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

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    background-color: #f5f5f5;
    color: #333;
    line-height: 1.6;
}

/* 顶部导航 */
.header {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    padding: 1rem 0;
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 1000;
}

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

.logo {
    font-size: 1.5rem;
    font-weight: bold;
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.login-btn {
    background: rgba(255,255,255,0.2);
    color: white;
    border: 1px solid rgba(255,255,255,0.3);
    padding: 0.5rem 1rem;
    border-radius: 20px;
    cursor: pointer;
    transition: all 0.3s ease;
}

.login-btn:hover {
    background: rgba(255,255,255,0.3);
}

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

/* 欢迎页面 */
.welcome-section {
    padding: 2rem 1rem;
    max-width: 1200px;
    margin: 0 auto;
}

.hero {
    text-align: center;
    padding: 3rem 0;
}

.hero h2 {
    font-size: 2.5rem;
    margin-bottom: 1rem;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
}

.hero p {
    font-size: 1.2rem;
    color: #666;
    margin-bottom: 3rem;
}

.feature-cards {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 2rem;
    margin-top: 3rem;
}

.feature-card {
    background: white;
    padding: 2rem;
    border-radius: 15px;
    box-shadow: 0 5px 20px rgba(0,0,0,0.1);
    text-align: center;
    transition: transform 0.3s ease;
}

.feature-card:hover {
    transform: translateY(-5px);
}

.feature-card i {
    font-size: 3rem;
    color: #667eea;
    margin-bottom: 1rem;
}

.feature-card h3 {
    font-size: 1.3rem;
    margin-bottom: 0.5rem;
}

/* 模态框 */
.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: 10% auto;
    padding: 2rem;
    border-radius: 15px;
    width: 90%;
    max-width: 400px;
    position: relative;
}

.close {
    position: absolute;
    right: 1rem;
    top: 1rem;
    font-size: 1.5rem;
    cursor: pointer;
    color: #999;
}

.close:hover {
    color: #333;
}

.form-group {
    margin-bottom: 1rem;
}

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

.form-group input {
    width: 100%;
    padding: 0.75rem;
    border: 1px solid #ddd;
    border-radius: 8px;
    font-size: 1rem;
}

.form-group input:focus {
    outline: none;
    border-color: #667eea;
    box-shadow: 0 0 0 2px rgba(102, 126, 234, 0.2);
}

.submit-btn {
    width: 100%;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
    border: none;
    padding: 0.75rem;
    border-radius: 8px;
    font-size: 1rem;
    cursor: pointer;
    transition: opacity 0.3s ease;
}

.submit-btn:hover {
    opacity: 0.9;
}

.register-link, .login-link {
    text-align: center;
    margin-top: 1rem;
}

.register-link a, .login-link a {
    color: #667eea;
    text-decoration: none;
}

/* 应用界面 */
.app-section {
    padding-bottom: 80px;
}

.bottom-nav {
    position: fixed;
    bottom: 0;
    left: 0;
    right: 0;
    background: white;
    display: flex;
    box-shadow: 0 -2px 10px rgba(0,0,0,0.1);
    z-index: 1000;
}

.nav-item {
    flex: 1;
    display: flex;
    flex-direction: column;
    align-items: center;
    padding: 0.75rem 0.5rem;
    cursor: pointer;
    transition: color 0.3s ease;
    color: #999;
}

.nav-item.active {
    color: #667eea;
}

.nav-item i {
    font-size: 1.2rem;
    margin-bottom: 0.25rem;
}

.nav-item span {
    font-size: 0.8rem;
}

/* 页面内容 */
.page-content {
    max-width: 1200px;
    margin: 0 auto;
    padding: 1rem;
}

.page-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1.5rem;
}

.page-header h2 {
    font-size: 1.5rem;
    color: #333;
}

.add-btn {
    background: #667eea;
    color: white;
    border: none;
    width: 40px;
    height: 40px;
    border-radius: 50%;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: background 0.3s ease;
}

.add-btn:hover {
    background: #5a6fd8;
}

/* 搜索栏 */
.search-bar {
    display: flex;
    gap: 0.5rem;
    margin-bottom: 1rem;
}

.search-bar input {
    flex: 1;
    padding: 0.75rem;
    border: 1px solid #ddd;
    border-radius: 8px;
    font-size: 1rem;
}

.search-bar button {
    background: #667eea;
    color: white;
    border: none;
    padding: 0.75rem 1rem;
    border-radius: 8px;
    cursor: pointer;
}

/* 股票列表 */
.stock-list {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.stock-item {
    background: white;
    padding: 1rem;
    border-radius: 10px;
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.stock-info h3 {
    font-size: 1.1rem;
    margin-bottom: 0.25rem;
}

