/* ======================================= */
/* WEERSTAND CALCULATOR                    */
/* ======================================= */

.weerstand-calculator-card {
  max-width: 100%;
  margin: 0 auto;
  padding: 35px;
  background: linear-gradient(
    145deg,
    var(--card-bg) 0%,
    var(--secondary-bg) 100%
  );
  border: 1px solid var(--border-color);
  border-radius: 20px;
  box-shadow: 0 20px 60px rgba(0, 0, 0, 0.5),
    0 0 0 1px rgba(255, 255, 255, 0.05) inset;
  color: var(--text-color);
  position: relative;
  overflow: hidden;
  box-sizing: border-box;
}

.weerstand-calculator-card::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: linear-gradient(
    90deg,
    var(--accent-purple),
    var(--accent-blue),
    var(--accent-purple)
  );
  background-size: 200% 100%;
  animation: weerstandGradientShift 3s ease infinite;
}

@keyframes weerstandGradientShift {
  0%,
  100% {
    background-position: 0% 50%;
  }
  50% {
    background-position: 100% 50%;
  }
}

.weerstand-calculator-card h1 {
  color: var(--text-primary);
  font-size: 2rem;
  margin-bottom: 8px;
  text-align: center;
  font-weight: 700;
  letter-spacing: -0.5px;
}

.weerstand-calculator-card-subtitle {
  text-align: center;
  color: var(--text-secondary);
  font-size: 0.9rem;
  margin-bottom: 25px;
  font-weight: 400;
}

/* Selector bovenaan */
.weerstand-calculator-card-selector {
  text-align: center;
  background: var(--overlay-medium);
  padding: 16px;
  border-radius: 12px;
  border: 1px solid var(--border-dark);
  margin-bottom: 25px;
}

.weerstand-calculator-card-selector label {
  font-weight: 600;
  margin-right: 12px;
  color: var(--text-primary);
  font-size: 0.95rem;
}

.weerstand-calculator-card-selector select {
  padding: 10px 18px;
  border-radius: 8px;
  border: 2px solid var(--border-color);
  background: var(--primary-bg);
  color: var(--text-color);
  font-weight: 600;
  cursor: pointer;
  transition: all 0.2s ease;
  font-size: 0.95rem;
}

.weerstand-calculator-card-selector select:hover {
  border-color: var(--accent-purple);
  box-shadow: 0 0 15px rgba(147, 51, 234, 0.3);
}

/* Layout: twee kolommen op desktop */
.weerstand-calculator-card-layout {
  display: grid;
  grid-template-columns: 1fr 1.5fr;
  gap: 30px;
  align-items: start;
}

.weerstand-calculator-card-column {
  display: flex;
  flex-direction: column;
  gap: 20px;
}

/* Visuele weerstand */
.weerstand-calculator-card-resistor-visual {
  display: flex;
  justify-content: center;
  align-items: center;
  padding: 30px 20px;
  background: linear-gradient(135deg, #1a1f2e 0%, #2d3548 100%);
  border-radius: 12px;
  border: 1px solid var(--border-color);
  box-shadow: 0 4px 15px rgba(0, 0, 0, 0.3);
}

.weerstand-calculator-card-resistor-body {
  display: flex;
  align-items: center;
  position: relative;
}

.weerstand-calculator-card-resistor-lead {
  width: 60px;
  height: 3px;
  background: linear-gradient(180deg, #c0c0c0 0%, #808080 100%);
  box-shadow: 0 2px 4px rgba(0, 0, 0, 0.3);
}

.weerstand-calculator-card-resistor-bands-display {
  display: flex;
  align-items: center;
  gap: 8px;
  height: 60px;
  padding: 0 20px;
  background: linear-gradient(
    180deg,
    #e8dcc0 0%,
    #c4a772 50%,
    #8b7355 100%
  );
  border-radius: 30px;
  box-shadow: inset 0 -2px 8px rgba(0, 0, 0, 0.3),
    0 4px 10px rgba(0, 0, 0, 0.4);
  position: relative;
  min-width: 180px;
}

