/* Shell layout per 05 §2 (Altushi grammar). Built for 1366×768 first. */
* { box-sizing: border-box; }
html { font-size: var(--text-base); }
body {
  margin: 0;
  font-family: var(--font-ui);
  color: var(--ink);
  background: var(--surface-2);
}

.shell { display: flex; min-height: 100vh; }

/* sidebar */
.sidebar {
  width: var(--sidebar-w);
  flex: 0 0 auto;
  background: var(--paper);
  border-right: 1px solid var(--border-2);
  padding: 0.75rem 0;
}
.brand {
  display: flex; align-items: center; gap: 0.5rem;
  padding: 0.5rem 1rem 1rem;
  border-bottom: 1px solid var(--border-2);
}
.brand-mark {
  display: inline-flex; align-items: center; justify-content: center;
  width: 32px; height: 32px; border-radius: var(--radius);
  background: var(--primary); color: var(--paper); font-weight: 700;
}
.brand-name { font-weight: 700; }
.nav-group { padding: 0.75rem 0 0; }
.nav-group-title {
  display: flex; align-items: center; gap: 0.5rem;
  padding: 0.25rem 1rem;
  font-size: 0.75rem; font-weight: 700; text-transform: uppercase;
  color: var(--muted-2); letter-spacing: 0.04em;
}
.dept-dot { width: 8px; height: 8px; border-radius: 50%; background: var(--muted-3); }
.dept-dot[data-dept="registration"] { background: var(--dept-registration); }
.dept-dot[data-dept="appointments"] { background: var(--dept-appointments); }
.dept-dot[data-dept="billing"] { background: var(--dept-billing); }
.dept-dot[data-dept="diagnostics"] { background: var(--dept-diagnostics); }
.dept-dot[data-dept="lis"] { background: var(--dept-lis); }
.dept-dot[data-dept="dashboard"] { background: var(--dept-dashboard); }
.dept-dot[data-dept="admin"] { background: var(--dept-admin); }
.dept-dot[data-dept="notifications"] { background: var(--dept-notifications); }
.nav-item {
  display: block;
  min-height: var(--target-min);
  line-height: var(--target-min);
  padding: 0 1rem 0 2.25rem;
  color: var(--ink-2); text-decoration: none;
}
.nav-item:hover { background: var(--surface-1); }
.nav-item.active { background: var(--primary-active); color: var(--paper); }

/* main column */
.main { flex: 1 1 auto; display: flex; flex-direction: column; min-width: 0; }
.topbar {
  display: flex; align-items: center; justify-content: space-between;
  min-height: 56px;
  background: var(--paper);
  border-bottom: 1px solid var(--border-2);
  padding: 0 1.25rem;
}
.breadcrumb { font-weight: 500; color: var(--ink-2); }
.topbar-right { display: flex; align-items: center; gap: 0.75rem; }
.user-chip { color: var(--ink-2); }
.user-role { color: var(--muted-2); font-size: 0.875rem; }
.inline-form { display: inline; }

.content { flex: 1 1 auto; padding: 1.25rem; }

/* status footer (05 §2) */
.status-footer {
  display: flex; gap: 1.5rem; align-items: center;
  min-height: 36px;
  background: var(--ink); color: var(--surface-1);
  font-size: 0.8125rem;
  padding: 0 1.25rem;
}
.status-ok { color: var(--success-on-dark); }
.fkey-map { margin-left: auto; color: var(--muted-3); }

/* buttons & forms — 44px targets (§7) */
.btn {
  min-height: var(--target-min);
  padding: 0 1.25rem;
  border: 1px solid var(--border-1); border-radius: var(--radius);
  background: var(--paper); color: var(--ink);
  font: inherit; cursor: pointer;
}
.btn-primary { background: var(--primary); border-color: var(--primary-dark); color: var(--paper); font-weight: 500; }
.btn-primary:hover { background: var(--primary-dark); }
.btn-quiet { border-color: transparent; background: transparent; color: var(--muted-1); }
.btn-quiet:hover { color: var(--ink); }

.field { display: block; margin-bottom: 1rem; }
.field-label { display: block; font-weight: 500; margin-bottom: 0.25rem; }
.field-input {
  width: 100%; min-height: var(--target-min);
  padding: 0 0.75rem;
  border: 1px solid var(--border-1); border-radius: var(--radius);
  font: inherit; color: var(--ink); background: var(--paper);
}
.field-input:focus { outline: 2px solid var(--primary); outline-offset: 0; border-color: var(--primary); }

.error-note { color: var(--danger); font-weight: 500; }   /* colour + words (§7 U12) */

/* login */
.login-wrap {
  min-height: 100vh; display: flex; align-items: center; justify-content: center;
}
.login-card {
  width: 380px; background: var(--paper);
  border: 1px solid var(--border-2); border-radius: var(--radius);
  padding: 2rem;
}
.login-card h1 { margin: 0 0 1.5rem; font-size: 1.25rem; }

/* KPI tiles (template 1 building block) */
.tile-row { display: flex; gap: 1rem; flex-wrap: wrap; }
.tile {
  flex: 1 1 200px; background: var(--paper);
  border: 1px solid var(--border-2); border-radius: var(--radius);
  padding: 1rem 1.25rem;
}
.tile-label { color: var(--muted-1); font-size: 0.8125rem; }
.tile-value { font-size: 1.5rem; font-weight: 700; }