/* ======================================================
   TEMPERATUUR
   ====================================================== */
.temperatuur-converter-card {
  max-width: 750px;
  margin: 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;
  font-family: "Poppins", sans-serif;
}

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

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

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

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

.temperatuur-converter-card .section-box {
  background: var(--overlay-medium);
  border: 1px solid rgba(45, 55, 72, 0.5);
  border-radius: 12px;
  padding: 20px;
  margin-bottom: 20px;
}

.temperatuur-converter-card .section-label {
  display: block;
  font-weight: 600;
  font-size: 0.95rem;
  margin-bottom: 12px;
  color: var(--text-primary);
}

/* Slider */
.temperatuur-converter-card .temp-slider {
  -webkit-appearance: none;
  width: 100%;
  height: 8px;
  border-radius: 10px;
  background: linear-gradient(90deg, var(--accent-blue) 0%, var(--border-dark) 0%);
  cursor: pointer;
  outline: none;
  margin-bottom: 10px;
  transition: background 0.3s ease;
}

.temperatuur-converter-card .temp-slider::-webkit-slider-thumb {
  -webkit-appearance: none;
  appearance: none;
  width: 22px;
  height: 22px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--accent-blue), var(--accent-blue-dark));
  cursor: pointer;
  border: 3px solid var(--border-color);
  box-shadow: 0 2px 10px rgba(16, 185, 129, 0.5); /* Changed accent color for thumb */
  transition: all 0.2s ease;
}

.temperatuur-converter-card .temp-slider::-webkit-slider-thumb:hover {
  transform: scale(1.2);
  box-shadow: 0 4px 15px rgba(16, 185, 129, 0.7);
}

/* Labels onder slider */
.temperatuur-converter-card .slider-labels {
  display: flex;
  justify-content: space-between;
  font-size: 0.8rem;
  color: var(--text-secondary);
  margin-top: -4px;
}

.temperatuur-converter-card .operation-buttons {
  display: flex;
  justify-content: center;
  gap: 12px;
  margin-top: 20px;
  flex-wrap: wrap;
}

.temperatuur-converter-card .operation-btn {
  /* Niet-actief (grijs) */
  background: linear-gradient(135deg, #333 0%, #2a2a2a 100%); /* Donkergrijs */
  color: white;
  border: none;
  border-radius: 10px;
  padding: 12px 20px;
  font-weight: 600;
  font-size: 0.95rem;
  cursor: pointer;
  transition: all 0.2s ease;
  min-width: 80px;
  position: relative;
  overflow: hidden;
  box-shadow: 0 4px 15px rgba(0, 0, 0, 0.2); /* Subtiele schaduw voor grijs */
}

.temperatuur-converter-card .operation-btn::before {
  content: '';
  position: absolute;
  top: 50%;
  left: 50%;
  width: 0;
  height: 0;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.1);
  transform: translate(-50%, -50%);
  transition: width 0.4s, height 0.4s;
}

.temperatuur-converter-card .operation-btn:hover::before {
  width: 150px;
  height: 150px;
}

.temperatuur-converter-card .operation-btn:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(0, 0, 0, 0.4); /* Iets donkerdere schaduw bij hover */
}

.temperatuur-converter-card .operation-btn.active {
  /* Actief (groen) */
  background: linear-gradient(135deg, var(--strength-strong) 0%, var(--strength-strong-light) 100%);
  border-color: var(--strength-strong);
  box-shadow: 0 4px 15px rgba(16, 185, 129, 0.4); /* Groene schaduw voor actief */
}

.temperatuur-converter-card .current-temp {
  margin-top: 20px;
  font-weight: 700;
  font-size: 1.4rem;
  color: var(--accent-blue); /* Deze kleur kan ook naar groen als gewenst */
}

.temperatuur-converter-card .result-box {
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  gap: 20px;
  margin-top: 10px;
}

.temperatuur-converter-card .result-item {
  background: var(--overlay-dark);
  border: 1px solid var(--border-dark);
  border-radius: 10px;
  padding: 12px 16px;
  min-width: 110px;
  font-weight: 700;
  font-size: 1.1rem;
  color: var(--text-primary);
  text-align: center;
}

@media (max-width: 768px) {
  .temperatuur-converter-card {
    padding: 20px 12px;
    border-radius: 16px;
    margin: 0 auto !important;
    width: 100% !important;
    max-width: 100% !important;
    overflow: hidden !important;
  }
  
  .temperatuur-converter-card * {
    max-width: 100% !important;
    box-sizing: border-box !important;
  }
  
  .temperatuur-converter-card h1 {
    font-size: 1.5rem;
    margin-bottom: 6px;
  }
  
  .temperatuur-converter-card .intro {
    font-size: 0.85rem;
    margin-bottom: 20px;
  }

  .temperatuur-converter-card .section-box {
    padding: 16px;
    margin-bottom: 16px;
  }

  .temperatuur-converter-card .section-label {
    font-size: 0.9rem;
    margin-bottom: 10px;
  }

  .temperatuur-converter-card .temp-slider {
    height: 6px;
  }

  .temperatuur-converter-card .temp-slider::-webkit-slider-thumb {
    width: 18px;
    height: 18px;
    border: 2px solid var(--border-color);
  }

  .temperatuur-converter-card .slider-labels {
    font-size: 0.75rem;
  }

  .temperatuur-converter-card .operation-buttons {
    gap: 8px;
    margin-top: 15px;
  }
  
  .temperatuur-converter-card .operation-btn {
    padding: 10px 15px;
    font-size: 0.85rem;
    min-width: 60px;
  }

  .temperatuur-converter-card .current-temp {
    margin-top: 15px;
    font-size: 1.2rem;
  }

  .temperatuur-converter-card .result-box {
    gap: 12px;
  }

  .temperatuur-converter-card .result-item {
    padding: 10px 12px;
    min-width: 90px;
    font-size: 1rem;
  }
}

/* Extra small screens (iPhone SE, small phones) */
@media (max-width: 375px) {
  .temperatuur-converter-card {
    padding: 16px 10px;
  }
  
  .temperatuur-converter-card h1 {
    font-size: 1.3rem;
  }

  .temperatuur-converter-card .intro {
    font-size: 0.8rem;
  }

  .temperatuur-converter-card .operation-btn {
    padding: 8px 12px;
    font-size: 0.8rem;
    min-width: unset;
  }

  .temperatuur-converter-card .result-item {
    min-width: 80px;
    font-size: 0.9rem;
  }
}