/* Scientific calculator: display, keypad and history. */
.sc-wrap { display: grid; grid-template-columns: minmax(0, 1.5fr) minmax(0, 1fr); gap: 18px; align-items: start; }
@media (max-width: 820px) { .sc-wrap { grid-template-columns: 1fr; } }
.sc { display: grid; gap: 12px; min-width: 0; }
.sc-bar { display: flex; flex-wrap: wrap; gap: 8px; align-items: center; justify-content: space-between; }
.sc-bar .row { gap: 4px; }
#sc-2nd[aria-pressed='true'] { background: var(--accent); border-color: transparent; color: #fff; }
.sc-screen { display: grid; gap: 2px; padding: 12px 16px; text-align: right; }
.sc-status { min-height: 22px; }
#sc-expr { font-family: var(--mono); font-size: 1.25rem; text-align: right; padding: 6px 12px; min-height: 46px; }
.sc-result { display: block; min-height: 1.3em; font-size: clamp(1.6rem, 1.2rem + 2vw, 2.3rem); font-weight: 800; line-height: 1.2; font-variant-numeric: tabular-nums; color: var(--ink); word-break: break-all; }
.sc-result[data-kind='preview'] { color: var(--muted); }
.sc-result[data-kind='error'] { color: var(--err); font-size: 1.05rem; word-break: normal; }
.sc-keys { display: grid; grid-template-columns: repeat(5, minmax(0, 1fr)); gap: 8px; }
.sc-keys .btn { min-height: 52px; padding: 0 2px; gap: 0; border-radius: 14px; font-size: 1.1rem; }
.sc-keys .sc-fn { font-size: 0.95rem; background: var(--glass-soft); }
.sc-keys .sc-op { color: var(--accent-ink); font-size: 1.25rem; }
.sc-keys .sc-ctl { color: var(--err); }
.sc-keys sup { position: relative; top: -0.45em; font-size: 0.65em; line-height: 0; }
.sc-side { display: grid; gap: 10px; min-width: 0; }
.sc-side h3 { margin: 0; font-size: 1rem; }
.sc-history { list-style: none; margin: 0; padding: 0; display: grid; gap: 6px; max-height: 360px; overflow: auto; }
.sc-hist { width: 100%; display: flex; gap: 8px; align-items: baseline; padding: 8px 12px; border-radius: 12px; border: 1px solid var(--line); background: var(--glass-soft); color: var(--ink); font: inherit; font-size: 0.92rem; cursor: pointer; text-align: left; }
.sc-hist:hover, .sc-hist:focus-visible { border-color: var(--accent); }
.sc-hist-e { flex: 1; min-width: 0; font-family: var(--mono); color: var(--muted); overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.sc-hist strong { white-space: nowrap; font-variant-numeric: tabular-nums; }