discourse/app/assets/stylesheets/common/base/discourse.scss

// Common
// global styles that apply to the Discourse application specifically
// BEWARE: changing these styles implies they take effect anywhere they are seen
// throughout the Discourse application

// Animation Keyframes
@keyframes ping {
  from {
    transform: scale(0.25);
    opacity: 1;
  }
  to {
    transform: scale(2);
    opacity: 0;
  }
}

@keyframes rotate-forever {
  0% {
    transform: rotate(0deg);
  }
  100% {
    transform: rotate(360deg);
  }
}

@keyframes background-fade-highlight {
  0% {
    background-color: var(--tertiary-low);
  }
  100% {
    background-color: transparent;
  }
}

// placeholder
@keyframes placeHolderShimmer {
  0% {
    background-position: -1000px 0;
  }
  100% {
    background-position: 1100px 0;
  }
}

.placeholder-animation {
  animation-duration: 4s;
  animation-fill-mode: forwards;
  animation-iteration-count: infinite;
  animation-name: placeHolderShimmer;
  animation-timing-function: linear;
  background: var(--primary-very-low);
  background: linear-gradient(
    to right,
    var(--primary-very-low) 10%,
    var(--primary-low) 18%,
    var(--primary-very-low) 33%
  );
}

// Base Elements
html {
  height: 100%;
}

body {
  background-attachment: fixed;
  background-size: cover;
  min-height: 100%;

  @include clearfix;
}

// setting a static limit on big and small prevents nesting abuse
big {
  font-size: $font-up-5;
}
small {
  font-size: $font-down-2;
}

blockquote {
  @include post-aside;
  clear: both;
}

h1,
h2,
h3,
h4,
h5,
h6 {
  margin-top: 0;
  margin-bottom: 0.5rem;
}

a.cancel {
  margin-left: 1.25em;
  line-height: normal;
  color: var(--primary-high);
  transition: color 250ms;
  &:hover {
    color: var(--danger);
  }
}

ul.breadcrumb {
  margin: 0 10px 0 10px;
}

a.no-href {
  cursor: pointer;
}

img.avatar {
  border-radius: 50%;
}

// don't wrap relative dates; we want Jul 26, '15, not: Jul
//                                                      26,
//                                                      '15
span.relative-date {
  white-space: nowrap;
}

label {
  display: flex;
  margin-bottom: 5px;
  align-items: flex-start;
  > .d-icon {
    align-self: center;
    margin-right: 4px;
  }
}

input {
  &[type="radio"],
  &[type="checkbox"] {
    margin-top: 0.17em;
    margin-right: 0.43em;
    margin-left: 0.1em;
    line-height: $line-height-small;
    cursor: pointer;
    flex-shrink: 0; // Adding for safety, Safari will shrink checkboxes
  }
  &[type="submit"],
  &[type="reset"],
  &[type="button"],
  &[type="radio"],
  &[type="checkbox"] {
    width: auto;
  }

  &.invalid {
    background-color: var(--danger-low);
  }

  .radio &[type="radio"],
  .checkbox &[type="checkbox"] {
    float: left;
    margin-left: -18px;
  }
}

input,
select,
textarea {
  color: var(--primary);
  caret-color: currentColor;

  &[class*="span"] {
    float: none;
    margin-left: 0;
  }

  &[disabled],
  &[readonly] {
    cursor: not-allowed;
    background-color: var(--primary-low);
    border-color: var(--primary-low);
  }

  &:focus:required:invalid {
    color: var(--danger);
    border-color: var(--danger);
  }

  &:focus:required:invalid:focus {
    border-color: var(--danger);
    box-shadow: shadow("focus-danger");
  }
}

input {
  &[type="text"],
  &[type="password"],
  &[type="datetime"],
  &[type="datetime-local"],
  &[type="date"],
  &[type="month"],
  &[type="time"],
  &[type="week"],
  &[type="number"],
  &[type="email"],
  &[type="url"],
  &[type="search"],
  &[type="tel"],
  &[type="color"] {
    @include appearance-none;
    display: inline-block;
    padding: $input-padding;
    margin-bottom: 9px;
    font-size: $font-0;
    line-height: $line-height-small;
    color: var(--primary);
    background-color: var(--secondary);
    border: 1px solid var(--primary-medium);
    border-radius: 0;
    box-sizing: border-box;
    min-height: 30px;
    &:focus {
      border-color: var(--tertiary);
      box-shadow: shadow("focus");
      outline: 0;
    }
  }
}

