/* 统一表单控件样式系统 - Form Controls System */
/* 基于 design-tokens.css 的变量系统构建 */

/* ===== 表单组容器 - Form Group Container ===== */
.form-group {
    margin-bottom: var(--form-group-margin);
    position: relative;
}

.form-group:last-child {
    margin-bottom: 0;
}

/* ===== 表单标签 - Form Labels ===== */
.form-label,
.form-group label {
    display: block;
    margin-bottom: var(--spacing-sm);
    font-weight: var(--font-weight-semibold);
    color: var(--color-text-primary);
    font-size: var(--font-size-base);
    line-height: var(--line-height-normal);
}

.form-label.required::after,
.form-group label.required::after {
    content: ' *';
    color: var(--color-error);
}

/* ===== 基础输入框样式 - Base Input Styles ===== */
.form-input,
.form-select,
.form-textarea,
.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;
    padding: var(--input-padding);
    border: var(--border-width-medium) var(--border-style-solid) var(--input-border);
    border-radius: var(--radius-md);
    font-size: var(--font-size-base);
    font-family: inherit;
    background: var(--input-bg);
    color: var(--input-text);
    transition: all var(--transition-normal);
    line-height: var(--line-height-normal);
}

/* ===== 焦点状态 - Focus States ===== */
.form-input:focus,
.form-select:focus,
.form-textarea:focus,
.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--input-focus-border);
    box-shadow: 0 0 0 3px var(--input-focus-shadow);
}

/* ===== 禁用状态 - Disabled States ===== */
.form-input:disabled,
.form-select:disabled,
.form-textarea:disabled,
.form-group input:disabled,
.form-group select:disabled,
.form-group textarea:disabled {
    background-color: var(--color-gray-100);
    color: var(--color-text-muted);
    cursor: not-allowed;
    opacity: 0.6;
}

/* ===== 错误状态 - Error States ===== */
.form-input.error,
.form-select.error,
.form-textarea.error,
.form-group.error input,
.form-group.error select,
.form-group.error textarea {
    border-color: var(--color-error);
    box-shadow: 0 0 0 3px rgba(220, 53, 69, 0.1);
}

/* ===== 成功状态 - Success States ===== */
.form-input.success,
.form-select.success,
.form-textarea.success,
.form-group.success input,
.form-group.success select,
.form-group.success textarea {
    border-color: var(--color-success);
    box-shadow: 0 0 0 3px rgba(40, 167, 69, 0.1);
}

/* ===== 文本区域特殊样式 - Textarea Specific ===== */
.form-textarea,
.form-group textarea {
    min-height: 80px;
    resize: vertical;
}

/* ===== 选择框特殊样式 - Select Specific ===== */
.form-select,
.form-group select {
    background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' fill='none' viewBox='0 0 20 20'%3e%3cpath stroke='%236b7280' stroke-linecap='round' stroke-linejoin='round' stroke-width='1.5' d='m6 8 4 4 4-4'/%3e%3c/svg%3e");
    background-position: right var(--spacing-md) center;
    background-repeat: no-repeat;
    background-size: 16px 12px;
    padding-right: var(--spacing-4xl);
    appearance: none;
}

/* ===== 文件输入框 - File Input ===== */
.form-file,
.form-group input[type="file"] {
    padding: var(--spacing-sm);
    border: var(--border-width-medium) var(--border-style-dashed) var(--border-color-light);
    background: var(--color-gray-50);
}

.form-file:hover,
.form-group input[type="file"]:hover {
    border-color: var(--color-primary);
    background: var(--color-primary-lighter);
}

/* ===== 隐藏的文件输入框 - Hidden File Input ===== */
.form-file-hidden,
.file-input,
.file-input-hidden {
    display: none;
}

/* ===== 复选框和单选框 - Checkboxes and Radio Buttons ===== */
.form-checkbox,
.form-radio {
    position: relative;
    display: flex;
    align-items: center;
    margin-bottom: var(--spacing-md);
}

