/* Existing brand, more editorial movement: variance 5 / motion 5 / density 5.
   Short, finite sequences. No background loops or scroll hijacking. */
:root { --motion-ease: cubic-bezier(.22, 1, .36, 1); --motion-distance: 18px; }

/* Masks follow words, not fixed lines, so headings keep their mobile wrapping. */
.scroll-heading .word-mask {
  display: inline-block; overflow: clip; vertical-align: top;
  padding-top: .06em; margin-top: -.06em;
  padding-bottom: .13em; margin-bottom: -.13em;
}
.scroll-heading .word-enter { display: inline-block; }

.draw .track-tread {
  fill: none; stroke: var(--azul); stroke-width: 5;
  stroke-dasharray: 2 10; opacity: .3;
}
.draw .machine-glass { fill: #E4E8ED; }
.draw .glass-reflection { fill: var(--papel-card); opacity: .85; }
.draw .bucket-reinforcement {
  fill: none; stroke: var(--azul); stroke-width: 1.5;
  stroke-linecap: round; opacity: .4;
}
.draw .bucket-tooth { stroke-width: 2; }
.draw .bucket-lip { stroke-width: 1.8; }

.machine-controls {
  display: flex; align-items: center; justify-content: space-between; gap: 18px;
  font: 11px/1.6 var(--mono); color: var(--texto);
}
.machine-controls[hidden] { display: none; }
.machine-replay {
  flex-shrink: 0; min-height: 44px; min-width: 18ch; padding: 8px 0;
  color: var(--azul); background: transparent; border: 0;
  border-bottom: 1px solid var(--azul); font: inherit; cursor: pointer;
}
.machine-replay:hover { border-bottom-color: var(--amarelo); }
.machine-replay:disabled { color: var(--texto-fraco); cursor: default; }
.zona-button {
  padding: 0; min-height: 32px; border: 0; background: transparent;
  color: inherit; font: inherit; text-align: left;
}
.anatomia.is-interactive .zona-button { cursor: pointer; }
.anatomia.is-interactive .zonas li { position: relative; }
.anatomia.is-interactive .zonas li::before {
  content: ''; position: absolute; inset: 0 -12px; z-index: -1;
  background: rgb(252 192 0 / .09); opacity: 0;
}
.zonas li.is-active::before { opacity: 1 !important; }
.zonas li.is-active .zona-n { background: var(--azul); color: var(--amarelo); }
.zonas li.is-active h3 { text-decoration: underline; text-decoration-color: var(--amarelo); text-underline-offset: 6px; }
.draw .hot[role="button"] { cursor: pointer; outline: none; }
.draw .hot .hot-target { fill: transparent; stroke: none; }
.draw .hot.is-active circle:not(.hot-target),
.draw .hot:focus-visible circle:not(.hot-target) { fill: var(--amarelo); stroke: var(--azul); }
.draw .hot.is-active text, .draw .hot:focus-visible text { fill: var(--azul); }
.draw .hot:focus-visible .hot-target { stroke: var(--azul); stroke-width: 2; stroke-dasharray: 3 3; }
.draw [data-part].is-active > .fill-p,
.draw [data-part="hidraulica"].is-active #machine-boom > .fill-p,
.draw [data-part="hidraulica"].is-active #machine-arm > .fill-p { fill: #F8E8AA; }
.draw [data-part="motor"].is-active > .fill-y { fill: #FFD54D; }
.draw [data-part].is-active > .ln { stroke-width: 3; }
.burger path { transform-origin: 12px 12px; }
.burger[aria-expanded="true"] path:nth-child(1) { transform: translateY(5px) rotate(45deg); transform-origin: 12px 7px; }
.burger[aria-expanded="true"] path:nth-child(2) { opacity: 0; }
.burger[aria-expanded="true"] path:nth-child(3) { transform: translateY(-5px) rotate(-45deg); transform-origin: 12px 17px; }

@media (prefers-reduced-motion: no-preference) {
  .motion-ready .hero-copy > *, .motion-ready .hero .panel {
    animation: enter-content .8s var(--motion-ease) both;
