@media (max-width: 1040px) {
  .hero-grid {
    grid-template-columns: minmax(0, 0.82fr) minmax(490px, 1.18fr);
    gap: 38px;
  }

  .hero h1 {
    font-size: 48px;
  }

  .exam-layout {
    grid-template-columns: minmax(0, 1fr) 245px;
  }

  .admin-grid {
    grid-template-columns: minmax(0, 1.3fr) minmax(290px, 0.7fr);
  }
}

@media (max-width: 880px) {
  .site-header {
    position: relative;
    background: var(--navy-950);
  }

  .hero {
    padding-block-start: 62px;
  }

  .hero-grid {
    grid-template-columns: 1fr;
    gap: 44px;
  }

  .hero-copy {
    max-width: 660px;
    margin-inline: auto;
    padding-block: 0;
    text-align: center;
  }

  .hero h1,
  .hero-description,
  .teacher-card {
    margin-inline: auto;
  }

  .hero-stats {
    justify-content: center;
  }

  .start-card {
    width: min(100%, 680px);
    margin-inline: auto;
  }

  .instructions-grid {
    grid-template-columns: 1fr;
    max-width: 680px;
    margin-inline: auto;
  }

  .instruction-card {
    min-height: 0;
  }

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

  .question-sidebar {
    position: static;
    order: -1;
  }

  .question-map {
    grid-template-columns: repeat(10, 1fr);
  }

  .sidebar-summary,
  .finish-button {
    max-width: 440px;
    margin-inline: auto;
  }

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

  .active-exams-list {
    grid-template-columns: repeat(2, 1fr);
  }

  .empty-exams {
    grid-column: 1 / -1;
  }
}

@media (max-width: 620px) {
  .container {
    width: min(calc(100% - 28px), var(--container));
  }

  .header-badge {
    display: none;
  }

  .brand-copy strong {
    font-size: 17px;
  }

  .word-bank-header {
    align-items: flex-start;
    flex-direction: column;
  }

  .hero {
    min-height: 0;
    padding-block: 52px 56px;
  }

  .hero h1 {
    font-size: clamp(38px, 12vw, 52px);
  }

  .hero-description {
    font-size: 14px;
  }

  .hero-stats {
    gap: 14px;
  }

  .hero-stats strong {
    font-size: 15px;
  }

  .start-card {
    padding: 28px 20px;
    border-radius: 22px;
  }

  .form-row {
    grid-template-columns: 1fr;
    gap: 0;
  }

  .instructions-section {
    padding-block: 64px;
  }

  .section-heading h2 {
    font-size: 26px;
  }

  .instruction-card {
    padding: 25px;
  }

  .footer-content {
    flex-direction: column;
    text-align: center;
  }

  .exam-header-content {
    min-height: 68px;
  }

  .exam-brand .brand-copy {
    display: none;
  }

  .exam-brand .brand-mark {
    width: 60px;
    height: 40px;
  }

  .student-identity strong {
    max-width: 150px;
  }

  .exam-overview {
    padding-block-start: 22px;
  }

  .exam-overview-grid {
    align-items: stretch;
    flex-direction: column;
    gap: 16px;
  }

  .timer-card {
    min-width: 0;
    justify-content: center;
  }

  .question-panel {
    min-height: 0;
    padding: 25px 18px;
  }

  .autosave-status {
    position: static;
    margin-bottom: 14px;
  }

  .question-panel article h2 {
    font-size: 19px;
  }

  .question-actions {
    grid-template-columns: 1fr 1fr;
  }

  .flag-button {
    grid-column: 1 / -1;
    grid-row: 1;
  }

  .question-map {
    grid-template-columns: repeat(5, 1fr);
  }

  .modal-actions,
  .submission-stats {
    grid-template-columns: 1fr;
  }

  .confirm-modal,
  .submission-card {
    padding: 32px 20px;
  }

  .result-container {
    width: min(calc(100% - 28px), 920px);
  }

  .result-hero {
    padding-inline: 20px;
  }

  .result-summary {
    grid-template-columns: 1fr 1fr;
  }

  .result-summary > div {
    border-block-end: 1px solid #edf0f4;
  }

  .result-student-card {
    grid-column: 1 / -1;
  }

  .result-actions {
    align-items: stretch;
    flex-direction: column;
  }

  .result-actions .primary-button,
  .result-actions .home-button {
    width: 100%;
  }

  .answer-comparison {
    grid-template-columns: 1fr;
  }

  .admin-profile-copy {
    display: none;
  }

  .admin-main {
    padding-block-start: 28px;
  }

  .admin-welcome {
    align-items: stretch;
    flex-direction: column;
  }

  .admin-date {
    min-width: 0;
  }

  .admin-access-card {
    grid-template-columns: 1fr;
  }

  .admin-access-form {
    width: 100%;
  }

  .admin-stats {
    grid-template-columns: 1fr;
  }

  .admin-card {
    padding: 22px 17px;
  }

  .admin-card-heading {
    align-items: stretch;
    flex-direction: column;
  }

  .admin-form-row,
  .file-preview-stats,
  .active-exams-list {
    grid-template-columns: 1fr;
  }

  .admin-form-actions {
    align-items: stretch;
    flex-direction: column;
  }
}

@media (max-width: 390px) {
  .hero-stats {
    align-items: stretch;
    gap: 8px;
  }

  .hero-stats .stat-divider {
    height: auto;
  }

  .teacher-card {
    text-align: right;
  }
}