/* ============================================================
   Douglas Ribeiro — portfolio
   Escuro neutro, um acento só, sem gradiente decorativo.
   ============================================================ */

:root {
  --bg:        #0b0b0c;
  --bg-alt:    #0f0f11;
  --surface:   #151517;
  --line:      #26262a;
  --line-soft: #1c1c1f;

  --ink:       #e9e7e2;
  --ink-mid:   #a5a29b;
  --ink-dim:   #6f6c66;

  --accent:    #ff4d1c;
  --accent-dim:#ff4d1c26;
  --signal:    #4ade80;

  --sans: 'Archivo', system-ui, -apple-system, 'Segoe UI', sans-serif;
  --mono: 'IBM Plex Mono', ui-monospace, 'Cascadia Code', monospace;

  --wrap: 1140px;
  --r: 10px;
}

* { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  background: var(--bg);
  color: var(--ink);
  font-family: var(--sans);
  font-size: 16px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

/* ruído sutil, sem virar textura chamativa */
body::before {
  content: '';
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 1;
  opacity: 0.022;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='140' height='140'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.85' numOctaves='3'/%3E%3C/filter%3E%3Crect width='140' height='140' filter='url(%23n)'/%3E%3C/svg%3E");
}

img { max-width: 100%; display: block; }

a { color: inherit; }

.wrap {
  width: 100%;
  max-width: var(--wrap);
  margin: 0 auto;
  padding: 0 28px;
}

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

.skip {
  position: absolute;
  left: -9999px;
}
.skip:focus {
  left: 16px; top: 16px;
  z-index: 100;
  background: var(--accent);
  color: #fff;
  padding: 10px 16px;
  border-radius: var(--r);
}

/* ---------- NAV ---------- */

.nav {
  position: sticky;
  top: 0;
  z-index: 50;
  display: flex;
  align-items: center;
  gap: 32px;
  padding: 16px 28px;
  background: color-mix(in srgb, var(--bg) 88%, transparent);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--line-soft);
}

.brand {
  font-family: var(--mono);
  font-size: 14px;
  font-weight: 500;
  text-decoration: none;
  letter-spacing: -0.01em;
}
.brand span { color: var(--ink-dim); }

.nav-links {
  display: flex;
  gap: 26px;
  margin-left: auto;
  font-size: 14px;
}
.nav-links a {
  color: var(--ink-mid);
  text-decoration: none;
  transition: color .15s;
}
.nav-links a:hover,
.nav-links a.active { color: var(--ink); }

/* ---------- BOTÕES ---------- */

.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 11px 20px;
  border: 1px solid var(--line);
  border-radius: var(--r);
  font-size: 14px;
  font-weight: 500;
  text-decoration: none;
  color: var(--ink);
  background: transparent;
  transition: border-color .15s, background .15s, transform .15s;
}
.btn:hover {
  border-color: var(--ink-dim);
  background: var(--surface);
}
.btn:active { transform: translateY(1px); }

.btn-primary {
  background: var(--accent);
  border-color: var(--accent);
  color: #fff;
}
.btn-primary:hover {
  background: #ff5f33;
  border-color: #ff5f33;
}

.btn-sm { padding: 8px 15px; font-size: 13px; }

/* ---------- HERO ---------- */

.hero {
  padding: 108px 0 88px;
  position: relative;
  z-index: 2;
}

.hero h1 {
  margin: 0 0 26px;
  font-size: clamp(2.3rem, 6vw, 4.15rem);
  line-height: 1.06;
  letter-spacing: -0.035em;
  font-weight: 700;
  max-width: 22ch;
  text-wrap: balance;
}
.hero h1 em {
  font-style: normal;
  color: var(--accent);
}

.lead {
  margin: 0 0 34px;
  max-width: 62ch;
  font-size: 17px;
  color: var(--ink-mid);
}

.actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

/* ---------- SEÇÕES ---------- */

.section {
  position: relative;
  z-index: 2;
  padding: 104px 0;
}
.section.alt { background: var(--bg-alt); }

