/* =========================================================================
   Tool page — interactive calculator UI
   ========================================================================= */

.tool-frame {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--r-xl);
  padding: var(--sp-8);
  margin: var(--sp-6) 0 var(--sp-10);
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--sp-8);
  position: relative;
  overflow: hidden;
}
.tool-frame::before {
  content: "";
  position: absolute;
  right: -160px; top: -160px;
  width: 400px; height: 400px;
  background: radial-gradient(circle, rgba(90,103,255,0.10), transparent 60%);
  pointer-events: none;
}
@media (max-width: 800px) {
  .tool-frame { grid-template-columns: 1fr; padding: var(--sp-6); }
}

.tool-panel {
  position: relative;
  z-index: 1;
}
.tool-panel__head {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: var(--sp-5);
}
.tool-panel__title {
  font-family: var(--font-mono);
  font-size: var(--fs-xs);
  text-transform: uppercase;
  letter-spacing: 0.14em;
  color: var(--accent-400);
  margin: 0;
}

.tool-field {
  display: block;
  margin-bottom: var(--sp-5);
}
.tool-field__label {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  font-size: var(--fs-sm);
  color: var(--text);
  font-weight: 500;
  margin-bottom: 6px;
}
.tool-field__hint {
  color: var(--text-subtle);
  font-size: var(--fs-xs);
  font-family: var(--font-mono);
}
.tool-field input[type="number"],
.tool-field input[type="text"],
.tool-field select {
  width: 100%;
  background: var(--bg-elevated);
  border: 1px solid var(--border-strong);
  color: var(--text);
  font-size: var(--fs-lg);
  font-family: var(--font-mono);
  padding: 12px 16px;
  border-radius: var(--r-md);
  transition: border-color var(--dur-fast);
}
.tool-field input:focus, .tool-field select:focus {
  outline: none;
  border-color: var(--primary-400);
  box-shadow: 0 0 0 3px rgba(90,103,255,0.15);
}
.tool-field input[type="range"] {
  width: 100%;
  -webkit-appearance: none;
  appearance: none;
  height: 6px;
  background: var(--border);
  border-radius: 3px;
  margin-top: 12px;
}
.tool-field input[type="range"]::-webkit-slider-thumb {
  -webkit-appearance: none;
  appearance: none;
  width: 20px; height: 20px;
  border-radius: 50%;
  background: var(--accent-500);
  cursor: pointer;
  box-shadow: 0 2px 8px rgba(255,193,7,0.4);
}
.tool-field input[type="range"]::-moz-range-thumb {
  width: 20px; height: 20px;
  border-radius: 50%;
  background: var(--accent-500);
  cursor: pointer;
  border: 0;
}

.tool-radio-group {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(120px, 1fr));
  gap: 6px;
}
.tool-radio {
  position: relative;
}
.tool-radio input {
  position: absolute;
  opacity: 0;
  pointer-events: none;
}
.tool-radio label {
  display: block;
  padding: 10px;
  text-align: center;
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  border-radius: var(--r-md);
  cursor: pointer;
  font-size: var(--fs-sm);
  font-weight: 500;
  color: var(--text-muted);
  transition: all var(--dur-fast);
}
.tool-radio label:hover { border-color: var(--border-strong); color: var(--text); }
.tool-radio input:checked + label {
  background: var(--primary-800);
  border-color: var(--primary-500);
  color: white;
}

.tool-actions {
  display: flex;
  gap: var(--sp-3);
  margin-top: var(--sp-6);
  flex-wrap: wrap;
}

/* ---- Result panel ---- */
.tool-result {
  background: linear-gradient(160deg, rgba(90,103,255,0.06), rgba(0,0,0,0.4));
  border: 1px solid var(--primary-700);
  border-radius: var(--r-lg);
  padding: var(--sp-6);
  position: relative;
  z-index: 1;
}
.tool-result__label {
  font-family: var(--font-mono);
  font-size: var(--fs-xs);
  text-transform: uppercase;
  letter-spacing: 0.14em;
  color: var(--accent-400);
  margin-bottom: var(--sp-4);
  display: flex;
  align-items: center;
  gap: 8px;
}
.tool-result__big {
  font-family: var(--font-mono);
  font-size: clamp(2.4rem, 5vw, 3.5rem);
  font-weight: 800;
  color: var(--accent-400);
  line-height: 1;
  margin: 0 0 var(--sp-2);
  letter-spacing: -0.02em;
}
.tool-result__unit {
  color: var(--text-muted);
  font-size: 0.5em;
  margin-left: 6px;
  font-weight: 400;
}
.tool-result__caption {
  color: var(--text-muted);
  font-size: var(--fs-sm);
  margin-bottom: var(--sp-5);
}

.tool-breakdown {
  display: flex;
  flex-direction: column;
  gap: var(--sp-2);
  padding: var(--sp-4);
  background: rgba(0,0,0,0.25);
  border-radius: var(--r-md);
  border: 1px solid var(--border);
  margin-top: var(--sp-4);
}
.tool-breakdown__row {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  padding: 6px 0;
  font-size: var(--fs-sm);
  border-bottom: 1px dashed var(--border);
}
.tool-breakdown__row:last-child { border-bottom: 0; }
.tool-breakdown__row.total {
  padding-top: 10px;
  margin-top: 4px;
  border-top: 1px solid var(--border-strong);
  border-bottom: 0;
  font-weight: 700;
  font-size: var(--fs-base);
}
.tool-breakdown__key { color: var(--text-muted); }
.tool-breakdown__value {
  font-family: var(--font-mono);
  color: var(--text);
  font-variant-numeric: tabular-nums;
}
.tool-breakdown__row.total .tool-breakdown__value { color: var(--accent-400); }

/* ---- Privacy notice ---- */
.privacy-notice {
  display: flex;
  gap: var(--sp-4);
  padding: var(--sp-4) var(--sp-5);
  background: rgba(16,185,129,0.06);
  border: 1px solid rgba(16,185,129,0.25);
  border-radius: var(--r-md);
  margin-block: var(--sp-6);
}
.privacy-notice__icon {
  font-size: 24px;
}
.privacy-notice__title {
  color: var(--success);
  font-weight: 700;
  margin: 0 0 4px;
}
.privacy-notice__body {
  color: var(--success-fg);
  font-size: var(--fs-sm);
  margin: 0;
}