@import url("https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600;700;800&family=Fira+Code:wght@400;500;600;700&display=swap");

:root {
  --bg: #0d1117;
  --bg-elev: #161b22;
  --bg-elev-2: #1c2128;
  --border: #30363d;
  --text: #c9d1d9;
  --text-bright: #f0f6fc;
  --muted: #8b949e;
  --green: #34d399;
  --blue: #60a5fa;
  --purple: #a78bfa;
  --pink: #f472b6;
  --red: #f87171;
  --yellow: #fbbf24;
  --ubuntu: #e95420;
  --debian: #a80030;
  --slackware: #4b8bbe;
  --mint: #87cf3e;
  --arch: #1793d1;
  --nixos: #5277c3;
  --freebsd: #ab2b28;
  --mono: "Fira Code", "FiraCode Nerd Font", "Courier New", ui-monospace, monospace;
  --sans: "Inter", "Segoe UI", system-ui, sans-serif;
}

.reveal-viewport,
.reveal,
.reveal .slides,
.reveal .slides section {
  background: var(--bg);
}

.reveal {
  font-family: var(--sans);
  color: var(--text);
  font-size: 26px;
  font-weight: 400;
  font-variant-ligatures: none;
  font-feature-settings: "liga" 0, "calt" 0;
}

.reveal .slides {
  text-align: left;
}

.reveal .slides section {
  padding: 28px 44px 52px;
  height: 100%;
  box-sizing: border-box;
}

.reveal .slide-content,
.reveal .openblock,
.reveal .openblock > .content,
.reveal .sidebarblock,
.reveal .sidebarblock > .content,
.reveal .exampleblock {
  width: 100%;
  box-sizing: border-box;
}

.reveal .slides section.stack {
  padding: 0;
}

.reveal h1,
.reveal h2,
.reveal h3,
.reveal h4 {
  font-family: var(--sans);
  text-transform: none;
  letter-spacing: -0.03em;
  color: var(--text-bright);
  font-weight: 700;
  text-shadow: none;
}

.reveal h2,
.slide-title {
  font-size: 1.55em;
  margin: 0 0 0.15em;
  line-height: 1.15;
  font-weight: 700;
  letter-spacing: -0.03em;
  color: var(--text-bright);
  display: block;
}

.tagline {
  display: block;
  font-size: 0.85em;
  color: var(--muted);
  font-style: italic;
  margin: 0.2em 0 0.4em;
}

.reveal h3 {
  font-size: 0.95em;
  margin: 0 0 0.35em;
  font-weight: 650;
}

.reveal p {
  margin: 0.3em 0;
  line-height: 1.35;
}

.reveal strong {
  color: var(--text-bright);
  font-weight: 650;
}

.reveal em {
  font-style: italic;
  color: var(--text);
}

.reveal a {
  color: var(--blue);
}

.reveal code,
.reveal kbd,
.reveal pre,
.reveal .cmd,
.reveal .mono {
  font-family: var(--mono);
}

.reveal pre {
  width: 100%;
  margin: 0;
  box-shadow: none;
  font-size: 0.62em;
  line-height: 1.45;
}

.reveal pre code {
  background: transparent;
  color: var(--text);
  max-height: none;
  padding: 0;
}

.reveal .progress {
  height: 3px;
  color: var(--green);
}

.reveal .progress span {
  background: var(--green);
}

.reveal .slide-number {
  background: transparent;
  color: var(--muted);
  font-family: var(--mono);
  font-size: 13px;
  right: 18px;
  bottom: 10px;
}

.reveal .controls {
  color: var(--green);
}

.reveal .exampleblock > .content,
.reveal .sidebarblock,
.reveal .openblock > .content,
.reveal .literalblock > .content,
.reveal .listingblock > .content {
  background: transparent;
  border: 0;
  box-shadow: none;
  padding: 0;
  margin: 0;
}

.reveal table,
.reveal table.stats-table {
  width: 100%;
  border: 0;
  margin: 0;
  background: transparent;
}

