:root {
  --primary: #111827;
  --primary-container: #f4f5f7;
  --on-primary: #ffffff;
  --secondary: #8b1f1f;
  --accent: #8b1f1f;
  --accent-strong: #b82020;
  --surface: #ffffff;
  --surface-variant: #ffffff;
  --on-surface: #1c1c1e;
  --on-surface-variant: #4b5565;
  --outline: #dbe2ea;
  --shadow: rgba(15, 23, 42, 0.06);
  --radius: 14px;
  --radius-sm: 10px;
  --space-1: 4px;
  --space-2: 8px;
  --space-3: 12px;
  --space-4: 16px;
  --space-5: 20px;
  --space-6: 24px;
  --space-7: 32px;
  --space-8: 40px;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  min-height: 100vh;
  font-family: "Inter", "Open Sans", "Segoe UI", sans-serif;
  color: var(--on-surface);
  background: #f4f5f7;
}

h1,
h2,
h3,
h4,
h5,
h6 {
  font-family: "Montserrat", "Poppins", "Segoe UI", sans-serif;
}

header {
  padding: var(--space-4);
  border-bottom: 1px solid var(--outline);
  background: #ffffff;
}

.top-bar {
  display: flex;
  align-items: center;
  justify-content: flex-start;
  gap: var(--space-4);
  width: 100%;
  margin: 0 auto;
}


.brand {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  font-weight: 700;
  letter-spacing: 0;
  text-transform: none;
  font-family: "Montserrat", "Poppins", "Segoe UI", sans-serif;
}

.brand-mark {
  width: 44px;
  height: 44px;
  border-radius: 999px;
  background: #ffffff;
  border: 1px solid var(--outline);
  box-shadow: none;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
}

.brand-mark img {
  width: 70%;
  height: 70%;
  object-fit: contain;
}

main {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: var(--space-7);
  width: 100%;
  margin: 0 auto;
  padding: var(--space-7) var(--space-6) var(--space-8);
  align-items: stretch;
  animation: rise 0.5s ease-out;
}

main.dashboard-wide {
  grid-template-columns: 1fr;
  align-items: stretch;
}

main.dashboard-home {
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  align-items: stretch;
  grid-auto-flow: row dense;
}

.dashboard-admin-section {
  display: grid;
  gap: var(--space-5);
  grid-column: 1 / -1;
}

.dashboard-upcoming-lessons {
  grid-column: 1 / -1;
}

.dashboard-upcoming-list {
  display: grid;
  gap: var(--space-3);
}

.dashboard-upcoming-item {
  border: 1px solid var(--outline);
  border-radius: var(--radius-sm);
  padding: var(--space-3);
  background: var(--surface-soft);
  display: grid;
  gap: var(--space-1);
}

.dashboard-upcoming-item .title-row {
  display: flex;
  justify-content: space-between;
  gap: var(--space-3);
  align-items: center;
}

.dashboard-upcoming-item .title-row strong {
  font-size: 1.05rem;
}

.dashboard-upcoming-item .meta-row {
  color: var(--on-surface-variant);
  font-size: 0.95rem;
}

.lesson-pill {
  border: 1px solid var(--outline);
  border-radius: 999px;
  padding: 2px 10px;
  font-size: 0.78rem;
  font-weight: 700;
  white-space: nowrap;
}

.dashboard-admin-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: var(--space-6);
}

.system-settings-section.is-collapsed .detail-list {
  display: none;
}

.section-header h2 {
  margin: 0;
}

.section-header p {
  margin: var(--space-2) 0 0;
  color: var(--on-surface-variant);
}

.preformatted {
  white-space: pre-wrap;
  font-family: inherit;
  margin: 0;
}

.button.success {
  background: #1b8f3e;
  border-color: #1b8f3e;
  color: #ffffff;
}

.hero {
  max-width: 520px;
}

.eyebrow {
  font-size: 0.8rem;
  letter-spacing: 0.3em;
  text-transform: uppercase;
  color: var(--secondary);
  font-weight: 600;
}

.hero h1 {
  margin: var(--space-3) 0 var(--space-4);
  font-size: clamp(2rem, 3vw, 3rem);
  line-height: 1.15;
}

.hero p {
  margin: 0;
  color: var(--on-surface-variant);
  line-height: 1.7;
  font-size: 1rem;
}

.card {
  background: var(--surface);
  border-radius: var(--radius);
  padding: var(--space-6);
  box-shadow: 0 2px 10px var(--shadow);
  border: 1px solid var(--outline);
}

.card h2 {
  margin-top: 0;
  font-size: 1.4rem;
  font-family: "Montserrat", "Poppins", "Segoe UI", sans-serif;
}

