 12px; }
    .theme-preview { grid-template-columns: 88px minmax(0, 1fr); }
    .theme-preview-nav { padding: 14px 7px; }
    .theme-preview-brand { flex-direction: column; align-items: flex-start; gap: 8px; padding-left: 5px; }
    .theme-preview-brand > span { flex-basis: auto; width: 23px; }
    .theme-preview-content { padding: 17px 12px; }
    .theme-preview-course { padding: 12px; }
    .theme-color-inputs input[type=color] { flex-basis: 37px; width: 37px; }
    .theme-color-inputs input[type=text] { font-size: .73rem; padding: 10px 5px; }
}
.eyebrow { text-transform: uppercase; font-size: .7rem; letter-spacing: .15em; font-weight: 800; color: var(--muted); margin: 0 0 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; }
.skip-link { position: fixed; z-index: 100; left: 12px; top: -60px; background: var(--surface); padding: 10px 16px; border-radius: 6px; }
.skip-link:focus { top: 12px; }
.app-shell { min-height: 100vh; display: grid; grid-template-columns: 224px minmax(0, 1fr); }
.sidebar { background: var(--sidebar); color: var(--sidebar-ink); display: flex; flex-direction: column; padding: 29px 20px 20px; min-height: 100vh; }
.brand { display: flex; align-items: center; gap: 11px; text-decoration: none; color: var(--sidebar-ink); margin-bottom: 32px; line-height: 1.15; }
.brand:hover { color: var(--sidebar-ink); }
.brand-mark { width: 39px; height: 43px; background: var(--accent); border-radius: 10px 10px 10px 2px; color: var(--on-accent); display: grid; place-items: center; font: 700 1rem Georgia, serif; flex: 0 0 auto; }
.brand strong { font-size: 1.02rem; }
.brand small { display: block; color: var(--sidebar-muted); font-size: .68rem; letter-spacing: .09em; text-transform: uppercase; margin-top: 4px; }
.nav-label { color: var(--sidebar-muted); font-size: .68rem; font-weight: 700; letter-spacing: .13em; text-transform: uppercase; margin: 0 12px 10px; }
.nav { display: grid; gap: 5px; }
.nav a { color: var(--sidebar-ink); text-decoration: none; padding: 11px 13px; border-radius: 8px; font-size: .93rem; }
.nav a:hover { background: var(--sidebar-hover); color: var(--sidebar-ink); }
.nav a.active { background: var(--accent); color: var(--on-accent); font-weight: 700; }
.sidebar :focus-visible, .login-aside :focus-visible { outline-color: var(--sidebar-focus); }
.sidebar-footer { margin-top: auto; padding: 30px 10px 0; }
.sidebar-footer > div { min-width: 0; }
.sidebar-footer > form { flex: 0 0 auto; }
.sidebar-footer .small { color: var(--sidebar-muted); }
.sidebar-user { font-weight: 650; overflow-wrap: anywhere; }
.sidebar-role { color: var(--sidebar-muted); font-size: .76rem; margin-top: 2px; }
.sidebar-account { display: inline-block; color: var(--sidebar-muted); font-size: .72rem; margin-top: 7px; }
.sidebar-account:hover { color: var(--sidebar-ink); }
.sidebar .logout { border: 1px solid var(--sidebar-line); color: var(--sidebar-ink); background: transparent; padding: 6px 12px; font-size: .78rem; border-radius: 6px; margin-top: 12px; }
.main-column { min-width: 0; }
.topbar { min-height: 68px; border-bottom: 1px solid var(--line); background: var(--surface); padding: 17px 36px; display: flex; align-items: center; justify-content: space-between; gap: 15px; }
.topbar-label { color: var(--muted); font-size: .85rem; }
.pilot { display: inline-flex; align-items: center; gap: 7px; border: 1px solid var(--line); padding: 4px 10px; border-radius: 99px; font-size: .73rem; color: var(--muted); }
.pilot::before { content: ""; width: 6px; height: 6px; background: var(--progress); border-radius: 50%; }
.main-content { padding: 32px 36px 50px; max-width: 1440px; margin: auto; }
.page-head { margin-bottom: 27px; display: flex; justify-content: space-between; align-items: flex-start; gap: 20px; }
