<template>
  <div>
    <div class="bicycle-container">
      <div class="wheel back-wheel">
        <div class="tire"></div>
        <div class="rim"></div>
        <div class="spokes"></div>
        <div class="spokes"></div>
        <div class="hub"></div>
      </div>
      <div class="wheel front-wheel">
        <div class="tire"></div>
        <div class="rim"></div>
        <div class="spokes"></div>
        <div class="spokes"></div>
        <div class="hub"></div>
      </div>
      <div class="gear">
        <div class="gear-red"></div>
        <div class="tube pedal-tube"></div>
        <div class="pedal"></div>
      </div>
      <div class="tube chain-tube"></div>
      <div class="tube seat-tube-back"></div>
      <div class="tube seat-tube-front"></div>
      <div class="tube seat-tube-post"></div>
      <div class="tube top-tube"></div>
      <div class="tube top-handlebar-tube"></div>
      <div class="tube top-handlebar-tube2"></div>
      <div class="tube down-tube"></div>
      <div class="tube head-tube"></div>
      <div class="tube head-tube-post"></div>
      <div class="saddle"></div>
      <div class="handlebars"></div>
    </div>
    <div class="ground-container">
      <div class="ground ground1"></div>
      <div class="ground ground2"></div>
      <div class="ground ground3"></div>
    </div>
  </div>
</template>

<script>
export default {
  name: "BgLoadingBike"
}
</script>

<style lang="scss">
    * {
        margin: 0;
        padding: 0;
        box-sizing: border-box;
    }

    html, body {
        width: 100%;
        height: 100%;
    }

    body {
        background: #252525;
    }

    $primary: #151515;
    $secondary: crimson;
    $wheelRadius: 120px;
    $tubeHeight: 5px;
    $tubeWidth: 100px;
    $saddleWidth: 50px;
    $saddleHeight: 10px;

    .bicycle-container {
        position: absolute;
        margin: auto;
        top: 0;
        left: 0;
        right: 0;
        bottom: 0;
        max-width: 350px;
        height: 300px;
        overflow: hidden;
        .wheel {
            position: absolute;
            margin: auto;
            top: 0;
            bottom: 0;
            width: $wheelRadius;
            height: $wheelRadius;
            box-shadow: 0 10px 15px -12px rgba(0, 0, 0, 0.3);
            .tire {
                position: absolute;
                margin: auto;
                top: 0;
                right: 0;
                bottom: 0;
                left: 0;
                width: inherit;
                height: inherit;
                border-radius: 50%;
                border: 10px solid $primary;
                z-index: 2;
            }
            .rim {
                position: absolute;
                margin: auto;
                top: 0;
                right: 0;
                bottom: 0;
                left: 0;
                width: $wheelRadius*0.95;
                height: $wheelRadius*0.95;
                border-radius: 50%;
                border: 10px solid $secondary;
                z-index: 1;
            }
            .spokes {
                position: absolute;
                margin: auto;
                top: 0;
                right: 0;
                bottom: 0;
                left: 0;
                width: $wheelRadius*0.65;
                height: $wheelRadius*0.65;
                border-radius: 50%;
                border-left: 3px solid transparent;
                border-right: 3px solid transparent;
                border-top: 3px solid $secondary;
                z-index: 1;
                animation: rt 2s infinite linear;
                background: rgba(200, 100, 100, 0.1);
                &:nth-of-type(3) {
                    border-left: 3px solid transparent;
                    border-right: 3px solid transparent;
                    border-bottom: 3px solid $secondary;
                }
            }
            .hub {
                position: absolute;
                margin: auto;
                top: 0;
                right: 0;
                bottom: 0;
                left: 0;
                width: $wheelRadius*0.2;
                height: $wheelRadius*0.2;
                border-radius: 50%;
                background: $secondary;
            }
        }
        .back-wheel {
            left: 0;
        }
        .front-wheel {
            right: 0;
        }
        .gear {
            position: absolute;
            margin: auto;
            top: 0;
            bottom: 0;
            left: calc(#{$wheelRadius} + #{$wheelRadius*0.33});
            width: $wheelRadius*0.3;
            height: $wheelRadius*0.3;
            border-radius: 50%;
            background: $primary;
            z-index: 4;
            animation: rt 3s infinite linear;
            .gear-red {
                position: absolute;
                margin: auto;
                top: 0;
                right: 0;
                bottom: 0;
                left: 0;
                width: $wheelRadius*0.2;
                height: $wheelRadius*0.2;
                border-radius: 50%;
                border: 3px solid $secondary;
            }
            .pedal-tube {
                position: absolute;
                margin: auto;
                top: -30px;
                right: 0;
                bottom: 0;
                left: 0;
                transform: rotate(-90deg);
                width: $tubeWidth*0.2;
            }
            .pedal {
                position: absolute;
                margin: auto;
                top: -50px;
                right: 0;
                bottom: 0;
                left: 0;
                width: 20px;
                height: 5px;
                background: $secondary;
                border-radius: 5px;
                z-index: 3;
            }
        }
        .tube {
            position: absolute;
            margin: auto;
            top: 0;
            bottom: 0;
            height: $tubeHeight;
            border-radius: $tubeHeight;
            background: $primary;
            z-index: 3;
        }
        .chain-tube {
            left: calc(#{$wheelRadius} / 2);
            width: $tubeWidth*1.2;
        }
        .seat-tube-back {
            left: calc(#{$wheelRadius} / 2);
            transform-origin: left;
            transform: rotate(-60deg);
            width: $tubeWidth*1.2;
        }
        .seat-tube-front {
            left: calc(#{$wheelRadius} / 2);
            transform-origin: right;
            transform: rotate(60deg);
            width: $tubeWidth*1.2;
        }
        .seat-tube-post {
            left: calc((#{$wheelRadius} / 2) - 20px);
            transform-origin: right;
            transform: rotate(60deg);
            background: $secondary;
            z-index: 1;
            height: calc(#{$tubeHeight} - 1px);
            width: $tubeWidth*1.4;
        }
        .top-tube {
            left: $wheelRadius;
            bottom: initial;
            top: 44px;
            width: $tubeWidth*1.13;
        }
        .top-handlebar-tube {
            right: $wheelRadius - 8px;
            bottom: initial;
            top: 25px;
            width: $tubeWidth*0.2;
            background: $secondary;
        }
        .top-handlebar-tube2 {
            right: $wheelRadius - 30px;
            bottom: initial;
            top: 25px;
            width: $tubeWidth*0.25;
            background: $primary;
            border-radius: 0%;
        }
        .down-tube {
            left: calc(#{$wheelRadius} + #{$wheelRadius*0.5});
            width: $tubeWidth;
            transform-origin: left;
            transform: rotate(-50deg);
        }
        .head-tube {
            right: calc(#{$wheelRadius} / 2);
            transform-origin: right;
            transform: rotate(60deg);
            width: $tubeWidth*1.2;
        }
        .head-tube-post {
            right: calc(#{$wheelRadius} / 2);
            transform-origin: right;
            transform: rotate(60deg);
            width: $tubeWidth*1.4;
            background: $secondary;
            z-index: 1;
            height: calc(#{$tubeHeight} - 1px);
        }
        .saddle {
            position: absolute;
            margin: auto;
            top: 20px;
            left: $tubeWidth*0.85;
            width: $saddleWidth;
            height: $saddleHeight;
            border-top-left-radius: 50%;
            border-top-right-radius: 100%;
            border-bottom-left-radius: 50%;
            background: $primary;
            z-index: 2;
        }
        .handlebars {
            position: absolute;
            margin: auto;
            top: 25px;
            right: calc(#{$tubeWidth} / 2 + 25px);
            width: 30px;
            height: 30px;
            border-top-right-radius: 50%;
            border-bottom-right-radius: 50%;
            border-top: $tubeHeight solid $primary;
            border-right: $tubeHeight solid $primary;
            border-bottom: $tubeHeight solid $secondary;
            z-index: 2;
        }
    }

