* { box-sizing: border-box; }
html, body { margin: 0; padding: 0; background: var(--bg); color: var(--text); font-family: "Segoe UI", Tahoma, sans-serif; }
a { color: inherit; text-decoration: none; }
button, select { font: inherit; }
body { min-height: 100vh; }
.app-shell { display: grid; grid-template-columns: 280px 1fr; min-height: 100vh; background: radial-gradient(circle at top right, rgba(255,122,0,.08), transparent 30%), var(--bg); }
.sidebar { position: sticky; top: 0; height: 100vh; padding: 24px 18px; background: linear-gradient(180deg, rgba(18,24,33,.96), rgba(11,15,20,.96)); border-right: 1px solid var(--border); }
.shell-main { min-width: 0; }
.brand { display: flex; align-items: center; gap: 14px; padding: 8px 10px 22px; }
.brand-mark { width: 42px; height: 42px; border-radius: 14px; display: grid; place-items: center; background: linear-gradient(135deg, var(--primary), #ffb066); color: #111; font-weight: 800; }
.brand-name { font-size: 1.2rem; font-weight: 700; }
.brand-subtitle { color: var(--muted); font-size: .78rem; }
.nav { display: grid; gap: 8px; }
.nav-item { display: flex; align-items: center; gap: 12px; padding: 12px 14px; border-radius: 14px; border: 1px solid transparent; color: var(--muted); transition: .2s ease; }
.nav-item::before { content: ""; width: 8px; height: 8px; border-radius: 999px; background: rgba(255,255,255,.12); }
.nav-item:hover { color: var(--text); background: rgba(255,255,255,.03); border-color: rgba(255,255,255,.04); transform: translateX(2px); }
.nav-item.active { color: var(--text); background: rgba(255,122,0,.12); border-color: rgba(255,122,0,.25); box-shadow: inset 0 0 0 1px rgba(255,122,0,.08); }
.nav-item.active::before { background: var(--primary); box-shadow: 0 0 12px rgba(255,122,0,.5); }
.topbar { display: flex; align-items: center; gap: 16px; padding: 22px 24px 14px; }
.topbar h1 { margin: 0; font-size: clamp(1.5rem, 2.2vw, 2rem); }
.topbar p { margin: 6px 0 0; color: var(--muted); max-width: 820px; }
.topbar-toggle { display: none; }
.icon-button, .btn { border: 1px solid var(--border); background: var(--surface); color: var(--text); border-radius: 12px; padding: 10px 14px; cursor: pointer; transition: .2s ease; }
.btn:hover, .icon-button:hover { border-color: rgba(255,122,0,.45); color: #fff; }
.btn-secondary { background: transparent; }
.filter-bar { position: sticky; top: 0; z-index: 20; display: grid; grid-template-columns: 1fr auto; gap: 18px; align-items: start; padding: 14px 24px 16px; backdrop-filter: blur(14px); background: rgba(11,15,20,.84); border-top: 1px solid rgba(255,255,255,.02); border-bottom: 1px solid var(--border); }
.filter-controls { display: grid; grid-template-columns: repeat(6, minmax(120px, 1fr)); gap: 12px; }
.filter-actions { display: grid; gap: 10px; justify-items: end; }
.filter-chips { display: flex; flex-wrap: wrap; gap: 8px; justify-content: flex-end; }
.page-root { padding: 22px 24px 48px; }
.page-grid { display: grid; gap: 18px; }
.grid-2 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
.grid-3 { grid-template-columns: repeat(3, minmax(0, 1fr)); }
.grid-4 { grid-template-columns: repeat(4, minmax(0, 1fr)); }
@media (max-width: 1200px) { .filter-controls { grid-template-columns: repeat(3, minmax(120px, 1fr)); } .grid-4 { grid-template-columns: repeat(2, minmax(0,1fr)); } }
@media (max-width: 960px) { .app-shell { grid-template-columns: 1fr; } .sidebar { position: fixed; inset: 0 auto 0 0; width: 272px; transform: translateX(-102%); z-index: 40; transition: transform .24s ease; } .sidebar.open { transform: translateX(0); } .topbar-toggle { display: inline-flex; } .filter-bar { grid-template-columns: 1fr; } }
@media (max-width: 720px) { .page-root, .filter-bar, .topbar { padding-left: 16px; padding-right: 16px; } .filter-controls, .grid-2, .grid-3, .grid-4 { grid-template-columns: 1fr; } }

.nav-icon { display:inline-grid; place-items:center; width:26px; height:26px; border-radius:8px; background: rgba(255,255,255,.04); border:1px solid rgba(255,255,255,.05); font-size:.68rem; color: var(--muted); font-weight:700; }
.nav-item.active .nav-icon { background: rgba(255,122,0,.18); color: #ffd5ad; border-color: rgba(255,122,0,.2); }

.page-root { animation: pageFade .24s ease; }
@keyframes pageFade { from { opacity: .55; transform: translateY(4px); } to { opacity: 1; transform: translateY(0); } }
.topbar-toggle { min-width: 72px; }