/* ——————————————————————————————————————————
   Guilherme Antunes — Portfolio 2026
   Concept: "Signal in the Noise" · editorial dark
   —————————————————————————————————————————— */

:root {
  --bg:        #0a0b0d;
  --bg-2:      #0f1114;
  --bg-3:      #14171c;
  --surface:   #161a20;
  --border:    rgba(237, 232, 222, 0.08);
  --border-2:  rgba(237, 232, 222, 0.14);
  --fg:        #ede8de;
  --fg-2:      #b9b4a7;
  --fg-3:      #7b7669;
  --fg-4:      #4a463d;
  --accent:    oklch(0.82 0.16 82);   /* warm amber/gold */
  --accent-2:  oklch(0.72 0.14 82);
  --glow:      oklch(0.82 0.16 82 / 0.35);

  --serif:  "Instrument Serif", "Times New Roman", serif;
  --sans:   "Geist", ui-sans-serif, system-ui, -apple-system, "Helvetica Neue", sans-serif;
  --mono:   "Geist Mono", ui-monospace, "JetBrains Mono", Menlo, monospace;

  --pad:     clamp(20px, 3.5vw, 52px);
  --ease:    cubic-bezier(0.2, 0.8, 0.2, 1);
  --ease-in: cubic-bezier(0.7, 0, 0.84, 0);
}

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

html, body {
  background: var(--bg);
  color: var(--fg);
  font-family: var(--sans);
  font-size: 16px;
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
  scroll-behavior: smooth;
}

body {
  background-image:
    radial-gradient(1200px 800px at 85% -10%, color-mix(in oklab, var(--accent) 8%, transparent), transparent 60%),
    radial-gradient(900px 700px at -10% 30%, rgba(80, 90, 120, 0.08), transparent 55%);
  background-attachment: fixed;
}

/* grain overlay */
body::before {
  content: "";
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 100;
  opacity: 0.06;
  mix-blend-mode: overlay;
  background-image: url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' width='220' height='220'><filter id='n'><feTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='2' stitchTiles='stitch'/></filter><rect width='100%' height='100%' filter='url(%23n)' opacity='0.9'/></svg>");
}

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

/* ———————————————————— Typography ———————————————————— */

.display {
  font-family: var(--serif);
  font-weight: 400;
  letter-spacing: -0.02em;
  line-height: 0.92;
  font-feature-settings: "ss01", "liga";
}
.mono {
  font-family: var(--mono);
  font-size: 0.72rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--fg-3);
}
.eyebrow {
  font-family: var(--mono);
  font-size: 0.7rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--fg-3);
}

/* ———————————————————— Layout primitives ———————————————————— */

.container {
  width: 100%;
  padding-inline: var(--pad);
  margin-inline: auto;
  max-width: 1640px;
}

.section {
  padding-block: clamp(80px, 12vh, 160px);
  position: relative;
}

.section-head {
  display: grid;
  grid-template-columns: 120px 1fr;
  gap: 40px;
  align-items: start;
  padding-bottom: 56px;
  border-bottom: 1px solid var(--border);
  margin-bottom: 56px;
}
.section-head .num {
  font-family: var(--mono);
  font-size: 0.7rem;
  color: var(--fg-4);
  letter-spacing: 0.15em;
  padding-top: 10px;
}
.section-head .title {
  font-family: var(--serif);
  font-size: clamp(2.4rem, 6vw, 5rem);
  line-height: 0.96;
  letter-spacing: -0.02em;
}
.section-head .title em {
  font-style: italic;
  color: var(--accent);
}
.section-head .desc {
  grid-column: 2;
  max-width: 620px;
  color: var(--fg-2);
  font-size: 1rem;
  line-height: 1.55;
  margin-top: 20px;
}

@media (max-width: 720px) {
  .section-head { grid-template-columns: 1fr; gap: 16px; }
  .section-head .desc { grid-column: 1; }
}

/* ———————————————————— Nav ———————————————————— */

.nav {
  position: fixed;
  top: 16px;
  left: 50%;
  transform: translateX(-50%);
  z-index: 80;
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 8px 10px 8px 18px;
  border: 1px solid var(--border-2);
  background: rgba(10, 11, 13, 0.72);
  backdrop-filter: blur(18px) saturate(140%);
  -webkit-backdrop-filter: blur(18px) saturate(140%);
  border-radius: 100px;
  font-family: var(--mono);
  font-size: 0.72rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}
.nav .brand {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  color: var(--fg);
  padding-right: 10px;
  border-right: 1px solid var(--border-2);
}
.nav .brand .dot {
  width: 6px; height: 6px; border-radius: 50%;
  background: var(--accent);
  box-shadow: 0 0 12px var(--glow);
  animation: pulse 2.4s var(--ease) infinite;
}
.nav a {
  color: var(--fg-2);
  text-decoration: none;
  padding: 6px 10px;
  border-radius: 100px;
  transition: color 0.2s var(--ease), background 0.2s var(--ease);
}
.nav a:hover { color: var(--fg); background: rgba(237,232,222,0.04); }
.nav .time {
  color: var(--fg-3);
  padding: 6px 12px 6px 10px;
  border-left: 1px solid var(--border-2);
  min-width: 92px;
  text-align: right;
}
@media (max-width: 720px) {
  .nav .links, .nav .time { display: none; }
}

