/* 页面特定样式 */
body {
    max-width: 1200px;
    margin: 0 auto;
    padding: 25px 20px;
    background: linear-gradient(135deg, #f5f7fa 0%, #c3cfe2 100%);
    min-height: 100vh;
    color: #34495e;
}

h1 {
    color: #2c3e50;
    margin-bottom: 20px;
    font-size: 2rem;
    font-weight: 700;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    letter-spacing: -0.5px;
}

@media (max-width: 767.98px) {
    body {
        padding: 15px 12px;
    }
    h1 {
        font-size: 1.5rem;
        margin-bottom: 15px;
    }
    .back-btn {
        font-size: 0.85rem;
        padding: 7px 14px;
    }
}

/* 二维码生成器整体样式 */
.generator {
    background-color: white;
    padding: 25px;
    border-radius: 14px;
    box-shadow: 0 4px 20px rgba(0, 0, 0, 0.08);
}

.gen-section {
    border-bottom: 1px solid #eee;
    padding-bottom: 24px;
    margin-bottom: 24px;
}

.decode-section {
    margin-top: 0;
}

/* 输入区域样式 */
.input-group {
    margin-bottom: 20px;
}

.input-group label {
    display: block;
    margin-bottom: 8px;
    color: #2c3e50;
    font-weight: bold;
}

textarea {
    width: 100%;
    min-height: 120px;
    padding: 10px;
    border: 1px solid #ddd;
    border-radius: 5px;
    font-family: "Microsoft YaHei", sans-serif;
    font-size: 14px;
    resize: vertical;
    box-sizing: border-box;
}

textarea:focus {
    outline: none;
    border-color: #2980b9;
}

/* 错误提示样式 */
.error-tip {
    color: #e74c3c;
    font-size: 14px;
    margin-top: 5px;
    display: none;
}

/* 设置区域样式 */
.settings-group {
    margin-bottom: 20px;
    padding: 20px;
    background-color: #f8f9fa;
    border-radius: 8px;
}

.settings-group h3 {
    margin: 0 0 15px 0;
    color: #2c3e50;
    font-size: 1.1rem;
}

.settings-row {
    display: flex;
    gap: 20px;
    flex-wrap: wrap;
}

.setting-item {
    display: flex;
    align-items: center;
    gap: 8px;
}

.setting-item label {
    color: #34495e;
    font-size: 14px;
    white-space: nowrap;
}

.setting-item select {
    padding: 8px 12px;
    border: 1px solid #ddd;
    border-radius: 5px;
    font-family: "Microsoft YaHei", sans-serif;
    font-size: 14px;
    cursor: pointer;
}

.setting-item input[type="color"] {
    width: 50px;
    height: 35px;
    border: 1px solid #ddd;
    border-radius: 5px;
    cursor: pointer;
}

/* 按钮组样式 */
.btn-group {
    margin-bottom: 20px;
    display: flex;
    gap: 10px;
}

button {
    padding: 10px 20px;
    border: none;
    border-radius: 5px;
    cursor: pointer;
    font-family: "Microsoft YaHei", sans-serif;
    font-size: 14px;
    transition: background-color 0.2s;
}

.generate-btn {
    background-color: #2980b9;
    color: white;
}

.generate-btn:hover {
    background-color: #1f618d;
}

.clear-btn {
    background-color: #95a5a6;
    color: white;
}

.clear-btn:hover {
    background-color: #7f8c8d;
}

.download-btn {
    background-color: #27ae60;
    color: white;
    padding: 12px 24px;
    font-size: 16px;
}

.download-btn:hover:not(:disabled) {
    background-color: #229954;
}

.download-btn:disabled {
    background-color: #bdc3c7;
    cursor: not-allowed;
    opacity: 0.6;
}

/* 结果区域样式 */
.result-group {
    margin-top: 30px;
    text-align: center;
}

.qr-display {
    margin-bottom: 20px;
    min-height: 300px;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 20px;
    background-color: #f8f9fa;
    border-radius: 8px;
    border: 2px dashed #ddd;
}

.qr-display canvas {
    max-width: 100%;
    height: auto;
    border-radius: 8px;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
}

.qr-placeholder {
    color: #95a5a6;
    font-size: 14px;
    margin-top: 10px;
}

.qr-display.has-qrcode .qr-placeholder {
    display: none;
}

.download-group {
    margin-top: 20px;
}

/* 识别区域样式 */
.decode-title {
    font-size: 1.2rem;
    color: #2c3e50;
    margin: 0 0 8px 0;
}

.decode-desc {
    margin: 0 0 16px 0;
    font-size: 14px;
    color: #7f8c8d;
}

.decode-upload-row {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 10px;
    margin-bottom: 8px;
}

.decode-label {
    font-size: 14px;
    color: #34495e;
}

#decodeFile {
    flex: 1;
}

.decode-btn {
    background-color: #2980b9;
    color: #fff;
}

.decode-btn:hover {
    background-color: #1f618d;
}

.decode-clear-btn {
    background-color: #95a5a6;
    color: #fff;
}

.decode-clear-btn:hover {
    background-color: #7f8c8d;
}

.decode-preview-group {
    margin-top: 16px;
    display: grid;
    grid-template-columns: 1fr 1.2fr;
    gap: 20px;
}

.decode-preview-box,
.decode-result-box {
    background-color: #f8f9fa;
    border-radius: 8px;
    padding: 15px;
    border: 1px solid #eee;
}

.decode-preview-box {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    min-height: 180px;
}

.decode-preview-img {
    max-width: 100%;
    max-height: 220px;
    display: none;
    border-radius: 4px;
    box-shadow: 0 2px 6px rgba(0, 0, 0, 0.1);
}

.decode-preview-placeholder {
    font-size: 13px;
    color: #95a5a6;
}

.decode-result-header-row {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 10px;
    margin-bottom: 8px;
}

.decode-result-header {
    font-size: 14px;
    color: #34495e;
}

.decode-copy-btn {
    padding: 6px 12px;
    font-size: 12px;
    background-color: #3498db;
    color: #fff;
    border-radius: 4px;
}

.decode-copy-btn:hover:not(:disabled) {
    background-color: #2980b9;
}

.decode-copy-btn:disabled {
    background-color: #bdc3c7;
    cursor: not-allowed;
}

.decode-result-content {
    margin: 0;
    padding: 10px;
    background-color: #fff;
    border-radius: 4px;
    border: 1px solid #e0e0e0;
    font-size: 13px;
    font-family: "Consolas", monospace;
    white-space: pre-wrap;
    word-break: break-all;
}

/* 响应式适配（手机端） */
@media (max-width: 600px) {
    .generator {
        display: block;
    }
    .gen-section {
        border-right: none;
        border-bottom: 1px solid #eee;
        padding-right: 0;
        padding-bottom: 20px;
        margin-bottom: 20px;
    }
    .btn-group {
        flex-direction: column;
    }
    .settings-row {
        flex-direction: column;
        gap: 15px;
    }
    .setting-item {
        width: 100%;
        justify-content: space-between;
    }
    .qr-display {
        min-height: 250px;
        padding: 15px;
    }
    .decode-preview-group {
        grid-template-columns: 1fr;
    }
}