/* ==========================================================================
   Calculators — UI styling only (logic: calc-logic.js, binding: calc-ui.js)
   ========================================================================== */

.calc {
  display: flex; flex-wrap: wrap; align-items: stretch;
  background: var(--c-white); border: 1px solid var(--c-line); border-radius: var(--r-xl);
  box-shadow: var(--shadow-md); overflow: hidden; scroll-margin-top: 150px;
}
.calc__inputs { flex: 1.25 1 380px; display: flex; flex-direction: column; gap: 26px; padding: clamp(24px, 3.5vw, 40px); }
.calc__head { display: flex; flex-direction: column; gap: 8px; }
.calc__head h3 { font-size: clamp(1.3rem, 2vw, 1.6rem); }
.calc__tag { align-self: flex-start; font-size: .72rem; font-weight: 800; letter-spacing: .14em; text-transform: uppercase; padding: 5px 11px; border-radius: var(--r-pill); background: var(--c-green-100); color: var(--c-green); }
.calc__tag--insurance { background: var(--c-primary-100); color: var(--c-primary); }
.calc__tag--planning { background: var(--c-gold-100); color: var(--c-gold-ink); }

.calc__results {
  flex: 1 1 320px; display: flex; flex-direction: column; gap: 22px; justify-content: center;
  padding: clamp(24px, 3.5vw, 40px);
  background: radial-gradient(500px 300px at 100% 0%, rgba(201,162,39,.2), transparent 60%), linear-gradient(160deg, var(--c-primary-900), var(--c-primary));
  color: rgba(255,255,255,.8);
}

/* Field */
.calc-field { display: flex; flex-direction: column; gap: 12px; }
.calc-field__head { display: flex; justify-content: space-between; align-items: center; gap: 12px; flex-wrap: wrap; }
.calc-field__head label { font-weight: 700; color: var(--c-ink); font-size: .96rem; }
.calc-field__value {
  display: flex; align-items: center; gap: 4px; padding: 6px 12px; min-width: 140px;
  border-radius: 12px; border: 1.5px solid var(--c-line); background: var(--c-soft);
  transition: border-color .25s, box-shadow .25s, background .25s;
}
.calc-field__value:focus-within { border-color: var(--c-green); background: var(--c-white); box-shadow: 0 0 0 4px rgba(11,122,83,.12); }
.calc-field__unit { font-weight: 700; color: var(--c-muted); font-size: .92rem; }
.calc-input {
  flex: 1; min-width: 0; width: 100%; border: 0; background: transparent; outline: none;
  font-family: var(--font); font-size: 1.05rem; font-weight: 800; color: var(--c-primary); text-align: right;
  -moz-appearance: textfield;
}
.calc-input::-webkit-outer-spin-button, .calc-input::-webkit-inner-spin-button { -webkit-appearance: none; margin: 0; }
.calc-select {
  font-family: var(--font); font-size: 1rem; font-weight: 700; color: var(--c-primary);
  padding: 12px 14px; border-radius: 12px; border: 1.5px solid var(--c-line); background: var(--c-soft); width: 100%; cursor: pointer;
}
.calc-select:focus { outline: none; border-color: var(--c-green); box-shadow: 0 0 0 4px rgba(11,122,83,.12); }

.calc-range {
  --fill: 50%;
  -webkit-appearance: none; appearance: none; width: 100%; height: 8px; border-radius: 8px; cursor: pointer; margin: 6px 0;
  background: linear-gradient(90deg, var(--c-green) 0 var(--fill), var(--c-line) var(--fill) 100%);
}
.calc-range::-webkit-slider-thumb { -webkit-appearance: none; width: 24px; height: 24px; border-radius: 50%; background: var(--c-white); border: 6px solid var(--c-green); box-shadow: 0 4px 12px rgba(11,122,83,.35); transition: transform .2s; }
.calc-range::-webkit-slider-thumb:hover { transform: scale(1.12); }
.calc-range::-moz-range-thumb { width: 14px; height: 14px; border-radius: 50%; background: var(--c-white); border: 6px solid var(--c-green); box-shadow: 0 4px 12px rgba(11,122,83,.35); }
.calc-range:focus-visible { outline: 3px solid var(--c-gold); outline-offset: 6px; }
.calc-field__scale { display: flex; justify-content: space-between; font-size: .76rem; color: var(--c-muted); font-weight: 600; margin-top: -6px; }

.calc-field__error { display: none; font-size: .82rem; font-weight: 700; color: #B03A2E; }
.calc-field.has-error .calc-field__value { border-color: #C0392B; background: #FDF2F1; }
.calc-field.has-error .calc-field__error { display: block; }

.calc-row { display: flex; gap: 20px; flex-wrap: wrap; }
.calc-row > .calc-field { flex: 1 1 200px; }

/* Results */
.calc-result-hero { display: flex; flex-direction: column; gap: 4px; }
.calc-result-hero__label { font-size: .8rem; font-weight: 800; letter-spacing: .14em; text-transform: uppercase; color: var(--c-gold-300); }
.calc-result-hero__value { font-size: clamp(2rem, 3.6vw, 2.7rem); font-weight: 800; letter-spacing: -.04em; line-height: 1.05; color: var(--c-white); word-break: break-word; }
.calc-result-hero__note { font-size: .88rem; color: rgba(255,255,255,.7); }

