:root {
  color-scheme: light;
  --bg: #f6f7f9;
  --surface: #ffffff;
  --surface-soft: #eef2f6;
  --ink: #18202a;
  --muted: #647180;
  --line: #d9e0e8;
  --line-strong: #bec8d3;
  --blue: #2557a7;
  --blue-strong: #153f84;
  --green: #14735d;
  --green-soft: #e6f4ee;
  --amber: #9b6500;
  --amber-soft: #fff4db;
  --red: #b42318;
  --red-soft: #ffe7e5;
  --cyan-soft: #e8f5f7;
  --shadow: 0 16px 50px rgba(21, 38, 64, 0.12);
  --radius: 8px;
  --sidebar: 260px;
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
}

.auth-screen {
  min-height: 100vh;
  display: grid;
  place-items: center;
  padding: 22px;
}

.auth-panel {
  width: min(430px, 100%);
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  padding: 22px;
  display: grid;
  gap: 18px;
}

.auth-panel-wide {
  width: min(560px, 100%);
}

.auth-brand {
  padding-bottom: 14px;
  border-bottom: 1px solid var(--line);
}

.auth-form {
  display: grid;
  gap: 14px;
}

.auth-note {
  margin: 0;
  color: var(--muted);
  font-size: 0.92rem;
  line-height: 1.45;
}

.auth-message {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 14px;
  display: grid;
  grid-template-columns: 42px minmax(0, 1fr);
  gap: 12px;
  align-items: start;
  background: #fbfcfe;
}

.auth-message h1 {
  margin: 0 0 4px;
  font-size: 1.2rem;
}

.auth-message p {
  margin: 0;
  color: var(--muted);
  line-height: 1.45;
}

.auth-message-icon {
  width: 42px;
  height: 42px;
  border-radius: var(--radius);
  display: grid;
  place-items: center;
  color: var(--blue-strong);
  background: #e8f0ff;
}

.auth-message-icon i[data-lucide] {
  width: 22px;
  height: 22px;
}

.success-message {
  border-color: #badccc;
  background: var(--green-soft);
}

.success-message .auth-message-icon {
  color: var(--green);
  background: #d9efe5;
}

.warning-message {
  border-color: #f1d18a;
  background: var(--amber-soft);
}

.warning-message .auth-message-icon {
  color: var(--amber);
  background: #ffe8b6;
}

button,
input,
select,
textarea {
  font: inherit;
}

button {
  cursor: pointer;
}

.app-shell {
  min-height: 100vh;
  display: grid;
  grid-template-columns: var(--sidebar) minmax(0, 1fr);
}

.sidebar {
  background: #f9fbfd;
  border-right: 1px solid var(--line);
  padding: 20px 18px;
  display: flex;
  flex-direction: column;
  gap: 22px;
  position: sticky;
  top: 0;
  height: 100vh;
}

.brand {
  display: flex;
  align-items: center;
  gap: 12px;
  min-height: 44px;
}

.brand-mark {
  width: 40px;
  height: 40px;
  border-radius: 8px;
  display: grid;
  place-items: center;
  color: #fff;
  background: var(--blue);
  flex: 0 0 auto;
}

.brand-title {
  font-weight: 760;
  line-height: 1.1;
}

.brand-subtitle {
  color: var(--muted);
  font-size: 0.82rem;
  margin-top: 2px;
}

.nav {
  display: grid;
  gap: 6px;
}

.nav-button {
  border: 0;
  background: transparent;
  color: var(--muted);
  min-height: 42px;
  display: flex;
  align-items: center;
  gap: 10px;
  border-radius: var(--radius);
  padding: 0 12px;
  text-align: left;
  width: 100%;
}

.nav-button:hover,
.nav-button.is-active {
  background: #e9eff7;
  color: var(--blue-strong);
}

.nav-button.is-active {
  font-weight: 700;
}

.sidebar-footer {
  margin-top: auto;
  padding-top: 16px;
  border-top: 1px solid var(--line);
  display: grid;
  gap: 10px;
  color: var(--muted);
  font-size: 0.88rem;
}

.status-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--green);
  display: inline-block;
}

.main {
  min-width: 0;
}

.topbar {
  min-height: 72px;
  border-bottom: 1px solid var(--line);
  background: rgba(255, 255, 255, 0.88);
  backdrop-filter: blur(14px);
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 0 28px;
  position: sticky;
  top: 0;
  z-index: 8;
  min-width: 0;
}

.topbar h1 {
  margin: 0;
  font-size: 1.22rem;
  letter-spacing: 0;
}

.topbar > div {
  min-width: 0;
}

.topbar-meta {
  color: var(--muted);
  font-size: 0.9rem;
  margin-top: 2px;
}

.topbar-actions {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-wrap: wrap;
  justify-content: flex-end;
  min-width: 0;
}

.teacher-topbar {
  align-items: center;
}

.teacher-topbar .topbar-actions {
  flex: 0 1 auto;
}

.teacher-topbar-controls {
  display: flex;
  align-items: center;
  justify-content: flex-end;
  gap: 12px;
  min-width: 0;
}