.weerstand-calculator-card-resistor-bands-display::before,
.weerstand-calculator-card-resistor-bands-display::after {
  content: "";
  position: absolute;
  top: 0;
  bottom: 0;
  width: 20px;
  background: linear-gradient(
    180deg,
    rgba(255, 255, 255, 0.2) 0%,
    transparent 50%,
    rgba(0, 0, 0, 0.2) 100%
  );
}

.weerstand-calculator-card-resistor-bands-display::before {
  left: 0;
  border-radius: 30px 0 0 30px;
}

.weerstand-calculator-card-resistor-bands-display::after {
  right: 0;
  border-radius: 0 30px 30px 0;
}

.weerstand-calculator-card-visual-band {
  width: 10px;
  height: 60px;
  border-radius: 2px;
  box-shadow: inset -1px 0 2px rgba(0, 0, 0, 0.5),
    inset 1px 0 2px rgba(255, 255, 255, 0.3);
  position: relative;
  z-index: 1;
  transition: all 0.3s ease;
}

.weerstand-calculator-card-visual-band.spacer {
  width: 20px;
  background: transparent !important;
  box-shadow: none;
}

/* Actions */
.weerstand-calculator-card-actions {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
}

.weerstand-calculator-card-btn {
  padding: 14px 20px;
  border: none;
  border-radius: 10px;
  cursor: pointer;
  font-weight: 600;
  font-size: 0.95rem;
  transition: all 0.2s ease;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  position: relative;
  overflow: hidden;
}

.weerstand-calculator-card-btn::before {
  content: "";
  position: absolute;
  top: 50%;
  left: 50%;
  width: 0;
  height: 0;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.2);
  transform: translate(-50%, -50%);
  transition: width 0.6s, height 0.6s;
}

.weerstand-calculator-card-btn:hover::before {
  width: 300px;
  height: 300px;
}

.weerstand-calculator-card-btn-icon {
  font-size: 1.1rem;
}

.weerstand-calculator-card-btn-primary {
  background: linear-gradient(
    135deg,
    var(--accent-purple) 0%,
    var(--accent-purple-dark) 100%
  );
  color: white;
  box-shadow: 0 4px 15px rgba(147, 51, 234, 0.4);
}

.weerstand-calculator-card-btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(147, 51, 234, 0.6);
}

.weerstand-calculator-card-btn-primary:active {
  transform: translateY(0);
}

.weerstand-calculator-card-btn-secondary {
  background: linear-gradient(
    135deg,
    var(--button-reset-bg) 0%,
    var(--button-reset-hover) 100%
  );
  color: white;
  box-shadow: 0 4px 15px rgba(108, 117, 125, 0.4);
}

.weerstand-calculator-card-btn-secondary:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(108, 117, 125, 0.6);
}

/* Result */
.weerstand-calculator-card-result {
  text-align: center;
  background: linear-gradient(
    135deg,
    var(--primary-bg) 0%,
    #1a1f2e 100%
  );
  border-radius: 12px;
  padding: 24px;
  border: 2px solid var(--accent-purple);
  box-shadow: 0 4px 15px rgba(147, 51, 234, 0.3);
  backdrop-filter: blur(10px);
}

.weerstand-calculator-card-result h3 {
  margin: 0 0 12px 0;
  color: var(--accent-purple);
  font-size: 1.1rem;
  font-weight: 600;
}

.weerstand-calculator-card-result p {
  margin: 0;
  font-size: 1.8rem;
  font-weight: 700;
  color: var(--text-color);
  text-shadow: 0 2px 4px rgba(0, 0, 0, 0.3);
  font-family: "Courier New", monospace;
}

.weerstand-calculator-card-note {
  text-align: center;
  color: var(--text-secondary);
  padding: 12px;
  background: var(--overlay-dark);
  border-radius: 8px;
  border: 1px solid var(--border-dark);
}

.weerstand-calculator-card-note small {
  font-size: 0.85rem;
}

/* Band selectors - Grid layout voor desktop */
.weerstand-calculator-card-bands {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 15px;
}

.weerstand-calculator-card-band-select {
  background: var(--overlay-medium);
  padding: 18px;
  border-radius: 12px;
  border: 1px solid var(--border-dark);
  transition: all 0.3s ease;
}

.weerstand-calculator-card-band-select:hover {
  border-color: var(--accent-purple);
  box-shadow: 0 0 20px rgba(147, 51, 234, 0.2);
}

