:root {
  --bg-main: #0d0d12;
  --bg-panel: #131318;
  --bg-editor: #0f0f15;
  --bg-sidebar: #0a0a0f;
  --bg-hover: #1a1a24;
  --bg-active: #1e1e2e;
  --accent: #a78bfa;
  --accent-dim: #7c3aed;
  --accent-glow: rgba(167,139,250,0.15);
  --green: #22c55e;
  --green-dim: rgba(34,197,94,0.15);
  --red: #f87171;
  --red-dim: rgba(248,113,113,0.15);
  --yellow: #fbbf24;
  --cyan: #0891b2;
  --orange: #fb923c;
  --text-primary: #e2e8f0;
  --text-secondary: #94a3b8;
  --text-muted: #475569;
  --border: rgba(148,163,184,0.08);
  --border-bright: rgba(167,139,250,0.2);
  --line-num: #3d3d52;
  --scrollbar: rgba(100,100,140,0.2);
  --font-mono: 'JetBrains Mono', 'Fira Code', monospace;
  --font-ui: 'Outfit', sans-serif;
  --radius: 6px;
  --transition: 0.15s cubic-bezier(0.4, 0, 0.2, 1);
}

body.light-mode {
  --bg-main: #f8f8fc;
  --bg-panel: #f0f0f5;
  --bg-editor: #ffffff;
  --bg-sidebar: #e8e8f0;
  --bg-hover: #e0e0ec;
  --bg-active: #d8d8ee;
  --accent: #7c3aed;
  --accent-dim: rgba(124,58,237,0.12);
  --accent-glow: rgba(124,58,237,0.15);
  --green: #15803d;
  --green-dim: rgba(21,128,61,0.12);
  --red: #dc2626;
  --red-dim: rgba(220,38,38,0.10);
  --yellow: #b45309;
  --cyan: #0369a1;
  --text-primary: #1e1b2e;
  --text-secondary: #4a4a6a;
  --text-muted: #7a7a9a;
  --border: rgba(0,0,0,0.08);
  --border-bright: rgba(124,58,237,0.25);
  --line-num: #9999bb;
  --scrollbar: rgba(0,0,0,0.12);
}

/* syntax colours in light mode */
body.light-mode .kw    { color: #6d28d9; }
body.light-mode .kw2   { color: #4338ca; }
body.light-mode .str   { color: #15803d; }
body.light-mode .num   { color: #b45309; }
body.light-mode .bool  { color: #c2410c; }
body.light-mode .op    { color: #0369a1; }
body.light-mode .comment { color: #71717a; }
body.light-mode .type  { color: #b45309; }
body.light-mode .fn    { color: #0369a1; }
body.light-mode .ident { color: #1e1b2e; }
body.light-mode .arrow { color: #6d28d9; }
body.light-mode .punc  { color: #4a4a6a; }
body.light-mode #code-input { color: transparent; caret-color: #6d28d9; }

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

html, body {
  height: 100%;
  background: var(--bg-main);
  color: var(--text-primary);
  font-family: var(--font-ui);
  overflow: hidden;
  font-size: 14px;
}

/* ======== LAYOUT ======== */
#app {
  display: flex;
  height: 100vh;
  overflow: hidden;
}

/* TITLE BAR */
#titlebar {
  position: fixed;
  top: 0; left: 0; right: 0;
  height: 38px;
  background: var(--bg-sidebar);
  border-bottom: 1px solid var(--border);
  display: flex;
  align-items: center;
  padding: 0 12px;
  z-index: 100;
  gap: 16px;
  user-select: none;
}
#titlebar .logo {
  display: flex;
  align-items: center;
  gap: 8px;
  font-weight: 700;
  font-size: 13px;
  color: var(--accent);
  letter-spacing: 0.5px;
}
#titlebar .logo svg { width: 20px; height: 20px; }
#titlebar .title-center {
  flex: 1;
  text-align: center;
  font-size: 12px;
  color: var(--text-muted);
  font-family: var(--font-mono);
}
#titlebar .title-actions {
  display: flex;
  gap: 6px;
}
.title-btn {
  background: transparent;
  border: 1px solid var(--border);
  color: var(--text-secondary);
  font-family: var(--font-ui);
  font-size: 11px;
  padding: 3px 10px;
  border-radius: var(--radius);
  cursor: pointer;
  transition: var(--transition);
  display: flex;
  align-items: center;
  gap: 5px;
}
.title-btn:hover { background: var(--bg-hover); color: var(--text-primary); border-color: var(--border-bright); }
.title-btn.accent { background: var(--accent-dim); border-color: var(--accent); color: var(--accent); }
.title-btn.accent:hover { background: var(--accent); color: #fff; }