.teacher-topbar-field {
  width: 310px;
  min-width: 260px;
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  align-items: center;
  gap: 8px;
}

.teacher-topbar-field > span {
  color: var(--muted);
  font-size: 0.84rem;
  font-weight: 720;
  white-space: nowrap;
}

.teacher-topbar-field select {
  min-height: 38px;
  height: 38px;
}

.teacher-topbar-buttons {
  display: flex;
  align-items: center;
  gap: 6px;
  flex-wrap: nowrap;
  padding: 4px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: #fff;
}

.teacher-topbar-buttons.is-actions-only {
  box-shadow: 0 1px 0 rgba(20, 31, 46, 0.03);
}

.teacher-topbar-buttons .button {
  min-height: 34px;
  padding-inline: 10px;
  border-color: transparent;
  background: transparent;
}

.teacher-topbar-buttons .teacher-icon-action {
  width: 36px;
  min-width: 36px;
  padding: 0;
}

.teacher-topbar-buttons .button:hover {
  background: #eef4ff;
  border-color: transparent;
}

.teacher-topbar-buttons .button[data-action="logout"]:hover {
  background: var(--red-soft);
  color: var(--red);
}

.content {
  padding: 24px 28px 36px;
  display: grid;
  gap: 18px;
  min-width: 0;
  max-width: 100%;
}

.parent-shell {
  min-height: 100vh;
  display: grid;
  grid-template-rows: auto 1fr;
}

.parent-topbar {
  min-height: 70px;
  border-bottom: 1px solid var(--line);
  background: rgba(255, 255, 255, 0.9);
  backdrop-filter: blur(14px);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 0 28px;
  position: sticky;
  top: 0;
  z-index: 8;
}

.parent-main {
  width: min(1120px, 100%);
  margin: 0 auto;
  padding: 26px 28px 42px;
  display: grid;
  gap: 18px;
  align-content: start;
}

.parent-heading {
  display: flex;
  align-items: end;
  justify-content: space-between;
  gap: 16px;
}

.parent-heading h1 {
  margin: 0;
  font-size: 1.38rem;
  letter-spacing: 0;
}

.parent-content {
  padding: 0;
  align-content: start;
}

.parent-intro {
  max-width: 960px;
  color: var(--muted);
  line-height: 1.55;
}

.parent-intro p {
  margin: 0;
}

.section {
  display: grid;
  gap: 14px;
  min-width: 0;
  max-width: 100%;
}

.section-header {
  display: flex;
  align-items: end;
  justify-content: space-between;
  gap: 16px;
}

.section-header h2 {
  margin: 0;
  font-size: 1.05rem;
}

.section-note {
  margin: 4px 0 0;
  color: var(--muted);
  font-size: 0.9rem;
}

.grid {
  display: grid;
  gap: 14px;
}

.grid.stats {
  grid-template-columns: repeat(4, minmax(170px, 1fr));
}

.grid.two {
  grid-template-columns: minmax(0, 1.2fr) minmax(320px, 0.8fr);
}

.teacher-slot-builder {
  grid-template-columns: minmax(360px, 1fr) minmax(280px, 0.72fr);
  align-items: stretch;
}

.teacher-slot-builder > * {
  min-width: 0;
}

.stat-card,
.panel,
.table-wrap,
.modal-card,
.toast,
.slot-day,
.appointment-card {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
}

.stat-card {
  padding: 16px;
  display: grid;
  gap: 10px;
  min-height: 120px;
}

.stat-top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
}

.stat-value {
  font-size: 1.8rem;
  line-height: 1;
  font-weight: 780;
}

.stat-label {
  color: var(--muted);
  font-size: 0.9rem;
}

.stat-trend {
  color: var(--green);
  font-size: 0.84rem;
  font-weight: 700;
}

.panel {
  padding: 18px;
  display: grid;
  gap: 14px;
}

.teacher-slot-form,
.teacher-slot-preview {
  align-self: stretch;
  min-height: 420px;
}

.teacher-slot-form {
  gap: 16px;
}

.teacher-generator-grid {
  grid-template-columns: repeat(2, minmax(0, 1fr));
}

.teacher-slot-preview {
  display: grid;
  grid-template-rows: auto minmax(0, 1fr);
}

.teacher-slot-preview .panel-header {
  gap: 10px;
  flex-wrap: wrap;
}

.teacher-preview-list {
  max-height: 360px;
  min-height: 0;
  overflow: auto;
  padding-right: 4px;
}

.teacher-preview-list .chip {
  width: 100%;
  justify-content: flex-start;
  min-width: 0;
}

@media (max-width: 900px) {
  .teacher-slot-builder {
    grid-template-columns: 1fr;
  }

  .teacher-slot-form,
  .teacher-slot-preview {
    max-width: none;
    min-height: 0;
  }

  .teacher-preview-list {
    max-height: 260px;
  }
}

.panel-header {
  display: flex;
  justify-content: space-between;
  gap: 16px;
  align-items: center;
}

.dashboard-nearest-panel {
  align-content: start;
  position: relative;
}

.dashboard-nearest-header {
  justify-content: flex-start;
  min-height: 40px;
  padding-right: 178px;
}

