body {
  background-position: right;
  background-size: 4pt 4pt;
  background-image: /* #6AF #6FF */
    linear-gradient( 0deg, transparent 25%, rgba(128,128,128,.5) 25% 50%, transparent 50% 75%, rgba(192,192,192,.5) 75%),
    linear-gradient(90deg, transparent 25%, rgba(128,128,128,.5) 25% 50%, transparent 50% 75%, rgba(192,192,192,.5) 75%);
}

header {
  background: inherit;
  padding: .25em 12em;
  text-align: center;
  box-shadow: #000 .25em .25em .25em;
  z-index: 1;
}

header > * { background: inherit; }
header:before,
header > *:before {
  content: ''; position: absolute;
  top: 0; right: 0; bottom: 0; left: 0;
  background-color: rgba(0,0,0,.75);
}

header a { color: #8CE; }

header #user_login {
  position: absolute;
  right: 0; top: 31pt; max-height: 0;
  width: 12em;
  padding: 0 .5em;
  text-align: center;
  box-shadow: inherit;
  transition: max-height linear .125s;
}

#user_login > * {
  position: relative;
  top: -2.5em;
}
#user_login > *:last-child {
  margin-bottom: -2em;
}
header #user_login:hover {
  max-height: 10em;
}
header #user_login > p {
  color: #EEE;
  font-size: .875em;
  line-height: 1.125em;
}
header #user_login > p span {
  display: block;
  font-size: initial;
  line-height: 1.375em;
}
header #user_login label {
  top: -1.5em;
  font-size: 1.25em;
  text-decoration: underline;
  padding-bottom: 1em;
  color: #EEE;
  text-align: right;
}
header #user_login > * {
  display: none;
}
header #user_login > :first-child,
header #user_login:hover > * {
  display: block;
  margin-left: auto;
  margin-right: auto;
}
header #user_login:hover > a[href$="/register/"] {
  text-align: right;
  margin-top: .75em;
}

main {
  background-color: rgba(255,255,255,.75);
  margin: 1em; padding: 1em;
  box-shadow: #000 .125em .125em 1em;
}

main nav {
  font-size: .875em;
  margin-top: -1em;
}
main nav > * {
  padding: .125em .5em;
  font-style: italic;
  text-decoration: underline;
}

body.channel main h1.name {
  text-align: center;
}
body main .description,
body main form,
body main iframe {
  display: block;
  max-width: 40em;
  margin: auto;
}

body main form input[name=name],
body main form input[name=email],
body main form textarea {
  display: block;
  width: 100%;
  margin-bottom: .5em;
}

body.channels main .channel {
  border: 1pt solid;
  border-radius: 4pt;
  padding: .5em;
  margin-bottom: .5em;
  height: 15em;
  overflow: hidden;
}

body.channels main .channel > .description {
  overflow: hidden;
  margin-right: -.5%;
}
body.channels main .channel > .description h2 {
  margin: 0;
}

.channel > .description, .video.thumb, .newvideo {
  display: inline-block;
  vertical-align: top;
  height: 14em;
  width: 99%; margin: 0 .5%;
  margin-bottom: 1em;
}

.newvideo button {
  display: block;
  margin: 3em auto;
}

.video.thumb:before, .newvideo:before {
  content: '';
  position: absolute;
  top: 0; left: 0; right:0; height: 11em;
  box-shadow: #000 .25em .25em .5em;
}

@media(min-width:  24em) { .channel > .description, .video.thumb, .newvideo { max-width: 49%; } }
@media(min-width:  44em) { .channel > .description, .video.thumb, .newvideo { max-width: 32%; } }
@media(min-width:  64em) { .channel > .description, .video.thumb, .newvideo { max-width: 24%; } }
@media(min-width:  84em) { .channel > .description, .video.thumb, .newvideo { max-width: 19%; } }
@media(min-width: 104em) { .channel > .description, .video.thumb, .newvideo { max-width: 19em; } }

