/* Mobile-first interaction and layout refinements. */
@media (max-width: 700px) {
  body {
    font-size: 16px;
  }
  header {
    position: sticky;
    top: 0;
    z-index: 10;
    padding: 13px 17px;
    flex-direction: row;
    gap: 8px;
    background: #10253ff5;
    backdrop-filter: blur(14px);
  }
  .brand {
    font-size: 18px;
  }
  .brand span {
    display: none;
  }
  nav {
    gap: 13px;
  }
  nav a {
    font-size: 12px;
    white-space: nowrap;
  }
  main {
    padding: 24px 16px 48px;
  }
  .hero {
    padding: 4px 0 18px;
  }
  .hero h1 {
    font-size: 30px;
  }
  .card {
    padding: 19px;
    border-radius: 14px;
  }
  .sizes {
    grid-template-columns: repeat(2, 1fr);
    gap: 9px;
  }
  .sizes label {
    padding: 10px;
  }
  .grid,
  .three {
    grid-template-columns: 1fr;
    gap: 0;
  }
  .choice {
    gap: 11px;
    flex-direction: column;
  }
  .primary {
    width: 100%;
    min-height: 48px;
  }
  .receipt {
    display: block;
  }
  .receipt .button {
    width: 100%;
    text-align: center;
  }
  .two-col {
    grid-template-columns: 1fr;
    gap: 12px;
  }
  .payment form {
    display: grid;
  }
  .payment input[type="file"] {
    max-width: 100%;
  }
  .results a {
    gap: 3px;
  }
  .admin-menu {
    grid-template-columns: 1fr 1fr;
  }
  .admin-menu > a,
  .disabled-card {
    min-height: 88px;
    padding: 13px;
  }
  .metrics {
    grid-template-columns: 1fr;
  }
  .metrics div {
    padding: 15px;
    border-right: 0;
    border-bottom: 1px solid #ffffff1a;
  }
  .size-stats {
    grid-template-columns: repeat(2, 1fr);
  }
  .settings-grid {
    grid-template-columns: 1fr !important;
  }
  .table-wrap {
    padding: 0;
    border: 0;
    background: transparent;
    box-shadow: none;
  }
  .table-wrap table {
    background: #fff;
    border: 1px solid #dbe5ee;
    border-radius: 12px;
  }
  .admin-hero h1 {
    font-size: 29px;
  }
}
.settings-heading {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
}
.settings-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 0 18px;
}
.settings-grid label:last-child {
  grid-column: 1/-1;
}