.tag {
  margin: 0 0 18px;
  font-family: var(--mono);
  font-size: 12.5px;
  color: var(--ink-dim);
  letter-spacing: 0.06em;
  text-transform: uppercase;
}

.section h2 {
  margin: 0 0 22px;
  font-size: clamp(1.8rem, 4vw, 2.7rem);
  line-height: 1.14;
  letter-spacing: -0.03em;
  font-weight: 700;
}
.section h2 em {
  font-style: normal;
  color: var(--accent);
}

.section-lead {
  margin: 0 0 52px;
  max-width: 66ch;
  color: var(--ink-mid);
  font-size: 16.5px;
}

/* ---------- CARDS DE ATUAÇÃO ---------- */

.grid-3 {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 18px;
}

.card {
  padding: 30px 26px 26px;
  background: var(--surface);
  border: 1px solid var(--line-soft);
  border-radius: var(--r);
  transition: border-color .2s, transform .2s;
}
.card:hover {
  border-color: var(--line);
  transform: translateY(-2px);
}

.card-idx {
  margin: 0 0 16px;
  font-family: var(--mono);
  font-size: 12.5px;
  color: var(--accent);
}
.card h3 {
  margin: 0 0 12px;
  font-size: 1.12rem;
  letter-spacing: -0.015em;
}
.card p {
  margin: 0 0 18px;
  font-size: 14.7px;
  color: var(--ink-mid);
}

/* ---------- CHIPS ---------- */

.chips {
  display: flex;
  flex-wrap: wrap;
  gap: 7px;
  margin: 18px 0 0 !important;
}
.chips span {
  padding: 5px 10px;
  border: 1px solid var(--line);
  border-radius: 6px;
  font-family: var(--mono);
  font-size: 11.5px;
  color: var(--ink-mid);
}

/* ---------- PROJETOS ---------- */

.proj {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 56px;
  align-items: center;
  padding: 56px 0;
  border-top: 1px solid var(--line-soft);
}
.proj:last-child { border-bottom: 1px solid var(--line-soft); }
.proj.reverse .proj-body { order: 2; }

.proj-meta {
  display: flex;
  align-items: center;
  gap: 12px;
  margin: 0 0 16px;
  font-family: var(--mono);
  font-size: 12px;
  color: var(--ink-dim);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}
.proj-meta .idx {
  font-size: 12px;
  color: var(--accent);
}

.badge {
  padding: 3px 9px;
  border: 1px solid var(--line);
  border-radius: 5px;
  font-size: 10.5px;
  letter-spacing: 0.06em;
}
.badge.live {
  color: var(--signal);
  border-color: color-mix(in srgb, var(--signal) 35%, transparent);
}

.proj h3 {
  margin: 0 0 16px;
  font-size: clamp(1.35rem, 2.4vw, 1.75rem);
  letter-spacing: -0.025em;
  line-height: 1.2;
}
.proj-body > p {
  margin: 0 0 15px;
  color: var(--ink-mid);
  font-size: 15.3px;
}

.facts {
  margin: 22px 0 0;
  padding: 0;
  list-style: none;
  border-top: 1px solid var(--line-soft);
}
.facts li {
  padding: 11px 0;
  border-bottom: 1px solid var(--line-soft);
  font-size: 14.3px;
  color: var(--ink-dim);
}
.facts b {
  color: var(--ink);
  font-family: var(--mono);
  font-size: 13.5px;
  font-weight: 500;
  margin-right: 10px;
}

.links {
  margin: 22px 0 0 !important;
  font-size: 14.5px;
}
.links a {
  color: var(--accent);
  text-decoration: none;
  border-bottom: 1px solid transparent;
  transition: border-color .15s;
}
.links a:hover { border-bottom-color: var(--accent); }
.links .muted {
  font-family: var(--mono);
  font-size: 12.5px;
  color: var(--ink-dim);
}

.proj-shot {
  border: 1px solid var(--line-soft);
  border-radius: var(--r);
  overflow: hidden;
  background: var(--surface);
}
.proj-shot img { width: 100%; }

