/* 二维码生成器特定样式 */

/* 基础样式重置 */
* {
    box-sizing: border-box;
}

body {
    margin: 0;
    padding: 0;
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    line-height: 1.6;
    color: #333;
    background-color: #f8fafc;
}

/* 页面标题样式 */
.page-title {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    font-size: 2rem;
    font-weight: 700;
    color: #1f2937;
    margin: 0 0 0.5rem 0;
    text-align: center;
    justify-content: center;
}

.page-subtitle {
    text-align: center;
    color: #6b7280;
    font-size: 1.125rem;
    margin: 0 0 2rem 0;
}

/* 卡片样式 */
.card {
    background: white;
    border-radius: 12px;
    padding: 1.5rem;
    margin-bottom: 1.5rem;
    box-shadow: 0 1px 3px 0 rgba(0, 0, 0, 0.1), 0 1px 2px 0 rgba(0, 0, 0, 0.06);
    border: 1px solid #e5e7eb;
}

/* 分类标题样式 */
.category-title {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 1.25rem;
    font-weight: 600;
    color: #374151;
    margin: 0 0 1rem 0;
    padding-bottom: 0.5rem;
    border-bottom: 2px solid #f3f4f6;
}

/* 表单样式 */
.form-group {
    margin-bottom: 1rem;
}

.form-label {
    display: block;
    font-size: 0.875rem;
    font-weight: 500;
    color: #374151;
    margin-bottom: 0.5rem;
}

.form-input {
    width: 100%;
    padding: 0.75rem;
    border: 1px solid #d1d5db;
    border-radius: 6px;
    font-size: 0.875rem;
    transition: border-color 0.2s, box-shadow 0.2s;
    background-color: white;
}

.form-input:focus {
    outline: none;
    border-color: #3b82f6;
    box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.1);
}

.form-input::placeholder {
    color: #9ca3af;
}

/* 按钮样式 */
.btn-group {
    display: flex;
    gap: 0.75rem;
    justify-content: center;
    flex-wrap: wrap;
}

.btn {
    padding: 0.75rem 1.5rem;
    border: none;
    border-radius: 6px;
    font-size: 0.875rem;
    font-weight: 500;
    cursor: pointer;
    transition: all 0.2s;
    text-decoration: none;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-width: 120px;
}

.btn-primary {
    background: linear-gradient(135deg, #3b82f6, #1d4ed8);
    color: white;
}

.btn-primary:hover {
    background: linear-gradient(135deg, #2563eb, #1e40af);
    transform: translateY(-1px);
    box-shadow: 0 4px 12px rgba(59, 130, 246, 0.4);
}

.btn-secondary {
    background: #f3f4f6;
    color: #374151;
    border: 1px solid #d1d5db;
}

.btn-secondary:hover {
    background: #e5e7eb;
    transform: translateY(-1px);
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
}

/* 选项网格布局 */
.options-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 1rem;
    margin-bottom: 1.5rem;
}

/* 字符计数显示 */
.char-count {
    font-size: 0.875rem;
    color: var(--text-secondary);
    margin-top: 0.5rem;
    text-align: right;
}

/* 二维码结果区域 */
.qr-result {
    text-align: center;
    padding: 2rem;
}

.qr-result #qrcode {
    margin: 1.5rem 0;
    display: flex;
    justify-content: center;
    align-items: center;
}

.qr-result #qrcode canvas {
    border-radius: 8px;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
    max-width: 100%;
    height: auto;
}

/* 消息样式 */
.message {
    margin: 1rem 0;
    padding: 1rem;
    border-radius: 8px;
    border-left: 4px solid;
    animation: slideIn 0.3s ease-out;
}

.message-content {
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.message-content svg {
    flex-shrink: 0;
}

.error-message {
    background-color: #fef2f2;
    border-left-color: #ef4444;
    color: #dc2626;
}

.success-message {
    background-color: #f0fdf4;
    border-left-color: #22c55e;
    color: #16a34a;
}

/* 结果区域样式 */
.result-section {
    animation: fadeIn 0.5s ease-out;
}

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

@keyframes fadeIn {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* 响应式设计 */
@media (max-width: 768px) {
    .options-grid {
        grid-template-columns: 1fr;
    }
    
    .qr-result {
        padding: 1rem;
    }
    
    .qr-result #qrcode canvas {
        max-width: 280px;
    }
}

@media (max-width: 480px) {
    .char-count {
        text-align: left;
        margin-top: 0.25rem;
    }
    
    .qr-result #qrcode canvas {
        max-width: 240px;
    }
}

/* 深色模式支持 */
@media (prefers-color-scheme: dark) {
    .error-message {
        background-color: rgba(239, 68, 68, 0.1);
        color: #fca5a5;
    }
    
    .success-message {
        background-color: rgba(34, 197, 94, 0.1);
        color: #86efac;
    }
    
    .qr-result #qrcode canvas {
        box-shadow: 0 4px 12px rgba(0, 0, 0, 0.3);
    }
}

/* 打印样式 */
@media print {
    .btn-group,
    .message {
        display: none;
    }
    
    .qr-result {
        page-break-inside: avoid;
    }
    
    .qr-result #qrcode canvas {
        box-shadow: none;
    }
}