/* ══════════════════════════════════════════
   App Shell — topbar, nav tabs, content area
══════════════════════════════════════════ */

/* ── App wrapper ── */
#app {
  display: none;
  flex-direction: column;
  min-height: 100dvh;
}

/* ── Topbar ── */
.topbar {
  position: sticky; top: 0; z-index: 100;
  height: 3.5rem;
  background: rgba(8,8,8,.92);
  backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--b1);
  display: flex; align-items: center;
  padding: 0 1.25rem; gap: 0.75rem;
}

.topbar-brand   { display: flex; align-items: center; gap: 0.5rem; flex-shrink: 0; }
.topbar-icon    {
  width: 1.75rem; height: 1.75rem;
  background: linear-gradient(135deg, var(--ac), var(--ac2));
  border-radius: 0.4375rem;
  display: flex; align-items: center; justify-content: center;
}
.topbar-icon svg  { width: 0.875rem; height: 0.875rem; }
.topbar-name      { font-size: 0.875rem; font-weight: 700; letter-spacing: -.2px; }
.topbar-name span { color: var(--ac); }
.topbar-pill {
  padding: 0.1875rem 0.625rem;
  border-radius: 99px;
  background: rgba(99,102,241,.12);
  border: 1px solid rgba(99,102,241,.2);
  font-size: 0.75rem; font-weight: 600; color: var(--ac);
}
.topbar-right { margin-left: auto; display: flex; align-items: center; gap: 0.625rem; }
.topbar-clock { font-size: 0.8125rem; color: var(--t2); font-variant-numeric: tabular-nums; }

.notif-btn {
  position: relative;
  padding: 0.4375rem;
  border-radius: var(--rxs);
  background: none; border: none; color: var(--t3);
  cursor: pointer; display: flex;
  transition: color var(--tr), background var(--tr);
}
.notif-btn:hover  { color: var(--t1); background: var(--s2); }
.notif-btn svg    { width: 1.125rem; height: 1.125rem; }
.notif-dot {
  position: absolute; top: 0.375rem; right: 0.375rem;
  width: 0.4375rem; height: 0.4375rem; border-radius: 50%;
  background: var(--red);
  border: 2px solid var(--bg);
}

.user-pill {
  display: flex; align-items: center; gap: 0.4375rem;
  padding: 0.25rem 0.625rem 0.25rem 0.25rem;
  border-radius: 99px;
  background: var(--s2); border: 1px solid var(--b1);
  cursor: pointer;
  transition: background var(--tr), border-color var(--tr);
}
.user-pill:hover { background: var(--s3); border-color: var(--b2); }
.user-avatar {
  width: 1.625rem; height: 1.625rem; border-radius: 50%;
  background: linear-gradient(135deg, var(--ac), var(--ac2));
  font-size: 0.6875rem; font-weight: 700; color: white;
  display: flex; align-items: center; justify-content: center;
}
.user-name { font-size: 0.78125rem; font-weight: 600; }

.logout-btn {
  padding: 0.375rem 0.75rem;
  border-radius: var(--rxs);
  background: none; border: 1px solid var(--b1); color: var(--t3);
  font-size: 0.75rem; font-weight: 500; cursor: pointer;
  transition: color var(--tr), background var(--tr), border-color var(--tr);
}
.logout-btn:hover { color: var(--t1); background: var(--s2); border-color: var(--b2); }

/* ── Navigation tabs ── */
.nav-tabs {
  display: flex; align-items: center; gap: 0.125rem;
  padding: 0 1.25rem;
  border-bottom: 1px solid var(--b1);
  background: var(--bg);
  overflow-x: auto; scrollbar-width: none;
}
.nav-tabs::-webkit-scrollbar { display: none; }

