/* Stack Mission: paper, ink and an ember accent. The mark is three stacked bars climbing to the right. */
:root {
  --paper: #F5F1E8;
  --paper-2: #EDE7DA;
  --card: #FFFDF8;
  --ink: #14161F;
  --ink-2: #3A3D4A;
  --muted: #6B6E7B;
  --line: #DCD5C6;
  --ember: #E4572E;
  --ember-ink: #B43D18;
  --moss: #2F5D50;
  --on-ember: #FFFFFF;
  --shadow: 0 1px 0 rgba(20,22,31,.04), 0 12px 32px -12px rgba(20,22,31,.18);
  --display: "Bricolage Grotesque", "Avenir Next", system-ui, sans-serif;
  --serif: "Instrument Serif", Georgia, serif;
  --body: "Figtree", "Avenir Next", system-ui, sans-serif;
  --radius: 18px;
  --wrap: 1180px;
  color-scheme: light;
}
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --paper: #111318; --paper-2: #181B22; --card: #1C1F27; --ink: #F1EDE4; --ink-2: #C9C5BC; --muted: #9195A1;
    --line: #2C303A; --ember: #F06A42; --ember-ink: #FF8A63; --moss: #6FB39F; --on-ember: #14161F;
    --shadow: 0 1px 0 rgba(0,0,0,.2), 0 16px 40px -16px rgba(0,0,0,.6);
    color-scheme: dark;
  }
}
:root[data-theme="dark"] {
  --paper: #111318; --paper-2: #181B22; --card: #1C1F27; --ink: #F1EDE4; --ink-2: #C9C5BC; --muted: #9195A1;
  --line: #2C303A; --ember: #F06A42; --ember-ink: #FF8A63; --moss: #6FB39F; --on-ember: #14161F;
  --shadow: 0 1px 0 rgba(0,0,0,.2), 0 16px 40px -16px rgba(0,0,0,.6);
  color-scheme: dark;
}

*, *::before, *::after { box-sizing: border-box; }
[hidden] { display: none !important; }
html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }
body { margin: 0; background: var(--paper); color: var(--ink); font: 400 17px/1.6 var(--body); -webkit-font-smoothing: antialiased; overflow-x: hidden; }
img, svg, iframe { display: block; max-width: 100%; }
a { color: inherit; }
h1, h2, h3 { font-family: var(--display); line-height: 1.05; letter-spacing: -.025em; margin: 0; text-wrap: balance; }
p { margin: 0; text-wrap: pretty; }
em.s { font-family: var(--serif); font-style: italic; font-weight: 400; letter-spacing: -.01em; }
button { font: inherit; color: inherit; cursor: pointer; }
:focus-visible { outline: 3px solid var(--ember); outline-offset: 3px; border-radius: 6px; }

/* bilingual: every text lives twice, the html[lang] picks which one shows */
html[lang="pt"] [data-l="en"], html[lang="en"] [data-l="pt"] { display: none !important; }

.wrap { width: min(var(--wrap), 100% - 32px); margin-inline: auto; }
.eyebrow { font: 600 13px/1 var(--body); letter-spacing: .16em; text-transform: uppercase; color: var(--ember-ink); }
.lead { font-size: clamp(18px, 1.6vw, 21px); color: var(--ink-2); max-width: 58ch; }

