:root {
  color-scheme: light;
  --canvas: #fff6f5;
  --surface: #ffffff;
  --surface-soft: #fceeee;
  --surface-raised: #ffffff;
  --text: #3c2a2c;
  --text-2: #8d6b70;
  --text-3: #bd9ba0;
  --border: #f4dedd;
  --border-strong: #ecc9c6;
  --primary: #e5484d;
  --primary-strong: #c93338;
  --primary-soft: #fde7e8;
  --green: #3fa37c;
  --green-soft: #e6f4ee;
  --orange: #e8913d;
  --orange-soft: #fdf0e2;
  --red: #d94d43;
  --red-soft: #fcebea;
  --purple: #7965c1;
  --purple-soft: #f0ecfb;
  --shadow: 0 1px 2px rgba(197, 48, 49, .05), 0 8px 20px rgba(197, 48, 49, .07);
  --radius: 14px;
  --sidebar: 224px;
}

* { box-sizing: border-box; }
html, body { margin: 0; min-height: 100%; }
body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Arial, sans-serif;
  color: var(--text);
  background: var(--canvas);
  font-size: 15px;
  line-height: 1.5;
}
button, input, textarea, select { font: inherit; }
button { color: inherit; }
button, [role="button"] { -webkit-tap-highlight-color: transparent; }
button:focus-visible, input:focus-visible, textarea:focus-visible, select:focus-visible, [tabindex]:focus-visible {
  outline: 3px solid rgba(39, 120, 212, .22);
  outline-offset: 2px;
}
::selection { background: #d9eaf9; }

.app-shell { min-height: 100vh; }
.topbar {
  position: sticky;
  top: 0;
  z-index: 40;
  height: 72px;
  padding: 0 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  background: rgba(255, 255, 255, .94);
  border-bottom: 1px solid var(--border);
  backdrop-filter: blur(12px);
}
.brand-block { display: flex; align-items: center; gap: 12px; min-width: 0; }
.brand-mark {
  width: 40px;
  height: 40px;
  display: grid;
  place-items: center;
  flex: 0 0 auto;
  border-radius: 10px;
  background: var(--primary);
  color: white;
  font-weight: 850;
  letter-spacing: -.6px;
  box-shadow: 0 5px 12px rgba(39, 120, 212, .18);
}
.brand-name { font-size: 16px; line-height: 1.25; font-weight: 780; letter-spacing: -.1px; }
.brand-subtitle { max-width: 430px; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; font-size: 12.5px; color: var(--text-2); }
.topbar-actions { display: flex; align-items: center; gap: 8px; }
.save-indicator {
  height: 34px;
  display: inline-flex;
  align-items: center;
  gap: 7px;
  padding: 0 10px;
  color: var(--text-2);
  font-size: 12.5px;
  font-weight: 650;
}
.save-dot, .pulse-dot { width: 8px; height: 8px; border-radius: 50%; background: var(--green); }
.save-indicator.saving .save-dot { background: var(--orange); animation: pulse 1s infinite; }
.save-indicator.error .save-dot { background: var(--red); }

.workspace { display: grid; grid-template-columns: var(--sidebar) minmax(0, 1fr); min-height: calc(100vh - 72px); }
.sidebar {
  position: sticky;
  top: 72px;
  height: calc(100vh - 72px);
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  padding: 18px 12px;
  background: var(--surface);
  border-right: 1px solid var(--border);
  overflow-y: auto;
}
.sidebar nav { display: grid; gap: 4px; }
.nav-item {
  width: 100%;
  min-height: 44px;
  border: 0;
  border-radius: 8px;
  padding: 0 10px;
  display: grid;
  grid-template-columns: 24px minmax(0, 1fr) auto;
  align-items: center;
  gap: 8px;
  text-align: left;
  background: transparent;
  color: var(--text-2);
  cursor: pointer;
  transition: background .16s ease, color .16s ease, transform .08s ease;
}
.nav-item:hover { background: var(--surface-soft); color: var(--text); }
.nav-item:active { transform: scale(.985); }
.nav-item.active { background: var(--primary-soft); color: var(--primary-strong); }
.nav-item > span { font-size: 17px; text-align: center; }
.nav-item b { min-width: 0; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; font-size: 13.5px; font-weight: 680; }
.nav-item em {
  min-width: 24px;
  padding: 2px 6px;
  border-radius: 999px;
  background: var(--surface-soft);
  font-size: 11px;
  font-style: normal;
  font-weight: 700;
  text-align: center;
}
.nav-item.active em { background: white; }
.sidebar-foot { display: grid; gap: 8px; padding: 14px 8px 2px; color: var(--text-3); }
.storage-badge { display: flex; align-items: center; gap: 7px; font-size: 11.5px; color: var(--text-2); }
.storage-badge .pulse-dot { width: 7px; height: 7px; }
.sidebar-foot small { font-size: 11px; }

.main-content { min-width: 0; padding: 28px clamp(20px, 3vw, 44px) 56px; }
.view { display: none; max-width: 1320px; margin: 0 auto; animation: view-in .2s ease both; }
.view.active { display: block; }
.page-head { display: flex; align-items: flex-start; justify-content: space-between; gap: 20px; margin-bottom: 22px; }
.page-title { margin: 0 0 4px; font-size: clamp(24px, 3vw, 32px); line-height: 1.2; letter-spacing: -.7px; }
.page-description { margin: 0; color: var(--text-2); max-width: 760px; }
.page-actions { display: flex; flex-wrap: wrap; justify-content: flex-end; gap: 8px; }

.button, .icon-button {
  border: 1px solid transparent;
  background: none;
  cursor: pointer;
  transition: background .15s ease, border-color .15s ease, color .15s ease, transform .08s ease, box-shadow .15s ease;
}
.button {
  min-height: 40px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 8px 14px;
  border-radius: 8px;
  font-size: 13.5px;
  font-weight: 680;
  white-space: nowrap;
}
.button:hover { transform: translateY(-1px); }
.button:active { transform: translateY(0) scale(.98); }
.button.primary { background: var(--primary); border-color: var(--primary); color: white; box-shadow: 0 2px 8px rgba(39, 120, 212, .16); }
.button.primary:hover { background: var(--primary-strong); border-color: var(--primary-strong); }
.button.secondary { background: var(--surface); border-color: var(--border-strong); color: var(--text); }
.button.secondary:hover { background: var(--surface-soft); border-color: #b8c0cc; }
.button.ghost { background: transparent; color: var(--primary-strong); }
.button.ghost:hover { background: var(--primary-soft); }
.button.danger { background: var(--red); color: white; border-color: var(--red); }
.button.danger-soft { background: var(--red-soft); color: var(--red); border-color: transparent; }
.button.compact { min-height: 34px; padding: 6px 11px; font-size: 12.5px; }
.button[disabled] { opacity: .48; cursor: not-allowed; transform: none; }
.icon-button {
  width: 40px;
  height: 40px;
  display: inline-grid;
  place-items: center;
  border-radius: 8px;
  color: var(--text-2);
  font-size: 20px;
}
.icon-button:hover { background: var(--surface-soft); color: var(--text); }
.icon-button.small { width: 32px; height: 32px; font-size: 16px; }

.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
}
.card-pad { padding: 20px; }
.card-head { display: flex; align-items: flex-start; justify-content: space-between; gap: 16px; padding: 18px 20px; border-bottom: 1px solid var(--border); }
.card-head h2, .section-title { margin: 0; font-size: 16px; line-height: 1.35; letter-spacing: -.15px; }
.card-head p { margin: 3px 0 0; color: var(--text-2); font-size: 13px; }
.card-actions { display: flex; align-items: center; gap: 8px; flex-wrap: wrap; justify-content: flex-end; }
.section-kicker { margin-bottom: 6px; color: var(--primary-strong); font-size: 11px; font-weight: 800; letter-spacing: .8px; text-transform: uppercase; }
.muted { color: var(--text-2); }
.subtle { color: var(--text-3); }
.small { font-size: 12.5px; }
.mono { font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace; }

.kpi-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(170px, 1fr)); gap: 12px; margin-bottom: 16px; }
.kpi {
  min-height: 104px;
  padding: 14px 16px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
}
.kpi-top { display: flex; align-items: center; justify-content: space-between; gap: 8px; color: var(--text-2); font-size: 12.5px; font-weight: 650; }
.kpi-icon { width: 28px; height: 28px; display: grid; place-items: center; border-radius: 8px; background: var(--surface-soft); color: var(--primary-strong); font-size: 14px; }
.kpi-value { margin-top: 10px; font-size: 23px; line-height: 1.1; font-weight: 800; letter-spacing: -.5px; }
.kpi-meta { margin-top: 6px; color: var(--text-2); font-size: 11.5px; }
.kpi.green .kpi-icon { background: var(--green-soft); color: var(--green); }
.kpi.red .kpi-icon { background: var(--red-soft); color: var(--red); }
.kpi.orange .kpi-icon { background: var(--orange-soft); color: var(--orange); }

.dashboard-grid { display: grid; grid-template-columns: minmax(0, 1.45fr) minmax(300px, .75fr); gap: 16px; }
.quick-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 10px; padding: 16px 20px 20px; }
.quick-action {
  min-height: 112px;
  padding: 16px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  align-items: flex-start;
  border: 1px solid var(--border);
  border-radius: 9px;
  background: var(--surface);
  cursor: pointer;
  text-align: left;
  transition: border-color .15s, background .15s, transform .1s;
}
.quick-action:hover { border-color: #a9c8e8; background: var(--primary-soft); transform: translateY(-2px); }
.quick-action span { color: var(--primary); font-size: 20px; }
.quick-action b { font-size: 13.5px; }
.quick-action small { color: var(--text-2); }
.activity-list { display: grid; padding: 4px 20px 12px; }
.activity-item { display: grid; grid-template-columns: 34px minmax(0, 1fr) auto; gap: 10px; align-items: center; padding: 11px 0; border-bottom: 1px solid var(--border); }
.activity-item:last-child { border-bottom: 0; }
.activity-icon { width: 32px; height: 32px; display: grid; place-items: center; border-radius: 8px; background: var(--surface-soft); color: var(--text-2); }
.activity-copy { min-width: 0; }
.activity-copy b { display: block; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; font-size: 13px; }
.activity-copy small { color: var(--text-2); }
.activity-time { color: var(--text-3); font-size: 11.5px; white-space: nowrap; }

.month-bar { display: grid; grid-template-columns: auto minmax(170px, 1fr) auto; align-items: center; gap: 10px; }
.month-title { text-align: center; }
.month-title strong { display: block; font-size: 21px; letter-spacing: -.3px; }
.month-title span { color: var(--text-2); font-size: 12.5px; }
.month-button { width: 42px; height: 42px; display: grid; place-items: center; border: 1px solid var(--border); border-radius: 8px; background: var(--surface); cursor: pointer; font-size: 20px; }
.month-button:hover { background: var(--surface-soft); border-color: var(--border-strong); }
.month-dots { display: flex; justify-content: center; flex-wrap: wrap; gap: 4px; margin-top: 14px; }
.month-dot { min-width: 34px; height: 30px; padding: 0 7px; border: 1px solid transparent; border-radius: 7px; background: transparent; color: var(--text-2); cursor: pointer; font-size: 12px; font-weight: 650; }
.month-dot:hover { background: var(--surface-soft); }
.month-dot.active { background: var(--primary-soft); border-color: #c7ddf2; color: var(--primary-strong); }

