/* =========================================================
   Ney Barão, Portfolio
   Foundation: tokens, reset, base, nav, hero
   ========================================================= */

/* ---- Tokens ------------------------------------------------ */
:root {
  /* Accent */
  --accent: #FF2F1C;

  /* Neutral ramp */
  --black: #0a0a0a;
  --white: #ffffff;

  /* Fonts */
  --font-display: "Anek Latin", system-ui, sans-serif;
  --font-body: "DM Sans", system-ui, sans-serif;
  --font-mono: "JetBrains Mono", ui-monospace, monospace;

  /* Fluid type scale */
  --step--1: clamp(0.78rem, 0.74rem + 0.2vw, 0.88rem);
  --step-0:  clamp(0.95rem, 0.9rem + 0.25vw, 1.05rem);
  --step-1:  clamp(1.2rem, 1.1rem + 0.5vw, 1.5rem);
  --step-2:  clamp(1.6rem, 1.3rem + 1.5vw, 2.4rem);
  --step-3:  clamp(2.2rem, 1.6rem + 3vw, 3.6rem);
  --hero:    clamp(3.5rem, 1rem + 17vw, 16rem);

  /* Spacing */
  --space-section: clamp(4rem, 2rem + 8vw, 9rem);
  --gutter: clamp(1.25rem, 0.8rem + 2vw, 2.5rem);

  /* Layout */
  --maxw: 1600px;
  --radius: 14px;
  --nav-h: 72px;

  /* Motion */
  --ease: cubic-bezier(0.22, 1, 0.36, 1);
}

/* Light theme (default) */
[data-theme="light"] {
  --bg: var(--white);
  --fg: var(--black);
  --muted: #6b6b6b;
  --line: #e6e6e6;
  --surface: #f5f5f4;
  --media: #e7e6e3;
}

/* Dark theme */
[data-theme="dark"] {
  --bg: #0b0b0b;
  --fg: #f4f3f1;
  --muted: #9a9a9a;
  --line: #232323;
  --surface: #141414;
  --media: #1a1a1a;
}

/* ---- Reset ------------------------------------------------- */
*, *::before, *::after { box-sizing: border-box; }
* { margin: 0; }
html { -webkit-text-size-adjust: 100%; scroll-behavior: smooth; }
img, picture, svg { display: block; max-width: 100%; }
button, a { font: inherit; color: inherit; }
button { background: none; border: none; cursor: pointer; }
a { text-decoration: none; }
ul { list-style: none; padding: 0; }

/* Keyboard focus visibility (accessibility) */
:focus-visible {
  outline: 2px solid var(--fg);
  outline-offset: 3px;
  border-radius: 3px;
}
.nav :focus-visible { outline-color: #fff; }
.case-hero :focus-visible { outline-color: #fff; }

/* Language visibility */
[data-lang="en"] [data-lang="pt"] { display: none; }
[data-lang="pt"] [data-lang="en"] { display: none; }

/* ---- Base -------------------------------------------------- */
body {
  background: var(--bg);
  color: var(--fg);
  font-family: var(--font-body);
  font-size: var(--step-0);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  transition: background 0.4s var(--ease), color 0.4s var(--ease);
  overflow-x: hidden;
}

.skip-link {
  position: absolute;
  left: -9999px;
  top: 0;
  z-index: 200;
  background: var(--fg);
  color: var(--bg);
  padding: 0.6rem 1rem;
  border-radius: 0 0 8px 0;
}
.skip-link:focus { left: 0; }

.marker {
  font-family: var(--font-mono);
  font-size: var(--step--1);
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--muted);
}

/* ---- Loader ----------------------------------------------- */
.loader {
  position: fixed;
  inset: 0;
  z-index: 1000;
  background: var(--bg);
  display: grid;
  place-items: center;
  animation: loaderSafety 0s linear 4s forwards;
}
.loader__name {
  font-family: var(--font-display);
  font-weight: 500;
  font-size: var(--step-2);
  letter-spacing: -0.02em;
  color: var(--fg);
  opacity: 0;
  transform: translateY(20px);
}
.loader__mark { color: var(--accent); }
@keyframes loaderSafety { to { opacity: 0; visibility: hidden; pointer-events: none; } }

/* ---- Navigation ------------------------------------------- */
.nav {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 100;
  height: var(--nav-h);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 0 var(--gutter);
  mix-blend-mode: difference;
  color: #fff;
}
/* mix-blend keeps nav legible over light/dark hero; force white glyphs */
.nav, .nav a, .nav button { color: #fff; }

