.topbar {
  display: flex;
  flex-direction: column;
  align-items: stretch;
  min-height: var(--topbar-main-h);
  background: transparent;
  border-bottom: none;
  box-shadow: var(--glass-pane-highlight);
  backdrop-filter: none;
  -webkit-backdrop-filter: none;
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  z-index: 60;
  isolation: isolate;
}

.topbar::before {
  content: "";
  position: absolute;
  inset: 0;
  background: var(--workspace-bar-bg);
  backdrop-filter: var(--glass-pane-blur);
  -webkit-backdrop-filter: var(--glass-pane-blur);
  pointer-events: none;
  z-index: 0;
}

/* The topbar and workspace rail share one rounded, border-free junction. */
.topbar::after {
  content: "";
  position: absolute;
  left: calc(var(--rail-w) + var(--radius-md));
  right: 0;
  bottom: 0;
  height: 1px;
  background: var(--workspace-bar-border-color);
  pointer-events: none;
  z-index: 0;
}

.topbar > * {
  position: relative;
  z-index: 1;
}

.topbar-menu-strip {
  width: 100%;
  min-height: var(--topbar-main-h);
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 0 12px;
  min-width: 0;
  position: relative;
  flex-shrink: 0;
}

.topbar-left {
  display: flex;
  align-items: center;
  gap: 10px;
  min-width: 0;
}

.topbar-collapse {
  display: flex;
  align-items: center;
  gap: 10px;
  flex: 1 1 auto;
  min-width: 0;
}

.topbar .topbar-menu-toggle {
  display: none;
}

.app-brand {
  display: inline-flex;
  align-items: center;
  gap: 9px;
  min-width: 0;
  padding-right: 11px;
  margin-right: 1px;
  border-right: 1px solid color-mix(in srgb, var(--border) 66%, transparent);
  color: inherit;
  text-decoration: none;
  cursor: pointer;
  transition:
    opacity var(--transition),
    transform var(--transition);
}

.app-brand:hover {
  opacity: 0.9;
  transform: translateY(-1px);
}

.app-brand-logo {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  border-radius: 8px;
  background: color-mix(in srgb, var(--surface-3) 76%, transparent);
  box-shadow: inset 0 0 0 1px color-mix(in srgb, var(--border) 54%, transparent);
}

.app-brand-logo img {
  width: 37px;
  height: 37px;
}

.app-logo-img {
  width: 34px;
}

.app-logo-img {
  content: url("../assets/icons/logo/modriss-logo-w.svg");
}

html.light .app-logo-img {
  content: url("../assets/icons/logo/modriss-logo.svg");
}

.app-brand-text {
  display: inline-flex;
  flex-direction: column;
  min-width: 0;
  line-height: 1.12;
}

.app-brand-name {
  font-family: var(--font-display);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--text-strong);
}

.app-brand-subtitle {
  font-size: 10px;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--muted);
}

.ide-menubar {
  display: flex;
  align-items: center;
  gap: 5px;
  min-width: 0;
}

.model-lifecycle {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  flex: 0 0 auto;
  min-width: 0;
  padding: 3px;
  border: 1px solid color-mix(in srgb, var(--border) 64%, transparent);
  border-radius: 9px;
  background: color-mix(in srgb, var(--surface-2) 66%, transparent);
  box-shadow:
    inset 0 1px 0 color-mix(in srgb, #fff 5%, transparent),
    0 1px 0 color-mix(in srgb, #000 14%, transparent);
}

/* The lifecycle controls are part of the topbar surface, not a separate
 * tinted panel. A panel here creates the blue strip at the rail junction. */
.topbar-collapse > .model-lifecycle {
  background: transparent;
  box-shadow: none;
}

.model-lifecycle-heading {
  display: grid;
  gap: 2px;
  min-width: 72px;
  padding: 0 4px 0 6px;
}

.model-lifecycle-heading span,
.model-lifecycle-group-label {
  color: var(--muted-2);
  font: 800 7px/1 var(--font-display);
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

.model-lifecycle-heading strong {
  color: var(--text);
  font: 700 9px/1.1 var(--font-ui);
  white-space: nowrap;
}

.model-lifecycle-tools {
  gap: 3px;
}

.model-lifecycle-group {
  position: relative;
  display: grid;
  gap: 2px;
  padding: 2px;
  border-radius: 6px;
  background: color-mix(in srgb, var(--surface-3) 66%, transparent);
}

