/* ================================================================
   LAYOUT — sidebar navigation, top bar, page structure
   ================================================================ */

.shell { display: grid; grid-template-columns: 240px minmax(0, 1fr); min-height: 100vh; }

/* Sidebar */
.sidebar {
  position: sticky; top: 0; height: 100vh; overflow-y: auto;
  background: var(--navy); color: #CBD5E1; padding: 18px 12px 24px;
  display: flex; flex-direction: column; gap: 4px; z-index: 60;
}
.sidebar .brand { display: flex; flex-direction: column; align-items: center; gap: 12px; padding: 10px 10px 20px; margin-bottom: 6px; color: #fff; text-align: center; border-bottom: 1px solid rgba(255,255,255,0.08); }
.sidebar .brand img { height: 84px; width: 84px; object-fit: contain; border-radius: 20px; background: #fff; padding: 10px; outline: 2px solid rgba(147,197,253,0.55); outline-offset: 4px; transition: transform 0.2s; }
.sidebar .brand:hover img { transform: scale(1.04); }
.brand-text { display: flex; flex-direction: column; align-items: center; gap: 4px; }
.brand-title { font: 700 19px 'Space Grotesk', sans-serif; color: #fff; line-height: 1.1; }
.brand-sub { font: 400 10px 'Space Mono', monospace; letter-spacing: 0.12em; text-transform: uppercase; color: #93C5FD; }
.nav-group { font: 400 10px 'Space Mono', monospace; letter-spacing: 0.14em; text-transform: uppercase; color: #64748B; padding: 14px 12px 6px; }
.nav-link {
  display: flex; align-items: center; gap: 10px; padding: 9px 12px; border-radius: var(--radius-sm);
  color: #CBD5E1; font: 500 14px 'Inter', sans-serif; transition: background 0.2s, color 0.2s;
}
.nav-link .ico { width: 18px; text-align: center; opacity: 0.8; font-size: 14px; }
.nav-link:hover { background: rgba(255,255,255,0.06); color: #fff; }
.nav-link.active { background: var(--grad-primary); color: #fff; box-shadow: 0 6px 20px rgba(29,111,219,0.35); }
.nav-link.active .ico { opacity: 1; }
.nav-badge { margin-left: auto; background: var(--red); color: #fff; font: 700 10px 'Inter', sans-serif; padding: 1px 7px; border-radius: var(--radius-pill); }
.sidebar-foot { margin-top: auto; padding: 16px 12px 0; font-size: 11px; color: #64748B; }

/* Top bar */
.main { min-width: 0; display: flex; flex-direction: column; }
.topbar {
  position: sticky; top: 0; z-index: 50; display: flex; align-items: center; gap: 12px;
  padding: 12px 24px; background: rgba(255,255,255,0.92); backdrop-filter: blur(20px); -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--border);
}
.menu-btn { display: none; }
.topbar .spacer { flex: 1; }
.quick-add { position: relative; }
.quick-add summary { list-style: none; }
.quick-add summary::-webkit-details-marker { display: none; }
.quick-menu {
  position: absolute; right: 0; top: calc(100% + 8px); min-width: 200px; z-index: 70;
  background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius-md); box-shadow: var(--shadow-md); padding: 6px;
}
.quick-menu button {
  display: block; width: 100%; text-align: left; border: 0; background: none; padding: 9px 12px; border-radius: var(--radius-xs);
  font: 500 13px 'Inter', sans-serif; color: var(--text-medium); cursor: pointer;
}
.quick-menu button:hover { background: var(--bg-blue-tint); color: var(--primary); }
.user-chip { display: flex; align-items: center; gap: 10px; padding-left: 12px; border-left: 1px solid var(--border-medium); }
.user-chip .who { line-height: 1.2; }
.user-chip .who strong { display: block; font-size: 13px; color: var(--navy); }
.user-chip .who span { font-size: 11px; color: var(--muted); }

.container { width: 100%; max-width: 1320px; margin: 0 auto; padding: 24px; }
main { flex: 1; }

/* Page header */
.page-head { display: flex; flex-wrap: wrap; gap: 16px; align-items: flex-end; justify-content: space-between; margin-bottom: 20px; }
.page-title { font-size: 26px; letter-spacing: -0.01em; display: flex; align-items: center; gap: 10px; flex-wrap: wrap; }
.page-sub { color: var(--muted); margin: 6px 0 0; }
.page-actions { display: flex; flex-wrap: wrap; gap: 8px; }
.crumbs { display: flex; gap: 8px; font-size: 13px; color: var(--text-light); margin-bottom: 6px; }
.crumbs a { color: var(--muted); }
.crumbs a:hover { color: var(--primary); }

/* Grids */
.grid-2 { display: grid; grid-template-columns: minmax(0, 2fr) minmax(0, 1fr); gap: 20px; align-items: start; }
.grid-halves { display: grid; grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 20px; align-items: start; }
.cards { display: grid; grid-template-columns: repeat(auto-fit, minmax(190px, 1fr)); gap: 16px; margin-bottom: 20px; }
a.card { color: inherit; display: block; }

.backdrop { display: none; }

@media (max-width: 1100px) {
  .grid-2, .grid-halves { grid-template-columns: minmax(0, 1fr); }
}
@media (max-width: 900px) {
  .shell { grid-template-columns: minmax(0, 1fr); }
  .sidebar { position: fixed; left: 0; top: 0; bottom: 0; width: 260px; transform: translateX(-100%); transition: transform 0.25s; }
  .nav-open .sidebar { transform: none; }
  .nav-open .backdrop { display: block; position: fixed; inset: 0; background: rgba(15,23,42,0.45); z-index: 55; }
  .menu-btn { display: inline-grid; place-items: center; }
  .topbar { padding: 10px 16px; }
  .container { padding: 16px; }
}
@media (max-width: 600px) {
  .user-chip .who { display: none; }
  .page-title { font-size: 22px; }
  .cards { grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 10px; }
}