.dashboard-nearest-header .button {
  position: absolute;
  top: 18px;
  right: 18px;
}

.panel-title {
  margin: 0;
  font-size: 1rem;
}

.generator-page {
  display: grid;
  grid-template-columns: minmax(0, 1160px);
  align-items: start;
}

.generator-panel {
  align-self: start;
  gap: 16px;
  padding: 16px;
}

.generator-panel .panel-header {
  align-items: flex-start;
}

.generator-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(280px, 360px);
  gap: 16px;
  align-items: start;
}

.generator-fields {
  display: grid;
  gap: 14px;
  min-width: 0;
}

.generator-grid {
  gap: 12px;
  align-items: start;
}

.generator-grid .field.full {
  grid-column: 1 / -1;
}

.generator-actions {
  display: flex;
  justify-content: flex-end;
  border-top: 1px solid var(--line);
  padding-top: 12px;
}

.generator-preview-card {
  align-self: start;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: #f8fafc;
  padding: 12px;
  display: grid;
  gap: 10px;
  min-width: 0;
}

.generator-preview-header {
  display: flex;
  justify-content: space-between;
  gap: 10px;
  align-items: center;
}

.generator-preview-header h3 {
  margin: 0;
  font-size: 0.95rem;
}

.generator-preview-list {
  display: grid;
  gap: 7px;
  max-height: 340px;
  overflow: auto;
  padding-right: 2px;
}

.generator-preview-item {
  min-height: 36px;
  border: 1px solid var(--line);
  border-radius: 999px;
  background: #fff;
  display: grid;
  grid-template-columns: 18px minmax(120px, auto) minmax(0, 1fr);
  gap: 7px;
  align-items: center;
  padding: 0 10px;
  font-size: 0.86rem;
}

.generator-preview-item i {
  width: 17px;
  height: 17px;
}

.generator-preview-item small {
  color: var(--muted);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.generator-preview-more {
  color: var(--muted);
  font-size: 0.86rem;
  font-weight: 720;
  padding: 4px 2px;
}

.generator-empty {
  min-height: 90px;
}

.reports-page {
  grid-template-columns: minmax(0, 1fr);
}

.report-download-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 14px;
  border-top: 1px solid var(--line);
  padding-top: 14px;
}

.report-range-card {
  display: grid;
  gap: 3px;
  min-width: 220px;
}

.report-range-card span {
  color: var(--muted);
  font-size: 0.86rem;
  font-weight: 700;
}

.report-range-card strong {
  font-size: 1.08rem;
}

.teacher-overview-sections {
  gap: 16px;
}

.teacher-overview-panel {
  padding: 16px;
}

.teacher-day-list {
  display: grid;
  gap: 10px;
}

.teacher-day-card {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: #fff;
  padding: 12px;
  display: grid;
  grid-template-columns: 150px minmax(0, 1fr);
  gap: 14px;
  align-items: start;
}

.teacher-day-head {
  display: grid;
  gap: 2px;
}

.teacher-day-date {
  font-weight: 780;
}

.teacher-appointment-list {
  display: grid;
  gap: 8px;
}

.teacher-appointment-row {
  display: grid;
  gap: 8px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: #fbfcfe;
  padding: 8px 10px 10px;
}

.teacher-appointment-main {
  min-height: 36px;
  display: grid;
  grid-template-columns: 92px minmax(140px, 1fr) minmax(140px, 1fr) auto;
  gap: 12px;
  align-items: center;
}

.teacher-appointment-row strong,
.teacher-appointment-row span {
  min-width: 0;
  overflow-wrap: anywhere;
}

.teacher-appointment-main > div:not(.teacher-appointment-time) {
  display: grid;
  gap: 1px;
}

.teacher-appointment-main > div:not(.teacher-appointment-time) span {
  color: var(--muted);
  font-size: 0.8rem;
  font-weight: 650;
}

.teacher-appointment-time {
  font-weight: 780;
  color: var(--blue-strong);
}

.teacher-appointment-note {
  display: grid;
  grid-template-columns: 20px minmax(0, 1fr);
  gap: 8px;
  align-items: start;
  border-top: 1px solid var(--line);
  padding-top: 8px;
  color: var(--muted);
  font-size: 0.86rem;
  line-height: 1.35;
}

.teacher-appointment-note i[data-lucide] {
  width: 17px;
  height: 17px;
  margin-top: 1px;
  color: var(--blue-strong);
}

.teacher-appointment-note div {
  display: grid;
  gap: 2px;
}

.teacher-appointment-note strong {
  color: var(--ink);
  font-size: 0.82rem;
}

.teacher-free-day-card .chips {
  align-self: center;
}

.toolbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  flex-wrap: wrap;
  min-width: 0;
  max-width: 100%;
}

.toolbar-left,
.toolbar-right,
.inline-controls {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-wrap: wrap;
  min-width: 0;
}

.field {
  display: grid;
  gap: 6px;
}

.field label,
.check-field {
  color: var(--muted);
  font-size: 0.86rem;
  font-weight: 650;
}