.video.thumb > a {
  display: block;
  color: inherit;
  font-style: inherit;
  text-decoration: inherit;
}

.video.thumb figure {
  position: absolute; top: 0;
  height: 11em; width: 100%;
  overflow: hidden;
}
.video.thumb figure img {
  position: absolute; top: 0;
  height: 11em; min-width: 1000%;
  background-color: #888;
  max-width: unset;
  margin-left: 50%;
  transform: translate(-05%, 0);
  object-fit: cover;
}
.video.thumb:hover img {
  animation: thumbscroll 8s steps(10, end) infinite;
}
@keyframes thumbscroll {
  from { transform: translate(-05%, 0);}
  to   { transform: translate(-105%, 0);}
}

.video.thumb h3 {
  position: absolute;
  top: 10.25em; width: 100%;
  height: 3em;
  font-weight: bolder;
  text-align: center;
  word-break: break-word;
  overflow: hidden;
}

.video.thumb .duration {
  position: absolute;
  right: .375em; top: 10.625em;
  font-size: .875em;
  padding: 0 .25em;
  background-color: #333;;
  color: #EEE;
  opacity: .75;
}

.video.thumb .description {
  position: absolute;
  left:0; right:0; bottom: 3.5em;
  font-size: .875em;
  max-height: 1em;
  background-color: rgba(0,0,0,.75);
  color: #EEE;
  transition: height linear .25s;
}
.video.thumb .description:hover {
  max-height: 8em;
}

body.video.edit form > .delete {
  text-align: right;
}
body.video.edit form #delconfirm + label:after {
  content: '\0A';
  white-space: pre;
}
body.video.edit form #delconfirm + label + button {
  pointer-events: none;
  color: #AAA;
  border-color: #AAA;
  left: -.75em;
}
body.video.edit form #delconfirm:checked + label + button {
  pointer-events: auto;
  color: inherit;
  border-color: inherit;
  background-color: #FDD;
}

body.video video {
  display: block;
  margin: 0 auto;
  max-height: 80vh;
}

button, a.button {
  margin-top: .375em;
}

body.channel .authors h3 {
  display: inline-block;
}
body.channel.edit .authors h3 {
  margin-bottom: 0;
  display: block;
}
body.channel .authors span:after {
  content: ',';
}
body.channel .authors span:last-child:after {
  content: '';
}

body.channel.edit .authors input[name=author] {
  margin-left: .5em;
}
body.channel.edit .authors input[name=author] {
  z-index: 1;
}
body.channel.edit .authors input[name=author] + label {
  padding: .25em .5em .125em .25em;
  margin: 0 0 .5em 0;
  padding-left: 1.25em;
  margin-left: -1.25em;
  border: .5pt solid;
  background-color: rgba(255, 255, 255, .75);
}
body.channel.edit .authors input[name=author],
body.channel.edit .authors input[name=author] + label {
  display: none;
}
body.channel.edit .authors input[name=author]:checked,
body.channel.edit .authors input[name=author]:checked + label {
  display: inline-block;
}
body.channel.edit .authors input[id^=newauthor] + label {
  background-color: #FFF;
  border: 1pt solid;
  width: 1.5em; height: 1.5em;
  text-align: center;
}

body.channel.edit .authors input[id^=newauthor] + label + input {
  vertical-align: middle;
}
body.channel.edit .authors input[id^=newauthor],
body.channel.edit .authors input[id^=newauthor] + label,
body.channel.edit .authors input[id^=newauthor] + label + input {
  display: none;
}
body.channel.edit .authors input[id^=newauthor0] + label {
  display: inline-block;
}
body.channel.edit .authors input[id^=newauthor]:checked + label + input,
body.channel.edit .authors input[id^=newauthor]:checked + label + input + input + label {
  display: inline-block;
}
body.channel.edit .authors input[id^=newauthor]:checked + label,
body.channel.edit .authors input[id^=newauthor]:checked + label + input + input:checked + label {
  display: none;
}