/* ============================================================
   Aproject — components + main area + variants
   ============================================================ */

/* ---------- Main area (chat placeholder) ---------- */
.main {
  flex: 1; min-width: 0;
  display: flex; flex-direction: column;
  background: var(--background);
  position: relative;
}
.main-top {
  height: 56px; flex: 0 0 56px;
  display: flex; align-items: center; gap: 12px;
  padding: 0 18px;
  border-bottom: 1px solid var(--border);
}
.main-title { font-size: 14px; font-weight: 600; letter-spacing: -.01em; display: flex; align-items: center; gap: 8px; }
.main-title .crumb { color: var(--muted-foreground); font-weight: 500; }
.main-spacer { flex: 1; }

/* segmented variant switcher */
.seg {
  display: inline-flex; align-items: center;
  background: var(--muted);
  border: 1px solid var(--border);
  border-radius: 9px; padding: 3px;
  gap: 2px;
}
.seg button {
  font-size: 12.5px; font-weight: 550;
  color: var(--muted-foreground);
  padding: 5px 11px; border-radius: 6px;
  transition: background .14s, color .14s, box-shadow .14s;
  white-space: nowrap;
}
.seg button[data-on="true"] {
  background: var(--card); color: var(--foreground);
  box-shadow: 0 1px 2px rgba(0,0,0,.1);
}
.seg button:hover:not([data-on="true"]) { color: var(--foreground); }

.icon-btn {
  width: 34px; height: 34px; display: grid; place-items: center;
  border-radius: 8px; color: var(--muted-foreground);
  border: 1px solid transparent;
  transition: background .14s, color .14s, border-color .14s;
}
.icon-btn:hover { background: var(--muted); color: var(--foreground); }

/* empty chat state */
.main-body { flex: 1; min-height: 0; display: flex; flex-direction: column; align-items: center; justify-content: center; padding: 24px; gap: 22px; }
.empty-mark {
  width: 60px; height: 60px; border-radius: 16px;
  background: linear-gradient(145deg, var(--primary), color-mix(in oklch, var(--primary) 60%, #000 8%));
  display: grid; place-items: center; color: var(--primary-foreground);
  font-size: 26px; font-weight: 650;
  box-shadow: inset 0 1px 0 rgba(255,255,255,.25), 0 14px 40px -12px color-mix(in oklch, var(--primary) 60%, transparent);
}
.empty-h { font-size: 22px; font-weight: 600; letter-spacing: -.02em; text-align: center; }
.empty-h span { color: var(--muted-foreground); font-weight: 400; }
.composer {
  width: min(640px, 90%);
  border: 1px solid var(--border);
  background: var(--card);
  border-radius: 16px;
  padding: 14px 14px 12px;
  box-shadow: 0 1px 0 rgba(0,0,0,.02), 0 18px 50px -24px rgba(0,0,0,.18);
  display: flex; flex-direction: column; gap: 12px;
}
.composer-ph { color: var(--muted-foreground); font-size: 15px; }
.composer-row { display: flex; align-items: center; gap: 8px; }
.composer-chip {
  display: inline-flex; align-items: center; gap: 6px;
  font-size: 12.5px; font-weight: 500; color: var(--muted-foreground);
  border: 1px solid var(--border); border-radius: 99px; padding: 5px 11px;
  transition: background .14s, color .14s;
}
.composer-chip:hover { background: var(--muted); color: var(--foreground); }
.composer-send {
  margin-left: auto; width: 34px; height: 34px; border-radius: 9px;
  background: var(--primary); color: var(--primary-foreground);
  display: grid; place-items: center;
  box-shadow: inset 0 1px 0 rgba(255,255,255,.2);
  opacity: .55;
}