.form-checkbox input[type="checkbox"],
.form-radio input[type="radio"] {
    width: auto;
    margin-right: var(--spacing-md);
    cursor: pointer;
}

.form-checkbox label,
.form-radio label {
    margin-bottom: 0;
    cursor: pointer;
    font-weight: var(--font-weight-normal);
}

/* 自定义复选框样式 */
.custom-checkbox {
    position: relative;
    display: flex;
    align-items: center;
    cursor: pointer;
    margin-bottom: var(--spacing-md);
}

.custom-checkbox input[type="checkbox"] {
    display: none;
}

.custom-checkbox .checkmark {
    width: 20px;
    height: 20px;
    background: var(--color-gray-200);
    border-radius: var(--radius-sm);
    margin-right: var(--spacing-md);
    position: relative;
    transition: all var(--transition-normal);
    border: var(--border-width-medium) var(--border-style-solid) var(--border-color-light);
}

.custom-checkbox input[type="checkbox"]:checked + .checkmark {
    background: var(--color-primary);
    border-color: var(--color-primary);
}

.custom-checkbox input[type="checkbox"]:checked + .checkmark::after {
    content: '✓';
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    color: var(--color-text-white);
    font-size: 12px;
    font-weight: var(--font-weight-bold);
}

/* ===== 表单行布局 - Form Row Layout ===== */
.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-lg);
    margin-bottom: var(--form-group-margin);
}

.form-row.three-cols {
    grid-template-columns: 1fr 1fr 1fr;
}

.form-row.four-cols {
    grid-template-columns: 1fr 1fr 1fr 1fr;
}

/* ===== 表单网格布局 - Form Grid Layout ===== */
.form-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: var(--spacing-3xl);
}

/* ===== 帮助文本 - Help Text ===== */
.form-help,
.help-text {
    color: var(--color-text-muted);
    font-size: var(--font-size-sm);
    margin-top: var(--spacing-xs);
    line-height: var(--line-height-normal);
}

.form-help.error,
.help-text.error {
    color: var(--color-error);
}

.form-help.success,
.help-text.success {
    color: var(--color-success);
}

/* ===== 表单验证消息 - Form Validation Messages ===== */
.form-error-message {
    color: var(--color-error);
    font-size: var(--font-size-sm);
    margin-top: var(--spacing-xs);
    display: none;
}

.form-group.error .form-error-message {
    display: block;
}

.form-success-message {
    color: var(--color-success);
    font-size: var(--font-size-sm);
    margin-top: var(--spacing-xs);
    display: none;
}

.form-group.success .form-success-message {
    display: block;
}

/* ===== 输入框组合 - Input Groups ===== */
.input-group {
    position: relative;
    display: flex;
    align-items: center;
}

.input-group .form-input {
    flex: 1;
    border-top-right-radius: 0;
    border-bottom-right-radius: 0;
    border-right: none;
}

.input-group .input-group-append {
    display: flex;
    align-items: center;
}

.input-group .input-group-append .btn-base {
    border-top-left-radius: 0;
    border-bottom-left-radius: 0;
    margin: 0;
}

/* ===== 滑块控件 - Slider Controls ===== */
.slider-container {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-sm);
}

.form-slider,
.config-slider {
    flex: 1;
    height: 6px;
    border-radius: 3px;
    background: var(--color-gray-200);
    outline: none;
    -webkit-appearance: none;
    appearance: none;
}

.form-slider::-webkit-slider-thumb,
.config-slider::-webkit-slider-thumb {
    -webkit-appearance: none;
    appearance: none;
    width: 20px;
    height: 20px;
    border-radius: var(--radius-round);
    background: var(--color-primary);
    cursor: pointer;
    box-shadow: var(--shadow-sm);
    transition: all var(--transition-normal);
}

.form-slider::-webkit-slider-thumb:hover,
.config-slider::-webkit-slider-thumb:hover {
    background: var(--color-primary-dark);
    box-shadow: var(--shadow-md);
}

