/* ==========================================================================
   LAYOUT
   ========================================================================== */

/* ---------------------------- SIDEBAR ---------------------------------- */
.sidebar{
  width: var(--sidebar-w);
  flex-shrink: 0;
  height: 100%;
  display: flex;
  flex-direction: column;
  background: var(--bg-glass-strong);
  backdrop-filter: blur(24px) saturate(160%);
  -webkit-backdrop-filter: blur(24px) saturate(160%);
  border-right: 1px solid var(--border-subtle);
  z-index: var(--z-sidebar);
  transition: width var(--dur-slow) var(--ease-out);
  position: relative;
}
#app[data-sidebar="collapsed"] .sidebar{ width: var(--sidebar-w-collapsed); }

.sidebar-brand{
  display: flex; align-items: center; gap: 10px;
  height: var(--topbar-h);
  padding: 0 var(--space-5);
  border-bottom: 1px solid var(--border-subtle);
  flex-shrink: 0;
  cursor: pointer;
}
.brand-mark{
  width: 32px; height: 32px; border-radius: 10px;
  background: linear-gradient(155deg, var(--accent-400), var(--accent-700) 55%, var(--ember-500));
  display: flex; align-items: center; justify-content: center;
  box-shadow: 0 4px 14px -2px hsl(var(--hue-violet)/0.55), inset 0 1px 0 rgba(255,255,255,0.25);
  flex-shrink: 0;
  position: relative;
}
.brand-mark svg{ width: 18px; height: 18px; }
.brand-text{ display: flex; flex-direction: column; overflow: hidden; white-space: nowrap; }
.brand-name{ font-family: var(--font-display); font-weight: 700; font-size: var(--fs-sm); letter-spacing: var(--tracking-tight); line-height: 1.1; }
.brand-sub{ font-size: 10px; color: var(--text-tertiary); letter-spacing: var(--tracking-widest); text-transform: uppercase; font-weight: 600; }
#app[data-sidebar="collapsed"] .brand-text{ display: none; }

.sidebar-search{
  margin: var(--space-4) var(--space-4) var(--space-2);
  flex-shrink: 0;
}
.sidebar-search button{
  width: 100%;
  display: flex; align-items: center; gap: var(--space-2);
  padding: 9px 10px;
  border-radius: var(--radius-md);
  background: var(--bg-hover);
  border: 1px solid var(--border-subtle);
  color: var(--text-tertiary);
  font-size: var(--fs-sm);
  cursor: pointer;
  transition: all var(--dur-fast) var(--ease-out);
}
.sidebar-search button:hover{ border-color: var(--border-strong); color: var(--text-secondary); }
.sidebar-search kbd{
  margin-left: auto;
  font-size: 10px;
  padding: 2px 6px;
  border-radius: 5px;
  background: var(--bg-surface-3);
  border: 1px solid var(--border-subtle);
  font-family: var(--font-mono);
}
#app[data-sidebar="collapsed"] .sidebar-search kbd,
#app[data-sidebar="collapsed"] .sidebar-search span{ display: none; }

.sidebar-nav{
  flex: 1;
  overflow-y: auto;
  padding: var(--space-2) var(--space-3) var(--space-4);
}
.nav-group{ margin-bottom: var(--space-4); }
.nav-group-label{
  font-size: 10px;
  font-weight: 700;
  letter-spacing: var(--tracking-widest);
  text-transform: uppercase;
  color: var(--text-tertiary);
  padding: 0 var(--space-3);
  margin-bottom: 6px;
}
#app[data-sidebar="collapsed"] .nav-group-label{ display: none; }