.field input,
.field select,
.field textarea,
.search-input {
  border: 1px solid var(--line-strong);
  border-radius: var(--radius);
  min-height: 40px;
  padding: 0 11px;
  background: #fff;
  color: var(--ink);
  outline: none;
}

.field select {
  -webkit-appearance: none;
  appearance: none;
  width: 100%;
  height: 40px;
  line-height: 1.2;
  padding-right: 38px;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='20' height='20' viewBox='0 0 24 24' fill='none' stroke='%2318202a' stroke-width='2.4' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='m6 9 6 6 6-6'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 11px center;
  background-size: 18px 18px;
}

.field textarea {
  padding: 10px 11px;
  min-height: 82px;
  resize: vertical;
}

.checkbox-field {
  align-content: start;
}

.checkbox-field > span {
  color: var(--muted);
  font-size: 0.86rem;
  font-weight: 650;
}

.checkbox-options {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.checkbox-option {
  min-height: 40px;
  border: 1px solid var(--line-strong);
  border-radius: var(--radius);
  padding: 0 11px;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: #fff;
  color: var(--ink);
  font-weight: 650;
}

.checkbox-option input {
  width: 18px;
  height: 18px;
  accent-color: var(--blue);
}

.topbar-field {
  min-width: min(260px, 100%);
}

.topbar-field select {
  min-height: 40px;
}

.field input:focus,
.field select:focus,
.field textarea:focus,
.search-input:focus {
  border-color: var(--blue);
  box-shadow: 0 0 0 3px rgba(37, 87, 167, 0.14);
}

.search-wrap {
  display: flex;
  align-items: center;
  gap: 9px;
  min-width: min(320px, 100%);
  border: 1px solid var(--line-strong);
  border-radius: var(--radius);
  padding: 0 10px;
  min-height: 40px;
  background: #fff;
}

.search-wrap .search-input {
  border: 0;
  box-shadow: none;
  min-width: 0;
  width: 100%;
  padding: 0;
}

.segmented {
  display: inline-grid;
  grid-auto-flow: column;
  border: 1px solid var(--line-strong);
  border-radius: var(--radius);
  overflow: hidden;
  background: #fff;
}

.segment {
  border: 0;
  background: transparent;
  min-height: 38px;
  padding: 0 12px;
  color: var(--muted);
}

.segment.is-active {
  color: #fff;
  background: var(--blue);
}

.button {
  border: 1px solid transparent;
  border-radius: var(--radius);
  min-height: 40px;
  padding: 0 13px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  font-weight: 720;
  background: var(--surface-soft);
  color: var(--ink);
  text-decoration: none;
  white-space: nowrap;
}

.button:disabled {
  cursor: not-allowed;
  opacity: 0.55;
}

.button:hover {
  border-color: var(--line-strong);
}

.button.primary {
  background: var(--blue);
  color: #fff;
}

.button.primary:hover {
  background: var(--blue-strong);
  border-color: var(--blue-strong);
}

.button.ghost {
  background: transparent;
  border-color: var(--line);
}

.button.danger {
  background: var(--red);
  color: #fff;
}

.button.warning {
  background: var(--amber-soft);
  color: var(--amber);
  border-color: #f1d18a;
}

.icon-button {
  width: 38px;
  height: 38px;
  border-radius: var(--radius);
  border: 1px solid var(--line);
  background: #fff;
  color: var(--muted);
  display: inline-grid;
  place-items: center;
}

.icon-button:hover {
  color: var(--blue);
  border-color: var(--blue);
}

.icon-button.danger:hover {
  color: var(--red);
  border-color: var(--red);
  background: var(--red-soft);
}

.table-wrap {
  overflow: hidden;
  min-width: 0;
  max-width: 100%;
}

.table-scroller {
  overflow-x: auto;
  width: 100%;
  max-width: 100%;
}

table {
  width: 100%;
  border-collapse: collapse;
  min-width: 760px;
}

th,
td {
  padding: 12px 14px;
  border-bottom: 1px solid var(--line);
  text-align: left;
  vertical-align: middle;
}

th {
  color: var(--muted);
  font-size: 0.78rem;
  text-transform: uppercase;
  letter-spacing: 0;
  background: #fbfcfe;
}

tbody tr:hover {
  background: #f8fafc;
}

.cell-strong {
  font-weight: 730;
}

.teacher-table .teacher-actions-heading,
.teacher-table .teacher-actions {
  position: sticky;
  right: 0;
  width: 104px;
  min-width: 104px;
  padding-left: 8px;
  padding-right: 8px;
  text-align: right;
  white-space: nowrap;
  background: #fff;
  box-shadow: -12px 0 18px rgba(21, 38, 64, 0.08);
  z-index: 1;
}

.teacher-table .teacher-actions-heading {
  background: #fbfcfe;
  z-index: 3;
}

.teacher-table tbody tr:hover .teacher-actions {
  background: #f8fafc;
}

.teacher-table .teacher-actions .icon-button + .icon-button {
  margin-left: 6px;
}

.teacher-login-meta {
  color: var(--muted);
  display: inline-flex;
  align-items: center;
  gap: 5px;
  font-size: 0.84rem;
  font-weight: 650;
  margin-top: 6px;
}