.kv {
  background: var(--bg-elev);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 0.15em 0.9em;
}

.kv-row {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  gap: 1em;
  padding: 0.48em 0;
  border-bottom: 1px solid var(--border);
  font-family: var(--mono);
  font-size: 0.62em;
}

.kv-row:last-child {
  border-bottom: 0;
}

.kv-row span:last-child {
  color: var(--text-bright);
  font-weight: 650;
  text-align: right;
  white-space: nowrap;
}

.reveal .sidebarblock {
  width: 100%;
}

.reveal .paragraph,
.reveal .openblock,
.reveal .exampleblock,
.reveal .sidebarblock,
.reveal .listingblock,
.reveal .quoteblock {
  margin: 0;
}

.reveal .quoteblock {
  box-shadow: none;
  width: 100%;
}

.reveal .quoteblock blockquote {
  margin: 0;
  padding: 0;
}

.reveal ul,
.reveal ol {
  display: block;
  margin: 0.2em 0 0.2em 1.1em;
}

.reveal li {
  margin: 0.2em 0;
}

/* ----- primitives ----- */

.kicker {
  display: block;
  font-family: var(--mono);
  font-size: 0.52em;
  font-weight: 500;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--green);
  margin-bottom: 0.15em;
}

.kicker.warn { color: var(--yellow); }
.kicker.danger { color: var(--red); }
.kicker.pink { color: var(--pink); }
.kicker.blue { color: var(--blue); }
.kicker.purple { color: var(--purple); }
.kicker.muted { color: var(--muted); }

.meta {
  color: var(--muted);
  font-size: 0.62em;
  font-family: var(--mono);
  margin-bottom: 0.6em;
}

.lede {
  display: block;
  font-size: 0.88em;
  font-style: italic;
  color: var(--text);
  border-left: 3px solid var(--green);
  padding: 0.15em 0 0.15em 0.85em;
  margin: 0.35em 0 0.7em;
  line-height: 1.35;
}

.lede.ubuntu { border-color: var(--ubuntu); }
.lede.debian { border-color: #d70a53; }
.lede.slackware { border-color: var(--yellow); }
.lede.mint { border-color: var(--mint); }
.lede.arch { border-color: var(--arch); }
.lede.nixos { border-color: var(--blue); }
.lede.freebsd { border-color: var(--red); }
.lede.pink { border-color: var(--pink); }

.footnote,
.source {
  font-size: 0.48em;
  color: var(--muted);
  font-family: var(--mono);
  margin-top: 0.8em;
}

.reveal a.yt {
  display: inline-flex;
  align-items: center;
  gap: 0.45em;
  margin-top: 0.55em;
  padding: 0.28em 0.75em;
  font-family: var(--mono);
  font-size: 0.5em;
  font-weight: 500;
  letter-spacing: 0.02em;
  color: #fecaca;
  text-decoration: none;
  background: #f8717114;
  border: 1px solid #f8717144;
  border-radius: 999px;
  pointer-events: auto;
  position: relative;
  z-index: 5;
}

.reveal a.yt:hover {
  color: #fff;
  border-color: #f8717188;
  background: #f8717128;
}

.reveal a.yt-card {
  display: block;
  text-decoration: none;
  color: inherit;
  pointer-events: auto;
  position: relative;
  z-index: 5;
}

.reveal a.yt-card:hover {
  border-color: #a78bfa88;
}

.reveal a.yt-card h3 {
  color: var(--blue);
}

.cmd {
  font-family: var(--mono);
  font-size: 0.58em;
  color: var(--green);
  background: #0d1117;
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 0.35em 0.6em;
  display: inline-block;
  margin-top: 0.45em;
}

.verdict {
  margin-top: 0.7em;
  padding: 0.55em 0.8em;
  background: var(--bg-elev);
  border: 1px solid var(--border);
  border-left: 3px solid var(--green);
  border-radius: 8px;
  font-size: 0.72em;
  color: var(--text);
  line-height: 1.4;
}

