/* ===========================================================
   RF4·Map — калькулятор прочности (Универсальный темный стиль списка)
   =========================================================== */

.calc-intro { margin-bottom: 18px; }
.calc-intro .lead { max-width: 62ch; }

/* ---------- вкладки категорий ---------- */
.calc-tabs {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 18px;
}

.calc-tab {
  font: inherit;
  font-size: 0.85rem;
  cursor: pointer;
  padding: 8px 15px;
  border-radius: 999px;
  color: inherit;
  background: rgba(127, 127, 127, 0.10);
  border: 1px solid rgba(127, 127, 127, 0.22);
  transition: background 0.15s, border-color 0.15s, color 0.15s, transform 0.1s;
}
.calc-tab:hover { background: rgba(127, 127, 127, 0.18); }
.calc-tab:active { transform: translateY(1px); }
.calc-tab.is-active {
  background: var(--accent-strong, #2f81f7);
  border-color: var(--accent-strong, #2f81f7);
  color: var(--accent-contrast);
  font-weight: 600;
}

/* ---------- сетка ---------- */
.calc-layout {
  display: grid;
  grid-template-columns: minmax(280px, 380px) 1fr;
  gap: 18px;
  align-items: start;
}
@media (max-width: 860px) {
  .calc-layout { grid-template-columns: 1fr; }
}

.calc-picker .head {
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  opacity: 0.65;
  margin-bottom: 14px;
}

.calc-field { margin-bottom: 20px; }
.calc-field:last-child { margin-bottom: 0; }
.calc-field > label {
  display: block;
  font-size: 0.85rem;
  margin-bottom: 6px;
  opacity: 0.85;
}
.calc-hint {
  margin-top: 6px;
  font-size: 0.78rem;
  opacity: 0.6;
}

/* ---------- комбобокс ---------- */
.calc-combo { position: relative; }

.calc-combo-input {
  width: 100%;
  padding-right: 34px;
}

.calc-combo-clear {
  position: absolute;
  top: 50%;
  right: 8px;
  transform: translateY(-50%);
  width: 22px;
  height: 22px;
  line-height: 1;
  font-size: 18px;
  cursor: pointer;
  border: 0;
  border-radius: 50%;
  color: inherit;
  opacity: 0.45;
  background: rgba(127, 127, 127, 0.15);
}
.calc-combo-clear:hover { opacity: 0.9; }

/* Список подстраивается под текущую тему сайта (light/dark), а не всегда тёмный */
.calc-options {
  display: none;
  position: absolute;
  z-index: 40;
  top: calc(100% + 6px);
  left: 0;
  right: 0;
  max-height: 320px;
  overflow-y: auto;
  padding: 6px;
  border-radius: 12px;
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  box-shadow: var(--shadow);
  color: var(--text);
}
.calc-combo.is-open .calc-options { display: block; }

.calc-option {
  display: flex;
  align-items: baseline;
  gap: 8px;
  padding: 8px 10px;
  border-radius: 8px;
  font-size: 0.88rem;
  cursor: pointer;
  color: var(--text);
  background: transparent;
}
.calc-option:hover,
.calc-option.is-active {
  background: var(--accent-strong, #2f81f7);
  color: var(--accent-contrast) !important;
}
.calc-option.is-empty { cursor: default; opacity: 0.55; }
.calc-option.is-empty:hover { background: transparent; color: var(--text); }

.calc-option .o-name { flex: 1; }
.calc-option .o-brand {
  font-size: 0.74rem;
  text-transform: uppercase;
  letter-spacing: 0.03em;
  opacity: 0.55;
}
.calc-option .o-val {
  font-variant-numeric: tabular-nums;
  font-weight: 700;
  font-size: 0.82rem;
  color: var(--accent-strong, #2f81f7);
}
.calc-option:hover .o-val,
.calc-option.is-active .o-val {
  color: var(--accent-contrast) !important;
}

/* ---------- износ ---------- */
.calc-wear-row { position: relative; }
.calc-wear-input { width: 100%; padding-right: 30px; font-variant-numeric: tabular-nums; }
.calc-wear-suffix {
  position: absolute;
  right: 12px;
  top: 50%;
  transform: translateY(-50%);
  opacity: 0.5;
  font-size: 0.85rem;
  pointer-events: none;
}

.calc-range {
  width: 100%;
  margin-top: 12px;
  accent-color: var(--accent-strong, #2f81f7);
}

.calc-presets {
  display: flex;
  gap: 6px;
  margin-top: 10px;
  flex-wrap: wrap;
}
.calc-presets button {
  font: inherit;
  font-size: 0.76rem;
  cursor: pointer;
  padding: 4px 10px;
  border-radius: 999px;
  color: inherit;
  background: rgba(127, 127, 127, 0.10);
  border: 1px solid rgba(127, 127, 127, 0.22);
}
.calc-presets button:hover { background: rgba(127, 127, 127, 0.2); }
.calc-presets button.is-active {
  background: var(--accent-strong, #2f81f7);
  border-color: var(--accent-strong, #2f81f7);
  color: var(--accent-contrast);
}

