.edutech-portal {
  --edutech-color-primary: #2563eb;
  --edutech-color-primary-strong: #1d4ed8;
  --edutech-color-ink: #0f172a;
  --edutech-color-muted: #64748b;
  --edutech-color-surface: #ffffff;
  --edutech-color-subtle: #f8fafc;
  --edutech-color-border: #e2e8f0;
  --edutech-color-success: #15803d;
  --edutech-color-warning: #a16207;
  --edutech-color-danger: #b91c1c;
  --edutech-radius-sm: 0.375rem;
  --edutech-radius-md: 0.625rem;
  --edutech-radius-lg: 0.875rem;
  --edutech-shadow-sm: 0 1px 2px rgba(15, 23, 42, 0.06);
  --edutech-shadow-md: 0 8px 24px rgba(15, 23, 42, 0.08);
  --edutech-space-1: 0.25rem;
  --edutech-space-2: 0.5rem;
  --edutech-space-3: 0.75rem;
  --edutech-space-4: 1rem;
  --edutech-space-6: 1.5rem;
  --edutech-space-8: 2rem;
  color: var(--edutech-color-ink);
}

.edutech-portal *,
.edutech-portal *::before,
.edutech-portal *::after {
  box-sizing: border-box;
}

.edutech-portal :where(a, button, input, select, textarea):focus-visible {
  outline: 3px solid rgba(37, 99, 235, 0.35);
  outline-offset: 2px;
}

.edutech-portal .edutech-shell {
  display: grid;
  grid-template-columns: minmax(13rem, 16rem) minmax(0, 1fr);
  min-height: 24rem;
  background: var(--edutech-color-subtle);
  border: 1px solid var(--edutech-color-border);
  border-radius: var(--edutech-radius-lg);
  overflow: hidden;
}

.edutech-portal-frame {
  width: 100%;
  margin: 0 auto;
}

.edutech-portal-frame__content {
  width: 100%;
}

.edutech-portal-frame--embedded {
  max-width: 76rem;
}

.edutech-portal-frame--full-width {
  max-width: none;
}

.edutech-portal-frame--full-width .edutech-portal-frame__content {
  padding-inline: clamp(1rem, 4vw, 3rem);
}

.edutech-portal-frame--standalone {
  max-width: 76rem;
  min-height: 70vh;
  padding: clamp(1rem, 4vw, 3rem);
  background: var(--edutech-color-subtle);
}

.edutech-portal .edutech-sidebar {
  padding: var(--edutech-space-6);
  background: var(--edutech-color-surface);
  border-right: 1px solid var(--edutech-color-border);
}

.edutech-portal .edutech-main {
  min-width: 0;
  padding: clamp(var(--edutech-space-4), 3vw, var(--edutech-space-8));
}

.edutech-portal .edutech-nav {
  display: grid;
  gap: var(--edutech-space-2);
  margin: 0;
  padding: 0;
  list-style: none;
}

.edutech-portal .edutech-nav a {
  display: flex;
  align-items: center;
  min-height: 2.75rem;
  padding: 0.625rem 0.75rem;
  color: var(--edutech-color-muted);
  border-radius: var(--edutech-radius-sm);
  text-decoration: none;
}

.edutech-portal .edutech-nav a:hover,
.edutech-portal .edutech-nav a[aria-current="page"] {
  color: var(--edutech-color-primary-strong);
  background: #eff6ff;
}

.edutech-portal .edutech-grid {
  display: grid;
  grid-template-columns: repeat(12, minmax(0, 1fr));
  gap: var(--edutech-space-6);
}

.edutech-portal .edutech-col-12 { grid-column: span 12; }
.edutech-portal .edutech-col-6 { grid-column: span 6; }
.edutech-portal .edutech-col-4 { grid-column: span 4; }
.edutech-portal .edutech-col-3 { grid-column: span 3; }

.edutech-portal .edutech-card {
  min-width: 0;
  padding: var(--edutech-space-6);
  background: var(--edutech-color-surface);
  border: 1px solid var(--edutech-color-border);
  border-radius: var(--edutech-radius-md);
  box-shadow: var(--edutech-shadow-sm);
}

.edutech-portal .edutech-card__title {
  margin: 0 0 var(--edutech-space-2);
  color: var(--edutech-color-ink);
  font-size: 1.125rem;
  line-height: 1.4;
}

.edutech-portal .edutech-card__meta {
  margin: 0;
  color: var(--edutech-color-muted);
  font-size: 0.875rem;
}

.edutech-portal .edutech-button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 2.75rem;
  padding: 0.625rem 1rem;
  color: #fff;
  background: var(--edutech-color-primary);
  border: 1px solid var(--edutech-color-primary);
  border-radius: var(--edutech-radius-sm);
  cursor: pointer;
  font: inherit;
  font-weight: 600;
  text-decoration: none;
  transition: background-color 160ms ease, border-color 160ms ease, box-shadow 160ms ease;
}

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

.edutech-portal .edutech-button--secondary {
  color: var(--edutech-color-ink);
  background: var(--edutech-color-surface);
  border-color: var(--edutech-color-border);
}

.edutech-portal .edutech-button--danger { background: var(--edutech-color-danger); border-color: var(--edutech-color-danger); }

