/* 基础样式 */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: #333;
    line-height: 1.6;
    min-height: 100vh;
}

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

/* 导航栏样式 */
.navbar {
    background: #fff;
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
    position: sticky;
    top: 0;
    z-index: 1000;
}

.nav-container {
    max-width: 1200px;
    margin: 0 auto;
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1rem 20px;
}

.nav-title {
    color: #2c3e50;
    font-size: 1.8rem;
    font-weight: 700;
    background: linear-gradient(45deg, #667eea, #764ba2);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.nav-menu {
    display: flex;
    align-items: center;
    gap: 2rem;
}

.nav-link {
    text-decoration: none;
    color: #666;
    font-weight: 500;
    transition: color 0.3s;
    cursor: pointer;
}

.nav-link:hover, .nav-link.active {
    color: #3456e1;
}

.auth-links {
    display: flex;
    gap: 1rem;
}

/* 按钮样式 */
.btn {
    padding: 0.75rem 1.5rem;
    border: none;
    border-radius: 6px;
    cursor: pointer;
    font-size: 0.9rem;
    font-weight: 500;
    transition: all 0.3s;
    text-decoration: none;
    display: inline-block;
    text-align: center;
}

.btn-primary {
    background: #3456e1;
    color: white;
}

.btn-primary:hover {
    background: #2a47b8;
}

.btn-secondary {
    background: #6c757d;
    color: white;
}

.btn-secondary:hover {
    background: #5a6268;
}

.btn-danger {
    background: #dc3545;
    color: white;
}

.btn-danger:hover {
    background: #c82333;
}

.btn-success {
    background: #28a745;
    color: white;
}

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

/* 主要内容区域 */
.main-content {
    min-height: calc(100vh - 80px);
    padding: 2rem 0;
}

.section {
    display: none;
}

.section.active {
    display: block;
}

/* 首页样式 */
.features {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
    margin-top: 3rem;
}

.feature-card {
    background: white;
    padding: 2rem;
    border-radius: 10px;
    box-shadow: 0 4px 15px rgba(0,0,0,0.1);
    text-align: center;
}

.feature-card h3 {
    color: #3456e1;
    margin-bottom: 1rem;
}

/* 认证表单样式 */
.auth-section {
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 70vh;
}

.auth-container {
    width: 100%;
    max-width: 400px;
}

.auth-form {
    background: white;
    padding: 2rem;
    border-radius: 10px;
    box-shadow: 0 4px 15px rgba(0,0,0,0.1);
}

.auth-form h2 {
    text-align: center;
    margin-bottom: 2rem;
    color: #3456e1;
}

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

.form-group label {
    display: block;
    margin-bottom: 0.5rem;
    font-weight: 500;
    color: #555;
}

.form-group input {
    width: 100%;
    padding: 0.75rem;
    border: 2px solid #e1e5e9;
    border-radius: 6px;
    font-size: 1rem;
    transition: border-color 0.3s;
}

.form-group input:focus {
    outline: none;
    border-color: #3456e1;
}

.form-group input[type="submit"] {
    background: #3456e1;
    color: white;
    cursor: pointer;
}

/* 任务管理样式 */
.tasks-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 2rem;
}

.tasks-header h2 {
    color: #3456e1;
}

.tasks-list {
    display: grid;
    gap: 1rem;
}

.task-item {
    background: white;
    padding: 1.5rem;
    border-radius: 8px;
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
    border-left: 4px solid #3456e1;
}

.task-item.completed {
    border-left-color: #28a745;
    opacity: 0.7;
}

.task-title {
    font-size: 1.1rem;
    font-weight: 600;
    margin-bottom: 0.5rem;
    color: #333;
}

.task-description {
    color: #666;
    margin-bottom: 1rem;
}

.task-meta {
    display: flex;
    justify-content: space-between;
    align-items: center;
    font-size: 0.9rem;
    color: #888;
}

.task-status {
    padding: 0.25rem 0.75rem;
    border-radius: 20px;
    font-size: 0.8rem;
    font-weight: 500;
}

