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

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', 'Roboto', 'Helvetica Neue', Arial, 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', 'Noto Sans CJK SC', sans-serif;
    background: #e3f2fd;
    color: #2c3e50;
    line-height: 1.7;
    font-size: 15px;
    min-height: 100vh;
    position: relative;
    font-weight: 400;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    text-rendering: optimizeLegibility;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    background: rgba(255, 255, 255, 0.98);
    min-height: 100vh;
    box-shadow: 0 20px 60px rgba(0, 0, 0, 0.1);
    backdrop-filter: blur(20px);
    border-radius: 0 0 30px 30px;
    border: 1px solid rgba(255, 255, 255, 0.3);
    position: relative;
    overflow: hidden;
}

.container::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 1px;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.8), transparent);
}

/* 头部样式 */
header {
    background: linear-gradient(135deg, #788deb 0%, #9c73c5 50%, #e397eb 100%);
    color: white;
    padding: 2rem 2rem 1.5rem;
    box-shadow: 0 8px 32px rgba(102, 126, 234, 0.2);
    border-radius: 0 0 30px 30px;
    position: relative;
    overflow: hidden;
}

header::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(45deg, rgba(255, 255, 255, 0.1) 0%, transparent 50%, rgba(255, 255, 255, 0.05) 100%);
    pointer-events: none;
}

header h1 {
    margin-bottom: 1rem;
    font-size: 2.6rem;
    text-align: center;
    font-weight: 600;
    letter-spacing: 3px;
    text-shadow: 0 4px 8px rgba(0, 0, 0, 0.15);
    position: relative;
    z-index: 1;
    background: linear-gradient(135deg, #ffffff 0%, #f8f9fa 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    font-family: 'Inter', sans-serif;
}

/* 欢迎信息样式 */
.welcome-message {
    display: flex;
    align-items: center;
}

.welcome-message span {
    background: rgba(255,255,255,0.2);
    border: 1px solid rgba(255,255,255,0.3);
    color: white;
    padding: 0.8rem 1.5rem;
    border-radius: 30px;
    font-size: 0.95rem;
    font-weight: 500;
    text-shadow: 0 2px 4px rgba(0, 0, 0, 0.2);
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    cursor: default;
}

nav {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 1rem;
    position: relative;
    z-index: 1;
}

.nav-btn {
    background: rgba(255,255,255,0.2);
    border: 1px solid rgba(255,255,255,0.3);
    color: white;
    padding: 0.8rem 1.5rem;
    border-radius: 30px;
    cursor: pointer;
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    font-size: 0.95rem;
    font-weight: 500;
    letter-spacing: 0.8px;
    backdrop-filter: blur(10px);
    position: relative;
    overflow: hidden;
    font-family: 'Inter', sans-serif;
    text-transform: uppercase;
    font-size: 0.85rem;
}

.nav-btn::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.2), transparent);
    transition: left 0.5s;
}

.nav-btn:hover::before {
    left: 100%;
}

.nav-btn:hover {
    background: rgba(255,255,255,0.25);
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(0,0,0,0.15);
}

.nav-btn.active {
    background: rgba(255,255,255,0.3);
    font-weight: 600;
    box-shadow: 0 4px 12px rgba(0,0,0,0.2);
}

/* 主要内容区域 */
main {
    padding: 2rem;
}

.section {
    display: none;
}

.section.active {
    display: block;
}

.section-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 2rem;
    flex-wrap: wrap;
    gap: 1rem;
}

.section-header h2 {
    color: #2c3e50;
    font-size: 1.8rem;
    font-weight: 300;
    letter-spacing: 0.5px;
}

.filters {
    display: flex;
    gap: 1rem;
    align-items: center;
    flex-wrap: wrap;
}

