body {
    margin: 0;
    font-family: "Segoe UI", Arial, sans-serif;
    background: #f8f9fb;
}

/* Top bar */
.top-bar {
    background: #ffffff;
    padding: 15px 30px;
    border-bottom: 1px solid #eee;
}

.top-bar img {
    height: 45px;
}

/* Center layout */
.main-wrapper {
   height: calc(100vh - 80px);
    display: flex;
    justify-content: center;
    align-items: center;
}

/* Join Card */
.join-box {
    width: 420px;
    background: #ffffff;
    padding: 35px;
    border-radius: 12px;
    box-shadow: 0 10px 35px rgba(0,0,0,0.08);
    text-align: center;
}

/* Main Join Button */
.join-main-btn {
    width: 100%;
    padding: 15px;
    font-size: 18px;
    border: none;
    border-radius: 8px;
    background: #9b0056; /* Eugenix magenta */
    color: #ffffff;
    cursor: pointer;
}

/* Sliding Form */
.form-box {
    margin-top: 25px;
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.5s ease;
}

/* Active state */
.form-box.active {
    max-height: 300px;
}

.form-box input {
    width: 380px;
    padding: 12px;
    margin-top: 12px;
    border-radius: 6px;
    border: 1px solid #ccc;
}

/* Join submit */
.join-submit-btn {
    width: 100%;
    padding: 13px;
    margin-top: 15px;
    background: #9b0056;
    color: #fff;
    border: none;
    border-radius: 6px;
    cursor: pointer;
}

/* Message */
#message {
    margin-top: 12px;
    font-size: 14px;
}

/* ===============================
   RESPONSIVE STYLES
   =============================== */

/* Tablets (max-width: 768px) */
@media (max-width: 768px) {

    .top-bar {
        padding: 12px 20px;
        text-align: center;
    }

    .top-bar img {
        height: 40px;
    }

    .main-wrapper {
        padding: 20px;
    }

    .join-box {
        width: 100%;
        max-width: 420px;
        padding: 30px 25px;
    }

    .join-main-btn {
        font-size: 17px;
        padding: 14px;
    }

    .join-submit-btn {
        font-size: 15px;
        padding: 12px;
    }
}

/* Mobile (max-width: 480px) */
@media (max-width: 480px) {

    body {
        background: #ffffff; /* Zoom-like clean mobile */
    }

    .top-bar {
        padding: 10px 15px;
        border-bottom: 1px solid #eaeaea;
    }

    .top-bar img {
        height: 34px;
    }

    .main-wrapper {
        height: auto;
        min-height: calc(100vh - 70px);
        align-items: flex-start;
        padding-top: 40px;
    }

    .join-box {
        box-shadow: none;
        border-radius: 0;
        padding: 25px 20px;
    }

    .join-main-btn {
        font-size: 16px;
        padding: 13px;
        border-radius: 6px;
    }

    .form-box input {
        font-size: 14px;
        padding: 11px;
    }

    .join-submit-btn {
        font-size: 15px;
        padding: 12px;
        border-radius: 6px;
    }

    #message {
        font-size: 13px;
    }
}