/* =========================================================================
   App shell + utilities
   ========================================================================= */

.app-shell {
  display: grid;
  grid-template-columns: var(--sidebar-width) 1fr;
  min-height: 100vh;
  min-height: 100dvh;
}
.app-shell.is-collapsed { grid-template-columns: var(--sidebar-width-collapsed) 1fr; }

/* -------------------------------------------------------------------------
   Sidebar
   ------------------------------------------------------------------------- */
.app-sidebar {
  position: sticky;
  top: 0;
  height: 100vh;
  height: 100dvh;
  z-index: var(--z-sidebar);
  display: flex;
  flex-direction: column;
  background: var(--sidebar-bg);
  border-right: 1px solid var(--color-border);
  overflow: hidden;
}

.sidebar-brand {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  height: var(--topbar-height);
  padding: 0 var(--space-4);
  border-bottom: 1px solid var(--color-border);
  flex: 0 0 auto;
}
.brand-mark {
  display: grid; place-items: center;
  width: 32px; height: 32px;
  border-radius: var(--radius-sm);
  background: linear-gradient(135deg, var(--color-primary), var(--color-secondary));
  color: #fff;
  box-shadow: var(--shadow-sm);
  flex: 0 0 auto;
}
.brand-text { min-width: 0; }
.brand-name {
  font-size: var(--text-md);
  font-weight: var(--weight-bold);
  letter-spacing: var(--tracking-tight);
  color: var(--color-text);
  line-height: 1.1;
}
.brand-sub {
  font-size: var(--text-2xs);
  color: var(--color-text-subtle);
  letter-spacing: var(--tracking-wide);
}

.sidebar-nav {
  flex: 1 1 auto;
  overflow-y: auto;
  padding: var(--space-4) var(--space-3);
  display: flex;
  flex-direction: column;
  gap: var(--space-1);
}
.nav-section {
  padding: var(--space-4) var(--space-3) var(--space-1);
  font-size: var(--text-2xs);
  font-weight: var(--weight-semibold);
  text-transform: uppercase;
  letter-spacing: var(--tracking-caps);
  color: var(--color-text-subtle);
}
.nav-section:first-child { padding-top: 0; }

.nav-item {
  position: relative;
  display: flex;
  align-items: center;
  gap: var(--space-3);
  padding: var(--space-2) var(--space-3);
  border-radius: var(--radius-md);
  color: var(--sidebar-text);
  font-size: var(--text-base);
  font-weight: var(--weight-medium);
  min-height: 38px;
  transition: background-color var(--duration-fast) var(--ease-out),
              color var(--duration-fast) var(--ease-out);
}
.nav-item:hover { background: var(--color-surface-sunken); color: var(--color-text); }
.nav-item.is-active {
  background: var(--sidebar-active-bg);
  color: var(--sidebar-text-active);
  font-weight: var(--weight-semibold);
}
.nav-item.is-active::before {
  content: "";
  position: absolute; left: calc(var(--space-3) * -1); top: 50%;
  transform: translateY(-50%);
  width: 3px; height: 18px;
  border-radius: 0 3px 3px 0;
  background: var(--color-primary);
}
.nav-label { flex: 1 1 auto; min-width: 0; overflow: hidden; text-overflow: ellipsis; }
.nav-badge { flex: 0 0 auto; }

.sidebar-footer {
  flex: 0 0 auto;
  padding: var(--space-3);
  border-top: 1px solid var(--color-border);
}
.sidebar-status {
  display: flex; align-items: center; gap: var(--space-2);
  padding: var(--space-2) var(--space-3);
  border-radius: var(--radius-md);
  background: var(--color-surface-sunken);
  font-size: var(--text-xs);
  color: var(--color-text-muted);
}
.status-dot {
  width: 7px; height: 7px; border-radius: 50%; flex: 0 0 auto;
  background: var(--color-neutral);
}
.status-dot-ok { background: var(--color-success); box-shadow: 0 0 0 3px var(--color-success-soft); }
.status-dot-warn { background: var(--color-warning); box-shadow: 0 0 0 3px var(--color-warning-soft); }
.status-dot-bad { background: var(--color-danger); box-shadow: 0 0 0 3px var(--color-danger-soft); }

