/* ============================================================
   receiver sessions — iso50-style design system
   a fan tribute to tycho · light mode default, dark for music
   ============================================================ */

:root {
  /* palette — pulled from the art, sun-bleached */
  --sand:   #f0ca9e;
  --cream:  #f4e6cf;
  --peach:  #e89866;
  --ember:  #d56538;
  --rust:   #96372f;
  --ink:    #1f232b;
  --slate:  #2e4b54;
  --teal:   #213845;
  --dune:   #d2a367;
  --bone:   #decd9e;

  /* semantic — light */
  --bg:        var(--sand);
  --bg-alt:    var(--cream);
  --text:      var(--ink);
  --text-soft: #5a5148;
  --heading:   var(--rust);
  --accent:    var(--ember);
  --rule:      rgba(31, 35, 43, 0.28);
  --rule-soft: rgba(31, 35, 43, 0.14);
  --label:     rgba(31, 35, 43, 0.55);

  /* type */
  --sans: "Inter", "Helvetica Neue", "Neue Haas Grotesk", Arial, sans-serif;
  --mono: "IBM Plex Mono", "SFMono-Regular", Consolas, monospace;

  /* type scale */
  --t-display: clamp(2.6rem, 6.5vw, 5.4rem);
  --t-h1:      clamp(2.1rem, 4.6vw, 3.6rem);
  --t-h2:      clamp(1.5rem, 2.6vw, 2.1rem);
  --t-h3:      1.15rem;
  --t-body:    1.0625rem;
  --t-label:   0.6875rem; /* 11px uppercase scientific labels */

  /* spacing scale */
  --s-1: 0.5rem;
  --s-2: 1rem;
  --s-3: 1.5rem;
  --s-4: 2.5rem;
  --s-5: 4rem;
  --s-6: 6.5rem;
  --s-7: 10rem;

  --maxw: 1200px;
  --gutter: clamp(1.25rem, 5vw, 4rem);
}

/* dark variant — music page only */
.theme-dark {
  --bg:        var(--ink);
  --bg-alt:    #262b33;
  --text:      var(--bone);
  --text-soft: #b3a184;
  --heading:   var(--bone);
  --accent:    var(--ember);
  --rule:      rgba(222, 205, 158, 0.26);
  --rule-soft: rgba(222, 205, 158, 0.13);
  --label:     var(--dune);
}

/* ---------- reset ---------- */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { -webkit-text-size-adjust: 100%; }
body {
  font-family: var(--sans);
  font-size: var(--t-body);
  line-height: 1.6;
  color: var(--text);
  background: var(--bg);
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}
img { display: block; max-width: 100%; }
a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; text-underline-offset: 0.2em; }
ul { list-style: none; }
button { font: inherit; color: inherit; background: none; border: 0; cursor: pointer; }

/* accessibility — keyboard users see the ember ring, nobody else does */
:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 3px;
}
.skip-link {
  position: absolute;
  top: -100%;
  left: var(--gutter);
  z-index: 9999;
  background: var(--ink);
  color: var(--bone);
  padding: 0.6rem 1rem;
  font-size: var(--t-label);
  letter-spacing: 0.18em;
  text-transform: uppercase;
}
.skip-link:focus { top: 0.5rem; color: var(--bone); text-decoration: none; }

/* ---------- film grain — everywhere, always subtle ---------- */
.grain::after {
  content: "";
  position: fixed;
  inset: -50%;
  z-index: 9000;
  pointer-events: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='240' height='240'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='2' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
  opacity: 0.045;
}

/* ---------- typography helpers ---------- */
.label {
  font-size: var(--t-label);
  font-weight: 500;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--label);
}
.mono {
  font-family: var(--mono);
  font-size: 0.78rem;
  letter-spacing: 0.04em;
}
h1, h2, h3 {
  font-weight: 600;
  letter-spacing: -0.02em;
  line-height: 1.04;
  color: var(--heading);
  text-transform: lowercase;
}
h1 { font-size: var(--t-h1); }
h2 { font-size: var(--t-h2); }
h3 { font-size: var(--t-h3); }