.nav-tab {
  display: flex; align-items: center; gap: 0.375rem;
  padding: 0.625rem 0.875rem;
  font-size: 0.84375rem; font-weight: 500; color: var(--t3);
  cursor: pointer; white-space: nowrap;
  border: none; background: none;
  border-bottom: 2px solid transparent; margin-bottom: -1px;
  transition: color var(--tr), border-color var(--tr);
  touch-action: manipulation;
}
.nav-tab:hover        { color: var(--t2); }
.nav-tab.active       { color: var(--t1); border-bottom-color: var(--ac); }
.nav-tab svg          { width: 0.9375rem; height: 0.9375rem; flex-shrink: 0; }
.nav-badge {
  font-size: 0.65625rem; font-weight: 700;
  padding: 0.0625rem 0.3125rem; border-radius: 99px;
  background: var(--red); color: white; line-height: 1.4;
}

/* ── Content area ── */
.content-area {
  flex: 1;
  padding: 1.75rem 1.5rem;
  max-width: 75rem;
  margin: 0 auto;
  width: 100%;
}

/* ── View enter animation ── */
.view-enter { animation: vIn .25s ease forwards; }
@keyframes vIn {
  from { opacity: 0; transform: translateY(0.375rem); }
  to   { opacity: 1; transform: translateY(0);   }
}

/* ── Admin info banner ── */
.admin-banner {
  background: rgba(99,102,241,.08);
  border: 1px solid rgba(99,102,241,.18);
  border-radius: var(--rsm);
  padding: 0.5625rem 0.8125rem;
  font-size: 0.78125rem; color: var(--ac);
  display: flex; align-items: center; gap: 0.4375rem;
  margin-bottom: 1.125rem;
}
.admin-banner svg  { width: 0.875rem; height: 0.875rem; flex-shrink: 0; }
.admin-banner code { background: rgba(99,102,241,.15); padding: 0.0625rem 0.3125rem; border-radius: 0.25rem; font-size: 0.6875rem; }

/* ── Burger button ── */
.burger-btn {
  display: none;
  width: 2.5rem; height: 2.5rem; flex-shrink: 0;
  border-radius: var(--rxs);
  background: none; border: none; color: var(--t2);
  cursor: pointer; align-items: center; justify-content: center;
  transition: color var(--tr), background var(--tr);
}
.burger-btn:hover { color: var(--t1); background: var(--s2); }
.burger-icon { display: flex; flex-direction: column; gap: 0.3125rem; width: 1.25rem; pointer-events: none; }
.burger-icon span {
  display: block; height: 2px; background: currentColor; border-radius: 2px;
  transform-origin: center;
  transition: transform .25s cubic-bezier(.4,0,.2,1), opacity .2s ease, transform .25s cubic-bezier(.4,0,.2,1);
}
.burger-btn.open .burger-icon span:nth-child(1) { transform: translateY(0.4375rem) rotate(45deg); }
.burger-btn.open .burger-icon span:nth-child(2) { opacity: 0; transform: scaleX(0); }
.burger-btn.open .burger-icon span:nth-child(3) { transform: translateY(-0.4375rem) rotate(-45deg); }

/* ── Drawer backdrop ── */
.drawer-overlay {
  position: fixed; inset: 0; z-index: 150;
  background: transparent;
  pointer-events: none;
  transition: background .25s ease, backdrop-filter .25s ease;
}
.drawer-overlay.open {
  background: rgba(0,0,0,.72);
  backdrop-filter: blur(4px);
  pointer-events: all;
}

/* ── Navigation drawer ── */
.drawer {
  position: fixed; top: 0; left: 0; bottom: 0;
  width: min(18.75rem, 82vw);
  z-index: 160;
  background: var(--s1);
  border-right: 1px solid var(--b1);
  display: flex; flex-direction: column;
  transform: translateX(-100%);
  transition: transform .28s cubic-bezier(.4,0,.2,1);
  box-shadow: 8px 0 48px rgba(0,0,0,.6);
}
.drawer.open { transform: translateX(0); }

