/* =================================================================
   RETTI TECH — main.css
   Monocromatic design system. No accent color.
================================================================= */

/* ---------- 0. FONTS ---------- */
@font-face {
  font-family: 'Space Grotesk';
  src: url('/assets/fonts/SpaceGrotesk-Variable.woff2') format('woff2-variations'),
       url('/assets/fonts/SpaceGrotesk-Variable.woff2') format('woff2');
  font-weight: 300 700;
  font-display: swap;
  font-style: normal;
}
@font-face {
  font-family: 'JetBrains Mono';
  src: url('/assets/fonts/JetBrainsMono-Variable.woff2') format('woff2-variations'),
       url('/assets/fonts/JetBrainsMono-Variable.woff2') format('woff2');
  font-weight: 400 600;
  font-display: swap;
  font-style: normal;
}

/* ---------- 1. TOKENS ---------- */
:root {
  --black:    #0A0A0A;
  --gray-900: #111111;
  --gray-800: #181818;
  --gray-700: #222222;
  --gray-600: #333333;
  --gray-500: #444444;
  --gray-400: #666666;
  --gray-300: #999999;
  --gray-200: #CCCCCC;
  --gray-100: #E5E5E5;
  --off-white:#F5F5F5;
  --white:    #FFFFFF;

  --ff-display: 'Space Grotesk', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --ff-mono:    'JetBrains Mono', ui-monospace, 'SF Mono', Menlo, monospace;

  --step--1: clamp(0.78rem, 0.76rem + 0.1vw, 0.83rem);
  --step-0:  clamp(0.94rem, 0.91rem + 0.15vw, 1.00rem);
  --step-1:  clamp(1.13rem, 1.08rem + 0.22vw, 1.25rem);
  --step-2:  clamp(1.35rem, 1.28rem + 0.34vw, 1.56rem);
  --step-3:  clamp(1.62rem, 1.51rem + 0.52vw, 1.95rem);
  --step-4:  clamp(1.94rem, 1.78rem + 0.78vw, 2.44rem);
  --step-5:  clamp(2.33rem, 2.10rem + 1.15vw, 3.05rem);
  --step-6:  clamp(2.80rem, 2.46rem + 1.66vw, 3.82rem);
  --step-7:  clamp(3.36rem, 2.89rem + 2.36vw, 4.77rem);

  --space-1:  0.25rem;
  --space-2:  0.5rem;
  --space-3:  0.75rem;
  --space-4:  1rem;
  --space-5:  1.5rem;
  --space-6:  2rem;
  --space-7:  3rem;
  --space-8:  4rem;
  --space-9:  6rem;
  --space-10: 8rem;

  --container: min(92vw, 1200px);
  --tt-tight:  -0.03em;
  --tt-mono:   0.2em;
}

/* ---------- 2. RESET ---------- */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
body {
  font-family: var(--ff-display);
  font-size: var(--step-0);
  line-height: 1.6;
  background: var(--black);
  color: var(--white);
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  min-height: 100vh;
  overflow-x: hidden;
}
img, svg, video { display: block; max-width: 100%; height: auto; }
a { color: inherit; text-decoration: none; }
button { font: inherit; background: none; border: 0; color: inherit; cursor: pointer; }
:focus-visible { outline: 2px solid var(--white); outline-offset: 4px; }

/* ---------- 3. TYPOGRAPHY ---------- */
.label-mono {
  font-family: var(--ff-mono);
  font-size: var(--step--1);
  text-transform: uppercase;
  letter-spacing: var(--tt-mono);
  color: var(--gray-400);
}
.h-display {
  font-size: var(--step-6);
  font-weight: 700;
  line-height: 1.05;
  letter-spacing: var(--tt-tight);
}
.h-section {
  font-size: var(--step-5);
  font-weight: 600;
  line-height: 1.1;
  letter-spacing: var(--tt-tight);
}
.dim { color: var(--gray-500); }

/* ---------- 4. LAYOUT ---------- */
.container { width: var(--container); margin-inline: auto; }
.section { padding-block: var(--space-10); border-top: 1px solid var(--gray-800); }
.section:first-child { border-top: 0; }
.section__head {
  display: flex; align-items: baseline; gap: var(--space-5);
  margin-bottom: var(--space-7);
}

/* ---------- 5. TOPBAR ---------- */
.topbar {
  position: fixed; inset: 0 0 auto 0; z-index: 50;
  display: flex; justify-content: space-between; align-items: center;
  padding: var(--space-4) var(--space-7);
  background: linear-gradient(to bottom, rgba(10,10,10,0.85), transparent);
  backdrop-filter: blur(8px);
}
.topbar__brand img { display: block; height: 28px; width: auto; }
.topbar__nav { display: flex; gap: var(--space-6); }
.topbar__nav a {
  font-family: var(--ff-mono);
  font-size: var(--step--1);
  text-transform: uppercase;
  letter-spacing: var(--tt-mono);
  color: var(--gray-300);
  transition: color 0.2s;
}
.topbar__nav a:hover { color: var(--white); }
@media (max-width: 767px) { .topbar__nav { display: none; } }

