/* --- فلگ‌ها و تب‌ها --- */
.flag-wrapper {
  width: 28px;
  height: 28px;
  border-radius: 50%;
  overflow: hidden;
  display: flex;
  align-items: center;
  justify-content: center;
  background: #f1f1f1;
  margin-left: 6px;
  flex-shrink: 0;
}

.flag-wrapper img {
  width: 22px;
  height: 22px;
  object-fit: cover;
}

.tab {
  display: flex;
  align-items: center;
  gap: 4px;
  padding: 8px 12px;
  border-radius: 10px;
  cursor: pointer;
  font-size: 14px;
  background: #fff;
  border: 1px solid #eee;
}

.tab.active {
  background: #1c2036;
  color: #fff;
}

/* --- دکمه محاسبه --- */
button {
  width: 100%;
  background: #db8132;
  color: #fff;
  font-size: 16px;
  font-weight: 600;
  padding: 12px;
  border: none;
  border-radius: 10px;
  cursor: pointer;
  transition: background 0.3s ease, transform 0.2s ease;
}

button:hover {
  background: #1c2036;
  transform: translateY(-2px);
}

button:active {
  background: #1c2036;
  transform: translateY(0);
}

/* --- پیام خطا --- */
.error-message {
  color: #d9534f;
  font-size: 13px;
  margin-top: 6px;
  display: none;
  text-align: right;
}

/* --- مخفی/نمایش نسخه‌ها بر اساس دستگاه --- */
#calculator-desktop {
  display: block;
}

#calculator-mobile {
  display: none;
}

@media (max-width: 768px) {
  #calculator-desktop {
    display: none;
  }

 #calculator-mobile {
   display: block !important;
 }
}

/* --- فرم و فیلدها --- */
.form-row.full {
  margin-bottom: 12px;
}

select,
input[type="number"] {
  width: 100%;
  padding: 10px 12px;
  border-radius: 10px;
  border: 1px solid #ccc;
  font-size: 14px;
  box-sizing: border-box;
}