/* ==========================================================================
   Nícolas Almeida — Landing Page
   Sistema visual: "abyssal terminal" (teal profundo) com acento âmbar.
   Ver docs/specs/2026-08-17-landing-page-design.md
   ========================================================================== */

/* --------------------------------------------------------------- TOKENS */
:root {
  /* Superfícies / cores */
  --color-liquid-abyss:  #012624;
  --color-liquid-deep:   #011d1c;
  --color-liquid-kelp:   #003734;
  --color-liquid-mist:   #edfffe;
  --color-platinum:      #ffffff;
  --color-silver-mist:   #bbc7c6;
  --color-ash:           #f2f2f2;
  --color-slate-deep:    #707777;   /* superficie apenas */
  /* Texto discreto: #707777 falha WCAG AA como texto (2.88:1 sobre o card).
     Este tom da 5.05:1 no pior fundo, mantendo a baixa enfase. */
  --color-muted-text:    #9aa2a1;
  --color-amber-glow:    #f2c879;

  --gradient-aurora: linear-gradient(90deg,
      #cbfffc 0%, #edfffe 26%, #fff9ec 48%, #f2c879 89%);
  --gradient-bioluminescent: linear-gradient(90deg, #00827c 0%, #f2c879 100%);

  --border-hairline: rgba(255, 255, 255, 0.10);
  --border-active:   rgba(242, 200, 121, 0.38);
  --fill-arrow:      rgba(3, 81, 75, 0.5);

  /* Tipografia */
  --font-sans: 'Inter', ui-sans-serif, system-ui, -apple-system,
               BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  --weight-regular: 400;
  --weight-medium:  500;

  --text-caption:    10px;
  --text-label:      12px;
  --text-small:      13px;
  --text-ui:         14px;
  --text-body:       16px;
  --text-subheading: 24px;

  /* Espaçamento */
  --space-12:  12px;
  --space-16:  16px;
  --space-20:  20px;
  --space-24:  24px;
  --space-32:  32px;
  --space-40:  40px;
  --space-48:  48px;
  --space-64:  64px;
  --space-80:  80px;
  --space-120: 120px;

  /* Layout */
  --page-max-width: 1440px;
  --content-width:  1160px;
  --gutter: 24px;
  --nav-height: 80px;

  /* Formas */
  --radius-small: 6px;
  --radius-cards: 16px;

  /* Movimento */
  --ease-out-expo: cubic-bezier(0.16, 1, 0.30, 1);
  --dur-fast: 220ms;
  --dur-mid:  420ms;
  --dur-slow: 850ms;
}

/* ---------------------------------------------------------------- RESET */
*, *::before, *::after { box-sizing: border-box; }

html {
  scroll-behavior: smooth;
  scroll-padding-top: calc(var(--nav-height) + 16px);
  -webkit-text-size-adjust: 100%;
}

body {
  margin: 0;
  background-color: var(--color-liquid-abyss);
  color: var(--color-silver-mist);
  font-family: var(--font-sans);
  font-size: var(--text-body);
  font-weight: var(--weight-regular);
  line-height: 1.4;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
}

body.is-locked { overflow: hidden; }

h1, h2, h3 {
  margin: 0;
  color: var(--color-platinum);
  font-weight: var(--weight-medium);
  line-height: 1;
}

p  { margin: 0; }
ul { margin: 0; padding: 0; list-style: none; }

a {
  color: var(--color-silver-mist);
  text-decoration: none;
  transition: color var(--dur-fast) ease;
}
a:hover { color: var(--color-platinum); }

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

button {
  font: inherit;
  color: inherit;
  background: none;
  border: 0;
  cursor: pointer;
}

:focus-visible {
  outline: 2px solid var(--color-amber-glow);
  outline-offset: 3px;
  border-radius: 2px;
}

.skip-link {
  position: absolute;
  left: -9999px;
  top: 0;
  z-index: 200;
  padding: 12px 20px;
  background: var(--color-liquid-kelp);
  color: var(--color-platinum);
  border-radius: var(--radius-small);
}
.skip-link:focus { left: 16px; top: 16px; }

/* --------------------------------------------------------------- LAYOUT */
.container {
  width: 100%;
  max-width: var(--content-width);
  margin-inline: auto;
  padding-inline: var(--gutter);
}

