:root {
    --primary-color: #ff8c8c;
    --primary-light: #ffa8a8;
    --primary-dark: #e67373;
    --secondary-color: #ffb86c;
    --accent-color: #ff6c9d;
    --light-bg: #fff0f5;
    --light-card: #ffffff;
    --light-text: #374151;
    --light-border: #ffd1dc;
    --success-color: #7ed957;
    --warning-color: #ffbd59;
    --error-color: #ff6b6b;
    --shadow: 0 2px 6px rgba(255, 140, 140, 0.1);
}

body {
    background-color: var(--light-bg);
    background-image: 
        radial-gradient(circle at 10% 20%, rgba(255, 182, 193, 0.1) 0%, transparent 20%),
        radial-gradient(circle at 90% 80%, rgba(255, 182, 193, 0.1) 0%, transparent 20%);
}

.login-container {
    background-color: var(--light-bg);
    background-image: 
        radial-gradient(circle at 10% 20%, rgba(255, 182, 193, 0.15) 0%, transparent 20%),
        radial-gradient(circle at 90% 80%, rgba(255, 182, 193, 0.15) 0%, transparent 20%);
}

.student-grid {
    display: grid;
    grid-template-columns: repeat(5, 1fr);
    gap: 8px;
    margin-top: 15px;
}

.student-item {
    padding: 10px 6px;
    background: #ffffff;
    border-radius: 8px;
    text-align: center;
    cursor: pointer;
    transition: all 0.2s;
    border: 1px solid #ffe4e9;
    position: relative;
    font-weight: 500;
    font-size: 0.9rem;
}

.student-item:hover {
    transform: translateY(-2px);
    border-color: var(--primary-color);
    box-shadow: var(--shadow);
}

.student-item.checked {
    background: #f0fff4;
    border-color: var(--success-color);
    color: #234e52;
}

.student-item.late {
    background: #fffaf0;
    border-color: var(--warning-color);
    color: #744210;
}

.student-item.absent {
    background: #fff5f5;
    border-color: var(--error-color);
    color: #822727;
}

.status-badge {
    position: absolute;
    top: 6px;
    right: 6px;
    width: 10px;
    height: 10px;
    border-radius: 50%;
}

.status-badge.on-time {
    background-color: var(--success-color);
}

.status-badge.late {
    background-color: var(--warning-color);
}

.leaderboard, .recent-checkins {
    list-style-type: none;
    max-height: 300px;
    overflow-y: auto;
}

.leaderboard li, .recent-checkins li {
    padding: 12px 15px;
    border-bottom: 1px solid var(--light-border);
    display: flex;
    justify-content: space-between;
    align-items: center;
    transition: background-color 0.2s;
}

.leaderboard li:hover, .recent-checkins li:hover {
    background-color: #fff0f5;
}

.leaderboard li:nth-child(1) {
    background-color: #fffaf0;
    font-weight: 600;
    border-left: 3px solid var(--warning-color);
}

.leaderboard li:nth-child(2),
.leaderboard li:nth-child(3) {
    background-color: #fff8f8;
    border-left: 3px solid var(--accent-color);
}

.rank {
    font-weight: bold;
    color: var(--primary-color);
    width: 25px;
    display: inline-block;
}

.time {
    color: #6b7280;
    font-size: 0.85rem;
}

.primary-btn {
    background: var(--primary-color);
    color: white;
    border: none;
    padding: 14px 20px;
    border-radius: 10px;
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: background-color 0.2s;
    width: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
}

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

.late-list, .absent-list {
    margin-top: 15px;
    width: 100%;
    display: none;
}

.late-list ul, .absent-list ul {
    list-style-type: none;
    columns: 3;
    column-gap: 15px;
}

.late-list li, .absent-list li {
    padding: 8px 0;
    border-bottom: 1px solid var(--light-border);
    break-inside: avoid;
}

.filters {
    display: flex;
    gap: 15px;
    flex-wrap: wrap;
    margin-bottom: 15px;
}

.filter-item {
    flex: 1;
    min-width: 200px;
}

.error-panel {
    background-color: rgba(255, 107, 139, 0.1);
    color: #822727;
    padding: 12px;
    border-radius: 8px;
    margin-top: 15px;
    width: 100%;
    display: none;
    border: 1px solid rgba(255, 107, 139, 0.3);
    font-weight: 500;
}

.star-header {
    position: relative;
}

.fun-fact {
    background-color: #ffe6f2;
    border-radius: 8px;
    padding: 12px;
    margin-top: 12px;
    font-size: 0.85rem;
    color: #8a2e5a;
    border-left: 3px solid var(--secondary-color);
    display: flex;
    align-items: center;
    gap: 8px;
}

.stats .stat-box {
    position: relative;
    background-color: var(--primary-color);
    color: white;
    padding: 12px 15px;
    border-radius: 10px;
    min-width: 120px;
    cursor: pointer;
    text-align: center;
    transition: background-color 0.2s;
}

.stats .stat-box:hover {
    background-color: var(--primary-dark);
}

.search-wrapper {
    position: relative;
}

.search-wrapper i {
    position: absolute;
    left: 12px;
    top: 50%;
    transform: translateY(-50%);
    color: var(--primary-color);
}

