:root {
  --ink: #17212b;
  --muted: #65717e;
  --line: #d8e0e7;
  --paper: #f6f8fb;
  --surface: #ffffff;
  --accent: #0f8b8d;
  --accent-2: #f25c54;
  --accent-3: #f7b801;
  --good: #2b9348;
  --shadow: 0 18px 50px rgba(23, 33, 43, .10);
}

* { box-sizing: border-box; }
body {
  margin: 0;
  color: var(--ink);
  background:
    linear-gradient(120deg, rgba(15,139,141,.14), transparent 34%),
    linear-gradient(210deg, rgba(242,92,84,.12), transparent 38%),
    var(--paper);
  font-family: "Segoe UI", Arial, sans-serif;
}

.topbar {
  display: flex;
  justify-content: space-between;
  gap: 24px;
  align-items: center;
  padding: 28px clamp(18px, 4vw, 48px) 18px;
}

.subtitle {
  margin: 8px 0 0;
  max-width: 760px;
  color: var(--muted);
  font-size: 15px;
  line-height: 1.5;
}

.eyebrow {
  margin: 0 0 5px;
  color: var(--accent);
  font-weight: 800;
  text-transform: uppercase;
  font-size: 12px;
}

h1, h2 { margin: 0; letter-spacing: 0; }
h1 { font-size: clamp(30px, 4vw, 48px); }
h2 { font-size: 20px; }

.status-pill {
  background: var(--ink);
  color: white;
  border-radius: 999px;
  padding: 12px 18px;
  font-weight: 800;
  white-space: nowrap;
}

.status-pill.subtle {
  background: #e8eef2;
  color: var(--ink);
}

.header-actions {
  display: flex;
  flex-direction: column;
  gap: 10px;
  align-items: flex-end;
}

.phone-pill {
  background: white;
  border: 1px solid var(--line);
  border-radius: 999px;
  padding: 10px 15px;
  color: var(--muted);
  font-weight: 800;
  white-space: nowrap;
}

.tabs {
  display: flex;
  gap: 12px;
  padding: 0 clamp(18px, 4vw, 48px) 22px;
  overflow-x: auto;
}

.tab {
  border: 1px solid rgba(255,255,255,.88);
  background: linear-gradient(180deg, #ffffff, #e9f1f4);
  color: #28424f;
  border-radius: 8px;
  padding: 16px 22px;
  min-width: 142px;
  font-size: 15px;
  font-weight: 900;
  cursor: pointer;
  box-shadow: 0 10px 20px rgba(23,33,43,.10), inset 0 1px 0 rgba(255,255,255,.9);
  transform: translateY(0);
  transition: transform .16s ease, box-shadow .16s ease, background .16s ease;
}

.tab:hover {
  transform: translateY(-2px);
  box-shadow: 0 14px 26px rgba(23,33,43,.14), inset 0 1px 0 rgba(255,255,255,.95);
}

.tab.active {
  background: linear-gradient(180deg, #11a1a3, var(--accent));
  border-color: var(--accent);
  color: white;
  box-shadow: 0 16px 28px rgba(15,139,141,.28), inset 0 1px 0 rgba(255,255,255,.28);
}

main { padding: 0 clamp(18px, 4vw, 48px) 42px; }
.panel { display: none; }
.panel.active { display: block; }

.metrics {
  display: grid;
  grid-template-columns: repeat(4, minmax(160px, 1fr));
  gap: 14px;
  margin-bottom: 16px;
}

.metric, .surface {
  background: rgba(255,255,255,.88);
  border: 1px solid rgba(216,224,231,.9);
  border-radius: 8px;
  box-shadow: var(--shadow);
}

.metric {
  padding: 18px;
  position: relative;
  overflow: hidden;
}

.metric::after {
  content: "";
  position: absolute;
  inset: auto 0 0;
  height: 5px;
  background: linear-gradient(90deg, var(--accent), var(--accent-2), var(--accent-3));
}

.metric span {
  display: block;
  color: var(--muted);
  font-weight: 700;
  font-size: 13px;
}

.metric strong {
  display: block;
  margin-top: 8px;
  font-size: 30px;
}

.dashboard-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.4fr) minmax(300px, .8fr);
  gap: 16px;
}