@keyframes pulse {
  0%, 100% { opacity: 1; transform: scale(1); }
  50%      { opacity: 0.45; transform: scale(0.85); }
}

/* ———————————————————— Hero ———————————————————— */

.hero {
  min-height: 100vh;
  padding-top: 110px;
  padding-bottom: 40px;
  position: relative;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
}
.hero-meta {
  display: grid;
  grid-template-columns: 1fr 1fr 1fr 1fr;
  gap: 40px;
  padding-bottom: 28px;
  border-bottom: 1px solid var(--border);
}
.hero-meta > div > .mono { display: block; margin-bottom: 6px; color: var(--fg-4); }
.hero-meta > div > .val { color: var(--fg); font-size: 0.92rem; }
.hero-meta .avail {
  color: var(--accent);
  display: inline-flex; align-items: center; gap: 8px;
}
.hero-meta .avail::before {
  content: ""; width: 6px; height: 6px; border-radius: 50%;
  background: var(--accent);
  box-shadow: 0 0 10px var(--glow);
  animation: pulse 2.4s var(--ease) infinite;
}

.hero-type {
  padding-block: clamp(32px, 6vh, 72px);
  position: relative;
}
.hero-type h1 {
  font-family: var(--serif);
  font-size: clamp(3.8rem, 13vw, 12rem);
  line-height: 0.88;
  letter-spacing: -0.035em;
  font-weight: 400;
}
.hero-type h1 .line { display: block; overflow: hidden; }
.hero-type h1 .line span {
  display: inline-block;
  transform: translateY(110%);
  transition: transform 1.1s var(--ease);
}
.loaded .hero-type h1 .line span { transform: translateY(0); }
.loaded .hero-type h1 .line:nth-child(2) span { transition-delay: 0.1s; }
.loaded .hero-type h1 .line:nth-child(3) span { transition-delay: 0.2s; }

.hero-type h1 em {
  font-style: italic;
  color: var(--accent);
}
.hero-type h1 .slash {
  color: var(--fg-4);
  font-style: normal;
}

.hero-foot {
  display: grid;
  grid-template-columns: 1fr auto auto;
  align-items: end;
  gap: 40px;
  padding-top: 28px;
  border-top: 1px solid var(--border);
}
.hero-foot .tagline {
  max-width: 520px;
  font-size: 1.05rem;
  color: var(--fg-2);
  line-height: 1.5;
}
.hero-foot .tagline strong { color: var(--fg); font-weight: 500; }
.hero-foot .scroll {
  display: inline-flex; align-items: center; gap: 10px;
  color: var(--fg-3);
  font-family: var(--mono);
  font-size: 0.7rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
}
.hero-foot .scroll .ar {
  width: 36px; height: 1px; background: var(--fg-3); position: relative;
}
.hero-foot .scroll .ar::after {
  content: ""; position: absolute; right: 0; top: -3px;
  width: 8px; height: 8px;
  border-right: 1px solid var(--fg-3);
  border-bottom: 1px solid var(--fg-3);
  transform: rotate(-45deg);
}

/* orbit visual */
.orbit {
  position: absolute;
  right: -120px;
  top: 50%;
  transform: translateY(-50%);
  width: 560px;
  height: 560px;
  pointer-events: none;
  opacity: 0.55;
  z-index: 0;
}
.orbit .ring {
  position: absolute; inset: 0;
  border-radius: 50%;
  border: 1px solid var(--border-2);
}
.orbit .ring.r2 { inset: 60px; opacity: 0.6; }
.orbit .ring.r3 { inset: 120px; opacity: 0.4; }
.orbit .ring.r4 { inset: 180px; opacity: 0.25; }
.orbit .node {
  position: absolute; top: 50%; left: 50%;
  width: 8px; height: 8px;
  background: var(--accent);
  border-radius: 50%;
  box-shadow: 0 0 16px var(--glow);
  transform-origin: 0 0;
}
.orbit .core {
  position: absolute; top: 50%; left: 50%;
  width: 120px; height: 120px;
  transform: translate(-50%, -50%);
  border-radius: 50%;
  background: radial-gradient(circle, color-mix(in oklab, var(--accent) 45%, transparent), transparent 70%);
  filter: blur(20px);
}
@keyframes spin {
  to { transform: rotate(360deg); }
}
.orbit .spin { animation: spin 60s linear infinite; position: absolute; inset: 0; }
.orbit .spin.s2 { animation-duration: 42s; animation-direction: reverse; }
.orbit .spin.s3 { animation-duration: 28s; }

