/* App shell — sidebar + main, shared by all gated product pages.
   Locked from FRONTEND_SPEC.md §3.2. */

body.app-shell {
  margin: 0;
  min-height: 100vh;
  background: var(--bg-page);
  color: var(--text-primary);
  font-family: var(--font-sans);
  -webkit-font-smoothing: antialiased;
}

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

/* ─── sidebar ────────────────────────────────────────────────────── */
aside.sidebar {
  width: 190px;
  flex-shrink: 0;
  background: var(--bg-sidebar);
  border-right: 0.5px solid var(--bg-inset);
  padding: 18px 12px;
  display: flex;
  flex-direction: column;
}
.sidebar-back {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 6px 10px 14px;
  font-size: 11.5px;
  color: var(--text-secondary);
  letter-spacing: .3px;
  text-decoration: none;
  transition: color .15s ease;
}
.sidebar-back:hover { color: var(--gold); }
.sidebar-back i { font-size: 13px; }

.sidebar-brand {
  padding: 4px 10px 20px;
  display: block;
}
.sidebar-brand .mark {
  font-size: 18px;
  font-weight: 700;
  color: var(--gold);
  letter-spacing: .5px;
  display: block;
  line-height: 1.1;
}
.sidebar-brand .suffix {
  font-size: 11.5px;
  font-weight: 600;
  color: var(--text-secondary);
  letter-spacing: 1.5px;
  text-transform: uppercase;
  display: block;
}

.s-nav {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 9px 14px;
  color: var(--text-secondary);
  font-weight: 500;
  font-size: 13.5px;
  border-radius: 8px;
  cursor: pointer;
  letter-spacing: .2px;
  transition: color .12s ease, background .12s ease;
}
.s-nav i { font-size: 18px; }
.s-nav:hover {
  color: var(--text-primary);
  background: var(--bg-elevated);
}
.s-nav.on {
  color: var(--gold);
  background: var(--bg-inset);
  border-left: 2px solid var(--gold);
  border-radius: 0;
  padding-left: 12px;
}
.sidebar-spacer { flex: 1; }

/* ─── main column ────────────────────────────────────────────────── */
main.col {
  flex: 1;
  padding: 24px 28px;
  min-width: 0;
}

/* ─── header strip ───────────────────────────────────────────────── */
.page-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 22px;
}
.page-title {
  font-size: 26px;
  font-weight: 700;
  color: var(--gold);
  letter-spacing: .3px;
}
.account-strip {
  display: flex;
  align-items: center;
  gap: 14px;
}
.credit-block { text-align: right; }
.credit-block .balance {
  font-size: 19px;
  font-weight: 700;
  color: var(--gold);
  line-height: 1.1;
}
.credit-block .meta {
  font-size: 11px;
  color: var(--text-secondary);
  letter-spacing: .4px;
}

/* ─── panel (generic card in main) ───────────────────────────────── */
.panel {
  background: var(--bg-card);
  border: 0.5px solid var(--border);
  border-radius: var(--radius-card);
  padding: 20px 22px;
  margin-bottom: 18px;
}
.panel-title {
  font-size: 15px;
  font-weight: 700;
  color: var(--gold);
  margin: 0 0 14px;
  letter-spacing: .3px;
}
.panel-eyebrow {
  font-size: 11.5px;
  color: var(--text-tertiary);
  font-family: var(--font-mono);
}

/* ─── responsive ─────────────────────────────────────────────────── */
@media (max-width: 720px) {
  .shell { flex-direction: column; }
  aside.sidebar {
    width: 100%;
    flex-direction: row;
    padding: 12px;
    overflow-x: auto;
    border-right: none;
    border-bottom: 0.5px solid var(--bg-inset);
  }
  .sidebar-brand { padding: 4px 10px; }
  .sidebar-spacer { display: none; }
  main.col { padding: 18px; }
  .page-head { flex-wrap: wrap; gap: 14px; }
}