.chart-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 16px;
  margin-bottom: 16px;
}

.surface { padding: 18px; }

.section-title {
  display: flex;
  justify-content: space-between;
  gap: 16px;
  align-items: center;
  margin-bottom: 14px;
}

.page-title {
  background: rgba(255,255,255,.68);
  border: 1px solid rgba(216,224,231,.75);
  border-radius: 8px;
  padding: 14px 16px;
}

.section-title span, .lock {
  color: var(--muted);
  font-size: 13px;
  font-weight: 700;
}

.lock::before { content: "Controlled - "; color: var(--accent-2); }

.toolbar {
  display: flex;
  gap: 10px;
  align-items: center;
  flex-wrap: wrap;
  justify-content: flex-end;
}

.inline-control {
  display: flex;
  gap: 8px;
  align-items: center;
}

.compact-select {
  width: auto;
  min-width: 140px;
  margin: 0;
}

.bar-chart {
  display: grid;
  grid-template-columns: repeat(13, minmax(0, 1fr));
  gap: 6px;
  height: 230px;
  align-items: end;
  overflow: visible;
  padding: 22px 0 8px;
}

.bar {
  background: linear-gradient(180deg, var(--accent), #89c2c4);
  border-radius: 5px 5px 2px 2px;
  position: relative;
  min-height: 8px;
}

.enrolment-bar {
  background: linear-gradient(180deg, var(--accent-3), #f6d365);
}

.bar strong {
  display: none;
  position: absolute;
  top: -22px;
  left: 50%;
  transform: translateX(-50%);
  color: var(--ink);
  font-size: 10px;
  white-space: nowrap;
}

.bar span {
  position: absolute;
  bottom: -22px;
  left: 50%;
  transform: translateX(-50%);
  color: var(--muted);
  font-size: 11px;
  white-space: nowrap;
}

.mix-list {
  display: grid;
  gap: 12px;
}

.mix-item {
  display: grid;
  grid-template-columns: 110px 1fr 80px;
  gap: 10px;
  align-items: center;
}

.mix-track {
  height: 12px;
  background: #e9eef3;
  border-radius: 999px;
  overflow: hidden;
}

.mix-fill {
  height: 100%;
  background: var(--accent-2);
}

.unpaid-list {
  display: grid;
  gap: 10px;
  max-height: 320px;
  overflow: auto;
}

.unpaid-item {
  border: 1px solid rgba(193,18,31,.22);
  border-radius: 8px;
  padding: 10px 12px;
  background: rgba(193,18,31,.06);
}

.unpaid-item strong {
  display: block;
  color: #c1121f;
}

.unpaid-item span,
.empty-state {
  display: block;
  margin-top: 4px;
  color: var(--muted);
  font-size: 13px;
}

.split {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 16px;
}

.form-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
  align-self: start;
}

.form-grid.collapsed {
  display: none;
}

#studentForm:not(.collapsed) {
  position: fixed;
  right: clamp(14px, 4vw, 42px);
  top: 86px;
  z-index: 20;
  width: min(560px, calc(100vw - 28px));
  max-height: calc(100vh - 112px);
  overflow: auto;
}

.settings-form {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
}

.rate-form {
  display: grid;
  grid-template-columns: 1fr 1fr 130px 1.5fr auto;
  gap: 8px;
  margin-top: 14px;
  align-items: start;
}

.lower-grid {
  margin-top: 16px;
  grid-template-columns: 1fr;
}

.full { grid-column: 1 / -1; }
label { color: var(--muted); font-size: 12px; font-weight: 800; }

input, select, textarea {
  width: 100%;
  margin-top: 6px;
  border: 1px solid var(--line);
  border-radius: 7px;
  padding: 10px 11px;
  color: var(--ink);
  background: white;
  font: inherit;
}

.payment-input {
  min-width: 78px;
  margin: 0;
  padding: 7px 8px;
  text-align: right;
  border-color: transparent;
  background: #f7fafc;
}

.payment-input:focus {
  border-color: var(--accent);
  background: white;
  outline: 2px solid rgba(15,139,141,.15);
}