.cta-row {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-3);
  margin-top: var(--space-5);
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 10px 16px;
  border-radius: 10px;
  font-weight: 600;
  border: 1px solid var(--outline);
  text-decoration: none;
  background: var(--surface-variant);
  color: var(--on-surface);
  transition: opacity 0.2s ease, background-color 0.2s ease;
}

.button.primary {
  background: var(--primary);
  color: var(--on-primary);
  border-color: var(--primary);
  box-shadow: none;
}

.button.success {
  background: #2f9e44;
  color: #ffffff;
  box-shadow: 0 12px 22px rgba(47, 158, 68, 0.28);
}

.button.accent {
  background: var(--primary);
  color: var(--on-primary);
  border-color: var(--primary);
  box-shadow: none;
  font-size: 1.05rem;
  padding: 14px 24px;
}

.button:hover {
  opacity: 0.92;
  background: #f8fafc;
}

form {
  display: grid;
  gap: var(--space-4);
}

.wide-form {
  width: 100%;
}

.full-width {
  grid-column: 1 / -1;
}

.form-group {
  display: grid;
  gap: var(--space-2);
}

.wide-form input,
.wide-form textarea {
  width: 100%;
}

label {
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--on-surface);
}

input {
  padding: 14px 16px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--outline);
  font-size: 1.05rem;
  line-height: 1.4;
  background: #ffffff;
  color: var(--on-surface);
}

textarea {
  padding: 14px 16px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--outline);
  font-size: 1.05rem;
  line-height: 1.4;
  background: #ffffff;
  color: var(--on-surface);
}

input:focus,
textarea:focus,
select:focus {
  outline: 2px solid rgba(139, 31, 31, 0.25);
  border-color: var(--primary);
}

input[readonly],
textarea[readonly],
input:not([type='checkbox']):disabled,
textarea:disabled,
select:disabled {
  background: #eef2f6;
  color: #6b7280;
  border-color: #d1d9e2;
  cursor: not-allowed;
}

input[type='checkbox']:disabled {
  opacity: 0.55;
  cursor: not-allowed;
}

button {
  padding: 12px 16px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--primary);
  background: var(--primary);
  color: var(--on-primary);
  font-size: 1rem;
  font-weight: 600;
  cursor: pointer;
  transition: opacity 0.2s ease;
}

button:hover {
  opacity: 0.92;
}

.button.danger {
  background: var(--accent);
  border-color: var(--accent);
  color: #ffffff;
}

.menu-button {
  width: 44px;
  height: 44px;
  border-radius: 12px;
  border: 1px solid var(--outline);
  background: #ffffff;
  color: var(--on-surface);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 1px 3px var(--shadow);
  cursor: pointer;
  padding: 0;
}

.menu-button span {
  font-size: 1.3rem;
}

.message {
  min-height: 20px;
  font-size: 0.95rem;
  color: #b42318;
}

.message.success {
  color: #10793f;
}

.muted {
  color: var(--on-surface-variant);
  margin-top: 0;
}

.subtle-link {
  color: var(--accent);
  text-decoration: none;
  font-weight: 600;
}

.subtle-link:hover {
  text-decoration: underline;
}

.dashboard {
  display: grid;
  gap: var(--space-4);
}

.filter-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-3);
}

.button.ghost {
  background: transparent;
  color: var(--on-surface);
  border: 1px solid var(--outline);
  box-shadow: none;
}

.filters {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
  gap: var(--space-3);
  align-items: end;
}

.filters .form-actions {
  grid-column: 1 / -1;
  display: flex;
  gap: var(--space-2);
  flex-wrap: wrap;
  justify-content: flex-start;
}

.log-filters {
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
}

.filter-select {
  width: 100%;
  border-radius: var(--radius-sm);
  border: 1px solid var(--outline);
  padding: 12px 14px;
  background: var(--surface);
  font-weight: 600;
  font-size: 1.02rem;
  color: var(--on-surface);
}

.filter-actions {
  display: flex;
  gap: var(--space-2);
  flex-wrap: wrap;
}

.filter-actions button {
  width: auto;
}

.student-table {
  border: 1px solid var(--outline);
  border-radius: var(--radius-sm);
  overflow: hidden;
  background: var(--surface);
}

.grading-detail-table {
  overflow-x: auto;
}

.bulk-edit-panel {
  display: grid;
  gap: var(--space-3);
  margin-bottom: var(--space-4);
  padding: var(--space-4);
  border: 1px solid var(--outline);
  border-radius: var(--radius-sm);
  background: var(--surface);
}

.bulk-edit-row {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
  gap: var(--space-3);
  align-items: end;
}

