/* In-app admin modal and standalone admin workspace. */
@layer features {
  .admin-overlay {
    position: fixed;
    inset: 0;
    z-index: var(--z-overlay);
    display: grid;
    place-items: center;
    padding: var(--space-3);
    background: rgba(3, 22, 29, 0.58);
    -webkit-backdrop-filter: blur(12px);
    backdrop-filter: blur(12px);
  }

  .admin-panel {
    inline-size: min(100%, 64rem);
    max-block-size: 90svh;
    overflow: hidden;
    display: flex;
    flex-direction: column;
    border: 1px solid var(--card-border);
    border-radius: var(--radius-lg);
    background: var(--card);
    box-shadow: var(--shadow-lg);
    container-type: inline-size;
  }

  .admin-header,
  .admin-topbar,
  .admin-table-toolbar,
  .admin-chart-toolbar,
  .admin-actions,
  .form-actions {
    display: flex;
    align-items: center;
    gap: var(--space-2);
  }

  .admin-header,
  .admin-topbar {
    justify-content: space-between;
    padding: var(--space-3) var(--space-4);
    border-block-end: 1px solid var(--card-border);
  }

  .admin-tabs,
  .admin-nav {
    display: flex;
    gap: var(--space-1);
  }

  .admin-tabs {
    padding: var(--space-2) var(--space-3);
    overflow-x: auto;
    background: var(--bg-elevated);
  }

  .admin-tab,
  .admin-nav-btn {
    min-block-size: 44px;
    padding-inline: var(--space-3);
    border: 1px solid transparent;
    border-radius: var(--radius-sm);
    color: var(--text-muted);
    background: transparent;
    font: 600 var(--step--1)/1 var(--font);
    cursor: pointer;
  }

  .admin-tab.active,
  .admin-nav-btn.active {
    color: var(--text);
    border-color: color-mix(in srgb, var(--accent) 24%, transparent);
    background: color-mix(in srgb, var(--accent) 11%, var(--card));
  }

  .admin-content { flex: 1; overflow: auto; padding: var(--space-3); }
  .admin-table-wrap { max-inline-size: 100%; overflow: auto; }
  .admin-table {
    inline-size: 100%;
    border-collapse: collapse;
    font-size: var(--step--1);
    font-variant-numeric: tabular-nums;
  }

  .admin-table th,
  .admin-table td {
    padding: 0.75rem;
    border-block-end: 1px solid var(--card-border);
    text-align: start;
    vertical-align: top;
  }

  .admin-table th {
    position: sticky;
    inset-block-start: 0;
    z-index: 1;
    color: var(--text-muted);
    background: var(--card-strong);
    font-size: 0.72rem;
    letter-spacing: 0.06em;
    text-transform: uppercase;
  }

  .admin-table tbody tr:hover { background: color-mix(in srgb, var(--accent) 7%, transparent); }
  .admin-actions { flex-wrap: wrap; }
  .admin-form { padding: var(--space-3); border-block-start: 1px solid var(--card-border); }
  .form-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(min(100%, 14rem), 1fr));
    gap: var(--space-2);
  }

  .form-label { display: grid; gap: var(--space-1); color: var(--text-muted); font-size: var(--step--1); }
  :where(.form-label input, .form-label textarea, .form-label select, .form-control, .admin-table-toolbar select) {
    inline-size: 100%;
    min-block-size: 44px;
    padding-inline: var(--space-2);
    border: 1px solid var(--card-border);
    border-radius: var(--radius-sm);
    color: var(--text);
    background: var(--card-strong);
    font: inherit;
  }

  .form-label textarea { min-block-size: 6rem; padding-block: var(--space-2); resize: block; }
  .form-actions { justify-content: flex-end; margin-block-start: var(--space-3); }

  /* Standalone admin shell. */
  .admin-body { min-block-size: 100svh; }
  .admin-login {
    inline-size: min(calc(100% - 2rem), 28rem);
    margin: clamp(3rem, 14svh, 9rem) auto;
    padding: var(--space-5);
  }

  .admin-login h1 { margin: 0; font: 600 var(--step-3)/1 var(--font-display); }
  .admin-login > p { color: var(--text-muted); }
  .admin-login form,
  .admin-login label { display: grid; gap: var(--space-2); }
  .admin-login input {
    min-block-size: 48px;
    padding-inline: var(--space-3);
    border: 1px solid var(--card-border);
    border-radius: var(--radius-sm);
    color: var(--text);
    background: var(--bg-elevated);
  }