/* Collapsed sidebar */
.is-collapsed .brand-text,
.is-collapsed .nav-label,
.is-collapsed .nav-section,
.is-collapsed .sidebar-status span:not(.status-dot) { display: none; }
.is-collapsed .nav-item { justify-content: center; padding-inline: 0; }
.is-collapsed .sidebar-brand { justify-content: center; padding-inline: 0; }

/* -------------------------------------------------------------------------
   Topbar
   ------------------------------------------------------------------------- */
.app-content { display: flex; flex-direction: column; min-width: 0; }

.app-topbar {
  position: sticky;
  top: 0;
  z-index: var(--z-topbar);
  display: flex;
  align-items: center;
  gap: var(--space-3);
  height: var(--topbar-height);
  padding: 0 var(--space-6);
  background: var(--glass-bg);
  -webkit-backdrop-filter: var(--glass-blur);
  backdrop-filter: var(--glass-blur);
  border-bottom: 1px solid var(--color-border);
}
.topbar-title { min-width: 0; flex: 1 1 auto; }
.topbar-heading {
  font-size: var(--text-lg);
  font-weight: var(--weight-semibold);
  letter-spacing: var(--tracking-tight);
  white-space: nowrap; overflow: hidden; text-overflow: ellipsis;
}
.topbar-crumbs {
  display: flex; align-items: center; gap: var(--space-1);
  font-size: var(--text-xs); color: var(--color-text-subtle);
}
.topbar-actions { display: flex; align-items: center; gap: var(--space-2); flex: 0 0 auto; }

.sidebar-toggle { display: none; }

/* -------------------------------------------------------------------------
   Main
   ------------------------------------------------------------------------- */
.app-main {
  flex: 1 1 auto;
  padding: var(--space-6);
  max-width: var(--content-max);
  width: 100%;
  margin: 0 auto;
}
.app-main-narrow { max-width: 880px; }

.page-header {
  display: flex; align-items: flex-start; justify-content: space-between;
  gap: var(--space-4); flex-wrap: wrap;
  margin-bottom: var(--space-6);
}
.page-title {
  font-size: var(--text-2xl);
  font-weight: var(--weight-bold);
  letter-spacing: var(--tracking-tight);
}
.page-subtitle {
  margin-top: var(--space-1);
  font-size: var(--text-base);
  color: var(--color-text-muted);
  max-width: 68ch;
  line-height: var(--leading-normal);
}
.page-actions { display: flex; gap: var(--space-2); flex-wrap: wrap; flex: 0 0 auto; }

.section { margin-bottom: var(--space-6); }
.section:last-child { margin-bottom: 0; }
.section-header {
  display: flex; align-items: center; justify-content: space-between;
  gap: var(--space-3); margin-bottom: var(--space-3); flex-wrap: wrap;
}
.section-title {
  font-size: var(--text-md);
  font-weight: var(--weight-semibold);
  letter-spacing: var(--tracking-snug);
}
.section-desc { font-size: var(--text-sm); color: var(--color-text-muted); }

