/* ============================================
   MMS Shell Layout
   Sidebar + TopBar + Grid + StatusBar
   ============================================ */

/* === Reset & Base === */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html, body {
  height: 100%;
  overflow: hidden;
  background: var(--bg-primary);
  color: var(--text-primary);
  font-family: var(--font-family);
  font-size: var(--font-base);
  line-height: var(--line-height);
  -webkit-font-smoothing: antialiased;
}

/* === App Shell Grid === */
#app {
  display: grid;
  grid-template-columns: var(--sidebar-collapsed) 1fr;
  grid-template-rows: var(--topbar-height) 1fr var(--statusbar-height);
  grid-template-areas:
    "sidebar topbar"
    "sidebar content"
    "sidebar statusbar";
  height: 100vh;
  transition: grid-template-columns var(--transition-normal);
}

#app.sidebar-expanded {
  grid-template-columns: var(--sidebar-expanded) 1fr;
}

/* === Top Bar === */
#topbar {
  grid-area: topbar;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 var(--space-4);
  background: var(--bg-secondary);
  border-bottom: 1px solid var(--border);
  z-index: var(--z-topbar);
  gap: var(--space-3);
}

.topbar-left {
  display: flex;
  align-items: center;
  gap: var(--space-3);
}

.topbar-logo {
  font-size: var(--font-lg);
  font-weight: 700;
  color: var(--accent);
  letter-spacing: -0.02em;
  white-space: nowrap;
}

.topbar-version {
  font-size: var(--font-xs);
  color: var(--text-muted);
  background: var(--bg-tertiary);
  padding: 2px 8px;
  border-radius: 4px;
}

.topbar-center {
  flex: 1;
  display: flex;
  justify-content: center;
}

.topbar-search {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  padding: 6px 14px;
  background: var(--bg-tertiary);
  border: 1px solid var(--border);
  border-radius: 6px;
  color: var(--text-muted);
  font-size: var(--font-sm);
  cursor: pointer;
  transition: border-color var(--transition-fast);
  min-width: 280px;
}

.topbar-search:hover {
  border-color: var(--border-active);
}

.topbar-search kbd {
  font-family: var(--font-mono);
  font-size: var(--font-xs);
  background: var(--bg-hover);
  padding: 1px 6px;
  border-radius: 3px;
  margin-left: auto;
}

.topbar-right {
  display: flex;
  align-items: center;
  gap: var(--space-3);
}

.topbar-indicator {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: var(--font-xs);
  color: var(--text-secondary);
}

.topbar-indicator .dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--success);
  box-shadow: 0 0 6px var(--success);
}

.topbar-indicator .dot.offline {
  background: var(--danger);
  box-shadow: 0 0 6px var(--danger);
}

.topbar-indicator .dot.reconnecting {
  background: var(--warning);
  box-shadow: 0 0 6px var(--warning);
  animation: pulse 1.5s infinite;
}

.topbar-btn {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 32px;
  height: 32px;
  border: none;
  border-radius: 6px;
  background: transparent;
  color: var(--text-secondary);
  cursor: pointer;
  transition: all var(--transition-fast);
}

.topbar-btn:hover {
  background: var(--bg-hover);
  color: var(--text-primary);
}

/* === Sidebar === */
#sidebar {
  grid-area: sidebar;
  display: flex;
  flex-direction: column;
  background: var(--bg-secondary);
  border-right: 1px solid var(--border);
  z-index: var(--z-sidebar);
  overflow: hidden;
  transition: width var(--transition-normal);
}

.sidebar-toggle {
  display: flex;
  align-items: center;
  justify-content: center;
  height: var(--topbar-height);
  border-bottom: 1px solid var(--border);
  cursor: pointer;
  color: var(--text-secondary);
  transition: color var(--transition-fast);
  flex-shrink: 0;
}

.sidebar-toggle:hover {
  color: var(--text-primary);
}

.sidebar-nav {
  flex: 1;
  display: flex;
  flex-direction: column;
  padding: var(--space-2) 0;
  gap: 2px;
  overflow-y: auto;
  overflow-x: hidden;
}

.sidebar-nav::-webkit-scrollbar {
  width: 0;
}

.nav-item {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  padding: 10px var(--space-4);
  color: var(--text-muted);
  cursor: pointer;
  transition: all var(--transition-fast);
  white-space: nowrap;
  border-left: 3px solid transparent;
  text-decoration: none;
}

.nav-item:hover {
  color: var(--text-primary);
  background: var(--bg-hover);
}

.nav-item.active {
  color: var(--accent);
  background: var(--accent-muted);
  border-left-color: var(--accent);
}

.nav-item svg {
  width: 20px;
  height: 20px;
  flex-shrink: 0;
}

.nav-label {
  font-size: var(--font-sm);
  opacity: 0;
  transition: opacity var(--transition-normal);
}

.sidebar-expanded .nav-label {
  opacity: 1;
}

.nav-divider {
  height: 1px;
  background: var(--border);
  margin: var(--space-2) var(--space-3);
}

