* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html,
body {
    font-size: 20px;
    font-family: 'Inter', sans-serif;
    width: 100%;
    min-height: 100%;
    background-color: #121213;
    color: white;
}

body {
    display: flex;
    flex-direction: column;
    min-height: 100vh;
}

/* HEADER STYLING */
header {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    user-select: none;
}

.heading {
    margin-top: 20px;
    margin-bottom: 20px;
}

hr {
    width: 100%;
    border: 0.001em solid #3a3a3c;
}

/* MAIN SECTION STYLING */
main {
    flex: 1;
    width: 100%;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: start;
}

.controls {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-top: 24px;
}

.difficulty-label {
    font-size: 14px;
    letter-spacing: 1px;
    text-transform: uppercase;
    color: #d7dadc;
}

.difficulty-select {
    min-width: 140px;
    height: 38px;
    padding: 0 12px;
    border: 1px solid #3a3a3c;
    border-radius: 8px;
    background-color: #121213;
    color: white;
    font-size: 16px;
    cursor: pointer;
}

.difficulty-select:disabled {
    cursor: wait;
    opacity: 0.7;
}

.game-board {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 5px;
    margin: 30px auto 10px auto;
}

.row {
    display: flex;
    gap: 5px;
}

.square {
    width: 50px;
    height: 50px;
    border: 2px solid #3a3a3c;
    color: white;
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: bold;
    text-transform: uppercase;
    user-select: none;
}

@keyframes flipAnimation {
    0% {
        transform: rotateX(0deg);
    }
    100% {
        transform: rotateX(360deg);
    }
}

.flip {
    animation: flipAnimation 0.7s ease-in-out;
}

.square.gray {
    background-color: rgb(56, 57, 58);
    border: none;
}

.square.green {
    background-color: rgb(81, 149, 52);
    border: none;
}

.square.yellow {
    background-color: rgb(199, 174, 35);
    border: none;
}

.square.scale-up {
    transform: scale(1.1);
}

.keyboard {
    font-size: 22px;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 8px;
    margin-top: 20px;
    font-weight: bold;
    user-select: none;
}

.key-row {
    display: flex;
    gap: 5px;
}

.key {
    width: 45px;
    height: 58px;
    display: flex;
    align-items: center;
    justify-content: center;
    background-color: #818384;
    border-radius: 4px;
    cursor: pointer;
}

.key.gray {
    background-color: rgb(56, 57, 58);
}

.key.green {
    background-color: rgb(81, 149, 52);
}

.key.yellow {
    background-color: rgb(199, 174, 35);
}

.key.large {
    width: 90px;
}

/* FOOTER STYLING */
footer {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
}

.footing {
    font-size: 11px;
    margin-top: 7px;
    margin-bottom: 7px;
    font-weight: 500;
    letter-spacing: 1px;
}

/* GLOBAL CLASSES */
.none {
    display: none;
}

/* POPUP STYLING */
.popup {
    position: fixed;
    top: 50%;
    left: 50%;
    /* transform: translate(-50%, -50%); */
    transform: translate(-50%, calc(-50% + 50px));
    background-color: #2d2d2d;
    display: none;
    flex-direction: column;
    flex-direction: start;
    align-items: center;
    width: 300px;
    height: 400px;
    padding: 20px;
    z-index: 9999;
    opacity: 0;
    transition: opacity 1s ease-out, transform 1s ease-out;
    border-radius: 5px;
    user-select: none;
    filter: blur(0px);
}

.popup.active {
    display: flex;
    opacity: 1;
    transform: translate(-50%, -50%);
}

.blurred {
    filter: blur(5px);
    pointer-events: none;
}

.fa-circle-check,
.fa-trophy,
.fa-circle-xmark,
.fa-skull-crossbones {
    font-size: 60px;
    display: inline;
}

.icons {
    margin-top: 10px;
    margin-bottom: 10px;
}

.congrats{
    margin-top: 10px;
    font-size: 30px;
    letter-spacing: 1px;
    line-height: 1.3;
    display: flex;
    flex-direction: row;
    align-items: center;
    justify-content: center;
    margin-bottom: 150px;
}

.congrats-2 {
    margin-top: 10px;
    font-size: 40px;
    letter-spacing: 2px;
    line-height: 1.1;
    display: flex;
    flex-direction: row;
    align-items: center;
    justify-content: center;
    margin-bottom: 140px;
}

.loss-word {
    font-size: 16px;
    letter-spacing: 1px;
    text-align: center;
}

.popup-loss .congrats-2 {
    margin-bottom: 40px;
}

.popup-loss .loss-word {
    margin-bottom: 100px;
}

.again {
    border: none;
    width: 140px;
    height: 30px;
    border-radius: 15px;
    cursor: pointer;
    font-weight: bold;
    color: #2d2d2d;
}

@media (max-width: 600px) {
    header,
    main,
    footer {
        width: 100%;
    }

    .controls {
        width: 100%;
        justify-content: center;
        padding: 0 12px;
        margin-top: 18px;
    }

    .difficulty-select {
        min-width: 120px;
        max-width: 180px;
        width: 100%;
    }

    .game-board {
        margin: 20px auto 8px auto;
        gap: 4px;
    }

    .row {
        gap: 4px;
    }

    .square {
        width: clamp(36px, 16vw, 46px);
        height: clamp(36px, 16vw, 46px);
        font-size: clamp(16px, 5vw, 20px);
    }

    .keyboard {
        width: 100%;
        padding: 0 6px 12px;
        font-size: clamp(14px, 4vw, 18px);
        --key-width: clamp(32px, 8.5vw, 40px);
        --key-gap: 4px;
        gap: 6px;
    }

    .key-row {
        width: 100%;
        gap: var(--key-gap);
        justify-content: center;
    }

    .key {
        width: var(--key-width);
        height: clamp(42px, 12vw, 54px);
    }

    .key.large {
        width: calc(var(--key-width) * 1.6);
    }

    .footing {
        width: 100%;
        text-align: center;
    }
}