.teacher-login-meta i[data-lucide] {
  width: 14px;
  height: 14px;
}

.muted {
  color: var(--muted);
}

.badge {
  display: inline-flex;
  align-items: center;
  min-height: 24px;
  padding: 0 8px;
  border-radius: 999px;
  font-size: 0.78rem;
  font-weight: 720;
  border: 1px solid transparent;
}

.badge.green {
  color: var(--green);
  background: var(--green-soft);
}

.badge.blue {
  color: var(--blue-strong);
  background: #e7eefb;
}

.badge.amber {
  color: var(--amber);
  background: var(--amber-soft);
}

.badge.red {
  color: var(--red);
  background: var(--red-soft);
}

.chips {
  display: flex;
  gap: 7px;
  flex-wrap: wrap;
}

.chip {
  border: 1px solid var(--line);
  border-radius: 999px;
  min-height: 30px;
  padding: 0 9px;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background: #fff;
  color: var(--ink);
  font-size: 0.88rem;
  max-width: 100%;
}

.chip span {
  min-width: 0;
  overflow-wrap: anywhere;
}

.chip .icon-button {
  width: 22px;
  height: 22px;
  border: 0;
  background: transparent;
}

.slot-chip .icon-button {
  width: 26px;
  height: 26px;
  min-width: 26px;
  margin-right: -5px;
  border-radius: 999px;
  display: inline-grid;
  place-items: center;
  padding: 0;
}

.slot-chip .icon-button i[data-lucide] {
  width: 18px;
  height: 18px;
  display: block;
}

.slot-chip .icon-button.danger:hover {
  background: var(--red-soft);
  color: var(--red);
  border-color: transparent;
}

.slot-chip {
  border-color: #cfe1d9;
  background: #f8fffb;
}

.slot-chip.is-booked {
  border-color: #f0b8b2;
  background: var(--red-soft);
  color: var(--red);
}

.slot-chip.is-booked .badge.red {
  background: #fff;
  border-color: #f0b8b2;
}

.slot-days {
  display: grid;
  gap: 10px;
}

.slot-day {
  padding: 14px;
  display: grid;
  grid-template-columns: 150px minmax(0, 1fr) auto;
  gap: 14px;
  align-items: start;
}

.slot-date {
  font-weight: 760;
}

.slot-actions {
  display: flex;
  gap: 8px;
}

.appointment-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(200px, 1fr));
  gap: 12px;
}

.appointment-card {
  padding: 14px;
  display: grid;
  gap: 8px;
}

.appointment-time {
  font-weight: 780;
}

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

.form-grid.three {
  grid-template-columns: repeat(3, minmax(0, 1fr));
}

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

.role-card {
  border: 1px solid var(--line);
  background: #fff;
  border-radius: var(--radius);
  min-height: 112px;
  padding: 13px;
  display: grid;
  gap: 8px;
  text-align: left;
  align-content: start;
}

.role-card:hover,
.role-card.is-active,
.slot-option:hover,
.slot-option.is-active {
  border-color: var(--blue);
  box-shadow: 0 0 0 3px rgba(37, 87, 167, 0.12);
}

.role-card.is-active,
.slot-option.is-active {
  background: #f0f5ff;
}

.role-card-title {
  font-weight: 760;
}

.slot-picker {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 9px;
}

.slot-option {
  min-height: 54px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: #fff;
  display: grid;
  grid-template-columns: 22px minmax(0, 1fr) auto;
  align-items: center;
  gap: 8px;
  padding: 0 11px;
  text-align: left;
}

.parent-flow {
  display: grid;
  gap: 16px;
  align-content: start;
}

.parent-booking-body,
.parent-modal-step {
  display: grid;
  gap: 16px;
}

.parent-progress {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 8px;
}

.parent-step {
  min-height: 38px;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: #fff;
  color: var(--muted);
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 7px 10px;
  font-size: 0.86rem;
  font-weight: 720;
  flex: 0 0 auto;
  white-space: nowrap;
}

.parent-step span {
  width: 24px;
  height: 24px;
  border-radius: 999px;
  display: grid;
  place-items: center;
  background: #edf2f7;
  color: var(--muted);
  flex: 0 0 auto;
}

.parent-step.is-complete {
  border-color: #b9d5c8;
  color: var(--green);
  background: #f4fbf7;
}

.parent-step.is-complete span {
  background: var(--green);
  color: #fff;
}

.parent-step.is-active {
  border-color: var(--blue);
  box-shadow: 0 0 0 3px rgba(37, 87, 167, 0.1);
}

.parent-picker-header {
  display: flex;
  justify-content: space-between;
  gap: 16px;
  align-items: end;
}

.parent-search {
  width: min(360px, 100%);
}

.parent-teacher-menu {
  display: grid;
  gap: 8px;
}

.parent-teacher-item {
  min-height: 78px;
  width: 100%;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: #fff;
  display: grid;
  grid-template-columns: minmax(0, 1fr) 22px;
  align-items: center;
  gap: 12px;
  padding: 12px 14px;
  text-align: left;
}

