* {
    box-sizing: border-box;
    -webkit-tap-highlight-color: transparent;
}


html,
body {

    margin: 0;

    padding: 0;

    width: 100%;

    height: 100%;

    overflow: hidden;

    background: #080a0f;

    color: white;

    font-family:
        Arial,
        Helvetica,
        sans-serif;

    user-select: none;

    touch-action: none;
}


#game {

    position: relative;

    width: 100%;

    height: 100%;

    overflow: hidden;
}


#gameCanvas {

    position: absolute;

    left: 0;

    top: 0;

    width: 100%;

    height: 100%;

    display: block;
}



/* =========================
   HUD
========================= */

#hud {

    position: absolute;

    top: 18px;

    left: 18px;

    display: flex;

    gap: 10px;

    z-index: 10;
}


.hudItem {

    background:
        rgba(10, 12, 18, 0.88);

    border:
        1px solid rgba(255,255,255,0.12);

    border-radius: 12px;

    padding:
        10px 15px;

    font-size: 15px;

    box-shadow:
        0 5px 20px rgba(0,0,0,0.3);
}


.hudItem span {

    font-weight: bold;

    margin-left: 5px;
}



/* =========================
   PUZZLE
========================= */

#puzzlePanel {

    position: absolute;

    top: 18px;

    right: 18px;

    width: 310px;

    max-height: 70vh;

    overflow-y: auto;

    z-index: 10;

    background:
        rgba(10,12,18,0.92);

    border:
        1px solid rgba(255,255,255,0.12);

    border-radius: 15px;

    padding: 18px;

    box-shadow:
        0 10px 30px rgba(0,0,0,0.4);
}


.panelTitle {

    font-size: 18px;

    font-weight: bold;

    margin-bottom: 12px;

    text-align: center;
}


#puzzleText {

    font-size: 14px;

    line-height: 1.6;

    white-space: pre-line;

    color: #ddd;
}



/* =========================
   MESSAGE
========================= */

#message {

    position: absolute;

    left: 50%;

    bottom: 75px;

    transform:
        translateX(-50%);

    z-index: 10;

    background:
        rgba(0,0,0,0.78);

    padding:
        11px 20px;

    border-radius: 10px;

    font-size: 15px;

    text-align: center;

    pointer-events: none;
}



/* =========================
   INTERACTION
========================= */

#interactButton {

    position: absolute;

    left: 50%;

    bottom: 125px;

    transform:
        translateX(-50%);

    z-index: 20;

    display: none;

    border: none;

    border-radius: 12px;

    padding:
        13px 24px;

    background: #ffffff;

    color: #111;

    font-size: 15px;

    font-weight: bold;

    cursor: pointer;
}


#interactButton.show {

    display: block;
}


#interactButton:active {

    transform:
        translateX(-50%)
        scale(0.96);
}



/* =========================
   PC CONTROLS
========================= */

#pcControls {

    position: absolute;

    left: 50%;

    bottom: 18px;

    transform:
        translateX(-50%);

    z-index: 10;

    color: rgba(255,255,255,0.45);

    font-size: 12px;

    text-align: center;

}



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

#mobileControls {

    display: none;

}


@media (pointer: coarse) {

    #pcControls {

        display: none;

    }


    #mobileControls {

        display: block;

        position: absolute;

        left: 20px;

        bottom: 20px;

        width: 140px;

        height: 140px;

        z-index: 20;

    }


    #joystick {

        position: absolute;

        left: 0;

        top: 0;

        width: 130px;

        height: 130px;

        border-radius: 50%;

        background:
            rgba(255,255,255,0.10);

        border:
            2px solid rgba(255,255,255,0.15);
    }


    #joystickStick {

        position: absolute;

        left: 40px;

        top: 40px;

        width: 50px;

        height: 50px;

        border-radius: 50%;

        background:
            rgba(255,255,255,0.45);
    }


    #interactButton {

        bottom: 30px;

        right: 20px;

        left: auto;

        transform: none;

        border-radius: 50%;

        width: 85px;

        height: 85px;

        padding: 0;

        font-size: 12px;

    }


    #interactButton:active {

        transform:
            scale(0.95);

    }


    #message {

        bottom: 165px;

        width: 80%;

    }


    #puzzlePanel {

        top: auto;

        right: 10px;

        bottom: 175px;

        width: 220px;

        max-height: 190px;

        padding: 12px;

    }


    .panelTitle {

        font-size: 15px;

    }


    #puzzleText {

        font-size: 12px;

    }


    #hud {

        top: 10px;

        left: 10px;

    }


    .hudItem {

        padding:
            8px 11px;

        font-size: 13px;

    }

}



/* =========================
   START SCREEN
========================= */

#startScreen {

    position: absolute;

    inset: 0;

    z-index: 100;

    display: flex;

    justify-content: center;

    align-items: center;

    background:
        radial-gradient(
            circle at center,
            #1a1e29,
            #050609 70%
        );
}


.startBox {

    width: min(90%, 420px);

    padding: 45px 30px;

    text-align: center;

    background:
        rgba(12,14,20,0.94);

    border:
        1px solid rgba(255,255,255,0.15);

    border-radius: 20px;

    box-shadow:
        0 20px 60px rgba(0,0,0,0.6);
}


.startBox h1 {

    margin: 0;

    font-size: 46px;

    letter-spacing: 6px;
}


.startBox p {

    color: #aaa;

    line-height: 1.7;

    margin:
        18px 0 30px;
}


#startButton {

    border: none;

    border-radius: 12px;

    padding:
        14px 40px;

    font-size: 16px;

    font-weight: bold;

    cursor: pointer;
}


#startButton:active {

    transform: scale(0.96);
}