/* =====================================================================
   Artigos: layout editorial (lista e artigo).
   Portado do caderno "Como a máquina econômica funciona" da Monvanti.
   Os tokens ficam escopados em .em-page para não vazar para o app.
   ===================================================================== */

/* Seletores agrupados por componente; os de ID animam figuras distintas. */
/* stylelint-disable no-descending-specificity */

.em-page {
  --paper: #fcfcfc;
  --ink: #020817;
  --gray-800: #334155;
  --fg-muted: #5b6470;
  --rule: #e2e8f0;
  --color-terracotta: #a85a00;
  --color-orange: #c26e00;
  --font-editorial: georgia, 'Times New Roman', times, serif;
  --font-sans: ui-sans-serif, system-ui, -apple-system, 'Segoe UI', roboto, helvetica, arial,
    sans-serif;
  --font-numeric: 'JetBrains Mono', ui-monospace, sfmono-regular, menlo, monaco, consolas,
    monospace;
  --leading-tight: 1.05;
  --leading-snug: 1.2;
  --leading-relaxed: 1.65;
  --tracking-tight: -0.02em;
  --tracking-snug: -0.01em;
  --duration-base: 0.2s;
  --ease-standard: cubic-bezier(0.2, 0, 0, 1);
  --em-measure: 40rem;
  --em-rail: 13.5rem;
  --em-gutter: clamp(1.25rem, 4vw, 2.5rem);
  --em-max: 72rem;

  min-height: 100vh;
  color: var(--ink);
  background: var(--paper);
}

.dark .em-page {
  --paper: #070707;
  --ink: #f8fafc;
  --gray-800: #cbd5e1;
  --fg-muted: #94a3b8;
  --rule: #27272a;
  --color-terracotta: #e48200;
  --color-orange: #f59e0b;
}

.em-page a {
  color: inherit;
  text-decoration-thickness: 1px;
  text-underline-offset: 0.18em;
}

.em-skip {
  position: absolute;
  left: -9999px;
  top: 0;
  z-index: 100;
  padding: 0.75rem 1rem;
  background: var(--ink);
  color: var(--paper);
  font-family: var(--font-sans);
  font-size: 0.875rem;
}

.em-skip:focus {
  left: var(--em-gutter);
  top: 0.75rem;
}

/* ---------- Masthead ---------- */
.em-masthead {
  border-bottom: 1px solid var(--rule);
  background: var(--paper);
}

.em-masthead-inner {
  max-width: var(--em-max);
  margin: 0 auto;
  padding: 1rem var(--em-gutter);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}

.em-brand {
  font-family: var(--font-sans);
  font-size: 1.125rem;
  font-weight: 600;
  letter-spacing: var(--tracking-snug);
  color: var(--ink);
  text-decoration: none;
}

.em-masthead-nav {
  display: flex;
  align-items: center;
  gap: 1.25rem;
}

.em-masthead-link {
  font-family: var(--font-sans);
  font-size: 0.8125rem;
  color: var(--fg-muted);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition:
    color var(--duration-base) var(--ease-standard),
    border-color var(--duration-base) var(--ease-standard);
}

.em-masthead-link:hover,
.em-masthead-link:focus-visible {
  color: var(--ink);
  border-bottom-color: var(--color-orange);
}

/* ---------- Hero ---------- */
.em-hero {
  max-width: var(--em-max);
  margin: 0 auto;
  padding: clamp(2.5rem, 6vw, 4.5rem) var(--em-gutter) clamp(2rem, 4vw, 3rem);
  border-bottom: 1px solid var(--rule);
}

.em-hero-meta {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 0.75rem 1.25rem;
  margin-bottom: 1.5rem;
  font-family: var(--font-sans);
  font-size: 0.75rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--fg-muted);
}

.em-eyebrow {
  color: var(--color-terracotta);
  font-weight: 500;
}

.em-hero-title {
  margin: 0 0 1.25rem;
  max-width: 42rem;
  font-family: var(--font-editorial);
  font-weight: 500;
  font-size: clamp(2.5rem, 6.5vw, 4.25rem);
  line-height: var(--leading-tight);
  letter-spacing: var(--tracking-tight);
  color: var(--ink);
}

