/* ============================================================
   JPX — Design System
   preto profundo / grafite / branco / azul elétrico → violeta
   Clash Display · Satoshi · JetBrains Mono
   ============================================================ */

:root {
  /* cor */
  --bg: #060608;
  --bg-alt: #0A0A0E;
  --surface: #101016;
  --surface-2: #15151D;
  --line: rgba(255, 255, 255, 0.08);
  --line-strong: rgba(255, 255, 255, 0.14);
  --text: #F5F5F7;
  --muted: #9B9BA6;
  --dim: #62626E;
  --blue: #4D6BFE;
  --violet: #8B5CF6;
  --grad: linear-gradient(120deg, #4D6BFE 0%, #8B5CF6 100%);
  --wa: #25D366;

  /* tipo */
  --font-display: "Clash Display", "Satoshi", system-ui, sans-serif;
  --font-body: "Satoshi", system-ui, -apple-system, sans-serif;
  --font-mono: "JetBrains Mono", ui-monospace, monospace;

  /* ritmo */
  --container: 72rem;
  --pad: clamp(1.25rem, 4vw, 2.5rem);
  --section: clamp(5rem, 12vh, 8.5rem);
  --radius: 16px;

  /* movimento */
  --ease: cubic-bezier(0.22, 1, 0.36, 1);
  --t-fast: 0.2s;
  --t-med: 0.45s;
}

/* ---------- reset ---------- */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

html {
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}

body {
  background: var(--bg);
  color: var(--text);
  font-family: var(--font-body);
  font-size: 1rem;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

img, svg { display: block; max-width: 100%; }
a { color: inherit; text-decoration: none; }
ul { list-style: none; }
button { font: inherit; color: inherit; background: none; border: none; cursor: pointer; }

::selection { background: rgba(77, 107, 254, 0.35); color: #fff; }

:focus-visible {
  outline: 2px solid var(--blue);
  outline-offset: 3px;
  border-radius: 4px;
}

section { scroll-margin-top: 5rem; }

/* ---------- utilitários ---------- */
.container {
  max-width: var(--container);
  margin-inline: auto;
  padding-inline: var(--pad);
}

.mono {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  letter-spacing: 0.04em;
}

.grad {
  font-style: normal;
  background: var(--grad);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.skip-link {
  position: fixed;
  top: -100%;
  left: 1rem;
  z-index: 200;
  padding: 0.6rem 1rem;
  background: var(--surface);
  border: 1px solid var(--line-strong);
  border-radius: 8px;
  transition: top var(--t-fast) var(--ease);
}
.skip-link:focus { top: 1rem; }

/* barra de progresso */
.progress {
  position: fixed;
  inset: 0 0 auto 0;
  height: 2px;
  z-index: 120;
  background: transparent;
}
.progress span {
  display: block;
  height: 100%;
  width: 0%;
  background: var(--grad);
}

/* ---------- botões ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  min-height: 44px;
  padding: 0.7rem 1.5rem;
  border-radius: 999px;
  font-weight: 500;
  font-size: 0.95rem;
  border: 1px solid var(--line-strong);
  transition: transform var(--t-fast) var(--ease),
              box-shadow var(--t-fast) var(--ease),
              background-color var(--t-fast) var(--ease),
              border-color var(--t-fast) var(--ease);
  cursor: pointer;
}
.btn:active { transform: scale(0.97); }

.btn--primary {
  background: var(--grad);
  border: none;
  color: #fff;
  box-shadow: 0 0 0 0 rgba(77, 107, 254, 0);
}
.btn--primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 32px -8px rgba(77, 107, 254, 0.55);
}

.btn--ghost { background: transparent; color: var(--text); }
.btn--ghost:hover { border-color: var(--text); transform: translateY(-2px); }

.btn--small { min-height: 38px; padding: 0.45rem 1.1rem; font-size: 0.875rem; }
.btn--big { min-height: 54px; padding: 0.9rem 2.2rem; font-size: 1.05rem; }

/* ---------- nav ---------- */
.nav {
  position: fixed;
  inset: 0 0 auto 0;
  z-index: 100;
  transition: background-color var(--t-med) var(--ease),
              border-color var(--t-med) var(--ease),
              backdrop-filter var(--t-med) var(--ease);
  border-bottom: 1px solid transparent;
}
.nav.is-scrolled {
  background: rgba(6, 6, 8, 0.72);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border-bottom-color: var(--line);
}