/* ---------- header ---------- */
.top { position: sticky; top: 0; z-index: 20; background: color-mix(in srgb, var(--paper) 86%, transparent); backdrop-filter: blur(14px); -webkit-backdrop-filter: blur(14px); border-bottom: 1px solid transparent; transition: border-color .2s; }
.top.scrolled { border-bottom-color: var(--line); }
.top .wrap { display: flex; align-items: center; gap: 20px; height: 68px; }
.brand { display: flex; align-items: center; gap: 10px; text-decoration: none; font: 800 19px/1 var(--display); letter-spacing: -.02em; }
.brand .mark { width: 30px; height: 30px; }
.brand .mark rect:not(:last-child) { fill: var(--ink); }
.brand b { color: var(--ember); font-weight: 800; }
.nav { display: flex; gap: 4px; margin-left: auto; }
.nav a { text-decoration: none; padding: 8px 12px; border-radius: 999px; font-weight: 500; font-size: 15px; color: var(--ink-2); }
.nav a:hover { background: var(--paper-2); color: var(--ink); }
.lang { display: flex; border: 1px solid var(--line); border-radius: 999px; padding: 3px; background: var(--card); }
.lang button { border: 0; background: none; padding: 5px 10px; border-radius: 999px; font: 600 12px/1 var(--body); letter-spacing: .06em; color: var(--muted); }
.lang button[aria-pressed="true"] { background: var(--ink); color: var(--paper); }
.menu-btn { display: none; border: 1px solid var(--line); background: var(--card); width: 40px; height: 40px; border-radius: 12px; align-items: center; justify-content: center; }
@media (max-width: 860px) {
  .nav { display: none; position: absolute; top: 68px; left: 0; right: 0; flex-direction: column; gap: 0; padding: 8px 16px 16px; background: var(--paper); border-bottom: 1px solid var(--line); }
  .nav.open { display: flex; }
  .nav a { padding: 14px 4px; border-radius: 0; border-bottom: 1px solid var(--line); font-size: 17px; }
  .lang { margin-left: auto; }
  .menu-btn { display: inline-flex; }
}

/* ---------- buttons ---------- */
.btn { display: inline-flex; align-items: center; justify-content: center; gap: 10px; min-height: 50px; padding: 0 22px; border-radius: 999px; font: 600 16px/1 var(--body); text-decoration: none; border: 1.5px solid var(--ink); background: var(--ink); color: var(--paper); transition: transform .15s, background .15s; }
.btn:hover { transform: translateY(-1px); }
.btn.ember { background: var(--ember); border-color: var(--ember); color: var(--on-ember); }
.btn.ghost { background: transparent; color: var(--ink); }
.btn.ghost:hover { background: var(--card); }
.btn.sm { min-height: 40px; padding: 0 16px; font-size: 14px; }
.btn svg { width: 18px; height: 18px; flex: none; }
.btns { display: flex; flex-wrap: wrap; gap: 12px; }

/* ---------- hero ---------- */
.hero { padding: clamp(48px, 9vw, 120px) 0 clamp(56px, 8vw, 104px); position: relative; }
.hero .wrap { display: grid; grid-template-columns: 1.05fr .95fr; gap: clamp(32px, 6vw, 80px); align-items: center; }
.hero h1 { font-size: clamp(44px, 6.6vw, 92px); font-weight: 800; margin: 18px 0 24px; }
.hero h1 em.s { color: var(--ember); font-size: 1.06em; }
.hero .lead { margin-bottom: 34px; }
.stack { position: relative; aspect-ratio: 1 / 1.02; }
.stack .sheet { position: absolute; width: 74%; aspect-ratio: 16 / 10; border-radius: 16px; overflow: hidden; background: var(--card); box-shadow: var(--shadow); border: 1px solid var(--line); text-decoration: none; transition: transform .35s cubic-bezier(.2,.8,.2,1); }
.stack .sheet img { width: 100%; height: 100%; object-fit: cover; }
.stack .sheet span { position: absolute; left: 10px; bottom: 10px; background: rgba(20,22,31,.78); color: #fff; font: 600 12px/1 var(--body); padding: 7px 10px; border-radius: 999px; backdrop-filter: blur(6px); }
.stack .sheet:nth-child(1) { left: 0; top: 0; transform: rotate(-5deg); }
.stack .sheet:nth-child(2) { right: 0; top: 18%; transform: rotate(4deg); }
.stack .sheet:nth-child(3) { left: 4%; top: 42%; transform: rotate(-2deg); }
.stack .sheet:nth-child(4) { right: 3%; top: 62%; transform: rotate(3deg); }
.stack .sheet:hover { transform: rotate(0) scale(1.04); z-index: 5; }
@media (max-width: 860px) {
  .hero .wrap { grid-template-columns: 1fr; }
  .stack { max-width: 520px; width: 90%; margin-inline: auto; }
}

/* ---------- sections ---------- */
section.block { padding: clamp(64px, 9vw, 120px) 0; }
section.alt { background: var(--paper-2); }
.head { display: grid; gap: 16px; margin-bottom: clamp(32px, 5vw, 56px); max-width: 760px; }
.head h2 { font-size: clamp(34px, 4.6vw, 58px); font-weight: 800; }
.head h2 em.s { color: var(--ember); }