.page-head p { color: var(--muted); max-width: 740px; }
.page-head > div { min-width: 0; overflow-wrap: anywhere; }
.page-head .actions { flex: 0 0 auto; max-width: 100%; }
.course-head { display: grid; grid-template-columns: minmax(0, 1fr); column-gap: 28px; }
.course-head.has-books, .course-head.has-settings { grid-template-columns: minmax(0, 1fr) auto; }
.course-head.has-books.has-settings { grid-template-columns: minmax(0, 1fr) auto auto; }
.course-head .course-settings { justify-self: end; align-self: start; }
.breadcrumb { font-size: .82rem; color: var(--muted); margin-bottom: 16px; }
.breadcrumb a { color: var(--muted); }
.card { background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius); padding: 24px; box-shadow: var(--shadow); margin-bottom: 22px; min-width: 0; }
.card-header { display: flex; justify-content: space-between; align-items: flex-start; gap: 14px; margin-bottom: 16px; }
.card-header h2, .card-header h3 { margin-bottom: 3px; }
.card-header p { color: var(--muted); font-size: .85rem; }
.grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 22px; }
.grid.three { grid-template-columns: repeat(3, minmax(0, 1fr)); }
.grid .card { margin-bottom: 0; }
.stack > * + * { margin-top: 20px; }
.mb { margin-bottom: 24px; }
.mt { margin-top: 22px; }
.stats { display: grid; grid-template-columns: repeat(auto-fit, minmax(155px, 1fr)); gap: 16px; margin-bottom: 25px; }
.stat { border: 1px solid var(--line); border-radius: 12px; padding: 19px 21px; background: var(--surface); }
.stat span { color: var(--muted); font-size: .81rem; }
.stat strong { display: block; font-size: 2rem; line-height: 1.2; margin-top: 8px; font-weight: 650; letter-spacing: -.03em; }
.stat .stat-detail { display: block; margin-top: 5px; font-size: .73rem; }
.table-wrap { overflow-x: auto; }
table { width: 100%; border-collapse: collapse; font-size: .88rem; }
th { text-align: left; padding: 11px 12px; background: var(--page); color: var(--muted); text-transform: uppercase; letter-spacing: .055em; font-size: .68rem; font-weight: 750; white-space: nowrap; }
td { padding: 14px 12px; border-bottom: 1px solid var(--line); vertical-align: middle; }
tr:last-child td { border-bottom: 0; }
td strong { font-weight: 650; }
td .sub { display: block; font-size: .78rem; color: var(--muted); margin-top: 3px; }
.table-actions { display: flex; flex-wrap: wrap; align-items: center; gap: 8px; }
.button, button.button { display: inline-flex; justify-content: center; align-items: center; gap: 7px; min-height: 40px; padding: 9px 16px; border-radius: 8px; background: var(--brand); color: var(--on-brand); border: 1px solid var(--brand); font-weight: 650; font-size: .85rem; text-decoration: none; line-height: 1.25; white-space: nowrap; }
.button:hover { background: var(--brand-dark); color: var(--on-brand-hover); border-color: var(--brand-dark); }
.button.secondary { color: var(--link); background: var(--surface); border-color: var(--line); }
.button.secondary:hover { background: var(--brand-soft); color: var(--brand-on-soft); }
.button.small { padding: 7px 11px; min-height: 32px; font-size: .76rem; }
.button.danger { background: #fff; color: var(--danger); border-color: #e8c4bd; }
.button.danger:hover { background: var(--danger-soft); }
.button.full { width: 100%; }
.actions { display: flex; align-items: center; flex-wrap: wrap; gap: 9px; }
.actions form { margin: 0; }
.inline-form { display: inline; }
.link-button { border: 0; background: none; color: var(--link); padding: 0; text-decoration: underline; text-underline-offset: 3px; font: inherit; }
.badge { display: inline-flex; padding: 3px 9px; border-radius: 99px; background: var(--page); color: var(--muted); font-size: .7rem; font-weight: 700; white-space: nowrap; }
