/* Experiments in Fiction — midnight literary laboratory */

:root {
  --ink: #0d0a13;
  --ink-2: #14101f;
  --ink-3: #080610;
  --parchment: #ece4d3;
  --dim: #9d94a8;
  --faint: rgba(236, 228, 211, 0.14);
  --hairline: rgba(236, 228, 211, 0.12);
  --amber: #e8a84c;
  --amber-dim: rgba(232, 168, 76, 0.55);
  --violet: #8b7bff;
  --violet-dim: rgba(139, 123, 255, 0.55);
  --serif-display: "Instrument Serif", Georgia, serif;
  --serif-book: "Literata", Georgia, serif;
  --mono: "Spline Sans Mono", ui-monospace, monospace;
}

* { margin: 0; padding: 0; box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  background: var(--ink);
  background-image:
    radial-gradient(ellipse 90% 50% at 50% -10%, rgba(139, 123, 255, 0.10), transparent 60%),
    radial-gradient(ellipse 70% 40% at 50% 110%, rgba(232, 168, 76, 0.07), transparent 60%);
  color: var(--parchment);
  font-family: var(--serif-book);
  font-size: 17px;
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
}

a { color: var(--amber); text-decoration: none; border-bottom: 1px solid var(--amber-dim); }
a:hover { color: #f5c47c; border-bottom-color: #f5c47c; }

.wrap { max-width: 1060px; margin: 0 auto; padding: 0 24px; }

/* ── header ─────────────────────────────── */
header.site {
  display: flex; align-items: center; justify-content: space-between;
  padding: 22px 0;
  border-bottom: 1px solid var(--hairline);
}
header.site .mark { display: flex; align-items: center; gap: 12px; border: none; }
header.site .mark img { width: 30px; height: 30px; }
header.site .mark span {
  font-family: var(--serif-display); font-size: 1.35rem; letter-spacing: 0.01em;
  color: var(--parchment);
}
header.site nav { font-family: var(--mono); font-size: 0.72rem; letter-spacing: 0.14em; text-transform: uppercase; }
header.site nav a { color: var(--dim); border: none; margin-left: 26px; }
header.site nav a:hover { color: var(--amber); }

/* ── hero ───────────────────────────────── */
.hero { text-align: center; padding: 110px 0 90px; position: relative; overflow: hidden; }
.hero .spark {
  position: absolute; font-size: 1rem; opacity: 0.5; pointer-events: none;
  animation: drift 9s ease-in-out infinite alternate;
}
.hero .spark.a { color: var(--amber); }
.hero .spark.v { color: var(--violet); }
@keyframes drift { from { transform: translateY(0); } to { transform: translateY(-14px); } }

.eyebrow {
  font-family: var(--mono); font-size: 0.72rem; letter-spacing: 0.34em;
  text-transform: uppercase; color: var(--dim); margin-bottom: 30px;
}
.hero h1 {
  font-family: var(--serif-display); font-weight: 400;
  font-size: clamp(3rem, 8.5vw, 6.2rem); line-height: 1.02;
  letter-spacing: -0.01em; margin-bottom: 34px;
}
.hero h1 em { font-style: italic; color: var(--amber); }
.hero .lede {
  max-width: 620px; margin: 0 auto; color: var(--dim);
  font-size: 1.1rem; text-align: center;
}
.hero .lede strong { color: var(--parchment); font-weight: 500; }

/* spectrum rule under hero */
.spectrum {
  height: 3px; max-width: 340px; margin: 56px auto 0; border-radius: 2px;
  background: linear-gradient(90deg, var(--amber), var(--violet));
  box-shadow: 0 0 24px rgba(139, 123, 255, 0.35);
}
.spectrum-legend {
  display: flex; justify-content: space-between; max-width: 340px; margin: 10px auto 0;
  font-family: var(--mono); font-size: 0.62rem; letter-spacing: 0.2em; text-transform: uppercase;
}
.spectrum-legend .h { color: var(--amber-dim); }
.spectrum-legend .m { color: var(--violet-dim); }

/* ── sections ───────────────────────────── */
section.block { padding: 90px 0; border-top: 1px solid var(--hairline); }
.section-no {
  font-family: var(--mono); font-size: 0.72rem; letter-spacing: 0.3em;
  text-transform: uppercase; color: var(--violet); text-align: center; margin-bottom: 14px;
}
section.block > .wrap > h2 {
  font-family: var(--serif-display); font-weight: 400; font-size: clamp(2rem, 4.5vw, 3rem);
  text-align: center; margin-bottom: 44px;
}
.prose { max-width: 640px; margin: 0 auto; color: var(--dim); font-size: 1.06rem; }
.prose p { margin-bottom: 1.4em; }
.prose p:last-child { margin-bottom: 0; }
.prose strong { color: var(--parchment); font-weight: 500; }