/* 按钮样式 */
.btn {
    padding: 0.8rem 1.5rem;
    border: none;
    border-radius: 12px;
    cursor: pointer;
    font-size: 0.9rem;
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    text-decoration: none;
    display: inline-block;
    text-align: center;
    font-weight: 500;
    letter-spacing: 0.8px;
    box-shadow: 0 4px 15px rgba(0,0,0,0.1);
    position: relative;
    overflow: hidden;
    backdrop-filter: blur(10px);
    font-family: 'Inter', sans-serif;
    text-transform: uppercase;
    font-size: 0.85rem;
}

.btn::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255, 255, 255, 0.2), transparent);
    transition: left 0.5s;
}

.btn:hover::before {
    left: 100%;
}

.btn-primary {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
}

.btn-primary:hover {
    background: linear-gradient(135deg, #5a6fd8 0%, #6a4190 100%);
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(102, 126, 234, 0.3);
}

.btn-secondary {
    background: linear-gradient(135deg, #95a5a6 0%, #7f8c8d 100%);
    color: white;
}

.btn-secondary:hover {
    background: linear-gradient(135deg, #7f8c8d 0%, #6c7b7d 100%);
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(127, 140, 141, 0.3);
}

.btn-danger {
    background: linear-gradient(135deg, #e74c3c 0%, #c0392b 100%);
    color: white;
}

.btn-danger:hover {
    background: linear-gradient(135deg, #c0392b 0%, #a93226 100%);
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(231, 76, 60, 0.3);
}

.btn-warning {
    background: linear-gradient(135deg, #f39c12 0%, #e67e22 100%);
    color: white;
}

.btn-warning:hover {
    background: linear-gradient(135deg, #e67e22 0%, #d35400 100%);
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(243, 156, 18, 0.3);
}

/* 首页卡片 */
.dashboard-cards {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 2rem;
    margin-bottom: 2rem;
}

.card {
    background: rgba(255, 255, 255, 0.95);
    padding: 2.5rem 2rem;
    border-radius: 20px;
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.08);
    text-align: center;
    transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
    backdrop-filter: blur(20px);
    border: 1px solid rgba(255, 255, 255, 0.3);
    position: relative;
    overflow: hidden;
}

.card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: linear-gradient(90deg, #667eea, #764ba2, #f093fb);
    opacity: 0;
    transition: opacity 0.3s ease;
}

.card:hover::before {
    opacity: 1;
}

.card:hover {
    transform: translateY(-8px);
    box-shadow: 0 16px 48px rgba(0, 0, 0, 0.15);
}

.card h3 {
    color: #6c757d;
    margin-bottom: 1.2rem;
    font-size: 1.15rem;
    font-weight: 500;
    letter-spacing: 1px;
    font-family: 'Inter', sans-serif;
    text-transform: uppercase;
    font-size: 0.9rem;
}

.card span {
    font-size: 3.2rem;
    font-weight: 600;
    color: #2c3e50;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 50%, #f093fb 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    font-family: 'Inter', sans-serif;
    letter-spacing: -1px;
}

/* 表格样式 */
.table-container {
    background: rgba(255, 255, 255, 0.95);
    border-radius: 20px;
    overflow: hidden;
    box-shadow: 0 15px 50px rgba(0, 0, 0, 0.08);
    backdrop-filter: blur(20px);
    border: 1px solid rgba(255, 255, 255, 0.3);
    position: relative;
}

.table-container::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 1px;
    background: linear-gradient(90deg, transparent, rgba(102, 126, 234, 0.3), transparent);
}

table {
    width: 100%;
    border-collapse: collapse;
}

th, td {
    padding: 1.2rem;
    text-align: left;
    border-bottom: 1px solid rgba(0, 0, 0, 0.05);
    color: #2c3e50 !important;
}

th {
    background: linear-gradient(135deg, #f8f9fa 0%, #e9ecef 100%);
    font-weight: 600;
    color: #2c3e50 !important;
    font-size: 0.9rem;
    letter-spacing: 1px;
    font-family: 'Inter', sans-serif;
    text-transform: uppercase;
    font-size: 0.8rem;
}

tr:hover {
    background: rgba(102, 126, 234, 0.05);
    transition: all 0.3s ease;
}

