.tool-container {
    max-width: 800px;
    margin: 20px auto 40px;
    padding: 40px;
    background: var(--card-bg);
    backdrop-filter: blur(10px);
    border: 1px solid var(--border-color);
    border-radius: 20px;
    box-shadow: var(--shadow-lg);
    position: relative;
    overflow: hidden;
}

.tool-container::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: var(--primary-gradient);
}

.tool-header {
    text-align: center;
    margin-bottom: 40px;
}

.tool-header h1 {
    color: var(--text-primary);
    font-size: 28px;
    font-weight: 700;
    margin-bottom: 15px;
    background: var(--primary-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.tool-header p {
    color: var(--text-muted);
    font-size: 16px;
    line-height: 1.6;
}

.form-group {
    margin-bottom: 20px;
}

.form-group {
    margin-bottom: 25px;
}

.form-group label {
    display: block;
    margin-bottom: 8px;
    font-weight: 500;
    color: var(--text-primary);
    font-size: 14px;
}

.form-group input[type="text"], .form-group input[type="url"], .form-group input[type="file"], .form-group select {
    width: 100%;
    padding: 12px 16px;
    border: 1px solid var(--border-color);
    border-radius: 12px;
    font-size: 15px;
    background: rgba(255, 255, 255, 0.05);
    color: var(--text-primary);
    transition: all 0.3s ease;
    box-sizing: border-box;
}

.form-group input:focus, .form-group select:focus {
    outline: none;
    border-color: var(--primary-blue-light);
    background: rgba(255, 255, 255, 0.08);
    box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.1);
}

.btn-extract {
    background: linear-gradient(135deg, var(--primary-blue), var(--primary-blue-dark));
    color: white;
    border: none;
    padding: 14px 28px;
    border-radius: 12px;
    cursor: pointer;
    font-size: 16px;
    font-weight: 600;
    width: 100%;
    transition: all 0.3s ease;
    box-shadow: var(--shadow);
    position: relative;
    overflow: hidden;
}

.btn-extract::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.2), transparent);
    transition: left 0.5s ease;
}

.btn-extract:hover::before {
    left: 100%;
}

.btn-extract:hover {
    background: linear-gradient(135deg, var(--primary-blue-light), var(--primary-blue));
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

.result-area {
    margin-top: 25px;
    padding: 20px;
    background: rgba(59, 130, 246, 0.1);
    border: 1px solid rgba(59, 130, 246, 0.3);
    border-radius: 12px;
    backdrop-filter: blur(10px);
}

.result-area img {
    max-width: 100%;
    margin-top: 15px;
    border-radius: 8px;
    box-shadow: var(--shadow);
}

.result-area a {
    color: var(--primary-blue-light);
    word-break: break-all;
    text-decoration: none;
    font-weight: 500;
}

.result-area a:hover {
    color: var(--accent-cyan);
    text-decoration: underline;
}

/* 工具导航菜单样式 */
.tool-nav {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 20px;
    margin: 40px 0;
    max-width: 800px;
    margin-left: auto;
    margin-right: auto;
}

/* 移动端工具导航优化 - 改为水平滚动卡片 */
@media (max-width: 768px) {
    .tool-nav {
        display: flex;
        gap: 15px;
        margin: 30px 0;
        padding: 0 10px;
        overflow-x: auto;
        overflow-y: hidden;
        scrollbar-width: thin;
        scrollbar-color: var(--border-color);
        justify-content: flex-start;
        flex-wrap: nowrap;
        min-height: 140px;
        align-items: stretch;
    }

    /* 自定义滚动条 */
    .tool-nav::-webkit-scrollbar {
        height: 4px;
    }

    .tool-nav::-webkit-scrollbar-track {
        background: var(--bg-subtle);
        border-radius: 2px;
    }

    .tool-nav::-webkit-scrollbar-thumb {
        background: var(--primary-blue);
        border-radius: 2px;
        min-width: 40px;
    }

    .tool-nav-item {
        flex: 0 0 160px;
        padding: 15px 12px;
        display: flex;
        flex-direction: column;
        align-items: center;
        justify-content: center;
        min-height: 120px;
        text-align: center;
    }

