* { box-sizing: border-box; }
html, body { margin: 0; min-height: 100%; background: var(--bg); color: var(--text); font: 16px/1.45 system-ui, sans-serif; }
button, input { font: inherit; }
button, input[type="text"], input[type="file"] { min-height: var(--tap); }
button { border: 1px solid var(--line); border-radius: 10px; padding: 10px 16px; background: var(--surface-2); color: var(--text); cursor: pointer; }
button.primary { background: var(--accent); color: var(--accent-ink); border-color: transparent; font-weight: 700; }
button.danger { border-color: var(--danger); }
button:disabled { opacity: .45; cursor: not-allowed; }
button:focus-visible, input:focus-visible { outline: 3px solid var(--accent); outline-offset: 2px; }
.shell { min-height: 100vh; display: grid; grid-template-columns: auto 1fr; }
.rail { width: 220px; background: var(--surface); border-right: 1px solid var(--line); padding: 14px; display: flex; flex-direction: column; gap: 10px; transition: width .2s; }
.rail.collapsed { width: 78px; }
.rail.collapsed .nav-label, .rail.collapsed .brand-copy { display: none; }
.brand { display: flex; gap: 10px; align-items: center; min-height: 54px; }
.brand-mark { width: 42px; height: 42px; display: grid; place-items: center; background: var(--accent); color: var(--accent-ink); border-radius: 12px; font-weight: 900; }
.brand-copy { font-weight: 700; }
.nav { display: grid; gap: 8px; }
.nav button { text-align: left; display: flex; align-items: center; gap: 12px; }
.main { min-width: 0; display: flex; flex-direction: column; }
.topbar { display: flex; flex-wrap: wrap; align-items: center; gap: 10px; padding: 12px var(--space); border-bottom: 1px solid var(--line); background: rgba(14,28,49,.96); }
.topbar h1 { margin: 0 auto 0 0; font-size: clamp(18px, 2.5vw, 26px); }
.pill { border: 1px solid var(--line); border-radius: 999px; padding: 6px 10px; color: var(--muted); }
.pill.ok { color: var(--ok); }.pill.warn { color: var(--warning); }
.content { width: 100%; max-width: 1280px; margin: 0 auto; padding: var(--space); }
.page-head { display: flex; align-items: center; gap: 12px; margin-bottom: 16px; }
.page-head h2 { margin: 0; }
.grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(min(240px, 100%), 1fr)); gap: 14px; }
.card { background: var(--surface); border: 1px solid var(--line); border-radius: var(--radius); padding: 16px; }
.card h3 { margin-top: 0; }
.metric { font-size: clamp(20px, 3vw, 30px); font-weight: 750; }
.muted, .status { color: var(--muted); }
.status.error { color: var(--danger); }.status.success { color: var(--ok); }
.stack { display: grid; gap: 12px; }
.row { display: flex; flex-wrap: wrap; align-items: center; gap: 10px; }
label { display: grid; gap: 6px; color: var(--muted); }
input[type="text"], input[type="file"] { width: 100%; border: 1px solid var(--line); border-radius: 10px; padding: 10px 12px; color: var(--text); background: var(--bg); }
.records { margin: 0; padding-left: 22px; }
.records li { margin: 8px 0; overflow-wrap: anywhere; }
.preview { border-left: 4px solid var(--accent); }
code { color: var(--accent); }
@media (max-width: 760px) {
  .rail { width: 78px; }
  .rail .nav-label, .rail .brand-copy { display: none; }
  .content { padding: 12px; }
}