/* 状态标签 */
.status {
    padding: 0.3rem 0.8rem;
    border-radius: 15px;
    font-size: 0.8rem;
    font-weight: 500;
}

.status.active {
    background: #d4edda;
    color: #155724;
}

.status.inactive {
    background: #f8d7da;
    color: #721c24;
}

.status.present {
    background: #d4edda;
    color: #155724;
}

.status.absent {
    background: #f8d7da;
    color: #721c24;
}

.status.late {
    background: #fff3cd;
    color: #856404;
}

.status.early_leave {
    background: #d1ecf1;
    color: #0c5460;
}

/* 分数显示样式 */
.score-change {
    font-weight: bold;
    padding: 0.2rem 0.5rem;
    border-radius: 3px;
}

.score-change.positive {
    background: #d4edda;
    color: #155724;
}

.score-change.negative {
    background: #f8d7da;
    color: #721c24;
}

.score-display {
    font-weight: bold;
    font-size: 1.1rem;
}

.score-display.positive {
    color: #28a745;
}

.score-display.negative {
    color: #dc3545;
}

/* 成功按钮样式 */
.btn-success {
    background: #28a745;
    color: white;
}

.btn-success:hover {
    background: #218838;
}

/* 信息按钮样式 */
.btn-info {
    background: #17a2b8;
    color: white;
}

.btn-info:hover {
    background: #138496;
}

/* 表单文本样式 */
.form-text {
    display: block;
    margin-top: 0.25rem;
    font-size: 0.875rem;
    color: #6c757d;
}

/* 文件输入样式 */
input[type="file"] {
    width: 100%;
    padding: 0.5rem;
    border: 2px solid #e9ecef;
    border-radius: 5px;
    background: white;
}

input[type="file"]:focus {
    outline: none;
    border-color: #667eea;
}

/* 部门统计样式 */
.department-stats {
    margin-top: 2rem;
    padding: 2rem;
    background: rgba(255, 255, 255, 0.9);
    border-radius: 20px;
    box-shadow: 0 8px 32px rgba(0, 0, 0, 0.1);
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.2);
}

.department-stats h3 {
    margin: 0 0 2rem 0;
    color: #2c3e50;
    font-size: 1.4rem;
    font-weight: 300;
    letter-spacing: 0.5px;
    text-align: center;
}

.department-stats-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 1rem;
}

.department-card {
    background: rgba(255, 255, 255, 0.8);
    border: 1px solid rgba(255, 255, 255, 0.3);
    border-radius: 16px;
    padding: 1.5rem;
    transition: all 0.3s ease;
    backdrop-filter: blur(10px);
    box-shadow: 0 4px 16px rgba(0, 0, 0, 0.05);
}

.department-card:hover {
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.1);
    transform: translateY(-4px);
    background: rgba(255, 255, 255, 0.95);
}

.department-card h4 {
    margin: 0 0 1rem 0;
    color: #2c3e50;
    font-size: 1.15rem;
    font-weight: 600;
    letter-spacing: 1px;
    text-align: center;
    font-family: 'Inter', sans-serif;
    text-transform: uppercase;
    font-size: 0.9rem;
}

.department-metrics {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 0.5rem;
    margin-top: 0.5rem;
}

.metric {
    text-align: center;
    padding: 0.8rem;
    background: rgba(255, 255, 255, 0.6);
    border-radius: 12px;
    border: 1px solid rgba(255, 255, 255, 0.3);
    transition: all 0.3s ease;
}

.metric:hover {
    background: rgba(255, 255, 255, 0.8);
    transform: translateY(-2px);
}

.metric-label {
    font-size: 1 rem;
    color: #6c757d;
    margin-bottom: 0.3rem;
    font-weight: 500;
    letter-spacing: 0.8px;
    font-family: 'Inter', sans-serif;
    text-transform: uppercase;
}