.section {
  padding-block: clamp(80px, 11vw, var(--space-120));
}
.section--tight { padding-block-start: 0; }

.section__head {
  max-width: 640px;
  margin-bottom: clamp(48px, 6vw, var(--space-80));
}

.section__title {
  margin-block: var(--space-24) var(--space-20);
  font-size: clamp(2.1rem, 5vw, 3.4rem);
  letter-spacing: -0.04em;
}

.section__lead {
  max-width: 52ch;
  color: var(--color-silver-mist);
  font-size: var(--text-body);
  line-height: 1.6;
}

/* ----------------------------------------------------------- TIPOGRAFIA */
.eyebrow {
  color: var(--color-liquid-mist);
  font-size: var(--text-label);
  font-weight: var(--weight-medium);
  text-transform: uppercase;
  letter-spacing: 0.12em;
}

/* --------------------------------------------------------------- BOTÕES */
.btn {
  --btn-py: 12px;
  --btn-px: 22px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: var(--btn-py) var(--btn-px);
  border-radius: var(--radius-small);
  font-size: var(--text-ui);
  font-weight: var(--weight-medium);
  letter-spacing: 0.01em;
  white-space: nowrap;
  cursor: pointer;
  transition: transform var(--dur-fast) var(--ease-out-expo),
              background-position var(--dur-mid) ease,
              border-color var(--dur-fast) ease,
              color var(--dur-fast) ease;
}
.btn--lg { --btn-py: 16px; --btn-px: 30px; font-size: 15px; }

.btn--gradient {
  color: var(--color-liquid-abyss);
  background-image: var(--gradient-aurora);
  background-size: 220% 100%;
  background-position: 0% 50%;
}
.btn--gradient:hover {
  color: var(--color-liquid-abyss);
  background-position: 100% 50%;
  transform: translateY(-2px);
}
.btn--gradient:active { transform: translateY(0); }

.btn--ghost {
  color: var(--color-liquid-mist);
  border: 1px solid var(--border-hairline);
  background: transparent;
}
.btn--ghost:hover {
  color: var(--color-platinum);
  border-color: var(--border-active);
  transform: translateY(-2px);
}

/* Botão de seta ↗ dos cards */
.arrow-btn {
  position: absolute;
  top: var(--space-32);
  right: var(--space-32);
  display: grid;
  place-items: center;
  width: 32px;
  height: 32px;
  border-radius: var(--radius-small);
  background: var(--fill-arrow);
  color: var(--color-platinum);
  transition: background var(--dur-fast) ease;
}
.arrow-btn svg { width: 16px; height: 16px; display: block; }
.arrow-btn svg path { transition: transform var(--dur-mid) var(--ease-out-expo); }

/* ------------------------------------------------------------- WORDMARK */
.wordmark {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  color: var(--color-platinum);
  font-size: var(--text-ui);
  font-weight: var(--weight-medium);
  letter-spacing: -0.01em;
}
.wordmark__mark {
  width: 22px;
  height: 22px;
  flex: none;
}
.wordmark__mark svg { width: 100%; height: 100%; display: block; }

/* Só carrega as <defs> do gradiente da logo — não ocupa espaço */
.svg-defs { position: absolute; width: 0; height: 0; overflow: hidden; }
.wordmark:hover { color: var(--color-platinum); }

/* ------------------------------------------------------------------ NAV */
.nav {
  position: fixed;
  inset-block-start: 0;
  inset-inline: 0;
  z-index: 100;
  height: var(--nav-height);
  background: transparent;
  border-bottom: 1px solid transparent;
  transition: background var(--dur-mid) ease,
              border-color var(--dur-mid) ease,
              backdrop-filter var(--dur-mid) ease;
}
.nav.is-stuck {
  background: rgba(1, 29, 28, 0.72);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border-bottom-color: var(--border-hairline);
}

.nav__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-24);
  height: 100%;
  max-width: var(--page-max-width);
  margin-inline: auto;
  padding-inline: var(--gutter);
}

