/* Uptrend — editorial studio stylesheet. No build step. */

:root {
  --paper: #f3efe6;
  --paper-2: #ebe6da;
  --ink: #141310;
  --ink-2: #34312c;
  --muted: #5f5a51;   /* 5.9:1 on paper */
  --rule: #cfc8ba;    /* hairlines only, never text */
  --accent: #c2330e;  /* vermilion, 4.6:1 on paper */

  --serif: "Instrument Serif", "Times New Roman", Times, serif;
  --sans: "Inter Tight", system-ui, -apple-system, "Segoe UI", Roboto, sans-serif;
  --mono: "JetBrains Mono", ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;

  --max: 1440px;
  --pad: clamp(20px, 4vw, 56px);
  --gutter: clamp(16px, 2vw, 28px);
  --ease: cubic-bezier(.2, .7, .2, 1);
}

*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }
body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font: 400 1.0625rem/1.6 var(--sans);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-rendering: optimizeLegibility;
}
h1, h2, h3, p, ul, ol { margin: 0; }
img, svg { display: block; }
::selection { background: var(--ink); color: var(--paper); }

:focus { outline: none; }
:focus-visible { outline: 2px solid var(--accent); outline-offset: 4px; border-radius: 1px; }

.container { max-width: var(--max); margin-inline: auto; padding-inline: var(--pad); }
.grid12 {
  display: grid;
  grid-template-columns: repeat(12, minmax(0, 1fr));
  column-gap: var(--gutter);
}

.mono {
  font-family: var(--mono);
  font-size: .75rem;
  font-weight: 400;
  line-height: 1.5;
  letter-spacing: .04em;
  text-transform: uppercase;
}
.muted { color: var(--muted); }
.accent { color: var(--accent); }
.visually-hidden {
  position: absolute !important; width: 1px; height: 1px; overflow: hidden;
  clip: rect(0 0 0 0); clip-path: inset(50%); white-space: nowrap;
}

/* Skip link */
.skip {
  position: absolute; left: var(--pad); top: -100px; z-index: 10;
  background: var(--ink); color: var(--paper);
  padding: .6rem 1rem; text-decoration: none;
  font-family: var(--mono); font-size: .75rem; text-transform: uppercase; letter-spacing: .04em;
}
.skip:focus { top: 12px; }

/* Link underline that draws in from the left, retracts to the right */
.u {
  color: inherit;
  text-decoration: none;
  background: linear-gradient(currentColor, currentColor) no-repeat 100% 100% / 0 1px;
  padding-bottom: 2px;
  transition: background-size .45s var(--ease), color .2s;
}
.u:hover, .u:focus-visible, .u[aria-current="page"] {
  background-size: 100% 1px;
  background-position: 0 100%;
}

/* ---------- Header ---------- */
.site-head { border-bottom: 1px solid var(--rule); }
.head-inner {
  display: flex; flex-wrap: wrap;
  align-items: center; justify-content: space-between;
  gap: .75rem 2rem;
  padding-block: 1.1rem;
}
.wordmark {
  display: inline-flex; align-items: flex-start;
  font-family: var(--serif);
  font-size: 1.875rem; line-height: 1;
  letter-spacing: -.01em;
  color: var(--ink); text-decoration: none;
}
.wordmark svg {
  width: .34em; height: .34em;
  margin: .06em 0 0 .06em;
  color: var(--accent);
  transition: transform .45s var(--ease);
}
.wordmark:hover svg { transform: translate(.08em, -.08em); }

.site-nav ul { list-style: none; padding: 0; display: flex; flex-wrap: wrap; gap: .4rem 1.75rem; }
.site-nav a { font-family: var(--mono); font-size: .75rem; letter-spacing: .04em; text-transform: uppercase; }
.site-nav a[aria-current="page"] { color: var(--accent); }

/* ---------- Hero ---------- */
.hero { padding-block: clamp(1.5rem, 3vw, 2.5rem) clamp(4rem, 10vw, 9rem); }
.hero-meta {
  grid-column: 1 / -1;
  display: flex; flex-wrap: wrap; justify-content: space-between;
  gap: .5rem 2rem;
  color: var(--muted);
  padding-bottom: 1rem;
  border-bottom: 1px solid var(--rule);
  margin-bottom: clamp(2.5rem, 7vw, 6rem);
}
.hero-meta ul { list-style: none; padding: 0; display: flex; flex-wrap: wrap; gap: .25rem 1.25rem; }
.hero-meta a { color: var(--ink); }

