/* ─────────────────────────────────────────────────────────────
   Luis Caetano · Portfolio · Design System
   Tight, neutral, dark. Lime used as accent ONLY in dots / underlines.
   ───────────────────────────────────────────────────────────── */

:root{
  /* surfaces */
  --bg:       oklch(0.17 0.004 250);  /* near-black, cool neutral */
  --bg-2:     oklch(0.20 0.004 250);
  --bg-3:     oklch(0.23 0.004 250);
  --rule:     oklch(0.30 0.006 250);
  --rule-2:   oklch(0.36 0.006 250);

  /* ink */
  --ink:      oklch(0.96 0.005 250);  /* primary */
  --ink-2:    oklch(0.76 0.008 250);  /* secondary */
  --ink-3:    oklch(0.55 0.008 250);  /* tertiary */
  --ink-4:    oklch(0.42 0.008 250);  /* quaternary, for borders/separators */

  /* accent — used sparingly; legacy var name, warm coral */
  --lime:     oklch(0.78 0.14 32);
  --lime-d:   oklch(0.55 0.14 32);   /* on light, when needed */
  --warn:     oklch(0.76 0.16 50);

  /* type */
  --sans:     "Inter", system-ui, -apple-system, sans-serif;
  --mono:     "JetBrains Mono", ui-monospace, "SF Mono", monospace;

  /* sizes */
  --t-xs:     11px;
  --t-sm:     13px;
  --t-base:   15px;
  --t-md:     17px;
  --t-lg:     22px;
  --t-xl:     28px;
  --t-2xl:    36px;
  --t-3xl:    48px;
  --t-4xl:    64px;

  /* spacing */
  --sp-1:     4px;
  --sp-2:     8px;
  --sp-3:     12px;
  --sp-4:     16px;
  --sp-5:     24px;
  --sp-6:     32px;
  --sp-7:     48px;
  --sp-8:     64px;
  --sp-9:     96px;

  /* layout */
  --col-w:    760px;
  --gutter:   32px;
}

*{ box-sizing: border-box; margin: 0; padding: 0; }
html, body{
  background: var(--bg); color: var(--ink);
  font-family: var(--sans); font-size: var(--t-base); line-height: 1.55;
  -webkit-font-smoothing: antialiased;
  font-feature-settings: "ss01", "cv11";
}
body{ overflow-x: hidden; cursor: none; }
html{ scroll-behavior: smooth; }
a{ color: inherit; text-decoration: none; }
::selection{ background: var(--lime); color: var(--bg); }
img{ display: block; max-width: 100%; }

/* layout */
.container{ width: 100%; max-width: 1200px; margin: 0 auto; padding: 0 var(--gutter); }
.col{ max-width: var(--col-w); margin: 0 auto; }

/* ─── custom cursor ─── */
.cursor-dot, .cursor-ring{
  position: fixed; top: 0; left: 0; pointer-events: none; z-index: 9999;
  transform: translate(-50%, -50%);
  transition: width .22s cubic-bezier(.2,.8,.2,1), height .22s cubic-bezier(.2,.8,.2,1),
              opacity .2s, border-color .22s, background .22s;
  mix-blend-mode: difference;
}
.cursor-dot{ width: 5px; height: 5px; background: var(--ink); border-radius: 50%; }
.cursor-ring{ width: 26px; height: 26px; border: 1px solid var(--ink); border-radius: 50%; opacity: .85; }
.cursor-ring.hot{ width: 56px; height: 56px; border-color: var(--lime); }
.cursor-dot.hot{ opacity: 0; }
@media (hover: none){
  .cursor-dot, .cursor-ring{ display: none; }
  body{ cursor: auto; }
}

