/* //////////////////////////////////////////////////////////////////////////

   Loop
   |
   ├─ General
   └─ Animations

   ////////////////////////////////////////////////////////////////////////// */

:root {

   /* Global settings
   –––––––––––––––––––––––––––––––––––––––––––––––––––– */ 
   --color-steps: #ebebeb;

}

/* Automatic dark version
   –––––––––––––––––––––––––––––––––––––––––––––––––––– */
@media (prefers-color-scheme:dark) {
   .auto-dark-mode {
      --color-steps: #3d3e52;
   }

}

/* //////////////////////////////////////////////////////////////////////////

   Loop

   ////////////////////////////////////////////////////////////////////////// */

/* ––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––
   General
   –––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––– */
.loop {
   margin-top: 0;
   margin-bottom: 3vw;
   background-color: var(--color-five);
   gap: 0;
   --v-loop-font-min: var(--font-xs-small);
}

.loop-item {
   position: relative;
   --v-loop-font-scale: .4;
   --v-loop-bg-opacity: 0;
}

/* Scale */
.loop-item:has(+ .loop-item + .loop-item + .loop-item + [data-loop="active"]),
[data-loop="active"] + .loop-item + .loop-item + .loop-item + .loop-item {
   --v-loop-bg-opacity: .18;
}

.loop-item:has(+ .loop-item + .loop-item + [data-loop="active"]),
[data-loop="active"] + .loop-item + .loop-item + .loop-item {
   --v-loop-font-scale: .45;
   --v-loop-bg-opacity: .32;
}

.loop-item:has(+ .loop-item + [data-loop="active"]),
[data-loop="active"] + .loop-item + .loop-item {
   --v-loop-font-scale: .55;
   --v-loop-bg-opacity: .56;
}

.loop-item:has(+ [data-loop="active"]),
[data-loop="active"] + .loop-item {
   --v-loop-font-scale: .65;
   --v-loop-bg-opacity: .88;
}

/* Summary */
.loop details summary {
   font-size: max(var(--v-loop-font-min), calc(var(--font-medium) * var(--v-loop-font-scale)));
   list-style: none;
   cursor: pointer;
}

.loop details summary::-webkit-details-marker {
   display: none;
}

.loop details summary span.theme {
   font-family: var(--font-family-monospace);
   font-weight: var(--font-weight-monospace-regular);
   display: inline-flex;
   align-items: center;
}

.loop details summary sup {
   line-height: 1;
   display: inline-flex;
   align-items: center;
}

.loop [data-loop="done"] summary {
   display: grid;
   grid-template-columns: 1fr auto;
}

.loop [data-loop]:not([data-loop="done"]) summary::after {
   display: none;
}

/* Icons */
[data-loop] summary .theme::before {
   font-family: var(--font-family-one);
   font-weight: var(--font-weight-one-light);
   margin-right: .4em;
}

[data-loop="active"] summary .theme::before {
   margin-right: .2em;
}

[data-loop="done"] summary .theme::before {
   font-size: .8em;
   content: '✓';
}

[data-loop="next"] summary .theme::before {
   font-size: .7em;
   content: '→';
}

[data-loop="planned"] summary .theme::before {
   font-size: .8em;
   content: '○';
}

[data-loop="legacy"] summary .theme::before {
   font-size: .8em;
   content: '◇';
}

/* Body */
.loop-body ul {
   margin-top: 0;
   margin-bottom: 2vw;
}

[data-loop="done"] .loop-body {
   padding: max(20px, 1vw) max(10px, 2vw);
   grid-template-columns: auto auto;
}

[data-loop="done"] .loop-body a {
   align-self: start;
   border: none;
   justify-self: end;
}

/* States
   –––––––––––––––––––––––––––––––––––––––––––––––––––– */
.loop-head {
   display: inline-flex;
   align-items: center;
   min-width: 0;
}

[data-loop="active"] {
   padding: max(40px, 2vw) max(20px, 2vw);
   --v-loop-font-scale: 1.2;
}

[data-loop="active"] summary {
   align-items: center;
   grid-template-columns: minmax(0, 1fr) clamp(180px, 30vw, 460px);
}

[data-loop="active"] summary span.theme.active {
   font-family: var(--font-family-one);
   font-weight: var(--font-weight-one-light);
   color: var(--color-font-black);
}

[data-loop="active"] summary span.theme::before {
   content: none;
}

[data-loop="active"] summary sup,
[data-loop="next"] summary sup {
   color: var(--color-font-one);
   border-radius: var(--radius);
   background-color: var(--color-body);
}

[data-loop="active"] summary sup {
   padding: .3em .5em;
   transform: translateY(-1.1em);
}

[data-loop="next"] summary sup {
   padding: .2em .4em;
   transform: translateY(-.3em);
}

[data-loop='active'] img {
   align-self: center;
   width: auto;
   height: clamp(100px, 16.875vw, 300px);
   border-radius: var(--radius);
   box-shadow: 0 20px 35px -8px rgba(0, 0, 0, .4);
   grid-column: 2;
   grid-row: 1;
   justify-self: center;
}

/* Next, planned, done and legacy */
[data-loop="done"] {
   border-top: var(--border-thin);
}

[data-loop="next"],
[data-loop="planned"],
[data-loop="legacy"] {
   border-bottom: var(--border-thin);
}

[data-loop="done"] summary,
[data-loop="next"] summary,
[data-loop="planned"] summary,
[data-loop="legacy"] summary {
   padding: max(20px, 1vw) max(10px, 1vw) max(20px, 1vw) max(10px, 2vw);
}

[data-loop="done"]::before,
[data-loop="next"]::before,
[data-loop="planned"]::before {
   position: absolute;
   z-index: 0;
   content: '';
   opacity: var(--v-loop-bg-opacity);
   background-color: var(--color-steps);
   inset: 0;
}

[data-loop="done"] > *,
[data-loop="next"] > *,
[data-loop="planned"] > * {
   position: relative;
   z-index: 1;
}

.loop > details:not([data-loop="legacy"]):first-of-type,.loop > details:last-of-type {
   border: none;
}

/* Loader */
.loop-loader {
   display: inline-grid;
   width: .8em;
   height: .8em;
   margin-right: .18em;
   grid-template-columns: repeat(2, 1fr);
   grid-template-rows: repeat(2, 1fr);
   place-items: center;
}

.loop-loader span {
   display: block;
   animation: active-flow 3s ease-in-out infinite;
   opacity: .35;
   border-radius: var(--radius-full);
   background-color: var(--color-font-black);
   aspect-ratio: 1;
   block-size: clamp(8px, 1vw, 12px);
   inline-size: clamp(8px, 1vw, 12px);
}

.loop-loader span:nth-child(2) { animation-delay: .45s; }
.loop-loader span:nth-child(3) { animation-delay: 1s; }
.loop-loader span:nth-child(4) { animation-delay: 1.35s; }

/* RWD — General
   –––––––––––––––––––––––––––––––––––––––––––––––––––– */
@media (max-width:768px) {
   [data-loop="active"] summary {
      grid-template-columns: 1fr;
   }

   [data-loop="active"] summary sup {
      transform: translateY(-.5em);
   }

   [data-loop="active"] img,
   [data-loop="done"] .loop-body a {
      display: none;
   }

}

/* ––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––
   Animations
   –––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––––– */
@keyframes active-flow {
   0%, 100% { opacity: .35; }
   35% { opacity: 1; }
   70% { opacity: .55; }
}