:root {
    --primary-color: #007AFF;
    --secondary-color: #5856D6;
    --success-color: #34C759;
    --warning-color: #FF9500;
    --danger-color: #FF3B30;
    --background-color: #FFFFFF;
    --text-color: #000000;
    --border-color: #E5E5EA;
    --card-background: #F2F2F7;
}

[data-theme="dark"] {
    --primary-color: #0A84FF;
    --secondary-color: #5E5CE6;
    --success-color: #30D158;
    --warning-color: #FF9F0A;
    --danger-color: #FF453A;
    --background-color: #000000;
    --text-color: #FFFFFF;
    --border-color: #38383A;
    --card-background: #1C1C1E;
}

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

body {
    font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
    background-color: var(--background-color);
    color: var(--text-color);
    line-height: 1.6;
    transition: background-color 0.3s, color 0.3s;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 20px;
}

.navbar {
    background-color: var(--card-background);
    padding: 15px 0;
    box-shadow: 0 2px 4px rgba(0,0,0,0.1);
}

.navbar-brand {
    display: flex;
    align-items: center;
    text-decoration: none;
    color: var(--text-color);
}

.navbar-brand img {
    height: 40px;
    margin-right: 10px;
}

.card {
    background-color: var(--card-background);
    border-radius: 10px;
    padding: 20px;
    margin-bottom: 20px;
    box-shadow: 0 2px 4px rgba(0,0,0,0.1);
}

.btn {
    display: inline-block;
    padding: 10px 20px;
    border-radius: 8px;
    border: none;
    cursor: pointer;
    font-size: 16px;
    transition: all 0.3s;
}

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

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

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

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

.form-group {
    margin-bottom: 20px;
}

.form-control {
    width: 100%;
    padding: 10px;
    border: 1px solid var(--border-color);
    border-radius: 8px;
    background-color: var(--background-color);
    color: var(--text-color);
}

.table {
    width: 100%;
    border-collapse: collapse;
    margin-bottom: 20px;
}

.table th,
.table td {
    padding: 12px;
    text-align: left;
    border-bottom: 1px solid var(--border-color);
}

.theme-switch {
    position: fixed;
    bottom: 20px;
    right: 20px;
    z-index: 1000;
}

.theme-switch button {
    width: 50px;
    height: 50px;
    border-radius: 50%;
    border: none;
    background-color: var(--primary-color);
    color: white;
    cursor: pointer;
    box-shadow: 0 2px 4px rgba(0,0,0,0.2);
}

.alert {
    padding: 15px;
    border-radius: 8px;
    margin-bottom: 20px;
}

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

.alert-danger {
    background-color: var(--danger-color);
    color: white;
}

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

.modal {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0,0,0,0.5);
    z-index: 1000;
}

.modal-content {
    position: relative;
    background-color: var(--background-color);
    margin: 15% auto;
    padding: 20px;
    border-radius: 10px;
    max-width: 500px;
}

.close {
    position: absolute;
    right: 20px;
    top: 10px;
    font-size: 24px;
    cursor: pointer;
}

.stats-card {
    text-align: center;
    padding: 20px;
}

.stats-card h3 {
    font-size: 24px;
    margin-bottom: 10px;
}

.stats-card p {
    font-size: 36px;
    font-weight: bold;
    color: var(--primary-color);
}

@media (max-width: 768px) {
    .container {
        padding: 10px;
    }
    
    .navbar {
        padding: 10px 0;
    }
    
    .navbar-brand {
        font-size: 14px;
    }
    
    .navbar-brand img {
        height: 30px;
    }
    
    .card {
        padding: 15px;
    }
    
    .table {
        display: block;
        overflow-x: auto;
        white-space: nowrap;
    }
    
    .table th,
    .table td {
        padding: 8px;
        font-size: 14px;
    }
    
    .btn {
        padding: 8px 15px;
        font-size: 14px;
    }
    
    .form-group {
        margin-bottom: 15px;
    }
    
    .form-control {
        padding: 8px;
        font-size: 14px;
    }
    
    .alert {
        padding: 10px;
        font-size: 14px;
    }
    
    .stats-card {
        padding: 15px;
    }
    
    .stats-card h3 {
        font-size: 16px;
    }
    
    .stats-card p {
        font-size: 24px;
    }
    
    .modal-content {
        margin: 10% auto;
        width: 90%;
        padding: 15px;
    }
    