.display {
  grid-column: 1 / -1;
  font-family: var(--serif);
  font-weight: 400;
  font-size: clamp(2.9rem, 11.4vw, 11.5rem);
  line-height: .88;
  letter-spacing: -.025em;
}
.display > span { display: block; }
.display .l2 { padding-left: calc(100% / 12 * 2); }
.display .l3 { padding-left: calc(100% / 12 * 6); }
.display em { font-style: italic; color: var(--accent); padding-right: .04em; }

.hero-foot { margin-top: clamp(3rem, 7vw, 6rem); align-items: end; row-gap: 2rem; }
.hero-note { grid-column: 1 / span 4; color: var(--muted); max-width: 32ch; }
.hero-note strong { display: block; color: var(--ink); font-weight: 400; }
.hero-lead { grid-column: 7 / span 6; }
.hero-lead p {
  font-size: clamp(1.125rem, 1.55vw, 1.4rem);
  line-height: 1.45;
  max-width: 36ch;
  color: var(--ink-2);
  margin-bottom: 1.75rem;
}

.cta {
  display: inline-flex; align-items: center; gap: .6em;
  font-family: var(--mono); font-size: .8125rem; letter-spacing: .04em; text-transform: uppercase;
}
.arrow { display: inline-block; transition: transform .45s var(--ease); }
.cta:hover .arrow, .cta:focus-visible .arrow { transform: translateX(.35em); }

/* ---------- Sections ---------- */
.section { border-top: 1px solid var(--ink); padding-block: clamp(1.25rem, 2vw, 1.75rem) clamp(4.5rem, 10vw, 9rem); }
.sec-head {
  grid-column: 1 / -1;
  display: flex; align-items: baseline; gap: 1.25rem;
  margin-bottom: clamp(2.5rem, 6vw, 5.5rem);
}
.sec-num { color: var(--accent); }
.sec-head h2 { font: inherit; }

.statement {
  grid-column: 1 / span 11;
  font-family: var(--serif);
  font-weight: 400;
  font-size: clamp(2rem, 4.4vw, 4.4rem);
  line-height: 1.04;
  letter-spacing: -.015em;
  text-indent: calc(100% / 11 * 2);
  margin-bottom: clamp(3.5rem, 8vw, 7rem);
}
.statement em { font-style: italic; }

/* Hairline-ruled numbered index (O que fazemos) */
.index-list { grid-column: 1 / -1; list-style: none; padding: 0; border-bottom: 1px solid var(--rule); }
.index-list li {
  display: grid;
  grid-template-columns: repeat(12, minmax(0, 1fr));
  column-gap: var(--gutter);
  align-items: baseline;
  padding-block: clamp(1.25rem, 2.4vw, 2rem);
  border-top: 1px solid var(--rule);
}
.il-num { grid-column: 1 / span 1; color: var(--muted); }
.il-title {
  grid-column: 2 / span 5;
  font-family: var(--serif); font-weight: 400;
  font-size: clamp(1.6rem, 2.6vw, 2.375rem);
  line-height: 1.1;
}
.il-desc { grid-column: 7 / span 5; color: var(--ink-2); max-width: 46ch; }

/* Apps as ruled rows */
.apps-list { grid-column: 1 / -1; list-style: none; padding: 0; border-bottom: 1px solid var(--rule); }
.row {
  display: grid;
  grid-template-columns: repeat(12, minmax(0, 1fr));
  column-gap: var(--gutter);
  align-items: baseline;
  padding-block: clamp(1.75rem, 3.4vw, 2.75rem);
  border-top: 1px solid var(--rule);
  color: inherit; text-decoration: none;
  position: relative;
}
.row::before { /* ink rule that sweeps across on hover */
  content: ""; position: absolute; left: 0; top: -1px; height: 1px; width: 100%;
  background: var(--ink);
  transform: scaleX(0); transform-origin: right;
  transition: transform .6s var(--ease);
}
.row:hover::before, .row:focus-visible::before { transform: scaleX(1); transform-origin: left; }
.row-num { grid-column: 1 / span 1; color: var(--muted); }
.row-main { grid-column: 2 / span 6; transition: transform .5s var(--ease); }
.row-name {
  display: block;
  font-family: var(--serif); font-weight: 400;
  font-size: clamp(1.9rem, 3.6vw, 3.25rem);
  line-height: 1.02; letter-spacing: -.01em;
  margin-bottom: .75rem;
}
.row-desc { display: block; color: var(--ink-2); max-width: 46ch; }
.row-plat { grid-column: 8 / span 2; }
.row-plat small { display: block; color: var(--muted); font-size: inherit; }
.row-status { grid-column: 10 / span 2; }
.row-go {
  grid-column: 12 / span 1; justify-self: end;
  color: var(--muted); white-space: nowrap;
  transition: color .3s, transform .5s var(--ease);
}
.row:hover .row-main, .row:focus-visible .row-main { transform: translateX(14px); }
.row:hover .row-go, .row:focus-visible .row-go { color: var(--accent); transform: translateX(4px); }

