/* Hallmark · macrostructure: Index-First · tone: technical / utilitarian · anchor hue: cobalt 256
 * theme: Cobalt · genre: modern-minimal · nav: flush bordered bar · footer: single-line meta
 * pre-emit critique: P4 H4 E4 S4 R5 V4
 */

/* ---------- Tokens ---------- */
@font-face {
  font-family: "Space Grotesk";
  src: url("fonts/space-grotesk-latin-wght-normal.woff2") format("woff2");
  font-weight: 300 700;
  font-display: swap;
}
@font-face {
  font-family: "Inter";
  src: url("fonts/inter-latin-wght-normal.woff2") format("woff2");
  font-weight: 100 900;
  font-display: swap;
}
@font-face {
  font-family: "JetBrains Mono";
  src: url("fonts/jetbrains-mono-latin-wght-normal.woff2") format("woff2");
  font-weight: 100 800;
  font-display: swap;
}

:root {
  --color-paper: oklch(98.5% 0.004 250);
  --color-paper-2: oklch(96.5% 0.006 252);
  --color-ink: oklch(24% 0.02 258);
  --color-body: oklch(34% 0.018 257);
  --color-muted: oklch(50% 0.016 257);
  --color-rule: oklch(90% 0.008 255);
  --color-rule-strong: oklch(82% 0.01 255);
  --color-accent: oklch(58% 0.2 256);
  --color-accent-ink: oklch(48% 0.19 258);
  --color-accent-soft: oklch(94% 0.03 256);
  --color-on-accent: oklch(98.5% 0.004 250);
  --color-band: oklch(21% 0.016 260);
  --color-band-2: oklch(27% 0.018 260);
  --color-band-rule: oklch(36% 0.02 260);
  --color-band-ink: oklch(95% 0.008 255);
  --color-band-muted: oklch(74% 0.014 255);
  --color-band-accent: oklch(72% 0.15 256);
  --color-error: oklch(52% 0.18 28);
  --color-focus: oklch(58% 0.2 256);

  --font-display: "Space Grotesk", ui-sans-serif, system-ui, sans-serif;
  --font-body: "Inter", ui-sans-serif, system-ui, sans-serif;
  --font-mono: "JetBrains Mono", ui-monospace, "SFMono-Regular", monospace;

  --text-xs: 0.75rem;
  --text-sm: 0.875rem;
  --text-base: 1rem;
  --text-lg: 1.125rem;
  --text-xl: 1.375rem;
  --text-2xl: clamp(1.5rem, 1.2rem + 1.2vw, 2rem);
  --text-display: clamp(2.25rem, 1.6rem + 3vw, 3.75rem);

  --space-2xs: 0.25rem;
  --space-xs: 0.5rem;
  --space-sm: 0.75rem;
  --space-md: 1rem;
  --space-lg: 1.5rem;
  --space-xl: 2rem;
  --space-2xl: 3rem;
  --space-3xl: 4.5rem;
  --space-4xl: 6rem;

  --radius-sm: 6px;
  --radius-md: 10px;
  --rule-hair: 1px solid var(--color-rule);

  --ease-out: cubic-bezier(0.22, 1, 0.36, 1);
  --ease-in: cubic-bezier(0.55, 0, 1, 0.45);
  --ease-in-out: cubic-bezier(0.65, 0, 0.35, 1);
  --dur-fast: 120ms;
  --dur-base: 200ms;

  --measure: 64ch;
  --wrap: 68rem;
}

/* ---------- Base ---------- */
*, *::before, *::after { box-sizing: border-box; }
html, body { overflow-x: clip; }
html { -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  background: var(--color-paper);
  color: var(--color-body);
  font-family: var(--font-body);
  font-size: var(--text-base);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}
h1, h2, h3 {
  font-family: var(--font-display);
  color: var(--color-ink);
  font-style: normal;
  line-height: 1.1;
  letter-spacing: -0.02em;
  margin: 0;
  overflow-wrap: anywhere;
  min-width: 0;
}
p { margin: 0; }
a { color: var(--color-accent-ink); text-underline-offset: 0.2em; }
code, .mono { font-family: var(--font-mono); font-variant-ligatures: none; }
:focus-visible { outline: 2px solid var(--color-focus); outline-offset: 2px; }

