/* ==========================================================================
   MATERIAL 3 EXPRESSIVE DESIGN TOKENS & CORE PALETTE
   ========================================================================== */
:root {
  /* Material 3 Dark Palette (Unified) */
  --md-sys-color-primary: #a8c7fa;
  --md-sys-color-on-primary: #083063;
  --md-sys-color-primary-container: #284777;
  --md-sys-color-on-primary-container: #d6e3ff;
  
  --md-sys-color-secondary: #bec6dc;
  --md-sys-color-on-secondary: #283141;
  --md-sys-color-secondary-container: #3e4759;
  --md-sys-color-on-secondary-container: #dae2f9;

  --md-sys-color-tertiary: #debcdf;
  --md-sys-color-on-tertiary: #402843;
  --md-sys-color-tertiary-container: #583e5b;
  --md-sys-color-on-tertiary-container: #fad8fb;

  --md-sys-color-surface: #111318;
  --md-sys-color-surface-dim: #111318;
  --md-sys-color-surface-bright: #37393e;
  --md-sys-color-surface-container-lowest: #0c0e13;
  --md-sys-color-surface-container-low: #191c20;
  --md-sys-color-surface-container: #1d2024;
  --md-sys-color-surface-container-high: #282a2f;
  --md-sys-color-surface-container-highest: #33353a;
  
  --md-sys-color-on-surface: #e2e2e9;
  --md-sys-color-on-surface-variant: #c4c6d0;
  --md-sys-color-outline: #8e9099;
  --md-sys-color-outline-variant: #44474e;

  /* Backward-compatible token aliases */
  --main-bg: var(--md-sys-color-surface);
  --appbar-bg: #1a1d22;
  --body-text: var(--md-sys-color-on-surface);
  --sec-text: var(--md-sys-color-on-surface-variant);
  --atv-btn: var(--md-sys-color-primary-container);
  --atv-btn-text: var(--md-sys-color-on-primary-container);
  --box-shadow: 0px 4px 16px rgba(0, 0, 0, 0.35);
  --iatv-btn: var(--md-sys-color-surface-container-high);
  --iatv-btn-text: var(--md-sys-color-on-surface-variant);
  --iatv-btn-border: var(--md-sys-color-outline-variant);
  --primary: var(--md-sys-color-primary);
  --cardBg: var(--md-sys-color-surface-container);
  --outline: var(--md-sys-color-outline-variant);

  /* Syntax & Language Accent Tokens */
  --lang-html: #ff7b5c;
  --lang-css: #70b8ff;
  --lang-js: #ffd43f;
  --lang-bridge: #c9b2ff;

  --green: #4ade80;
  --blue: #60a5fa;

  /* Block editor palette */
  --block-blue: #2f80ed;
  --block-blue-row: #4d97f2;
  --block-pill: #12151b;

  /* Material 3 Shapes */
  --radius-full: 9999px;
  --radius-xl: 28px;
  --radius-lg: 24px;
  --radius-md: 16px;
  --radius-sm: 8px;
}

* { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; overflow-x: hidden; width: 100%; }
body {
  font-family: 'Segoe UI', sans-serif;
  line-height: 1.6;
  color: var(--body-text);
  background: var(--main-bg);
  padding-bottom: 80px; /* Leave space for mobile bottom bar */
  overflow-x: hidden;
  width: 100%;
}
h1, h2, h3, h4 { font-family: 'Quicksand', sans-serif; font-weight: 600; }
p { color: var(--sec-text); margin-bottom: 12px; }
code { font-family: 'JetBrains Mono', monospace; font-size: 0.85em; background: var(--cardBg); padding: 2px 6px; border-radius: 6px; color: var(--body-text); }
b { color: var(--body-text); }
a { color: inherit; text-decoration: none; }