.hero-type, .hero-meta, .hero-foot { position: relative; z-index: 1; }

@media (max-width: 1100px) { .orbit { display: none; } }
@media (max-width: 720px) {
  .hero-meta { grid-template-columns: 1fr 1fr; gap: 20px; }
  .hero-foot { grid-template-columns: 1fr; }
}

/* ———————————————————— Marquee ———————————————————— */

.marquee {
  border-block: 1px solid var(--border);
  padding-block: 28px;
  overflow: hidden;
  position: relative;
  background: linear-gradient(180deg, transparent, rgba(255,255,255,0.01), transparent);
}
.marquee::before, .marquee::after {
  content: "";
  position: absolute; top: 0; bottom: 0; width: 180px;
  z-index: 2; pointer-events: none;
}
.marquee::before { left: 0;  background: linear-gradient(90deg, var(--bg), transparent); }
.marquee::after  { right: 0; background: linear-gradient(270deg, var(--bg), transparent); }

.marquee-track {
  display: flex;
  gap: 80px;
  white-space: nowrap;
  animation: slide 50s linear infinite;
  align-items: center;
}
.marquee-track span {
  font-family: var(--serif);
  font-style: italic;
  font-size: 2rem;
  color: var(--fg-3);
  display: inline-flex; align-items: center; gap: 80px;
}
.marquee-track span::after {
  content: "✦";
  font-family: var(--sans);
  font-style: normal;
  color: var(--accent);
  font-size: 0.8rem;
}
@keyframes slide {
  to { transform: translateX(-50%); }
}

/* ———————————————————— About ———————————————————— */

.about {
  display: grid;
  grid-template-columns: 1.1fr 1fr;
  gap: 80px;
}
.about .lead {
  font-family: var(--serif);
  font-size: clamp(1.8rem, 3vw, 2.6rem);
  line-height: 1.18;
  letter-spacing: -0.015em;
  color: var(--fg);
  margin-bottom: 40px;
}
.about .lead em { font-style: italic; color: var(--accent); }
.about .body {
  color: var(--fg-2);
  font-size: 1.02rem;
  line-height: 1.65;
  max-width: 48ch;
}
.about .body p + p { margin-top: 18px; }

.stat-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1px;
  background: var(--border);
  border: 1px solid var(--border);
}
.stat {
  padding: 28px 24px;
  background: var(--bg);
  display: flex;
  flex-direction: column;
  gap: 6px;
  min-height: 150px;
  justify-content: space-between;
}
.stat .n {
  font-family: var(--serif);
  font-size: 3rem;
  line-height: 1;
  letter-spacing: -0.02em;
}
.stat .n sub { font-size: 1rem; color: var(--accent); vertical-align: super; margin-left: 4px; font-family: var(--mono); }
.stat .l { color: var(--fg-3); font-size: 0.82rem; }

@media (max-width: 900px) {
  .about { grid-template-columns: 1fr; gap: 40px; }
}

/* ———————————————————— Work ———————————————————— */

.work-list {
  display: flex;
  flex-direction: column;
  border-top: 1px solid var(--border);
}
.work-row {
  display: grid;
  grid-template-columns: 60px 2.2fr 1.4fr 1fr 40px;
  gap: 24px;
  align-items: center;
  padding: 28px 8px;
  border-bottom: 1px solid var(--border);
  cursor: pointer;
  position: relative;
  transition: padding 0.4s var(--ease), background 0.4s var(--ease);
}
.work-row:hover {
  padding-inline: 20px;
  background: linear-gradient(90deg, transparent, rgba(237,232,222,0.02), transparent);
}
.work-row .idx   { font-family: var(--mono); color: var(--fg-4); font-size: 0.78rem; }
.work-row .name  {
  font-family: var(--serif);
  font-size: clamp(1.5rem, 2.6vw, 2.4rem);
  letter-spacing: -0.01em;
  line-height: 1;
  transition: color 0.3s var(--ease), transform 0.5s var(--ease);
}
.work-row .name em { font-style: italic; color: var(--accent); }
.work-row:hover .name { transform: translateX(6px); }
.work-row .cat   { color: var(--fg-2); font-size: 0.9rem; }
.work-row .year  { font-family: var(--mono); color: var(--fg-3); font-size: 0.78rem; text-align: right; }
.work-row .arrow {
  justify-self: end;
  width: 24px; height: 24px;
  border-radius: 50%;
  border: 1px solid var(--border-2);
  display: grid; place-items: center;
  color: var(--fg-3);
  font-size: 10px;
  transition: all 0.3s var(--ease);
}
.work-row:hover .arrow {
  background: var(--accent);
  border-color: var(--accent);
  color: #000;
  transform: rotate(-45deg);
}

