:root {
  color-scheme: light;
  --bg: #f6f7fb;
  --surface: #ffffff;
  --surface-soft: #eef7f4;
  --ink: #172033;
  --muted: #657086;
  --line: #dbe1ea;
  --brand: #0f766e;
  --brand-strong: #115e59;
  --blue: #2563eb;
  --amber: #b7791f;
  --rose: #be123c;
  --shadow: 0 18px 45px rgba(23, 32, 51, 0.12);
}

* {
  box-sizing: border-box;
}

html {
  min-height: 100%;
  background: var(--bg);
}

body {
  margin: 0;
  min-height: 100vh;
  font-family: "Cairo", "Tajawal", system-ui, sans-serif;
  color: var(--ink);
  background:
    linear-gradient(120deg, rgba(15, 118, 110, 0.10), transparent 34%),
    linear-gradient(300deg, rgba(37, 99, 235, 0.09), transparent 31%),
    var(--bg);
}

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

a {
  color: inherit;
  text-decoration: none;
}

.teacher-auth-page {
  display: grid;
  place-items: center;
  padding: 28px;
}

.teacher-login {
  width: min(1120px, 100%);
  display: grid;
  grid-template-columns: minmax(320px, 440px) 1fr;
  gap: 20px;
  align-items: stretch;
}

.teacher-login-card,
.teacher-login-panel,
.teacher-card,
.teacher-table-panel,
.modal-card {
  border: 1px solid rgba(219, 225, 234, 0.9);
  background: rgba(255, 255, 255, 0.94);
  border-radius: 8px;
  box-shadow: var(--shadow);
}

.teacher-login-card {
  padding: 30px;
}

.teacher-login-panel {
  padding: 34px;
  display: grid;
  align-content: center;
  gap: 20px;
  background:
    linear-gradient(135deg, rgba(15, 118, 110, 0.94), rgba(37, 99, 235, 0.84)),
    #0f766e;
  color: #fff;
  overflow: hidden;
  position: relative;
}

.teacher-login-panel::after {
  content: "";
  position: absolute;
  inset-inline-start: 8%;
  inset-block-end: -34px;
  width: 220px;
  height: 110px;
  border: 1px solid rgba(255, 255, 255, 0.35);
  border-radius: 8px;
  transform: rotate(-9deg);
}

.teacher-brand,
.sidebar-brand {
  display: inline-flex;
  align-items: center;
  gap: 12px;
}

.brand-mark {
  display: grid;
  place-items: center;
  width: 46px;
  height: 46px;
  border-radius: 8px;
  color: #fff;
  background: linear-gradient(135deg, var(--brand), var(--blue));
  font-weight: 900;
}

.brand-mark.small {
  width: 38px;
  height: 38px;
  font-size: 0.9rem;
}

.teacher-brand strong,
.sidebar-brand strong {
  display: block;
  font-size: 1rem;
}

.teacher-brand small,
.sidebar-brand span,
.teacher-muted {
  color: var(--muted);
}

.teacher-login-panel .teacher-brand small {
  color: rgba(255, 255, 255, 0.75);
}

.login-copy {
  margin: 34px 0 24px;
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  color: var(--brand-strong);
  font-weight: 800;
  font-size: 0.84rem;
}

.teacher-login-panel .eyebrow {
  color: rgba(255, 255, 255, 0.82);
}

h1,
h2,
h3 {
  margin: 0;
  line-height: 1.35;
}

h1 {
  margin-top: 10px;
  font-size: clamp(2rem, 5vw, 3.7rem);
  font-weight: 900;
}

.login-copy p,
.teacher-login-panel p {
  margin: 12px 0 0;
  color: var(--muted);
  line-height: 1.8;
}

.teacher-login-panel p {
  color: rgba(255, 255, 255, 0.82);
}

.form-label {
  display: block;
  margin: 14px 0 8px;
  font-weight: 800;
}

.remember-login {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  margin: 10px 0 2px;
  color: var(--muted);
  font-size: 0.9rem;
  font-weight: 800;
  cursor: pointer;
}

.remember-login input {
  width: 16px;
  height: 16px;
  margin: 0;
  accent-color: var(--brand);
  cursor: pointer;
}

.input-wrap {
  display: flex;
  align-items: center;
  gap: 10px;
  border: 1px solid var(--line);
  background: #fff;
  border-radius: 8px;
  padding: 0 12px;
}

.input-wrap i {
  color: var(--brand);
}

.form-control,
.form-select,
.form-textarea {
  width: 100%;
  min-height: 44px;
  border: 1px solid var(--line);
  border-radius: 8px;
  background: #fff;
  color: var(--ink);
  padding: 10px 12px;
  outline: none;
}

