velxio/frontend/src/App.css

* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

body {
  background-color: var(--color-bg-canvas);
  color: var(--color-fg-default);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* ── App shell ──────────────────────────────────── */
.app {
  height: 100vh;
  display: flex;
  flex-direction: column;
  overflow: hidden;
  overscroll-behavior: none;
}

/* ── Header ─────────────────────────────────────── */
.app-header {
  background-color: rgba(0, 0, 0, 0.88);
  backdrop-filter: blur(20px) saturate(180%);
  -webkit-backdrop-filter: blur(20px) saturate(180%);
  border-bottom: 1px solid rgba(255, 255, 255, 0.09);
  padding: 0 16px;
  height: 44px;
  flex-shrink: 0;
  display: flex;
  align-items: center;
  position: relative;
  z-index: 100;
}

.header-content {
  display: flex;
  align-items: center;
  width: 100%;
}

.header-left {
  display: flex;
  align-items: center;
  gap: 16px;
}

.header-brand {
  display: flex;
  align-items: center;
  gap: 10px;
}

.header-title {
  font-size: 15px;
  font-weight: 600;
  color: #f5f5f7;
  letter-spacing: -0.2px;
}

/* Kept for backward compatibility */
.examples-link {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 6px 12px;
  background: transparent;
  color: #9d9d9d;
  text-decoration: none;
  border-radius: 5px;
  font-size: 13px;
  font-weight: 500;
  border: 1px solid #3a3a3a;
  transition: all 0.15s;
}

.examples-link:hover {
  background: #2a2d2e;
  color: #fff;
  border-color: #555;
}

/* ── Unified nav links ──────────────────────────── */
.header-nav-links {
  display: flex;
  align-items: center;
  gap: 2px;
}

.header-nav-link {
  display: flex;
  align-items: center;
  gap: 5px;
  padding: 5px 12px;
  color: #86868b;
  text-decoration: none;
  border-radius: 100px;
  font-size: 13px;
  font-weight: 400;
  transition:
    color 0.2s,
    background 0.2s;
  white-space: nowrap;
}

.header-nav-link:hover {
  color: #f5f5f7;
  background: rgba(255, 255, 255, 0.08);
}

.header-nav-link-active {
  color: #f5f5f7;
  background: rgba(255, 255, 255, 0.1);
}

.header-nav-discord {
  color: #7289da;
}

.header-nav-discord:hover {
  color: #8fa8f5;
  background: rgba(114, 137, 218, 0.1);
}

.header-right {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-left: auto;
}

/* Mobile hamburger */
.header-hamburger {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 4px;
  width: 30px;
  height: 30px;
  background: transparent;
  border: none;
  cursor: pointer;
  padding: 4px;
}

.header-hamburger span {
  display: block;
  height: 2px;
  background: #9d9d9d;
  border-radius: 2px;
  transition: background 0.15s;
}

.header-hamburger:hover span {
  background: #e0e0e0;
}

/* ── Unified top toolbar (desktop) ───────────────
   Editor controls + canvas controls share a single full-width row that does
   NOT reflow when the editor/canvas splitter below is dragged. The canvas
   side renders into the empty `.unified-toolbar-canvas` slot via a React
   portal from inside SimulatorCanvas. */
.unified-toolbar {
  display: flex;
  align-items: stretch;
  flex-shrink: 0;
  /* When the row genuinely cannot fit (narrow window + docked chat), wrap
     the canvas controls onto a second line instead of letting flexbox
     squeeze fixed blocks below their content — that used to crush the
     Code/Both/Circuit toggle to a third of its width, clipping two of its
     buttons into unreachable slivers. Two short rows beat hidden buttons. */
  flex-wrap: wrap;
  background: #252526;
  border-bottom: 1px solid #333;
  min-height: 38px;
  /* Query container so every zone (view-mode toggle, editor toolbar, canvas
     controls) can collapse based on the *shared bar's own width* — which is
     what shrinks when the right-docked AI chat opens — instead of the viewport
     width. Prevents the canvas controls (board selector, Serial, Scope) from
     overlapping the editor Run/Compile buttons on a narrow bar. `layout`
     containment (implied) does not clip: the overflow/run dropdowns still
     render below the bar. */
  container-type: inline-size;
  container-name: unified-toolbar;
}

