/* ═══════════════════════════════════════
   DESIGN TOKENS - ARDUINO IDE 2.x
   ═══════════════════════════════════════ */
:root {
  /* LIGHT MODE DEFINITIONS (PREMIUM MINIMAL SLATE) */
  --bg-main: #f8fafc; /* Sleek Slate 50 background */
  --bg-sidebar: #ffffff; /* Pure white sidebar/panel */
  --bg-panel: #ffffff;
  --bg-toolbar: #ffffff;
  --border: #e2e8f0; /* Soft Slate 200 border */
  
  --accent: #0284c7; /* Modern Sky Blue/Teal */
  --accent-hover: #0369a1;
  
  --text-primary: #334155; /* Slate 700 text */
  --text-muted: #64748b; /* Slate 500 muted text */
  --text-bright: #0f172a; /* Slate 900 bold text */
  
  --tab-active-bg: #ffffff;
  --tab-inactive-bg: #f1f5f9;
  
  --console-bg: #f8fafc;
  --console-text: #0f172a;
  --console-success: #10b981;
  --console-error: #ef4444;
  --console-warning: #f59e0b;
  --console-time: #64748b;
  
  --btn-primary-bg: #0284c7;
  --btn-primary-text: #ffffff;
  --btn-primary-hover: #0369a1;
  --btn-disabled: #f1f5f9;
  
  --input-bg: #ffffff;
  --input-border: #cbd5e1;
  --input-text: #334155;
  --dropdown-bg: #ffffff;
  
  --scrollbar: #cbd5e1;
  --flyout-scrollbar-thumb: rgba(0, 0, 0, 0.15);
  --bg-statusbar: #ffffff;
  
  --bg-capsule: #ffffff;
  --border-capsule: var(--border);
  --text-capsule: var(--text-primary);
  --text-capsule-muted: var(--text-muted);
  --connect-btn-bg: #0284c7;
  --connect-btn-text: #ffffff;
  --connect-btn-hover: #0369a1;
  --connect-btn-connected-border: var(--border);
  --connect-btn-connected-text: var(--text-muted);

  --bg-hover: #f1f5f9;
  --bg-hover-sidebar: #f8fafc;
  --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.04);
  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.05), 0 2px 4px -2px rgba(0, 0, 0, 0.05);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.04), 0 4px 6px -4px rgba(0, 0, 0, 0.04);
  --radius-sm: 4px;
  --radius-md: 8px;
  --radius-lg: 12px;

  --font-ui: "Segoe UI", system-ui, -apple-system, sans-serif;
  --font-mono: "Consolas", "Courier New", monospace;
}

body.theme-dark {
  /* DARK MODE DEFINITIONS (PREMIUM DEEP DARK SLATE) */
  --bg-main: #0b0f19; /* Sleek Deep Slate background */
  --bg-sidebar: #0f172a; /* Slate 900 sidebar */
  --bg-panel: #0f172a;
  --bg-toolbar: #0f172a;
  --border: #1e293b; /* Subtle Slate 800 border */
  
  --accent: #14b8a6; /* Premium clean teal (Teal-500) */
  --accent-hover: #0d9488;
  
  --text-primary: #cbd5e1; /* Slate 300 primary text */
  --text-muted: #64748b; /* Slate 500 muted text */
  --text-bright: #f8fafc; /* Slate 50 bright text */
  
  --tab-active-bg: #0b0f19;
  --tab-inactive-bg: #0f172a;
  
  --console-bg: #05070c;
  --console-text: #f1f5f9;
  --console-success: #10b981;
  --console-error: #ef4444;
  --console-warning: #f59e0b;
  --console-time: #64748b;
  
  --btn-primary-bg: #14b8a6;
  --btn-primary-text: #05070c;
  --btn-primary-hover: #0d9488;
  --btn-disabled: #1e293b;
  
  --input-bg: #090d16;
  --input-border: #1e293b;
  --input-text: #cbd5e1;
  --dropdown-bg: #0f172a;
  
  --scrollbar: #1e293b;
  --flyout-scrollbar-thumb: rgba(255, 255, 255, 0.1);
  --bg-statusbar: #0f172a;
  
  --bg-capsule: #1e293b;
  --border-capsule: #334155;
  --text-capsule: #cbd5e1;
  --text-capsule-muted: #64748b;
  --connect-btn-bg: #14b8a6;
  --connect-btn-text: #05070c;
  --connect-btn-hover: #0d9488;
  --connect-btn-connected-border: #1e293b;
  --connect-btn-connected-text: #64748b;

  --bg-hover: #1e293b;
  --bg-hover-sidebar: #1e293b;
  --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.2);
  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.3), 0 2px 4px -2px rgba(0, 0, 0, 0.3);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.3), 0 4px 6px -4px rgba(0, 0, 0, 0.3);
  --radius-sm: 4px;
  --radius-md: 8px;
  --radius-lg: 12px;
}

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

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

/* ═══════════════════════════════════════
   SPLASH / INTRO SCREEN
   ═══════════════════════════════════════ */
#splash-screen {
  position: fixed;
  inset: 0;
  z-index: 99999;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  background: var(--bg-main);
  transition: opacity 0.5s ease, visibility 0.5s ease;
}

#splash-screen.splash-hidden {
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
}

.splash-content {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 20px;
}

.splash-logo {
  width: 80px;
  height: 80px;
  border-radius: 18px;
  animation: splash-logo-in 0.8s cubic-bezier(0.16, 1, 0.3, 1) both;
}

/* Theme-aware splash logo: show light logo by default, dark logo in dark mode */
.splash-logo.logo-dark { display: none; }
.splash-logo.logo-light { display: block; }
body.theme-dark .splash-logo.logo-dark { display: block; }
body.theme-dark .splash-logo.logo-light { display: none; }

.splash-name {
  font-family: var(--font-ui);
  font-size: 28px;
  font-weight: 700;
  letter-spacing: 2px;
  color: var(--text-bright);
  opacity: 0;
  transform: translateY(8px);
  animation: splash-text-in 0.6s cubic-bezier(0.16, 1, 0.3, 1) 0.3s both;
}

.splash-tagline {
  font-family: var(--font-ui);
  font-size: 12px;
  font-weight: 500;
  letter-spacing: 4px;
  text-transform: uppercase;
  color: var(--text-muted);
  opacity: 0;
  transform: translateY(6px);
  animation: splash-text-in 0.6s cubic-bezier(0.16, 1, 0.3, 1) 0.5s both;
}

.splash-loader {
  width: 120px;
  height: 2px;
  background: var(--border);
  border-radius: 2px;
  overflow: hidden;
  margin-top: 8px;
  opacity: 0;
  animation: splash-text-in 0.4s ease 0.7s both;
}

.splash-loader-bar {
  width: 0%;
  height: 100%;
  background: var(--accent);
  border-radius: 2px;
  animation: splash-loader-fill 1.8s cubic-bezier(0.4, 0, 0.2, 1) 0.8s both;
}

@keyframes splash-logo-in {
  0% {
    opacity: 0;
    transform: scale(0.6);
  }
  100% {
    opacity: 1;
    transform: scale(1);
  }
}

@keyframes splash-text-in {
  0% {
    opacity: 0;
    transform: translateY(8px);
  }
  100% {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes splash-loader-fill {
  0% { width: 0%; }
  40% { width: 60%; }
  80% { width: 90%; }
  100% { width: 100%; }
}

/* ─── GRID LAYOUT ─── */
.app-layout {
  --right-panel-width: 280px;
  --console-height: 200px;
  display: grid;
  grid-template-columns: 1fr var(--right-panel-width);
  grid-template-rows: 48px 1fr var(--console-height) 24px;
  grid-template-areas:
    "toolbar toolbar"
    "editor right"
    "console right"
    "statusbar statusbar";
  height: 100%;
  width: 100%;
}

.app-layout.hide-right {
  grid-template-columns: 1fr;
  grid-template-areas:
    "toolbar"
    "editor"
    "console"
    "statusbar";
}
.app-layout.hide-right .right-panel {
  display: none;
}


/* ─── TITLE BAR (DEPRECATED/MERGED) ─── */
.title-bar {
  display: none;
}

.title-left {
  display: flex;
  align-items: center;
  gap: 8px;
  cursor: pointer;
  user-select: none;
  transition: opacity 0.2s ease;
}

.title-left:hover {
  opacity: 0.85;
}

.title-logo {
  display: flex;
  align-items: center;
}

.title-logo svg,
.title-logo img {
  width: 28px;
  height: 28px;
  color: var(--accent);
}

.title-logo .logo-dark {
  display: none;
}
.title-logo .logo-light {
  display: block;
}
body.theme-dark .title-logo .logo-light {
  display: none;
}
body.theme-dark .title-logo .logo-dark {
  display: block;
}

.title-text {
  font-size: 14px;
  font-weight: 500;
  color: var(--text-bright);
}
.title-text .arduino {
  color: inherit;
  font-weight: 600;
}
.title-text .flash {
  color: inherit;
  font-weight: 400;
}

.title-version {
  color: var(--text-muted);
  font-size: 12px;
  margin-left: 4px;
}

/* Back-arrow button in the editor toolbar (left of logo) */
.editor-back-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 30px;
  height: 30px;
  padding: 0;
  margin-right: 4px;
  background: transparent;
  color: var(--text-primary);
  border: 1px solid transparent;
  border-radius: 6px;
  cursor: pointer;
  transition: background 0.15s ease, border-color 0.15s ease, color 0.15s ease;
}
.editor-back-btn:hover {
  background: var(--bg-hover);
  border-color: var(--border);
  color: var(--accent);
}
.editor-back-btn:active {
  background: var(--bg-active, var(--bg-hover));
}
.editor-back-btn svg {
  display: block;
}

.title-badge {
  color: var(--accent);
  border: 1px solid var(--accent);
  padding: 2px 8px;
  border-radius: 3px;
  font-size: 11px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  background: transparent;
}

/* ─── TOOLBAR ─── */
.toolbar {
  grid-area: toolbar;
  background: var(--bg-toolbar);
  border-bottom: 1px solid var(--border);
  display: flex;
  align-items: center;
  padding: 0 16px;
  gap: 12px;
  height: 48px;
  box-sizing: border-box;
}