.pill {
  display: inline-flex; align-items: center; gap: .55em;
  font-family: var(--mono); font-size: .6875rem; letter-spacing: .06em; text-transform: uppercase;
  color: var(--accent);
  border: 1px solid currentColor; border-radius: 999px;
  padding: .3em .8em .3em .7em;
  white-space: nowrap;
}
.pill::before {
  content: ""; width: 6px; height: 6px; border-radius: 50%;
  background: currentColor;
  animation: pulse 2.4s ease-in-out infinite;
}
@keyframes pulse { 50% { opacity: .25; } }

/* Contato */
.contact-kicker { grid-column: 1 / span 6; font-size: clamp(1.125rem, 1.55vw, 1.4rem); color: var(--ink-2); margin-bottom: clamp(1.25rem, 3vw, 2.25rem); }
.mega-wrap { grid-column: 1 / -1; margin-bottom: clamp(3rem, 7vw, 5.5rem); }
.mega {
  font-family: var(--serif);
  font-size: clamp(1.75rem, 6.2vw, 6rem);
  line-height: 1.05;
  letter-spacing: -.02em;
  color: var(--ink);
  text-decoration: none;
  overflow-wrap: anywhere;
  background:
    linear-gradient(var(--accent), var(--accent)) no-repeat 100% 100% / 0 .06em,
    linear-gradient(var(--rule), var(--rule)) no-repeat 0 100% / 100% .03em;
  padding-bottom: .08em;
  transition: background-size .7s var(--ease), color .3s;
}
.mega:hover, .mega:focus-visible {
  background-size: 100% .06em, 100% .03em;
  background-position: 0 100%, 0 100%;
}
.mega em { font-style: italic; }
.contact-meta { grid-column: 1 / -1; border-top: 1px solid var(--rule); padding-top: 1rem; row-gap: .75rem; }
.contact-meta > :nth-child(1) { grid-column: 1 / span 4; }
.contact-meta > :nth-child(2) { grid-column: 7 / span 6; }

/* ---------- Footer ---------- */
.site-foot { border-top: 1px solid var(--ink); padding-block: clamp(2.5rem, 5vw, 4rem) 1.5rem; }
.foot-top { align-items: end; row-gap: 2.5rem; }
.foot-mark {
  grid-column: 1 / span 8;
  display: flex; align-items: flex-start;
  font-family: var(--serif);
  font-size: clamp(4.5rem, 17vw, 16rem);
  line-height: .78;
  letter-spacing: -.03em;
}
.foot-mark svg { width: .28em; height: .28em; margin: .02em 0 0 .04em; color: var(--accent); }
.foot-nav { grid-column: 10 / span 3; }
.foot-nav ul { list-style: none; padding: 0; }
.foot-nav li { border-top: 1px solid var(--rule); padding-block: .5rem; }
.foot-nav li:last-child { border-bottom: 1px solid var(--rule); }
.foot-legal {
  margin-top: clamp(2.5rem, 5vw, 4rem);
  padding-top: 1rem;
  border-top: 1px solid var(--rule);
  color: var(--muted);
  font-size: .6875rem;
}

/* ---------- Documents (privacidade, termos, suporte) ---------- */
.doc-head { padding-block: clamp(2.5rem, 7vw, 6rem) clamp(1.5rem, 3vw, 2.5rem); }
.doc-head .grid12 { row-gap: 1.5rem; align-items: end; }
.doc-label { grid-column: 1 / -1; color: var(--muted); }
.doc-head h1 {
  grid-column: 1 / span 10;
  font-family: var(--serif); font-weight: 400;
  font-size: clamp(3rem, 8.4vw, 8.5rem);
  line-height: .9; letter-spacing: -.025em;
}
.doc-head .doc-meta { grid-column: 1 / -1; color: var(--muted); border-top: 1px solid var(--ink); padding-top: 1rem; margin-top: clamp(1.5rem, 4vw, 3rem); }

.doc-body { padding-block: clamp(2rem, 5vw, 4rem) clamp(4rem, 9vw, 8rem); align-items: start; }
.toc { grid-column: 1 / span 3; position: sticky; top: 1.5rem; }
.toc-label { color: var(--muted); margin-bottom: .75rem; }
.toc ol { list-style: none; padding: 0; }
.toc li { border-top: 1px solid var(--rule); }
.toc li:last-child { border-bottom: 1px solid var(--rule); }
.toc a {
  display: block;
  padding-block: .5rem;
  font-size: .875rem; line-height: 1.35;
  color: var(--ink-2); text-decoration: none;
  transition: color .2s, transform .4s var(--ease);
}
.toc a:hover, .toc a:focus-visible { color: var(--accent); transform: translateX(6px); }