.nav__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 4.5rem;
}

.nav__logo {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1.35rem;
  letter-spacing: 0.02em;
}
.nav__logo-x {
  background: var(--grad);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.nav__links {
  display: flex;
  align-items: center;
  gap: 2rem;
}

.nav__link {
  position: relative;
  font-size: 0.92rem;
  color: var(--muted);
  padding: 0.5rem 0;
  transition: color var(--t-fast) var(--ease);
}
.nav__link::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: 0.2rem;
  width: 100%;
  height: 1px;
  background: var(--grad);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform var(--t-fast) var(--ease);
}
.nav__link:hover, .nav__link.is-active { color: var(--text); }
.nav__link:hover::after, .nav__link.is-active::after { transform: scaleX(1); }

.nav__toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 6px;
  width: 44px;
  height: 44px;
  align-items: center;
}
.nav__toggle span {
  display: block;
  width: 22px;
  height: 1.5px;
  background: var(--text);
  transition: transform var(--t-fast) var(--ease), opacity var(--t-fast);
}

/* ---------- hero ---------- */
.hero {
  position: relative;
  min-height: 100svh;
  display: flex;
  align-items: center;
  overflow: hidden;
  padding-top: 4.5rem;
}

.hero__grid {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(255,255,255,0.035) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,0.035) 1px, transparent 1px);
  background-size: 72px 72px;
  mask-image: radial-gradient(ellipse 90% 80% at 50% 40%, #000 30%, transparent 75%);
  -webkit-mask-image: radial-gradient(ellipse 90% 80% at 50% 40%, #000 30%, transparent 75%);
  pointer-events: none;
}

.hero__x {
  position: absolute;
  right: -6%;
  top: 50%;
  translate: 0 -50%;
  width: min(46vw, 560px);
  height: auto;
  opacity: 0.16;
  filter: drop-shadow(0 0 60px rgba(77, 107, 254, 0.35));
  pointer-events: none;
}
.hero__x-stroke {
  stroke-dasharray: 460;
  stroke-dashoffset: 460;
  animation: xdraw 1.1s var(--ease) 0.35s forwards;
}
.hero__x-stroke--2 { animation-delay: 0.65s; }

@keyframes xdraw { to { stroke-dashoffset: 0; } }

.hero__content { position: relative; z-index: 1; width: 100%; }

.hero__status {
  display: inline-flex;
  align-items: center;
  gap: 0.55rem;
  font-size: 0.82rem;
  color: var(--muted);
  border: 1px solid var(--line);
  border-radius: 999px;
  padding: 0.4rem 0.95rem;
  margin-bottom: 2rem;
  background: rgba(255, 255, 255, 0.02);
}
.hero__dot {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: #34D399;
  box-shadow: 0 0 10px rgba(52, 211, 153, 0.8);
  animation: pulse 2.2s ease-in-out infinite;
}
@keyframes pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.35; }
}

.hero__title {
  font-family: var(--font-display);
  font-weight: 600;
  font-size: clamp(2.6rem, 7.5vw, 5.6rem);
  line-height: 1.04;
  letter-spacing: -0.02em;
  margin-bottom: 1.75rem;
}
.hero__line { display: block; }

.hero__sub {
  max-width: 34rem;
  color: var(--muted);
  font-size: clamp(1rem, 1.6vw, 1.15rem);
  margin-bottom: 2.5rem;
}

.hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
  margin-bottom: 2.75rem;
}

.hero__meta { color: var(--dim); }
.hero__plus { color: var(--blue); }
.hero__sep { margin-inline: 0.5rem; color: var(--dim); }

.hero__scroll {
  position: absolute;
  bottom: 2rem;
  left: 50%;
  translate: -50% 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.6rem;
  color: var(--dim);
  font-size: 0.7rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  z-index: 1;
}
.hero__scroll-line {
  width: 1px;
  height: 44px;
  background: linear-gradient(var(--dim), transparent);
  overflow: hidden;
  position: relative;
}
.hero__scroll-line::after {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(var(--blue), transparent);
  transform: translateY(-100%);
  animation: scrollhint 2s var(--ease) infinite;
}
@keyframes scrollhint {
  0% { transform: translateY(-100%); }
  60%, 100% { transform: translateY(100%); }
}

/* animação de entrada do hero */
.reveal-load {
  opacity: 0;
  transform: translateY(24px);
  animation: rise 0.8s var(--ease) forwards;
  animation-delay: calc(var(--d, 0) * 0.12s);
}
@keyframes rise {
  to { opacity: 1; transform: none; }
}

