src/css/main.css

html {
  height: 100%;  /* Required for printing. */
}

body {
  background: black;
  bottom: 0;
  height: 100%;
  left: 0;
  margin: 0;
  overflow: hidden;
  position: absolute;
  top: 0;
  width: 100%;
}

.scrollbar-track {
  padding: 2px;
  position: fixed;
}

.scrollbar-track-horizontal {
  bottom: 0;
  left: 0;
  right: 0;
}

.scrollbar-track-vertical {
  bottom: 0;
  right: 0;
  top: 0;
}

.scrollbar-thumb {
  background: white;
  border: 1px solid #555;
  border-radius: 3px;
  box-sizing: border-box;
  opacity: 0.4;
  position: absolute;
  transition: opacity 100ms;
}

.scrollbar-track .scrollbar-thumb:hover {
  opacity: 0.6;
}

.scrollbar-track .scrollbar-thumb:active {
  opacity: 0.8;
}

.scrollbar-track-horizontal,
.scrollbar-track-horizontal .scrollbar-thumb {
  height: 8px;
}

.scrollbar-track-vertical,
.scrollbar-track-vertical .scrollbar-thumb {
  width: 8px;
}

.buttons {
  align-items: center;
  display: flex;
  justify-content: center;
  pointer-events: none;
}

.buttons button,
.buttons input {
  pointer-events: auto;
  -webkit-app-region: no-drag;
  background-color: transparent;
  background-position: center;
  background-repeat: no-repeat;
  border: none;
  border-radius: 4px;
  width: 40px;
  height: 40px;
  margin: 0;
  padding: 0;
  outline: none;
  position: relative;
}

.buttons button:focus:after,
.buttons input:focus:after {
  position: absolute;
  border: 2px solid rgba(26, 115, 232, 0.5);
  border-radius: 4px;
  top: -3px;
  left: -3px;
  bottom: -3px;
  right: -3px;
  content: '';
}

.buttons.circle button:focus:after {
  border-radius: 50%;
}

*:focus {
  /* Make all elements have the same focus-outline style. */
  outline: 2px solid rgba(26, 115, 232, 0.5);
}

.buttons input {
  -webkit-appearance: none;
}

.buttons.circle button {
  border-radius: 50%;
}

.buttons button[disabled],
.buttons input[disabled] {
  opacity: 0.65;
  pointer-events: none;
}

.buttons.circle button[disabled] {
  opacity: 0.75;
}

.buttons button:active,
.buttons input:active {
  -webkit-transform: scale(1.07);
}

#browser-print {
  background-image: url(../images/browser_button_print.svg);
}

#browser-export {
  background-image: url(../images/browser_button_export.svg);
}

#browser-back {
  background-image: url(../images/browser_button_back.svg);
}

#browser-delete {
  background-image: url(../images/browser_button_delete.svg);
}

#error {
  align-items: center;
  background: black;
  bottom: 0;
  color: white;
  display: none;
  flex-direction: column;
  font-size: 18px;
  justify-content: center;
  left: 0;
  position: absolute;
  right: 0;
  top: 0;
  z-index: 1;
}

#error #error-msg,
#error #error-msg-hint {
  text-align: center;
  padding: 2px 0;
}

#error #error-msg-hint {
  font-size: 16px;
}

body.has-error #error {
  display: flex;
}

::-webkit-scrollbar {
  width: 0;
  height: 0;
}

::-webkit-scrollbar-track {
  background: transparent;
}

::-webkit-scrollbar-thumb {
  background: transparent;
  width: 0;
  height: 0;
}

.top-stripe {
  position: absolute;
  top: 48px;
  -webkit-transform: translateY(-50%);
}

body.shift-top-stripe .top-stripe {
  top: 0;  /* Calculate at runtime. */
}

.bottom-stripe,
body:not(.tablet-landscape) .actions-group {
  position: absolute;
  bottom: 56px;
  -webkit-transform: translateY(50%);
}

body.tablet-landscape .bottom-stripe {
  bottom: 48px;
}

body.shift-bottom-stripe .bottom-stripe,
body.shift-bottom-stripe:not(.tablet-landscape) .actions-group {
  bottom: 0;  /* Calculate at runtime. */
}