.nav__list {
  display: flex;
  align-items: center;
  gap: var(--space-24);
}

.nav__link {
  position: relative;
  color: var(--color-silver-mist);
  font-size: var(--text-label);
  font-weight: var(--weight-regular);
  text-transform: uppercase;
  letter-spacing: 0.12em;
}
.nav__link::after {
  content: '';
  position: absolute;
  left: 0;
  bottom: -6px;
  width: 100%;
  height: 1px;
  background-image: var(--gradient-bioluminescent);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform var(--dur-mid) var(--ease-out-expo);
}
.nav__link:hover { color: var(--color-platinum); }
.nav__link:hover::after { transform: scaleX(1); }

.nav__toggle {
  display: none;
  width: 40px;
  height: 40px;
  padding: 0;
  place-items: center;
  gap: 5px;
  border-radius: var(--radius-small);
}
.nav__toggle-bar {
  display: block;
  width: 20px;
  height: 1.5px;
  background: var(--color-platinum);
  transition: transform var(--dur-mid) var(--ease-out-expo),
              opacity var(--dur-fast) ease;
}

/* ----------------------------------------------------------------- HERO */
/* O texto ocupa o terço superior e a esfera de glifos preenche a base, cortada
   pelo fim da viewport — mesmo enquadramento da referência. */
.hero {
  position: relative;
  display: grid;
  align-content: start;
  justify-items: center;
  min-height: 100svh;
  padding-block: calc(var(--nav-height) + 6vh) 96px;
  /* O halo tem 348px a mais que o hero e, cortado no meio do brilho, criava uma
     linha dura contra a seção seguinte. Clip só na horizontal (senão o halo,
     mais largo que a viewport, gera scroll lateral) e livre na vertical, para a
     luz atravessar o limite. O canvas é inset:0 e não transborda. */
  overflow-x: clip;
  overflow-y: visible;
  isolation: isolate;
}

/* Halo de fundo — também serve de fallback caso o WebGL não carregue */
.hero__glow {
  position: absolute;
  z-index: -3;
  top: 62%;
  left: 50%;
  width: min(170vh, 150vw);
  aspect-ratio: 1;
  transform: translate(-50%, -50%);
  background:
    radial-gradient(circle at 50% 50%,
      rgba(0, 150, 142, 0.40) 0%,
      rgba(0, 130, 124, 0.20) 32%,
      rgba(0, 130, 124, 0.07) 52%,
      rgba(1, 38, 36, 0) 72%);
  pointer-events: none;
}

.hero__canvas {
  position: absolute;
  z-index: -2;
  inset: 0;
  width: 100%;
  height: 100%;
  display: block;
  pointer-events: none;
  /* Sem transform aqui: escalar o elemento canvas encolhe sua caixa e, como a
     massa preenche toda a largura, a borda do retângulo fica visível ao rolar.
     O parallax da esfera é feito dentro da cena 3D (ver particle-sphere.js). */
}

/* O texto já não fica sobre a esfera, então o véu só escurece o topo (leitura da
   nav) e suaviza a borda de baixo, onde a esfera é cortada. */
.hero__veil {
  position: absolute;
  z-index: -1;
  inset: 0;
  pointer-events: none;
  background:
    linear-gradient(180deg,
      rgba(1, 38, 36, 0.72) 0%,
      rgba(1, 38, 36, 0.30) 18%,
      rgba(1, 38, 36, 0) 42%);
}

/* Parallax de saída: --hero-progress vai de 0 (topo) a 1 (hero fora da tela),
   atualizado por JS. Texto e esfera se afastam em ritmos diferentes — o texto
   sobe e some, a esfera recua devagar, criando profundidade. */
.hero__content {
  position: relative;
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  transform: translateY(calc(var(--hero-progress, 0) * -72px));
  opacity: clamp(0, calc(1 - var(--hero-progress, 0) * 1.25), 1);
  will-change: transform, opacity;
}

.hero__eyebrow {
  opacity: 0;
  animation: fade-up var(--dur-slow) var(--ease-out-expo) 120ms forwards;
}

.hero__title {
  margin-block: var(--space-24) 0;
  font-size: clamp(2.6rem, 8.2vw, 6rem);
  letter-spacing: -0.046em;
}
.hero__title .line__inner {
  animation: line-up 1s var(--ease-out-expo) forwards;
}
.hero__title .line:nth-child(1) .line__inner { animation-delay: 260ms; }
.hero__title .line:nth-child(2) .line__inner { animation-delay: 400ms; }

