/* general */

* {
  font-family: 'Helvetica Neue', Helvetica, Arial, sans-serif;
  font-size: 14px;
  font-style: normal;
  font-variant: normal;
  font-weight: 400;
  line-height: 30px;
  box-sizing: border-box;
}

body {
  margin: 0;
  padding: 0;
}

@media (hover: none) and (max-width: 480px) {
  * {
    font-size: 16px;
    line-height: 32px;
  }
}

/* links */

a,
a:visited {
  color: black;
}

a:hover,
a:focus {
  color: #444;
}

/* scene */

.hmain {
  display: flex;
  justify-content: center;
  align-items: center;
  min-height: 100vh;
  max-width: 100vw;
}

.vmain {
  display: flex;
  justify-content: center;
  align-items: center;
  flex-direction: column;
  flex-grow: 0;
}

@media (hover: none) and (max-width: 480px) {
  .hmain {
    justify-content: start;
    align-items: start;
  }

  .vmain {
    justify-content: start;
  }
}

/* pre loading */

@keyframes blink {
  0% {
    background-color: white;
  }
  50% {
    background-color: #efefef;
  }
  100% {
    background-color: white;
  }
}

.header:empty {
  width: 400px;
  height: 29px;
  transition: all 0.5s ease-in-out;
  animation: blink normal 2s infinite ease-in-out;
  filter: blur(5px);
}

.topbar:empty {
  width: 802px;
  height: 31.383px;
  transition: all 0.5s ease-in-out;
  animation: blink normal 2s infinite ease-in-out;
  filter: blur(5px);
}

.main:empty {
  width: 802px;
  height: 602px;
  border: none;
  transition: all 0.5s ease-in-out;
  animation: blink normal 2s infinite ease-in-out;
  filter: blur(5px);
}

.bottombar:empty {
  width: 802px;
  height: 30px;
  transition: all 0.5s ease-in-out;
  animation: blink normal 2s infinite ease-in-out;
  filter: blur(5px);
}

.footer:empty {
  width: 500px;
  height: 40px;
  transition: all 0.5s ease-in-out;
  animation: blink normal 2s infinite ease-in-out;
  filter: blur(5px);
}

@media (hover: none) and (max-width: 480px) {
  .header:empty {
    width: 70vw;
    height: 56px;
  }

  .topbar:empty {
    width: calc(100vw - 10px);
    height: 127px;
  }

  .main:empty {
    width: 100vw;
    height: calc(75vw + 0.5px);
  }

  .bottombar:empty {
    width: calc(100vw - 10px);
    height: 67px;
  }

  .footer:empty {
    width: 80vw;
    height: 88px;
  }
}

/* header */

.header {
  height: 29px;
}

.header div,
.header span,
.header a {
  font-weight: 500;
}

@media (hover: none) and (max-width: 480px) {
  .header {
    height: auto;
  }

  .header div,
  .header span,
  .header a {
    margin-top: 8px;
    margin-bottom: 16px;
    font-size: 16px;
    line-height: 32px;
  }
}

/* control panel */

.topbar {
  display: flex;
  justify-content: flex-start;
  align-items: start;
  margin: 5px;
  width: 100%;
}

@media (hover: none) and (max-width: 480px) {
  .topbar {
    justify-content: space-between;
    flex-wrap: wrap;
  }
}

.topbar > div {
  margin-right: 5px;
  flex-grow: 0;
}

.topbar > div:last-child {
  margin-right: 0;
  flex-grow: 0;
  text-align: right;
}

.topbar > div.divider {
  flex-grow: 1;
  margin-right: 0;
}

.topbar label {
  vertical-align: middle;
  user-select: none;
}

@media (hover: none) and (max-width: 480px) {
  .topbar > div {
    margin-bottom: 3px;
    flex-grow: 0;
  }

  .topbar > div.divider {
    flex-grow: 0;
  }
}

/* controls */

input {
  line-height: 20px;
  vertical-align: middle;
}

input[type='checkbox'] {
  margin-left: 0;
}

input.range {
  width: 50px;
}

input.rangeedit {
  width: 2em;
}

input.invalid {
  color: white;
  background-color: crimson;
}

@media (hover: none) and (max-width: 480px) {
  input {
    line-height: 32px;
  }

  input[type='checkbox'],
  input[type='range'] {
    zoom: 2;
  }
}

select {
  vertical-align: middle;
}

label::after {
  content: '\00a0';
}

/* canvas area */

.main {
  position: relative;
  border: 1px solid black;
  margin: 0;
  padding: 0;
}

canvas {
  display: inherit;
  margin: 0;
  padding: 0;
  touch-action: manipulation;
}

.videocounter {
  position: absolute;
  display: flex;
  justify-content: center;
  align-items: center;
  top: 0;
  left: 0;
  color: white;
  text-shadow: -1px -1px 0 black, 1px -1px 0 black, -1px 1px 0 black,
    1px 1px 0 black;
  opacity: 75%;
  pointer-events: none;
  user-select: none;
}

@media (hover: none) and (max-width: 480px) {
  .main {
    width: 100%;
    height: auto;
  }

  canvas {
    width: 100% !important;
    height: auto !important;
  }

  .videocounter {
    width: 100% !important;
    height: auto !important;
  }
}

/* info panel */

.bottombar {
  display: flex;
  justify-content: flex-start;
  align-items: start;
  margin: 5px;
  width: 100%;
}

@media (hover: none) and (max-width: 480px) {
  .bottombar {
    flex-wrap: wrap;
  }
}

.bottombar > div,
.bottombar > input {
  margin-right: 5px;
}

.bottombar > div:last-child {
  margin-right: 0;
  flex-grow: 1;
  text-align: right;
}

@media (hover: none) and (max-width: 480px) {
  .bottombar > div,
  .bottombar > input {
    margin-bottom: 5px;
    flex-grow: 0;
  }

  .bottombar > div:last-child {
    text-align: center;
  }
}

.refstatus {
  font-family: 'Courier New', Courier, monospace;
}

/* footer */

.footer {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: start;
}

.footer div,
.footer span,
.footer a {
  font-weight: 300;
  line-height: 20px;
}

@media (hover: none) and (max-width: 480px) {
  .footer {
    align-items: start;
  }

  .footer div,
  .footer span,
  .footer a {
    line-height: 26px;
    margin-bottom: 5px;
  }

  .footer div {
    width: 100%;
  }
}

/* help text */

.normalonly {
  display: block;
}

.mobileonly {
  display: none;
}

@media (hover: none) {
  .normalonly {
    display: none;
  }

  .mobileonly {
    display: block;
  }
}

/* copyright */

footer {
  position: fixed;
  bottom: 0;
  width: 100%;
  z-index: 1;
  pointer-events: none;
}

.footer-style {
  padding: 10px;
  text-align: right;
  filter: drop-shadow(0 0 4px white) drop-shadow(0 0 4px white)
    drop-shadow(0 0 4px white) drop-shadow(0 0 4px white);
  font-weight: 300;
}

.footer-style a {
  font-weight: 300;
  pointer-events: fill;
}

/* errors */

#error {
  position: fixed;
  top: 10px;
  left: 10px;
  max-height: 40vh;
  overflow: auto;
  color: crimson;
  background-color: white;
  margin: 5px;
  padding: 5px;
  border: 1px solid black;
  border-radius: 7.5px;
}

#error:empty {
  display: none;
}