/* ============================================================
   layout.css — app shell: boot, topbar, sidebar, main.
   ============================================================ */

/* ----- Boot screen ----- */
.boot-screen {
  position: fixed; inset: 0;
  display: flex; flex-direction: column; align-items: center; justify-content: center;
  gap: var(--sp-6);
  background: var(--bg-0);
  z-index: 9999;
}
.boot-mark {
  font-weight: 700; letter-spacing: 0.2em;
  color: var(--text-2);
  font-size: var(--fs-lg);
}
.boot-spinner {
  width: 28px; height: 28px;
  border: 2px solid var(--border-1);
  border-top-color: var(--brand-red);
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
}
@keyframes spin { to { transform: rotate(360deg); } }

/* ----- Shell grid -----
   Locked to viewport height: only `.app-main` scrolls so topbar +
   sidebar stay anchored as you scroll long lists. */
.app-shell {
  display: grid;
  grid-template-columns: 240px 1fr;
  grid-template-rows: 56px 1fr;
  grid-template-areas:
    "topbar topbar"
    "sidebar main";
  height: 100vh;
  overflow: hidden;
}
.app-shell.unauth {
  grid-template-columns: 1fr;
  grid-template-rows: 1fr;
  grid-template-areas: "main";
}

/* ----- Topbar ----- */
.app-topbar {
  grid-area: topbar;
  display: flex; align-items: center;
  gap: var(--sp-4);
  padding: 0 var(--sp-6);
  background: var(--bg-1);
  border-bottom: 1px solid var(--border-1);
  box-shadow: var(--shadow-1);
  position: sticky; top: 0; z-index: 50;
}
.topbar-brand { display: flex; align-items: center; gap: var(--sp-3); }
.brand-bar {
  display: inline-block;
  width: 4px; height: 20px;
  background: var(--brand-red);
  border-radius: var(--r-1);
  box-shadow: 0 0 12px color-mix(in srgb, var(--brand-red) 50%, transparent);
}
.brand-mark {
  font-weight: 800; letter-spacing: 0.18em;
  font-size: var(--fs-md);
  color: var(--text-1);
}
.brand-sub {
  font-size: var(--fs-xs);
  text-transform: uppercase;
  letter-spacing: 0.16em;
  color: var(--brand-red);
  font-weight: 700;
}
.topbar-meta { display: flex; gap: var(--sp-2); margin-left: var(--sp-6); }
.meta-chip {
  display: inline-flex; align-items: center; gap: 6px;
  height: 26px; padding: 0 10px;
  font-size: var(--fs-xs);
  font-weight: 600;
  background: var(--bg-2);
  color: var(--text-2);
  border: 1px solid var(--border-1);
  border-radius: var(--r-pill);
  transition: background-color var(--dur-fast) var(--ease-out);
}
.meta-chip:hover { background: var(--bg-hover); }
.meta-chip i { font-size: 12px; opacity: 0.8; }
.meta-chip.env-prod { color: var(--success); background: var(--success-bg); border-color: transparent; }
.meta-chip.env-dev  { color: var(--warning); background: var(--warning-bg); border-color: transparent; }

.topbar-user {
  margin-left: auto;
  display: flex; align-items: center; gap: var(--sp-3);
}
.user-email { color: var(--text-2); font-size: var(--fs-sm); }
.icon-btn {
  width: 32px; height: 32px;
  display: inline-flex; align-items: center; justify-content: center;
  background: var(--bg-2);
  color: var(--text-2);
  border: 1px solid var(--border-1);
  border-radius: var(--r-2);
  cursor: pointer;
  font-size: 15px;
}
.icon-btn:hover {
  background: var(--bg-hover);
  color: var(--text-1);
  border-color: var(--border-2);
  transform: translateY(-1px);
  box-shadow: var(--shadow-1);
}
.icon-btn:active { transform: translateY(0); }