/* ---------- marquee ---------- */
.marquee {
  border-block: 1px solid var(--line);
  overflow: hidden;
  padding-block: 1rem;
  background: var(--bg-alt);
}
.marquee__track {
  display: flex;
  align-items: center;
  gap: 2.25rem;
  width: max-content;
  color: var(--dim);
  text-transform: uppercase;
  letter-spacing: 0.14em;
  animation: marquee 36s linear infinite;
}
.marquee__track i { color: var(--blue); font-style: normal; }
@keyframes marquee {
  to { transform: translateX(-50%); }
}

/* ---------- seções ---------- */
.section { padding-block: var(--section); }
.section--alt { background: var(--bg-alt); }

.section__head { margin-bottom: clamp(3rem, 6vw, 4.5rem); }

.eyebrow {
  color: var(--blue);
  text-transform: lowercase;
  margin-bottom: 1.1rem;
}
.eyebrow span { margin-right: 0.35rem; }
.eyebrow--center { text-align: center; }

.section__title {
  font-family: var(--font-display);
  font-weight: 600;
  font-size: clamp(1.9rem, 4.5vw, 3.2rem);
  line-height: 1.12;
  letter-spacing: -0.015em;
}

/* ---------- cards base ---------- */
.card {
  position: relative;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  overflow: hidden;
  transition: border-color var(--t-med) var(--ease), transform var(--t-med) var(--ease);
}
.card::after {
  content: "";
  position: absolute;
  inset: 0;
  border-radius: inherit;
  background: radial-gradient(360px circle at var(--mx, 50%) var(--my, 50%),
              rgba(77, 107, 254, 0.09), transparent 65%);
  opacity: 0;
  transition: opacity var(--t-med) var(--ease);
  pointer-events: none;
}
.card:hover { border-color: var(--line-strong); }
.card:hover::after { opacity: 1; }

/* ---------- problemas ---------- */
.problems {
  border-top: 1px solid var(--line);
  max-width: 56rem;
}
.problems__item { border-bottom: 1px solid var(--line); }
.problems__item a {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1.5rem;
  padding: 1.35rem 0.5rem;
  transition: padding-left var(--t-fast) var(--ease), background-color var(--t-fast) var(--ease);
}
.problems__text {
  font-family: var(--font-display);
  font-weight: 500;
  font-size: clamp(1.05rem, 2.2vw, 1.45rem);
  color: var(--muted);
  transition: color var(--t-fast) var(--ease);
}
.problems__hint {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  color: var(--dim);
  opacity: 0;
  transform: translateX(-8px);
  transition: opacity var(--t-fast) var(--ease), transform var(--t-fast) var(--ease), color var(--t-fast);
  white-space: nowrap;
}
.problems__item a:hover,
.problems__item a:focus-visible {
  padding-left: 1.25rem;
}
.problems__item a:hover .problems__text,
.problems__item a:focus-visible .problems__text { color: var(--text); }
.problems__item a:hover .problems__hint,
.problems__item a:focus-visible .problems__hint {
  opacity: 1;
  transform: none;
  color: var(--blue);
}

/* em telas de toque a dica fica sempre visível */
@media (hover: none) {
  .problems__hint { opacity: 1; transform: none; }
}

/* ---------- serviços ---------- */
.services {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1.25rem;
}

.service { padding: 2rem; }

.service__code {
  position: absolute;
  top: 1.5rem;
  right: 1.75rem;
  color: var(--dim);
}

.service__icon {
  display: grid;
  place-items: center;
  width: 56px;
  height: 56px;
  border-radius: 14px;
  border: 1px solid var(--line-strong);
  background: linear-gradient(160deg, rgba(77,107,254,0.12), rgba(139,92,246,0.05));
  color: var(--blue);
  margin-bottom: 1.5rem;
  transition: transform var(--t-med) var(--ease);
}
.service:hover .service__icon { transform: translateY(-4px) rotate(-3deg); }

.service__title {
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 1.35rem;
  margin-bottom: 0.6rem;
}

.service__desc {
  color: var(--muted);
  font-size: 0.95rem;
  margin-bottom: 1.4rem;
}

.chips {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
}
.chips li {
  font-size: 0.78rem;
  color: var(--muted);
  border: 1px solid var(--line);
  border-radius: 999px;
  padding: 0.28rem 0.75rem;
  transition: border-color var(--t-fast) var(--ease), color var(--t-fast) var(--ease);
}
.chips li:hover { border-color: var(--blue); color: var(--text); }
.chips--mono li { font-family: var(--font-mono); font-size: 0.72rem; letter-spacing: 0.03em; }