.input {
  &-prepend,
  &-append {
    margin-bottom: 5px;
    input[class*="span"] {
      display: inline-block;
    }
    input,
    select {
      position: relative;
      margin-bottom: 0;
      vertical-align: middle;
      border-radius: 0;
      &:focus {
        z-index: z("base") + 1;
      }
    }
    .add-on {
      display: inline-flex;
      align-items: center;
      width: auto;
      padding: 0 0.5em;
      height: 28px;
      background-color: var(--primary-low);
      border: 1px solid var(--primary-medium);
    }
    .add-on,
    .btn {
      &:first-child {
        margin-right: -1px;
      }
      &:last-child {
        margin-left: -1px;
        border-radius: 0 3px 3px 0;
      }
    }
  }

  &-prepend {
    .add-on,
    .btn {
      margin-right: -1px;
    }
  }
}

textarea {
  height: auto;
  background-color: var(--secondary);
  border: 1px solid var(--primary-medium);
  &:focus {
    border-color: var(--tertiary);
    box-shadow: shadow("focus");
    outline: 0;
  }
}

select {
  border: 1px solid var(--primary-low);
}

table {
  th {
    font-weight: normal;
    color: var(--primary-medium);
    text-align: left;
    padding: 0.5em;
  }
}

// Common Classes

.sortable {
  white-space: nowrap;
  cursor: pointer;
  .discourse-no-touch & {
    &:hover {
      background-color: var(--primary-low);
    }
  }
  .d-icon {
    margin-left: 0.25em;
  }
  @include unselectable;
}

.radio,
.checkbox {
  min-height: 18px;
  padding-left: 18px;

  .controls > &:first-child {
    padding-top: 5px;
  }

  &.inline {
    display: inline-block;
    padding-top: 5px;
    margin-bottom: 0;
    vertical-align: middle;
  }
}

.radio.inline .radio.inline,
.checkbox.inline .checkbox.inline {
  margin-left: 10px;
}

.container {
  @extend .clearfix;
}

.wrap {
  @extend .clearfix;
  margin-right: auto;
  margin-left: auto;
  padding: 0 8px;

  .contents {
    position: relative;
  }
}

.boxed {
  &.white {
    background-color: var(--secondary);
  }
}

.full-width {
  margin-left: 12px;
}

.top-space {
  margin-top: 10px;
}

.message {
  border-radius: 8px;
  background-color: var(--secondary);
  padding: 14px;

  h2 {
    margin-bottom: 20px;
  }
}

.clear-transitions {
  transition: none !important;
}

.tip {
  display: inline-block;
  &.good {
    color: var(--success);
  }
  &.bad {
    color: var(--danger);
  }
}

.avatar-wrapper {
  background-color: var(--secondary);
  display: inline-block;
  border-radius: 50%;
}

.profiler-results.profiler-left {
  top: 60px !important;
}

.flex-center-align {
  display: flex;
  align-items: center;
}

.unread-high-priority-notifications {
  color: var(--secondary);
  background: var(--success);

  &.badge-notification[href] {
    color: var(--secondary);
  }
}

.ring-backdrop-spotlight {
  position: absolute;
  width: 80px;
  height: 80px;
  top: -18px;
  right: -18px;
  background-image: radial-gradient(
    40px at 50% 50%,
    transparent 95%,
    var(--primary) 100%
  );
  opacity: 0.85;
}

.ring-backdrop {
  position: absolute;
  width: 80px;
  height: 80px;
  top: -18px !important;
  right: -18px !important;
  box-shadow: 0 0 0 9999px rgba(var(--primary-rgb), 0.85);
  z-index: z("modal", "overlay");
}

.ring-first-notification {
  position: absolute;
  color: var(--secondary);
  text-align: left;
  right: 70px;
  top: 60px;
  width: 230px;
  line-height: $line-height-medium;
}

.ring {
  $gradient-start: transparent;
  $gradient-end: #090;
  background: -webkit-radial-gradient($gradient-start, $gradient-end);
  background: -o-radial-gradient($gradient-start, $gradient-end);
  background: -moz-radial-gradient($gradient-start, $gradient-end);
  background: radial-gradient($gradient-start, $gradient-end);
  top: -11px !important;
  right: 23.5px !important;
  border-radius: 100%;
  width: 20px;
  height: 20px;
  -moz-animation-iteration-count: infinite;
  -webkit-animation-iteration-count: infinite;
  -webkit-transform-origin: center;
  -moz-animation-duration: 3s;
  -webkit-animation-duration: 3s;
  -moz-animation-name: ping;
  -webkit-animation-name: ping;
}

.fade {
  opacity: 0;
  transition: opacity 0.15s linear;