.hero__subtitle {
  max-width: 54ch;
  margin-top: var(--space-32);
  color: var(--color-silver-mist);
  font-size: clamp(15px, 1.6vw, 18px);
  line-height: 1.6;
  opacity: 0;
  animation: fade-up var(--dur-slow) var(--ease-out-expo) 620ms forwards;
}

.hero__actions {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: var(--space-16);
  margin-top: var(--space-48);
  opacity: 0;
  animation: fade-up var(--dur-slow) var(--ease-out-expo) 780ms forwards;
}

.hero__scroll {
  position: absolute;
  bottom: 34px;
  left: 50%;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 10px;
  transform: translateX(-50%);
  opacity: 0;
  animation: fade-in var(--dur-slow) ease 1200ms forwards;
}
.hero__scroll-label {
  color: var(--color-muted-text);
  font-size: var(--text-caption);
  text-transform: uppercase;
  letter-spacing: 0.15em;
}
.hero__scroll-line {
  position: relative;
  width: 1px;
  height: 44px;
  overflow: hidden;
  background: rgba(255, 255, 255, 0.12);
}
.hero__scroll-line::after {
  content: '';
  position: absolute;
  inset-inline: 0;
  top: -50%;
  height: 50%;
  background-image: linear-gradient(180deg, transparent, var(--color-amber-glow));
  animation: scroll-trail 2.2s ease-in-out infinite;
}
.hero__scroll:hover .hero__scroll-label { color: var(--color-liquid-mist); }

/* ------------------------------------------------------------- SERVIÇOS */
.services {
  display: grid;
  /* min(320px, 100%) impede a trilha de ficar maior que o container:
     em 320px de viewport o container tem 280px e o card estourava a tela. */
  grid-template-columns: repeat(auto-fit, minmax(min(320px, 100%), 1fr));
  gap: var(--space-24);
}

.card {
  position: relative;
  border-radius: var(--radius-cards);
  padding: clamp(28px, 4vw, var(--space-48));
}

.card--surface {
  background: var(--color-liquid-kelp);
  border: 1px solid transparent;
  transition: transform var(--dur-mid) var(--ease-out-expo),
              border-color var(--dur-mid) ease;
}
.card--surface:hover {
  transform: translateY(-6px);
  border-color: var(--border-active);
}
.card--surface:hover .arrow-btn { background: rgba(242, 200, 121, 0.22); }
.card--surface:hover .arrow-btn svg path { transform: translate(1.5px, -1.5px); }

.card__title {
  /* Folga suficiente para o título passar abaixo do botão de seta, que é
     posicionado de forma absoluta no canto superior direito. */
  margin-block: var(--space-32) var(--space-20);
  font-size: clamp(1.75rem, 3.2vw, 2.25rem);
  letter-spacing: -0.03em;
}

.card__body {
  max-width: 44ch;
  color: var(--color-silver-mist);
  line-height: 1.6;
}

.tag-list {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: var(--space-32);
}
.tag {
  padding: 6px 12px;
  border: 1px solid var(--border-hairline);
  border-radius: var(--radius-small);
  color: var(--color-liquid-mist);
  font-size: var(--text-caption);
  text-transform: uppercase;
  letter-spacing: 0.12em;
}

/* ------------------------------------------------------------ PORTFÓLIO */
.portfolio {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--space-24);
}
.work--wide { grid-column: 1 / -1; }

.work {
  border-radius: var(--radius-cards);
  padding: var(--space-20);
  background: rgba(0, 55, 52, 0.42);
  border: 1px solid transparent;
  transition: transform var(--dur-mid) var(--ease-out-expo),
              border-color var(--dur-mid) ease,
              background var(--dur-mid) ease;
}
.work:hover {
  transform: translateY(-6px);
  background: var(--color-liquid-kelp);
  border-color: var(--border-active);
}