    .ground-container {
        position: absolute;
        margin: auto;
        top: 0;
        right: 0;
        bottom: 0;
        left: 0;
        width: 600px;
        height: 200px;
        overflow: hidden;
        .ground {
            position: absolute;
            margin: auto;
            animation: mv infinite linear;
            background: $secondary;
            z-index: -1;
        }
        .ground1 {
            bottom: 0;
            right: -150px;
            width: 100px;
            height: 4px;
            border-radius: 10px;
            animation-duration: 3s;
            z-index: 5;
            &:before {
                content: "";
                position: absolute;
                margin: auto;
                top: -60px;
                left: 150px;
                width: 40px;
                height: 30px;
                border-top-right-radius: 60%;
                border-top-left-radius: 30%;
                border-bottom-left-radius: 20%;
                background: $primary;
            }
        }
        .ground2 {
            bottom: 70px;
            right: -250px;
            width: 100px;
            height: 2px;
            border-radius: 10px;
            animation-duration: 4s;
            &:before {
                content: "";
                position: absolute;
                margin: auto;
                top: -30px;
                left: 200px;
                width: 20px;
                height: 10px;
                border-top-right-radius: 60%;
                border-top-left-radius: 30%;
                border-bottom-left-radius: 20%;
                background: $primary;
            }
        }
        .ground3 {
            top: 50px;
            right: -300px;
            width: 100px;
            height: 2px;
            border-radius: 10px;
            animation-duration: 5s;
            &:before {
                content: "";
                position: absolute;
                margin: auto;
                top: 10px;
                left: -100px;
                width: 10px;
                height: 5px;
                border-top-right-radius: 60%;
                border-top-left-radius: 30%;
                border-bottom-left-radius: 20%;
                background: $primary;
            }
        }
    }

    @keyframes rt {
        100% {
            transform: rotate(360deg);
        }
    }

    @keyframes mv {
        100% {
            right: 900px;
        }
    }

</style>
