/*
MARK: STARTER SETUP

Features:
- Platform-agnostic
- Project-agnostic
- Framework-agnostic
- Data-agnostic
- Minimal reset
- Minimal nesting
- Minimal markup
- Semantic markup
- Zero-dependencies
- Zero div
- Zero span
- Zero id
- Zero class
- Zero data-*
- Light/dark/system mode
- Liquid typography
- Cross-browser formatting consensus
- Image behavior conformity
- Transition consistency
- JS for API/CRUD only
*/

:root {
  color-scheme: light dark;
  font-family: Oxanium, sans-serif;
  font-size: clamp(1rem, calc(1rem + 0.8cqi), 1.75rem);
  /* https://html-css-tip-of-the-week.netlify.app/tip/interpolate-size/
  https://12daysofweb.dev/2024/calc-size-and-interpolate-size/ */
  interpolate-size: allow-keywords;
  scroll-behavior: smooth;

  --surface-1: light-dark(oklch(80% 10% 250), oklch(10% 5% 250));
  --surface-2: light-dark(oklch(90% 7% 250), oklch(20% 5% 250));
  --surface-3: light-dark(oklch(100% 8% 250), oklch(30% 5% 250));
  --text-1: light-dark(oklch(10% 5% 250), oklch(90% 5% 250));
  --text-2: light-dark(oklch(20% 5% 250), oklch(80% 5% 250));

  background: radial-gradient(circle in oklab,
      var(--surface-2),
      var(--surface-1)) fixed;
  color: var(--text-1);
}

/* DOM order */
:where(app-container, header, main, article, section, aside, footer) {
  display: grid;
}

/* main {
  border: solid 1px color-mix(in srgb, currentColor 50%, transparent);
  border-radius: 0.3rem;
} */

/* MARK: LAYOUT */
app-container {
  height: 100dvh;
  grid-template-rows: auto auto auto 1fr auto auto auto;
  align-items: start;
}

header,
footer {
  grid-template-columns: repeat(auto-fit, minmax(min(6rem, 100%), 1fr));
}

app-logo,
app-legal {
  justify-self: start;
  padding-inline-start: 1rem;
  padding-block: 1rem;
  display: none;
}

app-user,
app-version {
  justify-self: end;
  padding-inline-end: 1rem;
  padding-block: 1rem;
  display: none;
}

main {
  height: 100%;
  align-content: start;
}

:where(article, section) {
  border: solid 1px color-mix(in srgb, currentColor 0%, transparent);
  height: 100%;
}

/* Only content level elements receive padding/margin */
:where(h1, p) {
  padding-inline: 1rem;
  padding-block-start: 1rem;
  display: none;
}

p:last-of-type {
  padding: 1rem;
}

app-logo:not(:empty),
app-user:not(:empty),
app-legal:not(:empty),
app-version:not(:empty),
h1:not(:empty),
p:not(:empty) {
  display: block;
}

/* MARK: TYPOGRAPHY */
/* h1 {
  font-size: 1.3rem;
}
p {
  font-size: 0.9rem;
  padding-block-start: 0;
}

a {
  text-decoration: none;
  &:hover {
    text-decoration: underline;
  }
} */


/* MARK: HEURISTICS */
/* intrinsic sticky headers */
app-container,
main,
article {
  overflow: hidden;
}

section {
  overflow: auto;
  background-color: color-mix(in oklab, canvas 10%, transparent);
}

/* aside hidden until receives content */
/* aside {
  display: none;

  &:not(:empty) {
    display: grid;
  }
} */

/* Intrinsic space trigger */
nav {
  position: relative;
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(min(5rem, 100%), min-content));
  justify-content: end;

  container-type: inline-size;
  container-name: nav;
  --min: 5rem;
  /* single source of truth */
  --count: 5;
  /* set per component instance */
  --threshold: calc(var(--min) * var(--count));

  label {
    padding-inline: 0.5rem;
    padding-block: 0.5em;
    cursor: pointer;
    user-select: none;
    opacity: 0.6;

    &:has(input:checked) {
      opacity: 1;
    }

    &:hover {
      opacity: 1;
    }

    &:first-of-type {
      padding-inline-start: 1rem;
    }

    &:nth-last-of-type(2) {
      padding-inline-end: 1rem;
    }

    &:nth-last-of-type(1) {
      display: none;
    }
  }
}

/* nav > label:has(> input[type="checkbox"][aria-hidden="true"]) {
  display: none;
} */

@container nav (max-width: 25rem) {
  nav {
    position: relative;
    z-index: 10;
  }

  nav > label {
    display: none;
    grid-column: 1 / -1;
  }

  nav > label:has(> input[type="checkbox"]) {
    display: grid;
    place-items: center;
    inline-size: 2.75rem;
    block-size: 2.75rem;
    margin-inline-start: auto;
    position: relative;
    z-index: 11;
    cursor: pointer;
  }

