/* 全局样式 */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Comic Sans MS', 'Microsoft YaHei', sans-serif;
    background-color: #f0f8ff;
    background-image: 
        radial-gradient(circle at 10% 20%, rgba(22, 160, 133, 0.1) 0%, rgba(22, 160, 133, 0) 90%),
        radial-gradient(circle at 90% 80%, rgba(52, 152, 219, 0.1) 0%, rgba(52, 152, 219, 0) 90%);
    color: #333;
    line-height: 1.6;
    padding: 20px;
    background-attachment: fixed;
}

.container {
    max-width: 800px;
    margin: 0 auto;
    background-color: white;
    border-radius: 20px;
    box-shadow: 0 8px 30px rgba(0, 0, 0, 0.1);
    overflow: hidden;
    border: 3px solid #3498db;
}

/* 头部样式 */
header {
    background: linear-gradient(135deg, #3498db, #2980b9);
    color: white;
    text-align: center;
    padding: 30px 20px;
    position: relative;
    overflow: hidden;
}

header::before {
    content: '';
    position: absolute;
    top: -50px;
    left: -50px;
    width: 150px;
    height: 150px;
    background-image: url('data:image/svg+xml;base64,PHN2ZyB4bWxucz0iaHR0cDovL3d3dy53My5vcmcvMjAwMC9zdmciIHZpZXdCb3g9IjAgMCAxMDAgMTAwIj48cGF0aCBmaWxsPSIjZmZmIiBkPSJNMTAsMjBDMTAsMTQuNDggMTQuNDgsMTAgMjAsMTBMMzAsMTBDMzUuNTIsMTAgNDAgMTQuNDggNDAgMjBDNDAgMjUuNTIgMzUuNTIsMzAgMzAsMzBMMjAsMzBDMTQuNDgsMzAgMTAsMjUuNTIgMTAsMjBaIi8+PHBhdGggZmlsbD0iI2ZmZiIgZD0iTTkwLDIwQzkwLDE0LjQ4IDg1LjUyLDEwIDgwLDEwTDcxLDEwQzc2LjUyLDEwIDgwLDE0LjQ4IDgwLDIwQzg1LjUyLDIwIDkwLDI1LjUyIDkwLDIwWiIvPjxwYXRoIGZpbGw9IiNmZmYiIGQ9Ik0xMCw4MEMxMCw4NS41MiAxNC40OCw5MCAyMCw5MEwzMCw5MEMzNS41Miw5MCA0MCw4NS41MiA0MCw4MEM0MCw3NC40OCAzNS41Miw3MCAzMCw3MEwyMCw3MEMxNC40OCw3MCAxMCw3NC40OCAxMCw4MFoiLz48cGF0aCBmaWxsPSIjZmZmIiBkPSJNOTAsODBDOTAsODUuNTIgODUuNTIsOTAgODAsOTBMMTEsOTBDMTYuNTIsOTAgMjAsODUuNTIgMjAsODBDMjAsNzQuNDggMTYuNTIsNzAgMTEsNzBMMTAsNzBDNC40OCw3MCAwLDc0LjQ4IDAsODBDMCw4NS41MiA0LjQ4LDkwIDEwLDkwTDkwLDkwQzk1LjUyLDkwIDEwMCw4NS41MiAxMDAsODBDMTAwLDc0LjQ4IDk1LjUyLDcwIDkwLDcwTDkwLDgwWiIvPjxwYXRoIGZpbGw9IiMwZDM0NTkiIGQ9Ik0yMCw0M0wzMCw0M0MzMy4zMSw0MyAzNSw0MC4zMSAzNSw0MFMzMy4zMSw0MCAzMCw0MEwyMCw0MFMyMCwzMC4zMSAyMCwzMFMyMCw0MCAyMCw0M1oiLz48cGF0aCBmaWxsPSIjMGQzNDU5IiBkPSJNNzAsNDNMNzUsNDNDNzguMzEsNDMgODAsNDAuMzEgODAsMzBHMCAzMCAwLDQwIDAsNTBDMCw2MCAzMCw5MCAxMDAsOTBHMTAwLDQwIDgwLDQwLjMxIDgwLDQzTDc1LDQzTDcwLDQzWiIvPjwvc3ZnPg==');
    background-size: contain;
    background-repeat: no-repeat;
    opacity: 0.2;
}

header::after {
    content: '';
    position: absolute;
    bottom: -50px;
    right: -50px;
    width: 150px;
    height: 150px;
    background-image: url('data:image/svg+xml;base64,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');
    background-size: contain;
    background-repeat: no-repeat;
    opacity: 0.2;
}

header h1 {
    font-size: 2.5rem;
    margin-bottom: 10px;
    position: relative;
    text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.3);
}

header p {
    font-size: 1.2rem;
    position: relative;
    text-shadow: 1px 1px 2px rgba(0, 0, 0, 0.3);
}

/* 主要内容样式 */
main {
    padding: 30px;
}

/* 积分显示区域 */
.points-display {
    text-align: center;
    margin-bottom: 40px;
}