  }
  .motion-ready .hero-copy > :nth-child(2) { animation-delay: .06s; }
  .motion-ready .hero-copy > :nth-child(3) { animation-delay: .12s; }
  .motion-ready .hero-copy > :nth-child(4) { animation-delay: .18s; }
  .motion-ready .hero-copy > :nth-child(5) { animation-delay: .24s; }
  .motion-ready .hero .panel { animation-delay: .16s; }
  .motion-ready .motion-item {
    opacity: 0; transform: translateY(var(--motion-distance));
    transition: opacity .55s var(--motion-ease), transform .72s var(--motion-ease);
    transition-delay: var(--reveal-delay, 0ms);
  }
  .motion-ready .motion-item.is-in { opacity: 1; transform: none; }
  .motion-ready .motion-item:focus-within { opacity: 1; transform: none; transition: none; }
  .motion-ready .scroll-heading { opacity: 1; transform: none; }
  .motion-ready .scroll-heading .word-enter {
    opacity: 0; transform: translateY(110%);
    transition: transform .72s var(--motion-ease), opacity .45s var(--motion-ease);
    transition-delay: calc(var(--reveal-delay, 0ms) + var(--word-delay, 0ms));
  }
  .motion-ready .scroll-heading.is-in .word-enter { opacity: 1; transform: none; }
  .motion-ready .brand-row { transform: translateY(12px); }
  .motion-ready .brand-row.is-in { transform: none; }
  .motion-ready :is(.peca, .card, .qa, .steps li) > p {
    opacity: 0; transform: translateY(5px);
    transition: opacity .5s var(--motion-ease), transform .6s var(--motion-ease);
    transition-delay: calc(var(--reveal-delay, 0ms) + 70ms);
  }
  .motion-ready :is(.peca, .card, .qa, .steps li).is-in > p { opacity: 1; transform: none; }
  .motion-ready .motion-item.is-settled,
  .motion-ready .motion-item.is-settled :is(.word-enter, p, img, figcaption) {
    opacity: 1; transform: none; transition: none; animation: none;
  }
  .motion-ready .citacao { --reveal-delay: 180ms !important; }
  .machine-controls button, .zona-n, .zonas li::before { transition: color .2s var(--motion-ease), background-color .2s var(--motion-ease), opacity .25s var(--motion-ease); }
  .draw .hot circle, .draw .hot text, .draw .fill-p { transition: fill .25s var(--motion-ease), stroke .25s var(--motion-ease); }
  .btn svg, .brand-cta svg { transition: transform .3s var(--motion-ease); }
  .btn:is(:hover, :focus-visible) svg, .brand-cta a:is(:hover, :focus-visible) svg { transform: translateX(4px); }
  .btn-tel { transition: color .2s var(--motion-ease), background-color .2s var(--motion-ease); }
  .machine-replay { transition: border-color .2s var(--motion-ease), color .2s var(--motion-ease); }
  .btn { transition: background-color .2s ease, transform .3s var(--motion-ease); }
  .btn[download] > span { display: inline-block; transition: transform .3s var(--motion-ease); }
  .btn[download]:is(:hover, :focus-visible) > span { transform: translateY(3px); }
  .catalogue-cover { transition: border-color .2s ease, transform .4s var(--motion-ease); }
  .field label { transition: color .2s ease; }
  .field:focus-within label { color: var(--amarelo); }
  .field :is(input, textarea) { transition: border-color .25s ease; }
  .burger path { transition: transform .25s var(--motion-ease), opacity .15s ease; }
  .nav a { position: relative; }
  .nav a::after {
    content: ''; position: absolute; bottom: 0; left: 0; right: 0; height: 2px;
    background: var(--amarelo); transform: scaleX(0); transform-origin: left;
    transition: transform .28s var(--motion-ease);
  }
  @media (min-width: 861px) {