/* Collapse the Code/Both/Circuit labels to icon-only first (biggest fixed
   block in the bar) as the shared bar narrows. */
@container unified-toolbar (max-width: 1140px) {
  .view-mode-toggle .vm-label {
    display: none;
  }
}

.unified-toolbar-explorer-toggle {
  border-bottom: none;
}

.unified-toolbar-editor {
  flex: 1 1 auto;
  /* Floor the editor zone at its fully-collapsed content width so it can never
     shrink *under* its own buttons and paint them over the adjacent canvas
     controls. Below this floor the (lower-priority) canvas controls get pushed
     toward the right edge instead of overlapping — never the other way. */
  min-width: 280px;
  display: flex;
}

.unified-toolbar-editor .editor-toolbar-wrapper,
.unified-toolbar-editor .editor-toolbar {
  flex: 1;
  min-width: 0;
}

.unified-toolbar-editor .editor-toolbar {
  border-bottom: none;
}

.unified-toolbar-canvas {
  flex-shrink: 0;
  display: flex;
  align-items: stretch;
  border-left: 1px solid #333;
}

/* ── Main panels container ──────────────────────── */
.app-container {
  flex: 1;
  display: flex;
  overflow: hidden;
  position: relative;
}

.editor-panel {
  display: flex;
  flex-direction: row;
  flex-shrink: 0;
  overflow: hidden;
  min-width: 20%;
  max-width: 80%;
}

/* Toggle button for the file explorer sidebar */
.explorer-toggle-btn {
  width: 36px;
  flex-shrink: 0;
  background: #252526;
  border: none;
  border-right: 1px solid #333;
  border-bottom: 1px solid #333;
  color: #7a7a7a;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition:
    background 0.1s,
    color 0.1s;
}

.explorer-toggle-btn:hover {
  background: #2a2d2e;
  color: #ccc;
}

/* Resize handle for the file explorer sidebar */
.explorer-resize-handle {
  width: 4px;
  flex-shrink: 0;
  cursor: col-resize;
  background: #2a2a2a;
  transition: background 0.15s;
  position: relative;
  z-index: 5;
}

.explorer-resize-handle:hover,
.explorer-resize-handle:active {
  background: var(--color-action-primary);
}

.editor-wrapper {
  flex: 1;
  overflow: hidden;
}

.simulator-panel {
  flex: 1;
  display: flex;
  flex-direction: column;
  overflow: hidden;
  min-width: 20%;
}

/* ── Resize handle ──────────────────────────────── */
.resize-handle {
  width: 5px;
  flex-shrink: 0;
  background: #2a2a2a;
  cursor: col-resize;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: background 0.15s;
  position: relative;
  z-index: 10;
}

.resize-handle:hover,
.resize-handle:active {
  background: var(--color-action-primary);
}

.resize-handle-grip {
  width: 2px;
  height: 32px;
  background: #444;
  border-radius: 2px;
  transition: background 0.15s;
}

.resize-handle:hover .resize-handle-grip,
.resize-handle:active .resize-handle-grip {
  background: rgba(255, 255, 255, 0.5);
}

/* ── Responsive ─────────────────────────────────── */
@media (max-width: 768px) {
  .app-container {
    flex-direction: column;
  }

  .editor-panel,
  .simulator-panel {
    width: 100% !important;
    min-width: unset;
    max-width: unset;
    flex: 1;
  }

  .resize-handle {
    display: none;
  }
}

/* ── Mobile tab bar ──────────────────────────────── */
.mobile-tab-bar {
  display: none;
}

@media (max-width: 768px) {
  .mobile-tab-bar {
    display: flex;
    flex-shrink: 0;
    height: 44px;
    background: #1e1e1e;
    border-bottom: 2px solid var(--color-action-primary);
    z-index: 50;
    /* Sits between header and panels */
  }

  .mobile-tab-btn {
    flex: 1;
    display: flex;
    flex-direction: row;
    align-items: center;
    justify-content: center;
    gap: 6px;
    background: transparent;
    border: none;
    border-bottom: 2px solid transparent;
    color: #7a7a7a;
    font-size: 13px;
    font-weight: 600;
    cursor: pointer;
    transition:
      color 0.15s,
      background 0.15s,
      border-color 0.15s;
    padding: 8px 0;
    margin-bottom: -2px;
  }

