src/App.css

/* ============================
   Global & Base
============================ */

html, body, #root {
  margin: 0;
  padding: 0;
  overflow-x: hidden; /* prevent page-level horizontal scroll */
  box-sizing: border-box;
}

*,
*::before,
*::after {
  box-sizing: inherit;
}

.App {
  text-align: center;
}

/* Root layout */
.ide-root {
  height: 100vh;
  width: 100vw;
  display: flex;
  flex-direction: column;
  font-family: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  overflow: hidden;
  max-width: 100%;
}

/* Themes */
.ide-dark {
  background: #1e1e1e;
  color: #ddd;
}

.ide-light {
  background: #f5f5f5;
  color: #222;
}

/* ============================
   Menubar
============================ */

.ide-menubar {
  height: 32px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 10px;
  background: #252526;
  color: #eee;
  font-size: 13px;
  border-bottom: 1px solid #444;
  flex: 0 0 auto;
}

.ide-menubar-left,
.ide-menubar-right {
  display: flex;
  align-items: center;
  gap: 8px;
}

.ide-logo {
  font-weight: 600;
  margin-right: 12px;
}

.ide-menubar button {
  margin-right: 4px;
  background: transparent;
  border: none;
  color: inherit;
  cursor: pointer;
  padding: 2px 6px;
  border-radius: 3px;
  font-size: 13px;
}

.ide-menubar button:hover {
  background: rgba(255, 255, 255, 0.08);
}

/* ============================
   Body Layout
============================ */

.ide-body {
  flex: 1;
  display: flex;
  overflow: hidden;    /* prevent children from creating page overflow */
  min-height: 0;       /* allow children to shrink (important for flex) */
  max-width: 100%;
}

/* ============================
   Sidebar (Explorer)
============================ */

.ide-sidebar {
  flex: 0 0 210px;     /* fixed sidebar width */
  min-width: 0;        /* critical for preventing overflow from child */
  width: 210px;
  background: #252526;
  color: #ccc;
  padding: 5px;
  border-right: 1px solid #444;
  overflow-y: auto;
  font-size: 14px;
}

.tree-item {
  padding: 4px 6px;
  cursor: pointer;
  user-select: none;
  border-radius: 3px;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.tree-item:hover {
  background: #3a3d41;
}

/* ============================
   Main (Editor + Output)
============================ */

.ide-main {
  flex: 1 1 auto;
  display: flex;
  flex-direction: column;
  position: relative;
  min-width: 0;           /* CRITICAL: allow editor to shrink inside flex */
  overflow: hidden;
}

/* Monaco wrapper */
.ide-editor-wrapper {
  flex: 1 1 auto;
  min-height: 0;
  min-width: 0;           /* important for monaco inside flex */
  overflow: hidden;
}

/* Bottom panels (output, stdin, problems) */
.ide-panels {
  background: #1e1e1e;
  border-top: 1px solid #444;
  padding: 6px;
  font-size: 13px;
  height: 28%;
  overflow: auto;
  min-height: 120px;
  box-sizing: border-box;
  max-width: 100%;
}

.ide-output {
  background: #000;
  color: #0f0;
  padding: 6px;
  min-height: 60px;
  max-height: 120px;
  overflow-y: auto;
  border-radius: 4px;
  font-family: "Consolas", monospace;
  font-size: 12px;
  white-space: pre-wrap;
  word-break: break-word;
  max-width: 100%;
}

.ide-input-box {
  width: 100%;
  margin-top: 4px;
  padding: 6px;
  background: #111;
  border: 1px solid #444;
  color: #eee;
  border-radius: 3px;
  font-size: 12px;
  box-sizing: border-box;
}

/* Problems panel */
.ide-problems-panel {
  margin-top: 6px;
  padding: 8px;
  background: #3c0000;
  color: #fff;
  border-left: 3px solid red;
  font-size: 12px;
  border-radius: 3px;
  overflow: auto;
  white-space: pre-wrap;
  word-break: break-word;
}

/* ============================
   Terminal / XTerm container
============================ */

/* Ensure terminal fits container and doesn't push layout */
#terminal-container {
  width: 100% !important;
  max-width: 100% !important;
  box-sizing: border-box;
  overflow-x: auto; /* keep horizontal scroll inside terminal only */
  height: 180px;
  background: #1e1e1e;
  border-top: 1px solid #333;
  border-radius: 4px;
}

/* Terminal content wrapper (if you have a wrapper class) */
.terminal-content {
  width: 100%;
  max-width: 100%;
  overflow-x: auto;
  white-space: pre-wrap;
  word-break: break-word;
  font-family: "Consolas", monospace;
}

/* ============================
   Right AI Panel
============================ */

.ide-right-panel {
  flex: 0 0 280px;
  min-width: 0;
  width: 280px;
  border-left: 1px solid #444;
  background: #252526;
  padding: 8px;
  display: flex;
  flex-direction: column;
  gap: 8px;
  font-size: 13px;
  overflow: auto;
}

.ide-ai-header {
  font-weight: 600;
  margin-bottom: 4px;
}

.ide-ai-section {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.ide-ai-label {
  font-size: 12px;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  opacity: 0.8;
}