.bulk-edit-panel .row-actions {
  order: -1;
}

.bulk-edit-row label {
  display: grid;
  gap: var(--space-2);
}

.bulk-edit-row input,
.bulk-edit-row select {
  width: 100%;
}

.grading-tools-sticky {
  position: sticky;
  top: 0;
  z-index: 20;
  background: var(--surface);
  margin: calc(var(--space-6) * -1) calc(var(--space-6) * -1) var(--space-3);
  padding: var(--space-6) var(--space-6) var(--space-3);
  border-bottom: 1px solid var(--outline);
  box-shadow: 0 8px 18px rgba(15, 23, 42, 0.08);
  padding-bottom: var(--space-3);
}

.enrollment-card-list {
  display: grid;
  gap: var(--space-3);
}

.enrollment-card {
  border: 1px solid var(--outline);
  border-radius: var(--radius-sm);
  background: var(--surface);
  padding: var(--space-4);
  display: grid;
  gap: var(--space-4);
}

.enrollment-card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: var(--space-3);
}

.enrollment-field {
  display: grid;
  gap: 4px;
}

.enrollment-field .label,
.enrollment-actions .label {
  font-size: 0.82rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--on-surface-variant);
  font-weight: 700;
}

.enrollment-field strong {
  font-size: 1.05rem;
  line-height: 1.3;
}

.enrollment-actions {
  display: grid;
  gap: var(--space-2);
}

.enrollment-actions .row-actions {
  flex-wrap: wrap;
  justify-content: flex-start;
}

.enrollment-empty {
  border: 1px dashed var(--outline);
  border-radius: var(--radius-sm);
  padding: var(--space-4);
  color: var(--on-surface-variant);
}

.script-list {
  display: grid;
  gap: var(--space-4);
}

.script-item {
  border: 1px solid var(--outline);
  border-radius: var(--radius);
  background: var(--surface);
  padding: var(--space-4);
  box-shadow: 0 12px 24px rgba(18, 32, 59, 0.08);
}

.script-header {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: var(--space-3);
  align-items: center;
}

.script-toggle {
  background: none;
  border: none;
  padding: 0;
  text-align: left;
  font-size: 1rem;
  font-weight: 700;
  color: var(--on-surface);
  cursor: pointer;
}

.script-actions {
  display: flex;
  gap: var(--space-2);
  flex-wrap: wrap;
}

@media (max-width: 720px) {
  .script-header {
    grid-template-columns: 1fr;
    align-items: flex-start;
  }

  .script-toggle {
    width: 100%;
  }

  .script-actions {
    width: 100%;
    justify-content: flex-start;
  }
}

.script-star {
  border: 1px solid var(--outline);
  background: var(--surface-variant);
  color: var(--on-surface);
  padding: 10px 14px;
  border-radius: 999px;
  font-weight: 600;
}

.script-item.is-starred {
  border-color: rgba(47, 158, 68, 0.4);
  box-shadow: 0 16px 28px rgba(47, 158, 68, 0.15);
}

.script-body {
  margin-top: var(--space-3);
  border-top: 1px solid var(--outline);
  padding-top: var(--space-3);
}

.script-body.is-hidden {
  display: none;
}

.script-text {
  white-space: pre-wrap;
  line-height: 1.6;
  color: var(--on-surface);
}

.toggle-field {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  font-weight: 600;
  color: var(--on-surface);
}

.toggle-field input {
  position: absolute;
  opacity: 0;
  pointer-events: none;
}

.toggle-slider {
  width: 48px;
  height: 28px;
  background: var(--surface-variant);
  border-radius: 999px;
  border: 1px solid var(--outline);
  position: relative;
  transition: background 0.2s ease, border-color 0.2s ease;
}

.toggle-slider::after {
  content: '';
  width: 22px;
  height: 22px;
  background: #ffffff;
  border-radius: 50%;
  position: absolute;
  top: 2px;
  left: 2px;
  box-shadow: 0 6px 12px rgba(18, 32, 59, 0.16);
  transition: transform 0.2s ease;
}

.toggle-field input:checked + .toggle-slider {
  background: var(--primary);
  border-color: var(--primary);
}

.toggle-field input:checked + .toggle-slider::after {
  transform: translateX(20px);
}

.student-dashboard-row {
  display: grid;
  grid-template-columns: minmax(160px, 1fr) minmax(220px, 1.5fr) minmax(200px, 1fr);
  gap: var(--space-3);
  padding: var(--space-3) var(--space-4);
  align-items: center;
}

.student-dashboard-row.cols-4 {
  grid-template-columns: minmax(140px, 1fr) minmax(220px, 1.6fr) minmax(140px, 1fr) minmax(180px, 1fr);
}

