/* qr-tools.css */
:root {
    --primary-color: #2c7be5;
    --primary-dark: #1a5fc1;
    --secondary-color: #6c757d;
    --success-color: #27b345;
    --warning-color: #fd7e14;
    --danger-color: #d92525;
    --light-color: #f8f9fa;
    --dark-color: #333;
    --border-color: #e4e7ed;
    --card-shadow: 0 4px 12px rgba(0, 0, 0, 0.08);
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: 'Segoe UI', 'Microsoft YaHei', sans-serif;
}

body {
    background: linear-gradient(135deg, #f5f7fa 0%, #e4edf5 100%);
    color: #333;
    line-height: 1.6;
    min-height: 100vh;
    padding: 20px;
}

.app-container {
    max-width: 1400px;
    margin: 0 auto;
}

.header {
    text-align: center;
    margin-bottom: 40px;
    padding-bottom: 25px;
    border-bottom: 1px solid rgba(0, 0, 0, 0.08);
}

.logo {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 15px;
    margin-bottom: 15px;
}

.logo i {
    color: var(--primary-color);
    font-size: 36px;
}

.logo h1 {
    font-size: 32px;
    color: var(--dark-color);
    font-weight: 700;
}

.subtitle {
    color: var(--secondary-color);
    font-size: 16px;
    max-width: 600px;
    margin: 0 auto;
}

.header-actions {
    margin-top: 20px;
    display: flex;
    justify-content: center;
    gap: 15px;
    flex-wrap: wrap;
}

.btn {
    padding: 10px 20px;
    border: none;
    border-radius: 8px;
    font-weight: 600;
    cursor: pointer;
    display: inline-flex;
    align-items: center;
    gap: 8px;
    transition: all 0.3s;
    font-size: 14px;
    text-decoration: none;
}

.btn-primary {
    background-color: var(--primary-color);
    color: white;
}

.btn-primary:hover {
    background-color: var(--primary-dark);
}

.btn-success {
    background-color: var(--success-color);
    color: white;
}

.btn-success:hover {
    background-color: #1f9c3a;
}

.btn-warning {
    background-color: var(--warning-color);
    color: white;
}

.btn-warning:hover {
    background-color: #e56a00;
}

.btn-outline {
    background-color: transparent;
    color: var(--secondary-color);
    border: 2px solid var(--border-color);
}

.btn-outline:hover {
    background-color: var(--light-color);
    color: var(--dark-color);
}

.dashboard {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 30px;
    margin-bottom: 30px;
}

@media (max-width: 1100px) {
    .dashboard {
        grid-template-columns: 1fr;
    }
}

.card {
    background-color: white;
    border-radius: 16px;
    box-shadow: var(--card-shadow);
    overflow: hidden;
    transition: transform 0.3s, box-shadow 0.3s;
    height: 100%;
}

.card:hover {
    transform: translateY(-5px);
    box-shadow: 0 10px 25px rgba(0, 0, 0, 0.12);
}

.card-header {
    padding: 22px 30px;
    background: linear-gradient(90deg, var(--primary-color), var(--primary-dark));
    color: white;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.card-header h2 {
    font-size: 22px;
    font-weight: 600;
    display: flex;
    align-items: center;
    gap: 12px;
}

.formula-display {
    background: rgba(255, 255, 255, 0.2);
    padding: 5px 12px;
    border-radius: 20px;
    font-size: 14px;
}

.card-body {
    padding: 30px;
}

.form-group {
    margin-bottom: 22px;
}

.form-label {
    display: block;
    margin-bottom: 8px;
    font-weight: 600;
    color: var(--dark-color);
    display: flex;
    align-items: center;
    gap: 8px;
}

.form-label i {
    color: var(--primary-color);
    font-size: 16px;
}

.form-control {
    width: 100%;
    padding: 12px 16px;
    border: 2px solid #e1e5e9;
    border-radius: 8px;
    font-size: 15px;
    transition: all 0.3s;
    background-color: white;
}