.filter-bar { display: flex; flex-wrap: wrap; gap: 9px; align-items: center; padding: 14px 16px; }
.search-box { position: relative; flex: 1 1 240px; }
.search-box > span { position: absolute; left: 12px; top: 50%; transform: translateY(-50%); color: var(--text-3); pointer-events: none; }
.search-box input { padding-left: 36px; width: 100%; }
input, textarea, select {
  min-height: 40px;
  width: 100%;
  padding: 9px 11px;
  border: 1px solid var(--border-strong);
  border-radius: 8px;
  background: var(--surface);
  color: var(--text);
}
textarea { resize: vertical; }
select { width: auto; min-width: 150px; cursor: pointer; }
input::placeholder, textarea::placeholder { color: var(--text-3); }
.checkbox { display: inline-flex; align-items: center; gap: 7px; color: var(--text-2); font-size: 13px; cursor: pointer; }
.checkbox input { width: 16px; min-height: 16px; accent-color: var(--primary); }

.attendance-layout { display: grid; grid-template-columns: minmax(0, 1fr); gap: 16px; }
.attendance-layout > *, .report-content > *, .report-layout > *, .history-layout > *, .dashboard-grid > * { min-width: 0; }
.main-content > .view { min-width: 0; }
.attendance-stats { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 10px; }
.mini-stat { padding: 13px 15px; background: var(--surface); border: 1px solid var(--border); border-radius: 9px; }
.mini-stat b { display: block; font-size: 22px; line-height: 1.1; }
.mini-stat span { color: var(--text-2); font-size: 12px; }
.mini-stat.present b { color: var(--green); }
.mini-stat.absent b { color: var(--red); }
.mini-stat.makeup b { color: var(--primary); }
.attendance-table-wrap { max-height: 620px; max-width: 100%; overflow: auto; border-top: 1px solid var(--border); }
.attendance-table { width: max-content; min-width: 100%; border-collapse: separate; border-spacing: 0; font-size: 12.5px; }
.attendance-table th, .attendance-table td { height: 42px; padding: 4px; text-align: center; border-right: 1px solid #edf0f3; border-bottom: 1px solid #edf0f3; }
.attendance-table thead th { position: sticky; top: 0; z-index: 3; background: #f8fafc; font-weight: 720; }
.attendance-table tfoot td { position: sticky; bottom: 0; z-index: 2; background: #f8fafc; font-weight: 700; }
.attendance-table .student-col { position: sticky; left: 0; z-index: 2; width: 230px; min-width: 230px; padding: 0 12px; background: var(--surface); text-align: left; }
.attendance-table thead .student-col { z-index: 5; background: #f8fafc; }
.attendance-table tfoot .student-col { z-index: 4; background: #f8fafc; }
.attendance-table tbody tr:nth-child(even) td { background-color: #fbfcfd; }
.attendance-table tbody tr:nth-child(even) .student-col { background-color: #fbfcfd; }
.attendance-table tbody tr:hover td { background-color: #f3f7fb; }
.attendance-table tbody tr:hover .student-col { background-color: #f3f7fb; }
.student-cell { display: flex; align-items: center; gap: 9px; min-width: 0; }
.student-index { width: 24px; height: 24px; flex: 0 0 auto; display: grid; place-items: center; border-radius: 7px; background: var(--surface-soft); color: var(--text-2); font-size: 10px; font-weight: 750; }
.student-cell button { min-width: 0; border: 0; padding: 0; background: none; cursor: pointer; text-align: left; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; font-weight: 650; }
.student-cell button:hover { color: var(--primary-strong); text-decoration: underline; }
.day-head { min-width: 42px; cursor: pointer; }
.day-head .weekday { display: block; color: var(--text-3); font-size: 9px; text-transform: uppercase; }
.day-head .day-number { display: inline-grid; width: 26px; height: 26px; place-items: center; border-radius: 7px; }
.day-head.weekend .weekday { color: var(--red); }
.day-head.selected .day-number { background: var(--primary); color: white; }
.day-head.today .day-number { box-shadow: inset 0 0 0 2px var(--primary); }
.day-head.selected.today .day-number { box-shadow: inset 0 0 0 2px white; }
.day-head.has-data::after { content: ""; display: block; width: 4px; height: 4px; margin: -1px auto 0; border-radius: 50%; background: var(--orange); }
.status-cell-button { width: 32px; height: 32px; border: 0; border-radius: 7px; background: transparent; color: var(--text-3); cursor: pointer; font-size: 12px; font-weight: 800; }
.status-cell-button:hover { background: var(--surface-soft); color: var(--text); }
.status-cell-button.present { background: var(--green-soft); color: var(--green); }
.status-cell-button.absent { background: var(--red-soft); color: var(--red); }
.status-cell-button.makeup { background: var(--primary-soft); color: var(--primary-strong); }
.rate-col { min-width: 68px; font-weight: 750; color: var(--primary-strong); }
.total-mini { display: flex; justify-content: center; gap: 5px; font-size: 10px; }
.total-mini .p { color: var(--green); }.total-mini .a { color: var(--red); }.total-mini .m { color: var(--primary); }
.empty-state { min-height: 240px; padding: 36px 24px; display: grid; place-items: center; text-align: center; color: var(--text-2); }
.empty-state.compact { min-height: 120px; padding: 20px; }
.empty-state .empty-icon { width: 52px; height: 52px; margin: 0 auto 12px; display: grid; place-items: center; border-radius: 12px; background: var(--primary-soft); color: var(--primary); font-size: 24px; }
.empty-state h3 { margin: 0 0 5px; color: var(--text); font-size: 16px; }
.empty-state p { margin: 0 auto 15px; max-width: 420px; }

.legend { display: flex; flex-wrap: wrap; align-items: center; gap: 14px; padding: 12px 16px; border-top: 1px solid var(--border); color: var(--text-2); font-size: 12px; }
.legend-item { display: inline-flex; align-items: center; gap: 6px; }
.legend-code { width: 24px; height: 24px; display: grid; place-items: center; border-radius: 6px; font-size: 10px; font-weight: 800; }
.legend-code.present { background: var(--green-soft); color: var(--green); }.legend-code.absent { background: var(--red-soft); color: var(--red); }.legend-code.makeup { background: var(--primary-soft); color: var(--primary-strong); }
.day-detail-grid { display: grid; grid-template-columns: minmax(250px, .72fr) minmax(420px, 1.28fr); gap: 16px; }
.day-summary { padding: 20px; }
.day-summary .date-large { margin: 3px 0 12px; font-size: 22px; font-weight: 760; }
.field { display: grid; gap: 6px; }
.field > span { color: var(--text-2); font-size: 12px; font-weight: 680; }
.field + .field { margin-top: 12px; }
.day-roster { max-height: 430px; overflow: auto; }
.day-row { min-height: 58px; padding: 9px 14px; display: grid; grid-template-columns: minmax(140px, 1fr) auto minmax(130px, .85fr); align-items: center; gap: 10px; border-bottom: 1px solid var(--border); }
.day-row:last-child { border-bottom: 0; }
.day-row-name { min-width: 0; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; font-size: 13px; font-weight: 650; }
.segmented { display: inline-flex; padding: 2px; border: 1px solid var(--border); border-radius: 8px; background: var(--surface-soft); }
.segmented button { width: 32px; height: 30px; border: 0; border-radius: 6px; background: transparent; color: var(--text-3); cursor: pointer; font-size: 11px; font-weight: 800; }
.segmented button:hover { color: var(--text); }
.segmented button.on-present { background: var(--green); color: white; }.segmented button.on-absent { background: var(--red); color: white; }.segmented button.on-makeup { background: var(--primary); color: white; }.segmented button.on-clear { background: var(--surface); color: var(--text); box-shadow: 0 1px 3px rgba(0,0,0,.08); }
.day-row input { min-height: 34px; padding: 6px 9px; font-size: 12px; }

.student-toolbar { display: flex; flex-wrap: wrap; gap: 9px; padding: 16px 18px; border-bottom: 1px solid var(--border); }
.student-list { display: grid; }
.student-row { min-height: 68px; padding: 10px 16px; display: grid; grid-template-columns: 38px minmax(180px, 1.2fr) minmax(170px, 1fr) auto; align-items: center; gap: 12px; border-bottom: 1px solid var(--border); }
.student-row:last-child { border-bottom: 0; }
.student-row:hover { background: #fbfcfd; }
.student-row.draft { background: var(--primary-soft); border: 1px dashed #9fc4e8; margin: 8px; border-radius: 9px; }
.avatar { width: 36px; height: 36px; display: grid; place-items: center; border-radius: 9px; background: var(--surface-soft); color: var(--text-2); font-size: 12px; font-weight: 800; }
.avatar.draft { background: white; color: var(--primary); }
.student-main { min-width: 0; }
.student-main b { display: block; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.student-main small, .student-note { color: var(--text-2); }
.student-note { min-width: 0; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; font-size: 12.5px; }
.row-actions { display: flex; align-items: center; justify-content: flex-end; gap: 5px; }
.draft-fields { display: grid; grid-template-columns: 1fr .8fr; gap: 8px; grid-column: 2 / 4; }
.plus-tile {
  margin: 12px;
  min-height: 72px;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  border: 1.5px dashed var(--border-strong);
  border-radius: 9px;
  background: transparent;
  color: var(--text-2);
  cursor: pointer;
  font-weight: 650;
}
.plus-tile .plus-box { width: 32px; height: 32px; display: grid; place-items: center; border: 1px solid #9fc4e8; border-radius: 8px; background: var(--primary-soft); color: var(--primary); font-size: 22px; }
.plus-tile:hover { border-color: var(--primary); color: var(--primary-strong); background: #f8fbfe; }
.draft-banner { margin: 0 18px 14px; padding: 10px 12px; display: flex; align-items: center; justify-content: space-between; gap: 10px; border-radius: 8px; background: var(--orange-soft); color: #8a4b16; font-size: 12.5px; }