.metric-value {
    font-size: 1.4rem;
    font-weight: 600;
    color: #2c3e50;
    font-family: 'Inter', sans-serif;
    letter-spacing: -0.5px;
}

.metric-value.positive {
    color: #27ae60;
    font-weight: 500;
}

.metric-value.negative {
    color: #e74c3c;
    font-weight: 500;
}

/* 登录相关样式 */
.login-modal {
    max-width: 400px;
    margin: 10% auto;
}

.user-info {
    position: fixed;
    top: 20px;
    right: 20px;
    background: rgba(255, 255, 255, 0.9);
    padding: 0.8rem 1.2rem;
    border-radius: 25px;
    box-shadow: 0 4px 16px rgba(0, 0, 0, 0.1);
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.2);
    display: flex;
    align-items: center;
    gap: 1rem;
    z-index: 1000;
}

.user-info span {
    color: #2c3e50;
    font-weight: 500;
}

/* 权限控制样式 */
.readonly-mode {
    opacity: 0.6;
    pointer-events: none;
}

/* readonly输入框样式 */
.form-group input[readonly] {
    background-color: #f8f9fa;
    color: #6c757d;
    cursor: not-allowed;
    opacity: 0.8;
}

.form-group input[readonly]:hover {
    border-color: #e9ecef;
    background-color: #f8f9fa;
    box-shadow: none;
    transform: none;
}

/* 模态框样式 */
.modal {
    display: none;
    position: fixed;
    z-index: 1000;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0,0,0,0.5);
    animation: fadeIn 0.3s ease;
}

.modal-content {
    background-color: white;
    margin: 5% auto;
    padding: 0;
    border-radius: 10px;
    width: 90%;
    max-width: 600px;
    max-height: 90vh;
    overflow-y: auto;
    animation: slideIn 0.3s ease;
}

.modal-header {
    background: #667eea;
    color: white;
    padding: 1.5rem;
    border-radius: 10px 10px 0 0;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.modal-header h3 {
    margin: 0;
}

.close {
    font-size: 2rem;
    cursor: pointer;
    transition: opacity 0.3s ease;
}

.close:hover {
    opacity: 0.7;
}

/* 表单样式 */
form {
    padding: 2rem;
}

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

.form-group label {
    display: block;
    margin-bottom: 0.5rem;
    font-weight: 500;
    color: #333;
    font-family: 'Inter', sans-serif;
    letter-spacing: 0.5px;
    text-transform: uppercase;
    font-size: 0.85rem;
}

.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;
    padding: 0.8rem;
    border: 2px solid #e9ecef;
    border-radius: 8px;
    font-size: 0.95rem;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    font-family: 'Inter', sans-serif;
    font-weight: 400;
    letter-spacing: 0.3px;
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: none;
    border-color: #667eea;
    box-shadow: 0 0 0 3px rgba(102, 126, 234, 0.1);
    transform: translateY(-1px);
    background: rgba(255, 255, 255, 1);
}

/* 美化下拉框样式 */
select {
    appearance: none;
    -webkit-appearance: none;
    -moz-appearance: none;
    background-image: url("data:image/svg+xml;charset=UTF-8,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%23667eea' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3e%3cpolyline points='6,9 12,15 18,9'%3e%3c/polyline%3e%3c/svg%3e");
    background-repeat: no-repeat;
    background-position: right 12px center;
    background-size: 16px;
    padding-right: 40px;
    cursor: pointer;
    position: relative;
}

select:hover {
    border-color: #667eea;
    background-color: rgba(255, 255, 255, 1);
    box-shadow: 0 4px 12px rgba(102, 126, 234, 0.15);
    transform: translateY(-1px);
}

/* 为所有输入框添加悬停效果 */
.form-group input:hover,
.form-group textarea:hover {
    border-color: #667eea;
    background-color: rgba(255, 255, 255, 1);
    box-shadow: 0 2px 8px rgba(102, 126, 234, 0.1);
    transform: translateY(-1px);
}

