/* ═══════════════════════════════════════════════════════════════════════════
   FEDERATION OS — SHARED SHELL
   fed-shell.css · BUILD 03 · branch federation-os-v2
   ───────────────────────────────────────────────────────────────────────────
   Requires (in order): fed-tokens.css, fed-base.css, fed-components.css.
   NOT attached to any production page in BUILD 03.

   Visual target: advanced institutional software, not a game HUD.
   The exact GF logo carries the identity — give it breathing room.
   No starfields, no fake terminal output, no decorative glow.
   ═══════════════════════════════════════════════════════════════════════ */

/* ═══ COMMAND BAR (desktop ≥1024px) ═════════════════════════════════════ */
.fed-shell-bar {
  position: sticky;
  top: 0;
  z-index: var(--z-nav);
  height: var(--fed-nav-height-desktop);          /* 72px */
  display: flex;
  align-items: center;
  gap: var(--space-6);
  padding-inline: var(--fed-gutter-desktop);
  background: color-mix(in srgb, var(--fed-space) 92%, transparent);
  backdrop-filter: blur(14px);
  border-bottom: 1px solid var(--fed-border-soft);
}

/* Identity — exact logo, never altered */
.fed-shell-brand {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  text-decoration: none;
  min-height: var(--touch-target-min);
}
.fed-shell-brand img { width: 40px; height: 40px; }
.fed-shell-brand__names { display: grid; line-height: 1.2; }
.fed-shell-brand__primary {
  font-family: var(--font-fed-display);
  font-weight: 700;
  font-size: var(--text-sm);
  letter-spacing: 0.14em;
  color: var(--fed-text-display);
  white-space: nowrap;
}
.fed-shell-brand__system {
  font-family: var(--font-fed-system);
  font-size: var(--text-xs);
  letter-spacing: var(--system-letter-spacing-wide);
  color: var(--fed-muted);
}

/* Center navigation — system switching, not website tabs */
.fed-shell-nav {
  display: flex;
  align-items: stretch;
  gap: var(--space-1);
  margin-inline: auto;
  height: 100%;
}
.fed-shell-nav__item {
  position: relative;
  display: inline-flex;
  align-items: center;
  padding-inline: var(--space-4);
  min-height: var(--touch-target-min);
  font-family: var(--font-fed-interface);
  font-weight: 600;
  font-size: var(--text-sm);
  letter-spacing: 0.10em;
  text-transform: uppercase;
  text-decoration: none;
  color: var(--fed-muted);
  transition: color var(--motion-micro) var(--ease-fed);
}
.fed-shell-nav__item:hover { color: var(--fed-text); }
/* Active system — restrained cyan line + aria-current + label color.
   Never color alone: the line is a shape, aria-current is programmatic. */
.fed-shell-nav__item[aria-current="page"] {
  color: var(--fed-command);
}
.fed-shell-nav__item[aria-current="page"]::after {
  content: "";
  position: absolute;
  left: var(--space-4); right: var(--space-4); bottom: 0;
  height: 2px;
  background: var(--fed-command);
}
/* Unavailable system (e.g. FCC pre-launch) — visibly identified, no href */
.fed-shell-nav__item[aria-disabled="true"] {
  color: color-mix(in srgb, var(--fed-muted) 55%, transparent);
  cursor: not-allowed;
}
.fed-shell-nav__item .fed-shell-nav__flag {
  font-family: var(--font-fed-system);
  font-size: var(--text-xs);
  letter-spacing: 0.06em;
  color: var(--fed-warning);
  margin-left: var(--space-2);
}

/* Right controls */
.fed-shell-controls {
  display: flex;
  align-items: center;
  gap: var(--space-3);
}
.fed-shell-voss,
.fed-shell-status {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  min-height: var(--touch-target-min);
  padding: var(--space-2) var(--space-4);
  font-family: var(--font-fed-system);
  font-size: var(--text-xs);
  letter-spacing: var(--system-letter-spacing);
  text-transform: uppercase;
  background: transparent;
  border: 1px solid var(--fed-border-default);
  border-radius: var(--radius-xs);
  color: var(--fed-text);
  cursor: pointer;
  transition: border-color var(--motion-micro) var(--ease-fed);
}
.fed-shell-voss:hover, .fed-shell-status:hover { border-color: var(--fed-border-strong); }
.fed-shell-status__dot {
  width: 7px; height: 7px;
  border-radius: 50%;
  background: var(--status-unknown);              /* state set by config/JS */
  flex-shrink: 0;
}
.fed-shell-status[data-state="operational"] .fed-shell-status__dot { background: var(--status-operational); }
.fed-shell-status[data-state="impaired"]    .fed-shell-status__dot { background: var(--status-impaired); }
.fed-shell-status[data-state="failed"]      .fed-shell-status__dot { background: var(--status-failed); }
.fed-shell-status[data-state="operational"] { color: var(--status-operational); }
.fed-shell-status[data-state="impaired"]    { color: var(--status-impaired); }
.fed-shell-status[data-state="failed"]      { color: var(--status-failed); }

