* {
    box-sizing: border-box;
}

html,
body {
    margin: 0;
    padding: 0;
    min-height: 100%;
    font-family:
        Arial,
        Helvetica,
        sans-serif;
}

body {
    background:
        linear-gradient(
            135deg,
            #111827,
            #1f2937
        );
}

.login-page {
    min-height: 100vh;

    display: flex;
    align-items: center;
    justify-content: center;

    padding: 20px;
}

.login-card {
    width: 100%;
    max-width: 420px;

    background: #ffffff;

    border-radius: 18px;

    padding: 36px;

    box-shadow:
        0 25px 60px rgba(0, 0, 0, 0.28);
}

.login-brand {
    text-align: center;

    margin-bottom: 30px;
}

.brand-icon {
    width: 70px;
    height: 70px;

    margin: 0 auto 18px;

    display: flex;
    align-items: center;
    justify-content: center;

    border-radius: 18px;

    background: #111827;
    color: #ffffff;

    font-size: 26px;
    font-weight: 700;
}

.login-brand h1 {
    margin: 0 0 8px;

    font-size: 26px;
    color: #111827;
}

.login-brand p {
    margin: 0;

    color: #6b7280;
    font-size: 14px;
}

.form-group {
    margin-bottom: 18px;
}

.form-group label {
    display: block;

    margin-bottom: 7px;

    color: #374151;
    font-size: 14px;
    font-weight: 600;
}

.form-group input {
    width: 100%;

    padding: 14px 15px;

    border: 1px solid #d1d5db;
    border-radius: 10px;

    font-size: 16px;

    outline: none;

    transition: 0.2s ease;
}

.form-group input:focus {
    border-color: #111827;

    box-shadow:
        0 0 0 3px rgba(17, 24, 39, 0.08);
}

.login-button {
    width: 100%;

    border: 0;
    border-radius: 10px;

    padding: 14px;

    background: #111827;
    color: #ffffff;

    font-size: 16px;
    font-weight: 700;

    cursor: pointer;

    transition: 0.2s ease;
}

.login-button:hover {
    background: #1f2937;
}

.alert-error {
    margin-bottom: 20px;

    padding: 12px 14px;

    border-radius: 10px;

    background: #fee2e2;
    color: #991b1b;

    font-size: 14px;
}

@media (max-width: 500px) {

    .login-card {
        padding: 28px 22px;
    }

}