.sidebar-footer {
  padding: var(--space-2);
  border-top: 1px solid var(--border);
  flex-shrink: 0;
}

/* === Main Content Area === */
#content {
  grid-area: content;
  overflow-y: auto;
  overflow-x: hidden;
  padding: var(--grid-gap);
  scroll-behavior: smooth;
}

#content::-webkit-scrollbar {
  width: 6px;
}

#content::-webkit-scrollbar-track {
  background: transparent;
}

#content::-webkit-scrollbar-thumb {
  background: var(--border-active);
  border-radius: 3px;
}

/* === Bento Grid === */
.bento-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
  gap: var(--grid-gap);
  animation: fadeIn 0.3s ease;
}

.bento-grid.cols-2 { grid-template-columns: repeat(2, 1fr); }
.bento-grid.cols-3 { grid-template-columns: repeat(3, 1fr); }
.bento-grid.cols-4 { grid-template-columns: repeat(4, 1fr); }

/* Span classes for module sizing */
.span-1 { grid-column: span 1; }
.span-2 { grid-column: span 2; }
.span-3 { grid-column: span 3; }
.span-full { grid-column: 1 / -1; }
.row-2 { grid-row: span 2; }
.row-3 { grid-row: span 3; }

/* === Status Bar === */
#statusbar {
  grid-area: statusbar;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 var(--space-4);
  background: var(--bg-secondary);
  border-top: 1px solid var(--border);
  font-size: var(--font-xs);
  color: var(--text-muted);
  z-index: var(--z-sticky);
  gap: var(--space-4);
}

.status-left,
.status-right {
  display: flex;
  align-items: center;
  gap: var(--space-4);
}

.status-item {
  display: flex;
  align-items: center;
  gap: 4px;
}

.status-item .dot-sm {
  width: 6px;
  height: 6px;
  border-radius: 50%;
}

/* === Command Palette === */
.command-overlay {
  position: fixed;
  inset: 0;
  background: var(--bg-overlay);
  z-index: var(--z-command);
  display: flex;
  align-items: flex-start;
  justify-content: center;
  padding-top: 20vh;
  animation: fadeIn 0.15s ease;
}

.command-overlay[hidden] {
  display: none;
}

.command-palette {
  width: 560px;
  max-height: 420px;
  background: var(--bg-secondary);
  border: 1px solid var(--border-active);
  border-radius: 12px;
  box-shadow: var(--shadow-lg);
  overflow: hidden;
  display: flex;
  flex-direction: column;
  animation: slideDown 0.15s ease;
}

.command-input-wrap {
  display: flex;
  align-items: center;
  padding: var(--space-3) var(--space-4);
  border-bottom: 1px solid var(--border);
  gap: var(--space-2);
}

.command-input-wrap svg {
  color: var(--text-muted);
  flex-shrink: 0;
}

.command-input {
  flex: 1;
  border: none;
  background: transparent;
  color: var(--text-primary);
  font-size: var(--font-base);
  font-family: var(--font-family);
  outline: none;
}

.command-input::placeholder {
  color: var(--text-muted);
}

.command-results {
  overflow-y: auto;
  padding: var(--space-2);
}

.command-item {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  padding: 8px var(--space-3);
  border-radius: 6px;
  cursor: pointer;
  color: var(--text-secondary);
  font-size: var(--font-sm);
  transition: all var(--transition-fast);
}

.command-item:hover,
.command-item.selected {
  background: var(--bg-hover);
  color: var(--text-primary);
}

.command-item svg {
  width: 16px;
  height: 16px;
  flex-shrink: 0;
}

.command-item-label {
  flex: 1;
}

.command-item kbd {
  font-family: var(--font-mono);
  font-size: var(--font-xs);
  color: var(--text-muted);
  background: var(--bg-tertiary);
  padding: 1px 6px;
  border-radius: 3px;
}

.command-empty {
  padding: var(--space-6);
  text-align: center;
  color: var(--text-muted);
  font-size: var(--font-sm);
}

/* === Toast Notifications === */
.toast-container {
  position: fixed;
  bottom: calc(var(--statusbar-height) + var(--space-3));
  right: var(--space-4);
  z-index: var(--z-toast);
  display: flex;
  flex-direction: column-reverse;
  gap: var(--space-2);
  pointer-events: none;
}

.toast {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  padding: var(--space-3) var(--space-4);
  background: var(--bg-secondary);
  border: 1px solid var(--border);
  border-radius: 8px;
  box-shadow: var(--shadow-md);
  font-size: var(--font-sm);
  color: var(--text-primary);
  pointer-events: auto;
  animation: slideInRight 0.2s ease;
  max-width: 380px;
}

.toast.success { border-left: 3px solid var(--success); }
.toast.error   { border-left: 3px solid var(--danger); }
.toast.warning { border-left: 3px solid var(--warning); }
.toast.info    { border-left: 3px solid var(--info); }