/* Optional current-system coordinate — restrained */
.fed-shell-coord {
  font-family: var(--font-fed-system);
  font-size: var(--text-xs);
  letter-spacing: var(--system-letter-spacing);
  color: var(--fed-muted);
  white-space: nowrap;
}

/* ═══ DRAWERS (shared engine chrome) ════════════════════════════════════ */
.fed-drawer {
  position: fixed;
  top: 0; right: 0; bottom: 0;
  z-index: var(--z-drawer);
  width: min(400px, 92vw);
  background: var(--surface-system);
  border-left: 1px solid var(--fed-border-default);
  transform: translateX(100%);
  transition: transform var(--motion-interface) var(--ease-fed);
  display: flex;
  flex-direction: column;
  visibility: hidden;
}
.fed-drawer[data-open="true"] { transform: translateX(0); visibility: visible; }
.fed-drawer__scrim {
  position: fixed; inset: 0;
  z-index: calc(var(--z-drawer) - 1);
  background: color-mix(in srgb, var(--fed-space) 62%, transparent);
  opacity: 0;
  pointer-events: none;
  transition: opacity var(--motion-interface) var(--ease-fed);
}
.fed-drawer__scrim[data-open="true"] { opacity: 1; pointer-events: auto; }
.fed-drawer__head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-3);
  padding: var(--space-4) var(--space-5);
  border-bottom: 1px solid var(--fed-border-soft);
}
.fed-drawer__title {
  font-family: var(--font-fed-display);
  font-weight: 700;
  font-size: var(--text-sm);
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--fed-text-display);
}
.fed-drawer__close {
  min-width: var(--touch-target-min);
  min-height: var(--touch-target-min);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background: transparent;
  border: 1px solid var(--fed-border-default);
  border-radius: var(--radius-xs);
  color: var(--fed-text);
  font-size: var(--text-lg);
  cursor: pointer;
}
.fed-drawer__body { padding: var(--space-5); overflow-y: auto; flex: 1; }
body.fed-scroll-locked { overflow: hidden; }
@media (prefers-reduced-motion: reduce) {
  .fed-drawer, .fed-drawer__scrim { transition: none; }
}

/* System-status drawer rows */
.fed-sysrow {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-3);
  padding: var(--space-3) 0;
  border-bottom: 1px solid var(--fed-border-soft);
}
.fed-sysrow__name {
  font-family: var(--font-fed-interface);
  font-weight: 600;
  font-size: var(--text-sm);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--fed-text);
}
.fed-sysrow__coord {
  display: block;
  font-family: var(--font-fed-system);
  font-size: var(--text-xs);
  letter-spacing: var(--system-letter-spacing);
  color: var(--fed-muted);
}
.fed-drawer__verified {
  margin-top: var(--space-5);
  font-family: var(--font-fed-system);
  font-size: var(--text-xs);
  letter-spacing: var(--system-letter-spacing);
  color: var(--fed-muted);
}

/* Voss placeholder */
.fed-voss-id {
  display: flex;
  align-items: center;
  gap: var(--space-4);
  padding-bottom: var(--space-4);
  border-bottom: 1px solid var(--fed-border-soft);
  margin-bottom: var(--space-4);
}
.fed-voss-id img { width: 52px; height: 52px; border-radius: var(--radius-xs); }
.fed-voss-modes {
  display: flex;
  gap: var(--space-2);
  margin-top: var(--space-4);
}
.fed-voss-modes button {
  flex: 1;
  min-height: var(--touch-target-min);
  font-family: var(--font-fed-system);
  font-size: var(--text-xs);
  letter-spacing: var(--system-letter-spacing);
  text-transform: uppercase;
  background: transparent;
  border: 1px solid var(--fed-border-soft);
  border-radius: var(--radius-xs);
  color: color-mix(in srgb, var(--fed-muted) 60%, transparent);
  cursor: not-allowed;
}

/* ═══ MOBILE / TABLET ═══════════════════════════════════════════════════ */
.fed-shell-bottom { display: none; }
.fed-shell-bar__mobile-status { display: none; }

