/* =========================
   RESET & BASE
========================= */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    background-color: #0A2540;
    color: #0f172a;
    font-family: Arial, sans-serif;
    min-height: 100vh;
}

/* =========================
   HEADER (MOBILE FIRST)
========================= */
header {
    background-color: #0f172a;
    color: #ffffff;
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    padding: 12px;
    font-size: 18px;
    font-weight: bold;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
}

#lg_name {
    flex: 100%;
    text-align: center;
    cursor: pointer;
}

#searchbar {
    flex: 100%;
    display: flex;
    gap: 8px;
    justify-content: center;
}

#searchInput {
    width: 100%;
    max-width: 260px;
    padding: 8px;
    border: none;
    border-radius: 4px;
}

#searchButton {
    padding: 8px 14px;
    border: none;
    border-radius: 4px;
    background-color: #1E40AF;
    color: white;
    cursor: pointer;
}

#searchButton:hover {
    background-color: #3B82F6;
}

/* =========================
   MAIN CONTENT
========================= */
main {
    padding: 16px;
}

.app_card {
    background-color: #ffffff;
    border-radius: 8px;
    box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
    padding: 16px;
    margin-bottom: 16px;
    display: flex;
    flex-direction: column;
    gap: 12px;
    text-align: center;
}

.logo img {
    width: 90px;
    height: 90px;
    border-radius: 16px;
}

.app_name {
    font-size: 18px;
    font-weight: bold;
}

.app_version,
.release_date {
    font-size: 14px;
    color: #555555;
}

.install_button {
    width: 100%;
}

.install_button .pwa_install {
    width: 100%;
    padding: 10px;
    border: none;
    border-radius: 4px;
    background-color: #10B981;
    color: white;
    cursor: pointer;
}

.install_button .pwa_install:hover {
    background-color: #34D399;
}

/* =========================
   FOOTER (MOBILE)
========================= */
footer {
    background-color: #0f172a;
    color: #cccccc;
    text-align: center;
    padding: 10px;
    margin-top: 20px;
}

#v {
    font-size: 14px;
}

/* =========================
   TABLET (≥ 768px)
========================= */
@media (min-width: 768px) {

    header {
        flex-wrap: nowrap;
        font-size: 20px;
        align-items: center;
    }

    #lg_name {
        flex: 1;
        text-align: left;
    }

    #searchbar {
        flex: 2;
        justify-content: flex-end;
    }

    #searchInput {
        max-width: 240px;
    }

    .app_card {
        flex-direction: row;
        text-align: left;
        align-items: center;
        gap: 20px;
    }

    .install_button {
        width: auto;
        margin-left: auto;
    }

    .install_button .pwa_install {
        width: auto;
        padding: 10px 20px;
    }

    footer {
        position: fixed;
        bottom: 0;
        width: 100%;
    }
}

/* =========================
   DESKTOP / LAPTOP (≥ 1024px)
========================= */
@media (min-width: 1024px) {

    header {
        font-size: 22px;
    }

    main {
        max-width: 1100px;
        margin: auto;
    }

    .app_card {
        padding: 20px;
        gap: 30px;
    }

    .app_name {
        font-size: 20px;
    }

    #searchInput {
        max-width: 300px;
    }
}