@import "../../node_modules/semantic-forms/dist/semantic-forms.css";
@import "helpers";

/* global styles */

@view-transition { /* enable multi-page view transitions */
  navigation: auto;
}

body {
  font-family: sans-serif;
  color: #100;
}

img {
  border: 5px #000 dotted;
}

/* css animations */

@keyframes fade-in {
  from { opacity: 0; }
}

@keyframes fade-out {
  to { opacity: 0; }
}

@keyframes slide-from-right {
  from { transform: translateX(30px); }
}

@keyframes slide-to-left {
  to { transform: translateX(-30px); }
}

@keyframes slide-from-left {
  from { transform: translateX(-30px); }
}

@keyframes slide-to-right {
  to { transform: translateX(30px); }
}

/* declare some css variables to define css animation properties */
:root {
  --fade-out: 90ms cubic-bezier(0.4, 0, 1, 1) both fade-out;
  --fade-in: 210ms cubic-bezier(0, 0, 0.2, 1) 90ms both fade-in;
  --slide-to-left: 300ms cubic-bezier(0.4, 0, 0.2, 1) both slide-to-left;
  --slide-from-right: 300ms cubic-bezier(0.4, 0, 0.2, 1) both slide-from-right;
  --slide-to-right: 300ms cubic-bezier(0.4, 0, 0.2, 1) both slide-to-right;
  --slide-from-left: 300ms cubic-bezier(0.4, 0, 0.2, 1) both slide-from-left;
}

/* view transitions that leverage these animations */

body > main > header > h2 {
  view-transition-name: page-title-slide;
}

body > main > article {
  view-transition-name: page-content-slide;
}

html.fade body > main > header > h2 {
  view-transition-name: page-title-fade;
}

html.fade body > main > article {
  view-transition-name: page-content-fade;
}

/* fade */
::view-transition-old(page-title-fade),
::view-transition-old(page-content-fade) {
  animation: var(--fade-out);
}

::view-transition-new(page-title-fade),
::view-transition-new(page-content-fade) {
  animation: var(--fade-in);
}

/* slide left */
::view-transition-old(page-title-slide),
::view-transition-old(page-content-slide) {
  animation: var(--fade-out), var(--slide-to-left);
}

::view-transition-new(page-title-slide),
::view-transition-new(page-content-slide) {
  animation: var(--fade-in), var(--slide-from-right);
}

/* slide right when the back button is pressed */
.backButtonPressed::view-transition-old(page-title-slide),
.backButtonPressed::view-transition-old(page-content-slide) {
  animation: var(--fade-out), var(--slide-to-right);
}

.backButtonPressed::view-transition-new(page-title-slide),
.backButtonPressed::view-transition-new(page-content-slide) {
  animation: var(--fade-in), var(--slide-from-left);
}