/* MAIN CONTENT (below titlebar) */
#main-content {
  display: flex;
  flex: 1;
  margin-top: 38px;
  height: calc(100vh - 38px);
  overflow: hidden;
}

/* ACTIVITY BAR */
#activity-bar {
  width: 44px;
  background: var(--bg-sidebar);
  border-right: 1px solid var(--border);
  display: flex;
  flex-direction: column;
  align-items: center;
  padding: 8px 0;
  gap: 4px;
  flex-shrink: 0;
}
.activity-btn {
  width: 36px;
  height: 36px;
  background: transparent;
  border: none;
  border-radius: var(--radius);
  color: var(--text-muted);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: var(--transition);
  position: relative;
}
.activity-btn:hover { background: var(--bg-hover); color: var(--text-secondary); }
.activity-btn.active { background: var(--accent-glow); color: var(--accent); }
.activity-btn svg { width: 18px; height: 18px; }

/* SIDEBAR PANEL */
#sidebar-panel {
  width: 220px;
  background: var(--bg-panel);
  border-right: 1px solid var(--border);
  display: flex;
  flex-direction: column;
  flex-shrink: 0;
  overflow: hidden;
  transition: width 0.2s ease;
}
#sidebar-panel.collapsed { width: 0; }
.sidebar-header {
  padding: 10px 12px;
  font-size: 10px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 1.5px;
  color: var(--text-muted);
  border-bottom: 1px solid var(--border);
  flex-shrink: 0;
}
.sidebar-content {
  flex: 1;
  overflow-y: auto;
  padding: 8px;
}
.sidebar-content::-webkit-scrollbar { width: 4px; }
.sidebar-content::-webkit-scrollbar-thumb { background: var(--scrollbar); border-radius: 2px; }

/* SNIPPET ITEMS */
.snippet-category {
  font-size: 10px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 1px;
  color: var(--accent);
  padding: 8px 4px 4px;
}
.snippet-item {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 6px 8px;
  border-radius: var(--radius);
  cursor: pointer;
  transition: var(--transition);
  font-size: 12px;
  color: var(--text-secondary);
  border: 1px solid transparent;
}
.snippet-item:hover {
  background: var(--bg-hover);
  color: var(--text-primary);
  border-color: var(--border);
}
.snippet-item svg { width: 14px; height: 14px; color: var(--accent); flex-shrink: 0; }

/* SETTINGS PANEL */
.settings-item {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 8px 4px;
  border-bottom: 1px solid var(--border);
  font-size: 12px;
  color: var(--text-secondary);
}
.settings-item label { color: var(--text-secondary); }
.toggle {
  position: relative;
  width: 32px;
  height: 18px;
}
.toggle input { opacity: 0; width: 0; height: 0; }
.slider {
  position: absolute;
  inset: 0;
  background: var(--bg-hover);
  border-radius: 9px;
  border: 1px solid var(--border);
  cursor: pointer;
  transition: var(--transition);
}
.slider:before {
  content: '';
  position: absolute;
  width: 12px; height: 12px;
  left: 2px; top: 2px;
  background: var(--text-muted);
  border-radius: 50%;
  transition: var(--transition);
}
input:checked + .slider { background: var(--accent-dim); border-color: var(--accent); }
input:checked + .slider:before { transform: translateX(14px); background: var(--accent); }

select.settings-select {
  background: var(--bg-hover);
  border: 1px solid var(--border);
  color: var(--text-primary);
  font-family: var(--font-ui);
  font-size: 11px;
  padding: 2px 6px;
  border-radius: 4px;
  cursor: pointer;
}

/* EDITOR AREA */
#editor-area {
  flex: 1;
  display: flex;
  flex-direction: column;
  overflow: hidden;
  min-width: 0;
}

