/* R&D panel (rnd-panel.js): project accordion with video, flow and code. Uses the site tokens from style.css. */
.panel.rd-panel { width: min(1000px, 100vw); }
.rd-lede { max-width: 64ch; }
.rd-projects { display: flex; flex-direction: column; }

.rd-item { border-top: 1px solid var(--line); scroll-margin-top: 84px; }   /* clear of the top bar */
.rd-item:last-child { border-bottom: 1px solid var(--line); }
.rd-head { display: flex; gap: 16px; align-items: baseline; width: 100%; padding: 16px 0; text-align: left; }
.rd-head code { font-family: var(--mono); font-size: 12px; color: var(--rd); }
.rd-head span { flex: 1; display: flex; flex-direction: column; gap: 3px; }
.rd-head b { font-size: 18px; font-weight: 500; transition: color .2s; }
.rd-head small { font-size: 13px; color: var(--dim); line-height: 1.4; }
.rd-head:hover b, .rd-item.open .rd-head b { color: var(--rd); }
.rd-state { font: 10px var(--mono); letter-spacing: .1em; text-transform: uppercase; color: var(--rd); align-self: center; }
.rd-item.locked .rd-state { color: #ff5d6c; }
.rd-state:empty { display: none; }
.rd-chev { font-style: normal; font-family: var(--mono); color: var(--dim); transition: transform .25s; }
.rd-item.open .rd-chev { transform: rotate(45deg); color: var(--rd); }

.rd-body { padding: 0 0 28px 36px; }
.rd-body[hidden], .rd-lock[hidden], .rd-content[hidden], .rd-gate[hidden] { display: none; }
.rd-lock { margin-bottom: 18px; }
.rd-lock-title { font: 11px var(--mono); letter-spacing: .12em; text-transform: uppercase; color: #ff5d6c; margin-bottom: 12px; }
.rd-gate { margin: -14px 0 22px; color: var(--fg); font-size: 15px; line-height: 1.5; }
.rd-skip { color: var(--rd); text-decoration: underline; text-underline-offset: 3px; }
.rd-bugbtn { font: 12px var(--mono); color: var(--rd); border: 1px solid rgba(93, 255, 180, 0.4); border-radius: 999px; padding: 6px 12px; margin-bottom: 14px; }
.rd-bugbtn:hover { background: rgba(93, 255, 180, 0.08); }
.rd-media { border: 1px solid var(--line); border-radius: 8px; overflow: hidden; background: #000; }
.rd-media video { display: block; width: 100%; height: auto; max-height: 62vh; }

.rd-tools { list-style: none; display: flex; flex-wrap: wrap; gap: 6px; margin: 12px 0 0; }
.rd-tools li { font: 11px var(--mono); color: var(--rd); border: 1px solid rgba(93, 255, 180, 0.3); border-radius: 3px; padding: 2px 7px; }
.rd-how { margin-top: 16px; max-width: 70ch; }
.rd-how p { color: var(--dim); line-height: 1.6; margin-bottom: 10px; font-size: 15px; }
.rd-how b { color: var(--fg); font-weight: 500; }
.rd-body h4 { font: 11px var(--mono); letter-spacing: .12em; text-transform: uppercase; color: var(--dim); margin: 22px 0 10px; }

/* architecture: chips joined by arrows, wrapping on narrow screens */
.rd-flow { list-style: none; display: flex; flex-wrap: wrap; gap: 8px 0; align-items: stretch; }
.rd-flow li {
  display: flex; flex-direction: column; justify-content: center; gap: 2px;
  font: 12px var(--mono); color: var(--fg); padding: 7px 10px; border-radius: 5px;
  border: 1px solid rgba(93, 255, 180, 0.35); background: rgba(93, 255, 180, 0.05);
}
.rd-flow li small { color: var(--dim); font-size: 10px; }
.rd-flow li + li { margin-left: 22px; position: relative; }
.rd-flow li + li::before { content: '→'; position: absolute; left: -17px; top: 50%; transform: translateY(-50%); color: var(--rd); }

/* code */
.rd-tabs { display: flex; flex-wrap: wrap; gap: 6px; margin-bottom: 8px; }
.rd-tabs button { font: 11px var(--mono); color: var(--dim); border: 1px solid var(--line); border-radius: 999px; padding: 5px 11px; }
.rd-tabs button:hover { color: var(--fg); }
.rd-tabs button.on { color: #04060a; background: var(--rd); border-color: var(--rd); }
.rd-pre {
  position: relative; margin: 0; padding: 30px 16px 14px; overflow-x: auto; border-radius: 8px;
  background: #070b10; border: 1px solid var(--line); font: 12.5px/1.55 var(--mono); color: #c9d6df; tab-size: 4;
}
.rd-file { position: absolute; top: 8px; left: 16px; font-size: 10px; color: var(--dim); letter-spacing: .04em; }
.rd-pre i { font-style: normal; }
.tk-c { color: #5f7486; }
.tk-s { color: #ffb86b; }
.tk-k { color: #7fd4ff; }
.tk-n { color: #ff8fd0; }
.tk-w { color: #5dffb4; }
.tk-f { color: #9cc2ff; }
.rd-note { margin-top: 10px; font-size: 13px; line-height: 1.55; color: var(--dim); max-width: 70ch; border-left: 2px solid var(--rd); padding-left: 10px; }
.rd-links { display: flex; gap: 18px; margin-top: 18px; font: 13px var(--mono); }
.rd-links a { color: var(--rd); }
.rd-links a:hover { text-decoration: underline; text-underline-offset: 3px; }
.rd-foot { margin-top: 22px; font: 12px var(--mono); color: var(--dim); }
.rd-foot a { color: var(--rd); }

@media (max-width: 640px) {
  .panel.rd-panel { padding: 84px 16px 32px; }
  .panel.rd-panel .close { top: 72px; right: 12px; }
  .rd-body { padding-left: 0; }
  .rd-pre { font-size: 11.5px; }
}