/* ========================================
   Site Navigation — "Tube Glow" faceplate
   A 78px receiver front panel: brushed metal,
   amber phosphor LEDs, recessed plates.
   ======================================== */

.site-nav {
  position: relative;
  z-index: 3;
  display: flex;
  align-items: center;
  gap: 16px;
  height: 78px;
  padding: 0 22px;
  font-family: var(--font-mono);
  background-image: var(--brush), var(--metal);
  box-shadow:
    inset 0 1px 0 rgba(255, 255, 255, 0.07),
    inset 0 -1px 0 rgba(0, 0, 0, 0.7),
    0 2px 6px rgba(0, 0, 0, 0.5);
  border-bottom: 1px solid rgba(224, 162, 60, 0.18);
}

/* --- Brand badge: recessed plate + power LED + wordmark --- */

.site-nav__brand {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 10px 16px 10px 13px;
  border-radius: var(--radius-control);
  background: var(--metal-badge);
  box-shadow:
    inset 0 1px 3px rgba(0, 0, 0, 0.85),
    0 1px 0 rgba(255, 255, 255, 0.04);
  border: 1px solid #000;
  flex-shrink: 0;
  text-decoration: none;
}

.site-nav__brand:hover {
  text-decoration: none;
}

.site-nav__power {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--amber);
  box-shadow: 0 0 10px 1px rgba(224, 162, 60, 0.85);
  flex-shrink: 0;
}

.site-nav__wordmark {
  display: block;
}

.site-nav__wordmark-line1 {
  display: block;
  font-size: 10.5px;
  letter-spacing: 2.5px;
  color: var(--ink-80);
  text-transform: uppercase;
  text-shadow: 0 1px 0 rgba(0, 0, 0, 0.9);
  line-height: 1;
  white-space: nowrap;
}

.site-nav__wordmark-line2 {
  display: block;
  font-size: 11px;
  letter-spacing: 5px;
  color: var(--amber);
  text-transform: uppercase;
  text-shadow: 0 0 9px rgba(224, 162, 60, 0.45);
  line-height: 1;
  margin-top: 4px;
}

/* --- Selector buttons --- */

.site-nav__links {
  flex: 1;
  display: flex;
  align-items: center;
  gap: 7px;
  justify-content: center;
}

.site-nav__links form {
  margin: 0;
  padding: 0;
  display: flex;
  align-items: center;
}

.site-nav__link {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 7px;
  padding: 9px 13px 8px;
  border-radius: 5px;
  min-width: 60px;
  background: linear-gradient(180deg, #16130e, #0d0a07);
  border: 1px solid rgba(0, 0, 0, 0.7);
  box-shadow:
    0 1px 2px rgba(0, 0, 0, 0.6),
    inset 0 1px 0 rgba(255, 255, 255, 0.04);
  text-decoration: none;
  transition: box-shadow var(--transition-fast);
}

.site-nav__led {
  width: 16px;
  height: 3px;
  border-radius: 2px;
  background: var(--seg-off);
  box-shadow: inset 0 1px 1px rgba(0, 0, 0, 0.85);
  transition:
    background var(--transition-fast),
    box-shadow var(--transition-fast);
}

.site-nav__label {
  font-size: 9px;
  letter-spacing: 1.5px;
  text-transform: uppercase;
  color: var(--ink-30);
  text-shadow: 0 1px 0 rgba(255, 255, 255, 0.05);
  transition:
    color var(--transition-fast),
    text-shadow var(--transition-fast);
}

.site-nav__link:hover {
  text-decoration: none;
  box-shadow:
    0 0 12px -4px rgba(224, 162, 60, 0.4),
    inset 0 1px 0 rgba(255, 255, 255, 0.04);
}

.site-nav__link:hover .site-nav__led {
  background: var(--amber-faint);
}

.site-nav__link--active {
  background: linear-gradient(180deg, #2a1d0d, #180f07);
  border: 1px solid rgba(224, 162, 60, 0.5);
  box-shadow:
    0 0 16px -2px rgba(224, 162, 60, 0.45),
    inset 0 1px 0 rgba(224, 162, 60, 0.18);
}

.site-nav__link--active .site-nav__led {
  background: var(--amber);
  box-shadow: 0 0 8px 1px rgba(224, 162, 60, 0.85);
}

.site-nav__link--active .site-nav__label {
  color: #f0d9a8;
  text-shadow: 0 0 8px rgba(224, 162, 60, 0.6);
}

/* --- VOL / TONE knobs (interactive) --- */

.site-nav__knobs {
  display: flex;
  align-items: center;
  gap: 13px;
  flex-shrink: 0;
}

.site-nav__knob {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 4px;
  cursor: ns-resize;
  user-select: none;
  outline: none;
}

.site-nav__knob:focus-visible .site-nav__knob-dial {
  box-shadow:
    inset 0 1px 1px rgba(255, 255, 255, 0.14),
    inset 0 -2px 3px rgba(0, 0, 0, 0.7),
    0 0 0 2px rgba(224, 162, 60, 0.6);
}