/* =========================
   APP BAR
========================= */
.appbar {
  position: sticky; top: 0; z-index: 50;
  background: var(--appbar-bg);
  border-bottom: 1px solid var(--iatv-btn-border);
}
.appbar-row {
  display: flex; align-items: flex-start; gap: 14px;
  padding: 14px 18px 6px;
}
.icon-btn {
  width: 36px; height: 36px; border-radius: 50%;
  display: inline-flex; align-items: center; justify-content: center;
  background: var(--iatv-btn); color: var(--iatv-btn-text);
  border: 1px solid var(--iatv-btn-border);
  font-size: 16px; cursor: pointer; flex: none;
  transition: background 0.2s ease, transform 0.2s ease;
}
.icon-btn:hover { background: var(--cardBg); transform: translateY(-1px); }
.icon-btn.ghost { background: transparent; border-color: transparent; opacity: 0.7; }
.appbar-titles { flex: 1; min-width: 0; }
.appbar-titles h1 { font-size: 19px; color: var(--body-text); }
.appbar-titles .sub { font-size: 12.5px; color: var(--sec-text); }
.appbar-icons { display: flex; gap: 6px; flex: none; }

/* Floating Expressive Nav Bar */
.expressive-button-group {
  position: fixed;
  left: 20px;
  top: 50%;
  transform: translateY(-50%);
  display: flex;
  align-items: flex-start;
  flex-direction: column;
  z-index: 99999;
  gap: 8px;
  background: transparent;
}

.expressive-btn {
  background-color: var(--iatv-btn);
  color: var(--iatv-btn-text);
  border: 1px solid var(--iatv-btn-border);
  padding: 0 16px;
  font-size: 1.2rem;
  font-weight: 800;
  cursor: pointer;
  height: 42px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
  white-space: nowrap;
  text-decoration: none;
  transition:
    background-color 0.2s ease,
    color 0.2s ease,
    border-radius 0.4s cubic-bezier(0.2, 0, 0, 1),
    border-color 0.4s cubic-bezier(0.2, 0, 0, 1),
    transform 0.2s ease;
}

.expressive-btn .label-text {
  max-width: 0;
  opacity: 0;
  margin-left: 0;
  font-size: 0.95rem;
  font-weight: 600;
  letter-spacing: 0.1px;
  overflow: hidden;
  white-space: nowrap;
  transition:
    max-width 0.4s cubic-bezier(0.2, 0, 0, 1),
    opacity 0.2s cubic-bezier(0.2, 0, 0, 1),
    margin-left 0.4s cubic-bezier(0.2, 0, 0, 1);
}

.expressive-btn .ti {
  font-size: 1.25rem;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  line-height: 1;
}

.expressive-button-group .expressive-btn:first-child {
  border-radius: 24px 24px 8px 8px;
}

.expressive-button-group .expressive-btn:not(:first-child):not(:last-child) {
  border-radius: 8px;
}

.expressive-button-group .expressive-btn:last-child {
  border-radius: 8px 8px 24px 24px;
}

.expressive-button-group .expressive-btn.active {
  background-color: var(--atv-btn);
  color: var(--atv-btn-text);
  border-color: transparent;
  border-radius: 24px !important;
  box-shadow: var(--box-shadow);
  padding: 0 24px;
}

.expressive-button-group .expressive-btn.active .label-text {
  max-width: 120px;
  opacity: 1;
  margin-left: 8px;
}

.expressive-button-group .expressive-btn:not(.active):hover {
  background-color: var(--cardBg);
  border-color: var(--iatv-btn-border);
}

.expressive-button-group .expressive-btn:not(.active):hover .label-text {
  max-width: 120px;
  opacity: 1;
  margin-left: 8px;
}

.statbar {
  display: flex; align-items: center; justify-content: space-between;
  padding: 10px 18px 14px; gap: 10px; flex-wrap: wrap;
}
.count { font-size: 12px; color: var(--outline); }
.statbar-actions { display: flex; gap: 8px; }

.pill {
  border: none; cursor: pointer; font-family: 'Segoe UI', sans-serif;
  font-size: 12.5px; font-weight: 700; color: #0e1116;
  padding: 8px 16px; border-radius: 100px;
  display: inline-flex; align-items: center; gap: 6px;
  transition: transform 0.2s ease, filter 0.2s ease;
}
.pill:hover { filter: brightness(1.08); transform: translateY(-1px); }
.pill-green { background: var(--green); color: #06210f; }
.pill-blue { background: var(--blue); color: #eaf1ff; }