.student-dashboard-row.cols-5 {
  grid-template-columns: minmax(140px, 1fr) minmax(220px, 1.6fr) minmax(140px, 1fr) minmax(180px, 1fr) minmax(200px, 1fr);
}

.student-dashboard-row.cols-6 {
  grid-template-columns: minmax(140px, 1fr) minmax(220px, 1.6fr) minmax(140px, 1fr) minmax(160px, 1fr) minmax(180px, 1fr) minmax(180px, 1fr);
}

.student-dashboard-row.cols-7 {
  grid-template-columns: minmax(140px, 1fr) minmax(220px, 1.4fr) minmax(80px, 0.6fr) minmax(140px, 1fr) minmax(160px, 1fr) minmax(160px, 1fr) minmax(180px, 1fr);
}

.student-dashboard-row.cols-8 {
  grid-template-columns: minmax(140px, 1fr) minmax(220px, 1.4fr) minmax(80px, 0.6fr) minmax(140px, 1fr) minmax(160px, 1fr) minmax(160px, 1fr) minmax(160px, 1fr) minmax(180px, 1fr);
}

.student-dashboard-row.cols-9 {
  grid-template-columns: minmax(140px, 1fr) minmax(220px, 1.4fr) minmax(80px, 0.6fr) minmax(140px, 1fr) minmax(160px, 1fr) minmax(160px, 1fr) minmax(160px, 1fr) minmax(160px, 1fr) minmax(180px, 1fr);
}

.student-dashboard-row.cols-4 {
  grid-template-columns: minmax(140px, 1fr) minmax(220px, 1.6fr) minmax(160px, 1fr) minmax(140px, 1fr);
}

.report-elements {
  padding: var(--space-3) var(--space-4) var(--space-4);
  border-top: 1px solid var(--border);
  background: var(--surface-soft);
}

.report-element-row {
  display: grid;
  grid-template-columns: minmax(220px, 2fr) minmax(160px, 1fr) minmax(200px, 1fr) minmax(200px, 1fr) minmax(220px, 1.4fr) minmax(120px, 0.6fr);
  gap: var(--space-3);
  padding: var(--space-2) 0;
  align-items: center;
}

.report-element-header {
  font-weight: 600;
  color: var(--text-muted);
}

.report-element-empty {
  padding: var(--space-3) 0;
  color: var(--text-muted);
}

.row-actions {
  display: flex;
  gap: var(--space-2);
  flex-wrap: wrap;
}

.modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(20, 24, 32, 0.4);
  display: none;
  align-items: flex-start;
  justify-content: center;
  padding: var(--space-7) var(--space-6);
  z-index: 30;
}

.modal-overlay.is-open {
  display: flex;
}

.modal-card {
  width: min(840px, 96vw);
  background: var(--surface);
  border-radius: var(--radius);
  padding: var(--space-6);
  box-shadow: 0 22px 40px var(--shadow);
  display: grid;
  gap: var(--space-5);
  max-height: calc(100vh - var(--space-7) * 2);
  overflow-y: auto;
}

.checkin-group {
  padding: var(--space-5);
}

.checkin-summary {
  font-weight: 600;
  margin-top: var(--space-2);
}

.checkin-group-header {
  font-weight: 700;
  font-size: 1.1rem;
  margin-bottom: var(--space-4);
}

.checkin-list {
  display: grid;
  gap: var(--space-3);
}

.checkin-row {
  display: grid;
  grid-template-columns: minmax(180px, 1.2fr) 40px 140px;
  gap: var(--space-3);
  align-items: center;
  padding: var(--space-3);
  border: 1px solid var(--outline);
  border-radius: var(--radius-sm);
  background: var(--surface);
}

.checkin-status {
  font-weight: 700;
  color: var(--on-surface-variant);
}

.checkin-status.checked {
  color: #1b8f3e;
}

@media (max-width: 720px) {
  .checkin-row {
    grid-template-columns: 1fr;
    justify-items: start;
  }
}

.student-dashboard-row a {
  color: var(--primary);
  text-decoration: none;
  font-weight: 600;
}

.student-dashboard-row a:hover {
  text-decoration: underline;
}

.student-dashboard-row.header {
  background: var(--surface-variant);
  font-weight: 700;
}

.student-dashboard-row:nth-child(even) {
  background: rgba(0, 0, 0, 0.02);
}

.student-row {
  display: grid;
  grid-template-columns: minmax(220px, 1.6fr) 80px 120px minmax(220px, 1.5fr) minmax(120px, 0.8fr);
  gap: var(--space-3);
  padding: var(--space-3) var(--space-4);
  align-items: center;
}

.student-row.student-list-row {
  grid-template-columns: minmax(220px, 1.5fr) 80px 120px minmax(200px, 1.2fr) minmax(220px, 1.3fr) minmax(120px, 0.8fr);
}