/* Moldura de navegador (placeholder até entrarem as imagens reais) */
.mock {
  border-radius: 10px;
  overflow: hidden;
  background: var(--color-liquid-deep);
  border: 1px solid var(--border-hairline);
}
.mock__bar {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 10px 12px;
  background: rgba(1, 29, 28, 0.9);
  border-bottom: 1px solid var(--border-hairline);
}
.mock__dot {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: rgba(187, 199, 198, 0.28);
  flex: none;
}
.mock__url {
  height: 8px;
  flex: 1;
  margin-left: 8px;
  border-radius: 4px;
  background: rgba(187, 199, 198, 0.12);
}
.mock__screen {
  display: block;
  width: 100%;
  /* Os atributos width/height do <img> evitam salto de layout, mas viram altura
     fixa em px e anulariam o aspect-ratio. height:auto devolve o controle ao CSS. */
  height: auto;
  aspect-ratio: 16 / 10;
  object-fit: cover;
  background-color: var(--color-liquid-abyss);
  background-image:
    radial-gradient(ellipse 60% 50% at 50% 42%, rgba(0, 130, 124, 0.30), transparent 70%),
    linear-gradient(115deg, transparent 46%, rgba(242, 200, 121, 0.10) 50%, transparent 54%);
}
.work--wide .mock__screen { max-height: 520px; object-position: top; }

.work__meta {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  justify-content: space-between;
  gap: 8px;
  padding: var(--space-20) 4px 4px;
}
.work__title {
  font-size: var(--text-subheading);
  letter-spacing: -0.02em;
  line-height: 1.3;
}
.work__tag {
  color: var(--color-muted-text);
  font-size: var(--text-caption);
  text-transform: uppercase;
  letter-spacing: 0.15em;
}

/* O card inteiro é o link para o projeto no ar */
.work__link { display: block; color: inherit; }
.work__link:hover { color: inherit; }

.work__desc {
  max-width: 60ch;
  padding: 0 4px 4px;
  color: var(--color-silver-mist);
  font-size: 15px;
  line-height: 1.6;
}

/* ------------------------------------------------------- MOTION DESIGN */
.motion {
  display: grid;
  grid-template-columns: minmax(220px, 300px) 1fr;
  align-items: center;
  gap: clamp(32px, 5vw, var(--space-64));
  margin-top: var(--space-24);
  padding: clamp(28px, 4vw, var(--space-48));
  border-radius: var(--radius-cards);
  background: var(--color-liquid-kelp);
}

/* Moldura de celular: o vídeo é claro e o site escuro, então emoldurá-lo faz o
   branco ler como "tela ligada" em vez de um retângulo estourado. */
.motion__phone {
  position: relative;
  aspect-ratio: 9 / 16;
  border-radius: 22px;
  padding: 8px;
  background: var(--color-liquid-deep);
  border: 1px solid var(--border-hairline);
}

.motion__video {
  width: 100%;
  height: 100%;
  display: block;
  border-radius: 15px;
  object-fit: cover;
  background: var(--color-liquid-abyss);
}

/* Botão de som sobre a "tela" do celular. Autoplay com áudio é bloqueado por
   todos os navegadores, então o vídeo entra mudo e o som é escolha do visitante. */
.motion__sound {
  position: absolute;
  z-index: 2;
  right: 18px;
  bottom: 18px;
  display: grid;
  place-items: center;
  width: 34px;
  height: 34px;
  padding: 0;
  border-radius: var(--radius-small);
  background: rgba(1, 29, 28, 0.72);
  backdrop-filter: blur(6px);
  -webkit-backdrop-filter: blur(6px);
  color: var(--color-platinum);
  transition: background var(--dur-fast) ease, transform var(--dur-fast) var(--ease-out-expo);
}
.motion__sound svg { width: 19px; height: 19px; display: block; }
.motion__sound:hover {
  background: rgba(0, 55, 52, 0.92);
  transform: translateY(-2px);
}

/* Estado padrão: mudo — mostra o "X", esconde as ondas */
.motion__sound .motion__waves { display: none; }
.motion__sound.is-on .motion__waves { display: block; }
.motion__sound.is-on .motion__cross { display: none; }

