:root { color-scheme: dark; }
body { background: #171a19; color: #edf1ed; font-family: "Arial Narrow", Arial, sans-serif; }
.app-shell { display: grid; grid-template-columns: 224px minmax(0, 1fr); min-height: 100vh; }
.sidebar { position: sticky; top: 0; width: auto; height: 100vh; padding: 24px 16px; background: #222625; border-right: 5px solid #f2c94c; }
.brand { color: #fff; text-transform: uppercase; }
.brand-mark { border-radius: 0; background: #f2c94c; color: #171a19; }
.brand small { color: #9ea8a2; }
.nav-item { border-radius: 0; border-bottom: 1px solid #454d49; color: #c8d0cb; background: transparent; text-align: left; }
.nav-item { display: block; width: 100%; padding: 12px 14px; text-decoration: none; }
.nav-item:hover, .nav-item.active { color: #171a19; background: #f2c94c; }
.signal-stack { border-radius: 0; border: 1px dashed #65716a; background: #171a19; }
.workspace { min-width: 0; margin: 0; padding: 22px 26px 44px; }
.topbar { border-bottom: 2px solid #65716a; padding-bottom: 16px; }
.topbar h1 { color: #fff; font-size: clamp(30px, 4vw, 48px); text-transform: uppercase; }
.topbar p, .section-heading p, .rail-header p, .hero-copy p { color: #f2c94c; font-family: Consolas, monospace; }
.topbar select, .icon-button, .primary-button { border-radius: 0; border: 1px solid #65716a; }
.primary-button { background: #f2c94c; color: #171a19; box-shadow: 4px 4px 0 #000; }
.cockpit-grid { gap: 12px; }
.hero-cockpit, .decision-rail, .project-dock, .timeline-panel { border: 1px solid #56615b; border-radius: 0; background: #222625; box-shadow: none; }
.hero-cockpit { box-shadow: inset 0 6px #f2c94c; }
.hero-copy h2, .rail-header h2, .section-heading h2 { color: #fff; text-transform: uppercase; }
.metric-ribbon { gap: 0; border: 1px solid #56615b; }
.metric-ribbon article { border-radius: 0; border: 0; border-right: 1px solid #56615b; background: #171a19; }
.metric-ribbon article:last-child { border-right: 0; }
.metric-ribbon strong { color: #f2c94c; font-family: Consolas, monospace; }
.margin-map { border-radius: 0; border: 1px solid #56615b; background-color: #101312; }
.decision-rail { border-left: 5px solid #e46d45; }
.alert-list > *, .automation-list > *, .project-board > * { border-radius: 0; border-color: #56615b; background: #1a1e1c; }
.section-heading, .rail-header { border-bottom: 1px solid #56615b; }
.auth-session { min-height: 42px; }
.period-chip { display: inline-flex; align-items: center; min-height: 42px; padding: 0 12px; border: 1px solid #65716a; color: #c8d0cb; font-family: Consolas, monospace; font-size: 13px; }
.result-count { display: block; margin-top: 7px; color: #9ea8a2; font-family: Consolas, monospace; font-size: 12px; }
.compact-toolbar { display: flex; gap: 8px; }
.ghost-button { min-height: 42px; border: 1px solid #65716a; border-radius: 0; padding: 0 13px; background: transparent; color: #edf1ed; }
.empty-state { grid-column: 1 / -1; padding: 30px 18px; border: 1px dashed #65716a; text-align: center; }
.empty-state span { display: block; margin-top: 7px; color: #9ea8a2; }
button:disabled { cursor: wait; opacity: .6; }
a:focus-visible, button:focus-visible, input:focus-visible, select:focus-visible { outline: 3px solid #f2c94c; outline-offset: 3px; }
html { scroll-behavior: smooth; scroll-padding-top: 18px; }
@media (max-width: 1050px) {
  .app-shell { display: block; }
  .sidebar { position: static; height: auto; border-right: 0; border-bottom: 5px solid #f2c94c; }
  .nav-list { display: grid; grid-template-columns: repeat(3, 1fr); }
  .cockpit-grid { grid-template-columns: 1fr; }
}
@media (max-width: 640px) {
  .workspace { padding: 16px 10px 32px; }
  .metric-ribbon { grid-template-columns: 1fr 1fr; }
  .topbar-controls, .filters, .compact-toolbar { align-items: stretch; flex-direction: column; width: 100%; }
  .topbar-controls > *, .filters > *, .compact-toolbar > * { width: 100%; }
}
@media (prefers-reduced-motion: reduce) { html { scroll-behavior: auto; } }