:root {
  --bg: #05060d;
  --ink: #e6e9f5;
  --muted: #99a0bd;
  --line: rgba(160, 175, 230, .18);
  --card: rgba(16, 19, 36, .78);
  --accent: #ffcf70;
  --font: "Segoe UI", system-ui, -apple-system, Roboto, "Helvetica Neue", Arial, sans-serif;
  --mono: ui-monospace, "Cascadia Code", "JetBrains Mono", Menlo, Consolas, monospace;
}

* { box-sizing: border-box; }
html { color-scheme: dark; }
body {
  margin: 0;
  background: radial-gradient(ellipse at 30% 10%, #12163a 0%, var(--bg) 60%) fixed, var(--bg);
  color: var(--ink);
  font: 16px/1.55 var(--font);
  overflow-x: hidden;
}
#field { position: fixed; inset: 0; width: 100%; height: 100%; z-index: -1; pointer-events: none; }

a { color: var(--accent); }
h1, h2, h3 { line-height: 1.2; margin: 0 0 .4em; }
h1 { font-size: clamp(1.6rem, 4vw, 2.6rem); letter-spacing: -.01em; }
h2 { font-size: 1.4rem; }
h3 { font-size: 1rem; }
.kicker { font: 600 .72rem/1.3 var(--mono); text-transform: uppercase; letter-spacing: .14em; color: var(--muted); margin: 0 0 .5em; }
.sub, .meta { color: var(--muted); }
.meta { font: .8rem var(--mono); }

button {
  font: inherit; color: var(--ink); background: rgba(255,255,255,.06);
  border: 1px solid var(--line); border-radius: 999px; padding: .4em 1em; cursor: pointer;
}
button:hover:not(:disabled) { background: rgba(255,255,255,.12); }
button:disabled { opacity: .55; cursor: default; }
button:focus-visible, a:focus-visible, .star:focus-visible { outline: 2px solid var(--accent); outline-offset: 3px; }
.linkish { background: none; border: 0; padding: 0; color: var(--accent); text-decoration: underline; border-radius: 0; }
.linkish:hover:not(:disabled) { background: none; }
.small { font-size: .8rem; }

header.top, main, footer { max-width: 1240px; margin: 0 auto; padding: 0 16px; }
header.top { display: flex; flex-wrap: wrap; gap: 16px; justify-content: space-between; align-items: flex-end; padding-top: 32px; }
.controls { display: flex; flex-direction: column; gap: 8px; align-items: flex-end; }
.lens { display: inline-flex; border: 1px solid var(--line); border-radius: 999px; padding: 3px; }
.lens button { border: 0; background: none; }
.lens button[aria-pressed="true"] { background: rgba(255, 207, 112, .18); color: var(--accent); }
#status { font: .75rem var(--mono); color: var(--muted); max-width: 32em; text-align: right; }
#status::before { content: "\25CF  "; color: #777; }
#status[data-kind="on"]::before { color: #6fdc8c; }
#status[data-kind="wait"]::before { color: var(--accent); }

main > section { margin: 32px 0; }

/* ---------- chart */
#chart { position: relative; }
.chart-tools { display: flex; flex-wrap: wrap; gap: 8px; align-items: center; margin-bottom: 8px; }
#walk-note { color: var(--muted); font-style: italic; font-size: .9rem; }
.sky-wrap { border: 1px solid var(--line); border-radius: 16px; background: rgba(5, 7, 20, .35); overflow: hidden; }
#sky { display: block; width: 100%; height: auto; }

.links line { stroke-width: 1; }
.thread { fill: none; stroke: rgba(255, 207, 112, .16); stroke-width: 1.2; stroke-dasharray: 3 6; transition: stroke .3s, stroke-width .3s; }
.thread.on { stroke: rgba(255, 207, 112, .75); stroke-width: 2; }
.thread.walk { stroke: #fff2c9; stroke-width: 3; stroke-dasharray: none; }
.clabel { font: 600 22px var(--mono); text-anchor: middle; letter-spacing: .08em; opacity: .85; }
.star { cursor: pointer; transition: opacity .3s; }
.star .halo { filter: url(#soft); animation: twinkle 5s ease-in-out infinite; transform-box: fill-box; transform-origin: center; }
.star .slabel { font: 15px var(--font); fill: var(--ink); text-anchor: middle; opacity: 0; transition: opacity .2s; pointer-events: none; paint-order: stroke; stroke: var(--bg); stroke-width: 4px; }
.star:hover .slabel, .star:focus .slabel, .star.selected .slabel, .star.near .slabel { opacity: 1; }
.star.selected .core { stroke: #fff; stroke-width: 2; }
.star.dim { opacity: .28; }
@keyframes twinkle { 50% { transform: scale(1.35); } }
@media (min-width: 900px) { .star .slabel { opacity: .55; } }

