/* ========== 交互组件样式 ========== */
/* 整合: modal-components.css + footer-modern.css + 导航相关样式 */

/* ========== 导航栏样式 ========== */
.navbar {
    background: white;
    border-bottom: 1px solid var(--border-color);
    position: sticky;
    top: 0;
    z-index: 100;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.08);
}

.nav-container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 1rem 0;
}

.nav-logo {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.nav-logo a {
    display: flex;
    align-items: center;
    gap: 1rem;
    text-decoration: none;
    color: var(--text-primary);
}

.logo-img {
    height: 50px;
    width: auto;
    object-fit: contain;
}

.logo-content {
    display: flex;
    flex-direction: column;
}

.logo-tagline {
    font-size: var(--font-size-xs);
    color: var(--text-muted);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.nav-menu {
    display: flex;
    list-style: none;
    margin: 0;
    padding: 0;
    gap: 2rem;
    align-items: center;
}

.nav-item {
    position: relative;
}

.nav-link {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.5rem 1rem;
    color: #333333 !important;
    text-decoration: none;
    font-weight: 500;
    transition: color 0.3s ease;
    border-radius: 6px;
}

.nav-link:hover,
.nav-link.active {
    color: #d32f2f !important;
    background: rgba(197, 55, 55, 0.1);
}

/* 多语言切换按钮 */
.language-switcher {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.5rem 1rem;
    border: 1px solid var(--border-color);
    border-radius: 6px;
    background: white;
    cursor: pointer;
    transition: all 0.3s ease;
}

.language-switcher:hover {
    border-color: var(--primary-color);
    background: rgba(197, 55, 55, 0.05);
}

.language-switcher i {
    font-size: var(--font-size-sm);
    color: var(--text-secondary);
}

.current-lang {
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-medium);
    color: var(--text-primary);
}

/* 下拉菜单样式 */
.has-mega-dropdown {
    position: relative;
}

.mega-dropdown-menu {
    position: absolute;
    top: 100%;
    left: 0;
    background: white;
    border: 1px solid var(--border-color);
    border-radius: 8px;
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.1);
    min-width: 600px;
    opacity: 0;
    visibility: hidden;
    transform: translateY(-10px);
    transition: all 0.3s ease;
    z-index: 1000;
    padding: 2rem;
}

.has-mega-dropdown:hover .mega-dropdown-menu {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
}

.mega-dropdown-content {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 2rem;
}

.product-category {
    display: flex;
    flex-direction: column;
}

.category-title {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-weight: var(--font-weight-semibold);
    color: var(--primary-color);
    margin-bottom: 1rem;
    font-size: var(--font-size-sm);
}

.category-products {
    list-style: none;
    margin: 0;
    padding: 0;
}

.category-products li {
    margin-bottom: 0.5rem;
}

.category-products a {
    color: var(--text-secondary);
    text-decoration: none;
    font-size: var(--font-size-sm);
    transition: color 0.3s ease;
}

.category-products a:hover {
    color: var(--primary-color);
}

/* 模态框系统已移至 modal-components.css 避免重复 */

/* ========== 步骤指示器 ========== */
.step-indicator {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 2rem;
    margin: 2rem 0;
    padding: 1.5rem;
    background: var(--bg-light);
    border-radius: 12px;
}

.step {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.5rem;
    position: relative;
}

.step:not(:last-child)::after {
    content: '';
    position: absolute;
    top: 20px;
    left: 100%;
    width: 2rem;
    height: 2px;
    background: var(--border-color);
}

.step.active:not(:last-child)::after {
    background: var(--primary-color);
}

.step-number {
    width: 40px;
    height: 40px;
    border-radius: 50%;
    background: var(--border-color);
    color: var(--text-muted);
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: var(--font-weight-bold);
    transition: all 0.3s ease;
}

.step.active .step-number {
    background: var(--primary-color);
    color: white;
}

.step-label {
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-medium);
    color: var(--text-secondary);
}

.step.active .step-label {
    color: var(--primary-color);
}

/* ========== 表单样式 ========== */
.form-step {
    display: none;
}

.form-step.active {
    display: block;
}

.form-group {
    margin-bottom: 1.5rem;
}

.form-group label {
    display: block;
    margin-bottom: 0.5rem;
    font-weight: var(--font-weight-semibold);
    color: var(--text-primary);
}

.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;
    padding: 12px 16px;
    border: 2px solid var(--border-color);
    border-radius: 8px;
    font-size: var(--font-size-base);
    transition: border-color 0.3s ease;
    font-family: inherit;
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(197, 55, 55, 0.1);
}

.form-group textarea {
    resize: vertical;
    min-height: 100px;
}

.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1rem;
}

.form-actions {
    display: flex;
    gap: 1rem;
    justify-content: flex-end;
    margin-top: 2rem;
    padding-top: 2rem;
    border-top: 1px solid var(--border-color);
}

/* ========== 产品信息预览 ========== */
.quote-product-info-enhanced {
    display: flex;
    gap: 1.5rem;
    padding: 1.5rem;
    background: var(--bg-light);
    border-radius: 12px;
    margin-bottom: 2rem;
}

