/*
  Continental Media — site header block styles.
  Namespaced under .cm-site-header. Depends on assets/css/tokens.css.
*/

.cm-site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  font-size: 0.9375rem; /* base for unsized wrappers, see about-teaser.css's .cm-about for why */
}

/* Skip link — hidden until keyboard focus, first stop on the page */
.cm-site-header__skip {
  position: absolute;
  z-index: 3;
  top: 0;
  left: 0;
  transform: translateY(-150%);
  background: var(--cm-color-fg);
  color: var(--cm-color-bg);
  font-family: var(--cm-font-body);
  font-weight: 600;
  font-size: 0.9375rem;
  padding: 0.85em 1.25em;
  text-decoration: none;
  transition: transform var(--cm-duration-fast) var(--cm-ease-out);
}

.cm-site-header__skip:focus-visible {
  transform: translateY(0);
}

/* ---------- Bar ---------- */

.cm-site-header__bar {
  position: relative;
  z-index: 2;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--cm-gutter);
  /* Padding stays constant across states — only paint properties
     (background/border/blur) and the logo's transform change on scroll,
     never layout properties, so this transition never triggers reflow. */
  padding: clamp(1rem, 2.4vw, 1.75rem) var(--cm-gutter);
  background: transparent;
  border-bottom: 1px solid transparent;
  backdrop-filter: none;
  transition:
    background-color var(--cm-duration-fast) var(--cm-ease-out),
    border-color var(--cm-duration-fast) var(--cm-ease-out);
}

/* Scrolled past the top (any page), or an interior page with no video/photo
   hero to overlay transparently (--solid, set in markup, e.g. /nosotros —
   its page-hero's own gradient is *lightest* right at the top where this
   bar sits, so transparent can't guarantee contrast there from first
   paint). Same compact treatment either way. */
.cm-site-header.is-scrolled .cm-site-header__bar,
.cm-site-header--solid .cm-site-header__bar {
  background: rgba(10, 11, 13, 0.86);
  -webkit-backdrop-filter: blur(14px);
  backdrop-filter: blur(14px);
  border-bottom-color: rgba(255, 255, 255, 0.08);
}

.cm-site-header__logo-link {
  display: inline-flex;
  align-items: center;
  flex-shrink: 0;
  outline-offset: 6px;
}

.cm-site-header__logo {
  display: block;
  height: clamp(32px, 4.2vw, 52px);
  width: auto;
  transform: scale(1);
  transform-origin: left center;
  transition: transform var(--cm-duration-fast) var(--cm-ease-out);
}

.cm-site-header.is-scrolled .cm-site-header__logo,
.cm-site-header--solid .cm-site-header__logo {
  transform: scale(0.76);
}

.cm-site-header__menu-toggle {
  display: inline-flex;
  align-items: center;
  gap: 0.75rem;
  background: transparent;
  border: 0;
  margin: 0;
  padding: 0.5rem;
  margin-right: -0.5rem;
  cursor: pointer;
  color: var(--cm-color-fg);
  font-family: var(--cm-font-body);
  font-size: 0.9375rem;
  -webkit-tap-highlight-color: transparent;
}

.cm-site-header__menu-icon {
  position: relative;
  display: inline-flex;
  flex-direction: column;
  justify-content: center;
  align-items: flex-end;
  width: 26px;
  height: 16px;
}

.cm-site-header__menu-bar {
  display: block;
  width: 100%;
  height: 1.5px;
  background: currentColor;
  border-radius: 1px;
  transform-origin: center;
  transition:
    transform var(--cm-duration-fast) var(--cm-ease-out),
    opacity var(--cm-duration-fast) var(--cm-ease-out),
    width var(--cm-duration-fast) var(--cm-ease-out);
}

.cm-site-header__menu-bar:nth-child(2) {
  width: 70%;
  margin-top: 6px;
}

.cm-site-header__menu-bar:nth-child(3) {
  margin-top: 6px;
}

.cm-site-header__menu-label {
  font-size: 0.75rem;
  font-weight: 500;
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

/* Morph to X when open */
.cm-site-header__menu-toggle[aria-expanded='true'] .cm-site-header__menu-bar:nth-child(1) {
  transform: translateY(7.5px) rotate(45deg);
}

.cm-site-header__menu-toggle[aria-expanded='true'] .cm-site-header__menu-bar:nth-child(2) {
  opacity: 0;
  width: 0;
}

