* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: Arial, Helvetica, sans-serif;
}

body {
    height: 100vh;
    background: linear-gradient(135deg, #0f172a, #1e293b);
    display: flex;
    justify-content: center;
    align-items: center;
}

.login-container {
    width: 100%;
    max-width: 400px;
}

.login-card {
    background: #ffffff;
    padding: 35px;
    border-radius: 12px;
    box-shadow: 0 20px 40px rgba(0,0,0,0.3);
    text-align: center;
}

.logo {
    width: 120px;
    margin-bottom: 20px;
}

.login-card h2 {
    margin-bottom: 25px;
    color: #1e293b;
}

.input-group {
    display: flex;
    align-items: center;
    background: #f1f5f9;
    border-radius: 8px;
    margin-bottom: 15px;
    padding: 10px;
}

.input-group span {
    margin-right: 8px;
    color: #475569;
}

.input-group input {
    border: none;
    outline: none;
    background: transparent;
    width: 100%;
    font-size: 14px;
}

button {
    width: 100%;
    padding: 12px;
    border: none;
    border-radius: 8px;
    background: #2563eb;
    color: white;
    font-size: 15px;
    cursor: pointer;
    margin-top: 10px;
}

button:hover {
    background: #1d4ed8;
}

#message {
    margin-top: 15px;
    font-size: 14px;
}