/* ==================== 响应式布局 ==================== */

/* 平板设备 (max-width: 1024px) */
@media (max-width: 1024px) {
    .container {
        margin: 10px;
    }

    .title {
        font-size: 2em;
    }

    .preview-container {
        flex-direction: column;
        align-items: center;
    }

    .preview-arrow {
        transform: rotate(90deg);
        margin: 20px 0;
    }

    .preview-box {
        max-width: 100%;
        width: 100%;
    }
}

/* 移动设备 (max-width: 768px) */
@media (max-width: 768px) {
    body {
        padding: 10px;
    }

    .header {
        padding: 30px 20px;
    }

    .header-content {
        flex-direction: column;
        gap: 10px;
    }

    .title {
        font-size: 1.8em;
        flex-direction: column;
        gap: 10px;
    }

    .subtitle {
        font-size: 1em;
    }

    .upload-area {
        padding: 40px 20px;
        margin: 20px;
    }

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

    .upload-area h2 {
        font-size: 1.5em;
    }

    .upload-btn {
        padding: 12px 30px;
        font-size: 1em;
    }

    .process-area {
        padding: 20px;
    }

    .preview-box {
        padding: 15px;
    }

    .preview-title {
        font-size: 1.1em;
    }

    .canvas-wrapper {
        min-height: 200px;
    }

    .controls {
        flex-direction: column;
        gap: 10px;
    }

    .btn {
        width: 100%;
        justify-content: center;
        padding: 12px 20px;
    }

    .advanced-options {
        padding: 15px;
    }

    .option-group {
        flex-direction: column;
        align-items: flex-start;
        gap: 10px;
    }

    .option-group label {
        min-width: auto;
    }

    .option-group select,
    .option-group input[type="range"] {
        width: 100%;
    }

    .modal-content {
        width: 95%;
        max-height: 90vh;
    }

    .modal-header {
        padding: 20px;
    }

    .modal-header h2 {
        font-size: 1.5em;
    }

    .modal-body {
        padding: 20px;
    }

    .modal-body h3 {
        font-size: 1.2em;
    }

    .footer {
        padding: 20px;
    }

    .footer p {
        font-size: 0.9em;
    }
}

/* 小屏幕移动设备 (max-width: 480px) */
@media (max-width: 480px) {
    .title {
        font-size: 1.5em;
    }

    .title .icon {
        font-size: 1em;
    }

    .subtitle {
        font-size: 0.9em;
    }

    .upload-area {
        margin: 15px;
        padding: 30px 15px;
    }

    .upload-area h2 {
        font-size: 1.3em;
    }

    .upload-hint {
        font-size: 1em;
    }

    .upload-note {
        font-size: 0.85em;
    }

    .process-area {
        padding: 15px;
    }

    .preview-box {
        padding: 10px;
    }

    .detection-result {
        padding: 15px;
        flex-direction: column;
        text-align: center;
    }

    .result-icon {
        width: 40px;
        height: 40px;
        font-size: 1.5em;
    }

    .result-text strong {
        font-size: 1.1em;
    }

    .result-text p {
        font-size: 0.9em;
    }

    .btn {
        padding: 10px 16px;
        font-size: 0.95em;
    }

    .btn-icon {
        font-size: 1.1em;
    }

    .modal-content {
        border-radius: var(--radius-md);
    }

    .modal-header {
        padding: 15px;
    }

    .modal-header h2 {
        font-size: 1.3em;
    }

    .modal-close {
        font-size: 1.5em;
    }

    .modal-body {
        padding: 15px;
    }

    .modal-body h3 {
        font-size: 1.1em;
        margin: 20px 0 12px;
    }

    .modal-body ol,
    .modal-body ul {
        margin-left: 20px;
    }

    .modal-body li {
        font-size: 0.95em;
        margin-bottom: 8px;
    }

    .footer {
        padding: 15px;
    }
}

/* 横屏模式优化 */
@media (max-height: 600px) and (orientation: landscape) {
    .header {
        padding: 20px;
    }

    .title {
        font-size: 1.5em;
    }

    .subtitle {
        font-size: 0.9em;
    }

    .upload-area {
        padding: 30px 20px;
    }

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

/* 打印样式 */
@media print {
    body {
        background: white;
        padding: 0;
    }

    .container {
        box-shadow: none;
    }

    .header,
    .footer,
    .controls,
    .help-btn,
    .advanced-options {
        display: none;
    }

    .preview-container {
        page-break-inside: avoid;
    }
}