.em-hero-lede {
  margin: 0;
  max-width: 42rem;
  font-family: var(--font-sans);
  font-size: clamp(1.0625rem, 1.6vw, 1.1875rem);
  line-height: 1.6;
  color: var(--gray-800);
}

.em-hero-lede strong {
  font-weight: 600;
  color: var(--ink);
}

/* ---------- Metrics ---------- */
.em-metrics {
  max-width: var(--em-max);
  margin: 0 auto;
  padding: 0 var(--em-gutter);
}

.em-metrics-inner {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 0;
  border-bottom: 1px solid var(--rule);
}

.em-metric {
  padding: 1.35rem clamp(1.25rem, 2.2vw, 2rem);
  border-right: 1px solid var(--rule);
}

.em-metric:last-child {
  border-right: 0;
  padding-right: 0;
}

.em-metric:first-child {
  padding-left: 0;
}

.em-metric-value {
  display: block;
  font-family: var(--font-numeric);
  font-size: clamp(1.5rem, 2.4vw, 1.875rem);
  font-weight: 400;
  letter-spacing: var(--tracking-snug);
  color: var(--ink);
  line-height: 1.15;
}

.em-metric-label {
  display: block;
  margin-top: 0.4rem;
  font-family: var(--font-sans);
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--ink);
}

.em-metric-note {
  display: block;
  margin-top: 0.2rem;
  font-family: var(--font-sans);
  font-size: 0.75rem;
  color: var(--fg-muted);
}

/* ---------- Layout shell ---------- */
.em-shell {
  max-width: var(--em-max);
  margin: 0 auto;
  padding: clamp(2rem, 4vw, 3rem) var(--em-gutter) clamp(3rem, 6vw, 5rem);
  display: grid;
  grid-template-columns: var(--em-rail) minmax(0, 1fr);
  gap: clamp(2rem, 4vw, 3.5rem);
  align-items: start;
}

.em-toc {
  position: sticky;
  top: 1.25rem;
  padding-top: 0.25rem;
}

.em-toc-label {
  margin: 0 0 0.85rem;
  font-family: var(--font-sans);
  font-size: 0.6875rem;
  font-weight: 500;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--fg-muted);
}

.em-toc-list {
  margin: 0;
  padding: 0;
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 0.55rem;
  border-left: 1px solid var(--rule);
}

.em-toc-list a {
  display: block;
  padding: 0.1rem 0 0.1rem 0.9rem;
  margin-left: -1px;
  border-left: 1px solid transparent;
  font-family: var(--font-sans);
  font-size: 0.8125rem;
  line-height: 1.35;
  color: var(--fg-muted);
  text-decoration: none;
  transition: color var(--duration-base) var(--ease-standard),
    border-color var(--duration-base) var(--ease-standard);
}

.em-toc-list a:hover,
.em-toc-list a:focus-visible {
  color: var(--ink);
  border-left-color: var(--color-orange);
}

/* ---------- Article ---------- */
.em-article {
  min-width: 0;
  max-width: calc(var(--em-measure) + 4rem);
}

.em-section {
  margin: 0 0 3rem;
  padding-top: 0.25rem;
}

.em-section:last-of-type {
  margin-bottom: 2rem;
}

.em-section-label {
  margin: 0 0 1.5rem;
  padding-bottom: 0.65rem;
  border-bottom: 1px solid var(--rule);
  font-family: var(--font-sans);
  font-size: 0.75rem;
  font-weight: 500;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--fg-muted);
}

.em-block {
  margin: 0 0 2rem;
}

.em-block:last-child {
  margin-bottom: 0;
}

.em-kicker {
  display: inline-block;
  margin: 0 0 0.55rem;
  font-family: var(--font-sans);
  font-size: 0.6875rem;
  font-weight: 500;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--color-terracotta);
}

.em-block-title {
  margin: 0 0 0.75rem;
  font-family: var(--font-editorial);
  font-size: 1.5rem;
  font-weight: 500;
  line-height: var(--leading-snug);
  letter-spacing: var(--tracking-snug);
  color: var(--ink);
}

.em-prose,
.em-prose p {
  font-family: var(--font-sans);
  font-size: 1.0625rem;
  line-height: var(--leading-relaxed);
  color: var(--gray-800);
}

