/* Doomscrolling lesson. Everything scoped under .ds-*. */

.ds-src { font: 700 12px var(--sans); letter-spacing: .08em; text-transform: uppercase; color: var(--dim); }

/* two headlines */
.ds-two { width: min(100%, 340px); margin: 0 auto; display: flex; flex-direction: column; gap: 12px; padding: 6px 0; }
.ds-hl { text-align: left; padding: 14px 16px; border-radius: 14px; border: 1px solid var(--line-strong); background: var(--surface); color: var(--text); cursor: pointer;
  display: flex; flex-direction: column; gap: 6px; min-height: 44px; animation: ds-in .5s both; transition: opacity .3s, border-color .3s, box-shadow .3s; }
.ds-hl.gloom { animation-delay: .25s; }
.ds-hl b { font: 600 21px/1.25 var(--serif); }
@keyframes ds-in { from { opacity: 0; transform: translateX(-24px); } to { opacity: 1; transform: none; } }
.ds-chose .ds-hl { pointer-events: none; opacity: .45; }
.ds-chose .ds-hl.ds-mine { opacity: 1; border-color: var(--violet-bright); box-shadow: 0 0 0 2px var(--violet-bright); }

/* the editor */
.ds-edbox { width: min(100%, 340px); margin: 0 auto; display: flex; flex-direction: column; gap: 16px; }
.ds-ed { --g: 0; padding: 16px; border-radius: 16px; border: 1px solid var(--line-strong); display: flex; flex-direction: column; gap: 8px;
  background: linear-gradient(160deg, rgb(calc(30 - 12 * var(--g)), calc(38 - 22 * var(--g)), calc(62 - 30 * var(--g))), rgb(calc(22 - 10 * var(--g)), calc(28 - 18 * var(--g)), calc(46 - 26 * var(--g))));
  transition: background .5s; }
.ds-edt { margin: 0; font: 600 22px/1.45 var(--serif); color: var(--text); }
.ds-sw { font: inherit; color: var(--violet-bright); background: none; border: none; padding: 6px 2px; margin: -6px 0; min-height: 44px; cursor: pointer;
  text-decoration: underline dashed 2px; text-underline-offset: 5px; }
.ds-sw.on { color: var(--gold); text-decoration: none; animation: ds-flip .35s; cursor: default; }
@keyframes ds-flip { 0% { opacity: 0; transform: translateY(-6px); } 100% { opacity: 1; transform: none; } }

/* Boston */
.ds-bos { width: min(100%, 340px); margin: 0 auto; }
.ds-bars { display: none; flex-direction: column; gap: 8px; }
.ds-bos.shown .ds-bars { display: flex; animation: cardIn .3s both; }
.ds-bt { font: 700 13px var(--sans); color: var(--dim); text-align: center; }
.ds-br { display: grid; grid-template-columns: 116px 1fr 44px; gap: 8px; align-items: center; font: 600 13px var(--sans); color: var(--dim); }
.ds-br u { display: block; height: 14px; border-radius: 7px; background: var(--surface); overflow: hidden; }
.ds-br u i { display: block; width: 0; height: 100%; border-radius: 7px; transition: width .7s cubic-bezier(.3,1,.4,1); }
.ds-br.there i { background: var(--violet-bright); } .ds-br.tv i { background: var(--gold); }
.ds-br b { font: 700 15px var(--mono); color: var(--text); text-align: right; }

/* the loop, as a ring */
.ds-ring { position: relative; width: min(100%, 300px); aspect-ratio: 1.15; margin: 0 auto; }
.ds-meter { display: flex; flex-direction: column; gap: 6px; }
.ds-mr { display: grid; grid-template-columns: 104px 1fr 46px; gap: 8px; align-items: center; font: 600 13px var(--sans); color: var(--dim); }
.ds-mr u { display: block; height: 14px; border-radius: 7px; background: var(--surface); overflow: hidden; }
.ds-mr u i { display: block; width: 0; height: 100%; border-radius: 7px; background: var(--violet-bright); transition: width .5s cubic-bezier(.3,1,.4,1); }
.ds-mr.ds-you u i { background: var(--gold); }
.ds-mr b { font: 700 14px var(--mono); color: var(--text); text-align: right; }
.ds-mr.ds-you b { color: var(--gold); }
.ds-meter em { font: 500 12px var(--sans); font-style: normal; color: var(--faint); text-align: center; }

