/* =========================================================
   Base64 Encoder / Decoder – Styles (Basis: assets/css/tool-ui.css)
   ========================================================= */
.b64-toolbar { display: flex; flex-wrap: wrap; align-items: center; gap: 12px 18px; margin-bottom: 18px; padding: 14px 18px; }
.b64-toolbar__end { margin-left: auto; }
.b64-encopts { display: flex; flex-wrap: wrap; align-items: center; gap: 12px 18px; transition: opacity .2s; }
.b64-encopts.is-disabled { opacity: .4; pointer-events: none; }
.b64-opt { display: inline-flex; align-items: center; gap: 8px; font-size: 13px; font-weight: 600; color: var(--muted); }
.b64-opt .tu-select { width: auto; padding-top: 8px; padding-bottom: 8px; font-size: 13.5px; }
.b64-mode span { min-width: 92px; text-align: center; }

.b64-panes { display: grid; grid-template-columns: minmax(0, 1fr) minmax(0, 1fr); gap: 18px; align-items: start; }
.b64-pane { display: flex; flex-direction: column; min-width: 0; }
.b64-pane + .b64-pane { margin-top: 0; }
.b64-meta { font-size: 12.5px; color: var(--muted); font-variant-numeric: tabular-nums; }
.b64-file { position: relative; cursor: pointer; }
.b64-file input { position: absolute; inset: 0; opacity: 0; cursor: pointer; width: 100%; }
.b64-file:focus-within { outline: 2px solid #8fa8ff; outline-offset: 2px; }

/* Eingabe- und Ausgabefeld */
.b64-drop { position: relative; }
.b64-area {
  display: block; width: 100%; height: 440px; padding: 14px 16px; border-radius: 14px; resize: vertical;
  font-family: var(--mono); font-size: 13.5px; line-height: 1.6; color: var(--ink); overflow-wrap: anywhere; word-break: break-all;
  background: #fff; border: 1.5px solid rgba(15,19,48,.12); outline: 0; transition: border-color .25s, box-shadow .25s;
}
.b64-area:focus { border-color: var(--blue); box-shadow: 0 0 0 4px rgba(91,140,255,.15); }
.b64-area--out { background: #f7f8fc; }
.b64-area::placeholder { color: #9aa0bd; font-family: Inter, sans-serif; }
.b64:not(.is-dec) #b64Input { word-break: normal; overflow-wrap: break-word; font-family: Inter, sans-serif; font-size: 15px; }
.b64-dropnote {
  position: absolute; inset: 0; display: none; place-items: center; border-radius: 14px; pointer-events: none;
  font-weight: 700; color: var(--violet); background: rgba(155,123,255,.08); border: 2px dashed var(--violet);
}
.b64-drop.is-drop .b64-dropnote { display: grid; }

/* Geladene Datei */
.b64-filecard {
  display: grid; grid-template-columns: auto minmax(0, 1fr) auto; align-items: center; gap: 14px; min-height: 440px; align-content: start;
  padding: 18px; border-radius: 14px; background: #fff; border: 1.5px solid rgba(15,19,48,.12);
}
.b64-filecard__info { display: grid; gap: 2px; min-width: 0; }
.b64-filecard__info strong { overflow-wrap: anywhere; color: var(--ink); }
.b64-filecard__info span { font-size: 13px; color: var(--muted); }
.b64-thumb { grid-column: 1 / -1; justify-self: center; max-width: 100%; max-height: 320px; margin-top: 10px; border-radius: 10px; object-fit: contain; background: repeating-conic-gradient(#eef0f6 0 25%, #fff 0 50%) 0 0 / 16px 16px; }

/* Ausgabeformate (nur beim Kodieren); CSS/HTML nur bei Bildern */
.b64-formats { margin-bottom: 12px; align-self: flex-start; }
.b64-formats[hidden] { display: none; }
.b64:not(.is-img) .b64-imgonly { display: none; }

/* Status */
.b64-status { margin-top: 14px; display: grid; gap: 10px; }
.b64-status:empty { display: none; }
.b64-status .tu-checks { margin: 0; }
.b64-ok { display: flex; flex-wrap: wrap; align-items: center; gap: 10px; }
.b64-variant { font-size: 12.5px; color: var(--muted); }
.b64-badge { display: inline-block; padding: 4px 12px; border-radius: 999px; font-size: 12.5px; font-weight: 700; }
.b64-badge--ok { color: #0f7a52; background: rgba(34,192,140,.14); }
.b64-badge--err { color: #fff; background: var(--err); }
.b64-error { display: grid; gap: 10px; padding: 14px 16px; border-radius: 14px; background: rgba(209,52,56,.06); border: 1px solid rgba(209,52,56,.25); }
.b64-error__head { display: flex; flex-wrap: wrap; align-items: center; gap: 10px; color: var(--ink); }
.b64-error p { font-size: 14px; color: var(--text); }
.b64-error .tu-btn { justify-self: start; }
.b64-guess { display: flex; flex-wrap: wrap; align-items: center; gap: 10px 14px; }

/* Dekodierte Binärdaten */
.b64-binary { display: grid; gap: 12px; min-height: 440px; align-content: start; padding: 18px; border-radius: 14px; background: #f7f8fc; border: 1.5px solid rgba(15,19,48,.12); }
.b64-binary[hidden] { display: none; }
.b64-binary__head { display: flex; align-items: center; gap: 14px; }
.b64-binary__head div { display: grid; gap: 2px; }
.b64-binary__head strong { color: var(--ink); }
.b64-binary__head span:not(.icon-tile) { font-size: 13px; color: var(--muted); }
.b64-preview { display: grid; place-items: center; padding: 14px; border-radius: 12px; background: repeating-conic-gradient(#e6e9f2 0 25%, #fff 0 50%) 0 0 / 16px 16px; }
.b64-preview[hidden] { display: none; }
.b64-preview img { max-width: 100%; max-height: 260px; min-width: 96px; object-fit: contain; }
.b64-preview img.is-pixel, .b64-thumb.is-pixel { image-rendering: pixelated; }
.b64-thumb.is-pixel { min-width: 96px; }
.b64-hexlabel { margin-top: 4px; justify-content: flex-start; }
.b64-hex { max-height: 230px; font-size: 12px; }

.b64-stats { display: flex; flex-wrap: wrap; gap: 6px 16px; margin-top: 12px; font-size: 12.5px; color: var(--muted); font-variant-numeric: tabular-nums; }
.b64-stats b { color: var(--ink); }

@media (max-width: 1000px) {
  .b64-panes { grid-template-columns: minmax(0, 1fr); }
  .b64-area, .b64-filecard, .b64-binary { height: auto; min-height: 280px; }
  .b64-area { height: 280px; }
  .b64-toolbar__end { margin-left: 0; }
}