body {
    font-family: Arial, sans-serif;
    margin: 0;
    padding: 0;
    background-color: #f4f4f4;
    color: #333;
    line-height: 1.6;
}

/* Header/Navigation */
header {
    background: #3498db;
    color: #fff;
    padding: 1em 5%;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

header a {
    color: #fff;
    text-decoration: none;
    margin-left: 15px;
}

.logo {
    font-size: 1.5em;
    font-weight: bold;
}

/* Authentication Containers */
.auth-container {
    max-width: 400px;
    margin: 50px auto;
    padding: 20px;
    background: #fff;
    border-radius: 8px;
    box-shadow: 0 0 10px rgba(0, 0, 0, 0.1);
    text-align: center;
}

.auth-container h2 {
    color: #3498db;
    margin-bottom: 20px;
}

.auth-container input[type="text"],
.auth-container input[type="password"] {
    width: 90%;
    padding: 10px;
    margin: 10px 0;
    border: 1px solid #ccc;
    border-radius: 5px;
    box-sizing: border-box;
}

.auth-container button {
    background: #3498db;
    color: #fff;
    border: none;
    padding: 10px 20px;
    border-radius: 5px;
    cursor: pointer;
    font-size: 1em;
    margin-top: 10px;
    width: 90%;
}

.auth-container button:hover {
    background: #2980b9;
}

/* Messages and Errors */
.error-message {
    color: #e74c3c;
    margin-bottom: 15px;
    font-weight: bold;
}

/* Home Page / Main Content */
main {
    padding: 20px 5%;
}

.video-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 20px;
    margin-top: 20px;
}

.video-item {
    background: #fff;
    padding: 15px;
    border-radius: 8px;
    box-shadow: 0 2px 5px rgba(0, 0, 0, 0.05);
}

.video-item img {
    width: 100%;
    height: auto;
    border-radius: 5px;
    margin-bottom: 10px;
}