/* ─────────────────────────────────────────────────────────────────────────
   pablocosta.dev — engineering-doc aesthetic
   Dark, monospace-forward, no gradients, no orbs.
   ──────────────────────────────────────────────────────────────────────── */

:root {
  /* surfaces */
  --bg:        #0A0B0D;
  --bg-elev:   #101216;
  --bg-soft:   #16191F;
  --line:      rgba(255,255,255,0.07);
  --line-2:    rgba(255,255,255,0.12);

  /* type */
  --fg:        #E6E8EB;
  --fg-mute:   #9AA1AC;
  --fg-dim:    #6A707B;
  --fg-faint:  #4A4F58;

  /* accent — terminal green, refined */
  --accent:    #4ADE80;
  --accent-2:  #34D399;
  --accent-bg: rgba(74,222,128,0.10);

  /* fonts */
  --mono: "JetBrains Mono", ui-monospace, SFMono-Regular, "SF Mono",
          Menlo, Consolas, "Liberation Mono", monospace;
  --sans: "Inter", ui-sans-serif, -apple-system, BlinkMacSystemFont,
          "Segoe UI", Helvetica, Arial, sans-serif;

  /* layout */
  --max:        1120px;
  --gutter:     32px;
  --radius:     10px;
  --radius-sm:  6px;
}

/* background variants (tweak) */
[data-bg="deep"]  { --bg: #050608; --bg-elev: #0B0C10; --bg-soft: #11141A; }
[data-bg="dim"]   { --bg: #0A0B0D; --bg-elev: #101216; --bg-soft: #16191F; }
[data-bg="paper"] { --bg: #14161B; --bg-elev: #1B1E25; --bg-soft: #22262E;
                    --line: rgba(255,255,255,0.09); --line-2: rgba(255,255,255,0.15); }

/* accent variants (tweak) */
[data-accent="green"]   { --accent: #4ADE80; --accent-2: #34D399; --accent-bg: rgba(74,222,128,0.10); }
[data-accent="blue"]    { --accent: #60A5FA; --accent-2: #3B82F6; --accent-bg: rgba(96,165,250,0.10); }
[data-accent="amber"]   { --accent: #FBBF24; --accent-2: #F59E0B; --accent-bg: rgba(251,191,36,0.10); }
[data-accent="magenta"] { --accent: #F472B6; --accent-2: #EC4899; --accent-bg: rgba(244,114,182,0.10); }

* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; }

html { background: var(--bg); color-scheme: dark; }

body {
  font-family: var(--sans);
  font-size: 15.5px;
  line-height: 1.6;
  color: var(--fg);
  background: var(--bg);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  font-feature-settings: "ss01", "cv11";
  text-rendering: optimizeLegibility;
}

/* subtle scanline so true black doesn't read as void */
body::before {
  content: "";
  position: fixed; inset: 0;
  pointer-events: none;
  background:
    radial-gradient(1200px 600px at 50% -10%, rgba(255,255,255,0.025), transparent 60%);
  z-index: 0;
}

::selection { background: var(--accent); color: #000; }

a {
  color: var(--fg);
  text-decoration: none;
  border-bottom: 1px solid var(--line-2);
  transition: color .15s ease, border-color .15s ease;
}
a:hover { color: var(--accent); border-bottom-color: var(--accent); }

code, kbd, .mono { font-family: var(--mono); }

/* ── Layout primitives ──────────────────────────────────────────────────── */

.wrap {
  max-width: var(--max);
  margin: 0 auto;
  padding: 0 var(--gutter);
  position: relative;
  z-index: 1;
}

section { padding: 96px 0; position: relative; }
section + section { border-top: 1px solid var(--line); }

.section-label {
  font-family: var(--mono);
  font-size: 11.5px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--fg-dim);
  display: flex;
  align-items: center;
  gap: 10px;
  margin: 0 0 28px;
}
.section-label::before {
  content: "";
  width: 18px; height: 1px;
  background: var(--accent);
}
.section-label .num {
  color: var(--accent);
  margin-right: 6px;
}

h1, h2, h3 { margin: 0; font-weight: 500; letter-spacing: -0.01em; }
h1 { font-size: clamp(38px, 6vw, 60px); line-height: 1.05; letter-spacing: -0.02em; }
h2 { font-size: clamp(24px, 3vw, 30px); }
h3 { font-size: 18px; }