/* ---------- layout ---------- */
.wrap {
  max-width: var(--maxw);
  margin-inline: auto;
  padding-inline: var(--gutter);
}
.rule { border: 0; border-top: 1px solid var(--rule); }
.rule-soft { border: 0; border-top: 1px solid var(--rule-soft); }
section { padding-block: var(--s-6); }
.section-head {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: var(--s-3);
  padding-bottom: var(--s-2);
  border-bottom: 1px solid var(--rule);
  margin-bottom: var(--s-4);
}

/* gentle load fade — the only motion allowed besides the hero drift */
.fade-in { animation: fade 1.1s ease-out both; }
.fade-in-d1 { animation: fade 1.1s 0.15s ease-out both; }
.fade-in-d2 { animation: fade 1.1s 0.3s ease-out both; }
@keyframes fade { from { opacity: 0; } to { opacity: 1; } }

/* ---------- header ---------- */
.site-header {
  position: relative;
  z-index: 100;
  background: var(--bg);
  border-bottom: 1px solid var(--rule);
}
.site-header .wrap {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 72px;
}
.wordmark {
  font-size: 1.05rem;
  font-weight: 600;
  letter-spacing: -0.01em;
  text-transform: lowercase;
  color: var(--heading);
  display: flex;
  align-items: center;
  gap: 0.7rem;
}
.wordmark:hover { text-decoration: none; }
.wordmark svg { display: block; }
.main-nav { display: flex; gap: clamp(1.2rem, 3vw, 2.6rem); }
.main-nav a {
  font-size: var(--t-label);
  font-weight: 500;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--text-soft);
  padding-block: 0.4rem;
  border-bottom: 1px solid transparent;
}
.main-nav a:hover { color: var(--accent); text-decoration: none; }
.main-nav a[aria-current="page"] {
  color: var(--accent);
  border-bottom-color: var(--accent);
}
.nav-toggle { display: none; }

/* ---------- heroes ---------- */
.hero {
  position: relative;
  overflow: hidden;
  min-height: min(78vh, 780px);
  display: flex;
  align-items: flex-end;
  background: var(--teal);
}
.hero img {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center 62%;
  transform: scale(1.12);
  animation: drift 55s ease-in-out infinite alternate;
}
@keyframes drift {
  from { transform: scale(1.12) translateX(-1.6%); }
  to   { transform: scale(1.12) translateX(1.6%); }
}
.hero::before {
  content: "";
  position: absolute;
  inset: 0;
  z-index: 1;
  background: linear-gradient(to top, rgba(31, 35, 43, 0.72), rgba(31, 35, 43, 0.28) 45%, rgba(31, 35, 43, 0.03) 70%);
}
.hero .wrap { position: relative; z-index: 2; width: 100%; padding-bottom: var(--s-5); }
.hero .label, .page-hero .label {
  color: rgba(244, 230, 207, 0.88);
  margin-bottom: var(--s-2);
  display: block;
  text-shadow: 0 1px 14px rgba(31, 35, 43, 0.45);
}
.hero h1 {
  color: var(--cream);
  font-size: var(--t-display);
  max-width: 14ch;
  text-shadow: 0 1px 18px rgba(31, 35, 43, 0.4);
}
.hero-sub {
  color: rgba(244, 230, 207, 0.85);
  max-width: 46ch;
  margin-top: var(--s-2);
  text-shadow: 0 1px 12px rgba(31, 35, 43, 0.45);
}
.page-hero .label, .page-hero .hero-sub { text-shadow: none; }
.page-hero .label { color: var(--label); }
.page-hero .hero-sub { color: var(--text-soft); }

/* page hero — shorter, washed, type-forward */
.page-hero {
  position: relative;
  overflow: hidden;
  min-height: 42vh;
  display: flex;
  align-items: flex-end;
  background: var(--sand);
}
.page-hero img {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center 60%;
  opacity: 0.5;
}
.theme-dark .page-hero { background: var(--ink); }
.theme-dark .page-hero img { opacity: 0.32; }
.page-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(to top, var(--bg) 0%, var(--bg) 30%, rgba(0, 0, 0, 0) 72%);
}
.page-hero .wrap { position: relative; z-index: 2; width: 100%; padding-bottom: var(--s-4); }
.page-hero .label { display: block; margin-bottom: var(--s-2); }