.nav-item{
  display: flex; align-items: center; gap: 11px;
  padding: 8px 10px;
  border-radius: var(--radius-md);
  cursor: pointer;
  color: var(--text-secondary);
  font-size: var(--fs-sm);
  font-weight: 500;
  position: relative;
  transition: background var(--dur-fast) var(--ease-out), color var(--dur-fast) var(--ease-out);
  margin-bottom: 1px;
  white-space: nowrap;
}
.nav-item:hover{ background: var(--bg-hover); color: var(--text-primary); }
.nav-item.active{ background: var(--bg-active); color: var(--text-primary); }
.nav-item.active .nav-icon{ color: var(--accent-strong); }
.nav-item.active::before{
  content: ""; position: absolute; left: -12px; top: 50%; transform: translateY(-50%);
  width: 3px; height: 16px; border-radius: var(--radius-full);
  background: linear-gradient(var(--accent), var(--ember));
  box-shadow: 0 0 10px hsl(var(--hue-ember) / 0.6);
}
.nav-icon{ width: 17px; height: 17px; flex-shrink: 0; color: var(--text-tertiary); }
.nav-label{ flex: 1; overflow: hidden; text-overflow: ellipsis; }
.nav-count{
  font-size: 10.5px; font-weight: 600; color: var(--text-tertiary);
  background: var(--bg-surface-3); padding: 1px 6px; border-radius: var(--radius-full);
}
.nav-item.active .nav-count{ background: hsl(var(--hue-violet) / 0.22); color: var(--accent-strong); }
#app[data-sidebar="collapsed"] .nav-label,
#app[data-sidebar="collapsed"] .nav-count{ display: none; }
#app[data-sidebar="collapsed"] .nav-item{ justify-content: center; }
#app[data-sidebar="collapsed"] .nav-item.active::before{ left: -9px; }

.sidebar-footer{
  padding: var(--space-3);
  border-top: 1px solid var(--border-subtle);
  flex-shrink: 0;
  display: flex; flex-direction: column; gap: 6px;
}
.storage-meter{
  padding: var(--space-3);
  border-radius: var(--radius-md);
  background: var(--bg-hover);
  border: 1px solid var(--border-subtle);
}
.storage-meter-top{ display: flex; justify-content: space-between; align-items: center; font-size: var(--fs-2xs); color: var(--text-tertiary); margin-bottom: 7px; }
.storage-bar{ height: 5px; border-radius: var(--radius-full); background: var(--bg-surface-3); overflow: hidden; }
.storage-bar-fill{ height: 100%; border-radius: var(--radius-full); background: linear-gradient(90deg, var(--accent), var(--ember)); transition: width var(--dur-slow) var(--ease-out); }
#app[data-sidebar="collapsed"] .storage-meter{ display: none; }

.sidebar-collapse-btn{
  position: absolute; top: 18px; right: -12px;
  width: 24px; height: 24px; border-radius: var(--radius-full);
  background: var(--bg-surface-2); border: 1px solid var(--border-default);
  display: flex; align-items: center; justify-content: center;
  cursor: pointer; color: var(--text-tertiary); box-shadow: var(--shadow-sm);
  z-index: 5;
  transition: transform var(--dur-base) var(--ease-out), color var(--dur-fast);
}
.sidebar-collapse-btn:hover{ color: var(--accent-strong); }
#app[data-sidebar="collapsed"] .sidebar-collapse-btn svg{ transform: rotate(180deg); }
.sidebar-collapse-btn svg{ width: 13px; height: 13px; transition: transform var(--dur-base) var(--ease-out); }

/* ---------------------------- MAIN AREA -------------------------------- */
.main{
  flex: 1;
  display: flex;
  flex-direction: column;
  min-width: 0;
  min-height: 0;
  height: 100%;
  overflow: hidden;
  position: relative;
}

.topbar{
  height: var(--topbar-h);
  flex-shrink: 0;
  display: flex; align-items: center; gap: var(--space-4);
  padding: 0 var(--space-6);
  border-bottom: 1px solid var(--border-subtle);
  background: var(--bg-glass);
  backdrop-filter: blur(20px) saturate(160%);
  -webkit-backdrop-filter: blur(20px) saturate(160%);
  z-index: var(--z-topbar);
}
.topbar-title{ display:flex; flex-direction: column; gap: 1px; min-width: 0; }
.topbar-title h1{ font-size: var(--fs-md); font-weight: 650; letter-spacing: var(--tracking-tight); }
.topbar-crumb{ font-size: var(--fs-2xs); color: var(--text-tertiary); }
.topbar-actions{ margin-left: auto; display: flex; align-items: center; gap: var(--space-2); }
.topbar-search-trigger{
  display: flex; align-items: center; gap: var(--space-2);
  padding: 7px 12px 7px 10px;
  border-radius: var(--radius-full);
  background: var(--bg-hover);
  border: 1px solid var(--border-subtle);
  color: var(--text-tertiary);
  font-size: var(--fs-sm);
  cursor: pointer; min-width: 220px;
  transition: all var(--dur-fast) var(--ease-out);
}
.topbar-search-trigger:hover{ border-color: var(--border-strong); }