/* ---------- projetos ---------- */
.projects {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1.5rem;
}

.project { display: flex; flex-direction: column; }

.project__preview {
  margin: 1rem 1rem 0;
  border-radius: 10px;
  overflow: hidden;
  transition: transform var(--t-med) var(--ease);
}
.project:hover .project__preview { transform: translateY(-4px) scale(1.01); }

.project__info {
  padding: 1.5rem 1.75rem 1.75rem;
  display: flex;
  flex-direction: column;
  gap: 0.85rem;
  flex: 1;
}

.project__title {
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 1.3rem;
}

.project__desc {
  color: var(--muted);
  font-size: 0.92rem;
  flex: 1;
}

.project__link {
  display: inline-flex;
  align-items: center;
  gap: 0.45rem;
  font-weight: 500;
  font-size: 0.92rem;
  color: var(--text);
  width: fit-content;
  padding-block: 0.35rem;
  position: relative;
}
.project__link::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: 0;
  height: 1px;
  width: 100%;
  background: var(--grad);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform var(--t-fast) var(--ease);
}
.project__link:hover::after { transform: scaleX(1); }
.project__link svg { transition: transform var(--t-fast) var(--ease); }
.project__link:hover svg { transform: translate(2px, -2px); }

/* --- mockups de navegador --- */
.mock {
  --m-bg: #101016;
  --m-fg: rgba(255, 255, 255, 0.14);
  --m-accent: var(--blue);
  background: var(--m-bg);
  border: 1px solid var(--line);
  aspect-ratio: 16 / 9.5;
  display: flex;
  flex-direction: column;
}

.mock__bar {
  display: flex;
  align-items: center;
  gap: 5px;
  padding: 8px 10px;
  border-bottom: 1px solid rgba(120, 120, 140, 0.18);
  flex-shrink: 0;
}
.mock__bar i {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--m-fg);
  opacity: 0.7;
}
.mock__url {
  margin-left: 8px;
  font-size: 0.6rem;
  color: var(--m-fg);
  background: rgba(120, 120, 140, 0.12);
  border-radius: 4px;
  padding: 2px 8px;
  letter-spacing: 0.02em;
}

.mock__body {
  flex: 1;
  padding: 12px 14px;
  display: flex;
  flex-direction: column;
  gap: 10px;
  min-height: 0;
}

.mock__nav {
  height: 8px;
  width: 42%;
  border-radius: 4px;
  background: var(--m-fg);
}

.mock__hero {
  display: flex;
  flex-direction: column;
  gap: 7px;
  padding-block: 6px;
}
.mock__title {
  height: 14px;
  width: 68%;
  border-radius: 4px;
  background: linear-gradient(90deg, var(--m-accent), color-mix(in srgb, var(--m-accent) 55%, transparent));
}
.mock__text { height: 7px; width: 52%; border-radius: 4px; background: var(--m-fg); }
.mock__btn {
  height: 12px;
  width: 26%;
  border-radius: 999px;
  background: var(--m-accent);
  margin-top: 3px;
}

.mock__cards {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 8px;
  flex: 1;
  min-height: 0;
}
.mock__cards i {
  border-radius: 6px;
  background: color-mix(in srgb, var(--m-fg) 55%, transparent);
  border: 1px solid color-mix(in srgb, var(--m-accent) 30%, transparent);
}

/* temas por projeto — cores reais de cada marca */
.mock--pet     { --m-bg: #F5F1E8; --m-fg: rgba(46, 60, 45, 0.22); --m-accent: #3E8E5F; }
.mock--v12     { --m-bg: #0B0B0B; --m-fg: rgba(255, 255, 255, 0.16); --m-accent: #C9A24B; }
.mock--takeshi { --m-bg: #FAF6EF; --m-fg: rgba(60, 50, 35, 0.2);  --m-accent: #C6A05C; }
.mock--matta   { --m-bg: #111010; --m-fg: rgba(255, 255, 255, 0.15); --m-accent: #B08D3E; }

.mock--pet .mock__url,
.mock--takeshi .mock__url { background: rgba(0, 0, 0, 0.06); }

/* ---------- diferenciais ---------- */
.edge {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  overflow: hidden;
}

