body {
    font-family: "Segoe UI", Arial, sans-serif;
    background: #f5f7fb;
    margin: 0;
    color: #1f2937;
}

.custom-navbar {
    background: #0057b8;
    color: white;
    padding: 40px 20px 40px 20px;
    display: flex;
    justify-content: space-between; /* left group vs right group */
    align-items: center; /* vertical centering */
}

.login-button {
    background: rgb(255, 255, 255);
    color: rgb(0, 0, 0);
    padding: 10px 20px 10px 20px;
    border-radius: 5px;
    font-size: 15px;
    text-decoration: none;
    display: flex;
    justify-content: center;
    align-items: center;
}
.navbar-left {
    flex: 1;
    display: flex;
}

.navbar-center {
    flex: 1;
    display: flex;
}
.navbar-right {
    display: flex;
    gap: 10px; /* space between buttons */
}
.logout-button {
    background: rgb(255, 255, 255);
    color: rgb(0, 0, 0);
    padding: 10px 20px 10px 20px;
    font-size: 15px;
    border-radius: 5px;
    text-decoration: none;
    display: flex;
    justify-content: center;
    align-items: center;
}

.custom-navbar .logout-button:hover {
    background-color: rgb(212, 196, 196);
    color: black;
}
.custom-navbar .login-button:hover {
    background-color: rgb(212, 196, 196);
    color: black;
}

.navbar-text {
    color: rgb(0, 0, 0);
    font-size: 15px;
    background-color: rgb(255, 255, 255);
    border-radius: 5px;
    padding: 10px 20px 10px 20px;
}

.container {
    max-width: 1100px;
    margin: 40px auto;
    padding: 0 20px;
}

.card,
.hero-card {
    background: white;
    border-radius: 16px;
    padding: 24px;
    margin-bottom: 24px;

    box-shadow:
        0 4px 12px rgba(0,0,0,.05);
}

.hero-card {
    text-align: center;
}

.primary-btn {
    background: #0057b8;
    color: white;
    border: none;
    border-radius: 10px;
    padding: 14px 24px;
    cursor: pointer;
    font-size: 1rem;
}

.primary-btn:hover {
    opacity: .9;
}

.secondary-btn {
    display: inline-block;
    text-decoration: none;
    padding: 12px 18px;
    border-radius: 10px;
    border: 1px solid #0057b8;
    color: #0057b8;
}

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

}
.sensor-info{
    background: white;
    margin-top: 10px;
    text-align: center;
    border-radius: 16px;
    padding: 20px 0px 20px 0px;

    box-shadow:
        0 4px 12px rgba(0,0,0,.05);
}
.sensor-table {
    width: 50%;
    margin: 0 auto; /* centers the table horizontally */
    border-style: solid;
    border-color: #0057b8; 
    border-collapse: separate;
    border-radius: 10px;
    border-spacing: 0;
    overflow: hidden;
}

.sensor-table th {
    background: #0057b8;
    color: white;
    text-align: center;
    padding: 14px;
}

.sensor-table td {
    padding: 14px;
    text-align: center;
}

.sensor-table tr {
    background: white;
}

.sensor-table tr:hover {
    background: #edf4ff;
}

.additional-card {
    text-align: center;
    margin-top: 10px;
    padding: 10px 10px 10px 10px;
}
.logo-container {
    margin-top: 30px;
    display: flex;
    justify-content: center;
    gap: 40px;
    border-top-width: 4px;
    border-top-style: solid;
    border-top-color: #0057b8;
    justify-content: center;  /* centers the whole logo-group */
}

.logo {
    height: 150px;
    margin-top: 10px;
}