/* ---------- track rows ---------- */
.track-row {
  display: grid;
  grid-template-columns: 64px 1fr auto auto;
  align-items: center;
  gap: var(--s-3);
  padding-block: var(--s-2);
  border-bottom: 1px solid var(--rule-soft);
}
.track-row:first-of-type { border-top: 1px solid var(--rule); }
.track-thumb {
  width: 64px;
  height: 64px;
  object-fit: cover;
}
.track-title {
  font-size: 1.3rem;
  font-weight: 600;
  letter-spacing: -0.01em;
  text-transform: lowercase;
  color: var(--heading);
  line-height: 1.15;
}
.track-meta {
  margin-top: 0.3rem;
  color: var(--label);
  font-family: var(--mono);
  font-size: 0.72rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
}
.track-meta .ai-tag {
  color: var(--accent);
}
.track-dur {
  font-family: var(--mono);
  font-size: 0.8rem;
  color: var(--label);
}
.play-btn {
  width: 40px;
  height: 40px;
  border: 1px solid var(--rule);
  border-radius: 50%;
  display: grid;
  place-items: center;
  color: var(--text);
  transition: border-color 0.25s ease, color 0.25s ease;
}
.play-btn:hover { border-color: var(--accent); color: var(--accent); }
.play-btn svg { width: 12px; height: 12px; margin-left: 2px; }
.play-btn.playing svg .ico-play { display: none; }
.play-btn:not(.playing) svg .ico-pause { display: none; }

/* ---------- filter pills ---------- */
.filters {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem 1.6rem;
  padding-bottom: var(--s-2);
  border-bottom: 1px solid var(--rule);
  margin-bottom: var(--s-4);
}
.filters button {
  font-size: var(--t-label);
  font-weight: 500;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--label);
  padding-bottom: 0.35rem;
  border-bottom: 1px solid transparent;
}
.filters button:hover { color: var(--text); }
.filters button.active { color: var(--accent); border-bottom-color: var(--accent); }

/* ---------- album strip ---------- */
.album-strip {
  display: grid;
  grid-auto-flow: column;
  grid-auto-columns: minmax(150px, 1fr);
  gap: var(--s-3);
  overflow-x: auto;
  padding-bottom: var(--s-3);
  scrollbar-width: thin;
}
.album-strip figure img { width: 100%; aspect-ratio: 1; object-fit: cover; }
.album-strip figcaption {
  margin-top: 0.55rem;
  font-family: var(--mono);
  font-size: 0.7rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--label);
}

/* ---------- wiki list rows ---------- */
.list-row {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: var(--s-3);
  align-items: baseline;
  padding-block: var(--s-2);
  border-bottom: 1px solid var(--rule-soft);
}
.list-row:first-of-type { border-top: 1px solid var(--rule); }
.list-row h3 a { color: var(--heading); }
.list-row p { color: var(--text-soft); font-size: 0.95rem; max-width: 62ch; }
.list-row .mono { color: var(--label); white-space: nowrap; }

/* ---------- pull quote ---------- */
.pull-quote {
  background: var(--bg-alt);
  padding-block: var(--s-6);
}
.pull-quote blockquote {
  font-size: clamp(1.6rem, 3.4vw, 2.6rem);
  font-weight: 500;
  letter-spacing: -0.015em;
  line-height: 1.25;
  color: var(--rust);
  max-width: 24ch;
  text-transform: lowercase;
}
.pull-quote figcaption { margin-top: var(--s-3); }

