html {
    scrollbar-width: thin;
    scrollbar-color: #008 #0d80ff;
    scroll-behavior: smooth;
}

body {
    display: flex;
    flex-direction: column;
    text-align: center;
    justify-content: flex-start;
    max-width: 100%;
    min-height: 100%;
    background: linear-gradient(90deg, rgba(0, 12, 100, 1) 0%, rgba(40, 37, 118, 1) 50%, rgba(80, 48, 102, 1) 100%);
}

html,
body {
    height: 100%;
    margin: 0;
}

div#contents {
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    width: 100%;
    max-width: 100%;
    margin: 0 auto;
    gap: 20px;
}

#header {
    position: relative;
    background-color: rgba(46, 185, 250, 0.95);
    top: 0;
    padding: 1%;
    border-radius: 0 0 15px 15px;
    width: 98% !important;
    max-width: 100%;
    color: navy;
    font-family: sans-serif, 'Courier New', Courier, monospace;
    box-shadow: 0px 2px 20px 3px cyan,
        0px 0px 15px 1px rgb(0, 0, 70);
    transition: all 0.3s ease-in-out;
}

#header:hover {
    background-color: rgb(16, 155, 220);
    box-shadow: 0px 7px 20px 3px cyan,
        0px 5px 15px 1px rgb(0, 0, 70);
}

#quote {
    font-weight: bold;
}

#stars-container {
    position: fixed;
    top: 0;
    left: 0;
    width: 100vw;
    height: 100vh;
    overflow: hidden;
    pointer-events: none;
    z-index: -2;
}

#moon {
    position: fixed;
    left: 5%;
    width: 80px;
    height: 80px;
    background: radial-gradient(circle, #ffffcc, #cccccc);
    border-radius: 50%;
    z-index: -100;
    animation: moonGlow 5s infinite linear;
    transition: transform 0.1s linear;
}

.shooting-stars {
    top: auto;
    position: fixed;
    width: 3px;
    height: 3px;
    background: white;
    box-shadow: 0px 0px 10px white;
    opacity: 0.8;
    transition: transform 0.1s ease-out;
}

#still-stars-container {
    position: fixed;
    top: 0;
    left: 0;
    width: 100vw;
    height: 100vh;
    overflow: hidden;
    pointer-events: none;
    z-index: -1;
}

.still-star {
    position: absolute;
    background: white;
    border-radius: 50%;
    box-shadow: 0 0 5px white;
    animation: twinkle 2s infinite alternate;
    transition: transform 0.1s ease-out;
    z-index: -1n;
}

div#game-area {
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    width: 100%;
    gap: 20px;
}

div#game-grid {
    width: 90vmin;
    height: 90vmin;
    max-width: 400px;
    max-height: 400px;
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    grid-template-rows: repeat(3, 1fr);
    gap: 10px;
    background: radial-gradient(circle farthest-side at 30% 70%, #1a2a6c 12.5%, #090979 92.4%);
    padding: 10px;
    border-radius: 10px;
    box-shadow: 0px 4px 10px rgba(0, 0, 0, 0.5);
}

div.cell {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    width: 100%;
    height: 100%;
    border-radius: 5%;
    background: linear-gradient(45deg, #0b1a40, #1a237e);
    box-shadow: inset 2px 2px 6px rgba(255, 255, 255, 0.08), inset -2px -2px 6px rgba(0, 0, 0, 0.3), 0px 0px 6px rgba(0, 128, 255, 0.3);
    transition: all 0.3s ease-in-out;
}

div.cell:hover {
    transform: scale(1.02) translateY(-5px);
}

div.cell.X {
    background: radial-gradient(circle, #00ffd9 0%, #0a1e3f 60%, #0a1e3f 80%);
    color: #29fff4;
    text-shadow: 0 0 10px #00b196;
    font-size: 4rem;
    font-family: sans-serif, 'Courier New', Courier, monospace;
    font-weight: bold;
}

div.cell.O {
    background: radial-gradient(circle, #ffc400 0%, #4a2f00 60%, #4a2f00 80%);
    color: #ff4901;
    text-shadow: 0 0 10px #ffa000;
    font-size: 4rem;
    font-family: sans-serif, 'Courier New', Courier, monospace;
    font-weight: bold;
}

.form-control {
    width: 250px;
    height: 30px;
    max-width: 90%;
    padding: 2%;
    border: 2px solid navy;
    border-radius: 8px;
    font-size: 16px;
    color: navy;
    background-color: #e6f0ff;
    outline: none;
    transition: all 0.3s ease-in-out;
}

.form-control::placeholder {
    color: #5a7bc2;
    opacity: 0.8;
}

.form-control:focus {
    border-color: #007bff;
    box-shadow: 0 0 8px #007bff;
}

#player {
    display: inline-flex;
    gap: 15px;
}

button#rename {
    padding: 10px 10px;
    height: fit-content;
}

button {
    font-size: 15px;
    font-weight: bold;
    color: #f0f8ff;
    background: #002855;
    padding: 10px 20px;
    border: none;
    border-radius: 8px;
    cursor: pointer;
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.3);
    transition: 0.3s, transform 0.2s;
}

button:hover {
    background: #004080;
    transform: scale(1.05);
    color: #f0f8ff !important;
}

button:active {
    background: #001f3f;
    transform: scale(0.95);
}

div#info, div#options {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    max-width: 100%;
    width: 50%;
    gap: 10px;
}

label {
    min-width: 15%;
    width: 40%;
    max-width: 90%;
    height: auto;
    background-color: #0a1e3f;
    border-radius: 5px;
    padding: 1% 5%;
    color: #ccc;
    font-family: sans-serif, 'Courier New', Courier, monospace;
    font-weight: 500;
    transition: all 0.3s ease-in-out;
    box-shadow: 0px 0px 10px 2px #aaa;
    transition: all 0.2s ease-in-out;
}

label:hover {
    background-color: #0b1a40;
    color: #fff;
    box-shadow: 0px 0px 15px 5px #aaa;
    transform: scale(1.05);
}

