/* portfolio.apogy.de — the sky of apogy.de, the components of learn.apogy.de.
   Tokens, star field and glass card are copied from apogy-web (site/assets/styles.css),
   header, buttons, panels and prev/next from learn (site/assets/styles.css). */
:root {
  --bg: #070912;
  --bg-2: #0d1130;
  --panel: #111533;
  --panel-2: #161b40;
  --glass: rgba(17, 21, 51, .62);
  --line: #262c5a;
  --text: #e7e9ff;
  --muted: #9aa0c8;
  --soft: #c9cdf0;
  --violet: #8b5cf6;
  --cyan: #22d3ee;
  --green: #4ade80;
  --amber: #fbbf24;
  --red: #f87171;
  --sans: ui-sans-serif, system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  --mono: ui-monospace, "SF Mono", "Cascadia Code", Consolas, "Liberation Mono", monospace;
  --head: 56px;
  color-scheme: dark;
}

*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  background:
    radial-gradient(ellipse 80% 60% at 70% 20%, rgba(139, 92, 246, .16), transparent 60%),
    linear-gradient(180deg, var(--bg) 0%, var(--bg-2) 100%);
  background-attachment: fixed;
  background-color: var(--bg);
  color: var(--text);
  font-family: var(--sans);
  font-size: 17px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  overflow-x: hidden;
}
a { color: var(--cyan); text-underline-offset: 3px; }
a:hover { color: #7ee7f7; }
:focus-visible { outline: 2px solid var(--cyan); outline-offset: 2px; }
code { font-family: var(--mono); font-size: .88em; background: var(--panel-2); padding: .1em .35em; border-radius: 5px; }

/* ---------- star field (apogy.de) ---------- */
.sky { position: fixed; inset: 0; pointer-events: none; z-index: 0; }
.stars { position: absolute; inset: 0; background-repeat: repeat; }
.s1 {
  background-image:
    radial-gradient(1px 1px at 20px 30px, #fff, transparent),
    radial-gradient(1px 1px at 140px 90px, #cfd3ff, transparent),
    radial-gradient(1px 1px at 90px 160px, #fff, transparent),
    radial-gradient(1px 1px at 230px 210px, #b9f3ff, transparent),
    radial-gradient(1px 1px at 270px 60px, #fff, transparent);
  background-size: 300px 260px;
  opacity: .55;
}
.s2 {
  background-image:
    radial-gradient(1.5px 1.5px at 60px 120px, #fff, transparent),
    radial-gradient(1.5px 1.5px at 330px 40px, #d9dcff, transparent),
    radial-gradient(1.5px 1.5px at 410px 300px, #fff, transparent);
  background-size: 480px 380px;
  animation: twinkle 6s ease-in-out infinite alternate;
}
.s3 {
  background-image:
    radial-gradient(2px 2px at 150px 250px, #b9f3ff, transparent),
    radial-gradient(2px 2px at 520px 120px, #fff, transparent);
  background-size: 700px 520px;
  animation: twinkle 9s ease-in-out infinite alternate-reverse;
}
@keyframes twinkle { from { opacity: .25; } to { opacity: .9; } }
.top, .preview-bar, .wrap, .footer { position: relative; z-index: 1; }

/* ---------- header / footer (learn) ---------- */
.top {
  position: sticky; top: 0; z-index: 30; height: var(--head);
  display: flex; align-items: center; gap: 10px; padding: 0 max(16px, env(safe-area-inset-left));
  background: rgba(7, 9, 18, .86); -webkit-backdrop-filter: blur(10px); backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--line); overflow-x: auto; white-space: nowrap;
}
.brand { font-weight: 700; letter-spacing: .02em; color: var(--text); text-decoration: none; }
.brand span { color: var(--violet); }
.brand:hover { color: var(--text); }
.top .sep { color: var(--line); }
.top a:not(.brand) { color: var(--muted); text-decoration: none; font-size: 15px; }
.top a:not(.brand):hover { color: var(--text); }
.top .spacer { flex: 1; }
.top a.pill { font-size: 13px; border: 1px solid var(--line); border-radius: 999px; padding: 3px 11px; }
.top a.pill:hover { border-color: var(--violet); }
.preview-bar { background: rgba(251, 191, 36, .12); color: var(--amber); font: 13px var(--mono); text-align: center; padding: 4px 16px; border-bottom: 1px solid rgba(251, 191, 36, .3); }
.footer {
  margin-top: auto; padding: 24px 16px 28px; text-align: center;
  font-family: var(--mono); font-size: .75rem; color: var(--muted); letter-spacing: .08em;
}
.footer a { color: var(--muted); }
.footer a:hover, .footer a:focus-visible { color: var(--text); }