  &.in {
    opacity: 1;
  }
}

.inline-spinner {
  display: inline-block;
  margin: 0;
}

.spinner {
  margin: 20px auto 20px auto;
  position: relative;
  -webkit-animation: rotate-forever 1s infinite linear;
  animation: rotate-forever 1s infinite linear;
  height: 30px;
  width: 30px;
  border: 4px solid var(--primary-low-mid);
  border-right-color: transparent;
  border-radius: 50%;

  &.small {
    width: 10px;
    height: 10px;
    margin: 0;
    display: inline-block;
  }
}

.content-list {
  h3 {
    color: var(--primary-medium);
    font-size: $font-up-1;
    padding-left: 5px;
    margin-bottom: 10px;
  }

  ul {
    list-style: none;
    margin: 0;

    li {
      border-bottom: 1px solid var(--primary-low);

      &:first-of-type {
        border-top: 1px solid var(--primary-low);
      }

      a {
        display: block;
        padding: 10px;
        color: var(--primary);

        &:hover {
          background-color: var(--primary-low);
          color: var(--primary);
        }

        &.active {
          font-weight: bold;
          color: var(--primary);
        }
      }
    }
  }
}

.form-vertical {
  input,
  textarea,
  select,
  .input-prepend,
  .input-append {
    display: inline-block;
    margin-bottom: 0;
    flex: 0 0 auto;
  }

  .control-group {
    @include clearfix;
  }

  .control-label {
    font-weight: bold;
    font-size: $font-up-2;
    line-height: $line-height-large;
  }

  .controls {
    margin-left: 0;
  }
}

// Special elements
// Special elements
#main {
  img.avatar {
    &.header {
      width: 45px;
      height: 45px;
    }

    &.medium {
      width: 32px;
      height: 32px;
    }

    &.small {
      width: 25px;
      height: 25px;
    }

    &.tiny {
      width: 20px;
      height: 20px;
    }
  }

  .user-list {
    .user {
      padding-bottom: 5px;
    }
  }
}

#loading-message {
  position: absolute;
  font-size: $font-up-5;
  text-align: center;
  top: 120px;
  left: 500px;
  color: var(--primary);
}

#footer {
  .container {
    height: 50px;
    .contents {
      padding-top: 10px;
      a[href] {
        color: var(--secondary);
      }
    }
  }
}

.inline {
  display: inline;
}

.pref-email {
  .row {
    border-bottom: 1px solid #ddd;
    margin: 5px 0px;
    padding-bottom: 5px;

    &:last-child {
      border-bottom: 0;
    }
  }

  .email-first {
    font-size: 1.1em;
  }

  .email-second {
    color: var(--primary-medium);

    .primary {
      color: var(--success);
      font-weight: bold;
    }

    .unconfirmed {
      font-style: italic;
    }
  }

  .email-dropdown {
    float: right;

    .btn,
    .btn:hover {
      background: transparent;

      .d-icon {
        color: var(--primary-high);
      }
    }
  }

  .dropdown-menu {
    width: 120px;

    & .icon {
      margin-top: auto;
    }
  }
}

.pref-auth-tokens {
  .row {
    border-bottom: 1px solid #ddd;
    margin: 5px 0px;
    padding-bottom: 5px;

    &:last-child {
      border-bottom: 0;
    }
  }

  .auth-token-icon {
    color: var(--primary-medium);
    font-size: 2.25em;
    float: left;
    margin-right: 10px;
  }

  .auth-token-first {
    font-size: 1.1em;

    .auth-token-device {
      font-weight: bold;
    }
  }

  .auth-token-second {
    color: var(--primary-medium);

    .active {
      color: var(--success);
      font-weight: bold;
    }
  }

  .auth-token-dropdown {
    float: right;

    .btn,
    .btn:hover {
      background: transparent;

      .d-icon {
        color: var(--primary-high);
      }
    }
  }
}

.topic-statuses {
  display: inline;
  float: left;
  margin-right: 0.15em;
  .topic-status {
    margin: 0;
    display: inline-flex;
    color: var(--primary-medium);
    .d-icon {
      height: 0.76em;
      width: 0.75em;
    }
    &:not(:last-child) {
      margin-right: 0.15em;
    }
  }

  .topic-status-warning .d-icon-envelope {
    color: var(--danger);
  }
}

.broken-theme-alert {
  font-size: $base-font-size;
  font-weight: bold;
  padding: 5px 0;
  background: var(--danger-medium);
  text-align: center;
  z-index: z("max");
  color: var(--secondary);
}