/* Footer Styles for AliExpress Dropshipping Website */

/* ========================================
   Footer Layout and Base Styles
======================================== */
footer {
    background-color: var(--gray-900);
    color: var(--white);
    margin-top: auto;
}

.footer-content {
    position: relative;
}

/* ========================================
   Footer Top Section
======================================== */
.footer-top {
    padding: var(--spacing-24) 0 var(--spacing-16);
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.footer-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: var(--spacing-12);
    max-width: 1200px;
    margin: 0 auto;
}

.footer-section h3.footer-title {
    font-size: var(--font-size-lg);
    font-weight: var(--font-weight-semibold);
    margin-bottom: var(--spacing-6);
    color: var(--white);
    position: relative;
}

.footer-section h3.footer-title::after {
    content: '';
    position: absolute;
    bottom: -8px;
    left: 0;
    width: 40px;
    height: 2px;
    background: linear-gradient(90deg, var(--primary-color), var(--accent-color));
}

/* Footer Logo Section */
.footer-logo {
    display: flex;
    align-items: center;
    margin-bottom: var(--spacing-6);
}

.footer-logo-img {
    height: 40px;
    filter: brightness(0) invert(1);
}

.footer-desc {
    line-height: var(--line-height-relaxed);
    margin-bottom: var(--spacing-8);
    color: rgba(255, 255, 255, 0.8);
    font-size: var(--font-size-sm);
}

/* Social Links */
.social-links {
    display: flex;
    gap: var(--spacing-4);
}

.social-links a {
    width: 44px;
    height: 44px;
    background-color: rgba(255, 255, 255, 0.1);
    border-radius: var(--radius-full);
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--white);
    text-decoration: none;
    transition: all var(--transition-base);
    border: 1px solid transparent;
}

.social-links a:hover {
    background-color: var(--primary-color);
    transform: translateY(-3px);
    box-shadow: var(--shadow-lg);
    border-color: var(--primary-color);
}

.social-links a i {
    font-size: var(--font-size-lg);
}

/* Footer Links */
.footer-links {
    list-style: none;
}

.footer-links li {
    margin-bottom: var(--spacing-3);
}

.footer-links a {
    color: rgba(255, 255, 255, 0.7);
    text-decoration: none;
    font-size: var(--font-size-sm);
    transition: all var(--transition-base);
    position: relative;
}

.footer-links a:hover {
    color: var(--primary-color);
    padding-left: var(--spacing-2);
}

.footer-links a::before {
    content: '';
    position: absolute;
    left: -8px;
    top: 50%;
    transform: translateY(-50%);
    width: 0;
    height: 1px;
    background-color: var(--primary-color);
    transition: width var(--transition-base);
}

.footer-links a:hover::before {
    width: 4px;
}

/* Newsletter Section */
.newsletter-desc {
    font-size: var(--font-size-sm);
    color: rgba(255, 255, 255, 0.8);
    line-height: var(--line-height-relaxed);
    margin-bottom: var(--spacing-6);
}

.newsletter-form {
    position: relative;
}

.input-group {
    display: flex;
    border-radius: var(--radius-lg);
    overflow: hidden;
    background-color: var(--white);
    box-shadow: var(--shadow-base);
}

.newsletter-form input[type="email"] {
    flex: 1;
    padding: var(--spacing-4);
    border: none;
    background-color: transparent;
    font-size: var(--font-size-sm);
    color: var(--gray-800);
    outline: none;
}

.newsletter-form input[type="email"]::placeholder {
    color: var(--gray-500);
}

.newsletter-btn {
    background: linear-gradient(135deg, var(--primary-color), var(--accent-color));
    color: var(--white);
    border: none;
    padding: var(--spacing-4) var(--spacing-6);
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-medium);
    cursor: pointer;
    transition: all var(--transition-base);
    white-space: nowrap;
}

.newsletter-btn:hover {
    background: linear-gradient(135deg, var(--primary-dark), #e67e22);
    transform: translateX(-2px);
}

.newsletter-btn:disabled {
    opacity: 0.6;
    cursor: not-allowed;
    transform: none;
}

.newsletter-privacy {
    margin-top: var(--spacing-4);
}

.newsletter-privacy small {
    font-size: var(--font-size-xs);
    color: rgba(255, 255, 255, 0.6);
    line-height: var(--line-height-normal);
}

/* Newsletter Message */
.newsletter-message {
    margin-top: var(--spacing-4);
    padding: var(--spacing-3) var(--spacing-4);
    border-radius: var(--radius-md);
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-medium);
}

