:root {
  --rbcs-red: #a5121a;
  --rbcs-red-dark: #730b10;
  --rbcs-black: #171717;
  --rbcs-charcoal: #262626;
  --rbcs-bg: #f4f5f7;
  --rbcs-panel: #ffffff;
  --rbcs-border: #dedfe3;
  --rbcs-text: #1f2430;
  --rbcs-muted: #6b7280;
  --rbcs-shadow: 0 8px 26px rgba(0,0,0,.08);
  --radius: 14px;
}

* { box-sizing: border-box; }
html, body { margin: 0; min-height: 100%; font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif; color: var(--rbcs-text); background: var(--rbcs-bg); }
button, input, select, textarea { font: inherit; }
button { cursor: pointer; }

.app-shell { display: grid; grid-template-columns: 260px minmax(0, 1fr); min-height: 100vh; }
.sidebar { position: sticky; top: 0; height: 100vh; display: flex; flex-direction: column; background: linear-gradient(180deg, #151515, #242424); color: #fff; padding: 22px 18px; }
.brand { display: flex; gap: 12px; align-items: center; padding: 4px 6px 24px; border-bottom: 1px solid rgba(255,255,255,.12); }
.brand-mark { width: 44px; height: 44px; border-radius: 50%; display: grid; place-items: center; background: var(--rbcs-red); font-size: 24px; font-weight: 900; box-shadow: inset 0 0 0 2px rgba(255,255,255,.15); }
.brand strong, .brand span { display: block; }
.brand strong { font-size: 14px; letter-spacing: .01em; }
.brand span { font-size: 12px; color: #c8c8c8; margin-top: 2px; }

.nav { display: grid; gap: 5px; padding-top: 20px; }
.nav-item { border: 0; border-radius: 10px; background: transparent; color: #dedede; text-align: left; padding: 11px 12px; font-weight: 650; transition: background .15s ease, color .15s ease, transform .15s ease; }
.nav-item:hover { background: rgba(255,255,255,.08); color: #fff; }
.nav-item.active { background: var(--rbcs-red); color: #fff; box-shadow: 0 5px 15px rgba(165,18,26,.3); }
.sidebar-foot { margin-top: auto; color: #9b9b9b; font-size: 12px; padding: 18px 8px 4px; }

.main { min-width: 0; }
.topbar { min-height: 92px; display: flex; align-items: center; justify-content: space-between; gap: 20px; background: #fff; border-bottom: 1px solid var(--rbcs-border); padding: 18px 28px; position: sticky; top: 0; z-index: 10; }
.topbar h1 { margin: 0; font-size: 26px; }
.eyebrow { margin: 0 0 4px; color: var(--rbcs-red); text-transform: uppercase; font-size: 11px; font-weight: 800; letter-spacing: .14em; }
.topbar-actions { display: flex; align-items: center; gap: 10px; }
.school-year { border: 1px solid var(--rbcs-border); border-radius: 999px; padding: 8px 12px; background: #fafafa; font-weight: 700; font-size: 13px; }
.icon-button, .avatar { width: 40px; height: 40px; border-radius: 50%; display: grid; place-items: center; }
.icon-button { border: 1px solid var(--rbcs-border); background: #fff; }
.avatar { background: var(--rbcs-black); color: #fff; font-weight: 800; }

.content { padding: 28px; }
.hero { display: flex; justify-content: space-between; gap: 20px; align-items: end; margin-bottom: 22px; }
.hero h2 { margin: 0 0 6px; font-size: 24px; }
.hero p { margin: 0; color: var(--rbcs-muted); }
.status-pill { display: inline-flex; align-items: center; gap: 7px; border-radius: 999px; padding: 8px 11px; background: #eef9f0; color: #226334; font-weight: 750; font-size: 12px; }
.status-dot { width: 8px; height: 8px; border-radius: 50%; background: #2f9e44; }

.grid { display: grid; gap: 18px; }
.grid.stats { grid-template-columns: repeat(4, minmax(0, 1fr)); }
.grid.two { grid-template-columns: minmax(0, 2fr) minmax(280px, 1fr); margin-top: 18px; }
.card { background: var(--rbcs-panel); border: 1px solid var(--rbcs-border); border-radius: var(--radius); box-shadow: var(--rbcs-shadow); padding: 20px; }
.stat-label { color: var(--rbcs-muted); font-size: 12px; font-weight: 750; text-transform: uppercase; letter-spacing: .06em; }
.stat-value { font-size: 30px; font-weight: 850; margin-top: 8px; }
.stat-note { color: var(--rbcs-muted); font-size: 12px; margin-top: 4px; }
.card h3 { margin: 0 0 14px; }
.module-list { display: grid; gap: 10px; }
.module-row { display: flex; align-items: center; justify-content: space-between; gap: 14px; padding: 12px 0; border-bottom: 1px solid #eceef1; }
.module-row:last-child { border-bottom: 0; }
.module-name { font-weight: 750; }
.module-note { color: var(--rbcs-muted); font-size: 12px; margin-top: 2px; }
.badge { border-radius: 999px; padding: 5px 9px; background: #f1f2f4; color: #4c5563; font-size: 11px; font-weight: 750; white-space: nowrap; }
.badge.next { background: #fff1f1; color: var(--rbcs-red-dark); }
.placeholder { min-height: 360px; display: grid; place-items: center; text-align: center; }
.placeholder-inner { max-width: 520px; }
.placeholder h2 { margin-bottom: 8px; }
.placeholder p { color: var(--rbcs-muted); line-height: 1.6; }