/* ============================================================
   Dropdown menu (user menu)
   ============================================================ */
.menu-layer { position: fixed; inset: 0; z-index: 80; }
.menu {
  position: fixed;
  min-width: 268px;
  background: var(--popover);
  color: var(--popover-foreground);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow-pop);
  padding: 6px;
  animation: pop .14s cubic-bezier(.2,.7,.3,1);
  transform-origin: bottom left;
}
@keyframes pop { from { opacity: 0; transform: translateY(6px) scale(.97); } to { opacity: 1; transform: none; } }
.menu-head { display: flex; align-items: center; gap: 10px; padding: 8px 8px 10px; }
.menu-head .user-name { font-size: 13.5px; }
.menu-head .user-sub { color: var(--muted-foreground); }
.menu-sep { height: 1px; background: var(--border); margin: 5px -6px; }
.menu-item {
  width: 100%; display: flex; align-items: center; gap: 11px;
  padding: 8px 8px; border-radius: 7px;
  font-size: 13px; font-weight: 500; color: var(--popover-foreground);
  text-align: left; transition: background .12s;
}
.menu-item__icon { width: 16px; height: 16px; color: var(--muted-foreground); flex: 0 0 16px; }
.menu-item__trail { margin-left: auto; color: var(--muted-foreground); font-size: 12px; display: flex; align-items: center; gap: 6px; }
.menu-item:hover { background: var(--muted); }
.menu-item--danger { color: #dc2626; }
[data-theme="dark"] .menu-item--danger { color: #f4795f; }
.menu-item--danger .menu-item__icon { color: currentColor; }
.menu-badge {
  font-size: 10.5px; font-weight: 650; letter-spacing: .03em;
  color: var(--primary); border: 1px solid color-mix(in oklch, var(--primary) 40%, transparent);
  background: color-mix(in oklch, var(--primary) 12%, transparent);
  border-radius: 5px; padding: 1px 6px;
}
.menu-kbd { font-family: var(--font-mono); font-size: 11px; border: 1px solid var(--border); border-radius: 5px; padding: 1px 5px; background: var(--muted); }

/* theme mini toggle inside menu */
.theme-toggle { display: inline-flex; background: var(--muted); border: 1px solid var(--border); border-radius: 8px; padding: 2px; gap: 2px; }
.theme-toggle button {
  width: 28px; height: 24px; border-radius: 6px; display: grid; place-items: center;
  color: var(--muted-foreground); transition: background .13s, color .13s;
}
.theme-toggle button[data-on="true"] { background: var(--card); color: var(--foreground); box-shadow: 0 1px 2px rgba(0,0,0,.08); }

/* ============================================================
   Command palette (Cmd+K)
   ============================================================ */
.cmdk-layer {
  position: fixed; inset: 0; z-index: 100;
  background: var(--scrim);
  backdrop-filter: blur(2px);
  display: flex; align-items: flex-start; justify-content: center;
  padding-top: 12vh;
  animation: fade .12s ease;
}
@keyframes fade { from { opacity: 0; } to { opacity: 1; } }
.cmdk {
  width: min(620px, 92vw);
  background: var(--popover);
  color: var(--popover-foreground);
  border: 1px solid var(--border);
  border-radius: 14px;
  box-shadow: var(--shadow-pop);
  overflow: hidden;
  animation: cmdkin .16s cubic-bezier(.2,.7,.3,1);
}
@keyframes cmdkin { from { opacity: 0; transform: translateY(-8px) scale(.98); } to { opacity: 1; transform: none; } }
.cmdk-input-row { display: flex; align-items: center; gap: 11px; padding: 14px 16px; border-bottom: 1px solid var(--border); }
.cmdk-input-row svg { color: var(--muted-foreground); flex: 0 0 18px; }
.cmdk-input {
  flex: 1; border: none; outline: none; background: transparent;
  font-family: inherit; font-size: 15.5px; color: var(--foreground);
}
.cmdk-input::placeholder { color: var(--muted-foreground); }
.cmdk-esc { font-family: var(--font-mono); font-size: 11px; color: var(--muted-foreground); border: 1px solid var(--border); border-radius: 6px; padding: 2px 7px; }
.cmdk-list { max-height: min(52vh, 440px); overflow-y: auto; padding: 6px; }
.cmdk-group-label { font-size: 11px; font-weight: 600; letter-spacing: .03em; text-transform: uppercase; color: var(--muted-foreground); padding: 10px 10px 4px; }
.cmdk-item {
  width: 100%; display: flex; align-items: center; gap: 11px;
  padding: 9px 10px; border-radius: 8px;
  font-size: 13.5px; font-weight: 500; color: var(--popover-foreground);
  text-align: left; transition: background .1s;
}
.cmdk-item__icon { width: 17px; height: 17px; color: var(--muted-foreground); flex: 0 0 17px; }
.cmdk-item__sub { margin-left: auto; font-size: 11.5px; color: var(--muted-foreground); }
.cmdk-item[data-active="true"] { background: var(--muted); }
.cmdk-item[data-active="true"] .cmdk-item__icon { color: var(--primary); }
.cmdk-empty { padding: 36px 16px; text-align: center; color: var(--muted-foreground); font-size: 13.5px; }
.cmdk-foot { display: flex; align-items: center; gap: 16px; padding: 9px 14px; border-top: 1px solid var(--border); font-size: 11.5px; color: var(--muted-foreground); }
.cmdk-foot .k { display: inline-flex; align-items: center; gap: 5px; }
.cmdk-foot .kbd { font-family: var(--font-mono); border: 1px solid var(--border); border-radius: 5px; padding: 1px 5px; }

