/* ==========================================================================
   Workbench layout: title bar, activity bar, sidebar, editor area,
   bottom panel and status bar.
   ========================================================================== */

.workbench {
  height: 100%;
  display: flex;
  flex-direction: column;
  --sidebar-width: 260px;
  --panel-height: 220px;
}

/* ---------- Title bar ---------- */
.titlebar {
  flex: none;
  height: 36px;
  display: grid;
  grid-template-columns: 1fr minmax(160px, 520px) 1fr;
  align-items: center;
  gap: 8px;
  padding: 0 max(8px, env(safe-area-inset-right, 0px)) 0 max(8px, env(safe-area-inset-left, 0px));
  background: var(--c-titlebar-bg);
  border-bottom: 1px solid var(--c-border);
  user-select: none;
}
.titlebar-left { display: flex; align-items: center; gap: 4px; min-width: 0; }
.titlebar-right { display: flex; justify-content: flex-end; gap: 2px; }
.logo { display: flex; padding: 0 6px 0 2px; }

.menubar { display: flex; min-width: 0; overflow: hidden; }
.menubar-item {
  padding: 4px 8px;
  border-radius: 4px;
  color: var(--c-fg);
  white-space: nowrap;
}
.menubar-item:hover,
.menubar-item.open { background: var(--c-hover); }

.command-center {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  height: 24px;
  min-width: 0;
  border-radius: 6px;
  border: 1px solid var(--c-border);
  background: var(--c-input-bg);
  color: var(--c-fg-muted);
}
.command-center:hover { border-color: var(--c-fg-muted); color: var(--c-fg); }
.command-center .cc-icon svg { width: 14px; height: 14px; }
.cc-label { overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }

/* ---------- Main row ---------- */
.main {
  flex: 1;
  display: flex;
  min-height: 0;
  position: relative;
}

.activitybar {
  flex: none;
  width: 48px;
  display: flex;
  flex-direction: column;
  align-items: center;
  padding: 4px 0 calc(4px + env(safe-area-inset-bottom, 0px));
  padding-left: env(safe-area-inset-left, 0px);
  box-sizing: content-box;
  background: var(--c-activity-bg);
  border-right: 1px solid var(--c-border);
}
.activity-btn {
  position: relative;
  width: 48px;
  height: 46px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--c-activity-fg);
}
.activity-btn svg { width: 24px; height: 24px; stroke-width: 1.5; }
.activity-btn:hover,
.activity-btn.active { color: var(--c-activity-active); }
.activity-btn.active::before {
  content: "";
  position: absolute;
  left: 0;
  top: 8px;
  bottom: 8px;
  width: 2px;
  background: var(--c-accent);
}
.activity-spacer { flex: 1; }

.sidebar {
  flex: none;
  width: var(--sidebar-width);
  min-width: 170px;
  max-width: 70vw;
  background: var(--c-sidebar-bg);
  display: flex;
  flex-direction: column;
  min-height: 0;
  overflow: hidden;
}
.workbench.sidebar-hidden .sidebar,
.workbench.sidebar-hidden #sidebar-sash { display: none; }

.sidebar-view {
  flex: 1;
  display: flex;
  flex-direction: column;
  min-height: 0;
}
.view-header {
  flex: none;
  height: 35px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 8px 0 18px;
  font-size: 11px;
  letter-spacing: .06em;
  text-transform: uppercase;
  color: var(--c-fg-muted);
}
.view-header .actions { display: flex; gap: 2px; }
.view-body { flex: 1; overflow: auto; min-height: 0; }

/* Drag handles */
.sash {
  flex: none;
  width: 4px;
  margin: 0 -2px;
  z-index: 5;
  cursor: col-resize;
  position: relative;
}
.sash:hover, .sash.dragging { background: var(--c-accent); }
.sash-h {
  width: auto;
  height: 4px;
  margin: -2px 0;
  cursor: row-resize;
}

/* ---------- Editor column ---------- */
.editor-column {
  flex: 1;
  min-width: 0;
  display: flex;
  flex-direction: column;
  border-left: 1px solid var(--c-border);
}
.editor-group {
  flex: 1;
  min-height: 0;
  display: flex;
  flex-direction: column;
  background: var(--c-bg);
}

.tabs-bar {
  flex: none;
  display: flex;
  height: 35px;
  background: var(--c-tab-bg);
  border-bottom: 1px solid var(--c-border);
}
.tabs {
  flex: 1;
  display: flex;
  overflow-x: auto;
  overflow-y: hidden;
  scrollbar-width: none;
}
.tabs::-webkit-scrollbar { display: none; }
.tabs-actions { flex: none; display: flex; align-items: center; gap: 2px; padding: 0 8px; }