@media (max-width: 1023px) {
  /* Tablet + mobile: collapse center nav; top bar = identity + status.
     Intentional collapse, not scaled desktop. */
  .fed-shell-nav { display: none; }
  .fed-shell-coord { display: none; }             /* decorative — yields space */
  .fed-shell-bar {
    padding-inline: var(--fed-gutter-tablet);
    gap: var(--space-3);
    justify-content: space-between;
  }
}
@media (max-width: 767px) {
  /* Phones only: Voss moves into MORE. Measured at 768px the bar holds
     identity (~230px) + VOSS (~90px) + STATUS (~170px) within tablet
     gutters without crowding once the coordinate is dropped, so Voss
     stays top-level for all tablet widths. */
  .fed-shell-voss { display: none; }
}
@media (max-width: 639px) {
  .fed-shell-bar { padding-inline: var(--fed-gutter-mobile); }
  .fed-shell-brand__primary { font-size: var(--text-xs); letter-spacing: 0.10em; }
}

@media (max-width: 1023px) {
  /* Bottom navigation — readable labels, never icons alone */
  .fed-shell-bottom {
    display: flex;
    position: fixed;
    left: 0; right: 0; bottom: 0;
    z-index: var(--z-nav);
    background: color-mix(in srgb, var(--fed-space) 94%, transparent);
    backdrop-filter: blur(14px);
    border-top: 1px solid var(--fed-border-soft);
    padding-bottom: env(safe-area-inset-bottom, 0px);
  }
  .fed-shell-bottom__item {
    flex: 1;
    display: inline-flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 2px;
    min-height: 56px;                              /* ≥44px target */
    font-family: var(--font-fed-interface);
    font-weight: 600;
    font-size: var(--text-xs);
    letter-spacing: 0.08em;
    text-transform: uppercase;
    text-decoration: none;
    background: none;
    border: none;
    color: var(--fed-muted);
    cursor: pointer;
  }
  .fed-shell-bottom__item[aria-current="page"] { color: var(--fed-command); }
  .fed-shell-bottom__item[aria-current="page"]::before {
    content: "";
    width: 20px; height: 2px;
    background: var(--fed-command);
  }
  body.fed-has-bottom-nav { padding-bottom: calc(56px + env(safe-area-inset-bottom, 0px)); }
}

/* MORE sheet rows */
.fed-more-list { display: grid; gap: var(--space-1); }
.fed-more-list a,
.fed-more-list .fed-more-disabled {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-3);
  min-height: var(--touch-target-min);
  padding: var(--space-3) var(--space-2);
  font-family: var(--font-fed-interface);
  font-weight: 600;
  font-size: var(--text-base);
  letter-spacing: 0.06em;
  text-transform: uppercase;
  text-decoration: none;
  color: var(--fed-text);
  border-bottom: 1px solid var(--fed-border-soft);
}
.fed-more-disabled { color: color-mix(in srgb, var(--fed-muted) 60%, transparent); }
.fed-more-disabled .fed-shell-nav__flag { color: var(--fed-warning); }

/* ═══ SHARED FOOTER ═════════════════════════════════════════════════════ */
.fed-shell-footer {
  margin-top: var(--space-9);
  border-top: 1px solid var(--fed-border-soft);
  background: var(--surface-space);
  padding: var(--space-7) 0 var(--space-6);
}
.fed-shell-footer__grid {
  display: grid;
  grid-template-columns: 1.4fr repeat(3, 1fr);
  gap: var(--space-6);
}
@media (max-width: 1023px) { .fed-shell-footer__grid { grid-template-columns: 1fr 1fr; } }
@media (max-width: 639px)  { .fed-shell-footer__grid { grid-template-columns: 1fr; } }
.fed-shell-footer__brand { display: flex; align-items: flex-start; gap: var(--space-3); }
.fed-shell-footer__brand img { width: 44px; height: 44px; }
.fed-shell-footer__desc {
  font-family: var(--font-fed-body);
  font-size: var(--text-sm);
  line-height: var(--line-body);
  color: var(--fed-muted);
  max-width: 34ch;
  margin-top: var(--space-2);
}
.fed-shell-footer__col h3 {
  font-family: var(--font-fed-system);
  font-size: var(--text-xs);
  letter-spacing: var(--system-letter-spacing-wide);
  text-transform: uppercase;
  color: var(--fed-muted);
  margin-bottom: var(--space-3);
}
.fed-shell-footer__col a {
  display: block;
  padding-block: var(--space-2);   /* comfortable targets */
  font-family: var(--font-fed-interface);
  font-weight: 600;
  font-size: var(--text-sm);
  letter-spacing: 0.05em;
  color: var(--fed-text);
  text-decoration: none;
}
.fed-shell-footer__col a:hover { color: var(--fed-command); }
.fed-shell-footer__legal {
  margin-top: var(--space-6);
  padding-top: var(--space-4);
  border-top: 1px solid var(--fed-border-soft);
  font-family: var(--font-fed-system);
  font-size: var(--text-xs);
  letter-spacing: var(--system-letter-spacing);
  color: var(--fed-muted);
  display: flex;
  justify-content: space-between;
  gap: var(--space-3);
  flex-wrap: wrap;
}