    .theme-switch button {
        width: 40px;
        height: 40px;
    }
    
    .btn-group {
        display: flex;
        flex-direction: column;
        gap: 10px;
    }
    
    .btn-group .btn {
        width: 100%;
    }
    
    .record-details p {
        margin: 5px 0;
        font-size: 14px;
    }
    
    .review-form {
        margin-top: 20px;
    }
}

/* 添加响应式表格样式 */
.table-responsive {
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
    margin-bottom: 1rem;
}

/* 改进表单样式 */
.form-control:focus {
    border-color: var(--primary-color);
    box-shadow: 0 0 0 0.2rem rgba(0, 122, 255, 0.25);
}

select.form-control {
    appearance: none;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' fill='%23000' viewBox='0 0 16 16'%3E%3Cpath d='M7.247 11.14L2.451 5.658C1.885 5.013 2.345 4 3.204 4h9.592a1 1 0 0 1 .753 1.659l-4.796 5.48a1 1 0 0 1-1.506 0z'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 0.75rem center;
    background-size: 12px;
    padding-right: 2rem;
}

/* 改进卡片样式 */
.card {
    transition: transform 0.2s, box-shadow 0.2s;
}

.card:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 8px rgba(0,0,0,0.1);
}

/* 改进按钮样式 */
.btn {
    position: relative;
    overflow: hidden;
}

.btn::after {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 0;
    height: 0;
    background: rgba(255,255,255,0.2);
    border-radius: 50%;
    transform: translate(-50%, -50%);
    transition: width 0.3s, height 0.3s;
}

.btn:active::after {
    width: 200%;
    height: 200%;
}

/* 改进导航栏样式 */
.navbar {
    position: sticky;
    top: 0;
    z-index: 1000;
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
}

/* 改进主题切换按钮样式 */
.theme-switch button {
    transition: transform 0.3s;
}

.theme-switch button:hover {
    transform: rotate(180deg);
}

/* 改进表格样式 */
.table th {
    background-color: var(--card-background);
    position: sticky;
    top: 0;
    z-index: 1;
}

/* 改进统计卡片样式 */
.stats-card {
    text-align: center;
    border-radius: 15px;
    transition: all 0.3s;
}

.stats-card:hover {
    transform: translateY(-5px);
    box-shadow: 0 8px 16px rgba(0,0,0,0.1);
}

/* 改进警告框样式 */
.alert {
    border-radius: 10px;
    border: none;
    box-shadow: 0 2px 4px rgba(0,0,0,0.1);
}

/* 改进模态框样式 */
.modal-content {
    border-radius: 15px;
    box-shadow: 0 10px 20px rgba(0,0,0,0.2);
}

/* 改进表单组样式 */
.form-group label {
    font-weight: 500;
    margin-bottom: 5px;
    display: block;
}

/* 改进按钮组样式 */
.btn-group {
    display: flex;
    gap: 10px;
    flex-wrap: wrap;
}

.btn-group .btn {
    display: flex;
    align-items: center;
    gap: 8px;
    padding: 12px 20px;
    font-weight: 500;
    transition: all 0.3s ease;
}

.btn-group .btn i {
    font-size: 1.1em;
}

.btn-group .btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 8px rgba(0,0,0,0.1);
}

/* 改进记录详情样式 */
.record-details {
    background-color: var(--card-background);
    padding: 20px;
    border-radius: 10px;
    margin-bottom: 20px;
}

.record-details .form-group {
    margin-bottom: 15px;
}

.record-details label {
    font-weight: 500;
    color: var(--text-color);
    opacity: 0.8;
}

.record-details p {
    margin: 5px 0;
    padding: 8px;
    background-color: var(--background-color);
    border-radius: 5px;
}

/* 管理员可见内容样式 */
.admin-only {
    color: var(--primary-color);
    font-weight: 500;
}

.text-muted {
    color: var(--text-color);
    opacity: 0.6;
}

/* 改进表格中的按钮样式 */
.btn-sm {
    padding: 6px 12px;
    font-size: 14px;
    border-radius: 6px;
}

/* 改进表格样式 */
.table td {
    vertical-align: middle;
}

/* 添加图标字体 */
@import url('https://cdnjs.cloudflare.com/ajax/libs/font-awesome/5.15.4/css/all.min.css');