/* =========================
   LAYOUT / SECTIONS
========================= */
main { max-width: 760px; margin: 0 auto; padding: 0 18px; }

.intro { padding: 32px 0 8px; }
.eyebrow {
  font-size: 11px; text-transform: uppercase; letter-spacing: 0.08em;
  color: var(--primary); font-weight: 700; margin-bottom: 10px;
}
.intro h2 { font-size: clamp(24px, 6vw, 32px); color: var(--body-text); line-height: 1.15; margin-bottom: 12px; }
.lede { font-size: 15px; }

.doc-section {
  padding: 34px 0; border-top: 1px solid var(--iatv-btn-border);
  scroll-margin-top: 150px;
}
.doc-section h3 { font-size: 20px; color: var(--body-text); margin-bottom: 10px; }

.chip {
  display: inline-flex; align-items: center; gap: 6px;
  font-size: 11px; font-weight: 700; text-transform: uppercase; letter-spacing: 0.05em;
  padding: 4px 12px; border-radius: 100px; margin-bottom: 12px;
}
.chip-html { background: rgba(227, 76, 38, 0.15); color: var(--lang-html); }
.chip-css { background: rgba(99, 179, 237, 0.15); color: var(--lang-css); }
.chip-js { background: rgba(241, 224, 90, 0.15); color: var(--lang-js); }
.chip-bridge { background: rgba(179, 157, 219, 0.15); color: var(--lang-bridge); }

/* =========================
   ANATOMY
========================= */
.anatomy { background: var(--cardBg); border: 1px solid var(--iatv-btn-border); border-radius: var(--radius-md); padding: 16px; margin: 14px 0; }
.anatomy-line { display: block; font-size: 14px; overflow-x: auto; white-space: pre; margin-bottom: 14px; background: none; padding: 0; }
.a-tag { color: var(--lang-html); }
.a-attr { color: var(--lang-js); }
.a-val { color: #8fe28a; }
.a-content { color: var(--body-text); }
.anatomy-legend { list-style: none; display: flex; flex-direction: column; gap: 8px; font-size: 12.5px; color: var(--sec-text); }
.dot { width: 8px; height: 8px; border-radius: 3px; display: inline-block; margin-right: 8px; }
.dot-tag { background: var(--lang-html); }
.dot-attr { background: var(--lang-js); }
.dot-val { background: #8fe28a; }
.dot-content { background: var(--body-text); }

/* =========================
   DOM TREE
========================= */
.tree { font-family: 'JetBrains Mono', monospace; font-size: 13px; background: var(--cardBg); border: 1px solid var(--iatv-btn-border); border-radius: var(--radius-md); padding: 16px; }
.tree-node {
  color: var(--lang-html); padding: 6px 0 6px 16px;
  border-left: 1px dashed var(--outline);
}
.tree-node.leaf { color: var(--sec-text); }

/* =========================
   MINI CARDS / DUO
========================= */
.duo, .grid-2 { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; margin-top: 14px; }
.mini-card { background: var(--cardBg); border: 1px solid var(--iatv-btn-border); border-radius: var(--radius-md); padding: 16px; }
.mini-title { font-size: 13px; font-weight: 700; color: var(--body-text); margin-bottom: 8px; display: flex; align-items: center; gap: 8px; }
.tagchip { font-family: 'JetBrains Mono', monospace; font-size: 10.5px; padding: 2px 8px; border-radius: 6px; }
.tagchip.id { background: rgba(227, 76, 38, 0.15); color: var(--lang-html); }
.tagchip.class { background: rgba(99, 179, 237, 0.15); color: var(--lang-css); }
.mini-card ul { list-style: none; display: flex; flex-direction: column; gap: 8px; font-size: 12.5px; color: var(--sec-text); }