.points-circle {
    background: linear-gradient(135deg, #3498db, #2ecc71);
    color: white;
    width: 200px;
    height: 200px;
    border-radius: 50%;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    margin: 0 auto;
    box-shadow: 0 8px 25px rgba(0, 0, 0, 0.2);
    position: relative;
    overflow: hidden;
}

.points-circle::before {
    content: '';
    position: absolute;
    width: 100%;
    height: 100%;
    background-image: url('data:image/svg+xml;base64,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');
    background-repeat: repeat;
    opacity: 0.1;
}

.points-circle h2 {
    font-size: 1.5rem;
    margin-bottom: 10px;
    position: relative;
}

.points-value {
        font-size: 6rem;
        font-weight: bold;
        position: relative;
        text-shadow: 2px 2px 4px rgba(0, 0, 0, 0.3);
    }

/* 积分控制区域 */
.points-control {
    background-color: #f8f9fa;
    border-radius: 15px;
    padding: 25px;
    margin-bottom: 40px;
    border: 2px solid #e1e8ed;
}

.points-control h3 {
    color: #2980b9;
    margin-bottom: 20px;
    font-size: 1.8rem;
    text-align: center;
}

.control-panel {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.input-group {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.input-group label {
    font-weight: bold;
    color: #2c3e50;
}

.input-group input {
    padding: 12px;
    border: 2px solid #ddd;
    border-radius: 8px;
    font-size: 1rem;
    transition: border-color 0.3s;
}

.input-group input:focus {
    outline: none;
    border-color: #3498db;
}

.buttons {
    display: flex;
    gap: 15px;
    justify-content: center;
}

.btn {
    padding: 12px 24px;
    border: none;
    border-radius: 8px;
    font-size: 1.1rem;
    font-weight: bold;
    cursor: pointer;
    transition: all 0.3s;
    position: relative;
    overflow: hidden;
}

.btn::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 0;
    height: 0;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.3);
    transform: translate(-50%, -50%);
    transition: width 0.6s, height 0.6s;
}

.btn:active::before {
    width: 300px;
    height: 300px;
}

.btn-add {
    background: linear-gradient(135deg, #2ecc71, #27ae60);
    color: white;
}

.btn-add:hover {
    background: linear-gradient(135deg, #27ae60, #229954);
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(46, 204, 113, 0.3);
}

.btn-subtract {
    background: linear-gradient(135deg, #e74c3c, #c0392b);
    color: white;
}

.btn-subtract:hover {
    background: linear-gradient(135deg, #c0392b, #a93226);
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(231, 76, 60, 0.3);
}

/* 积分记录区域 */
.points-history {
    background-color: #f8f9fa;
    border-radius: 15px;
    padding: 25px;
    border: 2px solid #e1e8ed;
}

.points-history h3 {
    color: #2980b9;
    margin-bottom: 20px;
    font-size: 1.8rem;
    text-align: center;
}

.history-list {
    max-height: 300px;
    overflow-y: auto;
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.history-item {
    background-color: white;
    border-radius: 8px;
    padding: 15px;
    box-shadow: 0 2px 6px rgba(0, 0, 0, 0.1);
    border-left: 4px solid #3498db;
    transition: transform 0.2s, box-shadow 0.2s;
}

.history-item:hover {
    transform: translateX(5px);
    box-shadow: 0 4px 10px rgba(0, 0, 0, 0.15);
}

.history-item.positive {
    border-left-color: #2ecc71;
}

.history-item.negative {
    border-left-color: #e74c3c;
}

.history-item-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 8px;
}

.history-points {
    font-size: 1.3rem;
    font-weight: bold;
}

.history-points.positive {
    color: #2ecc71;
}

.history-points.negative {
    color: #e74c3c;
}

.history-time {
    font-size: 0.9rem;
    color: #7f8c8d;
}

.history-note {
    color: #2c3e50;
    font-size: 1rem;
}

.no-history {
    text-align: center;
    color: #7f8c8d;
    font-style: italic;
    padding: 40px 20px;
}

/* 底部样式 */
footer {
    background-color: #2c3e50;
    color: white;
    text-align: center;
    padding: 20px;
}

/* 响应式设计 */
@media (max-width: 768px) {
    body {
        padding: 10px;
    }

    .container {
        border-radius: 15px;
    }

    header h1 {
        font-size: 2rem;
    }

    .points-circle {
        width: 150px;
        height: 150px;
    }

    .points-value {
        font-size: 3rem;
    }

    .buttons {
        flex-direction: column;
    }

    .btn {
        width: 100%;
    }
}

/* 滚动条样式 */
.history-list::-webkit-scrollbar {
    width: 8px;
}

.history-list::-webkit-scrollbar-track {
    background: #f1f1f1;
    border-radius: 4px;
}

.history-list::-webkit-scrollbar-thumb {
    background: #888;
    border-radius: 4px;
}

.history-list::-webkit-scrollbar-thumb:hover {
    background: #555;
}