.stock-info p {
    color: #666;
    font-size: 0.9rem;
}

.stock-price {
    text-align: right;
}

.price {
    font-size: 1.2rem;
    font-weight: bold;
}

.change {
    font-size: 0.9rem;
    margin-top: 0.25rem;
}

.change.positive {
    color: #e74c3c;
}

.change.negative {
    color: #27ae60;
}

/* 提醒统计 */
.alert-stats {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 1rem;
    margin-bottom: 1.5rem;
}

.stat-item {
    background: white;
    padding: 1rem;
    border-radius: 10px;
    text-align: center;
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
}

.stat-number {
    display: block;
    font-size: 1.5rem;
    font-weight: bold;
    color: #667eea;
}

.stat-label {
    font-size: 0.9rem;
    color: #666;
}

/* 提醒列表 */
.alert-list {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.alert-item {
    background: white;
    padding: 1rem;
    border-radius: 10px;
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
    border-left: 4px solid #667eea;
}

.alert-item.unread {
    border-left-color: #e74c3c;
}

.alert-item h4 {
    margin-bottom: 0.5rem;
}

.alert-item p {
    color: #666;
    font-size: 0.9rem;
}

/* 纪律分数 */
.discipline-score {
    text-align: center;
    margin-bottom: 2rem;
}

.score-circle {
    width: 120px;
    height: 120px;
    border-radius: 50%;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    margin: 0 auto 1rem;
    color: white;
}

.score-number {
    font-size: 2rem;
    font-weight: bold;
}

.score-label {
    font-size: 0.9rem;
}

.discipline-stats {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 1rem;
    margin-bottom: 2rem;
}

.stat-card {
    background: white;
    padding: 1rem;
    border-radius: 10px;
    text-align: center;
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
}

.stat-card h4 {
    margin-bottom: 0.5rem;
    color: #333;
}

.stat-card .score {
    font-size: 1.5rem;
    font-weight: bold;
    color: #667eea;
}

/* 纪律记录 */
.discipline-records h3 {
    margin-bottom: 1rem;
}

.record-item {
    background: white;
    padding: 1rem;
    border-radius: 10px;
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
    margin-bottom: 1rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.record-info h4 {
    margin-bottom: 0.25rem;
}

.record-info p {
    color: #666;
    font-size: 0.9rem;
}

.record-score {
    font-size: 1.2rem;
    font-weight: bold;
}

.record-score.positive {
    color: #27ae60;
}

.record-score.negative {
    color: #e74c3c;
}

/* 个人页面 */
.profile-info {
    background: white;
    padding: 2rem;
    border-radius: 15px;
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
    text-align: center;
    margin-bottom: 2rem;
}

.avatar i {
    font-size: 4rem;
    color: #667eea;
    margin-bottom: 1rem;
}

.user-details h3 {
    margin-bottom: 0.5rem;
}

.user-details p {
    color: #666;
}

.profile-menu {
    background: white;
    border-radius: 15px;
    box-shadow: 0 2px 10px rgba(0,0,0,0.1);
    overflow: hidden;
}

.menu-item {
    display: flex;
    align-items: center;
    gap: 1rem;
    padding: 1rem;
    cursor: pointer;
    transition: background 0.3s ease;
    border-bottom: 1px solid #f0f0f0;
}

.menu-item:last-child {
    border-bottom: none;
}

.menu-item:hover {
    background: #f8f9fa;
}

.menu-item i {
    color: #667eea;
    width: 20px;
}

/* 加载状态 */
.loading {
    text-align: center;
    padding: 2rem;
    color: #666;
}

/* 消息提示 */
.toast {
    position: fixed;
    top: 100px;
    left: 50%;
    transform: translateX(-50%);
    background: #333;
    color: white;
    padding: 0.75rem 1.5rem;
    border-radius: 25px;
    z-index: 3000;
    opacity: 0;
    transition: opacity 0.3s ease;
}

.toast.show {
    opacity: 1;
}

.toast.success {
    background: #27ae60;
}

.toast.error {
    background: #e74c3c;
}

/* 响应式设计 */
@media (max-width: 768px) {
    .hero h2 {
        font-size: 2rem;
    }
    
    .feature-cards {
        grid-template-columns: 1fr;
    }
    
    .discipline-stats {
        grid-template-columns: 1fr;
    }
    
    .alert-stats {
        grid-template-columns: 1fr;
        gap: 0.5rem;
    }
    
    .modal-content {
        margin: 20% auto;
        width: 95%;
    }
}

/* 隐藏类 */
.hidden {
    display: none !important;
}