.badge.success { background: #e1f0e4; color: #23623b; }
.badge.warning { background: #fff3d8; color: #805a15; }
.badge.danger { background: #fbe7e4; color: #9e3a35; }
.badge.teal { background: var(--brand-soft); color: var(--brand-on-soft); }
.notice { border: 1px solid #bed7c7; background: #edf6ef; color: #28563e; border-radius: 10px; padding: 15px 18px; margin-bottom: 22px; font-size: .9rem; }
.notice.error { border-color: #efc8c0; background: var(--danger-soft); color: #873b32; }
.notice.warning { border-color: #e9dcae; background: var(--warn-soft); color: var(--warn); }
.notice ul { margin: 6px 0 0; padding-left: 22px; }
.notice a, .notice a:hover { color: inherit; }
.empty { padding: 34px 20px; text-align: center; border: 1px dashed var(--line); border-radius: 12px; background: var(--surface); }
.empty h2, .empty h3 { margin-bottom: 8px; }
.empty p { color: var(--muted); max-width: 520px; margin-left: auto; margin-right: auto; }
.field { margin-bottom: 18px; }
.field > label, .field > .label { display: block; font-size: .83rem; font-weight: 700; margin-bottom: 7px; }
input:not([type=checkbox]):not([type=radio]), select, textarea { display: block; width: 100%; border: 1px solid var(--line); border-radius: 7px; padding: 10px 12px; color: var(--ink); background: var(--surface); min-height: 42px; }
input:focus, select:focus, textarea:focus { border-color: var(--focus); outline-color: var(--focus); }
input[type=checkbox], input[type=radio] { width: 17px; height: 17px; accent-color: var(--brand); flex: 0 0 auto; margin: 2px 0 0; }
textarea { resize: vertical; min-height: 110px; }
fieldset { border: 1px solid var(--line); border-radius: 10px; padding: 18px; margin: 0 0 20px; min-width: 0; }
legend { font-weight: 700; font-size: .92rem; padding: 0 7px; }
.form-row { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 18px; }
.form-row.three { grid-template-columns: repeat(3, minmax(0, 1fr)); }
.form-row .field:last-child { margin-bottom: 18px; }
.check { display: flex; align-items: flex-start; gap: 10px; font-size: .9rem; padding: 8px 0; }
.check span { min-width: 0; }
.check small { display: block; color: var(--muted); margin-top: 2px; }
.check-list { max-height: 290px; overflow-y: auto; padding: 2px 10px; border: 1px solid var(--line); border-radius: 7px; }
.form-narrow { max-width: 760px; }
.form-footer { border-top: 1px solid var(--line); padding-top: 20px; margin-top: 6px; display: flex; flex-wrap: wrap; gap: 10px; align-items: center; }
.course-card { display: flex; flex-direction: column; }
.course-card .actions { margin-top: auto; padding-top: 18px; }
.course-card .course-topline { display: flex; justify-content: space-between; align-items: center; margin-bottom: 18px; gap: 10px; }
.course-card h2 { font-size: 1.2rem; }
.course-card h2 a { text-decoration: none; color: var(--ink); }
.course-card p { font-size: .9rem; color: var(--muted); }
.course-card-summary { display: flex; flex-wrap: wrap; align-items: flex-start; gap: 16px; margin-bottom: 16px; }
.course-card-description { flex: 1 1 180px; min-width: 0; overflow-wrap: anywhere; }
.course-card-cover { display: block; flex: 0 0 auto; width: 30mm; height: 40mm; object-fit: contain; object-position: center top; }
.course-meta { display: flex; flex-wrap: wrap; gap: 14px; font-size: .77rem; color: var(--muted); margin-top: 12px; }
.progress-track { height: 7px; background: var(--line); border-radius: 99px; overflow: hidden; margin-top: 8px; }
.progress-track > span { display: block; height: 100%; background: var(--progress); border-radius: inherit; }
.progress-label { display: flex; justify-content: space-between; color: var(--muted); font-size: .78rem; margin-top: 13px; }
