/* ═══════════════════════════════════════════════════════════
   BLUZ LABS — Sistema Visual (isolado do site raiz)
   Tokens copiados de /styles.css propositalmente: o Labs evolui
   de forma independente e NÃO importa nada da raiz nem das demos.
   ═══════════════════════════════════════════════════════════ */


/* ══════════════════════════════════════════════════════════
   VIEW TRANSITIONS — convenção compartilhada entre /labs e
   as demos. A regra @view-transition precisa existir em TODOS
   os documentos envolvidos na navegação. Etapa 2 (futura)
   adicionará view-transition-name em elementos específicos;
   nomes não podem ser renomeados isoladamente.
   ══════════════════════════════════════════════════════════ */
@view-transition {
  navigation: auto;
}

/* O UA aplica um par assimétrico (fade-out 90ms + fade-in 210ms
   com delay). Aqui vira um cruzamento simultâneo, na duração e
   no easing da casa — continuidade, não espetáculo. */
::view-transition-old(root),
::view-transition-new(root) {
  animation-duration: var(--dur-base);
  animation-timing-function: var(--ease-out);
  animation-delay: 0s;
}

/* Neutraliza o movimento sem desligar o mecanismo: a regra
   @view-transition acima permanece; só o crossfade some.
   Os pseudo-elementos de view transition vivem em árvore
   própria — o seletor universal não os alcança. */
@media (prefers-reduced-motion: reduce) {
  ::view-transition-old(root),
  ::view-transition-new(root) {
    animation-duration: 1ms;
    animation-delay: 0s;
  }
}


/* ── Tokens: Modo Claro ─────────────────────────────────── */
:root {
  --c-bg:          #F5F1E8;
  --c-bg-card:     #FAFAF7;
  --c-bg-elevated: #FFFFFF;
  --c-text:        #1C1817;
  --c-text-2:      #7A736A;

  --c-green:       #1F3A2E;
  --c-green-mid:   #2C4E3D;
  --c-wine:        #6E2235;
  --c-wine-mid:    #8B2E47;
  --c-gold:        #E8B547;
  --c-nearblack:   #1C1817;
  --c-cream:       #F5F1E8;
  --c-lily:        #FFFEF9;

  --c-accent:      var(--c-wine);
  --c-accent-h:    var(--c-wine-mid);
  --c-border:      rgba(28, 24, 23, 0.10);
  --c-border-s:    rgba(28, 24, 23, 0.20);

  --f-display: 'Fraunces', Georgia, serif;
  --f-body:    'Inter', system-ui, sans-serif;
  --f-mono:    'JetBrains Mono', 'Courier New', monospace;

  --text-hero:     clamp(2.75rem, 7vw, 5.5rem);
  --text-h2:       clamp(1.5rem, 3vw, 2.25rem);
  --text-body-lg:  1.125rem;
  --text-body:     1rem;
  --text-sm:       0.875rem;
  --text-label:    0.75rem;

  --space-xs:      0.5rem;
  --space-sm:      1rem;
  --space-md:      2rem;
  --space-lg:      4rem;
  --space-section: clamp(4rem, 9vw, 8rem);

  --ease-out:  cubic-bezier(0.16, 1, 0.3, 1);
  --dur-fast:  150ms;
  --dur-base:  300ms;
  --dur-slow:  600ms;

  --radius-sm: 2px;
  --radius-md: 6px;
  --radius-lg: 12px;

  color-scheme: light;
}

/* ── Tokens: Modo Escuro (base do Labs = verde escuro) ──── */
[data-theme="dark"] {
  --c-bg:          #1F3A2E;
  --c-bg-card:     #2C4E3D;
  --c-bg-elevated: rgba(60, 100, 80, 0.5);
  --c-text:        #F5F1E8;
  --c-text-2:      rgba(245, 241, 232, 0.55);
  --c-accent:      var(--c-wine-mid);
  --c-accent-h:    var(--c-wine);
  --c-border:      rgba(245, 241, 232, 0.12);
  --c-border-s:    rgba(245, 241, 232, 0.22);

  color-scheme: dark;
}

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

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

body {
  font-family: var(--f-body);
  font-size: var(--text-body);
  line-height: 1.6;
  color: var(--c-text);
  background-color: var(--c-bg);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  transition:
    background-color var(--dur-base) var(--ease-out),
    color var(--dur-base) var(--ease-out);
}

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

:focus-visible {
  outline: 2px solid var(--c-gold);
  outline-offset: 3px;
  border-radius: var(--radius-sm);
}

/* ── Layout ─────────────────────────────────────────────── */
.labs-container {
  width: 100%;
  max-width: 1180px;
  margin-inline: auto;
  padding-inline: clamp(1.5rem, 5vw, 5rem);
}

.labs-eyebrow {
  font-family: var(--f-mono);
  font-size: var(--text-label);
  font-weight: 500;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  color: var(--c-gold);
}


