/* Split Happens: tool-specific layout. Colours, type and controls come from /toolbox/shared.css. */
.tool-split .switcher { display: flex; gap: 4px; padding: 4px; width: fit-content; max-width: 100%; border: 1px solid var(--border); border-radius: var(--radius); background: var(--background); margin-bottom: 1rem; }
.tool-split .switcher button { background: transparent; border-color: transparent; min-height: 40px; }
.tool-split .switcher button:hover:not(:disabled) { background: var(--surface-2); border-color: transparent; }
.tool-split .switcher [aria-pressed="true"] { color: var(--text); background: var(--red-soft); border-color: rgba(229, 25, 43, 0.4); }
.tool-split .panel { padding: 0; }
.tool-split fieldset { min-width: 0; border: 0; margin: 0; padding: 0; }
.tool-split .dropzone { display: flex; position: relative; flex-direction: column; align-items: center; text-align: center; gap: 0.3rem; border: 1px dashed var(--border-strong); border-radius: var(--radius); padding: 1.75rem 1rem; background: var(--background); cursor: pointer; transition: border-color var(--dur) var(--ease), background var(--dur) var(--ease); }
.tool-split .dropzone:hover, .tool-split .dropzone:focus-within, .tool-split .dropzone.dragover { border-color: var(--red-bright); background: var(--surface-2); }
.tool-split .dropzone:focus-within { outline: 2px solid var(--focus); outline-offset: 3px; }
.tool-split .dropzone input { position: absolute; inset: 0; width: 100%; height: 100%; min-height: 0; margin: 0; opacity: 0; cursor: pointer; }
.tool-split .dropzone strong { font-weight: 600; }
.tool-split .dropzone span:not(.drop-icon):not(.desktop-hint) { font-size: 0.85rem; color: var(--text-muted); }
.tool-split .drop-icon { color: var(--red-text); font-size: 1.8rem; line-height: 1.2; }
.tool-split .file-info, .tool-split #joined-name { overflow-wrap: anywhere; }
.tool-split .file-info { font: 0.8rem/1.6 var(--font-mono); color: var(--text-muted); margin: 0.75rem 0 1.5rem; }
.tool-split .method { display: flex; gap: 0.6rem 1.4rem; flex-wrap: wrap; margin-bottom: 1.5rem; }
.tool-split legend { margin-bottom: 0.55rem; font-weight: 600; }
.tool-split .method label, .tool-split .check { display: flex; align-items: center; gap: 0.55rem; font-size: 0.9rem; font-weight: 500; }
.tool-split input[type="radio"], .tool-split input[type="checkbox"] { width: 18px; height: 18px; margin: 0; flex: none; }
.tool-split .size-row { display: grid; grid-template-columns: 1fr 120px; gap: 0.9rem; }
.tool-split .presets { display: flex; gap: 0.45rem; flex-wrap: wrap; margin: 0.75rem 0 1.1rem; }
.tool-split .presets button { min-height: 36px; padding: 0.3rem 0.75rem; font-size: 0.78rem; }
.tool-split .hint { color: var(--text-muted); font-size: 0.85rem; margin: 0.75rem 0; }
.tool-split .eyebrow { display: block; font-family: var(--font-mono); font-size: 0.75rem; letter-spacing: 0.04em; text-transform: uppercase; color: var(--red-text); margin-bottom: 0.25rem; }
.tool-split .error { color: var(--red-text); font-size: 0.9rem; overflow-wrap: anywhere; }
.tool-split .error:empty { display: none; }
.tool-split .summary { border-top: 1px solid var(--border); margin-top: 1.5rem; padding-top: 1.4rem; display: grid; grid-template-columns: 1fr 1fr; gap: 1rem; }
.tool-split .summary span, .tool-split .summary strong { display: block; }
.tool-split .summary strong { font-size: clamp(1.2rem, 4vw, 1.7rem); font-weight: 700; letter-spacing: -0.03em; overflow-wrap: anywhere; }
.tool-split .segments { display: flex; gap: 4px; height: 9px; margin: 1.25rem 0; }
.tool-split .segments span { min-width: 2px; flex: 1; background: var(--red); border-radius: 2px; opacity: 0.85; }
.tool-split .segments span:nth-child(even) { opacity: 0.45; }
.tool-split .actions { display: flex; flex-wrap: wrap; gap: 0.55rem; margin: 1.5rem 0 0.9rem; }
.tool-split details { border-top: 1px solid var(--border); margin-top: 1.5rem; padding-top: 1rem; }
.tool-split summary { cursor: pointer; color: var(--text); min-height: 32px; font-size: 0.9rem; font-weight: 600; }
.tool-split .file-list { list-style: none; padding: 0; margin: 0.6rem 0; }
.tool-split .file-list li { display: flex; align-items: center; justify-content: space-between; gap: 1rem; border-bottom: 1px solid var(--border); padding: 0.6rem 0; }
.tool-split .file-list .filename { font: 0.75rem/1.5 var(--font-mono); overflow-wrap: anywhere; min-width: 0; }
.tool-split .file-list small { display: block; color: var(--text-muted); margin-top: 0.2rem; }
.tool-split .file-list button { flex: none; font-size: 0.8rem; padding: 0.5rem 0.75rem; }
.tool-split .pagination { display: flex; justify-content: space-between; gap: 0.5rem; align-items: center; font-size: 0.75rem; color: var(--text-muted); }
.tool-split .job { display: flex; gap: 0.9rem; align-items: center; margin-top: 1.1rem; }
.tool-split progress { width: 100%; height: 9px; }
.tool-split #status { color: var(--red-text); font-size: 0.85rem; overflow-wrap: anywhere; }
.tool-split #status:empty { display: none; }
.tool-split .help { color: var(--text-muted); font-size: 0.85rem; }
.tool-split .help p { margin-top: 0.75rem; }
@media (max-width: 520px) {
  .tool-split .desktop-hint { display: none; }
  .tool-split .actions { flex-direction: column; }
  .tool-split .actions button { width: 100%; }
  .tool-split .pagination button { padding: 0.5rem; font-size: 0.75rem; }
}