* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: Inter, system-ui, Arial, sans-serif;
  background:
    radial-gradient(circle at top left, rgba(250, 204, 21, 0.14), transparent 30%),
    radial-gradient(circle at top right, rgba(37, 99, 235, 0.12), transparent 30%),
    #f5f3ff;
  color: #111827;
}

.admin-kids-shell {
  min-height: 100vh;
  display: grid;
  grid-template-columns: 270px 1fr;
}

.admin-kids-sidebar {
  padding: 22px;
  background: linear-gradient(180deg, #4c1d95, #2563eb);
  color: white;
  position: sticky;
  top: 0;
  height: 100vh;
}

.admin-brand {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 28px;
}

.admin-brand img {
  width: 110px;
  height: 36px;
  object-fit: contain;
  background: white;
  padding: 5px;
  border-radius: 12px;
}

.admin-brand span {
  font-weight: 900;
}

.admin-kids-sidebar nav {
  display: grid;
  gap: 10px;
}

.admin-kids-sidebar a {
  color: rgba(255,255,255,0.86);
  text-decoration: none;
  padding: 12px 14px;
  border-radius: 16px;
  font-weight: 800;
}

.admin-kids-sidebar a:hover,
.admin-kids-sidebar a.active {
  background: rgba(255,255,255,0.16);
  color: white;
}

.admin-kids-main {
  padding: 28px;
}

.admin-kids-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 24px;
}

.admin-kids-header p {
  margin: 0;
  color: #6d28d9;
  font-weight: 900;
}

.admin-kids-header h1 {
  margin: 4px 0 0;
  font-size: 42px;
  line-height: 1;
}

.admin-kids-header button,
.builder-card button {
  border: 0;
  padding: 12px 18px;
  border-radius: 999px;
  color: white;
  background: linear-gradient(135deg, #6d28d9, #2563eb);
  font-weight: 900;
  cursor: pointer;
}

.builder-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 22px;
}

.bottom-grid {
  margin-top: 22px;
}

.builder-card {
  background: rgba(255,255,255,0.9);
  border: 1px solid rgba(109, 40, 217, 0.12);
  border-radius: 28px;
  padding: 22px;
  box-shadow: 0 18px 50px rgba(76, 29, 149, 0.08);
}

.builder-card h2 {
  margin: 0 0 18px;
  color: #4c1d95;
  font-size: 24px;
}

label {
  display: grid;
  gap: 7px;
  margin-bottom: 14px;
  color: #344054;
  font-weight: 800;
}

input,
select,
textarea {
  width: 100%;
  border: 1px solid rgba(109, 40, 217, 0.16);
  border-radius: 16px;
  padding: 12px 14px;
  outline: none;
  font: inherit;
  background: white;
}

input:focus,
select:focus,
textarea:focus {
  border-color: #6d28d9;
  box-shadow: 0 0 0 4px rgba(109, 40, 217, 0.08);
}

.two-col {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 14px;
}

.form-actions {
  display: flex;
  gap: 10px;
}

button.secondary {
  background: #ede9fe;
  color: #6d28d9;
}

.course-list {
  display: grid;
  gap: 12px;
  max-height: 610px;
  overflow: auto;
}

.course-item {
  padding: 16px;
  border-radius: 20px;
  background: #f8fafc;
  border: 1px solid rgba(109, 40, 217, 0.1);
}

.course-item h3 {
  margin: 0;
  color: #4c1d95;
}

.course-item p {
  margin: 8px 0;
  color: #667085;
}

.course-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 7px;
  margin: 10px 0;
}

.course-tags span {
  padding: 6px 9px;
  border-radius: 999px;
  background: #ede9fe;
  color: #6d28d9;
  font-size: 12px;
  font-weight: 900;
}

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

.course-actions button {
  padding: 8px 12px;
  font-size: 12px;
}

.course-actions button.danger {
  background: #fee2e2;
  color: #dc2626;
}

.structure-box {
  display: grid;
  gap: 14px;
}

.module-box {
  padding: 16px;
  border-radius: 20px;
  background: #f8fafc;
  border: 1px solid rgba(109, 40, 217, 0.1);
}

.module-box h3 {
  margin: 0 0 10px;
  color: #4c1d95;
}

.lesson-row {
  padding: 10px 12px;
  border-radius: 14px;
  background: white;
  margin-top: 8px;
  display: flex;
  justify-content: space-between;
  gap: 10px;
}

.lesson-row button,
.module-box button {
  padding: 7px 10px;
  font-size: 12px;
  background: #fee2e2;
  color: #dc2626;
}

@media (max-width: 980px) {
  .admin-kids-shell {
    grid-template-columns: 1fr;
  }

  .admin-kids-sidebar {
    position: static;
    height: auto;
  }

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

@media (max-width: 640px) {
  .admin-kids-main {
    padding: 18px;
  }

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

  .admin-kids-header {
    align-items: flex-start;
    flex-direction: column;
    gap: 14px;
  }

  .admin-kids-header h1 {
    font-size: 32px;
  }
}