.prose { grid-column: 5 / span 7; max-width: 68ch; font-size: 1.0625rem; line-height: 1.7; color: var(--ink-2); }
.prose > * + * { margin-top: 1em; }
.prose .lede { font-size: 1.25rem; line-height: 1.55; color: var(--ink); }
.prose h2 {
  font-family: var(--serif); font-weight: 400;
  font-size: clamp(1.625rem, 2.2vw, 2rem);
  line-height: 1.15; letter-spacing: -.01em;
  color: var(--ink);
  margin-top: 2em;
  padding-top: .85em;
  border-top: 1px solid var(--rule);
  scroll-margin-top: 1.5rem;
}
.prose h2 + * { margin-top: .75em; }
.prose ul { padding-left: 1.15em; }
.prose li + li { margin-top: .6em; }
.prose li::marker { color: var(--accent); }
.prose strong { font-weight: 600; color: var(--ink); }
.prose a {
  color: var(--ink);
  text-decoration: underline;
  text-decoration-thickness: 1px;
  text-underline-offset: .22em;
  text-decoration-color: var(--muted);
  transition: color .2s, text-decoration-color .2s;
}
.prose a:hover { color: var(--accent); text-decoration-color: var(--accent); }

.support-mail { border-block: 1px solid var(--ink); padding-block: 1.25rem 1.5rem; margin-block: 2.25rem; }
.prose .support-mail > * + * { margin-top: .75rem; }
.support-mail .mono { color: var(--muted); }
.prose .support-mail a.mega { font-size: clamp(1.6rem, 3.3vw, 2.75rem); text-decoration: none; color: var(--ink); }
.support-mail .muted { font-size: .9375rem; }

/* ---------- Reveal on scroll (enabled by /reveal.js only) ---------- */
.reveal-on [data-reveal] {
  opacity: 0;
  transform: translateY(28px);
  transition: opacity 1s var(--ease), transform 1.1s var(--ease);
}
.reveal-on [data-reveal].is-in { opacity: 1; transform: none; }
.reveal-on .d1 { transition-delay: .08s; }
.reveal-on .d2 { transition-delay: .16s; }
.reveal-on .d3 { transition-delay: .24s; }
.reveal-on .d4 { transition-delay: .36s; }

/* ---------- Responsive ---------- */
@media (max-width: 900px) {
  .hero-note { grid-column: 1 / -1; order: 2; }
  .hero-lead { grid-column: 1 / -1; }
  .statement { grid-column: 1 / -1; text-indent: 0; }
  .il-num { grid-column: 1 / span 2; }
  .il-title { grid-column: 3 / -1; }
  .il-desc { grid-column: 3 / -1; margin-top: .6rem; }
  .row-num { grid-column: 1 / span 2; }
  .row-main { grid-column: 3 / -1; }
  .row-plat { grid-column: 3 / span 5; margin-top: 1.25rem; }
  .row-status { grid-column: 8 / span 5; margin-top: 1.25rem; justify-self: end; }
  .row-go { display: none; }
  .contact-kicker { grid-column: 1 / -1; }
  .contact-meta > :nth-child(1), .contact-meta > :nth-child(2) { grid-column: 1 / -1; }
  .foot-mark, .foot-nav { grid-column: 1 / -1; }
  .toc { grid-column: 1 / -1; position: static; margin-bottom: 2.5rem; }
  .prose { grid-column: 1 / -1; }
  .doc-head h1 { grid-column: 1 / -1; }
}
@media (max-width: 560px) {
  .site-nav ul { gap: .4rem 1.1rem; }
  .display { font-size: 13.4vw; line-height: .9; }
  .display .l2 { padding-left: 6%; }
  .display .l3 { padding-left: 34%; }
  .row-plat, .row-status { grid-column: 3 / -1; justify-self: start; }
  .row-status { margin-top: .75rem; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { animation: none !important; transition: none !important; }
  .reveal-on [data-reveal] { opacity: 1; transform: none; }
}

@media print {
  .site-nav, .toc, .skip { display: none; }
  .reveal-on [data-reveal] { opacity: 1; transform: none; }
  body { background: #fff; }
}

/* Support e-mail label: keep it a mono micro-label, not a prose heading */
.prose .support-mail h2 {
  font-family: var(--mono); font-size: .75rem; letter-spacing: .04em;
  color: var(--muted); margin: 0; padding: 0; border: 0;
}
.foot-mark svg path { stroke-width: .7; }
.prose .support-mail + h2 { border-top: 0; padding-top: 0; }