body {
    font-family: "Sarabun", sans-serif;
    font-weight: 300;
    margin: 0;
    padding: 0;
    background: linear-gradient(135deg, #667eea, #764ba2);
    height: 100vh;
    display: flex;
    justify-content: center;
    align-items: center;
    color: #fff;
}

.container {
    width: 100%;
    max-width: 900px;
    padding: 20px;
    box-sizing: border-box;
}

.title-wrapper {
    text-align: center;
    margin-bottom: 20px;
}

.title-wrapper h1 {
    text-align: center;
    margin: 0;
    padding: 10px;
    font-size: 1.8em;
    color: #fff;
}

.title-wrapper h2 {
    text-align: center;
    margin: 0;
    font-size: 1.2em;
    color: #f1f1f1;
}

.login-section {
    background: #f9f9f9;
    padding: 30px;
    border-radius: 10px;
    box-shadow: 0 0 15px rgba(0,0,0,0.2);
    margin: 0 auto;
    max-width: 500px;
    width: 100%;
    color: #333;
}

.login-section h2 {
    margin: 0 0 20px;
    font-size: 1.6em;
    color: #764ba2;
    text-align: center;
}

.input-group {
    margin-bottom: 15px;
}

.input-group input {
    width: 100%;
    padding: 12px;
    border: 1px solid #ddd;
    border-radius: 6px;
    font-size: 1em;
}

button {
    width: 100%;
    background: linear-gradient(135deg, #667eea, #764ba2);
    color: #fff;
    border: none;
    padding: 12px;
    border-radius: 6px;
    font-size: 1em;
    cursor: pointer;
    transition: background 0.3s ease;
}

button:hover {
    background: linear-gradient(135deg, #764ba2, #667eea);
}

/* Responsive */
@media (max-width: 768px) {
    .title-wrapper h1 { font-size: 1.5em; }
    .title-wrapper h2 { font-size: 1em; }
    .login-section { padding: 20px; }
}

@media (max-width: 480px) {
    .title-wrapper h1 { font-size: 1.3em; }
    .title-wrapper h2 { font-size: 0.9em; }
    .login-section { padding: 15px; }
}