.class-hero { align-items: center; }
.class-tools { display: flex; gap: 10px; align-items: center; }
.search-input { width: min(320px, 42vw); border: 1px solid var(--rbcs-border); border-radius: 10px; background: #fff; padding: 10px 12px; outline: none; }
.search-input:focus { border-color: var(--rbcs-red); box-shadow: 0 0 0 3px rgba(165,18,26,.10); }
.class-list-card { padding: 0 18px; overflow: hidden; }
.class-list { display: grid; }
.class-row { display: flex; align-items: center; justify-content: space-between; gap: 16px; padding: 17px 4px; border-bottom: 1px solid #eceef1; }
.class-row:last-child { border-bottom: 0; }
.class-row-main { min-width: 0; }
.class-name-button { display: inline; border: 0; padding: 0; background: transparent; color: var(--rbcs-text); font-size: 16px; font-weight: 800; text-align: left; }
.class-name-button:hover { color: var(--rbcs-red); text-decoration: underline; text-underline-offset: 3px; }
.class-row-meta { color: var(--rbcs-muted); font-size: 12px; margin-top: 4px; }
.class-row-actions { display: flex; gap: 8px; flex: 0 0 auto; }
.primary-button, .secondary-button, .text-button { border-radius: 9px; font-weight: 750; padding: 9px 12px; }
.primary-button { border: 1px solid var(--rbcs-red); background: var(--rbcs-red); color: #fff; }
.primary-button:hover { background: var(--rbcs-red-dark); border-color: var(--rbcs-red-dark); }
.secondary-button { border: 1px solid var(--rbcs-border); background: #fff; color: var(--rbcs-text); }
.secondary-button:hover { border-color: #b8bbc2; background: #fafafa; }
.text-button { border: 0; background: transparent; color: var(--rbcs-red-dark); padding-left: 0; }
.text-button:hover { text-decoration: underline; }
.loading-row, .empty-state { color: var(--rbcs-muted); padding: 28px 8px; text-align: center; }
.detail-toolbar { display: flex; align-items: center; justify-content: space-between; gap: 14px; margin-bottom: 18px; }
.class-detail-grid { display: grid; grid-template-columns: minmax(0, 1fr) minmax(320px, .8fr); gap: 18px; }
.detail-title { margin: 2px 0 20px; font-size: 28px; }
.detail-facts { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 12px; }
.detail-facts > div { border: 1px solid #eceef1; border-radius: 10px; padding: 12px; background: #fafafa; }
.detail-facts span, .roster-row span { display: block; color: var(--rbcs-muted); font-size: 11px; font-weight: 700; text-transform: uppercase; letter-spacing: .04em; }
.detail-facts strong { display: block; margin-top: 4px; font-size: 14px; }
.roster-list { display: grid; }
.roster-row { padding: 12px 2px; border-bottom: 1px solid #eceef1; }
.roster-row:last-child { border-bottom: 0; }
.roster-row strong { display: block; margin-bottom: 3px; }

.gradebook-heading { display: flex; align-items: end; justify-content: space-between; gap: 16px; margin-bottom: 16px; }
.gradebook-heading h2 { margin: 2px 0 4px; font-size: 27px; }
.gradebook-heading p:last-child { margin: 0; color: var(--rbcs-muted); }
.save-status { min-height: 20px; color: var(--rbcs-muted); font-size: 12px; font-weight: 750; }
.gradebook-card { padding: 0; overflow: hidden; }
.gradebook-scroll { overflow: auto; max-width: 100%; }
.gradebook-table { border-collapse: separate; border-spacing: 0; min-width: 100%; width: max-content; }
.gradebook-table th, .gradebook-table td { border-right: 1px solid #e8e9ec; border-bottom: 1px solid #e8e9ec; background: #fff; }
.gradebook-table thead th { position: sticky; top: 0; z-index: 3; background: #fafafa; }
.gradebook-table tr:last-child th, .gradebook-table tr:last-child td { border-bottom: 0; }
.student-col { position: sticky; left: 0; z-index: 2; width: 190px; min-width: 190px; padding: 12px 14px; text-align: left; background: #fff !important; }
thead .student-col { z-index: 5; background: #fafafa !important; }
.student-col strong { display: block; font-size: 13px; }
.student-col span { display: block; margin-top: 3px; color: var(--rbcs-muted); font-size: 10px; font-weight: 700; text-transform: uppercase; }
.average-col { width: 92px; min-width: 92px; padding: 10px; text-align: center; background: #fcfcfd !important; }
.assignment-col { width: 128px; min-width: 128px; padding: 9px 8px; vertical-align: top; }
.assignment-head { display: grid; gap: 3px; }
.assignment-head > strong, .assignment-title-button { font-size: 12px; line-height: 1.25; }
.assignment-head span { color: var(--rbcs-muted); font-size: 10px; font-weight: 600; }
.assignment-title-button { border: 0; background: transparent; color: var(--rbcs-text); padding: 0; text-align: left; font-weight: 800; }
.assignment-title-button:hover { color: var(--rbcs-red); text-decoration: underline; }
.mini-flag { display: inline-flex; width: fit-content; padding: 2px 5px; border-radius: 999px; background: #f2f2f4; color: #636873 !important; text-transform: uppercase; letter-spacing: .03em; }
.grade-cell { width: 128px; min-width: 128px; padding: 8px; text-align: center; }
.grade-input { width: 74px; border: 1px solid var(--rbcs-border); border-radius: 7px; padding: 7px 6px; text-align: center; background: #fff; }
.grade-input:focus { outline: 2px solid rgba(165,18,26,.13); border-color: var(--rbcs-red); }
.read-only-grade span { display: inline-block; min-width: 46px; font-weight: 700; }
.assignment-editor { margin-bottom: 18px; }
.editor-header { display: flex; align-items: center; justify-content: space-between; gap: 12px; margin-bottom: 14px; }
.editor-header h3 { margin: 2px 0 0; }
.assignment-form { display: grid; grid-template-columns: repeat(3, minmax(0,1fr)); gap: 12px; align-items: end; }
.assignment-form label { display: grid; gap: 6px; }
.assignment-form label > span { color: var(--rbcs-muted); font-size: 11px; font-weight: 750; text-transform: uppercase; letter-spacing: .04em; }
.assignment-form input[type="text"], .assignment-form input[type="date"], .assignment-form input[type="number"], .assignment-form input:not([type]), .assignment-form select, .assignment-form textarea { width: 100%; border: 1px solid var(--rbcs-border); border-radius: 8px; padding: 9px 10px; background: #fff; }
.assignment-form textarea { resize: vertical; min-height: 96px; }
.wide-field { grid-column: span 2; }
.check-field { display: flex !important; grid-auto-flow: column; justify-content: start; align-items: center; gap: 8px !important; }
.check-field span { text-transform: none !important; letter-spacing: 0 !important; font-size: 12px !important; color: var(--rbcs-text) !important; }
.editor-actions { grid-column: 1 / -1; display: flex; justify-content: flex-end; gap: 8px; padding-top: 4px; }
.assignment-delete-button { margin-right: auto; }
.assignment-files small { color: var(--rbcs-muted); font-size: 11px; }
.assignment-existing-files { grid-column: 1 / -1; display: flex; flex-wrap: wrap; gap: 10px 18px; border: 1px solid var(--rbcs-border); border-radius: 9px; padding: 10px 12px; }
.assignment-existing-files legend { color: var(--rbcs-muted); font-size: 11px; font-weight: 800; text-transform: uppercase; letter-spacing: .04em; }
.assignment-existing-files label { display: flex; grid-auto-flow: column; align-items: center; gap: 7px; font-size: 12px; }
.assignment-detail,.assignment-manager { margin-bottom: 18px; }
.assignment-detail-facts { display: grid; grid-template-columns: repeat(4,minmax(0,1fr)); gap: 10px; }
.assignment-detail-facts>div { border: 1px solid #eceef1; border-radius: 9px; padding: 11px; background: #fafafa; }
.assignment-detail-facts span { display: block; color: var(--rbcs-muted); font-size: 10px; font-weight: 800; text-transform: uppercase; }
.assignment-detail-facts strong { display: block; margin-top: 4px; }
.assignment-detail-flags,.assignment-review-files { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 14px; }
.assignment-description { margin-top: 16px; }
.assignment-description h4,.assignment-review-files h4 { width: 100%; margin: 0 0 2px; }
.assignment-description p,.assignment-review-files p { margin: 6px 0 0; white-space: pre-wrap; color: var(--rbcs-muted); line-height: 1.5; }
.assignment-manager-scroll { overflow: auto; }
.assignment-manager table { width: 100%; border-collapse: collapse; min-width: 780px; }
.assignment-manager th,.assignment-manager td { padding: 10px; border-bottom: 1px solid #e8e9ec; text-align: left; font-size: 12px; }
.assignment-manager th { color: var(--rbcs-muted); text-transform: uppercase; font-size: 10px; letter-spacing: .04em; }
.assignment-manager-actions,.gradebook-toolbar-actions { display: flex; gap: 8px; align-items: center; }

