/* RECATOOLS — Exponent / Power Calculator */
.ep-wrap { padding: 1.25rem; }
.ep-inputs { display: flex; align-items: center; justify-content: center; gap: .6rem; flex-wrap: wrap; }
.ep-inputs input { width: 110px; padding: .65rem .8rem; border: 1px solid #ebebeb; border-radius: 10px; font-size: 1.2rem; text-align: center; font-variant-numeric: tabular-nums; }
.ep-inputs input:focus { outline: none; border-color: #4f46e5; box-shadow: 0 0 0 3px rgba(79,70,229,.15); }
.ep-label { font-size: .68rem; font-weight: 700; text-transform: uppercase; letter-spacing: .05em; color: #9b968d; display: block; text-align: center; margin-bottom: .25rem; }
.ep-caret { font-size: 1.6rem; color: #6366f1; font-weight: 700; align-self: flex-end; padding-bottom: .35rem; }
.ep-error { margin: 1rem 0 0; padding: .8rem 1rem; background: #fef2f2; border-left: 4px solid #ef4444; border-radius: 10px; color: #991b1b; font-size: .9rem; }
.ep-result { margin-top: 1.5rem; }
.ep-main { text-align: center; font-size: 1.5rem; color: #1a1814; }
.ep-expr sup { font-size: .65em; }
.ep-main strong { color: #4338ca; }
.ep-work { margin-top: 1.5rem; }
.ep-work-head { font-size: .72rem; font-weight: 700; text-transform: uppercase; letter-spacing: .05em; color: #7c3aed; margin-bottom: .5rem; }
.ep-rules { margin: 0; padding-left: 1.3rem; display: grid; gap: .4rem; }
.ep-rules li { font-size: .9rem; color: #4b4b4b; line-height: 1.5; }
.ep-rules b { color: #4338ca; }
.ep-rules sup { font-size: .7em; }