.cm-site-header__menu-toggle[aria-expanded='true'] .cm-site-header__menu-bar:nth-child(3) {
  width: 100%;
  transform: translateY(-7.5px) rotate(-45deg);
}

.cm-site-header__menu-toggle:focus-visible,
.cm-site-header__logo-link:focus-visible {
  outline: 2px solid var(--cm-color-fg);
  outline-offset: 4px;
  border-radius: var(--cm-radius-sm);
}

/* ---------- Nav panel (disclosure, not a modal) ---------- */

.cm-site-header__nav {
  /* Fixed to the real viewport unconditionally — the header itself is
     already position:fixed (see .cm-site-header above), so this just
     needs to fill it; inset:0 here is not inheriting any min-height
     floor the way the old hero-embedded version had to guard against. */
  position: fixed;
  inset: 0;
  z-index: 1;
  overflow-x: hidden;
  overflow-y: auto;
  overscroll-behavior: contain;
  -webkit-overflow-scrolling: touch;
  /* Fully solid, not a low alpha: a full-screen nav overlay should never
     let the page behind it show through, even faintly. */
  background: var(--cm-color-bg);
  opacity: 0;
  visibility: hidden;
  transition:
    opacity var(--cm-duration-fast) var(--cm-ease-out),
    visibility 0s linear var(--cm-duration-fast);
}

/* Purely decorative depth — restrained: one soft accent glow, not a scene.
   Kept fully inside the box (no negative offsets) so it can never be the
   thing that forces scroll — overflow-x:hidden above is a backstop, not
   a license to size this carelessly. */
.cm-site-header__nav::before {
  content: '';
  position: absolute;
  top: 0;
  right: 0;
  width: 45%;
  height: 45%;
  background: radial-gradient(circle at top right, rgba(30, 95, 255, 0.16), transparent 70%);
  pointer-events: none;
}

.cm-site-header__nav.is-open {
  opacity: 1;
  visibility: visible;
  transition:
    opacity var(--cm-duration-fast) var(--cm-ease-out),
    visibility 0s linear 0s;
}

.cm-site-header__nav-inner {
  position: relative;
  z-index: 1;
  min-height: 100%;
  display: flex;
  flex-direction: column;
  justify-content: center;
  gap: clamp(1.5rem, 4vh, 2.5rem);
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding: clamp(4.5rem, 11vh, 6.5rem) var(--cm-gutter) clamp(2rem, 4vh, 3rem);
}

/* ----- Link list: numbered, dividers, arrow reveal on hover ----- */

.cm-site-header__nav-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 0.1em;
}

.cm-site-header__nav-item {
  border-top: 1px solid rgba(255, 255, 255, 0.12);
}

.cm-site-header__nav-item:last-child {
  border-bottom: 1px solid rgba(255, 255, 255, 0.12);
}

.cm-site-header__nav-list a {
  position: relative;
  display: flex;
  align-items: baseline;
  gap: clamp(0.75rem, 2vw, 1.5rem);
  padding: 0.4em 0.1em;
  font-family: var(--cm-font-display);
  font-weight: 600;
  font-size: clamp(1.85rem, 2.4vw + 1rem, 2.75rem);
  letter-spacing: -0.02em;
  color: var(--cm-color-fg);
  text-decoration: none;
  transition: color var(--cm-duration-fast) var(--cm-ease-out);
}

.cm-site-header__nav-index {
  font-family: var(--cm-font-body);
  font-weight: 500;
  font-size: 0.9375rem;
  font-variant-numeric: tabular-nums;
  /* 0.55 alpha on near-black clears normal-text AA at 6.3:1 */
  color: rgba(255, 255, 255, 0.55);
}

.cm-site-header__nav-text {
  flex: 1;
}

.cm-site-header__nav-arrow {
  align-self: center;
  width: clamp(20px, 2.2vw, 28px);
  height: clamp(20px, 2.2vw, 28px);
  flex-shrink: 0;
  fill: none;
  stroke: currentColor;
  stroke-width: 1.5;
  stroke-linecap: round;
  stroke-linejoin: round;
  opacity: 0;
  transform: translateX(-10px);
  transition:
    opacity var(--cm-duration-fast) var(--cm-ease-out),
    transform var(--cm-duration-fast) var(--cm-ease-out);
}