  .admin-back-link { display: inline-block; margin-block-start: var(--space-3); color: var(--accent); }
  .login-error { color: var(--danger); }

  .admin-app {
    min-block-size: 100svh;
    display: grid;
    grid-template-columns: minmax(15rem, 19rem) minmax(0, 1fr);
    gap: var(--space-3);
    padding: var(--space-3);
  }

  .admin-sidebar {
    position: sticky;
    inset-block-start: var(--space-3);
    block-size: calc(100svh - 2 * var(--space-3));
    display: flex;
    flex-direction: column;
    padding: var(--space-3);
  }

  .admin-brand { display: flex; align-items: center; gap: var(--space-2); padding: var(--space-2); }
  .admin-brand > span { font-size: 2rem; }
  .admin-brand strong,
  .admin-brand small { display: block; }
  .admin-brand strong { font: 600 var(--step-1)/1.2 var(--font-display); }
  .admin-brand small { color: var(--text-muted); }
  .admin-nav { flex-direction: column; margin-block: var(--space-4); }
  .admin-nav-btn { inline-size: 100%; text-align: start; }
  .admin-sidebar-foot { display: flex; gap: var(--space-1); margin-block-start: auto; }
  .admin-main { min-inline-size: 0; }
  .admin-topbar {
    position: sticky;
    inset-block-start: var(--space-3);
    z-index: var(--z-sticky);
    margin-block-end: var(--space-3);
    border: 1px solid var(--card-border);
    border-radius: var(--radius);
    background: var(--card);
    box-shadow: var(--shadow-sm);
    -webkit-backdrop-filter: blur(var(--blur));
    backdrop-filter: blur(var(--blur));
  }

  .admin-topbar h1 { margin: 0; font: 600 var(--step-2)/1.1 var(--font-display); }
  .admin-topbar p { margin: 0.25rem 0 0; }
  .admin-view { display: grid; gap: var(--space-3); }
  .admin-stats,
  .admin-grid-2,
  .admin-grid-3,
  .admin-stations-grid,
  .admin-files {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(min(100%, 15rem), 1fr));
    gap: var(--space-3);
  }

  .admin-panel.admin-panel { max-inline-size: none; padding: var(--space-3); }
  .admin-panel h3 { margin-block-start: 0; font-family: var(--font-display); }
  .admin-table-toolbar { justify-content: space-between; flex-wrap: wrap; }
  .admin-table-toolbar .search { flex: 1 1 16rem; }

  .admin-upwelling {
    display: grid;
    gap: var(--space-3);
    color: var(--text);
  }

  .admin-upwelling-head {
    display: flex;
    align-items: flex-start;
    justify-content: space-between;
    gap: var(--space-3);
    padding: var(--space-3);
    border: 1px solid color-mix(in srgb, var(--accent) 20%, var(--card-border));
    border-radius: var(--radius-md);
    background: linear-gradient(135deg,
      color-mix(in srgb, var(--accent) 11%, var(--card)),
      color-mix(in srgb, var(--sea) 6%, var(--card)));
  }

  .admin-upwelling-head h3 { margin: 0.15rem 0 0.4rem; }
  .admin-upwelling-head p { margin: 0; color: var(--text-muted); }
  .admin-upwelling-kicker {
    font-size: var(--step--2);
    font-weight: 700;
    letter-spacing: 0.08em;
    text-transform: uppercase;
    color: var(--accent) !important;
  }
  .admin-upwelling-date {
    flex: 0 0 auto;
    color: var(--text-muted);
    font-size: var(--step--2);
  }

  .admin-upwelling-switch {
    display: flex;
    gap: var(--space-2);
    flex-wrap: wrap;
  }

  .admin-upwelling-kpis {
    display: grid;
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: var(--space-2);
  }
  .admin-upwelling-kpis article {
    display: grid;
    gap: 0.35rem;
    padding: var(--space-3);
    border: 1px solid var(--card-border);
    border-radius: var(--radius-md);
    background: var(--card-strong);
  }
  .admin-upwelling-kpis span {
    color: var(--text-muted);
    font-size: var(--step--2);
  }
  .admin-upwelling-kpis strong {
    color: var(--sea);
    font: 700 var(--step-2)/1.1 var(--font-display);
  }