.left-stripe {
  position: absolute;
  left: 48px;
  -webkit-transform: translateX(-50%);
}

body.shift-left-stripe .left-stripe {
  left: 0;  /* Calculate at runtime. */
}

.right-stripe,
body.tablet-landscape .actions-group {
  position: absolute;
  right: 56px;
  -webkit-transform: translateX(50%);
}

body:not(.tablet-landscape) .right-stripe {
  right: 48px;
}

body.shift-right-stripe .right-stripe,
body.shift-right-stripe.tablet-landscape .actions-group {
  right: 0;  /* Calculate at runtime. */
}

.top-stripe.right-stripe {
  -webkit-transform: translate(50%, -50%);
}

.bottom-stripe.right-stripe {
  -webkit-transform: translate(50%, 50%);
}

.bottom-stripe.left-stripe {
  -webkit-transform: translate(-50%, 50%);
}

.actions-group button {
  margin: 0 8px;
}

body.tablet-landscape .actions-group {
  flex-direction: column-reverse;
}

body.tablet-landscape .actions-group button {
  margin: 8px 0;
}

#shutter {
  background-image: url(../images/camera_shutter_photo_start.svg);
  width: 72px;
  height: 72px;
  z-index: 1;  /* On top of transforming switch-mode buttons. */
}

#shutter:hover {
  background-image: url(../images/camera_shutter_photo_start_hover.svg);
}

#shutter:active {
  background-image: url(../images/camera_shutter_photo_start_active.svg);
}

body.taking.timer #shutter {
  background-image: url(../images/camera_shutter_photo_stop.svg);
}

body.taking.timer #shutter:hover {
  background-image: url(../images/camera_shutter_photo_stop_hover.svg);
}

body.record-mode #shutter {
  background-image: url(../images/camera_shutter_recording_start.svg);
}

body.record-mode #shutter:hover {
  background-image: url(../images/camera_shutter_recording_start_hover.svg);
}

body.record-mode.taking #shutter {
  background-image: url(../images/camera_shutter_recording_stop.svg);
}

body.record-mode.taking #shutter:hover {
  background-image: url(../images/camera_shutter_recording_stop_hover.svg);
}

#switch-recordvideo,
#switch-takephoto {
  width: 56px;
  height: 56px;
}

#switch-recordvideo {
  background-image: url(../images/camera_button_switch_video.svg);
  transition: transform 50ms;
}

#switch-takephoto {
  background-image: url(../images/camera_button_switch_photo.svg);
  transition: transform 50ms;
}

body.record-mode #switch-recordvideo {
  -webkit-transform: translateX(-160px);
}

body.tablet-landscape.record-mode #switch-recordvideo {
  -webkit-transform: translateY(160px);
}

body:not(.record-mode) #switch-takephoto {
  -webkit-transform: translateX(160px);
}

body.tablet-landscape:not(.record-mode) #switch-takephoto {
  -webkit-transform: translateY(-160px);
}

body.record-mode #switch-recordvideo,
body:not(.record-mode) #switch-takephoto,
body:not(.record-mode) #toggle-mic {
  visibility: hidden;
}

#camera-mode {
  background-image: url(../images/camera_mode_photo.svg);
  width:  40px;
  height: 40px;
  visibility: hidden;
}

body.record-mode #camera-mode {
  background-image: url(../images/camera_mode_recording.svg);
}

body.mode-switching:not(.capturing) #camera-mode {
  visibility: visible;
}

#timer-tick-msg {
  color: white;
  font-size: 72px;
  font-family: 'Roboto', sans-serif;
  visibility: hidden;
}

#timer-tick-msg.animate {
  transform: scale(1.8, 1.8);
  opacity: 0.2;
  transition: transform 500ms ease-out, opacity 500ms ease-out;
  visibility: visible;
}

#switch-device {
  background-image: url(../images/camera_button_switch_device.svg);
  width: 48px;
  height: 48px;
}

#switch-device.animate {
  animation: switch-device-rotate 350ms ease-out;
}

@keyframes switch-device-rotate {
  0% {
    transform: rotate(0deg);
  }
  100% {
    transform: rotate(-180deg);
  }
}

#gallery-enter {
  position: relative;
  width: 48px;
  height: 48px;
  background-size: cover;
  background-color: rgba(24, 24, 24, 1);
}

.centered-overlay {
  position: absolute;
  left: 50%;
  top: 50%;
  -webkit-transform: translate(-50%, -50%);
}

.options-group {
  flex-direction: column;
}

.options-group input {
  margin: 18px 0;
}

#toggle-timer {
  background-image: url(../images/camera_button_timer_on.svg);
}

#toggle-timer:not(:checked) {
  background-image: url(../images/camera_button_timer_off.svg);
}