.view-body{
  flex: 1;
  min-height: 0;
  overflow-y: auto;
  -webkit-overflow-scrolling: touch;
  overscroll-behavior: contain;
  padding: var(--space-6) var(--space-7) var(--space-9);
  padding-bottom: calc(var(--space-9) + env(safe-area-inset-bottom));
  padding-left: max(var(--space-7), env(safe-area-inset-left));
  padding-right: max(var(--space-7), env(safe-area-inset-right));
}
.view-body-narrow{ max-width: 980px; margin: 0 auto; }

.view{ display: none; animation: viewIn var(--dur-slow) var(--ease-out); }
.view.active{ display: block; }
@keyframes viewIn{ from{ opacity:0; transform: translateY(6px);} to{ opacity:1; transform: translateY(0);} }

.section-head{ display: flex; align-items: flex-end; justify-content: space-between; margin-bottom: var(--space-5); gap: var(--space-4); flex-wrap: wrap; }
.section-head h2{ font-size: var(--fs-lg); }
.section-head p{ color: var(--text-tertiary); font-size: var(--fs-sm); margin-top: 3px; }

/* ---------------------------- Grid helpers ------------------------------ */
.grid{ display: grid; gap: var(--space-4); }
.grid-cols-4{ grid-template-columns: repeat(4, 1fr); }
.grid-cols-3{ grid-template-columns: repeat(3, 1fr); }
.grid-cols-2{ grid-template-columns: repeat(2, 1fr); }
.flex{ display: flex; }
.flex-col{ display: flex; flex-direction: column; }
.items-center{ align-items: center; }
.justify-between{ justify-content: space-between; }
.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); }

@media (max-width: 1200px){
  .grid-cols-4{ grid-template-columns: repeat(2, 1fr); }
  .grid-cols-3{ grid-template-columns: repeat(2, 1fr); }
}

/* ---------------------------- RESPONSIVE -------------------------------- */
@media (max-width: 980px){
  .sidebar{ position: fixed; left: 0; top: 0; transform: translateX(-100%); box-shadow: var(--shadow-lg); }
  #app[data-mobile-nav="open"] .sidebar{ transform: translateX(0); }
  #app[data-sidebar="collapsed"] .sidebar{ width: var(--sidebar-w); }
  .mobile-nav-scrim{ display: none; position: fixed; inset: 0; background: rgba(0,0,0,0.5); z-index: 39; }
  #app[data-mobile-nav="open"] .mobile-nav-scrim{ display: block; }
  .sidebar-collapse-btn{ display: none; }
  .hamburger-btn{ display: flex !important; }
  .view-body{ padding: var(--space-4) var(--space-4) var(--space-8); }
  .topbar{ padding: 0 var(--space-4); gap: var(--space-2); }
  .topbar-search-trigger{ min-width: 0; }
  .topbar-search-trigger span{ display: none; }
  .grid-cols-4, .grid-cols-3, .grid-cols-2{ grid-template-columns: minmax(0, 1fr); }
  .sidebar{ height: 100%; padding-bottom: env(safe-area-inset-bottom); }
}

@media (max-width: 640px){
  .view-body{ padding: var(--space-4) var(--space-3) calc(var(--space-8) + env(safe-area-inset-bottom)); }
  .section-head{ align-items: flex-start; }
  .toolbar .input-icon-wrap{ max-width: none; flex: 1 1 100%; }
  .prompt-grid{ grid-template-columns: minmax(0, 1fr); }
  .folder-grid, .persona-grid{ grid-template-columns: minmax(0, 1fr); }
  .prompt-list-date, .prompt-list-tags{ display: none; }
  .prompt-list-actions{ opacity: 1; }
  .prompt-card-actions{ opacity: 1; }
  .settings-row{ flex-direction: column; align-items: flex-start; }
  .filter-bar{ overflow-x: auto; flex-wrap: nowrap; padding-bottom: 4px; }
  .filter-bar > *{ flex: 0 0 auto; }
}

/* Short landscape screens: reclaim vertical space from the chrome. */
@media (max-height: 560px) and (orientation: landscape){
  .topbar{ height: 52px; }
  .view-body{ padding-top: var(--space-3); }
}
.hamburger-btn{ display: none; }