/* ── Fonts (self-hosted, no runtime CDN dependency) ───────────────────── */
/* One family throughout, on purpose: this world reads everything — the
   hero, the headings, the body — as one continuous terminal/changelog
   register, not display type borrowed to dress up a system that never
   otherwise speaks in monospace. */

@font-face {
  font-family: "IBM Plex Mono";
  font-style: normal;
  font-weight: 400;
  font-display: swap;
  src: url("fonts/ibm-plex-mono-400.woff2") format("woff2");
}

@font-face {
  font-family: "IBM Plex Mono";
  font-style: normal;
  font-weight: 500;
  font-display: swap;
  src: url("fonts/ibm-plex-mono-500.woff2") format("woff2");
}

@font-face {
  font-family: "IBM Plex Mono";
  font-style: normal;
  font-weight: 600;
  font-display: swap;
  src: url("fonts/ibm-plex-mono-600.woff2") format("woff2");
}

@font-face {
  font-family: "IBM Plex Mono";
  font-style: normal;
  font-weight: 700;
  font-display: swap;
  src: url("fonts/ibm-plex-mono-700.woff2") format("woff2");
}

/* ── Tokens ────────────────────────────────────────────────────────────── */

:root {
  --bg: #15171c;
  --bg-raised: #1c1f26;
  --bg-raised-2: #22262f;
  --hairline: #2c313b;
  --ink: #e9e7e2;
  --ink-dim: #97a19c;
  --ink-faint: #6f767e;
  --accent: #46d17a;
  --accent-strong: #6be89a;
  --accent-wash: rgba(70, 209, 122, 0.1);
  --accent-wash-strong: rgba(70, 209, 122, 0.22);
  --font-display: "IBM Plex Mono", ui-monospace, "SFMono-Regular", Menlo, Consolas, monospace;
  --font-mono: "IBM Plex Mono", ui-monospace, "SFMono-Regular", Menlo, Consolas, monospace;
  --measure: 68ch;
  --ease-out-expo: cubic-bezier(0.16, 1, 0.3, 1);
}

/* ── Reset + browser surfaces ──────────────────────────────────────────── */

*, *::before, *::after { box-sizing: border-box; }

html {
  scroll-behavior: smooth;
  scrollbar-color: var(--ink-faint) var(--bg);
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: var(--font-display);
  font-size: 16px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

::selection {
  background: var(--accent);
  color: #0b1210;
}

::-webkit-scrollbar { width: 12px; height: 12px; }
::-webkit-scrollbar-track { background: var(--bg); }
::-webkit-scrollbar-thumb {
  background: var(--ink-faint);
  border-radius: 999px;
  border: 3px solid var(--bg);
}
::-webkit-scrollbar-thumb:hover { background: var(--ink-dim); }

a { color: inherit; }

:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 3px;
  border-radius: 2px;
}

.skip-link {
  position: absolute;
  left: -999px;
  top: 0;
  background: var(--accent);
  color: #0b1210;
  padding: 0.75rem 1.25rem;
  font-family: var(--font-mono);
  font-weight: 600;
  z-index: 100;
}
.skip-link:focus {
  left: 1rem;
  top: 1rem;
}

/* ── Topbar ────────────────────────────────────────────────────────────── */

.topbar {
  position: sticky;
  top: 0;
  z-index: 20;
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  row-gap: 0.6rem;
  padding: 1.1rem clamp(1.25rem, 4vw, 3rem);
  background: rgba(21, 23, 28, 0.86);
  backdrop-filter: blur(10px) saturate(140%);
  border-bottom: 1px solid var(--hairline);
}

.mark {
  display: flex;
  align-items: baseline;
  gap: 0.5rem;
  text-decoration: none;
  font-family: var(--font-mono);
  font-weight: 600;
  letter-spacing: -0.01em;
  color: var(--ink);
}
.mark-glyph { color: var(--accent); }
.mark-sep { color: var(--ink-dim); margin: 0 0.05em; }

