/* Layout: container, fixed header, navigation, brand, footer.
   z-index scale: overlay 40 < header 50 (the toggle shares the header layer and sits above the overlay). */

/* Container */
.wrap {
  inline-size: var(--container);
  margin-inline: auto;
}

/* Fixed header: transparent at top, blurred hairline bar once scrolled */
.site-header {
  position: fixed;
  inset-block-start: 0;
  inset-inline: 0;
  z-index: 50;
  block-size: calc(var(--header-h) + env(safe-area-inset-top));
  padding-block-start: env(safe-area-inset-top);
  border-block-end: 1px solid transparent;
  transition: border-color var(--dur) var(--ease-out);
}

/* Blur lives on a pseudo-element so the header never becomes the containing block of the mobile overlay */
.site-header::before {
  content: "";
  position: absolute;
  inset: 0;
  z-index: -1;
  background: color-mix(in srgb, var(--bg) 82%, transparent);
  -webkit-backdrop-filter: blur(14px) saturate(1.2);
  backdrop-filter: blur(14px) saturate(1.2);
  opacity: 0;
  transition: opacity var(--dur) var(--ease-out);
}

.site-header.is-scrolled {
  border-block-end-color: var(--line);
}

.site-header.is-scrolled::before {
  opacity: 1;
}

/* Route bar: an ember line sweeps under the header on every page change (router.js adds .is-routing). */
.site-header::after {
  content: "";
  position: absolute;
  inset-inline: 0;
  inset-block-end: -1px;
  block-size: 2px;
  background: linear-gradient(90deg, transparent, var(--ember) 30%, var(--ember-2));
  box-shadow: 0 0 12px var(--ember-glow);
  transform: scaleX(0);
  transform-origin: left;
  opacity: 0;
  pointer-events: none;
}

html.is-routing .site-header::after {
  animation: route-sweep calc(var(--dur-slow) * 0.8) var(--ease-out) both;
}

/* Header: the landing keeps the official mark as its only navigation element. */
.nav-wrap {
  display: flex;
  block-size: 100%;
  align-items: center;
  justify-content: flex-start;
}

/* Brand */
.brand {
  position: relative;
  z-index: 1;
  display: inline-flex;
  align-items: center;
  gap: var(--space-3);
  inline-size: 158px;
  color: var(--text);
  text-decoration: none;
}

.brand-logo {
  display: block;
  inline-size: 100%;
  block-size: auto;
  max-inline-size: 100%;
}

/* Brand flame: inline SVG, ember with a soft glow */
.brand-mark {
  flex: none;
  inline-size: 1.75rem;
  block-size: 1.75rem;
  overflow: visible;
  filter: drop-shadow(0 0 8px var(--ember-glow));
}

.brand-word {
  font-family: var(--font-display);
  font-size: var(--fs-lg);
  font-weight: 800;
  line-height: 1;
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

.brand-word em {
  font-style: normal;
  color: var(--ember);
}

/* Desktop navigation: mono labels, ember underline draws in on hover */
.main-nav {
  display: flex;
  gap: var(--space-8);
  justify-self: end;
}

.nav-link {
  position: relative;
  padding-block: var(--space-2);
  font-family: var(--font-mono);
  font-size: var(--fs-xs);
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--muted);
  text-decoration: none;
  transition: color var(--dur-fast) var(--ease-out);
}

.nav-link::after {
  content: "";
  position: absolute;
  inset-inline: 0;
  inset-block-end: 0;
  block-size: 1px;
  background: var(--ember);
  transform: scaleX(0);
  transform-origin: left;
  transition: transform var(--dur) var(--ease-out);
}

.nav-link:hover,
.nav-link.is-active {
  color: var(--text);
}

.nav-link:hover::after,
.nav-link:focus-visible::after,
.nav-link.is-active::after {
  transform: scaleX(1);
}

/* Index numbers and the menu footer only exist in the mobile overlay */
.nav-index,
.nav-extra {
  display: none;
}