.verdict .kicker {
  margin-bottom: 0.2em;
}

.pills {
  display: flex;
  flex-wrap: wrap;
  gap: 0.45em;
  margin: 0.9em 0 0.4em;
}

.pill {
  display: inline-block;
  padding: 0.22em 0.75em;
  border-radius: 999px;
  font-size: 0.52em;
  font-weight: 650;
  letter-spacing: 0.02em;
  border: 1px solid transparent;
}

.pill.ubuntu { color: #ff9b7a; background: #e9542022; border-color: #e9542055; }
.pill.debian { color: #ff8aa8; background: #a8003022; border-color: #a8003055; }
.pill.slackware { color: #9ecbff; background: #4b8bbe22; border-color: #4b8bbe55; }
.pill.mint { color: #b6f07a; background: #87cf3e22; border-color: #87cf3e55; }
.pill.arch { color: #7ec8ea; background: #1793d122; border-color: #1793d155; }
.pill.nixos { color: #a78bfa; background: #5277c322; border-color: #5277c355; }

.split,
.openblock.split > .content {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1em;
  align-items: stretch;
  width: 100%;
}

.openblock.split {
  display: block;
}

.split.uneven,
.openblock.split.uneven > .content {
  grid-template-columns: 1.15fr 0.85fr;
}

.split.uneven-rev,
.openblock.split.uneven-rev > .content {
  grid-template-columns: 0.9fr 1.1fr;
}

.columns-3 {
  display: grid;
  grid-template-columns: 1fr 1fr 1fr;
  gap: 0.8em;
}

.card-grid {
  display: grid;
  gap: 0.65em;
  width: 100%;
}

.card-grid.cols-2 { grid-template-columns: 1fr 1fr; }
.card-grid.cols-3 { grid-template-columns: 1fr 1fr 1fr; }
.card-grid.cols-4 { grid-template-columns: 1fr 1fr 1fr 1fr; }
.card-grid.cols-5 { grid-template-columns: repeat(5, 1fr); }
.card-grid.cols-6 { grid-template-columns: repeat(6, 1fr); }

.openblock.card-grid {
  display: block;
}

.openblock.card-grid > .content {
  display: grid;
  gap: 0.65em;
  width: 100%;
}

.openblock.card-grid.cols-2 > .content { grid-template-columns: 1fr 1fr; }
.openblock.card-grid.cols-3 > .content { grid-template-columns: 1fr 1fr 1fr; }
.openblock.card-grid.cols-4 > .content { grid-template-columns: 1fr 1fr 1fr 1fr; }
.openblock.card-grid.cols-5 > .content { grid-template-columns: repeat(5, 1fr); }
.openblock.card-grid.cols-6 > .content { grid-template-columns: repeat(6, 1fr); }

.card {
  background: var(--bg-elev);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 0.65em 0.8em;
  min-width: 0;
}

.card.tight { padding: 0.6em 0.7em; }
.card.accent-green { border-top: 3px solid var(--green); }
.card.accent-red { border-top: 3px solid var(--red); }
.card.accent-blue { border-top: 3px solid var(--blue); }
.card.accent-purple { border-top: 3px solid var(--purple); }
.card.accent-yellow { border-top: 3px solid var(--yellow); }
.card.accent-pink { border-top: 3px solid var(--pink); }
.card.accent-ubuntu { border-top: 3px solid var(--ubuntu); }

.card h3 {
  font-size: 0.78em;
  margin: 0.15em 0 0.3em;
}

.card p {
  font-size: 0.62em;
  color: var(--muted);
  line-height: 1.4;
  margin: 0;
}

.card .quote {
  font-size: 0.62em;
  font-style: italic;
  color: var(--text);
  margin: 0.2em 0 0.4em;
  line-height: 1.35;
}

.stat {
  text-align: left;
}

.stat .num {
  display: block;
  font-size: 1.15em;
  font-weight: 750;
  color: var(--text-bright);
  letter-spacing: -0.03em;
  line-height: 1.1;
}