#toggle-grid {
  background-image: url(../images/camera_button_grid_on.svg);
}

#toggle-grid:not(:checked) {
  background-image: url(../images/camera_button_grid_off.svg);
}

#toggle-mirror {
  background-image: url(../images/camera_button_mirror_on.svg);
}

#toggle-mirror:not(:checked) {
  background-image: url(../images/camera_button_mirror_off.svg);
}

#toggle-mic {
  background-image: url(../images/camera_button_mic_on.svg);
}

#toggle-mic:not(:checked) {
  background-image: url(../images/camera_button_mic_off.svg);
}

#camera,
#browser {
  bottom: 0;
  left: 0;
  opacity: 0;
  overflow: auto;
  position: absolute;
  right: 0;
  top: 0;
  visibility: hidden;
}

body.camera #camera,
body.browser #browser {
  opacity: 1;
  transition: opacity 100ms;
  visibility: visible;
}

#camera,
#preview-wrapper {
  align-items: center;
  display: flex;
  justify-content: center;
  overflow: hidden;
}

body.shift-preview-top #preview-wrapper {
  position: absolute;
  top: 0;
}

body.shift-preview-left #preview-wrapper {
  position: absolute;
  left: 0;
}

#preview-wrapper,
#preview-video {
  flex-shrink: 0;
  pointer-events: none;
  position: relative;
}

body.capturing #preview-video {
  pointer-events: auto;
}

body.mirror #preview-video,
body.mirror #preview-focus {
  -webkit-transform: scaleX(-1);
}

#preview-focus {
  position: absolute;
  left: 0;
  top: 0;
  right: 0;
  bottom: 0;
  visibility: hidden;
}

#preview-focus-aim {
  position: absolute;
  transform: translate(-50%, -50%);
}

body:not(.capturing) #preview-video {
  filter: blur(10px);
  /* Scale up to hide blurred edges. */
  -webkit-transform: scale(1.03, 1.03);
}

body.mirror:not(.capturing) #preview-video {
  -webkit-transform: scale(-1.03, 1.03);
}

#preview-grid {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  top: 0;
  opacity: 0.5;
  visibility: hidden;
}

body.capturing.grid #preview-grid,
body.capturing #preview-focus {
  visibility: visible;
}

#preview-grid-horizontal {
  border-bottom: 1px solid white;
  border-top: 1px solid white;
  position: absolute;
  left: 0;
  right: 0;
  top: 50%;
  height: 100%;
  -webkit-transform: translateY(-50%);
}

body.capturing.grid #preview-grid-horizontal {
  border-bottom-width: 3px;
  border-top-width: 3px;
  -webkit-transform: translateY(-50%) scaleY(0.33333);
}

#preview-grid-vertical {
  border-left: 1px solid white;
  border-right: 1px solid white;
  position: absolute;
  bottom: 0;
  top: 0;
  left: 50%;
  width: 100%;
  -webkit-transform: translateX(-50%);
}

body.capturing.grid #preview-grid-vertical {
  border-left-width: 3px;
  border-right-width: 3px;
  -webkit-transform: translateX(-50%) scaleX(0.33333);
}

#preview-grid-horizontal.animate,
#preview-grid-vertical.animate {
  transition: transform 500ms;
}

#toast {
  align-items: center;
  bottom: 0;
  display: flex;
  justify-content: center;
  left: 0;
  opacity: 0;
  pointer-events: none;
  position: absolute;
  right: 0;
  top: 0;
  transition: opacity 250ms;
  z-index: 1;
}

#toast #toast-message {
  background: #1e1e23;
  border-radius: 16px;
  color: white;
  font-size: 16px;
  line-height: 32px;
  opacity: 0.9;
  padding: 0 16px;
}

#toast.visible {
  opacity: 1;
}

#record-time {
  align-items: center;
  display: flex;
  justify-content: flex-start;
  pointer-events: none;
  background-color: rgba(0, 0, 0, 0.2);
  border-radius: 4px;
  height: 32px;
  padding: 0 12px;
  visibility: hidden;
}

#record-time.visible {
  visibility: visible;
}

#record-time .icon {
  flex-shrink: 0;
  background-color: #ea4335;
  width: 6px;
  height: 6px;
  border-radius: 50%;
}