.form-slider::-moz-range-thumb,
.config-slider::-moz-range-thumb {
    width: 20px;
    height: 20px;
    border-radius: var(--radius-round);
    background: var(--color-primary);
    cursor: pointer;
    border: none;
    box-shadow: var(--shadow-sm);
}

.slider-value {
    min-width: 80px;
    text-align: center;
    background: var(--color-primary);
    color: var(--color-text-white);
    padding: var(--spacing-xs) var(--spacing-md);
    border-radius: var(--radius-sm);
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-semibold);
}

/* ===== 搜索框 - Search Input ===== */
.form-search {
    position: relative;
}

.form-search::before {
    content: '🔍';
    position: absolute;
    left: var(--spacing-md);
    top: 50%;
    transform: translateY(-50%);
    color: var(--color-text-muted);
    z-index: 1;
}

.form-search .form-input {
    padding-left: var(--spacing-4xl);
}

/* ===== 响应式调整 - Responsive Adjustments ===== */
@media (max-width: 768px) {
    .form-row {
        grid-template-columns: 1fr;
        gap: var(--spacing-md);
    }
    
    .form-row.three-cols,
    .form-row.four-cols {
        grid-template-columns: 1fr;
    }
    
    .form-grid {
        grid-template-columns: 1fr;
        gap: var(--spacing-xl);
    }
    
    .input-group {
        flex-direction: column;
        gap: var(--spacing-sm);
    }
    
    .input-group .form-input {
        border-radius: var(--radius-md);
        border-right: var(--border-width-medium) var(--border-style-solid) var(--border-color-light);
    }
    
    .input-group .input-group-append .btn-base {
        border-radius: var(--radius-md);
        width: 100%;
    }
    
    .slider-container {
        flex-direction: column;
        align-items: stretch;
        gap: var(--spacing-sm);
    }
    
    .slider-value {
        align-self: center;
    }
}

/* ===== 特殊表单组件 - Special Form Components ===== */

/* 模板示例框 */
.template-examples {
    background: var(--color-gray-50);
    padding: var(--spacing-lg);
    border-radius: var(--radius-md);
    margin-top: var(--spacing-md);
    font-size: var(--font-size-sm);
    line-height: var(--line-height-normal);
    border: var(--border-width-thin) var(--border-style-solid) var(--border-color-light);
}

.template-examples h4 {
    margin: 0 0 var(--spacing-sm) 0;
    color: var(--color-text-primary);
    font-size: var(--font-size-base);
}

.template-examples ul {
    margin: var(--spacing-xs) 0;
    padding-left: var(--spacing-xl);
}

.template-examples li {
    margin: var(--spacing-xs) 0;
    color: var(--color-text-secondary);
}

/* 自定义模型配置行 */
.model-selection-row,
.api-key-row {
    display: flex;
    gap: var(--spacing-sm);
    align-items: center;
}

.model-selection-row .form-input,
.model-selection-row .form-select,
.api-key-row .form-input {
    flex: 1;
}

.custom-model-input {
    margin-top: var(--spacing-sm);
}

.custom-model-input label {
    display: block;
    margin-bottom: var(--spacing-xs);
    font-size: var(--font-size-sm);
    color: var(--color-text-muted);
}

.custom-model-input .form-input {
    width: 100%;
    padding: var(--spacing-sm);
    border: var(--border-width-thin) var(--border-style-solid) var(--border-color-light);
    border-radius: var(--radius-sm);
}

/* 测试结果显示 */
.test-result {
    margin-top: var(--spacing-md);
    padding: var(--spacing-sm) var(--spacing-md);
    border-radius: var(--radius-sm);
    font-size: var(--font-size-sm);
    display: none;
}

.test-result.success {
    background: var(--color-success-light);
    border: var(--border-width-thin) var(--border-style-solid) #c3e6cb;
    color: #155724;
}

.test-result.error {
    background: var(--color-error-light);
    border: var(--border-width-thin) var(--border-style-solid) #f5c6cb;
    color: #721c24;
}