  .mobile-tab-btn--active {
    color: var(--color-action-primary);
    border-bottom-color: var(--color-action-primary);
    background: rgba(0, 113, 227, 0.1);
  }

  .mobile-tab-btn:active {
    background: rgba(255, 255, 255, 0.06);
  }
}

/* ── View-mode toggle: desktop only (mobile uses bottom-nav) ─────── */
@media (max-width: 768px) {
  .view-mode-toggle {
    display: none !important;
  }
}

/* ── Header responsive ───────────────────────────── */
@media (max-width: 768px) {
  .app-header {
    padding: 0 10px;
    height: 44px;
  }

  .examples-link span,
  .header-github-text,
  .header-username-text {
    display: none;
  }

  .examples-link {
    padding: 6px 8px;
  }

  /* Mobile nav: hide links, show hamburger, dropdown on open */
  .header-nav-links {
    display: none;
    position: absolute;
    top: 44px;
    left: 0;
    right: 0;
    background: rgba(0, 0, 0, 0.96);
    backdrop-filter: blur(20px);
    border-bottom: 1px solid rgba(255, 255, 255, 0.09);
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    padding: 6px 0;
    z-index: 200;
  }

  .header-nav-links.header-nav-open {
    display: flex;
  }

  .header-nav-link {
    padding: 10px 16px;
    border-radius: 0;
    font-size: 14px;
  }

  .header-hamburger {
    display: flex;
  }
}

@keyframes velxio-pulse {
  0%, 100% { opacity: 0.4; transform: scale(0.85); }
  50%      { opacity: 1.0; transform: scale(1.0); }
}

/* Marching-ants attention border (CameraToggle while it wants a click):
   four thin repeating-gradient strips, one per edge, sliding one dash
   period per cycle. Drawn as backgrounds rather than a border because a
   CSS border cannot animate its dash offset. Uses currentColor so the
   ants inherit the button's state colour (grey idle, red on error). */
@keyframes velxio-marching-ants {
  to { background-position: 12px 0, -12px 100%, 0 -12px, 100% 12px; }
}
.velxio-ants {
  background-image:
    repeating-linear-gradient(90deg, currentColor 0 6px, transparent 6px 12px),
    repeating-linear-gradient(90deg, currentColor 0 6px, transparent 6px 12px),
    repeating-linear-gradient(0deg, currentColor 0 6px, transparent 6px 12px),
    repeating-linear-gradient(0deg, currentColor 0 6px, transparent 6px 12px);
  background-repeat: repeat-x, repeat-x, repeat-y, repeat-y;
  background-size: 12px 1px, 12px 1px, 1px 12px, 1px 12px;
  background-position: 0 0, 0 100%, 0 0, 100% 0;
  animation: velxio-marching-ants 0.7s linear infinite;
}
@media (prefers-reduced-motion: reduce) {
  .velxio-ants { animation: none; }
}

/* ── Editor: toolbar riding inside the header ─────────────────────────────
   With the marketing nav gone from the editor header, its middle was dead
   space while the toolbar occupied a whole second bar. The strip now fills
   that middle: one 44px row instead of 44+38 — a full row returned to the
   code/canvas. The strip keeps its own class names (container queries, the
   docked-chat padding-right) and wraps internally when it truly cannot
   fit; the header then grows instead of clipping or overlapping. */
.app-header--with-toolbar {
  height: auto;
  min-height: 44px;
}

.header-editor-toolbar {
  flex: 1 1 auto;
  min-width: 0;
  display: flex;
  align-self: stretch;
  margin: 0 10px;
}

.header-editor-toolbar .unified-toolbar {
  flex: 1 1 auto;
  min-width: 0;
  /* Skin: it is part of the header now, not a bar of its own. */
  background: transparent;
  border-bottom: none;
  min-height: 44px;
  align-items: center;
}

/* Keep the brand block and the right-side controls pinned to the first
   line when the strip wraps the header taller. */
.app-header--with-toolbar .header-left,
.app-header--with-toolbar .header-right {
  align-self: flex-start;
  min-height: 44px;
  display: flex;
  align-items: center;
}