/* Sobreposição de reassistir: aparece quando o vídeo termina (só acontece com o
   som ligado, porque mudo ele fica em loop) e para quem pediu menos animação. */
.motion__replay {
  position: absolute;
  inset: 8px;
  z-index: 1;
  display: none;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 12px;
  border-radius: 15px;
  background: rgba(1, 29, 28, 0.84);
  backdrop-filter: blur(4px);
  -webkit-backdrop-filter: blur(4px);
  color: var(--color-platinum);
  font-size: var(--text-label);
  font-weight: var(--weight-medium);
  text-transform: uppercase;
  letter-spacing: 0.12em;
  transition: background var(--dur-fast) ease;
}
.motion__replay svg { width: 30px; height: 30px; display: block; }
.motion__replay:hover { background: rgba(0, 55, 52, 0.88); }
.motion__phone.is-ended .motion__replay { display: flex; }

.motion__title {
  margin-block: var(--space-24) var(--space-20);
  font-size: clamp(1.75rem, 3.2vw, 2.25rem);
  letter-spacing: -0.03em;
}

.motion__body {
  max-width: 46ch;
  color: var(--color-silver-mist);
  line-height: 1.6;
}
.motion .tag-list { margin-top: var(--space-24); }


/* -------------------------------------------------------------- CONTATO */
.well {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  border-radius: var(--radius-cards);
  padding: clamp(56px, 9vw, var(--space-120)) var(--gutter);
  background: var(--color-liquid-deep);
}

.well__title {
  margin-block: var(--space-24) var(--space-24);
  font-size: clamp(2.1rem, 5.4vw, 3.8rem);
  letter-spacing: -0.04em;
}

.well__lead {
  max-width: 46ch;
  color: var(--color-silver-mist);
  font-size: clamp(15px, 1.6vw, 17px);
  line-height: 1.6;
}

.well__actions {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: var(--space-16);
  margin-top: var(--space-48);
}

.channels {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: var(--space-40);
  margin-top: clamp(48px, 7vw, var(--space-80));
  padding-top: clamp(40px, 6vw, var(--space-64));
  border-top: 1px solid var(--border-hairline);
  width: min(100%, 820px);
}
.channel {
  display: flex;
  flex-direction: column;
  gap: 8px;
}
.channel__label {
  color: var(--color-muted-text);
  font-size: var(--text-caption);
  text-transform: uppercase;
  letter-spacing: 0.15em;
}
.channel__value {
  color: var(--color-liquid-mist);
  font-size: var(--text-ui);
}
.channel__value:hover { color: var(--color-amber-glow); }

/* --------------------------------------------------------------- FOOTER */
.footer {
  background: var(--color-liquid-deep);
  border-top: 1px solid var(--border-hairline);
  padding-block: var(--space-64);
}
.footer__inner {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-24);
}
.footer__nav {
  display: flex;
  gap: var(--space-24);
}
.footer__link {
  font-size: var(--text-label);
  text-transform: uppercase;
  letter-spacing: 0.12em;
}
.social {
  display: grid;
  place-items: center;
  width: 38px;
  height: 38px;
  border: 1px solid var(--border-hairline);
  border-radius: var(--radius-small);
  color: var(--color-silver-mist);
  transition: color var(--dur-fast) ease, border-color var(--dur-fast) ease;
}
.social svg { width: 18px; height: 18px; }
.social:hover { color: var(--color-amber-glow); border-color: var(--border-active); }
.footer__copy {
  color: var(--color-muted-text);
  font-size: var(--text-label);
}

/* ------------------------------------------------------- REVEAL / SCROLL */
/* Estados iniciais escondidos só entram com JS presente — sem ele a página
   continua legível em vez de ficar em branco. */
.js .reveal {
  opacity: 0;
  transform: translateY(26px);
  transition: opacity var(--dur-slow) var(--ease-out-expo) var(--reveal-delay, 0ms),
              transform var(--dur-slow) var(--ease-out-expo) var(--reveal-delay, 0ms);
}
.js .reveal.is-visible {
  opacity: 1;
  transform: none;
}

/* --------------------------------------------- LINHAS MASCARADAS (títulos) */
/* Com line-height 1 a tinta da fonte transborda ~0.10em da caixa de linha em cada
   lado, então o overflow:hidden do mask cortaria descendentes ("ç", "g"). O padding
   dá folga ao mask e a margem negativa devolve o espaço, mantendo o ritmo apertado.
   O flex-column no título impede o colapso dessas margens negativas. */
.hero__title,
.split {
  display: flex;
  flex-direction: column;
}