.search-wrapper input {
    padding-left: 35px;
}

.logout-btn {
    background-color: var(--secondary-color);
    color: white;
    border: none;
    padding: 10px 15px;
    border-radius: 8px;
    cursor: pointer;
    font-size: 14px;
    display: flex;
    align-items: center;
    margin-top: 15px;
    width: 100%;
    justify-content: center;
    gap: 6px;
    font-weight: 500;
    transition: background-color 0.2s;
}

.logout-btn:hover {
    background-color: #e6a85c;
}

.quote-container {
    background: linear-gradient(135deg, #fff0f5 0%, #f8f4ff 100%);
    border-radius: 12px;
    padding: 20px;
    margin-top: 20px;
    border: 2px solid var(--light-border);
    text-align: center;
    display: none;
}

.quote-content {
    font-size: 1.1rem;
    color: var(--primary-color);
    font-weight: 500;
    line-height: 1.6;
    margin-bottom: 15px;
    font-style: italic;
}

.quote-content.status-success {
    color: var(--success-color);
    font-weight: 600;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
}

.quote-content.status-error {
    color: var(--error-color);
    font-weight: 600;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
}

.quote-content.status-success i,
.quote-content.status-error i {
    font-size: 1.2rem;
}

.quote-author {
    color: var(--accent-color);
    font-size: 0.9rem;
    font-weight: 600;
}

.period-data {
    transition: all 0.3s ease;
}

.no-period-message {
    background: linear-gradient(135deg, #f0f8ff 0%, #e6f3ff 100%);
    border-radius: 10px;
    padding: 20px;
    text-align: center;
    color: var(--primary-color);
    font-weight: 500;
    margin-top: 15px;
    display: none;
}

.beian-info {
    text-align: center;
    margin-top: 0;
    padding: 0 10px;
    font-size: 0.85rem;
    color: #888;
    border-top: none;
}

.beian-info a {
    color: var(--primary-color);
    text-decoration: none;
    transition: color 0.2s;
}

.beian-info a:hover {
    color: var(--primary-dark);
    text-decoration: underline;
}

.login-footer {
    display: flex;
    justify-content: center;
    align-items: center;
    flex-wrap: wrap;
    gap: 20px;
    margin-top: 20px;
    padding-top: 15px;
}

.login-footer a {
    color: var(--primary-color);
    text-decoration: none;
    font-size: 0.9rem;
    display: flex;
    align-items: center;
    gap: 5px;
    transition: color 0.2s;
}

.login-footer a:hover {
    color: var(--primary-dark);
}

.login-footer p {
    margin: 0;
    font-size: 0.9rem;
    color: #888;
}

.duty-panel {
    background: linear-gradient(135deg, #fffaf0 0%, #fff5e6 100%);
    border: 2px solid #ffd8a8;
    margin-top: 15px;
}

.duty-carousel {
    position: relative;
    height: 180px;
    overflow: hidden;
    border-radius: 8px;
    background: rgba(255, 255, 255, 0.8);
}

.duty-slide {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    padding: 15px;
    opacity: 0;
    transform: translateX(100%);
    transition: all 0.5s ease-in-out;
    display: none;
}

.duty-slide.active {
    opacity: 1;
    transform: translateX(0);
    display: block;
}

.duty-group-title {
    font-weight: 600;
    color: var(--primary-color);
    margin-bottom: 10px;
    padding-bottom: 5px;
    border-bottom: 2px solid var(--primary-light);
    font-size: 1.1rem;
}

.duty-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 6px 0;
    border-bottom: 1px solid rgba(255, 182, 193, 0.3);
}

.duty-task {
    font-weight: 500;
    color: var(--light-text);
    flex: 1;
}

.duty-students {
    color: var(--primary-color);
    font-weight: 500;
    text-align: right;
    flex: 2;
}

.duty-loading {
    display: flex;
    align-items: center;
    justify-content: center;
    height: 100%;
    color: var(--primary-color);
    gap: 8px;
}

@media (max-width: 768px) {
    .late-list ul, .absent-list ul {
        columns: 2;
    }
    
    .student-grid {
        grid-template-columns: repeat(auto-fill, minmax(100px, 1fr));
    }
    
    .filters {
        flex-direction: column;
    }
    
    .filter-item {
        min-width: 100%;
    }
    
    .login-footer {
        flex-direction: column;
        gap: 10px;
    }
    
    .main-content {
        grid-template-columns: 1fr;
    }
    
    .no-period .main-content {
        grid-template-columns: 1fr;
    }
    
    .duty-carousel {
        height: 160px;
    }
    
    .duty-item {
        flex-direction: column;
        align-items: flex-start;
        gap: 2px;
    }
    
    .duty-students {
        text-align: left;
    }
}

@media (max-width: 480px) {
    .late-list ul, .absent-list ul {
        columns: 1;
    }
    
    .student-grid {
        grid-template-columns: repeat(auto-fill, minmax(80px, 1fr));
    }
}