@media (max-width: 1050px) {
  .grid.stats { grid-template-columns: repeat(2, minmax(0,1fr)); }
  .grid.two, .class-detail-grid { grid-template-columns: 1fr; }
  .assignment-form { grid-template-columns: repeat(2, minmax(0,1fr)); }
  .assignment-detail-facts { grid-template-columns: repeat(2,minmax(0,1fr)); }
}

@media (max-width: 760px) {
  .app-shell { grid-template-columns: 1fr; }
  .sidebar { position: static; height: auto; }
  .nav { grid-template-columns: repeat(2, minmax(0,1fr)); }
  .topbar { position: static; padding: 16px 18px; }
  .content { padding: 18px; }
  .grid.stats { grid-template-columns: 1fr; }
  .school-year { display: none; }
  .hero, .class-row, .detail-toolbar, .gradebook-heading { align-items: stretch; flex-direction: column; }
  .search-input { width: 100%; }
  .detail-facts { grid-template-columns: 1fr; }
  .class-row-actions { width: 100%; }
  .secondary-button { width: 100%; }
  .assignment-form { grid-template-columns: 1fr; }
  .wide-field { grid-column: auto; }
  .assignment-detail-facts { grid-template-columns: 1fr 1fr; }
  .gradebook-toolbar-actions { flex-wrap: wrap; }
}

.class-detail-actions { display: flex; gap: 8px; align-items: center; }
.wide-detail { grid-column: 1 / -1; }
.class-delete-zone { display: flex; align-items: center; gap: 12px; margin-top: 18px; padding: 14px 16px; border: 1px solid #f1c0c0; border-radius: 10px; background: #fff8f8; }
.class-delete-zone span { color: #8f3030; font-size: 12px; }
.class-modal-backdrop { position: fixed; inset: 0; z-index: 90; display: grid; place-items: center; padding: 20px; background: rgba(0,0,0,.5); }
.class-admin-modal { width: min(920px, 96vw); max-height: calc(100vh - 40px); overflow: auto; }
.class-admin-modal .editor-header p { margin: 4px 0 0; color: var(--rbcs-muted); }
.class-admin-form { display: grid; grid-template-columns: repeat(2,minmax(0,1fr)); gap: 14px; }
.class-admin-form label,.course-editor label { display: grid; gap: 6px; }
.class-admin-form label>span,.course-editor label>span,.class-days legend { color: var(--rbcs-muted); font-size: 11px; font-weight: 800; text-transform: uppercase; letter-spacing: .04em; }
.class-admin-form input,.class-admin-form select,.course-editor input,.class-roster-tools input { width: 100%; border: 1px solid var(--rbcs-border); border-radius: 8px; padding: 10px 12px; background: #fff; font: inherit; }
.class-days { grid-column: 1/-1; border: 1px solid var(--rbcs-border); border-radius: 9px; padding: 10px 12px; }
.class-days>div { display: grid; grid-template-columns: repeat(7,minmax(0,1fr)); gap: 8px; margin-top: 7px; }
.class-days label { display: flex; align-items: center; justify-content: center; gap: 5px; padding: 8px 5px; border: 1px solid #e6e8ec; border-radius: 7px; background: #fafafa; }
.class-check { grid-column: 1/-1; display: flex!important; grid-template-columns: auto 1fr!important; align-items: center; }
.class-check input { width: auto; }
.class-check span { text-transform: none!important; letter-spacing: 0!important; font-size: 13px!important; color: var(--rbcs-text)!important; }
.class-roster-tools { display: grid; grid-template-columns: 1fr auto auto; gap: 8px; margin-bottom: 14px; }
.class-student-picker { display: grid; grid-template-columns: repeat(2,minmax(0,1fr)); gap: 7px 12px; max-height: min(55vh,560px); overflow: auto; padding: 4px; }
.class-student-picker>label { display: flex; align-items: center; gap: 10px; padding: 10px; border: 1px solid #e5e7eb; border-radius: 8px; }
.class-student-picker>label[hidden] { display: none; }
.class-student-picker>label:has(input:checked) { border-color: var(--rbcs-red); background: #fff8f8; }
.class-student-picker strong,.class-student-picker small { display: block; }
.class-student-picker small { margin-top: 2px; color: var(--rbcs-muted); }
.class-roster-modal .editor-actions { margin-top: 14px; }
.course-admin-grid { display: grid; grid-template-columns: minmax(0,1.25fr) minmax(280px,.75fr); gap: 22px; }
.course-list { border: 1px solid #e5e7eb; border-radius: 9px; max-height: 60vh; overflow: auto; }
.course-row { display: flex; align-items: center; justify-content: space-between; gap: 12px; padding: 12px; border-bottom: 1px solid #eceef1; }
.course-row:last-child { border-bottom: 0; }
.course-row strong,.course-row span { display: block; }
.course-row span { margin-top: 3px; color: var(--rbcs-muted); font-size: 12px; }
.course-row>div:last-child { display: flex; align-items: center; gap: 8px; }
.course-delete { color: #b42318; padding: 8px; }
.course-editor { align-self: start; display: grid; gap: 12px; padding: 16px; border: 1px solid #e5e7eb; border-radius: 9px; background: #fafbfc; }
.course-editor h4 { margin: 0 0 2px; }
.danger-button { border: 1px solid #d92d20; background: #fff; color: #b42318; border-radius: 9px; padding: 9px 12px; font-weight: 750; }
.danger-button:hover { background: #fff1f0; }