.tab {
  flex: none;
  display: flex;
  align-items: center;
  gap: 6px;
  max-width: 220px;
  padding: 0 6px 0 12px;
  border-right: 1px solid var(--c-border);
  color: var(--c-fg-muted);
  cursor: pointer;
  position: relative;
  user-select: none;
}
.tab:hover { background: var(--c-hover); }
.tab.active {
  background: var(--c-tab-active-bg);
  color: var(--c-tab-active-fg);
}
.tab.active::after {
  content: "";
  position: absolute;
  left: 0; right: 0; top: 0;
  height: 2px;
  background: var(--c-accent);
}
.tab.dragging { opacity: .4; }
.tab.drop-target { box-shadow: inset 2px 0 0 var(--c-accent); }
.tab .tab-label { overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.tab .tab-close {
  width: 20px;
  height: 20px;
  border-radius: 4px;
  display: flex;
  align-items: center;
  justify-content: center;
  visibility: hidden;
}
.tab .tab-close svg { width: 14px; height: 14px; }
.tab:hover .tab-close,
.tab.active .tab-close { visibility: visible; }
.tab .tab-close:hover { background: var(--c-hover); }
.tab.dirty .tab-close { visibility: visible; }
.tab.dirty .tab-close svg { display: none; }
.tab.dirty .tab-close::before {
  content: "";
  width: 8px; height: 8px;
  border-radius: 50%;
  background: currentColor;
}
.tab.dirty .tab-close:hover::before { display: none; }
.tab.dirty .tab-close:hover svg { display: block; }

.breadcrumbs {
  flex: none;
  height: 24px;
  display: flex;
  align-items: center;
  gap: 2px;
  padding: 0 14px;
  color: var(--c-fg-muted);
  white-space: nowrap;
  overflow: hidden;
  font-size: 12px;
}
.breadcrumbs:empty { display: none; }
.crumb { padding: 1px 3px; border-radius: 3px; }
.crumb:hover { color: var(--c-fg); background: var(--c-hover); }
.crumb-sep { opacity: .6; }

.editors {
  flex: 1;
  min-height: 0;
  position: relative;
}

/* ---------- Bottom panel ---------- */
.panel {
  flex: none;
  height: var(--panel-height);
  min-height: 80px;
  max-height: 75%;
  display: flex;
  flex-direction: column;
  background: var(--c-bg);
  border-top: 1px solid var(--c-border);
}
.panel-header {
  flex: none;
  display: flex;
  align-items: center;
  gap: 4px;
  height: 34px;
  padding: 0 8px 0 12px;
}
.panel-tab {
  padding: 6px 8px;
  font-size: 11px;
  letter-spacing: .06em;
  text-transform: uppercase;
  color: var(--c-fg-muted);
  border-bottom: 1px solid transparent;
}
.panel-tab.active { color: var(--c-fg); border-bottom-color: var(--c-accent); }
.panel-header .spacer { flex: 1; }
.panel-body { flex: 1; min-height: 0; position: relative; }
.panel-output {
  position: absolute;
  inset: 0;
  overflow: auto;
  margin: 0;
  padding: 6px 16px 12px;
  font-family: var(--font-code);
  font-size: 12.5px;
  line-height: 1.55;
  white-space: pre-wrap;
  overflow-wrap: anywhere;
}
.panel-output .log-error { color: var(--c-error); }
.panel-output .log-warn { color: var(--c-warning); }
.panel-output .log-info { color: var(--c-fg-muted); }
.panel-output .log-system { color: var(--c-accent); }
.panel-output .log-success,
.panel-output .log-input { color: var(--c-success); }
.panel-output > div:empty { min-height: 1.55em; } /* keep blank lines visible */
.panel-header .stop-btn { color: var(--c-error); }
#run-btn.running { color: var(--c-success); }
.panel-preview {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  border: 0;
  background: #fff;
}

/* ---------- Status bar ---------- */
.statusbar {
  flex: none;
  height: calc(24px + env(safe-area-inset-bottom, 0px));
  padding: 0 max(6px, env(safe-area-inset-right, 0px)) env(safe-area-inset-bottom, 0px) max(6px, env(safe-area-inset-left, 0px));
  display: flex;
  align-items: center;
  gap: 2px;
  background: var(--c-statusbar-bg);
  color: var(--c-statusbar-fg);
  font-size: 12px;
  user-select: none;
}
.status-item {
  display: flex;
  align-items: center;
  gap: 5px;
  height: 22px;
  padding: 0 7px;
  border-radius: 3px;
  white-space: nowrap;
}
.status-item svg { width: 14px; height: 14px; }
button.status-item:hover { background: rgba(255, 255, 255, .12); }
.status-spacer { flex: 1; }

/* ---------- Phone / narrow screens ---------- */
@media (max-width: 760px) {
  .titlebar { grid-template-columns: auto 1fr auto; }
  .menubar { display: none; }
  .sidebar {
    position: absolute;
    top: 0;
    bottom: 0;
    left: calc(49px + env(safe-area-inset-left, 0px));
    z-index: 30;
    width: min(300px, calc(100vw - 60px));
    box-shadow: 8px 0 24px rgba(0, 0, 0, .35);
    border-right: 1px solid var(--c-border);
  }
  #sidebar-sash { display: none; }
  .activitybar { width: 44px; }
  .activity-btn { width: 44px; }
  .status-item.optional { display: none; }
  .tab { max-width: 160px; }
}