/* EDITOR TABS */
#editor-tabs {
  height: 34px;
  background: var(--bg-panel);
  border-bottom: 1px solid var(--border);
  display: flex;
  align-items: stretch;
  flex-shrink: 0;
}
.editor-tab {
  display: flex;
  align-items: center;
  padding: 0 16px;
  font-size: 12px;
  color: var(--text-muted);
  cursor: pointer;
  border-right: 1px solid var(--border);
  gap: 6px;
  white-space: nowrap;
  font-family: var(--font-mono);
  position: relative;
}
.editor-tab.active {
  background: var(--bg-editor);
  color: var(--text-primary);
}
.editor-tab.active::after {
  content: '';
  position: absolute;
  bottom: 0; left: 0; right: 0;
  height: 2px;
  background: var(--accent);
}
.tab-dot { width: 6px; height: 6px; border-radius: 50%; background: var(--accent); }

/* EDITOR */
#editor-container {
  flex: 1;
  overflow: hidden;
  position: relative;
}
#code-editor {
  width: 100%;
  height: 100%;
  background: var(--bg-editor);
  border: none;
  outline: none;
  resize: none;
  font-family: var(--font-mono);
  font-size: 14px;
  line-height: 1.7;
  color: var(--text-primary);
  padding: 0;
  overflow: hidden;
}
#editor-inner {
  width: 100%;
  height: 100%;
  display: flex;
  overflow: hidden;
}
#line-numbers {
  width: 48px;
  background: var(--bg-editor);
  padding: 14px 0;
  text-align: right;
  font-family: var(--font-mono);
  font-size: 13px;
  line-height: 1.7;
  color: var(--line-num);
  user-select: none;
  flex-shrink: 0;
  overflow: hidden;
  border-right: 1px solid var(--border);
}
#line-numbers span {
  display: block;
  padding-right: 10px;
  height: calc(13px * 1.7);
}
#line-numbers span.active-line { color: var(--text-secondary); }
#code-input {
  flex: 1;
  background: transparent;
  border: none;
  outline: none;
  resize: none;
  font-family: var(--font-mono);
  font-size: 13px;
  line-height: 1.7;
  color: transparent;
  caret-color: var(--accent);
  padding: 14px 16px;
  overflow-y: auto;
  overflow-x: auto;
  white-space: pre;
  position: absolute;
  inset: 0;
  padding-left: 64px;
  z-index: 2;
  spellcheck: false;
}
#code-highlight {
  flex: 1;
  padding: 14px 16px;
  padding-left: 64px;
  font-family: var(--font-mono);
  font-size: 13px;
  line-height: 1.7;
  white-space: pre;
  overflow: hidden;
  pointer-events: none;
  position: absolute;
  inset: 0;
  z-index: 1;
}
#code-input::-webkit-scrollbar { width: 8px; height: 8px; }
#code-input::-webkit-scrollbar-track { background: transparent; }
#code-input::-webkit-scrollbar-thumb { background: var(--scrollbar); border-radius: 4px; }

/* Error highlight line */
.error-line { background: rgba(248,113,113,0.07); }
.error-underline { text-decoration: wavy underline var(--red); }

/* STATUS BAR */
#status-bar {
  height: 22px;
  background: var(--bg-sidebar);
  border-top: 1px solid var(--border);
  display: flex;
  align-items: center;
  padding: 0 12px;
  gap: 16px;
  font-size: 11px;
  color: var(--text-muted);
  flex-shrink: 0;
  font-family: var(--font-mono);
}
#status-bar .status-item { display: flex; align-items: center; gap: 4px; }
#status-bar .status-item.accent { color: var(--accent); }
#status-bar .status-item.green { color: var(--green); }
#status-bar .status-item.red { color: var(--red); }

/* RIGHT PANEL */
#right-panel {
  width: 320px;
  min-width: 220px;
  max-width: 700px;
  background: var(--bg-panel);
  border-left: 1px solid var(--border);
  display: flex;
  flex-direction: column;
  flex-shrink: 0;
  overflow: hidden;
}