/* 统一日期输入框样式，使其与下拉框保持一致 */
input[type="date"],
input[type="month"] {
    appearance: none;
    -webkit-appearance: none;
    -moz-appearance: none;
    background-image: url("data:image/svg+xml;charset=UTF-8,%3csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 24 24' fill='none' stroke='%23667eea' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3e%3ccalendar%3e%3crect x='3' y='4' width='18' height='18' rx='2' ry='2'%3e%3c/rect%3e%3cline x1='16' y1='2' x2='16' y2='6'%3e%3c/line%3e%3cline x1='8' y1='2' x2='8' y2='6'%3e%3c/line%3e%3cline x1='3' y1='10' x2='21' y2='10'%3e%3c/line%3e%3c/calendar%3e%3c/svg%3e");
    background-repeat: no-repeat;
    background-position: right 12px center;
    background-size: 16px;
    padding-right: 40px;
    cursor: pointer;
    min-width: 150px;
    background-color: linear-gradient(135deg, rgba(255, 255, 255, 0.95) 0%, rgba(248, 249, 250, 0.95) 100%);
    border: 2px solid rgba(102, 126, 234, 0.1);
    border-radius: 12px;
    padding: 0.7rem 1rem;
    font-weight: 500;
    letter-spacing: 0.5px;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.05);
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

input[type="date"]:hover,
input[type="month"]:hover {
    border-color: rgba(102, 126, 234, 0.3);
    background: linear-gradient(135deg, rgba(255, 255, 255, 1) 0%, rgba(248, 249, 250, 1) 100%);
    box-shadow: 0 4px 16px rgba(102, 126, 234, 0.2);
    transform: translateY(-2px);
}

input[type="date"]:focus,
input[type="month"]:focus {
    border-color: #667eea;
    background: linear-gradient(135deg, rgba(255, 255, 255, 1) 0%, rgba(248, 249, 250, 1) 100%);
    box-shadow: 0 0 0 3px rgba(102, 126, 234, 0.2), 0 6px 20px rgba(102, 126, 234, 0.15);
    transform: translateY(-3px);
}

select:focus {
    border-color: #667eea;
    box-shadow: 0 0 0 3px rgba(102, 126, 234, 0.2), 0 4px 12px rgba(102, 126, 234, 0.15);
    transform: translateY(-2px);
}

/* 过滤器区域的下拉框和日期输入框特殊样式 */
.filters select,
.filters input[type="date"],
.filters input[type="month"] {
    min-width: 150px;
    background: linear-gradient(135deg, rgba(255, 255, 255, 0.95) 0%, rgba(248, 249, 250, 0.95) 100%);
    border: 2px solid rgba(102, 126, 234, 0.1);
    border-radius: 12px;
    padding: 0.7rem 1rem;
    font-weight: 500;
    letter-spacing: 0.5px;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.05);
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

.filters select:hover,
.filters input[type="date"]:hover,
.filters input[type="month"]:hover {
    border-color: rgba(102, 126, 234, 0.3);
    background: linear-gradient(135deg, rgba(255, 255, 255, 1) 0%, rgba(248, 249, 250, 1) 100%);
    box-shadow: 0 4px 16px rgba(102, 126, 234, 0.2);
    transform: translateY(-2px);
}

.filters select:focus,
.filters input[type="date"]:focus,
.filters input[type="month"]:focus {
    border-color: #667eea;
    background: linear-gradient(135deg, rgba(255, 255, 255, 1) 0%, rgba(248, 249, 250, 1) 100%);
    box-shadow: 0 0 0 3px rgba(102, 126, 234, 0.2), 0 6px 20px rgba(102, 126, 234, 0.15);
    transform: translateY(-3px);
}

