:root{
  --calc-primary:#069;
  --calc-bg:#fff;
  --calc-text:#1f2937;
  --calc-muted:#6b7280;
  --calc-border:#e5e7eb;
  --calc-radius:18px;
  --calc-shadow:0 8px 24px rgba(0,0,0,.06);
  --calc-control-h:56px;
  --thumb:18px;
}

.calc-block{ max-width:1116px; margin:40px auto; padding:0 16px; }
.calc-title{ margin:0 0 16px; font-size:32px; line-height:1.2; color:var(--calc-text); font-weight:800; }

.calc-card{
  background:var(--calc-bg);
  border:1px solid var(--calc-border);
  border-radius:var(--calc-radius);
  padding:22px;
  box-shadow:var(--calc-shadow);
}

.calc-grid{ display:grid; grid-template-columns:1fr; gap:18px; }
@media(min-width:800px){ .calc-grid{ grid-template-columns:1.2fr .8fr; } }

.calc-label{ display:block; font-size:14px; color:var(--calc-muted); margin-bottom:8px; }

/* селект */
.calc-select-wrap{ position:relative; }
.calc-select{
  width:100%;
  height:var(--calc-control-h);
  padding:0 44px 0 14px;
  border:1px solid var(--calc-border);
  border-radius:12px;
  font-size:16px;
  background:#fff;
  outline:none;
  appearance:none;
  transition:border-color .2s, box-shadow .2s, transform .06s;
}
.calc-select:focus{
  border-color:var(--calc-primary);
  box-shadow:0 0 0 3px rgba(0,102,153,.15);
}
.calc-select-wrap:after{
  content:"";
  position:absolute;
  right:12px; top:50%;
  transform:translateY(-50%);
  width:16px; height:16px;
  pointer-events:none;
  opacity:.6;
  background-repeat:no-repeat;
  background-position:center;
  background-size:16px 16px;
  background-image:url("data:image/svg+xml,%3Csvg width='16' height='16' viewBox='0 0 24 24' fill='none' xmlns='http://www.w3.org/2000/svg'%3E%3Cpath d='M6 9l6 6 6-6' stroke='%239CA3AF' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'/%3E%3C/svg%3E");
}

.calc-price{
  display:flex; align-items:center; gap:10px;
  min-height:var(--calc-control-h);
  padding:0 14px;
  border:1px dashed var(--calc-border);
  border-radius:12px;
}
.calc-price__value{ font-weight:800; font-size:20px; color:var(--calc-text); }
.calc-price__note{ font-size:14px; color:var(--calc-muted); }

.calc-params{ margin-top:18px; }

/* range */
.calc-range{ margin-bottom:10px; }
.calc-range__input{ width:100%; accent-color:var(--calc-primary); margin:0; }
.calc-range__input::-webkit-slider-thumb{
  -webkit-appearance:none; width:var(--thumb); height:var(--thumb); border-radius:50%;
  background:var(--calc-primary); box-shadow:0 0 0 3px rgba(0,102,153,.15);
}
.calc-range__input::-webkit-slider-runnable-track{ height:6px; border-radius:999px; background:#e9eef4; }
.calc-range__input::-moz-range-thumb{
  width:var(--thumb); height:var(--thumb); border-radius:50%; background:var(--calc-primary); border:none;
  box-shadow:0 0 0 3px rgba(0,102,153,.15);
}
.calc-range__input::-moz-range-track{ height:6px; border-radius:999px; background:#e9eef4; }

.calc-range__ticks{
  position:relative;
  width:100%;
  height:16px;
  margin-top:10px;
  font-size:12px;
  color:var(--calc-muted);
  user-select:none;
}
.calc-range__ticks span{
  position:absolute;
  top:0;
  transform:translateX(-50%);
  white-space:nowrap;
}

.calc-range__meta{
  display:flex; justify-content:space-between;
  margin-top:10px;
  color:var(--calc-muted); font-size:14px;
}
.calc-range__current{ font-weight:700; color:var(--calc-text); }
.calc-range__limits{ display:none; }

.calc-actions{ margin-top:20px; }
.calc-btn{
  display:inline-flex; align-items:center; justify-content:center;
  width:100%; padding:14px 18px; border-radius:999px;
  background:var(--calc-primary); color:#fff; font-weight:700; font-size:16px;
  border:none; cursor:pointer; transition: transform .06s, box-shadow .2s, opacity .2s;
  box-shadow:0 6px 16px rgba(0,102,153,.25);
}
.calc-btn:hover{ transform:translateY(-1px); }
.calc-btn:active{ transform:translateY(0); opacity:.95; }

/* второй ползунок */
#calc-range2-wrap { margin-top: 18px; }

/* === Модалка === */
.calc-modal{
  position:fixed; inset:0; background:rgba(0,0,0,.45);
  display:none; align-items:center; justify-content:center; z-index:9999;
}
.calc-modal.is-open{ display:flex; }
.calc-modal__dialog{
  position:relative; background:#fff; border-radius:18px; padding:22px;
  width:min(520px,92vw); box-shadow:0 20px 60px rgba(0,0,0,.3);
}
.calc-modal__title{ margin:0 0 12px; font-size:28px; font-weight:800; color:var(--calc-text); text-align:center; }
.calc-modal__close{
  position:absolute; right:12px; top:10px; border:none; background:transparent;
  font-size:26px; line-height:1; cursor:pointer; color:#9aa3ae;
}
.calc-input{
  width:100%; height:56px; border:1px solid var(--calc-border); border-radius:999px;
  padding:0 18px; font-size:16px; outline:none; margin:8px 0; background:#fff;
}
.calc-input:focus{ border-color:var(--calc-primary); box-shadow:0 0 0 3px rgba(0,102,153,.15); }
.calc-check{ display:flex; gap:8px; align-items:flex-start; font-size:14px; color:var(--calc-muted); margin:6px 0 12px; }
.calc-check a{ color:var(--calc-primary); text-decoration:underline; }
.calc-modal__note{ margin-top:8px; font-size:14px; color:#0a4; text-align:center; }