/* Layout shell */
.app {
  display: grid;
  grid-template-columns: var(--sidebar-w) minmax(0, 1fr) var(--right-w);
  max-width: var(--max-w);
  margin: 0 auto;
  min-height: 100vh;
}

/* Sidebar */
.sidebar {
  position: sticky; top: 0;
  height: 100vh;
  border-right: 1px solid var(--border);
  padding: 28px 22px;
  display: flex;
  flex-direction: column;
  background: var(--bg);
  z-index: 20;
}
.brand {
  display: flex; align-items: center; gap: 12px;
  margin-bottom: 28px;
  text-decoration: none;
  color: inherit;
}
.avatar {
  width: 40px; height: 40px;
  border-radius: 50%;
  background: var(--ink);
  color: var(--bg);
  display: grid; place-items: center;
  font-family: var(--font-mono);
  font-weight: 600;
  font-size: 15px;
  flex-shrink: 0;
  border: 1px solid var(--rule);
}
.brand-text { line-height: 1.2; }
.brand-title { font-weight: 600; font-size: 15px; color: var(--ink); }
.brand-tagline {
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--muted);
  margin-top: 3px;
  letter-spacing: -0.01em;
}

.nav { display: flex; flex-direction: column; gap: 2px; }
.nav-item {
  display: flex; align-items: center; gap: 12px;
  padding: 8px 10px;
  border-radius: var(--radius);
  color: var(--ink-soft);
  font-size: 14px;
  cursor: pointer;
  transition: background 0.12s;
  user-select: none;
}
.nav-item:hover { background: var(--bg-soft); color: var(--ink); }
.nav-item.active {
  background: var(--ink);
  color: var(--bg);
}
.nav-item.active .nav-icon { color: var(--bg); }
.nav-icon {
  width: 16px; height: 16px;
  color: var(--muted);
  flex-shrink: 0;
}
.nav-count {
  margin-left: auto;
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--muted-2);
}
.nav-item.active .nav-count { color: var(--bg); opacity: 0.6; }

.sidebar-footer {
  margin-top: auto;
  padding-top: 20px;
  border-top: 1px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
}
.theme-toggle {
  display: inline-flex; align-items: center; gap: 6px;
  padding: 6px 10px;
  background: var(--bg-soft);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--muted);
  cursor: pointer;
  transition: all 0.12s;
}
.theme-toggle:hover { color: var(--ink); border-color: var(--rule); }
.sidebar-footer-right { display: flex; align-items: center; gap: 4px; }
.lang-toggle {
  display: inline-flex; align-items: center; justify-content: center;
  padding: 4px 8px;
  background: var(--bg-soft);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  font-family: var(--font-mono);
  font-size: 10px;
  color: var(--muted);
  text-decoration: none;
  transition: all 0.12s;
  line-height: 1;
}
.lang-toggle:hover { color: var(--ink); border-color: var(--rule); }
.social-icons { display: flex; gap: 2px; }
.social-icon {
  width: 28px; height: 28px;
  display: grid; place-items: center;
  color: var(--muted);
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: all 0.12s;
}
.social-icon:hover { color: var(--ink); background: var(--bg-soft); }
.social-icon svg { width: 14px; height: 14px; }

/* Main */
.main {
  min-width: 0;
  padding: 0 var(--gutter);
  border-right: 1px solid var(--border);
}

/* Top bar */
.topbar {
  position: sticky; top: 0;
  z-index: 10;
  background: color-mix(in oklab, var(--bg) 92%, transparent);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--border-soft);
  padding: 14px 0;
  display: flex;
  align-items: center;
  gap: 16px;
  margin: 0 calc(-1 * var(--gutter)) 0;
  padding-left: var(--gutter);
  padding-right: var(--gutter);
}
.mobile-toggle {
  display: none;
  width: 32px; height: 32px;
  place-items: center;
  background: transparent;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  cursor: pointer;
  color: var(--ink);
}
.breadcrumb {
  display: flex; align-items: center;
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--muted);
  gap: 6px;
  min-width: 0;
  flex: 1;
  overflow: hidden;
}
.breadcrumb .sep { color: var(--faint); }
.breadcrumb a { color: var(--muted); }
.breadcrumb a:hover { color: var(--ink); }
.breadcrumb .crumb-current {
  color: var(--ink);
  text-overflow: ellipsis;
  overflow: hidden;
  white-space: nowrap;
}