#record-time #record-time-msg {
  flex-shrink: 0;
  color: white;
  font-size: 13px;
  font-family: 'Roboto', sans-serif;
  margin-left: 8px;
}

#browser .buttons {
  position: fixed;
  top: 10px;
  left: 10px;
}

#browser .buttons button {
  margin: 0 8px;
}

#browser .buttons button[disabled] {
  display: none;
}

#browser {
  background: black;
}

#browser .padder {
  align-items: center;
  display: flex;
  height: 100%;
}

#browser div.media-wrapper {
  align-items: center;
  justify-content: center;
  display: flex;
  flex-shrink: 0;
  margin: 4%;
  pointer-events: auto;
}

#browser div.bounds-padder {
  display: flex;
  flex-shrink: 0;
  height: 1px;  /* Required to make the element visible. */
  width: 50%;
}

#browser div.media-wrapper.selected {
  /* TODO(yuli): Maybe add borders for selection */
}

/* Printing in the browser view. */
@media print {
  html {
    height: 100%;  /* Required for printing. */
  }

  body {
    height: auto;
    overflow: visible;
    position: static;
    width: 100%;
  }

  /* Reset background colors. */
  body,
  #browser {
    background: transparent;
  }

  /* Hide the buttons and scroll bars. */
  .buttons,
  .scrollbar-track {
    display: none;
  }

  /* Hide all root elements, except the printed view. */
  body.browser > :not(#browser) {
    display: none;
  }

  /* Hide everything from the browser view, but the selected one(s). */
  #browser .padder > :not(.selected) {
    display: none;
  }

  #browser .padder {
    align-items: flex-start;
  }

  /* Reset styles to default on the borwser view, and set the maximum dimensions
     to 100%. */
  #browser div.media-wrapper.selected {
    display: block; /* Allows to keep aspect ratio of children. */
    border: none;
    box-shadow: none;
    margin: auto;
    position: absolute;
  }

  #browser div.media-wrapper.selected img,
  #browser div.media-wrapper.selected video {
    height: auto;
    max-height: 100%;
    max-width: 100%;
    width: auto;
  }

  #browser video::-webkit-media-controls {
    display: none;
  }
}

#tooltip {
  background: rgba(241, 243, 244, 0.8);
  border-radius: 2px;
  color: #202124;
  font-size: 12px;
  font-family: 'Roboto', sans-serif;
  line-height: 22px;
  white-space: nowrap;
  padding: 0 8px;
  left: 0;
  opacity: 0;
  pointer-events: none;
  position: absolute;
  top: 0;
  z-index: 100;
}

#tooltip.visible {
  transition: opacity 350ms;
  opacity: 1;
}

#dialog {
  align-items: center;
  background: rgba(0, 0, 0, 0.8);
  bottom: 0;
  display: flex;
  justify-content: center;
  left: 0;
  position: absolute;
  right: 0;
  top: 0;
  opacity: 0;
  visibility: hidden;
  z-index: 1;
}

body.dialog #dialog {
  opacity: 1;
  transition: opacity 200ms;
  visibility: visible;
}

#dialog #dialog-popup {
  -webkit-transform: translateY(20px);
  background: white;
  display: flex;
  flex-direction: column;
  padding: 20px;
  border-radius: 4px;
  transition: -webkit-transform 200ms;
}

body.dialog #dialog #dialog-popup {
  -webkit-transform: translateY(0);
}

#dialog #dialog-msg {
  -webkit-user-select: text;  /* Allow copying the message. */
  cursor: text;
  font-size: 110%;
  max-height: 320px;
  max-width: 472px;
  overflow: auto;
  padding: 20px 0;
  white-space: pre-wrap;
}

#dialog #dialog-msg::-webkit-scrollbar {
  width: 6px;
  height: 6px;
}

#dialog #dialog-msg::-webkit-scrollbar-track {
  background: transparent;
}

#dialog #dialog-msg::-webkit-scrollbar-thumb {
  background: gray;
  width: 6px;
  height: 6px;
}

#dialog #dialog-buttons {
  align-items: center;
  display: flex;
  justify-content: flex-end;
  margin: 0 -2px;
}

#dialog #dialog-buttons button {
  padding: 6px 18px;
  margin: 4px;
}

#spinner {
  background-image: url(../images/spinner.svg);
  width:  32px;
  height: 32px;
  z-index: 1;
  visibility: hidden;
}

body:not(.mode-switching):not(.capturing) #spinner {
  visibility: visible;
}