/* ---------- art grid ---------- */
.art-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--s-4) var(--s-3);
}
.art-grid figure { cursor: pointer; }
.art-grid img { width: 100%; aspect-ratio: 1; object-fit: cover; }
.art-grid figcaption {
  margin-top: 0.7rem;
  display: flex;
  justify-content: space-between;
  align-items: baseline;
}
/* archive tiles — wide collage crops, shown wider and shorter */
.archive-grid { grid-template-columns: repeat(2, 1fr); gap: var(--s-3); }
.archive-grid img { aspect-ratio: 16 / 7; }
@media (max-width: 720px) {
  .archive-grid { grid-template-columns: 1fr; }
}
.art-grid .artist {
  font-size: var(--t-label);
  font-weight: 500;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--text);
}
.art-grid .mono { color: var(--label); font-size: 0.68rem; }

/* ---------- lightbox ---------- */
.lightbox {
  position: fixed;
  inset: 0;
  z-index: 9500;
  background: rgba(31, 35, 43, 0.92);
  display: none;
  align-items: center;
  justify-content: center;
  padding: var(--gutter);
}
.lightbox.open { display: flex; animation: fade 0.35s ease-out both; }
.lightbox figure { max-width: min(880px, 92vw); }
.lightbox img { max-height: 78vh; width: auto; max-width: 100%; margin-inline: auto; }
.lightbox figcaption {
  margin-top: var(--s-2);
  text-align: center;
  color: var(--bone);
  font-family: var(--mono);
  font-size: 0.75rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
}
.lightbox-close {
  position: absolute;
  top: 1.4rem;
  right: 1.6rem;
  color: var(--bone);
  font-size: var(--t-label);
  letter-spacing: 0.18em;
  text-transform: uppercase;
  border-bottom: 1px solid transparent;
}
.lightbox-close:hover { border-bottom-color: var(--bone); }

/* ---------- article ---------- */
.article-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr) 240px;
  gap: var(--s-5);
  align-items: start;
}
.article-body { max-width: 68ch; line-height: 1.7; }
.article-body p + p { margin-top: 1.3em; }
.article-body h2 { margin-top: var(--s-5); margin-bottom: var(--s-2); font-size: 1.5rem; }
.article-sidebar { border-top: 1px solid var(--rule); padding-top: var(--s-2); }
.article-sidebar .label { display: block; margin-bottom: var(--s-2); }
.article-sidebar li { padding-block: 0.45rem; border-bottom: 1px solid var(--rule-soft); }
.article-sidebar a { color: var(--text-soft); font-size: 0.92rem; }
.article-sidebar a:hover { color: var(--accent); }

/* needs verification banner — dune, not red */
.notice {
  background: rgba(210, 163, 103, 0.28);
  border-left: 2px solid var(--dune);
  color: var(--ink);
  padding: var(--s-2) var(--s-3);
  margin-block: var(--s-3);
  font-size: 0.95rem;
}
.notice .label { color: var(--rust); display: block; margin-bottom: 0.3rem; }

/* alphabet index */
.alpha-index {
  display: flex;
  flex-wrap: wrap;
  gap: 0.15rem;
  margin-bottom: var(--s-4);
}
.alpha-index a {
  font-family: var(--mono);
  font-size: 0.8rem;
  color: var(--text-soft);
  width: 2rem;
  height: 2rem;
  display: grid;
  place-items: center;
  border: 1px solid var(--rule-soft);
}
.alpha-index a:hover { color: var(--accent); border-color: var(--accent); text-decoration: none; }

/* search */
.search-line {
  display: flex;
  align-items: baseline;
  gap: var(--s-2);
  border-bottom: 1px solid var(--rule);
  padding-bottom: 0.6rem;
  margin-bottom: var(--s-5);
  max-width: 520px;
}
.search-line input {
  flex: 1;
  background: none;
  border: 0;
  font: inherit;
  color: var(--text);
  outline: none;
}
.search-line input::placeholder { color: var(--label); }

