/* ============================================================
   Calculateur d'efficacité — Blencia
   ============================================================ */

.calc {
  background: var(--card);
  border: 1px solid var(--line);
  border-radius: var(--r-xl);
  box-shadow: var(--sh-lg);
  overflow: hidden;
}
.calc__grid {
  display: grid;
  grid-template-columns: 1.35fr 1fr;
}

/* — Colonne gauche : inputs — */
.calc__inputs { padding: clamp(26px, 3.4vw, 44px); border-right: 1px solid var(--line); }
.calc__inputs > .eyebrow { margin-bottom: 8px; }
.calc__inputs h3 { font-size: clamp(1.3rem, 2.2vw, 1.7rem); margin-bottom: 8px; }
.calc__hint { color: var(--muted); font-size: .96rem; margin-bottom: 26px; }

.cap-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
}
.cap {
  position: relative;
  text-align: left;
  background: var(--bg);
  border: 1.5px solid var(--line);
  border-radius: var(--r);
  padding: 18px 18px 18px;
  display: flex; flex-direction: column; gap: 8px;
  transition: border-color .25s var(--ease), background .25s, transform .2s, box-shadow .25s;
}
.cap:hover { border-color: var(--accent-deep); transform: translateY(-2px); box-shadow: var(--sh-sm); }
.cap__top { display: flex; align-items: center; justify-content: space-between; }
.cap__ico {
  width: 40px; height: 40px; border-radius: 11px;
  background: var(--card); border: 1px solid var(--line);
  display: grid; place-items: center; color: var(--ink);
  transition: background .25s, color .25s, border-color .25s;
}
.cap__ico svg { width: 21px; height: 21px; }
.cap__check {
  width: 26px; height: 26px; border-radius: 50%;
  border: 1.5px solid var(--line);
  display: grid; place-items: center;
  transition: background .25s, border-color .25s, transform .25s;
  color: transparent;
}
.cap__check svg { width: 15px; height: 15px; }
.cap__title { font-family: "Space Grotesk"; font-weight: 600; font-size: 1rem; color: var(--ink); line-height: 1.2; }
.cap__desc { font-size: .84rem; color: var(--muted); line-height: 1.4; }

.cap.is-active {
  border-color: var(--accent);
  background: var(--accent-wash);
  box-shadow: 0 0 0 1px var(--accent) inset;
}
.cap.is-active .cap__ico { background: var(--accent); border-color: var(--accent); }
.cap.is-active .cap__check { background: var(--accent); border-color: var(--accent); color: var(--ink); transform: scale(1.05); }

.calc__slider { margin-top: 26px; }
.calc__slider .row { display: flex; align-items: baseline; justify-content: space-between; gap: 12px; margin-bottom: 14px; }
.calc__slider label { font-family: "Space Grotesk"; font-weight: 600; font-size: .98rem; color: var(--ink); max-width: 32ch; }
.calc__slider .val {
  font-family: "Space Grotesk"; font-weight: 700; font-size: 1.4rem; letter-spacing: -.02em;
  color: var(--ink); white-space: nowrap;
}
.calc__slider .val span { font-size: .9rem; font-weight: 500; color: var(--muted); margin-left: 4px; }

input[type="range"].rng {
  -webkit-appearance: none; appearance: none;
  width: 100%; height: 6px; border-radius: var(--pill);
  background: var(--line); outline: none; cursor: pointer;
}
input[type="range"].rng::-webkit-slider-thumb {
  -webkit-appearance: none; appearance: none;
  width: 26px; height: 26px; border-radius: 50%;
  background: var(--accent); border: 3px solid var(--card);
  box-shadow: 0 2px 8px rgba(21,21,15,.18), 0 0 0 1px var(--accent-deep);
  transition: transform .15s;
}
input[type="range"].rng::-webkit-slider-thumb:active { transform: scale(1.12); }
input[type="range"].rng::-moz-range-thumb {
  width: 26px; height: 26px; border-radius: 50%; border: 3px solid var(--card);
  background: var(--accent); box-shadow: 0 2px 8px rgba(21,21,15,.18), 0 0 0 1px var(--accent-deep);
}
.calc__slider .ticks { display: flex; justify-content: space-between; margin-top: 8px; font-size: .74rem; color: var(--faint); font-family: "Space Mono", monospace; }

/* — Colonne droite : résultat — */
.calc__result {
  padding: clamp(26px, 3.4vw, 44px);
  background: var(--dark);
  color: var(--on-dark);
  position: relative;
  display: flex; flex-direction: column;
}
.calc__result .eyebrow { color: var(--on-dark-mut); }
.calc__result .eyebrow::before { background: var(--accent); }

