/* ============================================================
   Calculator Suite — Core Design Tokens & Shared Components
   Scoped under .calc-suite to avoid WordPress theme conflicts
   ============================================================ */

/* ---------- DESIGN TOKENS ---------- */
.calc-suite {
  --blue:#0157ff;--blue-dark:#0049c0;--blue-darker:#013497;
  --blue-tint:#eaf1ff;--blue-tint-2:#f6faff;--blue-line:#aac7fe;
  --indigo:#3a33d1;--indigo-dark:#2c269f;--indigo-tint:#ecebfb;
  --navy:#00143d;--ink:#151515;--muted:#515260;--muted-2:#898f9e;
  --line:#c1c7d3;--line-soft:#e2e5ed;--panel:#f4f5f9;--page:#ffffff;
  --green:#2b7855;--green-bright:#3fc17b;--red:#d2191b;--red-tint:#feedeb;--gold:#efc138;
  --c-blue:#0157ff;--c-navy:#00143d;--c-sky:#5b9bff;
  --c-green:#2b9e5f;--c-lime:#a9e6b6;--c-cyan:#1fc8d6;
  --c-coral:#d9786a;--c-teal:#2e8b7a;
  --r:4px;--r-card:8px;--r-pill:9999px;
  --shadow:0 1px 3px rgba(16,24,40,.06), 0 10px 30px rgba(16,24,40,.06);
  --sans:'Source Sans 3',system-ui,-apple-system,'Segoe UI',Roboto,Arial,sans-serif;
  --display:'Oswald','Source Sans 3',system-ui,-apple-system,Arial,sans-serif;

  font-family: var(--sans);
  color: var(--ink);
  line-height: 1.5;
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
}

.calc-suite *, .calc-suite *::before, .calc-suite *::after {
  box-sizing: border-box;
}

.calc-suite a { color: var(--blue); }
.calc-suite h1,
.calc-suite h2,
.calc-suite h3,
.calc-suite h4 { font-family: var(--display); color: var(--navy); margin: 0; }

/* ============================================================
   CARD + SPLIT LAYOUT
   ============================================================ */
.calc-suite .br-card {
  background: #fff;
  border-radius: var(--r-card);
  overflow: hidden;
  max-width: 840px;
  width: 100%;
  box-shadow: var(--shadow);
  margin: 0 auto;
}
.calc-suite .br-card__head { padding: 20px 16px 0; }
.calc-suite .br-card__title {
  font-family: var(--display);
  font-size: 1.375rem;
  font-weight: 700;
  color: var(--navy);
}
.calc-suite .br-split {
  display: grid;
  grid-template-columns: minmax(0,1fr) minmax(0,1fr);
  gap: 0;
  align-items: stretch;
}
.calc-suite .br-split__inputs  { padding: 22px 16px; min-width: 0; }
.calc-suite .br-split__results { padding: 22px 16px; border-left: 1px solid var(--line-soft); min-width: 0; }

/* ============================================================
   FORM CONTROLS
   ============================================================ */
.calc-suite .br-field { margin-bottom: 16px; }
.calc-suite .br-field:last-child { margin-bottom: 0; }
.calc-suite .br-label {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: .875rem;
  font-weight: 500;
  color: var(--muted);
  margin-bottom: 6px;
}
.calc-suite .br-label .opt { font-weight: 400; color: var(--muted); }
.calc-suite .br-control {
  display: flex;
  align-items: center;
  border: 1px solid var(--line);
  border-radius: var(--r);
  background: #fff;
  transition: border-color .12s, box-shadow .12s;
}
.calc-suite .br-control:focus-within {
  border-color: var(--blue);
  box-shadow: 0 0 0 3px rgba(1,87,255,.16);
}
.calc-suite .br-control input {
  border: 0;
  outline: 0;
  background: transparent;
  font: inherit;
  font-size: 1rem;
  font-weight: 600;
  color: var(--ink);
  padding: 11px 12px;
  width: 100%;
}
.calc-suite .br-control input::placeholder { color: var(--muted-2); font-weight: 400; }
.calc-suite .br-control input[type=number] { -moz-appearance: textfield; }
.calc-suite .br-control input::-webkit-outer-spin-button,
.calc-suite .br-control input::-webkit-inner-spin-button { -webkit-appearance: none; margin: 0; }
.calc-suite .br-affix {
  padding: 0 12px;
  color: var(--muted);
  font-weight: 600;
  font-size: .9375rem;
  white-space: nowrap;
  display: flex;
  align-items: center;
  align-self: stretch;
}
.calc-suite .br-affix--suf { border-left: 1px solid var(--line-soft); }

/* split field row */
.calc-suite .br-row2 { display: grid; grid-template-columns: 1fr 96px; gap: 10px; margin-bottom: 16px; }
.calc-suite .br-row2:last-child { margin-bottom: 0; }
.calc-suite .br-row2--even { grid-template-columns: 1fr 1fr; }
.calc-suite .br-row2 .br-field { display: flex; flex-direction: column; margin-bottom: 0; }
.calc-suite .br-row2 .br-field .br-control { margin-top: auto; }
.calc-suite .br-row2 .br-label { align-items: flex-start; }

