/* ═══════════════════════════════════════════════════════════════════
   CAZ Command Center — Sidebar Navigation (nav.css)
   Persistent left sidebar with collapse, theme toggle, page nav.
   ═══════════════════════════════════════════════════════════════════ */

.sidebar {
  position: fixed;
  left: 0; top: 0; bottom: 0;
  width: var(--nav-width);
  background: var(--navy-2);
  border-right: 1px solid var(--border);
  display: flex;
  flex-direction: column;
  z-index: 100;
  transition: width var(--nav-transition);
  overflow: hidden;
}

/* ── Collapsed state ──────────────────────────────────────────────── */
.sidebar.collapsed { width: var(--nav-width-collapsed); }
.sidebar.collapsed .sidebar-nav span { opacity: 0; width: 0; overflow: hidden; }
.sidebar.collapsed .sidebar-footer span { opacity: 0; width: 0; overflow: hidden; }
.sidebar.collapsed .sidebar-collapse-btn svg { transform: rotate(180deg); }

/* ── Logo area ────────────────────────────────────────────────────── */
.sidebar-logo {
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 18px 14px 14px;
  border-bottom: 1px solid var(--border);
  flex-shrink: 0;
  overflow: hidden;
}

.sidebar-logo-img {
  height: 36px;
  width: auto;
  object-fit: contain;
  transition: filter 0.3s ease, opacity 0.3s ease, height 0.3s ease;
}

/* Dark mode: invert the dark logo to white */
[data-theme="dark"] .sidebar-logo-img,
:root:not([data-theme]) .sidebar-logo-img {
  filter: invert(1) brightness(2);
}

/* Light mode: show original dark logo */
[data-theme="light"] .sidebar-logo-img {
  filter: none;
}

/* Collapsed sidebar: shrink logo */
.sidebar.collapsed .sidebar-logo-img {
  height: 22px;
}


/* ── Navigation list ──────────────────────────────────────────────── */
.sidebar-nav {
  list-style: none;
  padding: 10px 8px;
  flex: 1;
  overflow-y: auto;
  display: flex;
  flex-direction: column;
  gap: 2px;
}

.sidebar-nav li a {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 10px 14px;
  border-radius: var(--radius-md);
  text-decoration: none;
  color: var(--text-secondary);
  font-size: 13px;
  font-weight: 500;
  transition: all var(--transition-fast);
  white-space: nowrap;
  border-left: 3px solid transparent;
}

.sidebar-nav li a:hover {
  color: var(--text-primary);
  background: rgba(255, 255, 255, 0.04);
}

.sidebar-nav li a svg {
  flex-shrink: 0;
  opacity: 0.7;
  transition: opacity var(--transition-fast);
}

.sidebar-nav li a:hover svg { opacity: 1; }

.sidebar-nav li a span {
  transition: opacity var(--nav-transition), width var(--nav-transition);
}

/* Active state — gold left border + highlighted */
.sidebar-nav li.active a {
  border-left-color: var(--gold);
  color: var(--gold);
  background: rgba(255, 200, 87, 0.08);
}

.sidebar-nav li.active a svg {
  opacity: 1;
  color: var(--gold);
}

/* ── Footer area ──────────────────────────────────────────────────── */
.sidebar-footer {
  border-top: 1px solid var(--border);
  padding: 8px;
  display: flex;
  flex-direction: column;
  gap: 2px;
  flex-shrink: 0;
}

.sidebar-footer-link {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 10px 14px;
  border-radius: var(--radius-md);
  text-decoration: none;
  color: var(--text-secondary);
  font-size: 13px;
  font-weight: 500;
  transition: all var(--transition-fast);
  white-space: nowrap;
  background: none;
}
button.sidebar-footer-link,
button.theme-toggle {
  background: none;
  color: var(--text-secondary);
  border: none;
  cursor: pointer;
  width: 100%;
  text-align: left;
  font-family: var(--font-sans);
}
.sidebar-footer-link:hover {
  color: var(--text-primary);
  background: rgba(255, 255, 255, 0.04);
}
.sidebar-footer-link svg { flex-shrink: 0; opacity: 0.7; }
.sidebar-footer-link:hover svg { opacity: 1; }

/* Theme toggle button */
.theme-toggle {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 10px 14px;
  border-radius: var(--radius-md);
  border: none;
  background: none;
  cursor: pointer;
  color: var(--text-secondary);
  font-size: 13px;
  font-weight: 500;
  font-family: var(--font-sans);
  transition: all var(--transition-fast);
  white-space: nowrap;
  width: 100%;
  text-align: left;
}
.theme-toggle:hover {
  color: var(--text-primary);
  background: rgba(255, 255, 255, 0.04);
}
.theme-toggle svg { flex-shrink: 0; opacity: 0.7; }
.theme-toggle:hover svg { opacity: 1; }
.theme-toggle span {
  transition: opacity var(--nav-transition), width var(--nav-transition);
}

/* Sun/moon visibility */
[data-theme="dark"] .icon-sun  { display: none; }
[data-theme="dark"] .icon-moon { display: block; }
[data-theme="light"] .icon-sun  { display: block; }
[data-theme="light"] .icon-moon { display: none; }

/* Collapse button */
.sidebar-collapse-btn {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 10px 14px;
  border-radius: var(--radius-md);
  border: none;
  background: none;
  cursor: pointer;
  color: var(--text-muted);
  font-size: 12px;
  font-weight: 500;
  font-family: var(--font-sans);
  transition: all var(--transition-fast);
  white-space: nowrap;
  width: 100%;
  text-align: left;
}
.sidebar-collapse-btn:hover {
  color: var(--text-secondary);
  background: rgba(255, 255, 255, 0.04);
}
.sidebar-collapse-btn svg {
  flex-shrink: 0;
  transition: transform var(--nav-transition);
}
.sidebar-collapse-btn span {
  transition: opacity var(--nav-transition), width var(--nav-transition);
}

/* ── Responsive: mobile ───────────────────────────────────────────── */
@media (max-width: 768px) {
  .sidebar {
    width: var(--nav-width-collapsed);
  }
  .sidebar .sidebar-logo-img { height: 22px; }
  .sidebar .sidebar-nav span,
  .sidebar .sidebar-footer span { opacity: 0; width: 0; }
  .sidebar .sidebar-collapse-btn { display: none; }
}