/* ABOUTME: Reveal.js theme matching Kilometru Zero editorial design tokens.
   ABOUTME: Mirrors web/src/styles.css — paper surfaces, Newsreader serif, signal red. */

:root {
  --color-paper: #f9f9f9;
  --color-paper-tint: #f3f3f3;
  --color-paper-deep: #eeeeee;
  --color-paper-edge: #e2e2e2;

  --color-ink: #1a1c1c;
  --color-ink-soft: #444748;
  --color-ink-mid: #747878;
  --color-rule: #c4c7c7;
  --color-rule-soft: #e5e5e5;

  --color-signal: #bb0115;
  --color-signal-deep: #93000e;

  --font-serif: "Newsreader", "Times New Roman", Georgia, serif;
  --font-sans: "Inter", system-ui, -apple-system, "Segoe UI", sans-serif;

  --tracking-label: 0.12em;
}

html,
body,
.reveal {
  background: var(--color-paper);
  color: var(--color-ink);
  font-family: var(--font-sans);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-rendering: optimizeLegibility;
  font-variant-numeric: oldstyle-nums;
}

.reveal {
  font-size: 22px;
  line-height: 1.55;
}

::selection {
  background: var(--color-ink);
  color: var(--color-paper);
}

/* Reveal chrome --------------------------------------------------- */
.reveal .progress {
  color: var(--color-signal);
  height: 2px;
}

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

.reveal .slide-number {
  font-family: var(--font-sans);
  font-size: 11px;
  font-weight: 700;
  letter-spacing: var(--tracking-label);
  text-transform: uppercase;
  color: var(--color-ink-mid);
  background: transparent;
  padding: 6px 10px;
  right: 16px;
  bottom: 12px;
}

/* Slide scaffold -------------------------------------------------- */
.reveal .slides {
  text-align: left;
}

.reveal .slides section {
  padding: 0;
  height: 100%;
}

.kz-slide {
  display: flex;
  flex-direction: column;
  gap: 24px;
  width: 100%;
  height: 100%;
  padding: 48px 64px;
  background: var(--color-paper);
}

.kz-slide--hero {
  justify-content: center;
}

.kz-slide--fin {
  justify-content: center;
  gap: 40px;
}

/* Eyebrow / signal ------------------------------------------------ */
.kz-eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  font-family: var(--font-sans);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: var(--tracking-label);
  text-transform: uppercase;
  color: var(--color-signal);
}

.kz-signal {
  display: inline-block;
  width: 10px;
  height: 10px;
  background: var(--color-signal);
  flex-shrink: 0;
}

.kz-signal--sm {
  width: 7px;
  height: 7px;
}

/* Typography ------------------------------------------------------ */
.reveal h1.kz-display {
  font-family: var(--font-serif);
  font-weight: 600;
  font-size: 88px;
  line-height: 1.02;
  letter-spacing: -0.02em;
  color: var(--color-ink);
  margin: 0;
  text-transform: none;
  text-align: left;
  text-wrap: balance;
}

.reveal h2.kz-headline {
  font-family: var(--font-serif);
  font-weight: 500;
  font-size: 48px;
  line-height: 1.15;
  letter-spacing: -0.01em;
  color: var(--color-ink);
  margin: 0;
  text-transform: none;
  text-align: left;
  text-wrap: balance;
}

.kz-display em,
.kz-headline em {
  font-style: italic;
  font-weight: 600;
  color: var(--color-ink);
}

.kz-lede {
  font-family: var(--font-sans);
  font-size: 22px;
  line-height: 1.55;
  color: var(--color-ink-soft);
  max-width: 64ch;
  margin: 0;
}

.kz-body {
  font-family: var(--font-sans);
  font-size: 19px;
  line-height: 1.65;
  color: var(--color-ink-soft);
  max-width: 56ch;
  margin: 0;
}