.em-prose p {
  margin: 0 0 1rem;
  max-width: var(--em-measure);
}

.em-prose p:last-child {
  margin-bottom: 0;
}

.em-prose strong {
  font-weight: 600;
  color: var(--ink);
}

.em-list {
  margin: 0.25rem 0 1rem;
  padding: 0 0 0 1.15rem;
  max-width: var(--em-measure);
}

.em-list li {
  margin: 0 0 0.55rem;
  font-family: var(--font-sans);
  font-size: 1.0625rem;
  line-height: var(--leading-relaxed);
  color: var(--gray-800);
}

.em-list li:last-child {
  margin-bottom: 0;
}

.em-list strong {
  font-weight: 600;
  color: var(--ink);
}

/* ---------- Figures ---------- */
.em-figure {
  margin: 1.35rem 0 1.5rem;
  max-width: min(100%, 36rem);
}

.em-figure-wide {
  max-width: min(100%, 48rem);
  margin-top: 2.25rem;
  margin-bottom: 2.25rem;
}

.em-figure-panel {
  border: 0;
  background: transparent;
  padding: 0;
  overflow: hidden;
}

.em-figure-wide .em-figure-panel {
  padding: 0;
}

.em-svg {
  display: block;
  width: 100%;
  height: auto;
  color: var(--ink);
}

.em-svg text {
  font-family: var(--font-sans);
  fill: currentcolor;
}

.em-svg .em-svg-muted {
  opacity: 0.55;
}

.em-svg .em-svg-accent {
  stroke: var(--color-terracotta);
  fill: none;
}

.em-svg .em-svg-mark {
  fill: var(--color-orange);
}

.em-svg .em-svg-bar {
  fill: var(--color-terracotta);
}

#transacoes .em-svg-mark {
  transform-box: fill-box;
  transform-origin: center;
  animation: em-transaction-flow 2.4s ease-in-out infinite;
}

#transacoes .em-svg-mark:nth-of-type(3) {
  animation-delay: -1.6s;
}

#transacoes .em-svg-mark:nth-of-type(4) {
  animation-delay: -0.8s;
}

#credito .em-svg path:first-of-type {
  stroke-dasharray: 200;
  animation: em-credit-forward 3s ease-in-out infinite;
}

#credito .em-svg .em-svg-accent {
  animation: em-credit-return 1.4s linear infinite;
}

#produtividade .em-svg path {
  stroke-dasharray: 310;
  animation: em-productivity-rise 4s var(--ease-standard) infinite;
}

#produtividade .em-svg-mark {
  transform-box: fill-box;
  transform-origin: center;
  animation: em-soft-pulse 2s ease-in-out infinite;
}

#ondas .em-svg path:nth-of-type(2) {
  animation: em-long-cycle 5s ease-in-out infinite alternate;
}

#ondas .em-svg-accent {
  stroke-dasharray: 9 7;
  animation: em-short-cycle 1.6s linear infinite;
}

#desalavancagem-bonita .em-svg-bar {
  transform-box: fill-box;
  transform-origin: bottom;
  animation: em-lever-balance 2.8s ease-in-out infinite alternate;
}

#desalavancagem-bonita .em-svg-bar:nth-of-type(2) {
  animation-delay: -0.7s;
}

#desalavancagem-bonita .em-svg-bar:nth-of-type(3) {
  animation-delay: -1.4s;
}

#desalavancagem-bonita .em-svg-bar:nth-of-type(4) {
  animation-delay: -2.1s;
}

@keyframes em-transaction-flow {
  0%, 100% {
    opacity: 0.35;
    transform: translateX(-8px) scale(0.82);
  }

  50% {
    opacity: 1;
    transform: translateX(8px) scale(1.08);
  }
}

@keyframes em-credit-forward {
  0%, 15% {
    stroke-dashoffset: 200;
    opacity: 0.35;
  }

  55%, 100% {
    stroke-dashoffset: 0;
    opacity: 1;
  }
}

@keyframes em-credit-return {
  to {
    stroke-dashoffset: -28;
  }
}

@keyframes em-productivity-rise {
  0%, 15% {
    stroke-dashoffset: 310;
    opacity: 0.35;
  }