/* hover preview */
.work-preview {
  position: fixed;
  pointer-events: none;
  width: 360px;
  height: 240px;
  border-radius: 8px;
  overflow: hidden;
  z-index: 60;
  opacity: 0;
  transform: translate(-50%, -50%) scale(0.92);
  transition: opacity 0.35s var(--ease), transform 0.5s var(--ease);
  box-shadow:
    0 40px 80px rgba(0,0,0,0.6),
    0 0 0 1px var(--border-2),
    0 0 60px color-mix(in oklab, var(--accent) 30%, transparent);
  background: var(--bg-2);
}
.work-preview.active { opacity: 1; transform: translate(-50%, -50%) scale(1); }
.work-preview img { width: 100%; height: 100%; object-fit: cover; }

@media (max-width: 820px) {
  .work-row { grid-template-columns: 32px 1fr auto; }
  .work-row .cat, .work-row .arrow { display: none; }
  .work-preview { display: none; }
}

/* ———————————————————— Stack ———————————————————— */

.stack {
  display: grid;
  grid-template-columns: 1fr 2fr;
  gap: 64px;
  align-items: start;
}
.stack .filters {
  display: flex;
  flex-direction: column;
  gap: 2px;
  position: sticky;
  top: 90px;
}
.stack .filter {
  display: flex; align-items: center; justify-content: space-between;
  padding: 14px 16px;
  border: 1px solid transparent;
  border-left: 1px solid var(--border);
  background: transparent;
  color: var(--fg-2);
  font-family: var(--mono);
  font-size: 0.72rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  cursor: pointer;
  text-align: left;
  transition: all 0.3s var(--ease);
}
.stack .filter:hover { color: var(--fg); border-left-color: var(--fg-3); padding-left: 20px; }
.stack .filter.active {
  color: var(--accent);
  border-left-color: var(--accent);
  background: linear-gradient(90deg, color-mix(in oklab, var(--accent) 8%, transparent), transparent);
  padding-left: 20px;
}
.stack .filter .n {
  font-size: 0.62rem;
  color: var(--fg-4);
}
.stack .filter.active .n { color: var(--accent); }

.chips {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}
.chip {
  padding: 10px 16px;
  border: 1px solid var(--border-2);
  border-radius: 100px;
  font-family: var(--mono);
  font-size: 0.74rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--fg-2);
  background: var(--bg-2);
  transition: all 0.4s var(--ease);
  cursor: default;
  position: relative;
}
.chip[data-level="primary"] {
  border-color: color-mix(in oklab, var(--accent) 50%, var(--border-2));
  color: var(--fg);
  box-shadow: inset 0 0 0 1px color-mix(in oklab, var(--accent) 20%, transparent);
}
.chip[data-level="primary"]::before {
  content: ""; width: 6px; height: 6px; border-radius: 50%;
  background: var(--accent); display: inline-block;
  margin-right: 8px; vertical-align: middle;
  box-shadow: 0 0 8px var(--glow);
}
.chip:hover { transform: translateY(-2px); border-color: var(--fg-3); color: var(--fg); }

@media (max-width: 900px) {
  .stack { grid-template-columns: 1fr; gap: 32px; }
  .stack .filters { position: static; flex-direction: row; overflow-x: auto; }
  .stack .filter { white-space: nowrap; border: 1px solid var(--border); border-radius: 100px; }
  .stack .filter.active { border-color: var(--accent); }
}

/* ———————————————————— Experience ———————————————————— */

.timeline {
  position: relative;
  padding-left: 24px;
}
.timeline::before {
  content: "";
  position: absolute; left: 0; top: 8px; bottom: 8px;
  width: 1px; background: var(--border-2);
}
.tl-item {
  position: relative;
  padding: 24px 0 24px 40px;
  border-bottom: 1px solid var(--border);
  display: grid;
  grid-template-columns: 1fr 180px;
  gap: 40px;
  align-items: baseline;
}
.tl-item:last-child { border-bottom: none; }
.tl-item::before {
  content: "";
  position: absolute; left: -4px; top: 32px;
  width: 9px; height: 9px; border-radius: 50%;
  background: var(--bg); border: 1px solid var(--fg-3);
  transition: all 0.3s var(--ease);
}
.tl-item:hover::before { background: var(--accent); border-color: var(--accent); box-shadow: 0 0 14px var(--glow); }
.tl-item .role {
  font-family: var(--serif);
  font-size: 1.6rem;
  line-height: 1.1;
  margin-bottom: 6px;
}
.tl-item .role em { color: var(--accent); font-style: italic; }
.tl-item .co { color: var(--fg-2); font-size: 0.95rem; margin-bottom: 12px; }
.tl-item .desc { color: var(--fg-3); font-size: 0.92rem; line-height: 1.55; max-width: 620px; }
.tl-item .period {
  font-family: var(--mono);
  font-size: 0.74rem;
  color: var(--fg-3);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  text-align: right;
}
@media (max-width: 720px) {
  .tl-item { grid-template-columns: 1fr; }
  .tl-item .period { text-align: left; }
}