.cm-site-header__nav-list a:hover,
.cm-site-header__nav-list a:focus-visible {
  /* Large text (>=32px): AA needs 3:1, not 4.5:1 — --cm-color-accent clears
     it at 3.97:1 against this near-black panel. */
  color: var(--cm-color-accent);
}

.cm-site-header__nav-list a:hover .cm-site-header__nav-arrow,
.cm-site-header__nav-list a:focus-visible .cm-site-header__nav-arrow {
  opacity: 1;
  transform: translateX(0);
}

.cm-site-header__nav-list a:focus-visible {
  outline: 2px solid currentColor;
  outline-offset: 6px;
  border-radius: var(--cm-radius-sm);
}

/* Spotlight: the rest of the list dims while one item is hovered. */
@media (hover: hover) {
  .cm-site-header__nav-list:has(.cm-site-header__nav-item:hover) .cm-site-header__nav-item:not(:hover) a {
    color: rgba(255, 255, 255, 0.35);
  }
}

/* ----- Aside: tagline, social, copyright ----- */

.cm-site-header__nav-aside {
  display: flex;
  flex-direction: column;
  gap: clamp(1.5rem, 4vh, 2.25rem);
  padding: clamp(1.5rem, 4vh, 2rem) 0 0 0;
  border-top: 1px solid rgba(255, 255, 255, 0.12);
}

.cm-site-header__nav-tagline {
  margin: 0;
  max-width: 30ch;
  font-family: var(--cm-font-body);
  font-weight: 500;
  font-size: clamp(1rem, 1.4vw + 0.5rem, 1.25rem);
  line-height: 1.45;
  color: rgba(255, 255, 255, 0.72);
}

.cm-site-header__nav-social {
  display: flex;
  align-items: center;
  gap: 1.25rem;
  flex-wrap: wrap;
}

.cm-site-header__nav-social-label {
  font-family: var(--cm-font-body);
  font-weight: 500;
  font-size: 0.75rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  /* 0.5 alpha clears normal-text AA at 5.3:1 */
  color: rgba(255, 255, 255, 0.5);
}

.cm-site-header__nav-social-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  gap: 0.5rem;
}

.cm-site-header__nav-social-list a {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 42px;
  height: 42px;
  border-radius: 50%;
  border: 1.5px solid rgba(255, 255, 255, 0.25);
  color: var(--cm-color-fg);
  cursor: pointer;
  transition:
    background-color var(--cm-duration-fast) var(--cm-ease-out),
    border-color var(--cm-duration-fast) var(--cm-ease-out),
    color var(--cm-duration-fast) var(--cm-ease-out),
    transform var(--cm-duration-fast) var(--cm-ease-out);
}

.cm-site-header__nav-social-list svg {
  width: 19px;
  height: 19px;
  fill: none;
  stroke: currentColor;
  stroke-width: 1.5;
  stroke-linecap: round;
  stroke-linejoin: round;
}

.cm-site-header__nav-social-dot {
  fill: currentColor;
  stroke: none;
}

.cm-site-header__nav-social-list a:hover,
.cm-site-header__nav-social-list a:focus-visible {
  background: var(--cm-color-accent);
  border-color: var(--cm-color-accent);
  color: var(--cm-color-on-accent);
  transform: translateY(-2px);
}

.cm-site-header__nav-social-list a:focus-visible {
  outline: 2px solid var(--cm-color-fg);
  outline-offset: 3px;
}

.cm-site-header__nav-copyright {
  margin: 0;
  font-family: var(--cm-font-body);
  /* Same tier as .cm-site-header__nav-social-label (both quiet metadata)
     rather than an extra in-between size. */
  font-size: 0.75rem;
  /* 0.5 alpha clears normal-text AA at 5.3:1 */
  color: rgba(255, 255, 255, 0.5);
}

/* ----- Entrance stagger when the menu opens ----- */

.cm-site-header__nav-item,
.cm-site-header__nav-aside > * {
  opacity: 0;
  transform: translateY(14px);
  transition:
    opacity var(--cm-duration-base) var(--cm-ease-out),
    transform var(--cm-duration-base) var(--cm-ease-out);
}

.cm-site-header__nav.is-open .cm-site-header__nav-item,
.cm-site-header__nav.is-open .cm-site-header__nav-aside > * {
  opacity: 1;
  transform: translateY(0);
}