/* ─── top nav ─── */
.nav{
  position: fixed; top: 0; left: 0; right: 0; z-index: 100;
  display: flex; align-items: center; justify-content: space-between;
  padding: 18px var(--gutter);
  font-family: var(--mono); font-size: var(--t-xs); letter-spacing: .02em;
  color: var(--ink-2);
  background: oklch(0.17 0.004 250 / .72);
  backdrop-filter: saturate(140%) blur(12px);
  -webkit-backdrop-filter: saturate(140%) blur(12px);
  border-bottom: 1px solid var(--rule);
}
.nav .mark{
  display: flex; align-items: center; gap: 10px;
  color: var(--ink); font-weight: 500;
}
.nav .mark .glyph{
  width: 16px; height: 16px; border-radius: 50%; background: var(--lime);
  box-shadow: 0 0 0 3px oklch(0.78 0.14 32 / .15);
}
.nav .links{ display: flex; gap: 28px; align-items: center; }
.nav .links a{
  position: relative; padding: 4px 0;
  transition: color .2s;
}
.nav .links a:hover, .nav .links a.is-active{ color: var(--ink); }
.nav .links a.is-active::after{
  content:""; position:absolute; left:0; right:0; bottom:-2px;
  height: 1px; background: var(--lime);
}
.nav .status{ display: flex; align-items: center; gap: 10px; }
.pulse{
  width: 6px; height: 6px; border-radius: 50%; background: var(--lime);
  box-shadow: 0 0 0 0 oklch(0.78 0.14 32 / .8);
  animation: pulse 2.2s infinite;
}
@keyframes pulse{
  0%{ box-shadow: 0 0 0 0 oklch(0.78 0.14 32 / .7); }
  70%{ box-shadow: 0 0 0 7px oklch(0.78 0.14 32 / 0); }
  100%{ box-shadow: 0 0 0 0 oklch(0.78 0.14 32 / 0); }
}

/* lang toggle */
.lang{
  display: inline-flex; align-items: center; gap: 0;
  border: 1px solid var(--rule); border-radius: 100px;
  padding: 2px; font-family: var(--mono); font-size: 10px;
}
.lang button{
  background: transparent; border: 0; color: var(--ink-3);
  padding: 3px 8px; border-radius: 100px; cursor: none;
  font-family: inherit; font-size: inherit; letter-spacing: .04em;
  text-transform: uppercase; transition: all .2s;
}
.lang button.is-active{ background: var(--ink); color: var(--bg); }

/* ─── page padding / sections ─── */
main{ padding-top: 60px; }
section{ padding: var(--sp-9) 0; }
section + section{ border-top: 1px solid var(--rule); }

/* ─── type primitives ─── */
.eyebrow{
  font-family: var(--mono); font-size: var(--t-xs);
  letter-spacing: .14em; text-transform: uppercase; color: var(--ink-3);
  display: inline-flex; align-items: center; gap: 8px;
}
.eyebrow .dot{
  width: 5px; height: 5px; border-radius: 50%; background: var(--lime);
}
h1, h2, h3{ font-weight: 500; letter-spacing: -.02em; line-height: 1.1; color: var(--ink); }
h1{ font-size: clamp(38px, 5vw, 52px); }
h2{ font-size: var(--t-3xl); letter-spacing: -.025em; }
h3{ font-size: var(--t-xl); }
h4{ font-size: var(--t-md); font-weight: 500; letter-spacing: -.01em; }
p{ color: var(--ink-2); max-width: 60ch; }

/* lime utilities */
u.acc, .acc{
  text-decoration: none;
  background-image: linear-gradient(var(--lime), var(--lime));
  background-position: 0 100%;
  background-repeat: no-repeat;
  background-size: 100% 2px;
  padding-bottom: 1px;
  color: var(--ink);
}
.dot-lime{ display:inline-block; width: 6px; height: 6px; border-radius:50%; background: var(--lime); margin-right: 6px; vertical-align: middle; }
mark.metric{
  background: transparent; color: var(--ink); font-weight: 500;
  border-bottom: 1px dashed var(--lime); padding-bottom: 1px;
}

/* mono inline */
code{
  font-family: var(--mono); font-size: .9em; color: var(--ink);
  background: var(--bg-2); border: 1px solid var(--rule);
  padding: 1px 6px; border-radius: 3px;
}