.admin-row {
  display: grid;
  grid-template-columns: minmax(160px, 1fr) minmax(240px, 2fr) minmax(140px, 1fr) minmax(180px, 1.4fr) minmax(120px, 0.8fr);
  gap: var(--space-3);
  padding: var(--space-3) var(--space-4);
  align-items: center;
}

.admin-row.six-columns {
  grid-template-columns: minmax(120px, 0.8fr) minmax(200px, 1.6fr) minmax(140px, 0.9fr) minmax(180px, 1.2fr) minmax(120px, 0.8fr) minmax(120px, 0.8fr);
}

.admin-row.seven-columns {
  grid-template-columns: minmax(160px, 1.2fr) minmax(160px, 1fr) minmax(120px, 0.8fr) minmax(170px, 1.1fr) minmax(170px, 1.1fr) minmax(170px, 1.1fr) minmax(120px, 0.8fr);
}

.admin-row.grading-detail-columns {
  grid-template-columns:
    72px
    minmax(180px, 1.2fr)
    minmax(80px, 0.6fr)
    minmax(110px, 0.8fr)
    minmax(170px, 1fr)
    minmax(120px, 0.8fr)
    minmax(170px, 1.1fr)
    minmax(150px, 1fr)
    minmax(170px, 1.1fr)
    minmax(160px, 1fr)
    minmax(170px, 1.1fr)
    minmax(160px, 1fr)
    minmax(140px, 0.9fr)
    minmax(150px, 1fr)
    minmax(180px, 1.2fr)
    minmax(120px, 0.8fr);
  min-width: 2402px;
}

.grading-detail-columns .grid-cell-input,
.grading-detail-columns .grid-cell-select {
  width: 100%;
  min-width: 0;
}

.grading-detail-columns .grid-row-toggle {
  width: 18px;
  height: 18px;
}

.invite-viewer-modal {
  width: min(1120px, 96vw);
}

.invite-viewer-frame {
  width: 100%;
  height: min(82vh, 980px);
  border: 1px solid var(--outline);
  border-radius: var(--radius-sm);
  background: white;
}

.invite-email-modal {
  width: min(1120px, 96vw);
}

.invite-email-progress {
  width: 100%;
  height: 10px;
  border-radius: 999px;
  background: rgba(0, 0, 0, 0.08);
  overflow: hidden;
}

.invite-email-progress[aria-hidden="true"] {
  display: none;
}

.invite-email-progress-bar {
  width: 0;
  height: 100%;
  background: var(--primary);
  transition: width 160ms ease;
}

.invite-email-columns {
  grid-template-columns:
    minmax(220px, 1.2fr)
    minmax(220px, 1.2fr)
    minmax(320px, 1.8fr)
    minmax(200px, 1fr);
  min-width: 960px;
}

.invite-email-status {
  font-weight: 700;
}

.invite-email-status.sent,
.invite-email-status.ready {
  color: #1b8f3e;
}

.invite-email-status.sending {
  color: var(--primary);
}

.invite-email-status.failed,
.invite-email-status.missing_email {
  color: #c62828;
}

.invite-email-status.skipped {
  color: #8a5a00;
}

.sort-header {
  width: 100%;
  padding: 0;
  border: 0;
  background: transparent;
  color: inherit;
  font: inherit;
  text-align: left;
}

.header-control {
  display: flex;
  align-items: center;
  gap: 0.35rem;
}

.sort-header:hover {
  background: transparent;
  opacity: 0.75;
}

.sort-header.is-active {
  text-decoration: underline;
}

.filter-trigger {
  min-width: 1.9rem;
  padding: 0.15rem 0.4rem;
  border: 1px solid var(--outline);
  border-radius: var(--radius-sm);
  background: var(--surface);
  color: inherit;
  line-height: 1;
}

.filter-trigger:hover {
  opacity: 1;
}

.filter-trigger.is-active {
  border-color: var(--brand);
  color: var(--brand);
}

.grid-filter-menu {
  position: absolute;
  z-index: 50;
  width: min(320px, calc(100vw - 1rem));
  padding: var(--space-3);
  border: 1px solid var(--outline);
  border-radius: var(--radius-md);
  background: var(--surface);
  box-shadow: var(--shadow-lg);
}

.grid-filter-menu-header,
.grid-filter-actions {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-2);
}

.grid-filter-search {
  width: 100%;
  margin-top: var(--space-2);
}

.grid-filter-actions {
  margin-top: var(--space-2);
}

.grid-filter-options {
  display: grid;
  gap: 0.35rem;
  max-height: 260px;
  margin-top: var(--space-2);
  overflow: auto;
}

