/* ===== 二维码工具样式 ===== */
.qr-tool {
    width: 100%;
    max-width: 100%;
}

.qr-tool-body {
    background: #fff;
    border: 1px solid #e0e0e0;
    border-radius: 8px;
    padding: 28px 24px;
    box-shadow: 0 1px 4px rgba(0,0,0,0.04);
}

/* ===== 介绍区 ===== */
.qr-tool-intro {
    background: #f8f9fa;
    border-left: 4px solid #2d7d46;
    padding: 14px 18px;
    border-radius: 4px;
    margin-bottom: 24px;
    font-size: 14px;
}
.qr-tool-intro code {
    background: #e9ecef;
    padding: 1px 6px;
    border-radius: 3px;
    font-size: 13px;
}
.qr-tool-intro p {
    margin: 4px 0;
}

/* ===== 生成区 ===== */
.qr-generator {
    padding: 4px 0 8px 0;
}

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

.qr-form-group label {
    display: block;
    font-weight: 600;
    margin-bottom: 8px;
    color: #2c3e50;
    font-size: 15px;
}

.qr-form-group .required {
    color: #e74c3c;
}

.qr-input {
    width: 100%;
    max-width: 600px;
    padding: 12px 15px;
    font-size: 16px;
    border: 1px solid #ccc;
    border-radius: 6px;
    transition: 0.2s;
    box-sizing: border-box;
}
.qr-input:focus {
    border-color: #2d7d46;
    outline: none;
    box-shadow: 0 0 0 3px rgba(45, 125, 70, 0.15);
}

.qr-size-hint {
    font-size: 13px;
    color: #7f8c8d;
    margin-top: 6px;
}

.qr-error-msg {
    color: #e74c3c;
    font-size: 14px;
    margin-top: 6px;
}

.qr-btn-generate {
    background: #2d7d46;
    color: #fff;
    border: none;
    padding: 12px 36px;
    font-size: 16px;
    border-radius: 6px;
    cursor: pointer;
    font-weight: 600;
    transition: background 0.2s;
    margin-top: 4px;
}
.qr-btn-generate:hover {
    background: #236a3a;
}
.qr-btn-generate:disabled {
    opacity: 0.5;
    cursor: not-allowed;
}

/* ===== 结果区 ===== */
.qr-result-area {
    margin-top: 30px;
    background: #f8f9fa;
    border-radius: 8px;
    padding: 20px 24px;
    border: 1px solid #e0e0e0;
}

.qr-result-section {
    margin-bottom: 16px;
}
.qr-result-section:last-of-type {
    margin-bottom: 20px;
}

.qr-result-label {
    font-weight: 600;
    color: #2c3e50;
    margin-bottom: 8px;
    font-size: 14px;
}

.qr-result-link {
    word-break: break-all;
    background: #fff;
    padding: 10px 14px;
    border-radius: 6px;
    border: 1px solid #ddd;
}
.qr-result-link a {
    color: #2d7d46;
    text-decoration: none;
    word-break: break-all;
}
.qr-result-link a:hover {
    text-decoration: underline;
}

.qr-image-container {
    text-align: center;
    background: #fff;
    padding: 20px;
    border-radius: 6px;
    border: 1px solid #ddd;
    min-height: 120px;
    display: flex;
    align-items: center;
    justify-content: center;
}
.qr-image-container img {
    max-width: 100%;
    max-height: 400px;
    border-radius: 4px;
}

.qr-result-actions {
    display: flex;
    gap: 14px;
    flex-wrap: wrap;
    margin-top: 8px;
}

.qr-btn-copy,
.qr-btn-download {
    padding: 10px 24px;
    font-size: 14px;
    border-radius: 6px;
    cursor: pointer;
    font-weight: 600;
    border: none;
    transition: background 0.2s;
    text-decoration: none;
    display: inline-block;
}
.qr-btn-copy {
    background: #e9ecef;
    color: #333;
}
.qr-btn-copy:hover {
    background: #d0d4d8;
}
.qr-btn-copy.copied {
    background: #2d7d46;
    color: #fff;
}

.qr-btn-download {
    background: #2d7d46;
    color: #fff;
}
.qr-btn-download:hover {
    background: #236a3a;
}

/* ===== 使用说明 ===== */
.qr-tool-usage {
    background: #f0f7ff;
    padding: 14px 18px;
    border-radius: 6px;
    border-left: 4px solid #1a73e8;
    margin-top: 24px;
}
.qr-tool-usage p {
    margin: 0 0 6px 0;
}
.qr-tool-usage ol {
    margin: 4px 0 0 0;
    padding-left: 20px;
}
.qr-tool-usage li {
    margin: 4px 0;
    font-size: 14px;
}
.qr-tool-usage code {
    background: #e9ecef;
    padding: 1px 6px;
    border-radius: 3px;
    font-size: 13px;
}

/* ===== 响应式 ===== */
@media (max-width: 640px) {
    .qr-tool-body {
        padding: 16px 14px;
    }
    .qr-input {
        max-width: 100%;
    }
    .qr-result-area {
        padding: 16px;
    }
    .qr-result-actions {
        flex-direction: column;
        align-items: stretch;
    }
    .qr-btn-copy,
    .qr-btn-download {
        text-align: center;
    }
}