/* ========================================
   通用表单样式
   ======================================== */

.form-group {
    margin-bottom: 20px;
}

.form-group label {
    display: block;
    margin-bottom: 8px;
    font-weight: 500;
    color: var(--text-primary);
    font-size: 14px;
}

.form-group .text-danger {
    color: var(--danger-color);
}

.form-group .text-muted {
    color: var(--text-secondary);
}

.form-control {
    width: 100%;
    padding: 10px 14px;
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    font-size: 14px;
    color: var(--text-primary);
    background: var(--bg-primary);
    transition: var(--transition);
    outline: none;
}

.form-control:focus {
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(79, 70, 229, 0.1);
}

.form-control:disabled,
.form-control:read-only {
    background: var(--bg-tertiary);
    cursor: not-allowed;
}

.form-control::placeholder {
    color: var(--text-tertiary);
}

textarea.form-control {
    resize: vertical;
    min-height: 80px;
    font-family: inherit;
}

.form-text {
    display: block;
    margin-top: 6px;
    font-size: 12px;
}

.form-text.text-muted {
    color: var(--text-secondary);
}

/* 表单行布局 */
.form-row {
    display: flex;
    gap: 16px;
    margin-bottom: 20px;
}

.form-row .form-group {
    flex: 1;
    margin-bottom: 0;
}

.form-row .col-md-6 {
    flex: 0 0 calc(50% - 8px);
}

.form-row .col-md-4 {
    flex: 0 0 calc(33.333% - 11px);
}

.form-row .col-md-3 {
    flex: 0 0 calc(25% - 12px);
}

/* Checkbox 样式 */
.form-group input[type="checkbox"] {
    width: auto;
    margin-right: 8px;
    cursor: pointer;
}

.form-group label:has(input[type="checkbox"]) {
    display: flex;
    align-items: center;
    font-weight: normal;
    cursor: pointer;
}

/* 数字输入框 */
input[type="number"].form-control {
    appearance: textfield;
}

input[type="number"].form-control::-webkit-inner-spin-button,
input[type="number"].form-control::-webkit-outer-spin-button {
    appearance: none;
    margin: 0;
}

/* 错误状态 */
.form-control.is-invalid {
    border-color: var(--danger-color);
}

.form-control.is-invalid:focus {
    box-shadow: 0 0 0 3px rgba(239, 68, 68, 0.1);
}

.invalid-feedback {
    display: block;
    margin-top: 6px;
    font-size: 12px;
    color: var(--danger-color);
}

/* badge 徽章样式补充 */
.badge-secondary {
    background: #e5e7eb;
    color: #4b5563;
}

.badge-info {
    background: #dbeafe;
    color: #1e40af;
}

/* ========================================
   移动端表单优化
   ======================================== */

/* 改进的表单控件 */
@media (max-width: 768px) {
    .form-group {
        margin-bottom: 16px;
    }
    
    .form-group label {
        font-size: 13px;
        margin-bottom: 6px;
        font-weight: 600;
    }
    
    .form-control {
        padding: 12px 14px;
        font-size: 16px; /* 防止iOS自动缩放 */
        border-radius: var(--radius-md);
        border: 2px solid var(--border-color);
    }
    
    .form-control:focus {
        border-color: var(--primary-color);
        box-shadow: 0 0 0 4px rgba(79, 70, 229, 0.1);
    }
    
    textarea.form-control {
        min-height: 100px;
        resize: vertical;
    }
    
    /* 选择框优化 */
    select.form-control {
        padding: 12px 14px;
        font-size: 16px;
        background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 12 12'%3E%3Cpath fill='%236b7280' d='M6 9L1 4h10z'/%3E%3C/svg%3E");
        background-repeat: no-repeat;
        background-position: right 14px center;
        background-size: 12px;
        appearance: none;
        cursor: pointer;
    }
    
    /* 表单行 - 移动端垂直布局 */
    .form-row {
        flex-direction: column;
        gap: 0;
    }
    