.edge__item {
  background: var(--surface);
  padding: 1.6rem 1.5rem;
  position: relative;
  transition: background-color var(--t-med) var(--ease);
}
.edge__item::before {
  content: "+";
  font-family: var(--font-mono);
  color: var(--dim);
  display: block;
  margin-bottom: 0.8rem;
  transition: color var(--t-fast) var(--ease);
}
.edge__item:hover { background: var(--surface-2); }
.edge__item:hover::before { color: var(--blue); }

.edge__item h3 {
  font-family: var(--font-display);
  font-weight: 500;
  font-size: 1.02rem;
  margin-bottom: 0.35rem;
}
.edge__item p {
  color: var(--dim);
  font-size: 0.85rem;
  line-height: 1.5;
}

/* ---------- tecnologias ---------- */
.stack {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  overflow: hidden;
}

.stack__item {
  background: var(--bg);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 0.8rem;
  padding: 1.9rem 1rem;
  color: var(--muted);
  transition: background-color var(--t-med) var(--ease), color var(--t-med) var(--ease);
}
.stack__item svg {
  width: 30px;
  height: 30px;
  color: var(--dim);
  transition: color var(--t-med) var(--ease), transform var(--t-med) var(--ease),
              filter var(--t-med) var(--ease);
}
.stack__item span {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.04em;
  text-align: center;
}
.stack__item:hover { background: var(--surface); color: var(--text); }
.stack__item:hover svg {
  color: var(--blue);
  transform: translateY(-3px);
  filter: drop-shadow(0 6px 16px rgba(77, 107, 254, 0.45));
}

/* ---------- sobre ---------- */
.sobre {
  display: grid;
  grid-template-columns: 1.4fr 1fr;
  gap: clamp(2rem, 6vw, 5rem);
  align-items: start;
}

.sobre__text p {
  color: var(--muted);
  max-width: 34rem;
  margin-bottom: 1.25rem;
}
.sobre__text .section__title { margin-bottom: 1.75rem; }
.sobre__text .btn { margin-top: 0.75rem; }

.sobre__card { padding: 2rem; }

.sobre__facts {
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
}
.sobre__facts div {
  display: grid;
  grid-template-columns: 6rem 1fr;
  gap: 1rem;
  align-items: start;
}
.sobre__facts div + div {
  border-top: 1px solid var(--line);
  padding-top: 1.5rem;
}
.sobre__facts dt { color: var(--blue); }
.sobre__facts dd { color: var(--muted); line-height: 1.7; }

/* ---------- CTA final ---------- */
.cta {
  padding-block: var(--section);
  position: relative;
  overflow: hidden;
  border-top: 1px solid var(--line);
}
.cta::before {
  content: "";
  position: absolute;
  inset: auto 0 -50% 0;
  height: 100%;
  background: radial-gradient(ellipse 55% 90% at 50% 100%,
              rgba(77, 107, 254, 0.14), transparent 70%);
  pointer-events: none;
}

.cta__inner {
  position: relative;
  text-align: center;
  display: flex;
  flex-direction: column;
  align-items: center;
}

.cta__title {
  font-family: var(--font-display);
  font-weight: 600;
  font-size: clamp(2rem, 5.5vw, 3.8rem);
  line-height: 1.1;
  letter-spacing: -0.015em;
  margin-bottom: 1.25rem;
}

.cta__sub {
  color: var(--muted);
  max-width: 30rem;
  margin-bottom: 2.25rem;
}

/* ---------- footer ---------- */
.footer {
  border-top: 1px solid var(--line);
  background: var(--bg-alt);
  padding-top: 4rem;
}

.footer__inner {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr;
  gap: 2.5rem;
  padding-bottom: 3rem;
}

.footer__logo {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1.6rem;
  margin-bottom: 0.6rem;
}
.footer__tagline { color: var(--muted); font-size: 0.95rem; max-width: 18rem; }

.footer__label {
  color: var(--dim);
  text-transform: lowercase;
  margin-bottom: 1.1rem;
}

.footer__nav { display: flex; flex-direction: column; align-items: flex-start; gap: 0.6rem; }
.footer__nav a {
  color: var(--muted);
  font-size: 0.92rem;
  transition: color var(--t-fast) var(--ease);
  padding-block: 0.15rem;
}
.footer__nav a:hover { color: var(--text); }

.footer__icons { display: flex; gap: 0.75rem; }
.footer__icons a {
  display: grid;
  place-items: center;
  width: 44px;
  height: 44px;
  border: 1px solid var(--line);
  border-radius: 12px;
  color: var(--muted);
  transition: color var(--t-fast) var(--ease), border-color var(--t-fast) var(--ease),
              transform var(--t-fast) var(--ease);
}
.footer__icons a:hover {
  color: var(--text);
  border-color: var(--line-strong);
  transform: translateY(-3px);
}