  /* hide checkbox */
  nav > label:last-of-type > input[type="checkbox"][aria-hidden="true"] {
    appearance: none;
    margin: 0;
    position: absolute;
    inset: 0;
    z-index: 3;
  }

  nav > label:has(> input[type="checkbox"])::before,
  nav > label:has(> input[type="checkbox"])::after {
    content: "";
    position: absolute;
    inset-block-start: 50%;
    inset-inline-start: 50%;
    inline-size: 1.5rem;
    block-size: 0.125rem;
    background: currentColor;
    border-radius: 999px;
    transform-origin: center;
    transition:
      transform 0.2s ease,
      opacity 0.2s ease;
    z-index: 2;
  }

  nav > label:has(> input[type="checkbox"])::before {
    transform: translate(-50%, calc(-50% - 0.4rem));
    box-shadow: 0 0.4rem 0 currentColor;
  }

  nav > label:has(> input[type="checkbox"])::after {
    transform: translate(-50%, calc(-50% + 0.4rem));
  }

  nav > label:last-of-type:has(> input[type="checkbox"]:checked)::before {
    transform: translate(-50%, -50%) rotate(45deg);
    box-shadow: none;
  }

  nav > label:last-of-type:has(> input[type="checkbox"]:checked)::after {
    transform: translate(-50%, -50%) rotate(-45deg);
  }

  nav::before {
    content: "";
    position: absolute;
    inset-block-start: 100%;
    inset-inline: 0;
    block-size: calc(100dvh - 100%);
    background: color-mix(in oklab, canvas 75%, transparent);
    backdrop-filter: blur(0.3rem);
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.2s ease;
    z-index: 9;
  }

  nav > label:not(:has(> input[type="checkbox"])) {
    position: absolute;
    inset-block-start: 100%;
    inset-inline: 0;
    display: grid;
    align-content: start;
    padding: 1rem;
    opacity: 0;
    pointer-events: none;
    z-index: 10;
  }

  nav:has(> label:last-of-type > input[type="checkbox"][aria-hidden="true"]:checked)::before {
    opacity: 1;
    pointer-events: auto;
  }

  nav:has(> label:last-of-type > input[type="checkbox"][aria-hidden="true"]:checked) > label:not(:last-of-type) {
    opacity: 1;
    pointer-events: auto;
  }
}



/* @container nav (max-width: 25rem) {
  label {
    grid-column: 1 / -1;
    padding-inline-start: 1rem;
    display: none;
  }

  label:has(> input[type="checkbox"][aria-hidden="true"]) {
    display: grid;
    place-items: center;
    inline-size: 2.75rem;
    cursor: pointer;
    position: relative;
  }

  label:has(> input[type="checkbox"][aria-hidden="true"]) > input {
    appearance: none;
    margin: 0;
    position: absolute;
    inset: 0;
  }

  label:has(> input[type="checkbox"][aria-hidden="true"]) {
    background:
      linear-gradient(currentColor 0 0) center / 1.5rem 0.125rem no-repeat;
  }

  label:has(> input[type="checkbox"][aria-hidden="true"])::before,
  label:has(> input[type="checkbox"][aria-hidden="true"])::after {
    content: "";
    position: absolute;
    inline-size: 1.5rem;
    block-size: 0.125rem;
    background: currentColor;
    border-radius: 999px;
    transition:
      rotate 0.2s ease,
      translate 0.2s ease,
      opacity 0.2s ease;
  }

  label:has(> input[type="checkbox"][aria-hidden="true"])::before {
    translate: 0 -0.4rem;
  }

  label:has(> input[type="checkbox"][aria-hidden="true"])::after {
    translate: 0 0.4rem;
  }

  label:has(> input[type="checkbox"][aria-hidden="true"]:checked)::before {
    translate: 0 0;
    rotate: 45deg;
  }

  label:has(> input[type="checkbox"][aria-hidden="true"]:checked)::after {
    translate: 0 0;
    rotate: -45deg;
  }

  label:has(> input[type="checkbox"][aria-hidden="true"]:checked) {
    background: none;
  }
} */

/* State machine */
[aria-hidden="true"] {
  display: none;
}

/* MARK: LOADING */
:root:has(article h1:empty)::before {
  content: "";
  position: fixed;
  inset: 0;
  width: 3rem;
  height: 3rem;
  margin: auto;
  border: 0.35rem solid color-mix(in srgb, currentColor 25%, transparent);
  border-top-color: transparent;
  border-radius: 50%;
  animation: spin 1s linear infinite;
  pointer-events: none;
  opacity: 1;
}

@keyframes spin {
  to {
    transform: rotate(360deg);
  }
}


/**
 * Scrolling shadows by @kizmarh and @leaverou
 * Only works in browsers supporting background-attachment: local; & CSS gradients
 * Degrades gracefully
 */

/* section {
	overflow: auto;
	width: 200px;
	max-height: 200px;
	margin: 50px auto;

	background: */
/* Shadow covers */
/* linear-gradient(white 30%, rgba(255,255,255,0)),
		linear-gradient(rgba(255,255,255,0), white 70%) 0 100%, */

/* Shadows */
/* radial-gradient(50% 0, farthest-side, rgba(0,0,0,.2), rgba(0,0,0,0)),
		radial-gradient(50% 100%,farthest-side, rgba(0,0,0,.2), rgba(0,0,0,0)) 0 100%;
	background: */
/* Shadow covers */
/* linear-gradient(white 30%, rgba(255,255,255,0)),
		linear-gradient(rgba(255,255,255,0), white 70%) 0 100%, */

/* Shadows */
/* radial-gradient(farthest-side at 50% 0, rgba(0,0,0,.2), rgba(0,0,0,0)),
		radial-gradient(farthest-side at 50% 100%, rgba(0,0,0,.2), rgba(0,0,0,0)) 0 100%;
	background-repeat: no-repeat; */
/* background-color: white; */
/* background-size: 100% 40px, 100% 40px, 100% 14px, 100% 14px; */

/* Opera doesn't support this in the shorthand */

/* https://modern-css.com/dropdown-menus-without-javascript-toggles/ */

/* #menu[popover] {
  position: absolute;
  margin: 0.25rem 0;
} */


/* background-attachment: local, local, scroll, scroll;
} */