.search-wrap { position: relative; flex-shrink: 0; }
.search-box {
  display: flex; align-items: center;
  gap: 8px;
  background: var(--bg-soft);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 6px 10px;
  width: 280px;
  cursor: text;
  transition: all 0.12s;
}
.search-box:hover, .search-box.active {
  border-color: var(--rule);
  background: var(--surface);
}
.search-box input {
  border: none;
  background: transparent;
  outline: none;
  flex: 1;
  font-family: var(--font-sans);
  font-size: 13px;
  color: var(--ink);
  min-width: 0;
}
.search-box input::placeholder { color: var(--muted-2); }
.search-kbd {
  font-family: var(--font-mono);
  font-size: 10px;
  padding: 2px 5px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 3px;
  color: var(--muted-2);
}

/* Right panel */
.rightpanel {
  padding: 28px 22px;
  position: sticky;
  top: 0;
  height: 100vh;
  overflow-y: auto;
  background: var(--bg);
}
.rp-section { margin-bottom: 32px; }
.rp-title {
  font-family: var(--font-mono);
  font-size: 11px;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--muted);
  margin: 0 0 14px;
  display: flex; align-items: center; gap: 8px;
}
.rp-title::before {
  content: '';
  display: inline-block;
  width: 6px; height: 6px;
  background: var(--ink);
  border-radius: 50%;
}
.rp-list { list-style: none; padding: 0; margin: 0; display: flex; flex-direction: column; gap: 10px; }
.rp-list a {
  display: block;
  font-size: 13px;
  line-height: 1.45;
  color: var(--ink-soft);
  padding: 2px 0;
  border-left: 2px solid transparent;
  padding-left: 10px;
  margin-left: -10px;
  transition: all 0.12s;
}
.rp-list a:hover {
  color: var(--ink);
  border-left-color: var(--ink);
}
.rp-list .rp-date {
  display: block;
  font-family: var(--font-mono);
  font-size: 10px;
  color: var(--muted-2);
  margin-top: 2px;
}

.tag-cloud { display: flex; flex-wrap: wrap; gap: 6px; }
.tag-pill {
  display: inline-flex; align-items: center; gap: 4px;
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--ink-soft);
  background: var(--bg-soft);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 3px 7px;
  cursor: pointer;
  transition: all 0.12s;
}
.tag-pill:hover { border-color: var(--rule); color: var(--ink); }
.tag-pill .tag-count { color: var(--muted-2); font-size: 10px; }

.sidebar-scrim {
  position: fixed; inset: 0;
  background: rgba(0,0,0,0.3);
  z-index: 19;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.2s;
  display: none;
}
.sidebar-scrim.open { opacity: 1; pointer-events: auto; }

/* Responsive */
@media (max-width: 1100px) {
  .app { grid-template-columns: var(--sidebar-w) minmax(0, 1fr); }
  .rightpanel { display: none; }
}
@media (max-width: 760px) {
  .app { grid-template-columns: 1fr; }
  .sidebar {
    position: fixed;
    left: 0; top: 0;
    height: 100vh;
    width: 280px;
    transform: translateX(-100%);
    transition: transform 0.24s ease;
    border-right: 1px solid var(--border);
    box-shadow: var(--shadow-lg);
  }
  .sidebar.open { transform: translateX(0); }
  .sidebar-scrim {
    display: block;
  }
  .sidebar-scrim.open { opacity: 1; pointer-events: auto; }
  .mobile-toggle { display: grid; }
  .main { border-right: none; }
  .search-box { width: auto; flex: 1; }
}