.cm-site-header__nav.is-open .cm-site-header__nav-item:nth-child(1) { transition-delay: 60ms; }
.cm-site-header__nav.is-open .cm-site-header__nav-item:nth-child(2) { transition-delay: 100ms; }
.cm-site-header__nav.is-open .cm-site-header__nav-item:nth-child(3) { transition-delay: 140ms; }
.cm-site-header__nav.is-open .cm-site-header__nav-item:nth-child(4) { transition-delay: 180ms; }
.cm-site-header__nav.is-open .cm-site-header__nav-item:nth-child(5) { transition-delay: 220ms; }
.cm-site-header__nav.is-open .cm-site-header__nav-item:nth-child(6) { transition-delay: 260ms; }
.cm-site-header__nav.is-open .cm-site-header__nav-aside > *:nth-child(1) { transition-delay: 320ms; }
.cm-site-header__nav.is-open .cm-site-header__nav-aside > *:nth-child(2) { transition-delay: 360ms; }
.cm-site-header__nav.is-open .cm-site-header__nav-aside > *:nth-child(3) { transition-delay: 400ms; }

@media (prefers-reduced-motion: reduce) {
  .cm-site-header__nav-item,
  .cm-site-header__nav-aside > * {
    opacity: 1;
    transform: none;
    transition: none;
  }

  .cm-site-header__bar,
  .cm-site-header__logo {
    transition: none;
  }
}

/* ----- Desktop: two-column layout ----- */

@media (min-width: 901px) {
  .cm-site-header__nav-inner {
    display: grid;
    grid-template-columns: 1.5fr 1fr;
    align-items: start;
    align-content: center;
    gap: clamp(2rem, 6vw, 5rem);
  }

  .cm-site-header__nav-aside {
    border-top: 0;
    padding-left: clamp(2rem, 4vw, 3rem);
    border-left: 1px solid rgba(255, 255, 255, 0.12);
    height: fit-content;
  }
}

/* ---------- Responsive ---------- */

@media (max-width: 640px) {
  /* The base clamp() floors out at 32px on narrow screens already (4.2vw
     stays under it below ~760px), and the scrolled/solid state's own
     0.76 scale-down then shrinks that further to ~24px — too small next
     to the menu label at this size. Raise the floor and ease the
     scale-down specifically on mobile; desktop/tablet keep the original
     clamp + 0.76 untouched. */
  .cm-site-header__logo {
    height: 40px;
  }

  .cm-site-header.is-scrolled .cm-site-header__logo,
  .cm-site-header--solid .cm-site-header__logo {
    transform: scale(0.9);
  }

  .cm-site-header__menu-label {
    display: none;
  }

  .cm-site-header__nav-tagline {
    display: none;
  }

  .cm-site-header__nav-inner {
    padding-top: clamp(3.5rem, 9vh, 5rem);
    padding-bottom: clamp(1.5rem, 3vh, 2rem);
    gap: clamp(1rem, 3vh, 1.5rem);
  }

  .cm-site-header__nav-aside {
    padding-top: clamp(1rem, 3vh, 1.5rem);
    gap: clamp(1rem, 3vh, 1.25rem);
  }
}

@media (min-width: 641px) and (max-width: 900px) {
  .cm-site-header__menu-label {
    display: none;
  }
}

/* Short-viewport safety net: orthogonal to width. */
@media (max-height: 700px) {
  .cm-site-header__nav-tagline {
    display: none;
  }

  .cm-site-header__nav-inner {
    padding-top: clamp(3rem, 10vh, 4rem);
    padding-bottom: clamp(1rem, 3vh, 1.5rem);
    gap: clamp(0.75rem, 3vh, 1.25rem);
  }

  .cm-site-header__nav-list {
    gap: 0;
  }

  .cm-site-header__nav-list a {
    font-size: clamp(1.25rem, 5vh, 2rem);
    padding-block: 0.22em;
  }

  .cm-site-header__nav-arrow {
    display: none;
  }

  .cm-site-header__nav-social-list a {
    width: 34px;
    height: 34px;
  }

  .cm-site-header__nav-social-list svg {
    width: 16px;
    height: 16px;
  }

  .cm-site-header__nav-aside {
    padding-top: clamp(0.75rem, 3vh, 1rem);
    gap: clamp(0.75rem, 2vh, 1rem);
  }
}

@media (max-height: 520px) {
  .cm-site-header__nav-copyright {
    display: none;
  }
}