/* App shell layout + view chrome. Component-local styling lives in Shadow DOM where used;
   these are the global layout primitives and the login screen. */

.app-shell {
  display: grid;
  grid-template-columns: var(--sidebar-w) 1fr;
  grid-template-rows: var(--topbar-h) 1fr;
  grid-template-areas:
    "brand topbar"
    "sidebar main";
  height: 100vh;
}

.app-brand {
  grid-area: brand;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--bg-surface);
  border-right: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
  font-weight: 700;
  color: var(--accent);
  font-size: var(--fs-lg);
}

.app-topbar {
  grid-area: topbar;
  display: flex;
  align-items: center;
  gap: var(--sp-3);
  padding: 0 var(--sp-4);
  background: var(--bg-surface);
  border-bottom: 1px solid var(--border);
}
.app-topbar .title {
  font-weight: 600;
  letter-spacing: -0.01em;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}
/* Topbar action buttons (menu / help / theme) need an explicit icon size — inline SVGs have
   no intrinsic dimensions, so without this the hamburger can collapse and become invisible. */
.app-topbar .btn svg {
  width: 20px;
  height: 20px;
}

.app-sidebar {
  grid-area: sidebar;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--sp-1);
  padding: var(--sp-2) 0;
  background: var(--bg-surface);
  border-right: 1px solid var(--border);
}
.nav-item {
  width: 40px;
  height: 40px;
  display: grid;
  place-items: center;
  border-radius: var(--radius-md);
  color: var(--text-muted);
  cursor: pointer;
  position: relative;
  transition: background var(--dur-fast), color var(--dur-fast);
}
.nav-item:hover {
  background: var(--bg-hover);
  color: var(--text-secondary);
}
.nav-item.active {
  color: var(--accent);
  background: var(--accent-soft);
}
.nav-item.active::before {
  content: "";
  position: absolute;
  left: -8px;
  top: 8px;
  bottom: 8px;
  width: 3px;
  border-radius: 999px;
  background: var(--accent);
}
.nav-item svg {
  width: 20px;
  height: 20px;
}

.app-main {
  grid-area: main;
  overflow-y: auto;
  /* Never let content (e.g. a wide table) push the page sideways — wide tables get their own
     horizontal scroll via `.table-scroll` / `.grid-scroll` containers instead. */
  overflow-x: hidden;
  min-width: 0;
  background: var(--bg-base);
}

/* User dropdown */
.user-dropdown {
  position: relative;
}
.user-trigger {
  display: flex;
  align-items: center;
  gap: var(--sp-2);
  padding: var(--sp-1) var(--sp-2);
  border-radius: var(--radius-md);
  cursor: pointer;
  background: transparent;
  border: 1px solid transparent;
  color: inherit;
  font: inherit;
}
.user-trigger:hover {
  background: var(--bg-hover);
  border-color: var(--border);
}
.user-meta {
  text-align: left;
  line-height: 1.2;
}
.user-email {
  font-size: var(--fs-sm);
  font-weight: 500;
}
.user-role {
  font-size: var(--fs-xs);
  text-transform: capitalize;
}
.user-trigger .caret {
  color: var(--text-muted);
  font-size: 10px;
}
.user-menu-panel {
  position: absolute;
  top: calc(100% + 6px);
  right: 0;
  min-width: 240px;
  background: var(--bg-elevated);
  border: 1px solid var(--border-strong);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-lg);
  padding: var(--sp-1);
  z-index: 900;
  animation: fade-in var(--dur-fast) var(--ease);
}
.menu-header {
  display: flex;
  align-items: center;
  gap: var(--sp-2);
  padding: var(--sp-2) var(--sp-3);
  border-bottom: 1px solid var(--border);
  margin-bottom: var(--sp-1);
}
.menu-name {
  font-weight: 600;
  font-size: var(--fs-sm);
}
.menu-item {
  display: flex;
  align-items: center;
  gap: var(--sp-2);
  width: 100%;
  padding: var(--sp-2) var(--sp-3);
  background: transparent;
  border: none;
  border-radius: var(--radius-sm);
  color: var(--text-primary);
  font: inherit;
  text-align: left;
  cursor: pointer;
}
.menu-item:hover {
  background: var(--bg-hover);
}
.menu-item svg {
  width: 16px;
  height: 16px;
  color: var(--text-muted);
}
.menu-item.danger {
  color: var(--danger);
}
.menu-item.danger svg {
  color: var(--danger);
}
.menu-sep {
  height: 1px;
  background: var(--border);
  margin: var(--sp-1) 0;
}
.avatar.lg {
  width: 34px;
  height: 34px;
  font-size: var(--fs-md);
}
.avatar {
  width: 26px;
  height: 26px;
  border-radius: 50%;
  display: grid;
  place-items: center;
  background: var(--accent);
  color: var(--accent-contrast);
  font-weight: 700;
  font-size: var(--fs-sm);
}