/* ── layers ─────────────────────────────── */
.layers { max-width: 700px; margin: 54px auto 0; }
.layer {
  display: grid; grid-template-columns: 64px 190px 1fr; gap: 18px; align-items: baseline;
  padding: 16px 6px; border-top: 1px solid var(--hairline);
}
.layer:last-child { border-bottom: 1px solid var(--hairline); }
.layer .no { font-family: var(--mono); font-size: 0.72rem; color: var(--violet); letter-spacing: 0.12em; }
.layer .name { font-family: var(--serif-display); font-size: 1.3rem; }
.layer .what { color: var(--dim); font-size: 0.94rem; }

.instrument-cta { text-align: center; margin-top: 46px; }
.instrument-cta a {
  font-family: var(--mono); font-size: 0.76rem; letter-spacing: 0.18em; text-transform: uppercase;
  border: 1px solid var(--amber-dim); border-radius: 3px; padding: 13px 26px; display: inline-block;
}
.instrument-cta a:hover { background: rgba(232, 168, 76, 0.08); }

/* ── the scale ──────────────────────────── */
.scale { max-width: 760px; margin: 0 auto; }
.level {
  display: grid; grid-template-columns: 120px 170px 1fr; gap: 20px; align-items: baseline;
  padding: 20px 10px; border-top: 1px solid var(--hairline);
}
.level:last-child { border-bottom: 1px solid var(--hairline); }
.level .lvl {
  font-family: var(--mono); font-size: 0.95rem; letter-spacing: 0.08em; font-weight: 500;
}
.level .lname { font-family: var(--serif-display); font-size: 1.45rem; }
.level .ldesc { color: var(--dim); font-size: 0.95rem; }

/* ── experiments index ──────────────────── */
.experiments { max-width: 780px; margin: 0 auto; }
.exp-card {
  display: block; border: 1px solid var(--hairline); border-radius: 5px;
  padding: 30px 34px; margin-bottom: 26px; background: var(--ink-2);
  transition: border-color 0.25s ease, transform 0.25s ease;
}
a.exp-card { color: inherit; border-bottom: 1px solid var(--hairline); }
.exp-card:hover { border-color: var(--violet-dim); transform: translateY(-2px); }
.exp-card .exp-top {
  display: flex; justify-content: space-between; align-items: baseline; margin-bottom: 10px;
  font-family: var(--mono); font-size: 0.7rem; letter-spacing: 0.2em; text-transform: uppercase; color: var(--dim);
}
.exp-card h3 { font-family: var(--serif-display); font-weight: 400; font-size: 2rem; margin-bottom: 8px; }
.exp-card .exp-summary { color: var(--dim); font-size: 0.98rem; margin-bottom: 18px; }
.exp-card .exp-bottom { display: flex; justify-content: space-between; align-items: center; gap: 18px; }
.exp-card .byline { font-size: 0.86rem; color: var(--dim); font-style: italic; }

.chip {
  font-family: var(--mono); font-size: 0.72rem; letter-spacing: 0.12em;
  border: 1px solid; border-radius: 3px; padding: 4px 10px; white-space: nowrap;
}

/* provenance strip */
.strip { display: flex; gap: 3px; height: 8px; }
.strip span { flex: 1; border-radius: 1px; }
.strip span.human { background: var(--amber); }
.strip span.ai { background: var(--violet); }
.strip span.mixed { background: linear-gradient(90deg, var(--amber), var(--violet)); }
.strip-mini { width: 130px; }

.coming {
  text-align: center; color: var(--dim); font-style: italic; margin-top: 8px; font-size: 0.95rem;
}

/* ── story page ─────────────────────────── */
.story-head { text-align: center; padding: 84px 0 50px; }
.story-head .exp-no {
  font-family: var(--mono); font-size: 0.72rem; letter-spacing: 0.34em;
  text-transform: uppercase; color: var(--violet); margin-bottom: 24px;
}
.story-head h1 {
  font-family: var(--serif-display); font-weight: 400;
  font-size: clamp(2.6rem, 6vw, 4.4rem); line-height: 1.05; margin-bottom: 26px;
}
.story-head .meta {
  font-family: var(--mono); font-size: 0.74rem; letter-spacing: 0.14em; text-transform: uppercase;
  color: var(--dim); display: flex; gap: 10px; justify-content: center; align-items: center; flex-wrap: wrap;
}
.story-head .meta .sep { color: var(--faint); }