.toolbar-divider {
  width: 1px;
  height: 24px;
  background: var(--border);
  margin: 0 8px;
}

.btn {
  display: flex;
  align-items: center;
  gap: 6px;
  border-radius: 3px;
  font-family: var(--font-ui);
  font-size: 13px;
  cursor: pointer;
  transition: background-color 0.15s ease, border-color 0.15s ease, color 0.15s ease;
  outline: none;
}

.btn-icon {
  display: flex;
  align-items: center;
}
.btn-icon svg {
  width: 14px;
  height: 14px;
  fill: currentColor;
}

.btn-primary {
  background: var(--btn-primary-bg);
  color: var(--btn-primary-text);
  border: none;
  padding: 6px 16px;
  font-weight: 500;
}
.btn-primary:hover:not(:disabled) {
  background: var(--btn-primary-hover);
}
.btn-primary:disabled {
  background: var(--btn-disabled);
  color: var(--text-muted);
  cursor: not-allowed;
}

.btn-ghost {
  background: transparent;
  color: var(--text-primary);
  border: 1px solid var(--border);
  padding: 5px 13px;
}
.btn-ghost:hover {
  border-color: var(--accent);
  color: var(--accent);
}
.btn-ghost.connected {
  border-color: var(--accent);
  color: var(--accent);
}

.toolbar-center {
  display: flex;
  align-items: center;
  gap: 12px;
  flex: none; /* Do not grow and take over the entire space */
}

.toolbar-label {
  font-size: 12px;
  color: var(--text-muted);
}

.board-select {
  background: var(--input-bg);
  border: 1px solid var(--input-border);
  color: var(--input-text);
  padding: 4px 8px;
  border-radius: 3px;
  font-family: var(--font-ui);
  font-size: 13px;
  min-width: 200px;
  outline: none;
  appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 16 16'%3E%3Cpath fill='%23d4d4d4' d='M4.2 5.8l3.8 3.8 3.8-3.8.7.7-4.5 4.5-4.5-4.5z'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 4px center;
  background-size: 16px;
}

.status-indicator {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: 12px;
}
.status-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--text-muted);
}
.status-dot.connected {
  background: var(--accent);
  animation: pulse 2s infinite;
}
.status-text {
  color: var(--text-muted);
}
.status-text.connected {
  color: var(--console-success);
}

@keyframes pulse {
  0%   { box-shadow: 0 0 0 0 rgba(0, 135, 138, 0.6); }
  70%  { box-shadow: 0 0 0 6px rgba(0, 135, 138, 0); }
  100% { box-shadow: 0 0 0 0 rgba(0, 135, 138, 0); }
}

.spinner {
  display: inline-block;
  width: 14px;
  height: 14px;
  border: 2px solid transparent;
  border-top-color: currentColor;
  border-radius: 50%;
  animation: spin 0.6s linear infinite;
}
@keyframes spin { 100% { transform: rotate(360deg); } }

/* Scrollbars */
::-webkit-scrollbar {
  width: 6px;
  height: 6px;
}
::-webkit-scrollbar-track {
  background: transparent;
}
::-webkit-scrollbar-thumb {
  background: var(--scrollbar);
  border-radius: 3px;
}
::-webkit-scrollbar-thumb:hover {
  background: #555555;
}

/* Unsupported banner */
#unsupported-banner {
  position: absolute;
  top: 80px;
  left: 0;
  right: 0;
  z-index: 100;
  background: #4d1c1c;
  color: #fff;
  padding: 8px 16px;
  text-align: center;
  border-bottom: 1px solid var(--console-error);
  font-size: 13px;
  display: none;
}
#unsupported-banner a {
  color: var(--accent);
}

/* ─── MODAL ─── */
.modal {
  display: none;
  position: fixed;
  top: 0; left: 0; right: 0; bottom: 0;
  background: rgba(0, 0, 0, 0.6);
  z-index: 10000;
  align-items: center;
  justify-content: center;
}
.modal.active {
  display: flex;
}
.modal-content {
  background: var(--bg-sidebar);
  border: 1px solid var(--border);
  border-radius: 6px;
  width: 500px;
  max-width: 90%;
  max-height: 90vh;
  max-height: calc(100dvh - 32px);
  box-shadow: 0 8px 32px rgba(0,0,0,0.4);
  display: flex;
  flex-direction: column;
}
.modal-header {
  padding: 16px 20px;
  border-bottom: 1px solid var(--border);
  display: flex;
  justify-content: space-between;
  align-items: center;
}
.modal-header h2 {
  font-size: 16px;
  font-weight: 500;
  margin: 0;
  color: var(--text-primary);
}
.close-btn {
  background: transparent;
  border: none;
  color: var(--text-muted);
  font-size: 24px;
  cursor: pointer;
  line-height: 1;
}
.close-btn:hover {
  color: var(--text-bright);
}
.modal-body {
  padding: 20px;
}
.modal-desc {
  font-size: 13px;
  color: var(--text-muted);
  margin-top: 0;
  margin-bottom: 16px;
}
/* ─── BLOCK CATEGORIES MODAL (PREMIUM DESIGN) ─── */
#more-blocks-modal .modal-content {
  background: #18042b; /* Dark purple background */
  border: 1.5px solid #3d2b6b;
  border-radius: 16px;
  width: 540px;
  max-width: 95%;
  box-shadow: 0 12px 40px rgba(0, 0, 0, 0.6);
  color: #ffffff;
}

#more-blocks-modal .modal-header {
  padding: 20px 24px;
  border-bottom: 1px solid rgba(255, 255, 255, 0.08);
}

#more-blocks-modal .modal-header h2 {
  font-size: 20px;
  font-weight: 600;
  color: #ffffff;
}

#more-blocks-modal .close-btn {
  color: rgba(255, 255, 255, 0.5);
  font-size: 26px;
  transition: color 0.2s ease;
}

#more-blocks-modal .close-btn:hover {
  color: #ffffff;
}

#more-blocks-modal .modal-body {
  padding: 20px 24px;
}

#more-blocks-modal .modal-desc {
  font-size: 14px;
  color: rgba(255, 255, 255, 0.6);
  margin-bottom: 20px;
}

.category-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 12px;
  max-height: 340px;
  overflow-y: auto;
  padding-right: 4px;
}

@media (max-width: 480px) {
  .category-grid {
    grid-template-columns: 1fr;
  }
}

/* Custom Scrollbar for the grid */
.category-grid::-webkit-scrollbar {
  width: 6px;
}
.category-grid::-webkit-scrollbar-track {
  background: rgba(0, 0, 0, 0.2);
  border-radius: 3px;
}
.category-grid::-webkit-scrollbar-thumb {
  background: rgba(255, 255, 255, 0.15);
  border-radius: 3px;
}
.category-grid::-webkit-scrollbar-thumb:hover {
  background: rgba(255, 255, 255, 0.3);
}

.category-checkbox-item {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 10px 14px;
  background: rgba(255, 255, 255, 0.03);
  border: 1.5px solid rgba(255, 255, 255, 0.05);
  border-radius: 12px;
  cursor: pointer;
  transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
  user-select: none;
}

.category-checkbox-item:hover {
  background: rgba(255, 255, 255, 0.07);
  border-color: rgba(255, 255, 255, 0.15);
  transform: translateY(-1px);
}

/* Selected state styling */
.category-checkbox-item.checked-active {
  background: rgba(255, 255, 255, 0.05);
  border-color: rgba(255, 255, 255, 0.12);
}

.category-item-left {
  display: flex;
  align-items: center;
  gap: 12px;
}

.category-icon-badge {
  width: 32px;
  height: 32px;
  border-radius: 8px;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: transform 0.2s ease;
}

.category-checkbox-item:hover .category-icon-badge {
  transform: scale(1.05);
}

.category-icon-badge svg {
  width: 22px;
  height: 22px;
  stroke: #ffffff;
}

.category-item-name {
  font-size: 14px;
  font-weight: 500;
  color: #e0e0e0;
  font-family: var(--font-ui);
}

.custom-checkbox-box {
  width: 22px;
  height: 22px;
  border: 2px solid rgba(255, 255, 255, 0.2);
  border-radius: 6px;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
  background: transparent;
}

/* Custom checkbox when checked */
.category-checkbox-item input:checked ~ .custom-checkbox-box {
  background: #a855f7;
  border-color: #a855f7;
  box-shadow: 0 0 10px rgba(168, 85, 247, 0.4);
}

.checkmark-svg {
  width: 12px;
  height: 12px;
  stroke: #ffffff;
  stroke-width: 3.5px;
  stroke-linecap: round;
  stroke-linejoin: round;
  fill: none;
  opacity: 0;
  transform: scale(0.6);
  transition: all 0.2s cubic-bezier(0.175, 0.885, 0.32, 1.275);
}

.category-checkbox-item input:checked ~ .custom-checkbox-box .checkmark-svg {
  opacity: 1;
  transform: scale(1.0);
}

#more-blocks-modal .modal-footer {
  padding: 16px 24px 20px 24px;
  border-top: 1px solid rgba(255, 255, 255, 0.08);
  display: flex;
  align-items: center;
  justify-content: flex-end;
}

.btn-reset-categories {
  background: transparent;
  border: 1.5px solid rgba(255, 255, 255, 0.15);
  color: #e0e0e0;
  border-radius: 8px;
  padding: 8px 16px;
  font-weight: 500;
  font-size: 13px;
  display: flex;
  align-items: center;
  gap: 6px;
  cursor: pointer;
  transition: all 0.2s ease;
}

.btn-reset-categories:hover {
  border-color: rgba(255, 255, 255, 0.3);
  background: rgba(255, 255, 255, 0.05);
}

.btn-cancel-categories {
  background: rgba(255, 255, 255, 0.03);
  border: 1.5px solid transparent;
  color: rgba(255, 255, 255, 0.7);
  border-radius: 8px;
  padding: 8px 16px;
  font-weight: 500;
  font-size: 13px;
  cursor: pointer;
  transition: all 0.2s ease;
}

.btn-cancel-categories:hover {
  background: rgba(255, 255, 255, 0.07);
  color: #ffffff;
}