.ring-wrap { display: flex; align-items: center; gap: 22px; margin: 8px 0 24px; }
.ring { position: relative; width: 132px; height: 132px; flex: none; }
.ring svg { width: 100%; height: 100%; transform: rotate(-90deg); }
.ring__bg { fill: none; stroke: rgba(255,255,255,.12); stroke-width: 11; }
.ring__fg { fill: none; stroke: var(--accent); stroke-width: 11; stroke-linecap: round; transition: stroke-dashoffset .8s var(--ease); }
.ring__label {
  position: absolute; inset: 0; display: grid; place-items: center; text-align: center;
}
.ring__pct { font-family: "Space Grotesk"; font-weight: 700; font-size: 2rem; letter-spacing: -.03em; color: var(--on-dark); line-height: 1; }
.ring__pct .pre { display:block; font-family:"Space Mono",monospace; font-size: .58rem; letter-spacing:.1em; color: var(--accent); margin-bottom: 3px; font-weight: 400; }
.ring-copy h3 { color: var(--on-dark); font-size: 1.18rem; line-height: 1.25; margin-bottom: 8px; }
.ring-copy p { color: var(--on-dark-mut); font-size: .9rem; }

.calc__metrics { display: grid; grid-template-columns: 1fr 1fr; gap: 14px; margin-bottom: 22px; }
.metric {
  background: rgba(255,255,255,.04);
  border: 1px solid var(--dark-line);
  border-radius: var(--r);
  padding: 18px 18px;
}
.metric .v { font-family: "Space Grotesk"; font-weight: 700; font-size: clamp(1.4rem,3.2vw,1.9rem); letter-spacing: -.02em; color: var(--accent); line-height: 1; }
.metric .v small { font-size: .52em; color: var(--on-dark); font-weight: 500; margin-left: 3px; letter-spacing: 0; }
.metric .l { margin-top: 9px; font-size: .8rem; color: var(--on-dark-mut); font-family: "Space Mono", monospace; letter-spacing: .03em; }

.calc__msg {
  font-size: 1rem; color: var(--on-dark); line-height: 1.5;
  padding: 16px 18px; border-radius: var(--r);
  background: rgba(159,232,112,.10); border: 1px solid rgba(159,232,112,.22);
  margin-bottom: 22px; min-height: 58px;
  display: flex; align-items: center; gap: 12px;
}
.calc__msg svg { width: 20px; height: 20px; color: var(--accent); flex: none; }
.calc__msg.empty { background: rgba(255,255,255,.03); border-color: var(--dark-line); color: var(--on-dark-mut); }
.calc__msg.empty svg { color: var(--on-dark-mut); }

.calc__cta { margin-top: auto; }
.calc__cta .btn { width: 100%; }
.calc__cta .lift-note {
  margin-top: 14px; font-size: .78rem; color: var(--on-dark-mut); text-align: center;
  display: flex; align-items: center; justify-content: center; gap: 7px;
}
.calc__cta .lift-note .d { width: 5px; height: 5px; border-radius: 50%; background: var(--accent); }

/* — Explainer dépliable — */
.calc__explain { border-top: 1px solid var(--line); }
.calc__explain summary {
  list-style: none; cursor: pointer;
  padding: 20px clamp(26px, 3.4vw, 44px);
  display: flex; align-items: center; justify-content: space-between; gap: 14px;
  font-family: "Space Grotesk"; font-weight: 600; font-size: .98rem; color: var(--ink);
}
.calc__explain summary::-webkit-details-marker { display: none; }
.calc__explain summary .chev { width: 20px; height: 20px; color: var(--muted); transition: transform .3s var(--ease); }
.calc__explain[open] summary .chev { transform: rotate(180deg); }
.calc__explain .body {
  padding: 0 clamp(26px, 3.4vw, 44px) 30px;
  display: grid; grid-template-columns: repeat(2, 1fr); gap: 14px 30px;
}
.assumption { display: flex; gap: 12px; align-items: flex-start; font-size: .9rem; color: var(--muted); }
.assumption b { color: var(--ink); font-family: "Space Grotesk"; font-weight: 600; display: block; }
.assumption .ai { width: 30px; height: 30px; border-radius: 8px; background: var(--panel); display: grid; place-items: center; flex: none; }
.assumption .ai svg { width: 16px; height: 16px; color: var(--accent-deep); }
.calc__explain .disclaimer {
  grid-column: 1 / -1; margin-top: 8px; padding-top: 16px; border-top: 1px solid var(--line);
  font-size: .82rem; color: var(--faint); font-style: italic;
}

/* rate editor inside explainer */
.rate-edit { display: flex; align-items: center; gap: 8px; margin-top: 6px; }
.rate-edit input {
  width: 78px; font-family: "Space Grotesk"; font-weight: 600; font-size: .95rem; color: var(--ink);
  padding: 7px 10px; border: 1px solid var(--line); border-radius: 9px; background: var(--bg);
}
.rate-edit input:focus { outline: none; border-color: var(--accent-deep); box-shadow: 0 0 0 3px var(--accent-glow); }
.rate-edit span { font-size: .85rem; color: var(--muted); }

@media (max-width: 960px){
  .calc__grid { grid-template-columns: 1fr; }
  .calc__inputs { border-right: 0; border-bottom: 1px solid var(--line); }
  .calc__explain .body { grid-template-columns: 1fr; }
}
@media (max-width: 520px){
  .cap-grid { grid-template-columns: 1fr; }
  .calc__metrics { grid-template-columns: 1fr; }
  .ring-wrap { flex-direction: column; align-items: flex-start; }
}

/* Sticky result on mobile */
@media (max-width: 960px){
  .calc__result { position: sticky; bottom: 0; z-index: 5; box-shadow: 0 -10px 30px rgba(21,21,15,.18); }
}