/* ─── Pied Piper channel sidebar ─────────────────────────────────────────── */

/* Sidebar is injected into #sidebar-mount. Pages that include it get
   a left-offset layout. The sidebar itself is fixed on desktop,
   a drawer on mobile. */

:root {
  --sb-width: 220px;
  --sb-bg: var(--bg2, #111111);
  --sb-fg: var(--muted, rgba(255,255,255,0.52));
  --sb-active-fg: var(--fg, #f2f2f2);
  --sb-active-bg: var(--bg3, #181818);
  --sb-border: var(--line, rgba(255,255,255,0.10));
  --sb-hash: var(--muted2, rgba(255,255,255,0.30));
  --sb-label: rgba(255,255,255,0.28);
  --sb-section-gap: 1.4rem;
  --sb-item-h: 30px;
  --sb-font: ui-monospace, "SF Mono", Menlo, Consolas, monospace;
}

/* Light theme overrides */
[data-theme="light"] {
  --sb-bg: #f7f7f7;
  --sb-fg: rgba(0,0,0,0.52);
  --sb-active-fg: #000000;
  --sb-active-bg: #efefef;
  --sb-border: rgba(0,0,0,0.10);
  --sb-hash: rgba(0,0,0,0.30);
  --sb-label: rgba(0,0,0,0.30);
}
@media (prefers-color-scheme: light) {
  :root:not([data-theme]) {
    --sb-bg: #f7f7f7;
    --sb-fg: rgba(0,0,0,0.52);
    --sb-active-fg: #000000;
    --sb-active-bg: #efefef;
    --sb-border: rgba(0,0,0,0.10);
    --sb-hash: rgba(0,0,0,0.30);
    --sb-label: rgba(0,0,0,0.30);
  }
}
[data-theme="sepia"] {
  --sb-bg: #ede4cc;
  --sb-fg: rgba(58,47,29,0.55);
  --sb-active-fg: #3a2f1d;
  --sb-active-bg: #e3d8bc;
  --sb-border: rgba(58,47,29,0.18);
  --sb-hash: rgba(58,47,29,0.35);
  --sb-label: rgba(58,47,29,0.35);
}
[data-theme="terminal"] {
  --sb-bg: #0a0a0a;
  --sb-fg: rgba(0,255,65,0.55);
  --sb-active-fg: #00ff41;
  --sb-active-bg: #111111;
  --sb-border: rgba(0,255,65,0.22);
  --sb-hash: rgba(0,255,65,0.35);
  --sb-label: rgba(0,255,65,0.35);
}
[data-theme="mandala"] {
  --sb-bg: #f0e7cc;
  --sb-fg: rgba(7,54,66,0.55);
  --sb-active-fg: #073642;
  --sb-active-bg: #e6dcbd;
  --sb-border: rgba(7,54,66,0.15);
  --sb-hash: rgba(7,54,66,0.35);
  --sb-label: rgba(7,54,66,0.35);
}

/* ─── Hamburger button (mobile only) ──────────────────────────────────────── */
#pp-hamburger {
  display: none;
  position: fixed;
  top: 14px;
  left: 14px;
  z-index: 200;
  background: var(--sb-active-bg);
  border: 1px solid var(--sb-border);
  border-radius: 6px;
  width: 36px;
  height: 36px;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  padding: 0;
  color: var(--sb-active-fg);
  font-size: 18px;
  line-height: 1;
}
#pp-hamburger:focus-visible { outline: 2px solid var(--sb-active-fg); outline-offset: 2px; }

/* ─── Sidebar container ────────────────────────────────────────────────────── */
#pp-sidebar {
  position: fixed;
  top: 0;
  left: 0;
  bottom: 0;
  width: var(--sb-width);
  background: var(--sb-bg);
  border-right: 1px solid var(--sb-border);
  overflow-y: auto;
  overflow-x: hidden;
  z-index: 100;
  padding: 0 0 2rem;
  display: flex;
  flex-direction: column;
  -webkit-overflow-scrolling: touch;
  scrollbar-width: thin;
  scrollbar-color: var(--sb-border) transparent;
}
#pp-sidebar::-webkit-scrollbar { width: 4px; }
#pp-sidebar::-webkit-scrollbar-track { background: transparent; }
#pp-sidebar::-webkit-scrollbar-thumb { background: var(--sb-border); border-radius: 2px; }

/* ─── Wordmark ─────────────────────────────────────────────────────────────── */
.sb-wordmark {
  padding: 1.2rem 1rem 1rem;
  border-bottom: 1px solid var(--sb-border);
  margin-bottom: 0.6rem;
  flex-shrink: 0;
}
.sb-brand {
  font-family: ui-serif, Georgia, "Iowan Old Style", "Apple Garamond", serif;
  font-size: 0.92rem;
  font-weight: 500;
  color: var(--sb-active-fg);
  text-decoration: none;
  letter-spacing: -0.01em;
}
.sb-brand:hover { opacity: 0.8; }

/* ─── Section labels ───────────────────────────────────────────────────────── */
.sb-section-label {
  font-family: var(--sb-font);
  font-size: 0.67rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--sb-label);
  padding: 0 1rem 0.3rem;
  margin-top: var(--sb-section-gap);
  flex-shrink: 0;
}

/* ─── Channel items ────────────────────────────────────────────────────────── */
.sb-item {
  display: flex;
  align-items: center;
  gap: 0.18em;
  height: var(--sb-item-h);
  padding: 0 1rem;
  font-family: var(--sb-font);
  font-size: 0.82rem;
  color: var(--sb-fg);
  text-decoration: none;
  border-left: 2px solid transparent;
  transition: color 0.12s, background 0.12s;
  flex-shrink: 0;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}
.sb-item:hover {
  color: var(--sb-active-fg);
  background: var(--sb-active-bg);
}
.sb-item.active {
  color: var(--sb-active-fg);
  background: var(--sb-active-bg);
  border-left-color: var(--sb-active-fg);
  font-weight: 500;
}
.sb-hash {
  color: var(--sb-hash);
  flex-shrink: 0;
  margin-right: 0.1em;
}
.sb-item.active .sb-hash {
  color: var(--sb-active-fg);
  opacity: 0.5;
}
.sb-arrow {
  font-size: 0.7em;
  margin-left: 0.2em;
  opacity: 0.5;
  flex-shrink: 0;
}

/* ─── Overlay (mobile drawer backdrop) ────────────────────────────────────── */
#pp-sb-overlay {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.5);
  z-index: 99;
}
#pp-sb-overlay.visible { display: block; }

/* ─── Page body offset on desktop ─────────────────────────────────────────── */
body.pp-has-sidebar {
  padding-left: var(--sb-width);
}

/* ─── Mobile ───────────────────────────────────────────────────────────────── */
@media (max-width: 768px) {
  body.pp-has-sidebar {
    padding-left: 0;
  }
  #pp-hamburger {
    display: flex;
  }
  #pp-sidebar {
    transform: translateX(-100%);
    transition: transform 0.22s ease;
    box-shadow: 4px 0 20px rgba(0,0,0,0.3);
  }
  #pp-sidebar.open {
    transform: translateX(0);
  }
}