/* ———————————————————— Education ———————————————————— */

.edu-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1px;
  background: var(--border);
  border: 1px solid var(--border);
}
.edu-card {
  background: var(--bg);
  padding: 32px 32px 36px;
  min-height: 220px;
  display: flex;
  flex-direction: column;
  gap: 14px;
  position: relative;
  transition: background 0.4s var(--ease);
}
.edu-card:hover { background: var(--bg-2); }
.edu-card .top {
  display: flex; justify-content: space-between; align-items: center;
  font-family: var(--mono);
  font-size: 0.7rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--fg-3);
}
.edu-card .top .deg { color: var(--fg-3); }
.edu-card .top .now {
  color: var(--accent);
  display: inline-flex; align-items: center; gap: 8px;
}
.edu-card .top .now::before {
  content: "";
  width: 6px; height: 6px; border-radius: 50%;
  background: var(--accent);
  box-shadow: 0 0 10px var(--glow);
  animation: pulse 2.4s var(--ease) infinite;
}
.edu-card .course {
  font-family: var(--serif);
  font-size: clamp(1.6rem, 2.4vw, 2.1rem);
  line-height: 1.1;
  letter-spacing: -0.015em;
}
.edu-card .school {
  font-family: var(--mono);
  font-size: 0.8rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--fg);
  margin-top: auto;
  padding-top: 18px;
  border-top: 1px solid var(--border);
  display: flex; justify-content: space-between; align-items: baseline;
}
.edu-card .school .kind { color: var(--fg-3); font-size: 0.7rem; }

@media (max-width: 720px) { .edu-grid { grid-template-columns: 1fr; } }

/* ———————————————————— Certifications ———————————————————— */

.certs-head {
  display: flex; flex-wrap: wrap; gap: 8px;
  margin-bottom: 40px;
}
.certs-head .pill {
  padding: 10px 16px;
  border: 1px solid var(--border-2);
  border-radius: 100px;
  font-family: var(--mono);
  font-size: 0.72rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--fg-2);
  background: var(--bg-2);
  cursor: pointer;
  transition: all 0.3s var(--ease);
  display: inline-flex; align-items: center; gap: 10px;
}
.certs-head .pill:hover { color: var(--fg); border-color: var(--fg-3); }
.certs-head .pill.on {
  background: var(--fg);
  color: #000;
  border-color: var(--fg);
}
.certs-head .pill .dot-c {
  width: 8px; height: 8px; border-radius: 50%;
}
.certs-head .pill .count {
  font-size: 0.62rem;
  opacity: 0.6;
  padding: 2px 6px;
  border-radius: 10px;
  background: rgba(0,0,0,0.15);
}
.certs-head .pill.on .count { background: rgba(255,255,255,0.2); }

