* {
    box-sizing: border-box;
}

body {
    margin: 0;
    font-family: Arial, sans-serif;
    background: #f4f6f8;
    color: #222;
}

.topbar {
    height: 64px;
    background: #ffffff;
    border-bottom: 1px solid #ddd;

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

    padding: 0 30px;
}

.topbar a {
    color: #d00;
    text-decoration: none;
}

.container {
    max-width: 1200px;
    margin: 30px auto;
    padding: 0 20px;
}

.cards {
    display: grid;
    grid-template-columns:
        repeat(4, 1fr);

    gap: 20px;
}

.card {
    background: white;
    padding: 25px;
    border-radius: 10px;

    box-shadow:
        0 2px 8px rgba(0,0,0,.08);
}

.card span {
    display: block;
    color: #666;
    margin-bottom: 10px;
}

.card strong {
    font-size: 32px;
}

.menu {
    margin-top: 30px;

    display: grid;
    grid-template-columns:
        repeat(3, 1fr);

    gap: 20px;
}

.menu a {
    background: white;
    padding: 25px;

    border-radius: 10px;

    text-decoration: none;
    color: #222;

    box-shadow:
        0 2px 8px rgba(0,0,0,.08);
}

.login-box {
    width: 400px;
    max-width: calc(100% - 40px);

    margin: 100px auto;

    background: white;
    padding: 30px;

    border-radius: 12px;

    box-shadow:
        0 5px 25px rgba(0,0,0,.1);
}

.login-box h1 {
    margin-top: 0;
    text-align: center;
}

.login-box label {
    display: block;
    margin-top: 15px;
    margin-bottom: 5px;
}

.login-box input {
    width: 100%;
    padding: 12px;

    border: 1px solid #ccc;
    border-radius: 6px;
}

.login-box button {
    width: 100%;

    margin-top: 25px;

    padding: 13px;

    border: 0;
    border-radius: 6px;

    background: #1769aa;
    color: white;

    cursor: pointer;
}

.alert {
    padding: 12px;
    background: #ffe5e5;
    color: #b00000;
    border-radius: 6px;
    margin-bottom: 15px;
}

@media (max-width: 700px) {

    .cards {
        grid-template-columns: 1fr 1fr;
    }

    .menu {
        grid-template-columns: 1fr;
    }

}

@media (max-width: 450px) {

    .cards {
        grid-template-columns: 1fr;
    }

}
.success {
    padding: 12px;
    background: #e5f7e8;
    color: #176b2c;
    border-radius: 6px;
    margin-bottom: 15px;
}