.drawer-header {
  padding: 1.25rem 1rem 1rem;
  border-bottom: 1px solid var(--b1);
  display: flex; flex-direction: column; gap: 0.875rem;
  flex-shrink: 0;
}
.drawer-brand {
  display: flex; align-items: center; gap: 0.5rem;
}
.drawer-brand-icon {
  width: 1.75rem; height: 1.75rem; flex-shrink: 0;
  background: linear-gradient(135deg, var(--ac), var(--ac2));
  border-radius: 0.4375rem;
  display: flex; align-items: center; justify-content: center;
}
.drawer-brand-icon svg   { width: 0.875rem; height: 0.875rem; }
.drawer-brand-name       { font-size: 0.875rem; font-weight: 700; letter-spacing: -.2px; }
.drawer-brand-name span  { color: var(--ac); }

.drawer-user-row {
  display: flex; align-items: center; gap: 0.6875rem;
  padding: 0.6875rem 0.8125rem;
  background: var(--s2); border: 1px solid var(--b1);
  border-radius: var(--rsm);
}
.drawer-avatar {
  width: 2.25rem; height: 2.25rem; border-radius: 50%; flex-shrink: 0;
  background: linear-gradient(135deg, var(--ac), var(--ac2));
  font-size: 0.8125rem; font-weight: 700; color: white;
  display: flex; align-items: center; justify-content: center;
}
.drawer-user-name { font-size: 0.84375rem; font-weight: 600; }

/* ── Drawer nav items ── */
.drawer-nav {
  flex: 1; overflow-y: auto; scrollbar-width: none;
  padding: 0.625rem 0.5rem;
  display: flex; flex-direction: column; gap: 0.125rem;
}
.drawer-nav::-webkit-scrollbar { display: none; }

.drawer-item {
  display: flex; align-items: center; gap: 0.8125rem;
  padding: 0.8125rem 0.875rem; width: 100%;
  border-radius: var(--rsm);
  background: none; border: none;
  font-size: 0.9375rem; font-weight: 500; color: var(--t2);
  cursor: pointer; text-align: left;
  transition: color var(--tr), background var(--tr);
  touch-action: manipulation;
}
.drawer-item svg         { width: 1.125rem; height: 1.125rem; flex-shrink: 0; color: var(--t3); transition: color var(--tr); }
.drawer-item .nav-badge  { margin-left: auto; }
.drawer-item:hover       { color: var(--t1); background: var(--s2); }
.drawer-item:hover svg   { color: var(--t2); }
.drawer-item.active      { color: var(--ac); background: rgba(99,102,241,.1); font-weight: 600; }
.drawer-item.active svg  { color: var(--ac); }

/* ── Drawer footer — sign out, visually separated ── */
.drawer-footer {
  padding: 0.5rem 0.5rem max(1.25rem, env(safe-area-inset-bottom));
  border-top: 1px solid var(--b1);
  flex-shrink: 0;
}
.drawer-signout {
  display: flex; align-items: center; gap: 0.8125rem;
  padding: 0.8125rem 0.875rem; width: 100%;
  border-radius: var(--rsm);
  background: none; border: none;
  font-size: 0.9375rem; font-weight: 500; color: var(--t3);
  cursor: pointer;
  transition: color var(--tr), background var(--tr);
  touch-action: manipulation;
}
.drawer-signout svg   { width: 1.125rem; height: 1.125rem; flex-shrink: 0; }
.drawer-signout:hover { color: var(--red); background: rgba(239,68,68,.08); }

/* ── Responsive overrides ── */
.nav-tabs   { display: none; }
.burger-btn { display: flex; }
.user-pill  { display: none; }
.logout-btn { display: none; }
@media (max-width: 600px) {
  .content-area { padding: 0.875rem; }
  .topbar       { padding: 0 0.875rem; gap: 0.5rem; }
  .topbar-clock { display: none; }
}