.input-wrap .form-control {
  border: 0;
  padding-inline: 0;
}

.form-textarea {
  min-height: 104px;
  resize: vertical;
}

.form-control:focus,
.form-select:focus,
.form-textarea:focus {
  border-color: var(--brand);
  box-shadow: 0 0 0 3px rgba(15, 118, 110, 0.14);
}

.btn {
  min-height: 40px;
  border: 1px solid transparent;
  border-radius: 8px;
  padding: 9px 15px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  cursor: pointer;
  font-weight: 800;
  transition: transform 0.15s ease, background 0.15s ease, border-color 0.15s ease;
}

.btn:hover {
  transform: translateY(-1px);
}

.btn-primary {
  background: var(--brand);
  border-color: var(--brand);
  color: #fff;
}

.btn-primary:hover {
  background: var(--brand-strong);
}

.btn-outline {
  background: #fff;
  color: var(--ink);
  border-color: var(--line);
}

.btn-danger {
  background: var(--rose);
  border-color: var(--rose);
  color: #fff;
}

.btn-sm {
  min-height: 34px;
  padding: 6px 10px;
  font-size: 0.88rem;
}

.w-100 {
  width: 100%;
}

.mt-3 {
  margin-top: 16px;
}

.mt-4 {
  margin-top: 22px;
}

.teacher-alert {
  padding: 12px 14px;
  border-radius: 8px;
  background: #fff4f4;
  color: #9f1239;
  border: 1px solid #fecdd3;
  margin-bottom: 16px;
}

.d-none {
  display: none !important;
}

.login-stats {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 12px;
  margin-top: 18px;
}

.login-stat {
  background: rgba(255, 255, 255, 0.14);
  border: 1px solid rgba(255, 255, 255, 0.24);
  border-radius: 8px;
  padding: 14px;
}

.login-stat strong {
  display: block;
  font-size: 1.5rem;
}

.teacher-shell {
  min-height: 100vh;
  display: grid;
  grid-template-columns: 280px minmax(0, 1fr);
}

.teacher-sidebar {
  position: sticky;
  top: 0;
  height: 100vh;
  overflow-y: auto;
  border-inline-start: 1px solid var(--line);
  background: #fff;
  padding: 18px 14px;
}

.teacher-sidebar .sidebar-brand {
  padding: 6px 6px 18px;
}

.teacher-menu {
  display: grid;
  gap: 6px;
  margin-top: 10px;
}

.teacher-menu button,
.icon-btn {
  border: 0;
  background: transparent;
  color: var(--ink);
  cursor: pointer;
}

.teacher-menu button {
  width: 100%;
  min-height: 42px;
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 9px 10px;
  border-radius: 8px;
  text-align: start;
  font-weight: 800;
}

.teacher-menu button:hover,
.teacher-menu button.active {
  background: var(--surface-soft);
  color: var(--brand-strong);
}

.teacher-workspace {
  min-width: 0;
  display: grid;
  grid-template-rows: auto 1fr;
}

.teacher-topbar {
  min-height: 72px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
  padding: 16px 24px;
  background: rgba(246, 247, 251, 0.88);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid rgba(219, 225, 234, 0.75);
  position: sticky;
  top: 0;
  z-index: 5;
}

.page-title h2 {
  font-size: 1.35rem;
  font-weight: 900;
}

.page-title span {
  display: block;
  margin-top: 3px;
  color: var(--muted);
  font-size: 0.9rem;
}

.topbar-actions {
  display: flex;
  align-items: center;
  gap: 8px;
}

.icon-btn {
  width: 40px;
  height: 40px;
  display: grid;
  place-items: center;
  border-radius: 8px;
  background: #fff;
  border: 1px solid var(--line);
}

.teacher-content {
  padding: 24px;
  display: grid;
  gap: 18px;
}

.teacher-grid {
  display: grid;
  grid-template-columns: repeat(12, minmax(0, 1fr));
  gap: 14px;
}

.teacher-card,
.teacher-table-panel {
  padding: 18px;
  box-shadow: none;
}

.span-3 {
  grid-column: span 3;
}

.span-4 {
  grid-column: span 4;
}

.span-6 {
  grid-column: span 6;
}

.span-8 {
  grid-column: span 8;
}

.span-12 {
  grid-column: span 12;
}

.metric {
  display: grid;
  gap: 8px;
}

.metric i {
  width: 38px;
  height: 38px;
  display: grid;
  place-items: center;
  border-radius: 8px;
  background: var(--surface-soft);
  color: var(--brand);
}

.metric strong {
  font-size: 1.45rem;
  font-weight: 900;
}

.teacher-profile-head {
  display: flex;
  gap: 16px;
  align-items: center;
}

.avatar {
  width: 76px;
  height: 76px;
  border-radius: 8px;
  object-fit: cover;
  background: linear-gradient(135deg, var(--brand), var(--blue));
  color: #fff;
  display: grid;
  place-items: center;
  font-size: 1.7rem;
  font-weight: 900;
}