.btn-save-categories {
  background: #a855f7;
  border: none;
  color: #ffffff;
  border-radius: 8px;
  padding: 8px 20px;
  font-weight: 500;
  font-size: 13px;
  cursor: pointer;
  transition: all 0.2s ease;
  box-shadow: 0 4px 12px rgba(168, 85, 247, 0.3);
}

.btn-save-categories:hover {
  background: #b56eff;
  box-shadow: 0 4px 16px rgba(168, 85, 247, 0.4);
}

/* ─── VARIABLE PROMPT MODAL ─── */
.variable-modal {
  background: #1e0a3d; /* Dark purple */
  border: 1px solid #3d2b6b;
  width: 420px;
  border-radius: 12px;
  padding: 8px;
}
.variable-prompt-title {
  color: white;
  font-size: 18px;
  margin-bottom: 16px;
  font-weight: 500;
}
.variable-input {
  width: 100%;
  background: #2b1454;
  border: 1px solid #4d3385;
  color: white;
  padding: 12px;
  border-radius: 6px;
  font-size: 16px;
  outline: none;
}
.variable-input:focus {
  border-color: #a855f7;
}
.variable-select {
  width: 100%;
  background: #2b1454;
  border: 1px solid #4d3385;
  color: white;
  padding: 12px;
  border-radius: 6px;
  font-size: 16px;
  outline: none;
  margin-top: 12px;
  font-family: inherit;
  cursor: pointer;
}
.variable-select:focus {
  border-color: #a855f7;
}
.variable-footer {
  border-top: none;
  padding: 12px 20px 20px;
  gap: 12px;
  display: flex;
  justify-content: flex-end;
  align-items: center;
}
.btn-cancel {
  background: #2b1454;
  color: white;
  border: 1px solid #4d3385;
  padding: 8px 24px;
}
.btn-confirm {
  background: #9333ea; /* Bright purple */
  color: white;
  border: none;
  padding: 8px 24px;
  font-weight: 600;
}
.btn-confirm:hover {
  background: #a855f7;
}

/* ─── BLOCKLY CUSTOMIZATIONS ─── */
.blocklyDisabled > .blocklyPath {
  fill-opacity: 0.5 !important;
  stroke-opacity: 0.5 !important;
  filter: grayscale(100%) brightness(0.8) !important;
}

.blocklyDisabled > .blocklyText {
  fill-opacity: 0.5 !important;
}

/* Custom premium flyout buttons style */
.blocklyFlyoutButtonBackground {
  fill: #2b1454 !important;
  stroke: #4d3385 !important;
  stroke-width: 1px !important;
  rx: 6px !important;
  ry: 6px !important;
}
.blocklyFlyoutButton:hover .blocklyFlyoutButtonBackground {
  fill: #4d3385 !important;
  stroke: #a855f7 !important;
}
.blocklyFlyoutButton .blocklyText {
  fill: #ffffff !important;
}

/* ─── FUNCTION EDIT MODAL STYLES ─── */
.function-modal {
  background: #12052b; /* Curated deep-purple dark mode */
  border: 1px solid #36225e;
  border-radius: 16px;
  width: 480px;
  box-shadow: 0 16px 48px rgba(0, 0, 0, 0.6);
  padding: 8px;
}
.function-header {
  border-bottom: 1px solid #231145;
  padding: 16px 20px;
}
.function-header h2 {
  font-size: 20px;
  font-weight: 600;
  color: #ffffff;
  font-family: 'Outfit', 'Inter', sans-serif;
}
.modal-section {
  display: flex;
  flex-direction: column;
}
.section-title {
  color: #ffffff;
  font-size: 14px;
  font-weight: 600;
  margin-bottom: 8px;
  text-transform: capitalize;
  font-family: 'Outfit', sans-serif;
}
.function-row {
  display: flex;
  gap: 12px;
  align-items: center;
}
.custom-select-wrapper {
  position: relative;
  display: inline-block;
}
.function-select {
  background: #211145;
  border: 1px solid #4a2c8a;
  color: #ffffff;
  padding: 10px 32px 10px 16px;
  border-radius: 8px;
  font-size: 14px;
  outline: none;
  cursor: pointer;
  appearance: none;
  font-weight: 500;
  min-width: 100px;
  font-family: 'Inter', sans-serif;
}
.custom-select-wrapper::after {
  content: "▼";
  font-size: 10px;
  color: #a855f7;
  position: absolute;
  right: 12px;
  top: 50%;
  transform: translateY(-50%);
  pointer-events: none;
}
.function-input {
  flex: 1;
  background: #170b33;
  border: 1px solid #3c2373;
  color: #ffffff;
  padding: 10px 16px;
  border-radius: 8px;
  font-size: 14px;
  outline: none;
  font-family: 'Inter', sans-serif;
  transition: border-color 0.2s;
}
.function-input:focus {
  border-color: #a855f7;
  background: #211145;
}
.btn-add-input {
  align-self: flex-start;
  background: transparent;
  color: #c084fc;
  border: 1px solid #4a2c8a;
  border-radius: 8px;
  padding: 8px 16px;
  font-size: 13px;
  font-weight: 600;
  cursor: pointer;
  margin-top: 12px;
  display: flex;
  align-items: center;
  gap: 6px;
  transition: all 0.2s;
  font-family: 'Inter', sans-serif;
}
.btn-add-input:hover {
  background: rgba(168, 85, 247, 0.1);
  color: #d8b4fe;
  border-color: #a855f7;
}
.plus-icon {
  font-size: 16px;
  line-height: 1;
}

/* Parameter Row Container */
#function-inputs-container {
  display: flex;
  flex-direction: column;
  gap: 10px;
  max-height: 200px;
  overflow-y: auto;
  padding-right: 4px;
}
.no-inputs-text {
  color: #7c68a6;
  font-size: 13px;
  margin: 4px 0 12px;
  font-style: italic;
}
.parameter-row {
  display: flex;
  gap: 10px;
  align-items: center;
  animation: fadeIn 0.2s ease-out;
}
.btn-delete-param {
  background: transparent;
  border: none;
  color: #9e8fb2;
  font-size: 20px;
  cursor: pointer;
  padding: 0 4px;
  line-height: 1;
  transition: color 0.2s;
}
.btn-delete-param:hover {
  color: #f43f5e;
}
.parameter-index {
  color: #a855f7;
  font-weight: 600;
  font-size: 14px;
  min-width: 24px;
  font-family: 'Outfit', sans-serif;
}
.function-footer {
  border-top: 1px solid #231145;
  padding: 16px 20px;
  gap: 12px;
  display: flex;
  justify-content: flex-end;
  align-items: center;
}

@keyframes fadeIn {
  from { opacity: 0; transform: translateY(-4px); }
  to { opacity: 1; transform: translateY(0); }
}

/* ═══════════════════════════════════════
   MOBILE RESPONSIVE ADAPTATIONS
   ═══════════════════════════════════════ */
@media (max-width: 768px) {
  /* 1. App Layout stack columns single column */
  .app-layout {
    --console-height: 68px;
    grid-template-columns: 1fr !important;
    grid-template-rows: 48px 1fr var(--console-height) 24px !important;
    grid-template-areas:
      "toolbar"
      "editor"
      "console"
      "statusbar" !important;
  }

  /* 1b. Mobile Console Panel Adjustability & Touch Resizing */
  .console-panel {
    min-height: 68px !important;
  }

  .console-resizer {
    height: 16px !important;
    top: -8px !important;
    cursor: ns-resize !important;
  }

  /* Compact Mode: hides status bar & inputs to fit 1 line of output when height is small (<120px) */
  .console-panel.console-compact .serial-status-bar,
  .console-panel.console-compact .serial-input-row {
    display: none !important;
  }

  .console-panel.console-compact .log-container,
  .console-panel.console-compact .serial-log {
    padding: 4px 12px !important;
  }

  /* 2. Compact Title Bar (Merged) */
  .title-text, .title-badge, .title-version {
    display: none !important;
  }

  /* 3. Compact Toolbar */
  .toolbar-label {
    display: none !important;
  }
  #upload-label, #connect-label {
    display: none !important;
  }
  .btn {
    padding: 6px !important;
    gap: 0 !important;
  }
  .board-select {
    min-width: 100px !important;
    max-width: 130px !important;
    font-size: 11px !important;
    padding: 4px !important;
    background-position: right 2px center !important;
  }
  .toolbar {
    padding: 0 8px !important;
    gap: 4px !important;
  }
  .toolbar-divider {
    margin: 0 4px !important;
  }
  .toolbar-center {
    gap: 4px !important;
  }
  .status-text {
    display: none !important;
  }
  .status-indicator {
    margin: 0 2px !important;
  }

  /* 4. Overlay Sliding Drawer for Right Code Panel */
  .right-panel {
    position: fixed !important;
    right: 0 !important;
    top: 48px !important; /* toolbar (48) */
    bottom: 24px !important; /* statusbar (24) */
    width: var(--right-panel-width, 82vw) !important; /* Dynamically set by resizer dragging */
    max-width: 90vw !important; /* Prevent completely covering workspace */
    z-index: 1000 !important;
    background: var(--bg-sidebar) !important;
    box-shadow: -5px 0 25px rgba(0, 0, 0, 0.6) !important;
    border-left: 1px solid var(--border) !important;
    display: flex !important;
    transform: translateX(0) !important;
    transition: transform 0.3s cubic-bezier(0.4, 0, 0.2, 1) !important;
  }
  
  .app-layout.hide-right .right-panel {
    display: flex !important;
    transform: translateX(100%) !important;
    pointer-events: none !important;
    box-shadow: none !important;
  }
  
  /* Make resizer highly touch-friendly on mobile screens */
  .resizer {
    display: block !important;
    left: 0 !important;
    width: 24px !important; /* Wide touch/grab target */
    margin-left: -12px !important; /* Center the touch target on the border */
    cursor: ew-resize !important;
    background: transparent !important;
    z-index: 1002 !important; /* Ensure it floats on top of the tab for easy dragging */
  }
  .resizer:active, .resizer.dragging {
    background: rgba(0, 135, 138, 0.25) !important; /* Soft visual highlight when actively resizing */
  }

  /* 5. Keep generated code single-line with horizontal scroll on mobile */
  #code-preview {
    white-space: pre !important;
    word-wrap: normal !important;
    word-break: normal !important;
    overflow: auto !important;
    font-size: 11px !important;
    padding: 8px 12px !important;
  }