.payment-input.saving {
  background: #fff7dd;
}

.subject-choices {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 6px;
}

.check-pill {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  border: 1px solid var(--line);
  border-radius: 999px;
  padding: 8px 11px;
  background: #fbfdff;
  color: var(--ink);
}

.check-pill input {
  width: auto;
  margin: 0;
}

.batch-subject-select {
  min-width: 150px;
  height: 82px;
}

.overdue-name {
  color: #c1121f !important;
  font-weight: 900;
}

textarea { min-height: 78px; resize: vertical; }
.search { max-width: 260px; margin: 0; }

button {
  border: 0;
  background: var(--accent);
  color: white;
  border-radius: 7px;
  padding: 11px 15px;
  font-weight: 900;
  cursor: pointer;
}

button:disabled {
  cursor: not-allowed;
  opacity: .55;
}

button.ghost {
  background: #e8eef2;
  color: var(--ink);
}

.file-button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: auto;
  margin: 0;
  border-radius: 7px;
  padding: 11px 15px;
  background: var(--accent);
  color: white;
  font-size: 14px;
  font-weight: 900;
  cursor: pointer;
  white-space: nowrap;
}

.file-button input {
  display: none;
}

.ghost-file {
  background: #e8eef2;
  color: var(--ink);
}

.link-button {
  border: 0;
  background: transparent;
  color: var(--accent);
  padding: 0;
  font-weight: 900;
  text-align: left;
  cursor: pointer;
}

.actions {
  display: flex;
  gap: 10px;
  align-items: center;
  margin-top: 12px;
}

.table-wrap {
  overflow: auto;
  max-height: 62vh;
  border: 1px solid var(--line);
  border-radius: 8px;
}

.roster-table .table-wrap {
  max-height: none;
  overflow-x: auto;
  overflow-y: visible;
}

.wide { max-width: calc(100vw - 96px); }

table {
  width: 100%;
  border-collapse: collapse;
  font-size: 13px;
  background: white;
}

th, td {
  border-bottom: 1px solid var(--line);
  padding: 10px 11px;
  text-align: left;
  white-space: nowrap;
}

th {
  position: sticky;
  top: 0;
  z-index: 1;
  background: #edf5f5;
  color: #22434b;
  font-size: 12px;
}

tr:hover td { background: #fbfdff; }
.totals-row td {
  position: sticky;
  bottom: 0;
  background: #fff8df;
  color: #392c0a;
  font-weight: 900;
  z-index: 2;
}

.status-badge {
  display: inline-flex;
  min-width: 26px;
  justify-content: center;
  border-radius: 999px;
  padding: 3px 8px;
  font-weight: 900;
  font-size: 12px;
}

.status-badge.current {
  background: rgba(43,147,72,.12);
  color: var(--good);
}

.status-badge.inactive {
  background: rgba(242,92,84,.12);
  color: var(--accent-2);
}

.confidence {
  display: inline-flex;
  min-width: 70px;
  justify-content: center;
  border-radius: 999px;
  padding: 4px 9px;
  font-size: 12px;
  font-weight: 900;
  text-transform: capitalize;
}

.confidence.high {
  background: rgba(43,147,72,.12);
  color: var(--good);
}

.confidence.medium {
  background: rgba(247,184,1,.18);
  color: #8a6400;
}

.confidence.low {
  background: rgba(242,92,84,.12);
  color: var(--accent-2);
}

.recon-summary {
  margin-bottom: 16px;
}

.verify-action {
  min-width: 140px;
  padding: 8px 10px;
  font-size: 12px;
}

.verify-action.verified {
  background: var(--good);
}

.verify-action.needs-review {
  background: #c1121f;
}

.reconciliation-actions {
  justify-content: flex-end;
}

.metric.success::after { background: var(--good); }
.metric.warning::after { background: var(--accent-3); }
.metric.accent::after { background: var(--accent); }

.row-actions { display: flex; gap: 7px; }
.small { padding: 7px 9px; font-size: 12px; }
.danger { background: var(--accent-2); }

pre {
  margin: 0;
  white-space: pre-wrap;
  color: #33404c;
  line-height: 1.45;
}

.roadmap {
  display: grid;
  gap: 10px;
  color: #33404c;
}

.roadmap p {
  margin: 0;
  padding: 12px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #fbfdff;
}