@media (max-width: 850px) {
  .class-tools,.class-detail-actions { flex-wrap: wrap; }
  .class-admin-form,.course-admin-grid,.class-student-picker { grid-template-columns: 1fr; }
  .class-days>div { grid-template-columns: repeat(4,minmax(0,1fr)); }
}

@media (max-width: 600px) {
  .class-detail-actions,.class-tools,.class-delete-zone { align-items: stretch; flex-direction: column; }
  .class-roster-tools { grid-template-columns: 1fr; }
  .class-days>div { grid-template-columns: repeat(2,minmax(0,1fr)); }
}

.calendar-actions{display:flex;align-items:flex-start;justify-content:flex-end;gap:7px;flex-wrap:wrap}
.calendar-filter{position:relative}.calendar-filter>summary{list-style:none;cursor:pointer}.calendar-filter>summary::-webkit-details-marker{display:none}
.calendar-filter-menu{position:absolute;right:0;top:calc(100% + 7px);z-index:20;width:min(330px,85vw);padding:12px;background:#fff;border:1px solid #d9dde3;border-radius:10px;box-shadow:0 12px 30px rgba(15,23,42,.16);display:grid;gap:9px}
.calendar-filter-menu label{display:flex;align-items:flex-start;gap:8px;font-size:.86rem}.calendar-filter-menu input{margin-top:2px}
.calendar-filter-menu fieldset{margin:3px 0 0;padding:9px;border:1px solid #e2e5e9;border-radius:8px;display:grid;gap:7px}
.calendar-filter-menu legend{padding:0 5px;font-size:.76rem;font-weight:800;color:#64748b}
.dashboard-calendar-card{margin-top:22px;padding:20px}.dashboard-calendar-title{display:flex;justify-content:space-between;align-items:flex-start;gap:16px;border-bottom:1px solid #e5e7eb;padding-bottom:12px;margin-bottom:12px}
.dashboard-calendar-title h3,.dashboard-calendar-title p{margin:0}.dashboard-calendar-title p{color:#64748b;margin-top:3px}
.dashboard-calendar-news{display:grid;grid-template-columns:repeat(auto-fit,minmax(220px,1fr));gap:8px;margin-bottom:12px}.dashboard-calendar-news>div{border:1px solid #e2e5e9;border-radius:8px;padding:9px}.dashboard-calendar-news strong,.dashboard-calendar-news span{display:block}.dashboard-calendar-news span{font-size:.78rem;color:#64748b}
.dashboard-calendar-head,.dashboard-calendar-grid{display:grid;grid-template-columns:repeat(7,minmax(0,1fr));gap:6px}.dashboard-calendar-head{text-align:center;font-size:.8rem;margin-bottom:6px}
.dashboard-calendar-day{min-height:82px;border:1px solid #e1e4e8;border-radius:8px;padding:7px;font-size:.78rem;overflow:hidden}.dashboard-calendar-day.muted{opacity:.42}
.dashboard-calendar-day>span,.calendar-day>span{display:block;border-radius:5px;padding:4px;margin-top:4px}.assignment-event{background:#e8eef8!important}.school-event{background:#f3e3e6!important}
.dashboard-calendar-day small,.calendar-day small{display:block;font-size:.68rem;color:#526070;margin-top:2px}
@media(max-width:680px){.dashboard-calendar-title{display:block}.dashboard-calendar-title .calendar-actions{margin-top:10px;justify-content:flex-start}.dashboard-calendar-day{min-height:52px;padding:4px}.dashboard-calendar-day>span{font-size:.68rem}.calendar-filter-menu{left:0;right:auto}}