/* RESIZE HANDLE — sits between editor-area and right-panel */
#right-resizer {
  width: 5px;
  flex-shrink: 0;
  background: transparent;
  cursor: col-resize;
  position: relative;
  transition: background var(--transition);
  z-index: 10;
}
#right-resizer::after {
  content: '';
  position: absolute;
  inset: 0 1px;
  background: var(--border);
  transition: background var(--transition);
}
#right-resizer:hover::after,
#right-resizer.dragging::after {
  background: var(--accent);
}
#right-tabs {
  display: flex;
  background: var(--bg-sidebar);
  border-bottom: 1px solid var(--border);
  flex-shrink: 0;
}
.right-tab {
  flex: 1;
  padding: 8px;
  text-align: center;
  font-size: 11px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.8px;
  color: var(--text-muted);
  cursor: pointer;
  transition: var(--transition);
  border-bottom: 2px solid transparent;
}
.right-tab:hover { color: var(--text-secondary); }
.right-tab.active { color: var(--accent); border-bottom-color: var(--accent); }
#right-content {
  flex: 1;
  overflow: hidden;
  display: flex;
  flex-direction: column;
}
.right-pane { display: none; flex: 1; flex-direction: column; overflow: hidden; }
.right-pane.active { display: flex; }

/* CONSOLE */
#console-output {
  flex: 1;
  overflow-y: auto;
  padding: 10px 12px;
  font-family: var(--font-mono);
  font-size: 12px;
  line-height: 1.8;
}
#console-output::-webkit-scrollbar { width: 4px; }
#console-output::-webkit-scrollbar-thumb { background: var(--scrollbar); border-radius: 2px; }
.console-line {
  padding: 1px 0;
  border-radius: 3px;
  white-space: pre-wrap;
  word-break: break-all;
}
.console-line.output { color: var(--text-primary); }
.console-line.output::before { content: '▶ '; color: var(--green); font-size: 10px; }
.console-line.error { color: var(--red); background: var(--red-dim); padding: 2px 6px; border-left: 2px solid var(--red); border-radius: 3px; }
.console-line.info { color: var(--text-muted); }
.console-line.input-line { color: var(--cyan); }
.console-line.input-line::before { content: '◀ '; color: var(--cyan); font-size: 10px; }

/* INPUT FIELD in console */
#input-form {
  border-top: 1px solid var(--border);
  padding: 8px 12px;
  display: none;
  flex-shrink: 0;
}
#input-form.visible { display: flex; gap: 8px; align-items: center; }
#input-prompt-label {
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--cyan);
  white-space: nowrap;
  flex-shrink: 0;
}
#input-field {
  flex: 1;
  background: var(--bg-editor);
  border: 1px solid var(--border-bright);
  border-radius: 4px;
  color: var(--cyan);
  font-family: var(--font-mono);
  font-size: 12px;
  padding: 4px 8px;
  outline: none;
}
#input-field:focus { border-color: var(--accent); }
#input-submit {
  background: var(--accent-dim);
  border: 1px solid var(--accent);
  color: var(--accent);
  font-family: var(--font-ui);
  font-size: 11px;
  padding: 4px 10px;
  border-radius: 4px;
  cursor: pointer;
  transition: var(--transition);
  flex-shrink: 0;
}
#input-submit:hover { background: var(--accent); color: #fff; }

/* TRACE TABLE */
#trace-container {
  flex: 1;
  overflow: auto;
  padding: 8px;
}
#trace-container::-webkit-scrollbar { width: 4px; height: 4px; }
#trace-container::-webkit-scrollbar-thumb { background: var(--scrollbar); border-radius: 2px; }
#trace-table {
  width: 100%;
  border-collapse: collapse;
  font-family: var(--font-mono);
  font-size: 11px;
}
#trace-table th {
  background: var(--bg-active);
  color: var(--accent);
  padding: 5px 8px;
  text-align: left;
  border: 1px solid var(--border);
  position: sticky;
  top: 0;
  font-weight: 600;
  font-size: 10px;
  text-transform: uppercase;
  letter-spacing: 0.8px;
}
#trace-table td {
  padding: 4px 8px;
  border: 1px solid var(--border);
  color: var(--text-secondary);
  white-space: nowrap;
}
#trace-table tr:hover td { background: var(--bg-hover); color: var(--text-primary); }
#trace-table .val-changed td { color: var(--green); }
.trace-cell-changed {
  color: var(--green) !important;
  font-weight: 600;
}
.trace-hint {
  color: var(--text-muted);
  font-size: 12px;
  text-align: center;
  padding: 24px;
  font-family: var(--font-ui);
}

