/* UNomaha Fall 2026 - lab calculator suite.
   Inherits the shared editorial dark palette from style.css. */

.calc-wrap { max-width: 1100px; margin: 0 auto; padding: 0 24px 80px; }

.calc-head { padding: 34px 0 6px; }
.calc-kicker {
  font-family: 'Inter', system-ui, sans-serif; font-size: .72rem; font-weight: 700;
  letter-spacing: .18em; text-transform: uppercase; color: var(--teal); margin: 0 0 6px;
}
.calc-head h1 { margin: 0 0 .25em; }
.calc-head p { color: var(--ink-2); max-width: 70ch; margin: 0 0 4px; }

/* ---- tab strip ---- */
.calc-tabs {
  display: flex; flex-wrap: wrap; gap: 6px;
  margin: 22px 0 20px; padding-bottom: 14px; border-bottom: 1px solid var(--rule);
}
.calc-tab {
  font-family: 'Inter', system-ui, sans-serif; font-size: .82rem; font-weight: 600;
  padding: 7px 13px; border-radius: 999px; cursor: pointer;
  background: var(--bg-2); color: var(--ink-2);
  border: 1px solid var(--rule); transition: .14s;
}
.calc-tab:hover { color: var(--ink); border-color: var(--ink-3); }
.calc-tab.active {
  background: var(--teal); color: #08201d; border-color: var(--teal);
}

.calc-panel { display: none; }
.calc-panel.active { display: block; }

/* ---- card ---- */
.calc-card {
  background: var(--bg-2); border: 1px solid var(--rule); border-radius: 14px;
  padding: 22px 24px; box-shadow: var(--shadow); margin-bottom: 20px;
}
.calc-card h2 { margin: 0 0 .25em; font-size: 1.5rem; }
.calc-card > p.lede { color: var(--ink-2); margin: 0 0 18px; max-width: 72ch; }

.calc-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(160px, 1fr)); gap: 14px; }

.calc-field { display: flex; flex-direction: column; gap: 5px; min-width: 0; }
.calc-field label {
  font-family: 'Inter', system-ui, sans-serif; font-size: .7rem; font-weight: 700;
  letter-spacing: .09em; text-transform: uppercase; color: var(--ink-3);
}
.calc-field input, .calc-field select {
  background: var(--bg-3); color: var(--ink); border: 1px solid var(--rule);
  border-radius: 9px; padding: 10px 11px; font-size: 1rem; width: 100%;
  font-family: 'JetBrains Mono', ui-monospace, monospace;
}
.calc-field select { font-family: 'Inter', system-ui, sans-serif; }
.calc-field input:focus, .calc-field select:focus {
  outline: none; border-color: var(--teal); box-shadow: 0 0 0 3px rgba(108,193,182,.15);
}
.calc-field input.solve-target {
  background: rgba(108,193,182,.10); border-color: var(--teal); color: var(--teal);
}
.calc-field .hint { font-size: .74rem; color: var(--ink-3); font-family: 'Inter', sans-serif; }

/* ---- radio row (solve-for selector) ---- */
.calc-solve { display: flex; flex-wrap: wrap; gap: 6px; margin: 0 0 16px; }
.calc-solve button {
  font-family: 'Inter', system-ui, sans-serif; font-size: .76rem; font-weight: 600;
  padding: 5px 11px; border-radius: 7px; cursor: pointer;
  background: var(--bg-3); color: var(--ink-3); border: 1px solid var(--rule);
}
.calc-solve button.active { background: var(--amber); color: #241704; border-color: var(--amber); }

/* ---- result ---- */
.calc-out {
  margin-top: 18px; padding: 16px 18px; border-radius: 11px;
  background: var(--bg-3); border: 1px solid var(--rule); border-left: 3px solid var(--teal);
}
.calc-out .big {
  font-family: 'JetBrains Mono', ui-monospace, monospace;
  font-size: 1.55rem; font-weight: 500; color: var(--teal); line-height: 1.25;
  word-break: break-word;
}
.calc-out .big.warn { color: var(--rose); }
.calc-out .sub { color: var(--ink-2); font-size: .92rem; margin-top: 6px; }

.calc-work {
  margin-top: 12px; padding-top: 12px; border-top: 1px dashed var(--rule);
  font-family: 'JetBrains Mono', ui-monospace, monospace;
  font-size: .84rem; color: var(--ink-2); white-space: pre-wrap; line-height: 1.65;
}
.calc-work b { color: var(--amber-2); font-weight: 500; }

.calc-note {
  margin-top: 14px; padding: 12px 14px; border-radius: 9px;
  background: rgba(230,168,92,.07); border: 1px solid rgba(230,168,92,.25);
  color: var(--ink-2); font-size: .89rem;
}
.calc-note b { color: var(--amber-2); }

/* ---- tables ---- */
.calc-table { width: 100%; border-collapse: collapse; margin: 14px 0 4px; font-size: .88rem; }
.calc-table th, .calc-table td {
  border-bottom: 1px solid var(--rule); padding: 7px 10px; text-align: left;
}
.calc-table th {
  font-family: 'Inter', system-ui, sans-serif; font-size: .7rem; font-weight: 700;
  letter-spacing: .08em; text-transform: uppercase; color: var(--ink-3);
}
.calc-table td { font-family: 'JetBrains Mono', ui-monospace, monospace; color: var(--ink); }
.calc-table td:first-child { font-family: 'Inter', sans-serif; color: var(--ink-2); }
.calc-table tr:hover td { background: rgba(255,255,255,.02); }
.calc-scroll { overflow-x: auto; }

.calc-chiprow { display: flex; flex-wrap: wrap; gap: 6px; margin: 10px 0 0; }
.calc-chip {
  font-family: 'Inter', sans-serif; font-size: .74rem; padding: 4px 10px;
  border-radius: 999px; cursor: pointer;
  background: var(--bg-3); border: 1px solid var(--rule); color: var(--ink-2);
}
.calc-chip:hover { border-color: var(--teal); color: var(--teal); }

@media (max-width: 700px) {
  .calc-wrap { padding: 0 14px 60px; }
  .calc-card { padding: 18px 15px; border-radius: 11px; }
  .calc-grid { grid-template-columns: 1fr 1fr; }
  .calc-out .big { font-size: 1.25rem; }
}
@media (max-width: 420px) {
  .calc-grid { grid-template-columns: 1fr; }
}