/* ---------- layout and type ---------- */
.wrap { width: 100%; max-width: 920px; margin: 0 auto; padding: 40px max(16px, env(safe-area-inset-right)) 56px max(16px, env(safe-area-inset-left)); }
.eyebrow { font-size: 13px; letter-spacing: .08em; text-transform: uppercase; color: var(--violet); font-weight: 600; }
h1 { font-size: clamp(28px, 5vw, 38px); line-height: 1.15; font-weight: 700; letter-spacing: -.01em; margin: 8px 0 18px; text-wrap: balance; }
h2 { font-size: 22px; line-height: 1.25; font-weight: 700; margin: 44px 0 12px; text-wrap: balance; }
h2.eyebrow { font-size: 13px; line-height: 1.4; margin: 52px 0 14px; }
h3 { font-size: 1.1rem; font-weight: 600; margin: 0; }
p { margin: 0 0 16px; }
p, li { max-width: 68ch; }
.lede { font-size: 19px; color: var(--soft); }
.note, .empty { font-size: 14px; color: var(--muted); }
.empty { font-family: var(--mono); font-size: 13px; border: 1px dashed var(--line); border-radius: 12px; padding: 14px 16px; margin: 0; }
.row { display: flex; justify-content: space-between; align-items: center; gap: 12px; flex-wrap: wrap; }
.meta { display: flex; flex-wrap: wrap; gap: 8px; align-items: center; }
.meta .date, .entries .date { font: 13px var(--mono); color: var(--muted); }
.status { font: 12px var(--mono); color: var(--muted); margin-left: auto; }
.facts { display: flex; flex-wrap: wrap; gap: 6px; list-style: none; padding: 0; margin: 12px 0; }
.facts li { font: 12.5px var(--mono); color: var(--muted); border: 1px solid var(--line); border-radius: 999px; padding: 2px 11px; }

/* gradient headline, as apogy.de's tagline */
.grad {
  background: linear-gradient(90deg, var(--text), #b9c0ff 60%, var(--cyan));
  -webkit-background-clip: text; background-clip: text; color: transparent;
}

.hero { margin-bottom: 8px; }
.visually-hidden {
  position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px;
  overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; border: 0;
}
/* the homepage starts straight with its first section (About, else Projects) */
.wrap > .visually-hidden + *, .wrap > .visually-hidden + * > h2.eyebrow:first-child { margin-top: 0; }

/* ---------- tags ---------- */
.tag { display: inline-block; font: 600 11px var(--mono); text-transform: uppercase; letter-spacing: .06em; padding: 2px 9px; border-radius: 999px; border: 1px solid currentColor; }
.k-chip { color: var(--cyan); } .k-project { color: var(--violet); }
.k-decision { color: var(--violet); } .k-redesign { color: var(--red); } .k-step { color: var(--muted); }
.k-experiment { color: var(--cyan); } .k-tooling { color: var(--amber); }
.st-open { color: var(--cyan); fill: var(--cyan); } .st-adopted { color: var(--green); fill: var(--green); } .st-dropped { color: var(--muted); fill: var(--muted); }
.draft { color: var(--amber); border-style: dashed; }
.lane { font: 12px var(--mono); color: var(--muted); }

/* ---------- glass panels and cards (apogy.de card, learn borders) ---------- */
.card, .panel, .scroll, .metrics, .entries, .stats div, .pn a {
  background: var(--glass); border: 1px solid var(--line);
  -webkit-backdrop-filter: blur(8px); backdrop-filter: blur(8px);
}
.cards { display: grid; grid-template-columns: repeat(auto-fill, minmax(260px, 1fr)); gap: 14px; }
.card {
  display: block; min-width: 0; padding: 18px 20px; border-radius: 16px; color: inherit; text-decoration: none;
  transition: border-color .15s, transform .15s;
}
a.card:hover { border-color: var(--violet); transform: translateY(-1px); color: inherit; }
a.card:hover h3 { color: var(--cyan); }
.card.wide { grid-column: 1 / -1; }
.card-head { display: flex; align-items: center; gap: 8px; margin-bottom: 10px; }
.card h3 { font-size: 1.25rem; transition: color .15s; }
.card p { color: var(--muted); margin: 6px 0 0; }
.host { display: inline-block; margin-top: 10px; font: 13px var(--mono); color: var(--cyan); }
.mini { overflow-x: auto; margin: 14px -4px 4px; }
.panel { border-radius: 16px; padding: 4px 22px 14px; margin-top: 52px; }
.panel > h2:first-child { margin-top: 18px; }
.panel p { color: var(--soft); }

