/* ===== 响应式设计 ===== */

@media (max-width: 1200px) {
    .container {
        max-width: 1140px;
    }
    
    .title-text {
        font-size: 3.5rem;
    }
    
    .device-grid {
        grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
    }
}

@media (max-width: 992px) {
    .container {
        max-width: 960px;
    }
    
    .title-text {
        font-size: 3rem;
    }
    
    .detail-header {
        flex-direction: column;
    }
    
    .detail-image {
        flex: none;
        height: 200px;
    }
    
    .specs-grid {
        grid-template-columns: repeat(auto-fill, minmax(250px, 1fr));
    }
}

@media (max-width: 768px) {
    .container {
        max-width: 720px;
        padding: 0 15px;
    }

    .header-content {
        flex-direction: column;
        gap: 1.5rem;
    }

    nav ul {
        flex-wrap: wrap;
        justify-content: center;
        gap: 1rem;
    }

    .hero {
        min-height: 70vh;
        padding: 2rem 0;
    }

    .title-text {
        font-size: 2.5rem;
    }

    .floating-cards {
        gap: 1rem;
    }

    .floating-card {
        min-width: 80px;
        padding: 1rem;
    }

    .floating-card i {
        font-size: 1.5rem;
    }

    .quick-access {
        grid-template-columns: 1fr;
    }

    .device-grid {
        grid-template-columns: 1fr;
    }

    .detail-header {
        flex-direction: column;
    }

    .detail-image {
        flex: none;
        height: 200px;
    }

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

    .gallery-grid {
        grid-template-columns: repeat(auto-fill, minmax(150px, 1fr));
    }

    .modal-content {
        width: 95%;
        margin: 5% auto;
    }

    /* DTB上传响应式 */
    .dtb-upload-section {
        grid-template-columns: 1fr;
        gap: 1.5rem;
    }

    .upload-card, .result-card {
        padding: 1.5rem;
    }

    .upload-area {
        padding: 1.5rem;
    }

    /* 下载页面响应式 */
    .download-title {
        font-size: 2.5rem;
    }

    .download-stats {
        gap: 1.5rem;
    }

    .stat-number {
        font-size: 2rem;
    }

    .floating-download-icons {
        gap: 1rem;
    }

    .floating-icon {
        font-size: 2rem;
    }

    .download-categories {
        gap: 0.5rem;
    }

    .category-btn {
        padding: 0.6rem 1rem;
        font-size: 0.8rem;
    }

    .download-header {
        flex-direction: column;
        gap: 1rem;
    }

    .download-btn {
        align-self: flex-start;
    }

    .download-meta {
        gap: 0.5rem;
    }

    .download-meta span {
        font-size: 0.8rem;
        padding: 0.2rem 0.5rem;
    }
}

@media (max-width: 576px) {
    .container {
        max-width: 540px;
        padding: 0 10px;
    }

    .title-text {
        font-size: 2rem;
    }

    .page-header h1 {
        font-size: 2rem;
    }

    .hero-description {
        font-size: 1.1rem;
    }

    .search-box input {
        padding: 1rem 1.5rem 1rem 3rem;
        font-size: 1rem;
    }

    .device-info {
        padding: 1.5rem;
    }

    .device-meta {
        flex-direction: column;
        gap: 0.5rem;
    }

    .detail-tabs {
        flex-wrap: wrap;
    }

    .detail-tab {
        padding: 0.6rem 1rem;
        font-size: 0.9rem;
    }

    /* DTB上传小屏幕优化 */
    .upload-header h3, .result-header h3 {
        font-size: 1.3rem;
    }

    .upload-area h4 {
        font-size: 1.1rem;
    }

    .upload-btn, .process-btn {
        padding: 0.8rem 1.2rem;
        font-size: 0.9rem;
    }

    .result-area {
        font-size: 0.8rem;
        padding: 1rem;
    }
}

@media (max-width: 400px) {
    .logo {
        font-size: 1.5rem;
    }
    
    .logo i {
        font-size: 1.8rem;
    }
    
    nav ul li a {
        padding: 0.5rem 1rem;
        font-size: 0.9rem;
    }
    
    .title-text {
        font-size: 1.8rem;
    }
    
    .floating-card {
        min-width: 70px;
        padding: 0.8rem;
    }
    
    .floating-card i {
        font-size: 1.3rem;
    }
    
    .floating-card span {
        font-size: 0.8rem;
    }
}

/* 横屏手机优化 */
@media (max-height: 600px) and (orientation: landscape) {
    .hero {
        min-height: auto;
        padding: 2rem 0;
    }
    
    .title-text {
        font-size: 2.5rem;
        margin-bottom: 0.5rem;
    }
    
    .floating-cards {
        margin: 1.5rem 0;
    }
    
    .quick-access {
        margin-top: 1.5rem;
    }
}

/* 高DPI屏幕优化 */
@media (-webkit-min-device-pixel-ratio: 2), (min-resolution: 192dpi) {
    .logo {
        -webkit-font-smoothing: antialiased;
        -moz-osx-font-smoothing: grayscale;
    }
}

/* 打印样式 */
@media print {
    .dtb-upload-section,
    .search-container,
    .modal,
    header {
        display: none !important;
    }
    
    body {
        background: white !important;
        color: black !important;
    }
    
    .device-card {
        break-inside: avoid;
        box-shadow: none !important;
        border: 1px solid #ccc !important;
    }
}