/* ACTION BAR */
#action-bar {
  border-top: 1px solid var(--border);
  padding: 10px 12px;
  display: flex;
  gap: 8px;
  flex-shrink: 0;
  background: var(--bg-sidebar);
}
.action-btn {
  flex: 1;
  padding: 8px;
  border-radius: var(--radius);
  border: 1px solid var(--border);
  font-family: var(--font-ui);
  font-size: 12px;
  font-weight: 600;
  cursor: pointer;
  transition: var(--transition);
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  letter-spacing: 0.3px;
}
.action-btn svg { width: 14px; height: 14px; }
#btn-run {
  background: var(--green-dim);
  border-color: var(--green);
  color: var(--green);
}
#btn-run:hover { background: var(--green); color: #000; }
#btn-run:disabled { opacity: 0.4; cursor: not-allowed; }
#btn-step {
  background: transparent;
  color: var(--accent);
  border-color: var(--accent);
}
#btn-step:hover { background: var(--accent-glow); }
#btn-reset {
  background: transparent;
  color: var(--text-secondary);
  border-color: var(--border);
}
#btn-reset:hover { background: var(--bg-hover); color: var(--text-primary); }

/* INLINE INPUT MODAL */
#input-modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.6);
  display: none;
  align-items: center;
  justify-content: center;
  z-index: 1000;
  backdrop-filter: blur(4px);
}
#input-modal-overlay.visible { display: flex; }
#input-modal {
  background: var(--bg-panel);
  border: 1px solid var(--border-bright);
  border-radius: 10px;
  padding: 24px;
  width: 360px;
  box-shadow: 0 24px 64px rgba(0,0,0,0.6), 0 0 0 1px rgba(167,139,250,0.1);
}
#input-modal h3 {
  font-size: 13px;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 4px;
}
#input-modal p {
  font-size: 12px;
  color: var(--text-muted);
  font-family: var(--font-mono);
  margin-bottom: 14px;
}
#modal-input {
  width: 100%;
  background: var(--bg-editor);
  border: 1px solid var(--border-bright);
  border-radius: var(--radius);
  color: var(--text-primary);
  font-family: var(--font-mono);
  font-size: 14px;
  padding: 8px 12px;
  outline: none;
  margin-bottom: 12px;
}
#modal-input:focus { border-color: var(--accent); box-shadow: 0 0 0 2px var(--accent-glow); }
#modal-submit {
  width: 100%;
  padding: 9px;
  background: var(--accent-dim);
  border: 1px solid var(--accent);
  border-radius: var(--radius);
  color: var(--accent);
  font-family: var(--font-ui);
  font-size: 13px;
  font-weight: 600;
  cursor: pointer;
  transition: var(--transition);
}
#modal-submit:hover { background: var(--accent); color: #fff; }

/* Syntax colors */
.kw { color: #c084fc; font-weight: 500; } /* keywords */
.kw2 { color: #818cf8; } /* secondary keywords */
.str { color: #86efac; } /* strings */
.num { color: #fca5a5; } /* numbers */
.bool { color: #fb923c; } /* booleans */
.op { color: #67e8f9; } /* operators */
.comment { color: #4b5563; font-style: italic; }
.type { color: #fbbf24; } /* types */
.fn { color: #67e8f9; } /* functions */
.ident { color: #e2e8f0; } /* identifiers */
.arrow { color: #c084fc; font-weight: bold; } /* <- */
.punc { color: #94a3b8; }

/* TOOLTIP */
.tooltip {
  position: absolute;
  left: 44px;
  background: var(--bg-active);
  border: 1px solid var(--border-bright);
  color: var(--text-primary);
  font-size: 11px;
  padding: 4px 8px;
  border-radius: 4px;
  white-space: nowrap;
  pointer-events: none;
  opacity: 0;
  transition: opacity 0.15s;
  z-index: 200;
}
.activity-btn:hover .tooltip { opacity: 1; }

/* SCROLLBAR */
::-webkit-scrollbar { width: 6px; height: 6px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb { background: var(--scrollbar); border-radius: 3px; }

/* WELCOME STATE */
.console-welcome {
  color: var(--text-muted);
  font-family: var(--font-mono);
  font-size: 11px;
  padding: 12px 0;
  border-bottom: 1px solid var(--border);
  margin-bottom: 8px;
}
.console-welcome .welcome-title { color: var(--accent); font-size: 12px; margin-bottom: 4px; }

/* LINTER BADGE */
#linter-badge {
  display: flex;
  align-items: center;
  gap: 4px;
  font-family: var(--font-mono);
  font-size: 11px;
}
#linter-badge.ok { color: var(--green); }
#linter-badge.warn { color: var(--yellow); }
#linter-badge.err { color: var(--red); }