.why { display: grid; grid-template-columns: 1fr 1.1fr; gap: clamp(32px, 6vw, 88px); align-items: start; }
.why .quote { font: 400 clamp(26px, 3vw, 38px)/1.2 var(--serif); font-style: italic; letter-spacing: -.01em; border-left: 3px solid var(--ember); padding-left: 24px; }
.why .body { display: grid; gap: 18px; color: var(--ink-2); font-size: 18px; }
.principles { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; margin-top: clamp(40px, 6vw, 72px); }
.principle { background: var(--card); border: 1px solid var(--line); border-radius: var(--radius); padding: 26px; display: grid; gap: 10px; align-content: start; }
.principle .n { font: 800 14px/1 var(--display); color: var(--ember); }
.principle h3 { font-size: 22px; }
.principle p { color: var(--ink-2); font-size: 16px; }
@media (max-width: 860px) { .why, .principles { grid-template-columns: 1fr; } }

/* ---------- project cards ---------- */
.grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: 22px; }
.pcard { display: grid; grid-template-rows: auto 1fr; background: var(--card); border: 1px solid var(--line); border-radius: 22px; overflow: hidden; text-decoration: none; transition: transform .2s, box-shadow .2s; }
.pcard:hover { transform: translateY(-3px); box-shadow: var(--shadow); }
.pcard .shot { aspect-ratio: 16 / 9; background: var(--paper-2); overflow: hidden; border-bottom: 1px solid var(--line); }
.pcard .shot img { width: 100%; height: 100%; object-fit: cover; transition: transform .5s; }
.pcard:hover .shot img { transform: scale(1.03); }
.pcard .info { padding: 22px 24px 24px; display: grid; gap: 10px; align-content: start; }
.pcard h3 { font-size: 26px; }
.pcard p { color: var(--ink-2); font-size: 16px; }
.tags { display: flex; flex-wrap: wrap; gap: 6px; }
.tag { font: 600 12px/1 var(--body); padding: 6px 10px; border-radius: 999px; background: var(--paper-2); color: var(--ink-2); border: 1px solid var(--line); }
.tag.go { background: color-mix(in srgb, var(--moss) 14%, var(--card)); color: var(--moss); border-color: color-mix(in srgb, var(--moss) 30%, transparent); }
.tag.pc { background: color-mix(in srgb, var(--ember) 12%, var(--card)); color: var(--ember-ink); border-color: color-mix(in srgb, var(--ember) 30%, transparent); }
.pcard .more { margin-top: 6px; font-weight: 600; color: var(--ember-ink); display: inline-flex; gap: 6px; align-items: center; }
@media (max-width: 760px) { .grid { grid-template-columns: 1fr; } }

/* ---------- steps ---------- */
.steps { display: grid; grid-template-columns: repeat(4, 1fr); gap: 0; counter-reset: s; border-top: 1px solid var(--line); }
.step { padding: 28px 24px 8px 0; display: grid; gap: 10px; align-content: start; position: relative; }
.step::before { counter-increment: s; content: "0" counter(s); font: 800 44px/1 var(--display); color: var(--ember); letter-spacing: -.04em; }
.step h3 { font-size: 21px; }
.step p { color: var(--ink-2); font-size: 16px; }
@media (max-width: 860px) { .steps { grid-template-columns: 1fr 1fr; gap: 0 20px; } }
@media (max-width: 520px) { .steps { grid-template-columns: 1fr; } }