.wrap { width: 100%; max-width: var(--wrap); margin-inline: auto; padding-inline: var(--space-md); }
@media (min-width: 48em) { .wrap { padding-inline: var(--space-xl); } }

.visually-hidden {
  position: absolute; width: 1px; height: 1px; margin: -1px; padding: 0;
  overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; border: 0;
}
.skip {
  position: absolute; left: var(--space-md); top: -3rem; z-index: 10;
  background: var(--color-ink); color: var(--color-paper);
  padding: var(--space-xs) var(--space-md); border-radius: var(--radius-sm);
}
.skip:focus { top: var(--space-md); }

/* ---------- Top bar ---------- */
.top { border-bottom: var(--rule-hair); }
.top__inner {
  display: flex; align-items: center; justify-content: space-between;
  gap: var(--space-md); min-height: 3.5rem;
}
.wordmark {
  font-family: var(--font-display); font-weight: 600; color: var(--color-ink);
  letter-spacing: -0.01em; white-space: nowrap; overflow: hidden; text-overflow: ellipsis;
}
.top__meta {
  font-size: var(--text-xs); text-transform: uppercase; letter-spacing: 0.06em;
  color: var(--color-muted); white-space: nowrap;
}

/* ---------- Intro ---------- */
.intro { padding-block: var(--space-3xl) var(--space-2xl); }
.intro h1 { font-size: var(--text-display); font-weight: 600; max-width: 18ch; }
.intro__lede {
  margin-top: var(--space-lg); font-size: var(--text-lg);
  max-width: var(--measure); color: var(--color-body);
}

/* ---------- Add band (the page's one dark beat) ---------- */
.add { background: var(--color-band); color: var(--color-band-muted); padding-block: var(--space-2xl); }
.add h2 { color: var(--color-band-ink); font-size: var(--text-xl); font-weight: 600; margin-bottom: var(--space-sm); }
.add p { max-width: 44ch; }
.add em { color: var(--color-band-ink); font-style: normal; font-family: var(--font-mono); font-size: 0.9em; }
.add__grid { display: grid; gap: var(--space-xl); }
@media (min-width: 52em) {
  .add__grid { grid-template-columns: minmax(0, 5fr) minmax(0, 7fr); align-items: center; }
}
.add__actions { display: grid; gap: var(--space-sm); min-width: 0; }
.add__actions > .btn--primary { justify-self: start; }
.urlbox {
  display: flex; align-items: stretch; min-width: 0;
  border: 1px solid var(--color-band-rule); border-radius: var(--radius-sm);
  background: var(--color-band-2);
}
.urlbox__url {
  flex: 1 1 auto; min-width: 0; padding: var(--space-sm) var(--space-md);
  font-size: var(--text-sm); color: var(--color-band-ink);
  white-space: nowrap; overflow-x: auto; scrollbar-width: thin;
}
.urlbox .btn { border: 0; border-left: 1px solid var(--color-band-rule); border-radius: 0 var(--radius-sm) var(--radius-sm) 0; }
.add__hint { font-size: var(--text-xs); min-height: 1.2em; color: var(--color-band-accent); letter-spacing: 0.04em; }

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: var(--space-xs);
  min-height: 2.75rem; padding: 0 var(--space-lg);
  font: 500 var(--text-sm) / 1 var(--font-body); white-space: nowrap; text-decoration: none;
  border-radius: var(--radius-sm); border: 1px solid transparent; cursor: pointer;
  transition: background-color var(--dur-fast) var(--ease-out), color var(--dur-fast) var(--ease-out),
              transform var(--dur-fast) var(--ease-out);
}
.btn:active { transform: translateY(1px); }
.btn[aria-disabled="true"], .btn:disabled { opacity: 0.5; cursor: not-allowed; transform: none; }
.btn--primary { background: var(--color-accent); color: var(--color-on-accent); }
.btn--primary:hover { background: var(--color-accent-ink); }
.btn--ghost { background: transparent; color: var(--color-band-ink); }
.btn--ghost:hover { background: var(--color-band-rule); }
.btn--ghost[data-state="success"] { color: var(--color-band-accent); }
.add .btn:focus-visible { outline-color: var(--color-band-accent); }

