/* =========================================================
   GOOGLE FONT
========================================================= */

@import url("https://fonts.googleapis.com/css2?family=Poppins:wght@300;400;500;600;700&display=swap");


/* =========================================================
   RESET
========================================================= */

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: "Poppins", sans-serif;
}


/* =========================================================
   BODY
========================================================= */

body {
    min-height: 100vh;

    display: flex;
    justify-content: center;
    align-items: center;

    background:
        radial-gradient(
            circle at top left,
            rgba(255, 255, 255, 0.35),
            transparent 35%
        ),
        linear-gradient(
            135deg,
            #74ebd5,
            #acb6e5
        );

    color: white;

    overflow-x: hidden;
}


/* =========================================================
   MAIN CONTAINER
========================================================= */

.container {
    width: 100%;
    max-width: 1150px;

    padding: 25px;

    display: flex;
    flex-direction: column;

    align-items: center;

    gap: 22px;

    position: relative;
    z-index: 2;
}


/* =========================================================
   HEADER
========================================================= */

header {
    text-align: center;
    color: white;
}

header h1 {
    font-size: 3rem;
    font-weight: 700;

    letter-spacing: -1px;

    text-shadow:
        0 5px 15px rgba(0, 0, 0, 0.25);
}

header p {
    margin-top: 5px;

    font-size: 15px;

    opacity: 0.85;
}


/* =========================================================
   GAME + SETTINGS LAYOUT
========================================================= */

.game-layout {
    width: 100%;

    display: flex;

    flex-direction: row;

    align-items: flex-start;

    gap: 22px;

    /*
       Move the complete game area
       slightly toward the left.
    */
    justify-content: flex-start;

    padding-left: 70px;
}


/* =========================================================
   GAME BOX
========================================================= */

.game-box {
    position: relative;

    width: 480px;
    height: 700px;

    flex-shrink: 0;

    border-radius: 25px;

    overflow: hidden;

    background:
        rgba(255, 255, 255, 0.12);

    backdrop-filter: blur(18px);

    -webkit-backdrop-filter: blur(18px);

    border:
        2px solid rgba(255, 255, 255, 0.25);

    box-shadow:
        0 20px 50px rgba(0, 0, 0, 0.25);
}


/* =========================================================
   CANVAS
========================================================= */

#gameCanvas {
    width: 100%;
    height: 100%;

    display: block;

    background:
        linear-gradient(
            #69d2ff,
            #ffffff
        );

    touch-action: manipulation;
}


/* =========================================================
   MENU / GAME OVER
========================================================= */

#menu,
#gameOver {
    position: absolute;

    inset: 0;

    display: flex;

    flex-direction: column;

    justify-content: center;
    align-items: center;

    gap: 12px;

    background:
        rgba(0, 0, 0, 0.42);

    color: white;

    backdrop-filter: blur(10px);

    -webkit-backdrop-filter: blur(10px);

    transition: 0.3s ease;

    text-align: center;

    padding: 25px;
}

#gameOver {
    display: none;
}

#menu h2,
#gameOver h2 {
    font-size: 2.4rem;

    margin-bottom: 10px;

    text-shadow:
        0 4px 12px rgba(0, 0, 0, 0.3);
}


/* =========================================================
   BUTTONS
========================================================= */

button {
    border: none;

    padding: 13px 32px;

    border-radius: 50px;

    cursor: pointer;

    font-size: 16px;

    font-weight: 600;

    color: white;

    background:
        linear-gradient(
            45deg,
            #ff9800,
            #ff5f6d
        );

    transition:
        transform 0.2s ease,
        box-shadow 0.2s ease;

    box-shadow:
        0 10px 20px rgba(0, 0, 0, 0.22);
}

button:hover {
    transform: translateY(-3px);

    box-shadow:
        0 14px 25px rgba(0, 0, 0, 0.28);
}

button:active {
    transform: scale(0.96);
}


/* =========================================================
   SETTINGS PANEL
========================================================= */

.settings {
    width: 250px;

    flex-shrink: 0;

    display: flex;

    flex-direction: column;

    gap: 16px;

    padding: 22px;

    border-radius: 20px;

    background:
        rgba(255, 255, 255, 0.18);

    backdrop-filter: blur(20px);

