.gpa-calculator .mode-selector {
    display: flex;
    gap: 8px;
    margin-bottom: 24px;
    flex-wrap: wrap;
}

.gpa-calculator .mode-btn {
    padding: 8px 16px;
    background: #f1f5f9;
    border: 1px solid #e2e8f0;
    border-radius: 8px;
    font-size: 0.85rem;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.2s ease;
    font-family: 'Outfit', sans-serif;
    color: #0f172a;
}

.gpa-calculator .mode-btn:hover {
    background: #e2e8f0;
}

.gpa-calculator .mode-btn.active {
    background: #0f172a;
    color: #ffffff;
    border-color: #0f172a;
}

.gpa-calculator .gpa-mode {
    max-width: 600px;
    margin: 0 auto;
}

.gpa-calculator .course-list {
    margin-bottom: 16px;
}

.gpa-calculator .course-row {
    display: flex;
    gap: 12px;
    align-items: flex-end;
    margin-bottom: 8px;
    padding: 12px;
    background: #f8fafc;
    border-radius: 8px;
    border: 1px solid #eef2f6;
}

.gpa-calculator .course-field {
    flex: 1;
}

.gpa-calculator .course-field label {
    display: block;
    font-weight: 500;
    color: #0f172a;
    margin-bottom: 2px;
    font-size: 0.8rem;
}

.gpa-calculator .course-field select,
.gpa-calculator .course-field input {
    width: 100%;
    padding: 6px 10px;
    border: 1px solid #e2e8f0;
    border-radius: 6px;
    font-size: 0.9rem;
    font-family: 'Outfit', sans-serif;
    background: #ffffff;
    color: #0f172a;
}

.gpa-calculator .course-field input:focus,
.gpa-calculator .course-field select:focus {
    outline: none;
    border-color: #3b82f6;
    box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.1);
}

.gpa-calculator .remove-btn {
    padding: 6px 12px;
    background: #fee2e2;
    border: none;
    border-radius: 6px;
    font-size: 1rem;
    cursor: pointer;
    color: #991b1b;
    transition: all 0.2s ease;
}

.gpa-calculator .remove-btn:hover {
    background: #fecaca;
}

.gpa-calculator .btn-sm {
    padding: 6px 14px;
    background: #f1f5f9;
    border: 1px solid #e2e8f0;
    border-radius: 6px;
    font-size: 0.8rem;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.2s ease;
    font-family: 'Outfit', sans-serif;
    color: #0f172a;
    margin-right: 8px;
}

.gpa-calculator .btn-sm:hover {
    background: #e2e8f0;
}

.gpa-calculator .form-group {
    margin-bottom: 16px;
}

.gpa-calculator .form-group label {
    display: block;
    font-weight: 500;
    color: #0f172a;
    margin-bottom: 4px;
}

.gpa-calculator .form-group input {
    width: 100%;
    padding: 8px 12px;
    border: 1px solid #e2e8f0;
    border-radius: 6px;
    font-size: 0.95rem;
    font-family: 'Outfit', sans-serif;
    background: #ffffff;
    color: #0f172a;
}

.gpa-calculator .form-group input:focus {
    outline: none;
    border-color: #3b82f6;
    box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.1);
}

.gpa-calculator .result-display {
    margin-top: 20px;
    padding: 20px;
    background: #f8fafc;
    border-radius: 12px;
    border: 1px solid #eef2f6;
    text-align: center;
}

.gpa-calculator .result-value {
    display: block;
    font-size: 2rem;
    font-weight: 700;
    color: #0f172a;
}

.gpa-calculator .result-label {
    font-size: 0.85rem;
    color: #64748b;
}