.calendar-event-chip{position:relative;display:block;width:100%;border:0;text-align:left;font:inherit;color:inherit;cursor:pointer}
.calendar-event-chip>span:first-child,.calendar-event-chip>small{display:block;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.calendar-event-popover{position:absolute!important;z-index:40;left:0;top:calc(100% + 5px);width:min(310px,calc(100vw - 55px));padding:11px!important;margin:0!important;border:1px solid #d8dde4;border-radius:9px!important;background:#fff!important;box-shadow:0 12px 30px rgba(25,31,42,.22);color:#252a34;visibility:hidden;opacity:0;transform:translateY(-4px);transition:opacity .12s ease,transform .12s ease;pointer-events:none}
.calendar-event-chip:hover,.calendar-event-chip:focus{z-index:35;outline:2px solid rgba(157,29,37,.22)}
.calendar-event-chip:hover .calendar-event-popover,.calendar-event-chip:focus .calendar-event-popover{visibility:visible;opacity:1;transform:translateY(0)}
.calendar-event-popover strong,.calendar-event-popover small{display:block;white-space:normal}.calendar-event-popover small{margin-top:2px;color:#667085;font-size:.7rem}.calendar-event-popover p{margin:6px 0 0!important;color:#252a34!important;font-size:.78rem!important;line-height:1.4;white-space:pre-wrap}
.calendar-day:nth-child(7n) .calendar-event-popover,.calendar-day:nth-child(7n-1) .calendar-event-popover,.dashboard-calendar-day:nth-child(7n) .calendar-event-popover,.dashboard-calendar-day:nth-child(7n-1) .calendar-event-popover{left:auto;right:0}

.calendar-day,.dashboard-calendar-day{position:relative;overflow:visible}


/* Unified portal header */
.app-shell{grid-template-rows:92px minmax(0,1fr)}
.topbar{grid-column:1/-1;grid-row:1;display:grid;grid-template-columns:260px minmax(320px,1fr) auto;width:100%;min-height:92px;padding:0 22px 0 0}
.header-brand{display:flex;align-items:center;justify-content:center;height:100%;padding:8px 18px;background:linear-gradient(180deg,#111,#1d1d1d)}
.header-brand img{display:block;width:218px;height:76px;object-fit:contain}
.header-site-info{min-width:0;padding-left:28px}
.header-site-info strong,.header-site-info span{display:block}
.header-site-info strong{font-size:24px;line-height:1.08;letter-spacing:.01em;color:var(--rbcs-black)}
.header-site-info span{margin-top:4px;font-size:14px;line-height:1.1;letter-spacing:.055em;color:var(--rbcs-red);text-transform:uppercase}
.sidebar{grid-column:1;grid-row:2;top:92px;height:calc(100vh - 92px);padding-top:8px}
.sidebar>.nav{padding-top:0}
.main{grid-column:2;grid-row:2}
.signed-in-summary{display:none!important}
.role-switcher{display:block}
.role-switcher-select{max-width:250px;border:1px solid var(--rbcs-border);border-radius:10px;background:#fff;padding:9px 34px 9px 12px;font-weight:700;color:var(--rbcs-text)}
.visually-hidden{position:absolute!important;width:1px!important;height:1px!important;padding:0!important;margin:-1px!important;overflow:hidden!important;clip:rect(0,0,0,0)!important;white-space:nowrap!important;border:0!important}

@media(max-width:760px){
  .app-shell{grid-template-rows:auto auto minmax(0,1fr)}
  .topbar{grid-column:1;grid-row:1;grid-template-columns:auto minmax(0,1fr);gap:12px;padding:0 16px 12px 0}
  .header-brand{padding:10px 12px}
  .header-brand img{width:120px;height:48px}
  .header-site-info{padding-left:0}
  .header-site-info strong{font-size:15px}
  .header-site-info span{font-size:9px;letter-spacing:.035em}
  .topbar-actions{grid-column:1/-1;justify-content:flex-end;flex-wrap:wrap;margin-left:16px;padding-top:10px;border-top:1px solid var(--rbcs-border)}
  .role-switcher-select{max-width:min(260px,65vw)}
  .sidebar{grid-column:1;grid-row:2;top:0;height:auto}
  .main{grid-column:1;grid-row:3}
}


.admin-operations-grid{display:grid;grid-template-columns:minmax(280px,.72fr) minmax(560px,1.7fr);gap:18px;margin-top:22px;align-items:start}
.admin-operations-grid .dashboard-calendar-card{margin-top:0}
.admin-dashboard-news{padding:20px}
.admin-news-list{display:grid;gap:10px}
.admin-news-list article{border:1px solid #e1e4e8;border-radius:9px;padding:11px;background:#fafafa}
.admin-news-list strong,.admin-news-list span{display:block}
.admin-news-list span{margin-top:3px;color:var(--rbcs-muted);font-size:.78rem}
.admin-news-list p{margin:8px 0 0;color:#3f4856;font-size:.88rem;line-height:1.45;white-space:pre-wrap}
.teacher-dashboard-news{margin:0 0 16px;padding:14px;border:1px solid #e1e4e8;border-radius:10px;background:#fff}
.teacher-dashboard-news-heading{margin-bottom:10px}
.teacher-dashboard-news-heading h4{margin:0;font-size:1rem}
.teacher-dashboard-news-heading p{margin:3px 0 0;color:var(--rbcs-muted);font-size:.82rem}
@media(max-width:1180px){.admin-operations-grid{grid-template-columns:1fr}}


