body {
    margin: 0;
    font-family: 'Inter', sans-serif;
    background: #f5f7fa;
}

/* Sidebar */
.sidebar {
    width: 230px;
    height: 100vh;
    background: #0D47A1;
    position: fixed;
    left: 0;
    top: 0;
    padding-top: 30px;
    display: flex;
    flex-direction: column;
}

    .sidebar .logo img {
        width: 140px;
        margin: 0 auto 30px auto;
        display: block;
    }

    .sidebar a {
        color: #fff;
        padding: 15px 20px;
        text-decoration: none;
        font-size: 17px;
        display: block;
        transition: 0.2s;
    }

        .sidebar a:hover {
            background: #1565C0;
        }

    .sidebar .logout {
        margin-top: auto;
        background: #d32f2f;
    }

        .sidebar .logout:hover {
            background: #b71c1c;
        }

/* İçerik */
.content {
    margin-left: 230px;
    padding: 40px;
}

/* Dashboard kartları */
.cards {
    display: flex;
    gap: 20px;
}

.card {
    flex: 1;
    background: #fff;
    padding: 25px;
    border-radius: 12px;
    box-shadow: 0 4px 15px rgba(0,0,0,0.08);
}

    .card h3 {
        margin-top: 0;
        color: #0D47A1;
    }

    .card p {
        color: #444;
    }