.report-layout { display: grid; grid-template-columns: minmax(260px, .72fr) minmax(0, 1.65fr); gap: 16px; align-items: start; }
.report-picker { position: sticky; top: 92px; overflow: hidden; }
.report-search { padding: 14px; border-bottom: 1px solid var(--border); }
.result-group-title { padding: 12px 14px 6px; color: var(--text-3); font-size: 10.5px; font-weight: 800; letter-spacing: .7px; text-transform: uppercase; }
.result-list { max-height: calc(100vh - 250px); overflow: auto; padding-bottom: 8px; }
.result-item { width: calc(100% - 12px); min-height: 52px; margin: 3px 6px; padding: 8px 10px; display: grid; grid-template-columns: 34px minmax(0, 1fr) auto; align-items: center; gap: 9px; border: 0; border-radius: 8px; background: transparent; text-align: left; cursor: pointer; }
.result-item:hover { background: var(--surface-soft); }
.result-item.active { background: var(--primary-soft); color: var(--primary-strong); }
.result-item.draft { cursor: default; color: var(--text-2); }
.result-item .avatar { width: 32px; height: 32px; }
.result-item-copy { min-width: 0; }
.result-item-copy b, .result-item-copy small { display: block; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.result-item-copy b { font-size: 13px; }.result-item-copy small { color: var(--text-2); font-size: 11.5px; }
.tag { display: inline-flex; align-items: center; min-height: 24px; padding: 3px 7px; border-radius: 999px; background: var(--surface-soft); color: var(--text-2); font-size: 10.5px; font-weight: 750; }
.tag.draft { background: var(--orange-soft); color: var(--orange); }
.report-content { display: grid; gap: 16px; }
.student-report-head { padding: 20px; display: flex; align-items: center; justify-content: space-between; gap: 18px; }
.student-identity { display: flex; align-items: center; gap: 13px; min-width: 0; }
.student-identity .avatar { width: 48px; height: 48px; font-size: 16px; background: var(--primary-soft); color: var(--primary); }
.student-identity h2 { margin: 0; font-size: 20px; }
.student-identity p { margin: 3px 0 0; color: var(--text-2); font-size: 12.5px; }
.report-kpis { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 10px; }
.report-kpi { padding: 14px; border: 1px solid var(--border); border-radius: 9px; background: var(--surface); }
.report-kpi b { display: block; font-size: 21px; }.report-kpi span { color: var(--text-2); font-size: 11.5px; }
.report-kpi.present b { color: var(--green); }.report-kpi.absent b { color: var(--red); }.report-kpi.makeup b { color: var(--primary); }
.month-breakdown { display: grid; gap: 10px; padding: 16px 20px 20px; }
.month-bar-row { display: grid; grid-template-columns: 82px minmax(120px, 1fr) 150px; align-items: center; gap: 12px; font-size: 12.5px; }
.progress-track { height: 8px; overflow: hidden; display: flex; border-radius: 5px; background: var(--surface-soft); }
.progress-seg.present { background: var(--green); }.progress-seg.absent { background: var(--red); }.progress-seg.makeup { background: var(--primary); }
.month-counts { display: flex; justify-content: flex-end; gap: 8px; color: var(--text-2); font-size: 11.5px; }
.history-table-wrap { max-height: 540px; overflow: auto; }
.data-table { width: 100%; border-collapse: separate; border-spacing: 0; font-size: 12.5px; }
.data-table th, .data-table td { padding: 10px 12px; border-bottom: 1px solid var(--border); text-align: left; vertical-align: top; }
.data-table th { position: sticky; top: 0; z-index: 1; background: #f8fafc; color: var(--text-2); font-size: 11px; text-transform: uppercase; letter-spacing: .4px; }
.data-table tr:last-child td { border-bottom: 0; }
.status-label { display: inline-flex; align-items: center; gap: 6px; min-height: 24px; padding: 3px 8px; border-radius: 999px; font-size: 11px; font-weight: 720; white-space: nowrap; }
.status-label.present { background: var(--green-soft); color: var(--green); }.status-label.absent { background: var(--red-soft); color: var(--red); }.status-label.makeup { background: var(--primary-soft); color: var(--primary-strong); }.status-label.unmarked { background: var(--surface-soft); color: var(--text-2); }

.history-controls { display: flex; flex-wrap: wrap; align-items: center; gap: 9px; padding: 14px 16px; border-bottom: 1px solid var(--border); }
.history-layout { display: grid; grid-template-columns: minmax(0, 1.3fr) minmax(290px, .7fr); gap: 16px; }
.timeline { padding: 4px 20px 12px; }
.timeline-item { position: relative; display: grid; grid-template-columns: 34px minmax(0, 1fr) auto; gap: 11px; padding: 13px 0; border-bottom: 1px solid var(--border); }
.timeline-item:last-child { border-bottom: 0; }
.timeline-icon { width: 32px; height: 32px; display: grid; place-items: center; border-radius: 8px; background: var(--surface-soft); color: var(--text-2); }
.timeline-copy b { display: block; font-size: 13px; }.timeline-copy p { margin: 2px 0 0; color: var(--text-2); font-size: 11.5px; }.timeline-time { color: var(--text-3); font-size: 11px; white-space: nowrap; }
.snapshot-list { display: grid; padding: 6px 16px 14px; }
.snapshot-item { padding: 11px 0; display: grid; grid-template-columns: minmax(0, 1fr) auto; gap: 10px; align-items: center; border-bottom: 1px solid var(--border); }
.snapshot-item:last-child { border-bottom: 0; }.snapshot-item b { display: block; font-size: 12.5px; }.snapshot-item small { color: var(--text-2); }

.export-builder { padding: 18px 20px 20px; }
.form-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 14px; }
.form-grid .full { grid-column: 1 / -1; }
.form-grid .field + .field { margin-top: 0; }
.export-actions { margin-top: 16px; display: flex; justify-content: flex-end; gap: 8px; }
.export-history-row td:first-child { width: 42%; }
.file-name { display: block; color: var(--text); font-weight: 650; word-break: break-word; }.file-meta { display: block; margin-top: 2px; color: var(--text-2); font-size: 11.5px; }

.backup-grid { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 16px; }
.backup-card { padding: 20px; }
.backup-card h2 { margin: 0 0 6px; font-size: 17px; }.backup-card p { margin: 0 0 16px; color: var(--text-2); }
.backup-actions { display: flex; flex-wrap: wrap; gap: 8px; }
.storage-meter { height: 8px; margin: 16px 0 7px; overflow: hidden; border-radius: 6px; background: var(--surface-soft); }.storage-meter span { display: block; height: 100%; border-radius: inherit; background: var(--primary); }
.info-list { display: grid; gap: 10px; margin: 14px 0 0; padding: 0; list-style: none; }.info-list li { display: flex; justify-content: space-between; gap: 12px; padding-bottom: 8px; border-bottom: 1px solid var(--border); color: var(--text-2); font-size: 12.5px; }.info-list b { color: var(--text); }
.callout { padding: 14px 16px; display: flex; align-items: flex-start; gap: 10px; border-radius: 9px; background: var(--primary-soft); color: #174e82; font-size: 12.5px; }.callout.warning { background: var(--orange-soft); color: #7c4619; }

.dialog {
  width: min(620px, calc(100vw - 32px));
  max-height: min(86vh, 900px);
  padding: 0;
  border: 0;
  border-radius: 12px;
  background: transparent;
  color: var(--text);
  overflow: visible;
}
.dialog.wide { width: min(1040px, calc(100vw - 32px)); }
.dialog::backdrop { background: rgba(15, 23, 42, .46); backdrop-filter: blur(3px); }
.dialog-card { max-height: 86vh; overflow: auto; padding: 22px; border: 1px solid var(--border); border-radius: 12px; background: var(--surface); box-shadow: 0 24px 70px rgba(16, 24, 40, .26); }
.dialog-card.compact-card { max-width: 460px; margin: auto; }
.dialog-head { display: flex; align-items: flex-start; justify-content: space-between; gap: 18px; margin-bottom: 18px; }
.dialog-head h2 { margin: 0; font-size: 20px; }.dialog-head p { margin: 4px 0 0; color: var(--text-2); font-size: 13px; }
.dialog-actions { display: flex; justify-content: flex-end; gap: 8px; margin-top: 18px; }
.preview-summary { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 8px; margin-bottom: 12px; }
.preview-chip { padding: 10px 11px; border: 1px solid var(--border); border-radius: 8px; }.preview-chip b { display: block; font-size: 16px; }.preview-chip span { color: var(--text-2); font-size: 11px; }
.preview-table-wrap { max-height: 48vh; overflow: auto; border: 1px solid var(--border); border-radius: 8px; }
.preview-table { width: max-content; min-width: 100%; border-collapse: collapse; font-size: 11.5px; }
.preview-table th, .preview-table td { max-width: 260px; padding: 8px 9px; border-right: 1px solid var(--border); border-bottom: 1px solid var(--border); overflow: hidden; text-overflow: ellipsis; white-space: nowrap; text-align: left; }
.preview-table th { position: sticky; top: 0; background: #edf4fb; color: #174e82; font-weight: 750; }.preview-table tr:last-child td { border-bottom: 0; }.preview-table th:last-child, .preview-table td:last-child { border-right: 0; }
.preview-note { margin-top: 10px; color: var(--text-2); font-size: 12px; }

.toast-stack { position: fixed; right: 20px; bottom: 20px; z-index: 100; display: grid; gap: 8px; pointer-events: none; }
.toast { min-width: 260px; max-width: min(420px, calc(100vw - 40px)); padding: 12px 14px; display: grid; grid-template-columns: 22px minmax(0, 1fr); gap: 8px; align-items: start; border: 1px solid var(--border); border-radius: 9px; background: #202124; color: white; box-shadow: 0 12px 36px rgba(16,24,40,.22); animation: toast-in .22s ease both; font-size: 13px; }
.toast.success .toast-symbol { color: #85d5aa; }.toast.error .toast-symbol { color: #ff9b94; }.toast.warning .toast-symbol { color: #f6bd82; }

@keyframes view-in { from { opacity: 0; transform: translateY(5px); } to { opacity: 1; transform: none; } }
@keyframes toast-in { from { opacity: 0; transform: translateY(8px); } to { opacity: 1; transform: none; } }
@keyframes pulse { 50% { opacity: .35; } }

@media (max-width: 1080px) {
  :root { --sidebar: 190px; }
  .kpi-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .dashboard-grid, .history-layout { grid-template-columns: 1fr; }
  .report-layout { grid-template-columns: 270px minmax(0, 1fr); }
  .day-detail-grid { grid-template-columns: 1fr; }
  .report-kpis { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}

@media (max-width: 820px) {
  .topbar { height: 64px; padding: 0 16px; }
  .workspace { display: block; }
  .sidebar { position: sticky; top: 64px; z-index: 30; width: 100%; height: auto; padding: 7px 10px; border-right: 0; border-bottom: 1px solid var(--border); overflow-x: auto; }
  .sidebar nav { display: flex; gap: 4px; min-width: max-content; }
  .nav-item { width: auto; grid-template-columns: 20px auto auto; padding: 0 10px; }
  .sidebar-foot { display: none; }
  .main-content { padding: 22px 16px 44px; }
  .report-layout { grid-template-columns: 1fr; }
  .report-picker { position: static; }
  .result-list { max-height: 260px; }
  .backup-grid { grid-template-columns: 1fr; }
  .student-row { grid-template-columns: 36px minmax(0, 1fr) auto; }
  .student-note { grid-column: 2 / 3; }
  .draft-fields { grid-column: 2 / 3; grid-template-columns: 1fr; }
  .quick-grid { grid-template-columns: 1fr; }
}

