/* assets/css/form.css */
:root {
    --kf-primary: #0056b3;
    --kf-primary-hover: #004494;
    --kf-error: #dc3545;
    --kf-success: #28a745;
    --kf-text: #333;
    --kf-border: #ccc;
    --kf-bg: #fff;
    --kf-radius: 4px;
    --kf-spacing: 1rem;
    --kf-font: system-ui, -apple-system, sans-serif;
}

.kf-form-container {
    font-family: var(--kf-font);
    color: var(--kf-text);
    background: transparent;
    width: 100%;
}

.kf-form-group {
    margin-bottom: var(--kf-spacing);
    display: flex;
    flex-direction: column;
}

.kf-label {
    margin-bottom: 0.25rem;
    font-weight: 600;
}

.kf-input, .kf-textarea {
    padding: 0.5rem;
    border: 1px solid var(--kf-border);
    border-radius: var(--kf-radius);
    font-family: inherit;
    font-size: 1rem;
    width: 100%;
    box-sizing: border-box;
}

.kf-input:focus, .kf-textarea:focus {
    outline: 2px solid var(--kf-primary);
    outline-offset: 1px;
}

.kf-input[aria-invalid="true"], .kf-textarea[aria-invalid="true"] {
    border-color: var(--kf-error);
    outline-color: var(--kf-error);
}

.kf-textarea {
    min-height: 120px;
    resize: vertical;
}

.kf-checkbox-group {
    flex-direction: row;
    align-items: center;
    gap: 0.5rem;
}

.kf-checkbox-group .kf-label {
    margin-bottom: 0;
    font-weight: normal;
}

.kf-checkbox-group .kf-input {
    width: auto;
}

.kf-btn {
    background-color: var(--kf-primary);
    color: white;
    border: none;
    padding: 0.75rem 1.5rem;
    border-radius: var(--kf-radius);
    font-size: 1rem;
    cursor: pointer;
    font-weight: 600;
}

.kf-btn:hover {
    background-color: var(--kf-primary-hover);
}

.kf-btn:focus-visible {
    outline: 2px solid #000;
    outline-offset: 2px;
}

.kf-btn:disabled {
    opacity: 0.7;
    cursor: not-allowed;
}

.kf-alert-container {
    margin-bottom: var(--kf-spacing);
}

.kf-alert {
    padding: 0.75rem;
    border-radius: var(--kf-radius);
}

.kf-alert--error {
    background-color: #f8d7da;
    color: #721c24;
    border: 1px solid #f5c6cb;
}

.kf-alert--success {
    background-color: #d4edda;
    color: #155724;
    border: 1px solid #c3e6cb;
}

.kf-sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border: 0;
}
/* Form Extensibility & Layouts */
.kf-fieldset { border: none; border-radius: 0; padding: 10px 0 20px 0; margin-bottom: 10px; background: transparent; }
.kf-fieldset legend { font-weight: bold; font-size: 1.2em; color: var(--kf-text); padding: 0 0 15px 0; width: 100%; border-bottom: 1px solid rgba(0,0,0,0.1); margin-bottom: 20px; }
.kf-row { display: flex; flex-wrap: wrap; gap: 15px; margin-bottom: 15px; }
.kf-col { flex: 1; min-width: 200px; }
.kf-product-card { border: 1px solid #e2e8f0; padding: 15px; border-radius: 6px; margin-bottom: 15px; background: transparent; transition: all 0.2s; }
.kf-product-card:hover { border-color: var(--kf-primary); }
.kf-product-header { display: flex; align-items: center; font-weight: bold; font-size: 1.05em; cursor: pointer; margin-bottom: 0; }
.kf-product-header input { margin-right: 10px; transform: scale(1.2); }
.kf-sub-options { margin-top: 15px; padding-left: 20px; border-left: 3px solid var(--kf-primary); }
.kf-price-hint { font-size: 0.9em; color: #64748b; margin-left: auto; font-weight: normal; }
.kf-radio-group { display: flex; gap: 20px; flex-wrap: wrap; margin-top: 5px; }
.kf-radio-group label { display: flex; align-items: center; font-weight: normal; cursor: pointer; }
.kf-radio-group input { margin-right: 8px; }