/* ---------- fans ---------- */
.fan-quote {
  padding-block: var(--s-4);
  border-bottom: 1px solid var(--rule-soft);
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: var(--s-3);
  align-items: end;
}
.fan-quote:first-of-type { border-top: 1px solid var(--rule); }
.fan-quote blockquote {
  font-size: clamp(1.3rem, 2.6vw, 2rem);
  font-weight: 500;
  letter-spacing: -0.015em;
  line-height: 1.3;
  color: var(--rust);
  text-transform: lowercase;
  max-width: 30ch;
}
.phone-line {
  font-size: clamp(2rem, 6vw, 4.2rem);
  font-weight: 600;
  letter-spacing: -0.02em;
  color: var(--heading);
  line-height: 1;
}
.phone-line a { color: inherit; }
.form-placeholder {
  border: 1px dashed var(--rule);
  min-height: 320px;
  display: grid;
  place-items: center;
  text-align: center;
  padding: var(--s-4);
  color: var(--label);
}

/* ---------- footer ---------- */
.site-footer {
  background: var(--teal);
  color: var(--bone);
  padding-block: var(--s-5) var(--s-4);
}
.site-footer .label { color: var(--dune); }
.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr;
  gap: var(--s-4);
  padding-bottom: var(--s-4);
  border-bottom: 1px solid rgba(222, 205, 158, 0.2);
}
.site-footer a { color: var(--bone); }
.site-footer a:hover { color: var(--peach); text-decoration: none; }
.footer-wordmark {
  font-size: 1.6rem;
  font-weight: 600;
  letter-spacing: -0.02em;
  text-transform: lowercase;
  color: var(--bone);
  display: block;
  margin-bottom: var(--s-2);
}
.footer-disclaimer { font-size: 0.85rem; line-height: 1.7; color: rgba(222, 205, 158, 0.75); max-width: 46ch; }
.footer-col .label { display: block; margin-bottom: var(--s-2); }
.footer-col li { padding-block: 0.3rem; font-size: 0.92rem; }
.social-row { display: flex; gap: 1.2rem; margin-top: var(--s-2); }
.social-row a { display: block; color: var(--bone); }
.social-row a:hover { color: var(--peach); }
.social-row svg { width: 18px; height: 18px; }
.footer-bottom {
  display: flex;
  justify-content: space-between;
  gap: var(--s-3);
  flex-wrap: wrap;
  padding-top: var(--s-3);
  font-family: var(--mono);
  font-size: 0.7rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: rgba(222, 205, 158, 0.55);
}

/* ---------- geometric marks ---------- */
.mark-row { display: flex; align-items: center; gap: var(--s-3); }
.mark-row hr { flex: 1; }
.sun-mark {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: var(--accent);
  flex: none;
}

/* two-column media+text */
.split {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--s-5);
  align-items: center;
}
.split img { width: 100%; }

/* ---------- responsive ---------- */
@media (max-width: 900px) {
  .article-layout { grid-template-columns: 1fr; }
  .article-sidebar { order: 2; }
  .art-grid { grid-template-columns: repeat(2, 1fr); }
  .footer-grid { grid-template-columns: 1fr; }
  .split { grid-template-columns: 1fr; }
}
@media (max-width: 720px) {
  section { padding-block: var(--s-5); }
  .main-nav {
    display: none;
    position: absolute;
    top: 72px;
    left: 0;
    right: 0;
    background: var(--bg);
    border-bottom: 1px solid var(--rule);
    flex-direction: column;
    gap: 0;
    padding: var(--s-2) var(--gutter) var(--s-3);
  }
  .main-nav.open { display: flex; }
  .main-nav a { padding-block: 0.8rem; border-bottom: 1px solid var(--rule-soft); }
  .nav-toggle {
    display: block;
    font-size: var(--t-label);
    font-weight: 500;
    letter-spacing: 0.18em;
    text-transform: uppercase;
    color: var(--text);
  }
  .track-row { grid-template-columns: 48px 1fr auto; }
  .track-thumb { width: 48px; height: 48px; }
  .track-dur { display: none; }
  .fan-quote { grid-template-columns: 1fr; }
  .art-grid { grid-template-columns: 1fr; }
  .hero { min-height: 62vh; }
}

@media (prefers-reduced-motion: reduce) {
  .hero img { animation: none; }
  .fade-in, .fade-in-d1, .fade-in-d2 { animation-duration: 0.01s; animation-delay: 0s; }
}