.hdr {
  height: var(--hdr-h);
  background: var(--surface);
  border-bottom: 1px solid var(--border);
  display: flex;
  align-items: center;
  padding: 0 20px;
  gap: 12px;
  flex-shrink: 0;
  z-index: 100;
  position: relative;
  transition: background .2s, border-color .2s;
}

.hdr-logo {
  font-size: 15px;
  font-weight: 700;
  letter-spacing: .04em;
  cursor: default;
  user-select: none;
}
.hdr-pipe  { width: 1px; height: 18px; background: var(--border); }
.hdr-sub   { font-family: var(--mono); font-size: 10px; color: var(--muted); text-transform: uppercase; letter-spacing: .1em; }
.hdr-right { margin-left: auto; display: flex; align-items: center; gap: 10px; }

/* Status indicator */
.s-dot { width: 7px; height: 7px; border-radius: 50%; background: var(--border); transition: background .2s; flex-shrink: 0; }
.s-dot.play { background: #22c55e; animation: blink 1.2s ease infinite; }
.s-dot.rec  { background: #ef4444; animation: blink .7s ease infinite; }
@keyframes blink { 0%, 100% { opacity: 1; } 50% { opacity: .25; } }
.s-lbl { font-family: var(--mono); font-size: 10px; color: var(--muted); text-transform: uppercase; letter-spacing: .08em; min-width: 52px; }

/* Icon buttons (theme toggle + mobile menu) */
.icon-btn {
  width: 30px;
  height: 30px;
  border: 1px solid var(--border);
  border-radius: var(--r);
  background: var(--bg);
  color: var(--text);
  font-size: 14px;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: background .1s, border-color .1s;
  flex-shrink: 0;
  -webkit-tap-highlight-color: transparent;
}
.icon-btn:hover { background: var(--border); }

/* Mobile hamburger — hidden on desktop */
.menu-btn { display: none; }

@media (max-width: 767px) {
  .menu-btn  { display: flex; }
  .hdr-pipe,
  .hdr-sub   { display: none; }
  .hdr       { padding: 0 14px; gap: 10px; }
  .s-lbl     { display: none; }
}