.proj-shot.placeholder {
  display: grid;
  place-items: center;
  min-height: 300px;
}
.ph-inner { text-align: center; }
.ph-num {
  margin: 0;
  font-size: 3rem;
  font-weight: 700;
  letter-spacing: -0.04em;
  color: var(--accent);
}
.ph-label {
  margin: 8px 0 0;
  font-family: var(--mono);
  font-size: 12.5px;
  color: var(--ink-dim);
}

/* ---------- TIMELINE ---------- */

.timeline {
  margin: 0;
  padding: 0 0 0 26px;
  list-style: none;
  border-left: 1px solid var(--line);
}
.timeline li {
  position: relative;
  padding: 0 0 40px 8px;
}
.timeline li::before {
  content: '';
  position: absolute;
  left: -33px;
  top: 7px;
  width: 9px; height: 9px;
  border-radius: 50%;
  background: var(--bg);
  border: 1px solid var(--line);
}
.timeline li:first-child::before {
  background: var(--accent);
  border-color: var(--accent);
}
.when {
  margin: 0 0 6px;
  font-family: var(--mono);
  font-size: 12.5px;
  color: var(--ink-dim);
}
.timeline h3 {
  margin: 0 0 10px;
  font-size: 1.08rem;
  letter-spacing: -0.015em;
}
.timeline h3 span {
  font-weight: 400;
  color: var(--accent);
}
.timeline li p:last-child {
  margin: 0;
  max-width: 68ch;
  color: var(--ink-mid);
  font-size: 15px;
}

.about-facts {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 18px;
  margin-top: 40px;
  padding-top: 34px;
  border-top: 1px solid var(--line-soft);
}
.about-facts .k {
  margin: 0 0 6px;
  font-family: var(--mono);
  font-size: 11.5px;
  color: var(--ink-dim);
  text-transform: uppercase;
  letter-spacing: 0.06em;
}
.about-facts .v {
  margin: 0;
  font-size: 14.5px;
  color: var(--ink);
}

/* ---------- FOTO ---------- */

.hero-grid {
  display: grid;
  grid-template-columns: 1fr 290px;
  gap: 64px;
  align-items: center;
}

.portrait {
  margin: 0;
  aspect-ratio: 4 / 5;
  border: 1px solid var(--line);
  border-radius: var(--r);
  overflow: hidden;
  background: var(--surface);
}
.portrait img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

/* ---------- CONTATO / RODAPÉ ---------- */

.contato .section-lead { margin-bottom: 34px; }

.foot {
  position: relative;
  z-index: 2;
  padding: 26px 0;
  border-top: 1px solid var(--line-soft);
}
.foot .wrap {
  display: flex;
  justify-content: space-between;
  align-items: center;
}
.foot p {
  margin: 0;
  font-size: 13px;
  color: var(--ink-dim);
}

/* ---------- REVEAL ---------- */

.rv {
  opacity: 0;
  transform: translateY(14px);
  transition: opacity .6s ease, transform .6s ease;
}
.rv.in {
  opacity: 1;
  transform: none;
}

/* ---------- RESPONSIVO ---------- */

@media (max-width: 940px) {
  .nav-links { display: none; }
  .nav .btn { margin-left: auto; }
  .grid-3 { grid-template-columns: 1fr; }
  .proj { grid-template-columns: 1fr; gap: 30px; }
  .proj.reverse .proj-body { order: 0; }
  .about-facts { grid-template-columns: repeat(2, 1fr); }
  .hero-grid { grid-template-columns: 1fr; gap: 40px; }
  .portrait { max-width: 240px; margin-inline: auto; aspect-ratio: 1; }
  .contato .actions { justify-content: center; }
  .contato { text-align: center; }
  .contato .section-lead { margin-inline: auto; }
}

@media (max-width: 560px) {
  .wrap { padding: 0 20px; }
  .hero { padding-top: 64px; }
  .section { padding: 72px 0; }
  .about-facts { grid-template-columns: 1fr; }
  .foot .wrap { flex-direction: column; gap: 8px; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .rv { opacity: 1; transform: none; transition: none; }
  * { animation-duration: .01ms !important; transition-duration: .01ms !important; }
}