/* Tło aplikacji i okno „Wygląd” (B-094). Ładowane po style.css i paczce motywu organizacji.
   Tło to wyłącznie preferencja klienta: wybór trzyma przeglądarka (appearance.js), serwer go nie zna.
   Bez atrybutu data-bg strona wygląda dokładnie jak dotąd („Domyślne” = motyw organizacji). */

/* ---- warstwa tła -------------------------------------------------------------------------- */
.bg-layer {
  display: none;
  position: fixed;
  inset: 0;
  z-index: -1;
  pointer-events: none;
  overflow: hidden;
  background: var(--color-bg);
}
.bg-layer::before,
.bg-layer::after {
  content: "";
  position: absolute;
  inset: 0;
}

html[data-bg] {
  background: var(--color-bg);
}
html[data-bg] body {
  background: transparent;
}
html[data-bg] .bg-layer {
  display: block;
}

/* PROFIL: rzut dopasowany do motywu + poświata marki. */
html[data-bg="profil"] .bg-layer::before {
  background: url("../img/bg/profil.14d5e68b4beb.jpg") right bottom / cover no-repeat;
}
html[data-bg="profil"] .bg-layer::after {
  background: linear-gradient(
    115deg,
    color-mix(in srgb, var(--color-primary) 10%, transparent),
    transparent 45%,
    color-mix(in srgb, var(--color-warning) 8%, transparent)
  );
}
html[data-theme="dark"][data-bg="profil"] .bg-layer::before {
  filter: invert(1);
  opacity: 0.55;
  mix-blend-mode: screen;
}

/* Fasada: rozmyte zdjęcie pod welonem w kolorze tła motywu. Welon dobrany tak, by przygaszony tekst
   (--color-text-muted) miał kontrast AA także na najjaśniejszych/najciemniejszych fragmentach zdjęcia. */
html[data-bg="fasada"] .bg-layer::before {
  inset: -40px;
  background: url("../img/bg/fasada.16312f3bf30b.jpg") center / cover no-repeat;
  filter: blur(14px) saturate(0.9);
}
html[data-bg="fasada"] .bg-layer::after {
  background: color-mix(in srgb, var(--color-bg) 82%, transparent);
}
html[data-theme="dark"][data-bg="fasada"] .bg-layer::after {
  background: color-mix(in srgb, var(--color-bg) 90%, transparent);
}

/* Własne: obraz wgrany przez użytkownika (do końca sesji), --bg-custom ustawia skrypt. */
html[data-bg="custom"] .bg-layer::before {
  inset: -30px;
  background: var(--bg-custom, none) center / cover no-repeat;
  filter: blur(6px);
}
html[data-bg="custom"] .bg-layer::after {
  background: color-mix(in srgb, var(--color-bg) 86%, transparent);
}
html[data-theme="dark"][data-bg="custom"] .bg-layer::after {
  background: color-mix(in srgb, var(--color-bg) 92%, transparent);
}

/* ---- okno „Wygląd” ------------------------------------------------------------------------ */
.appearance-dialog {
  margin: auto; /* reset przeglądarki centruje okno modalne; bez tego ląduje w rogu */
  width: min(760px, 92vw);
  padding: 1.25rem;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  background: var(--color-surface);
  color: var(--color-text);
  box-shadow: var(--shadow-md);
}
.appearance-dialog::backdrop {
  background: rgba(10, 19, 25, 0.5);
}
.appearance-head {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 1rem;
}
.appearance-title {
  margin: 0;
  font-size: var(--text-sm);
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  color: var(--color-text-muted);
}
.appearance-lead {
  margin: 0.25rem 0 1rem;
  font-size: var(--text-sm);
  color: var(--color-text-muted);
}
.appearance-close {
  flex-shrink: 0;
  width: 32px;
  height: 32px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  color: var(--color-text-muted);
  font-size: 1.1rem;
  line-height: 1;
}
.appearance-close:hover {
  background: var(--color-surface-offset);
  color: var(--color-text);
}
.appearance-tiles {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 0.75rem;
}
@media (max-width: 600px) {
  .appearance-tiles {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}
.appearance-tile {
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
  padding: 0.5rem;
  border: 2px solid transparent;
  border-radius: var(--radius-lg);
  text-align: left;
  color: inherit;
}
.appearance-tile:hover {
  background: var(--color-surface-offset);
}
.appearance-tile[aria-pressed="true"] {
  border-color: var(--color-primary);
  background: var(--color-primary-highlight);
}
.appearance-tile:focus-visible,
.appearance-close:focus-visible,
.appearance-toggle:focus-visible {
  outline: 2px solid var(--color-primary);
  outline-offset: 2px;
}
.appearance-tile b {
  font-size: var(--text-sm);
}
.appearance-tile small {
  display: block;
  font-size: var(--text-xs);
  color: var(--color-text-muted);
}
.appearance-thumb {
  position: relative;
  display: grid;
  place-items: center;
  height: 78px;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  background-color: var(--color-bg);
  background-size: cover;
  background-position: right bottom;
  font-size: 1.5rem;
  color: var(--color-text-muted);
  overflow: hidden;
}
.appearance-thumb[data-thumb="profil"] {
  background-image: url("../img/bg/profil.14d5e68b4beb.jpg");
}
html[data-theme="dark"] .appearance-thumb[data-thumb="profil"] {
  filter: invert(1);
  opacity: 0.7;
}
.appearance-thumb[data-thumb="fasada"] {
  background-image: linear-gradient(
      color-mix(in srgb, var(--color-bg) 55%, transparent),
      color-mix(in srgb, var(--color-bg) 55%, transparent)
    ),
    url("../img/bg/fasada.16312f3bf30b.jpg");
  background-position: center;
}
.appearance-thumb[data-thumb="custom"] {
  background-image: repeating-linear-gradient(
    45deg,
    var(--color-surface-offset) 0 6px,
    var(--color-bg) 6px 12px
  );
}
.appearance-thumb[data-thumb="custom"].has-image {
  background-image: var(--bg-custom);
  background-position: center;
  color: transparent;
}
.appearance-upload {
  display: none;
  margin: 0.75rem 0 0;
  font-size: var(--text-sm);
}
.appearance-upload.is-on {
  display: block;
}
.appearance-note {
  margin: 0.75rem 0 0;
  font-size: var(--text-xs);
  color: var(--color-text-muted);
}
.appearance-message {
  margin: 0.5rem 0 0;
  min-height: 1.2em;
  font-size: var(--text-xs);
  color: var(--color-error);
}
.appearance-foot {
  display: flex;
  justify-content: flex-end;
  margin-top: 1rem;
}