/* CTA: hairline pill; the large radius clamps to a full pill at this height */
.nav-cta {
  position: relative;
  z-index: 1;
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  block-size: 2.5rem;
  padding-inline: var(--space-4);
  border: 1px solid var(--line-strong);
  border-radius: var(--radius-lg);
  font-family: var(--font-mono);
  font-size: var(--fs-xs);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--text);
  text-decoration: none;
  white-space: nowrap;
  -webkit-tap-highlight-color: transparent;
  transition:
    border-color var(--dur-fast) var(--ease-out),
    box-shadow var(--dur) var(--ease-out),
    background-color var(--dur-fast) var(--ease-out),
    color var(--dur-fast) var(--ease-out);
}

.nav-cta:hover {
  border-color: var(--ember);
  box-shadow: 0 0 24px -6px var(--ember-glow);
}

/* Menu toggle: hidden on desktop */
.menu-toggle {
  display: none;
}

/* Mobile (< 960px): toggle and full-screen overlay navigation */
@media (width < 960px) {
  .nav-wrap {
    gap: var(--space-4);
  }

  .menu-toggle {
    position: relative;
    z-index: 1;
    justify-self: end;
    display: block;
    inline-size: 2.75rem;
    block-size: 2.75rem;
    margin-inline-end: calc(var(--space-2) * -1);
    padding: 0;
    border: 1px solid transparent;
    border-radius: 50%;
    background: transparent;
    color: var(--text);
    cursor: pointer;
    -webkit-tap-highlight-color: transparent;
    transition:
      background-color var(--dur-fast) var(--ease-out),
      border-color var(--dur) var(--ease-out),
      color var(--dur-fast) var(--ease-out);
  }

  .menu-toggle:focus-visible,
  body.is-menu-open .menu-toggle {
    border-color: var(--line-strong);
    background: color-mix(in srgb, var(--text) 6%, transparent);
  }

  /* Two bars morph into an X when the body carries .is-menu-open */
  .menu-toggle-bar {
    position: absolute;
    inset-inline-start: 50%;
    inset-block-start: 50%;
    inline-size: 1.25rem;
    block-size: 2px;
    border-radius: 1px;
    background: currentColor;
    transform: translate(-50%, calc(-50% + var(--y, 0px))) rotate(var(--r, 0deg));
    transition: transform var(--dur) var(--ease-out);
  }

  .menu-toggle-bar:first-child {
    --y: -4px;
  }

  .menu-toggle-bar:nth-child(2) {
    --y: 4px;
  }

  body.is-menu-open .menu-toggle-bar {
    --y: 0px;
  }

  body.is-menu-open .menu-toggle-bar:first-child {
    --r: 45deg;
  }

  body.is-menu-open .menu-toggle-bar:nth-child(2) {
    --r: -45deg;
  }

  /* The scrolled bar would draw a second band over the overlay */
  body.is-menu-open .site-header::before {
    opacity: 0;
  }

  body.is-menu-open .site-header {
    border-block-end-color: transparent;
  }

  html:has(body.is-menu-open) {
    overflow: hidden;
  }

  /* Overlay: opens as a circle growing from the toggle. Visibility waits on close so the reveal can reverse.
     justify-self must stretch: on an abspos grid child, `end` shrinks the box to its content. */
  .main-nav {
    --origin: calc(100% - 2.5rem) calc(env(safe-area-inset-top) + var(--header-h) / 2);
    position: fixed;
    inset: 0;
    z-index: 0;
    justify-self: stretch;
    flex-direction: column;
    gap: 0;
    padding:
      calc(env(safe-area-inset-top) + var(--header-h) + var(--space-8))
      max(var(--space-6), env(safe-area-inset-right))
      calc(env(safe-area-inset-bottom) + var(--space-6))
      max(var(--space-6), env(safe-area-inset-left));
    overflow-y: auto;
    overscroll-behavior: contain;
    background:
      radial-gradient(120% 55% at 50% 115%, rgb(255 107 44 / 0.2), transparent 60%),
      radial-gradient(80% 40% at 100% 0%, rgb(143 227 234 / 0.06), transparent 70%),
      var(--bg);
    clip-path: circle(0 at var(--origin));
    visibility: hidden;
    transition:
      clip-path calc(var(--dur) * 0.9) var(--ease-in-out),
      visibility 0s linear calc(var(--dur) * 0.9);
  }