@media (max-width: 560px) {
  .brand-subtitle, .save-indicator span:last-child, .topbar-actions .button { display: none; }
  .topbar-actions { gap: 2px; }
  .page-head { display: grid; }
  .page-actions { justify-content: flex-start; }
  .kpi-grid, .attendance-stats, .report-kpis, .preview-summary, .form-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .month-dots { display: none; }
  .filter-bar { align-items: stretch; }
  .filter-bar select { width: 100%; }
  .day-row { grid-template-columns: 1fr auto; }
  .day-row input { grid-column: 1 / -1; }
  .student-report-head { align-items: flex-start; flex-direction: column; }
  .month-bar-row { grid-template-columns: 68px 1fr; }
  .month-counts { grid-column: 1 / -1; justify-content: flex-start; }
  .student-row { padding: 10px 12px; }
  .row-actions .button span.action-label { display: none; }
  .dialog-card { padding: 18px; }
}

@media (prefers-color-scheme: dark) {
  :root {
    color-scheme: dark;
    --canvas: #211517;
    --surface: #2a1b1d;
    --surface-soft: #3a2326;
    --surface-raised: #2f1d20;
    --text: #f5f6f7;
    --text-2: rgba(255,255,255,.68);
    --text-3: rgba(255,255,255,.45);
    --border: rgba(255,255,255,.12);
    --border-strong: rgba(255,255,255,.2);
    --primary: #f28b8f;
    --primary-strong: #f6a9ac;
    --primary-soft: rgba(229,72,77,.16);
    --green: #72bc8f;
    --green-soft: rgba(114,188,143,.13);
    --orange: #de9255;
    --orange-soft: rgba(222,146,85,.13);
    --red: #e97366;
    --red-soft: rgba(233,115,102,.13);
    --shadow: none;
  }
  .topbar { background: rgba(32,33,36,.94); }
  .attendance-table thead th, .attendance-table tfoot td, .data-table th { background: #27292c; }
  .attendance-table .student-col { background: var(--surface); }
  .attendance-table thead .student-col, .attendance-table tfoot .student-col { background: #27292c; }
  .attendance-table tbody tr:nth-child(even) td, .attendance-table tbody tr:nth-child(even) .student-col { background-color: #232528; }
  .attendance-table tbody tr:hover td, .attendance-table tbody tr:hover .student-col { background-color: #2b3036; }
  .student-row:hover { background: #242629; }
  .preview-table th { background: #26384a; color: #b8d8f8; }
  .callout { color: #b8d8f8; }.callout.warning { color: #f1ba8d; }
  .plus-tile:hover { background: rgba(94,159,232,.08); }
  ::selection { background: #31577e; }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { scroll-behavior: auto !important; animation-duration: .001ms !important; transition-duration: .001ms !important; }
}

/* ---------- Insight / suggestion cards ---------- */
.insight-card { overflow: hidden; }
.insight-card .card-pad { padding: 18px 20px; }
.insight-card.warning-card-high { border-color: rgba(217, 77, 67, .4); }
.insight-card.warning-card-high .section-kicker { color: var(--red); }
.insight-card.warning-card-medium { border-color: rgba(197, 109, 36, .4); }
.insight-card.warning-card-medium .section-kicker { color: var(--orange); }
.insight-card.warning-card-good .section-kicker { color: var(--green); }
.suggestion-list { margin: 0; padding-left: 18px; display: grid; gap: 6px; font-size: 13px; }
.suggestion-list li::marker { color: var(--primary); }
.watchlist-item {
  display: grid; grid-template-columns: 34px minmax(0,1fr) auto auto; gap: 10px; align-items: center;
  padding: 10px 0; border-bottom: 1px solid var(--border);
}
.watchlist-item:last-child { border-bottom: 0; }
.watchlist-copy { min-width: 0; }
.watchlist-copy b { display: block; font-size: 13px; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.watchlist-copy small { color: var(--text-2); font-size: 11.5px; }
.watchlist-badge { font-size: 10.5px; font-weight: 750; padding: 3px 8px; border-radius: 999px; white-space: nowrap; }
.watchlist-badge.high { background: var(--red-soft); color: var(--red); }
.watchlist-badge.medium { background: var(--orange-soft); color: var(--orange); }

/* ---------- Cute red theme: hiệu ứng đáng yêu ---------- */
.button, .icon-button, .month-button, .quick-action, .nav-item { transition-timing-function: cubic-bezier(.34, 1.56, .64, 1); }
.button:active, .icon-button:active, .month-button:active { transform: scale(.9); }
.status-cell-button { transition: transform .18s cubic-bezier(.34, 1.56, .64, 1), background .15s, color .15s; }
.status-cell-button:hover { transform: scale(1.15) rotate(-5deg); }
.status-cell-button:active { transform: scale(.8); }
.brand-name::after { content: "✿"; margin-left: 6px; color: var(--primary); font-size: .85em; display: inline-block; animation: floaty 3s ease-in-out infinite; }
.panda-logo { background: transparent !important; box-shadow: none !important; animation: floaty 3.2s ease-in-out infinite; }
.panda-logo .panda-ear { transform-origin: center 26px; animation: ear-wiggle 4s ease-in-out infinite; }
.panda-logo .panda-ear.right { animation-delay: .45s; }
.panda-logo .panda-eye { transform-box: fill-box; transform-origin: center; animation: blink 4.6s infinite; }
.panda-logo .panda-eye.right { animation-delay: .06s; }
@keyframes floaty { 0%, 100% { transform: translateY(0); } 50% { transform: translateY(-3px); } }
@keyframes ear-wiggle { 0%, 88%, 100% { transform: rotate(0deg); } 92% { transform: rotate(-10deg); } 96% { transform: rotate(8deg); } }
@keyframes blink { 0%, 93%, 100% { transform: scaleY(1); } 96% { transform: scaleY(.1); } }
.toast { border-radius: 999px; animation: toast-pop .32s cubic-bezier(.34, 1.56, .64, 1) both; }
@keyframes toast-pop { 0% { transform: translateY(10px) scale(.9); opacity: 0; } 100% { transform: none; opacity: 1; } }
.kpi { transition: transform .2s cubic-bezier(.34, 1.56, .64, 1), box-shadow .2s; }
.kpi:hover { transform: translateY(-3px); box-shadow: 0 10px 24px rgba(197, 48, 49, .1); }
.quick-action:hover span { display: inline-block; animation: floaty 1s ease-in-out infinite; }
.nav-item.active > span { display: inline-block; animation: floaty 2.4s ease-in-out infinite; }
.avatar { border-radius: 50%; background: var(--primary-soft); color: var(--primary-strong); }
.month-dot.active { border-radius: 999px; }
.month-title strong { color: var(--primary-strong); }
.save-dot, .pulse-dot { background: var(--primary); }
.save-indicator.saving .save-dot { background: var(--orange); }

/* ---------- Trang giới thiệu ---------- */
.about-hero { display: flex; align-items: center; gap: 22px; padding: 26px; }
.panda-logo.big { width: 84px; height: 84px; flex: none; }
.about-hero h2 { margin: 0 0 6px; font-size: 22px; letter-spacing: -.3px; }
.about-hero p { margin: 0 0 12px; color: var(--text-2); font-size: 13.5px; }
.author-badge { display: inline-flex; align-items: center; gap: 7px; padding: 8px 15px; border-radius: 999px; background: var(--primary-soft); color: var(--primary-strong); font-size: 13.5px; font-weight: 600; }
.feature-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 12px; }
.feature-card { padding: 18px; transition: transform .2s cubic-bezier(.34, 1.56, .64, 1), box-shadow .2s; }
.feature-card:hover { transform: translateY(-4px) rotate(-.4deg); box-shadow: 0 12px 26px rgba(197, 48, 49, .12); }
.feature-icon { width: 40px; height: 40px; display: grid; place-items: center; border-radius: 12px; background: var(--primary-soft); color: var(--primary); font-size: 18px; margin-bottom: 12px; }
.feature-card h3 { margin: 0 0 4px; font-size: 15px; }
.feature-use { margin: 0 0 8px; color: var(--text); font-size: 13px; font-weight: 600; }
.feature-how { margin: 0; color: var(--text-2); font-size: 12.5px; line-height: 1.55; }
@media (max-width: 1080px) { .feature-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); } }
@media (max-width: 640px) { .feature-grid { grid-template-columns: 1fr; } .about-hero { flex-direction: column; text-align: center; } }

/* ---------- v3: Lớp học (tag), Doanh thu & trạng thái thiết bị ---------- */
.main-content { scroll-margin-top: 84px; }
.device-badge { display: inline-flex; align-items: center; gap: 6px; min-height: 34px; padding: 0 11px; border: 1px solid var(--border); border-radius: 999px; background: var(--surface-soft); color: var(--text-2); font-size: 12px; font-weight: 700; white-space: nowrap; }
.device-badge.mobile { background: var(--primary-soft); color: var(--primary-strong); border-color: transparent; }

.attendance-top-grid { display: grid; grid-template-columns: minmax(0, 1.35fr) minmax(250px, .65fr); gap: 16px; align-items: stretch; }
.attendance-top-grid > * { min-width: 0; }
.fee-card input { max-width: 230px; }

.class-bar { padding: 14px 16px; }
.class-bar-head { display: flex; align-items: flex-start; justify-content: space-between; gap: 12px; margin-bottom: 10px; }
.class-chips { display: flex; flex-wrap: wrap; gap: 8px; }
.class-chip {
  display: inline-flex; align-items: center; gap: 7px;
  min-height: 34px; padding: 4px 12px;
  border: 1px solid var(--border-strong); border-radius: 999px;
  background: var(--surface); color: var(--text);
  font-size: 12.5px; font-weight: 680; cursor: pointer;
  transition: background .15s, border-color .15s, transform .12s cubic-bezier(.34,1.56,.64,1);
}
button.class-chip:hover { background: var(--surface-soft); transform: translateY(-1px); }
.class-chip.active { background: var(--primary-soft); border-color: var(--primary); color: var(--primary-strong); }
.class-chip.small { min-height: 26px; padding: 2px 9px; font-size: 11px; }
.class-chip.chip-split { padding: 2px 5px 2px 12px; cursor: default; }
.class-chip .class-chip-main { display: inline-flex; align-items: center; gap: 7px; border: 0; background: none; padding: 0; cursor: pointer; font: inherit; color: inherit; min-height: 28px; }
.class-chip .class-chip-remove { width: 22px; height: 22px; display: grid; place-items: center; border: 0; border-radius: 50%; background: transparent; color: var(--text-3); cursor: pointer; font-size: 14px; }
.class-chip .class-chip-remove:hover { background: var(--red-soft); color: var(--red); }
.class-dot { width: 9px; height: 9px; border-radius: 50%; flex: none; }