  .admin-upwelling-grid {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: var(--space-3);
  }
  .admin-upwelling-card {
    min-inline-size: 0;
    padding: var(--space-3);
    border: 1px solid var(--card-border);
    border-radius: var(--radius-md);
    background: var(--card-strong);
  }
  .admin-upwelling-card h4 {
    margin: 0 0 var(--space-2);
    color: var(--text);
    font-family: var(--font-display);
  }
  #admin-upwelling-map {
    block-size: 19rem;
    border-radius: var(--radius-sm);
    overflow: hidden;
    background: var(--bg-elevated);
  }
  .admin-upwelling-chart { position: relative; block-size: 19rem; }
  .admin-upwelling-meta dl { display: grid; gap: 0; margin: 0; }
  .admin-upwelling-meta dl div {
    display: flex;
    justify-content: space-between;
    gap: var(--space-2);
    padding-block: 0.65rem;
    border-block-end: 1px solid var(--card-border);
  }
  .admin-upwelling-meta dt { color: var(--text-muted); }
  .admin-upwelling-meta dd { margin: 0; font-weight: 650; text-align: end; }
  .admin-upwelling-images {
    display: grid;
    grid-template-columns: minmax(0, 2fr) minmax(0, 1fr);
    gap: var(--space-2);
  }
  .admin-upwelling-images a {
    display: block;
    overflow: hidden;
    border: 1px solid var(--card-border);
    border-radius: var(--radius-sm);
    background: #fff;
  }
  .admin-upwelling-images img {
    display: block;
    inline-size: 100%;
    block-size: auto;
  }
  .admin-upwelling-table-wrap {
    max-block-size: 24rem;
    overflow: auto;
  }
  .admin-upwelling-loading,
  .admin-upwelling-error {
    padding: var(--space-4);
    border: 1px solid var(--card-border);
    border-radius: var(--radius-md);
    background: var(--card-strong);
  }

  .station-upwelling-admin {
    margin-block-end: 0.85rem;
    padding: 0.75rem 0.85rem;
    border: 1px solid color-mix(in srgb, var(--accent) 24%, var(--card-border));
    border-radius: 14px;
    background: color-mix(in srgb, var(--accent) 7%, transparent);
  }
  .station-upwelling-admin h4 { margin: 0 0 0.65rem; font-size: 0.9rem; }
  .station-upwelling-admin-stats {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 0.5rem;
  }
  .station-upwelling-admin-stats span {
    display: grid;
    gap: 0.1rem;
    min-inline-size: 0;
  }
  .station-upwelling-admin-stats strong { color: var(--sea); font-size: 1rem; }
  .station-upwelling-admin-stats small {
    color: var(--text-muted);
    font-size: 0.68rem;
    line-height: 1.2;
  }
  .station-upwelling-chart-wrap {
    position: relative;
    block-size: 10rem;
    margin-block: 0.7rem 0.8rem;
    padding: 0.4rem;
    border: 1px solid var(--card-border);
    border-radius: 10px;
    background: var(--card-strong);
  }
  .station-upwelling-admin h5 {
    margin: 0 0 0.45rem;
    color: var(--text);
    font-size: 0.78rem;
  }
  .station-upwelling-dates {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 0.4rem;
    max-block-size: 9rem;
    overflow: auto;
    padding-inline-end: 0.2rem;
  }
  .station-upwelling-date {
    display: grid;
    gap: 0.1rem;
    min-inline-size: 0;
    padding: 0.45rem 0.55rem;
    border: 1px solid var(--card-border);
    border-radius: 9px;
    background: var(--card-strong);
  }
  .station-upwelling-date time {
    color: var(--text);
    font-size: 0.68rem;
    font-weight: 700;
    white-space: nowrap;
  }
  .station-upwelling-date span {
    color: var(--text-muted);
    font-size: 0.64rem;
  }

  @container (max-width: 620px) {
    .admin-header { align-items: stretch; flex-direction: column; }
    .admin-actions .btn { flex: 1; }
    .admin-upwelling-head { flex-direction: column; }
    .admin-upwelling-kpis,
    .admin-upwelling-grid,
    .admin-upwelling-images { grid-template-columns: 1fr; }
    .station-upwelling-dates { grid-template-columns: 1fr; }
  }
}

@layer overrides {
  @media (max-width: 820px) {
    .admin-app { grid-template-columns: 1fr; padding: var(--space-2); }
    .admin-sidebar {
      position: static;
      block-size: auto;
    }
    .admin-nav { flex-direction: row; overflow-x: auto; margin-block: var(--space-2); }
    .admin-nav-btn { inline-size: auto; white-space: nowrap; }
    .admin-topbar { inset-block-start: var(--space-2); }
  }
}