p { margin: 0 0 1em; text-wrap: pretty; }

/* ── Header ─────────────────────────────────────────────────────────────── */

.site-header {
  position: sticky; top: 0; z-index: 50;
  backdrop-filter: blur(14px) saturate(140%);
  -webkit-backdrop-filter: blur(14px) saturate(140%);
  background: color-mix(in oklab, var(--bg) 78%, transparent);
  border-bottom: 1px solid var(--line);
}
.site-header .wrap {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 56px;
  gap: 24px;
}
.brand {
  display: flex; align-items: center; gap: 10px;
  font-family: var(--mono);
  font-size: 13px;
  color: var(--fg);
  border: 0;
}
.brand:hover { color: var(--accent); }
.brand .mark {
  display: inline-flex; align-items: center; justify-content: center;
  width: 22px; height: 22px;
  border: 1px solid var(--accent);
  color: var(--accent);
  font-weight: 600;
  font-size: 10px;
  border-radius: 4px;
  letter-spacing: 0;
}
.brand .dot {
  width: 6px; height: 6px; border-radius: 50%;
  background: var(--accent);
  box-shadow: 0 0 8px var(--accent);
  animation: pulse 2.4s ease-in-out infinite;
}

.nav {
  display: flex; align-items: center; gap: 22px;
  font-family: var(--mono);
  font-size: 12.5px;
}
.nav a {
  color: var(--fg-mute);
  border: 0;
  display: inline-flex;
  align-items: baseline;
  gap: 4px;
}
.nav a .n { color: var(--fg-faint); font-size: 10.5px; }
.nav a:hover { color: var(--fg); }
.nav a:hover .n { color: var(--accent); }

.clock {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-family: var(--mono);
  font-size: 12px;
  color: var(--fg-dim);
  white-space: nowrap;
}
.clock .city { color: var(--fg-faint); }
.clock .time { color: var(--fg-mute); font-variant-numeric: tabular-nums; }

@media (max-width: 760px) {
  .nav a:not(.always) { display: none; }
  .clock .city { display: none; }
}

/* ── Hero ───────────────────────────────────────────────────────────────── */

.hero { padding: 112px 0 96px; border-top: 0; }
.hero .eyebrow {
  display: inline-flex; align-items: center; gap: 10px;
  font-family: var(--mono);
  font-size: 12px;
  color: var(--fg-mute);
  padding: 6px 12px 6px 10px;
  border: 1px solid var(--line-2);
  border-radius: 999px;
  background: var(--accent-bg);
  margin-bottom: 28px;
  white-space: nowrap;
}
.hero .eyebrow .dot {
  width: 7px; height: 7px; border-radius: 50%;
  background: var(--accent);
  box-shadow: 0 0 10px var(--accent);
  animation: pulse 2.4s ease-in-out infinite;
}
.hero h1 .accent { color: var(--accent); font-weight: 500; }
.hero .role {
  margin-top: 18px;
  font-family: var(--mono);
  font-size: 14px;
  color: var(--fg-mute);
  letter-spacing: 0;
}
.hero .role .sep { color: var(--fg-faint); margin: 0 8px; }
.hero .oneliner {
  margin-top: 28px;
  font-size: clamp(17px, 2vw, 19px);
  color: var(--fg);
  max-width: 580px;
  line-height: 1.55;
}
.hero .oneliner .hl {
  color: var(--accent);
  border-bottom: 1px dashed color-mix(in oklab, var(--accent) 60%, transparent);
  padding-bottom: 1px;
}
.hero .ctas {
  margin-top: 36px;
  display: flex; gap: 12px; flex-wrap: wrap;
}

/* hero — terminal variant */
.hero-term {
  font-family: var(--mono);
  font-size: 14px;
  line-height: 1.7;
  background: var(--bg-elev);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 22px 26px;
  max-width: 720px;
  margin-bottom: 32px;
}
.hero-term .row { display: block; }
.hero-term .prompt { color: var(--accent); user-select: none; }
.hero-term .cmd { color: var(--fg); }
.hero-term .out { color: var(--fg-mute); padding-left: 16px; display: block; }
.hero-term .out .k { color: var(--fg-faint); display: inline-block; min-width: 92px; }
.hero-term .out .v { color: var(--fg); }
.hero-term .out .v.green { color: var(--accent); }
.hero-term .caret {
  display: inline-block; width: 8px; height: 1em;
  background: var(--accent); vertical-align: -2px;
  animation: blink 1s steps(1) infinite;
}

