/* ================================================================= */
/* Tab rail (vertical side navigation, desktop)                      */
/* ================================================================= */

.tab-rail {
  position: fixed;
  z-index: 55;
  left: 0;
  top: 25%;
  display: grid;
  gap: 0.3rem;
  transform: translateX(-0.25rem);
}

.tab-rail a {
  writing-mode: vertical-rl;
  padding: 0.8rem 0.45rem;
  background: var(--paper);
  border: 2px solid var(--ink);
  border-left: 0;
  border-radius: 0 1rem 1rem 0;
  font: 700 0.6rem var(--mono);
  text-transform: uppercase;
  transition: padding 0.3s var(--ease), background-color 0.2s;
}

.tab-rail a:hover {
  padding-right: 1rem;
  background: var(--yellow);
}

/* Current page gets a subtler resting state; hover is louder. */
.tab-rail a[aria-current="page"] {
  padding-right: 1rem;
  background: var(--yellow);
}

.tab-rail a:focus-visible {
  outline: 3px solid var(--clay);
  outline-offset: 4px;
}

/* ================================================================= */
/* Menu button                                                       */
/* ================================================================= */

.menu-button {
  position: fixed;
  z-index: 60;
  right: 1.2rem;
  top: 1.1rem;
  width: 3rem;
  height: 3rem;
  border: 2px solid var(--ink);
  border-radius: 48% 52% 45% 55%;
  background: var(--yellow);
  box-shadow: 3px 4px 0 var(--ink);
  font: 700 0.55rem var(--mono);
  text-transform: uppercase;
  transition: transform 0.2s var(--ease), box-shadow 0.2s var(--ease), background-color 0.2s;
}

.menu-button:hover {
  transform: translate(-2px, -2px);
  box-shadow: 5px 6px 0 var(--ink);
}

.menu-button[aria-expanded="true"] {
  background: var(--pink);
}

.menu-button:focus-visible {
  outline: 3px solid var(--ink);
  outline-offset: 3px;
}

/* ================================================================= */
/* Site menu (full-screen overlay)                                   */
/* ================================================================= */

.site-menu {
  position: fixed;
  inset: 0;
  z-index: 58;
  display: grid;
  place-items: center;
  background: var(--blue-dark);
  color: var(--cream);
  clip-path: inset(100% 0 0 0);
  pointer-events: none;
  transition: clip-path 0.65s var(--ease);
}

/*
 * FIXED: The corrected nav.js toggles aria-hidden, not a class.
 * React to [aria-hidden="false"] instead of .is-open so ARIA and
 * visual state stay in sync.
 */
.site-menu[aria-hidden="false"] {
  clip-path: inset(0);
  pointer-events: auto;
}

.site-menu__inner {
  width: min(calc(100% - 2 * var(--gutter)), var(--max));
  min-height: 72vh;
  min-height: 72svh;
  max-height: 100vh;
  overflow-y: auto;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
}

.site-menu .menu-intro {
  max-width: 21ch;
  font: clamp(2.4rem, 5vw, 5.5rem) / 0.9 var(--display);
  margin-top: 1rem;
}

.site-menu nav {
  display: flex;
  gap: 1.2rem;
  flex-wrap: wrap;
  /* FIXED: `end` → `flex-end` */
  align-items: flex-end;
}

.site-menu nav a {
  font: clamp(2.2rem, 6vw, 7rem) / 0.85 var(--hand);
  color: var(--cream);
  transition: color 0.2s, transform 0.35s var(--ease);
}

.site-menu nav a:hover,
.site-menu nav a[aria-current="page"] {
  color: var(--yellow);
  transform: rotate(-4deg) translateY(-0.3rem);
}

.site-menu nav a:focus-visible {
  color: var(--yellow);
  outline: 3px solid var(--cream);
  outline-offset: 6px;
}

.site-menu__footer {
  display: flex;
  justify-content: space-between;
  gap: 2rem;
  border-top: 1px solid rgba(244, 237, 218, 0.4);
  padding-top: 1rem;
}

.site-menu__footer a {
  font: 0.65rem var(--mono);
  text-transform: uppercase;
}

.site-menu__footer a:focus-visible {
  outline: 2px solid var(--cream);
  outline-offset: 4px;
}

/* ================================================================= */
/* Low-data control + readout                                        */
/* ================================================================= */

.lowdata-control {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font: 0.58rem var(--mono);
  text-transform: uppercase;
}

.lowdata-control input {
  accent-color: var(--clay);
}

.lowdata-readout {
  position: fixed;
  z-index: 70;
  right: 1rem;
  top: 4.8rem;
  background: var(--yellow);
  border: 2px solid var(--ink);
  padding: 0.45rem 0.6rem;
  display: none;
  font: 0.58rem var(--mono);
  box-shadow: 3px 3px 0 var(--ink);
  transition: opacity 0.2s;
}

body.low-data .lowdata-readout {
  display: block;
}

/* ================================================================= */
/* Responsive                                                        */
/* ================================================================= */

@media (max-width: 767px) {
  .tab-rail {
    top: auto;
    bottom: 0;
    left: 0;
    right: 0;
    display: flex;
    justify-content: space-around;
    transform: none;
    background: var(--ink);
    padding:
      0.55rem calc(0.4rem + env(safe-area-inset-left))
      calc(0.55rem + env(safe-area-inset-bottom))
      calc(0.4rem + env(safe-area-inset-right));
    gap: 0.2rem;
  }

  .tab-rail a {
    writing-mode: horizontal-tb;
    border: 2px solid var(--cream);
    border-radius: 1rem;
    background: transparent;
    color: var(--cream);
    padding: 0.5rem 0.6rem;
    font-size: 0.5rem;
  }

  .tab-rail a[aria-current="page"],
  .tab-rail a:hover {
    background: var(--yellow);
    color: var(--ink);
    padding-right: 0.6rem;
  }

  .menu-button {
    right: 1rem;
    top: 1rem;
  }

  .site-menu {
    padding-bottom: 4.5rem;
  }

  .site-menu__inner {
    min-height: 80vh;
    min-height: 80svh;
  }

  .site-menu nav {
    display: grid;
    gap: 0.7rem;
    align-items: flex-end;
  }

  .site-menu nav a {
    font-size: 3.2rem;
  }

  .site-menu__footer {
    display: block;
  }

  .site-menu__footer a {
    display: block;
    margin-top: 1rem;
  }
}