/* ---------- maker ---------- */
.maker { display: grid; grid-template-columns: auto 1fr; gap: clamp(24px, 4vw, 48px); align-items: center; background: var(--card); border: 1px solid var(--line); border-radius: 26px; padding: clamp(24px, 4vw, 48px); }
.maker .photo { width: clamp(220px, 28vw, 340px); aspect-ratio: 1; border-radius: 20px; overflow: hidden; background: var(--paper-2); }
.maker .photo img { width: 100%; height: 100%; object-fit: cover; display: block; }
.maker h3 { font-size: clamp(26px, 3vw, 34px); margin-bottom: 10px; }
.maker p { color: var(--ink-2); }
.maker p + p { margin-top: 12px; }
.maker p a { color: var(--ember-ink); font-weight: 600; text-decoration-thickness: 1px; text-underline-offset: 3px; }
@media (max-width: 640px) { .maker { grid-template-columns: 1fr; } .maker .photo { width: 100%; max-width: 420px; } }
.join { margin-top: 16px; display: grid; grid-template-columns: 1fr auto; gap: 24px 40px; align-items: center; border: 1.5px dashed var(--line); border-radius: 26px; padding: clamp(24px, 4vw, 40px) clamp(24px, 4vw, 48px); }
.join h3 { font-size: clamp(24px, 2.8vw, 32px); margin: 10px 0 8px; }
.join h3 em.s { color: var(--ember); }
.join p { color: var(--ink-2); max-width: 62ch; }
@media (max-width: 760px) { .join { grid-template-columns: 1fr; } }

/* ---------- CTA ---------- */
.cta { background: var(--ink); color: var(--paper); border-radius: 30px; padding: clamp(36px, 6vw, 72px); display: grid; grid-template-columns: 1.3fr auto; gap: 32px; align-items: center; position: relative; overflow: hidden; }
.cta h2 { font-size: clamp(32px, 4.4vw, 56px); font-weight: 800; }
.cta h2 em.s { color: var(--ember); }
.cta p { color: color-mix(in srgb, var(--paper) 72%, transparent); margin-top: 14px; max-width: 52ch; }
.cta .btn { background: var(--ember); border-color: var(--ember); color: #fff; }
.cta .bars { position: absolute; right: -50px; top: -70px; width: 240px; opacity: .07; pointer-events: none; }
.cta > * { position: relative; z-index: 1; }
.cta > .bars { position: absolute; z-index: 0; }
.cta .bars rect { fill: var(--paper); }
@media (max-width: 760px) { .cta { grid-template-columns: 1fr; } }

/* ---------- support ---------- */
.support { display: grid; grid-template-columns: 1.4fr 1fr; gap: clamp(28px, 5vw, 64px); align-items: center; }
.support h2 { font-size: clamp(32px, 4vw, 50px); font-weight: 800; margin: 14px 0 16px; }
.support h2 em.s { color: var(--ember); }
.costs { list-style: none; padding: 0; margin: 28px 0 0; display: grid; gap: 14px; }
.costs li { display: grid; gap: 2px; padding-left: 18px; border-left: 3px solid var(--line); color: var(--ink-2); font-size: 16px; }
.costs b { color: var(--ink); font-weight: 600; }
.pix { background: var(--card); border: 1px solid var(--line); border-radius: 24px; padding: clamp(24px, 3vw, 36px); display: grid; gap: 14px; box-shadow: var(--shadow); }
.pix-tag { justify-self: start; font: 800 13px/1 var(--display); letter-spacing: .08em; padding: 7px 11px; border-radius: 999px; background: color-mix(in srgb, var(--moss) 16%, var(--card)); color: var(--moss); }
.pix-key code { display: block; font: 600 17px/1.4 ui-monospace, SFMono-Regular, Menlo, monospace; background: var(--paper); border: 1px dashed var(--line); border-radius: 12px; padding: 14px 16px; overflow-wrap: anywhere; }
.pix-name { color: var(--muted); font-size: 14px; }
.pix hr { border: 0; border-top: 1px solid var(--line); margin: 4px 0; width: 100%; }
.pix-note { color: var(--ink-2); font-size: 14.5px; }
@media (max-width: 860px) { .support { grid-template-columns: 1fr; } }

/* ---------- footer ---------- */
.foot { padding: 48px 0 40px; color: var(--muted); font-size: 15px; }
.foot .wrap { display: flex; flex-wrap: wrap; gap: 16px 32px; justify-content: space-between; align-items: center; border-top: 1px solid var(--line); padding-top: 28px; }
.foot nav { display: flex; gap: 20px; flex-wrap: wrap; }
.foot a { text-decoration: none; }
.foot a:hover { color: var(--ink); }