.certs-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
  gap: 1px;
  background: var(--border);
  border: 1px solid var(--border);
}
.cert-card {
  background: var(--bg);
  padding: 28px 20px;
  text-align: center;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 16px;
  transition: background 0.3s var(--ease), transform 0.5s var(--ease);
  text-decoration: none;
  color: inherit;
  position: relative;
  overflow: hidden;
  min-height: 260px;
}
.cert-card:hover { background: var(--bg-2); }
.cert-card::after {
  content: "";
  position: absolute; inset: 0;
  background: radial-gradient(300px 200px at 50% 30%, var(--cert-glow, transparent), transparent 70%);
  opacity: 0;
  transition: opacity 0.4s var(--ease);
  pointer-events: none;
}
.cert-card:hover::after { opacity: 0.8; }
.cert-card .badge-wrap {
  width: 120px;
  height: 120px;
  display: grid; place-items: center;
  position: relative;
  z-index: 1;
  filter: drop-shadow(0 8px 16px rgba(0,0,0,0.4));
  transition: transform 0.5s var(--ease);
}
.cert-card:hover .badge-wrap { transform: scale(1.06) rotate(-2deg); }
.cert-card .badge-wrap img {
  max-width: 100%; max-height: 100%; object-fit: contain;
}
.cert-card .badge-mark {
  width: 96px; height: 96px;
  display: grid; place-items: center;
  border-radius: 50%;
  font-family: var(--serif);
  font-style: italic;
  font-size: 2.4rem;
  font-weight: 400;
  color: var(--fg);
  letter-spacing: -0.02em;
  background:
    radial-gradient(circle at 30% 25%, color-mix(in oklab, var(--cert-color, var(--fg)) 40%, transparent), transparent 60%),
    conic-gradient(from 180deg, var(--cert-color, var(--fg)) 0%, color-mix(in oklab, var(--cert-color, var(--fg)) 40%, #0a0b0d) 50%, var(--cert-color, var(--fg)) 100%);
  border: 1px solid color-mix(in oklab, var(--cert-color, var(--fg)) 60%, transparent);
  box-shadow:
    inset 0 1px 0 rgba(255,255,255,0.12),
    inset 0 -8px 18px rgba(0,0,0,0.4),
    0 12px 24px color-mix(in oklab, var(--cert-color, var(--fg)) 12%, rgba(0,0,0,0.5));
  position: relative;
  overflow: hidden;
}
.cert-card .badge-mark::before {
  content: "";
  position: absolute; inset: 6px;
  border-radius: 50%;
  border: 1px dashed rgba(255,255,255,0.15);
}
.cert-card .badge-mark::after {
  content: "";
  position: absolute;
  inset: -2px;
  border-radius: 50%;
  background: conic-gradient(from 0deg, transparent 0 80%, rgba(255,255,255,0.4) 85%, transparent 90% 100%);
  -webkit-mask: radial-gradient(circle, transparent 46px, #000 47px);
          mask: radial-gradient(circle, transparent 46px, #000 47px);
  animation: spin 12s linear infinite;
  opacity: 0.5;
}
.cert-card .cert-name {
  font-family: var(--serif);
  font-size: 1.05rem;
  line-height: 1.2;
  letter-spacing: -0.005em;
  z-index: 1;
  max-width: 22ch;
}
.cert-card .cert-issuer {
  font-family: var(--mono);
  font-size: 0.65rem;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--fg-3);
  z-index: 1;
}
.cert-card[href]:hover .cert-issuer { color: var(--accent); }
.cert-card .verify {
  font-family: var(--mono);
  font-size: 0.62rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--fg-4);
  margin-top: auto;
  padding-top: 8px;
  display: inline-flex; align-items: center; gap: 6px;
  z-index: 1;
  opacity: 0;
  transform: translateY(4px);
  transition: all 0.3s var(--ease);
}
.cert-card[href]:hover .verify { opacity: 1; transform: none; color: var(--accent); }

.certs-summary {
  display: flex; justify-content: space-between; flex-wrap: wrap; gap: 24px;
  padding: 24px 0;
  border-top: 1px solid var(--border);
  margin-top: 32px;
  font-family: var(--mono);
  font-size: 0.72rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--fg-3);
}
.certs-summary b { color: var(--fg); font-weight: 500; }

@media (max-width: 520px) {
  .certs-grid { grid-template-columns: repeat(2, 1fr); }
  .cert-card { min-height: 220px; padding: 20px 12px; }
  .cert-card .badge-wrap { width: 90px; height: 90px; }
}

/* ———————————————————— Diferenciais ———————————————————— */

.edges {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1px;
  background: var(--border);
  border: 1px solid var(--border);
}
.edge {
  background: var(--bg);
  padding: 36px 32px;
  min-height: 280px;
  display: flex;
  flex-direction: column;
  gap: 16px;
  position: relative;
  transition: background 0.4s var(--ease);
  overflow: hidden;
}
.edge:hover { background: var(--bg-2); }
.edge::after {
  content: "";
  position: absolute; inset: 0;
  background: radial-gradient(400px 200px at var(--mx, 50%) var(--my, 0%), color-mix(in oklab, var(--accent) 10%, transparent), transparent 60%);
  opacity: 0;
  transition: opacity 0.3s var(--ease);
  pointer-events: none;
}
.edge:hover::after { opacity: 1; }
.edge .k {
  font-family: var(--serif);
  font-size: 3.5rem;
  color: var(--accent);
  line-height: 1;
  font-style: italic;
}
.edge .h {
  font-family: var(--serif);
  font-size: 1.6rem;
  line-height: 1.1;
}
.edge .d { color: var(--fg-2); font-size: 0.93rem; line-height: 1.55; margin-top: auto; }
@media (max-width: 900px) { .edges { grid-template-columns: 1fr; } }