/* hero — status/metadata variant */
.hero-status {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 64px;
  align-items: end;
}
@media (max-width: 820px) { .hero-status { grid-template-columns: 1fr; gap: 40px; } }
.meta-block {
  font-family: var(--mono);
  font-size: 12.5px;
  line-height: 1.9;
  color: var(--fg-mute);
  border-left: 1px solid var(--accent);
  padding: 4px 0 4px 20px;
  min-width: 220px;
}
.meta-block .k { color: var(--fg-faint); display: inline-block; min-width: 90px; }
.meta-block .v { color: var(--fg); }
.meta-block .v.accent { color: var(--accent); }

/* ── Buttons ────────────────────────────────────────────────────────────── */

.btn {
  display: inline-flex; align-items: center; gap: 10px;
  height: 40px;
  padding: 0 18px;
  font-family: var(--mono);
  font-size: 13px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--line-2);
  background: transparent;
  color: var(--fg);
  cursor: pointer;
  transition: all .15s ease;
  text-decoration: none;
  white-space: nowrap;
  line-height: 1;
}
.btn:hover { border-color: var(--fg-mute); color: var(--fg); }
.btn.primary {
  background: var(--accent);
  color: #062012;
  border-color: var(--accent);
  font-weight: 600;
}
.btn.primary:hover {
  background: color-mix(in oklab, var(--accent) 88%, white);
  border-color: var(--accent);
}
.btn .arr {
  transition: transform .15s ease;
  font-family: var(--mono);
  font-size: 14px;
  line-height: 1;
}
.btn:hover .arr { transform: translateX(3px); }

/* ── Tags / chips ───────────────────────────────────────────────────────── */

.tags { display: flex; flex-wrap: wrap; gap: 6px; }
.tag {
  font-family: var(--mono);
  font-size: 11.5px;
  letter-spacing: 0;
  color: var(--fg-mute);
  padding: 3px 8px;
  border: 1px solid var(--line);
  border-radius: 4px;
  background: var(--bg-elev);
  white-space: nowrap;
}
.tag.accent {
  color: var(--accent);
  border-color: color-mix(in oklab, var(--accent) 35%, transparent);
  background: var(--accent-bg);
}

.badge {
  display: inline-flex; align-items: center; gap: 6px;
  font-family: var(--mono);
  font-size: 10.5px;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--accent);
  padding: 3px 7px;
  border: 1px solid color-mix(in oklab, var(--accent) 35%, transparent);
  background: var(--accent-bg);
  border-radius: 4px;
}
.badge::before {
  content: "";
  width: 5px; height: 5px; border-radius: 50%;
  background: var(--accent);
  box-shadow: 0 0 6px var(--accent);
}
.badge.neutral {
  color: var(--fg-mute);
  border-color: var(--line-2);
  background: var(--bg-soft);
}
.badge.neutral::before { background: var(--fg-mute); box-shadow: none; }

/* ── Project grid ───────────────────────────────────────────────────────── */

.project-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 20px;
}
.project-grid > :first-child { grid-column: 1 / -1; }
@media (max-width: 760px) { .project-grid { grid-template-columns: 1fr; } }

.card {
  position: relative;
  background: var(--bg-elev);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 24px 26px;
  transition: border-color .2s ease, transform .2s ease;
  display: flex; flex-direction: column;
  gap: 16px;
}
.card:hover { border-color: var(--line-2); }

.card .card-head {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 16px;
}
.card .card-title {
  font-family: var(--mono);
  font-size: 17px;
  font-weight: 500;
  letter-spacing: -0.005em;
  color: var(--fg);
  display: flex; align-items: baseline; gap: 10px;
}
.card .card-title .n {
  color: var(--fg-faint);
  font-size: 12px;
  font-variant-numeric: tabular-nums;
}
.card .problem {
  font-size: 14.5px;
  color: var(--fg-mute);
  margin: 0;
  line-height: 1.55;
}
.card .meta-line {
  display: flex; flex-wrap: wrap; gap: 16px;
  font-family: var(--mono);
  font-size: 12px;
  color: var(--fg-dim);
}
.card .meta-line span { display: inline-flex; align-items: center; gap: 6px; }
.card .meta-line .k { color: var(--fg-faint); }
.decisions {
  margin: 0;
  padding: 0;
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 8px;
  font-size: 13.5px;
  line-height: 1.5;
  color: var(--fg-mute);
}
.decisions li {
  position: relative;
  padding-left: 16px;
}
.decisions li::before {
  content: "//";
  position: absolute;
  left: 0;
  color: var(--fg-faint);
  font-family: var(--mono);
  font-size: 10px;
}
.card .links {
  display: flex; gap: 14px;
  font-family: var(--mono);
  font-size: 12.5px;
  margin-top: auto;
  padding-top: 4px;
}
.card .links a {
  color: var(--fg-mute);
  border: 0;
  display: inline-flex;
  align-items: center;
  gap: 6px;
}
.card .links a:hover { color: var(--accent); }
.card .links a .arr { transition: transform .15s ease; }
.card .links a:hover .arr { transform: translate(2px, -2px); }
.card .links .sep { color: var(--fg-faint); }