/* ══════════════════════════════════════════════════════════
   HEADER
   ══════════════════════════════════════════════════════════ */
.labs-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: color-mix(in srgb, var(--c-bg) 82%, transparent);
  -webkit-backdrop-filter: blur(10px);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid transparent;
  transition: border-color var(--dur-base) var(--ease-out);
}
.labs-header.is-scrolled {
  border-bottom-color: var(--c-border);
}
.labs-header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-sm);
  padding-block: 1rem;
}
.labs-header__logo {
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
}
.labs-header__logo-img {
  width: 30px;
  height: 30px;
  object-fit: contain;
}
.labs-header__wordmark {
  font-family: var(--f-display);
  font-weight: 600;
  font-size: 1.15rem;
  letter-spacing: -0.01em;
  color: var(--c-text);
}
.labs-header__actions {
  display: inline-flex;
  align-items: center;
  gap: 1.25rem;
}
.labs-header__back {
  font-family: var(--f-mono);
  font-size: var(--text-sm);
  color: var(--c-text-2);
  transition: color var(--dur-fast) var(--ease-out);
}
.labs-header__back:hover { color: var(--c-text); }
.labs-header__theme-btn {
  width: 38px;
  height: 38px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: 999px;
  border: 1px solid var(--c-border-s);
  font-size: 1rem;
  color: var(--c-text);
  transition: background var(--dur-fast) var(--ease-out);
}
.labs-header__theme-btn:hover { background: var(--c-bg-elevated); }


/* ══════════════════════════════════════════════════════════
   HERO
   ══════════════════════════════════════════════════════════ */
.labs-hero {
  padding-block: clamp(4rem, 12vw, 9rem) clamp(2.5rem, 6vw, 5rem);
}
.labs-hero .labs-eyebrow { margin-bottom: 1.25rem; }
.labs-hero__title {
  font-family: var(--f-display);
  font-weight: 600;
  font-size: var(--text-hero);
  line-height: 1.02;
  letter-spacing: -0.025em;
  color: var(--c-text);
  max-width: 15ch;
}
.labs-hero__title em {
  font-style: italic;
  font-weight: 400;
  color: var(--c-gold);
}
.labs-hero__lead {
  margin-top: 1.5rem;
  font-size: var(--text-body-lg);
  line-height: 1.6;
  color: var(--c-text-2);
  max-width: 46ch;
}


/* ══════════════════════════════════════════════════════════
   GRID DE DEMOS
   ══════════════════════════════════════════════════════════ */
.labs-grid-section {
  padding-bottom: var(--space-section);
}
.labs-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: clamp(1.25rem, 3vw, 2rem);
}

.labs-card {
  display: flex;
  flex-direction: column;
  background: var(--c-bg-card);
  border: 1px solid var(--c-border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  transition:
    transform var(--dur-base) var(--ease-out),
    border-color var(--dur-base) var(--ease-out);
}
.labs-card:hover {
  transform: translateY(-4px);
  border-color: var(--c-border-s);
}

/* Preview — o screenshot da demo (assets/preview-*.webp) entra como <img>
   posicionada no HTML e cobre este box. A cor sólida do data-tone virou
   fundo/fallback: só aparece se a imagem faltar, no mesmo box, sem mudar
   a altura do card. */
.labs-card__preview {
  aspect-ratio: 16 / 9;
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
}
.labs-card__preview::after {
  /* hachura sutil sobre o fundo de tom — fica atrás da <img> (z-index 1),
     então só é vista quando o preview cai no fallback de cor */
  content: '';
  position: absolute;
  inset: 0;
  background-image: repeating-linear-gradient(
    45deg,
    rgba(255, 255, 255, 0.04) 0,
    rgba(255, 255, 255, 0.04) 1px,
    transparent 1px,
    transparent 11px
  );
  pointer-events: none;
}
.labs-card__glyph {
  font-family: var(--f-display);
  font-style: italic;
  font-size: clamp(2.5rem, 6vw, 3.75rem);
  font-weight: 400;
  line-height: 1;
  opacity: 0.9;
}

/* Tons de preview — cores sólidas da paleta Bluz */
.labs-card__preview[data-tone="green"]  { background: var(--c-green);      color: var(--c-cream); }
.labs-card__preview[data-tone="wine"]   { background: var(--c-wine);      color: var(--c-cream); }
.labs-card__preview[data-tone="ink"]    { background: var(--c-nearblack); color: var(--c-cream); }
.labs-card__preview[data-tone="gold"]   { background: var(--c-gold);      color: var(--c-nearblack); }
.labs-card__preview[data-tone="forest"] { background: var(--c-green-mid);  color: var(--c-cream); }
.labs-card__preview[data-tone="cream"]  { background: var(--c-cream);      color: var(--c-green); }

