/* ===== CALCULATORS ===== */

/* List grid */

.rk-calc-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(260px, 1fr));
  gap: 16px;
}

.rk-calc-card {
  display: flex;
  flex-direction: column;
  gap: 10px;
  min-height: 180px;
  padding: 20px;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--white);
  box-shadow: var(--shadow);
  text-decoration: none;
  transition: border-color 0.15s ease, box-shadow 0.15s ease, transform 0.15s ease;
}

.rk-calc-card:hover {
  border-color: var(--blue);
  box-shadow: var(--shadow-lg);
  transform: translateY(-2px);
}

.rk-calc-card__icon {
  width: 56px;
  height: 56px;
  border-radius: var(--radius);
  background: var(--blue-light);
  position: relative;
}

.rk-calc-card__icon--resistor::before,
.rk-calc-card__icon--resistor::after {
  content: '';
  position: absolute;
  top: 50%;
  width: 18px;
  height: 3px;
  margin-top: -1.5px;
  background: #999;
  border-radius: 2px;
}

.rk-calc-card__icon--resistor::before {
  left: 8px;
}

.rk-calc-card__icon--resistor::after {
  right: 8px;
}

.rk-calc-card__icon--resistor {
  background:
    linear-gradient(to right, #999 0 8px, transparent 8px 12px, #8B4513 12px 16px, #000 16px 20px, #D4AF37 20px 24px, #C0C0C0 24px 28px, #999 28px 32px, transparent 32px 100%),
    var(--blue-light);
}

.rk-calc-card__title {
  font-size: 16px;
  font-weight: 700;
  color: var(--text);
}

.rk-calc-card__desc {
  font-size: 13px;
  line-height: 1.5;
  color: var(--text-muted);
}

/* ===== Resistor calculator (ChipDip 1:1) ===== */

.rk-calc-resistor-w {
  max-width: 680px;
  margin: 0 auto;
}

.rk-calc-resistor-w__lead {
  margin: 0 0 16px;
  font-size: 14px;
  line-height: 1.55;
  color: var(--text-muted);
}

.rk-calc-resistor-w__subhead {
  margin: 0 0 12px;
  font-size: 20px;
  font-weight: 700;
}

.rk-calc-resistor-w .resistor-w-help {
  padding-top: 10px;
  padding-left: 85px;
  margin: 0;
  font-size: 14px;
  color: var(--text-muted);
}

.rk-calc-resistor-w .mode-selector {
  padding: 20px 0;
  display: flex;
  flex-wrap: wrap;
  gap: 10px 70px;
}

.rk-calc-resistor-w .rk-radio {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 18px;
  cursor: pointer;
}

.rk-calc-resistor-w .rk-radio input {
  width: 16px;
  height: 16px;
  margin: 0;
}

.rk-calc-resistor-w .resistor-body {
  height: 208px;
  position: relative;
  background-repeat: no-repeat;
  background-position: top left;
}

.rk-calc-resistor-w .resistor-body4 {
  background-image: url('../img/calc/res-body4_v2.png');
}

.rk-calc-resistor-w .resistor-body5 {
  background-image: url('../img/calc/res-body5_v2.png');
}

.rk-calc-resistor-w .res-title {
  position: absolute;
  color: #000;
  font-size: 13px;
  line-height: 20px;
  z-index: 2;
}

.rk-calc-resistor-w .resistor-body4 .res-title-nominal { top: 22px; left: 138px; }
.rk-calc-resistor-w .resistor-body4 .res-title-multiplier { top: -7px; left: 182px; }
.rk-calc-resistor-w .resistor-body4 .res-title-tolerance { top: 22px; left: 248px; }
.rk-calc-resistor-w .resistor-body5 .res-title-nominal { top: 22px; left: 154px; }
.rk-calc-resistor-w .resistor-body5 .res-title-multiplier { top: -7px; left: 210px; }
.rk-calc-resistor-w .resistor-body5 .res-title-tolerance { top: 22px; left: 256px; }

.rk-calc-resistor-w .res-bar {
  position: absolute;
  top: 77px;
  width: 18px;
  height: 110px;
  cursor: pointer;
}

.rk-calc-resistor-w .nominal_1 { width: 24px; }
.rk-calc-resistor-w .resistor-body4 .nominal_1 { left: 137px; }
.rk-calc-resistor-w .resistor-body4 .nominal_2 { left: 176px; }
.rk-calc-resistor-w .resistor-body4 .nominal_3 { display: none; }
.rk-calc-resistor-w .resistor-body4 .multiplier { left: 206px; }
.rk-calc-resistor-w .resistor-body4 .tolerance { left: 267px; }
.rk-calc-resistor-w .resistor-body5 .nominal_1 { left: 137px; }
.rk-calc-resistor-w .resistor-body5 .nominal_2 { left: 176px; }
.rk-calc-resistor-w .resistor-body5 .nominal_3 { left: 206px; }
.rk-calc-resistor-w .resistor-body5 .multiplier { left: 236px; }
.rk-calc-resistor-w .resistor-body5 .tolerance { left: 267px; }