.model-lifecycle-group + .model-lifecycle-group::before {
  content: "";
  position: absolute;
  left: -2px;
  top: 7px;
  bottom: 4px;
  width: 1px;
  background: color-mix(in srgb, var(--border) 64%, transparent);
}

.model-lifecycle-group-label {
  padding-left: 5px;
}

.model-lifecycle-group-actions {
  display: inline-flex;
  align-items: center;
  gap: 2px;
}

.ide-menu {
  position: relative;
  flex-shrink: 0;
}

.ide-menu-trigger {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  min-height: 25px;
  font: 700 10px/1.15 var(--font-display);
  letter-spacing: 0.1em;
  text-transform: uppercase;
  border-radius: 3px;
  padding: 6px 11px;
  border: 1px solid color-mix(in srgb, var(--border) 72%, transparent);
  background: color-mix(in srgb, var(--surface-3) 88%, var(--surface) 12%);
  color: color-mix(in srgb, var(--text) 82%, var(--muted) 18%);
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.08);
  cursor: pointer;
  transition:
    background var(--transition),
    border-color var(--transition),
    color var(--transition),
    transform var(--transition),
    box-shadow var(--transition),
    filter var(--transition);
}

.ide-menu-trigger:hover,
.ide-menu.is-open .ide-menu-trigger {
  color: var(--text-strong);
  background: color-mix(in srgb, var(--surface-high) 82%, var(--surface-3) 18%);
  box-shadow:
    inset 0 1px 0 rgba(255, 255, 255, 0.1),
    var(--shadow-sm);
  transform: translateY(-1px);
}

.ide-menu-trigger:active {
  transform: scale(0.96);
}

.ide-menu-trigger:focus-visible {
  outline: none;
  border-color: color-mix(in srgb, var(--accent) 72%, transparent);
  box-shadow: 0 0 0 2px color-mix(in srgb, var(--accent-glow) 68%, transparent);
}

.topbar-ide-btn {
  min-width: 0;
  min-height: 26px;
  padding: 4px 10px;
  border-color: color-mix(in srgb, var(--border) 72%, transparent);
  background: color-mix(in srgb, var(--surface-3) 88%, var(--surface) 12%);
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.06);
  font-size: 9px;
}

.topbar-ide-btn:hover,
.topbar-ide-btn.is-active,
.topbar-ide-btn.active {
  border-color: color-mix(in srgb, var(--accent) 42%, var(--border) 58%);
  background: color-mix(in srgb, var(--surface-high) 82%, var(--surface-3) 18%);
  box-shadow:
    inset 0 1px 0 rgba(255, 255, 255, 0.08),
    var(--shadow-sm);
}

.topbar-btn-icon {
  width: 12px;
  height: 12px;
  object-fit: contain;
}

.topbar-btn-label {
  white-space: nowrap;
}

.topbar-generate-btn {
  min-width: 112px;
  border-color: color-mix(in srgb, var(--accent-light) 36%, transparent);
  background: color-mix(in srgb, var(--accent-light) 72%, #fff 28%);
  color: color-mix(in srgb, var(--accent-dark) 88%, #000 12%);
}

.topbar-validate-btn {
  color: var(--text);
}

.topbar-generate-btn:hover {
  box-shadow: 0 10px 20px color-mix(in srgb, var(--accent-glow) 82%, transparent);
}

.ide-menu-items {
  display: none;
  position: absolute;
  left: 0;
  top: calc(100% + 8px);
  min-width: 248px;
  max-width: min(340px, calc(100vw - 16px));
  max-height: calc(100vh - 24px);
  overflow-y: auto;
  border-radius: 7px;
  border: var(--glass-pane-border);
  background: color-mix(in srgb, var(--glass-pane-bg) 96%, var(--surface-2) 4%);
  box-shadow: var(--glass-pane-highlight);
  backdrop-filter: var(--glass-pane-blur);
  -webkit-backdrop-filter: var(--glass-pane-blur);
  padding: 8px;
  flex-direction: column;
  gap: 4px;
  z-index: 90;
}

.ide-menu.is-open .ide-menu-items {
  display: flex;
}

.ide-menu-item,
.ide-menu-select {
  width: 100%;
  border-radius: 8px;
  font: 500 12px/1.3 var(--font-ui);
}

.ide-menu-item {
  text-align: left;
  padding: 8px 10px;
  border: 1px solid transparent;
  background: transparent;
  color: var(--text);
  cursor: pointer;
  transition:
    background var(--transition),
    border-color var(--transition),
    color var(--transition);
}

