/* ZelvIA 2.0 — global header.
 * Selector de tema: botón orb 40×40 (zona táctil) con anillo visual de 34 px
 * y el mismo relieve que la pieza del isotipo (DESIGN.md §7 y §12 bis).
 */

zelvia-header {
  display: block;
  height: 0;
  font-family: var(--zv-font-ui);
}

/* ── Nav container ─────────────────────────────────────────────────────────── */
.zv-header__nav {
  position: fixed;
  inset: 0 0 auto;
  z-index: 1000;
  display: block;
  height: 76px;
  margin: 0;
  padding: 0;
  border: 0;
  border-bottom: 2px solid var(--zv-color-teal-graphic, #00A99D);
  border-radius: 0;
  background: var(--zv-color-bg);
  box-shadow: 0 1px 0 rgba(0,169,157,.22), 0 3px 9px rgba(11,19,32,.07);
  color: var(--zv-color-text);
}

.zv-header__inner {
  display: flex;
  align-items: center;
  width: min(1120px, calc(100% - 40px));
  height: 100%;
  margin: 0 auto;
}

/* ── Brand lockup ──────────────────────────────────────────────────────────── */
.zv-header__brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  flex: 0 0 auto;
  color: var(--zv-color-ink);
  text-decoration: none;
}

/* Pieza de papel en alto que envuelve el isotipo (DESIGN.md §6 / §12 bis) */
.zv-header__mark-piece {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 34px;
  height: 34px;
  border-radius: var(--zv-radius-label, 6px);
  border: 1px solid var(--zv-color-line-strong, #D8CFBC);
  background: var(--zv-color-surface, #FFFDF8);
  box-shadow: var(--zv-shadow-e1, inset 0 1px 0 #fff, 0 1px 0 rgba(60,48,26,.10), 0 6px 12px -10px rgba(60,48,26,.5));
  flex: 0 0 auto;
}

.zv-header__brand-mark {
  display: block;
  width: 24px;
  height: 24px;
  object-fit: contain;
}

.zv-header__wordmark {
  color: var(--zv-color-ink);
  font-family: var(--zv-font-display);
  font-size: 21px;
  font-weight: var(--zv-font-weight-bold);
  line-height: 28px;
  letter-spacing: -0.6px;
}

.zv-header__wordmark-accent {
  color: var(--zv-color-teal-text, #00665E);
}

/* ── Nav links ─────────────────────────────────────────────────────────────── */
.zv-header__links {
  display: flex;
  align-items: center;
  gap: 24px;
  margin: 0 0 0 auto;
  padding: 0;
  list-style: none;
}

.zv-header__link {
  display: inline-flex;
  align-items: center;
  min-height: 40px;
  color: var(--zv-color-muted);
  font-family: var(--zv-font-ui);
  font-size: 13px;
  font-weight: var(--zv-font-weight-medium);
  line-height: 18px;
  text-decoration: none;
  transition: color var(--zv-motion-micro-duration) var(--zv-motion-micro-easing);
}

.zv-header__link:hover,
.zv-header__link[aria-current="page"] {
  color: var(--zv-color-ink);
}

/* ── Actions ───────────────────────────────────────────────────────────────── */
.zv-header__actions {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-left: clamp(30px, 7vw, 110px);
}

/* ── Orb — selector de tema cíclico ────────────────────────────────────────── */

/* Botón transparente 40×40 — zona táctil mínima WCAG sin deformar el círculo */
.zv-header__orb {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  padding: 0;
  flex: 0 0 auto;
  border: none;
  background: transparent;
  cursor: pointer;
  touch-action: manipulation;
}

/* Anillo visual 34×34 — el overflow:hidden recorta la tinta aquí */
.zv-header__orb-ring {
  position: relative;
  width: 34px;
  height: 34px;
  border-radius: 50%;
  border: 1px solid var(--zv-color-line-strong, #CFC5B1);
  background: var(--zv-color-surface, #FFFDF8);
  overflow: hidden;
  box-shadow: var(--zv-shadow-e1, inset 0 1px 0 #fff, 0 1px 0 rgba(60,48,26,.10), 0 6px 12px -10px rgba(60,48,26,.5));
  transition: border-color 200ms var(--zv-motion-micro-easing);
  pointer-events: none;
}

.zv-header__orb:hover .zv-header__orb-ring {
  border-color: var(--zv-color-teal-graphic, #00A99D);
}

/* Mitad oscura — clip-path cambia por estado */
.zv-header__orb-ink {
  position: absolute;
  inset: 0;
  background: var(--zv-color-navy, #0B1622);
  clip-path: polygon(100% 0, 100% 0, 100% 0, 100% 0);
  transition: clip-path 420ms cubic-bezier(0.2, 0, 0, 1);
}

/* sistema (0): triángulo inferior-izquierdo oscuro */
.zv-header__orb[data-s="0"] .zv-header__orb-ink {
  clip-path: polygon(100% 0, 100% 100%, 0 100%);
}
/* claro (1): sin oscuro */
.zv-header__orb[data-s="1"] .zv-header__orb-ink {
  clip-path: polygon(100% 0, 100% 0, 100% 0, 100% 0);
}
/* oscuro (2): todo oscuro */
.zv-header__orb[data-s="2"] .zv-header__orb-ink {
  clip-path: polygon(0 0, 100% 0, 100% 100%, 0 100%);
}

/* Punto teal */
.zv-header__orb-dot {
  position: absolute;
  left: 50%;
  top: 50%;
  width: 9px;
  height: 9px;
  margin: -4.5px 0 0 -4.5px;
  border-radius: 50%;
  background: var(--zv-color-teal-graphic, #00A99D);
  box-shadow: 0 0 0 3px rgba(0,169,157,.18);
  transition: transform 420ms cubic-bezier(0.34, 1.3, 0.64, 1),
              background 300ms;
}