.newsletter-message.success {
    background-color: rgba(39, 174, 96, 0.2);
    color: #2ecc71;
    border: 1px solid rgba(39, 174, 96, 0.3);
}

.newsletter-message.error {
    background-color: rgba(231, 76, 60, 0.2);
    color: #e74c3c;
    border: 1px solid rgba(231, 76, 60, 0.3);
}

.newsletter-message.info {
    background-color: rgba(52, 152, 219, 0.2);
    color: #3498db;
    border: 1px solid rgba(52, 152, 219, 0.3);
}

/* ========================================
   Footer Middle Section
======================================== */
.footer-middle {
    padding: var(--spacing-16) 0;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
    background-color: rgba(0, 0, 0, 0.2);
}

.footer-features {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: var(--spacing-8);
    margin-bottom: var(--spacing-12);
    max-width: 1200px;
    margin-left: auto;
    margin-right: auto;
}

.feature-item {
    display: flex;
    align-items: center;
    gap: var(--spacing-4);
    padding: var(--spacing-4);
    background-color: rgba(255, 255, 255, 0.05);
    border-radius: var(--radius-lg);
    transition: all var(--transition-base);
    border: 1px solid transparent;
}

.feature-item:hover {
    background-color: rgba(255, 255, 255, 0.1);
    border-color: rgba(255, 107, 53, 0.3);
    transform: translateY(-2px);
}

.feature-item i {
    font-size: var(--font-size-2xl);
    color: var(--primary-color);
    flex-shrink: 0;
}

.feature-text h4 {
    font-size: var(--font-size-base);
    font-weight: var(--font-weight-semibold);
    margin-bottom: var(--spacing-1);
    color: var(--white);
}

.feature-text p {
    font-size: var(--font-size-sm);
    color: rgba(255, 255, 255, 0.7);
    line-height: var(--line-height-normal);
}

/* App Download Section */
.app-download {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: var(--spacing-8);
    max-width: 1200px;
    margin: 0 auto;
    padding: var(--spacing-6);
    background: linear-gradient(135deg, rgba(255, 107, 53, 0.1), rgba(243, 156, 18, 0.1));
    border-radius: var(--radius-xl);
    border: 1px solid rgba(255, 107, 53, 0.2);
}

.app-info h4 {
    font-size: var(--font-size-xl);
    font-weight: var(--font-weight-semibold);
    margin-bottom: var(--spacing-2);
    color: var(--white);
}

.app-info p {
    font-size: var(--font-size-sm);
    color: rgba(255, 255, 255, 0.8);
    line-height: var(--line-height-relaxed);
}

.app-buttons {
    display: flex;
    gap: var(--spacing-4);
    flex-shrink: 0;
}

.app-btn-wrapper {
    position: relative;
    display: inline-block;
}

.app-btn {
    display: block;
    transition: all var(--transition-base);
    border-radius: var(--radius-md);
    overflow: hidden;
}

.app-btn:hover {
    transform: translateY(-3px);
    box-shadow: var(--shadow-lg);
}

.app-btn img {
    height: 75px;
    width: auto;
    display: block;
}

/* QR Code Tooltip Styles */
.qr-tooltip {
    position: absolute;
    bottom: calc(100% + 15px);
    left: 50%;
    transform: translateX(-50%);
    background: var(--white);
    padding: var(--spacing-4);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-xl);
    opacity: 0;
    visibility: hidden;
    transition: all var(--transition-base);
    z-index: 1000;
    text-align: center;
    min-width: 180px;
}

.qr-tooltip::after {
    content: '';
    position: absolute;
    top: 100%;
    left: 50%;
    transform: translateX(-50%);
    border: 8px solid transparent;
    border-top-color: var(--white);
}

.app-btn-wrapper:hover .qr-tooltip {
    opacity: 1;
    visibility: visible;
    transform: translateX(-50%) translateY(-5px);
}

.qr-image {
    width: 120px;
    height: 120px;
    display: block;
    margin: 0 auto var(--spacing-2);
    border-radius: var(--radius-md);
}

.qr-text {
    font-size: var(--font-size-sm);
    color: var(--gray-700);
    font-weight: var(--font-weight-medium);
    display: block;
}

/* ========================================
   Footer Bottom Section
======================================== */
.footer-bottom {
    padding: var(--spacing-8) 0;
    background-color: rgba(0, 0, 0, 0.3);
}

.footer-bottom-content {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: var(--spacing-8);
    max-width: 1200px;
    margin: 0 auto;
    flex-wrap: wrap;
}

.footer-left {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-4);
}

.copyright {
    font-size: var(--font-size-sm);
    color: rgba(255, 255, 255, 0.6);
    margin: 0;
}