.rk-calc-resistor-w .picker {
  position: absolute;
  top: 140px;
  display: none;
  width: 150px !important;
  z-index: 10;
  border: solid 1px #999;
  box-shadow: 0 3px 10px rgba(0, 0, 0, 0.8);
}

.rk-calc-resistor-w .picker:before {
  position: absolute;
  z-index: 502;
  left: 64px;
  top: -22px;
  width: 0;
  height: 13px;
  border-bottom: 10px solid #fff;
  border-left: 10px solid transparent;
  border-right: 10px solid transparent;
  content: "";
}

.rk-calc-resistor-w .picker:after {
  position: absolute;
  z-index: 501;
  left: 64px;
  top: -30px;
  width: 0;
  height: 20px;
  border-bottom: 10px solid #7d7d7d;
  border-left: 10px solid transparent;
  border-right: 10px solid transparent;
  content: "";
}

.rk-calc-resistor-w .picker-header {
  font-size: 13px;
  font-weight: bold;
  font-style: italic;
  padding: 5px;
  color: #000;
  background-color: #fff;
  text-align: center;
}

.rk-calc-resistor-w .picker-bar {
  text-transform: lowercase;
  color: white;
  cursor: pointer;
  height: 20px;
  position: relative;
}

.rk-calc-resistor-w .picker-bar-hovered {
  display: none;
  position: absolute;
  color: white;
  cursor: pointer;
  width: 131px;
  top: -3px;
  left: -20px;
  padding: 5px 20px;
  font-size: 13px;
  line-height: 17px;
}

.rk-calc-resistor-w .picker-bar:hover .picker-bar-hovered {
  display: block;
  z-index: 11;
  box-shadow: 0 0 10px rgba(0, 0, 0, 0.8);
}

.rk-calc-resistor-w .picker.nominal_1 .color-silver,
.rk-calc-resistor-w .picker.nominal_1 .color-gold { display: none; }
.rk-calc-resistor-w .resistor-body4 .picker.nominal_1 .color-black { display: none; }
.rk-calc-resistor-w .picker.nominal_2 .color-silver,
.rk-calc-resistor-w .picker.nominal_2 .color-gold,
.rk-calc-resistor-w .picker.nominal_3 .color-silver,
.rk-calc-resistor-w .picker.nominal_3 .color-gold { display: none; }
.rk-calc-resistor-w .picker.tolerance .color-black,
.rk-calc-resistor-w .picker.tolerance .color-orange,
.rk-calc-resistor-w .picker.tolerance .color-yellow,
.rk-calc-resistor-w .picker.tolerance .color-white { display: none; }

.rk-calc-resistor-w .color-none {
  background: url('data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAwAAAAMCAIAAADZF8uwAAAAGXRFWHRTb2Z0d2FyZQBBZG9iZSBJbWFnZVJlYWR5ccllPAAAACpJREFUeNpiPHPmDAMqMDY2RhNhYiACDEZFjP///0cTOnv27HDxHUCAAQCq9wh4Q8JO3QAAAABJRU5ErkJggg==') repeat top left;
}

.rk-calc-resistor-w .picker-bar.color-silver,
.rk-calc-resistor-w .picker-bar.color-silver .picker-bar-hovered {
  background-color: silver;
  background-image: linear-gradient(to right, #0f0f0f 0%, #d4d4d4 49%, #595959 67%, #e7e7e7 82%, #4d4c4c 100%);
}

.rk-calc-resistor-w .picker-bar.color-gold,
.rk-calc-resistor-w .picker-bar.color-gold .picker-bar-hovered {
  background-color: gold;
  background-image: linear-gradient(to right, #5b3015 0%, #ffdc40 49%, #805c13 67%, #ffe25f 82%, #a57032 100%);
}

.rk-calc-resistor-w .picker-bar.color-black,
.rk-calc-resistor-w .picker-bar.color-black .picker-bar-hovered { background-color: #000; }
.rk-calc-resistor-w .picker-bar.color-brown,
.rk-calc-resistor-w .picker-bar.color-brown .picker-bar-hovered { background-color: #6f3a0d; }
.rk-calc-resistor-w .picker-bar.color-red,
.rk-calc-resistor-w .picker-bar.color-red .picker-bar-hovered { background-color: #e42621; }
.rk-calc-resistor-w .picker-bar.color-orange,
.rk-calc-resistor-w .picker-bar.color-orange .picker-bar-hovered { background-color: #f29100; }
.rk-calc-resistor-w .picker-bar.color-yellow,
.rk-calc-resistor-w .picker-bar.color-yellow .picker-bar-hovered { background-color: #ffdc00; }
.rk-calc-resistor-w .picker-bar.color-green,
.rk-calc-resistor-w .picker-bar.color-green .picker-bar-hovered { background-color: #39a935; }
.rk-calc-resistor-w .picker-bar.color-blue,
.rk-calc-resistor-w .picker-bar.color-blue .picker-bar-hovered { background-color: #4ebed7; }
.rk-calc-resistor-w .picker-bar.color-violet,
.rk-calc-resistor-w .picker-bar.color-violet .picker-bar-hovered { background-color: #6758a1; }
.rk-calc-resistor-w .picker-bar.color-gray,
.rk-calc-resistor-w .picker-bar.color-gray .picker-bar-hovered { background-color: #b7c1c9; }
.rk-calc-resistor-w .picker-bar.color-white,
.rk-calc-resistor-w .picker-bar.color-white .picker-bar-hovered { background-color: #fff; color: gray; }