.kz-label {
  display: inline-block;
  font-family: var(--font-sans);
  font-size: 11px;
  font-weight: 700;
  letter-spacing: var(--tracking-label);
  text-transform: uppercase;
  color: var(--color-ink);
  margin-right: 12px;
}

.kz-meta {
  font-family: var(--font-sans);
  font-size: 13px;
  color: var(--color-ink-mid);
  letter-spacing: 0.04em;
  margin: 0;
}

.kz-rule {
  border: 0;
  border-top: 1px solid var(--color-rule-soft);
  margin: 8px 0;
}

.kz-rule--strong {
  border-top: 1px solid var(--color-ink);
}

/* Ribbon (stat row) ---------------------------------------------- */
.kz-ribbon {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  border-top: 1px solid var(--color-ink);
  border-bottom: 1px solid var(--color-rule-soft);
  margin-top: 8px;
}

.kz-ribbon[data-tiles="4"] {
  grid-template-columns: repeat(4, minmax(0, 1fr));
}

.kz-ribbon__tile {
  display: flex;
  flex-direction: column;
  gap: 8px;
  padding: 22px 24px 24px;
  border-right: 1px solid var(--color-rule-soft);
}

.kz-ribbon__tile:last-child {
  border-right: 0;
}

.kz-ribbon__label {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-family: var(--font-sans);
  font-size: 11px;
  font-weight: 700;
  letter-spacing: var(--tracking-label);
  text-transform: uppercase;
  color: var(--color-ink-soft);
}

.kz-ribbon__value {
  font-family: var(--font-serif);
  font-size: 56px;
  font-weight: 500;
  line-height: 1;
  color: var(--color-ink);
  font-variant-numeric: tabular-nums oldstyle-nums;
  letter-spacing: -0.01em;
}

.kz-ribbon__unit {
  font-family: var(--font-sans);
  font-size: 13px;
  font-weight: 700;
  letter-spacing: var(--tracking-label);
  text-transform: uppercase;
  color: var(--color-ink-mid);
  margin-left: 8px;
}

.kz-ribbon__context {
  font-family: var(--font-sans);
  font-size: 13px;
  color: var(--color-ink-mid);
  line-height: 1.45;
}

/* Columns / lists ------------------------------------------------- */
.kz-cols {
  display: grid;
  gap: 48px;
}

.kz-cols--2 {
  grid-template-columns: 1.1fr 1fr;
}

.reveal .kz-list,
.reveal .kz-steps {
  list-style: none;
  padding: 0;
  margin: 0;
  display: flex;
  flex-direction: column;
  gap: 14px;
  font-family: var(--font-sans);
  font-size: 18px;
  line-height: 1.5;
  color: var(--color-ink-soft);
}

.reveal .kz-list li,
.reveal .kz-steps li {
  border-top: 1px solid var(--color-rule-soft);
  padding-top: 12px;
}

.reveal .kz-list li:first-child,
.reveal .kz-steps li:first-child {
  border-top: 1px solid var(--color-ink);
}

/* Stack rows (architecture summary) ------------------------------ */
.kz-stack {
  display: flex;
  flex-direction: column;
  border-top: 1px solid var(--color-ink);
}

.kz-stack__row {
  display: grid;
  grid-template-columns: 110px 1fr;
  gap: 16px;
  align-items: baseline;
  padding: 14px 0;
  border-bottom: 1px solid var(--color-rule-soft);
}

.kz-stack__val {
  font-family: var(--font-serif);
  font-size: 19px;
  font-style: italic;
  color: var(--color-ink);
  font-feature-settings: "tnum" 1;
}

/* Known-cases list ------------------------------------------------ */
.kz-cases {
  margin-top: 8px;
  border-top: 1px solid var(--color-rule-soft);
  padding-top: 16px;
}

.kz-cases__title {
  font-family: var(--font-sans);
  font-size: 11px;
  font-weight: 700;
  letter-spacing: var(--tracking-label);
  text-transform: uppercase;
  color: var(--color-ink-soft);
  margin-bottom: 12px;
}