  /* 6. Push orange toggle tab to float dynamically on the left edge of the open drawer */
  .floating-code-tab {
    z-index: 1001 !important; /* Force higher z-index to show above Blockly canvas on mobile */
  }
  .app-layout:not(.hide-right) .floating-code-tab {
    right: var(--right-panel-width, 82vw) !important; /* Tracks dynamic width of code panel */
  }
  .app-layout.hide-right .floating-code-tab {
    right: 0 !important; /* Snap to the far right edge of the screen when panel is hidden */
  }

  /* 7. Compact Status Bar progress track */
  .progress-wrapper {
    width: 120px !important;
  }

  /* 8. Mobile popup sizing */
  .error-popup,
  .status-popup {
    left: 12px !important;
    right: 12px !important;
    width: auto !important;
    bottom: 12px !important;
    max-width: none !important;
    box-sizing: border-box !important;
  }

  .variable-footer,
  .function-footer {
    justify-content: space-between !important;
  }
  .variable-footer .btn,
  .function-footer .btn {
    flex: 1 !important;
    justify-content: center !important;
  }
}

@media (max-width: 480px) {
  /* 6. Stacking Serial Monitor Input row */
  .serial-input-row {
    flex-wrap: wrap !important;
    gap: 4px !important;
    padding: 6px !important;
  }
  .serial-baud, .serial-line-ending {
    min-width: 0 !important;
    flex: 1 1 40% !important;
  }
  .serial-input {
    width: 100% !important;
    flex: none !important;
    order: -1 !important; /* Stack text input at the top row */
  }
  .serial-send-btn {
    flex: 1 1 100% !important;
  }
}

.btn-error {
  background-color: #f44747 !important;
  border-color: #f44747 !important;
  color: #ffffff !important;
  animation: pulse-error 1.5s infinite ease-in-out;
  box-shadow: 0 0 8px rgba(244, 71, 71, 0.6);
}

@keyframes pulse-error {
  0% {
    opacity: 1;
    box-shadow: 0 0 8px rgba(244, 71, 71, 0.6);
  }
  50% {
    opacity: 0.7;
    box-shadow: 0 0 16px rgba(244, 71, 71, 0.2);
  }
  100% {
    opacity: 1;
    box-shadow: 0 0 8px rgba(244, 71, 71, 0.6);
  }
}

/* ─── COMPILATION ERROR POPUP ─── */
.error-popup {
  position: fixed;
  bottom: 32px;
  right: 16px;
  width: 420px;
  background-color: #1a2024;
  border-radius: 4px;
  box-shadow: 0 4px 16px rgba(0, 0, 0, 0.5), 0 0 1px rgba(255, 255, 255, 0.1);
  padding: 16px;
  z-index: 9999;
  display: flex;
  flex-direction: column;
  gap: 12px;
  font-family: var(--font-ui);
  opacity: 0;
  transform: translateY(16px);
  transition: opacity 0.3s ease, transform 0.3s ease, bottom 0.3s ease;
}

.error-popup.visible {
  opacity: 1;
  transform: translateY(0);
}

.error-popup.closing {
  opacity: 0;
  transform: translateY(8px);
}

.error-popup-content {
  display: flex;
  align-items: center;
  gap: 10px;
}

.error-popup-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.error-popup-text {
  color: #d4d4d4;
  font-size: 13px;
  font-weight: 500;
}

.error-popup-close {
  position: absolute;
  top: 10px;
  right: 10px;
  background: transparent;
  border: none;
  color: #858585;
  cursor: pointer;
  padding: 4px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 3px;
  transition: color 0.15s, background 0.15s;
}

.error-popup-close:hover {
  color: #d4d4d4;
  background: rgba(255, 255, 255, 0.05);
}

.error-popup-action-row {
  display: flex;
  justify-content: flex-end;
}

.error-popup-copy-btn {
  background-color: var(--accent);
  border: none;
  color: var(--btn-primary-text);
  padding: 6px 16px;
  border-radius: 100px;
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.05em;
  cursor: pointer;
  transition: background-color 0.15s, transform 0.1s;
}

.error-popup-copy-btn:hover {
  background-color: var(--accent-hover);
}

.error-popup-copy-btn:active {
  transform: scale(0.97);
}

/* ─── STATUS & NOTIFICATION POPUPS ─── */
.status-popup {
  position: fixed;
  bottom: 32px;
  right: 16px;
  width: 420px;
  min-height: 48px;
  background-color: #1a2024;
  border-radius: 4px;
  box-shadow: 0 4px 16px rgba(0, 0, 0, 0.5), 0 0 1px rgba(255, 255, 255, 0.1);
  padding: 12px 16px;
  z-index: 9999;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  font-family: var(--font-ui);
  opacity: 0;
  transform: translateY(16px);
  transition: opacity 0.3s ease, transform 0.3s ease, bottom 0.3s ease;
  overflow: hidden;
}

.status-popup.visible {
  opacity: 1;
  transform: translateY(0);
}

.status-popup.closing {
  opacity: 0;
  transform: translateY(8px);
}

.status-popup-content {
  display: flex;
  align-items: center;
  gap: 10px;
  color: #d4d4d4;
  font-size: 13px;
  font-weight: 500;
}

.status-popup-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.status-popup-close {
  background: transparent;
  border: none;
  color: #858585;
  cursor: pointer;
  padding: 4px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 3px;
  transition: color 0.15s, background 0.15s;
}

.status-popup-close:hover {
  color: #d4d4d4;
  background: rgba(255, 255, 255, 0.05);
}

/* Uploading cancel button */
.status-popup-cancel-btn {
  background-color: var(--accent);
  border: none;
  color: var(--btn-primary-text);
  padding: 6px 14px;
  border-radius: 100px;
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.05em;
  cursor: pointer;
  transition: background-color 0.15s, transform 0.1s;
}

.status-popup-cancel-btn:hover {
  background-color: var(--accent-hover);
}

.status-popup-cancel-btn:active {
  transform: scale(0.97);
}

/* Premium bottom progress line for Uploading */
.status-popup-progress {
  position: absolute;
  bottom: 0;
  left: 0;
  height: 3px;
  background-color: var(--accent);
  width: 0%;
  transition: width 0.1s ease;
}

/* ═══════════════════════════════════════
   DYNAMIC FONT SIZE CONTROLS
   ═══════════════════════════════════════ */
:root {
  --ide-font-size: 13px;
}

#code-tab .CodeMirror {
  font-size: var(--ide-font-size) !important;
}

#code-preview {
  font-size: var(--ide-font-size) !important;
}

.log-container {
  font-size: var(--ide-font-size) !important;
}

.serial-log {
  font-size: var(--ide-font-size) !important;
}

/* Premium range input thumb styling */
#fontsize-all, #fontsize-all-page {
  -webkit-appearance: none;
  appearance: none;
  width: 100%;
  background: transparent;
}
#fontsize-all::-webkit-slider-thumb, #fontsize-all-page::-webkit-slider-thumb {
  -webkit-appearance: none;
  appearance: none;
  width: 14px;
  height: 14px;
  border-radius: 50%;
  background: var(--accent);
  cursor: pointer;
  transition: transform 0.1s ease;
}
#fontsize-all::-webkit-slider-thumb:hover, #fontsize-all-page::-webkit-slider-thumb:hover {
  transform: scale(1.25);
}
#fontsize-all::-moz-range-thumb, #fontsize-all-page::-moz-range-thumb {
  width: 14px;
  height: 14px;
  border-radius: 50%;
  background: var(--accent);
  cursor: pointer;
  border: none;
  transition: transform 0.1s ease;
}
#fontsize-all::-moz-range-thumb:hover, #fontsize-all-page::-moz-range-thumb:hover {
  transform: scale(1.25);
}
/* Premium Custom Switch Toggle */
.switch-toggle {
  position: relative;
  display: inline-block;
  width: 42px;
  height: 22px;
  flex-shrink: 0;
}
.switch-toggle input {
  opacity: 0;
  width: 0;
  height: 0;
}
.switch-slider {
  position: absolute;
  cursor: pointer;
  top: 0; left: 0; right: 0; bottom: 0;
  background-color: var(--border);
  transition: .2s cubic-bezier(0.4, 0, 0.2, 1);
  border-radius: 34px;
}
.switch-slider:before {
  position: absolute;
  content: "";
  height: 16px;
  width: 16px;
  left: 3px;
  bottom: 3px;
  background-color: var(--text-bright);
  transition: .2s cubic-bezier(0.4, 0, 0.2, 1);
  border-radius: 50%;
  box-shadow: 0 1px 3px rgba(0,0,0,0.4);
}
input:checked + .switch-slider {
  background-color: var(--accent);
}
input:checked + .switch-slider:before {
  transform: translateX(20px);
}

/* Blockly background grid hiding rule */
#blockly-container.no-grid {
  background-image: none !important;
}

/* ─── ARDUINO IDE V2.X STYLED TOOLBAR ─── */

/* Styling verify/upload buttons with circular badges */
#verify-btn, #upload-btn {
  background: transparent !important;
  border: none !important;
  padding: 4px 8px !important;
  display: flex !important;
  align-items: center !important;
  gap: 8px !important;
  color: var(--text-muted) !important;
  font-family: var(--font-ui) !important;
  font-size: 13px !important;
  font-weight: 500 !important;
  opacity: 1 !important;
  cursor: pointer !important;
  transition: color 0.15s ease !important;
}

#verify-btn:disabled, #upload-btn:disabled {
  opacity: 0.5 !important;
  cursor: not-allowed !important;
}

#verify-btn:hover:not(:disabled), #upload-btn:hover:not(:disabled) {
  color: var(--text-bright) !important;
}

#verify-icon, #upload-icon {
  width: 28px !important;
  height: 28px !important;
  border-radius: 50% !important;
  display: flex !important;
  align-items: center !important;
  justify-content: center !important;
  background-color: var(--accent) !important; /* Theme-aware circular background */
  color: var(--bg-main) !important; /* Theme-aware icon color (white in light mode, dark charcoal in dark mode) */
  transition: all 0.2s ease !important;
  flex-shrink: 0 !important;
}