.mini-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(120px, 1fr));
  gap: 10px;
  margin: 14px 0;
}

.info-tile {
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #fbfdff;
  padding: 12px;
}

.info-tile span {
  display: block;
  color: var(--muted);
  font-size: 12px;
  font-weight: 800;
}

.info-tile strong {
  display: block;
  margin-top: 5px;
}

.sub-title {
  margin-top: 18px;
}

.discount-form {
  display: grid;
  grid-template-columns: 1fr 1.4fr 100px 100px auto;
  gap: 8px;
  margin-top: 12px;
  align-items: start;
}

.role-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 10px;
  margin-bottom: 14px;
}

.role-grid div {
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 12px;
  background: #fbfdff;
}

.role-grid span {
  display: block;
  color: var(--muted);
  margin-top: 6px;
  line-height: 1.4;
}

.restore-panel {
  display: grid;
  grid-template-columns: 1fr 220px auto;
  gap: 10px;
  align-items: end;
  margin-bottom: 14px;
}

.restore-panel p {
  grid-column: 1 / -1;
  margin: 0;
  color: var(--muted);
}

.profile-panel {
  position: fixed;
  top: 0;
  right: 0;
  z-index: 30;
  width: min(430px, 100vw);
  height: 100vh;
  overflow: auto;
  background: white;
  border-left: 1px solid var(--line);
  box-shadow: -18px 0 44px rgba(23,33,43,.16);
  padding: 18px;
}

.profile-panel.collapsed {
  display: none;
}

.profile-summary {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 10px;
}

.profile-summary div,
.profile-block {
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 12px;
  background: #fbfdff;
}

.profile-summary span {
  display: block;
  color: var(--muted);
  font-size: 12px;
  font-weight: 800;
}

.profile-summary strong {
  display: block;
  margin-top: 4px;
}

.profile-block {
  margin-top: 12px;
}

.profile-block h3 {
  margin: 0 0 8px;
  font-size: 15px;
}

.profile-block p {
  margin: 0;
  color: #33404c;
  line-height: 1.45;
}

.timeline {
  display: flex;
  flex-wrap: wrap;
  gap: 6px;
}

.timeline span {
  border-radius: 999px;
  background: #edf2f6;
  color: var(--muted);
  padding: 5px 8px;
  font-size: 11px;
  font-weight: 800;
}

.timeline span.paid {
  background: rgba(43,147,72,.14);
  color: var(--good);
}

.modal-backdrop {
  position: fixed;
  inset: 0;
  z-index: 25;
  background: rgba(23,33,43,.34);
  display: grid;
  place-items: center;
  padding: 20px;
}

.modal-backdrop.collapsed {
  display: none;
}

.workflow-modal {
  width: min(620px, 100%);
}

.workflow-choices {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
}

.modify-search {
  margin-top: 14px;
}

.modify-search.collapsed {
  display: none;
}

.import-panel {
  margin-top: 16px;
}

.import-panel.collapsed {
  display: none;
}

.modify-results {
  display: grid;
  gap: 8px;
  margin-top: 10px;
}

.result-row {
  display: grid;
  gap: 4px;
  width: 100%;
  background: #fbfdff;
  color: var(--ink);
  border: 1px solid var(--line);
  text-align: left;
}

.result-row span,
.muted-note {
  color: var(--muted);
}

#toast {
  position: fixed;
  right: 18px;
  bottom: 18px;
  background: var(--ink);
  color: white;
  border-radius: 8px;
  padding: 12px 16px;
  opacity: 0;
  pointer-events: none;
  transform: translateY(8px);
  transition: .2s ease;
}

#toast.show {
  opacity: 1;
  transform: translateY(0);
}

@media (max-width: 980px) {
  .metrics, .dashboard-grid, .split { grid-template-columns: 1fr; }
  .topbar { align-items: flex-start; flex-direction: column; }
  .header-actions { align-items: flex-start; }
  .form-grid { grid-template-columns: 1fr; }
  .settings-form, .rate-form, .discount-form, .mini-grid, .role-grid, .restore-panel, .workflow-choices { grid-template-columns: 1fr; }
  .wide { max-width: calc(100vw - 36px); }
}