:root {
    --border-size: clamp(8px, 1vw, 12px);
    --border-width-ratio: 0.9;
    --margin-ratio: 1.6;

    --height-margin-calc: calc(var(--margin-ratio) * var(--border-size));
    --width-margin-calc: calc(var(--height-margin-calc) * var(--border-width-ratio));

    --logo-width: clamp(380px, 45vw, 550px);
    
    --password-input-width: min(55vw, 700px);
    --password-error-msg-font-size: clamp(18px, 2vw, 24px);

    --password-input-font-size: clamp(18px, 2vw, 20px);
    --password-input-border: 4px;
    --password-input-padding: clamp(6px, 0.7vw, 10px);
    --password-input-gap: clamp(16px, 2vw, 20px);

    --password-area-gap: clamp(6px, 0.7vw, 10px);

    --main-area-padding: clamp(90px, 25vh, calc(75vh - 330px));
    --main-area-gap: clamp(18px, 1.8vw, 32px);

    --p-padding: clamp(8px, 0.9vw, 10px);

    --min-width: 360px;
    --min-height: 480px;
}

#kwiri-logo {
    width: var(--logo-width);
}

.password-input {
    display: flex;
    flex-direction: row;
    justify-content: center;
    align-items: center;
    gap: var(--password-input-gap);
}

.password-area p {
    font-size: var(--password-error-msg-font-size);
}

.password-area {
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    width: 100%;
    gap: var(--password-area-gap);
}

.main-area {
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;

    width: 100%;
    padding: var(--main-area-padding) 0;
    gap: var(--main-area-gap);
}

.main-box {
    display: flex;
    flex-direction: column;
    justify-content: space-between;
    align-items: end;

    height: calc(100vh - 2 * var(--height-margin-calc) - env(safe-area-inset-top));
    min-width: var(--min-width);
    min-height: var(--min-height);
    
    margin-top: calc(var(--height-margin-calc) + env(safe-area-inset-top));
    margin-bottom: var(--height-margin-calc);
    margin-left: var(--width-margin-calc);
    margin-right: var(--width-margin-calc);
    
    border-style: solid;
    border-width: var(--border-size);
    box-sizing: border-box;
    border-color: #D8D8D8;
}

input {
    width: var(--password-input-width);
    font-size: var(--password-input-font-size);
    padding: var(--password-input-padding) calc(1.5 * var(--password-input-padding));
    box-sizing: border-box;

    background-color: #F9F9F9;
    caret-color: #181818;
    
    border: var(--password-input-border) solid;
    border-color: #616161;
}

input:focus {
    outline: none;
}

input::placeholder {
    color: #616161;
}

button {
    width: max-content;
    font-size: var(--password-input-font-size);
    color: #181818;
    padding: var(--password-input-padding) calc(1.5 * var(--password-input-padding));
    box-sizing: border-box;

    border: var(--password-input-border) solid;
    border-color: #616161;
}

p {
    color: #FFFFFF;
    padding: var(--p-padding);
}

body {
    background-color: #181818;
    width: 100vw;
    height: calc(100% - env(safe-area-inset-top));
}

@media (max-width: 768px) {
    :root {
        --border-size: 8px;
        --border-width-ratio: 0.9;
        --margin-ratio: 1.6;

        --height-margin-calc: calc(var(--margin-ratio) * var(--border-size));
        --width-margin-calc: calc(var(--height-margin-calc) * var(--border-width-ratio));

        --logo-width: clamp(240px, 60vw, 380px);
        
        --password-input-width: clamp(220px, 55vw, 700px);
        --password-error-msg-font-size: 18px;

        --password-input-font-size: 18px;
        --password-input-border: 4px;
        --password-input-padding: 6px;
        --password-input-gap: 16px;

        --password-area-gap: 6px;
        
        --main-area-padding: clamp(90px, 25vh, calc(75vh - 330px));
        --main-area-gap: clamp(12px, 2.5vw, 18px);

        --p-padding: 8px;
        
        --min-width: 360px;
        --min-height: 480px;
    }
}