/* ============================================================
   Shell: sidebar + topbar + page container
   ============================================================ */
.sb-app {
  display: grid;
  grid-template-columns: 232px 1fr;
  grid-template-rows: 52px 1fr;
  height: 100vh;
}

/* --- sidebar --- */
.sb-sidebar {
  grid-row: 1 / 3;
  background: var(--panel);
  border-right: 1px solid var(--border);
  display: flex; flex-direction: column;
  padding: 14px 10px 12px;
}
.sb-sidebar__brand { padding: 4px 8px 14px; }
.sb-sidebar__brand img { height: 32px; width: auto; display: block; }
[data-theme="dark"] .sb-sidebar__brand img { filter: brightness(0) invert(1); }

.sb-nav { display: flex; flex-direction: column; gap: 2px; margin-top: 6px; }
.sb-nav__group { font-size: 10px; text-transform: uppercase; letter-spacing: .1em;
  color: var(--text-faint); padding: 12px 10px 6px; }
.sb-nav__item {
  display: flex; align-items: center; gap: 10px;
  padding: 7px 10px; border-radius: var(--radius);
  color: var(--text-soft); font-size: 13px; font-weight: 500;
  border-left: 2px solid transparent;
}
.sb-nav__item:hover { background: var(--sb-blue-100); color: var(--sb-blue-700); }
.sb-nav__item--active {
  background: var(--sb-blue-100); color: var(--sb-blue-700);
  border-left-color: var(--sb-red); font-weight: 600;
}
.sb-nav__kbd {
  margin-left: auto; font-family: var(--font-mono); font-size: 10px;
  color: var(--text-faint); border: 1px solid var(--border); border-radius: 3px;
  padding: 1px 5px;
}

.sb-user { margin-top: auto; padding: 10px; border-top: 1px solid var(--border); }
.sb-user__name { font-weight: 600; color: var(--text); }
.sb-user__role { font-family: var(--font-mono); font-size: 10px; color: var(--sb-red);
  text-transform: uppercase; letter-spacing: .08em; }

/* --- topbar --- */
.sb-topbar {
  grid-column: 2; grid-row: 1;
  display: flex; align-items: center; gap: 18px;
  padding: 0 20px; background: var(--panel);
  border-bottom: 1px solid var(--border);
}
.sb-topbar__title {
  font-family: var(--font-display); font-size: 15px; font-weight: 700;
  color: var(--sb-blue-700);
}
.sb-ticker { display: flex; gap: 22px; margin-left: 12px; }
.sb-ticker__item { display: flex; align-items: baseline; gap: 6px; font-size: 12px; }
.sb-ticker__label { color: var(--text-mute); text-transform: uppercase;
  letter-spacing: .06em; font-size: 10px; font-weight: 700; }
.sb-ticker__val { font-family: var(--font-mono); font-weight: 600; color: var(--text); }
.sb-ticker__delta--pos { color: var(--pos); font-family: var(--font-mono); font-size: 11px; }
.sb-ticker__delta--neg { color: var(--neg); font-family: var(--font-mono); font-size: 11px; }

.sb-topbar__actions { margin-left: auto; display: flex; gap: 10px; align-items: center; }
.sb-iconbtn {
  width: 30px; height: 30px; border-radius: var(--radius);
  border: 1px solid var(--border); background: var(--panel);
  display: inline-flex; align-items: center; justify-content: center;
  color: var(--text-soft); cursor: pointer;
}
.sb-iconbtn:hover { border-color: var(--border-strong); color: var(--sb-blue-700); }

/* --- nav SVG icons --- */
.sb-nav__item svg        { flex-shrink: 0; display: block; }
.sb-nav__item--active svg { color: var(--sb-blue-700); }

/* --- topbar theme-toggle icons --- */
/* Light mode: show moon (click → switch to dark). Dark mode: show sun (click → switch to light). */
.sb-theme-icon           { display: inline-flex; align-items: center; }
.sb-theme-icon--sun      { display: none; }
[data-theme="dark"]  .sb-theme-icon--sun  { display: inline-flex; }
[data-theme="dark"]  .sb-theme-icon--moon { display: none; }

/* --- page container --- */
.sb-page {
  grid-column: 2; grid-row: 2;
  overflow: auto; padding: 22px 24px 40px;
}
.sb-page__head { display: flex; align-items: flex-end; gap: 20px; margin-bottom: 16px; }
.sb-page__title { font-size: 22px; font-weight: 800; }
.sb-page__sub   { color: var(--text-mute); font-size: 12px; }