/* reveal */
.reveal.in{ animation: revealUp .8s cubic-bezier(.2,.8,.2,1) both; }
@keyframes revealUp{
  from{ opacity: 0; transform: translateY(16px); }
  to{ opacity: 1; transform: none; }
}

/* ─── reusable: data list / table ─── */
.facts{
  display: grid; grid-template-columns: 140px 1fr; gap: 12px 24px;
  font-size: var(--t-sm);
  border-top: 1px solid var(--rule); border-bottom: 1px solid var(--rule);
  padding: 20px 0; margin: var(--sp-6) 0;
}
.facts dt{
  font-family: var(--mono); font-size: var(--t-xs);
  letter-spacing: .08em; text-transform: uppercase; color: var(--ink-3);
  padding-top: 2px;
}
.facts dd{ color: var(--ink); }
.facts dd b{ color: var(--ink); font-weight: 500; }

/* ─── reusable: case cards (home) ─── */
.work-list{
  display: flex; flex-direction: column;
  border-top: 1px solid var(--rule);
}
.work-row{
  display: grid; grid-template-columns: 60px 1.6fr 2fr 1.2fr 28px;
  gap: 24px; align-items: baseline;
  padding: 22px 0; border-bottom: 1px solid var(--rule);
  transition: padding .25s ease, background .25s ease;
  position: relative;
}
.work-row:hover{ padding-left: 12px; padding-right: 12px; background: var(--bg-2); }
.work-row .yr{ font-family: var(--mono); font-size: var(--t-xs); color: var(--ink-3); letter-spacing: .08em; }
.work-row .name{ font-size: var(--t-md); font-weight: 500; letter-spacing: -.01em; color: var(--ink); }
.work-row:hover .name{ color: var(--ink); }
.work-row:hover .name::after{
  content:""; position: absolute; bottom: 18px; left: 84px; right: auto;
  width: 24px; height: 1px; background: var(--lime);
}
.work-row .desc{ color: var(--ink-2); font-size: var(--t-sm); line-height: 1.5; }
.work-row .tags{ display: flex; gap: 6px; flex-wrap: wrap; }
.tag{
  font-family: var(--mono); font-size: 10px;
  padding: 3px 7px; border: 1px solid var(--rule); border-radius: 3px;
  color: var(--ink-3); letter-spacing: .05em; text-transform: uppercase;
}
.tag.on{ color: var(--lime); border-color: var(--lime); }
.work-row .arr{ color: var(--ink-3); transition: color .2s, transform .2s; justify-self: end; }
.work-row:hover .arr{ color: var(--lime); transform: translate(3px, -3px); }

/* locked / NDA variant */
.work-row.locked .name{ color: var(--ink-2); }
.work-row.locked:hover .name{ color: var(--ink); }
.work-row.locked .name .redact{
  background: var(--bg-2);
  border: 1px solid var(--rule);
  padding: 1px 6px;
  font-family: var(--mono); font-size: .82em;
  letter-spacing: .04em;
  color: var(--ink-3);
  border-radius: 2px;
  vertical-align: 2px;
}
.work-row.locked .tag.locked-tag{
  color: var(--ink-3);
  border-style: dashed;
  letter-spacing: .08em;
}
.work-row.locked .arr{ font-size: 14px; }
.work-row.locked:hover .arr{ color: var(--ink); transform: none; }