  65%, 100% {
    stroke-dashoffset: 0;
    opacity: 1;
  }
}

@keyframes em-soft-pulse {
  0%, 100% {
    opacity: 0.55;
    transform: scale(0.82);
  }

  50% {
    opacity: 1;
    transform: scale(1.18);
  }
}

@keyframes em-long-cycle {
  from {
    transform: translateY(2px);
    opacity: 0.55;
  }

  to {
    transform: translateY(-3px);
    opacity: 0.85;
  }
}

@keyframes em-short-cycle {
  to {
    stroke-dashoffset: -32;
  }
}

@keyframes em-lever-balance {
  from {
    transform: scaleY(0.72);
    opacity: 0.55;
  }

  to {
    transform: scaleY(1);
    opacity: 0.95;
  }
}

.em-figcaption {
  margin: 0.7rem 0 0;
  font-family: var(--font-sans);
  font-size: 0.8125rem;
  line-height: 1.5;
  color: var(--fg-muted);
  max-width: var(--em-measure);
}

.em-figcaption .em-fig-ref {
  font-weight: 600;
  color: var(--ink);
}

/* ---------- Pull quote ---------- */
.em-pull {
  margin: 2.5rem 0;
  padding: 1.75rem 0;
  border-top: 1px solid var(--rule);
  border-bottom: 1px solid var(--rule);
  max-width: min(100%, 34rem);
}

.em-pull-label {
  margin: 0 0 0.75rem;
  font-family: var(--font-sans);
  font-size: 0.6875rem;
  font-style: normal;
  font-weight: 500;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--fg-muted);
}

.em-pull-text {
  margin: 0;
  font-family: var(--font-editorial);
  font-size: clamp(1.25rem, 2.2vw, 1.5rem);
  font-weight: 400;
  font-style: italic;
  line-height: 1.45;
  color: var(--ink);
  text-wrap: pretty;
}

/* ---------- Rules list ---------- */
.em-rules {
  margin: 0;
  padding: 0;
  list-style: none;
  max-width: var(--em-measure);
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.em-rules li {
  padding: 1rem 0 1rem 1rem;
  border-left: 2px solid var(--color-terracotta);
  font-family: var(--font-sans);
  font-size: 1.0625rem;
  line-height: var(--leading-relaxed);
  color: var(--gray-800);
}

.em-rules strong {
  display: block;
  margin-bottom: 0.25rem;
  font-family: var(--font-editorial);
  font-size: 1.125rem;
  font-weight: 500;
  color: var(--ink);
}

/* ---------- Attribution / disclaimer / brand footer ---------- */
.em-attribution,
.em-disclaimer {
  margin: 2rem 0 0;
  padding-top: 1.25rem;
  border-top: 1px solid var(--rule);
  max-width: var(--em-measure);
  font-family: var(--font-sans);
  font-size: 0.875rem;
  line-height: 1.55;
  color: var(--fg-muted);
}

.em-attribution a {
  color: var(--ink);
  text-decoration: underline;
  text-decoration-thickness: 1px;
  text-underline-offset: 0.15em;
}

.em-attribution a:hover,
.em-attribution a:focus-visible {
  color: var(--color-terracotta);
}

.em-disclaimer {
  margin-top: 1rem;
  border-top: 0;
  padding-top: 0;
}

.em-brand-footer {
  margin-top: 2.5rem;
  padding-top: 1.5rem;
  border-top: 1px solid var(--rule);
  max-width: var(--em-measure);
  font-family: var(--font-sans);
  font-size: 0.875rem;
  line-height: 1.55;
  color: var(--fg-muted);
}

.em-brand-footer a {
  color: var(--ink);
  font-weight: 500;
  text-decoration: none;
  border-bottom: 1px solid color-mix(in srgb, var(--color-orange) 55%, transparent);
}

.em-brand-footer a:hover,
.em-brand-footer a:focus-visible {
  color: var(--color-terracotta);
  border-bottom-color: var(--color-terracotta);
}

/* ---------- Article CTA ---------- */
.em-cta {
  margin-top: 2.5rem;
  padding: 1.5rem;
  max-width: var(--em-measure);
  border: 1px solid var(--rule);
  border-left: 2px solid var(--color-terracotta);
  font-family: var(--font-sans);
}

