/* Layout and app-specific pieces only. Palette, buttons, the file drop, step
   badges, cards and status messages come from shared/ui/. */

:root {
  --accent: var(--accent-stairinator);
  --accent-rgb: var(--accent-stairinator-rgb);
}

.tabs {
  max-width: var(--page-max); margin: 0 auto; padding: 1.25rem var(--page-pad) 0; display: flex; gap: 6px;
}
.tab {
  padding: 9px 18px; border: 1px solid var(--border); border-bottom: none;
  border-radius: 8px 8px 0 0; background: transparent; color: var(--text-muted);
}
.tab:hover { color: var(--text); border-color: var(--border); }
.tab.active { background: var(--surface); color: var(--text); font-weight: 600; box-shadow: var(--shadow); }
.tab-panel { display: none; }
.tab-panel.active { display: grid; gap: 18px; }

main { max-width: var(--page-max); margin: 0 auto; padding: 16px var(--page-pad) 60px; }
select.wide { min-width: 16rem; }


.row { display: flex; gap: 12px; flex-wrap: wrap; align-items: flex-end; margin-bottom: 12px; }
label { display: flex; flex-direction: column; gap: 4px; font-size: 13px; color: var(--text-muted); }
label.inline { flex-direction: row; align-items: center; gap: 6px; }
label.checkbox { align-self: center; }
input, select, button { font: inherit; }
input[type=text], input[type=number], input[type=datetime-local], select {
  padding: 7px 9px; border: 1px solid var(--border); border-radius: 7px;
  background: var(--surface-2); color: var(--text);
  font-family: inherit;
}
input:focus, select:focus { outline: 2px solid var(--accent); outline-offset: 0; }
input:disabled { opacity: 0.6; cursor: not-allowed; }
/* An activity must have a start time — remove the picker's "clear" (×) button. */
input[type=datetime-local]::-webkit-clear-button { display: none; }

.file-label { cursor: pointer; }

.list { display: grid; gap: 12px; margin-bottom: 12px; }
.machine {
  border: 1px solid var(--border); border-radius: 8px; padding: 12px;
}
.machine-head { display: flex; gap: 10px; align-items: center; margin-bottom: 10px; }
.machine-head input { flex: 1 1 auto; }

table.levels { border-collapse: collapse; width: 100%; font-size: 13px; }
table.levels th, table.levels td { border: 1px solid var(--border); padding: 4px 6px; text-align: center; }
table.levels th { background: var(--surface-2); color: var(--text-muted); font-weight: 600; }
table.levels input { width: 4.5rem; text-align: center; padding: 4px; }
.derived { color: var(--text-muted); }

.segments { display: grid; gap: 8px; margin: 8px 0 12px; }
.segment {
  display: flex; gap: 8px; align-items: center;
  padding: 4px 6px; border: 1px solid transparent; border-radius: 7px;
}
.segment .idx { color: var(--text-muted); width: 1.4rem; text-align: right; }
.segment .handle { cursor: grab; color: var(--text-muted); padding: 0 2px; user-select: none; font-size: 16px; }
.segment { flex-wrap: wrap; }
.segment select { width: 12rem; }
.segment input { width: 3.75rem; }
.segment.dragging { opacity: 0.4; }
.segment.drop-target { border-color: var(--accent); background: var(--accent-soft); }
.plan-summary { display: flex; gap: 18px; flex-wrap: wrap; margin: 10px 0; }
.stat { background: var(--surface-2); border: 1px solid var(--border); border-radius: 8px; padding: 8px 12px; }
.stat .k { font-size: 12px; color: var(--text-muted); }
.stat .v { font-size: 18px; font-weight: 700; }


#generate-status:not(:empty) { margin-bottom: 14px; }
.badge.yes { color: var(--good); border-color: var(--good); }
.badge.no { color: var(--text-muted); }

.align-controls { align-items: center; }
.readout { color: var(--text-muted); font-size: 13px; }
#chart { width: 100%; height: 240px; display: block; background: var(--surface-2);
  border: 1px solid var(--border); border-radius: 8px; color: var(--text-muted); }

.errors { color: var(--danger); font-size: 13px; margin: 6px 0; }
.errors ul { margin: 4px 0 0 18px; padding: 0; }
.ok-msg { color: var(--good); }

.app-footer { text-align: center; color: var(--text-muted); font-size: 12px; padding: 16px; }
.app-footer a { color: var(--accent); }