.class-tag { display: inline-flex; align-items: center; gap: 6px; min-height: 24px; padding: 2px 9px; border-radius: 999px; background: var(--surface-soft); font-size: 11px; font-weight: 700; color: var(--text-2); white-space: nowrap; }
.class-tag.small { min-height: 20px; padding: 1px 7px; font-size: 10px; }
.tag-list { display: flex; flex-wrap: wrap; gap: 5px; margin-top: 4px; }
.mini-tags { display: flex; flex-wrap: wrap; gap: 4px; margin-top: 3px; }

.class-overview { display: flex; flex-wrap: wrap; gap: 8px; }
.revenue-mini .revenue-total { font-size: 30px; font-weight: 800; letter-spacing: -1px; color: var(--primary-strong); }
.revenue-mini-list { margin-top: 12px; display: grid; gap: 8px; }
.revenue-mini-row { display: flex; align-items: center; justify-content: space-between; gap: 10px; }

.revenue-filter { margin-bottom: 16px; padding: 14px 16px; display: grid; gap: 10px; }
.rf-row { display: flex; flex-wrap: wrap; align-items: center; gap: 10px; }
.rf-group { display: flex; flex-wrap: wrap; gap: 8px; align-items: center; }
.rf-group .field.inline select { min-width: 124px; }
.rf-note { margin-left: auto; }
.rf-chips { border-top: 1px dashed var(--border); padding-top: 10px; }
.home-title { color: var(--primary-strong); }
@media (max-width: 640px) { .rf-note { margin-left: 0; } }
.field.inline { display: inline-flex; align-items: center; gap: 8px; }
.field.inline > span { white-space: nowrap; }
.revenue-grid { display: grid; grid-template-columns: minmax(0, .9fr) minmax(0, 1.1fr); gap: 16px; align-items: start; }
.revenue-grid > * { min-width: 0; }
.money-cell { text-align: right !important; font-variant-numeric: tabular-nums; white-space: nowrap; }
.data-table tfoot td { font-weight: 750; background: var(--surface-soft); border-bottom: 0; }
.fee-input { width: 140px; min-height: 34px; padding: 5px 8px; font-size: 12.5px; }
.revenue-student { min-width: 0; }
.revenue-student b { display: block; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }

.edit-wrap { grid-column: 2 / 4; display: grid; gap: 8px; min-width: 0; }
.edit-wrap .draft-fields { grid-column: auto; }
.edit-classes { display: flex; flex-wrap: wrap; gap: 6px; align-items: center; }

@media (max-width: 1340px) {
  .revenue-grid { grid-template-columns: 1fr; }
}
@media (max-width: 1080px) {
  .attendance-top-grid { grid-template-columns: 1fr; }
}
@media (max-width: 560px) {
  .device-badge { padding: 0 9px; }
  .device-badge span { display: none; }
  .fee-input { width: 118px; }
  .class-bar-head { flex-direction: column; }
}

/* ---------- v4: Mobile riêng, hồ sơ học sinh, cá nhân hóa & filter chips ---------- */
.filter-chips { display: flex; flex-wrap: wrap; gap: 6px; align-items: center; }
.filter-chip { min-height: 34px; padding: 5px 12px; display: inline-flex; align-items: center; gap: 6px; border: 1px solid var(--border-strong); border-radius: 999px; background: var(--surface); color: var(--text-2); font-size: 12px; font-weight: 680; cursor: pointer; transition: background .15s, color .15s, border-color .15s, transform .12s cubic-bezier(.34,1.56,.64,1); }
.filter-chip:hover { background: var(--surface-soft); color: var(--text); transform: translateY(-1px); }
.filter-chip.active { background: var(--primary); border-color: var(--primary); color: #fff; box-shadow: 0 3px 10px rgba(197,48,49,.22); }
.status-chips { flex: 1 1 auto; }
.picker-chips { display: flex; flex-wrap: wrap; gap: 6px; padding: 10px 14px; border-bottom: 1px solid var(--border); }

.avatar-btn { width: 38px; height: 38px; padding: 0; border: 0; background: none; cursor: pointer; flex: none; border-radius: 50%; transition: transform .18s cubic-bezier(.34,1.56,.64,1); }
.avatar-btn:hover { transform: scale(1.12) rotate(-4deg); }
.avatar-btn .avatar { width: 100%; height: 100%; }
.avatar.has-photo { background-size: cover; background-position: center; border: 2px solid var(--primary-soft); }
.avatar.xl { width: 84px; height: 84px; font-size: 26px; border-radius: 24px; }
.name-btn { border: 0; background: none; padding: 0; font: inherit; font-weight: 700; color: inherit; cursor: pointer; text-align: left; border-radius: 6px; }
.name-btn:hover { color: var(--primary-strong); text-decoration: underline; text-underline-offset: 3px; }
.revenue-student .name-btn { display: block; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; font-weight: 650; }
.day-row-name .name-btn { font-weight: 650; }

.profile-head { display: flex; align-items: center; gap: 16px; margin-bottom: 16px; }
.profile-avatar-wrap { flex: none; }
.profile-avatar-wrap .avatar.xl { box-shadow: 0 8px 20px rgba(197,48,49,.18); }
.profile-photo-actions { display: flex; flex-direction: column; gap: 6px; align-items: flex-start; }
.profile-stats { display: grid; grid-template-columns: repeat(auto-fit, minmax(96px, 1fr)); gap: 8px; margin-top: 16px; }
.profile-stat { padding: 10px 12px; border: 1px solid var(--border); border-radius: 10px; background: var(--surface-soft); text-align: center; }
.profile-stat b { display: block; font-size: 15px; color: var(--primary-strong); }
.profile-stat span { color: var(--text-2); font-size: 11px; }
.effects-check { display: inline-flex; align-items: center; min-height: 40px; padding: 9px 11px; border: 1px solid var(--border-strong); border-radius: 8px; background: var(--surface); }

.backup-hero { display: flex; align-items: center; justify-content: space-between; gap: 20px; padding: 22px; margin-bottom: 16px; background: linear-gradient(135deg, var(--primary-soft), var(--surface) 60%); border-color: var(--border-strong); }
.backup-hero h2 { margin: 0 0 6px; font-size: 18px; }
.backup-hero p { margin: 0 0 8px; color: var(--text-2); font-size: 13px; }
.button.big { min-height: 48px; padding: 12px 20px; font-size: 14.5px; border-radius: 12px; flex: none; }

.step-grid { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 12px; }
.step-card { position: relative; padding: 18px; transition: transform .2s cubic-bezier(.34,1.56,.64,1), box-shadow .2s; }
.step-card:hover { transform: translateY(-4px) rotate(-.4deg); box-shadow: 0 12px 26px rgba(197,48,49,.12); }
.step-card h3 { margin: 0 0 4px; font-size: 14.5px; }
.step-num { position: absolute; top: 12px; right: 14px; width: 26px; height: 26px; display: grid; place-items: center; border-radius: 50%; background: var(--primary); color: #fff; font-size: 12.5px; font-weight: 800; }
@media (max-width: 1080px) { .step-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); } }
@media (max-width: 640px) { .step-grid { grid-template-columns: 1fr; } .backup-hero { flex-direction: column; align-items: flex-start; } }

body[data-accent='pink'] { --primary: #ec5d8a; --primary-strong: #d6407a; --primary-soft: #fde9f1; }
body[data-accent='orange'] { --primary: #ee7a3a; --primary-strong: #d95f1d; --primary-soft: #fdeee2; }
body[data-accent='purple'] { --primary: #8b6fd8; --primary-strong: #7153c9; --primary-soft: #f0ecfb; }

body.no-effects *, body.no-effects *::before, body.no-effects *::after { animation: none !important; transition-duration: .001ms !important; }

#viewDashboard .page-head .section-kicker::after { content: '  🐾'; display: inline-block; animation: floaty 3.6s ease-in-out infinite; }
#viewRevenue .page-head .section-kicker::after { content: '  🐼'; display: inline-block; animation: floaty 4s ease-in-out infinite; }
.dialog[open] .dialog-card { animation: dialog-pop .26s cubic-bezier(.34,1.56,.64,1) both; }
@keyframes dialog-pop { from { transform: translateY(14px) scale(.96); opacity: 0; } to { transform: none; opacity: 1; } }

.dialog-card .dialog-actions { position: sticky; bottom: -22px; margin-left: -22px; margin-right: -22px; padding: 12px 22px 14px; background: var(--surface); border-top: 1px solid var(--border); border-radius: 0 0 12px 12px; }

.mobile-tabbar, .mobile-sheet, .mobile-sheet-backdrop { display: none; }
@media (max-width: 820px) {
  .sidebar { display: none; }
  .main-content { padding: 20px 16px 110px; }
  .mobile-tabbar {
    display: flex; position: fixed; left: 0; right: 0; bottom: 0; z-index: 60;
    padding: 8px 10px calc(8px + env(safe-area-inset-bottom, 0px));
    background: rgba(255,255,255,.96); border-top: 1px solid var(--border);
    backdrop-filter: blur(14px); gap: 4px;
  }
  .tab-item { flex: 1; display: grid; grid-template-columns: 1fr; justify-items: center; gap: 2px; min-height: 52px; padding: 5px 2px; border: 0; border-radius: 12px; background: transparent; color: var(--text-2); cursor: pointer; }
  .tab-item > span { font-size: 19px; }
  .tab-item b { font-size: 10px; font-weight: 700; }
  .tab-item.active { background: var(--primary-soft); color: var(--primary-strong); }
  .tab-item.active > span { display: inline-block; animation: floaty 2.4s ease-in-out infinite; }
  .mobile-sheet-backdrop.open { display: block; position: fixed; inset: 0; z-index: 70; background: rgba(15,23,42,.42); backdrop-filter: blur(2px); }
  .mobile-sheet.open { display: block; position: fixed; left: 0; right: 0; bottom: 0; z-index: 80; background: var(--surface); border-radius: 20px 20px 0 0; border-top: 1px solid var(--border); padding: 10px 16px calc(18px + env(safe-area-inset-bottom, 0px)); animation: sheet-up .28s cubic-bezier(.34,1.56,.64,1) both; box-shadow: 0 -16px 44px rgba(16,24,40,.22); }
  .sheet-handle { width: 44px; height: 5px; margin: 2px auto 12px; border-radius: 999px; background: var(--border-strong); }
  .sheet-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 8px; }
  .sheet-item { display: grid; grid-template-columns: 1fr; justify-items: center; gap: 6px; padding: 14px 6px; border: 1px solid var(--border) !important; border-radius: 14px; background: var(--surface-soft) !important; color: var(--text) !important; min-height: 76px; }
  .sheet-item > span { font-size: 22px; }
  .sheet-item b { font-size: 11.5px; }
  .toast-stack { bottom: calc(84px + env(safe-area-inset-bottom, 0px)); }
}
@keyframes sheet-up { from { transform: translateY(40px); opacity: .4; } to { transform: none; opacity: 1; } }