.calc-visual { display: flex; align-items: center; gap: 22px; flex-wrap: wrap; }
.calc-donut {
  --share: .5;
  position: relative; flex: 0 0 150px; height: 150px; border-radius: 50%;
  background: conic-gradient(var(--c-primary-500) 0 calc(var(--share) * 360deg), var(--c-green-300) calc(var(--share) * 360deg) 360deg);
  transition: background .4s;
  box-shadow: 0 16px 40px -14px rgba(0,0,0,.6);
}
.calc-donut::after { content: ""; position: absolute; inset: 24px; border-radius: 50%; background: var(--c-primary-900); box-shadow: inset 0 0 20px rgba(0,0,0,.35); }
.calc-donut--gold { background: conic-gradient(var(--c-green-300) 0 calc(var(--share) * 360deg), var(--c-gold) calc(var(--share) * 360deg) 360deg); }

.calc-legend { list-style: none; flex: 1 1 160px; display: flex; flex-direction: column; gap: 12px; }
.calc-legend li { display: flex; flex-direction: column; gap: 2px; font-size: .86rem; }
.calc-legend__key { display: flex; align-items: center; gap: 8px; }
.calc-legend__key::before { content: ""; width: 12px; height: 12px; border-radius: 4px; background: var(--dot, var(--c-primary-500)); }
.calc-legend__key--a { --dot: var(--c-primary-500); }
.calc-legend__key--b { --dot: var(--c-green-300); }
.calc-legend__key--c { --dot: var(--c-gold); }
.calc-legend strong { font-size: 1.1rem; color: var(--c-white); letter-spacing: -.01em; }

.calc-outs { list-style: none; display: flex; flex-direction: column; border-top: 1px solid rgba(255,255,255,.12); }
.calc-outs li { display: flex; justify-content: space-between; align-items: baseline; gap: 12px; padding: 12px 0; border-bottom: 1px solid rgba(255,255,255,.12); font-size: .92rem; }
.calc-outs strong { color: var(--c-white); font-size: 1.02rem; text-align: right; }
.calc-outs .is-negative, .calc-legend .is-negative, .calc-result-hero__value.is-negative { color: #FF9C8F; }

.calc-meter { display: flex; flex-direction: column; gap: 8px; }
.calc-meter__track { height: 12px; border-radius: 12px; background: rgba(255,255,255,.12); overflow: hidden; }
.calc-meter__fill { height: 100%; width: calc(var(--share, 0) * 100%); border-radius: 12px; background: linear-gradient(90deg, var(--c-green-300), var(--c-gold-300)); transition: width .5s var(--ease); }
.calc-meter__labels { display: flex; justify-content: space-between; font-size: .8rem; color: rgba(255,255,255,.7); }

.calc__cta { display: flex; gap: 10px; flex-wrap: wrap; }
.calc__disclaimer { font-size: .76rem; line-height: 1.55; color: rgba(255,255,255,.6); }

.calc.is-invalid .calc__results .calc-result-hero__value { opacity: .45; }
.calc__invalid-note { display: none; font-size: .86rem; font-weight: 700; color: #FFB3A8; }
.calc.is-invalid .calc__invalid-note { display: block; }

/* Update flash (class toggled on each recalculation) */
.calc-flash { animation: calc-flash .45s var(--ease); }
@keyframes calc-flash { 0% { opacity: .35; transform: translateY(4px); } 100% { opacity: 1; transform: none; } }

/* ---------- Calculator centre ---------- */
.calc-filters { display: flex; flex-wrap: wrap; gap: 10px; justify-content: center; }
.calc-filter {
  font-family: var(--font); font-size: .95rem; font-weight: 700; cursor: pointer;
  padding: 11px 20px; border-radius: var(--r-pill); border: 1.5px solid var(--c-line); background: var(--c-white); color: var(--c-ink);
  transition: background .25s, color .25s, border-color .25s;
}
.calc-filter:hover { border-color: var(--c-green); color: var(--c-green); }
.calc-filter.is-active { background: var(--c-primary); border-color: var(--c-primary); color: var(--c-white); }

.calc-index { display: flex; flex-wrap: wrap; gap: 14px; }
.calc-index__item { flex: 1 1 calc(25% - 14px); min-width: 210px; display: flex; gap: 14px; align-items: center; padding: 16px 18px; border-radius: var(--r-md); border: 1px solid var(--c-line); background: var(--c-white); text-decoration: none; color: var(--c-ink); font-weight: 700; transition: border-color .25s, transform .3s var(--ease), box-shadow .3s; }
.calc-index__item:hover { border-color: var(--c-green); transform: translateY(-3px); box-shadow: var(--shadow-md); color: var(--c-ink); }
.calc-index__item .icon-slot { width: 44px; height: 44px; border-radius: 12px; font-size: .85rem; }

.calc-list { display: flex; flex-direction: column; gap: 36px; }
.is-hidden { display: none !important; }

@media (max-width: 640px) {
  .calc-donut { flex-basis: 120px; height: 120px; }
  .calc-donut::after { inset: 20px; }
  .calc-field__value { min-width: 120px; }
}