/* ———————————————————— CTA ———————————————————— */

.cta {
  text-align: center;
  padding-block: clamp(100px, 16vh, 200px);
  position: relative;
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
  overflow: hidden;
}
.cta::before {
  content: "";
  position: absolute; inset: 0;
  background: radial-gradient(600px 400px at 50% 50%, color-mix(in oklab, var(--accent) 12%, transparent), transparent 70%);
  pointer-events: none;
}
.cta .k {
  font-family: var(--mono);
  font-size: 0.72rem;
  color: var(--accent);
  letter-spacing: 0.2em;
  text-transform: uppercase;
  display: inline-flex; align-items: center; gap: 10px;
  margin-bottom: 24px;
}
.cta .k::before, .cta .k::after {
  content: ""; width: 40px; height: 1px; background: var(--accent);
}
.cta h2 {
  font-family: var(--serif);
  font-size: clamp(3rem, 9vw, 7.5rem);
  line-height: 1.02;
  letter-spacing: -0.03em;
  position: relative;
  padding-bottom: 0.12em;
}
.cta h2 em { font-style: italic; color: var(--accent); }
.cta .actions {
  margin-top: 48px;
  display: inline-flex;
  gap: 12px;
  flex-wrap: wrap;
  justify-content: center;
  position: relative;
}
.btn {
  display: inline-flex; align-items: center; gap: 12px;
  padding: 16px 24px;
  border-radius: 100px;
  font-family: var(--mono);
  font-size: 0.78rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  text-decoration: none;
  transition: all 0.35s var(--ease);
  border: 1px solid var(--border-2);
  color: var(--fg);
  background: var(--bg-2);
  cursor: pointer;
}
.btn:hover { border-color: var(--fg); transform: translateY(-2px); }
.btn.primary {
  background: var(--accent);
  color: #0a0a0a;
  border-color: var(--accent);
  box-shadow: 0 10px 40px var(--glow);
}
.btn.primary:hover {
  background: var(--fg);
  border-color: var(--fg);
  box-shadow: 0 14px 50px rgba(237,232,222,0.25);
}
.btn .arr { display: inline-block; transition: transform 0.3s var(--ease); }
.btn:hover .arr { transform: translateX(4px); }

/* ———————————————————— Footer ———————————————————— */

.footer {
  padding: 80px 0 40px;
  position: relative;
}
.footer-top {
  display: grid;
  grid-template-columns: 1.4fr 1fr 1fr;
  gap: 48px;
  padding-bottom: 56px;
  border-bottom: 1px solid var(--border);
}
.footer-top h3 {
  font-family: var(--serif);
  font-size: 2.4rem;
  line-height: 1.05;
  letter-spacing: -0.015em;
  max-width: 14ch;
}
.footer-col h4 { font-family: var(--mono); font-size: 0.72rem; color: var(--fg-3); letter-spacing: 0.15em; text-transform: uppercase; margin-bottom: 16px; }
.footer-col a, .footer-col p { display: block; color: var(--fg-2); text-decoration: none; margin-bottom: 8px; font-size: 0.95rem; transition: color 0.2s var(--ease); }
.footer-col a:hover { color: var(--accent); }

.footer-bottom {
  padding-top: 32px;
  display: flex; justify-content: space-between; align-items: center;
  gap: 16px; flex-wrap: wrap;
  font-family: var(--mono);
  font-size: 0.7rem;
  color: var(--fg-4);
  letter-spacing: 0.1em;
  text-transform: uppercase;
}
.footer-sig {
  font-family: var(--serif);
  font-size: clamp(6rem, 24vw, 22rem);
  line-height: 0.85;
  letter-spacing: -0.04em;
  color: var(--bg-3);
  text-align: center;
  margin-top: 60px;
  user-select: none;
  background: linear-gradient(180deg, var(--bg-3) 0%, transparent 85%);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}

@media (max-width: 820px) { .footer-top { grid-template-columns: 1fr; } }

/* ———————————————————— Cursor / ambient glow ———————————————————— */

.cursor-glow {
  position: fixed;
  pointer-events: none;
  width: 400px; height: 400px;
  border-radius: 50%;
  background: radial-gradient(circle, color-mix(in oklab, var(--accent) 8%, transparent), transparent 60%);
  transform: translate(-50%, -50%);
  z-index: 0;
  mix-blend-mode: screen;
  transition: opacity 0.4s var(--ease);
}

/* ———————————————————— Reveal helper ———————————————————— */

.reveal {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.9s var(--ease), transform 0.9s var(--ease);
}
.reveal.in { opacity: 1; transform: none; }