.footer__bottom {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 0.75rem;
  padding-block: 1.5rem;
  border-top: 1px solid var(--line);
  color: var(--dim);
}
.footer__made span { color: var(--blue); }

/* ---------- flutuantes ---------- */
.float-wa {
  position: fixed;
  right: 1.4rem;
  bottom: 1.4rem;
  z-index: 90;
  display: grid;
  place-items: center;
  width: 56px;
  height: 56px;
  border-radius: 50%;
  background: var(--wa);
  color: #fff;
  box-shadow: 0 10px 30px -6px rgba(37, 211, 102, 0.5);
  transition: transform var(--t-fast) var(--ease), box-shadow var(--t-fast) var(--ease);
}
.float-wa::before {
  content: "";
  position: absolute;
  inset: 0;
  border-radius: inherit;
  border: 1.5px solid var(--wa);
  animation: waping 2.4s var(--ease) infinite;
}
@keyframes waping {
  0% { transform: scale(1); opacity: 0.9; }
  100% { transform: scale(1.55); opacity: 0; }
}
.float-wa:hover {
  transform: translateY(-3px) scale(1.05);
  box-shadow: 0 14px 38px -6px rgba(37, 211, 102, 0.65);
}

.to-top {
  position: fixed;
  right: 1.62rem;
  bottom: 6.4rem;
  z-index: 90;
  display: grid;
  place-items: center;
  width: 48px;
  height: 48px;
  border-radius: 50%;
  background: var(--surface);
  border: 1px solid var(--line-strong);
  color: var(--muted);
  opacity: 0;
  visibility: hidden;
  transform: translateY(12px);
  transition: opacity var(--t-med) var(--ease), transform var(--t-med) var(--ease),
              visibility var(--t-med), color var(--t-fast), border-color var(--t-fast);
}
.to-top.is-visible { opacity: 1; visibility: visible; transform: none; }
.to-top:hover { color: var(--text); border-color: var(--blue); }

/* ---------- reveal on scroll ---------- */
.reveal {
  opacity: 0;
  transform: translateY(32px);
  transition: opacity 0.8s var(--ease), transform 0.8s var(--ease);
  transition-delay: calc(var(--stagger, 0) * 90ms);
}
.reveal.is-visible { opacity: 1; transform: none; }

/* ============================================================
   responsivo — mobile first refinements
   ============================================================ */

@media (max-width: 900px) {
  .services { grid-template-columns: 1fr; }
  .projects { grid-template-columns: 1fr; }
  .edge { grid-template-columns: repeat(2, 1fr); }
  .stack { grid-template-columns: repeat(3, 1fr); }
  .sobre { grid-template-columns: 1fr; }
  .footer__inner { grid-template-columns: 1fr 1fr; }
  .hero__x { opacity: 0.08; right: -20%; }
}

@media (max-width: 640px) {
  .nav__links {
    position: fixed;
    inset: 0;
    background: rgba(6, 6, 8, 0.96);
    backdrop-filter: blur(18px);
    -webkit-backdrop-filter: blur(18px);
    flex-direction: column;
    justify-content: center;
    gap: 2.25rem;
    opacity: 0;
    visibility: hidden;
    transition: opacity var(--t-med) var(--ease), visibility var(--t-med);
  }
  .nav.is-open .nav__links { opacity: 1; visibility: visible; }
  .nav__link { font-size: 1.35rem; font-family: var(--font-display); color: var(--text); }
  .nav__cta { margin-top: 0.5rem; }

  .nav__toggle { display: flex; position: relative; z-index: 110; }
  .nav.is-open .nav__toggle span:nth-child(1) { transform: translateY(3.75px) rotate(45deg); }
  .nav.is-open .nav__toggle span:nth-child(2) { transform: translateY(-3.75px) rotate(-45deg); }

  .edge { grid-template-columns: 1fr; }
  .stack { grid-template-columns: repeat(2, 1fr); }
  .footer__inner { grid-template-columns: 1fr; gap: 2rem; }
  .footer__bottom { justify-content: center; text-align: center; }

  .hero__scroll { display: none; }
  .problems__hint svg { display: none; }
}

/* ---------- acessibilidade: reduzir movimento ---------- */
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
  .reveal, .reveal-load { opacity: 1; transform: none; }
  .hero__x-stroke { stroke-dashoffset: 0; }
  .marquee__track { animation: none; }
}