/* -------------------------------------------------------------------------
   Auth layout (split screen)
   ------------------------------------------------------------------------- */
.auth-shell {
  display: grid;
  grid-template-columns: 1fr 1fr;
  min-height: 100vh;
  min-height: 100dvh;
}
.auth-aside {
  position: relative;
  display: flex; flex-direction: column; justify-content: space-between;
  padding: var(--space-10);
  color: #fff;
  background:
    radial-gradient(120% 90% at 10% 0%, rgba(96,165,250,0.5) 0%, transparent 55%),
    radial-gradient(100% 80% at 90% 100%, rgba(217,119,6,0.42) 0%, transparent 50%),
    linear-gradient(158deg, #1E3A8A 0%, #172554 52%, #0B1220 100%);
  overflow: hidden;
}
.auth-aside::after {
  content: "";
  position: absolute; inset: 0;
  background-image:
    linear-gradient(rgba(255,255,255,0.045) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255,255,255,0.045) 1px, transparent 1px);
  background-size: 44px 44px;
  mask-image: radial-gradient(80% 70% at 50% 40%, #000 0%, transparent 100%);
  pointer-events: none;
}
.auth-aside > * { position: relative; z-index: 1; }
.auth-brand { display: flex; align-items: center; gap: var(--space-3); }
.auth-brand .brand-name, .auth-brand .brand-sub { color: #fff; }
.auth-brand .brand-sub { opacity: 0.7; }
.auth-headline {
  font-size: var(--text-4xl);
  font-weight: var(--weight-bold);
  letter-spacing: var(--tracking-tight);
  line-height: 1.08;
  max-width: 14ch;
}
.auth-headline .accent {
  background: linear-gradient(120deg, #FBBF24, #FDE68A);
  -webkit-background-clip: text; background-clip: text; color: transparent;
}
.auth-lede {
  margin-top: var(--space-4);
  font-size: var(--text-lg);
  line-height: var(--leading-relaxed);
  opacity: 0.82;
  max-width: 46ch;
}
.auth-points { display: grid; gap: var(--space-3); margin-top: var(--space-8); }
.auth-point {
  display: flex; align-items: flex-start; gap: var(--space-3);
  font-size: var(--text-base); opacity: 0.9;
}
.auth-point-icon {
  display: grid; place-items: center;
  width: 30px; height: 30px; flex: 0 0 auto;
  border-radius: var(--radius-sm);
  background: rgba(255,255,255,0.12);
  border: 1px solid rgba(255,255,255,0.16);
}
.auth-foot { font-size: var(--text-xs); opacity: 0.55; }

.auth-panel {
  display: grid; place-items: center;
  padding: var(--space-8) var(--space-6);
  background: var(--color-bg);
}
.auth-form-wrap { width: min(400px, 100%); }
.auth-title {
  font-size: var(--text-3xl);
  font-weight: var(--weight-bold);
  letter-spacing: var(--tracking-tight);
}
.auth-sub {
  margin-top: var(--space-2);
  color: var(--color-text-muted);
  font-size: var(--text-md);
}
.auth-form { margin-top: var(--space-8); }
.auth-alt {
  margin-top: var(--space-6);
  text-align: center;
  font-size: var(--text-sm);
  color: var(--color-text-muted);
}

/* -------------------------------------------------------------------------
   Grids
   ------------------------------------------------------------------------- */
.grid { display: grid; gap: var(--space-4); }
.grid-2 { grid-template-columns: repeat(auto-fit, minmax(300px, 1fr)); }
.grid-3 { grid-template-columns: repeat(auto-fit, minmax(260px, 1fr)); }
.grid-4 { grid-template-columns: repeat(auto-fit, minmax(210px, 1fr)); }
.grid-main-aside { grid-template-columns: minmax(0, 2fr) minmax(280px, 1fr); }
.grid-aside-main { grid-template-columns: minmax(260px, 1fr) minmax(0, 3fr); }

/* -------------------------------------------------------------------------
   Utilities
   ------------------------------------------------------------------------- */
.flex { display: flex; }
.flex-col { flex-direction: column; }
.items-center { align-items: center; }
.items-start { align-items: flex-start; }
.items-end { align-items: flex-end; }
.justify-between { justify-content: space-between; }
.justify-center { justify-content: center; }
.justify-end { justify-content: flex-end; }
.flex-wrap { flex-wrap: wrap; }
.flex-1 { flex: 1 1 auto; min-width: 0; }
.gap-1 { gap: var(--space-1); }
.gap-2 { gap: var(--space-2); }
.gap-3 { gap: var(--space-3); }
.gap-4 { gap: var(--space-4); }
.gap-5 { gap: var(--space-5); }
.gap-6 { gap: var(--space-6); }

.mt-0 { margin-top: 0; }
.mt-1 { margin-top: var(--space-1); }
.mt-2 { margin-top: var(--space-2); }
.mt-3 { margin-top: var(--space-3); }
.mt-4 { margin-top: var(--space-4); }
.mt-5 { margin-top: var(--space-5); }
.mt-6 { margin-top: var(--space-6); }
.mt-8 { margin-top: var(--space-8); }
.mb-0 { margin-bottom: 0; }
.mb-2 { margin-bottom: var(--space-2); }
.mb-3 { margin-bottom: var(--space-3); }
.mb-4 { margin-bottom: var(--space-4); }
.mb-6 { margin-bottom: var(--space-6); }