.stat .num.green { color: var(--green); }
.stat .num.yellow { color: var(--yellow); }
.stat .num.red { color: var(--red); }
.stat .num.blue { color: var(--blue); }
.stat .num.purple { color: var(--purple); }

.stat .label {
  display: block;
  font-size: 0.48em;
  color: var(--muted);
  margin-top: 0.2em;
  font-family: var(--mono);
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

/* ----- terminal chrome ----- */

.term {
  background: #010409;
  border: 1px solid var(--border);
  border-radius: 12px;
  overflow: hidden;
  font-family: var(--mono);
  box-shadow: 0 12px 40px rgba(0, 0, 0, 0.35);
  width: 100%;
  box-sizing: border-box;
}

.term-bar {
  display: flex;
  align-items: center;
  gap: 0.35em;
  padding: 0.45em 0.7em;
  background: var(--bg-elev);
  border-bottom: 1px solid var(--border);
}

.dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  display: inline-block;
}
.dot.r { background: #f87171; }
.dot.y { background: #fbbf24; }
.dot.g { background: #34d399; }

.term-title {
  margin-left: 0.5em;
  font-size: 0.48em;
  color: var(--muted);
}

.term pre,
.term .term-body {
  padding: 0.85em 1em 1em;
  font-size: 0.62em;
  line-height: 1.55;
  color: var(--text);
  margin: 0;
  white-space: pre-wrap;
}

.prompt { color: var(--green); }
.comment { color: var(--muted); }
.kw { color: var(--purple); }
.str { color: var(--yellow); }
.ident { color: var(--blue); }
.green { color: var(--green); }
.red { color: var(--red); }
.yellow { color: var(--yellow); }
.blue { color: var(--blue); }
.purple { color: var(--purple); }
.pink { color: var(--pink); }
.muted { color: var(--muted); }
.bright { color: var(--text-bright); }

.cursor {
  display: inline-block;
  width: 0.55em;
  height: 1.05em;
  background: var(--green);
  margin-left: 0.1em;
  vertical-align: -0.15em;
  animation: blink 1.1s steps(1) infinite;
}

@keyframes blink {
  50% { opacity: 0; }
}

/* ----- title slide ----- */

#_title .slide-content {
  display: flex;
  flex-direction: column;
  justify-content: center;
  min-height: 100%;
}

.hero {
  padding-top: 0.2em;
}

.hero .term {
  max-width: 46em;
  margin-bottom: 1.1em;
}

.hero .slide-title {
  font-size: 1.85em;
  margin: 0.15em 0 0.25em;
}

.hero-foot,
.hero-foot > .content,
.hero-foot > .content p {
  display: flex;
  justify-content: space-between;
  gap: 1em;
  margin-top: 1.6em;
  font-family: var(--mono);
  font-size: 0.5em;
  color: var(--muted);
  width: 100%;
}

/* ----- itinerary ----- */

.agenda {
  display: grid;
  grid-template-columns: 0.88fr 1.22fr;
  gap: 1em;
  align-items: start;
  width: 100%;
}

.agenda-copy {
  display: flex;
  flex-direction: column;
  gap: 0.75em;
}

.agenda .lede {
  margin: 0;
}

.agenda .yt-card {
  height: auto;
}

.itinerary {
  font-family: var(--mono);
  font-size: 0.58em;
  line-height: 1.7;
}

.itinerary .row {
  display: grid;
  grid-template-columns: 2.2em 1.2em 1fr auto;
  gap: 0.6em;
  align-items: baseline;
  padding: 0.15em 0;
  border-bottom: 1px solid #21262d;
}

.itinerary .row:last-child { border-bottom: 0; }

.itinerary .n { color: var(--green); }
.itinerary .pipe { color: var(--border); }
.itinerary .name { color: var(--text-bright); font-weight: 600; }
.itinerary .hint { color: var(--muted); }