@media (prefers-color-scheme: dark) {
  body[data-accent='pink'] { --primary: #f28bab; --primary-strong: #f5a3bc; --primary-soft: rgba(236,93,138,.16); }
  body[data-accent='orange'] { --primary: #f2a06b; --primary-strong: #f5b184; --primary-soft: rgba(238,122,58,.16); }
  body[data-accent='purple'] { --primary: #a68ee4; --primary-strong: #b7a4ea; --primary-soft: rgba(139,111,216,.16); }
  .mobile-tabbar { background: rgba(32,33,36,.96); }
}

/* ---------- v4.2: biểu đồ tròn, tag học sinh, đăng nhập & tuỳ chỉnh ---------- */
.kpi.clickable { cursor: pointer; }
.kpi.clickable:hover { transform: translateY(-3px); box-shadow: 0 10px 24px rgba(197,48,49,.12); }

.chart-duo { display: grid; grid-template-columns: repeat(auto-fit, minmax(230px, 1fr)); gap: 18px; }
.chart-box { display: grid; justify-items: center; gap: 10px; align-content: start; }
.chart-title { font-size: 11.5px; font-weight: 750; color: var(--text-2); text-transform: uppercase; letter-spacing: .5px; }
.donut-wrap svg { display: block; max-width: 100%; height: auto; }
.donut-center-top { font-size: 16px; font-weight: 800; fill: var(--text); font-family: inherit; }
.donut-center-bottom { font-size: 9px; font-weight: 700; fill: var(--text-2); text-transform: uppercase; letter-spacing: .7px; font-family: inherit; }
.donut-legend { display: grid; gap: 6px; width: 100%; }
.legend-row { display: flex; align-items: center; gap: 7px; font-size: 11.5px; }
.legend-row .legend-name { min-width: 0; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; flex: 1; }
.legend-row b { font-variant-numeric: tabular-nums; }
.chart-card { margin-bottom: 16px; }

.class-rows { display: grid; gap: 12px; }
.class-row { display: flex; flex-wrap: wrap; align-items: flex-start; gap: 10px; padding-bottom: 12px; border-bottom: 1px dashed var(--border); }
.class-row:last-child { border-bottom: 0; padding-bottom: 0; }
.class-row > .class-chip { flex: none; }
.class-chip.chip-static { cursor: default; }
.student-tags { display: flex; flex-wrap: wrap; gap: 6px; flex: 1; min-width: 200px; }
.student-tag { display: inline-flex; align-items: center; gap: 6px; min-height: 30px; padding: 3px 10px 3px 4px; border: 1px solid var(--border); border-radius: 999px; background: var(--surface); font-size: 12px; font-weight: 650; color: var(--text); cursor: pointer; transition: border-color .15s, background .15s, transform .12s cubic-bezier(.34,1.56,.64,1); }
.student-tag:hover { border-color: var(--primary); background: var(--primary-soft); transform: translateY(-1px); }
.avatar.xs { width: 22px; height: 22px; font-size: 9px; border-radius: 50%; flex: none; }

.rev-toolbar { display: flex; flex-wrap: wrap; align-items: center; gap: 10px; margin-bottom: 14px; }
.month-mini { display: inline-flex; align-items: center; gap: 2px; background: var(--surface); border: 1px solid var(--border); border-radius: 999px; padding: 3px; box-shadow: var(--shadow); }
.month-mini select { min-height: 30px; min-width: 0; width: auto; padding: 3px 5px; border: 0; background: transparent; font-weight: 750; font-size: 12.5px; color: var(--text); }
.mini-nav { width: 28px; height: 28px; display: grid; place-items: center; border: 0; border-radius: 50%; background: transparent; color: var(--text-2); cursor: pointer; font-size: 16px; }
.mini-nav:hover { background: var(--surface-soft); color: var(--primary-strong); }
.rev-chips .filter-chip { min-height: 30px; padding: 3px 10px; font-size: 11.5px; }
.rev-note { margin-left: auto; }

.color-row { display: flex; align-items: center; gap: 8px; }
input[type='color'] { padding: 3px; min-height: 40px; width: 64px; cursor: pointer; }

.auth-screen { position: fixed; inset: 0; z-index: 200; display: grid; place-items: center; padding: 20px; background: var(--canvas); overflow: auto; }
.auth-screen[hidden] { display: none; }
body.locked .app-shell, body.locked .mobile-tabbar { display: none; }
.auth-card { width: min(400px, 100%); padding: 28px 26px; display: grid; gap: 12px; border-radius: 20px; }
.auth-card .panda-logo { margin: 0 auto; }
.auth-card h1 { margin: 0; font-size: 24px; text-align: center; letter-spacing: -.4px; }
.auth-card .auth-sub { text-align: center; margin: 0; color: var(--text-2); font-size: 13px; }
.auth-tabs { display: grid; grid-template-columns: 1fr 1fr; gap: 4px; padding: 4px; background: var(--surface-soft); border-radius: 12px; }
.auth-tabs button { min-height: 38px; border: 0; border-radius: 9px; background: transparent; font-weight: 700; color: var(--text-2); cursor: pointer; font-size: 13px; }
.auth-tabs button.active { background: var(--surface); color: var(--primary-strong); box-shadow: 0 2px 8px rgba(16,24,40,.08); }
.auth-error { padding: 10px 12px; border-radius: 9px; background: var(--red-soft); color: var(--red); font-size: 12.5px; font-weight: 650; }
.auth-note { text-align: center; }
.auth-users { display: flex; flex-wrap: wrap; gap: 6px; justify-content: center; align-items: center; }
#authSubmit { width: 100%; }

.user-chip { display: inline-flex; align-items: center; gap: 7px; min-height: 34px; padding: 3px 11px 3px 4px; border: 1px solid var(--border); border-radius: 999px; background: var(--surface); font-size: 12px; font-weight: 700; color: var(--text); cursor: pointer; transition: background .15s, transform .12s; }
.user-chip:hover { background: var(--surface-soft); transform: translateY(-1px); }

@media (max-width: 560px) {
  .kpi { min-height: 0; padding: 12px 14px; }
  .kpi-top { font-size: 11px; }
  .kpi-value { font-size: 19px; margin-top: 8px; }
  .kpi-meta { font-size: 10.5px; }
  .chart-duo { grid-template-columns: 1fr; }
  .donut-wrap svg { width: 150px; height: 150px; }
  .user-chip { padding-right: 4px; }
  .user-chip #userChipName { display: none; }
  .rev-note { margin-left: 0; width: 100%; }
}

/* ---------- v5: icon sidebar, calendar, charts, tuition form, theme studio ---------- */
:root { --sidebar: 72px; --sidebar-expanded: 248px; --icon: var(--text-2); --topbar-bg: rgba(255,255,255,.94); --nav-active: var(--primary-soft); }
.sidebar-toggle {
  width: 40px; height: 40px; margin: 0 0 10px 8px; border: 0; border-radius: 10px;
  display: grid; place-items: center; background: transparent; color: var(--icon); cursor: pointer;
}
.sidebar-toggle:hover { background: var(--surface-soft); color: var(--text); }
body.sidebar-collapsed { --sidebar: 72px; }
body.sidebar-expanded { --sidebar: var(--sidebar-expanded); }
.sidebar { width: var(--sidebar); transition: width .2s ease; overflow-x: hidden; }
.sidebar nav { display: grid; gap: 2px; }
.sidebar .nav-item {
  grid-template-columns: 40px minmax(0,1fr) auto;
  padding: 0 8px; min-height: 44px; color: var(--icon);
}
.nav-ico { width: 40px; height: 40px; display: grid; place-items: center; }
.nav-ico svg { width: 20px; height: 20px; stroke: currentColor; fill: none; stroke-width: 1.8; stroke-linecap: round; stroke-linejoin: round; }
.sidebar .nav-item b, .sidebar .nav-item em, .nav-caret, .sidebar-foot span:last-child { opacity: 0; width: 0; overflow: hidden; white-space: nowrap; pointer-events: none; }
body.sidebar-expanded .sidebar .nav-item b,
body.sidebar-expanded .sidebar .nav-item em,
body.sidebar-expanded .nav-caret,
body.sidebar-expanded .sidebar-foot span:last-child { opacity: 1; width: auto; pointer-events: auto; }
body.sidebar-collapsed .sidebar .nav-item { grid-template-columns: 40px; justify-items: center; padding: 0; }
body.sidebar-collapsed .sidebar .nav-item b,
body.sidebar-collapsed .sidebar .nav-item em,
body.sidebar-collapsed .nav-caret { display: none; }
body.sidebar-collapsed .nav-children { display: none !important; }
body.sidebar-collapsed .sidebar-foot span:last-child { display: none; }
.nav-group { display: grid; gap: 2px; }
.nav-parent { position: relative; }
.nav-caret { font-style: normal; font-size: 11px; opacity: .7; }
.nav-group.open .nav-caret { transform: rotate(180deg); }
.nav-children { display: none; padding-left: 12px; gap: 2px; }
body.sidebar-expanded .nav-group.open .nav-children { display: grid; }
.nav-children .nav-item { min-height: 38px; }
.nav-item.active { background: var(--nav-active); color: var(--primary-strong); }
.topbar { background: var(--topbar-bg); }
.device-badge {
  width: 34px; height: 34px; padding: 0; display: inline-grid; place-items: center;
  border: 1px solid var(--border); border-radius: 10px; background: var(--surface); font-size: 16px;
}
.device-badge span { display: none !important; }
.save-indicator {
  width: 34px; height: 34px; padding: 0; display: inline-grid; place-items: center;
  border: 1px solid var(--border); border-radius: 10px; background: var(--surface);
}
.save-indicator .save-dot { width: 10px; height: 10px; background: var(--green); box-shadow: 0 0 0 4px var(--green-soft); }
.save-indicator.saving .save-dot { background: var(--orange); box-shadow: 0 0 0 4px var(--orange-soft); animation: pulse 1s infinite; }
.save-indicator.error .save-dot { background: var(--red); box-shadow: 0 0 0 4px var(--red-soft); }
.save-indicator.unsaved .save-dot { background: var(--red); box-shadow: 0 0 0 4px var(--red-soft); }

.kpi-grid.dash-kpis { grid-template-columns: repeat(3, minmax(0,1fr)); }
.kpi-grid-3 { grid-template-columns: repeat(3, minmax(0, 1fr)); }
.chart-split, .bar-charts { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; margin-bottom: 16px; }
.chart-split .chart-box { width: 100%; justify-items: stretch; }
.chart-split .bar-chart { width: 100%; }
.bar-chart { display: flex; align-items: flex-end; gap: 8px; min-height: 220px; padding: 8px 4px 0; }
.bar-col { flex: 1; min-width: 0; display: flex; flex-direction: column; align-items: center; justify-content: flex-end; gap: 6px; height: 200px; }
.bar-val { font-size: 10px; color: var(--text-2); font-weight: 700; text-align: center; line-height: 1.2; min-height: 24px; }
.bar {
  width: 100%; max-width: 36px; border-radius: 8px 8px 4px 4px; min-height: 4px;
  background: var(--primary); transition: height .25s ease;
}
.bar-label { font-size: 11px; color: var(--text-2); font-weight: 650; text-align: center; }