/* 下拉框选项样式 */
select option {
    padding: 0.8rem;
    background: white;
    color: #2c3e50;
    font-weight: 500;
    border: none;
}

select option:hover {
    background: rgba(102, 126, 234, 0.1);
    color: #2c3e50;
}

select option:checked {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: rgb(156, 32, 32);
}

/* 确保下拉框文字在所有状态下都可见 */
select {
    color: #2c3e50 !important;
}

select:focus {
    color: #2c3e50 !important;
}

select:hover {
    color: #2c3e50 !important;
}

/* 通用文字颜色保护 - 确保所有文字都有足够对比度 */
* {
    color: inherit;
}

/* 强制确保重要文字元素的颜色 */
h1, h2, h3, h4, h5, h6,
p, span, div, td, th,
select, input, textarea,
button, .btn {
    color: #2c3e50 !important;
}

/* 特殊处理白色文字的情况 */
.nav-btn, .btn-primary, .btn-secondary, .btn-danger, .btn-warning, .btn-success, .btn-info {
    color: white !important;
}

/* 确保表格行悬停时文字仍然可见 */
tr:hover td {
    color: #2c3e50 !important;
}

.form-actions {
    display: flex;
    gap: 1rem;
    justify-content: flex-end;
    margin-top: 2rem;
}

/* 响应式设计 */
@media (max-width: 768px) {
    .container {
        margin: 0;
        box-shadow: none;
    }
    
    header {
        padding: 1rem;
    }
    
    nav {
        flex-direction: column;
        gap: 0.5rem;
    }
    
    .nav-btn {
        padding: 0.6rem 1rem;
    }
    
    main {
        padding: 1rem;
    }
    
    .section-header {
        flex-direction: column;
        align-items: flex-start;
    }
    
    .filters {
        width: 100%;
        justify-content: flex-start;
    }
    
    .dashboard-cards {
        grid-template-columns: 1fr;
    }
    
    .table-container {
        overflow-x: auto;
    }
    
    table {
        min-width: 600px;
    }
    
    .modal-content {
        width: 95%;
        margin: 2% auto;
    }
    
    form {
        padding: 1rem;
    }
}

/* 动画效果 */
@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

@keyframes slideIn {
    from { 
        opacity: 0;
        transform: translateY(-50px);
    }
    to { 
        opacity: 1;
        transform: translateY(0);
    }
}

/* 加载动画 */
.loading {
    display: inline-block;
    width: 20px;
    height: 20px;
    border: 3px solid #f3f3f3;
    border-top: 3px solid #667eea;
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

/* 版权信息样式 */
.footer {
    background: #9b8fc9;
    color: white;
    padding: 2rem 0;
    margin-top: 3rem;
    text-align: center;
    position: relative;
    overflow: hidden;
}

.footer::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: linear-gradient(45deg, rgba(255, 255, 255, 0.1) 0%, transparent 50%, rgba(255, 255, 255, 0.05) 100%);
    pointer-events: none;
}

.footer-content {
    position: relative;
    z-index: 1;
}

.footer-content p {
    margin: 0.5rem 0;
    font-size: 0.9rem;
    opacity: 0.9;
    font-weight: 300;
    letter-spacing: 1px;
    font-family: 'Inter', sans-serif;
}

.footer-content p:first-child {
    font-weight: 500;
    font-size: 1rem;
    letter-spacing: 1.2px;
}

/* 消息提示 - 浮窗样式 */
.message {
    position: fixed;
    top: 20px;
    right: 20px;
    padding: 0.8rem 1.2rem;
    border-radius: 8px;
    font-weight: 500;
    font-size: 0.9rem;
    z-index: 9999;
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.2);
    max-width: 300px;
    animation: slideInRight 0.3s ease, fadeOut 0.3s ease 2.7s forwards;
}

.message.success {
    background: rgba(40, 167, 69, 0.9);
    color: white;
}

.message.error {
    background: rgba(220, 53, 69, 0.9);
    color: white;
}

.message.info {
    background: rgba(23, 162, 184, 0.9);
    color: white;
}

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

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