/* 响应式设计 */

/* 大屏幕设备 (1200px+) */
@media (min-width: 1200px) {
    .images-grid {
        grid-template-columns: repeat(4, 1fr);
    }

    .side-panel {
        width: 350px;
    }
}

/* 中等屏幕设备 (768px - 1199px) */
@media (max-width: 1199px) {
    .content-area {
        flex-direction: column;
    }

    .side-panel {
        width: 100%;
        max-height: none;
        position: static;
        order: -1;
    }

    .images-grid {
        grid-template-columns: repeat(3, 1fr);
    }
}

/* 平板设备 (768px - 991px) */
@media (max-width: 991px) {
    .container {
        padding: 0 15px;
    }

    .toolbar {
        flex-direction: column;
        align-items: stretch;
        gap: 1rem;
    }

    .toolbar-left,
    .toolbar-right {
        justify-content: center;
        flex-wrap: wrap;
    }

    .images-grid {
        grid-template-columns: repeat(3, 1fr);
        gap: 0.75rem;
    }

    .image-preview {
        height: 150px;
    }

    .side-panel {
        display: grid;
        grid-template-columns: repeat(2, 1fr);
        gap: 0;
    }

    .panel-header {
        grid-column: 1 / -1;
    }
}

/* 小屏幕设备 (576px - 767px) */
@media (max-width: 767px) {
    .header .container {
        flex-direction: column;
        text-align: center;
        gap: 0.5rem;
    }

    .header-info {
        flex-direction: column;
        gap: 0.5rem;
    }

    .language-switcher {
        order: -1;
    }

    .logo {
        font-size: 1.25rem;
    }

    .upload-area {
        padding: 2rem 1rem;
    }

    .upload-icon {
        font-size: 3rem;
    }

    .upload-area h3 {
        font-size: 1.1rem;
    }

    .images-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 0.5rem;
        padding: 0.75rem;
    }

    .image-preview {
        height: 120px;
    }

    .image-info {
        padding: 0.5rem;
    }

    .image-info h4 {
        font-size: 0.8rem;
    }

    .image-info p {
        font-size: 0.7rem;
    }

    .side-panel {
        display: block;
        width: 100%;
    }

    .position-selector {
        width: 100px;
    }

    .position-btn {
        width: 30px;
        height: 30px;
        font-size: 0.7rem;
    }

    .modal-content {
        margin: 1rem;
        max-width: calc(100vw - 2rem);
        max-height: calc(100vh - 2rem);
    }

    #previewImage {
        max-width: calc(100vw - 4rem);
        max-height: calc(100vh - 12rem);
    }
}

/* 超小屏幕设备 (< 576px) */
@media (max-width: 575px) {
    .main {
        padding: 1rem 0;
    }

    .container {
        padding: 0 10px;
    }

    .header-info {
        font-size: 0.8rem;
    }

    .language-switcher {
        font-size: 0.8rem;
    }

    .upload-area {
        padding: 1.5rem 0.5rem;
    }

    .upload-icon {
        font-size: 2.5rem;
    }

    .upload-area h3 {
        font-size: 1rem;
        margin-bottom: 0.25rem;
    }

    .upload-area p {
        font-size: 0.9rem;
        margin-bottom: 1rem;
    }

    .toolbar {
        padding: 0.75rem;
    }

    .btn {
        padding: 0.4rem 0.8rem;
        font-size: 0.8rem;
    }

    .images-grid {
        grid-template-columns: 1fr;
        gap: 0.75rem;
        padding: 0.5rem;
    }

    .image-preview {
        height: 200px;
    }

    .content-area {
        gap: 1rem;
    }

    .panel-section {
        padding: 0.75rem;
    }

    .panel-section h4 {
        font-size: 0.9rem;
        margin-bottom: 0.75rem;
    }

    .watermark-controls {
        gap: 0.75rem;
    }

    .watermark-type {
        flex-direction: column;
        gap: 0.5rem;
    }

    .format-controls {
        gap: 0.75rem;
    }

    .position-selector {
        width: 90px;
    }

    .position-btn {
        width: 26px;
        height: 26px;
        font-size: 0.6rem;
    }

    .progress-modal {
        margin: 1rem;
        padding: 1.5rem;
        min-width: auto;
        width: calc(100vw - 2rem);
    }
}

/* 横屏模式优化 */
@media (max-height: 600px) and (orientation: landscape) {
    .upload-area {
        padding: 1rem;
    }

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

    .upload-area h3 {
        font-size: 1rem;
        margin-bottom: 0.25rem;
    }

    .upload-area p {
        margin-bottom: 0.5rem;
    }

    .main {
        padding: 1rem 0;
    }

    .modal-content {
        max-height: 95vh;
    }

    #previewImage {
        max-height: 50vh;
    }
}

/* 高对比度模式支持 */
@media (prefers-contrast: high) {
    .upload-area {
        border-width: 3px;
    }

    .btn {
        border: 2px solid transparent;
    }

    .btn-primary {
        border-color: #007bff;
    }

    .btn-secondary {
        border-color: #6c757d;
    }

    .btn-danger {
        border-color: #dc3545;
    }

    .btn-success {
        border-color: #28a745;
    }

    .image-item.selected {
        border-width: 3px;
    }
}

/* 减少动画模式 */
@media (prefers-reduced-motion: reduce) {
    * {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
    }

    .upload-area:hover {
        transform: none;
    }

    .btn:hover {
        transform: none;
    }

    .image-item:hover {
        transform: none;
    }
}

/* 打印样式 */
@media print {
    .header,
    .toolbar,
    .side-panel,
    .modal,
    .progress-overlay {
        display: none !important;
    }

    .main {
        padding: 0;
    }

    .images-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 1rem;
        box-shadow: none;
        border: 1px solid #000;
    }

    .image-item {
        border: 1px solid #000;
        break-inside: avoid;
    }

    .image-preview {
        height: auto;
    }

    .image-header,
    .image-delete {
        display: none;
    }
}

/* 触摸设备优化 */
@media (hover: none) and (pointer: coarse) {
    .btn {
        min-height: 44px;
        min-width: 44px;
    }

    .image-delete {
        width: 32px;
        height: 32px;
    }

    .image-checkbox {
        width: 20px;
        height: 20px;
    }

    .position-btn {
        min-width: 44px;
        min-height: 44px;
    }

    .modal-close {
        width: 44px;
        height: 44px;
        font-size: 1.8rem;
    }
}

/* 暗色主题支持 */
@media (prefers-color-scheme: dark) {
    body {
        background-color: #1a1a1a;
        color: #e9ecef;
    }

    .upload-area,
    .toolbar,
    .images-grid,
    .side-panel,
    .modal-content {
        background: #2d3748;
        border-color: #4a5568;
    }

    .upload-area {
        border-color: #4299e1;
    }

    .upload-area:hover {
        background-color: #2a4365;
    }

    .panel-header,
    .modal-header {
        background: #1a202c;
        border-color: #4a5568;
    }

    .image-info {
        background: #1a202c;
    }

    .format-controls select,
    #watermarkText {
        background: #1a202c;
        border-color: #4a5568;
        color: #e9ecef;
    }

    .position-btn {
        background: #1a202c;
        border-color: #4a5568;
        color: #e9ecef;
    }

    .position-btn:hover {
        background: #2d3748;
    }

    .position-btn.active {
        background: #4299e1;
    }
}