/* ---------- результат ---------- */
.calc-result { min-height: 240px; }

.calc-empty {
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 180px;
  text-align: center;
  opacity: 0.55;
  font-size: 0.9rem;
  padding: 20px;
}

.calc-result-head {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 12px;
  padding-bottom: 14px;
  margin-bottom: 16px;
  border-bottom: 1px solid rgba(127, 127, 127, 0.22);
}
.calc-result-head .r-brand {
  font-size: 0.72rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  opacity: 0.6;
  margin-bottom: 2px;
}
.calc-result-head .r-name { font-size: 1.25rem; margin: 0; }
.calc-result-head .r-wear {
  flex: none;
  font-size: 0.78rem;
  padding: 5px 12px;
  border-radius: 999px;
  background: rgba(127, 127, 127, 0.14);
  white-space: nowrap;
}
.calc-result-head .r-wear b { color: var(--accent-strong, #2f81f7); }

.calc-gauges {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(190px, 1fr));
  gap: 12px;
}

.calc-gauge {
  padding: 14px;
  border-radius: 14px;
  background: rgba(127, 127, 127, 0.09);
  border: 1px solid rgba(127, 127, 127, 0.18);
}
.calc-gauge.is-mod { border-style: dashed; }

.calc-gauge .g-label {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  opacity: 0.7;
  margin-bottom: 6px;
}
.calc-gauge .g-badge {
  font-size: 0.62rem;
  padding: 1px 6px;
  border-radius: 999px;
  background: var(--accent-strong, #2f81f7);
  color: var(--accent-contrast);
  letter-spacing: 0.04em;
}
.calc-gauge .g-value {
  font-size: 1.7rem;
  font-weight: 700;
  line-height: 1.1;
  font-variant-numeric: tabular-nums;
  color: var(--accent-strong, #2f81f7);
}
.calc-gauge .g-bar {
  height: 6px;
  border-radius: 999px;
  margin: 10px 0 8px;
  overflow: hidden;
  background: rgba(127, 127, 127, 0.22);
}
.calc-gauge .g-bar i {
  display: block;
  height: 100%;
  border-radius: 999px;
  background: var(--accent-strong, #2f81f7);
  transition: width 0.18s ease;
}
.calc-gauge .g-meta {
  display: flex;
  justify-content: space-between;
  gap: 8px;
  font-size: 0.74rem;
  opacity: 0.7;
  font-variant-numeric: tabular-nums;
}

.calc-specs-title {
  margin: 22px 0 10px;
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  opacity: 0.6;
}
.calc-specs {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
  gap: 1px;
  background: rgba(127, 127, 127, 0.22);
  border: 1px solid rgba(127, 127, 127, 0.22);
  border-radius: 12px;
  overflow: hidden;
}
.calc-spec {
  display: flex;
  flex-direction: column;
  gap: 4px;
  padding: 12px;
  background: rgba(127, 127, 127, 0.08);
  font-size: 0.85rem;
  color: inherit;
}
.calc-spec span { 
  font-size: 0.7rem; 
  text-transform: uppercase; 
  letter-spacing: 0.04em; 
  opacity: 0.6;
  color: inherit;
}
.calc-spec b { 
  font-variant-numeric: tabular-nums;
  color: var(--accent-strong, #2f81f7);
  font-weight: 600;
}

/* ---------- видео ---------- */
.calc-videos { margin-top: 34px; }
.calc-section-title { font-size: 1.15rem; margin-bottom: 12px; }

.calc-video-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 14px;
}
.calc-video {
  display: block;
  text-decoration: none;
  color: inherit;
  border-radius: 14px;
  overflow: hidden;
  background: var(--bg-elevated);
  border: 1px solid rgba(127, 127, 127, 0.2);
  transition: transform 0.15s, box-shadow 0.15s;
}
.calc-video:hover { transform: translateY(-2px); box-shadow: 0 12px 28px rgba(0, 0, 0, 0.18); }
.calc-video .thumb { position: relative; aspect-ratio: 16 / 9; background: rgba(127, 127, 127, 0.15); }
.calc-video .thumb img { width: 100%; height: 100%; object-fit: cover; display: block; }
.calc-video .play {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 2rem;
  color: #fff;
  text-shadow: 0 2px 12px rgba(0, 0, 0, 0.6);opacity: 0.9;
}
.calc-video .body { padding: 12px 14px; }
.calc-video .src {
  font-size: 0.68rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  opacity: 0.55;
  margin-bottom: 4px;
}
.calc-video h3 { font-size: 0.95rem; margin: 0; }

/* ---------- подвал раздела ---------- */
.calc-credits {
  margin-top: 28px;
  padding: 14px 16px;
  border-radius: 14px;
  text-align: center;
  font-size: 0.86rem;
  background: rgba(127, 127, 127, 0.09);
  border: 1px solid rgba(127, 127, 127, 0.18);
}