.lesson-list { list-style: none; padding: 0; margin: 0; }
.lesson-list li { display: flex; align-items: center; justify-content: space-between; gap: 14px; padding: 16px 0; border-bottom: 1px solid var(--line); }
.lesson-list li:last-child { border: 0; }
.lesson-list .lesson-title { display: flex; align-items: flex-start; gap: 12px; min-width: 0; overflow-wrap: anywhere; }
.lesson-number { background: var(--brand-soft); color: var(--brand-on-soft); border-radius: 7px; display: grid; place-items: center; width: 33px; height: 33px; font-size: .8rem; font-weight: 700; flex: 0 0 auto; }
.lesson-list .sub { display: block; font-size: .77rem; color: var(--muted); margin-top: 3px; }
.lesson-exam-score { color: var(--link); font-weight: 700; white-space: nowrap; }
.prose { font-size: .98rem; line-height: 1.8; overflow-wrap: anywhere; }
.lesson-notes { white-space: pre-wrap; }
.video-wrap { aspect-ratio: 16/9; width: 100%; overflow: hidden; border-radius: 10px; background: var(--sidebar); margin-bottom: 25px; }
.video-wrap iframe { display: block; border: 0; width: 100%; height: 100%; }
.exam-question { margin-bottom: 24px; }
.exam-question legend { font-size: 1rem; line-height: 1.5; }
.answer-option { display: flex; gap: 12px; align-items: flex-start; padding: 12px 14px; border: 1px solid var(--line); border-radius: 7px; margin: 9px 0; cursor: pointer; }
.answer-option:has(input:checked) { border-color: var(--focus); background: var(--brand-soft); color: var(--brand-on-soft); }
.answer-option:hover { background: var(--page); color: var(--ink); }
.question-editor { background: var(--surface); }
.question-editor .question-head { display: flex; justify-content: space-between; gap: 14px; margin-bottom: 14px; }
.option-edit { display: grid; grid-template-columns: 18px minmax(0, 1fr); gap: 10px; align-items: center; margin-bottom: 10px; }
.score { font-size: 3.2rem; letter-spacing: -.06em; font-weight: 750; line-height: 1; margin: 12px 0 18px; }
.feedback { padding: 18px 0; border-bottom: 1px solid var(--line); }
.feedback:last-child { border-bottom: 0; }
.feedback .correct { color: #23623b; background: #e1f0e4; padding: 2px 5px; border-radius: 4px; }
.feedback .incorrect { color: #9e3a35; background: #fbe7e4; padding: 2px 5px; border-radius: 4px; }
.filter-form { display: flex; flex-wrap: wrap; align-items: flex-end; gap: 14px; margin-bottom: 20px; }
.filter-form .field { flex: 1 1 180px; margin: 0; }
.filter-form .button { margin-bottom: 1px; }
details { border: 1px solid var(--line); border-radius: 9px; padding: 13px 16px; margin-bottom: 15px; }
summary { cursor: pointer; font-weight: 650; font-size: .9rem; }
details[open] summary { margin-bottom: 18px; }
.attempt-list { margin: 0; padding: 0; border: 0; min-width: 105px; }
.attempt-list summary { font-size: .8rem; }
.attempt-list[open] summary { margin-bottom: 8px; }
.attempt-list ul { margin: 0; padding-left: 17px; font-size: .75rem; min-width: 165px; }
.attempt-list li + li { margin-top: 7px; }
.login-page { min-height: 100vh; display: grid; grid-template-columns: minmax(300px, .85fr) 1fr; background: var(--surface); }
.login-aside { background: var(--sidebar); padding: clamp(35px, 7vw, 90px); color: var(--sidebar-ink); display: flex; flex-direction: column; justify-content: space-between; }
.login-aside .brand { margin: 0 0 80px; }
.login-aside h1 { font-size: clamp(2.1rem, 4vw, 3.4rem); letter-spacing: -.045em; max-width: 430px; line-height: 1.13; }
.login-aside p { color: var(--sidebar-muted); max-width: 390px; font-size: 1rem; }
.login-aside .login-foot { color: var(--sidebar-muted); font-size: .75rem; margin-top: 70px; }
.login-main { display: grid; place-items: center; padding: 40px 24px; }
