/* ============================================================
   DAFTAR MAJED — Layout
   App Shell: Sidebar + Topbar + Content
   Mobile: Bottom nav + Full content
   ============================================================ */

/* ── App Shell ── */
#app {
  min-height: 100vh;
  display: flex;
  flex-direction: column;
}

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

/* ── Sidebar ── */
.sidebar {
  width: var(--sidebar-width);
  min-height: 100vh;
  background: var(--sidebar-bg);
  border-left: 1px solid var(--sidebar-border);
  display: flex;
  flex-direction: column;
  position: fixed;
  right: 0;
  top: 0;
  bottom: 0;
  z-index: var(--z-above);
  transition: width var(--transition-base), transform var(--transition-base);
  will-change: transform;
  overflow: hidden;
}

.sidebar.collapsed {
  width: var(--sidebar-collapsed);
}

/* ── Main Content ── */
.main-content {
  flex: 1;
  margin-right: var(--sidebar-width);
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  transition: margin-right var(--transition-base);
}

.main-content.sidebar-collapsed {
  margin-right: var(--sidebar-collapsed);
}

/* ── Topbar ── */
.topbar {
  height: var(--topbar-height);
  background: var(--topbar-bg);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--color-border-light);
  position: sticky;
  top: 0;
  z-index: var(--z-above);
  display: flex;
  align-items: center;
  padding: 0 var(--space-6);
  gap: var(--space-4);
}

/* ── Page Content ── */
.page-content {
  flex: 1;
  padding: var(--space-6);
  max-width: var(--content-max);
  width: 100%;
}

.page-content.centered {
  margin: 0 auto;
}

/* ── Page Header ── */
.page-header {
  margin-bottom: var(--space-6);
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: var(--space-4);
  flex-wrap: wrap;
}

/* ── Grid Utilities ── */
.grid { display: grid; }
.grid-2 { grid-template-columns: repeat(2, 1fr); }
.grid-3 { grid-template-columns: repeat(3, 1fr); }
.grid-4 { grid-template-columns: repeat(4, 1fr); }
.grid-auto { grid-template-columns: repeat(auto-fill, minmax(280px, 1fr)); }
.grid-auto-sm { grid-template-columns: repeat(auto-fill, minmax(200px, 1fr)); }
.gap-2 { gap: var(--space-2); }
.gap-3 { gap: var(--space-3); }
.gap-4 { gap: var(--space-4); }
.gap-6 { gap: var(--space-6); }
.gap-8 { gap: var(--space-8); }

/* ── Flex Utilities ── */
.flex { display: flex; }
.flex-col { flex-direction: column; }
.items-center { align-items: center; }
.items-start { align-items: flex-start; }
.justify-center { justify-content: center; }
.justify-between { justify-content: space-between; }
.justify-end { justify-content: flex-end; }
.flex-1 { flex: 1; }
.flex-wrap { flex-wrap: wrap; }

/* ── Spacing Utilities ── */
.p-2  { padding: var(--space-2); }
.p-3  { padding: var(--space-3); }
.p-4  { padding: var(--space-4); }
.p-6  { padding: var(--space-6); }
.p-8  { padding: var(--space-8); }
.px-4 { padding-inline: var(--space-4); }
.px-6 { padding-inline: var(--space-6); }
.py-3 { padding-block: var(--space-3); }
.py-4 { padding-block: var(--space-4); }

.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); }
.mb-8 { margin-bottom: var(--space-8); }
.mt-4 { margin-top: var(--space-4); }
.mt-6 { margin-top: var(--space-6); }
.ms-auto { margin-inline-start: auto; }
.me-auto { margin-inline-end: auto; }

/* ── Width Utilities ── */
.w-full   { width: 100%; }
.w-auto   { width: auto; }
.max-w-sm { max-width: 400px; }
.max-w-md { max-width: 600px; }
.max-w-lg { max-width: 800px; }
.mx-auto  { margin-inline: auto; }

/* ── Visibility ── */
.hidden   { display: none !important; }
.sr-only  {
  position: absolute;
  width: 1px;
  height: 1px;
  overflow: hidden;
  clip: rect(0,0,0,0);
  white-space: nowrap;
}

/* ── Position ── */
.relative { position: relative; }
.absolute { position: absolute; }

/* ── Overlay ── */
.overlay {
  position: fixed;
  inset: 0;
  background: rgba(7, 13, 26, 0.5);
  backdrop-filter: blur(4px);
  -webkit-backdrop-filter: blur(4px);
  z-index: var(--z-overlay);
  opacity: 0;
  pointer-events: none;
  transition: opacity var(--transition-base);
}
.overlay.active {
  opacity: 1;
  pointer-events: all;
}

/* ── Mobile Bottom Nav ── */
.mobile-nav {
  display: none;
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  height: var(--mobile-nav-height);
  background: var(--color-surface);
  border-top: 1px solid var(--color-border);
  z-index: var(--z-above);
  padding-bottom: env(safe-area-inset-bottom);
}

/* ── Safe Area for Mobile ── */
.safe-bottom { padding-bottom: calc(var(--space-4) + env(safe-area-inset-bottom)); }
.safe-top    { padding-top: calc(var(--space-4) + env(safe-area-inset-top)); }

/* ============================================================
   RESPONSIVE
   ============================================================ */

/* Tablet */
@media (max-width: 1024px) {
  .sidebar {
    transform: translateX(100%);
    box-shadow: var(--shadow-xl);
  }
  .sidebar.open {
    transform: translateX(0);
  }
  .main-content {
    margin-right: 0;
  }
  .grid-4 { grid-template-columns: repeat(2, 1fr); }
  .grid-3 { grid-template-columns: repeat(2, 1fr); }
}

/* Mobile */
@media (max-width: 640px) {
  :root {
    --topbar-height: 56px;
  }
  .mobile-nav { display: flex; }
  .page-content {
    padding: var(--space-4);
    padding-bottom: calc(var(--mobile-nav-height) + var(--space-4));
  }
  .topbar {
    padding: 0 var(--space-4);
  }
  .grid-2,
  .grid-3,
  .grid-4 { grid-template-columns: 1fr; }
  .page-header {
    flex-direction: column;
    gap: var(--space-3);
  }
  .hide-mobile { display: none !important; }
}

@media (min-width: 641px) {
  .hide-desktop { display: none !important; }
}