/* ---------- project page ---------- */
.crumb { font-size: 14px; color: var(--muted); padding-top: 28px; }
.crumb a { text-decoration: none; }
.crumb a:hover { color: var(--ink); }
.phero { padding: 28px 0 40px; display: grid; gap: 20px; }
.phero h1 { font-size: clamp(42px, 6vw, 80px); font-weight: 800; }
.phero .lead { max-width: 62ch; }
.preview { position: relative; border-radius: 22px; overflow: hidden; border: 1px solid var(--line); background: #0d0f16; box-shadow: var(--shadow); aspect-ratio: 16 / 9; }
.preview iframe { width: 100%; height: 100%; border: 0; }
.preview .poster { position: absolute; inset: 0; display: grid; place-items: center; background: center/cover no-repeat; border: 0; padding: 0; width: 100%; }
.preview .poster::after { content: ""; position: absolute; inset: 0; background: linear-gradient(180deg, transparent 40%, rgba(10,11,16,.7)); }
.preview .poster > span { position: relative; z-index: 1; display: inline-flex; align-items: center; gap: 10px; background: var(--ember); color: #fff; font: 600 17px/1 var(--body); padding: 16px 24px; border-radius: 999px; box-shadow: 0 10px 30px rgba(0,0,0,.35); }
.preview-bar { display: flex; flex-wrap: wrap; gap: 10px 16px; align-items: center; justify-content: space-between; margin-top: 14px; color: var(--muted); font-size: 14px; }
@media (max-width: 640px) { .preview { aspect-ratio: 4 / 3; } }

.cols { display: grid; grid-template-columns: 1.25fr .75fr; gap: clamp(28px, 5vw, 64px); align-items: start; }
@media (max-width: 860px) { .cols { grid-template-columns: 1fr; } }
.prose { display: grid; gap: 18px; color: var(--ink-2); font-size: 18px; }
.prose h2 { font-size: clamp(26px, 3vw, 34px); color: var(--ink); margin-top: 22px; }
.prose ul { margin: 0; padding-left: 0; list-style: none; display: grid; gap: 12px; }
.prose ul > li { padding-left: 30px; position: relative; }
.prose ul > li::before { content: ""; position: absolute; left: 4px; top: .62em; width: 14px; height: 4px; border-radius: 2px; background: var(--ember); }
.howto { list-style: none; margin: 0; padding: 0; display: grid; gap: 12px; counter-reset: h; }
.howto li { counter-increment: h; display: grid; grid-template-columns: 34px 1fr; gap: 14px; align-items: start; }
.howto li::before { content: counter(h); width: 30px; height: 30px; border-radius: 50%; background: var(--ink); color: var(--paper); display: grid; place-items: center; font: 700 14px/1 var(--display); margin-top: 1px; }
.side { position: sticky; top: 92px; display: grid; gap: 16px; }
.box { background: var(--card); border: 1px solid var(--line); border-radius: var(--radius); padding: 24px; display: grid; gap: 14px; }
.box h3 { font-size: 20px; }
.box p, .box li { font-size: 15.5px; color: var(--ink-2); }
.box ol { margin: 0; padding-left: 20px; display: grid; gap: 8px; }
.box.dark { background: var(--ink); color: var(--paper); border-color: var(--ink); }
.box.dark p { color: color-mix(in srgb, var(--paper) 75%, transparent); }
.box.dark .btn { background: var(--ember); border-color: var(--ember); color: #fff; }
.mode { display: grid; gap: 4px; padding: 14px 16px; border-radius: 14px; background: var(--paper-2); }
.mode b { font-size: 15px; }
.mode span { font-size: 14px; color: var(--muted); }
.others { display: grid; grid-template-columns: repeat(3, 1fr); gap: 16px; }
.others .pcard h3 { font-size: 20px; }
.others .pcard .info { padding: 16px 18px 18px; }
@media (max-width: 860px) { .others { grid-template-columns: 1fr; } }

/* ---------- reveal ---------- */
.rv { opacity: 0; transform: translateY(14px); transition: opacity .7s ease, transform .7s cubic-bezier(.2,.8,.2,1); }
.rv.in { opacity: 1; transform: none; }
@media (prefers-reduced-motion: reduce) { .rv { opacity: 1; transform: none; transition: none; } html { scroll-behavior: auto; } }