/* one slot */
.ds-slotbox { width: min(100%, 340px); margin: 0 auto; display: flex; flex-direction: column; gap: 8px; }
.ds-slot { display: flex; justify-content: space-between; align-items: baseline; padding: 0 4px; font: 700 13px var(--sans); color: var(--text); }
.ds-slot i { font: 600 12px var(--sans); font-style: normal; color: var(--gold); }
.ds-cand .ds-hl { animation: none; }
.ds-cand .ds-hl.ds-runs { border-color: var(--gold); box-shadow: 0 0 0 2px var(--gold); }

.ds-rsvg { position: absolute; left: 50%; top: 50%; width: 72%; transform: translate(-50%, -50%); overflow: visible; }
.ds-arc { fill: none; stroke: var(--line-strong); stroke-width: 3; }
.ds-arc.on { stroke: var(--violet-bright); }
.ds-arc.ds-q { stroke: var(--violet-bright); stroke-dasharray: 4 5; }
.ds-arc.ds-back { stroke: var(--line); stroke-dasharray: 4 5; transition: stroke .5s; }
.ds-ring.round .ds-arc.ds-back, .ds-ring.round .ds-arc.ds-q { stroke: var(--gold); stroke-dasharray: none; }
#ds-ah path { fill: var(--violet-bright); }
.ds-node { position: absolute; width: 46%; text-align: center; font: 700 13px/1.25 var(--sans); color: var(--faint); padding: 7px 8px; border-radius: 12px;
  background: var(--surface); border: 1px dashed var(--line); transform: translate(-50%, -50%); transition: color .3s, border-color .3s; }
.ds-node.on { color: var(--text); border: 1px solid var(--violet-bright); }
.ds-node.n0 { left: 50%; top: 9%; } .ds-node.n1 { left: 76%; top: 50%; } .ds-node.n2 { left: 50%; top: 91%; } .ds-node.n3 { left: 24%; top: 50%; }
.ds-note { font: 500 13px var(--sans); color: var(--dim); text-align: center; max-width: 300px; margin: 6px auto 0; }

/* three feeds */
.ds-cap { font: 700 13px var(--sans); color: var(--dim); text-align: center; margin-bottom: 8px; }
.ds-feeds { display: grid; grid-template-columns: repeat(3, 1fr); gap: 8px; width: min(100%, 340px); margin: 0 auto; }
.ds-fd { display: flex; flex-direction: column; align-items: center; gap: 6px; text-align: center; }
.ds-ph { width: 72px; height: 112px; border-radius: 14px; border: 2px solid var(--line-strong); background: var(--surface); display: flex; flex-direction: column; gap: 6px; padding: 10px 8px; box-sizing: border-box; transition: border-color .3s; }
.ds-ph i { display: block; height: 22px; border-radius: 5px; }
.ds-fd.bad .ds-ph i { background: rgba(169,155,255,.35); }
.ds-fd.kind .ds-ph i { background: rgba(63,214,154,.5); }
.ds-fd.hit .ds-ph { border-color: var(--gold); }
.ds-fd b { font: 700 13px var(--sans); color: var(--text); line-height: 1.2; }
.ds-fd em { font: 700 13px var(--sans); font-style: normal; min-height: 16px; color: var(--gold); }
.ds-fd.kind em { color: var(--dim); }

@media (max-height: 700px) {
  .ds-hl b { font-size: 19px; }
  .ds-edt { font-size: 19px; }
  .ds-ring { width: min(100%, 270px); }
  .ds-node { font-size: 12px; padding: 5px 6px; }
  .ds-ph { width: 60px; height: 90px; }
}