/* Class assignment calendar */
.gradebook-calendar-card{margin-top:20px;padding:22px;overflow:visible}
.gradebook-calendar-heading{display:flex;align-items:center;justify-content:space-between;gap:16px;margin-bottom:16px}
.gradebook-calendar-heading h3{margin:2px 0 3px;font-size:22px}
.gradebook-calendar-heading p:last-child{margin:0;color:var(--rbcs-muted)}
.gradebook-calendar-controls{display:flex;gap:8px}
.gradebook-calendar-weekdays,.gradebook-calendar-grid{display:grid;grid-template-columns:repeat(7,minmax(0,1fr));gap:6px}
.gradebook-calendar-weekdays{padding:0 2px 7px;text-align:center;font-size:12px;color:var(--rbcs-muted)}
.gradebook-calendar-day{position:relative;min-width:0;min-height:105px;padding:8px;border:1px solid #dfe2e7;border-radius:9px;background:#fff;overflow:visible}
.gradebook-calendar-day.outside-month{background:#fafafa;color:#9ba0a8}
.gradebook-calendar-date{display:block;margin-bottom:6px;font-size:12px;font-weight:800}
.gradebook-calendar-events{display:grid;gap:5px}
.gradebook-calendar-event{position:relative;width:100%;min-width:0;padding:6px 7px;border:1px solid var(--event-border);border-left:4px solid var(--event-border);border-radius:5px;background:var(--event-bg);color:var(--event-text);font:inherit;font-size:12px;font-weight:700;text-align:left;cursor:pointer}
.gradebook-calendar-event>span:first-child{display:block;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}
.gradebook-calendar-event:hover,.gradebook-calendar-event:focus-visible{z-index:20;filter:brightness(.98)}
.gradebook-calendar-popover{display:none;position:absolute;z-index:30;left:0;top:calc(100% + 5px);width:min(290px,70vw);padding:10px;border:1px solid var(--event-border);border-radius:8px;background:#fff;color:#15171a;box-shadow:0 10px 28px rgba(10,20,35,.2);font-weight:400;white-space:normal}
.gradebook-calendar-popover strong,.gradebook-calendar-popover small{display:block}
.gradebook-calendar-popover small{margin-top:4px;color:var(--rbcs-muted);line-height:1.35}
.gradebook-calendar-event:hover .gradebook-calendar-popover,.gradebook-calendar-event:focus-visible .gradebook-calendar-popover{display:block}
.gradebook-calendar-day:nth-child(7n+6) .gradebook-calendar-popover,.gradebook-calendar-day:nth-child(7n) .gradebook-calendar-popover{left:auto;right:0}
.gradebook-calendar-legend{display:flex;flex-wrap:wrap;gap:8px 16px;margin-top:14px;color:var(--rbcs-muted);font-size:12px}
.gradebook-calendar-legend span{display:inline-flex;align-items:center;gap:6px}
.gradebook-calendar-legend i{width:14px;height:14px;border:2px solid var(--event-border);border-radius:3px;background:var(--event-bg)}
@media(max-width:760px){
  .gradebook-calendar-card{padding:14px;overflow-x:auto}
  .gradebook-calendar-heading{align-items:flex-start;flex-direction:column}
  .gradebook-calendar-weekdays,.gradebook-calendar-grid{min-width:700px}
}


/* Score details and retained history */
.grade-cell-editor{display:flex;align-items:center;justify-content:center;gap:4px}
.grade-cell-editor .grade-input{min-width:0}
.score-history-button{flex:0 0 auto;border:0;background:transparent;padding:6px 2px;color:#30343a;font-weight:900;letter-spacing:-1px;cursor:pointer}
.score-history-button:hover,.score-history-button:focus-visible{color:var(--rbcs-red)}
.score-detail-backdrop{position:fixed;z-index:1000;inset:0;display:grid;place-items:center;padding:20px;background:rgba(13,17,23,.64)}
.score-detail-modal{width:min(720px,calc(100vw - 32px));max-height:calc(100vh - 40px);padding:0;overflow:auto}
.score-detail-modal .editor-header{position:sticky;z-index:2;top:0;margin:0;padding:20px 22px;border-bottom:1px solid #e2e4e8;background:#fff}
.score-detail-modal .editor-header h3{margin:0 0 3px;font-size:24px}
.score-detail-modal .editor-header p{margin:0;color:var(--rbcs-muted)}
#scoreDetailForm{padding:20px 22px}
.score-detail-fields{display:grid;grid-template-columns:1fr 1fr;gap:14px}
.score-detail-fields label,.score-note-field{display:grid;gap:6px;font-weight:700}
.score-detail-fields input,.score-note-field textarea{width:100%;padding:10px;border:1px solid #cfd3d9;border-radius:6px;font:inherit}
#scoreDetailForm>.check-field{margin:17px 0}
.score-recorded-summary{margin-top:12px;padding:12px 14px;border:1px solid #efce70;border-radius:7px;background:#fff4ce;display:flex;align-items:center;gap:12px;flex-wrap:wrap}
.score-recorded-summary .score-review-link{margin-left:auto}
.score-history-section{margin-top:18px}
.score-history-section h3{margin:0;font-size:21px}
.score-history-section>p{margin:2px 0 10px;color:var(--rbcs-muted)}
.score-history-list{display:grid;gap:8px}
.score-history-entry{padding:10px;border:1px solid #dfe2e6;border-radius:7px;background:#fbfbfc}
.score-history-entry strong,.score-history-entry small{display:block}
.score-history-entry small{margin-top:3px;color:var(--rbcs-muted)}
.score-history-entry p{margin:6px 0 0}
.score-detail-modal .editor-actions{position:sticky;bottom:0;margin:20px -22px -20px;padding:16px 22px;border-top:1px solid #e2e4e8;background:#fff}
@media(max-width:600px){.score-detail-fields{grid-template-columns:1fr}.score-detail-backdrop{padding:8px}.score-detail-modal{width:calc(100vw - 16px);max-height:calc(100vh - 16px)}}


/* Assignment modal and multi-teacher class editor */
.assignment-editor-backdrop{position:fixed;z-index:950;inset:0;display:grid;place-items:center;padding:20px;background:rgba(13,17,23,.64)}
.assignment-editor-backdrop .assignment-editor{width:min(820px,calc(100vw - 32px));max-height:calc(100vh - 40px);margin:0;padding:0;overflow:auto}
.assignment-editor-backdrop .assignment-editor>.editor-header{position:sticky;z-index:2;top:0;margin:0;padding:20px 22px;border-bottom:1px solid #e2e4e8;background:#fff}
.assignment-editor-backdrop .assignment-form{padding:20px 22px}
.assignment-editor-backdrop .assignment-form>.editor-actions{position:sticky;bottom:0;margin:20px -22px -20px;padding:16px 22px;border-top:1px solid #e2e4e8;background:#fff}
.assignment-head{justify-items:center;text-align:center}
.assignment-head .assignment-title-button{max-width:145px;font-size:15px;line-height:1.25;text-align:center}
.assignment-head span{text-align:center}
.class-co-teachers{grid-column:1/-1;margin:0;border:1px solid var(--rbcs-border);border-radius:9px;padding:12px}
.class-co-teachers legend{color:var(--rbcs-muted);font-size:11px;font-weight:800;text-transform:uppercase;letter-spacing:.04em}
.class-co-teachers>p{margin:0 0 10px;color:var(--rbcs-muted);font-size:12px}
.class-co-teachers>div{display:grid;grid-template-columns:repeat(3,minmax(0,1fr));gap:8px}
.class-co-teachers label{display:flex;align-items:center;gap:8px;padding:8px 10px;border:1px solid #e2e5e9;border-radius:7px;background:#fafafa}
.class-co-teachers input{width:auto}
.class-co-teachers label>span{color:var(--rbcs-text);font-size:13px;text-transform:none;letter-spacing:0}
@media(max-width:760px){.assignment-editor-backdrop{padding:8px}.assignment-editor-backdrop .assignment-editor{width:calc(100vw - 16px);max-height:calc(100vh - 16px)}.class-co-teachers>div{grid-template-columns:1fr}}