.task-status.pending {
    background: #fff3cd;
    color: #856404;
}

.task-status.in-progress {
    background: #d1ecf1;
    color: #0c5460;
}

.task-status.completed {
    background: #d4edda;
    color: #155724;
}

.task-actions {
    display: flex;
    gap: 0.5rem;
}

.task-actions .btn {
    padding: 0.5rem 1rem;
    font-size: 0.8rem;
}

/* 个人中心样式 */
.profile-content {
    background: white;
    padding: 2rem;
    border-radius: 10px;
    box-shadow: 0 4px 15px rgba(0,0,0,0.1);
}

.profile-info {
    margin-bottom: 2rem;
}

.profile-info h3 {
    color: #3456e1;
    margin-bottom: 1rem;
}

.profile-info p {
    margin-bottom: 0.5rem;
}

/* 模态框样式 */
.modal {
    display: none;
    position: fixed;
    z-index: 2000;
    left: 0;
    top: 0;
    width: 100%;
    height: 100%;
    background-color: rgba(0,0,0,0.5);
}

.modal-content {
    background-color: white;
    margin: 5% auto;
    padding: 2rem;
    border-radius: 10px;
    width: 90%;
    max-width: 500px;
    position: relative;
}

.close {
    position: absolute;
    right: 1rem;
    top: 1rem;
    font-size: 2rem;
    cursor: pointer;
    color: #aaa;
}

.close:hover {
    color: #000;
}

/* 通知样式 */
.notification {
    position: fixed;
    top: 100px;
    right: 20px;
    padding: 1rem 2rem;
    border-radius: 6px;
    color: white;
    font-weight: 500;
    z-index: 3000;
    transform: translateX(400px);
    transition: transform 0.3s;
}

.notification.show {
    transform: translateX(0);
}

.notification.success {
    background: #28a745;
}

.notification.error {
    background: #dc3545;
}

.notification.info {
    background: #17a2b8;
}

/* 印刻时间专用样式 */

/* 主要内容区域 */
.main-content {
    background: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    margin: 2rem auto;
    border-radius: 20px;
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.1);
    overflow: hidden;
}

/* 首页样式 */
.hero-section {
    text-align: center;
    padding: 4rem 2rem;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    margin: -2rem -2rem 2rem -2rem;
}

.hero-section h2 {
    font-size: 3rem;
    font-weight: 700;
    margin-bottom: 1rem;
    text-shadow: 0 2px 4px rgba(0, 0, 0, 0.3);
}

.hero-subtitle {
    font-size: 1.5rem;
    margin-bottom: 1rem;
    opacity: 0.9;
}

.hero-description {
    font-size: 1.1rem;
    opacity: 0.8;
    max-width: 600px;
    margin: 0 auto;
}

.feature-icon {
    font-size: 3rem;
    margin-bottom: 1rem;
}

.login-prompt {
    text-align: center;
    padding: 3rem 2rem;
    background: #f8f9fa;
    border-radius: 15px;
    margin-top: 3rem;
}

.login-prompt h3 {
    color: #2c3e50;
    margin-bottom: 1rem;
}

/* 日程管理样式 */
.schedules-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 2rem;
    padding-bottom: 1rem;
    border-bottom: 2px solid #e9ecef;
}

.schedule-actions {
    display: flex;
    gap: 1rem;
}

.schedule-filters {
    margin-bottom: 2rem;
}

.form-select {
    padding: 0.75rem 1rem;
    border: 2px solid #e9ecef;
    border-radius: 10px;
    background: white;
    font-size: 1rem;
    min-width: 150px;
}

.schedules-list {
    display: grid;
    gap: 1rem;
    margin-bottom: 2rem;
}

.schedule-item {
    background: white;
    border: 1px solid #e9ecef;
    border-radius: 15px;
    padding: 1.5rem;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.05);
    transition: transform 0.2s, box-shadow 0.2s;
}

.schedule-item:hover {
    transform: translateY(-2px);
    box-shadow: 0 5px 20px rgba(0, 0, 0, 0.1);
}