.labs-card__body {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  padding: clamp(1.25rem, 3vw, 1.75rem);
  flex: 1;
}
.labs-card__tag {
  font-family: var(--f-mono);
  font-size: var(--text-label);
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--c-text-2);
}
.labs-card__title {
  font-family: var(--f-display);
  font-weight: 600;
  font-size: var(--text-h2);
  line-height: 1.15;
  letter-spacing: -0.01em;
  color: var(--c-text);
}
.labs-card__pain {
  font-size: var(--text-sm);
  line-height: 1.6;
  color: var(--c-text-2);
  margin-top: 0.25rem;
}
.labs-card__footer {
  margin-top: auto;
  padding-top: 1.25rem;
}

/* CTA do card — estado "em breve" (desabilitado visualmente) */
.labs-card__cta {
  display: inline-flex;
  align-items: center;
  gap: 0.55rem;
  font-family: var(--f-mono);
  font-size: var(--text-sm);
  letter-spacing: 0.04em;
  padding: 0.6rem 1.1rem;
  border-radius: 999px;
  border: 1px solid var(--c-border-s);
  color: var(--c-text);
  background: transparent;
  transition:
    background var(--dur-fast) var(--ease-out),
    color var(--dur-fast) var(--ease-out);
}
.labs-card__cta--soon {
  color: var(--c-text-2);
  cursor: not-allowed;
}
.labs-card__status-dot {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--c-gold);
  box-shadow: 0 0 0 3px color-mix(in srgb, var(--c-gold) 25%, transparent);
}


/* ══════════════════════════════════════════════════════════
   CTA FINAL
   ══════════════════════════════════════════════════════════ */
.labs-cta {
  padding-block: var(--space-section);
  border-top: 1px solid var(--c-border);
}
.labs-cta__inner {
  text-align: center;
  display: flex;
  flex-direction: column;
  align-items: center;
}
.labs-cta__rule {
  width: 2.5rem;
  height: 2px;
  background: var(--c-gold);
  margin-bottom: var(--space-md);
}
.labs-cta__title {
  font-family: var(--f-display);
  font-weight: 600;
  font-size: clamp(1.75rem, 4vw, 3rem);
  line-height: 1.1;
  letter-spacing: -0.015em;
  color: var(--c-text);
  max-width: 18ch;
}
.labs-cta__text {
  margin-top: 1.25rem;
  font-size: var(--text-body-lg);
  line-height: 1.65;
  color: var(--c-text-2);
  max-width: 48ch;
}
.labs-cta__btn {
  margin-top: 2rem;
  display: inline-flex;
  align-items: center;
  font-family: var(--f-body);
  font-weight: 500;
  font-size: var(--text-body);
  color: var(--c-cream);
  background: var(--c-accent);
  padding: 0.9rem 1.8rem;
  border-radius: 999px;
  transition:
    background var(--dur-fast) var(--ease-out),
    transform var(--dur-fast) var(--ease-out);
}
.labs-cta__btn:hover {
  background: var(--c-accent-h);
  transform: translateY(-2px);
}


/* ══════════════════════════════════════════════════════════
   FOOTER
   ══════════════════════════════════════════════════════════ */
.labs-footer {
  border-top: 1px solid var(--c-border);
  padding-block: var(--space-lg);
}
.labs-footer__inner {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-sm);
}
.labs-footer__logo {
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
}
.labs-footer__logo-img {
  width: 26px;
  height: 26px;
  object-fit: contain;
}
.labs-footer__wordmark {
  font-family: var(--f-display);
  font-weight: 600;
  font-size: 1.05rem;
  color: var(--c-text);
}
.labs-footer__meta {
  font-family: var(--f-mono);
  font-size: var(--text-label);
  letter-spacing: 0.04em;
  color: var(--c-text-2);
}


/* ══════════════════════════════════════════════════════════
   MOTION — reveals discretos (scroll-driven), com fallback
   ══════════════════════════════════════════════════════════ */

/* Fallback (sem suporte a animation-timeline): conteúdo estático,
   totalmente visível — a página nunca depende de JS/animação. */
.reveal { opacity: 1; }

@supports (animation-timeline: view()) {
  @media (prefers-reduced-motion: no-preference) {
    .reveal {
      opacity: 0;
      transform: translateY(18px);
      animation: labs-reveal linear both;
      animation-timeline: view();
      animation-range: entry 5% cover 22%;
    }
  }
}

@keyframes labs-reveal {
  to {
    opacity: 1;
    transform: none;
  }
}

/* Respeita quem pediu menos movimento */
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .reveal { opacity: 1; transform: none; animation: none; }
  .labs-card:hover { transform: none; }
  .labs-cta__btn:hover { transform: none; }
}


/* ══════════════════════════════════════════════════════════
   RESPONSIVO
   ══════════════════════════════════════════════════════════ */
@media (max-width: 720px) {
  .labs-grid {
    grid-template-columns: 1fr;
  }
  .labs-header__wordmark {
    display: none;
  }
  .labs-header__back {
    font-size: var(--text-label);
  }
}