/* sistema: punto en el centro (sobre la frontera de la diagonal) */
.zv-header__orb[data-s="0"] .zv-header__orb-dot {
  transform: translate(0, 0);
}
/* claro: punto en inferior-izquierdo (sobre el papel) */
.zv-header__orb[data-s="1"] .zv-header__orb-dot {
  transform: translate(-7px, 7px);
}
/* oscuro: punto en superior-derecho, encendido */
.zv-header__orb[data-s="2"] .zv-header__orb-dot {
  transform: translate(7px, -7px);
  background: var(--zv-color-teal-glow, #00F0D1);
  box-shadow: 0 0 8px rgba(0,240,209,.7);
}

/* ── Menú hamburguesa (solo móvil) ─────────────────────────────────────────── */
.zv-header__menu-button {
  display: none;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  padding: 8px;
  min-width: 0;
  min-height: 0;
  margin: 0;
  border: 0;
  border-radius: var(--zv-radius-label, 6px);
  background: transparent;
  color: var(--zv-color-ink);
  cursor: pointer;
}

.zv-header__menu-icon,
.zv-header__menu-icon::before,
.zv-header__menu-icon::after {
  display: block;
  width: 18px;
  height: 2px;
  background: currentColor;
  content: "";
  transition: transform var(--zv-motion-micro-duration) var(--zv-motion-micro-easing),
              opacity var(--zv-motion-micro-duration) var(--zv-motion-micro-easing);
}

.zv-header__menu-icon {
  position: relative;
}

.zv-header__menu-icon::before,
.zv-header__menu-icon::after {
  position: absolute;
  left: 0;
}

.zv-header__menu-icon::before { top: -6px; }
.zv-header__menu-icon::after  { top: 6px; }

.zv-header__menu-button[aria-expanded="true"] .zv-header__menu-icon {
  background: transparent;
}

.zv-header__menu-button[aria-expanded="true"] .zv-header__menu-icon::before {
  transform: translateY(6px) rotate(45deg);
}

.zv-header__menu-button[aria-expanded="true"] .zv-header__menu-icon::after {
  transform: translateY(-6px) rotate(-45deg);
}

/* ── Foco visible — usa teal-text (#00665E) para contraste AA ─────────────── */
.zv-header__brand:focus-visible,
.zv-header__link:focus-visible,
.zv-header__orb:focus-visible .zv-header__orb-ring,
.zv-header__menu-button:focus-visible {
  outline: 2px solid var(--zv-color-teal-text, #00665E);
  outline-offset: 3px;
}

/* ── Responsive ────────────────────────────────────────────────────────────── */
@media (max-width: 760px) {
  .zv-header__nav {
    height: 58px;
  }

  .zv-header__inner {
    width: calc(100% - 40px);
  }

  .zv-header__brand {
    gap: 8px;
  }

  .zv-header__mark-piece {
    width: 28px;
    height: 28px;
  }

  .zv-header__brand-mark {
    width: 20px;
    height: 20px;
  }

  .zv-header__wordmark {
    font-size: 18px;
    line-height: 24px;
    letter-spacing: -0.4px;
  }

  .zv-header__links {
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    display: grid;
    gap: 0;
    margin: 0;
    padding: 8px 20px 14px;
    border-bottom: 1px solid var(--zv-color-line);
    background: var(--zv-color-surface);
    opacity: 0;
    visibility: hidden;
    transform: translateY(-8px);
    pointer-events: none;
    transition: opacity var(--zv-motion-micro-duration) var(--zv-motion-micro-easing),
                transform var(--zv-motion-micro-duration) var(--zv-motion-micro-easing),
                visibility 0s linear var(--zv-motion-micro-duration);
  }

  .zv-header__links.is-open {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
    pointer-events: auto;
    transition-duration: var(--zv-motion-enter-duration);
    transition-delay: 0s;
  }

  .zv-header__link {
    min-height: 42px;
    border-bottom: 1px solid var(--zv-color-line);
  }

  .zv-header__links li:last-child .zv-header__link {
    border-bottom: 0;
  }

  .zv-header__actions {
    gap: 8px;
    margin-left: auto;
  }

  .zv-header__menu-button {
    display: inline-flex;
  }
}

/* ── Reduced motion ────────────────────────────────────────────────────────── */
@media (prefers-reduced-motion: reduce) {
  .zv-header__link,
  .zv-header__orb-ring,
  .zv-header__orb-ink,
  .zv-header__orb-dot,
  .zv-header__menu-icon,
  .zv-header__menu-icon::before,
  .zv-header__menu-icon::after,
  .zv-header__links {
    transition-duration: 0ms;
  }
}

/* Paired header pieces: one shared surface and elevation (DESIGN §4 bis). */
.zv-header__mark-piece,
.zv-header__orb-ring {
  background: var(--zv-color-surface, #FFFDF8);
  border: 1px solid var(--zv-color-line-strong, #D8CFBC);
  box-shadow: var(--zv-shadow-e1);
}
.zv-header__orb-ring { border-radius: 999px; }
/* Keep the light edge above the selector ink in every state. */
.zv-header__orb-ring::after {
  content: "";
  position: absolute;
  inset: 0;
  border-radius: inherit;
  box-shadow: inset 0 1px 0 #fff;
  pointer-events: none;
}
.zv-header__brand:hover .zv-header__mark-piece,
.zv-header__orb:hover .zv-header__orb-ring { box-shadow: var(--zv-shadow-e2); }
.zv-header__brand:active .zv-header__mark-piece,
.zv-header__orb:active .zv-header__orb-ring { box-shadow: var(--zv-shadow-e0); }