.toolbar {
  display: flex;
  align-items: end;
  justify-content: space-between;
  gap: 12px;
  flex-wrap: wrap;
}

.filters {
  display: flex;
  align-items: end;
  gap: 8px;
  flex-wrap: wrap;
}

.filters label {
  display: grid;
  gap: 6px;
  color: var(--muted);
  font-size: 0.84rem;
  font-weight: 800;
}

.filters .form-control,
.filters .form-select {
  min-height: 38px;
  min-width: 124px;
}

.table-wrap {
  width: 100%;
  overflow: auto;
}

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

th,
td {
  padding: 12px 10px;
  border-bottom: 1px solid var(--line);
  text-align: start;
  vertical-align: top;
}

th {
  color: #334155;
  font-size: 0.85rem;
  background: #f8fafc;
}

.badge {
  display: inline-flex;
  align-items: center;
  border-radius: 999px;
  padding: 4px 9px;
  font-size: 0.78rem;
  font-weight: 900;
  background: #e8eef7;
  color: #334155;
  white-space: nowrap;
}

.badge.success {
  background: #dff7ea;
  color: #047857;
}

.badge.warning {
  background: #fff3cd;
  color: #92400e;
}

.badge.danger {
  background: #ffe4e6;
  color: var(--rose);
}

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

.detail-item {
  border: 1px solid var(--line);
  border-radius: 8px;
  padding: 12px;
  background: #fff;
}

.detail-item span {
  display: block;
  color: var(--muted);
  font-size: 0.83rem;
  margin-bottom: 6px;
}

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

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

.print-surface {
  display: none;
}

.modal-backdrop {
  position: fixed;
  inset: 0;
  z-index: 30;
  display: grid;
  place-items: center;
  background: rgba(23, 32, 51, 0.38);
  padding: 18px;
}

.modal-card {
  width: min(520px, 100%);
  padding: 22px;
}

.modal-actions {
  display: flex;
  gap: 8px;
  justify-content: flex-end;
  margin-top: 18px;
}

.empty {
  padding: 24px;
  text-align: center;
  color: var(--muted);
}

.toast-host {
  position: fixed;
  inset-block-end: 18px;
  inset-inline-start: 18px;
  z-index: 60;
  display: grid;
  gap: 8px;
  max-width: min(360px, calc(100vw - 36px));
}

.toast-host .teacher-alert {
  margin: 0;
  background: #ecfdf5;
  border-color: #a7f3d0;
  color: #065f46;
  box-shadow: var(--shadow);
}

.loading {
  min-height: 180px;
  display: grid;
  place-items: center;
  color: var(--muted);
}

.sidebar-backdrop {
  display: none;
}

@media (max-width: 1024px) {
  .teacher-login,
  .teacher-shell {
    grid-template-columns: 1fr;
  }

  .teacher-sidebar {
    position: fixed;
    inset-block: 0;
    inset-inline-start: 0;
    width: min(300px, 86vw);
    transform: translateX(105%);
    transition: transform 0.2s ease;
    z-index: 20;
  }

  body.sidebar-open .teacher-sidebar {
    transform: translateX(0);
  }

  body.sidebar-open .sidebar-backdrop {
    display: block;
    position: fixed;
    inset: 0;
    background: rgba(23, 32, 51, 0.28);
    z-index: 19;
  }

  .span-3,
  .span-4,
  .span-6,
  .span-8 {
    grid-column: span 6;
  }
}

@media (max-width: 680px) {
  .teacher-auth-page {
    padding: 16px;
  }

  .teacher-login-panel {
    display: none;
  }

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

  .topbar-actions {
    flex-wrap: wrap;
    justify-content: flex-end;
  }

  .teacher-content {
    padding: 14px;
  }

  .span-3,
  .span-4,
  .span-6,
  .span-8,
  .span-12 {
    grid-column: span 12;
  }

  .detail-list,
  .form-grid,
  .login-stats {
    grid-template-columns: 1fr;
  }

  .teacher-profile-head {
    align-items: flex-start;
  }
}

@media print {
  @page {
    size: A4;
    margin: 12mm;
  }

  body {
    background: #fff !important;
    color: #111827;
  }

  .teacher-sidebar,
  .teacher-topbar,
  .toolbar,
  .filters,
  .btn,
  .icon-btn,
  .sidebar-backdrop,
  .no-print {
    display: none !important;
  }

  .teacher-shell,
  .teacher-workspace,
  .teacher-content {
    display: block !important;
    padding: 0 !important;
  }

  .teacher-card,
  .teacher-table-panel {
    box-shadow: none !important;
    border: 0 !important;
    padding: 0 !important;
  }

  .print-surface {
    display: block !important;
  }

  .print-hidden {
    display: none !important;
  }

  table {
    min-width: 0;
    page-break-inside: auto;
  }

  tr {
    page-break-inside: avoid;
  }
}