/* 全局样式和Tailwind CSS风格 */
:root {
    --primary-color: #3b82f6;
    --secondary-color: #64748b;
    --success-color: #10b981;
    --danger-color: #ef4444;
    --warning-color: #f59e0b;
    --bg-color: #f8fafc;
    --card-bg: #ffffff;
    --text-primary: #1e293b;
    --text-secondary: #64748b;
    --border-color: #e2e8f0;
    --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.05);
    --shadow-md: 0 4px 6px -1px rgb(0 0 0 / 0.1), 0 2px 4px -2px rgb(0 0 0 / 0.1);
    --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.1), 0 4px 6px -4px rgb(0 0 0 / 0.1);
    --radius-sm: 0.25rem;
    --radius-md: 0.375rem;
    --radius-lg: 0.5rem;
    --radius-xl: 0.75rem;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    background-color: var(--bg-color);
    color: var(--text-primary);
    line-height: 1.5;
    padding: 0;
    margin: 0;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 1rem;
}

header {
    text-align: center;
    margin-bottom: 2rem;
    padding: 2rem 0;
}

header h1 {
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--primary-color);
    margin-bottom: 0.5rem;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
}

header p {
    font-size: 1.125rem;
    color: var(--text-secondary);
}

.generator-container {
    display: flex;
    flex-wrap: wrap;
    gap: 2rem;
    justify-content: center;
}

.input-section {
    flex: 1;
    min-width: 300px;
    max-width: 500px;
    background-color: var(--card-bg);
    border-radius: var(--radius-lg);
    padding: 2rem;
    box-shadow: var(--shadow-md);
}

.preview-section {
    flex: 1;
    min-width: 300px;
    max-width: 500px;
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.form-group {
    margin-bottom: 1.5rem;
}

.form-group label {
    display: block;
    font-weight: 600;
    margin-bottom: 0.5rem;
    color: var(--text-primary);
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

textarea,
select,
input[type="color"] {
    width: 100%;
    padding: 0.75rem;
    border: 1px solid var(--border-color);
    border-radius: var(--radius-md);
    font-size: 1rem;
    transition: border-color 0.3s, box-shadow 0.3s;
}

textarea {
    resize: vertical;
    min-height: 100px;
}

textarea:focus,
select:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.1);
}

input[type="range"] {
    width: 100%;
    margin: 0.5rem 0;
}

.slider {
    -webkit-appearance: none;
    appearance: none;
    height: 6px;
    background: var(--border-color);
    border-radius: 3px;
    outline: none;
}

.slider::-webkit-slider-thumb {
    -webkit-appearance: none;
    appearance: none;
    width: 20px;
    height: 20px;
    background: var(--primary-color);
    border-radius: 50%;
    cursor: pointer;
    transition: transform 0.2s;
}

.slider::-webkit-slider-thumb:hover {
    transform: scale(1.1);
}

.slider::-moz-range-thumb {
    width: 20px;
    height: 20px;
    background: var(--primary-color);
    border-radius: 50%;
    cursor: pointer;
    border: none;
    transition: transform 0.2s;
}

.slider::-moz-range-thumb:hover {
    transform: scale(1.1);
}

#size-value {
    font-weight: 600;
    color: var(--primary-color);
}

.color-inputs {
    display: flex;
    gap: 1rem;
}

.color-inputs > div {
    flex: 1;
}

input[type="color"] {
    height: 40px;
    cursor: pointer;
    padding: 0.25rem;
}

.style-options {
    display: flex;
    gap: 1rem;
    flex-wrap: wrap;
}

.style-item {
    flex: 1;
    min-width: 80px;
    text-align: center;
}

.style-item input[type="radio"] {
    display: none;
}

.style-item label {
    display: block;
    padding: 0.75rem;
    border: 2px solid var(--border-color);
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: all 0.3s;
    font-weight: 400;
}

.style-item input[type="radio"]:checked + label {
    border-color: var(--primary-color);
    background-color: rgba(59, 130, 246, 0.1);
    font-weight: 600;
}