/* toast */
.toast-wrap { position: fixed; bottom: 22px; left: 50%; transform: translateX(-50%); z-index: 120; display: flex; flex-direction: column; gap: 8px; align-items: center; }
.toast {
  background: var(--popover); color: var(--popover-foreground);
  border: 1px solid var(--border); border-radius: 10px;
  padding: 10px 15px; font-size: 13px; font-weight: 500;
  box-shadow: var(--shadow-pop);
  display: flex; align-items: center; gap: 9px;
  animation: toastin .22s cubic-bezier(.2,.7,.3,1);
}
.toast svg { color: var(--primary); }
@keyframes toastin { from { opacity: 0; transform: translateY(10px); } to { opacity: 1; transform: none; } }

/* ============================================================
   VARIANT A — Classic (Claude-like, soft fills)
   default styling already covers this; subtle touches:
   ============================================================ */
[data-variant="a"] .nav-item--active::before { display: none; }

/* ============================================================
   VARIANT B — Grouped cards + left accent bar
   ============================================================ */
[data-variant="b"] .sb-section--card {
  background: var(--sidebar-accent);
  border: 1px solid var(--sidebar-border);
  border-radius: var(--radius);
  padding: 4px 4px 6px;
  margin: 6px 2px;
}
[data-variant="b"] .sb-section--card .sb-label { padding-top: 8px; }
[data-variant="b"] .nav-item--active { background: color-mix(in oklch, var(--primary) 12%, var(--sidebar)); }
[data-variant="b"] .nav-item--active::before {
  content: ""; position: absolute; left: -4px; top: 7px; bottom: 7px; width: 3px;
  border-radius: 99px; background: var(--primary);
}
[data-variant="b"] .nav-item--active .nav-item__label { color: var(--foreground); }
[data-variant="b"] .sb-label .grp-chev { transition: transform .18s; color: var(--sidebar-muted); }
[data-variant="b"] .recent-item--active { background: color-mix(in oklch, var(--primary) 10%, var(--sidebar)); }
[data-variant="b"] .recent-item--active::before {
  content: ""; position: absolute; left: -4px; top: 6px; bottom: 6px; width: 3px;
  border-radius: 99px; background: var(--primary);
}
[data-variant="b"] .recent-item { position: relative; }

/* ============================================================
   VARIANT C — Minimal / pill, accent new-chat button, dots
   ============================================================ */
[data-variant="c"] .sb-body { gap: 1px; padding-top: 2px; }
[data-variant="c"] .nav-item--new {
  background: var(--primary); color: var(--primary-foreground);
  font-weight: 600; box-shadow: inset 0 1px 0 rgba(255,255,255,.18);
}
[data-variant="c"] .nav-item--new .nav-item__icon { color: var(--primary-foreground); }
[data-variant="c"] .nav-item--new:hover { background: var(--primary-hover); }
[data-variant="c"] .nav-item { border-radius: 99px; padding: 9px 13px; }
[data-variant="c"] .nav-item--active { background: color-mix(in oklch, var(--primary) 14%, transparent); color: var(--primary); }
[data-variant="c"] .nav-item--active .nav-item__icon { color: var(--primary); }
[data-variant="c"] .recent-item { border-radius: 99px; padding: 7px 13px; }
[data-variant="c"] .recent-item--active { background: color-mix(in oklch, var(--primary) 12%, transparent); }
[data-variant="c"] .recent-item--active .recent-item__txt { color: var(--primary); }
[data-variant="c"] .sb-label { letter-spacing: .02em; }
[data-variant="c"] .sidebar[data-collapsed="true"] .nav-item--new { border-radius: 12px; }

/* generic: the active marker pseudo only on B */
.nav-item { } /* keep specificity simple */