    .nav a:hover { border-bottom: 0; padding-bottom: 4px; }
  }
  .nav a:is(:hover, :focus-visible)::after { transform: scaleX(1); }
  .peca-svg, .card .ico { transition: transform .5s var(--motion-ease); }
  .icon-piston { transform: translateX(var(--piston-travel, 0px)); transition: transform .6s var(--motion-ease); }
  .icon-rotor { transform-origin: 50px 60px; transform: rotate(var(--rotor-angle, 0deg)); transition: transform .8s var(--motion-ease); }
  .icon-chisel { transform: translateY(var(--chisel-travel, 0px)); transition: transform .35s var(--motion-ease); }
  .peca.is-in .peca-svg { animation: settle-vector .75s var(--motion-ease) backwards; animation-delay: var(--reveal-delay, 0ms); }
  .steps li { position: relative; }
  .steps li::before {
    content: ''; position: absolute; top: -1px; left: 0; width: 40px; height: 2px;
    background: var(--amarelo); transform: scaleX(0); transform-origin: left;
    transition: transform .7s var(--motion-ease) var(--reveal-delay, 0ms);
  }
  .steps li.is-in::before { transform: scaleX(1); }
  @media (hover: hover) and (pointer: fine) {
    .btn:hover { transform: translateY(-2px); }
    .btn:active { transform: translateY(0); }
    .catalogue-cover:hover, .motion-ready .catalogue-cover.is-in:hover { transform: translateY(-3px); }
    .peca:hover { --piston-travel: 6px; --rotor-angle: 90deg; --chisel-travel: 5px; }
    .peca:hover .peca-svg { transform: translateY(-4px); }
    .card:hover .ico { transform: translateY(-3px) rotate(-5deg); }
  }
}
/* Faixas: deslizam uma vez e assentam. O percurso e um numero inteiro de
   repeticoes do padrao (28px na diagonal = 28 * raiz de 2 na horizontal),
   por isso o ponto de partida e igual ao de chegada e nao ha salto. */
@media (prefers-reduced-motion: no-preference) {
  .motion-ready .stripe.is-in { animation: stripe-desliza 1.8s var(--motion-ease) both; }
}
@keyframes stripe-desliza {
  from { background-position: calc(-28px * 1.41421356 * 5) 0; }
  to   { background-position: 0 0; }
}
@keyframes enter-content { from { opacity: 0; transform: translateY(16px); } to { opacity: 1; transform: none; } }
@keyframes settle-vector { from { opacity: .4; transform: translateY(5px) rotate(-4deg); } to { opacity: 1; transform: none; } }
@media (max-width: 860px) {
  :root { --motion-distance: 12px; }
  .draw .hot .hot-target { r: 50px; }
  .machine-controls { padding: 0 var(--gutter); flex-wrap: wrap; gap: 2px 16px; }
  .zona-button { min-height: 44px; }
}
/* Menu do telemovel: abre e fecha (antes so abria; fechar era de golpe).
   allow-discrete mantem-no visivel durante a saida. */
@media (max-width: 860px) and (prefers-reduced-motion: no-preference) {
  .nav {
    opacity: 0; transform: translateY(-6px);
    transition: opacity .24s var(--motion-ease), transform .24s var(--motion-ease),
                display .24s allow-discrete;
  }
  .nav.is-open { opacity: 1; transform: none; }
  @starting-style { .nav.is-open { opacity: 0; transform: translateY(-6px); } }
}
@media (prefers-reduced-motion: reduce) {
  .machine-replay { display: none; }
  .motion-item, .reveal, .word-enter { opacity: 1 !important; transform: none !important; }
}
@media print {
  .motion-ready .motion-item, .motion-ready .word-enter,
  .motion-ready :is(.peca, .card, .qa, .steps li) > p,
  .motion-ready .hero-copy > *, .motion-ready .hero .panel {
    opacity: 1 !important; transform: none !important;
    animation: none !important; transition: none !important;
  }
}