/* ----- timeline / list rows ----- */

.timeline {
  display: flex;
  flex-direction: column;
  gap: 0.55em;
}

.tl {
  display: grid;
  grid-template-columns: 4.6em 1fr;
  gap: 0.8em;
  background: var(--bg-elev);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 0.55em 0.75em;
}

.tl .year {
  font-family: var(--mono);
  font-weight: 650;
  color: var(--yellow);
  font-size: 0.72em;
}

.tl h3 { font-size: 0.68em; margin: 0 0 0.1em; }
.tl p { font-size: 0.55em; }

.warn-box {
  background: #2d1f14;
  border: 1px solid #9e6a2a;
  border-radius: 10px;
  padding: 0.65em 0.8em;
}

.warn-box .kicker { color: var(--yellow); }
.warn-box ul {
  margin: 0.2em 0 0 1em;
  font-size: 0.58em;
  color: var(--text);
}

.warn-box li { margin: 0.12em 0; }

.archetype {
  background: var(--bg-elev-2);
  border: 1px dashed var(--border);
  border-radius: 10px;
  padding: 0.6em 0.75em;
  font-size: 0.62em;
  line-height: 1.4;
  color: var(--text);
}

.archetype .kicker { margin-bottom: 0.25em; }

.branch {
  display: flex;
  flex-direction: column;
  gap: 0.2em;
}

.branch .name {
  font-family: var(--mono);
  font-size: 0.62em;
  font-weight: 650;
  color: var(--green);
}

.branch p { font-size: 0.55em; }

/* ----- progression ----- */

.stages {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 0.7em;
  margin-top: 0.3em;
}

.stage-final {
  margin-top: 0.7em;
}

/* ----- hall of shame ----- */

.roast h3 {
  font-size: 0.78em;
}

.roast .aka {
  font-family: var(--mono);
  font-size: 0.48em;
  color: var(--pink);
  text-transform: uppercase;
  letter-spacing: 0.06em;
  margin-bottom: 0.15em;
}

/* ----- decision ----- */

.guide-row {
  display: grid;
  grid-template-columns: 13em 1fr auto;
  gap: 0.8em;
  align-items: center;
  background: var(--bg-elev);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 0.5em 0.8em;
}

.guide-row .q {
  font-weight: 650;
  font-size: 0.68em;
  color: var(--text-bright);
}

.guide-row .a {
  font-size: 0.68em;
  color: var(--green);
  font-weight: 650;
}

.guide-row .hint {
  font-size: 0.52em;
  color: var(--muted);
  font-style: italic;
}

.arc {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4em;
  align-items: center;
  margin-top: 0.5em;
}

.arc .step {
  background: var(--bg-elev);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 0.25em 0.55em;
  font-size: 0.52em;
  font-family: var(--mono);
}

.arc .step strong {
  display: block;
  font-size: 1.15em;
  font-family: var(--sans);
}

.arc .arrow {
  color: var(--muted);
  font-size: 0.7em;
}

.protip {
  margin-top: 0.7em;
  background: #12261c;
  border: 1px solid #1f6f4a;
  border-radius: 10px;
  padding: 0.55em 0.8em;
  font-size: 0.68em;
}

.protip .kicker { color: var(--green); }

/* ----- footer line ----- */

.slide-foot {
  position: absolute;
  left: 48px;
  right: 110px;
  bottom: 14px;
  font-family: var(--mono);
  font-size: 12px;
  color: var(--muted);
  display: flex;
  justify-content: space-between;
}

/* compact lists inside cards */
.card ul {
  margin: 0.2em 0 0 1em;
  font-size: 0.58em;
}

.tag {
  font-family: var(--mono);
  font-size: 0.48em;
  color: var(--purple);
  letter-spacing: 0.04em;
}

.small {
  font-size: 0.62em;
  color: var(--muted);
  line-height: 1.4;
}

/* print / pdf */
@media print {
  .reveal .slides section {
    background: var(--bg) !important;
  }
}