/* DATAMAP EFC — Accessibility + Dark Mode (D10)
 * dark mode toggle · focus states · skip link
 */

/* ── 1. Design tokens ─────────────────────────────────────── */
:root {
  --dm-bg:         #f6f7f9;  --dm-surface:    #ffffff;
  --dm-border:     #dde1e6;  --dm-text:       #111827;
  --dm-text-muted: #6b7280;  --dm-nav-bg:     #f8f9fa;
  --dm-link:       #0d6efd;  --dm-focus-ring: #2563eb;
  --dm-focus-shadow: 0 0 0 3px rgba(37, 99, 235, 0.45);
}
[data-theme="dark"] {
  --dm-bg:         #0f1117;  --dm-surface:    #1a1d27;
  --dm-border:     #2e3347;  --dm-text:       #e2e8f0;
  --dm-text-muted: #94a3b8;  --dm-nav-bg:     #12151f;
  --dm-link:       #60a5fa;  --dm-focus-ring: #60a5fa;
  --dm-focus-shadow: 0 0 0 3px rgba(96, 165, 250, 0.45);
}
@media (prefers-color-scheme: dark) {
  :root:not([data-theme]) {
    --dm-bg:         #0f1117;  --dm-surface:    #1a1d27;
    --dm-border:     #2e3347;  --dm-text:       #e2e8f0;
    --dm-text-muted: #94a3b8;  --dm-nav-bg:     #12151f;
    --dm-link:       #60a5fa;  --dm-focus-ring: #60a5fa;
    --dm-focus-shadow: 0 0 0 3px rgba(96, 165, 250, 0.45);
  }
}

/* ── 2. Dark mode structural overrides ───────────────────── */
[data-theme="dark"] body { background-color: var(--dm-bg); color: var(--dm-text); }
[data-theme="dark"] .navbar,
[data-theme="dark"] .navbar-light {
  background-color: var(--dm-nav-bg) !important;
  border-bottom: 1px solid var(--dm-border);
}
[data-theme="dark"] .navbar-brand,
[data-theme="dark"] .nav-link         { color: var(--dm-text) !important; }
[data-theme="dark"] .nav-link:hover   { color: var(--dm-link) !important; }
[data-theme="dark"] .container,
[data-theme="dark"] .container-fluid  { background-color: var(--dm-bg); }
[data-theme="dark"] .dropdown-menu    { background-color: var(--dm-surface); border-color: var(--dm-border); }
[data-theme="dark"] .dropdown-item    { color: var(--dm-text); }
[data-theme="dark"] .dropdown-item:hover,
[data-theme="dark"] .dropdown-item:focus { background-color: var(--dm-border); }
[data-theme="dark"] .dropdown-divider { border-color: var(--dm-border); }
[data-theme="dark"] .form-control,
[data-theme="dark"] .form-select {
  background-color: var(--dm-surface);
  border-color: var(--dm-border);
  color: var(--dm-text);
}
[data-theme="dark"] .form-control::placeholder { color: var(--dm-text-muted); }
[data-theme="dark"] .btn-outline-secondary      { color: var(--dm-text-muted); border-color: var(--dm-border); }
[data-theme="dark"] .btn-outline-secondary:hover { background-color: var(--dm-border); color: var(--dm-text); }
[data-theme="dark"] .alert { background-color: var(--dm-surface); color: var(--dm-text); }

/* ── 3. Focus states — Vale compliance ───────────────────── */
:focus-visible {
  outline: 2px solid var(--dm-focus-ring);
  outline-offset: 2px;
  box-shadow: var(--dm-focus-shadow);
}
:focus:not(:focus-visible) { outline: none; }
.form-control:focus,
.form-select:focus          { border-color: var(--dm-focus-ring); box-shadow: var(--dm-focus-shadow); }
.nav-link:focus-visible,
.dropdown-item:focus-visible,
.navbar-brand:focus-visible { outline: 2px solid var(--dm-focus-ring); outline-offset: 2px; border-radius: 3px; }
.leaflet-marker-icon:focus,
.leaflet-interactive:focus  { outline: 3px solid var(--dm-focus-ring); outline-offset: 1px; }
.leaflet-control-zoom a:focus-visible,
.leaflet-control a:focus-visible { outline: 2px solid var(--dm-focus-ring); outline-offset: 1px; }
input[type="range"]:focus-visible,
input[type="checkbox"]:focus-visible,
input[type="radio"]:focus-visible   { outline: 2px solid var(--dm-focus-ring); outline-offset: 2px; }

/* ── 4. Skip link ────────────────────────────────────────── */
.skip-link {
  position: absolute; top: -100%; left: 0; z-index: 9999;
  padding: 10px 16px; background: var(--dm-focus-ring); color: #fff;
  font-weight: 600; font-size: 0.95rem; border-radius: 0 0 4px 0;
  text-decoration: none; transition: top 0.15s ease; white-space: nowrap;
}
.skip-link:focus { top: 0; outline: 3px solid #fff; outline-offset: 2px; }

/* ── 5. Dark mode toggle button ─────────────────────────── */
/* O toggle vive na navbar de MARCA (teal vale-green ~rgb(0,126,122) no claro,
 * escura no dark) — não na --dm-nav-bg clara que estas vars assumem. Por isso
 * o texto/borda são CLAROS (não --dm-text-muted #6b7280 cinza): cinza no teal
 * dava contraste 1,02:1 (☾ Escuro quase invisível, WCAG falha grave). Branco
 * no teal = 4,93:1 (passa AA) e no navbar escuro = ótimo. Casa com os demais
 * links do nav e restaura a intenção original (efc-chrome.css color:#fff). */
#dm-toggle {
  display: inline-flex; align-items: center; gap: 5px;
  padding: 4px 10px; font-size: 0.78rem; border-radius: 20px;
  cursor: pointer; border: 1px solid rgba(255,255,255,.30);
  background: transparent; color: #fff;
  transition: background 0.2s, color 0.2s; white-space: nowrap; margin-left: 8px;
}
#dm-toggle:hover        { background: rgba(255,255,255,.18); color: #fff; }
#dm-toggle:focus-visible { outline: 2px solid var(--dm-focus-ring); outline-offset: 2px; }
#dm-toggle-icon         { font-size: 0.9rem; line-height: 1; }