#verify-btn:hover:not(:disabled) #verify-icon,
#upload-btn:hover:not(:disabled) #upload-icon {
  background-color: var(--accent-hover) !important; /* Theme-aware hover background */
  transform: scale(1.05);
}

#verify-btn:active:not(:disabled) #verify-icon,
#upload-btn:active:not(:disabled) #upload-icon {
  transform: scale(0.95);
}

/* Spinner inside circular icon matches */
#verify-icon .spinner, #upload-icon .spinner {
  width: 14px !important;
  height: 14px !important;
  border: 2px solid rgba(30, 30, 30, 0.2) !important;
  border-top-color: #1e1e1e !important;
}

/* Unified selector widget in the center */
.toolbar-center {
  display: flex !important;
  align-items: center !important;
  background-color: var(--bg-capsule) !important; /* Theme-aware capsule background */
  border: 1px solid var(--border-capsule) !important; /* Theme-aware border */
  border-radius: 4px !important;
  padding: 2px 4px 2px 10px !important;
  gap: 10px !important;
  height: 32px !important;
  box-sizing: border-box !important;
  transition: background-color 0.2s ease, border-color 0.2s ease !important;
}

.board-select {
  background: transparent !important;
  border: none !important;
  color: var(--text-capsule) !important; /* Theme-aware select text color */
  font-family: var(--font-ui) !important;
  font-size: 12px !important;
  font-weight: 500 !important;
  padding: 0 16px 0 0 !important;
  min-width: 160px !important;
  outline: none !important;
  appearance: none !important;
  cursor: pointer !important;
  background-repeat: no-repeat !important;
  background-position: right 0 center !important;
  background-size: 12px !important;
}

/* Dynamically change dropdown arrow color depending on theme */
body:not(.theme-dark) .board-select {
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 16 16'%3E%3Cpath fill='%236c757d' d='M4.2 5.8l3.8 3.8 3.8-3.8.7.7-4.5 4.5-4.5-4.5z'/%3E%3C/svg%3E") !important;
}
body.theme-dark .board-select {
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 16 16'%3E%3Cpath fill='%23858585' d='M4.2 5.8l3.8 3.8 3.8-3.8.7.7-4.5 4.5-4.5-4.5z'/%3E%3C/svg%3E") !important;
}

.status-indicator {
  display: flex !important;
  align-items: center !important;
  gap: 6px !important;
  font-size: 11px !important;
  color: var(--text-capsule-muted) !important; /* Theme-aware status text color */
  border-left: 1px solid var(--border-capsule) !important;
  padding-left: 10px !important;
  height: 16px !important;
}

.status-dot {
  width: 6px !important;
  height: 6px !important;
  border-radius: 50% !important;
  background-color: var(--text-capsule-muted) !important; /* Theme-aware status dot */
  transition: all 0.3s ease !important;
}

.status-dot.connected {
  background-color: #4ec9b0 !important; /* Green dot remains active green */
  box-shadow: 0 0 6px #4ec9b0 !important;
}

#connect-btn {
  background-color: var(--connect-btn-bg) !important; /* Theme-aware button background */
  border: none !important;
  color: var(--connect-btn-text) !important; /* Theme-aware text color */
  padding: 4px 10px !important;
  border-radius: 3px !important;
  font-size: 11px !important;
  font-weight: 600 !important;
  cursor: pointer !important;
  transition: all 0.15s ease !important;
  display: flex !important;
  align-items: center !important;
  gap: 4px !important;
  height: 24px !important;
}

#connect-btn:hover {
  background-color: var(--connect-btn-hover) !important;
  color: var(--connect-btn-text) !important;
}

#connect-btn.connected {
  background-color: transparent !important;
  border: 1px solid var(--connect-btn-connected-border) !important;
  color: var(--connect-btn-connected-text) !important;
}

#connect-btn.connected:hover {
  border-color: #f44747 !important;
  color: #f44747 !important;
}

/* Styling top toolbar exactly like Arduino IDE v2.x on mobile screens */
@media (max-width: 768px) {
  /* Hide text, badges, and dividers to optimize horizontal space */
  .title-text,
  .title-version,
  .title-badge,
  .toolbar-divider {
    display: none !important;
  }

  /* Compact the toolbar padding and alignment */
  .toolbar {
    padding: 0 6px !important;
    gap: 4px !important;
    display: flex !important;
    align-items: center !important;
    justify-content: space-between !important;
    height: 48px !important;
  }

  /* Logo container: align vertically in center */
  .title-left {
    margin-right: 0 !important;
    gap: 6px !important;
    display: flex !important;
    align-items: center !important;
    justify-content: center !important;
    height: 30px !important;
  }

  .title-logo {
    display: flex !important;
    align-items: center !important;
    justify-content: center !important;
    height: 30px !important;
  }

  .title-logo svg,
  .title-logo img {
    margin: 0 !important;
    width: 20px !important;
    height: 20px !important;
  }
  body.theme-dark .title-logo .logo-light {
    display: none !important;
  }
  body.theme-dark .title-logo .logo-dark {
    display: block !important;
  }
  body:not(.theme-dark) .title-logo .logo-light {
    display: block !important;
  }
  body:not(.theme-dark) .title-logo .logo-dark {
    display: none !important;
  }

  .title-right {
    margin-left: 0 !important;
    gap: 4px !important;
    display: flex !important;
    align-items: center !important;
    justify-content: center !important;
    height: 30px !important;
  }

  /* verify / upload buttons: show only circular icons */
  #verify-label, 
  #upload-label {
    display: none !important;
  }
  
  #verify-btn, 
  #upload-btn {
    padding: 0 !important;
    margin: 0 !important;
    gap: 0 !important;
    height: 30px !important;
    display: flex !important;
    align-items: center !important;
    justify-content: center !important;
  }

  #verify-icon, 
  #upload-icon {
    width: 30px !important;
    height: 30px !important;
    border-radius: 50% !important;
    display: flex !important;
    align-items: center !important;
    justify-content: center !important;
  }

  /* Project button: show only circular project folder icon button */
  #project-btn {
    width: 30px !important;
    height: 30px !important;
    border-radius: 50% !important;
    padding: 0 !important;
    margin: 0 !important;
    display: flex !important;
    align-items: center !important;
    justify-content: center !important;
    background-color: transparent !important;
    border: 1px solid var(--border) !important;
    color: var(--text-primary) !important;
    flex-shrink: 0 !important;
  }

  #project-btn span.btn-icon {
    margin-right: 0 !important;
    display: flex !important;
    align-items: center !important;
    justify-content: center !important;
  }

  /* Settings and More Options buttons: show only circular icons */
  #settings-btn {
    width: 30px !important;
    height: 30px !important;
    border-radius: 50% !important;
    padding: 0 !important;
    margin: 0 !important;
    display: flex !important;
    align-items: center !important;
    justify-content: center !important;
    background-color: transparent !important;
    border: 1px solid var(--border) !important;
    color: var(--text-primary) !important;
    flex-shrink: 0 !important;
  }

  #more-options-btn {
    width: 30px !important;
    height: 30px !important;
    border-radius: 50% !important;
    padding: 0 !important;
    margin: 0 !important;
    display: none !important;
    align-items: center !important;
    justify-content: center !important;
    background-color: transparent !important;
    border: 1px solid var(--border) !important;
    color: var(--text-primary) !important;
    flex-shrink: 0 !important;
  }

  #settings-btn span:not(.btn-icon), #more-options-btn span:not(.btn-icon) {
    display: none !important;
  }

  /* Selector widget container */
  .toolbar-center {
    gap: 4px !important;
    padding: 0 2px !important;
    height: 30px !important;
    display: flex !important;
    align-items: center !important;
    box-sizing: border-box !important;
  }

  /* Set compact board select width on mobile to show "Arduino Uno" */
  .board-select {
    min-width: 75px !important;
    max-width: 105px !important;
    width: auto !important;
    height: 30px !important;
    line-height: 30px !important;
    padding: 0 12px 0 4px !important;
    margin: 0 !important;
    text-indent: 0 !important;
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 16 16'%3E%3Cpath fill='%23858585' d='M4.2 5.8l3.8 3.8 3.8-3.8.7.7-4.5 4.5-4.5-4.5z'/%3E%3C/svg%3E") !important;
    background-position: right 2px center !important;
    background-size: 8px !important;
    display: flex !important;
    align-items: center !important;
    border-radius: 3px !important;
    transition: max-width 0.2s ease, min-width 0.2s ease !important;
  }
  .board-select:focus {
    min-width: 120px !important;
    max-width: 150px !important;
  }

  /* Hide connection status indicator to maximize screen space on mobile */
  .status-text {
    display: none !important;
  }

  .status-indicator {
    display: none !important;
  }

  .status-dot {
    display: none !important;
  }

  /* Connect button: show only rounded square serial icon button matching other controls */
  #connect-btn {
    width: 24px !important;
    height: 24px !important;
    border-radius: 4px !important;
    padding: 0 !important;
    margin: 0 2px 0 0 !important;
    display: flex !important;
    align-items: center !important;
    justify-content: center !important;
    flex-shrink: 0 !important;
  }

  #connect-label {
    display: none !important;
  }

  /* Responsive bottom status bar to prevent overlap/wrapping */
  .status-bar {
    padding: 0 8px !important;
  }
  .status-bar > div:last-child {
    min-width: 0 !important;
    flex-shrink: 1 !important;
  }
  #status-board-connection {
    max-width: 180px !important;
    overflow: hidden !important;
    text-overflow: ellipsis !important;
    white-space: nowrap !important;
    display: block !important;
  }
  @media (max-width: 500px) {
    #status-board-connection {
      max-width: 130px !important;
    }
  }
}

.settings-gear-icon {
  fill: none !important;
  stroke: currentColor;
  stroke-width: 1.8;
  stroke-linecap: round;
  stroke-linejoin: round;
}

.settings-gear-icon .gear-dash-ring {
  stroke: currentColor;
  stroke-width: 0.8;
  stroke-dasharray: 1.5 1.5;
  opacity: 0.6;
}

.settings-gear-icon .gear-hub {
  stroke: currentColor;
  stroke-width: 1.2;
  fill: none !important;
}