/* AI instruction textarea */
.ide-agent-textarea {
  width: 100%;
  min-height: 80px;
  max-height: 160px;
  resize: vertical;
  padding: 6px;
  border-radius: 4px;
  border: 1px solid #444;
  background: #1e1e1e;
  color: #eee;
  font-family: Consolas, monospace;
  font-size: 12px;
  box-sizing: border-box;
}

/* AI buttons */
.ide-ai-buttons {
  display: flex;
  gap: 6px;
}

.ide-ai-buttons button {
  flex: 1;
  padding: 6px;
  font-size: 12px;
  border-radius: 4px;
  border: 1px solid #555;
  background: #0e639c;
  color: #fff;
  cursor: pointer;
}

.ide-ai-buttons button:hover {
  background: #1177bb;
}

/* AI explanation box */
.ide-explain {
  max-height: 180px;
  overflow-y: auto;
  padding: 6px;
  border-radius: 4px;
  background: #1e1e1e;
  border: 1px solid #444;
  font-size: 12px;
  color: #eee;
  font-family: Consolas, monospace;
}

/* ============================
   AI Suggestions Popup
============================ */

.ai-popup {
  position: absolute;
  bottom: 35%;
  right: 5px;
  width: 230px;
  background: #333;
  border: 1px solid #444;
  border-radius: 6px;
  padding: 4px;
  animation: fadeIn 0.25s ease-in-out;
  font-size: 12px;
  z-index: 200; /* ensure it sits above other UI */
  max-width: calc(100vw - 24px);
  box-sizing: border-box;
}

.ai-suggest {
  padding: 4px;
  cursor: pointer;
}

.ai-suggest:hover {
  background: #444;
}

/* ============================
   Search Dialog
============================ */

.search-dialog {
  position: absolute;
  right: 10px;
  top: 50px;
  background: #333;
  padding: 10px;
  border: 1px solid #444;
  border-radius: 5px;
  z-index: 300;
  max-width: calc(100vw - 24px);
  box-sizing: border-box;
}

.search-dialog input {
  width: 200px;
  padding: 4px 6px;
  border-radius: 3px;
  border: 1px solid #555;
  background: #1e1e1e;
  color: #eee;
}

/* ============================
   Context Menu
============================ */

.ide-context-menu {
  position: absolute;
  background: #333;
  color: #eee;
  border: 1px solid #555;
  border-radius: 5px;
  padding: 4px;
  z-index: 400;
  max-width: calc(100vw - 24px);
  box-sizing: border-box;
}

.ide-context-menu div {
  padding: 4px 8px;
  cursor: pointer;
  font-size: 13px;
}

.ide-context-menu div:hover {
  background: #555;
}

/* ============================
   Progress / Spinner
============================ */

.ide-progress-wrap {
  height: 3px;
  background: transparent;
  width: 100%;
  position: relative;
  overflow: hidden;
}
.ide-progress {
  position: absolute;
  height: 3px;
  width: 30%;
  left: -30%;
  top: 0;
  background: linear-gradient(90deg, #0e9, #08f);
  animation: progress-slide 1.2s linear infinite;
  border-radius: 2px;
}

@keyframes progress-slide {
  0% { left: -30%; width: 30%; }
  50% { left: 35%; width: 40%; }
  100% { left: 100%; width: 30%; }
}

/* ---------- small inline spinner (optional) ---------- */
.button-spinner {
  display: inline-block;
  width: 12px;
  height: 12px;
  border: 2px solid rgba(255,255,255,0.25);
  border-top-color: rgba(255,255,255,0.95);
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
  margin-left: 6px;
  vertical-align: middle;
}

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

/* ============================
   Misc: Text wrapping & safety
============================ */

.ide-output, .ide-explain, .ide-problems-panel, .tree-item, .ai-popup, .ai-suggest {
  overflow-wrap: break-word;
  word-break: break-word;
  white-space: pre-wrap;
}

/* Buttons, inputs, selects must not exceed container */
button, input, textarea, select {
  max-width: 100%;
  box-sizing: border-box;
}

/* Final safety: hide any stray horizontal overflow */
#root, .ide-root, .ide-body, .ide-main { overflow-x: hidden; }

/* ============================
   📱 Mobile / Tablet Responsive
============================ */

@media (max-width: 900px) {
  /* Stack layout vertically on small screens */
  .ide-body { flex-direction: column; }

  /* Sidebar becomes top strip */
  .ide-sidebar {
    width: 100%;
    flex: 0 0 auto;
    max-height: 22vh;
    border-right: none;
    border-bottom: 1px solid #444;
  }

  .ide-main { order: 2; min-height: 40vh; }
  .ide-editor-wrapper { height: 40vh; }

  /* Bottom panels adapt */
  .ide-panels { height: auto; max-height: 26vh; }

  /* Right panel becomes bottom full width */
  .ide-right-panel {
    width: 100%;
    order: 3;
    border-left: none;
    border-top: 1px solid #444;
  }

  .ai-popup { right: 8px; left: 8px; width: auto; max-width: calc(100vw - 16px); }
  .search-dialog { right: 8px; left: 8px; width: auto; }
  .ide-context-menu { max-width: 70vw; }
}

/* Small-screen tweak for very small devices */
@media (max-width: 420px) {
  .ide-menubar { font-size: 12px; padding: 0 6px; }
  .ide-ai-buttons button, .ide-menubar button { padding: 4px; font-size: 12px; }
}