#copyright-footer {
    width: 100% !important;
    max-width: 98%;
    height: fit-content;
    max-height: fit-content;
    display: flex;
    flex-direction: row;
    background: rgba(50, 9, 95, 1);
    background: linear-gradient(0deg, rgba(50, 9, 95, 1) 0%, rgba(30, 116, 190, 1) 100%);
    background: -moz-linear-gradient(0deg, rgba(50, 9, 95, 1) 0%, rgba(30, 116, 190, 1) 100%);
    background: -webkit-linear-gradient(0deg, rgba(50, 9, 95, 1) 0%, rgba(30, 116, 190, 1) 100%);
    filter: progid: DXImageTransform.Microsoft.gradient(startColorstr="#32095F", endColorstr="#1E74BE", GradientType=1);
    position: fixed;
    padding: 1%;
    bottom: 0;
    border-radius: 25px 25px 0 0;
    font-family: sans-serif, 'Courier New', Courier, monospace;
    line-height: 145%;
    z-index: 10;
    overflow: hidden;
}

#footer-contents {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    width: 100%;
    max-width: 100%;
}

#copyright-footer p {
    color: #e0f7fa !important;
    text-shadow: 1px 1px 3px rgba(255, 15, 127, 0.856), 0px 0px 5px rgb(30, 117, 210) !important;
    font-weight: 500;
    transition: all 0.3s ease-in-out;
    background-color: transparent;
    margin: -10px;
}

.footer {
    transform: translateY(-2px) scale(1.05);
    color: #ffffff;
    text-shadow: 0 0 15px rgba(18, 9, 95, 0.9), 0 0 30px rgba(30, 116, 210, 1), 0 0 45px rgb(75, 187, 231);
    background-color: transparent !important;
}

#footer-btn {
    font-size: small;
    font-weight: lighter;
    padding: 5px;
    position: absolute;
    top: 50%;
    transform: translate(80vw, -50%);
}

#options p {
    color: #31bbf1;
    font-family: sans-serif, 'Courier New', Courier, monospace;
    font-weight: 600;
    font-size: large;
    text-shadow: 0px 0px 10px rgba(20, 143, 225, 0.8), 0px 0px 20px rgba(30, 117, 210, 1), 0px 0px 45px #1a237e;
    width: fit-content;
    align-self: center;
    transition: all 0.2s ease-in-out;
}

#options p:hover {
    color: #76ffff;
    text-shadow: 0px 0px 10px rgba(77, 190, 255, 0.8), 0px 0px 20px rgb(30, 189, 210), 0px 0px 45px #283aff;
    transform: scale(1.05) translateY(-2px);
}

#options>div {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    background-color: rgba(0, 21, 92, 0.76);
    padding: 2%;
    border: 2px solid #bbb;
    border-radius: 15px;
    width: 100%;
    height: fit-content;
    gap: 15px;
}

#music-controls input[type="range"] {
    -webkit-appearance: none;
    appearance: none;
    width: 150px;
    height: 6px;
    background: linear-gradient(to right, #0004ff, #010035);
    border-radius: 5px;
    outline: none;
    transition: background 0.3s ease;
    cursor: pointer;
}

#music-controls input[type="range"]::-webkit-slider-thumb {
    -webkit-appearance: none;
    width: 18px;
    height: 18px;
    background: #00e1ff;
    border: 4px solid #21006d;
    border-radius: 50%;
    box-shadow: 0 0 5px var(--glow-size) rgba(2, 136, 209, 0.5);
    transition: all 0.2s ease-in-out;
}

#music-controls input[type="range"]::-webkit-slider-thumb:hover {
    transform: scale(1.2);
}

#music-controls input[type="range"]::-moz-range-thumb {
    height: 16px;
    width: 16px;
    background: #ffffff;
    border: 2px solid #0288d1;
    border-radius: 50%;
    box-shadow: 0 0 5px rgba(2, 136, 209, 0.5);
    transition: transform 0.2s;
}

#music-controls input[type="range"]::-moz-range-thumb:hover {
    transform: scale(1.2);
}

label#encoded-string {
    white-space: normal;
    overflow: hidden;
    text-overflow: ellipsis;
}

/* Animation defination */
@keyframes shootingStar {
    0% {
        transform: translate(-100, 0) rotate(-45deg);
        opacity: 1;
    }

    100% {
        transform: translate(300px, 150px) rotate(-45deg);
        opacity: 0;
    }
}

@keyframes twinkle {

    0%,
    100% {
        opacity: 1;
    }

    50% {
        opacity: 0.3;
    }
}

@keyframes moonGlow {
    0%, 100% {
        box-shadow: 0 0 20px 5px #ffffcc, inset 0 0 30px 20px #ffffcc;
    }
    50% {
        box-shadow: 0 0 30px 2px #ffffcc, inset 0 0 30px 20px #ffffbb, inset 0 0 30px 40px #ffffaa;
    }
}