.story-body {
  max-width: 620px; margin: 0 auto; padding: 30px 24px 90px;
  font-size: 1.22rem; line-height: 1.85;
}
.story-body p { margin-bottom: 1.5em; text-align: justify; hyphens: auto; }
.story-body > p:first-of-type::first-letter {
  font-family: var(--serif-display); font-size: 4.6em; float: left;
  line-height: 0.78; padding: 6px 12px 0 0; color: var(--amber);
}
.story-body hr {
  border: none; text-align: center; margin: 2.6em 0; height: auto;
}
.story-body hr::after {
  content: "\2733\00a0\00a0\2733\00a0\00a0\2733";
  color: var(--violet-dim); font-size: 0.85rem; letter-spacing: 0.2em;
}
.story-body em { font-style: italic; }

/* ── laboratory record ──────────────────── */
.lab-record {
  max-width: 700px; margin: 0 auto 100px; border: 1px solid var(--hairline);
  border-radius: 6px; background: var(--ink-2); overflow: hidden;
}
.lab-record .lab-head {
  padding: 26px 36px; border-bottom: 1px solid var(--hairline);
  display: flex; justify-content: space-between; align-items: baseline;
}
.lab-record .lab-head h2 {
  font-family: var(--serif-display); font-weight: 400; font-size: 1.7rem;
}
.lab-record .lab-head .lab-tag {
  font-family: var(--mono); font-size: 0.66rem; letter-spacing: 0.22em; text-transform: uppercase; color: var(--dim);
}
.lab-record .lab-inner { padding: 30px 36px; }
.lab-record .strip { height: 12px; margin-bottom: 10px; }
.strip-labels {
  display: flex; gap: 3px; margin-bottom: 30px;
  font-family: var(--mono); font-size: 0.56rem; letter-spacing: 0.06em; text-transform: uppercase; color: var(--dim);
}
.strip-labels span { flex: 1; text-align: center; }

.lab-table { width: 100%; border-collapse: collapse; margin-bottom: 30px; }
.lab-table td {
  padding: 10px 4px; border-top: 1px solid var(--hairline);
  font-size: 0.92rem; vertical-align: baseline;
}
.lab-table td.l-name { font-family: var(--serif-display); font-size: 1.08rem; width: 34%; }
.lab-table td.l-what { color: var(--dim); font-size: 0.85rem; }
.lab-table td.l-who { text-align: right; font-family: var(--mono); font-size: 0.7rem; letter-spacing: 0.12em; text-transform: uppercase; width: 18%; }
.l-who.human { color: var(--amber); }
.l-who.ai { color: var(--violet); }
.l-who.mixed { background: linear-gradient(90deg, var(--amber), var(--violet)); -webkit-background-clip: text; background-clip: text; color: transparent; }

.human-input { margin-bottom: 30px; }
.human-input h3 {
  font-family: var(--mono); font-size: 0.68rem; letter-spacing: 0.24em; text-transform: uppercase;
  color: var(--amber); margin-bottom: 12px; font-weight: 500;
}
.human-input p { color: var(--dim); font-size: 0.98rem; }

.verdict {
  border-top: 1px solid var(--hairline); padding-top: 26px;
  display: flex; align-items: center; justify-content: space-between; gap: 20px; flex-wrap: wrap;
}
.verdict .v-label { font-family: var(--mono); font-size: 0.68rem; letter-spacing: 0.24em; text-transform: uppercase; color: var(--dim); }
.verdict .v-value { font-family: var(--serif-display); font-size: 2.2rem; }
.back-link { text-align: center; margin: 0 0 90px; font-family: var(--mono); font-size: 0.74rem; letter-spacing: 0.18em; text-transform: uppercase; }

/* ── footer ─────────────────────────────── */
footer.site {
  border-top: 1px solid var(--hairline); padding: 46px 0 60px; text-align: center;
}
footer.site .f-line { color: var(--dim); font-size: 0.92rem; font-style: italic; margin-bottom: 18px; }
footer.site .f-links { font-family: var(--mono); font-size: 0.7rem; letter-spacing: 0.16em; text-transform: uppercase; }
footer.site .f-links a { color: var(--dim); border: none; margin: 0 14px; }
footer.site .f-links a:hover { color: var(--amber); }

/* ── 404 ────────────────────────────────── */
.notfound { text-align: center; padding: 140px 24px; }
.notfound h1 { font-family: var(--serif-display); font-weight: 400; font-size: 5rem; margin-bottom: 18px; }
.notfound p { color: var(--dim); margin-bottom: 30px; }

@media (max-width: 700px) {
  .layer { grid-template-columns: 44px 1fr; }
  .layer .what { grid-column: 2; }
  .level { grid-template-columns: 74px 1fr; }
  .level .ldesc { grid-column: 2; }
  .lab-table td.l-what { display: none; }
  .story-body p { text-align: left; }
  header.site nav a { margin-left: 14px; }
}