.footer-links-inline {
    display: flex;
    gap: var(--spacing-6);
    flex-wrap: wrap;
}

.footer-links-inline a {
    font-size: var(--font-size-sm);
    color: rgba(255, 255, 255, 0.7);
    text-decoration: none;
    transition: color var(--transition-base);
}

.footer-links-inline a:hover {
    color: var(--primary-color);
}

.footer-right {
    display: flex;
    align-items: center;
    gap: var(--spacing-4);
}

.payment-methods {
    display: flex;
    align-items: center;
    gap: var(--spacing-3);
    flex-wrap: wrap;
}

.payment-methods span {
    font-size: var(--font-size-sm);
    color: rgba(255, 255, 255, 0.7);
    white-space: nowrap;
}

.payment-methods img {
    height: 240px;
    width: 661px;
    background-color: rgba(0, 0, 0, 0.3);
    padding: var(--spacing-2);
    border-radius: var(--radius-sm);
    opacity: 0.9;
    transition: opacity var(--transition-base);
}

.payment-methods img:hover {
    opacity: 1;
}

/* 支付方式响应式设计 */
/* 大屏幕（桌面） */
@media (min-width: 1200px) {
    .payment-methods img {
        height: 240px;
        width: 661px;
    }
}

/* 中等屏幕（小桌面/大平板） */
@media (max-width: 1199px) and (min-width: 992px) {
    .payment-methods img {
        height: 200px;
        width: 550px;
    }
}

/* 平板设备 */
@media (max-width: 991px) and (min-width: 769px) {
    .payment-methods img {
        height: 160px;
        width: 450px;
    }
}

/* 小平板和大手机 */
@media (max-width: 768px) and (min-width: 481px) {
    .payment-methods img {
        height: 120px;
        width: 320px;
    }
}

/* 手机设备 */
@media (max-width: 480px) {
    .payment-methods img {
        height: 80px;
        width: 240px;
        padding: var(--spacing-1);
    }
}

/* 平板设备APP下载优化 */
@media (max-width: 991px) and (min-width: 769px) {
    .app-download {
        flex-direction: row;
        text-align: left;
        gap: var(--spacing-6);
        align-items: center;
        padding: var(--spacing-5);
        background: rgba(255, 255, 255, 0.03);
        border-radius: var(--radius-lg);
    }
    
    .app-info {
        flex: 1;
        max-width: 300px;
    }
    
    .app-buttons {
        display: flex;
        flex-direction: row;
        gap: var(--spacing-3);
        flex-wrap: wrap;
        justify-content: center;
        max-width: 400px;
    }
    
    .app-btn-wrapper, .merchant-app-wrapper {
        flex: 1;
        min-width: 120px;
        order: initial; /* 重置排序 */
    }
    
    .app-btn img {
        height: 60px;
    }
    
    .merchant-app-btn {
        min-height: 50px;
    }
}

/* ========================================
   Footer Responsive Design
======================================== */
@media (max-width: 768px) {
    .footer-top {
        padding: var(--spacing-16) 0 var(--spacing-12);
    }

    .footer-grid {
        grid-template-columns: 1fr;
        gap: var(--spacing-10);
    }

    .footer-section:first-child {
        text-align: center;
    }

    .footer-section h3.footer-title::after {
        left: 50%;
        transform: translateX(-50%);
    }

    .footer-section:first-child .footer-section h3.footer-title::after {
        left: 50%;
        transform: translateX(-50%);
    }

    .social-links {
        justify-content: center;
    }

    .footer-middle {
        padding: var(--spacing-12) 0;
    }

    .footer-features {
        grid-template-columns: 1fr;
        gap: var(--spacing-6);
    }

    /* 移动端APP下载优化 */
    .app-download {
        flex-direction: column;
        text-align: center;
        gap: var(--spacing-4);
        padding: var(--spacing-6);
        background: rgba(255, 255, 255, 0.05);
        border-radius: var(--radius-lg);
        margin: var(--spacing-4) 0;
    }
    
    .app-info h4 {
        font-size: 1.5rem;
        margin-bottom: var(--spacing-3);
        color: var(--white);
    }
    
    .app-info p {
        font-size: 0.9rem;
        color: rgba(255, 255, 255, 0.8);
        margin-bottom: var(--spacing-4);
    }

    .app-buttons {
        display: grid;
        grid-template-columns: 1fr;
        gap: var(--spacing-4);
        width: 100%;
        max-width: 300px;
        margin: 0 auto;
    }
    