.em-cta-title {
  margin: 0 0 0.5rem;
  font-family: var(--font-editorial);
  font-size: 1.25rem;
  font-weight: 500;
  color: var(--ink);
}

.em-cta-text {
  margin: 0 0 1rem;
  font-size: 1rem;
  line-height: 1.55;
  color: var(--gray-800);
}

.em-page .em-cta-link {
  display: inline-block;
  padding: 0.65rem 1.1rem;
  background: var(--ink);
  color: var(--paper);
  font-size: 0.9375rem;
  font-weight: 600;
  text-decoration: none;
}

.em-page .em-cta-link:hover,
.em-page .em-cta-link:focus-visible {
  background: var(--color-terracotta);
  color: var(--paper);
}

/* ---------- Articles index ---------- */
.em-index {
  max-width: var(--em-max);
  margin: 0 auto;
  padding: clamp(2rem, 4vw, 3rem) var(--em-gutter) clamp(3rem, 6vw, 5rem);
}

.em-index-list {
  margin: 0;
  padding: 0;
  list-style: none;
}

.em-index-item {
  padding: 1.75rem 0;
  border-bottom: 1px solid var(--rule);
}

.em-index-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem 1.25rem;
  margin-bottom: 0.75rem;
  font-family: var(--font-sans);
  font-size: 0.75rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--fg-muted);
}

.em-index-title {
  margin: 0 0 0.6rem;
  font-family: var(--font-editorial);
  font-size: clamp(1.5rem, 3vw, 2rem);
  font-weight: 500;
  line-height: var(--leading-snug);
  letter-spacing: var(--tracking-snug);
}

.em-page .em-index-title a {
  color: var(--ink);
  text-decoration: none;
}

.em-page .em-index-title a:hover,
.em-page .em-index-title a:focus-visible {
  text-decoration: underline;
  text-decoration-color: var(--color-orange);
}

.em-index-description {
  margin: 0;
  max-width: var(--em-measure);
  font-family: var(--font-sans);
  font-size: 1.0625rem;
  line-height: var(--leading-relaxed);
  color: var(--gray-800);
}

/* ---------- Responsive ---------- */
@media (width <= 900px) {
  .em-shell {
    grid-template-columns: 1fr;
    gap: 1.75rem;
  }

  .em-toc {
    position: static;
    padding: 0 0 0.25rem;
    border-bottom: 1px solid var(--rule);
  }

  .em-toc-list {
    flex-flow: row wrap;
    gap: 0.35rem 0.85rem;
    border-left: 0;
    padding-bottom: 1rem;
  }

  .em-toc-list a {
    padding: 0.15rem 0;
    margin-left: 0;
    border-left: 0;
    border-bottom: 1px solid transparent;
  }

  .em-toc-list a:hover,
  .em-toc-list a:focus-visible {
    border-left-color: transparent;
    border-bottom-color: var(--color-orange);
  }
}

@media (width <= 640px) {
  .em-metrics-inner {
    grid-template-columns: 1fr;
  }

  .em-metric {
    border-right: 0;
    border-bottom: 1px solid var(--rule);
    padding: 1rem 0;
  }

  .em-metric:last-child {
    border-bottom: 0;
  }

  .em-hero-title {
    max-width: none;
  }
}

/* ---------- Reduced motion ---------- */
@media (prefers-reduced-motion: reduce) {
  .em-page *,
  .em-page *::before,
  .em-page *::after {
    animation: none !important;
    transition: none !important;
  }
}

/* ---------- Print ---------- */
@media print {
  .em-skip,
  .em-masthead-nav,
  .em-toc,
  .em-cta {
    display: none !important;
  }

  .em-page {
    background: white;
    color: black;
  }

  .em-shell {
    display: block;
    padding-top: 1rem;
  }

  .em-hero,
  .em-metrics,
  .em-figure,
  .em-pull {
    break-inside: avoid;
  }

  .em-page a {
    text-decoration: underline;
  }

  .em-attribution a::after {
    content: ' (' attr(href) ')';
    font-size: 0.8em;
    word-break: break-all;
  }
}