/* Kalkulačky - každá v samostatné sekci */
.calculator-container {
  width: 100%;
  max-width: 500px;
  margin: 0 auto;
}

.formula {
  text-align: center;
  font-style: italic;
  margin-bottom: 20px;
  color: var(--accent);
  font-weight: 600;
}

.input-group {
  margin-bottom: 15px;
}

.input-group label {
  display: block;
  margin-bottom: 5px;
  font-weight: 600;
  color: var(--text);
}

.input-group input {
  width: 100%;
  padding: 10px;
  border-radius: 8px;
  border: 1px solid var(--border);
  background: var(--glass);
  color: var(--text);
  font-size: 16px;
}

.input-group input:focus {
  outline: none;
  border-color: var(--accent);
}

.button-group {
  display: flex;
  gap: 10px;
  margin: 15px 0;
}

.button-group .funfact-btn {
  flex: 1;
}

/* Vylepšené výsledkové boxy */
.result {
  margin-top: 16px;
  padding: 16px;
  border-radius: 12px;
  background: var(--glass);
  border: 1px solid var(--border);
  font-weight: 600;
  color: var(--accent);
  white-space: pre-line;
  box-shadow: var(--shadow);
  transition: all 0.25s ease;
  text-align: center;
  font-size: 15px;
}

.result:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 25px rgba(0,0,0,0.1);
}

.dark .result {
  background: var(--card);
  border-color: rgba(255,255,255,0.08);
}

/* Dark theme pro inputy */
.dark .input-group input {
  background: var(--card);
}

/* Tlačítka v kalkulačkách - použijeme stejné jako funfact-btn */
.calculator-container .funfact-btn {
  margin-top: 5px;
  width: 100%;
}

@media (max-width: 580px) {
  .calculator-container {
    max-width: 100%;
  }
  
  .button-group {
    flex-direction: column;
  }
}

/* Styly pro řádky s jednotkami */
/* Styly pro řádky s jednotkami - vylepšené */
.input-row {
  display: flex;
  gap: 12px;
  margin-bottom: 16px;
  align-items: flex-end;
}

.input-row .input-group {
  flex: 1;
  margin-bottom: 0;
}

.input-row .input-group label {
  margin-bottom: 6px;
  font-size: 14px;
  font-weight: 600;
  color: var(--text);
}

.input-row input,
.input-row select {
  width: 100%;
  padding: 12px;
  border-radius: 10px;
  border: 1px solid var(--border);
  background: var(--glass);
  color: var(--text);
  font-size: 15px;
  transition: all 0.25s ease;
  box-shadow: var(--shadow);
}

.input-row input:focus,
.input-row select:focus {
  outline: none;
  border-color: var(--accent);
  box-shadow: 0 0 0 3px rgba(45, 189, 214, 0.15);
}

.input-row input:hover,
.input-row select:hover {
  border-color: var(--accent);
}

/* Styly pro select v kalkulačkách - vylepšené */
.input-group select {
  width: 100%;
  padding: 12px;
  border-radius: 10px;
  border: 1px solid var(--border);
  background: var(--glass);
  color: var(--text);
  font-size: 15px;
  cursor: pointer;
  transition: all 0.25s ease;
  box-shadow: var(--shadow);
  appearance: none;
  background-image: url("data:image/svg+xml;charset=UTF-8,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='currentColor' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3e%3cpolyline points='6 9 12 15 18 9'%3e%3c/polyline%3e%3c/svg%3e");
  background-repeat: no-repeat;
  background-position: right 12px center;
  background-size: 16px;
}

.input-group select:focus {
  outline: none;
  border-color: var(--accent);
  box-shadow: 0 0 0 3px rgba(45, 189, 214, 0.15);
}

.input-group select:hover {
  border-color: var(--accent);
}

/* Dark theme pro inputy a selecty */
.dark .input-group input,
.dark .input-group select,
.dark .input-row input,
.dark .input-row select {
  background: var(--card);
  border-color: rgba(255,255,255,0.1);
}

.dark .input-group input:focus,
.dark .input-group select:focus,
.dark .input-row input:focus,
.dark .input-row select:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px rgba(45, 189, 214, 0.25);
}

/* Responzivita pro mobil */
@media (max-width: 580px) {
  .input-row {
    flex-direction: column;
    gap: 8px;
  }
  
  .input-row .input-group {
    margin-bottom: 8px;
  }
  
  .input-row input,
  .input-row select,
  .input-group input,
  .input-group select {
    padding: 10px;
    font-size: 14px;
  }
}

/* Zvýraznění aktivního inputu */
.input-group input:not(:placeholder-shown) {
  border-color: var(--accent);
  background: rgba(45, 189, 214, 0.05);
}

.dark .input-group input:not(:placeholder-shown) {
  background: rgba(45, 189, 214, 0.1);
}

/* Placeholder styling */
.input-group input::placeholder {
  color: var(--muted);
  opacity: 0.7;
}

.dark .input-group input::placeholder {
  color: var(--muted);
}

/* Speciální styling pro kondenzátorovou kalkulačku */
.calculator-container .input-row:first-of-type {
  margin-top: 8px;
}

.calculator-container .input-row:last-of-type {
  margin-bottom: 20px;
}