* {
    box-sizing: border-box;
}

body {
    margin: 0;
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    background: #f3f6fb;
    font-family: Arial, sans-serif;
    color: #1e293b;
}

.login-box {
    width: 100%;
    max-width: 400px;
    margin: 20px;
    padding: 36px;
    background: #fff;
    border-radius: 14px;
    box-shadow: 0 8px 30px rgba(0, 0, 0, 0.06);
}

h1 {
    margin: 0 0 8px;
    font-size: 28px;
}

.login-box p {
    color: #64748b;
    margin-bottom: 30px;
}

label {
    display: block;
    margin: 18px 0 8px;
    font-size: 14px;
    font-weight: 600;
}

input {
    width: 100%;
    padding: 12px;
    border: 1px solid #cbd5e1;
    border-radius: 8px;
    font-size: 15px;
}

input:focus {
    outline: 2px solid #2563eb;
    outline-offset: 1px;
}

button {
    width: 100%;
    margin-top: 25px;
    padding: 13px;
    background: #2563eb;
    color: white;
    border: none;
    border-radius: 8px;
    font-size: 15px;
    font-weight: 600;
    cursor: pointer;
}

button:hover {
    background: #1d4ed8;
}

.error {
    padding: 12px;
    background: #fee2e2;
    color: #991b1b;
    border-radius: 8px;
    font-size: 14px;
}

@media (max-width: 480px) {
    .login-box {
        padding: 24px;
    }
}