.toast-icon {
  flex-shrink: 0;
  width: 18px;
  height: 18px;
}

.toast.success .toast-icon { color: var(--success); }
.toast.error   .toast-icon { color: var(--danger); }
.toast.warning .toast-icon { color: var(--warning); }
.toast.info    .toast-icon { color: var(--info); }

.toast-close {
  margin-left: auto;
  background: none;
  border: none;
  color: var(--text-muted);
  cursor: pointer;
  padding: 2px;
}

/* === Context Menu === */
.context-menu {
  position: fixed;
  min-width: 180px;
  background: var(--bg-secondary);
  border: 1px solid var(--border-active);
  border-radius: 8px;
  box-shadow: var(--shadow-lg);
  padding: var(--space-1);
  z-index: var(--z-modal);
  animation: fadeIn 0.1s ease;
}

.context-menu[hidden] { display: none; }

.context-item {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  padding: 6px var(--space-3);
  border-radius: 4px;
  font-size: var(--font-sm);
  color: var(--text-secondary);
  cursor: pointer;
  transition: all var(--transition-fast);
}

.context-item:hover {
  background: var(--bg-hover);
  color: var(--text-primary);
}

.context-divider {
  height: 1px;
  background: var(--border);
  margin: var(--space-1) 0;
}

/* === Module Error Card === */
.module-error {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: var(--space-8);
  color: var(--text-muted);
  gap: var(--space-3);
  min-height: 120px;
}

.module-error-icon {
  font-size: 2rem;
  color: var(--warning);
}

.module-error button {
  padding: 6px 16px;
  background: var(--bg-hover);
  border: 1px solid var(--border);
  border-radius: 6px;
  color: var(--text-secondary);
  cursor: pointer;
  font-size: var(--font-sm);
}

.module-error button:hover {
  background: var(--bg-active);
  color: var(--text-primary);
}

/* === Loading State === */
.module-loading {
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 120px;
  color: var(--text-muted);
}

.spinner {
  width: 20px;
  height: 20px;
  border: 2px solid var(--border);
  border-top-color: var(--accent);
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
}

/* === Animations === */
@keyframes fadeIn {
  from { opacity: 0; }
  to   { opacity: 1; }
}

@keyframes slideDown {
  from { opacity: 0; transform: translateY(-12px); }
  to   { opacity: 1; transform: translateY(0); }
}

@keyframes slideInRight {
  from { opacity: 0; transform: translateX(24px); }
  to   { opacity: 1; transform: translateX(0); }
}

@keyframes spin {
  to { transform: rotate(360deg); }
}

@keyframes pulse {
  0%, 100% { opacity: 1; }
  50%      { opacity: 0.4; }
}

/* ── Mobile Responsive (INF-4) ────────────────────── */

/* Hamburger Menu Button (hidden on desktop) */
.mobile-menu-btn {
  display: none;
  position: fixed;
  top: 12px;
  left: 12px;
  z-index: 1001;
  background: #1e293b;
  border: 1px solid #334155;
  color: #e2e8f0;
  width: 40px;
  height: 40px;
  border-radius: 8px;
  font-size: 20px;
  cursor: pointer;
  align-items: center;
  justify-content: center;
}

@media (max-width: 768px) {
  .mobile-menu-btn { display: flex; }

  #app {
    grid-template-columns: 0 1fr !important;
    grid-template-rows: var(--topbar-height) 1fr var(--statusbar-height);
  }

  #sidebar {
    position: fixed;
    left: -280px;
    top: 0;
    height: 100vh;
    z-index: 1000;
    transition: left 0.3s ease;
    width: 280px;
    min-width: 280px;
  }
  #sidebar.open { left: 0; }

  #content {
    margin-left: 0 !important;
    padding: 60px 12px 12px !important;
    width: 100% !important;
    grid-column: 2 !important;
  }

  #topbar {
    grid-column: 2 !important;
    padding-left: 60px;
  }

  /* Overlay when sidebar open */
  .sidebar-overlay {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0,0,0,0.5);
    z-index: 999;
  }
  .sidebar-overlay.active { display: block; }

  /* Tables scroll horizontally */
  table { display: block; overflow-x: auto; white-space: nowrap; }

  /* Grid adjustments */
  .bento-grid { grid-template-columns: 1fr !important; gap: 8px !important; }
  .span-2, .span-3 { grid-column: span 1 !important; }
  .kpi-grid { grid-template-columns: repeat(2, 1fr) !important; gap: 8px !important; }

  /* Cards padding */
  .card { padding: 12px !important; }

  /* Font sizes */
  h1, h2 { font-size: 16px !important; }
  .stat-value { font-size: 20px !important; }

  /* Statusbar – only show essentials */
  .status-right { display: none; }
}

@media (max-width: 480px) {
  .kpi-grid { grid-template-columns: 1fr !important; }
  #content { padding: 56px 8px 8px !important; }
  .topbar-center { display: none; }
}