:root {
  --trs-bg: #f4f6fb;
  --trs-surface: #ffffff;
  --trs-border: #e7eaf3;
  --trs-text: #1a1f36;
  --trs-muted: #6b7280;
  --trs-primary: #4f46e5;
  --trs-primary-dark: #3730a3;
  --trs-success: #16a34a;
  --trs-sidebar-bg: #12142b;
  --trs-sidebar-text: #c7c9e0;
  --trs-radius: 12px;
}

body.trs-app { background: var(--trs-bg); color: var(--trs-text); font-family: -apple-system, "Segoe UI", Roboto, sans-serif; }

.trs-shell { display: flex; min-height: 100vh; }

.trs-sidebar { width: 240px; background: var(--trs-sidebar-bg); color: var(--trs-sidebar-text); flex-shrink: 0; padding: 24px 16px; }
.trs-brand { font-weight: 700; font-size: 1.1rem; color: #fff; margin-bottom: 24px; padding-left: 8px; }
.trs-nav { display: flex; flex-direction: column; gap: 2px; }
.trs-nav-link { color: var(--trs-sidebar-text); text-decoration: none; padding: 10px 12px; border-radius: 8px; font-size: 0.925rem; }
.trs-nav-link:hover { background: rgba(255,255,255,0.06); color: #fff; }
.trs-nav-link.active { background: var(--trs-primary); color: #fff; }

.trs-main { flex: 1; min-width: 0; }
.trs-topbar { height: 64px; display: flex; align-items: center; padding: 0 24px; background: var(--trs-surface); border-bottom: 1px solid var(--trs-border); }
.trs-content { padding: 24px; }

.trs-card { background: var(--trs-surface); border: 1px solid var(--trs-border); border-radius: var(--trs-radius); padding: 20px; }
.trs-card-label { color: var(--trs-muted); font-size: 0.8rem; text-transform: uppercase; letter-spacing: 0.04em; margin-bottom: 6px; }
.trs-card-value { font-size: 1.5rem; font-weight: 700; }

.trs-auth-body { background: var(--trs-bg); min-height: 100vh; display: flex; align-items: center; justify-content: center; padding: 24px; font-family: -apple-system, "Segoe UI", Roboto, sans-serif; }
.trs-auth-card { background: var(--trs-surface); border: 1px solid var(--trs-border); border-radius: var(--trs-radius); padding: 36px; width: 100%; max-width: 400px; box-shadow: 0 8px 24px rgba(20,20,50,0.06); }
.trs-auth-card-wide { max-width: 560px; }

.btn-primary { background: var(--trs-primary); border-color: var(--trs-primary); }
.btn-primary:hover { background: var(--trs-primary-dark); border-color: var(--trs-primary-dark); }

@media (max-width: 767px) {
  .trs-sidebar { position: fixed; left: -240px; top: 0; bottom: 0; z-index: 40; transition: left 0.2s ease; }
  .trs-sidebar.open { left: 0; }
}