/* ---------- journal timeline ---------- */
.scroll { overflow-x: auto; border-radius: 16px; padding: 6px 0; margin-bottom: 8px; }
.wrap > .scroll:first-child { margin-bottom: 32px; }
.timeline { display: block; }
.timeline text { font-family: var(--mono); fill: var(--text); }
.lane-name { font-size: 12px; }
.lane-st { font-size: 10px; }
.lane-line { stroke: var(--line); stroke-width: 3; fill: none; }
.lane-line.idea { stroke-width: 2; stroke-dasharray: 5 4; }
.lane-line.st-open { stroke: var(--cyan); } .lane-line.st-adopted { stroke: var(--green); } .lane-line.st-dropped { stroke: var(--muted); }
.drop { stroke: var(--muted); stroke-width: 2; fill: none; }
.band { fill: rgba(248, 113, 113, .1); }
.date { font-size: 11px; fill: var(--muted) !important; }
.m { stroke: var(--panel); stroke-width: 2; }
.m-decision { fill: var(--violet); } .m-step { fill: var(--muted); } .m-experiment { fill: var(--cyan); } .m-tooling { fill: var(--amber); }
.m-redesign { fill: var(--panel); stroke: var(--red); stroke-width: 3; }
.m.on, .mark:hover .m, .mark:focus-visible .m { stroke: var(--text); stroke-width: 2.5; }
.snap-dot { fill: var(--green); }
.legend { display: flex; flex-wrap: wrap; gap: 4px 16px; font-size: 13px; color: var(--muted); align-items: center; }
.legend span { display: inline-flex; align-items: center; gap: 6px; }
.legend i { display: inline-block; width: 14px; height: 3px; border-radius: 2px; }
.metrics { width: 100%; height: auto; border-radius: 16px; }
.metrics .grid { stroke: var(--line); }
.metrics .axis { fill: var(--muted); font: 11px var(--mono); }
.line-cells { stroke: var(--violet); stroke-width: 2; fill: none; } .dot-cells { fill: var(--violet); } .k-cells { background: var(--violet); }
.line-ff { stroke: var(--cyan); stroke-width: 2; fill: none; } .dot-ff { fill: var(--cyan); } .k-ff { background: var(--cyan); }

/* ---------- entry list (learn's module list) ---------- */
.entries { list-style: none; padding: 0 16px; margin: 0; border-radius: 16px; }
.entries li { border-top: 1px solid var(--line); max-width: none; }
.entries li:first-child { border-top: 0; }
.entries a { display: grid; grid-template-columns: 100px minmax(0, 1fr); gap: 2px 14px; padding: 13px 2px; color: inherit; text-decoration: none; }
.entries a:hover .t { color: var(--cyan); }
.entries .date { grid-row: span 3; padding-top: 3px; }
.entries .t { font-weight: 600; }
.entries .sum { font-size: 14px; color: var(--muted); }
@media (max-width: 520px) { .entries a { grid-template-columns: minmax(0, 1fr); } .entries .date { grid-row: auto; } }

/* ---------- pages ---------- */
.prose h2 { margin-top: 36px; }
.prose p, .prose li { color: var(--soft); }
.prose strong { color: var(--text); }
.tbl { overflow-x: auto; }
table { border-collapse: collapse; font-size: 15px; margin: 8px 0 16px; }
th, td { text-align: left; padding: 8px 16px 8px 0; border-bottom: 1px solid var(--line); vertical-align: top; }
th { font-weight: 600; font-size: 13px; text-transform: uppercase; letter-spacing: .05em; color: var(--muted); }
.btn {
  display: inline-flex; align-items: center; background: var(--violet); color: #fff; border: 0; border-radius: 10px;
  padding: 9px 16px; font-weight: 600; font-size: 15px; min-height: 44px; text-decoration: none;
}
.btn:hover { filter: brightness(1.12); color: #fff; }
.btn.ghost { background: none; border: 1px solid var(--line); color: var(--text); font-weight: 500; }
.stats { display: grid; grid-template-columns: repeat(auto-fit, minmax(120px, 1fr)); gap: 8px; margin: 10px 0; }
.stats div { border-radius: 12px; padding: 8px 12px; }
.stats b { font: 500 21px var(--mono); }
.stats span { display: block; font-size: 12px; color: var(--muted); }
.stats .d { display: inline; font: 12px var(--mono); margin-left: 4px; }
.stats .warn b { color: var(--red); }
iframe { width: 100%; height: 640px; border: 1px solid var(--line); border-radius: 16px; background: var(--bg); margin-top: 8px; }
.pn { display: flex; gap: 10px; flex-wrap: wrap; margin-top: 48px; border-top: 1px solid var(--line); padding-top: 22px; }
.pn a { flex: 1 1 220px; border-radius: 12px; padding: 12px 14px; text-decoration: none; color: var(--text); }
.pn a small { display: block; color: var(--muted); font-size: 12px; text-transform: uppercase; letter-spacing: .08em; }
.pn a.next { text-align: right; }
.pn a:hover { border-color: var(--violet); }

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation: none !important; transition: none !important; }
  html { scroll-behavior: auto; }
}

/* ---------- figures in journal entries (static SVG/PNG from chips/<slug>/figures/) ---------- */
.prose figure { margin: 26px 0; }
.prose figure img { display: block; width: 100%; height: auto; border-radius: 14px; border: 1px solid var(--line); background: var(--panel); }
.prose figcaption { font-size: 14px; color: var(--muted); margin-top: 8px; }