.topnav {
  display: flex;
  gap: clamp(1rem, 3vw, 2rem);
  font-family: var(--font-mono);
  font-size: 0.85rem;
}
.topnav a {
  position: relative;
  text-decoration: none;
  color: var(--ink-dim);
  padding-bottom: 0.2rem;
}
.topnav a::after {
  content: "";
  position: absolute;
  left: 0;
  right: 100%;
  bottom: 0;
  height: 1px;
  background: var(--accent);
  transition: right 0.3s var(--ease-out-expo);
}
.topnav a:hover,
.topnav a:focus-visible {
  color: var(--ink);
}
.topnav a:hover::after,
.topnav a:focus-visible::after {
  right: 0;
}

/* ── Hero ──────────────────────────────────────────────────────────────── */

.hero {
  padding: clamp(3.5rem, 10vw, 7rem) clamp(1.25rem, 4vw, 3rem) clamp(2.5rem, 6vw, 4rem);
  max-width: 920px;
}

.hero-date {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  color: var(--ink-dim);
  font-variant-numeric: tabular-nums;
  margin: 0 0 1.5rem;
}
.hero-date time { color: var(--ink-dim); }

.hero-title {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: clamp(2.4rem, 6vw, 4.25rem);
  line-height: 1.05;
  letter-spacing: -0.04em;
  margin: 0 0 1.5rem;
  color: var(--ink);
}
.hero-title .prompt {
  color: var(--accent);
  font-family: var(--font-mono);
  margin-right: 0.35em;
}
.hero-title-accent { color: var(--ink-dim); font-weight: 500; }

.hero-lede {
  max-width: var(--measure);
  font-size: 1.15rem;
  color: var(--ink-dim);
  margin: 0 0 2.25rem;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
}

/* ── Buttons ───────────────────────────────────────────────────────────── */

.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5em;
  font-family: var(--font-mono);
  font-size: 0.9rem;
  font-weight: 500;
  text-decoration: none;
  padding: 0.85rem 1.4rem;
  border-radius: 6px;
  border: 1px solid transparent;
  transition: transform 0.2s var(--ease-out-expo), background 0.2s, border-color 0.2s;
}
.btn:active { transform: translateY(1px); }

.btn-primary {
  background: var(--accent);
  color: #0b1210;
  box-shadow: 0 8px 20px -8px rgba(70, 209, 122, 0.55);
}
.btn-primary:hover { background: var(--accent-strong); }

.btn-ghost {
  background: transparent;
  color: var(--ink-dim);
  border-color: var(--hairline);
}
.btn-ghost:hover {
  color: var(--ink);
  border-color: var(--ink-faint);
}

.btn-small { padding: 0.6rem 1.1rem; font-size: 0.82rem; }

/* ── Filter bar ────────────────────────────────────────────────────────── */

.filterbar {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 0.6rem;
  padding: 0 clamp(1.25rem, 4vw, 3rem) 2rem;
  font-family: var(--font-mono);
  font-size: 0.82rem;
}
.filterbar-label { color: var(--ink-dim); margin-right: 0.25rem; }

.chip {
  font-family: var(--font-mono);
  font-size: 0.82rem;
  color: var(--ink-dim);
  background: var(--bg-raised);
  border: 1px solid var(--hairline);
  border-radius: 4px;
  padding: 0.4rem 0.75rem;
  cursor: pointer;
  transition: background 0.15s, border-color 0.15s, color 0.15s;
}
.chip:hover { border-color: var(--ink-faint); color: var(--ink); }
.chip.is-active {
  background: var(--accent-wash-strong);
  border-color: var(--accent);
  color: var(--accent-strong);
}

/* ── Log / timeline ────────────────────────────────────────────────────── */

.log {
  position: relative;
  max-width: 920px;
  margin: 0 auto;
  padding: 0 clamp(1.25rem, 4vw, 3rem) clamp(4rem, 8vw, 6rem);
}

.log-spine {
  position: absolute;
  left: clamp(1.25rem, 4vw, 3rem);
  top: 0.6rem;
  bottom: 3rem;
  width: 1px;
  background:
    repeating-linear-gradient(
      to bottom,
      var(--hairline) 0,
      var(--hairline) 4px,
      transparent 4px,
      transparent 9px
    );
}
.log-spine-fill {
  position: absolute;
  inset: 0 auto 0 0;
  width: 1px;
  height: 100%;
  background: var(--accent);
  box-shadow: 0 0 12px 0 var(--accent);
  transform: scaleY(0);
  transform-origin: top;
  transition: transform 0.15s linear;
}