.ide-menu-item:hover:not(:disabled) {
  background: color-mix(in srgb, var(--surface-3) 84%, var(--surface) 16%);
  border-color: color-mix(in srgb, var(--border) 78%, transparent);
  color: var(--text-strong);
}

.ide-menu-item:disabled,
.ide-menu-select:disabled {
  opacity: 0.55;
  cursor: not-allowed;
}

.ide-menu-separator {
  height: 1px;
  margin: 4px 0;
  background: color-mix(in srgb, var(--border-subtle) 74%, transparent);
}

.ide-menu-label {
  color: var(--muted);
  font: 600 10px/1.2 var(--font-display);
  letter-spacing: 0.09em;
  text-transform: uppercase;
  padding: 4px 2px 0;
}

.ide-menu-select {
  padding: 7px 9px;
  border: 1px solid color-mix(in srgb, var(--border) 78%, transparent);
  background-color: color-mix(in srgb, var(--surface-3) 88%, var(--surface) 12%);
  color: var(--text);
}

.ide-menu-select:is(select) {
  padding-right: 32px;
  background-image:
    linear-gradient(45deg, transparent 50%, var(--muted) 50%),
    linear-gradient(135deg, var(--muted) 50%, transparent 50%);
  background-position:
    calc(100% - 17px) 50%,
    calc(100% - 12px) 50%;
  background-repeat: no-repeat;
  background-size: 5px 5px;
}

.ide-menu-select:is(select):focus {
  outline: none;
  border-color: color-mix(in srgb, var(--accent) 72%, transparent);
  background-image:
    linear-gradient(45deg, transparent 50%, var(--accent-light) 50%),
    linear-gradient(135deg, var(--accent-light) 50%, transparent 50%);
  box-shadow: 0 0 0 2px color-mix(in srgb, var(--accent-glow) 62%, transparent);
}

.tabs {
  display: flex;
  align-items: center;
  gap: 4px;
  flex: 1 1 auto;
  min-width: 0;
  overflow: hidden;
  scrollbar-width: none;
  margin-left: 2px;
}

.tabs::-webkit-scrollbar {
  display: none;
}

.tab {
  flex: 0 1 auto;
  border: none;
  border-bottom: 2px solid transparent;
  border-radius: 0;
  background: transparent;
  padding: 8px 8px 6px;
  color: color-mix(in srgb, var(--text) 72%, var(--muted) 28%);
  font: 700 10px/1.1 var(--font-display);
  letter-spacing: 0.1em;
  text-transform: uppercase;
  cursor: pointer;
  transition:
    color var(--transition),
    border-color var(--transition),
    background var(--transition);
}

.tab:hover {
  color: var(--text);
  background: color-mix(in srgb, var(--surface-3) 60%, transparent);
}

.tab.active {
  color: color-mix(in srgb, var(--accent-light) 78%, #fff 22%);
  border-bottom-color: color-mix(in srgb, var(--accent-light) 78%, transparent);
}

html.light .tab.active {
  color: var(--accent);
  border-bottom-color: color-mix(in srgb, var(--accent) 74%, transparent);
}

.topbar-right {
  display: flex;
  align-items: center;
  gap: 7px;
  margin-left: auto;
  min-width: 0;
}

@media (max-width: 1260px) {
  .model-lifecycle-heading {
    display: none;
  }
}

@media (max-width: 1200px) {
  .topbar .topbar-menu-toggle {
    display: inline-flex;
    flex-shrink: 0;
  }

  .topbar-collapse {
    display: none;
    position: absolute;
    left: 8px;
    right: 8px;
    top: calc(100% + 8px);
    z-index: 100;
    border-radius: 7px;
    border: var(--glass-pane-border);
    background: color-mix(in srgb, var(--glass-pane-bg) 96%, var(--surface-2) 4%);
    box-shadow: var(--glass-pane-highlight);
    backdrop-filter: var(--glass-pane-blur);
    -webkit-backdrop-filter: var(--glass-pane-blur);
    padding: 11px;
    flex-direction: column;
    align-items: stretch;
    gap: 11px;
    max-height: calc(100vh - var(--topbar-h) - 20px);
    overflow-y: auto;
  }