/* ---------- Package list ---------- */
.list { padding-block: var(--space-3xl); }
.list__head {
  display: flex; flex-wrap: wrap; align-items: end; justify-content: space-between;
  gap: var(--space-md); padding-bottom: var(--space-md); border-bottom: 1px solid var(--color-rule-strong);
}
.list__head h2 { font-size: var(--text-2xl); font-weight: 600; }
.filter input {
  width: min(18rem, 100%); min-height: 2.5rem; padding: 0 var(--space-sm);
  font: var(--text-sm) var(--font-mono); color: var(--color-ink);
  background: var(--color-paper); border: 1px solid var(--color-rule-strong); border-radius: var(--radius-sm);
  transition: border-color var(--dur-fast) var(--ease-out);
}
.filter input:hover { border-color: var(--color-muted); }
.filter input:focus-visible { border-color: var(--color-accent); outline-offset: 0; }
.filter input:disabled { opacity: 0.5; }
.filter { flex: 0 1 18rem; }

.state { padding-block: var(--space-xl); color: var(--color-muted); }
.state:empty { display: none; }
.state[data-kind="error"] { color: var(--color-error); }

.packages { list-style: none; margin: 0; padding: 0; }
.pkg {
  display: grid; gap: var(--space-sm) var(--space-xl);
  grid-template-columns: minmax(0, 1fr);
  padding-block: var(--space-lg); border-bottom: var(--rule-hair);
}
@media (min-width: 44em) {
  .pkg { grid-template-columns: minmax(0, 1fr) auto; }
  .pkg__older { grid-column: 1 / -1; }
}
.pkg__title { font-size: var(--text-xl); font-weight: 600; }
.pkg__id { font-size: var(--text-xs); color: var(--color-muted); margin-top: var(--space-2xs); overflow-wrap: anywhere; }
.pkg__desc { margin-top: var(--space-sm); max-width: var(--measure); }
.pkg__desc:empty { display: none; }
.pkg__facts {
  display: flex; flex-wrap: wrap; gap: var(--space-2xs) var(--space-lg);
  margin: var(--space-sm) 0 0; font-size: var(--text-xs); color: var(--color-muted);
}
.pkg__facts div { display: flex; gap: var(--space-xs); min-width: 0; }
.pkg__facts dt { text-transform: uppercase; letter-spacing: 0.06em; }
.pkg__facts dd { margin: 0; color: var(--color-body); overflow-wrap: anywhere; }

.pkg__side { display: flex; align-items: center; gap: var(--space-md); align-self: start; }
@media (min-width: 44em) { .pkg__side { flex-direction: column; align-items: end; } }
.chip {
  font-size: var(--text-xs); letter-spacing: 0.04em; color: var(--color-accent-ink);
  background: var(--color-accent-soft); padding: var(--space-2xs) var(--space-xs); border-radius: 4px;
  white-space: nowrap;
}
.pkg__download { font-size: var(--text-sm); font-weight: 500; white-space: nowrap; text-decoration: none; }
.pkg__download:hover { text-decoration: underline; }

.pkg__older summary {
  cursor: pointer; width: fit-content; font-size: var(--text-xs);
  color: var(--color-muted); letter-spacing: 0.04em;
}
.pkg__older summary:hover { color: var(--color-ink); }
.pkg__older ul {
  list-style: none; margin: var(--space-sm) 0 0; padding: 0;
  display: flex; flex-wrap: wrap; gap: var(--space-xs) var(--space-lg);
  font: var(--text-sm) var(--font-mono);
}
.pkg[hidden] { display: none; }

/* ---------- Footer ---------- */
.foot {
  display: flex; flex-wrap: wrap; justify-content: space-between; gap: var(--space-md);
  padding-block: var(--space-xl) var(--space-2xl);
  font-size: var(--text-xs); color: var(--color-muted); letter-spacing: 0.04em;
}
.foot a { color: var(--color-muted); white-space: nowrap; }
.foot a:hover { color: var(--color-accent-ink); }

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { transition-duration: 1ms !important; }
}