    -webkit-backdrop-filter: blur(20px);

    border:
        1px solid rgba(255, 255, 255, 0.25);

    box-shadow:
        0 15px 35px rgba(0, 0, 0, 0.16);

    color: white;
}

.settings h2 {
    font-size: 20px;

    margin-bottom: 2px;
}

.settings p {
    font-size: 13px;

    opacity: 0.8;
}


/* =========================================================
   SETTINGS LABELS
========================================================= */

.settings label {
    font-size: 13px;

    font-weight: 500;

    opacity: 0.9;
}


/* =========================================================
   FILE INPUT
========================================================= */

.settings input[type="file"] {
    width: 100%;

    margin-top: 5px;

    padding: 8px;

    border-radius: 10px;

    background:
        rgba(255, 255, 255, 0.12);

    color: white;

    border:
        1px solid rgba(255, 255, 255, 0.2);

    font-size: 12px;
}

.settings input[type="file"]::file-selector-button {
    border: none;

    padding: 7px 10px;

    margin-right: 8px;

    border-radius: 8px;

    background: white;

    color: #444;

    cursor: pointer;

    font-weight: 600;
}


/* =========================================================
   THEME BUTTONS
========================================================= */

.settings button {
    width: 100%;
}

.theme-buttons {
    display: grid;

    grid-template-columns:
        repeat(3, 1fr);

    gap: 7px;
}

.theme-buttons button {
    padding: 9px 5px;

    font-size: 12px;

    border-radius: 12px;

    background:
        rgba(255, 255, 255, 0.18);

    box-shadow: none;

    border:
        1px solid rgba(255, 255, 255, 0.2);
}

.theme-buttons button:hover {
    background:
        rgba(255, 255, 255, 0.3);

    transform: translateY(-2px);
}


/* =========================================================
   DIVIDER
========================================================= */

.settings .divider {
    width: 100%;

    height: 1px;

    background:
        rgba(255, 255, 255, 0.2);
}


/* =========================================================
   FOOTER
========================================================= */

footer {
    color: white;

    opacity: 0.75;

    font-size: 13px;

    text-align: center;
}


/* =========================================================
   FLOATING CLOUDS
========================================================= */

body::before,
body::after {
    content: "";

    position: fixed;

    width: 350px;
    height: 120px;

    background:
        rgba(255, 255, 255, 0.16);

    border-radius: 100px;

    filter: blur(12px);

    pointer-events: none;

    z-index: 0;

    animation:
        clouds 30s linear infinite;
}

body::before {
    top: 80px;
    left: -400px;
}

body::after {
    top: 220px;
    left: -500px;

    animation-duration: 45s;
}


/* =========================================================
   CLOUD ANIMATION
========================================================= */

@keyframes clouds {

    from {
        transform:
            translateX(0);
    }

    to {
        transform:
            translateX(1800px);
    }

}


/* =========================================================
   TABLET
========================================================= */

@media (max-width: 850px) {

    body {
        align-items: flex-start;

        overflow-y: auto;
    }

    .container {
        padding: 20px 15px;
    }

    .game-layout {
        flex-direction: column;

        align-items: center;

        padding-left: 0;
    }

    .settings {
        width: 480px;

        max-width: 95vw;

        order: -1;
    }

}


/* =========================================================
   MOBILE
========================================================= */

@media (max-width: 600px) {

    .container {
        padding: 15px 10px;

        gap: 15px;
    }

    header h1 {
        font-size: 2rem;
    }

    header p {
        font-size: 12px;
    }

    .game-box {
        width: 95vw;

        height: 75vh;

        min-height: 500px;

        max-height: 700px;

        border-radius: 20px;
    }

    .settings {
        width: 95vw;

        padding: 18px;
    }

    .settings h2 {
        font-size: 18px;
    }

    button {
        font-size: 14px;

        padding: 11px 25px;
    }

    .theme-buttons button {
        font-size: 11px;
    }

}


/* =========================================================
   VERY SMALL PHONES
========================================================= */

@media (max-width: 400px) {

    .game-box {
        height: 70vh;

        min-height: 450px;
    }

    header h1 {
        font-size: 1.7rem;
    }

    .settings {
        padding: 15px;
    }

}