.cal-toolbar { display: flex; flex-wrap: wrap; align-items: center; justify-content: space-between; gap: 12px; margin-bottom: 16px; }
.cal-nav { display: flex; align-items: center; gap: 8px; }
.cal-range { font-weight: 750; color: var(--primary-strong); }
.cal-stats { display: grid; grid-template-columns: repeat(4, minmax(0,1fr)); gap: 10px; margin-bottom: 14px; }
.cal-stat { padding: 12px; border: 1px solid var(--border); border-radius: 12px; background: var(--surface); text-align: center; }
.cal-stat span { display: block; color: var(--text-2); font-size: 11px; font-weight: 700; letter-spacing: .4px; text-transform: uppercase; }
.cal-stat b { display: block; margin-top: 4px; font-size: 20px; color: var(--primary-strong); }
.cal-week {
  display: grid; grid-template-columns: 56px repeat(7, minmax(0,1fr));
  border: 1px solid var(--border); border-radius: 14px; overflow: hidden; background: var(--surface);
}
.cal-head, .cal-time, .cal-cell { border-right: 1px solid var(--border); border-bottom: 1px solid var(--border); }
.cal-head { padding: 10px 8px; text-align: center; background: var(--surface-soft); font-size: 12px; font-weight: 750; }
.cal-head.today { background: var(--primary-soft); color: var(--primary-strong); }
.cal-time { padding: 0 6px; color: var(--text-3); font-size: 11px; height: 52px; display: flex; align-items: flex-start; justify-content: flex-end; }
.cal-cell { position: relative; height: 52px; background-image: linear-gradient(to bottom, transparent 50%, rgba(0,0,0,.03) 50%); background-size: 100% 52px; }
.cal-event {
  position: absolute; left: 4px; right: 4px; border-radius: 8px; padding: 6px 8px; color: #2c2c2b;
  font-size: 11.5px; line-height: 1.25; overflow: hidden; cursor: pointer; box-shadow: 0 1px 2px rgba(0,0,0,.06);
}
.cal-event b { display: block; font-size: 11px; }
.cal-event small { opacity: .85; }
.cal-month-grid { display: grid; grid-template-columns: repeat(7, 1fr); gap: 6px; }
.cal-month-day { min-height: 92px; padding: 8px; border: 1px solid var(--border); border-radius: 10px; background: var(--surface); }
.cal-month-day.today { border-color: var(--primary); background: var(--primary-soft); }
.cal-chip { display: block; margin-top: 4px; padding: 3px 6px; border-radius: 6px; font-size: 11px; overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }

.pay-tag {
  min-height: 32px; padding: 4px 10px; border-radius: 999px; border: 1px solid var(--border-strong);
  background: var(--surface); color: var(--text-2); font-size: 12px; font-weight: 750; cursor: pointer;
}
.pay-tag.paid { background: var(--green-soft); color: var(--green); border-color: transparent; }
.pay-tag.unpaid { background: var(--orange-soft); color: var(--orange); border-color: transparent; }
.accordion-head {
  width: 100%; display: flex; align-items: center; justify-content: space-between; gap: 12px;
  padding: 16px 20px; border: 0; background: transparent; cursor: pointer; text-align: left;
}
.accordion-head h2 { margin: 0; font-size: 16px; }
.accordion-body { display: none; }
.accordion.open .accordion-body { display: block; }
.accordion-caret { color: var(--text-3); }

.theme-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); gap: 12px; }
.theme-swatch { display: flex; align-items: center; justify-content: space-between; gap: 10px; padding: 12px; border: 1px solid var(--border); border-radius: 12px; background: var(--surface); }
.theme-swatch input[type=color] { width: 42px; height: 34px; padding: 0; border: 0; background: transparent; cursor: pointer; }

.slip {
  width: 720px; margin: 0 auto; padding: 28px 32px 22px; border-radius: 18px;
  background: color-mix(in srgb, var(--primary) 8%, white); color: var(--primary-strong);
  border: 1px solid color-mix(in srgb, var(--primary) 18%, white); font-size: 13.5px;
}
.slip-top { display: flex; justify-content: space-between; font-size: 12.5px; margin-bottom: 8px; }
.slip h1 { margin: 0 0 16px; text-align: center; font-size: 28px; letter-spacing: .4px; color: var(--primary-strong); }
.slip-grid { display: grid; grid-template-columns: 1.15fr .85fr; gap: 14px; }
.slip-box { border: 1.5px solid color-mix(in srgb, var(--primary) 35%, white); border-radius: 16px; padding: 14px 16px; background: #fff; }
.slip-box h3 { margin: 0 0 10px; font-size: 13px; letter-spacing: .4px; }
.slip-row { display: grid; grid-template-columns: 92px 1fr; gap: 8px; padding: 6px 0; border-bottom: 1px dashed color-mix(in srgb, var(--primary) 22%, white); }
.slip-row:last-of-type { border-bottom: 0; }
.slip-dates { display: flex; flex-wrap: wrap; gap: 6px; margin-top: 8px; }
.slip-date { min-width: 52px; padding: 6px 0; text-align: center; border-radius: 999px; background: color-mix(in srgb, var(--primary) 10%, white); font-weight: 700; font-size: 12px; }
.slip-total { text-align: center; }
.slip-total .amount { margin: 4px 0 10px; font-size: 26px; font-weight: 850; }
.slip-qr { width: 148px; height: 148px; margin: 0 auto 10px; border-radius: 8px; background: #fff; object-fit: contain; border: 1px solid var(--border); }
.slip-qr-ph { width: 148px; height: 148px; margin: 0 auto 10px; display: grid; place-items: center; border: 1px dashed var(--border-strong); border-radius: 8px; color: var(--text-3); font-size: 12px; text-align: center; }
.slip-bank { text-align: center; font-size: 12.5px; line-height: 1.45; }
.slip-section { margin-top: 18px; }
.slip-section h3 { margin: 0 0 8px; font-size: 14px; }
.slip-section p { margin: 0 0 6px; color: var(--text); }
.slip-bottom { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; margin-top: 16px; }
.slip-foot { margin-top: 16px; text-align: center; padding: 8px 12px; border-radius: 999px; background: #fff; font-size: 12px; }
.tuition-editor-grid { display: grid; grid-template-columns: 280px minmax(0,1fr); gap: 16px; }
.tuition-preview-wrap { overflow: auto; max-height: 68vh; background: var(--canvas); padding: 12px; border-radius: 12px; }
.dialog.extra-wide { width: min(1100px, calc(100vw - 24px)); }
.export-thumbs { display: grid; grid-template-columns: repeat(auto-fill, minmax(120px, 1fr)); gap: 8px; margin-top: 10px; }
.export-thumbs img { width: 100%; border-radius: 8px; border: 1px solid var(--border); }
.pay-history { display: grid; gap: 6px; margin-top: 10px; }
.pay-history li { display: flex; justify-content: space-between; gap: 8px; font-size: 12.5px; }
.qr-preview { width: 120px; height: 120px; object-fit: contain; border: 1px solid var(--border); border-radius: 8px; background: #fff; }

@media (max-width: 1080px) {
  .bar-charts, .chart-split, .slip-grid, .tuition-editor-grid, .cal-stats, .kpi-grid-3 { grid-template-columns: 1fr; }
  .slip { width: 100%; }
}
@media (max-width: 820px) {
  .sidebar { display: none; }
  .kpi-grid.dash-kpis { grid-template-columns: 1fr; }
  .cal-week { min-width: 720px; }
}