.code-block {
  font-family: 'JetBrains Mono', monospace; font-size: 12.5px; line-height: 1.65;
  background: var(--main-bg); border: 1px solid var(--iatv-btn-border);
  border-radius: var(--radius-sm); padding: 14px 16px; overflow-x: auto;
  color: var(--body-text); white-space: pre;
}
.caption { font-size: 12.5px; color: var(--outline); margin-top: 16px; }

/* =========================
   TABLE
========================= */
.table-wrap { overflow-x: auto; margin-top: 12px; background-color: var(--cardBg); border-radius: 24px; border: 1px solid var(--iatv-btn-border); }
table { width: 100%; border-collapse: collapse; font-size: 12.8px; min-width: 420px; }
th { text-align: left; font-size: 10.5px; text-transform: uppercase; letter-spacing: 0.04em; color: var(--atv-btn-text); padding: 10px 12px; border-bottom: 1px solid var(--iatv-btn-border); background-color: var(--atv-btn);}
td { padding: 9px 10px; border-bottom: 1px solid var(--iatv-btn-border); color: var(--body-text); }
td :last-child {border-bottom: 0px; }

/* =========================
   BLOCK EDITOR — mirrors the DragWeb Logic Blocks screenshot
========================= */
.block {
  background: var(--block-blue);
  border-radius: var(--radius-lg);
  padding: 14px; margin: 16px 0;
  box-shadow: var(--box-shadow);
}
.block-logic { background: #7c5cd6; }
.block-logic .block-row { background: #9179e0; }
.block-header { display: flex; align-items: center; gap: 8px; margin-bottom: 10px; padding: 0 4px; }
.block-caret { color: #fff; opacity: 0.85; font-size: 11px; }
.block-name {
  background: #fff; color: #12151b; font-weight: 700;
  font-size: 12.5px; padding: 4px 14px; border-radius: 100px;
}
.block-brace { color: #fff; opacity: 0.75; font-weight: 700; }
.block-rows { display: flex; flex-direction: column; gap: 8px; }
.block-row {
  background: var(--block-blue-row); border-radius: var(--radius-sm);
  padding: 10px 12px; display: flex; align-items: center; gap: 10px;
}
.block-row .icon { color: #fff; opacity: 0.55; font-size: 12px; }
.block-row .prop { color: #fff; font-weight: 700; font-size: 12.5px; flex: 1; }
.block-row .val {
  background: var(--block-pill); color: #fff; font-weight: 600;
  font-size: 11.8px; padding: 5px 12px; border-radius: 100px;
  white-space: nowrap;
}
.block-nested { margin: 10px 0 0 20px; }

/* =========================
   PIPELINE
========================= */
.pipeline { display: flex; flex-direction: column; gap: 10px; margin-top: 16px; }
.pipe-step { background: var(--cardBg); border: 1px solid var(--iatv-btn-border); border-radius: var(--radius-md); padding: 14px 16px; }
.pipe-step .n { font-family: 'JetBrains Mono', monospace; font-size: 10.5px; color: var(--lang-bridge); }
.pipe-step h4 { font-size: 14px; margin: 4px 0 3px; color: var(--body-text); }
.pipe-step p { font-size: 12.3px; margin: 0; }

/* =========================
   GENERATE-CODE PANEL
========================= */
.gen-panel { overflow: hidden; max-height: 0; opacity: 0; margin-top: 0; padding-top: 0; padding-bottom: 0; transition: max-height 0.35s ease, opacity 0.25s ease, margin-top 0.35s ease; }
.gen-panel.open { max-height: 240px; opacity: 1; margin-top: 12px; padding-top: 14px; padding-bottom: 14px; }

/* =========================
   INTERACTIVE SANDBOX
========================= */
.sandbox-container {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 20px;
  margin-top: 18px;
}

.sandbox-controls {
  background: var(--cardBg);
  border: 1px solid var(--iatv-btn-border);
  border-radius: var(--radius-md);
  padding: 20px;
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.control-group {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.control-group label {
  font-size: 13px;
  font-weight: 700;
  color: var(--sec-text);
}

.val-badge {
  font-family: 'JetBrains Mono', monospace;
  font-size: 11px;
  background: var(--main-bg);
  border: 1px solid var(--iatv-btn-border);
  border-radius: 6px;
  padding: 2px 8px;
  color: var(--primary);
}