.app-header--with-toolbar .header-content {
  align-items: stretch;
}

/* The editor zone / toolbar inside the strip: no own chrome, blend into
   the header instead of painting a nested dark box with its own border. */
.header-editor-toolbar .editor-toolbar,
.header-editor-toolbar .unified-toolbar-editor .editor-toolbar {
  background: transparent;
  border-bottom: none;
  height: 44px;
}

/* ── Tight fallback for the in-header strip ──────────────────────────────
   Between "fits in one row" and "phone" there is an awkward middle (e.g.
   1440px with the chat docked) where flex-wrap produced an orphan group of
   canvas controls floating inside a tall transparent header, next to a
   dead hole before the right-side controls. Below the width where one row
   GENUINELY fits — thresholds account for the docked chat's reserved
   380px / 36px — the strip drops back to being its own full-width second
   bar with its old skin: exactly the familiar pre-merge layout, which
   reads as intentional instead of broken. Three blocks because a media
   query cannot test a body class in its condition. */

@media (max-width: 1039.9px) {
  .app-header--with-toolbar .header-content {
    flex-wrap: wrap;
  }
  .app-header--with-toolbar .header-editor-toolbar {
    flex-basis: 100%;
    order: 10;
    margin: 0 -16px;
  }
  .app-header--with-toolbar .header-editor-toolbar .unified-toolbar {
    background: #252526;
    border-top: 1px solid #333;
    min-height: 38px;
  }
}

@media (max-width: 1059.9px) {
  body.velxio-agent-collapsed .app-header--with-toolbar .header-content {
    flex-wrap: wrap;
  }
  body.velxio-agent-collapsed .app-header--with-toolbar .header-editor-toolbar {
    flex-basis: 100%;
    order: 10;
    margin: 0 -16px;
  }
  body.velxio-agent-collapsed .app-header--with-toolbar .header-editor-toolbar .unified-toolbar {
    background: #252526;
    border-top: 1px solid #333;
    min-height: 38px;
  }
}

@media (max-width: 1399.9px) {
  body.velxio-agent-open .app-header--with-toolbar .header-content {
    flex-wrap: wrap;
  }
  body.velxio-agent-open .app-header--with-toolbar .header-editor-toolbar {
    flex-basis: 100%;
    order: 10;
    margin: 0 -16px;
  }
  body.velxio-agent-open .app-header--with-toolbar .header-editor-toolbar .unified-toolbar {
    background: #252526;
    border-top: 1px solid #333;
    min-height: 38px;
  }
}

/* ── Editor corner box (bottom-left) ─────────────────────────────────────
   Language switcher + account button, IDE style. Moving them out of the
   header is what buys the toolbar the last ~150px it needed to keep the
   single-row layout on 1440px screens with the chat docked. */
.editor-corner-box {
  position: fixed;
  left: 8px;
  bottom: 8px;
  z-index: 7000; /* above the canvas, below the chat (8000) and modals */
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 4px 8px;
  background: rgba(23, 26, 33, 0.95);
  border: 1px solid #2f3542;
  border-radius: 8px;
  box-shadow: 0 4px 16px rgba(0, 0, 0, 0.35);
}

/* With the chat rising to the very top (agent CSS sets the header's
   padding-right), the strip must NOT also pad itself — that would double
   the reservation and squeeze the toolbar by another panel-width. */
.app-header--with-toolbar .header-editor-toolbar .unified-toolbar {
  padding-right: 6px !important;
}

/* ── Explorer account footer ─────────────────────────────────────────────
   The account + language block fused to the bottom of the file explorer:
   a long tree scrolls above it instead of hiding under a floating box.
   (.editor-corner-box remains as the fallback when the explorer is
   collapsed.) The standalone globe is a logged-out affordance only — once
   the pro auth slot renders its signed-in marker, language moves inside
   the account menu and the globe hides. */
.explorer-account-footer {
  flex-shrink: 0;
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 6px 8px;
  border-top: 1px solid #2f3542;
  background: #171a21;
}

.explorer-account-footer:has([data-auth-user]) .corner-lang,
.editor-corner-box:has([data-auth-user]) .corner-lang {
  display: none;
}