/* Update 0-3 · stable navigation, live studio, student calendar */
:root { --app-font: Helvetica, Arial, sans-serif; }
body,button,input,select,textarea,table,code,.mono,.slip { font-family:var(--app-font) !important; }
[hidden] { display:none !important; }
button { touch-action:manipulation; }
button, .nav-item, .nav-ico, .tab-item { transition:background-color .14s ease,color .14s ease,border-color .14s ease !important; }
.nav-item,.nav-item:hover,.nav-item:active,.nav-item.active,.nav-item.active > span,.tab-item,.tab-item span,.nav-ico { transform:none !important; animation:none !important; }
.sidebar { height:calc(100dvh - 72px); display:flex; flex-direction:column; justify-content:flex-start; overflow:hidden; padding:14px 10px; }
.sidebar nav { flex:1; min-height:0; display:flex; flex-direction:column; justify-content:flex-start; gap:4px; overflow-y:auto; overflow-x:hidden; overscroll-behavior:contain; scrollbar-width:thin; }
.sidebar-toggle { flex-shrink:0; align-self:center; font-size:26px; line-height:1; display:grid; place-items:center; height:42px; width:42px; margin:0 0 12px; }
.nav-item { flex-shrink:0; }
.sidebar .nav-item { display:flex !important; align-items:center; justify-content:flex-start; gap:10px; padding:4px 6px; min-height:44px; width:100%; }
.sidebar-collapsed .sidebar .nav-item { justify-content:center; padding:0; }
.nav-ico,.nav-item.active>.nav-ico { display:grid !important; place-items:center; width:36px; height:36px; flex:0 0 36px; }
.nav-ico svg { display:block; width:20px; height:20px; }
.sidebar .nav-item b { font-weight:600; }
.sidebar .nav-parent .nav-caret { margin-left:auto; }
.sidebar-foot { flex-shrink:0; padding:8px; }
.nav-children { padding-left:0; margin:4px 0 8px; border-left:2px solid var(--border); }
.nav-children .nav-item { padding-left:12px; }
.sheet-item b { opacity:1!important;width:auto!important;display:block!important; }
.mobile-sheet { max-height:75dvh; overflow-y:auto; overscroll-behavior:contain; }
.mobile-tabbar .nav-item { display:flex!important; flex-direction:column; align-items:center; padding:0!important; gap:0; }
.mobile-tabbar .nav-ico { width:30px;height:30px;flex-basis:30px; }
.mobile-tabbar button { min-height:44px; }
.brand-block { cursor:pointer; }
.brand-mark.has-teacher-photo { padding:0; background:none; }
.brand-mark img { width:42px;height:42px;object-fit:cover;border-radius:50%; }
.student-name-button { display:inline-block; margin-right:8px; }
.teacher-profile { max-width:900px;overflow:hidden; }
.teacher-banner { background:var(--primary-soft); min-height:130px; padding:28px; text-align:right; color:var(--primary-strong); }
.teacher-profile-body { padding:28px;display:grid;gap:20px; }
.teacher-avatar { width:104px;height:104px;border-radius:50%;background:var(--surface);border:5px solid var(--surface);color:var(--primary);font-size:60px;display:grid;place-items:center;margin-top:-80px; }
.teacher-avatar img { width:100%;height:100%;object-fit:cover;border-radius:50%; }
.preset-grid { display:grid;grid-template-columns:repeat(5,minmax(0,1fr));gap:14px;margin:20px 0 28px; }
.preset-card { border:1px solid var(--border);border-radius:16px;background:var(--canvas);padding:14px;text-align:left;min-height:98px;cursor:pointer; }
.preset-card:hover,.preset-card.selected { border-color:var(--primary);box-shadow:0 0 0 2px var(--primary-soft); }
.preset-colors { display:flex;gap:6px;margin-bottom:12px; }
.preset-colors i { width:24px;height:24px;border-radius:50%;border:1px solid rgba(0,0,0,.08); }
.theme-font-row { display:grid;grid-template-columns:1fr 1fr;gap:24px;align-items:center;margin:24px 0; }
.font-sample { font-size:22px;color:var(--primary-strong); }
.font-sample small { display:block;font-size:14px;color:var(--text-2); }
.color-details { border-top:1px solid var(--border);padding-top:18px;margin-bottom:20px; }
summary { cursor:pointer;min-height:44px;padding:8px 0;font-weight:600; }
.calendar-scroll { overflow:auto;max-height:70dvh;overscroll-behavior:contain;scrollbar-width:thin;border:1px solid var(--border);border-radius:14px;background:var(--surface); }
.calendar-week-v6 { min-width:980px;display:grid;grid-template-columns:58px repeat(7,minmax(0,1fr)); }
.calendar-week-v6 .cal-head { height:52px;position:sticky;top:0;z-index:5;background:var(--surface);font-size:12px; }
.calendar-week-v6 .cal-head.today { background:var(--primary-soft);color:var(--primary-strong); }
.calendar-day-col { border-right:1px solid var(--border);min-width:0; }
.day-lanes { height:1134px;position:relative; }
.hour-slot { display:block;width:100%;height:63px;border:0;border-bottom:1px solid var(--border);background:transparent;cursor:pointer;border-radius:0; }
.hour-slot:hover { background:var(--primary-soft); }
.hour-label { height:63px;color:var(--text-2);font-size:11px;text-align:right;padding:4px 8px; }
.cal-event-v6 { position:absolute;z-index:2;background:var(--event-color);border:0;border-left:3px solid rgba(0,0,0,.18);border-radius:7px;padding:7px;text-align:left;color:#29322c;overflow:hidden;cursor:pointer;line-height:1.35; }
.cal-event-v6 b,.cal-event-v6 span,.cal-event-v6 small { display:block;font-size:11px; }
.cal-event-v6:hover { outline:2px solid var(--primary); }
.cal-month-grid { min-width:800px;background:var(--surface); }
.cal-month-day .cal-event-v6 { position:static;width:100%;margin-top:4px; }
.day-number { background:none;border:0;cursor:pointer;min-height:32px; }
.cal-toolbar { align-items:end;gap:18px; }
.cal-toolbar>.field { min-width:210px; }
.journal-title { background:var(--primary);color:white;padding:20px 24px;display:flex;justify-content:space-between;gap:16px; }
.journal-card { overflow:hidden; }
.table-scroll { overflow:auto;overscroll-behavior:contain; }
.lesson-table { width:100%;min-width:850px;border-collapse:collapse;font-size:13px; }
.lesson-table th { background:var(--primary-soft);padding:13px 10px;text-align:left; }
.lesson-table td { padding:18px 10px;border:1px solid var(--border);vertical-align:top;white-space:pre-wrap; }
.lesson-table tr { cursor:pointer; }
.lesson-table tr:hover { background:var(--canvas); }
.lesson-table td:nth-child(3){width:28%;}.lesson-table td:nth-child(6){width:25%;}
.homework { color:var(--primary-strong); }.progress-tag { background:var(--primary-soft);padding:4px 8px;border-radius:6px; }
.dialog { max-height:92dvh;overflow:auto;overscroll-behavior:contain; }
.dialog::backdrop { background:rgba(25,28,30,.4);backdrop-filter:blur(3px); }
.dialog-head { align-items:center; }
.dialog-head h2 { margin:0; }
#eventDialog { width:min(740px,calc(100vw - 32px)); }
#eventDialog .dialog-actions { position:sticky;bottom:-20px;background:var(--surface);padding:16px 0;margin:12px 0 0; }
#tuitionDialog { width:min(1380px,calc(100vw - 32px)); max-width:none; padding:0; overflow:hidden; }
.tuition-dialog-card { display:flex;flex-direction:column;max-height:92dvh;padding:0; }
.tuition-dialog-card>.dialog-head { padding:18px 24px;border-bottom:1px solid var(--border);flex-shrink:0; }
.tuition-editor-grid { display:grid;grid-template-columns:minmax(280px,.8fr) minmax(450px,1.2fr);gap:0;min-height:0;overflow:hidden; }
.tuition-fields { overflow:auto;padding:20px;max-height:none;overscroll-behavior:contain;display:block; }
.slip-preview-area { background:var(--canvas);overflow:auto;padding:20px;overscroll-behavior:contain; }
.preview-caption { display:flex;justify-content:space-between;gap:12px;margin-bottom:14px;font-size:13px;color:var(--text-2); }
.tuition-preview-wrap { padding:0;background:none;overflow:visible; }
.tuition-dialog-card>.dialog-actions { padding:16px 24px;border-top:1px solid var(--border);flex-shrink:0;margin:0;gap:10px;background:var(--surface); }
.tuition-dialog-card>.dialog-actions>span { margin-right:auto; }
.slip-options { display:grid;grid-template-columns:1fr 1fr;gap:8px;margin:16px 0; }
.visibility-tile { border:1px solid var(--border);border-radius:12px;background:var(--canvas);padding:12px;display:flex;align-items:center;justify-content:space-between;gap:8px;font-size:13px;min-height:50px; }
.visibility-tile input { accent-color:var(--primary);width:18px;height:18px; }
.v6-slip { width:100%;min-width:0;padding:26px;background:var(--surface);color:var(--text);font-size:14px;border-radius:14px;box-shadow:0 2px 14px #00000008; }
.v6-slip h1 { font-size:24px;line-height:1.3;color:var(--primary-strong);white-space:pre-wrap; }
.v6-slip h3 { font-size:14px;line-height:1.4;color:var(--primary-strong);margin:0 0 12px; }
.v6-slip .slip-grid { grid-template-columns:1.1fr 1fr;gap:14px; }
.v6-slip .slip-box { padding:16px;border:1px solid var(--border);border-radius:12px; }
.v6-slip .slip-row { font-size:13px;gap:8px; }
.v6-slip .slip-row b { text-align:right; }
.v6-slip .amount { font-size:26px;color:var(--text); }
.v6-slip .slip-bank { font-size:12px;line-height:1.6;overflow-wrap:anywhere; }
.v6-slip p { margin:8px 0;white-space:pre-wrap; }
.v6-slip .slip-section { margin:16px 0;padding-top:16px;border-top:1px solid var(--border); }
.v6-slip .slip-qr { width:110px;height:110px;object-fit:contain; }
.v6-slip .slip-date { background:var(--primary-soft);color:var(--primary-strong); }
.v6-slip .slip-top { gap:12px;font-size:13px; }
.v6-slip .slip-foot { background:var(--canvas);border-radius:8px;padding:12px;white-space:pre-wrap;font-size:12px; }
[contenteditable] { min-height:1.35em;overflow-wrap:anywhere; }
[contenteditable]:hover { outline:1px dashed var(--primary);outline-offset:3px; }
[contenteditable]:focus { outline:2px solid var(--primary);outline-offset:3px; }
.no-effects *, .no-effects *::before,.no-effects *::after { animation:none!important;transition:none!important; }
@media(prefers-reduced-motion:reduce){*,*::before,*::after{animation:none!important;transition:none!important;scroll-behavior:auto!important;}}
@media(max-width:1100px){.preset-grid{grid-template-columns:repeat(3,minmax(0,1fr));}.tuition-editor-grid{grid-template-columns:minmax(250px,.7fr) minmax(430px,1.3fr);}.cal-toolbar{flex-wrap:wrap;}}
@media(max-width:820px){.sidebar{display:none!important;}.workspace{display:block;}.preset-grid{grid-template-columns:repeat(2,minmax(0,1fr));}.theme-font-row{grid-template-columns:1fr;}.cal-toolbar{display:block;}.cal-toolbar>.field{margin-top:16px;}.cal-nav{flex-wrap:wrap;}.cal-stats{grid-template-columns:1fr 1fr;}.journal-title{display:block;}.journal-title span{display:block;}.teacher-profile-body{padding:20px;}.teacher-banner{font-size:13px;padding:20px;}.teacher-avatar{margin-top:-65px;}.dialog-actions{flex-wrap:wrap;}.tuition-editor-grid{display:block;overflow:auto;}.tuition-fields,.slip-preview-area{overflow:visible;padding:16px;}.tuition-dialog-card>.dialog-head,.tuition-dialog-card>.dialog-actions{padding:12px 16px;}.tuition-dialog-card>.dialog-actions>span{width:100%;font-size:11px;}#tuitionDialog{width:calc(100vw - 16px);}.v6-slip{padding:18px;font-size:13px;}.v6-slip .slip-grid{grid-template-columns:1fr;}.v6-slip h1{font-size:22px;}.cal-nav>b{width:100%;margin-top:8px;}.watchlist-item{grid-template-columns:34px minmax(0,1fr) auto;}.watchlist-item>button{grid-column:2/4;justify-self:start;}.form-grid{grid-template-columns:1fr!important;}.form-grid>.full{grid-column:auto;}.student-toolbar{flex-wrap:wrap;}.page-actions{flex-wrap:wrap;}.sheet-grid .nav-item{min-height:70px;}.teacher-banner span{display:block;margin-left:90px;}}

#viewAppearance .effects-check {display:flex;align-items:center;gap:10px;width:auto;min-height:44px;padding:8px 0;border:0;}
#viewAppearance .effects-check input{width:18px;height:18px;min-height:0;padding:0;accent-color:var(--primary);}
.nav-caret{font-size:0!important;}.nav-caret::after{content:'›';font-size:18px;}.nav-group.open .nav-caret::after{content:'⌄';}

.nav-group.open .nav-caret::after{content:'>';display:inline-block;transform:rotate(90deg);font-family:Arial,sans-serif;}

.dialog[open] .dialog-card {animation:none!important;opacity:1!important;transform:none!important;}
.view.active{animation:none!important;opacity:1!important;transform:none!important;}
#tuitionDialog .dialog-card {background:var(--surface);}
.toast-stack{max-height:150px;overflow:hidden;pointer-events:none;}

.save-indicator .save-dot{display:block!important;flex-shrink:0;}
.nav-group .nav-caret{transform:none!important;}.nav-group .nav-caret::after{content:">";}