.p-0 { padding: 0; }
.p-3 { padding: var(--space-3); }
.p-4 { padding: var(--space-4); }
.p-5 { padding: var(--space-5); }

.text-xs { font-size: var(--text-xs); }
.text-sm { font-size: var(--text-sm); }
.text-md { font-size: var(--text-md); }
.text-lg { font-size: var(--text-lg); }
.text-muted { color: var(--color-text-muted); }
.text-subtle { color: var(--color-text-subtle); }
.text-success { color: var(--color-success); }
.text-warning { color: var(--color-warning); }
.text-danger { color: var(--color-danger); }
.text-primary { color: var(--color-primary); }
.text-center { text-align: center; }
.text-right { text-align: right; }
.text-mono { font-family: var(--font-mono); font-variant-numeric: tabular-nums; }
.font-medium { font-weight: var(--weight-medium); }
.font-semibold { font-weight: var(--weight-semibold); }
.font-bold { font-weight: var(--weight-bold); }
.uppercase-label {
  font-size: var(--text-2xs); font-weight: var(--weight-semibold);
  text-transform: uppercase; letter-spacing: var(--tracking-caps);
  color: var(--color-text-subtle);
}
.truncate { overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.break-all { word-break: break-all; }
.nowrap { white-space: nowrap; }

.w-full { width: 100%; }
.hidden { display: none !important; }
.relative { position: relative; }
.cursor-pointer { cursor: pointer; }

/* Entrance animation for grids of cards */
@keyframes rise-in {
  from { opacity: 0; transform: translateY(10px) scale(0.985); }
  to   { opacity: 1; transform: translateY(0) scale(1); }
}
.animate-in > * {
  animation: rise-in var(--duration-slow) var(--ease-out) backwards;
}
.animate-in > *:nth-child(1) { animation-delay: 0ms; }
.animate-in > *:nth-child(2) { animation-delay: 45ms; }
.animate-in > *:nth-child(3) { animation-delay: 90ms; }
.animate-in > *:nth-child(4) { animation-delay: 135ms; }
.animate-in > *:nth-child(5) { animation-delay: 180ms; }
.animate-in > *:nth-child(6) { animation-delay: 225ms; }
.animate-in > *:nth-child(n+7) { animation-delay: 270ms; }

/* -------------------------------------------------------------------------
   Responsive
   ------------------------------------------------------------------------- */
@media (max-width: 1180px) {
  .grid-main-aside, .grid-aside-main { grid-template-columns: 1fr; }
}

@media (max-width: 1024px) {
  .auth-shell { grid-template-columns: 1fr; }
  .auth-aside { display: none; }
  .auth-panel { padding: var(--space-6) var(--space-4); }
}

@media (max-width: 900px) {
  .app-shell { grid-template-columns: 1fr; }
  .app-sidebar {
    position: fixed;
    inset: 0 auto 0 0;
    width: var(--sidebar-width);
    transform: translateX(-100%);
    transition: transform var(--duration-base) var(--ease-out);
    box-shadow: var(--shadow-xl);
  }
  .app-shell.nav-open .app-sidebar { transform: translateX(0); }
  .app-shell.nav-open::after {
    content: "";
    position: fixed; inset: 0;
    z-index: calc(var(--z-sidebar) - 1);
    background: var(--color-overlay);
    -webkit-backdrop-filter: blur(2px);
    backdrop-filter: blur(2px);
  }
  .sidebar-toggle { display: inline-flex; }
  .app-topbar { padding: 0 var(--space-4); }
  .app-main { padding: var(--space-4); }
  .toast-stack { right: var(--space-3); left: var(--space-3); width: auto; }
}

@media (max-width: 640px) {
  .page-header { flex-direction: column; align-items: stretch; }
  .page-actions { width: 100%; }
  .page-actions .btn { flex: 1 1 auto; }
  .stat-grid { grid-template-columns: repeat(auto-fit, minmax(150px, 1fr)); }
  .modal { width: 100%; }
  .topbar-crumbs { display: none; }
}