.sb-select, .sb-input {
  background: var(--main-bg);
  color: var(--body-text);
  border: 1px solid var(--iatv-btn-border);
  padding: 8px 12px;
  border-radius: var(--radius-sm);
  font-size: 13.5px;
  outline: none;
  font-family: inherit;
  transition: border-color 0.2s, box-shadow 0.2s;
}

.sb-select:focus, .sb-input:focus {
  border-color: var(--primary);
  box-shadow: 0 0 8px rgba(170, 199, 255, 0.2);
}

.sb-slider {
  -webkit-appearance: none;
  appearance: none;
  width: 100%;
  height: 6px;
  background: var(--main-bg);
  border-radius: 10px;
  outline: none;
}

.sb-slider::-webkit-slider-thumb {
  -webkit-appearance: none;
  appearance: none;
  width: 16px;
  height: 16px;
  border-radius: 50%;
  background: var(--primary);
  cursor: pointer;
  transition: transform 0.1s ease, background 0.2s;
  box-shadow: 0 0 6px rgba(0, 0, 0, 0.4);
}

.sb-slider::-webkit-slider-thumb:hover {
  transform: scale(1.2);
  background: #c6dcff;
}

.switch-group {
  margin-top: 6px;
}

.switch-label {
  display: flex;
  align-items: center;
  gap: 10px;
  cursor: pointer;
  user-select: none;
  font-size: 13.5px;
}

.switch-label input {
  display: none;
}

.switch-custom {
  width: 36px;
  height: 20px;
  background: var(--main-bg);
  border: 1px solid var(--iatv-btn-border);
  border-radius: 10px;
  position: relative;
  transition: background 0.2s, border-color 0.2s;
}

.switch-custom::after {
  content: "";
  position: absolute;
  top: 3px;
  left: 3px;
  width: 12px;
  height: 12px;
  background: var(--outline);
  border-radius: 50%;
  transition: transform 0.2s ease, background 0.2s;
}

.switch-label input:checked + .switch-custom {
  background: var(--atv-btn);
  border-color: var(--primary);
}

.switch-label input:checked + .switch-custom::after {
  transform: translateX(16px);
  background: var(--atv-btn-text);
}

.sandbox-preview-area {
  display: flex;
  flex-direction: column;
  background: var(--cardBg);
  border: 1px solid var(--iatv-btn-border);
  border-radius: var(--radius-md);
  padding: 20px;
  gap: 16px;
}

.preview-header {
  font-size: 14px;
  font-weight: 700;
  color: var(--sec-text);
}

.preview-box {
  background: var(--main-bg);
  border: 1px solid var(--iatv-btn-border);
  border-radius: var(--radius-sm);
  min-height: 180px;
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
  overflow: hidden;
  padding: 20px;
}

#sandboxPreviewWrapper {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 100%;
}

.styled-widget {
  transition: transform 0.2s cubic-bezier(0.175, 0.885, 0.32, 1.275), box-shadow 0.2s, background-color 0.3s;
  font-family: 'Quicksand', sans-serif;
  text-decoration: none;
  border: none;
  outline: none;
  font-weight: 700;
  text-align: center;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.2);
}

.styled-widget.clickable {
  cursor: pointer;
}

.styled-widget.clickable:hover {
  transform: scale(1.05) translateY(-2px);
  box-shadow: 0 6px 18px rgba(0, 0, 0, 0.3);
}

.styled-widget.clickable:active {
  transform: scale(0.95);
}

.styled-widget.widget-button {
  border: 1px solid rgba(255, 255, 255, 0.1);
}

.styled-widget.widget-text {
  box-shadow: none;
}

.styled-widget.widget-card {
  border: 1px solid var(--iatv-btn-border);
}

.counter-overlay {
  position: absolute;
  bottom: 10px;
  right: 10px;
  background: rgba(17, 19, 24, 0.85);
  border: 1px solid var(--iatv-btn-border);
  font-family: 'JetBrains Mono', monospace;
  font-size: 11px;
  padding: 4px 10px;
  border-radius: 6px;
  color: var(--sec-text);
  pointer-events: none;
}

