/* MTEC · estilos comuns às três páginas: cores, tipografia, cabeçalho, menu mobile e rodapé */

  /* Página /projetos: header e footer iguais à home; hero curto, filtros, grade 3x2 de cards, CTA compacto */
  :root {
    --bg: #000;
    --bg-elevated: #141417;
    --fg: #f5f5f6;
    --fg-muted: #8c8c92;
    --border: rgba(245, 245, 246, 0.09);
    --border-strong: rgba(245, 245, 246, 0.18);
    color-scheme: dark;
    --font-display: 'Space Grotesk', system-ui, sans-serif;
  }

  * { box-sizing: border-box; }

  body {
    margin: 0;
    background: var(--bg);
    color: var(--fg);
    font-family: var(--font-display);
    padding-left: max(16px, env(safe-area-inset-left, 0px));
    padding-right: max(16px, env(safe-area-inset-right, 0px));
  }

  body::before {
    content: "";
    position: fixed;
    inset: 0 0 auto;
    height: env(safe-area-inset-top, 0px);
    z-index: 21;
    background: var(--bg);
  }

  /* ---------- Header ---------- */
  header {
    position: sticky;
    top: env(safe-area-inset-top, 0px);
    z-index: 20;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 24px;
    max-width: 1280px;
    margin: 0 auto;
    padding-block: 20px;
  }

  header.is-stuck {
    background: color-mix(in srgb, var(--bg) 78%, transparent);
    backdrop-filter: blur(14px) saturate(140%);
    -webkit-backdrop-filter: blur(14px) saturate(140%);
    border-bottom: 1px solid var(--border);
  }

  .logo {
    display: flex;
    align-items: center;
    gap: 10px;
    text-decoration: none;
    color: var(--fg);
    flex-shrink: 0;
  }

  .logo svg { width: 26px; height: 26px; display: block; }

  .logo-text { font-size: 1.05rem; font-weight: 700; letter-spacing: 0.06em; }

  .cta:hover { opacity: 0.88; }

  .cta:active { transform: scale(0.97); }

  .cta:focus-visible { outline: 2px solid var(--border-strong); outline-offset: 3px; }

  .menu-toggle {
    display: none;
    width: 38px;
    height: 38px;
    align-items: center;
    justify-content: center;
    background: transparent;
    border: 1px solid var(--border);
    border-radius: 8px;
    color: var(--fg);
    cursor: pointer;
    flex-shrink: 0;
  }

  .menu-toggle svg { width: 18px; height: 18px; }

  .mobile-panel {
    position: fixed;
    top: 0;
    right: 0;
    bottom: 0;
    width: min(78vw, 320px);
    background: var(--bg-elevated);
    border-left: 1px solid var(--border);
    padding: 24px max(20px, env(safe-area-inset-right, 0px)) 24px 20px;
    padding-top: calc(env(safe-area-inset-top, 0px) + 24px);
    display: flex;
    flex-direction: column;
    gap: 4px;
    transform: translateX(100%);
    transition: transform 0.28s ease;
    z-index: 30;
  }

  .mobile-panel.is-open { transform: translateX(0); }

  .mobile-panel a {
    color: var(--fg);
    text-decoration: none;
    font-size: 1.05rem;
    font-weight: 500;
    padding: 14px 4px;
    border-bottom: 1px solid var(--border);
  }

  .scrim {
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.5);
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.28s ease;
    z-index: 25;
  }

  .scrim.is-open { opacity: 1; pointer-events: auto; }

  /* ---------- Hero ---------- */
  main { max-width: 1280px; margin: 0 auto; }

  /* ---------- Footer ---------- */
  footer { border-top: 1px solid var(--border); }

  .footer-inner { max-width: 1280px; margin: 0 auto; }

  .footer-grid {
    display: grid;
    grid-template-columns: 1.4fr 1fr 1fr 1fr;
    gap: 40px;
    padding-block: 56px;
  }

  .social-row { display: flex; gap: 10px; }

  .social-link {
    width: 36px;
    height: 36px;
    display: flex;
    align-items: center;
    justify-content: center;
    border: 1px solid var(--border);
    border-radius: 9px;
    color: var(--fg-muted);
    transition: border-color 0.2s ease, color 0.2s ease;
  }

  .social-link svg { width: 16px; height: 16px; }

  .social-link:hover { border-color: var(--border-strong); color: var(--fg); }

  .footer-heading {
    margin: 0 0 16px;
    font-size: 0.78rem;
    font-weight: 600;
    letter-spacing: 0.12em;
    text-transform: uppercase;
    color: var(--fg-muted);
  }

  .footer-list { list-style: none; margin: 0; padding: 0; display: flex; flex-direction: column; gap: 10px; }

  .footer-list a, .footer-list p { margin: 0; font-size: 0.88rem; color: var(--fg-muted); text-decoration: none; transition: color 0.2s ease; }

  .footer-list a:hover { color: var(--fg); }