.app-nav {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 100;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 2rem;
  height: 56px;
  background: rgba(12, 14, 15, 0.95);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
}

.nav-logo {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 14px;
  font-weight: 600;
  color: var(--text);
  text-decoration: none;
}

.nav-logo-mark {
  width: 24px; height: 24px;
  background: var(--accent);
  border-radius: 4px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 12px;
  font-weight: 600;
  color: white;
  flex-shrink: 0;
}

.nav-right {
  display: flex;
  align-items: center;
  gap: 1.5rem;
}

.nav-account {
  font-size: 12px;
  color: var(--muted);
  text-decoration: none;
  transition: color 0.15s;
}
.nav-account:hover { color: var(--text); }

.nav-sign-out {
  font-size: 12px;
  color: var(--text);
  background: none;
  border: 1px solid var(--border2);
  border-radius: 4px;
  padding: 4px 12px;
  cursor: pointer;
  transition: color 0.15s, border-color 0.15s;
}
.nav-sign-out:hover { color: var(--accent); border-color: var(--accent); }

/* button_to generates a form; reset it */
.nav-right form { display: inline; margin: 0; }

/* ─── Global flash ─── */

.flash-container {
  position: fixed;
  top: 68px;
  left: 50%;
  transform: translateX(-50%);
  z-index: 200;
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  pointer-events: none;
}

.flash {
  font-size: 13px;
  padding: 0.6rem 1.1rem;
  border-radius: 5px;
  pointer-events: auto;
  white-space: nowrap;
}

.flash--notice {
  background: var(--green-dim);
  border: 1px solid rgba(61,186,116,0.3);
  color: var(--green);
}

.flash--alert {
  background: var(--red-dim);
  border: 1px solid rgba(224,92,58,0.3);
  color: var(--accent);
}