.nav__logo {
  font-family: var(--font-display);
  font-weight: 500;
  font-size: var(--step-1);
  letter-spacing: -0.01em;
  line-height: 1;
}
.nav__logo-mark { color: var(--accent); }

.nav__links {
  display: flex;
  gap: 1.6rem;
  font-family: var(--font-mono);
  font-size: var(--step--1);
  text-transform: uppercase;
  letter-spacing: 0.04em;
}
.nav__links a { position: relative; opacity: 0.85; transition: opacity 0.25s var(--ease); }
.nav__links a:hover { opacity: 1; }

.nav__tools { display: flex; align-items: center; gap: 0.5rem; }
.tool-btn {
  width: 42px; height: 42px;
  display: grid; place-items: center;
  border: 1px solid rgba(255,255,255,0.4);
  border-radius: 50%;
  font-family: var(--font-mono);
  font-size: var(--step--1);
  transition: background 0.25s var(--ease), border-color 0.25s var(--ease);
}
.tool-btn:hover { background: rgba(255,255,255,0.15); }

.nav__cta {
  display: inline-flex;
  align-items: center;
  padding: 0.55rem 1.1rem;
  border-radius: 100px;
  background: #fff;
  color: #000 !important;
  font-family: var(--font-mono);
  font-size: var(--step--1);
  text-transform: uppercase;
  letter-spacing: 0.03em;
  transition: transform 0.25s var(--ease);
}
.nav__cta:hover { transform: translateY(-2px); }

/* ---- Hero -------------------------------------------------- */
.hero {
  position: relative;
  min-height: 100svh;
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  padding: calc(var(--nav-h) + 1.5rem) var(--gutter) clamp(1.5rem, 3vw, 3rem);
  overflow: hidden;
}
.hero__media {
  position: absolute;
  inset: 0;
  z-index: -1;
  background: var(--media);
  overflow: hidden;
}
.hero__media picture {
  display: block;
  width: 100%;
  height: 100%;
}
.hero__img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center 28%;
}
.hero__media::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(to top, rgba(0,0,0,0.78) 0%, rgba(0,0,0,0.12) 45%, rgba(0,0,0,0.45) 100%);
}

.hero__top {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
}

.hero__bottom {
  display: grid;
  grid-template-columns: 1fr;
  gap: clamp(1rem, 3vw, 2.5rem);
}
.hero__intro {
  max-width: 46ch;
  margin-left: auto;
  display: flex;
  flex-direction: column;
  gap: 0.6rem;
}
.hero__intro p { font-size: var(--step-1); line-height: 1.4; color: #fff; }
.hero__eyebrow { color: var(--accent); }
.hero__cred { color: rgba(255,255,255,0.72); }

.hero__name {
  font-family: var(--font-display);
  font-weight: 500;
  font-size: var(--hero);
  line-height: 0.82;
  letter-spacing: -0.03em;
  white-space: nowrap;
  color: #fff;
}
.hero__name-mark { color: var(--accent); }

/* ---- Sections (shared) ------------------------------------ */
.section {
  padding: var(--space-section) var(--gutter);
  max-width: var(--maxw);
  margin-inline: auto;
}
.section__head {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  gap: 1rem;
  flex-wrap: wrap;
  padding-bottom: clamp(2rem, 4vw, 3.5rem);
  border-top: 1px solid var(--line);
  padding-top: 1.25rem;
}
.section__title {
  font-family: var(--font-display);
  font-weight: 500;
  font-size: var(--step-3);
  letter-spacing: -0.02em;
  line-height: 1;
}
.section__title--sm { font-size: var(--step-2); }

.btn {
  display: inline-flex;
  align-items: center;
  align-self: flex-start;
  padding: 0.7rem 1.3rem;
  border: 1px solid var(--fg);
  border-radius: 100px;
  font-family: var(--font-mono);
  font-size: var(--step--1);
  text-transform: uppercase;
  letter-spacing: 0.03em;
  transition: background 0.25s var(--ease), color 0.25s var(--ease), transform 0.25s var(--ease);
}
.btn:hover { background: var(--fg); color: var(--bg); transform: translateY(-2px); }

.tag {
  font-family: var(--font-mono);
  font-size: var(--step--1);
  text-transform: uppercase;
  letter-spacing: 0.03em;
  padding: 0.25rem 0.7rem;
  border: 1px solid var(--line);
  border-radius: 100px;
  color: var(--muted);
}