/* ASCII glyph */
.glyph {
  font-family: var(--mono);
  font-size: 10.5px;
  line-height: 1.25;
  color: var(--accent);
  opacity: 0.85;
  white-space: pre;
  background: var(--bg);
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  padding: 12px 14px;
  overflow-x: auto;
}

/* client work — smaller cards */
.client-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 16px;
}
@media (max-width: 760px) { .client-grid { grid-template-columns: 1fr; } }
.client-card {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 20px;
  padding: 18px 20px;
  background: var(--bg-elev);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  transition: border-color .2s ease;
}
.client-card:hover { border-color: var(--line-2); }
.client-card .l { display: flex; flex-direction: column; gap: 6px; min-width: 0; }
.client-card .name {
  font-family: var(--mono);
  font-size: 14px;
  color: var(--fg);
  font-weight: 500;
}
.client-card .desc {
  font-size: 13px;
  color: var(--fg-mute);
}

/* ── Stack section (code-block) ─────────────────────────────────────────── */

.codeblock {
  background: var(--bg-elev);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  font-family: var(--mono);
  font-size: 13.5px;
  line-height: 1.85;
  overflow: hidden;
}
.codeblock .cb-head {
  display: flex; align-items: center; justify-content: space-between;
  padding: 10px 16px;
  border-bottom: 1px solid var(--line);
  background: var(--bg-soft);
  font-size: 11.5px;
  color: var(--fg-faint);
  letter-spacing: 0.04em;
  text-transform: uppercase;
}
.codeblock .cb-dots { display: flex; gap: 6px; }
.codeblock .cb-dots i {
  width: 8px; height: 8px; border-radius: 50%;
  background: var(--fg-faint);
  display: inline-block;
}
.codeblock pre {
  margin: 0;
  padding: 22px 24px;
  overflow-x: auto;
  color: var(--fg);
}
.codeblock .ln { color: var(--fg-faint); padding-right: 14px; user-select: none; display: inline-block; width: 22px; text-align: right; }
.codeblock .kw { color: var(--accent); }
.codeblock .var { color: var(--fg); }
.codeblock .op { color: var(--fg-dim); }
.codeblock .str { color: #E6E8EB; }
.codeblock .str::before, .codeblock .str::after { content: '"'; color: var(--fg-faint); }
.codeblock .cm { color: var(--fg-faint); font-style: italic; }
.codeblock .ind { display: inline-block; width: 28px; }

.stack-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
}
@media (max-width: 820px) { .stack-grid { grid-template-columns: 1fr; } }

/* ── Evaluation ─────────────────────────────────────────────────────────── */

.eval-grid {
  display: grid;
  grid-template-columns: 1.3fr 1fr;
  gap: 48px;
  align-items: start;
}
@media (max-width: 820px) { .eval-grid { grid-template-columns: 1fr; gap: 28px; } }
.eval-grid .lead {
  font-size: clamp(18px, 2vw, 21px);
  line-height: 1.55;
  color: var(--fg);
  max-width: 640px;
}
.eval-grid p:not(.lead) {
  color: var(--fg-mute);
  max-width: 620px;
}
.eval-list {
  font-family: var(--mono);
  font-size: 12.5px;
  line-height: 1.9;
  color: var(--fg-mute);
  background: var(--bg-elev);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 20px 22px;
}
.eval-list div { display: flex; gap: 16px; }
.eval-list .k { color: var(--fg-faint); min-width: 76px; }
.eval-list .v { color: var(--fg); }

