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

body {
    font-family: Arial, sans-serif;
    background-color: #f5f5f5;
    color: #333;
}

#app {
    max-width: 600px;
    margin: 0 auto;
    background-color: #fff;
    min-height: 100vh;
}

.page {
    padding: 20px;
}

h1 {
    text-align: center;
    margin-bottom: 30px;
    color: #333;
}

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

label {
    display: block;
    margin-bottom: 8px;
    font-weight: bold;
    color: #555;
}

input[type="text"],
input[type="tel"],
input[type="password"],
input[type="number"],
input[type="date"],
select,
textarea {
    width: 100%;
    padding: 10px;
    border: 1px solid #ddd;
    border-radius: 5px;
    font-size: 16px;
}

textarea {
    resize: vertical;
    min-height: 100px;
}

button {
    width: 100%;
    padding: 12px;
    background-color: #007bff;
    color: #fff;
    border: none;
    border-radius: 5px;
    font-size: 16px;
    cursor: pointer;
    margin-top: 10px;
}

button:hover {
    background-color: #0069d9;
}

p {
    text-align: center;
    margin-top: 20px;
}

a {
    color: #007bff;
    text-decoration: none;
}

nav {
    background-color: #f8f9fa;
    border-bottom: 1px solid #ddd;
    padding: 10px 0;
}

nav ul {
    display: flex;
    justify-content: space-around;
    list-style: none;
}

nav ul li a {
    display: block;
    padding: 10px;
    color: #333;
    text-decoration: none;
}

nav ul li a:hover {
    color: #007bff;
}

.tabs {
    display: flex;
    margin-bottom: 20px;
    border-bottom: 1px solid #ddd;
}

.tab {
    flex: 1;
    padding: 10px;
    background: none;
    border: none;
    border-bottom: 2px solid transparent;
    cursor: pointer;
}

.tab.active {
    border-bottom-color: #007bff;
    color: #007bff;
}

.tab-content {
    padding: 10px 0;
}

ul {
    list-style: none;
}

ul li {
    padding: 15px;
    border-bottom: 1px solid #eee;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

ul li:hover {
    background-color: #f5f5f5;
}

#messages {
    height: 400px;
    overflow-y: auto;
    padding: 10px;
    border: 1px solid #ddd;
    border-radius: 5px;
    margin-bottom: 20px;
}

.message {
    margin-bottom: 10px;
    padding: 10px;
    border-radius: 10px;
    max-width: 80%;
}

.message.sent {
    background-color: #e3f2fd;
    align-self: flex-end;
    margin-left: auto;
}

.message.received {
    background-color: #f5f5f5;
    align-self: flex-start;
}

.chat-input {
    display: flex;
    gap: 10px;
}

.chat-input input {
    flex: 1;
}

.chat-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 20px;
    padding-bottom: 10px;
    border-bottom: 1px solid #ddd;
}

#age-display {
    margin-top: 5px;
    color: #666;
    font-size: 14px;
}

#login-page,
#register-page {
    max-width: 400px;
    margin: 100px auto;
    padding: 30px;
    border: 1px solid #ddd;
    border-radius: 10px;
    background-color: #fff;
}

/* 搜索框样式 */
.search-box {
    margin: 20px 0;
    display: flex;
    gap: 10px;
}

.search-box input {
    flex: 1;
    padding: 10px;
    border: 1px solid #ddd;
    border-radius: 4px;
    font-size: 16px;
}

.search-box button {
    padding: 10px 20px;
    background-color: #007bff;
    color: white;
    border: none;
    border-radius: 4px;
    cursor: pointer;
    margin-top: 0;
    width: auto;
}

.search-box button:hover {
    background-color: #0069d9;
}