/* ---- About ------------------------------------------------ */
.about__top {
  border-top: 1px solid var(--line);
  padding-top: 1.25rem;
  margin-bottom: clamp(3rem, 8vw, 7rem);
}
.about__inner {
  display: grid;
  grid-template-columns: 1fr 2.5fr;
  gap: clamp(1.5rem, 4vw, 4rem);
  align-items: start;
}
.about__label { padding-top: 0.4rem; }
.about__label .dot--static { display: inline-block; vertical-align: middle; animation: none; }
.about__body { display: flex; flex-direction: column; align-items: flex-start; }
.about__statement {
  font-family: var(--font-display);
  font-weight: 500;
  font-size: var(--step-3);
  line-height: 1.1;
  letter-spacing: -0.02em;
  margin-bottom: clamp(2rem, 4vw, 3rem);
  text-wrap: balance;
}
.about__cols {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: clamp(1.5rem, 4vw, 4rem);
  width: 100%;
  margin-top: clamp(3rem, 7vw, 6rem);
}
.about__col { display: flex; flex-direction: column; gap: 0.9rem; padding-top: 1.25rem; border-top: 1px solid var(--line); }
.about__col p { color: var(--muted); }

/* ---- Approach --------------------------------------------- */
.approach__grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: clamp(1rem, 2vw, 1.5rem);
}
.approach__card {
  background: var(--surface);
  border-radius: var(--radius);
  padding: clamp(1.5rem, 2.5vw, 2.5rem);
  min-height: 320px;
  display: flex;
  flex-direction: column;
  gap: 0.9rem;
  transition: transform 0.4s var(--ease);
}
.approach__card:hover { transform: translateY(-6px); }
.approach__num {
  font-family: var(--font-mono);
  font-size: var(--step-1);
  color: var(--accent);
}
.approach__title {
  font-family: var(--font-display);
  font-weight: 500;
  font-size: var(--step-2);
  line-height: 1.05;
  letter-spacing: -0.01em;
  margin-top: auto;
}
.approach__card p { color: var(--muted); }

/* ---- Selected Work ---------------------------------------- */
.work__grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: clamp(1.5rem, 3vw, 3rem);
}
.work-card:first-child { grid-column: 1 / -1; }
.work-card__media {
  position: relative;
  aspect-ratio: 16 / 10;
  border-radius: var(--radius);
  overflow: hidden;
  background: var(--surface);
}
.work-card:first-child .work-card__media { aspect-ratio: 21 / 9; }
.work-card__media img {
  width: 100%; height: 100%;
  object-fit: cover;
  transition: transform 0.7s var(--ease);
}
.work-card__link:hover .work-card__media img { transform: scale(1.04); }
.work-card__meta {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  gap: 1rem;
  margin-top: 1.1rem;
}
.work-card__title {
  font-family: var(--font-display);
  font-weight: 500;
  font-size: var(--step-2);
  letter-spacing: -0.01em;
}
.work-card__desc { color: var(--muted); margin-top: 0.2rem; }
.work-card__tags { display: flex; gap: 0.5rem; flex-wrap: wrap; margin-top: 1rem; }

/* ---- Experience ------------------------------------------- */
.experience__list { display: flex; flex-direction: column; }
.exp-row {
  display: grid;
  grid-template-columns: 180px 1fr 1fr;
  gap: 1rem;
  align-items: baseline;
  padding: clamp(1rem, 2vw, 1.6rem) 0;
  border-top: 1px solid var(--line);
  transition: padding-left 0.35s var(--ease);
}
.exp-row:last-child { border-bottom: 1px solid var(--line); }
.exp-row:hover { padding-left: 1rem; }
.exp-row__role {
  font-family: var(--font-display);
  font-weight: 500;
  font-size: var(--step-1);
}
.exp-row__company { color: var(--muted); justify-self: end; text-align: right; }

/* ---- Clients ---------------------------------------------- */
.clients__row {
  display: grid;
  grid-template-columns: repeat(6, 1fr);
  gap: clamp(1rem, 3vw, 3rem);
  align-items: center;
}
.clients__row img {
  width: 100%;
  max-height: 38px;
  object-fit: contain;
  filter: grayscale(1) brightness(0) invert(var(--logo-invert, 0));
  opacity: 0.55;
  transition: opacity 0.3s var(--ease);
}
[data-theme="dark"] { --logo-invert: 1; }
.clients__row img:hover { opacity: 1; }