/* ─── PROJECT SAVE/OPEN DROPDOWN & NAVBAR TITLE ─── */
#project-btn {
  background: transparent !important;
  border: 1px solid #3c3c3c !important;
  color: #d4d4d4 !important;
  padding: 6px 10px !important;
  border-radius: 3px !important;
  cursor: pointer !important;
  display: flex !important;
  align-items: center !important;
  justify-content: center !important;
  transition: border-color 0.15s ease, color 0.15s ease !important;
}

#project-btn:hover {
  border-color: #00878a !important;
  color: #00878a !important;
}

body:not(.theme-dark) #project-btn {
  border: 1px solid #dfe1e5 !important;
  color: #495057 !important;
}

body:not(.theme-dark) #project-btn:hover {
  border-color: #343a40 !important;
  color: #343a40 !important;
}

.project-dropdown {
  position: absolute !important;
  top: 100% !important;
  left: 8px !important;
  background: #2d2d2d !important;
  border: 1px solid #3c3c3c !important;
  border-radius: 3px !important;
  min-width: 180px !important;
  box-shadow: 0 4px 12px rgba(0,0,0,0.4) !important;
  z-index: 1000 !important;
  padding: 4px 0 !important;
  margin-top: 4px !important;
}

.project-dropdown.submenu {
  position: absolute !important;
  right: 100% !important;
  left: auto !important;
  top: 0 !important;
  margin-top: 0 !important;
  margin-right: 4px !important;
}

body:not(.theme-dark) .project-dropdown {
  background: #ffffff !important;
  border: 1px solid #ced4da !important;
  box-shadow: 0 4px 12px rgba(0,0,0,0.15) !important;
}

.project-dropdown-item {
  padding: 8px 16px !important;
  font-size: 13px !important;
  color: #d4d4d4 !important;
  cursor: pointer !important;
  display: flex !important;
  align-items: center !important;
  gap: 10px !important;
  transition: background-color 0.15s ease !important;
}

body:not(.theme-dark) .project-dropdown-item {
  color: #212529 !important;
}

.project-dropdown-item:hover {
  background: #3c3c3c !important;
}

body:not(.theme-dark) .project-dropdown-item:hover {
  background: #f1f3f4 !important;
}

.project-dropdown-shortcut {
  margin-left: auto !important;
  color: #858585 !important;
  font-size: 11px !important;
}

body:not(.theme-dark) .project-dropdown-shortcut {
  color: #6c757d !important;
}

.project-title-display {
  font-size: 13px !important;
  color: #858585 !important;
  font-family: var(--font-ui) !important;
  max-width: 200px !important;
  overflow: hidden !important;
  text-overflow: ellipsis !important;
  white-space: nowrap !important;
  font-weight: 500 !important;
}

body:not(.theme-dark) .project-title-display {
  color: #6c757d !important;
}

@media (max-width: 768px) {
  .project-title-display {
    max-width: 55px !important;
    cursor: pointer !important;
    transition: max-width 0.25s cubic-bezier(0.4, 0, 0.2, 1) !important;
  }
  .project-title-display.expanded {
    max-width: 180px !important;
  }
}

@media (max-width: 420px) {
  #project-btn, #settings-btn {
    display: none !important;
  }
  #more-options-btn {
    display: flex !important;
  }
  /* Never hide the logo and project name! */
  .title-left {
    display: flex !important;
    gap: 6px !important;
  }
  /* Compact toolbar spacing and button padding to fit all elements in one line */
  .toolbar {
    padding: 0 4px !important;
    gap: 2px !important;
  }
  .toolbar-center {
    gap: 2px !important;
    padding: 0 2px !important;
  }
  .btn {
    padding: 4px !important;
    gap: 2px !important;
  }
  .board-select {
    min-width: 55px !important;
    max-width: 75px !important;
    transition: max-width 0.2s ease, min-width 0.2s ease !important;
  }
  .board-select:focus {
    min-width: 120px !important;
    max-width: 150px !important;
  }
  #settings-btn, #more-options-btn {
    width: 28px !important;
    height: 28px !important;
  }
}

/* ─── MAIN CONTAINER & SIDE NAVBAR ─── */
.main-container {
  display: flex;
  width: 100vw;
  height: 100vh;
  overflow: hidden;
  background: var(--bg-main);
  font-family: var(--font-ui);
}

.side-navbar {
  width: 64px;
  height: 100%;
  background: var(--bg-sidebar);
  border-right: 1px solid var(--border);
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  align-items: center;
  padding: 20px 0;
  box-sizing: border-box;
  flex-shrink: 0;
}

.nav-top, .nav-bottom {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 14px;
  width: 100%;
}

.nav-item {
  width: 40px;
  height: 40px;
  border-radius: 10px;
  border: none;
  background: transparent;
  color: var(--text-muted);
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: background-color 0.2s cubic-bezier(0.4, 0, 0.2, 1),
              color 0.2s cubic-bezier(0.4, 0, 0.2, 1);
  position: relative;
}

.nav-item:hover {
  color: var(--text-bright);
  background: var(--bg-hover);
}

.nav-item.active {
  color: var(--accent);
  background: rgba(2, 132, 199, 0.08);
  background: color-mix(in srgb, var(--accent) 12%, transparent);
}

.main-content-area {
  flex: 1;
  height: 100%;
  min-width: 0;
  position: relative;
  overflow: hidden;
}

.view-panel {
  width: 100%;
  height: 100%;
  position: absolute;
  top: 0;
  left: 0;
  display: flex;
  flex-direction: column;
  box-sizing: border-box;
  opacity: 0;
  pointer-events: none;
  transition: transform 0.35s cubic-bezier(0.25, 0.8, 0.25, 1), 
              opacity 0.35s cubic-bezier(0.25, 0.8, 0.25, 1);
}

#sketchbook-view {
  transform: translateX(-20px);
}

#editor-view {
  transform: translateX(20px);
}

#settings-view {
  transform: translateX(20px);
  overflow: hidden;
}



.view-panel.active {
  opacity: 1;
  pointer-events: auto;
  transform: translateX(0) !important;
  z-index: 2;
}

/* ─── SKETCHBOOK HOME PAGE ─── */
.sketchbook-header {
  height: 56px;
  border-bottom: 1px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 24px;
  background: var(--bg-sidebar);
  flex-shrink: 0;
  box-sizing: border-box;
}

.sketchbook-title-left {
  display: flex;
  align-items: center;
  gap: 10px;
}

.sketchbook-brand {
  font-size: 16px;
  font-weight: 600;
  color: var(--text-bright);
  font-family: var(--font-ui);
}

.sketchbook-container {
  display: flex;
  flex: 1;
  overflow: hidden;
}

.sketchbook-sidebar {
  width: 200px;
  background: var(--bg-sidebar);
  border-right: 1px solid var(--border);
  display: flex;
  flex-direction: column;
  padding: 16px 8px;
  gap: 4px;
  flex-shrink: 0;
  box-sizing: border-box;
}

.sidebar-section-title {
  font-size: 11px;
  font-weight: 600;
  text-transform: uppercase;
  color: var(--text-muted);
  letter-spacing: 0.5px;
  padding: 8px 12px;
}

.sidebar-tab-btn {
  text-align: left;
  border: none;
  background: transparent;
  color: var(--text-primary);
  padding: 10px 12px;
  border-radius: 6px;
  font-size: 13px;
  cursor: pointer;
  transition: all 0.15s ease;
  font-family: var(--font-ui);
}

.sidebar-tab-btn:hover {
  background: rgba(0, 0, 0, 0.03);
  color: var(--text-bright);
}

body.theme-dark .sidebar-tab-btn:hover {
  background: rgba(255, 255, 255, 0.03);
}

.sidebar-tab-btn.active {
  background: rgba(0, 0, 0, 0.05);
  color: var(--session-card-accent);
  font-weight: 600;
}

body.theme-dark .sidebar-tab-btn.active {
  background: rgba(255, 255, 255, 0.06);
  color: var(--session-card-accent);
}

.sketchbook-main {
  flex: 1;
  display: flex;
  flex-direction: column;
  overflow: hidden;
  background: var(--bg-main);
  padding: 24px;
  box-sizing: border-box;
}

.search-bar-wrapper {
  margin-bottom: 20px;
  flex-shrink: 0;
}

.search-bar-wrapper input {
  width: 100%;
  max-width: 400px;
  background: var(--bg-sidebar);
  border: 1px solid var(--border);
  border-radius: 8px;
  color: var(--text-bright);
  padding: 10px 16px;
  font-size: 13px;
  outline: none;
  transition: border-color 0.2s ease, box-shadow 0.2s ease;
  box-sizing: border-box;
  font-family: var(--font-ui);
}

.search-bar-wrapper input:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 2px rgba(230, 92, 0, 0.15);
}

.projects-list-header {
  display: grid;
  grid-template-columns: 2fr 1fr 1.5fr 150px;
  padding: 12px 16px;
  background: var(--bg-sidebar);
  border-radius: 8px 8px 0 0;
  border-bottom: 1px solid var(--border);
  font-size: 12px;
  font-weight: 600;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.5px;
  flex-shrink: 0;
  box-sizing: border-box;
}

.projects-list {
  flex: 1;
  overflow-y: auto;
  border: 1px solid var(--border);
  border-top: none;
  border-radius: 0 0 8px 8px;
  background: var(--bg-sidebar);
  box-sizing: border-box;
}

.project-row {
  display: grid;
  grid-template-columns: 2fr 1fr 1.5fr 150px;
  align-items: center;
  padding: 14px 16px;
  border-bottom: 1px solid var(--border);
  font-size: 13px;
  color: var(--text-primary);
  transition: background-color 0.15s ease;
  box-sizing: border-box;
}

.project-row:last-child {
  border-bottom: none;
}

.project-row:hover {
  background: rgba(255, 255, 255, 0.02);
}

.project-name-cell {
  display: flex;
  align-items: center;
  gap: 10px;
  font-weight: 500;
  color: var(--text-bright);
  cursor: pointer;
  min-width: 0;
}

.project-name-cell span {
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.project-name-cell:hover {
  color: var(--accent);
}

