/* =========================================================
   Shared teacher application page structure
   ---------------------------------------------------------
   Deliberately class-scoped: these rules are applied only by
   teacher-facing Core and plugin views.
   ========================================================= */

.nn-teacher-page {
  display: grid;
  gap: 22px;
  width: min(1240px, 100%);
  margin: 0 auto;
  padding: 18px 0 40px;
}

.nn-teacher-page--wide {
  width: 100%;
  max-width: none;
}

.nn-teacher-page-header {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 24px;
  padding: 0 2px 20px;
  border: 0;
  border-bottom: 1px solid var(--nn-color-border, #e5e7eb);
  border-radius: 0;
  background: transparent;
  box-shadow: none;
}

.nn-teacher-page-header > div:first-child {
  min-width: 0;
}

.nn-teacher-page-header h1 {
  margin: 0;
  color: #0f172a;
  font-size: clamp(1.75rem, 2vw, 2.1rem);
  font-weight: 750;
  letter-spacing: -0.035em;
  line-height: 1.1;
}

.nn-teacher-page-header p:not([class*="eyebrow"]),
.nn-teacher-page-description {
  max-width: 780px;
  margin: 7px 0 0;
  color: var(--nn-color-text-muted, #667085);
  font-size: 0.96rem;
  line-height: 1.45;
}

.nn-teacher-page-eyebrow,
.nn-teacher-page-header [class*="eyebrow"] {
  margin: 0 0 6px;
  color: var(--nn-color-accent, #0f9fa8);
  font-size: 0.74rem;
  font-weight: 750;
  letter-spacing: 0.07em;
  text-transform: uppercase;
}

.nn-teacher-page-actions {
  display: flex;
  align-items: center;
  justify-content: flex-end;
  gap: 10px;
  flex-wrap: wrap;
}

.nn-teacher-panel {
  min-width: 0;
  padding: 20px;
  border: 1px solid var(--nn-color-border, #e5e7eb);
  border-radius: 8px;
  background: #fff;
  box-shadow: none;
}

.nn-teacher-page .nn-teacher-form label,
.nn-teacher-page .nn-teacher-form legend {
  color: #475467;
  font-size: 0.82rem;
  font-weight: 650;
}

.nn-teacher-page .nn-teacher-form :where(input:not([type="checkbox"]):not([type="radio"]), select, textarea) {
  max-width: 100%;
  min-height: 42px;
  border: 1px solid var(--nn-color-border-strong, #d0d5dd);
  border-radius: var(--nn-radius-control, 6px);
  background: #fff;
  color: var(--nn-color-text, #101828);
}

.nn-teacher-page .nn-teacher-form :where(input:not([type="checkbox"]):not([type="radio"]), select, textarea):focus {
  outline: none;
  border-color: var(--nn-color-accent, #0f9fa8);
  box-shadow: 0 0 0 3px rgba(15, 159, 168, 0.1);
}

.nn-teacher-page .btn,
.nn-export-page .btn {
  min-height: var(--nn-button-height, 40px);
  border-radius: var(--nn-radius-control, 6px);
  box-shadow: none;
}

.nn-teacher-page .btn--primary,
.nn-export-page .btn--primary {
  border-color: var(--nn-color-accent, #0f9fa8);
  background: var(--nn-color-accent, #0f9fa8);
  color: #fff;
}

.nn-teacher-page .btn--primary:hover,
.nn-export-page .btn--primary:hover {
  border-color: var(--nn-color-accent-hover, #087780);
  background: var(--nn-color-accent-hover, #087780);
  color: #fff;
}

@media (max-width: 767px) {
  .nn-teacher-page {
    gap: 18px;
    padding-top: 8px;
  }

  .nn-teacher-page-header {
    display: grid;
    grid-template-columns: minmax(0, 1fr);
    gap: 14px;
    padding-bottom: 16px;
  }

  .nn-teacher-page-actions {
    display: grid;
    grid-template-columns: minmax(0, 1fr);
    width: 100%;
  }

  .nn-teacher-page-actions .btn,
  .nn-teacher-page-header > .btn {
    width: 100%;
  }

  .nn-teacher-panel {
    padding: 14px;
  }
}