.login-box { width: 100%; max-width: 410px; }
.login-box h2 { font-size: 1.85rem; margin-bottom: 10px; }
.login-box > p { color: var(--muted); margin-bottom: 28px; }
.login-help { color: var(--muted); font-size: .82rem; text-align: center; margin-top: 22px; }
.certificate { max-width: 1050px; background: #fffefa; margin: 20px auto; padding: 48px 55px 36px; border: 1px solid #c6d2b9; outline: 6px double #c6d2b9; outline-offset: -16px; text-align: center; color: #234339; font-family: Georgia, "Times New Roman", serif; overflow-wrap: anywhere; }
.certificate .institute-name { text-transform: uppercase; font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif; letter-spacing: .19em; font-size: .85rem; font-weight: 750; }
.certificate h1 { font: 400 clamp(2.1rem, 5vw, 3.7rem)/1.15 Georgia, serif; margin: 26px 0 22px; }
.certificate .presented { font: .95rem/1.6 -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif; color: #6c7d6c; }
.certificate .student-name { font-size: clamp(1.8rem, 4vw, 2.8rem); line-height: 1.2; padding: 17px 10px; margin: 14px 0 18px; }
.certificate .course-name { font-size: 1.7rem; margin: 15px 0 20px; }
.certificate .signatures { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 70px; margin: 55px 30px 28px; font: .85rem/1.5 -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif; }
.certificate .signature { border-top: 1px solid #a3b59b; padding-top: 10px; }
.certificate .serial { font: .7rem/1.6 -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif; color: #7a8775; margin-top: 28px; }
@media (max-width: 1100px) {
  .course-head.has-books { grid-template-columns: minmax(0, 1fr); }
  .course-head.has-books.has-settings { grid-template-columns: minmax(0, 1fr) auto; }
  .course-head .course-books { grid-column: 1 / -1; grid-row: 2; justify-self: start; }
  .course-head.has-settings .course-settings { grid-column: 2; grid-row: 1; }
}
@media (max-width: 1000px) {
  .app-shell { grid-template-columns: 190px minmax(0, 1fr); }
  .sidebar { padding-left: 15px; padding-right: 15px; }
  .main-content { padding: 28px 23px 40px; }
  .topbar { padding-left: 23px; padding-right: 23px; }
  .grid.three { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .page-head { flex-wrap: wrap; }
}
@media (max-width: 720px) {
  .course-head.has-settings, .course-head.has-books.has-settings { grid-template-columns: minmax(0, 1fr); }
  .course-head .course-books { grid-column: 1; grid-row: auto; }
  .course-head.has-settings .course-settings { grid-column: 1; grid-row: auto; justify-self: start; }
  .book-settings-layout.has-cover { grid-template-columns: minmax(0, 1fr); gap: 18px; }
  .book-current-cover { width: 140px; }
  .app-shell { display: block; }
  .sidebar { min-height: 0; padding: 18px 19px 16px; }
  .sidebar .brand { margin-bottom: 17px; }
  .sidebar .brand-mark { width: 32px; height: 35px; }
  .nav-label { display: none; }
  .nav { display: flex; overflow-x: auto; gap: 5px; }
  .nav a { white-space: nowrap; padding: 8px 11px; font-size: .84rem; }
  .sidebar-footer { margin: 12px 0 0; padding: 0 5px; display: flex; align-items: center; gap: 11px; }
  .sidebar-user { font-size: .8rem; }
  .sidebar-role { font-size: .7rem; }
  .sidebar .logout { margin: 0; padding: 5px 9px; }
  .sidebar-footer .small { display: none; }
  .topbar { min-height: 50px; padding: 11px 20px; }
  .topbar-label { font-size: .77rem; }
  .main-content { padding: 25px 18px 40px; }
  .grid, .grid.three, .form-row, .form-row.three { grid-template-columns: minmax(0, 1fr); }
  .card { padding: 20px 17px; }
  .form-row { gap: 0; }
  .stats { grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 10px; }
  .stat { padding: 16px; }
  .stat strong { font-size: 1.65rem; }