/* segmented toggle */
.calc-suite .br-seg {
  display: inline-flex;
  border: 1px solid var(--line);
  border-radius: var(--r);
  overflow: hidden;
  background: #fff;
}
.calc-suite .br-seg button {
  appearance: none;
  border: 0;
  background: #fff;
  font: inherit;
  font-weight: 600;
  font-size: .95rem;
  color: var(--blue);
  padding: 10px 22px;
  cursor: pointer;
  border-right: 1px solid var(--line-soft);
}
.calc-suite .br-seg button:last-child { border-right: 0; }
.calc-suite .br-row2 .br-seg { display: flex; width: 100%; margin-top: auto; }
.calc-suite .br-row2 .br-seg button { flex: 1; text-align: center; padding-left: 0; padding-right: 0; }
.calc-suite .br-seg button[aria-selected=true] {
  color: var(--blue);
  box-shadow: inset 0 0 0 2px var(--blue);
  border-radius: var(--r);
  background: var(--blue-tint-2);
}

/* unit pill toggle */
.calc-suite .br-switch-row { display: inline-flex; align-items: center; gap: 11px; }
.calc-suite .usw-lab { font-size: .9rem; font-weight: 500; color: var(--muted-2); transition: color .12s; white-space: nowrap; }
.calc-suite .usw-lab.is-on { color: var(--navy); }
.calc-suite .usw {
  position: relative;
  flex: none;
  width: 54px;
  height: 30px;
  padding: 0;
  border: 0;
  cursor: pointer;
  border-radius: 9999px;
  background: var(--blue);
  transition: background .18s;
}
.calc-suite .usw:focus-visible { outline: 3px solid rgba(1,87,255,.45); outline-offset: 2px; }
.calc-suite .usw-knob {
  position: absolute;
  top: 3px;
  left: 3px;
  width: 24px;
  height: 24px;
  border-radius: 50%;
  background: #fff;
  box-shadow: 0 1px 3px rgba(16,24,40,.35);
  transition: left .18s cubic-bezier(.2,.7,.2,1);
}
.calc-suite .usw[aria-checked="true"] .usw-knob { left: 27px; }

/* ============================================================
   BUTTONS
   ============================================================ */
.calc-suite .br-btn {
  appearance: none;
  border: 1.5px solid transparent;
  cursor: pointer;
  font-family: var(--display);
  font-weight: 700;
  font-size: .6875rem;
  letter-spacing: .05em;
  text-transform: uppercase;
  line-height: 1;
  padding: 9px 20px;
  border-radius: var(--r-pill);
  background: var(--indigo);
  color: #fff;
  transition: background .14s, transform .04s;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 7px;
  text-decoration: none;
}
.calc-suite .br-btn:hover { background: var(--indigo-dark); }
.calc-suite .br-btn:active { transform: translateY(1px); }
.calc-suite .br-btn--block { width: 100%; }
.calc-suite .br-btn--reset {
  appearance: none;
  border: 0;
  background: none;
  cursor: pointer;
  font-family: var(--display);
  font-weight: 700;
  font-size: .6875rem;
  letter-spacing: .05em;
  text-transform: uppercase;
  color: var(--muted);
  padding: 9px 8px;
  flex: none;
  transition: color .14s;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  line-height: 1;
}
.calc-suite .br-btn--reset svg { flex: none; }
.calc-suite .br-btn--reset:hover { color: var(--indigo); }
.calc-suite .br-btn:focus-visible,
.calc-suite .br-btn--reset:focus-visible { outline: 3px solid rgba(58,51,209,.4); outline-offset: 2px; }

/* ============================================================
   ERROR STATES
   ============================================================ */
.calc-suite .br-control.has-error { border-color: var(--red); box-shadow: 0 0 0 3px rgba(210,25,27,.12); }
.calc-suite .br-error { font-size: .75rem; color: var(--red); margin-top: 5px; display: none; }
.calc-suite .br-error.show { display: block; }

/* ============================================================
   PLACEHOLDER STATE
   ============================================================ */
.calc-suite .results-placeholder {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  min-height: 280px;
  text-align: center;
  color: var(--muted-2);
  gap: 12px;
  padding: 40px 20px;
}
.calc-suite .results-placeholder svg { opacity: .35; }
.calc-suite .results-placeholder p { font-size: .95rem; max-width: 26ch; line-height: 1.5; }
.calc-suite .results-live { display: none; }

/* ============================================================
   RESPONSIVE
   ============================================================ */
@media (max-width: 860px) {
  .calc-suite .br-split { grid-template-columns: 1fr; }
  .calc-suite .br-split__inputs,
  .calc-suite .br-split__results { padding: 16px 12px; }
  .calc-suite .br-split__results { border-left: 0; border-top: 1px solid var(--line-soft); }
  .calc-suite .br-row2,
  .calc-suite .br-row2--even { grid-template-columns: 1fr; }
}
@media (max-width: 480px) {
  .calc-suite .br-seg button { padding: 10px 16px; }
}
@media (prefers-reduced-motion: reduce) {
  .calc-suite * { animation: none !important; transition: none !important; }
}