/* ---------- 6. HERO ---------- */
.hero {
  position: relative;
  min-height: 100svh;
  display: grid;
  place-items: center;
  overflow: hidden;
  border-top: 0;
}
.hero__scene {
  position: absolute; inset: 0;
  display: grid; place-items: center;
}
.hero__scene canvas { width: 100% !important; height: 100% !important; }
.hero__fallback {
  width: min(60vmin, 520px);
  height: auto;
  color: var(--gray-700);
  fill: none;
  stroke: currentColor;
  stroke-width: 1;
  transition: opacity 0.4s;
}
.hero__scene[data-hero-ready] .hero__fallback { opacity: 0; pointer-events: none; }

.hero__overlay {
  position: relative; z-index: 2;
  text-align: center;
  display: grid; gap: var(--space-5);
  padding: var(--space-7);
  max-width: 900px;
}
.hero__label { color: var(--gray-400); }
.hero__title {
  font-size: var(--step-7);
  font-weight: 700;
  line-height: 1.02;
  letter-spacing: var(--tt-tight);
}
.hero__subtitle {
  font-size: var(--step-1);
  color: var(--gray-200);
  font-weight: 300;
  max-width: 520px;
  margin-inline: auto;
  line-height: 1.5;
}
.hero__scroll-hint {
  position: absolute; bottom: var(--space-6); left: 50%;
  transform: translateX(-50%);
  z-index: 2;
  animation: bob 2.4s ease-in-out infinite;
}
@keyframes bob { 0%,100% { transform: translate(-50%, 0); } 50% { transform: translate(-50%, 6px); } }

/* ---------- 7. SCROLL REVEALS ---------- */
[data-reveal] { opacity: 0; transform: translateY(20px); will-change: opacity, transform; }
[data-reveal-ready] { opacity: 1; transform: none; }
@media (prefers-reduced-motion: reduce) {
  [data-reveal] { opacity: 1; transform: none; }
}

/* ---------- 8. EMPRESA ---------- */
.empresa {
  display: grid;
  grid-template-columns: 1.4fr 1fr;
  gap: var(--space-9);
  align-items: start;
}
.empresa__text { display: grid; gap: var(--space-5); }
.empresa__body { font-size: var(--step-1); color: var(--gray-200); max-width: 56ch; }
.empresa__bio { font-family: var(--ff-mono); font-size: var(--step--1); color: var(--gray-300); max-width: 56ch; }
.empresa__bio strong { color: var(--white); font-weight: 500; }
.empresa__photo {
  filter: grayscale(1) contrast(1.05);
  overflow: hidden;
  aspect-ratio: 4 / 5;
}
.empresa__photo img { width: 100%; height: 100%; object-fit: cover; }
@media (max-width: 1023px) {
  .empresa { grid-template-columns: 1fr; gap: var(--space-7); }
  .empresa__photo { max-width: 420px; }
}

/* ---------- 9. PARCERIA ---------- */
.parceria-section { background: var(--gray-900); border-top-color: var(--gray-800); }
.parceria {
  display: grid;
  grid-template-columns: 240px 1fr;
  gap: var(--space-8);
  align-items: center;
  padding: var(--space-7);
  border: 1px solid var(--gray-800);
}
.parceria__logo img {
  width: 100%; height: auto;
  filter: brightness(1.2);
}
.parceria__text { display: grid; gap: var(--space-4); }
.parceria__text h2 { font-size: var(--step-4); }
.parceria__text p { color: var(--gray-200); max-width: 60ch; }
.parceria__link {
  display: inline-block;
  margin-top: var(--space-2);
  border-bottom: 1px solid var(--gray-600);
  padding-bottom: 2px;
  transition: border-color 0.3s, color 0.3s;
}
.parceria__link:hover { color: var(--white); border-color: var(--white); }
.white { color: var(--white); }
@media (max-width: 767px) {
  .parceria { grid-template-columns: 1fr; padding: var(--space-5); }
  .parceria__logo img { max-width: 180px; }
}