.style-item label:hover {
    border-color: var(--primary-color);
}

.logo-upload {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

/* 上传区域样式 */
.upload-area {
    display: flex;
    flex-direction: column;
    gap: 1rem;
    align-items: center;
}

.upload-btn {
    display: inline-block;
    padding: 0.75rem 1.5rem;
    background-color: var(--primary-color);
    color: white;
    border-radius: var(--radius-md);
    cursor: pointer;
    font-weight: 600;
    transition: all 0.3s;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.upload-btn:hover {
    background-color: #2563eb;
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.logo-upload input[type="file"] {
    display: none;
}

/* 图标预览容器 */
.logo-preview-container {
    width: 200px;
    height: 200px;
    border: 2px dashed var(--border-color);
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    background-color: #f9fafb;
    position: relative;
    overflow: hidden;
}

.logo-preview-placeholder {
    color: var(--text-secondary);
    font-size: 0.875rem;
    text-align: center;
}

.logo-preview {
    max-width: 100%;
    max-height: 100%;
    object-fit: contain;
}

/* 图标自定义选项 */
.logo-customization {
    display: flex;
    flex-direction: column;
    gap: 1rem;
    padding: 1rem;
    background-color: #f9fafb;
    border-radius: var(--radius-md);
    border: 1px solid var(--border-color);
}

.custom-option {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.custom-option label {
    font-weight: 600;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.custom-option .slider {
    margin: 0.25rem 0;
}

/* 复选框样式 */
.checkbox-container {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    position: relative;
    padding-left: 1.5rem;
    cursor: pointer;
    font-weight: 400;
}

.checkbox-container input {
    position: absolute;
    opacity: 0;
    cursor: pointer;
    height: 0;
    width: 0;
}

.checkmark {
    position: absolute;
    top: 0;
    left: 0;
    height: 18px;
    width: 18px;
    background-color: white;
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
}

.checkbox-container:hover input ~ .checkmark {
    border-color: var(--primary-color);
}

.checkbox-container input:checked ~ .checkmark {
    background-color: var(--primary-color);
}

.checkmark:after {
    content: "";
    position: absolute;
    display: none;
}

.checkbox-container input:checked ~ .checkmark:after {
    display: block;
}

.checkbox-container .checkmark:after {
    left: 6px;
    top: 2px;
    width: 5px;
    height: 10px;
    border: solid white;
    border-width: 0 3px 3px 0;
    transform: rotate(45deg);
}

/* 形状选择选项 */
.shape-options {
    display: flex;
    gap: 1rem;
}

.shape-item {
    flex: 1;
    min-width: 80px;
    text-align: center;
}

.shape-item input[type="radio"] {
    display: none;
}

.shape-item label {
    display: block;
    padding: 0.5rem;
    border: 2px solid var(--border-color);
    border-radius: var(--radius-md);
    cursor: pointer;
    transition: all 0.3s;
    font-weight: 400;
}

.shape-item input[type="radio"]:checked + label {
    border-color: var(--primary-color);
    background-color: rgba(59, 130, 246, 0.1);
    font-weight: 600;
}

.shape-item label:hover {
    border-color: var(--primary-color);
}

/* 图标操作按钮 */
.logo-actions {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.logo-templates {
    display: flex;
    gap: 0.75rem;
    justify-content: center;
}

.template-btn {
    width: 48px;
    height: 48px;
    border: 2px solid var(--border-color);
    border-radius: var(--radius-md);
    background-color: #fff;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 1.25rem;
    transition: all 0.3s;
    color: var(--text-primary);
}

.template-btn:hover {
    border-color: var(--primary-color);
    background-color: rgba(59, 130, 246, 0.1);
    transform: translateY(-2px);
}

.template-options {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(80px, 1fr));
    gap: 1rem;
}

.template-item {
    cursor: pointer;
    text-align: center;
    transition: transform 0.3s;
}

.template-item:hover {
    transform: translateY(-2px);
}

.template-preview {
    width: 100%;
    height: 80px;
    border: 2px solid var(--border-color);
    border-radius: var(--radius-md);
    margin-bottom: 0.5rem;
    background-color: #fff;
    position: relative;
    overflow: hidden;
}

