.app-shell { display: grid; grid-template-columns: 244px minmax(0, 1fr); min-height: 100vh; }
.sidebar { min-width: 0; padding: 28px 18px 18px; border-right: 1px solid var(--j-border); background: var(--j-surface); display: flex; flex-direction: column; }
.brand { display: flex; align-items: center; gap: 12px; margin-bottom: 34px; text-decoration: none; color: var(--j-text); }
.brand span { font-size: 23px; font-weight: 750; line-height: 1.2; letter-spacing: .02em; }
.brand-name b { font-weight: inherit; }
.brand-name b:first-child { color: var(--j-accent-text); }
.brand-name b:last-child { color: var(--j-muted); }
.brand-tagline { display: block; margin-top: 5px; font-size: 11px; line-height: 1.4; letter-spacing: .01em; font-weight: 500; }
.sidebar select { width: 100%; font-size: var(--j-font-sm); }
nav { margin-top: 24px; }
.nav-group { margin: 20px 12px 8px; font-size: 11px; font-weight: 700; letter-spacing: .06em; color: var(--j-muted); }
.nav-link { display: flex; gap: 12px; padding: 9px 12px; margin: 3px 0; border-radius: var(--j-control-radius); align-items: center; color: var(--j-muted); text-decoration: none; font-weight: 500; }
.nav-link:hover { background: var(--j-surface-alt); color: var(--j-text); }
.nav-link[aria-current="page"] { background: var(--j-selected); color: var(--j-selected-text); font-weight: 650; }
.sidebar-bottom { border-top: 1px solid var(--j-border); margin-top: auto; padding-top: 20px; display: flex; gap: 10px; align-items: center; }
.sidebar-bottom strong { font-size: var(--j-font-sm); display: block; }
.sidebar-bottom small { display: block; }
.avatar { display: grid; place-items: center; width: 34px; height: 34px; border-radius: 50%; background: var(--j-selected); color: var(--j-selected-text); font-size: 12px; font-weight: 700; }
.workspace { min-width: 0; }
.topbar { display: flex; justify-content: space-between; align-items: center; flex-wrap: wrap; gap: 12px; min-height: 76px; padding: 16px 36px; border-bottom: 1px solid var(--j-border); background: var(--j-surface); }
.preview-label { font-size: var(--j-font-sm); color: var(--j-muted); }
.topbar-controls { display: flex; gap: 8px; }
.compact-select { font-size: var(--j-font-sm); min-height: 36px; padding: 5px 8px; }
main { max-width: 1360px; margin: auto; padding: 36px; outline: none; }
main:focus-visible { outline: none; }
.page-heading { display: flex; justify-content: space-between; align-items: flex-start; gap: 20px; margin-bottom: 26px; }
.heading-actions { display: flex; gap: 8px; flex-wrap: wrap; }
.summary { padding: 24px; margin-bottom: 26px; display: grid; grid-template-columns: minmax(0,1.35fr) minmax(0,1fr); gap: 24px; }
.summary-identity { display: flex; align-items: center; gap: 10px; flex-wrap: wrap; }
.summary-facts { display: grid; grid-template-columns: 1fr 1fr; gap: 20px; border-left: 1px solid var(--j-border); padding-left: 24px; align-content: center; }
.fact strong { display: block; font-size: 1.35rem; font-weight: 650; }
.fact small { display: block; }
.section-heading { display: flex; align-items: center; justify-content: space-between; gap: 12px; margin: 28px 0 14px; }
.module-grid { display: grid; grid-template-columns: repeat(3,minmax(0,1fr)); gap: 14px; }
.module-card { padding: 20px; display: flex; flex-direction: row; gap: 14px; align-items: center; color: var(--j-text); text-decoration: none; min-height: 86px; transition: border-color .15s; }
.module-card:hover { border-color: var(--j-primary); }
.module-card .icon { width: 23px; height: 23px; color: var(--j-accent-text); }
.module-card h3 { flex: 1; }
.module-card > .icon:last-child { width: 16px; height: 16px; color: var(--j-muted); }
.table-wrap { overflow-x: auto; }
table { border-collapse: collapse; width: 100%; text-align: left; }
th { font-weight: 500; color: var(--j-muted); font-size: var(--j-font-sm); background: var(--j-surface-alt); }
th, td { padding: 14px 20px; border-bottom: 1px solid var(--j-border); }
tr:last-child td { border-bottom: 0; }
td strong { display: block; font-size: var(--j-font-base); font-weight: 600; }
td small { display: block; }
.padded { padding: 24px; }
.padded h2 { margin-bottom: 16px; }