    .tool-icon {
        font-size: 32px;
        margin-bottom: 8px;
        line-height: 1;
    }

    .tool-name {
        font-size: 12px;
        line-height: 1.3;
        text-align: center;
        word-break: break-word;
    }

    .tool-container {
        padding: 25px 20px;
        margin: 0 0 30px 0;
        border-radius: 20px;
    }

    .tool-header h1 {
        font-size: 22px;
        margin-bottom: 12px;
    }

    .tool-header p {
        font-size: 14px;
        margin-bottom: 25px;
        line-height: 1.5;
    }

    .section-content {
        padding: 25px 15px 20px 15px;
    }

    #loginStatus, #loginPrompt {
        margin: 0 0 20px 0;
        padding: 15px;
        border-radius: 12px;
    }

    #loginStatus span, #loginPrompt span {
        font-size: 14px;
    }

    .form-group {
        margin-bottom: 18px;
    }

    .form-group input, .form-group select {
        font-size: 16px; /* 防止iOS自动缩放 */
    }

    .btn-extract {
        font-size: 15px;
        padding: 12px 20px;
    }
}

@media (max-width: 480px) {
    .tool-nav {
        gap: 12px;
        padding: 0 5px;
        min-height: 130px;
    }

    .tool-nav-item {
        flex: 0 0 140px;
        padding: 12px 10px;
        min-height: 110px;
    }

    .tool-icon {
        font-size: 28px;
        margin-bottom: 6px;
    }

    .tool-name {
        font-size: 11px;
    }

    .tool-container {
        padding: 20px 15px;
        margin: 0 0 25px 0;
    }

    .tool-header h1 {
        font-size: 20px;
    }

    .tool-header p {
        font-size: 13px;
        margin-bottom: 20px;
    }

    .section-content {
        padding: 20px 10px 15px 10px;
    }

    #loginStatus, #loginPrompt {
        margin: 0 0 15px 0;
        padding: 12px;
    }

    #loginStatus span, #loginPrompt span {
        font-size: 13px;
    }

    .form-group {
        margin-bottom: 15px;
    }

    .btn-extract {
        font-size: 14px;
        padding: 10px 18px;
    }
}

.tool-nav-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 12px;
    padding: 24px 20px;
    background: var(--card-bg);
    backdrop-filter: blur(10px);
    border: 1px solid var(--border-color);
    border-radius: 16px;
    cursor: pointer;
    color: var(--text-secondary);
    transition: all 0.3s ease;
    position: relative;
    overflow: hidden;
}

.tool-nav-item::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 2px;
    background: var(--primary-gradient);
    transform: scaleX(0);
    transition: transform 0.3s ease;
}

.tool-nav-item:hover {
    transform: translateY(-5px);
    background: var(--hover-bg);
    border-color: var(--primary-blue);
    box-shadow: var(--shadow-lg);
    color: var(--text-primary);
}

.tool-nav-item.active {
    background: var(--active-bg);
    border-color: var(--primary-blue);
    color: var(--text-primary);
}

.tool-nav-item.active::before {
    transform: scaleX(1);
}

.tool-nav-item.active:hover {
    background: rgba(59, 130, 246, 0.3);
}

.tool-icon {
    font-size: 32px;
    display: block;
    filter: grayscale(1);
    opacity: 0.7;
    transition: all 0.3s ease;
}

.tool-nav-item:hover .tool-icon,
.tool-nav-item.active .tool-icon {
    filter: grayscale(0);
    opacity: 1;
    transform: scale(1.1);
}

.tool-name {
    font-size: 14px;
    font-weight: 600;
    text-align: center;
}

/* 复制按钮样式 */
.copy-btn {
    background: #07C160;
    color: white;
    border: none;
    padding: 5px 10px;
    border-radius: 4px;
    cursor: pointer;
    margin-left: 10px;
    font-size: 14px;
}

.copy-btn:hover {
    background: #06AE56;
}

/* 二维码特定样式 */
.qr-result {
    text-align: center;
}

.qr-code {
    display: inline-block;
    margin: 10px 0;
    padding: 10px;
    background: white;
    border: 1px solid #ddd;
    border-radius: 4px;
}