    .app-btn-wrapper {
        order: 1; /* iOS App Store 第一 */
    }
    
    .app-btn-wrapper:nth-child(2) {
        order: 3; /* Google Play 第三 */
    }
    
    .merchant-app-wrapper {
        order: 2; /* 商家端 第二 */
    }

    .app-btn {
        width: 100%;
        max-width: none;
        padding: var(--spacing-3);
        border-radius: var(--radius-md);
        background: rgba(255, 255, 255, 0.1);
        border: 1px solid rgba(255, 255, 255, 0.2);
        transition: all 0.3s ease;
    }
    
    .app-btn:hover {
        background: rgba(255, 255, 255, 0.15);
        transform: translateY(-2px);
    }
    
    .app-btn img {
        height: 50px;
        width: auto;
        max-width: 180px;
    }
    
    .merchant-app-btn {
        width: 100%;
        max-width: none;
        padding: var(--spacing-3);
        min-height: 60px;
        justify-content: center;
    }
    
    .merchant-app-btn img {
        height: 40px;
        width: auto;
    }
    
    .merchant-app-btn .app-label {
        font-size: 14px;
    }
    
    /* 隐藏QR码提示在移动端 */
    .qr-tooltip {
        display: none;
    }

    .footer-bottom-content {
        flex-direction: column;
        text-align: center;
        gap: var(--spacing-6);
    }

    .footer-links-inline {
        justify-content: center;
    }

    .payment-methods {
        justify-content: center;
        overflow-x: auto;
        padding: 0 var(--spacing-2);
    }
    
    .payment-methods img {
        max-width: 100%;
        height: auto;
        min-height: 60px;
    }

    .input-group {
        flex-direction: column;
    }

    .newsletter-btn {
        border-radius: 0 0 var(--radius-lg) var(--radius-lg);
    }
}

@media (max-width: 480px) {
    .footer-top {
        padding: var(--spacing-12) 0 var(--spacing-10);
    }

    .footer-features {
        gap: var(--spacing-4);
    }

    .feature-item {
        flex-direction: column;
        text-align: center;
        padding: var(--spacing-6);
    }

    .feature-item i {
        margin-bottom: var(--spacing-2);
    }

    /* 超小屏幕APP下载进一步优化 */
    .app-download {
        padding: var(--spacing-4);
        margin: var(--spacing-2) 0;
    }
    
    .app-info h4 {
        font-size: 1.3rem;
    }
    
    .app-info p {
        font-size: 0.85rem;
    }
    
    .app-buttons {
        gap: var(--spacing-3);
        max-width: 280px;
    }
    
    .app-btn {
        padding: var(--spacing-2);
        border-radius: var(--radius-sm);
    }
    
    .app-btn img {
        height: 45px;
        max-width: 160px;
    }
    
    .merchant-app-btn {
        padding: var(--spacing-2);
        min-height: 55px;
    }
    
    .merchant-app-btn img {
        height: 35px;
    }
    
    .merchant-app-btn .app-label {
        font-size: 13px;
    }

    .footer-links-inline {
        flex-direction: column;
        gap: var(--spacing-3);
    }

    .payment-methods {
        flex-direction: column;
        gap: var(--spacing-4);
        text-align: center;
    }

    .payment-methods > span {
        margin-bottom: var(--spacing-2);
    }
    
    .payment-methods img {
        max-width: 90vw;
        width: auto;
        height: auto;
        max-height: 150px;
    }
}

/* ========================================
   Dark Mode Adjustments
======================================== */
@media (prefers-color-scheme: dark) {
    footer {
        background-color: #0a0a0a;
    }

    .footer-middle {
        background-color: rgba(255, 255, 255, 0.02);
    }

    .footer-bottom {
        background-color: rgba(255, 255, 255, 0.05);
    }

    .feature-item {
        background-color: rgba(255, 255, 255, 0.03);
    }

    .feature-item:hover {
        background-color: rgba(255, 255, 255, 0.08);
    }

    .app-download {
        background: linear-gradient(135deg, rgba(255, 107, 53, 0.05), rgba(243, 156, 18, 0.05));
        border-color: rgba(255, 107, 53, 0.1);
    }
}

/* ========================================
   High Contrast Mode
======================================== */
@media (prefers-contrast: high) {
    .footer-links a,
    .footer-links-inline a {
        color: var(--white);
    }

    .footer-links a:hover,
    .footer-links-inline a:hover {
        color: #ffff00;
        background-color: rgba(255, 255, 0, 0.1);
        padding: var(--spacing-1) var(--spacing-2);
        border-radius: var(--radius-sm);
    }