.project-name-cell svg {
  color: var(--text-muted);
  flex-shrink: 0;
}

.project-type-badge {
  display: inline-flex;
  align-items: center;
  padding: 3px 8px;
  border-radius: 4px;
  font-size: 11px;
  font-weight: 600;
  text-transform: uppercase;
  width: max-content;
}

.type-blocks {
  background: rgba(230, 92, 0, 0.07);
  color: #d35400;
  border: 1px solid rgba(230, 92, 0, 0.22);
}

body.theme-dark .type-blocks {
  color: #ff7a22;
}

.type-code {
  background: rgba(0, 180, 184, 0.07);
  color: #008286;
  border: 1px solid rgba(0, 180, 184, 0.22);
}

body.theme-dark .type-code {
  color: #00b4b8;
}

.project-actions-cell {
  display: flex;
  gap: 8px;
}

.action-icon-btn {
  background: transparent;
  border: none;
  color: var(--text-muted);
  cursor: pointer;
  padding: 6px;
  border-radius: 4px;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all 0.15s ease;
}

.action-icon-btn:hover {
  color: var(--text-bright);
  background: rgba(255, 255, 255, 0.05);
}

.action-icon-btn.delete-btn:hover {
  color: #f44747;
  background: rgba(244, 71, 71, 0.1);
}

.empty-state-container {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 64px 32px;
  color: var(--text-muted);
  gap: 16px;
  text-align: center;
}

.empty-state-container svg {
  color: var(--border);
  stroke-width: 1.5;
}

.empty-state-title {
  font-size: 16px;
  font-weight: 600;
  color: var(--text-bright);
}

.empty-state-desc {
  font-size: 13px;
  max-width: 320px;
  line-height: 1.5;
}

/* ─── SEARCH & FILTER SELECT ─── */
.search-bar-wrapper {
  display: flex;
  gap: 12px;
  margin-bottom: 20px;
  width: 100%;
}

.search-bar-wrapper input {
  flex: 1;
}

.sketchbook-filter-select {
  background: var(--bg-sidebar);
  border: 1px solid var(--border);
  color: var(--text-bright);
  padding: 8px 12px;
  border-radius: 6px;
  font-size: 13px;
  font-family: var(--font-ui);
  outline: none;
  cursor: pointer;
  transition: border-color 0.2s ease, box-shadow 0.2s ease;
  min-width: 150px;
}

.sketchbook-filter-select:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 2px rgba(230, 92, 0, 0.15);
}

/* Scoped highlight styles for theme-aware session card */
:root {
  --session-card-bg: linear-gradient(135deg, rgba(2, 132, 199, 0.04) 0%, rgba(2, 132, 199, 0.01) 100%);
  --session-card-border: rgba(2, 132, 199, 0.2);
  --session-card-border-hover: rgba(2, 132, 199, 0.45);
  --session-card-accent: var(--accent);
  --session-card-shadow: var(--shadow-sm);
  --session-card-shadow-hover: var(--shadow-md);
}

body.theme-dark {
  --session-card-bg: linear-gradient(135deg, rgba(20, 184, 166, 0.04) 0%, rgba(20, 184, 166, 0.01) 100%);
  --session-card-border: rgba(20, 184, 166, 0.2);
  --session-card-border-hover: rgba(20, 184, 166, 0.45);
  --session-card-accent: var(--accent);
  --session-card-shadow: var(--shadow-sm);
  --session-card-shadow-hover: var(--shadow-md);
}

/* ─── RECENTLY CLOSED / RECENT SESSION CARD ─── */
.recent-session-card {
  background: var(--session-card-bg);
  border: 1px solid var(--session-card-border);
  border-radius: 8px;
  padding: 16px 20px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 24px;
  box-sizing: border-box;
  box-shadow: var(--session-card-shadow);
  backdrop-filter: blur(4px);
  -webkit-backdrop-filter: blur(4px);
  transition: transform 0.2s ease, 
              box-shadow 0.2s ease, 
              border-color 0.2s ease;
}

.recent-session-card:hover {
  transform: translateY(-2px);
  box-shadow: var(--session-card-shadow-hover);
  border-color: var(--session-card-border-hover);
}

.recent-session-info {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.recent-session-header-text {
  font-size: 11px;
  text-transform: uppercase;
  font-weight: 600;
  color: var(--session-card-accent);
  letter-spacing: 0.5px;
  display: flex;
  align-items: center;
  gap: 6px;
}

.recent-session-icon {
  stroke: var(--session-card-accent);
  flex-shrink: 0;
  animation: pulse-glow 2s infinite ease-in-out;
}

@keyframes pulse-glow {
  0%, 100% { opacity: 0.8; transform: scale(1); }
  50% { opacity: 1; transform: scale(1.1); }
}

.recent-session-details {
  display: flex;
  align-items: center;
  gap: 12px;
  flex-wrap: wrap;
}

.recent-project-name {
  font-size: 15px;
  font-weight: 600;
  color: var(--text-bright);
}

.recent-project-time {
  font-size: 12px;
  color: var(--text-muted);
}

.btn-resume-action {
  height: 36px;
  font-size: 13px;
  font-weight: 600;
  padding: 0 18px;
  border-radius: 6px;
  cursor: pointer;
  background: var(--session-card-accent);
  color: #ffffff;
  border: none;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
  transition: background-color 0.2s ease, transform 0.2s ease, box-shadow 0.2s ease;
}

.btn-resume-action svg {
  stroke: #ffffff;
  transition: transform 0.2s ease;
}

.btn-resume-action:hover {
  transform: translateY(-1px);
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
}

.btn-resume-action:hover svg {
  transform: translateX(3px);
}

.btn-resume-action:active {
  transform: translateY(0);
  box-shadow: 0 2px 4px rgba(0, 0, 0, 0.1);
}


/* ─── DASHBOARD CONTENT & CARDS ─── */
.dashboard-action-card {
  background: var(--bg-sidebar) !important;
  border: 1px solid var(--border) !important;
  border-radius: 12px !important;
  box-shadow: var(--shadow-sm) !important;
  transition: transform 0.22s cubic-bezier(0.25, 0.8, 0.25, 1), 
              box-shadow 0.22s cubic-bezier(0.25, 0.8, 0.25, 1), 
              border-color 0.22s cubic-bezier(0.25, 0.8, 0.25, 1),
              background-color 0.22s cubic-bezier(0.25, 0.8, 0.25, 1) !important;
}

.dashboard-action-card:hover {
  transform: translateY(-3px) !important;
  border-color: var(--accent) !important;
  box-shadow: var(--shadow-md) !important;
  background: var(--bg-hover-sidebar) !important;
}

.dashboard-action-card:hover .card-icon {
  transform: scale(1.05);
}

.card-icon {
  border-radius: 8px !important;
  transition: transform 0.22s cubic-bezier(0.25, 0.8, 0.25, 1) !important;
}

.latest-sketch-item {
  background: var(--bg-sidebar) !important;
  border: 1px solid var(--border) !important;
  border-radius: 8px !important;
  padding: 14px 16px !important;
  box-shadow: var(--shadow-sm) !important;
  transition: transform 0.2s cubic-bezier(0.25, 0.8, 0.25, 1), 
              border-color 0.2s cubic-bezier(0.25, 0.8, 0.25, 1), 
              box-shadow 0.2s cubic-bezier(0.25, 0.8, 0.25, 1),
              background-color 0.2s cubic-bezier(0.25, 0.8, 0.25, 1) !important;
}

.latest-sketch-item:hover {
  transform: translateY(-1px) !important;
  border-color: var(--accent) !important;
  box-shadow: var(--shadow-md) !important;
  background: var(--bg-hover-sidebar) !important;
}

.latest-sketch-item:hover .chevron-open {
  transform: translateX(3px);
  color: var(--session-card-accent) !important;
}

/* ─── MOBILE RESPONSIVENESS (HOME & SIDEBAR & SKETCHBOOK) ─── */
@media (max-width: 600px) {
  /* Layout configuration for absolute floating sidebar */
  .main-container {
    flex-direction: row !important;
  }
  
  .side-navbar {
    position: absolute !important;
    bottom: 16px !important;
    left: 16px !important;
    right: 16px !important;
    width: calc(100% - 32px) !important;
    height: 56px !important;
    flex-direction: row !important;
    border: 1px solid rgba(255, 255, 255, 0.12) !important;
    border-radius: 28px !important;
    padding: 0 20px !important;
    justify-content: space-around !important;
    align-items: center !important;
    background: rgba(23, 28, 33, 0.42) !important; /* higher transparency glass backdrop dark theme */
    backdrop-filter: blur(16px) saturate(180%) !important;
    -webkit-backdrop-filter: blur(16px) saturate(180%) !important;
    box-shadow: 0 8px 32px 0 rgba(0, 0, 0, 0.2) !important;
    z-index: 1000 !important;
  }
  
  /* Light theme override for glass sidebar with high transparency */
  body:not(.theme-dark) .side-navbar {
    background: rgba(255, 255, 255, 0.42) !important;
    border: 1px solid rgba(0, 0, 0, 0.08) !important;
    box-shadow: 0 8px 32px 0 rgba(31, 38, 135, 0.08) !important;
  }
  
  .nav-top, .nav-bottom {
    display: contents !important;
  }
  
  .nav-item {
    width: 40px !important;
    height: 40px !important;
    border-radius: 12px !important;
  }
  

  
  .nav-item.active {
    color: var(--accent) !important;
    background: var(--session-card-bg) !important;
    border-radius: 12px !important;
  }
  
  .nav-item.active::before {
    display: none !important;
  }

  /* Content area adjustment */
  .main-content-area {
    height: 100% !important;
  }
  
  #home-view .sketchbook-container,
  #sketchbook-view .sketchbook-main {
    padding-bottom: 88px !important;
  }
  
  /* Header spacing */
  .sketchbook-header {
    padding: 0 16px !important;
    height: 52px !important;
  }
  
  /* Hide part of brand on mobile to save space */
  .brand-sub {
    display: none !important;
  }
  
  /* Dashboard container padding */
  #home-view .sketchbook-container {
    padding: 8px 16px 24px !important;
  }
  
  /* Welcome header font size */
  .dashboard-welcome h1 {
    font-size: 21px !important;
  }
  .dashboard-welcome p {
    font-size: 12px !important;
  }
  
