.chart-container {
    position: relative;
    height: 400px;
    width: 100%;
}

/* Custom button styles */
.btn-primary {
    background-color: #2563eb; /* blue-600 */
    color: white;
    padding: 0.75rem 1.5rem;
    border-radius: 0.5rem;
    font-weight: 600;
    transition: background-color 0.2s;
}
.btn-primary:hover {
    background-color: #1d4ed8; /* blue-700 */
}
.btn-primary:disabled {
    background-color: #9ca3af; /* gray-400 */
    cursor: not-allowed;
}

.btn-secondary {
    background-color: #e5e7eb; /* gray-200 */
    color: #1f2937; /* gray-800 */
    padding: 0.75rem 1.5rem;
    border-radius: 0.5rem;
    font-weight: 600;
    transition: background-color 0.2s;
}
.btn-secondary:hover {
    background-color: #d1d5db; /* gray-300 */
}
.btn-secondary:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

.dark .btn-secondary {
    background-color: #374151; /* gray-700 */
    color: #f3f4f6; /* gray-100 */
}
.dark .btn-secondary:hover {
    background-color: #4b5563; /* gray-600 */
}

/* Custom input styles */
.form-input {
    width: 100%;
    padding: 0.75rem;
    border-radius: 0.5rem;
    border: 1px solid #d1d5db; /* gray-300 */
    background-color: #f9fafb; /* gray-50 */
}
.dark .form-input {
    border-color: #4b5563; /* gray-600 */
    background-color: #374151; /* gray-700 */
    color: #f3f4f6; /* gray-100 */
}

.form-select {
     width: 100%;
    padding: 0.75rem;
    border-radius: 0.5rem;
    border: 1px solid #d1d5db; /* gray-300 */
    background-color: #f9fafb; /* gray-50 */
}

.dark .form-select {
    border-color: #4b5563; /* gray-600 */
    background-color: #374151; /* gray-700 */
    color: #f3f4f6; /* gray-100 */
}

/* Stepper styles */
.stepper-item {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    color: #6b7280; /* gray-500 */
    font-weight: 500;
    flex-grow: 1;
}
.stepper-item.active {
    color: #2563eb; /* blue-600 */
    font-weight: 600;
}
.stepper-item.completed {
    color: #16a34a; /* green-600 */
}

.stepper-item .step-counter {
    width: 2rem;
    height: 2rem;
    border-radius: 9999px;
    display: flex;
    align-items: center;
    justify-content: center;
    border: 2px solid #d1d5db; /* gray-300 */
    transition: all 0.2s;
}

.stepper-item.active .step-counter {
    border-color: #2563eb; /* blue-600 */
    background-color: #2563eb;
    color: white;
}

.stepper-item.completed .step-counter {
    border-color: #16a34a; /* green-600 */
    background-color: #16a34a;
    color: white;
}

.stepper-line {
    flex-grow: 1;
    height: 2px;
    background-color: #e5e7eb; /* gray-200 */
}