/* ———————————————————— Project Modal ———————————————————— */

.modal-backdrop {
  position: fixed; inset: 0;
  background: rgba(5,6,8,0.7);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  z-index: 200;
  display: flex; align-items: center; justify-content: center;
  padding: 40px 20px;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.35s var(--ease);
}
.modal-backdrop.open { opacity: 1; pointer-events: auto; }
.modal {
  width: 100%;
  max-width: 1040px;
  max-height: calc(100vh - 80px);
  background: var(--bg-2);
  border: 1px solid var(--border-2);
  border-radius: 12px;
  overflow: hidden;
  display: grid;
  grid-template-columns: 1.4fr 1fr;
  transform: translateY(20px) scale(0.98);
  transition: transform 0.45s var(--ease);
  box-shadow: 0 40px 120px rgba(0,0,0,0.6), 0 0 80px color-mix(in oklab, var(--accent) 10%, transparent);
}
.modal-backdrop.open .modal { transform: none; }
.modal-image {
  background: var(--bg-3);
  overflow: hidden;
  display: flex; align-items: center; justify-content: center;
  position: relative;
}
.modal-image img { width: 100%; height: 100%; object-fit: cover; display: block; }
.modal-image::after {
  content: "";
  position: absolute; inset: 0;
  background: linear-gradient(135deg, transparent 50%, rgba(0,0,0,0.4));
}
.modal-body {
  padding: 40px;
  display: flex; flex-direction: column; gap: 20px;
  overflow-y: auto;
}
.modal-body .meta {
  font-family: var(--mono);
  font-size: 0.7rem;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--fg-3);
  display: flex; justify-content: space-between;
}
.modal-body .meta .idx { color: var(--accent); }
.modal-body h3 {
  font-family: var(--serif);
  font-size: clamp(2rem, 3.4vw, 3rem);
  line-height: 1;
  letter-spacing: -0.02em;
}
.modal-body .cat-line { color: var(--fg-2); font-size: 0.95rem; }
.modal-body .desc { color: var(--fg-2); font-size: 0.98rem; line-height: 1.6; }
.modal-body .stack-line { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 8px; }
.modal-body .stack-line span {
  padding: 6px 12px;
  border: 1px solid var(--border-2);
  border-radius: 100px;
  font-family: var(--mono);
  font-size: 0.68rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--fg-2);
}
.modal-body .actions { margin-top: auto; padding-top: 16px; display: flex; gap: 10px; flex-wrap: wrap; }
.modal-close {
  position: absolute; top: 16px; right: 16px;
  width: 36px; height: 36px;
  border-radius: 50%;
  background: rgba(10,11,13,0.8);
  border: 1px solid var(--border-2);
  color: var(--fg);
  cursor: pointer;
  font-size: 16px;
  display: grid; place-items: center;
  z-index: 5;
  transition: all 0.25s var(--ease);
}
.modal-close:hover { background: var(--accent); color: #000; border-color: var(--accent); }

@media (max-width: 820px) {
  .modal { grid-template-columns: 1fr; max-height: calc(100vh - 60px); }
  .modal-image { height: 220px; }
  .modal-body { padding: 28px; }
}

/* ———————————————————— Project Modal end ———————————————————— */

.tweaks {
  position: fixed;
  right: 20px;
  bottom: 20px;
  z-index: 90;
  width: 280px;
  padding: 18px;
  border: 1px solid var(--border-2);
  background: rgba(16, 18, 22, 0.9);
  backdrop-filter: blur(16px);
  border-radius: 14px;
  font-family: var(--mono);
  font-size: 0.72rem;
  color: var(--fg-2);
  display: none;
}
.tweaks.open { display: block; }
.tweaks h5 {
  font-family: var(--mono);
  font-size: 0.72rem;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--fg);
  margin-bottom: 12px;
  display: flex; align-items: center; justify-content: space-between;
}
.tweak-row { margin-bottom: 14px; }
.tweak-row label { display: block; color: var(--fg-3); margin-bottom: 6px; letter-spacing: 0.08em; }
.swatches { display: flex; gap: 6px; flex-wrap: wrap; }
.sw {
  width: 24px; height: 24px; border-radius: 50%;
  cursor: pointer; border: 1px solid var(--border-2);
  transition: all 0.2s var(--ease);
}
.sw:hover { transform: scale(1.12); }
.sw.on { outline: 2px solid var(--fg); outline-offset: 2px; }
.toggle-grp { display: flex; gap: 4px; }
.toggle-grp button {
  flex: 1; padding: 8px 10px;
  background: transparent; border: 1px solid var(--border-2);
  color: var(--fg-2); font-family: var(--mono); font-size: 0.68rem;
  letter-spacing: 0.08em; text-transform: uppercase; cursor: pointer;
  border-radius: 6px; transition: all 0.2s var(--ease);
}
.toggle-grp button.on { background: var(--fg); color: #000; border-color: var(--fg); }