/* Modern Contact Form Styles */
/* 与现有网站的设计风格保持一致，使用相同的主题色和字体 */

.modern-contact-form-section {
    background: transparent;
    overflow: hidden;
    transition: all 0.3s ease;
}

.modern-contact-form-container {
    padding: 20px 40px;
    max-width: 100%;
}

/* 表单标题区域 */
.form-header {
    text-align: center;
    margin-bottom: 32px;
}

.form-title {
    font-family: PlusJakartaSans-SemiBold, '微软雅黑', sans-serif;
    font-size: 28px;
    color: #1d2939;
    margin: 0 0 12px 0;
    font-weight: 600;
    line-height: 1.2;
}

.form-subtitle {
    font-family: PlusJakartaSans-Medium, '微软雅黑', sans-serif;
    font-size: 16px;
    color: #667085;
    margin: 0;
    line-height: 1.5;
}

/* 表单网格布局 */
.form-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 20px;
    margin-bottom: 24px;
}

.form-group {
    display: flex;
    flex-direction: column;
}

.form-group-full {
    grid-column: span 2;
}

/* 标签样式 */
.form-label {
    font-family: PlusJakartaSans-SemiBold, '微软雅黑', sans-serif;
    font-size: 14px;
    font-weight: 500;
    color: #344054;
    margin-bottom: 8px;
    display: flex;
    align-items: center;
    gap: 4px;
}

.required {
    color: #FE4C66;
    font-weight: 600;
}

/* 输入框样式 */
.form-input,
.form-textarea {
    width: 100%;
    padding: 12px 16px;
    border: none;
    border-bottom: 2px solid #E4E7EC;
    border-radius: 0;
    font-family: PlusJakartaSans-Medium, '微软雅黑', sans-serif;
    font-size: 16px;
    color: #1d2939;
    background: transparent;
    transition: all 0.2s ease;
    box-sizing: border-box;
}

.form-input:focus,
.form-textarea:focus {
    outline: none;
    border-bottom-color: #98A2B3;
    box-shadow: none;
    border: none;
    border-bottom: 2px solid #98A2B3;
}

.form-input::placeholder,
.form-textarea::placeholder {
    color: #98A2B3;
    font-size: 1vw;
    font-family: PlusJakartaSans-Medium, '微软雅黑', sans-serif;
}

/* 移动端 placeholder 字体调整 */
@media (max-width: 750px) {
    .form-input::placeholder,
    .form-textarea::placeholder {
        font-size: max(calc(1vw * 3), 14px);
    }
}

.form-textarea {
    resize: vertical;
    min-height: 120px;
    font-family: PlusJakartaSans-Medium, '微软雅黑', sans-serif;
    line-height: 1.5;
}

/* 错误状态 */
.form-input.error,
.form-textarea.error {
    border-bottom-color: #F04438;
    box-shadow: none;
    border: none;
    border-bottom: 2px solid #F04438;
}

.form-error {
    color: #F04438;
    font-size: 13px;
    margin-top: 6px;
    min-height: 18px;
    font-family: PlusJakartaSans-Medium, '微软雅黑', sans-serif;
    display: flex;
    align-items: center;
    gap: 4px;
}

.form-error:empty {
    margin-top: 0;
    min-height: 0;
}

/* 提交按钮区域 */
.form-actions {
    display: flex;
    justify-content: center;
    margin-bottom: 16px;
}

.form-submit-btn {
    background: linear-gradient(135deg, #FE4C66 0%, #E03E5A 100%);
    color: white;
    border: none;
    padding: 14px 32px;
    border-radius: 12px;
    font-family: PlusJakartaSans-SemiBold, '微软雅黑', sans-serif;
    font-size: 16px;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s ease;
    min-width: 160px;
    position: relative;
    overflow: hidden;
    box-shadow: 0 4px 12px rgba(254, 76, 102, 0.3);
}

.form-submit-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 20px rgba(254, 76, 102, 0.4);
    background: linear-gradient(135deg, #E03E5A 0%, #C73650 100%);
}

.form-submit-btn:active {
    transform: translateY(0);
    box-shadow: 0 4px 12px rgba(254, 76, 102, 0.3);
}

.form-submit-btn:disabled {
    opacity: 0.7;
    cursor: not-allowed;
    transform: none;
    box-shadow: 0 4px 12px rgba(254, 76, 102, 0.2);
}

/* 加载状态 */
.btn-loading {
    display: flex;
    align-items: center;
    gap: 8px;
}

.spinner {
    width: 16px;
    height: 16px;
    animation: spin 1s linear infinite;
}

@keyframes spin {
    from { transform: rotate(0deg); }
    to { transform: rotate(360deg); }
}

/* 消息提示 */
.form-message {
    padding: 16px;
    border-radius: 12px;
    margin-top: 16px;
    font-family: PlusJakartaSans-Medium, '微软雅黑', sans-serif;
    font-size: 14px;
    text-align: center;
    animation: slideDown 0.3s ease;
}

.form-message.success {
    background: #ECFDF3;
    color: #027A48;
    border: 1px solid #ABEFC6;
}

.form-message.error {
    background: #FEF3F2;
    color: #B42318;
    border: 1px solid #FECDCA;
}

@keyframes slideDown {
    from {
        opacity: 0;
        transform: translateY(-10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* 响应式设计 */
@media (max-width: 768px) {
    .modern-contact-form-container {
        padding: 16px 20px;
    }
    
    .form-grid {
        grid-template-columns: 1fr;
        gap: 16px;
    }
    
    .form-group-full {
        grid-column: span 1;
    }
    
    .form-title {
        font-size: 24px;
    }
    
    .form-subtitle {
        font-size: 15px;
    }
    
    .form-input,
    .form-textarea {
        font-size: 16px; /* 防止iOS缩放 */
    }
    
    .form-submit-btn {
        width: 100%;
        padding: 16px 32px;
    }
}

@media (max-width: 480px) {
    .modern-contact-form-container {
        padding: 20px 16px;
    }
    
    .form-grid {
        gap: 16px;
    }
    
    .form-title {
        font-size: 22px;
    }
}

/* 焦点可访问性 */
.form-input:focus-visible,
.form-textarea:focus-visible,
.form-submit-btn:focus-visible {
    outline: 2px solid #FE4C66;
    outline-offset: 2px;
}

/* 深色模式支持（可选） */
@media (prefers-color-scheme: dark) {
    .modern-contact-form-section {
        background: #1a1a1a;
        color: #fff;
    }
    
    .form-title {
        color: #fff;
    }
    
    .form-subtitle {
        color: #b3b3b3;
    }
    
    .form-label {
        color: #e6e6e6;
    }
    
    .form-input,
    .form-textarea {
        background: #2a2a2a;
        border-color: #404040;
        color: #fff;
    }
    
    .form-input::placeholder,
    .form-textarea::placeholder {
        color: #888;
    }
}