    .form-row .form-group,
    .form-row .col-md-6,
    .form-row .col-md-4,
    .form-row .col-md-3 {
        flex: 1 1 100%;
        width: 100%;
        margin-bottom: 16px;
    }
    
    /* 复选框和单选框 */
    .form-group input[type="checkbox"],
    .form-group input[type="radio"] {
        width: 20px;
        height: 20px;
        margin-right: 10px;
        cursor: pointer;
    }
    
    .form-group label:has(input[type="checkbox"]),
    .form-group label:has(input[type="radio"]) {
        display: flex;
        align-items: center;
        gap: 10px;
        font-size: 14px;
        cursor: pointer;
        padding: 12px;
        background: var(--bg-secondary);
        border-radius: var(--radius-md);
        margin-bottom: 8px;
    }
    
    /* 错误状态 */
    .form-control.is-invalid {
        border-color: var(--danger-color);
        border-width: 2px;
    }
    
    .invalid-feedback {
        font-size: 13px;
        margin-top: 8px;
    }
    
    /* 表单文本提示 */
    .form-text {
        font-size: 12px;
        line-height: 1.5;
        margin-top: 8px;
    }
    
    /* 表单按钮组 */
    .form-buttons {
        display: flex;
        flex-direction: column;
        gap: 10px;
        margin-top: 24px;
    }
    
    .form-buttons .btn {
        width: 100%;
        justify-content: center;
    }
}

/* 超小屏幕优化 */
@media (max-width: 480px) {
    .form-control {
        padding: 11px 12px;
        font-size: 16px;
    }
    
    .form-group label {
        font-size: 13px;
    }
}

/* 文件上传优化 */
.file-upload {
    position: relative;
}

.file-upload input[type="file"] {
    position: absolute;
    opacity: 0;
    width: 100%;
    height: 100%;
    cursor: pointer;
}

.file-upload-label {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 10px;
    padding: 14px;
    border: 2px dashed var(--border-color);
    border-radius: var(--radius-md);
    background: var(--bg-secondary);
    cursor: pointer;
    transition: var(--transition);
    font-size: 14px;
    color: var(--text-secondary);
}

.file-upload-label:hover {
    border-color: var(--primary-color);
    background: rgba(79, 70, 229, 0.05);
    color: var(--primary-color);
}

@media (max-width: 768px) {
    .file-upload-label {
        padding: 16px;
        min-height: 60px;
        font-size: 15px;
    }
}

/* 输入组优化 */
.input-group {
    display: flex;
    gap: 8px;
    align-items: center;
}

@media (max-width: 768px) {
    .input-group {
        flex-direction: column;
        gap: 10px;
    }
    
    .input-group .form-control {
        width: 100%;
    }
    
    .input-group .btn {
        width: 100%;
    }
}

/* Switch 开关样式 */
.form-switch {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 12px;
    background: var(--bg-secondary);
    border-radius: var(--radius-md);
    cursor: pointer;
}

.form-switch input[type="checkbox"] {
    position: relative;
    width: 50px;
    height: 28px;
    appearance: none;
    background: #d1d5db;
    border-radius: 14px;
    cursor: pointer;
    transition: var(--transition);
}

.form-switch input[type="checkbox"]:checked {
    background: var(--primary-color);
}

.form-switch input[type="checkbox"]::before {
    content: '';
    position: absolute;
    top: 2px;
    left: 2px;
    width: 24px;
    height: 24px;
    background: white;
    border-radius: 50%;
    transition: var(--transition);
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.2);
}

.form-switch input[type="checkbox"]:checked::before {
    left: 24px;
}

.form-switch-label {
    flex: 1;
    font-size: 14px;
    color: var(--text-primary);
}

@media (max-width: 768px) {
    .form-switch {
        padding: 14px;
    }
    
    .form-switch input[type="checkbox"] {
        width: 54px;
        height: 30px;
    }
    
    .form-switch input[type="checkbox"]::before {
        width: 26px;
        height: 26px;
    }
    
    .form-switch input[type="checkbox"]:checked::before {
        left: 26px;
    }
}