.reveal .kz-cases__list {
  list-style: none;
  padding: 0;
  margin: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 8px 24px;
  font-family: var(--font-serif);
  font-style: italic;
  font-size: 18px;
  color: var(--color-ink);
}

.reveal .kz-cases__list li {
  display: inline-flex;
  align-items: center;
  gap: 8px;
}

/* Team ------------------------------------------------------------ */
.kz-team {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 32px;
  border-top: 1px solid var(--color-ink);
  padding-top: 24px;
}

.kz-team--solo {
  grid-template-columns: minmax(0, 720px);
}

.kz-team__card {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.kz-team__name {
  font-family: var(--font-serif);
  font-size: 28px;
  font-weight: 600;
  color: var(--color-ink);
  line-height: 1.1;
}

.kz-team__role {
  font-family: var(--font-sans);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: var(--tracking-label);
  text-transform: uppercase;
  color: var(--color-signal);
  margin-bottom: 6px;
}

.kz-team__email {
  font-family: var(--font-serif);
  font-style: italic;
  font-size: 20px;
  color: var(--color-ink);
  text-decoration: underline;
  text-decoration-thickness: 1px;
  text-underline-offset: 4px;
}

.kz-team__row {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 24px;
  flex-wrap: wrap;
}

.kz-team__card .kz-body em {
  font-style: italic;
  font-weight: 600;
  color: var(--color-signal);
}

.reveal a.kz-team__email:hover {
  color: var(--color-signal);
}

/* Fin slide -------------------------------------------------------- */
.kz-fin {
  margin: 0;
  padding: 0;
  border: 0;
  max-width: 22ch;
}

.kz-fin__quote {
  font-family: var(--font-serif);
  font-weight: 500;
  font-size: 84px;
  line-height: 1.02;
  letter-spacing: -0.02em;
  color: var(--color-ink);
  margin: 0;
  text-wrap: balance;
}

.kz-fin__quote em {
  font-style: italic;
  font-weight: 600;
  color: var(--color-signal);
}

.kz-fin__kicker {
  font-family: var(--font-serif);
  font-style: italic;
  font-weight: 600;
  font-size: 36px;
  line-height: 1.15;
  color: var(--color-signal);
  margin: 28px 0 0;
  padding-top: 24px;
  border-top: 1px solid var(--color-ink);
  max-width: 22ch;
}

.kz-fin__sig {
  font-family: var(--font-sans);
  font-size: 12px;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--color-ink-mid);
}

/* Pull-quote (closing editorial moment) --------------------------- */
.kz-pullquote {
  margin: 0;
  padding: 4px 0 4px 20px;
  border-left: 3px solid var(--color-signal);
}

.kz-pullquote p {
  font-family: var(--font-serif);
  font-size: 26px;
  line-height: 1.3;
  font-weight: 500;
  color: var(--color-ink);
  margin: 0;
  text-wrap: balance;
}

.kz-pullquote em {
  font-style: italic;
  color: var(--color-signal);
  font-weight: 600;
}

.kz-pullquote__edge {
  display: inline;
  color: var(--color-ink);
  font-weight: 600;
}

/* Free-forever pledge --------------------------------------------- */
.kz-pledge {
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.kz-pledge__headline {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  font-family: var(--font-serif);
  font-style: italic;
  font-weight: 600;
  font-size: 30px;
  line-height: 1.15;
  color: var(--color-signal);
  letter-spacing: -0.01em;
}

/* Reveal overrides for headings to not uppercase ----------------- */
.reveal h1,
.reveal h2,
.reveal h3,
.reveal h4 {
  text-transform: none;
  text-align: left;
}

/* Tighten reveal default link color ------------------------------ */
.reveal a {
  color: var(--color-ink);
  text-decoration: underline;
  text-decoration-thickness: 1px;
  text-underline-offset: 4px;
}

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