.weerstand-calculator-card-band-select label {
  display: block;
  font-weight: 600;
  margin-bottom: 12px;
  font-size: 0.95rem;
  color: var(--accent-purple);
  text-align: center;
}

.weerstand-calculator-card-selected-color {
  text-align: center;
  padding: 10px;
  margin-bottom: 12px;
  border-radius: 8px;
  background: var(--overlay-dark);
  font-weight: 600;
  font-size: 0.9rem;
  border: 2px solid var(--border-dark);
  transition: all 0.3s ease;
}

.weerstand-calculator-card-color-buttons {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 8px;
}

.weerstand-calculator-card-color-btn {
  width: 100%;
  aspect-ratio: 1;
  border: 2px solid transparent;
  border-radius: 8px;
  cursor: pointer;
  transition: all 0.2s ease;
  position: relative;
  box-shadow: 0 2px 6px rgba(0, 0, 0, 0.3);
}

.weerstand-calculator-card-color-btn:hover {
  transform: scale(1.1);
  border-color: var(--accent-purple);
  box-shadow: 0 4px 12px rgba(147, 51, 234, 0.5);
}

.weerstand-calculator-card-color-btn.active {
  border-color: var(--accent-purple);
  border-width: 3px;
  transform: scale(1.05);
  box-shadow: 0 0 0 3px rgba(147, 51, 234, 0.3);
}

.weerstand-calculator-card-color-btn.disabled {
  opacity: 0.3;
  cursor: not-allowed;
  pointer-events: none;
}

.weerstand-calculator-card-color-btn::after {
  content: attr(title);
  position: absolute;
  bottom: -30px;
  left: 50%;
  transform: translateX(-50%);
  background: var(--card-bg);
  color: var(--text-color);
  padding: 6px 10px;
  border-radius: 6px;
  font-size: 0.75rem;
  white-space: nowrap;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.2s;
  z-index: 10;
  border: 1px solid var(--border-color);
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.4);
}

.weerstand-calculator-card-color-btn:hover::after {
  opacity: 1;
}

/* Responsive - Voor extra grote schermen 3 kolommen voor bands */
@media (min-width: 1400px) {
  .weerstand-calculator-card-bands {
    grid-template-columns: repeat(3, 1fr);
  }
}

/* Responsive - Tablet en kleiner */
@media (max-width: 968px) {
  .weerstand-calculator-card-layout {
    grid-template-columns: 1fr;
    gap: 20px;
  }
  
  .weerstand-calculator-card-bands {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 768px) {
  .weerstand-calculator-card {
    padding: 20px 12px;
    border-radius: 16px;
  }

  .weerstand-calculator-card h1 {
    font-size: 1.5rem;
  }

  .weerstand-calculator-card-subtitle {
    font-size: 0.85rem;
    margin-bottom: 20px;
  }

  .weerstand-calculator-card-resistor-visual {
    padding: 20px 15px;
  }

  .weerstand-calculator-card-resistor-lead {
    width: 40px;
  }

  .weerstand-calculator-card-resistor-bands-display {
    height: 50px;
    padding: 0 15px;
    min-width: 140px;
  }

  .weerstand-calculator-card-visual-band {
    width: 8px;
    height: 50px;
  }

  .weerstand-calculator-card-actions {
    grid-template-columns: 1fr;
    gap: 10px;
  }

  .weerstand-calculator-card-btn {
    padding: 12px 16px;
    font-size: 0.9rem;
  }

  .weerstand-calculator-card-result p {
    font-size: 1.5rem;
  }

  .weerstand-calculator-card-bands {
    grid-template-columns: 1fr;
  }

  .weerstand-calculator-card-color-buttons {
    grid-template-columns: repeat(4, 1fr);
  }
}

@media (max-width: 375px) {
  .weerstand-calculator-card {
    padding: 16px 10px;
  }

  .weerstand-calculator-card h1 {
    font-size: 1.3rem;
  }

  .weerstand-calculator-card-subtitle {
    font-size: 0.8rem;
  }

  .weerstand-calculator-card-result p {
    font-size: 1.3rem;
  }

  .weerstand-calculator-card-color-buttons {
    grid-template-columns: repeat(3, 1fr);
  }
}