  .topbar.mobile-menu-open .topbar-collapse {
    display: flex;
  }

  .topbar-collapse .ide-menubar {
    flex-wrap: wrap;
  }

  .topbar-collapse .model-lifecycle {
    width: 100%;
    align-items: stretch;
    padding: 6px;
  }

  .topbar-collapse .model-lifecycle-heading {
    display: grid;
  }

  .topbar-collapse .model-lifecycle-tools {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    flex: 1 1 auto;
  }

  .topbar-collapse .model-lifecycle-group-actions {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .topbar-collapse .topbar-ide-btn {
    width: 100%;
  }

  .topbar-collapse .tabs {
    width: 100%;
  }

  .topbar-collapse .topbar-right {
    width: 100%;
    margin-left: 0;
    justify-content: flex-end;
  }
}

@media (max-width: 920px) {
  .topbar {
    min-height: var(--topbar-h);
    padding-top: var(--safe-area-top);
  }

  .topbar::after {
    left: 0;
  }

  .topbar-menu-strip {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 10px;
    min-height: var(--topbar-main-h);
    padding-inline: max(12px, var(--safe-area-left)) max(12px, var(--safe-area-right));
  }

  .topbar-left {
    flex: 0 1 auto;
    min-width: 0;
  }

  .topbar .topbar-menu-toggle {
    display: none !important;
  }

  .topbar-collapse {
    display: flex;
    position: static;
    left: auto;
    right: auto;
    top: auto;
    z-index: auto;
    border: 0;
    border-radius: 0;
    background: transparent;
    box-shadow: none;
    backdrop-filter: none;
    -webkit-backdrop-filter: none;
    padding: 0;
    flex-direction: row;
    align-items: center;
    max-height: none;
    gap: 7px;
    overflow-x: auto;
    overflow-y: visible;
    scrollbar-width: none;
  }

  /* Do not carry the tablet menu panel's full-width card into the inline
   * topbar layout. It otherwise paints a tinted layer over the rail junction. */
  .topbar-collapse .model-lifecycle {
    width: auto;
    align-items: center;
    padding: 3px;
    border-color: transparent;
    background: transparent;
    box-shadow: none;
  }

  .topbar-collapse::-webkit-scrollbar {
    display: none;
  }

  .topbar.mobile-menu-open .topbar-collapse {
    display: flex;
    position: fixed;
    left: 10px;
    right: 10px;
    top: calc(var(--topbar-h) + 8px);
    bottom: calc(var(--mobile-dock-h, 0px) + 10px);
    max-height: none;
    z-index: 95;
    border: var(--glass-pane-border);
    border-radius: 7px;
    background: color-mix(in srgb, var(--glass-pane-bg) 96%, var(--surface-2) 4%);
    box-shadow: var(--glass-pane-highlight);
    backdrop-filter: var(--glass-pane-blur);
    -webkit-backdrop-filter: var(--glass-pane-blur);
    padding: 11px;
  }

  .app-brand {
    padding-right: 0;
    margin-right: 0;
    border-right: none;
  }

  .app-logo-img {
    width: 28px;
  }

  .app-brand-name {
    font-size: 11px;
    letter-spacing: 0.1em;
  }

  .tabs {
    display: none;
  }

  .topbar .model-workbench-commandbar {
    flex: 0 0 auto;
    overflow: visible;
  }
}

@media (max-width: 760px) {
  .topbar-menu-strip {
    padding: 0 8px;
    gap: 8px;
  }

  .workspace.has-modeling-bar {
    --modeling-bar-h: 64px;
  }

  .modeling-context-bar {
    flex-wrap: wrap;
    align-items: flex-start;
    padding-block: 4px;
    gap: 4px 8px;
    min-height: 64px;
  }

  .validation-status-chip {
    margin-left: auto;
  }

  .app-brand-subtitle {
    display: none;
  }

  .tab {
    padding-inline: 7px;
  }
}

@media (max-width: 520px) {
  .app-brand-name {
    font-size: 11px;
  }

  .ide-menu-trigger {
    padding: 6px 8px;
  }

  .topbar-collapse .model-lifecycle {
    display: grid;
  }

  .topbar-collapse .model-lifecycle-tools {
    grid-template-columns: 1fr;
  }
}

/* ── Modeling context toolbar (canvas column) ── */

.modeling-context-bar {
  display: flex;
  align-items: stretch;
  gap: 12px;
  flex: 0 0 auto;
  min-height: 40px;
  padding: 0 14px;
  border-top: 1px solid color-mix(in srgb, var(--border) 46%, transparent);
  background: color-mix(in srgb, var(--surface-2) 26%, transparent);
  box-shadow: inset 0 1px 0 color-mix(in srgb, #fff 4%, transparent);
  backdrop-filter: blur(18px);
  -webkit-backdrop-filter: blur(18px);
  min-width: 0;
  overflow: visible;
  position: relative;
  z-index: 70;
  isolation: isolate;
}