.schedule-time {
    color: #667eea;
    font-weight: 600;
    font-size: 0.9rem;
    margin-bottom: 0.5rem;
}

.schedule-title {
    font-size: 1.2rem;
    font-weight: 600;
    color: #2c3e50;
    margin-bottom: 0.5rem;
}

.schedule-content {
    color: #6c757d;
    line-height: 1.5;
}

.sync-status {
    background: #f8f9fa;
    border-radius: 15px;
    padding: 1.5rem;
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1rem;
}

.status-item {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.status-label {
    font-size: 0.9rem;
    color: #6c757d;
    font-weight: 500;
}

.status-value {
    font-size: 1.1rem;
    color: #2c3e50;
    font-weight: 600;
}

/* 同步设置样式 */
.sync-settings {
    display: grid;
    gap: 2rem;
}

.setting-card {
    background: white;
    border: 1px solid #e9ecef;
    border-radius: 15px;
    padding: 2rem;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.05);
}

.setting-card h3 {
    color: #2c3e50;
    margin-bottom: 0.5rem;
}

.setting-card p {
    color: #6c757d;
    margin-bottom: 1.5rem;
}

.setting-actions {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.connection-status {
    padding: 0.5rem 1rem;
    border-radius: 20px;
    font-size: 0.9rem;
    font-weight: 500;
}

.connection-status.connected {
    background: #d4edda;
    color: #155724;
}

.connection-status.disconnected {
    background: #f8d7da;
    color: #721c24;
}

/* 个人中心样式 */
.profile-content {
    display: grid;
    gap: 2rem;
}

.profile-info {
    display: flex;
    align-items: center;
    gap: 2rem;
    background: white;
    border-radius: 15px;
    padding: 2rem;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.05);
}

.profile-avatar {
    width: 80px;
    height: 80px;
    border-radius: 50%;
    background: linear-gradient(135deg, #667eea, #764ba2);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 2rem;
}

.avatar-placeholder {
    color: white;
}

.profile-details h3 {
    color: #2c3e50;
    margin-bottom: 0.5rem;
}

.profile-details p {
    color: #6c757d;
    margin-bottom: 0.25rem;
}

.member-since {
    font-size: 0.9rem;
    color: #667eea;
}

.profile-stats {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 1rem;
}

.stat-card {
    background: white;
    border-radius: 15px;
    padding: 2rem;
    text-align: center;
    box-shadow: 0 2px 10px rgba(0, 0, 0, 0.05);
}

.stat-number {
    font-size: 2.5rem;
    font-weight: 700;
    color: #667eea;
    margin-bottom: 0.5rem;
}

.stat-label {
    color: #6c757d;
    font-size: 0.9rem;
    font-weight: 500;
}

.profile-actions {
    display: flex;
    gap: 1rem;
    justify-content: center;
}

/* 登录表单样式 */
.auth-subtitle {
    color: #6c757d;
    text-align: center;
    margin-bottom: 2rem;
    font-size: 1.1rem;
}

.auth-help {
    text-align: center;
    margin-top: 1.5rem;
    padding-top: 1.5rem;
    border-top: 1px solid #e9ecef;
}

.auth-help p {
    color: #6c757d;
    font-size: 0.9rem;
}

/* 响应式设计 */
@media (max-width: 768px) {
    .nav-container {
        flex-direction: column;
        gap: 1rem;
    }
    
    .nav-menu {
        flex-direction: column;
        gap: 1rem;
    }
    
    .schedules-header {
        flex-direction: column;
        gap: 1rem;
        align-items: stretch;
    }
    
    .schedule-actions {
        justify-content: center;
    }
    
    .features {
        grid-template-columns: 1fr;
    }
    
    .hero-section h2 {
        font-size: 2rem;
    }
    
    .hero-subtitle {
        font-size: 1.2rem;
    }
    
    .profile-info {
        flex-direction: column;
        text-align: center;
    }
    
    .profile-stats {
        grid-template-columns: 1fr;
    }
    
    .sync-status {
        grid-template-columns: 1fr;
    }
    
    .modal-content {
        margin: 10% auto;
        width: 95%;
    }
}