.entry {
  position: relative;
  padding: clamp(2.25rem, 5vw, 3.25rem) 0 clamp(2.25rem, 5vw, 3.25rem) clamp(2.5rem, 6vw, 3.5rem);
  border-bottom: 1px solid var(--hairline);
}
.entry:last-of-type { border-bottom: none; }

/* Hidden state is opt-in (added by script.js only once it can also
   guarantee the reveal) so content already ships visible with no JS. */
.entry.reveal-armed:not(.is-visible) {
  opacity: 0;
  transform: translateY(18px);
}
.entry.reveal-armed {
  transition: opacity 0.7s var(--ease-out-expo), transform 0.7s var(--ease-out-expo);
}

.entry-marker {
  position: absolute;
  left: -5px;
  top: calc(clamp(2.25rem, 5vw, 3.25rem) + 0.35rem);
  width: 11px;
  height: 11px;
  background: var(--bg-raised-2);
  border: 1px solid var(--ink-faint);
  transform: rotate(45deg);
  box-shadow: 1px 2px 3px rgba(0, 0, 0, 0.4);
}
.entry-marker-release {
  background: var(--accent);
  border-color: var(--accent-strong);
  box-shadow: 0 0 0 4px var(--accent-wash), 1px 2px 4px rgba(0, 0, 0, 0.45);
}

.entry-head { margin-bottom: 1.25rem; }

/* The release tag lives INSIDE the heading line (GitHub-release style:
   "v1.0.0 · projecte real  Sentinel — ..."), never as a standalone label
   floating above it — a kicker/eyebrow is banned outright regardless of
   how well it cites the changelog register. */
.entry h2 {
  display: flex;
  align-items: baseline;
  flex-wrap: wrap;
  gap: 0.65rem;
  font-family: var(--font-display);
  font-weight: 600;
  font-size: clamp(1.4rem, 2.6vw, 1.9rem);
  letter-spacing: -0.015em;
  margin: 0;
  color: var(--ink);
}

.tag-inline {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 0.6em;
  font-weight: 500;
  letter-spacing: 0.02em;
  color: var(--ink-dim);
  background: var(--bg-raised);
  border: 1px solid var(--hairline);
  border-radius: 3px;
  padding: 0.3em 0.6em;
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.03), 0 1px 2px rgba(0, 0, 0, 0.3);
}
.tag-inline-release {
  color: var(--accent-strong);
  border-color: var(--accent);
  background: var(--accent-wash);
}

.entry-body { max-width: var(--measure); }
.entry-body p { color: var(--ink-dim); }
.entry-body p strong { color: var(--ink); font-weight: 600; }

.pending {
  color: var(--ink-dim);
  font-style: italic;
}

.diff {
  list-style: none;
  margin: 1.5rem 0;
  padding: 0;
  font-family: var(--font-mono);
  font-size: 0.9rem;
  background: var(--bg-raised);
  border: 1px solid var(--hairline);
  border-radius: 6px;
  overflow: hidden;
}
.diff li {
  padding: 0.6rem 1rem 0.6rem 2rem;
  position: relative;
  color: var(--ink-dim);
  border-bottom: 1px solid var(--hairline);
}
.diff li:last-child { border-bottom: none; }
.diff li.add::before {
  content: "+";
  position: absolute;
  left: 0.9rem;
  color: var(--accent);
  font-weight: 600;
}

.spec-block {
  margin: 1.75rem 0;
  border: 1px solid var(--hairline);
  border-radius: 6px;
  overflow: hidden;
  background: #101216;
}
.spec-block figcaption {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  color: var(--ink-dim);
  text-transform: lowercase;
  padding: 0.6rem 1rem;
  border-bottom: 1px solid var(--hairline);
  background: var(--bg-raised);
}
.spec-block pre {
  margin: 0;
  padding: 1.25rem 1rem;
  overflow-x: auto;
}
.spec-block code {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  line-height: 1.55;
  color: var(--ink-dim);
  white-space: pre;
}