/* Generic view scaffolding (used by placeholder module views) */
.view {
  padding: var(--sp-5);
  max-width: 1100px;
}
/* Full-height view: the main content (a data table) fills the viewport and scrolls internally,
   so headers stay visible, the body shows only what fits, and a horizontal scrollbar sits at
   the bottom of the visible area. Spans the full page width. */
.view.view-fill {
  height: 100%;
  max-width: 100%;
  display: flex;
  flex-direction: column;
  min-height: 0;
}
.view-fill > .panel,
.panel.fill {
  flex: 1;
  min-height: 0;
  display: flex;
  flex-direction: column;
  overflow: hidden;
}
.view-header {
  margin-bottom: var(--sp-4);
}
.view-header h2 {
  font-size: var(--fs-xl);
  margin-bottom: var(--sp-1);
}
.panel {
  background: var(--bg-surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: var(--sp-5);
}
.placeholder {
  display: grid;
  place-items: center;
  gap: var(--sp-3);
  min-height: 320px;
  color: var(--text-muted);
  text-align: center;
}
.placeholder .ph-icon {
  font-size: 40px;
  opacity: 0.5;
}

/* Login screen */
.login-screen {
  height: 100vh;
  display: grid;
  place-items: center;
  background: radial-gradient(
      1200px 600px at 50% -10%,
      rgba(43, 179, 163, 0.12),
      transparent 60%
    ),
    var(--bg-base);
}
.login-card {
  width: 360px;
  background: var(--bg-surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
  padding: var(--sp-6);
}
.login-logo {
  display: flex;
  align-items: center;
  gap: var(--sp-2);
  font-weight: 700;
  font-size: var(--fs-xl);
  color: var(--text-primary);
  margin-bottom: var(--sp-2);
}
.login-logo .dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: var(--accent);
  box-shadow: 0 0 12px var(--accent);
}
.login-sub {
  color: var(--text-muted);
  font-size: var(--fs-sm);
  margin-bottom: var(--sp-5);
}
.login-card .field {
  margin-bottom: var(--sp-4);
}
.login-error {
  background: var(--danger-soft);
  border: 1px solid var(--danger);
  color: var(--danger);
  padding: var(--sp-2) var(--sp-3);
  border-radius: var(--radius-md);
  font-size: var(--fs-sm);
  margin-bottom: var(--sp-4);
}

/* Dashboard panels */
.stats-panel {
  display: flex;
  gap: var(--sp-6);
  flex-wrap: wrap;
}
.onboard-panel {
  display: flex;
  align-items: center;
  gap: var(--sp-3);
  margin-bottom: var(--sp-4);
  border-left: 3px solid var(--accent);
  flex-wrap: wrap;
}

/* Help / onboarding guide */
.help-content {
  display: flex;
  flex-direction: column;
  gap: var(--sp-4);
}
.help-section h4 {
  margin: 0 0 var(--sp-2);
  color: var(--accent);
}
.help-section ol {
  margin: 0;
  padding-left: var(--sp-5);
  display: flex;
  flex-direction: column;
  gap: var(--sp-2);
  color: var(--text-secondary);
}
.help-section kbd {
  font-family: var(--font-mono);
  font-size: var(--fs-xs);
  background: var(--bg-active);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 1px 5px;
}

/* Responsive: tablet & mobile */
@media (max-width: 860px) {
  .login-card {
    width: min(360px, 92vw);
  }
  .view {
    padding: var(--sp-4);
  }
  /* Toolbars wrap instead of overflowing. */
  .editor-toolbar,
  .viewer-controls,
  .session-bar {
    flex-wrap: wrap;
    row-gap: var(--sp-2);
  }
  .session-bar .input {
    min-width: 120px;
  }
}

/* The mobile drawer toggle and backdrop are hidden on desktop. */
.sidebar-toggle {
  display: none;
}
.nav-scrim {
  display: none;
}