.grid-filter-option {
  display: flex;
  align-items: center;
  gap: 0.55rem;
  font-size: 0.95rem;
}

.customer-row {
  display: grid;
  grid-template-columns: minmax(200px, 1.2fr) minmax(220px, 1.5fr) minmax(160px, 1fr);
  gap: var(--space-3);
  padding: var(--space-3) var(--space-4);
  align-items: center;
}

.customer-row.signup-row {
  grid-template-columns: minmax(200px, 1.2fr) minmax(220px, 1.5fr) minmax(160px, 1fr) minmax(180px, 1fr);
}

/* Preserve database line breaks in shared list/detail text across screens. */
.student-dashboard-row > span,
.student-row > span,
.admin-row > span,
.customer-row > span,
.detail-item,
.detail-meta .meta-row,
.detail-subheading {
  white-space: pre-line;
  overflow-wrap: anywhere;
}

.customer-row a {
  color: var(--primary);
  text-decoration: none;
  font-weight: 600;
}

.customer-row a:hover {
  text-decoration: underline;
}

.customer-header {
  background: var(--surface-variant);
  font-weight: 700;
}

.customer-row:nth-child(even) {
  background: rgba(0, 0, 0, 0.02);
}

.student-name {
  display: flex;
  align-items: center;
  gap: var(--space-3);
}

.student-avatar {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  background: var(--surface-variant);
  border: 1px solid var(--outline);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  font-weight: 700;
  color: var(--on-surface-variant);
}

.student-avatar img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.student-row a {
  color: var(--primary);
  text-decoration: none;
  font-weight: 600;
}

.student-row a:hover {
  text-decoration: underline;
}

.student-header {
  background: var(--surface-variant);
  font-weight: 700;
}

.admin-header {
  background: var(--surface-variant);
  font-weight: 700;
}

.student-row:nth-child(even) {
  background: rgba(0, 0, 0, 0.02);
}

.admin-row:nth-child(even) {
  background: rgba(0, 0, 0, 0.02);
}

.pagination {
  display: flex;
  align-items: center;
  gap: var(--space-3);
}

.pagination button {
  width: auto;
}

.detail-list {
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
}

.detail-item {
  background: var(--surface-variant);
  border-radius: var(--radius-sm);
  padding: var(--space-3);
  border: 1px solid var(--outline);
}

.detail-item span {
  display: block;
  color: var(--on-surface-variant);
  font-size: 0.85rem;
  margin-bottom: var(--space-1);
}

.syllabus-element-item > span {
  font-weight: 700;
  color: var(--on-surface);
}

.detail-meta {
  display: grid;
  gap: var(--space-1);
  margin-top: var(--space-2);
  color: var(--on-surface-variant);
  font-size: 0.9rem;
}

.detail-meta .meta-row {
  line-height: 1.5;
}

.detail-subheading {
  margin-top: var(--space-2);
  font-weight: 600;
  color: var(--on-surface);
  font-size: 0.9rem;
}

.detail-grouping-heading {
  margin-top: var(--space-4);
  font-size: 1.4rem;
  font-weight: 700;
  color: var(--on-surface);
}

.detail-grade-heading {
  margin-top: var(--space-3);
  font-size: 1rem;
  font-weight: 700;
  color: var(--on-surface);
}

.library-search {
  display: grid;
  gap: var(--space-2);
}

.library-search input {
  width: 100%;
}

.library-grade-section {
  display: grid;
  gap: var(--space-2);
  margin-top: var(--space-3);
}

.library-grade-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-2);
}

.library-grade-header .detail-grade-heading {
  margin: 0;
}

.library-toggle-button {
  padding: 6px 12px;
  font-size: 0.85rem;
  white-space: nowrap;
}

.detail-sublist {
  margin: var(--space-2) 0 0;
  padding-left: var(--space-4);
  display: grid;
  gap: var(--space-1);
  color: var(--on-surface-variant);
  font-size: 0.9rem;
}

.detail-sublist li {
  list-style: disc;
}

.requirements-programs {
  display: grid;
  gap: var(--space-7);
}

.requirement-item-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-3);
}

.requirement-item-title {
  font-weight: 700;
  color: var(--on-surface);
}

.requirement-badge {
  display: inline-flex;
  align-items: center;
  padding: 2px 10px;
  border-radius: 999px;
  font-size: 0.75rem;
  font-weight: 700;
  background: var(--primary-container);
  border: 1px solid rgba(21, 87, 214, 0.2);
  color: var(--on-surface);
}

.requirement-badge.optional {
  background: var(--surface-variant);
  border-color: var(--outline);
  color: var(--on-surface-variant);
}