.empty-state { padding: 46px 24px; text-align: center; }
.empty-state .icon { width: 32px; height: 32px; color: var(--j-muted); margin-bottom: 10px; }
.theme-grid { display: grid; grid-template-columns: repeat(3,minmax(0,1fr)); gap: 14px; margin: 20px 0; }
.theme-choice { padding: 14px; display: block; text-align: left; font-weight: 400; border: 2px solid var(--j-border); }
.theme-choice[aria-pressed="true"] { border-color: var(--j-primary); }
.theme-choice strong { display: block; margin: 12px 0 3px; }
.theme-preview { background: var(--j-bg); border: 1px solid var(--j-border); border-radius: 5px; padding: 8px; display: grid; grid-template-columns: 18px 1fr; gap: 7px; height: 66px; }
.theme-preview > span:first-child { background: var(--j-primary); border-radius: 3px; }
.theme-preview > span:last-child { background: var(--j-surface); border-radius: 3px; border: 1px solid var(--j-border); }
.settings-row { display: flex; align-items: center; justify-content: space-between; gap: 24px; padding: 22px 0; border-top: 1px solid var(--j-border); }
.settings-row p { font-size: var(--j-font-sm); color: var(--j-muted); margin-top: 4px; }
.notice { padding: 12px 16px; color: var(--j-info); background: var(--j-info-bg); border-radius: var(--j-control-radius); font-size: var(--j-font-sm); margin-top: 16px; }
.component-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 20px; }
.component-line { display: flex; flex-wrap: wrap; align-items: center; gap: 10px; margin: 16px 0; }
.icon-sample { display: flex; align-items: center; gap: 10px; padding: 8px 0; }
.swatches { display: grid; grid-template-columns: repeat(4,1fr); gap: 12px; }
.swatch { min-height: 55px; border-radius: 7px; background: var(--swatch-color); border: 1px solid var(--j-border); }
.swatches small { display: block; margin-top: 6px; }
.brand-options { display: grid; grid-template-columns: repeat(2,minmax(0,1fr)); gap: 20px; }
.icon-options { display: grid; grid-template-columns: repeat(3,minmax(0,1fr)); gap: 20px; }
.brand-sizes { display: flex; align-items: end; gap: 24px; min-height: 110px; margin: 16px 0; }
.brand-sizes > div { display: grid; gap: 8px; justify-items: center; }
.icon-option button { margin-top: 16px; }
.icon-option button[aria-pressed="true"] { background: var(--j-selected); color: var(--j-selected-text); border-color: var(--j-primary); }
@media (min-width: 1000px) { .sidebar { position: sticky; top: 0; height: 100vh; overflow-y: auto; } }
@media (max-width: 1100px) { .module-grid { grid-template-columns: repeat(2,minmax(0,1fr)); } .theme-grid { grid-template-columns: repeat(2,minmax(0,1fr)); } .page-heading { flex-direction: column; } }
@media (max-width: 800px) {
  .app-shell { grid-template-columns: minmax(0,1fr); }
  .sidebar { padding: 16px; border-right: 0; border-bottom: 1px solid var(--j-border); }
  .brand { margin-bottom: 16px; }
  .sidebar select { max-width: 360px; }
  nav { margin-top: 16px; display: flex; gap: 6px; overflow-x: auto; padding: 3px 0 6px; }
  .nav-link { white-space: nowrap; padding: 10px; margin: 0; }
  .nav-group, .sidebar-bottom { display: none; }
  .topbar { padding: 14px 20px; }
  main { padding: 24px 20px; }
  .component-grid { grid-template-columns: 1fr; }
  .icon-options { grid-template-columns: 1fr; }
}
@media (max-width: 520px) {
  main { padding: 24px 16px; } .topbar { padding: 12px 16px; }
  .summary { grid-template-columns: 1fr; padding: 20px; }
  .summary-facts { border-left: 0; border-top: 1px solid var(--j-border); padding: 16px 0 0; }
  .module-grid { grid-template-columns: 1fr; }
  .module-card { min-height: 72px; }
  .brand-options { grid-template-columns: 1fr; }
  .padded { padding: 20px; }
  .settings-row { align-items: flex-start; flex-direction: column; gap: 12px; }
  .settings-row select { width: 100%; }
  .theme-choice { padding: 10px; }
  th, td { padding: 12px; }
  .responsive-table thead { display: none; }
  .responsive-table tr { display: block; padding: 16px; border-bottom: 1px solid var(--j-border); }
  .responsive-table td { display: block; border: 0; padding: 4px 0; }
  .responsive-table td[data-label]::before { content: attr(data-label) ": "; color: var(--j-muted); font-size: var(--j-font-sm); }
}