:root {
    --success: #008000;
    --success-bg: #e0ffe0;
    --error: #d8000c;
    --error-bg: #ffe0e0;
    --ultra-success: #2a379c;
    --ultra-success-bg: #e2e6ff;
    --font-color: #0e0e0e;
    --white: #fff;
}

* {
    margin: 0;
    padding: 0;
}

body {
    font-family: 'Quicksand', sans-serif;
    font-size: 1.125rem;
    position: relative;
}

.outer-box {
    max-width: 600px;
    margin: 10vh auto;
    padding: 1.5rem;
    text-align: center;
    box-shadow: 0 0 8px 0 rgba(0, 0, 0, 0.20);
    position: relative;
}

h1 {
    font-size: clamp(1.5rem,4vw,2rem);
}

#countdown {
    display: flex;
    margin: 1.5rem 0 2.5rem 0;
    justify-content: center;
    gap: 1.25rem;
    text-align: center;
}

.circle-container {
    position: relative;
    width: 150px;
    height: 150px;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
}

.progress-circle {
    transform: rotate(-90deg);
    position: absolute;
}

.bg {
    fill: none;
    stroke: #ddd;
    stroke-width: 8;
}

.progress {
    fill: none;
    stroke: #008000;
    stroke-width: 8;
    stroke-linecap: round;
    transition: stroke-dashoffset 0.05s linear;
}

.number {
    font-size: 2.2rem;
    font-weight: 900;
    position: absolute;
    top: 39%;
    transform: translateY(-50%);
}

.label {
    font-size: 1.1rem;
    margin-top: 1.8125rem;
}

.input-box-wrapper {
    position: fixed;
    display: block;
    height: 100%;
    width: 100%;
    background: rgba(255, 255, 255, 0.9);
    top: 0;
    left: 0;
    pointer-events: none;
    opacity: 0;
    -webkit-transition: all 400ms ease;
    -moz-transition: all 400ms ease;
    -ms-transition: all 400ms ease;
    -o-transition: all 400ms ease;
    transition: all 400ms ease;
}

.show-dialog .input-box-wrapper {
    pointer-events: all;
    opacity: 1;
}

.input-box {
    max-width: 800px;
    margin: 10% auto;
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 3rem 2rem;
    align-items: center;
}

#datetime {
    padding: 0.8rem 1rem;
    font-family: 'Quicksand', sans-serif;
    font-size: 1rem;
    border-radius: unset;
    border: 2px solid var(--font-color);
    cursor: pointer;
}

#datetime:focus-visible {
    cursor: default;
}

.close-btn {
    font-size: 0;
    display: block;
    height: 50px;
    width: 50px;
    position: absolute;
    top: 10%;
    right: 25%;
    background-color: var(--white);
    box-shadow: 0 0 8px 0 rgba(0, 0, 0, 0.20);
    cursor: pointer;
}

.close-btn::before,
.close-btn::after {
    content: '';
    display: block;
    height: 35px;
    width: 2px;
    background-color: var(--font-color);
}

.close-btn::before {
    transform: rotate(45deg) translateX(23px) translateY(-13px);
}

.close-btn::after {
    transform: rotate(-45deg) translateX(37px) translateY(-2px);
}

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

.button {
    display: inline-block;
    cursor: pointer;
    font-family: 'Quicksand', sans-serif;
    background-color: var(--font-color);
    color: var(--white);
    font-size: 1.25rem;
    border: 2px solid var(--font-color);
    padding: 0.8rem 1rem;
    -webkit-transition: all 400ms ease;
    -moz-transition: all 400ms ease;
    -ms-transition: all 400ms ease;
    -o-transition: all 400ms ease;
    transition: all 400ms ease;
}

.button:hover {
    color: var(--font-color);
    background-color: var(--white);
}

#message {
    position: absolute;
    left: 0;
    bottom: -60px;
    padding: 10px;
    border-radius: 4px;
    visibility: hidden;
    opacity: 0;
    pointer-events: none;
    -webkit-transition: all 400ms ease;
    -moz-transition: all 400ms ease;
    -ms-transition: all 400ms ease;
    -o-transition: all 400ms ease;
    transition: all 400ms ease;
}

#message.visible {
    opacity: 1;
    visibility: unset;
    pointer-events: unset;
}

.success {
    background-color: var(--success-bg);
    color: var(--success);
    border: 1px solid var(--success);
}

.error {
    background-color: var(--error-bg);
    color: var(--error);
    border: 1px solid var(--error);
}

.ultra-success {
    background-color: var(--ultra-success-bg);
    color: var(--ultra-success);
    border: 1px solid var(--ultra-success);
}

#message.hide {
    opacity: 0;
    visibility: hidden;
    pointer-events: none;
}

.result {
    margin: 1.5rem 0 0 0;
}

.result #lastDate {
    font-weight: 900;
}

@media(max-width:619px) {
    .outer-box {
        margin: 0;
    }

    #countdown {
        flex-wrap: wrap;
    }

    #message {
        bottom: calc(50% - 22px);
        width: calc(95% - 20px);
        left: 10px;
    }
}

@media(max-width:1199px) {

    .input-box-wrapper {
        padding-top: 3.5rem;
    }

    .close-btn {
        top: 25px;
        right: 15px;
    }
}