/* ---------- 10. PROJECTS ---------- */
.project { display: grid; gap: var(--space-7); margin-bottom: var(--space-10); }
.project--hero { grid-template-columns: 1fr; gap: var(--space-6); }
.project__cover { aspect-ratio: 16/9; overflow: hidden; border: 1px solid var(--gray-800); }
.project__cover img { width: 100%; height: 100%; object-fit: cover; }
.project__head { display: flex; align-items: baseline; gap: var(--space-5); flex-wrap: wrap; }
.project__title { font-size: var(--step-5); font-weight: 700; letter-spacing: var(--tt-tight); }
.project__year { color: var(--gray-400); }
.project__lede { font-size: var(--step-1); color: var(--gray-200); max-width: 70ch; margin-top: var(--space-3); }
.project__stats { display: flex; gap: var(--space-7); margin-block: var(--space-5); }
.stat__num { font-family: var(--ff-mono); font-size: var(--step-6); font-weight: 500; line-height: 1; display: block; }
.stat__label { display: block; margin-top: var(--space-2); }
.project__clients {
  list-style: none; display: flex; flex-wrap: wrap; gap: var(--space-4);
  font-family: var(--ff-mono); font-size: var(--step--1); color: var(--gray-300);
}
.project__clients li::after { content: '·'; margin-left: var(--space-4); color: var(--gray-600); }
.project__clients li:last-child::after { content: ''; }
.project__stack {
  list-style: none; display: flex; flex-wrap: wrap; gap: var(--space-3); margin-top: var(--space-4);
}
.project__stack li {
  font-family: var(--ff-mono); font-size: var(--step--1);
  padding: 4px 10px; border: 1px solid var(--gray-700); color: var(--gray-200);
}
.project__cta {
  display: inline-flex; gap: var(--space-3); align-items: center;
  margin-top: var(--space-6);
  font-family: var(--ff-mono); font-size: var(--step-0); text-transform: uppercase; letter-spacing: var(--tt-mono);
  padding: var(--space-3) var(--space-5);
  border: 1px solid var(--white); color: var(--white);
  transition: background 0.2s, color 0.2s;
}
.project__cta:hover { background: var(--white); color: var(--black); }

/* ---------- 10b. PROJECT SPLIT ---------- */
.project--split { grid-template-columns: 1.1fr 1fr; align-items: center; }
.project--reverse .project__mosaic { order: 2; }
.project__mosaic {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-2);
}
.project__mosaic img {
  width: 100%; aspect-ratio: 1/1; object-fit: cover;
  border: 1px solid var(--gray-800);
}
.project__mosaic img:first-child { grid-column: 1 / -1; aspect-ratio: 16/9; }
.project__mosaic--single { grid-template-columns: 1fr; }
.project__mosaic--single img { aspect-ratio: 4/3; }
.project__cta-link {
  display: inline-block;
  margin-top: var(--space-5);
  border-bottom: 1px solid var(--gray-600);
  padding-bottom: 2px;
  transition: border-color 0.3s, color 0.3s;
}
.project__cta-link:hover { color: var(--white); border-color: var(--white); }
@media (max-width: 1023px) {
  .project--split { grid-template-columns: 1fr; }
  .project--reverse .project__mosaic { order: 0; }
}

/* ---------- 11. STACK ---------- */
.stack { display: grid; grid-template-columns: 1fr 1fr; gap: var(--space-9); }
.stack__heading { margin-bottom: var(--space-5); color: var(--white); }
.stack__list { list-style: none; display: grid; gap: var(--space-3); font-family: var(--ff-mono); font-size: var(--step-0); color: var(--gray-200); }
.stack__list li { padding-left: var(--space-5); position: relative; }
.stack__list li::before { content: '/'; position: absolute; left: 0; color: var(--gray-500); }
@media (max-width: 767px) { .stack { grid-template-columns: 1fr; gap: var(--space-7); } }

/* ---------- 12. CONTATO ---------- */
.contato-section { padding-block: var(--space-10); }
.contato { display: grid; gap: var(--space-7); }
.contato__head { max-width: 14ch; }
.contato__links { list-style: none; display: grid; gap: var(--space-4); margin-top: var(--space-5); }
.contato__links a {
  display: grid; grid-template-columns: 140px 1fr;
  align-items: baseline;
  padding-block: var(--space-4);
  border-bottom: 1px solid var(--gray-800);
  font-size: var(--step-2);
  transition: border-color 0.3s, color 0.3s;
  position: relative;
  overflow: hidden;
}
.contato__links a > span:first-child {
  font-family: var(--ff-mono); font-size: var(--step--1);
  text-transform: uppercase; letter-spacing: var(--tt-mono); color: var(--gray-400);
}
.contato__value { font-weight: 500; }
.contato__links a::after {
  content: '→';
  position: absolute; right: 0; bottom: 50%; transform: translateY(50%);
  font-family: var(--ff-mono); color: var(--gray-500);
  transition: transform 0.3s, color 0.3s;
}
.contato__links a:hover { border-color: var(--white); color: var(--white); }
.contato__links a:hover::after { transform: translate(8px, 50%); color: var(--white); }

/* ---------- 13. FOOTER ---------- */
.footer { padding: var(--space-6) 0; border-top: 1px solid var(--gray-800); }
.footer__inner { display: flex; justify-content: space-between; align-items: center; }
@media (max-width: 600px) {
  .contato__links a { grid-template-columns: 1fr; gap: var(--space-2); }
}