  /* Latest Sketches padding and spacing */
  .latest-sketch-item {
    padding: 8px 12px !important;
    gap: 8px !important;
    border-radius: 6px !important;
  }
  .latest-sketch-item span {
    font-size: 11.5px !important;
  }
  .latest-sketch-item span + span {
    font-size: 8.5px !important;
  }
  .latest-sketch-item span[style*="font-size: 9px"] {
    font-size: 8px !important;
  }
  .latest-sketch-item .project-type-badge {
    font-size: 8px !important;
    padding: 1px 4px !important;
  }
  
  /* Action Cards */
  .dashboard-action-card {
    padding: 18px 20px !important;
    gap: 8px !important;
  }
  
  .dashboard-content {
    gap: 24px !important;
  }

  /* "+ New Project" button mobile override (rounded square, "+" only) */
  #home-new-project-btn .btn-text,
  #sketchbook-new-project-btn .btn-text {
    display: none !important;
  }
  #home-new-project-btn,
  #sketchbook-new-project-btn {
    width: 32px !important;
    padding: 0 !important;
    display: inline-flex !important;
    justify-content: center !important;
    align-items: center !important;
    border-radius: 8px !important;
  }
  #home-new-project-btn svg,
  #sketchbook-new-project-btn svg {
    margin-right: 0 !important;
  }

  /* Sketchbook page mobile responsiveness */
  .search-bar-wrapper {
    display: flex !important;
    flex-direction: column !important;
    gap: 10px !important;
    width: 100% !important;
  }
  .search-bar-wrapper input,
  .search-bar-wrapper select {
    max-width: 100% !important;
    width: 100% !important;
  }
  .projects-list-header {
    display: none !important;
  }
  .projects-list {
    border-radius: 8px !important;
    border-top: 1px solid var(--border) !important;
  }
  .project-row {
    display: grid !important;
    grid-template-columns: 1fr auto !important;
    grid-template-rows: auto auto !important;
    row-gap: 4px !important;
    column-gap: 12px !important;
    padding: 5px 12px !important;
  }
  .project-row > :nth-child(1) {
    grid-column: 1 !important;
    grid-row: 1 !important;
  }
  .project-row > :nth-child(2) {
    grid-column: 2 !important;
    grid-row: 1 !important;
    justify-self: end !important;
  }
  .project-row > :nth-child(3) {
    grid-column: 1 !important;
    grid-row: 2 !important;
    font-size: 11px !important;
    color: var(--text-muted) !important;
    padding-left: 26px !important;
    align-self: center !important;
  }
  .project-row > :nth-child(4) {
    grid-column: 2 !important;
    grid-row: 2 !important;
    justify-self: end !important;
  }

  /* Sketchbook rows — mobile: compact name + badge + date */
  .project-row .project-name-cell span {
    font-size: 12px !important;
  }
  .project-row .project-type-badge {
    font-size: 8.5px !important;
    padding: 1px 4.5px !important;
  }
  .project-row > :nth-child(3) {
    font-size: 10px !important;
  }
}

/* ─── PREMIUM MINIMAL SETTINGS OVERRIDES ─── */
#settings-view div[style*="background: var(--bg-sidebar)"]:not(#open-settings-about-page):not(#open-settings-profile-page) {
  background: var(--bg-sidebar) !important;
  border: 1px solid var(--border) !important;
  border-radius: 12px !important;
  box-shadow: var(--shadow-sm) !important;
  padding: 24px !important;
  transition: box-shadow 0.2s ease, border-color 0.2s ease !important;
}

#open-settings-about-page,
#open-settings-profile-page {
  background: var(--bg-sidebar) !important;
  border: 1px solid var(--border) !important;
  border-radius: 12px !important;
  padding: 14px 20px !important;
  box-shadow: var(--shadow-sm) !important;
  transition: background-color 0.2s, border-color 0.2s, box-shadow 0.2s !important;
}

#open-settings-about-page:hover,
#open-settings-profile-page:hover {
  background: var(--bg-hover) !important;
  border-color: var(--accent) !important;
  box-shadow: var(--shadow-md) !important;
}

#test-connection-btn-page,
#test-connection-custom-btn-page,
#settings-save-custom-url-btn {
  background: var(--accent) !important;
  color: var(--btn-primary-text) !important;
  font-weight: 600 !important;
  border-radius: 6px !important;
  border: none !important;
  padding: 8px 16px !important;
  font-family: var(--font-ui) !important;
  font-size: 12px !important;
  cursor: pointer !important;
  transition: opacity 0.2s, transform 0.1s !important;
}

#test-connection-btn-page:hover,
#test-connection-custom-btn-page:hover,
#settings-save-custom-url-btn:hover {
  opacity: 0.9 !important;
}

#test-connection-btn-page:active,
#test-connection-custom-btn-page:active,
#settings-save-custom-url-btn:active {
  transform: scale(0.98) !important;
}

#open-server-setup-modal-btn,
#settings-cancel-custom-url-btn {
  background: transparent !important;
  color: var(--text-primary) !important;
  border: 1px solid var(--border) !important;
  font-weight: 600 !important;
  border-radius: 6px !important;
  padding: 8px 16px !important;
  font-family: var(--font-ui) !important;
  font-size: 12px !important;
  cursor: pointer !important;
  transition: background-color 0.2s, border-color 0.2s, color 0.2s !important;
}

#open-server-setup-modal-btn:hover,
#settings-cancel-custom-url-btn:hover {
  background: var(--bg-hover) !important;
  border-color: var(--accent) !important;
  color: var(--accent) !important;
}

#server-mode-tabs-page {
  background: var(--bg-main) !important;
  border: 1px solid var(--border) !important;
  border-radius: 8px !important;
  padding: 3px !important;
}

#server-mode-online-page,
#server-mode-custom-page {
  border: none !important;
  border-radius: 6px !important;
  font-size: 11px !important;
  font-weight: 600 !important;
  padding: 6px 12px !important;
  cursor: pointer !important;
  font-family: var(--font-ui) !important;
  transition: background-color 0.2s, color 0.2s !important;
}

#settings-page-slider input[type="text"] {
  background: var(--input-bg) !important;
  border: 1px solid var(--input-border) !important;
  color: var(--input-text) !important;
  border-radius: 6px !important;
  padding: 8px 12px !important;
  font-size: 13px !important;
  transition: border-color 0.2s, box-shadow 0.2s !important;
}

#settings-page-slider input[type="text"]:focus {
  border-color: var(--accent) !important;
  box-shadow: 0 0 0 2px color-mix(in srgb, var(--accent) 20%, transparent) !important;
  outline: none !important;
}

#settings-page-slider select,
.settings-select {
  appearance: none !important;
  -webkit-appearance: none !important;
  background: var(--bg-main) !important;
  border: 1px solid var(--border) !important;
  color: var(--text-primary) !important;
  border-radius: 6px !important;
  padding: 0 28px 0 10px !important;
  font-size: 12px !important;
  font-weight: 600 !important;
  height: 30px !important;
  line-height: normal !important;
  cursor: pointer !important;
  transition: border-color 0.2s, box-shadow 0.2s !important;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 16 16'%3E%3Cpath fill='%23858585' d='M4.2 5.8l3.8 3.8 3.8-3.8.7.7-4.5 4.5-4.5-4.5z'/%3E%3C/svg%3E") !important;
  background-repeat: no-repeat !important;
  background-position: right 8px center !important;
  background-size: 10px !important;
  box-sizing: border-box !important;
}

body.theme-dark #settings-page-slider select,
body.theme-dark .settings-select {
  background: var(--input-bg) !important;
  border-color: var(--input-border) !important;
  color: var(--input-text) !important;
}

#settings-page-slider select:focus,
.settings-select:focus {
  border-color: var(--accent) !important;
  outline: none !important;
}

#settings-page-slider {
  display: flex !important;
  width: 200% !important;
  flex-shrink: 0 !important;
}

/* ─── EXTRA RESPONSIVENESS OVERRIDES FOR SMALL MOBILE AND WORKSPACE PANELS ─── */
@media (max-width: 480px) {
  #settings-page-main {
    padding: 16px 12px 88px !important;
  }
  .settings-grid {
    grid-template-columns: 1fr !important;
    gap: 12px !important;
  }
  #sketchbook-view .sketchbook-main {
    padding: 12px 12px 88px !important;
  }
  .quick-start-grid {
    grid-template-columns: 1fr !important;
    gap: 12px !important;
  }
  .variable-modal {
    max-width: calc(100% - 24px) !important;
    width: 100% !important;
  }
  .function-modal {
    max-width: calc(100% - 24px) !important;
    width: 100% !important;
  }
}

@media (max-width: 360px) {
  .board-select {
    max-width: 80px !important;
    min-width: 70px !important;
    font-size: 12px !important;
  }
}

/* ─── FLUID RESPONSIVE WORKSPACE & TOOLBAR SCALING ─── */
@media (max-width: 1250px) {
  /* Hides Web Serial badge and verify/upload text labels */
  .title-badge {
    display: none !important;
  }
  #verify-label,
  #upload-label {
    display: none !important;
  }
  .btn {
    padding: 6px 10px !important;
  }
}

@media (max-width: 1130px) {
  /* Hides Settings and Connect Board text labels */
  #connect-label,
  #settings-btn span:not(.btn-icon) {
    display: none !important;
  }
  /* Compress board selector and title display */
  .board-select {
    max-width: 110px !important;
    min-width: 90px !important;
  }
  .project-title-display {
    max-width: 100px !important;
  }
}

@media (max-width: 930px) {
  /* Hide Brand Name text ("i coding"), showing only logo icon */
  .title-text {
    display: none !important;
  }
  /* Hide Disconnected status text label */
  .status-text {
    display: none !important;
  }
  .board-select {
    max-width: 95px !important;
    min-width: 85px !important;
  }
}

@media (max-width: 850px) {
  /* Keep project title display visible but compact on narrow toolbars to fit core icons */
  .project-title-display {
    max-width: 50px !important;
  }
  .board-select {
    max-width: 80px !important;
    min-width: 70px !important;
    font-size: 12px !important;
    padding: 4px 6px !important;
  }
  .toolbar {
    padding: 0 6px !important;
    gap: 4px !important;
  }
}