/* Clients marquee (right to left) */
.marquee {
  position: relative;
  width: 100%;
  overflow: hidden;
  -webkit-mask-image: linear-gradient(to right, transparent, #000 6%, #000 94%, transparent);
  mask-image: linear-gradient(to right, transparent, #000 6%, #000 94%, transparent);
}
.marquee__track {
  display: flex;
  flex-wrap: nowrap;
  align-items: center;
  width: max-content;
  animation: marquee 40s linear infinite;
  will-change: transform;
}
.marquee:hover .marquee__track { animation-play-state: paused; }
.marquee img {
  height: 30px;
  width: auto;
  max-width: none;
  flex: none;
  margin-inline: clamp(1.75rem, 4vw, 3.5rem);
  filter: grayscale(1) brightness(0) invert(var(--logo-invert, 0));
  opacity: 0.5;
  transition: opacity 0.3s var(--ease);
}
.marquee img:hover { opacity: 1; }
@keyframes marquee { to { transform: translateX(-50%); } }

/* ---- Footer ----------------------------------------------- */
.footer {
  padding: var(--space-section) var(--gutter) 2rem;
  border-top: 1px solid var(--line);
}
.footer__cta { max-width: var(--maxw); margin-inline: auto; }
.footer__status { display: inline-flex; align-items: center; gap: 0.5rem; }
.dot {
  width: 8px; height: 8px; border-radius: 50%;
  background: var(--accent);
  box-shadow: 0 0 0 0 color-mix(in srgb, var(--accent) 60%, transparent);
  animation: pulse 2.4s var(--ease) infinite;
}
@keyframes pulse {
  0% { box-shadow: 0 0 0 0 color-mix(in srgb, var(--accent) 60%, transparent); }
  70% { box-shadow: 0 0 0 10px transparent; }
  100% { box-shadow: 0 0 0 0 transparent; }
}
.footer__headline {
  font-family: var(--font-display);
  font-weight: 500;
  font-size: var(--step-3);
  line-height: 1.05;
  letter-spacing: -0.02em;
  max-width: 18ch;
  margin: 1.2rem 0 clamp(2rem, 5vw, 4rem);
  text-wrap: balance;
}
.footer__email {
  font-family: var(--font-display);
  font-weight: 500;
  font-size: clamp(2rem, 10.2vw, 13rem);
  line-height: 0.95;
  letter-spacing: -0.03em;
  display: block;
  width: 100%;
  white-space: nowrap;
  transition: color 0.3s var(--ease);
}
.footer__email:hover { color: var(--accent); }
.footer__bottom {
  max-width: var(--maxw);
  margin: clamp(3rem, 8vw, 6rem) auto 0;
  padding-top: 1.5rem;
  border-top: 1px solid var(--line);
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 1rem;
  flex-wrap: wrap;
}
.footer__social { display: flex; gap: 1.2rem; font-family: var(--font-mono); font-size: var(--step--1); text-transform: uppercase; }
.footer__social a { color: var(--muted); transition: color 0.25s var(--ease); }
.footer__social a:hover { color: var(--fg); }

/* ---- Responsive ------------------------------------------- */
@media (max-width: 960px) {
  .approach__grid { grid-template-columns: 1fr; }
  .clients__row { grid-template-columns: repeat(3, 1fr); row-gap: 2rem; }
  .exp-row { grid-template-columns: 130px 1fr; }
  .exp-row__company { grid-column: 2; justify-self: start; text-align: left; }
}
@media (max-width: 720px) {
  .nav__links { display: none; }
  .hero__intro { margin-left: 0; }
  .hero__name { white-space: normal; }
  .about__cols { grid-template-columns: 1fr; }
  .work__grid { grid-template-columns: 1fr; }
  .work-card:first-child .work-card__media { aspect-ratio: 16 / 10; }
}

/* ===========================================================
   Case study pages
   =========================================================== */
.case-hero {
  position: relative;
  min-height: 92svh;
  display: flex;
  align-items: flex-end;
  padding: calc(var(--nav-h) + 2rem) var(--gutter) clamp(2rem, 5vw, 4rem);
  background-image: linear-gradient(to top, rgba(0,0,0,0.6), rgba(0,0,0,0.1) 60%), var(--case-img);
  background-size: cover;
  background-position: center;
  color: #fff;
}
.case-hero__inner { max-width: var(--maxw); margin-inline: auto; width: 100%; display: flex; flex-direction: column; gap: 1rem; }
.case-hero__back { color: rgba(255,255,255,0.8) !important; }
.case-hero__title {
  font-family: var(--font-display);
  font-weight: 500;
  font-size: var(--hero);
  line-height: 0.9;
  letter-spacing: -0.03em;
}
.case-hero__sub { font-size: var(--step-2); max-width: 24ch; }
.case-hero__tags { display: flex; gap: 0.5rem; flex-wrap: wrap; margin-top: 0.5rem; }
.case-hero .tag { color: #fff; border-color: rgba(255,255,255,0.4); }

