/**
 * 全局统一表单控件样式
 * 确保所有页面的输入框、下拉框、文本域等表单元素视觉一致
 */

/* ========== 基础表单组样式 ========== */
.form-group {
    margin-bottom: var(--spacing-lg);
}

.form-group label {
    display: block;
    font-size: var(--font-base);
    font-weight: 500;
    color: var(--text-primary);
    margin-bottom: var(--spacing-xs);
}

.form-group label .required {
    color: var(--error-color);
    margin-left: var(--spacing-xs);
}

/* ========== 统一表单控件样式 ========== */
.form-group input[type="text"],
.form-group input[type="number"],
.form-group input[type="email"],
.form-group input[type="tel"],
.form-group input[type="url"],
.form-group input[type="password"],
.form-group input[type="date"],
.form-group input[type="datetime-local"],
.form-group select,
.form-group textarea {
    width: 100%;
    min-height: 46px;
    height: auto;
    padding: var(--spacing-md) var(--spacing-lg);
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    font-size: var(--font-base);
    line-height: var(--leading-normal);
    color: var(--text-primary);
    background-color: var(--bg-light);
    transition: all var(--transition-base);
    font-family: inherit;
    box-sizing: border-box;
}

/* ========== Select特殊样式（移除默认箭头，添加自定义箭头） ========== */
.form-group select {
    -webkit-appearance: none;
    -moz-appearance: none;
    appearance: none;
    cursor: pointer;
    padding-right: 40px;
    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='%23666' d='M6 9L1 4h10z'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 16px center;
    background-size: 12px;
}

/* ========== 焦点状态统一样式 ========== */
.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--primary-color);
    background-color: var(--bg-white);
    box-shadow: 0 0 0 3px var(--primary-light);
}

/* Select焦点时箭头颜色变化 */
.form-group select:focus {
    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='%23b1ce48' d='M6 9L1 4h10z'/%3E%3C/svg%3E");
}

/* ========== Textarea特殊样式 ========== */
.form-group textarea {
    resize: vertical;
    min-height: 120px;
    line-height: var(--leading-relaxed);
}

/* ========== 表单提示文字 ========== */
.form-hint {
    font-size: var(--font-sm);
    color: var(--text-muted);
    margin-top: var(--spacing-xs);
    line-height: var(--leading-tight);
}

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

/* ========== 错误状态 ========== */
.form-group.has-error input,
.form-group.has-error select,
.form-group.has-error textarea {
    border-color: var(--error-color);
}

.form-group.has-error input:focus,
.form-group.has-error select:focus,
.form-group.has-error textarea:focus {
    box-shadow: 0 0 0 3px rgba(255, 107, 107, 0.1);
}

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

@media (max-width: 768px) {
    .form-row {
        grid-template-columns: 1fr;
        gap: var(--spacing-md);
    }
}

/* ========== 表单操作按钮区 ========== */
.form-actions {
    margin-top: var(--spacing-xl);
    padding-top: var(--spacing-lg);
    border-top: 1px solid var(--border-light);
    display: flex;
    gap: var(--spacing-sm);
    justify-content: flex-end;
}

/* ========== Placeholder样式 ========== */
.form-group input::placeholder,
.form-group textarea::placeholder {
    color: var(--text-disabled);
    opacity: 1;
}

.form-group input::-webkit-input-placeholder,
.form-group textarea::-webkit-input-placeholder {
    color: var(--text-disabled);
}

.form-group input::-moz-placeholder,
.form-group textarea::-moz-placeholder {
    color: var(--text-disabled);
    opacity: 1;
}

.form-group input:-ms-input-placeholder,
.form-group textarea:-ms-input-placeholder {
    color: var(--text-disabled);
}