/* Gradebook student-name emphasis */
.gradebook-table tbody .student-col strong{font-size:17px;line-height:1.25;color:var(--rbcs-red);font-weight:800}
.gradebook-table tbody .student-col span{font-size:10px;color:var(--rbcs-muted)}


/* Gradebook class switcher */
.gradebook-class-switcher{display:grid;gap:4px;width:min(380px,65vw)}
.gradebook-class-switcher label{color:var(--rbcs-red);font-size:11px;font-weight:900;letter-spacing:.08em;text-transform:uppercase}
.gradebook-class-switcher p{margin:0;color:var(--rbcs-muted)}
.gradebook-class-select{width:100%;padding:6px 34px 6px 10px;border:1px solid #d9dde3;border-radius:8px;background:#fff;color:var(--rbcs-text);font:inherit;font-size:23px;font-weight:800;line-height:1.2;cursor:pointer}
.gradebook-class-select:hover,.gradebook-class-select:focus{border-color:var(--rbcs-red);outline:none;box-shadow:0 0 0 3px rgba(178,15,35,.1)}
@media(max-width:600px){.gradebook-class-switcher{width:100%}.gradebook-class-select{font-size:19px}}

/* Subtle score-history controls */
.score-history-button{padding:5px 1px;color:#9aa0a8;font-size:9px;font-weight:700;letter-spacing:-1.5px;opacity:.8}
.score-history-button:hover,.score-history-button:focus-visible{color:#6f7680;opacity:1}
.score-history-delete{margin-top:8px;padding:5px 8px;border:1px solid #e1a6a9;border-radius:5px;background:#fff;color:#a20d21;font:inherit;font-size:11px;cursor:pointer}
.score-history-delete:hover,.score-history-delete:focus-visible{background:#fff3f3;border-color:#bd1c2d}


.score-history-button.has-history{color:var(--rbcs-red);opacity:1}
.score-history-button.has-history:hover,.score-history-button.has-history:focus-visible{color:#870a1a}


/* Teacher dashboard alerts and complete news messages */
.stat-value-alert{color:var(--rbcs-red,#b51224)}
.teacher-dashboard-news .teacher-news-message{display:block;margin:8px 0 0;color:#3f4856;font-size:.9rem;line-height:1.5;white-space:pre-wrap;overflow:visible;max-height:none}


/* Teacher dashboard: news beside calendar */
.teacher-dashboard-operations{display:grid;grid-template-columns:minmax(280px,.72fr) minmax(560px,1.7fr);gap:18px;margin-top:22px;align-items:start}
.teacher-dashboard-operations .dashboard-calendar-card{margin-top:0}
.teacher-dashboard-operations .teacher-dashboard-news{margin:0;padding:20px;min-width:0}
.teacher-dashboard-operations .teacher-dashboard-news-heading{padding-bottom:12px;margin-bottom:12px;border-bottom:1px solid #e5e7eb}
.teacher-dashboard-operations .teacher-dashboard-news-heading h3{margin:0}
.teacher-dashboard-operations .teacher-dashboard-news-heading p{margin:3px 0 0}
@media(max-width:1180px){.teacher-dashboard-operations{grid-template-columns:1fr}}


/* Teacher dashboard news and upcoming events */
.grid.two > .teacher-dashboard-news{margin:0;padding:20px;min-width:0}
.teacher-upcoming-events{margin:0;padding:20px;min-width:0}
.teacher-upcoming-heading{padding-bottom:12px;margin-bottom:4px;border-bottom:1px solid #e5e7eb}
.teacher-upcoming-heading h3{margin:0}
.teacher-upcoming-heading p{margin:3px 0 0;color:var(--rbcs-muted);font-size:.82rem}
.teacher-upcoming-list{display:grid}
.teacher-upcoming-list article{display:grid;grid-template-columns:76px minmax(0,1fr);gap:10px;padding:12px 0;border-bottom:1px solid #e8eaed}
.teacher-upcoming-list article:last-child{border-bottom:0}
.teacher-upcoming-list time{color:var(--rbcs-red,#b51224);font-size:.82rem;font-weight:800}
.teacher-upcoming-list strong,.teacher-upcoming-list span{display:block}
.teacher-upcoming-list strong{font-size:.9rem}
.teacher-upcoming-list span{margin-top:3px;color:var(--rbcs-muted);font-size:.78rem}


/* Clickable teacher dashboard summary cards */
.dashboard-stat-link{display:block;width:100%;min-width:0;text-align:left;font:inherit;color:inherit;cursor:pointer}
.dashboard-stat-link:hover{border-color:var(--rbcs-red,#b51224);box-shadow:0 8px 22px rgba(181,18,36,.12);transform:translateY(-1px)}
.dashboard-stat-link.dashboard-stat-alert{border-color:var(--rbcs-red,#b51224);background:#fff4f4;box-shadow:0 8px 22px rgba(181,18,36,.12)}
.dashboard-stat-link.dashboard-stat-alert:hover{background:#ffeded}
.dashboard-stat-link:focus-visible{outline:3px solid rgba(181,18,36,.25);outline-offset:2px;border-color:var(--rbcs-red,#b51224)}
.dashboard-stat-link .stat-label::after{content:' →';color:var(--rbcs-red,#b51224)}