.hero__title .line,
.split .line {
  display: block;
  overflow: hidden;
  padding-block: 0.13em;
  margin-block: -0.13em;
}

.hero__title .line__inner,
.split .line__inner {
  display: block;
  transform: translateY(135%); /* > 100% + padding, senão o texto vaza no mask */
}

/* Hero anima ao carregar (CSS puro); títulos de seção esperam o scroll */
.split .line__inner {
  transform: none;
}
.js .split .line__inner {
  transform: translateY(135%);
  transition: transform 0.95s var(--ease-out-expo) var(--line-delay, 0ms);
}
.js .split.is-visible .line__inner {
  transform: none;
}

/* ----------------------------------------------------------- KEYFRAMES */
@keyframes line-up  { to { transform: translateY(0); } }
@keyframes fade-up  { from { opacity: 0; transform: translateY(20px); }
                        to { opacity: 1; transform: none; } }
@keyframes fade-in  { to { opacity: 1; } }
@keyframes scroll-trail {
  0%   { top: -50%; opacity: 0; }
  35%  { opacity: 1; }
  100% { top: 100%; opacity: 0; }
}

/* ------------------------------------------------------------ RESPONSIVO */
@media (max-width: 900px) {
  .portfolio { grid-template-columns: 1fr; }
  .motion { grid-template-columns: 1fr; }
  .motion__phone { max-width: 300px; margin-inline: auto; }
  .work--wide { grid-column: auto; }
  .work--wide .mock__screen { aspect-ratio: 16 / 10; }
}

@media (max-width: 768px) {
  :root { --gutter: 20px; }

  .nav__toggle { display: grid; }
  .nav__cta { display: none; }

  .nav__menu {
    position: fixed;
    inset: 0;
    z-index: -1;
    display: grid;
    place-items: center;
    background: var(--color-liquid-deep);
    opacity: 0;
    visibility: hidden;
    transform: translateY(-12px);
    /* visibility com atraso igual à duração: some só depois do fade terminar.
       Ao abrir (regra .is-open) o atraso é zero, então o menu fica focável
       imediatamente — elemento com visibility:hidden não recebe foco. */
    transition: opacity var(--dur-mid) ease,
                transform var(--dur-mid) var(--ease-out-expo),
                visibility 0s linear var(--dur-mid);
  }
  .nav.is-open .nav__menu {
    opacity: 1;
    visibility: visible;
    transform: none;
    transition: opacity var(--dur-mid) ease,
                transform var(--dur-mid) var(--ease-out-expo),
                visibility 0s linear 0s;
  }

  /* Ao cruzar o breakpoint arrastando a janela, o menu herda o estado visível do
     desktop e "fecharia" com fade — um painel escuro piscando na tela. Durante o
     resize a transição fica desligada. */
  .nav.is-resizing .nav__menu { transition: none; }
  .nav.is-open { background: var(--color-liquid-deep); }

  .nav__list {
    flex-direction: column;
    gap: var(--space-32);
  }
  .nav__link { font-size: 20px; letter-spacing: 0.08em; }

  .nav.is-open .nav__toggle-bar:nth-child(1) { transform: translateY(3.25px) rotate(45deg); }
  .nav.is-open .nav__toggle-bar:nth-child(2) { transform: translateY(-3.25px) rotate(-45deg); }

  .arrow-btn { top: var(--space-24); right: var(--space-24); }
  .channels { gap: var(--space-32); }
  .footer__inner { justify-content: flex-start; }
}

@media (max-width: 480px) {
  .hero__actions .btn,
  .well__actions .btn { width: 100%; }
  .channels { flex-direction: column; align-items: center; text-align: center; }
}

/* ------------------------------------------------------- REDUCED MOTION */
@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;
  }

  .hero__title .line__inner,
  .js .split .line__inner { transform: none; }
  .hero__eyebrow,
  .hero__subtitle,
  .hero__actions,
  .hero__scroll { opacity: 1; }
  .js .reveal { opacity: 1; transform: none; }

  /* Sem parallax: o hero fica parado e opaco */
  .hero__content { transform: none; opacity: 1; }
}