/*
 * CSS Credits:
 * All credit to https://codepen.io/jcubic/pen/BwBYOZ
 */

body {
    margin: 0;
    background: black;
}

.terminal img[src*="blob:"], .terminal video {
    max-width: 100%;
}

#terminal {
    height: var(--tv-height);
}

/* glow */

.terminal {
    text-shadow: 0 0.2rem 1rem #0c7b46;
}

:root {
    --background: #031e11;
    --tv-height: 513px; /* 默认高度 */
}

@media (min-width: 800px) {
    :root {
        --size: 1.2;
    }
}
@media (min-width: 1200px) {
    :root {
        --size: 1.5;
    }
}
/* to see yourself like in a mirror */

.self {
    transform: scale(-1, 1);
}

.flicker {
    position: fixed;
    top: 0;
    left: 0;
    bottom: 0;
    right: 0;
    background: rgba(18, 16, 16, 0.2);
    opacity: 0;
    z-index: 1000;
    pointer-events: none;
    animation: flicker 0.12s infinite;
}

@keyframes flicker {
    0% {
        opacity: 0.552;
    }
    5% {
        opacity: 0.48287;
    }
    10% {
        opacity: 0.59134;
    }
    15.0% {
        opacity: 0.79543;
    }
    20% {
        opacity: 0.75134;
    }
    25% {
        opacity: 0.1956;
    }
    30.0% {
        opacity: 0.90687;
    }
    35% {
        opacity: 0.122;
    }
    40% {
        opacity: 0.62254;
    }
    45% {
        opacity: 0.56977;
    }
    50% {
        opacity: 0.9925;
    }
    55.0% {
        opacity: 0.55487;
    }
    60.0% {
        opacity: 0.16607;
    }
    65% {
        opacity: 0.12353;
    }
    70% {
        opacity: 0.2214;
    }
    75% {
        opacity: 0.67908;
    }
    80% {
        opacity: 0.97163;
    }
    85.0% {
        opacity: 0.1275;
    }
    90% {
        opacity: 0.37186;
    }
    95% {
        opacity: 0.24475;
    }
    100% {
        opacity: 0.37221;
    }
}

.scanlines {
    top: 0;
    left: 0;
    height: var(--tv-height);
    width: 100%;
    background: linear-gradient(
            to bottom,
            rgba(255, 255, 255, 0),
            rgba(255, 255, 255, 0) 50%,
            rgba(0, 0, 0, .2) 70%,
            rgba(0, 0, 0, .6)
    );
    background-size: 100% .3rem;
    position: fixed;
    pointer-events: none;
}

.scanlines:before {
    position: absolute;
    top: 0px;
    width: 100%;
    height: 5px;
    background: #fff;
    background: linear-gradient(to bottom,
    rgba(255, 0, 0, 0) 0%,
    rgba(255, 250, 250, 1) 50%,
    rgba(255, 255, 255, 0.98) 51%,
    rgba(255, 0, 0, 0) 100%
    ); /* W3C */
    opacity: .1;
}

.scanlines:after {
    box-shadow: 0 2px 6px rgba(25, 25, 25, 0.2),
    inset 0 1px rgba(50, 50, 50, 0.1),
    inset 0 3px rgba(50, 50, 50, 0.05),
    inset 0 3px 8px rgba(64, 64, 64, 0.05),
    inset 0 -5px 10px rgba(25, 25, 25, 0.1);
}

#terminal:focus-within ~ .scanlines:before {
    content: '';
    display: block;
    animation: vline calc(var(--time, 2) * 1s) linear infinite;
}

/*
 * MS Edge don't support focus-within and css vars
 * inside pseudo selector
 */
@supports (-ms-ime-align:auto) {
    .scanlines:before {
        content: '';
        animation: vline 3s linear infinite;
    }
}
@keyframes vline {
    to {
        transform: translate(0, var(--tv-height))
    }
}
/* turn off animation */

.tv {
    height: var(--tv-height);
    position: relative;
}

.tv.collapse {
    animation: size 2s ease-out;
    animation-fill-mode: forwards;
}

.tv.collapse:before {
    content: '';
    display: block;
    height: var(--tv-height);
    position: absolute;
    left: 0;
    right: 0;
    bottom: 0;
    top: 0;
    background: white;
    z-index: 1;
    opacity: 0;
    animation: opacity 2s ease-out;
    animation-fill-mode: forwards;
}

@keyframes opacity {
    to {
        opacity: 1;
    }
}
@keyframes size {
    50% {
        transform: scaleX(calc(1 / var(--width)));
        opacity: 1;
    }
    98% {
        transform: scaleX(calc(1 / var(--width))) scaleY(calc(1 / var(--height)));
        opacity: 1;
    }
    100% {
        transform: scaleX(calc(1 / var(--width))) scaleY(calc(1 / var(--height)));
        opacity: 0;
    }
}

#terminal {
    padding-bottom: 36px;
}

.collection {
    position: absolute;
    bottom: 0;
    left: 0;
    padding: 10px;
}

.noise {
    position: fixed;
    top: 0;
    left: 0;
    bottom: 0;
    right: 0;
    z-index: 2000;
    opacity: 0.05;
    pointer-events: none;
    background: repeating-radial-gradient(#000 0 0.0001%, #fff 0 0.0002%) 50% 0/2500px 2500px,
    repeating-conic-gradient(#000 0 0.0001%, #fff 0 0.0002%) 50% 50%/2500px 2500px;
    background-blend-mode: difference;
    animation: shift .2s infinite alternate;
}

@keyframes shift {
    100% {
        background-position: 50% 0, 50% 60%;
    }
}
@media (prefers-reduced-motion) {
    .noise, .flicker, .scanlines:before {
        animation: none !important;
    }
}