body {
    margin: 0;
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background: linear-gradient(135deg, #0f2027, #203a43, #2c5364);
    display: flex;
    justify-content: center;
    align-items: center;
    height: 100vh;
}

.login-container {
    text-align: center;
    color: white;
}

.brand h1 {
    margin-bottom: 5px;
    font-size: 28px;
    letter-spacing: 1px;
}

.brand p {
    font-size: 14px;
    opacity: 0.8;
    margin-bottom: 30px;
}

.login-card {
    background: white;
    color: #333;
    padding: 35px;
    width: 350px;
    border-radius: 12px;
    box-shadow: 0 15px 35px rgba(0,0,0,0.3);
    text-align: center;
}

.login-card h2 {
    margin-bottom: 20px;
}

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

.input-group input {
    width: 100%;
    padding: 12px;
    border-radius: 6px;
    border: 1px solid #ccc;
    font-size: 14px;
    transition: 0.3s;
}

.input-group input:focus {
    border-color: #2c5364;
    outline: none;
    box-shadow: 0 0 5px rgba(44,83,100,0.5);
}

.btn-login {
    width: 100%;
    padding: 12px;
    background: #2c5364;
    color: white;
    border: none;
    border-radius: 6px;
    font-size: 15px;
    cursor: pointer;
    transition: 0.3s;
}

.btn-login:hover {
    background: #203a43;
}

.error {
    background: #ffe6e6;
    color: red;
    padding: 8px;
    margin-bottom: 15px;
    border-radius: 5px;
    font-size: 13px;
}