.form-control:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(44, 123, 229, 0.1);
}

input[type="color"] {
    height: 50px;
    padding: 5px;
    cursor: pointer;
}

input[type="range"] {
    width: 100%;
    height: 8px;
    border-radius: 4px;
    background: #e1e5e9;
    outline: none;
    -webkit-appearance: none;
    margin: 15px 0;
}

input[type="range"]::-webkit-slider-thumb {
    -webkit-appearance: none;
    width: 22px;
    height: 22px;
    border-radius: 50%;
    background: var(--primary-color);
    cursor: pointer;
    border: 3px solid white;
    box-shadow: 0 2px 5px rgba(0, 0, 0, 0.2);
}

.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 20px;
}

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

.form-hint {
    font-size: 13px;
    color: var(--secondary-color);
    margin-top: 6px;
    display: flex;
    justify-content: space-between;
}

.config-content {
    display: none;
}

.config-content.active {
    display: block;
}

/* 二维码预览区域 */
.qr-preview-container {
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 300px;
    background: linear-gradient(135deg, #f8f9fa 0%, #ffffff 100%);
    border-radius: 12px;
    border: 2px dashed var(--border-color);
    padding: 30px;
    margin-bottom: 20px;
}

.qr-preview {
    position: relative;
    background-color: white;
    border-radius: 8px;
    padding: 15px;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
}

.qr-placeholder {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    color: var(--secondary-color);
    padding: 40px;
}

.qr-placeholder i {
    font-size: 80px;
    margin-bottom: 20px;
    color: #ddd;
}

.qr-placeholder p {
    font-size: 16px;
    text-align: center;
}

#qr-canvas {
    max-width: 100%;
    height: auto;
    border-radius: 4px;
}

/* 结果区域 */
.result-section {
    margin-top: 25px;
}

.result-card {
    background: linear-gradient(135deg, #f8f9fa 0%, #ffffff 100%);
    border-radius: 10px;
    padding: 22px;
    border: 2px solid #e1e8f0;
}

.result-card h3 {
    margin-bottom: 20px;
    color: var(--dark-color);
    font-size: 18px;
}

.result-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 20px;
    margin-bottom: 25px;
}

.result-item {
    text-align: center;
    padding: 18px;
    background-color: white;
    border-radius: 8px;
    border: 1px solid var(--border-color);
}

.result-label {
    font-size: 14px;
    color: var(--secondary-color);
    margin-bottom: 8px;
}

.result-value {
    font-size: 20px;
    font-weight: 700;
    color: var(--primary-color);
}

.result-unit {
    font-size: 14px;
    color: var(--secondary-color);
    margin-left: 4px;
    font-weight: normal;
}

/* 使用示例网格 */
.example-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 20px;
    margin-top: 20px;
}

.example-item {
    background-color: white;
    border-radius: 10px;
    padding: 20px;
    border: 1px solid var(--border-color);
    transition: transform 0.3s;
}

.example-item:hover {
    transform: translateY(-5px);
    border-color: var(--primary-color);
}

.example-item h4 {
    display: flex;
    align-items: center;
    gap: 10px;
    color: var(--dark-color);
    margin-bottom: 10px;
}

.example-item p {
    color: var(--secondary-color);
    font-size: 14px;
    line-height: 1.5;
}

/* 浮动消息样式 */
.floating-message {
    position: fixed;
    top: 20px;
    right: 20px;
    padding: 15px 25px;
    border-radius: 10px;
    font-weight: 600;
    z-index: 1001;
    box-shadow: 0 4px 12px rgba(0,0,0,0.15);
    animation: slideIn 0.3s ease;
    color: white;
    min-width: 200px;
}

@keyframes slideIn {
    from { transform: translateX(100%); opacity: 0; }
    to { transform: translateX(0); opacity: 1; }
}

@keyframes slideOut {
    from { transform: translateX(0); opacity: 1; }
    to { transform: translateX(100%); opacity: 0; }
}

/* 文件输入样式 */
input[type="file"] {
    padding: 8px;
}

/* 页脚 */
.footer {
    text-align: center;
    margin-top: 40px;
    padding-top: 25px;
    border-top: 1px solid rgba(0, 0, 0, 0.08);
    color: var(--secondary-color);
    font-size: 14px;
}

.footer-note {
    margin-top: 5px;
    font-size: 13px;
}

/* 状态颜色 */
.status-success {
    color: var(--success-color);
}

.status-warning {
    color: var(--warning-color);
}

.status-error {
    color: var(--danger-color);
}