.parent-teacher-item:hover,
.parent-teacher-item:focus-visible {
  border-color: var(--blue);
  box-shadow: 0 0 0 3px rgba(37, 87, 167, 0.12);
}

.parent-teacher-main {
  min-width: 0;
  display: grid;
  gap: 5px;
}

.parent-teacher-main .muted {
  overflow-wrap: anywhere;
}

.parent-details-grid {
  align-items: start;
}

.reservation-summary {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: #fff;
}

.parent-form {
  padding: 16px;
}

.parent-modal-form {
  padding: 16px;
}

.parent-form-actions {
  display: flex;
  justify-content: flex-end;
  gap: 10px;
}

.parent-step-heading {
  display: flex;
  align-items: end;
  justify-content: space-between;
  gap: 16px;
}

.success-panel {
  border-color: #b9d5c8;
  background: #f9fffb;
}

.parent-slot-modal,
.parent-booking-modal {
  width: min(780px, 100%);
}

.parent-booking-modal.modal-card {
  overflow: visible;
  max-height: none;
}

.parent-booking-modal .modal-header {
  padding: 14px 18px;
}

.parent-booking-modal .modal-body {
  padding: 14px 18px 16px;
}

.parent-booking-modal .parent-booking-body,
.parent-booking-modal .parent-modal-step {
  gap: 12px;
}

.parent-booking-modal .parent-progress {
  gap: 7px;
}

.parent-booking-modal .parent-step {
  min-height: 34px;
  padding: 6px 9px;
}

.parent-booking-modal .parent-step span {
  width: 22px;
  height: 22px;
}

.parent-booking-modal .parent-details-grid {
  grid-template-columns: 1fr;
  gap: 10px;
}

.parent-booking-modal .reservation-summary {
  background: #f8fbff;
  border-color: #c8d7ee;
  padding: 12px 14px;
  gap: 8px;
}

.parent-booking-modal .reservation-summary .badge {
  justify-self: start;
}

.parent-booking-modal .parent-modal-form {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: #fff;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  align-items: start;
  gap: 12px 14px;
  padding: 12px 14px;
}

.parent-booking-modal .parent-modal-form .field {
  min-width: 0;
}

.parent-booking-modal .parent-modal-form input,
.parent-booking-modal .parent-modal-form textarea {
  width: 100%;
}

.parent-booking-modal .parent-form-actions {
  border-top: 1px solid var(--line);
  padding-top: 12px;
}

.parent-booking-modal .parent-modal-form textarea {
  min-height: 74px;
}

.parent-date-picker {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: #fff;
  padding: 12px;
  display: grid;
  gap: 10px;
}

.parent-date-picker-main {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  align-items: end;
  gap: 12px;
}

.parent-date-control {
  display: grid;
  gap: 7px;
}

.parent-date-control > span {
  color: var(--muted);
  font-size: 0.82rem;
  font-weight: 760;
}

.parent-date-trigger {
  width: 100%;
  height: 64px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #f8fbff;
  color: var(--text);
  padding: 10px 12px 10px 14px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  cursor: pointer;
  text-align: left;
  box-shadow: inset 0 0 0 1px rgba(255, 255, 255, 0.75);
}

.parent-date-trigger:hover,
.parent-date-trigger.is-open {
  border-color: var(--primary);
  background: #f4f8ff;
  box-shadow: 0 0 0 4px #e8f0ff;
}

.parent-date-trigger span {
  display: grid;
  gap: 2px;
  min-width: 0;
}

.parent-date-trigger strong {
  font-size: 1.05rem;
  font-weight: 800;
  line-height: 1.15;
}

.parent-date-trigger small {
  color: var(--muted);
  font-size: 0.78rem;
  font-weight: 680;
}

.parent-date-trigger i {
  width: 21px;
  height: 21px;
  flex: 0 0 auto;
}

.parent-date-summary {
  height: 64px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #f8fafc;
  padding: 10px 12px;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 6px;
  flex-wrap: wrap;
  text-align: center;
}

.parent-date-menu {
  border: 1px solid #cbd8ea;
  border-radius: 8px;
  background: #fbfdff;
  padding: 12px;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(185px, 1fr));
  gap: 10px;
  overflow: visible;
  box-shadow: 0 14px 30px rgba(23, 42, 67, 0.12);
}

.parent-date-menu-option {
  min-height: 60px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #fff;
  color: var(--text);
  padding: 10px 11px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  cursor: pointer;
  text-align: left;
}

.parent-date-menu-option:hover {
  border-color: #a9bddb;
  background: #f7faff;
}

.parent-date-menu-option.is-selected {
  border-color: var(--primary);
  background: #edf4ff;
  color: #173f83;
  box-shadow: inset 0 0 0 1px rgba(45, 95, 177, 0.18);
}

.parent-date-option-text {
  display: grid;
  gap: 3px;
  min-width: 0;
}

.parent-date-option-text strong {
  font-weight: 800;
  line-height: 1.1;
}

.parent-date-option-text span {
  color: var(--muted);
  font-size: 0.82rem;
  font-weight: 720;
}