@media (max-width: 640px) {
  /* Single-column shell; sidebar becomes an off-canvas drawer. */
  .app-shell {
    grid-template-columns: 1fr;
    grid-template-areas:
      "topbar"
      "main";
  }
  .app-brand {
    display: none;
  }
  .app-topbar {
    padding: 0 var(--sp-2);
    gap: var(--sp-2);
  }
  .sidebar-toggle {
    display: inline-flex;
    width: 40px;
    height: 40px;
    padding: 0;
    flex: none;
  }
  .user-meta {
    display: none; /* keep avatar + caret; hide email/role text */
  }
  /* Dimmed backdrop behind the off-canvas drawer; tap to close. */
  .nav-scrim {
    position: fixed;
    inset: var(--topbar-h) 0 0 0;
    background: rgba(0, 0, 0, 0.5);
    opacity: 0;
    pointer-events: none;
    transition: opacity var(--dur) var(--ease);
    z-index: 700;
  }
  .app-shell.nav-open .nav-scrim {
    display: block;
    opacity: 1;
    pointer-events: auto;
  }
  .app-sidebar {
    position: fixed;
    top: var(--topbar-h);
    left: 0;
    bottom: 0;
    width: 200px;
    flex-direction: column;
    align-items: stretch;
    gap: var(--sp-1);
    padding: var(--sp-3);
    transform: translateX(-110%);
    transition: transform var(--dur) var(--ease);
    z-index: 800;
    box-shadow: var(--shadow-lg);
  }
  .app-shell.nav-open .app-sidebar {
    transform: translateX(0);
  }
  /* Drawer nav items show icon + label in a row on mobile. */
  .app-sidebar .nav-item {
    display: flex;
    flex-direction: row;
    align-items: center;
    width: 100%;
    height: 42px;
    gap: var(--sp-3);
    padding: 0 var(--sp-3);
  }
  .app-sidebar .nav-item::before {
    display: none; /* hide the desktop active indicator bar in the drawer */
  }
  .app-sidebar .nav-item::after {
    content: attr(title);
    font-size: var(--fs-md);
    font-weight: 500;
    color: inherit;
  }
  .app-sidebar .nav-item svg {
    flex: none;
  }
  .modal {
    width: 94vw !important;
  }
  /* On phones the editor view becomes one scrollable column (the app-main scrolls) instead of
     squeezing everything into one screen — otherwise the result grid gets almost no height and
     its rows are unreachable. */
  .editor-layout {
    height: auto;
    min-height: 100%;
  }
  .code-editor {
    height: 32vh;
  }
  /* Give the results pane and messages real, scrollable height on mobile. */
  .editor-layout .results-area {
    min-height: 55vh;
  }
  /* Stacked result blocks shrink a little on phones so more than one is reachable. */
  .editor-layout .result-block.multi {
    height: 48vh;
  }
  .editor-layout .messages-panel {
    min-height: 45vh;
  }
  /* On phones the editor is a native textarea; 16px font stops iOS from zooming on focus.
     Two-class selector to outrank the base `.code-fallback` rule regardless of load order. */
  .code-editor .code-fallback {
    font-size: 16px;
    line-height: 1.5;
  }
  /* Toolbars stack their controls full-width for easy tapping. */
  .editor-toolbar,
  .viewer-controls {
    align-items: stretch;
  }
  .session-bar {
    width: 100%;
  }
  .session-bar .input {
    flex: 1;
    min-width: 0;
  }
  #run {
    width: 100%;
    justify-content: center;
  }
  #run .muted {
    display: none;
  }
  /* Grid cells wrap less aggressively; allow horizontal scroll. */
  .grid-table tbody td {
    max-width: 220px;
  }
}

/* Toasts */
.toast-stack {
  position: fixed;
  bottom: var(--sp-5);
  right: var(--sp-5);
  display: flex;
  flex-direction: column;
  gap: var(--sp-2);
  z-index: 1000;
}
.toast {
  min-width: 260px;
  max-width: 380px;
  padding: var(--sp-3) var(--sp-4);
  background: var(--bg-elevated);
  border: 1px solid var(--border-strong);
  border-left: 3px solid var(--accent);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-md);
  animation: toast-in var(--dur) var(--ease);
}
.toast.error {
  border-left-color: var(--danger);
}
.toast.success {
  border-left-color: var(--success);
}
@keyframes toast-in {
  from {
    opacity: 0;
    transform: translateY(8px);
  }
}