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

body {
    font-family: Arial, Helvetica, sans-serif;
    background-color: #f8f9fa; /* Màu nền trang */
    height: 100vh;
    margin: 0;
    display: flex;
    flex-direction: column;
    justify-content: space-between;
}

/* Containers */
.login-container,
.dashboard-container,
.coding-container,
.results-container {
    width: 100%;
    max-width: 800px;
    background-color: #ffffff;
    padding: 30px;
    border-radius: 8px;
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.1);
}



header {
    display: flex;
    flex-direction: column; /* Stacks header content vertically */
    align-items: center; /* Centers the header content */
    justify-content: center; 
    text-align: center;
    padding: 20px;
    background-color: #007BFF;
    color: white;
    border-radius: 8px;
}

header h1 {
    margin: 0 0 10px 0;
    font-size: 28px;
}

nav {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
}

.nav-button {
    text-decoration: none;
    color: white;
    font-weight: bold;
    font-size: 16px;
    padding: 10px 20px;
    background-color: #0056b3;
    border-radius: 5px;
    border: none;
    cursor: pointer;
}

.nav-button:hover {
    background-color: #003f8a;
}

/* Content Section Styles */
.content-section {
    background-color: white;
    padding: 20px;
    border-radius: 8px;
    box-shadow: 0 2px 5px rgba(0, 0, 0, 0.1);
    margin-bottom: 30px; /* Added space below content section */
}

.lab-buttons {
    display: flex;
    justify-content: space-around;
    margin-top: 20px;
}

.lab-button {
    text-decoration: none;
    padding: 10px 20px;
    background-color: #007BFF;
    color: white;
    border-radius: 5px;
    font-size: 16px;
}

.lab-button:hover {
    background-color: #0056b3;
}

/* Login Section Styles */
.login-container {
    width: 100%;
    max-width: 800px;
    background-color: #ffffff;
    padding: 30px;
    border-radius: 8px;
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.1);
}

h2 {
    color: #00509e;
    text-align: center;
    margin-bottom: 20px;
}

form {
    display: flex;
    flex-direction: column;
}

label {
    font-weight: bold;
    margin-bottom: 8px;
}

input[type="text"], 
input[type="password"] {
    width: 100%;
    padding: 12px;
    margin-bottom: 15px;
    border: 1px solid #ddd;
    border-radius: 4px;
}

button {
    padding: 12px 20px;
    color: white;
    background-color: #00509e;
    border: none;
    border-radius: 4px;
    cursor: pointer;
}

button:hover {
    background-color: #003f7d;
}

.forgot-password {
    font-size: 14px;
    text-align: right;
    margin-top: 10px;
    display: block;
}
.footer {
    background-color: #343a40; /* Màu nền tối */
    color: #ffffff; /* Màu chữ trắng */
    text-align: center; /* Căn giữa nội dung */
    padding: 1rem; /* Khoảng cách bên trong */

    bottom: 0; /* Ở dưới cùng */
    width: 100%; /* Chiếm toàn bộ chiều rộng */
    box-shadow: 0 -2px 5px rgba(0, 0, 0, 0.5); /* Đổ bóng */
}

.footer p {
    margin: 0; /* Loại bỏ khoảng cách mặc định */
}