.size-controls {
    display: flex;
    gap: 10px;
    align-items: center;
    margin-bottom: 15px;
    flex-wrap: wrap;
}

.size-controls label {
    font-size: 14px;
    color: #666;
}

.size-controls select {
    padding: 5px 8px;
    border: 1px solid #ddd;
    border-radius: 4px;
    font-size: 14px;
}

.download-btn {
    background: #1890ff;
    color: white;
    border: none;
    padding: 8px 16px;
    border-radius: 4px;
    cursor: pointer;
    font-size: 14px;
    margin-left: 10px;
}

.download-btn:hover {
    background: #096dd9;
}

/* 图片格式转换工具样式 */
.upload-area {
    border: 2px dashed #ddd;
    border-radius: 8px;
    padding: 40px;
    text-align: center;
    background: #fafafa;
    cursor: pointer;
    transition: all 0.3s ease;
    position: relative;
}

.upload-area:hover {
    border-color: #07C160;
    background: #f5fcf8;
}

.upload-area.dragover {
    border-color: #07C160;
    background: #f5fcf8;
    transform: scale(1.02);
}

.upload-icon {
    font-size: 48px;
    color: #ccc;
    margin-bottom: 15px;
}

.upload-text {
    color: #666;
    font-size: 16px;
    margin-bottom: 10px;
}

.upload-hint {
    color: #999;
    font-size: 14px;
}

.format-selector {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(120px, 1fr));
    gap: 15px;
    margin-bottom: 25px;
}

.format-option {
    padding: 15px;
    border: 2px solid #e0e0e0;
    border-radius: 8px;
    text-align: center;
    cursor: pointer;
    transition: all 0.3s ease;
}

.format-option:hover {
    border-color: #07C160;
    transform: translateY(-2px);
}

.format-option.selected {
    border-color: #07C160;
    background: #f5fcf8;
}

.format-name {
    font-weight: bold;
    color: #333;
    margin-bottom: 5px;
}

.format-desc {
    font-size: 12px;
    color: #666;
}

.quality-control {
    margin-bottom: 25px;
}

.quality-slider {
    display: flex;
    align-items: center;
    gap: 15px;
}

.quality-slider input[type="range"] {
    flex: 1;
    height: 6px;
    background: #e0e0e0;
    outline: none;
    opacity: 0.7;
    transition: opacity 0.2s;
    padding: 0;
}

.quality-slider input[type="range"]:hover {
    opacity: 1;
}

.quality-value {
    min-width: 40px;
    text-align: center;
    font-weight: bold;
    color: #07C160;
}

.result-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 20px;
}

.result-title {
    font-size: 18px;
    font-weight: bold;
    color: #333;
}

.image-comparison {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 20px;
    margin-bottom: 20px;
}

.image-box {
    text-align: center;
}

.image-box h4 {
    margin-bottom: 10px;
    color: #333;
    font-size: 14px;
}

.image-info {
    margin-top: 10px;
    font-size: 12px;
    color: #666;
}

.download-section {
    display: flex;
    gap: 10px;
    justify-content: center;
    flex-wrap: wrap;
}

.download-button {
    background: #1890ff;
    color: white;
    border: none;
    padding: 10px 20px;
    border-radius: 4px;
    cursor: pointer;
    font-size: 14px;
    transition: all 0.3s ease;
    text-decoration: none;
    display: inline-block;
}

.download-button:hover {
    background: #096dd9;
    transform: translateY(-1px);
}

.copy-button {
    background: #722ed1;
    color: white;
    border: none;
    padding: 10px 20px;
    border-radius: 4px;
    cursor: pointer;
    font-size: 14px;
    transition: all 0.3s ease;
}

.copy-button:hover {
    background: #531dab;
}

.loading {
    display: inline-block;
    width: 20px;
    height: 20px;
    border: 3px solid rgba(255,255,255,.3);
    border-radius: 50%;
    border-top-color: white;
    animation: spin 1s ease-in-out infinite;
}

@keyframes spin {
    to { transform: rotate(360deg); }
}

@media (max-width: 768px) {
    .image-comparison {
        grid-template-columns: 1fr;
    }
}