/* ─── reusable: before / after ─── */
.ba{
  display: grid; grid-template-columns: 1fr 1fr;
  gap: 1px; background: var(--rule);
  border: 1px solid var(--rule);
  margin: var(--sp-6) 0;
}
.ba .pane{
  padding: 24px;
  background: var(--bg);
  display: flex; flex-direction: column; gap: 14px;
}
.ba .pane.after{ background: var(--bg-2); position: relative; }
.ba .pane.after::before{
  content: ""; position: absolute; left: 0; top: 0; bottom: 0;
  width: 2px; background: var(--lime);
}
.ba .pane h4{ font-size: var(--t-sm); color: var(--ink); }
.ba .pane .tag-row{ display: flex; gap: 8px; align-items: center; }
.ba .pane .tag-row .lbl{
  font-family: var(--mono); font-size: 10px; letter-spacing: .12em;
  text-transform: uppercase; color: var(--ink-3);
}
.ba .pane.after .lbl{ color: var(--lime); }
.ba .pane ul{ list-style: none; padding: 0; display: flex; flex-direction: column; gap: 8px; }
.ba .pane li{
  font-size: var(--t-sm); color: var(--ink-2); line-height: 1.5;
  padding-left: 18px; position: relative;
}
.ba .pane li::before{
  content: "×"; position: absolute; left: 0; top: -1px;
  font-family: var(--mono); color: var(--warn);
}
.ba .pane.after li::before{ content: "✓"; color: var(--lime); }

/* ─── reusable: outcome line ─── */
.outcome{
  border: 1px solid var(--rule); padding: 28px 24px;
  margin: var(--sp-6) 0;
  display: grid; grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
  gap: 24px;
}
.outcome .o{
  display: flex; flex-direction: column; gap: 4px;
}
.outcome .o .v{
  font-size: 36px; font-weight: 500; letter-spacing: -.02em; color: var(--ink);
}
.outcome .o .v u{
  text-decoration: none;
  background-image: linear-gradient(var(--lime), var(--lime));
  background-position: 0 95%;
  background-repeat: no-repeat;
  background-size: 100% 4px;
  padding-bottom: 1px;
}
.outcome .o .k{
  font-family: var(--mono); font-size: var(--t-xs); letter-spacing: .1em;
  text-transform: uppercase; color: var(--ink-3);
}

/* ─── reusable: principles ─── */
.principles{
  display: grid; gap: 0;
  border-top: 1px solid var(--rule);
}
.principle{
  display: grid; grid-template-columns: 40px 1fr;
  gap: 24px; padding: 18px 0;
  border-bottom: 1px solid var(--rule);
  align-items: baseline;
}
.principle .n{ font-family: var(--mono); font-size: 11px; color: var(--ink-3); letter-spacing: .1em; }
.principle .t{ font-size: var(--t-md); color: var(--ink); }
.principle .t b{ color: var(--ink); font-weight: 500; border-bottom: 1px solid var(--lime); padding-bottom: 1px; }

/* ─── reusable: prev/next case nav ─── */
.case-nav{
  margin-top: var(--sp-9);
  display: grid; grid-template-columns: 1fr 1fr;
  gap: 1px; background: var(--rule);
  border-top: 1px solid var(--rule); border-bottom: 1px solid var(--rule);
}
.case-nav a{
  padding: 28px 24px; background: var(--bg);
  display: flex; flex-direction: column; gap: 6px;
  transition: background .2s;
}
.case-nav a:hover{ background: var(--bg-2); }
.case-nav a.next{ text-align: right; }
.case-nav a .k{ font-family: var(--mono); font-size: 11px; letter-spacing: .12em; text-transform: uppercase; color: var(--ink-3); }
.case-nav a .v{ font-size: var(--t-md); color: var(--ink); font-weight: 500; letter-spacing: -.01em; }
.case-nav a:hover .v{ color: var(--lime); }

/* ─── reusable: footer ─── */
footer{
  border-top: 1px solid var(--rule);
  padding: 28px var(--gutter);
  display: flex; justify-content: space-between; align-items: center;
  font-family: var(--mono); font-size: 11px; color: var(--ink-3);
  letter-spacing: .08em; text-transform: uppercase;
}

/* responsive */
@media (max-width: 900px){
  .work-row{ grid-template-columns: 50px 1fr; gap: 16px; }
  .work-row .desc, .work-row .tags, .work-row .arr{ display: none; }
  .ba{ grid-template-columns: 1fr; }
  .facts{ grid-template-columns: 1fr; gap: 4px 0; }
  .facts dt{ margin-top: 12px; }
  .nav .links{ gap: 18px; }
  .nav .links a:not(.lang-btn){ display: none; }
}