.modeling-context-bar::before {
  content: "";
  position: absolute;
  inset: 0;
  /* background: linear-gradient(
    90deg,
    color-mix(in srgb, var(--accent) 6%, transparent),
    transparent 42%
  ); */
  opacity: 0.9;
  pointer-events: none;
  z-index: 0;
}

/* Keep the rail's rounded border above the toolbar when the palette is hidden. */
.workspace.palette-hidden .modeling-context-bar::after {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: var(--radius-md);
  height: var(--radius-md);
  border-top: 1px solid var(--workspace-bar-border-color);
  border-left: 1px solid var(--workspace-bar-border-color);
  border-top-left-radius: 100%;
  pointer-events: none;
  z-index: 2;
}

.topbar .modeling-context-bar .model-workbench-strip {
  display: contents;
}

.topbar .modeling-context-bar .model-workbench-commandbar {
  flex: 1 1 auto;
  min-height: 0;
  height: auto;
  overflow: visible;
}

.topbar .modeling-context-bar .validation-status-chip {
  align-self: center;
}

.modeling-context-bar > * {
  position: relative;
  z-index: 1;
}

.modeling-context-bar.hidden {
  display: none;
}

/* Modeling controls participate in the primary topbar row. */
.topbar .modeling-context-bar {
  display: contents;
}

.topbar .modeling-context-bar.hidden {
  display: none;
}

.modeling-context-bar .model-workbench-strip {
  flex: 1 1 auto;
  min-width: 0;
}

.validation-status-chip {
  flex: 0 0 auto;
  align-self: center;
  border: 1px solid color-mix(in srgb, var(--border) 70%, transparent);
  background: color-mix(in srgb, var(--surface-3) 88%, var(--surface) 12%);
  box-shadow: inset 0 1px 0 color-mix(in srgb, #fff 6%, transparent);
  border-radius: var(--radius-sm);
  min-height: 28px;
  padding: 0 10px;
  display: inline-flex;
  align-items: center;
  gap: 6px;
  cursor: pointer;
  color: var(--text);
  transition:
    border-color var(--transition),
    background var(--transition),
    color var(--transition);
}

.validation-status-chip:hover {
  border-color: color-mix(in srgb, var(--accent) 42%, var(--border) 58%);
  background: color-mix(in srgb, var(--surface-high) 82%, var(--surface-3) 18%);
  color: var(--text-strong);
}

.validation-status-content {
  display: inline-flex;
  align-items: center;
  gap: 7px;
}

.validation-status-chip.validation-is-running {
  flex-direction: column;
  align-items: stretch;
  gap: 4px;
  padding-block: 5px;
}

.validation-status-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  flex-shrink: 0;
  background: #22c55e;
}

.validation-status-text {
  font: 700 9px/1.1 var(--font-display);
  letter-spacing: 0.07em;
  text-transform: uppercase;
  white-space: nowrap;
}

.validation-state-error .validation-status-dot {
  background: #ef4444;
}

.validation-state-warning .validation-status-dot {
  background: #f59e0b;
}

.validation-state-ok .validation-status-dot {
  background: #22c55e;
}

.validation-status-progress {
  position: relative;
  overflow: hidden;
  border-radius: 2px;
  background: color-mix(in srgb, var(--surface-high) 72%, transparent);
  width: 100%;
  height: 2px;
}

.validation-status-progress::before {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(
    90deg,
    transparent 0%,
    color-mix(in srgb, var(--accent-light) 88%, #fff 12%) 45%,
    transparent 100%
  );
  transform: translateX(-100%);
  animation: validation-progress-sweep 1.15s linear infinite;
}

@media (max-width: 760px) {
  .modeling-context-bar {
    padding: 0;
    min-height: 0;
  }

  .topbar .model-workbench-commandbar {
    min-height: 0;
    overflow: visible;
  }

  .topbar .workbench-view-section {
    flex-basis: auto;
    order: initial;
  }

  .validation-status-chip {
    margin-left: auto;
  }
}