.process-intro {
  font-family: var(--font-mono);
  font-size: 0.82rem;
  font-weight: 500;
  letter-spacing: 0.02em;
  text-transform: lowercase;
  color: var(--ink-dim);
  margin: 1.75rem 0 1rem;
}

.process {
  list-style: none;
  margin: 0 0 1.75rem;
  padding: 0;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
}

.process-step {
  padding: 0 1.5rem;
  border-right: 1px solid var(--hairline);
}
.process-step:first-child { padding-left: 0; }
.process-step:last-child { padding-right: 0; border-right: none; }

.process-step-number {
  display: block;
  font-family: var(--font-mono);
  font-weight: 700;
  font-size: clamp(1.6rem, 3.4vw, 2.1rem);
  letter-spacing: -0.03em;
  color: var(--ink-dim);
  font-variant-numeric: tabular-nums;
  margin-bottom: 0.6rem;
}
.process-step-title {
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 1.1rem;
  margin: 0 0 0.5rem;
  color: var(--ink);
}
.process-step-body {
  margin: 0;
  color: var(--ink-dim);
  font-size: 0.92rem;
  line-height: 1.55;
}

.specsheet {
  display: grid;
  grid-template-columns: minmax(auto, 9rem) 1fr;
  gap: 0.65rem 1.5rem;
  margin: 1.5rem 0 0;
  font-family: var(--font-mono);
  font-size: 0.85rem;
}
.specsheet > div { display: contents; }
.specsheet dt {
  color: var(--ink-dim);
  text-transform: lowercase;
}
.specsheet dd {
  margin: 0;
  color: var(--ink);
  font-variant-numeric: tabular-nums;
}

.resource-card {
  display: grid;
  grid-template-columns: minmax(0, 15rem) 1fr;
  gap: 1.75rem;
  align-items: center;
  margin: 1.5rem 0;
  padding: 1.5rem;
  background: var(--bg-raised);
  border: 1px solid var(--hairline);
  border-radius: 8px;
}
.resource-terminal {
  font-family: var(--font-mono);
  font-size: 0.9rem;
  color: var(--accent-strong);
  background: #101216;
  border: 1px solid var(--hairline);
  border-radius: 6px;
  padding: 1rem 1.1rem;
}
.resource-terminal .prompt { color: var(--ink-dim); margin-right: 0.5em; }
.resource-info h3 {
  font-family: var(--font-display);
  font-size: 1.1rem;
  margin: 0 0 0.5rem;
  color: var(--ink);
}
.resource-info p {
  margin: 0 0 1.1rem;
  color: var(--ink-dim);
  font-size: 0.95rem;
}

.more-soon {
  color: var(--ink-dim);
  font-size: 0.9rem;
}

.log-empty {
  font-family: var(--font-mono);
  font-size: 0.85rem;
  color: var(--ink-dim);
  padding: 3rem 0;
  text-align: center;
}

/* ── Footer ────────────────────────────────────────────────────────────── */

.site-footer {
  border-top: 1px solid var(--hairline);
  padding: 2.5rem clamp(1.25rem, 4vw, 3rem) 3rem;
  font-family: var(--font-mono);
  font-size: 0.8rem;
  color: var(--ink-dim);
}
.site-footer p { margin: 0.35rem 0; }
.footer-note { color: var(--ink-dim); }

/* ── Responsive ────────────────────────────────────────────────────────── */

@media (max-width: 640px) {
  .topbar { justify-content: flex-start; }
  .topnav { gap: 1rem; width: 100%; }
  .resource-card { grid-template-columns: 1fr; }
  .specsheet { grid-template-columns: 1fr; }
  .specsheet dt { margin-top: 0.5rem; }
  .process { grid-template-columns: 1fr; gap: 1.5rem; }
  .process-step {
    padding: 0 0 1.5rem;
    border-right: none;
    border-bottom: 1px solid var(--hairline);
  }
  .process-step:last-child { padding-bottom: 0; border-bottom: none; }
  .log-spine, .entry-marker { display: none; }
  .entry { padding-left: 0; }
}