.is-hidden {
  display: none;
}

.audit-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.95rem;
}

.audit-table th,
.audit-table td {
  text-align: left;
  padding: 10px 12px;
  border-bottom: 1px solid var(--outline);
  vertical-align: top;
}

.audit-row.is-missing {
  background: rgba(255, 137, 96, 0.08);
}

.audit-badge {
  display: inline-flex;
  align-items: center;
  padding: 2px 10px;
  border-radius: 999px;
  font-size: 0.75rem;
  font-weight: 700;
  margin-right: 6px;
  margin-bottom: 4px;
}

.audit-badge.ok {
  background: var(--primary-container);
  border: 1px solid rgba(21, 87, 214, 0.2);
  color: var(--on-surface);
}

.audit-badge.missing {
  background: #ffe7e1;
  border: 1px solid rgba(255, 137, 96, 0.4);
  color: #7a2b17;
}

.audit-link {
  margin-left: 8px;
  white-space: nowrap;
}

.repeating-invoice-link {
  white-space: nowrap;
}

.audit-action-button {
  margin: 4px 0 0;
  padding: 4px 8px;
  font-size: 0.75rem;
}

.audit-modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.45);
  display: grid;
  place-items: center;
  padding: 16px;
  z-index: 1100;
}

.audit-modal-overlay.is-hidden {
  display: none;
}

.audit-modal-card {
  width: min(560px, 100%);
  background: var(--surface);
  color: var(--on-surface);
  border: 1px solid var(--outline);
  border-radius: var(--radius-3);
  box-shadow: var(--shadow-md);
  padding: 16px;
  max-height: calc(100vh - 32px);
  display: flex;
  flex-direction: column;
  gap: 10px;
  overflow: hidden;
}

.audit-modal-card h3 {
  margin: 0;
}

.audit-modal-card > .detail-meta {
  margin-top: 0;
}

.audit-modal-body {
  flex: 1 1 auto;
  min-height: 0;
  overflow-y: auto;
  padding-right: 4px;
}

.audit-field-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
  margin-bottom: 2px;
}

.audit-modal-body .detail-list {
  gap: 10px;
}

.audit-modal-body .detail-item {
  padding: 10px 12px;
}

.audit-modal-body .detail-meta {
  margin-top: 6px;
  gap: 2px;
  line-height: 1.35;
}

.audit-copy-button {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 4px 10px;
  font-size: 0.75rem;
  line-height: 1.2;
  flex: 0 0 auto;
}

.audit-copy-icon {
  width: 14px;
  height: 14px;
  display: inline-flex;
}

.audit-copy-icon svg {
  width: 14px;
  height: 14px;
  fill: currentColor;
}

.audit-modal-actions {
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 0;
  padding-top: 10px;
  border-top: 1px solid rgba(0, 0, 0, 0.06);
  background: var(--surface);
}

.audit-modal-actions-left {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
}

.billing-manager-page .form-actions {
  justify-content: flex-start;
  align-items: center;
  flex-wrap: wrap;
  gap: 8px;
}

.billing-manager-page .button {
  padding: 8px 14px;
  font-size: 0.92rem;
  background: #ffffff;
  color: var(--on-surface);
  border: 1px solid var(--outline);
  box-shadow: none;
}

.billing-manager-page .audit-modal-actions {
  justify-content: flex-start;
}

@media (max-width: 720px) {
  .audit-modal-overlay {
    padding: 10px;
    align-items: stretch;
  }

  .audit-modal-card {
    width: 100%;
    max-height: calc(100vh - 20px);
  }

  .audit-field-header {
    align-items: flex-start;
  }

  .audit-modal-actions-left,
  .billing-manager-page .audit-modal-actions {
    width: 100%;
  }
}

@media (max-width: 720px) {
  .student-dashboard-row {
    grid-template-columns: 1fr;
    gap: var(--space-2);
  }

  .student-row {
    grid-template-columns: 1fr;
    gap: var(--space-2);
  }

  .admin-row {
    grid-template-columns: 1fr;
    gap: var(--space-2);
  }

  .customer-row {
    grid-template-columns: 1fr;
    gap: var(--space-2);
  }
}

.stat-card {
  padding: var(--space-4);
  border-radius: var(--radius-sm);
  background: var(--primary-container);
  border: 1px solid rgba(21, 87, 214, 0.12);
}

.menu-overlay {
  position: fixed;
  inset: 0;
  background: transparent;
  backdrop-filter: blur(6px);
  -webkit-backdrop-filter: blur(6px);
  display: none;
  align-items: flex-start;
  justify-content: flex-start;
  padding: var(--space-7) var(--space-6);
  z-index: 20;
  overflow: auto;
}