.parent-date-menu-option.is-selected .parent-date-option-text span {
  color: #2b579a;
}

.parent-date-option-check {
  width: 27px;
  height: 27px;
  border-radius: 999px;
  background: var(--primary);
  color: #fff;
  display: inline-grid;
  place-items: center;
  flex: 0 0 auto;
}

.parent-date-option-check i {
  width: 16px;
  height: 16px;
}

.parent-slot-list {
  display: grid;
  gap: 14px;
}

.parent-slot-day {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: #fff;
  padding: 14px;
  display: grid;
  gap: 12px;
}

.parent-slot-date {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
}

.parent-slot-picker {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(122px, 1fr));
  gap: 9px;
  overflow: visible;
  padding-bottom: 0;
}

.parent-slot-option {
  min-height: 56px;
  grid-template-columns: 22px auto;
  justify-content: center;
  white-space: nowrap;
}

.parent-slot-actions {
  border-top: 1px solid var(--line);
  padding-top: 12px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
}

.parent-done-panel {
  border: 1px solid #b9d5c8;
  border-radius: var(--radius);
  padding: 16px;
  display: grid;
  gap: 14px;
}

.profile-line {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  min-height: 70px;
  padding: 12px;
  display: grid;
  gap: 5px;
  background: #fff;
}

.profile-line span {
  color: var(--muted);
  font-size: 0.84rem;
  font-weight: 650;
}

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

.danger-zone {
  border: 1px solid #f0b8b2;
  background: #fff9f8;
  border-radius: var(--radius);
  padding: 16px;
  display: grid;
  gap: 12px;
}

.settings-service-row {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 14px;
}

.compact-panel {
  padding: 16px;
}

.compact-panel .panel-header {
  margin-bottom: 0;
}

.compact-panel .section-note {
  margin-top: 3px;
}

.compact-danger-zone {
  align-items: end;
  grid-template-columns: minmax(0, 1fr) auto;
  margin-top: 12px;
  padding: 12px;
}

.compact-danger-zone .button {
  min-height: 46px;
}

.mail-status-row {
  display: flex;
  align-items: center;
  gap: 10px;
  flex-wrap: wrap;
  border-top: 1px solid var(--line);
  padding-top: 12px;
}

.mail-oauth-card {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: #f8fbff;
  padding: 14px;
  display: grid;
  gap: 10px;
}

.copy-row,
.mail-test-row {
  display: flex;
  align-items: end;
  gap: 10px;
}

.copy-row input,
.mail-test-row .field {
  flex: 1 1 auto;
}

.copy-row input {
  min-width: 0;
  height: 48px;
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 0 12px;
  background: #fff;
  color: var(--muted);
  font: inherit;
}

.mail-test-row {
  border-top: 1px solid var(--line);
  padding-top: 12px;
}

.template-variable-list {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.template-variable {
  border: 1px solid var(--line);
  border-radius: 999px;
  background: #f8fbff;
  color: var(--muted);
  font-size: 0.86rem;
  padding: 6px 10px;
}

.template-variable strong {
  color: var(--blue-strong);
}

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

.mail-template-card {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  display: grid;
  gap: 12px;
  padding: 14px;
}

.mail-template-card h3 {
  margin: 0 0 4px;
}

.template-helper-card {
  margin-top: 14px;
}

.password-modal {
  width: min(560px, 100%);
}

.password-modal-body {
  display: grid;
  gap: 16px;
}

.password-input-control {
  position: relative;
  display: block;
}

.password-input-control input {
  width: 100%;
  padding-right: 48px;
}

.password-toggle {
  position: absolute;
  top: 50%;
  right: 6px;
  width: 34px;
  height: 34px;
  border: 0;
  border-radius: 8px;
  background: transparent;
  color: var(--muted);
  display: grid;
  place-items: center;
  transform: translateY(-50%);
}

.password-toggle:hover,
.password-toggle:focus-visible {
  color: var(--blue);
  background: #eef4ff;
  outline: none;
}

.password-toggle i[data-lucide] {
  width: 19px;
  height: 19px;
}

.password-help {
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: #fbfcfe;
  padding: 14px;
  display: grid;
  gap: 10px;
}

.password-help ul {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 7px;
}

.password-rule {
  display: flex;
  align-items: center;
  gap: 8px;
  color: var(--muted);
  font-size: 0.9rem;
  font-weight: 650;
}

.password-rule i[data-lucide] {
  width: 17px;
  height: 17px;
}

.password-rule.is-ok {
  color: var(--green);
}

.password-rule.is-missing {
  color: var(--muted);
}

.modal-backdrop {
  position: fixed;
  inset: 0;
  background: rgba(12, 20, 32, 0.45);
  z-index: 20;
  display: grid;
  place-items: center;
  padding: 20px;
}

.modal-card {
  width: min(720px, 100%);
  max-height: min(780px, calc(100vh - 40px));
  overflow: auto;
  box-shadow: var(--shadow);
}

.modal-header,
.modal-footer {
  padding: 16px 18px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
}