.code-tabs {
  display: flex;
  gap: 4px;
  border-bottom: 1px solid var(--iatv-btn-border);
  padding-bottom: 8px;
}

.code-tab {
  background: transparent;
  color: var(--sec-text);
  border: none;
  font-family: inherit;
  font-size: 13px;
  font-weight: 700;
  padding: 6px 14px;
  cursor: pointer;
  border-radius: var(--radius-sm);
  transition: background 0.2s, color 0.2s;
}

.code-tab.active {
  background: var(--iatv-btn);
  color: var(--body-text);
  border: 1px solid var(--iatv-btn-border);
}

.code-tab:hover:not(.active) {
  color: var(--body-text);
  background: rgba(255, 255, 255, 0.05);
}

.code-viewer {
  flex: 1;
}

.code-viewer pre {
  margin: 0;
  height: auto;
}

@media (max-width: 640px) {
  .sandbox-container {
    grid-template-columns: 1fr;
  }
}

footer { text-align: center; padding: 30px 0 10px; font-size: 12px; color: var(--outline); border-top: 1px solid var(--iatv-btn-border); margin-top: 20px; }

/* =========================
   RESPONSIVE — mobile first, this is the base; widen for larger screens
========================= */
@media (min-width: 640px) {
  .appbar-row { padding: 18px 28px 8px; }
  .tabbar { padding: 10px 28px; }
  .statbar { padding: 10px 28px 16px; }
  main { padding: 0 28px; }
}

@media (max-width: 560px) {
  .duo, .grid-2 { grid-template-columns: 1fr; }
  .appbar-titles h1 { font-size: 17px; }
  .intro h2 { max-width: 100%; }
  .block-nested { margin-left: 12px; }
  .statbar { flex-direction: column; align-items: flex-start; }
}

@media (max-width: 768px) {
  .expressive-button-group {
    flex-direction: row;
    flex-wrap: nowrap;
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
    justify-content: flex-start;
    left: 0;
    right: 0;
    top: auto;
    bottom: 0;
    width: 100%;
    transform: none;
    position: fixed;
    padding: 10px 18px 24px 18px; /* Extra bottom padding for mobile safe area */
    gap: 8px;
    scrollbar-width: none;
    background: rgba(17, 19, 24, 0.85);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border-top: 1px solid var(--iatv-btn-border);
    box-shadow: 0 -4px 20px rgba(0, 0, 0, 0.4);
  }

  .expressive-button-group::-webkit-scrollbar {
    display: none;
  }

  .expressive-button-group .expressive-btn {
    flex-shrink: 0;
  }

  .expressive-button-group .expressive-btn:first-child {
    border-radius: 24px 8px 8px 24px;
  }

  .expressive-button-group .expressive-btn:last-child {
    border-radius: 8px 24px 24px 8px;
  }

  .expressive-button-group .expressive-btn:not(.active):hover .label-text {
    max-width: 0;
    opacity: 0;
    margin-left: 0;
  }

  .expressive-button-group .expressive-btn:not(.active):hover {
    background-color: var(--iatv-btn);
    border-color: var(--iatv-btn-border);
  }
}

@media (prefers-reduced-motion: reduce) {
  * { transition-duration: 0.01ms !important; scroll-behavior: auto !important; }
}

/* ========================================================
   DETAILED FUNDAMENTALS STYLE EXPORT
   ======================================================== */