/* ----- Sidebar ----- */
.app-sidebar {
  grid-area: sidebar;
  background: var(--bg-sidebar);
  border-right: 1px solid var(--border-1);
  display: flex; flex-direction: column;
  height: 100%;
  overflow-y: auto;
}
.sidebar-nav {
  padding: var(--sp-5) var(--sp-3);
  display: flex; flex-direction: column; gap: var(--sp-5);
  flex: 1;
}
.nav-group { display: flex; flex-direction: column; gap: 2px; }
.nav-group-label {
  margin: 0 var(--sp-3) var(--sp-2);
  font-size: 10px;
  text-transform: uppercase;
  letter-spacing: 0.14em;
  font-weight: 700;
  color: var(--text-mute);
}
.nav-item {
  display: flex; align-items: center; gap: var(--sp-3);
  padding: 8px var(--sp-3);
  border-radius: var(--r-2);
  color: var(--text-2);
  font-size: var(--fs-md);
  font-weight: 500;
  text-decoration: none;
  position: relative;
  transition: background-color var(--dur-fast) var(--ease-out),
              color var(--dur-fast) var(--ease-out),
              transform var(--dur-fast) var(--ease-out);
}
.nav-item i { font-size: 16px; opacity: 0.85; width: 20px; text-align: center; }
.nav-item:hover {
  background: var(--bg-hover);
  color: var(--text-1);
  text-decoration: none;
  transform: translateX(2px);
}
.nav-item.active {
  background: linear-gradient(90deg, var(--brand-red-bg) 0%, transparent 100%);
  color: var(--text-1);
  font-weight: 600;
}
.nav-item.active::before {
  content: ""; position: absolute; left: -8px; top: 6px; bottom: 6px; width: 3px;
  background: var(--brand-red);
  border-radius: var(--r-1);
  box-shadow: 0 0 12px color-mix(in srgb, var(--brand-red) 60%, transparent);
}

.sidebar-footer {
  padding: var(--sp-3) var(--sp-4);
  border-top: 1px solid var(--border-1);
  background: var(--bg-2);
}
.footer-line { font-size: var(--fs-xs); color: var(--text-2); margin: 0; }
.footer-line.muted { color: var(--text-mute); margin-top: 2px; }

/* ----- Main ----- */
.app-main {
  grid-area: main;
  min-width: 0;
  background: var(--bg-0);
  overflow-y: auto;   /* the ONLY scrolling area in the shell */
  height: 100%;
}
.app-content {
  /* Fill the entire main area, only the padding gives breathing room. */
  padding: var(--sp-6) var(--sp-6);
  width: 100%;
}
/* On really wide screens (>=2200px) add slightly more horizontal padding
   so text rows don't span an awkwardly long line. Still no max-width. */
@media (min-width: 2200px) {
  .app-content { padding-left: var(--sp-10); padding-right: var(--sp-10); }
}

/* When unauth, hide chrome and center content. */
.app-shell.unauth .app-topbar,
.app-shell.unauth .app-sidebar { display: none !important; }
.app-shell.unauth .app-main { display: flex; align-items: center; justify-content: center; min-height: 100vh; background: var(--bg-tint); }
.app-shell.unauth .app-content { padding: 0; width: auto; max-width: none; }

/* Responsive: collapse sidebar below 900px */
@media (max-width: 900px) {
  .app-shell {
    grid-template-columns: 1fr;
    grid-template-areas:
      "topbar"
      "main";
  }
  .app-sidebar { display: none; }
  .app-content { padding: var(--sp-4); width: 100%; }
}

/* Sortable table column headers — clickable + arrow indicator */
.tbl thead th[data-sort] {
  cursor: pointer;
  user-select: none;
}
.tbl thead th[data-sort]:hover { color: var(--text-1); }
.tbl thead th[data-sort]::after {
  content: "⇅";
  display: inline-block;
  margin-left: 6px;
  opacity: 0.35;
  font-size: 10px;
}
.tbl thead th[data-sort].sort-asc::after  { content: "▲"; opacity: 1; color: var(--brand-red); }
.tbl thead th[data-sort].sort-desc::after { content: "▼"; opacity: 1; color: var(--brand-red); }