.site-nav__knob-dial {
  position: relative;
  isolation: isolate; /* scopes the arc's z-index:-1 to the dial */
  width: 32px;
  height: 32px;
  border-radius: 50%;
  background: radial-gradient(circle at 35% 28%, #3a342a, #0f0c08 72%);
  box-shadow:
    inset 0 1px 1px rgba(255, 255, 255, 0.14),
    inset 0 -2px 3px rgba(0, 0, 0, 0.7),
    0 2px 3px rgba(0, 0, 0, 0.6);
}

/* Per-kind glow: the arc and the indicator both read --knob-glow. */
.site-nav__knob-dial--vol {
  --knob-glow: var(--amber);
  --knob-glow-soft: rgba(224, 162, 60, 0.55);
}

.site-nav__knob-dial--tone {
  --knob-glow: var(--tone-glow);
  --knob-glow-soft: var(--tone-glow-soft);
}

/* Value-fill glow arc: a conic fill masked into a thin ring hugging the rim,
   sitting behind the cap. --knob-frac (0..1) is set by knob_controller.js and
   fills clockwise from 225deg (min, lower-left) across the 270deg track. */
.site-nav__knob-arc {
  position: absolute;
  inset: -5px;
  z-index: -1;
  border-radius: 50%;
  pointer-events: none;
  background: conic-gradient(
    from 225deg,
    var(--knob-glow) calc(var(--knob-frac, 0) * 270deg),
    transparent 0
  );
  /* ring band hugging the cap rim (cap radius = 16px within this 42px box ≈ 76%) */
  -webkit-mask: radial-gradient(circle, transparent 66%, #000 74%, #000 92%, transparent 100%);
  mask: radial-gradient(circle, transparent 66%, #000 74%, #000 92%, transparent 100%);
}

.site-nav__knob-arc::after {
  content: "";
  position: absolute;
  inset: 0;
  border-radius: 50%;
  background: inherit;
  -webkit-mask: inherit;
  mask: inherit;
  filter: blur(3px);
  opacity: 0.85;
}

.site-nav__knob-indicator {
  position: absolute;
  top: 3px;
  left: 50%;
  width: 2px;
  height: 9px;
  border-radius: 1px;
  transform-origin: 50% 13px;
  transform: translateX(-50%) rotate(var(--knob-angle, 0deg));
  background: var(--knob-glow);
  box-shadow: 0 0 5px var(--knob-glow-soft);
}

.site-nav__knob-caption {
  font-size: 7.5px;
  letter-spacing: 1px;
  color: var(--ink-30);
  text-transform: uppercase;
}

/* --- Account cluster: invite counter + initials + sign out --- */

.site-nav__account {
  display: flex;
  align-items: center;
  gap: 11px;
  padding: 8px 11px;
  border-radius: var(--radius-control);
  background: var(--metal-badge);
  box-shadow: inset 0 1px 3px rgba(0, 0, 0, 0.85);
  border: 1px solid #000;
  flex-shrink: 0;
}

.site-nav__invites {
  display: flex;
  flex-direction: column;
  gap: 4px;
  align-items: flex-end;
}

.site-nav__invites-label {
  font-size: 7px;
  letter-spacing: 1.5px;
  color: var(--ink-20);
  text-transform: uppercase;
}

.site-nav__invites-digits {
  display: flex;
  gap: 2px;
}

.site-nav__digit {
  font-size: 11px;
  color: var(--ink-20);
  background: var(--inset);
  padding: 2px 3px;
  border-radius: 2px;
  box-shadow: inset 0 0 4px rgba(0, 0, 0, 0.9);
}

.site-nav__digit--active {
  color: var(--amber);
  text-shadow: 0 0 7px rgba(224, 162, 60, 0.6);
}

.site-nav__initials {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 30px;
  height: 30px;
  border-radius: 5px;
  background: linear-gradient(180deg, #1a1610, #100d09);
  border: 1px solid rgba(224, 162, 60, 0.4);
  box-shadow: 0 0 10px -3px rgba(224, 162, 60, 0.5);
  font-size: 9px;
  letter-spacing: 0.5px;
  color: var(--amber);
  text-decoration: none;
  text-transform: uppercase;
  transition: box-shadow var(--transition-fast);
}

.site-nav__initials:hover {
  text-decoration: none;
  box-shadow: 0 0 14px -2px rgba(224, 162, 60, 0.7);
}

.site-nav__signout {
  flex-direction: row;
  gap: 0;
  min-width: 0;
  padding: 5px 8px;
  cursor: pointer;
  font-family: var(--font-mono);
  font-size: 7.5px;
  letter-spacing: 1px;
  text-transform: uppercase;
  color: var(--ink-40);
}

.site-nav__signout:hover {
  color: var(--amber);
}