/* Teacher dashboard class-to-gradebook links */
.dashboard-class-name-link{display:inline;padding:0;border:0;background:transparent;font:inherit;font-weight:inherit;color:inherit;text-align:left;cursor:pointer}
.dashboard-class-name-link:hover{color:var(--rbcs-red,#b51224);text-decoration:underline}
.dashboard-class-name-link:focus-visible{color:var(--rbcs-red,#b51224);outline:2px solid var(--rbcs-red,#b51224);outline-offset:3px;border-radius:2px}

/* Student dashboard card refinements */
.student-dashboard-overview .student-self-card{background:#fff}
.stat-value.student-stat-text{font-size:25px;line-height:1.15}


.dashboard-birthdays {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 12px;
  margin: 16px 0 18px;
}

.dashboard-birthdays section {
  min-width: 0;
  border: 1px solid #f0d9da;
  border-radius: 11px;
  padding: 13px;
  background: #fff8f8;
}

.dashboard-birthdays h4 {
  margin: 0 0 9px;
  color: var(--rbcs-red-dark);
  font-size: 13px;
}

.dashboard-birthday-list {
  display: grid;
  gap: 7px;
}

.dashboard-birthday-list > p {
  margin: 0;
  color: var(--rbcs-muted);
  font-size: 12px;
  line-height: 1.4;
}

.dashboard-birthday-row {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 10px;
  padding-top: 7px;
  border-top: 1px solid rgba(165, 18, 26, .12);
}

.dashboard-birthday-row:first-child {
  padding-top: 0;
  border-top: 0;
}

.dashboard-birthday-row strong {
  min-width: 0;
  font-size: 13px;
}

.dashboard-birthday-row span {
  flex: 0 0 auto;
  color: var(--rbcs-muted);
  font-size: 11px;
  font-weight: 700;
}

@media (max-width: 760px) {
  .dashboard-birthdays {
    grid-template-columns: 1fr;
  }
}


/* Teacher gradebook lesson plans */
.lesson-plan-manager{max-width:920px;max-height:min(88vh,820px);overflow:auto}
.lesson-plan-form{display:grid;grid-template-columns:minmax(220px,1fr) minmax(260px,1.4fr);gap:16px;padding:18px 0 22px;border-bottom:1px solid var(--border)}
.lesson-plan-form label{display:flex;flex-direction:column;gap:7px}
.lesson-plan-form label>span{font-weight:800;color:var(--muted);font-size:.78rem;text-transform:uppercase;letter-spacing:.04em}
.lesson-plan-form input,.lesson-plan-form textarea{width:100%}
.lesson-plan-form .wide-field,.lesson-plan-form .editor-actions{grid-column:1/-1}
.lesson-plan-form .editor-actions{padding:0;border:0}
.lesson-plan-list{display:grid;gap:10px;padding-top:18px}
.lesson-plan-row{display:flex;align-items:center;justify-content:space-between;gap:18px;padding:14px 16px;border:1px solid var(--border);border-radius:12px;background:#fff}
.lesson-plan-row>div:first-child{display:grid;gap:4px;min-width:0}
.lesson-plan-row strong{font-size:1rem}
.lesson-plan-row span{color:var(--muted);font-size:.88rem;overflow-wrap:anywhere}
.lesson-plan-actions{display:flex;align-items:center;justify-content:flex-end;gap:8px;flex-wrap:wrap}
.lesson-plan-copied-file{display:flex;align-items:center;justify-content:space-between;gap:12px;padding:11px 13px;border:1px solid #b8d5bd;border-radius:10px;background:#eff8f0;color:#245b2d}
@media(max-width:760px){.lesson-plan-form{grid-template-columns:1fr}.lesson-plan-row{align-items:flex-start;flex-direction:column}.lesson-plan-actions{justify-content:flex-start}}

.gradebook-reference-pdfs{display:flex;align-items:center;justify-content:space-between;gap:18px;margin-bottom:14px;padding:14px 18px}
.gradebook-reference-pdfs>div{display:grid;gap:6px;min-width:0}
.reference-pdf-links{display:flex;align-items:center;gap:9px;flex-wrap:wrap}
.reference-pdf-links>span{color:var(--muted);font-size:.9rem}
.reference-pdf-link{appearance:none;border:1px solid #d8dde5;border-radius:9px;background:#fff;color:#a20d21;font:inherit;font-weight:750;padding:8px 11px;cursor:pointer;text-align:left}
.reference-pdf-link:hover,.reference-pdf-link:focus-visible{border-color:#a20d21;background:#fff5f6;outline:none}
@media(max-width:760px){.gradebook-reference-pdfs{align-items:flex-start;flex-direction:column}}

.reference-pdf-backdrop{position:fixed;inset:0;z-index:1200;display:grid;place-items:center;padding:22px;background:rgba(15,20,28,.72)}
.reference-pdf-preview{width:min(1120px,96vw);height:min(900px,92vh);display:grid;grid-template-rows:auto minmax(0,1fr);overflow:hidden;border-radius:16px;background:#fff;box-shadow:0 28px 80px rgba(0,0,0,.36)}
.reference-pdf-preview-head{display:flex;align-items:center;justify-content:space-between;gap:18px;padding:14px 18px;border-bottom:1px solid var(--border)}
.reference-pdf-preview-head>div:last-child{display:flex;align-items:center;gap:9px}
.reference-pdf-preview-head h3{margin:2px 0 0}
.reference-pdf-preview iframe{display:block;width:100%;height:100%;border:0;background:#eef0f3}
@media(max-width:760px){.reference-pdf-backdrop{padding:8px}.reference-pdf-preview{width:100%;height:96vh;border-radius:10px}.reference-pdf-preview-head{align-items:flex-start}.reference-pdf-preview-head h3{font-size:1rem}}