.rk-calc-resistor-w .res-bar.color-silver { background-image: linear-gradient(to top, #0f0f0f 0%, #d4d4d4 49%, #595959 67%, #e7e7e7 82%, #4d4c4c 100%); }
.rk-calc-resistor-w .res-bar.color-gold { background-image: linear-gradient(to top, #5b3015 0%, #ffdc40 49%, #805c13 67%, #ffe25f 82%, #a57032 100%); }
.rk-calc-resistor-w .res-bar.color-black { background-image: linear-gradient(to bottom, #000 0%, #545454 50%, #000 100%); }
.rk-calc-resistor-w .res-bar.color-brown { background-image: linear-gradient(to bottom, #6f3a0d 0%, #d19c7d 50%, #6f3a0d 100%); }
.rk-calc-resistor-w .res-bar.color-red { background-image: linear-gradient(to bottom, #c71700 0%, #f0877e 50%, #c71700 100%); }
.rk-calc-resistor-w .res-bar.color-orange { background-image: linear-gradient(to bottom, #f08800 0%, #fbc34b 50%, #f08800 100%); }
.rk-calc-resistor-w .res-bar.color-yellow { background-image: linear-gradient(to bottom, #e3c100 0%, #fff1a2 50%, #e3c100 100%); }
.rk-calc-resistor-w .res-bar.color-green { background-image: linear-gradient(to bottom, #2e872b 0%, #9ed0b5 50%, #2e872b 100%); }
.rk-calc-resistor-w .res-bar.color-blue { background-image: linear-gradient(to bottom, #45a5ba 0%, #cee6f8 50%, #45a5ba 100%); }
.rk-calc-resistor-w .res-bar.color-violet { background-image: linear-gradient(to bottom, #5a4d8c 0%, #bcb4da 50%, #5a4d8c 100%); }
.rk-calc-resistor-w .res-bar.color-gray { background-image: linear-gradient(to bottom, #828889 0%, #cfdbe6 50%, #828889 100%); }
.rk-calc-resistor-w .res-bar.color-white { background-image: linear-gradient(to bottom, #d4dde2 0%, #fff 50%, #d4dde2 100%); }

.rk-calc-resistor-w .calculation {
  padding: 25px 0;
  display: flex;
  justify-content: space-between;
  width: 615px;
  max-width: 100%;
  flex-wrap: wrap;
  gap: 16px;
}

.rk-calc-resistor-w .calc_label-text {
  font-weight: bold;
  padding: 5px 0;
  font-size: 14px;
}

.rk-calc-resistor-w .calc_control {
  padding: 5px 10px;
  line-height: 23px;
  box-sizing: border-box;
  margin: 0;
  height: 34px;
  border: 1px solid #ccc;
  border-radius: 2px;
  font-size: 16px;
  background: #fff;
}

.rk-calc-resistor-w .calc_nominal {
  width: 110px;
}

.rk-calc-resistor-w .calc_reset_btn,
.rk-calc-resistor-w .calc_search_btn {
  min-width: 100px;
  cursor: pointer;
  background: linear-gradient(180deg, #fff 0%, #eef1f5 100%);
}

.rk-calc-resistor-w .calc_search_btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  text-decoration: none;
  color: var(--text);
}

.rk-calc-resistor-w .calc_proposal_w {
  margin-top: 10px;
}

.rk-calc-resistor-w .calc_proposal_body {
  background-color: #e6f0f1;
  padding: 10px 20px 15px;
  width: 615px;
  max-width: 100%;
  box-sizing: border-box;
}

.rk-calc-resistor-w .calc_proposal {
  padding-right: 20px;
  font-weight: 600;
}

.rk-calc-resistor-w .proposal_control {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  align-items: center;
}

.rk-calc-card__icon--default {
  background: var(--blue-light);
}

.rk-calc-card__icon--default::before {
  content: '⚙';
  display: flex;
  align-items: center;
  justify-content: center;
  width: 100%;
  height: 100%;
  font-size: 24px;
  color: var(--blue);
}

.is-hidden {
  display: none !important;
}

@media (max-width: 640px) {
  .rk-calc-resistor-w .mode-selector .rk-radio {
    font-size: 16px;
  }

  .rk-calc-resistor-w .resistor-w-help {
    padding-left: 0;
  }

  .rk-calc-resistor-w .calculation {
    flex-direction: column;
    width: 100%;
  }

  .rk-calc-resistor-w .picker-bar-hovered {
    display: block;
    position: static;
    width: auto;
    left: auto;
    top: auto;
    padding: 0 20px;
    font-size: 12px;
    line-height: 18px;
    box-shadow: none;
  }

  .rk-calc-resistor-w .picker-bar {
    height: 28px;
    display: flex;
    align-items: center;
  }
}