.edutech-portal .edutech-field {
  display: grid;
  gap: var(--edutech-space-2);
  margin-bottom: var(--edutech-space-4);
}

.edutech-portal .edutech-field label {
  color: var(--edutech-color-ink);
  font-weight: 600;
}

.edutech-portal .edutech-field :where(input, select, textarea) {
  width: 100%;
  min-height: 2.75rem;
  padding: 0.625rem 0.75rem;
  color: var(--edutech-color-ink);
  background: var(--edutech-color-surface);
  border: 1px solid #cbd5e1;
  border-radius: var(--edutech-radius-sm);
  font: inherit;
}

.edutech-portal .edutech-table-wrap { overflow-x: auto; }
.edutech-portal .edutech-table { width: 100%; border-collapse: collapse; }
.edutech-portal .edutech-table :where(th, td) { padding: 0.75rem; text-align: left; border-bottom: 1px solid var(--edutech-color-border); vertical-align: top; }
.edutech-portal .edutech-table th { color: var(--edutech-color-muted); font-size: 0.8125rem; letter-spacing: 0.02em; text-transform: uppercase; }

.edutech-portal .edutech-alert {
  padding: var(--edutech-space-4);
  border: 1px solid var(--edutech-color-border);
  border-left-width: 0.25rem;
  border-radius: var(--edutech-radius-sm);
  background: var(--edutech-color-surface);
}
.edutech-portal .edutech-alert--success { border-left-color: var(--edutech-color-success); }
.edutech-portal .edutech-alert--warning { border-left-color: var(--edutech-color-warning); }
.edutech-portal .edutech-alert--error { border-left-color: var(--edutech-color-danger); }

.edutech-portal .edutech-badge {
  display: inline-flex;
  align-items: center;
  min-height: 1.5rem;
  padding: 0.125rem 0.5rem;
  color: var(--edutech-color-muted);
  background: #f1f5f9;
  border-radius: 999px;
  font-size: 0.75rem;
  font-weight: 700;
}

.edutech-portal .edutech-state {
  display: grid;
  place-items: center;
  min-height: 10rem;
  padding: var(--edutech-space-8);
  color: var(--edutech-color-muted);
  text-align: center;
  border: 1px dashed var(--edutech-color-border);
  border-radius: var(--edutech-radius-md);
}

.edutech-portal .edutech-auth-card {
  width: min(100%, 30rem);
  margin: clamp(1rem, 5vw, 4rem) auto;
  padding: clamp(1.25rem, 4vw, 2rem);
  background: var(--edutech-color-surface);
  border: 1px solid var(--edutech-color-border);
  border-radius: var(--edutech-radius-lg);
  box-shadow: var(--edutech-shadow-md);
}

.edutech-portal .edutech-auth-card__title {
  margin: 0 0 var(--edutech-space-6);
  color: var(--edutech-color-ink);
  font-size: clamp(1.35rem, 3vw, 1.75rem);
}

.edutech-portal .edutech-auth-card #edutech-login-form {
  display: grid;
  gap: var(--edutech-space-3);
}

.edutech-portal .edutech-auth-card #edutech-login-form label {
  color: var(--edutech-color-ink);
  font-weight: 600;
}

.edutech-portal .edutech-auth-card #edutech-login-form input[type="text"],
.edutech-portal .edutech-auth-card #edutech-login-form input[type="password"] {
  width: 100%;
  min-height: 2.75rem;
  padding: 0.625rem 0.75rem;
  border: 1px solid #cbd5e1;
  border-radius: var(--edutech-radius-sm);
  font: inherit;
}

.edutech-portal .edutech-auth-card #edutech-login-submit {
  min-height: 2.75rem;
  padding: 0.625rem 1rem;
  color: #fff;
  background: var(--edutech-color-primary);
  border: 1px solid var(--edutech-color-primary);
  border-radius: var(--edutech-radius-sm);
  cursor: pointer;
  font: inherit;
  font-weight: 700;
}

.edutech-portal .edutech-auth-card > a {
  display: inline-block;
  margin-top: var(--edutech-space-4);
  color: var(--edutech-color-primary-strong);
}

.edutech-portal .edutech-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;
}

@media (max-width: 900px) {
  .edutech-portal .edutech-shell { grid-template-columns: 1fr; }
  .edutech-portal .edutech-sidebar { border-right: 0; border-bottom: 1px solid var(--edutech-color-border); }
  .edutech-portal .edutech-nav { grid-template-columns: repeat(auto-fit, minmax(9rem, 1fr)); }
  .edutech-portal .edutech-col-4,
  .edutech-portal .edutech-col-3 { grid-column: span 6; }
}

@media (max-width: 600px) {
  .edutech-portal .edutech-grid { gap: var(--edutech-space-4); }
  .edutech-portal .edutech-col-6,
  .edutech-portal .edutech-col-4,
  .edutech-portal .edutech-col-3 { grid-column: span 12; }
  .edutech-portal .edutech-card { padding: var(--edutech-space-4); }
}

@media (prefers-reduced-motion: reduce) {
  .edutech-portal *,
  .edutech-portal *::before,
  .edutech-portal *::after { scroll-behavior: auto !important; transition-duration: 0.01ms !important; animation-duration: 0.01ms !important; }
}