    .social-links a {
        border: 2px solid var(--white);
    }

    .social-links a:hover {
        border-color: #ffff00;
        background-color: #ffff00;
        color: var(--black);
    }

    .feature-item {
        border: 1px solid rgba(255, 255, 255, 0.3);
    }

    .newsletter-btn {
        border: 2px solid var(--primary-color);
    }
}

/* ========================================
   Print Styles
======================================== */
@media print {
    footer {
        background-color: transparent !important;
        color: var(--black) !important;
        page-break-inside: avoid;
    }

    .footer-middle,
    .footer-bottom,
    .social-links,
    .newsletter-form,
    .app-download {
        display: none !important;
    }

    .footer-links a {
        color: var(--black) !important;
        text-decoration: underline !important;
    }

    .footer-desc,
    .newsletter-desc {
        color: var(--black) !important;
    }

    .footer-section h3.footer-title {
        color: var(--black) !important;
        border-bottom: 1px solid var(--black);
        padding-bottom: 5pt;
    }

    .footer-section h3.footer-title::after {
        display: none;
    }
}

/* Merchant App Styles */
.merchant-app-wrapper {
    position: relative;
}

.merchant-app-btn {
    background: linear-gradient(135deg, #FF6B35 0%, #F7931E 100%);
    border: 2px solid #E65100;
    border-radius: 8px;
    padding: 8px 12px;
    cursor: pointer;
    transition: all 0.3s ease;
    display: flex;
    align-items: center;
    gap: 8px;
    min-height: 44px;
}

.merchant-app-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 15px rgba(255, 107, 53, 0.3);
}

.merchant-app-btn .app-label {
    color: white;
    font-size: 16px;
    font-weight: bold;
}

/* 商家端APP按钮图片样式 */
.merchant-app-btn img {
    width: 70px;
    height: auto;
    max-width: none;
    border-radius: 4px;
}

/* Merchant Modal Styles */
.merchant-modal {
    display: none;
    position: fixed;
    z-index: 10000;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0, 0, 0, 0.5);
    justify-content: center;
    align-items: center;
    animation: fadeIn 0.3s ease;
}

.modal-content {
    background-color: white;
    border-radius: 12px;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.3);
    max-width: 500px;
    width: 90%;
    max-height: 90vh;
    overflow-y: auto;
    animation: slideIn 0.3s ease;
}

.modal-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 20px 24px;
    border-bottom: 1px solid #eee;
    background: linear-gradient(135deg, #FF6B35 0%, #F7931E 100%);
    color: white;
    border-radius: 12px 12px 0 0;
}

.modal-header h3 {
    margin: 0;
    font-size: 18px;
    font-weight: bold;
}

.modal-close {
    font-size: 28px;
    font-weight: bold;
    cursor: pointer;
    color: white;
    opacity: 0.8;
    transition: opacity 0.3s ease;
}

.modal-close:hover {
    opacity: 1;
}

.modal-body {
    padding: 24px;
    text-align: center;
}

.modal-body p {
    margin-bottom: 20px;
    color: #666;
    font-size: 14px;
}

.modal-app-options {
    display: flex;
    gap: 20px;
    justify-content: center;
    flex-wrap: wrap;
}

.modal-app-option {
    flex: 1;
    min-width: 180px;
}

.modal-app-link {
    display: flex;
    flex-direction: column;
    align-items: center;
    text-decoration: none;
    padding: 20px;
    border: 2px solid #eee;
    border-radius: 12px;
    transition: all 0.3s ease;
    background: white;
}

.modal-app-link:hover {
    border-color: #FF6B35;
    box-shadow: 0 4px 15px rgba(255, 107, 53, 0.1);
    transform: translateY(-2px);
}

.modal-app-link img {
    width: 120px;
    height: auto;
    margin-bottom: 12px;
    border-radius: 8px;
}

.modal-app-link span {
    color: #333;
    font-weight: bold;
    font-size: 14px;
}

.modal-app-link:hover span {
    color: #FF6B35;
}

/* Animations */
@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

@keyframes slideIn {
    from { 
        opacity: 0;
        transform: translateY(-50px) scale(0.9);
    }
    to { 
        opacity: 1;
        transform: translateY(0) scale(1);
    }
}

/* Responsive */
@media (max-width: 768px) {
    .modal-content {
        width: 95%;
        margin: 20px;
    }
    
    .modal-app-options {
        flex-direction: column;
        gap: 15px;
    }
    
    .modal-app-option {
        min-width: auto;
    }
    
    .modal-app-link img {
        width: 100px;
    }
}