.content {
      flex: 1;
      padding: 20px;
    }

    .container {
      max-width: 700px;
      margin: auto;
      background: white;
      padding: 25px;
      border-radius: 10px;
      box-shadow: 0 0 10px #ccc;
    }

    .about-section {
      margin-top: 40px;
      background: #f1f5f9;
      padding: 25px;
      border-radius: 8px;
      font-size: 15px;
      line-height: 1.6;
    }

    .about-section h3 {
      font-size: 20px;
      margin-bottom: 10px;
    }

    .about-section ul {
      padding-left: 20px;
    }

   

    @media (max-width: 768px) {
      .dropdown-group {
        flex-direction: column;
      }
    }


/* Container Content Box */
/*.content, .container {
  flex: 1;
  max-width: 700px;
  margin: 40px auto;
  padding: 30px;
  background: #ffffff;
  box-shadow: 0 4px 20px rgba(0,0,0,0.05);
  border-radius: 10px;
}*/

/* Page Heading */
h1, .header {
  font-size: 24px;
  font-weight: bold;
  margin-bottom: 25px;
  color: #1e3a8a;
  text-align: center;
}

/* Form Row */
.form-row {
  margin-bottom: 25px;
}

/* Labels */
label {
  display: block;
  font-weight: 600;
  margin-bottom: 10px;
  color: #374151;
}

/* Inputs & Dropdowns */
select,
input[type="date"] {
  padding: 12px;
  font-size: 15px;
  border: 1px solid #d1d5db;
  border-radius: 6px;
  background: #f9fafb;
  color: #111827;
  width: auto;
  margin-right: 10px;
}

/* Calendar Button */
.calendar-button {
  padding: 10px 14px;
  background-color: #f3f4f6;
  border: 1px solid #d1d5db;
  border-radius: 6px;
  cursor: pointer;
  font-size: 18px;
  color: #374151;
  transition: background 0.2s ease;
}
.calendar-button:hover {
  background-color: #e5e7eb;
}

/* Submit Button */
button.btn, .calculate-btn {
  padding: 14px 30px;
  background: linear-gradient(135deg, #d0e7ffcc, #90caf9cc);
  color: #002e5b;
  border-color: #002e5b;
  /*background-color: #2563eb;*/
  /*color: #fff;*/
  font-size: 16px;
  border: none;
  border-radius: 6px;
  cursor: pointer;
  transition: background 0.3s ease;
}
button.btn:hover, .calculate-btn:hover {
  /*background-color: #1d4ed8;*/
}

/* Result Box */
.result-box {
  margin-top: 30px;
  padding: 20px;
  background-color: #e0f2fe;
  border-left: 5px solid #2563eb;
  border-radius: 6px;
}
.result-box h2 {
  font-size: 20px;
  color: #1e3a8a;
  margin-bottom: 10px;
}
.result-box ul {
  list-style: none;
  padding-left: 0;
}
.result-box ul li {
  margin: 8px 0;
  font-size: 16px;
  color: #374151;
}

/* About Section */
.about-section {
  margin-top: 40px;
  background-color: #f1f5f9;
  padding: 25px;
  border-radius: 10px;
  font-size: 15px;
  color: #374151;
  line-height: 1.6;
}
.about-section h3 {
  font-size: 18px;
  margin-bottom: 12px;
}
.calendar-wrapper {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 10px;
  position: relative;
}

.hidden-calendar {
  position: absolute;
  opacity: 0;
  pointer-events: none;
  width: 0;
  height: 0;
}


/* Responsive for small screens */
@media (max-width: 768px) {
  .dropdown-group, .form-row {
    flex-direction: column;
  }

  select, input[type="date"] {
    width: 100%;
    margin-right: 0;
    margin-bottom: 10px;
  }

  .calendar-button {
    width: 100%;
    text-align: center;
  }
}