.case-section { max-width: var(--maxw); margin-inline: auto; padding: clamp(3rem, 6vw, 6rem) var(--gutter); }

.case-intro { display: flex; flex-direction: column; align-items: center; text-align: center; gap: 1.5rem; padding-top: clamp(4rem, 9vw, 8rem); }
.case-intro__lead {
  font-family: var(--font-display);
  font-weight: 500;
  font-size: var(--step-3);
  line-height: 1.12;
  letter-spacing: -0.02em;
  max-width: 26ch;
  text-wrap: balance;
}

.case-meta {
  display: grid;
  grid-template-columns: repeat(6, 1fr);
  gap: 1.5rem;
  border-top: 1px solid var(--line);
  padding-top: 2rem;
}
.meta-item { display: flex; flex-direction: column; gap: 0.5rem; }

.case-figure { max-width: var(--maxw); margin: clamp(1rem, 3vw, 3rem) auto; padding-inline: var(--gutter); }
.case-figure img { width: 100%; border-radius: var(--radius); object-fit: cover; }
.case-figure--bleed { max-width: 100%; padding-inline: 0; }
.case-figure--bleed img { border-radius: 0; max-height: 82vh; }

.case-split {
  display: grid;
  grid-template-columns: 1fr 2.5fr;
  gap: clamp(1.5rem, 4vw, 4rem);
  align-items: start;
  border-top: 1px solid var(--line);
  padding-top: 2rem;
}
.case-split__label { display: flex; flex-direction: column; gap: 1rem; }
.case-split__body { display: flex; flex-direction: column; gap: 1.5rem; max-width: 62ch; }
.case-split__body p { color: var(--muted); font-size: var(--step-1); line-height: 1.55; }
.case-h2 { font-family: var(--font-display); font-weight: 500; font-size: var(--step-2); line-height: 1.1; letter-spacing: -0.01em; }
.case-h3 { font-family: var(--font-display); font-weight: 500; font-size: var(--step-1); }
.case-lead-sm { font-size: var(--step-1) !important; color: var(--fg) !important; line-height: 1.5; }

.case-findings { display: flex; flex-direction: column; gap: 0; }
.case-findings li { display: flex; gap: 1.5rem; border-top: 1px solid var(--line); padding: 1.5rem 0; }
.case-findings li:first-child { border-top: 0; padding-top: 0; }
.case-findings__num { font-family: var(--font-mono); color: var(--accent); font-size: var(--step-0); }
.case-findings strong { font-family: var(--font-display); font-weight: 500; display: block; margin-bottom: 0.3rem; color: var(--fg); }
.case-findings li div { color: var(--muted); }

.case-metrics { display: flex; flex-direction: column; gap: 2.5rem; border-top: 1px solid var(--line); padding-top: 2rem; }
.case-metrics__lead { font-family: var(--font-display); font-weight: 500; font-size: var(--step-2); max-width: 32ch; line-height: 1.15; letter-spacing: -0.01em; }
.case-metrics__grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 2rem; }
.metric { display: flex; flex-direction: column; gap: 0.5rem; }
.metric__num { font-family: var(--font-display); font-weight: 500; font-size: clamp(3rem, 8vw, 7rem); line-height: 1; letter-spacing: -0.03em; }
.metric__label { color: var(--muted); }

.case-more { border-top: 1px solid var(--line); }
.case-more .section__head { border-top: 0; padding-top: 0; }

@media (max-width: 960px) {
  .case-meta { grid-template-columns: repeat(3, 1fr); row-gap: 2rem; }
  .case-split { grid-template-columns: 1fr; }
}
@media (max-width: 720px) {
  .case-meta { grid-template-columns: repeat(2, 1fr); }
  .case-metrics__grid { grid-template-columns: 1fr; }
  .case-findings li { flex-direction: column; gap: 0.5rem; }
}

/* ---- Motion preferences ----------------------------------- */
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  * { transition: none !important; animation: none !important; }
  .loader { display: none !important; }
}