/* ======================================================
   RESPONSIVE — TABLET & MOBILE
   ====================================================== */

/* ---- Tablet: up to 1024px ---- */
@media (max-width: 1024px) {
  #sidebar-panel { width: 180px; }
  #right-panel { width: 260px; min-width: 180px; }

  /* Hide external nav links to save titlebar space */
  a.title-btn { display: none; }
}

@media (max-width: 860px) {
  #sidebar-panel { width: 0; }
  #sidebar-panel.collapsed { width: 0; }
}

/* ---- Mobile: ≤ 640px ---- */
@media (max-width: 640px) {

  /* TITLEBAR — taller for touch, simplified */
  #titlebar {
    height: 46px;
    padding: 0 10px;
    gap: 8px;
  }
  /* Hide logo text, keep icon */
  #titlebar .logo span { display: none; }
  /* Hide filename in center */
  .title-center { display: none; }
  /* Hide Save, Export, Logic Gates, Flowcharts — keep only Run */
  .title-actions .title-btn:not(.accent) { display: none; }
  .title-btn.accent { padding: 7px 16px; font-size: 12px; }

  /* MAIN CONTENT — adjusted for taller titlebar + bottom nav */
  #main-content {
    margin-top: 46px;
    height: calc(100dvh - 46px - 50px);
    position: relative;
    overflow: hidden;
  }

  /* Hide desktop-only chrome */
  #activity-bar { display: none; }
  #right-resizer { display: none; }

  /* EDITOR — takes all available space */
  #editor-area {
    width: 100%;
    flex: 1;
    min-width: 0;
  }

  /* Status bar: hide less important items */
  #status-bar .status-item:first-child { display: none; }
  #char-count { display: none; }

  /* SIDEBAR PANEL — full-screen overlay when active */
  #sidebar-panel {
    position: fixed !important;
    top: 46px;
    left: 0;
    right: 0;
    bottom: 50px;
    width: 100% !important;
    z-index: 60;
    display: none !important;
    transition: none !important;
  }
  #sidebar-panel.mobile-visible { display: flex !important; }

  /* RIGHT PANEL — full-screen overlay when active */
  #right-panel {
    position: fixed !important;
    top: 46px;
    left: 0;
    right: 0;
    bottom: 50px;
    width: 100% !important;
    min-width: 0;
    max-width: none;
    z-index: 60;
    display: none !important;
  }
  #right-panel.mobile-visible { display: flex !important; }

  /* Bigger touch targets in action bar */
  #action-bar { padding: 10px 12px; gap: 10px; }
  .action-btn { padding: 13px 8px; font-size: 13px; }
  .action-btn svg { width: 16px; height: 16px; }

  /* Editor font comfortable on small screens */
  #code-input, #code-highlight { font-size: 14px; }
  #line-numbers { font-size: 13px; }

  /* Input modal fits phone width */
  #input-modal { width: calc(100vw - 32px); }
  #modal-input { font-size: 16px; } /* prevents iOS zoom on focus */
  #input-field { font-size: 16px; } /* same */

  /* Show the mobile bottom nav */
  #mobile-nav { display: flex; }

  /* Snippets sidebar: make items bigger for touch */
  .snippet-item { padding: 10px 8px; font-size: 13px; }
  .settings-item { padding: 12px 4px; }
  .toggle { width: 40px; height: 22px; }
  .toggle .slider:before { width: 16px; height: 16px; }
  input:checked + .slider:before { transform: translateX(18px); }
}

/* ======================================================
   MOBILE BOTTOM NAV BAR
   ====================================================== */
#mobile-nav {
  display: none; /* hidden on desktop; shown via media query above */
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  height: 50px;
  background: var(--bg-sidebar);
  border-top: 1px solid var(--border);
  z-index: 200;
  align-items: stretch;
}

.mobile-nav-btn {
  flex: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 3px;
  background: transparent;
  border: none;
  color: var(--text-muted);
  cursor: pointer;
  font-family: var(--font-ui);
  font-size: 9px;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.6px;
  transition: color var(--transition), background var(--transition);
  -webkit-tap-highlight-color: transparent;
  padding: 4px 0;
}
.mobile-nav-btn svg { width: 20px; height: 20px; }
.mobile-nav-btn.active {
  color: var(--accent);
  background: var(--accent-glow);
}
.mobile-nav-btn:active { opacity: 0.75; }