  .card-header { flex-wrap: wrap; }
  .lesson-list li { align-items: flex-start; }
  .login-page { display: block; }
  .login-aside { padding: 25px 27px 30px; }
  .login-aside .brand { margin-bottom: 25px; }
  .login-aside h1 { font-size: 2rem; }
  .login-aside p { font-size: .87rem; }
  .login-aside .login-foot { display: none; }
  .login-main { padding: 35px 24px; }
  .certificate { padding: 35px 25px 30px; }
  .certificate .signatures { gap: 25px; margin-left: 0; margin-right: 0; }
}
@media print {
  @page { size: A4 landscape; margin: 10mm; }
  body {
    --ink: #000000;
    --muted: #444444;
    --page: #ffffff;
    --surface: #ffffff;
    --line: #cccccc;
    --brand: #000000;
    --brand-dark: #000000;
    --brand-soft: #f3f3f3;
    --brand-on-soft: #000000;
    --link: #000000;
    --link-hover: #000000;
    --on-brand: #ffffff;
    --on-brand-hover: #ffffff;
    --accent: #e5e5e5;
    --on-accent: #000000;
    --progress: #444444;
    background: #fff;
    color: #000;
  }
  .sidebar, .topbar, .no-print, .skip-link, .page-head, .breadcrumb, .notice { display: none !important; }
  .app-shell, .main-column { display: block; }
  .main-content { padding: 0; max-width: none; }
  .card { box-shadow: none; }
  .certificate { max-width: none; width: 100%; min-height: 178mm; margin: 0; padding: 22px 40px; box-shadow: none; break-inside: avoid; }
  .certificate h1 { font-size: 30pt; margin: 16px 0; }
  .certificate .presented { font-size: 10pt; margin: 8px 0; }
  .certificate .student-name { font-size: 27pt; padding: 8px; margin: 10px 0; }
  .certificate .course-name { font-size: 19pt; margin: 10px 0; }
  .certificate .signatures { margin-top: 26px; margin-bottom: 18px; }
  .certificate .serial { margin: 14px 0 0; }
  .certificate a { color: inherit; text-decoration: none; }
}

/* Certificate administration and transcript records */
.button:disabled { opacity: .5; cursor: not-allowed; }
.certificate-record-actions { display: flex; flex-direction: column; align-items: flex-start; gap: 8px; min-width: 180px; max-width: 340px; }
.certificate-record-actions > .badge { white-space: normal; }
.certificate-record-actions .button { white-space: normal; text-align: left; }
.certificate-number { font-size: .72rem; overflow-wrap: anywhere; }
.certificate-inline-details { width: 100%; margin: 0; padding: 10px 12px; }
.certificate-inline-details summary { font-size: .78rem; }
.certificate-inline-details .field { margin-bottom: 12px; }
.certificate-inline-details .field > label { font-size: .77rem; }
.certificate-upload input[type=file] { max-width: 100%; font-size: .8rem; }
.certificate-upload .hint { font-size: .75rem; line-height: 1.55; }
.certificate-register td { vertical-align: top; }
.certificate-register .check { padding: 3px 0; }
.certificate-facts { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 20px 28px; margin: 0; }
.certificate-facts > div { min-width: 0; }
.certificate-facts dt, .certificate-print-settings dt { font-size: .76rem; font-weight: 700; color: var(--muted); margin-bottom: 4px; }
.certificate-facts dd, .certificate-print-settings dd { margin: 0; font-size: .95rem; overflow-wrap: anywhere; }
.certificate-facts .sub, .certificate-upload .sub, .certificate-file-detail .sub { display: block; font-size: .8rem; color: var(--muted); margin-top: 4px; }
.certificate-file-detail { overflow-wrap: anywhere; }
.table-scroll-hint { display: none; }
.certificate-print-settings { display: grid; grid-template-columns: 1fr; gap: 12px; margin: 18px 0 22px; }
@media (max-width: 720px) {
  .table-scroll-hint { display: block; }
  .certificate-facts { grid-template-columns: minmax(0, 1fr); gap: 16px; }
  .certificate-record-actions { min-width: 170px; }
}