/* Container chính */
#dcv-calculator-wrapper {
    background: #ffffff;
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    overflow: hidden;
    border: 1px solid #e0e0e0;
}

/* Header */
.dcv-header {
    background: #2196f3; /* Màu chủ đạo */
    color: white;
    padding: 20px;
    text-align: center;
}
.dcv-header h3 {
    margin: 0;
    font-size: 22px;
    font-weight: 600;
    color: white;
}
.dcv-header p {
    margin: 5px 0 0;
    font-size: 16px;
	    font-weight: 500;
}

/* Form Body */
#dcv-form {
    padding: 25px;
}

.dcv-group {
    margin-bottom: 10px;
}

.dcv-label {
    display: block;
    font-weight: 600;
    margin-bottom: 8px;
    color: #333;
    font-size: 15px;
}

/* Input Date */
.dcv-input-icon {
    position: relative;
}
#dcv-dob {
    width: 100%;
    padding: 12px 15px;
    border: 1px solid #ddd;
    border-radius: 8px;
    font-size: 16px;
    transition: border 0.3s;
    box-sizing: border-box;
}
#dcv-dob:focus {
    border-color: #2196f3;
    outline: none;
}
.calendar-icon {
    position: absolute;
    right: 15px;
    top: 50%;
    transform: translateY(-50%);
    pointer-events: none;
}

/* Radio Group (Button Style) */
.dcv-radio-group {
    display: flex;
    gap: 10px;
}
.dcv-radio-btn {
    flex: 1;
    position: relative;
    cursor: pointer;
}
.dcv-radio-btn input {
    position: absolute;
    opacity: 0;
    cursor: pointer;
}
.dcv-radio-btn span {
    display: block;
    text-align: center;
    padding: 10px;
    border: 1px solid #ddd;
    border-radius: 8px;
    background: #f9f9f9;
    transition: all 0.3s;
    font-weight: 500;
    color: #555;
}
/* Active state styling */
.dcv-radio-btn input:checked + span {
    background: #e8f5e9;
    border-color: #2196f3;
    color: #2e7d32;
    font-weight: bold;
}

/* Rules Options (Box Style) */
.dcv-rules-options {
    display: flex;
    flex-direction: column;
    gap: 10px;
}
.dcv-radio-box {
    cursor: pointer;
    position: relative;
}
.dcv-radio-box input {
    position: absolute;
    opacity: 0;
}
.dcv-box-content {
    display: block;
    padding: 12px;
    border: 1px solid #ddd;
    border-radius: 8px;
    background: #fff;
}
.dcv-box-content small {
    display: block;
    color: #888;
    margin-top: 3px;
    font-weight: normal;
}
.dcv-radio-box input:checked + .dcv-box-content {
    border-color: #2196f3;
    background: #f1f8e9;
}

/* Button */
.dcv-submit-btn {
    width: 100%;
    padding: 14px;
    background: #2196f3;
    color: white;
    border: none;
    border-radius: 8px;
    font-size: 16px;
    font-weight: bold;
    cursor: pointer;
    transition: background 0.3s;
    margin-top: 10px;
}
.dcv-submit-btn:hover {
    background: #45a049;
}

/* Result Box */
.dcv-result-box {
    margin: 0 25px 25px;
    padding: 20px;
    background: #fff8e1; /* Màu vàng nhạt nổi bật */
    border: 1px dashed #ffa000;
    border-radius: 8px;
    color: #333;
    line-height: 1.6;
    animation: fadeIn 0.5s;
}
.dcv-result-box strong {
    color: #d84315;
}

@keyframes fadeIn {
    from { opacity: 0; transform: translateY(10px); }
    to { opacity: 1; transform: translateY(0); }
}

/* Responsive */
@media (max-width: 480px) {
    .dcv-radio-group {
        flex-direction: column;
    }
}