/* Resources section: calculators, reference tables, refrigerant pages. Loaded after styles.css and codes.css. */
.res-search { display: block; width: 100%; box-sizing: border-box; font: inherit; font-size: 17px; padding: 13px 16px; border: 1px solid var(--border); border-radius: 12px; background: #fff; color: var(--text); margin: 6px 0 22px; }
.res-search:focus { outline: none; border-color: var(--blue); box-shadow: 0 0 0 4px rgba(21,101,192,.15); }
.res-group { margin: 26px 0 8px; }
.res-group h2 { margin: 0 0 4px; }
.rtiles { display: grid; grid-template-columns: repeat(3, 1fr); gap: 12px; margin: 10px 0 8px; }
.rtile { display: flex; flex-direction: column; gap: 3px; padding: 14px 16px; border: 1px solid var(--border); border-radius: 12px; background: #fff; text-decoration: none; color: var(--text); transition: transform .2s ease, box-shadow .2s ease, border-color .2s; }
.rtile:hover { border-color: var(--blue); transform: translateY(-2px); box-shadow: 0 10px 24px -14px rgba(20,35,92,.5); }
.rtile strong { color: var(--navy); font-size: 16px; line-height: 1.3; }
.rtile span { color: var(--muted); font-size: 14px; line-height: 1.4; }
.rtiles.small { grid-template-columns: repeat(auto-fill, minmax(150px, 1fr)); }
.rtiles.small .rtile { padding: 10px 14px; }
.rtiles.small .rtile strong { font-size: 15px; }
.rtile[hidden], .res-group[hidden] { display: none; }
.res-none { color: var(--muted); }

/* tables */
.res-table th, .res-table td { font-size: 14px; padding: 7px 10px; }
.res-table td:first-child { font-weight: 600; white-space: nowrap; }
.res-table tbody tr:nth-child(even) td { background: #f8f9fb; }
.res-table.long { max-height: 560px; overflow: auto; }
.res-table.long thead th { position: sticky; top: 0; z-index: 1; }
table.kv th { width: 36%; background: var(--bg-alt); color: var(--navy); font-size: 14px; white-space: normal; }
table.kv td { font-size: 15px; }
.res-points { margin: 10px 0; padding-left: 20px; }
.res-points li { margin-bottom: 6px; }
.res-note { color: var(--muted); font-size: 14px; margin: 6px 0 4px; }
.res-table-search { margin: 6px 0 10px; max-width: 360px; padding: 9px 12px; font-size: 15px; }

/* calculators */
.calc { margin: 14px 0 22px; }
.rc-form { background: #fff; border: 1px solid var(--border); border-radius: 14px; padding: 16px 18px 6px; }
.rc-field { margin-bottom: 14px; }
.rc-field[hidden] { display: none; }
.rc-label { display: block; font-size: 14px; color: var(--muted); margin-bottom: 6px; }
.rc-input { display: block; width: 100%; box-sizing: border-box; font: inherit; font-size: 17px; padding: 11px 12px; border: 1px solid var(--border); border-radius: 10px; background: #fff; color: var(--text); }
.rc-input:focus { outline: none; border-color: var(--blue); box-shadow: 0 0 0 4px rgba(21,101,192,.15); }
.rc-hint { font-size: 13px; color: var(--muted); margin-top: 5px; line-height: 1.4; }
.rc-chips { display: flex; flex-wrap: wrap; gap: 8px; }
.rc-chip { font: inherit; font-size: 15px; padding: 8px 14px; border: 1px solid var(--border); background: var(--bg-alt); color: var(--text); border-radius: 999px; cursor: pointer; }
.rc-chip:hover { border-color: var(--blue); }
.rc-chip[aria-pressed="true"] { background: var(--blue); border-color: var(--blue); color: #fff; font-weight: 600; }
.rc-result { margin-top: 14px; border: 2px solid var(--blue); background: var(--blue-soft); border-radius: 14px; padding: 14px 18px; }
.rc-result.rc-warn { border-color: #f5b84b; background: #fff8ec; }
.rc-result.rc-bad { border-color: #d32f2f; background: #fdecec; }
.rc-result.rc-wait { border-color: var(--border); background: var(--bg-alt); }
.rc-h { font-weight: 700; color: var(--navy); margin-bottom: 6px; }
.rc-big { font-size: 28px; font-weight: 800; color: var(--blue-dark); margin-bottom: 8px; line-height: 1.25; }
.rc-row { display: flex; justify-content: space-between; gap: 14px; padding: 5px 0; border-bottom: 1px solid rgba(20,35,92,.08); }
.rc-row:last-of-type { border-bottom: 0; }
.rc-rl { flex: 1; }
.rc-rv { text-align: right; }
.rc-strong { font-weight: 800; }
.rc-notes { margin: 10px 0 0; padding-left: 20px; color: #3a404b; font-size: 14px; line-height: 1.5; }
.rc-msg { margin: 0; color: var(--muted); }
.rc-safety { font-size: 13px; color: #7a4b00; background: #fff8ec; border: 1px solid #f5d9a8; border-radius: 10px; padding: 10px 14px; margin: 12px 0 0; }

@media (max-width: 760px) { .rtiles { grid-template-columns: 1fr 1fr; } .rc-big { font-size: 24px; } }
@media (max-width: 520px) { .rtiles { grid-template-columns: 1fr; } .rtiles.small { grid-template-columns: 1fr 1fr; } .rc-row { flex-direction: column; gap: 0; } .rc-rv { text-align: left; } }