/* ── About ──────────────────────────────────────────────────────────────── */

.about-grid {
  display: grid;
  grid-template-columns: 1fr 1.4fr;
  gap: 64px;
  align-items: start;
}
@media (max-width: 820px) { .about-grid { grid-template-columns: 1fr; gap: 32px; } }
.about-grid p { font-size: 16px; color: var(--fg); }
.about-grid p + p { margin-top: 1.1em; }
.about-grid .facts {
  font-family: var(--mono);
  font-size: 12.5px;
  line-height: 2;
  color: var(--fg-mute);
}
.about-grid .facts dt { color: var(--fg-faint); }
.about-grid .facts dd {
  margin: 0 0 12px;
  color: var(--fg);
}

/* ── Contact ────────────────────────────────────────────────────────────── */

.contact {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 32px;
}
@media (max-width: 820px) { .contact { grid-template-columns: 1fr; } }
.contact .lead {
  font-size: clamp(22px, 2.8vw, 28px);
  line-height: 1.3;
  color: var(--fg);
  max-width: 480px;
  letter-spacing: -0.01em;
}
.contact .lead .accent { color: var(--accent); }

.contact-links {
  display: flex; flex-direction: column;
  font-family: var(--mono);
}
.contact-link {
  display: flex; align-items: center; justify-content: space-between;
  padding: 18px 0;
  border-bottom: 1px solid var(--line);
  font-size: 14px;
  color: var(--fg);
  border-top: 0;
  border-left: 0; border-right: 0;
  transition: padding .15s ease;
}
.contact-link:first-child { border-top: 1px solid var(--line); }
.contact-link:hover { color: var(--accent); padding-left: 6px; }
.contact-link .k { color: var(--fg-faint); font-size: 11.5px; min-width: 80px; }
.contact-link .v { flex: 1; padding: 0 12px; word-break: break-all; }
.contact-link .arr { color: var(--fg-faint); transition: transform .15s ease, color .15s ease; }
.contact-link:hover .arr { transform: translateX(3px); color: var(--accent); }

.copied {
  font-family: var(--mono);
  font-size: 11px;
  color: var(--accent);
  margin-left: 8px;
  opacity: 0; transition: opacity .2s ease;
}
.copied.on { opacity: 1; }

/* ── Footer ─────────────────────────────────────────────────────────────── */

.site-footer {
  border-top: 1px solid var(--line);
  padding: 28px 0 40px;
  font-family: var(--mono);
  font-size: 11.5px;
  color: var(--fg-dim);
}
.site-footer .wrap {
  display: flex; align-items: center; justify-content: space-between;
  gap: 16px; flex-wrap: wrap;
}
.site-footer .l { display: flex; gap: 18px; flex-wrap: wrap; }
.site-footer .l span { white-space: nowrap; }
.site-footer .r { color: var(--fg-faint); white-space: nowrap; }

/* ── Animations ─────────────────────────────────────────────────────────── */

@keyframes pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.35; }
}
@keyframes blink {
  0%, 49% { opacity: 1; }
  50%, 100% { opacity: 0; }
}

/* fade-in on scroll — opt-in only when JS adds .js-reveal to <html>,
   so no-JS visitors still see all content */
.js-reveal .reveal {
  opacity: 0;
  transform: translateY(8px);
  transition: opacity .6s ease, transform .6s ease;
}
.js-reveal .reveal.in {
  opacity: 1;
  transform: none;
}
@media (prefers-reduced-motion: reduce) {
  .reveal { opacity: 1; transform: none; transition: none; }
  .brand .dot, .hero .eyebrow .dot, .badge::before, .hero-term .caret { animation: none; }
}

/* ── Scrollbar ──────────────────────────────────────────────────────────── */
::-webkit-scrollbar { width: 10px; height: 10px; }
::-webkit-scrollbar-track { background: var(--bg); }
::-webkit-scrollbar-thumb {
  background: var(--bg-soft);
  border: 2px solid var(--bg);
  border-radius: 6px;
}
::-webkit-scrollbar-thumb:hover { background: var(--line-2); }

/* ── Responsive tightening ──────────────────────────────────────────────── */
@media (max-width: 600px) {
  :root { --gutter: 20px; }
  section { padding: 72px 0; }
  .hero { padding: 72px 0 64px; }
  .card { padding: 20px 22px; }
  .codeblock pre { padding: 18px 18px; font-size: 12.5px; }
  .codeblock .ind { width: 20px; }
  body { font-size: 15px; }
}