/* HOME SIDE BAR CSS */

/* Disable placeholder CRAN link on homepage sidebar */
.template-home aside a[href="#"],
.template-home #pkgdown-sidebar a[href="#"] {
  color: #6c757d !important;
  pointer-events: none;
  text-decoration: none;
  cursor: default;
  opacity: 0.65;
}

/* README PLOT CSS */

.acre-hero {
  float: right;
  width: 322px;
  aspect-ratio: 1 / 1.14;
  margin-left: 2rem;
  margin-bottom: 0rem;
  overflow: hidden;
  position: relative;
  cursor: pointer;

  margin-top: -95px;

  border: 1px;
  border-color: grey;
  border-radius: 0;
  background: transparent;
  box-shadow: none;
}

.acre-hero img {
  position: absolute;
  top: 0;
  left: 0;
  max-width: none;
  height: auto;
  /* no transition: jump directly to the next plot */
  /* transition: transform 0.75s ease-in-out; */
  user-select: none;
  pointer-events: none;
}

.acre-hero-label {
  position: absolute;
  right: 0.3rem;
  bottom: 0rem;
  padding: 0.2rem 0.45rem;
  border-radius: 999px;
  font-size: 0.7rem;
  line-height: 1;
  color: lightgrey;
  background: white;
  opacity: 0.8;
}

.acre-hero:hover .acre-hero-label {
  opacity: 1;
}

@media (max-width: 768px) {
  .acre-hero {
    float: none;
    width: 100%;
    max-width: 280px;
    margin-left: 0;
    margin-bottom: 1.5rem;
  }
}

/* NAVVBAR CSS */

.navbar {
  background-color: #046A38 !important;
}

.navbar .navbar-brand,
.navbar .navbar-brand:hover,
.navbar .navbar-brand:focus,
.navbar .navbar-nav .nav-link,
.navbar .navbar-nav .nav-link.active,
.navbar .navbar-nav .nav-link:hover,
.navbar .navbar-nav .nav-link:focus,
.navbar .navbar-nav .show > .nav-link {
  color: white !important;
}

/* Version text, e.g. <small class="nav-text text-muted ...">0.1.0</small> */
.navbar .nav-text,
.navbar .text-muted,
.navbar small,
.navbar small.nav-text,
.navbar small.text-muted {
  color: rgba(255, 255, 255, 0.85) !important;
}

/* GitHub icon / right-side icons */
.navbar .navbar-nav .nav-link svg,
.navbar .navbar-nav .nav-link i {
  color: white !important;
}

/* Dropdown */
.navbar .dropdown-menu {
  background-color: white;
  border: 1px solid rgba(0, 0, 0, 0.1);
}

.navbar .dropdown-item {
  color: #212529 !important;
}

.navbar .dropdown-item:hover,
.navbar .dropdown-item:focus {
  color: #046A38 !important;
  background-color: rgba(4, 106, 56, 0.08);
}

/* Mobile hamburger */
.navbar-toggler {
  border-color: rgba(255, 255, 255, 0.5);
}

.navbar-toggler-icon {
  filter: invert(1);
}

/* Site-wide links */
a {
  color: #046A38;
}

a:hover,
a:focus {
  color: #034f2a;
}

/* BIRDS CSS */

.acre-birds {
  position: fixed;
  right: 2rem;
  bottom: 0;
  width: 420px;
  height: 120px;
  z-index: 9000;
  pointer-events: none;
}

.acre-bird-perch {
  position: absolute;
  bottom: -2px;

  width: 88px;
  height: 125px;

  pointer-events: auto;
  cursor: pointer;
  will-change: transform;
}

/* Same bottom line, irregular horizontal spacing */
.acre-bird-perch[data-bird-index="0"] {
  right: 200px;
}

.acre-bird-perch[data-bird-index="1"] {
  right: 156px;
}

.acre-bird-perch[data-bird-index="2"] {
  right: 126px;
}

.acre-bird-perch[data-bird-index="3"] {
  right: 49px;
}

.acre-bird-perch[data-bird-index="4"] {
  right: 24px;
}

.acre-bird-sprite {
  width: 88px;
  height: 125px;

  background-image: url("reference/figures/birds_perch.svg");
  background-size: contain;
  background-position: center bottom;
  background-repeat: no-repeat;

  transform-origin: center bottom;
  will-change: background-position, transform;
  filter: hue-rotate(85deg) saturate(0.95) brightness(0.75);
}

/* Perched direction: same visual size as flying */
.acre-bird-perch.face-right:not(.is-flying) .acre-bird-sprite {
  transform: scaleX(1) scale(0.28);
}

.acre-bird-perch.face-left:not(.is-flying) .acre-bird-sprite {
  transform: scaleX(-1) scale(0.28);
}

/* Flying sprite sheet */
.acre-bird-perch.is-flying .acre-bird-sprite {
  background-image: url("https://s3-us-west-2.amazonaws.com/s.cdpn.io/174479/bird-cells-new.svg");
  background-size: auto 100%;
  background-position: 0 0;
  background-repeat: no-repeat;

  animation-name: acre-bird-flap;
  animation-timing-function: steps(10);
  animation-iteration-count: infinite;
  animation-duration: 0.72s;
}

/* Flying direction: same visual size as perched */
.acre-bird-perch.is-flying.face-right .acre-bird-sprite {
  transform: scaleX(1) scale(0.5);
}

.acre-bird-perch.is-flying.face-left .acre-bird-sprite {
  transform: scaleX(-1) scale(0.5);
}

/* small visual variation */
.acre-bird-perch[data-bird-index="1"] .acre-bird-sprite {
  filter: hue-rotate(105deg) saturate(0.9) brightness(0.72);
}

.acre-bird-perch[data-bird-index="2"] .acre-bird-sprite {
  filter: hue-rotate(75deg) saturate(0.84) brightness(0.78);
}

.acre-bird-perch[data-bird-index="3"] .acre-bird-sprite {
  filter: hue-rotate(95deg) saturate(0.88) brightness(0.70);
}

.acre-bird-perch[data-bird-index="4"] .acre-bird-sprite {
  filter: hue-rotate(115deg) saturate(0.86) brightness(0.73);
}

.acre-bird-perch:hover:not(.is-flying) {
  transform: translateY(-3px);
}

.acre-bird-perch.is-flying {
  pointer-events: none;
}

/* Faster flap on takeoff */
.acre-bird-perch.is-taking-off .acre-bird-sprite {
  animation-duration: 0.32s;
}

/* Faster flap on landing */
.acre-bird-perch.is-landing .acre-bird-sprite {
  animation-duration: 0.36s;
}

@keyframes acre-bird-flap {
  100% {
    background-position: -900px 0;
  }
}

@media (max-width: 768px) {
  .acre-birds {
    display: none;
  }
}

@media (prefers-reduced-motion: reduce) {
  .acre-birds {
    display: none;
  }
}