/* App shell: sidebar on desktop, icon rail on tablet, top bar with a drawer on phones. */
.app { display: grid; grid-template-columns: var(--sidebar-w) 1fr; min-height: 100vh; }
.sidebar { position: sticky; top: 0; height: 100vh; display: flex; flex-direction: column; background: var(--surface); border-right: 1px solid var(--line); padding: var(--sp-4) var(--sp-3); gap: var(--sp-2); }
.sidebar .brand { display: flex; align-items: center; gap: 10px; font-family: var(--serif); font-weight: 500; letter-spacing: -.04em; font-size: 24px; color: var(--ink); padding: var(--sp-2) var(--sp-3) var(--sp-4); }
.sidebar .brand:hover { text-decoration: none; }
.sidebar .brand svg { width: 28px; height: 28px; flex: none; }
.sidebar .cta { margin: 0 var(--sp-2) var(--sp-3); }
.sidebar .group { font-size: var(--fs-xs); font-weight: 600; letter-spacing: var(--track); text-transform: uppercase; color: var(--muted); padding: var(--sp-4) var(--sp-3) var(--sp-1); }
.sidebar nav { display: flex; flex-direction: column; gap: 2px; }
.sidebar nav a { display: flex; align-items: center; gap: 10px; padding: 8px 12px; border-radius: var(--r-pill); color: var(--ink-2); font-weight: 500; }
.sidebar nav a svg { width: 18px; height: 18px; flex: none; opacity: .8; }
.sidebar nav a:hover { background: var(--surface-2); color: var(--ink); text-decoration: none; }
.sidebar nav a.active { background: var(--brand-soft); color: var(--brand); } .sidebar nav a.active svg { opacity: 1; }
.sidebar .user { margin-top: auto; border-top: 1px solid var(--line); padding-top: var(--sp-3); }
.sidebar .user summary { display: flex; align-items: center; gap: 10px; padding: 8px 12px; border-radius: 8px; cursor: pointer; }
.sidebar .user summary:hover, .sidebar .user[open] summary { background: var(--surface-2); }
.sidebar .user .name { font-weight: 600; font-size: var(--fs-sm); line-height: 1.2; } .sidebar .user .mail { font-size: var(--fs-xs); color: var(--muted); }
.sidebar .user .menu-panel { position: static; margin-top: var(--sp-2); box-shadow: none; }
.topbar { display: none; }
.content { min-width: 0; }
.content-in { max-width: var(--content-max); margin: 0 auto; padding: var(--sp-8) var(--sp-8) var(--sp-12); }
.page-head { display: flex; justify-content: space-between; align-items: flex-end; gap: var(--sp-5); flex-wrap: wrap; margin-bottom: var(--sp-6); }
.page-head .eyebrow { font-size: var(--fs-xs); font-weight: 600; letter-spacing: var(--track); text-transform: uppercase; color: var(--muted); margin-bottom: var(--sp-1); }
.page-head .lede { color: var(--muted); margin-top: var(--sp-2); max-width: 70ch; }
.page-head .actions { display: flex; gap: var(--sp-2); align-items: center; flex-wrap: wrap; }
.auth { min-height: 100vh; display: grid; place-items: center; padding: var(--sp-6); }
.auth .card { width: min(440px, 100%); }
.auth .brand { display: flex; justify-content: center; align-items: center; gap: 10px; font-family: var(--serif); font-weight: 500; letter-spacing: -.04em; font-size: 26px; color: var(--ink); margin-bottom: var(--sp-5); }
.auth .brand svg { width: 30px; height: 30px; }
.subnav { position: sticky; top: 0; z-index: 10; background: var(--bg); padding: var(--sp-2) 0; margin: calc(-1 * var(--sp-2)) 0 var(--sp-4); display: flex; gap: var(--sp-1); overflow-x: auto; }
.subnav a { padding: 5px 11px; border-radius: var(--r-pill); font-size: var(--fs-sm); font-weight: 500; color: var(--ink-2); white-space: nowrap; }
.subnav a:hover { background: var(--surface); text-decoration: none; }
.stack > * + * { margin-top: var(--sp-3); } .stack-lg > * + * { margin-top: var(--sp-6); }
.row { display: flex; gap: var(--sp-4); flex-wrap: wrap; align-items: flex-start; }
.row.between { justify-content: space-between; align-items: center; } .row.center { align-items: center; } .row.bottom { align-items: flex-end; }
.col { flex: 1; min-width: 240px; } .col.wide { flex: 2; }
.grid-2 { display: grid; grid-template-columns: repeat(auto-fit, minmax(300px, 1fr)); gap: var(--sp-5); }
.grid-3 { display: grid; grid-template-columns: repeat(auto-fit, minmax(240px, 1fr)); gap: var(--sp-5); }

/* Large desktop: wider content column, more breathing room */
@media (min-width: 1600px) {
  .content-in { max-width: var(--content-max-wide); padding: var(--sp-10) var(--sp-12) var(--sp-12); }
}
/* Tablet: icon rail */
@media (max-width: 1100px) and (min-width: 721px) {
  .app { grid-template-columns: var(--rail-w) 1fr; }
  .sidebar { padding: var(--sp-4) var(--sp-2); align-items: stretch; }
  .sidebar .brand span, .sidebar nav a span, .sidebar .group, .sidebar .user .txt, .sidebar .cta span { display: none; }
  .sidebar .brand { justify-content: center; padding: var(--sp-2) 0 var(--sp-4); }
  .sidebar .cta { margin: 0 0 var(--sp-3); justify-content: center; padding: 10px; }
  .sidebar nav a { justify-content: center; padding: 10px; }
  .sidebar .user summary { justify-content: center; padding: 8px; }
  .sidebar .user .menu-panel { position: absolute; left: calc(var(--rail-w) - 8px); bottom: var(--sp-4); }
  .sidebar .user { position: relative; }
  .content-in { padding: var(--sp-6) var(--sp-5) var(--sp-10); }
}
/* Phone: top bar and drawer */
@media (max-width: 720px) {
  .app { display: block; }
  .sidebar { display: none; }
  .topbar { display: block; position: sticky; top: 0; z-index: 20; background: var(--surface); border-bottom: 1px solid var(--line); }
  .topbar-in { display: flex; align-items: center; gap: var(--sp-3); height: var(--topbar-h); padding: 0 var(--sp-4); }
  .topbar .brand { display: flex; align-items: center; gap: 8px; font-family: var(--serif); font-weight: 500; letter-spacing: -.04em; font-size: 22px; color: var(--ink); } .topbar .brand svg { width: 26px; height: 26px; }
  .topbar .brand:hover { text-decoration: none; }
  .topbar .drawer { margin-left: auto; }
  .topbar .drawer > summary { cursor: pointer; padding: 6px 12px; border: 1px solid var(--line); border-radius: 8px; font-weight: 600; }
  .topbar .drawer .menu-panel { position: fixed; left: 0; right: 0; top: var(--topbar-h); border-radius: 0 0 var(--r) var(--r); max-height: calc(100vh - var(--topbar-h)); overflow: auto; }
  .topbar .drawer .menu-panel a, .topbar .drawer .menu-panel button { padding: 12px 14px; font-size: var(--fs-md); }
  .content-in { padding: var(--sp-5) var(--sp-4) var(--sp-10); }
  .subnav { top: var(--topbar-h); }
  .page-head { align-items: flex-start; }
  h1 { font-size: var(--fs-2xl); }
  .auth { min-height: calc(100vh - var(--topbar-h)); }
}