#panel {
  --hue: 40;
  position: absolute; top: 48px; right: 12px; width: min(380px, calc(100% - 24px));
  max-height: calc(100% - 60px); overflow: auto;
  background: var(--card); backdrop-filter: blur(8px);
  border: 1px solid hsl(var(--hue) 70% 60% / .4); border-radius: 14px; padding: 18px 18px 14px;
  box-shadow: 0 10px 40px rgba(0,0,0,.5);
}
#panel.left { right: auto; left: 12px; }
#panel .kicker { color: hsl(var(--hue) 80% 75%); padding-right: 36px; }
#p-close { position: absolute; top: 8px; right: 8px; width: 32px; height: 32px; padding: 0; font-size: 1.2rem; }
#p-summary { font-size: 1.02rem; }
body[data-lens="kat"] #p-summary { font-style: italic; }
.actions { display: flex; flex-wrap: wrap; gap: 12px; align-items: center; }
#p-threads { padding-left: 1.1em; margin: 0 0 1em; font-size: .9rem; color: var(--muted); }
#p-threads li { margin: .3em 0; }
#p-trivia { border-top: 1px solid var(--line); padding-top: .6em; font-size: .9rem; }

@media (max-width: 760px) {
  #panel, #panel.left { position: fixed; top: auto; bottom: 0; left: 0; right: 0; width: 100%; max-height: 62vh; border-radius: 16px 16px 0 0; z-index: 5; }
  .controls { align-items: flex-start; }
  #status { text-align: left; }
}

/* ---------- transmission */
.tx { background: var(--card); border: 1px solid var(--line); border-left: 3px solid var(--accent); border-radius: 12px; padding: 16px 18px; }
#tx-text { font-size: 1.05rem; margin: 0 0 .6em; }
.tx-foot { display: flex; justify-content: space-between; gap: 12px; flex-wrap: wrap; margin: 0; font-size: .85rem; }

/* ---------- list */
.grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(min(100%, 340px), 1fr)); gap: 16px; }
.cluster { --hue: 40; background: var(--card); border: 1px solid var(--line); border-top: 3px solid hsl(var(--hue) 70% 65%); border-radius: 12px; padding: 14px 16px; }
.cluster h3 { color: hsl(var(--hue) 80% 78%); font-size: 1.05rem; }
.cblurb { color: var(--muted); margin-top: 0; font-size: .9rem; }
.cluster ul, #log-list { list-style: none; padding: 0; margin: 0; }
.cluster li { border-top: 1px solid var(--line); padding: .6em 0; }
.cluster li p { margin: .25em 0 0; font-size: .92rem; }
body[data-lens="kat"] .cluster li p { font-style: italic; }
.lhead { display: flex; flex-wrap: wrap; gap: 4px 10px; align-items: baseline; }
.lhead a { font-weight: 600; }

/* ---------- starlog */
#log-form { display: grid; gap: 10px; max-width: 640px; background: var(--card); border: 1px solid var(--line); border-radius: 12px; padding: 16px; }
#log-form .row { display: grid; grid-template-columns: repeat(auto-fit, minmax(200px, 1fr)); gap: 10px; }
#log-form label { display: grid; gap: 4px; font-size: .85rem; color: var(--muted); }
#log-form input, #log-form textarea, #log-form select {
  font: inherit; color: var(--ink); background: rgba(0,0,0,.35); border: 1px solid var(--line); border-radius: 8px; padding: .5em .6em; width: 100%;
}
#log-form button[type=submit] { justify-self: start; }
#log-note { font-size: .85rem; color: var(--muted); }
.hp { position: absolute; left: -9999px; width: 1px; height: 1px; overflow: hidden; }
#log-list { margin-top: 16px; max-width: 640px; }
#log-list li { border-top: 1px solid var(--line); padding: .7em 0; }
#log-list li p { margin: .2em 0 0; white-space: pre-wrap; overflow-wrap: anywhere; }
#log-list .empty { color: var(--muted); }

footer { color: var(--muted); font-size: .85rem; padding-bottom: 40px; border-top: 1px solid var(--line); padding-top: 16px; }

@media (prefers-reduced-motion: reduce) {
  .star .halo { animation: none; }
  * { transition: none !important; }
}