.template-preview::after {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    width: 60%;
    height: 60%;
    background-color: #000;
    clip-path: polygon(0 0, 100% 0, 100% 100%, 0 100%);
}

.template-preview.colorful::after {
    background: linear-gradient(135deg, #3b82f6, #ec4899, #f59e0b);
}

.template-preview.minimal::after {
    background-color: #64748b;
}

.template-preview.business::after {
    background-color: #1e40af;
}

.template-preview.creative::after {
    background: radial-gradient(circle, #10b981, #3b82f6);
}

.template-item span {
    font-size: 0.875rem;
    color: var(--text-secondary);
}

.button-group {
    display: flex;
    gap: 1rem;
    margin-top: 2rem;
}

.btn-primary,
.btn-secondary {
    flex: 1;
    padding: 0.75rem 1.5rem;
    border: none;
    border-radius: var(--radius-md);
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.3s;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
}

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

.btn-primary:hover {
    background-color: #2563eb;
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

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

.btn-secondary:hover {
    background-color: #475569;
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
}

.preview-container {
    background-color: var(--card-bg);
    border-radius: var(--radius-lg);
    padding: 2rem;
    box-shadow: var(--shadow-md);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    min-height: 400px;
    position: relative;
}

.qr-preview {
    display: none;
    position: relative;
    background-color: white;
    padding: 1rem;
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-sm);
    transition: transform 0.3s;
}

.qr-preview:hover {
    transform: scale(1.02);
}

.qr-preview canvas {
    max-width: 100%;
    height: auto;
}

.qr-preview img.logo {
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    max-width: 20%;
    max-height: 20%;
    z-index: 10;
    border-radius: var(--radius-sm);
}

.preview-placeholder {
    text-align: center;
    color: var(--text-secondary);
}

.preview-placeholder i {
    margin-bottom: 1rem;
    opacity: 0.5;
}

.preview-info {
    background-color: var(--card-bg);
    border-radius: var(--radius-lg);
    padding: 1.5rem;
    box-shadow: var(--shadow-md);
}

.preview-info h3 {
    margin-bottom: 1rem;
    font-size: 1.25rem;
    color: var(--text-primary);
}

.preview-info p {
    margin-bottom: 0.5rem;
    color: var(--text-secondary);
}

.preview-info strong {
    color: var(--text-primary);
}

footer {
    margin-top: 3rem;
    text-align: center;
    padding: 2rem 0;
    color: var(--text-secondary);
    font-size: 0.875rem;
    border-top: 1px solid var(--border-color);
}

/* 圆形二维码样式 */
.qr-preview.circle canvas {
    border-radius: 10%;
}

/* 点状二维码样式 */
.qr-preview.dot canvas {
    filter: url('#dot-filter');
}

/* 响应式设计 */
@media (max-width: 768px) {
    .generator-container {
        flex-direction: column;
    }
    
    .input-section,
    .preview-section {
        max-width: 100%;
    }
    
    header h1 {
        font-size: 2rem;
    }
    
    .color-inputs {
        flex-direction: column;
    }
    
    .button-group {
        flex-direction: column;
    }
}

@media (max-width: 480px) {
    .container {
        padding: 1rem;
    }
    
    .input-section,
    .preview-container {
        padding: 1.5rem;
    }
    
    header h1 {
        font-size: 1.75rem;
    }
    
    .template-options {
        grid-template-columns: repeat(2, 1fr);
    }
}

/* SVG滤镜用于点状效果 */
.svg-filters {
    position: absolute;
    width: 0;
    height: 0;
    overflow: hidden;
}

/* 动画效果 */
@keyframes fadeIn {
    from { opacity: 0; transform: translateY(10px); }
    to { opacity: 1; transform: translateY(0); }
}

.fade-in {
    animation: fadeIn 0.5s ease-out;
}

/* 加载动画 */
@keyframes spin {
    to { transform: rotate(360deg); }
}

.loading {
    display: inline-block;
    animation: spin 1s linear infinite;
}