.tool-container .title-box {
    text-align: center;
    margin-bottom: 24px;
}

.tool-container .main-title {
    font-size: clamp(1.8rem, 4vw, 2.5rem);
    font-weight: bold;
    color: #333;
    margin-bottom: 8px;
}

.tool-container .sub-title {
    color: #666;
    font-size: 16px;
}

.tool-container .card {
    background: #fff;
    border-radius: 12px;
    box-shadow: 0 1px 3px rgba(0,0,0,0.08);
    padding: 24px;
    margin-bottom: 24px;
    width: 100%;
    box-sizing: border-box;
}

.tool-container .form-group {
    margin-bottom: 16px;
}

.tool-container label {
    display: block;
    color: #374151;
    margin-bottom: 8px;
}

.tool-container textarea {
    width: 100%;
    border: 1px solid #d1d5db;
    border-radius: 6px;
    padding: 12px;
    font-size: 14px;
    box-sizing: border-box;
    outline: none;
}

.tool-container textarea:focus {
    box-shadow: 0 0 0 1px #3b82f6;
    border-color: #3b82f6;
}

.tool-container .btn-row {
    display: flex;
    align-items: center;
    gap: 8px;
    margin-bottom: 16px;
}

.tool-container .btn {
    padding: 8px 16px;
    border-radius: 6px;
    border: none;
    cursor: pointer;
    font-size: 14px;
}

.tool-container .btn-primary {
    background-color: #2563eb;
    color: #fff;
}

.tool-container .btn-primary:hover {
    background-color: #1d4ed8;
}

.tool-container .btn-default {
    background-color: #e5e7eb;
    color: #1f2937;
}

.tool-container .btn-default:hover {
    background-color: #d1d5db;
}

.tool-container .result-head {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 8px;
}

.tool-container .auto-select {
    display: flex;
    align-items: center;
    gap: 4px;
    font-size: 14px;
    color: #4b5563;
}

.tool-container .info-bar {
    background-color: #ecfdf5;
    border: 1px solid #a7f3d0;
    border-radius: 6px;
    padding: 12px;
    font-size: 14px;
    color: #1f2937;
    display: flex;
    align-items: center;
    gap: 8px;
}

.tool-container .copy-btn {
    color: #2563eb;
    text-decoration: none;
}

.tool-container .copy-btn:hover {
    text-decoration: underline;
}

.tool-container .tip {
    font-size: 14px;
    color: #6b7280;
    margin-left: 8px;
}

.tool-container kbd {
    background: #f3f4f6;
    padding: 2px 6px;
    border-radius: 4px;
    border: 1px solid #d1d5db;
    font-size: 12px;
}