/**
 * YDK Footer Component - 完全按照截图复刻
 * 独立组件，不与任何其他样式冲突
 */

/* 重置和基础样式 - 仅限footer */
.ydk-footer * {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

/* 主footer容器 */
.ydk-footer {
    background: #3a4a5c;
    color: #ffffff;
    padding: 40px 0 20px;
    margin-top: 50px;
    font-family: Arial, "Helvetica Neue", Helvetica, sans-serif;
}

.ydk-footer-container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 20px;
}

/* 主要内容区域 - 三栏布局 */
.ydk-footer-main {
    display: grid;
    grid-template-columns: 2fr 1.2fr 1fr;
    gap: 40px;
    margin-bottom: 30px;
    align-items: flex-start;
}

/* 第一栏：公司信息 */
.ydk-company-section h3 {
    font-size: 18px;
    font-weight: 600;
    color: #ffffff;
    margin-bottom: 15px;
    line-height: 1.4;
}

.ydk-company-tagline {
    font-size: 16px;
    color: #f39c12;
    margin-bottom: 15px;
    font-weight: 500;
    line-height: 1.4;
}

.ydk-company-description {
    font-size: 14px;
    color: #bdc3c7;
    line-height: 1.6;
    margin-bottom: 20px;
}

/* 第二栏：Newsletter订阅 */
.ydk-newsletter-section h4 {
    font-size: 16px;
    font-weight: 600;
    color: #ffffff;
    margin-bottom: 12px;
}

.ydk-newsletter-intro {
    font-size: 13px;
    color: #bdc3c7;
    line-height: 1.5;
    margin-bottom: 15px;
}

.ydk-newsletter-form {
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.ydk-email-input {
    padding: 12px 15px;
    border: 1px solid #52626f;
    border-radius: 5px;
    background: rgba(255, 255, 255, 0.1);
    color: #fff;
    font-size: 14px;
    font-family: inherit;
}

.ydk-email-input::placeholder {
    color: #95a5a6;
    font-size: 13px;
}

.ydk-email-input:focus {
    outline: 2px solid #d32f2f;
    background: rgba(255, 255, 255, 0.15);
    border-color: #d32f2f;
}

.ydk-subscribe-btn {
    padding: 12px 20px;
    background: #d32f2f;
    color: #ffffff;
    border: none;
    border-radius: 5px;
    font-size: 14px;
    font-weight: 500;
    cursor: pointer;
    transition: background 0.3s ease;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    font-family: inherit;
}

.ydk-subscribe-btn:hover {
    background: #b71c1c;
}

.ydk-subscribe-btn i {
    font-size: 14px;
}

.ydk-privacy-note {
    font-size: 12px;
    color: #95a5a6;
    font-style: italic;
    margin-top: 8px;
}

.ydk-form-message {
    padding: 10px;
    border-radius: 5px;
    font-size: 13px;
    margin-top: 10px;
    display: none;
}

.ydk-form-message.success {
    background: rgba(76, 175, 80, 0.2);
    color: #4caf50;
    border: 1px solid rgba(76, 175, 80, 0.4);
}

.ydk-form-message.error {
    background: rgba(244, 67, 54, 0.2);
    color: #f44336;
    border: 1px solid rgba(244, 67, 54, 0.4);
}

/* 第三栏：联系信息 */
.ydk-contact-section h4 {
    font-size: 16px;
    font-weight: 600;
    color: #ffffff;
    margin-bottom: 12px;
}

.ydk-contact-description {
    font-size: 13px;
    color: #bdc3c7;
    margin-bottom: 15px;
    line-height: 1.4;
}

.ydk-contact-info {
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.ydk-contact-item {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 14px;
    color: #ecf0f1;
}

.ydk-contact-icon {
    font-size: 16px;
    color: #d32f2f;
    width: 20px;
    text-align: center;
    flex-shrink: 0;
}

/* Footer底部 */
.ydk-footer-bottom {
    border-top: 1px solid rgba(255, 255, 255, 0.15);
    padding-top: 20px;
    text-align: center;
}

.ydk-footer-copyright {
    font-size: 13px;
    color: #bdc3c7;
    line-height: 1.6;
}

.ydk-copyright-main {
    margin-bottom: 8px;
}

.ydk-copyright-main a {
    color: #d32f2f;
    text-decoration: none;
}

.ydk-copyright-main a:hover {
    text-decoration: underline;
}

.ydk-copyright-slogan {
    font-size: 12px;
    color: #95a5a6;
    font-style: italic;
}

/* 响应式设计 */
@media (max-width: 768px) {
    .ydk-footer-main {
        grid-template-columns: 1fr;
        gap: 30px;
    }

    .ydk-footer {
        padding: 30px 0 15px;
    }
}

@media (max-width: 480px) {
    .ydk-footer-container {
        padding: 0 15px;
    }

    .ydk-footer-main {
        gap: 25px;
    }

    .ydk-email-input,
    .ydk-subscribe-btn {
        padding: 10px 12px;
        font-size: 13px;
    }
}