:root{--app-header-height:3rem;--app-sidebar-width:16rem;--app-bg:#f4f4f4;--app-surface:#fff;--app-border:#e0e0e0;--app-text-muted:#525252;--app-blue:#0f62fe}*{box-sizing:border-box}body{background:var(--app-bg);color:#161616;margin:0}a{color:inherit;text-decoration:none}.app-shell{min-height:100vh}.app-header{z-index:20;height:var(--app-header-height);color:#f4f4f4;background:#161616;border-bottom:1px solid #393939;align-items:center;display:flex;position:fixed;inset:0 0 auto}.app-header__brand{height:100%;min-width:var(--app-sidebar-width);align-items:center;gap:.75rem;padding:0 1rem;font-weight:600;display:flex}.app-header__title{color:#c6c6c6;border-left:1px solid #525252;padding-left:1rem;font-size:.875rem}.app-sidebar{top:var(--app-header-height);width:var(--app-sidebar-width);border-right:1px solid var(--app-border);z-index:10;background:#fff;position:fixed;bottom:0;left:0;overflow:auto}.app-sidebar__section{color:#6f6f6f;letter-spacing:.04em;text-transform:uppercase;padding:1rem 1rem .5rem;font-size:.75rem}.app-nav{flex-direction:column;display:flex}.app-nav__link{color:#393939;border-left:3px solid #0000;align-items:center;gap:.75rem;min-height:2.75rem;padding:0 1rem;font-size:.875rem;display:flex}.app-nav__link:hover{background:#f4f4f4}.app-nav__link--active{border-left-color:var(--app-blue);color:#0f62fe;background:#edf5ff;font-weight:600}.app-main{padding:calc(var(--app-header-height) + 2rem) 2rem 3rem calc(var(--app-sidebar-width) + 2rem)}.page-stack{gap:1.5rem;display:grid}.page-header{gap:.5rem;max-width:72rem;display:grid}.page-header h1{margin:0;font-size:clamp(2rem,4vw,3.25rem);font-weight:400;line-height:1.05}.page-header p{max-width:52rem;color:var(--app-text-muted);margin:0;font-size:1rem;line-height:1.5}.dashboard-grid{grid-template-columns:repeat(12,minmax(0,1fr));gap:1rem;display:grid}.span-3{grid-column:span 3}.span-4{grid-column:span 4}.span-6{grid-column:span 6}.span-8{grid-column:span 8}.span-12{grid-column:span 12}.panel{border:1px solid var(--app-border);background:var(--app-surface);min-width:0}.panel__header{border-bottom:1px solid var(--app-border);justify-content:space-between;align-items:flex-start;gap:1rem;padding:1rem;display:flex}.panel__title{margin:0;font-size:1rem;font-weight:600}.panel__description{color:var(--app-text-muted);margin:.25rem 0 0;font-size:.875rem;line-height:1.45}.panel__body{padding:1rem}.metric-card{flex-direction:column;grid-column:span 3;justify-content:space-between;min-width:0;min-height:9.5rem;padding:1rem;display:flex;overflow:hidden}.metric-card__label{color:var(--app-text-muted);font-size:.875rem;line-height:1.25}.metric-card__value{overflow-wrap:anywhere;word-break:break-word;margin-top:1rem;font-size:clamp(1.35rem,2.2vw,2rem);font-weight:300;line-height:1.1}.metric-card__meta{color:var(--app-text-muted);overflow-wrap:anywhere;margin-top:.5rem;font-size:.75rem;line-height:1.25}.chart-box{width:100%;min-height:20rem}.heatmap{gap:2px;display:grid;overflow-x:auto}.heatmap__row{gap:2px;display:grid}.heatmap__cell{color:#161616;place-items:center;min-width:4rem;min-height:2.4rem;font-size:.7rem;display:grid}.form-grid{grid-template-columns:repeat(2,minmax(0,1fr));gap:1rem;display:grid}.button-row{flex-wrap:wrap;align-items:center;gap:.75rem;display:flex}.code-block{white-space:pre-wrap;border:1px solid var(--app-border);color:#f4f4f4;background:#262626;padding:1rem;font-size:.875rem;line-height:1.5;overflow:auto}.pipeline{gap:.75rem;display:grid}.pipeline__step{border:1px solid var(--app-border);background:#fff;grid-template-columns:3rem 1fr;align-items:start;gap:1rem;padding:1rem;display:grid}.pipeline__number{color:#fff;background:#0f62fe;place-items:center;height:2rem;font-weight:600;display:grid}@media (max-width:900px){.app-header__brand{min-width:auto}.app-header__title{display:none}.app-sidebar{width:100%;padding-top:var(--app-header-height);border-right:0;border-bottom:1px solid var(--app-border);position:static}.app-main{padding:1rem}.app-nav{grid-template-columns:repeat(2,minmax(0,1fr));display:grid}.span-3,.span-4,.span-6,.span-8,.metric-card,.span-12{grid-column:span 12}.form-grid{grid-template-columns:1fr}}