.product-image-container {
    position: relative;
    flex-shrink: 0;
}

.quote-product-info-enhanced .product-image {
    width: 120px;
    height: 120px;
    border-radius: 8px;
    object-fit: cover;
    border: 2px solid var(--border-color);
}

.quote-product-info-enhanced .product-badge {
    position: absolute;
    top: -8px;
    right: -8px;
    padding: 4px 8px;
    border-radius: 4px;
    font-size: var(--font-size-xs);
    font-weight: var(--font-weight-medium);
    color: white;
}

.product-details {
    flex: 1;
}

.product-details h3 {
    margin: 0 0 0.5rem 0;
    font-size: var(--font-size-xl);
    font-weight: var(--font-weight-bold);
    color: var(--text-primary);
}

.product-english-name {
    font-size: var(--font-size-sm);
    color: var(--text-muted);
    font-style: italic;
    margin-bottom: 1rem;
}

.product-specs-grid {
    margin-bottom: 1rem;
}

.specs-container {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(150px, 1fr));
    gap: 0.5rem;
}

.spec-item {
    background: white;
    padding: 0.5rem;
    border-radius: 4px;
    font-size: var(--font-size-sm);
    border: 1px solid var(--border-color);
}

.product-applications {
    font-size: var(--font-size-sm);
    color: var(--text-secondary);
}

/* ========== 需求摘要 ========== */
.quote-requirements {
    background: white;
    border: 1px solid var(--border-color);
    border-radius: 12px;
    padding: 1.5rem;
}

.quote-requirements h3 {
    margin: 0 0 1.5rem 0;
    font-size: var(--font-size-xl);
    color: var(--primary-color);
}

.requirements-summary {
    background: var(--bg-light);
    border-radius: 8px;
    padding: 1.5rem;
    margin-bottom: 2rem;
}

.summary-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0.5rem 0;
    border-bottom: 1px solid var(--border-color);
}

.summary-item:last-child {
    border-bottom: none;
}

.summary-label {
    font-weight: var(--font-weight-medium);
    color: var(--text-secondary);
}

.summary-value {
    font-weight: var(--font-weight-semibold);
    color: var(--text-primary);
}

/* ========== 成功消息 ========== */
.success-message {
    text-align: center;
    padding: 3rem 2rem;
}

.success-icon {
    font-size: 4rem;
    margin-bottom: 1rem;
}

.success-message h3 {
    color: var(--primary-color);
    margin-bottom: 1rem;
}

.success-message p {
    color: var(--text-secondary);
    margin-bottom: 2rem;
    line-height: var(--line-height-relaxed);
}

/* ========== 动画效果 ========== */
@keyframes fadeIn {
    from {
        opacity: 0;
    }
    to {
        opacity: 1;
    }
}

@keyframes slideUp {
    from {
        transform: translateY(30px);
        opacity: 0;
    }
    to {
        transform: translateY(0);
        opacity: 1;
    }
}

/* ========== Footer样式 ========== */
footer {
    background: var(--text-primary);
    color: white;
    padding: 3rem 0 2rem 0;
    margin-top: 4rem;
}

.footer-content {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
    margin-bottom: 2rem;
}

.footer-section h3 {
    color: white;
    margin-bottom: 1rem;
    font-size: var(--font-size-lg);
}

.footer-section p,
.footer-section a {
    color: rgba(255, 255, 255, 0.8);
    text-decoration: none;
    line-height: var(--line-height-relaxed);
}

.footer-section a:hover {
    color: white;
}

.footer-section ul {
    list-style: none;
    margin: 0;
    padding: 0;
}

.footer-section li {
    margin-bottom: 0.5rem;
}

.footer-bottom {
    border-top: 1px solid rgba(255, 255, 255, 0.2);
    padding-top: 2rem;
    text-align: center;
    color: rgba(255, 255, 255, 0.6);
}

/* ========== 移动端响应式 ========== */
@media (max-width: 768px) {
    .nav-container {
        flex-direction: column;
        gap: 1rem;
    }

    .nav-menu {
        gap: 1rem;
    }

    .mega-dropdown-menu {
        min-width: 300px;
        left: -100px;
    }

    .mega-dropdown-content {
        grid-template-columns: repeat(2, 1fr);
        gap: 1rem;
    }

    .modal-content {
        width: 95%;
    }

    .modal-header {
        padding: 20px 20px 16px;
    }

    .modal-body {
        padding: 1.5rem;
    }

    .step-indicator {
        flex-direction: column;
        gap: 1rem;
    }

    .step:not(:last-child)::after {
        display: none;
    }

    .form-row {
        grid-template-columns: 1fr;
    }

    .form-actions {
        justify-content: center;
        flex-direction: column;
    }

    .quote-product-info-enhanced {
        flex-direction: column;
        text-align: center;
    }

    .product-image-container {
        align-self: center;
    }

    .specs-container {
        grid-template-columns: 1fr;
    }

    .footer-content {
        grid-template-columns: 1fr;
        text-align: center;
    }
}