body {
    margin: 0;
    padding: 0;
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 100vh;

    background: url("/static/images/iot_circuit.jpg") no-repeat center center fixed;
    background-size: cover;
    /* gambar mengisi seluruh layar */
    font-family: 'Jost', sans-serif;
}
.main {
    width: 350px;
    height: auto;
    background: rgba(135, 206, 235, 0.95);
    /* Soft Sky Blue */    /* Soft donker blue */
    border-radius: 10px;
    box-shadow: 0 8px 16px rgba(0, 0, 0, 0.2);
    padding: 40px;
    box-sizing: border-box;
}

.version-info {
    margin-top: 20px;
    color: black;
    text-align: center;
    font-size: 14px;
}

.logo-container {
    display: flex;
    justify-content: center;
    margin-bottom: 30px;
}

img {
    width: 100px;
    height: auto;
}
input {
    width: 90%;
    padding: 12px;
    margin-bottom: 20px;
    border: 1px solid #ccc;
    border-radius: 5px;
    background: #fafafa;
}

/* BUTTON PRIMARY COLOR: Navy Blue */
button {
    width: 100%;
    padding: 12px 0;
    background: #0D47A1;
    /* Navy Blue */
    color: #fff;
    font-size: 1em;
    border-radius: 5px;
    cursor: pointer;
    border: none;
    outline: none;
    transition: background 0.3s, transform 0.3s, box-shadow 0.3s;
}

/* BUTTON HOVER: Slightly lighter navy */
button:hover {
    background: #1565C0;
    /* Lighter blue */
    transform: scale(1.05);
    box-shadow: 0 4px 12px rgba(0, 0, 0, 0.25);
}
.flash-container {
    margin-bottom: 20px;
}

.flash {
    background: #d32f2f;
    color: white;
    padding: 10px;
    border-radius: 5px;
    text-align: center;
    display: none;
}

@keyframes fadeIn {
    from {
        opacity: 0;
    }

    to {
        opacity: 1;
    }
}