.modal-header {
  border-bottom: 1px solid var(--line);
}

.modal-header h2 {
  margin: 0;
  font-size: 1rem;
}

.modal-body {
  padding: 18px;
}

.modal-footer {
  border-top: 1px solid var(--line);
  justify-content: flex-end;
}

.toast {
  position: fixed;
  right: 20px;
  bottom: 20px;
  z-index: 30;
  padding: 13px 14px;
  box-shadow: var(--shadow);
  display: flex;
  gap: 10px;
  align-items: center;
  max-width: min(420px, calc(100vw - 40px));
}

.empty {
  border: 1px dashed var(--line-strong);
  border-radius: var(--radius);
  min-height: 130px;
  display: grid;
  place-items: center;
  color: var(--muted);
  background: #fff;
  text-align: center;
  padding: 20px;
}

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

i[data-lucide] {
  width: 18px;
  height: 18px;
  stroke-width: 2;
}

.brand-mark i[data-lucide] {
  width: 21px;
  height: 21px;
}

@media (max-width: 1100px) {
  .grid.stats,
  .appointment-grid,
  .role-card-grid,
  .slot-picker,
  .parent-slot-picker {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .grid.two {
    grid-template-columns: 1fr;
  }

  .generator-layout {
    grid-template-columns: 1fr;
  }

  .generator-preview-list {
    max-height: 240px;
  }

  .topbar {
    align-items: flex-start;
    padding-top: 14px;
    padding-bottom: 14px;
  }

  .teacher-topbar-controls {
    justify-content: flex-start;
    flex-wrap: wrap;
  }
}

@media (max-width: 820px) {
  .app-shell {
    grid-template-columns: 1fr;
  }

  .sidebar {
    position: static;
    height: auto;
    padding: 14px;
    border-right: 0;
    border-bottom: 1px solid var(--line);
  }

  .nav {
    grid-auto-flow: column;
    overflow-x: auto;
    padding-bottom: 2px;
  }

  .nav-button {
    width: auto;
    white-space: nowrap;
  }

  .report-download-row {
    align-items: stretch;
    flex-direction: column;
  }

  .copy-row,
  .mail-test-row {
    align-items: stretch;
    flex-direction: column;
  }

  .settings-service-row,
  .template-grid {
    grid-template-columns: 1fr;
  }

  .compact-danger-zone {
    align-items: stretch;
    grid-template-columns: 1fr;
  }

  .report-download-row .button {
    justify-content: center;
  }

  .generator-actions {
    justify-content: stretch;
  }

  .generator-actions .button {
    width: 100%;
  }

  .generator-preview-item {
    grid-template-columns: 18px minmax(0, 1fr);
    border-radius: var(--radius);
    padding: 8px 10px;
  }

  .generator-preview-item small {
    grid-column: 2;
  }

  .sidebar-footer {
    display: none;
  }

  .topbar {
    position: static;
    padding: 16px;
    align-items: flex-start;
  }

  .parent-topbar {
    position: static;
    align-items: flex-start;
    padding: 16px;
  }

  .parent-main {
    padding: 16px;
  }

  .content {
    padding: 16px;
  }

  .parent-content {
    padding: 0;
  }

  .parent-booking-modal .parent-modal-form {
    grid-template-columns: 1fr;
  }

  .parent-booking-modal.modal-card {
    max-height: min(780px, calc(100vh - 40px));
    overflow: auto;
  }

  .parent-date-picker-main {
    grid-template-columns: 1fr;
  }

  .parent-date-summary {
    align-items: flex-start;
    justify-content: flex-start;
    text-align: left;
  }

  .grid.stats,
  .grid.two,
  .appointment-grid,
  .form-grid,
  .form-grid.three,
  .role-card-grid,
  .slot-picker,
  .parent-slot-picker {
    grid-template-columns: 1fr;
  }

	  .section-header,
	  .panel-header,
	  .parent-picker-header,
	  .parent-step-heading,
	  .parent-slot-actions,
	  .toolbar {
	    align-items: stretch;
	    flex-direction: column;
	  }

  .slot-day {
    grid-template-columns: 1fr;
  }

  .teacher-day-card {
    grid-template-columns: 1fr;
  }

  .teacher-appointment-main {
    grid-template-columns: 1fr 1fr;
  }

  .parent-teacher-item {
    grid-template-columns: minmax(0, 1fr);
  }

  .parent-teacher-item i[data-lucide] {
    display: none;
  }

  .parent-slot-date {
    align-items: flex-start;
    flex-direction: column;
  }
}

@media (max-width: 540px) {
  .topbar {
    flex-direction: column;
  }

  .parent-topbar,
  .parent-heading {
    align-items: stretch;
    flex-direction: column;
  }

  .topbar-actions,
  .teacher-topbar-controls,
  .teacher-topbar-buttons,
	  .toolbar-left,
	  .toolbar-right,
	  .inline-controls,
	  .parent-form-actions {
	    width: 100%;
	  }

  .teacher-topbar-field {
    width: 100%;
  }

  .button,
  .search-wrap,
  .field {
    width: 100%;
  }

  .teacher-appointment-main {
    grid-template-columns: 1fr;
  }

  .segmented {
    width: 100%;
    grid-auto-columns: 1fr;
  }
}