/* ===================================================
   觉学 · Desktop shell (admin + coach dashboards)
   Shared layout, sidebar, and top bar patterns.
   =================================================== */

* { margin: 0; padding: 0; box-sizing: border-box; }
body {
  font-family: var(--font-sans); color: var(--ink);
  background: var(--bg-scene); min-height: 100vh;
  -webkit-font-smoothing: antialiased;
}
.shell { display: grid; grid-template-columns: 220px 1fr; min-height: 100vh; }

/* ── Sidebar ───────────────────────────────── */
.side-nav {
  background: var(--glass-thick); backdrop-filter: var(--blur);
  border-right: 1px solid var(--glass-border);
  padding: var(--sp-5) var(--sp-4);
  display: flex; flex-direction: column; gap: var(--sp-5);
}
.brand { display: flex; align-items: center; gap: var(--sp-3); padding: 0 var(--sp-2); }
.brand-icon {
  width: 36px; height: 36px; border-radius: var(--r);
  background: linear-gradient(135deg, var(--saffron), var(--saffron-dark));
  display: flex; align-items: center; justify-content: center;
  box-shadow: 0 4px 12px rgba(224,120,86,.3);
}
.brand-name { font-family: var(--font-serif); font-weight: 700; font-size: 1rem; letter-spacing: 3px; color: var(--ink); }
.brand-sub  { font: var(--text-caption); color: var(--ink-3); letter-spacing: 1px; margin-top: 2px; }

.side-user {
  display: flex; align-items: center; gap: var(--sp-3);
  padding: var(--sp-3); background: var(--glass); border-radius: var(--r-lg);
  border: 1px solid var(--glass-border);
}
.side-avatar {
  width: 36px; height: 36px; border-radius: 50%;
  background: linear-gradient(135deg, var(--gold-light), var(--gold));
  display: flex; align-items: center; justify-content: center;
  font-family: var(--font-serif); font-weight: 700; color: #fff; font-size: .9375rem;
}
.side-user-info { flex: 1; min-width: 0; }
.side-user-name { font-weight: 600; font-size: .8125rem; color: var(--ink); letter-spacing: 1px; }
.side-user-role { font: var(--text-caption); color: var(--ink-3); margin-top: 2px; }

.nav-list { display: flex; flex-direction: column; gap: 4px; }
.nav-section { font: var(--text-caption); color: var(--ink-4); letter-spacing: 2px; padding: var(--sp-3) var(--sp-3) 4px; }
.nav-item {
  display: flex; align-items: center; gap: var(--sp-3);
  padding: 9px var(--sp-3); border-radius: var(--r-sm);
  font-size: .8125rem; font-weight: 500; letter-spacing: 1px;
  color: var(--ink-2); text-decoration: none;
  transition: all var(--dur) var(--ease);
}
.nav-item:hover  { background: var(--glass); }
.nav-item.active { background: var(--saffron-pale); color: var(--saffron-dark); font-weight: 700; }
.nav-item svg { flex-shrink: 0; }

/* ── Main area ──────────────────────────────── */
.main { padding: var(--sp-6) var(--sp-8); overflow-y: auto; }
.top-bar { display: flex; justify-content: space-between; align-items: center; margin-bottom: var(--sp-6); }
.page-title { font-family: var(--font-serif); font-weight: 700; font-size: 1.5rem; color: var(--ink); letter-spacing: 4px; }
.page-sub   { font: var(--text-caption); color: var(--ink-3); margin-top: 4px; letter-spacing: 1px; }
.top-actions { display: flex; align-items: center; gap: var(--sp-3); }

/* Lang button size override (mobile default is 22px in components.css) */
.lang-btn { height: 28px; padding: 0 12px; font-size: .75rem; }

.icon-btn {
  width: 34px; height: 34px; border-radius: var(--r-sm);
  background: var(--glass); border: 1px solid var(--glass-border);
  display: flex; align-items: center; justify-content: center;
  cursor: pointer; position: relative;
}
.notif-dot {
  position: absolute; top: 4px; right: 4px;
  width: 7px; height: 7px; border-radius: 50%; background: var(--saffron);
}