  .main-nav.is-open {
    clip-path: circle(150% at var(--origin));
    visibility: visible;
    transition:
      clip-path var(--dur-slow) var(--ease-out),
      visibility 0s;
  }

  /* Links: big display type, index on the left, hairline below; they rise in one after another */
  .nav-link {
    --i: 0;
    display: flex;
    align-items: baseline;
    gap: var(--space-4);
    padding-block: var(--space-4);
    border-block-end: 1px solid var(--line);
    font-family: var(--font-display);
    font-size: clamp(2.25rem, 9vw, 3.25rem);
    font-weight: 700;
    line-height: 1;
    letter-spacing: 0.01em;
    color: var(--text);
    opacity: 0;
    transform: translateY(var(--space-6));
    transition:
      transform var(--dur) var(--ease-out),
      opacity var(--dur) var(--ease-out),
      color var(--dur-fast) var(--ease-out);
    -webkit-tap-highlight-color: transparent;
  }

  .nav-link::after {
    inset-block-end: -1px;
    transition: transform var(--dur-slow) var(--ease-out);
  }

  .nav-index {
    display: inline;
    min-inline-size: 2ch;
    font-family: var(--font-mono);
    font-size: var(--fs-xs);
    font-weight: 400;
    letter-spacing: 0.1em;
    color: var(--muted);
    transition: color var(--dur-fast) var(--ease-out);
  }

  .nav-link.is-active,
  .nav-link:active {
    color: var(--ember);
  }

  .nav-link.is-active .nav-index {
    color: var(--ember);
  }

  /* The underline stays a hairline accent here, not a full rule */
  .nav-link:hover::after,
  .nav-link:focus-visible::after {
    transform: scaleX(0);
  }

  .nav-link.is-active::after {
    transform: scaleX(1);
  }

  .nav-link:nth-child(2) { --i: 1; }
  .nav-link:nth-child(3) { --i: 2; }
  .nav-link:nth-child(4) { --i: 3; }

  .nav-extra {
    --i: 4;
    display: grid;
    gap: var(--space-4);
    justify-items: center;
    margin-block-start: auto;
    padding-block-start: var(--space-8);
    opacity: 0;
    transform: translateY(var(--space-4));
    transition: transform var(--dur) var(--ease-out), opacity var(--dur) var(--ease-out);
  }

  .nav-whatsapp {
    font-weight: 500;
  }

  .main-nav.is-open .nav-link,
  .main-nav.is-open .nav-extra {
    opacity: 1;
    transform: none;
    transition-delay: calc(var(--dur-fast) * 0.5 + var(--i) * 60ms);
  }
}

/* Phones: the CTA stays beside the toggle, just tighter */
@media (width < 640px) {
  .brand {
    inline-size: clamp(7.75rem, 30vw, 9.875rem);
  }

  .nav-cta {
    justify-self: end;
    block-size: 2.25rem;
    padding-inline: var(--space-3);
    font-size: 0.6875rem;
    letter-spacing: 0.04em;
  }

  .nav-cta .pulse-dot {
    display: none;
  }
}

/* The CTA is the simulator's only way in, so on its page it lights up as the current location */
html[data-page="simulador"] .nav-cta {
  border-color: var(--ember);
  background: var(--ember);
  color: var(--bg);
}

html[data-page="simulador"] .nav-cta .pulse-dot {
  background: var(--bg);
  box-shadow: none;
}

/* Footer: hairline top border, one row on desktop */
.site-footer {
  padding-block: var(--space-12) calc(var(--space-12) + env(safe-area-inset-bottom));
  border-block-start: 1px solid var(--line);
  color: var(--muted);
  font-size: var(--fs-sm);
}

.footer-inner {
  display: grid;
  grid-template-columns: auto 1fr auto;
  align-items: center;
  gap: var(--space-4) var(--space-8);
}

.footer-inner > * {
  margin: 0;
}

.footer-inner > a:not(.brand) {
  color: var(--muted);
  text-decoration: none;
  transition: color var(--dur-fast) var(--ease-out);
}

.footer-inner > a:not(.brand):hover {
  color: var(--text);
}

/* Footer stacks and centers on mobile */
@media (width < 960px) {
  .footer-inner {
    grid-template-columns: 1fr;
    justify-items: center;
    text-align: center;
  }
}