.menu-overlay.is-open {
  display: flex;
}

.menu-panel {
  width: min(340px, 92vw);
  background: #ffffff;
  border-radius: var(--radius);
  padding: var(--space-5);
  box-shadow: 0 22px 40px var(--shadow);
  display: grid;
  gap: var(--space-4);
  max-height: calc(100vh - var(--space-7) * 2);
  overflow-y: auto;
}

.menu-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-3);
}

.menu-title {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  font-weight: 700;
}

.menu-section {
  display: grid;
  gap: var(--space-2);
  padding-top: var(--space-2);
  border-top: 1px solid var(--outline);
}

.menu-section-title {
  font-size: 0.8rem;
  text-transform: uppercase;
  letter-spacing: 0.2em;
  color: var(--on-surface-variant);
  font-weight: 700;
}

.pill-button {
  border-radius: 999px;
  border: 1px solid #4b5565;
  padding: 8px 16px;
  background: #ffffff;
  font-weight: 600;
  color: #1a1c20;
  cursor: pointer;
}

.profile-card {
  display: grid;
  grid-template-columns: 48px 1fr;
  gap: var(--space-3);
  align-items: center;
  padding: var(--space-4);
  border-radius: var(--radius-sm);
  background: #ffffff;
  text-decoration: none;
  color: var(--on-surface);
}

.menu-links {
  display: grid;
  gap: var(--space-2);
}

.menu-link {
  text-decoration: none;
  color: var(--on-surface);
  font-weight: 600;
  padding: var(--space-3) var(--space-4);
  border-radius: var(--radius-sm);
  background: #ffffff;
}

.menu-link:hover {
  background: var(--primary-container);
}

.theme-toggle {
  display: grid;
  gap: var(--space-3);
}

.theme-select {
  width: 100%;
  border-radius: var(--radius-sm);
  border: 1px solid var(--outline);
  padding: 12px 14px;
  background: #ffffff;
  font-weight: 600;
  font-size: 1.02rem;
  color: var(--on-surface);
}

.menu-footer {
  margin-top: auto;
  padding-top: var(--space-3);
  border-top: 1px solid var(--outline);
}

.menu-logout {
  width: 100%;
  border-radius: var(--radius-sm);
  background: var(--primary);
  color: var(--on-primary);
}

.form-actions {
  display: flex;
  justify-content: space-between;
  gap: var(--space-3);
  margin-top: var(--space-4);
}

.form-actions .button {
  width: auto;
}

.loading {
  display: none;
  align-items: center;
  gap: var(--space-2);
  color: var(--on-surface-variant);
  font-weight: 600;
}

.loading.is-visible {
  display: inline-flex;
}

.spinner {
  width: 16px;
  height: 16px;
  border: 2px solid var(--outline);
  border-top-color: var(--primary);
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
}

@keyframes spin {
  to {
    transform: rotate(360deg);
  }
}

[data-theme="dark"] {
  --primary: #8ab4ff;
  --primary-container: #1c2a3d;
  --on-primary: #0a0f1a;
  --secondary: #9ecae1;
  --surface: #12151c;
  --surface-variant: #1c2330;
  --on-surface: #f3f5f9;
  --on-surface-variant: #b3bccd;
  --outline: #323a4b;
  --shadow: rgba(0, 0, 0, 0.5);
}

[data-theme="blue"] {
  --primary: #0f5bd4;
  --primary-container: #e4efff;
  --on-primary: #ffffff;
  --secondary: #1976d2;
  --surface: #f6f9ff;
  --surface-variant: #e8f1ff;
  --on-surface: #0f1b2d;
  --on-surface-variant: #36485f;
  --outline: #c3d5ef;
  --shadow: rgba(12, 48, 112, 0.18);
}

.avatar {
  width: 48px;
  height: 48px;
  border-radius: 50%;
  background: var(--primary);
  color: var(--on-primary);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  overflow: hidden;
}

.avatar img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.profile-text span {
  display: block;
}

.profile-text .name {
  font-weight: 600;
}

.profile-text .email {
  color: var(--on-surface-variant);
  font-size: 0.9rem;
}

.profile-layout {
  display: grid;
  gap: var(--space-4);
}

.upload-row {
  display: flex;
  align-items: center;
  gap: var(--space-4);
  flex-wrap: wrap;
}

.avatar-preview {
  width: 96px;
  height: 96px;
  border-radius: 24px;
  background: var(--surface-variant);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  border: 1px solid rgba(21, 87, 214, 0.15);
}

.avatar-preview img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

@keyframes rise {
  from {
    opacity: 0;
    transform: translateY(12px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@media (max-width: 720px) {
  header {
    padding: var(--space-3);
  }

  main {
    padding: var(--space-5) var(--space-3) var(--space-6);
  }
}