/* ---- Tags Anatomy ---- */
.anatomy { margin: 20px 0; }
.anatomy-code { font-family: 'JetBrains Mono', monospace; font-size: 15px; background: var(--main-bg); border: 1px solid var(--iatv-btn-border); border-radius: var(--radius-md); padding: 16px 20px; word-break: break-all; }
.anatomy-code .part { position: relative; padding: 2px 1px; border-radius: 4px; cursor: default; transition: background 0.15s ease; }
.anatomy-code .part:hover { background: rgba(255, 255, 255, 0.05); }
.anatomy-legend { display: grid; grid-template-columns: repeat(auto-fit, minmax(160px, 1fr)); gap: 12px; margin-top: 14px; list-style: none; padding: 0; }
.anatomy-legend .item { display: flex; gap: 8px; align-items: flex-start; font-size: 12px; color: var(--sec-text); }
.anatomy-legend .sw { width: 10px; height: 10px; border-radius: 3px; margin-top: 4px; flex: none; }
.part.p-tag { color: var(--lang-html); } .sw.s-tag { background: var(--lang-html); }
.part.p-attr { color: var(--lang-js); } .sw.s-attr { background: var(--lang-js); }
.part.p-val { color: var(--green); } .sw.s-val { background: var(--green); }
.part.p-content { color: var(--body-text); } .sw.s-content { background: var(--body-text); }

/* ---- DOM Tree ---- */
.card-wrap { background: var(--cardBg); border: 1px solid var(--iatv-btn-border); border-radius: var(--radius-md); padding: 18px; }
.tree { font-family: 'JetBrains Mono', monospace; font-size: 12px; }
.tree ul { list-style: none; margin: 0; padding-left: 18px; border-left: 1px dashed var(--iatv-btn-border); }
.tree > ul { padding-left: 0; border-left: none; }
.tree li { padding: 4px 0; position: relative; }
.node { display: inline-flex; align-items: center; gap: 8px; padding: 2px 8px; border-radius: 6px; background: var(--main-bg); border: 1px solid var(--iatv-btn-border); }
.node .tagname { color: var(--lang-html); font-weight: 700; }
.node .role { font-size: 10px; color: var(--outline); font-family: 'Quicksand', sans-serif; }

/* ---- Class vs ID tags ---- */
.flex-card { display: flex; flex-direction: column; justify-content: space-between; }
.tagchip { font-family: 'JetBrains Mono', monospace; font-size: 10px; padding: 2px 6px; border-radius: 4px; font-weight: 700; }
.tagchip.id { background: rgba(255, 122, 80, 0.15); color: var(--lang-html); }
.tagchip.class { background: rgba(92, 200, 255, 0.15); color: var(--lang-css); }

/* ---- CSS Box Model ---- */
.boxmodel-wrap { display: grid; grid-template-columns: 1.1fr 0.9fr; gap: 20px; align-items: center; margin-top: 18px; }
@media (max-width: 640px) { .boxmodel-wrap { grid-template-columns: 1fr; } }
.bm-layer { transition: background 0.15s ease, outline-color 0.15s ease; position: relative; }
.bm-margin { background: rgba(92, 200, 255, 0.05); border: 1px dashed rgba(92, 200, 255, 0.3); border-radius: 12px; padding: var(--m, 18px); }
.bm-border { background: rgba(244, 180, 0, 0.08); border: 1px solid rgba(244, 180, 0, 0.3); border-radius: 8px; padding: 6px; }
.bm-border.disabled { border-color: transparent; background: transparent; padding: 0; }
.bm-border.disabled .bm-tag { display: none; }
.bm-padding { background: rgba(255, 122, 80, 0.08); border-radius: 6px; padding: var(--p, 16px); }
.bm-content { background: var(--main-bg); border: 1px solid var(--iatv-btn-border); border-radius: 4px; padding: 12px; text-align: center; font-family: 'JetBrains Mono', monospace; font-size: 11px; color: var(--body-text); }
.bm-tag { position: absolute; top: 2px; left: 6px; font-size: 8.5px; font-family: 'JetBrains Mono', monospace; text-transform: uppercase; letter-spacing: .04em; opacity: .7; }
.bm-margin .bm-tag { color: var(--lang-css); }
.bm-border .bm-tag { color: var(--lang-js); top: auto; bottom: 2px; right: 6px; left: auto; }
.bm-padding .bm-tag { color: var(--lang-html); }
.sliders { display: flex; flex-direction: column; gap: 14px; }
.slider-row label { display: flex; justify-content: space-between; font-family: 'JetBrains Mono', monospace; font-size: 11px; margin-bottom: 4px; }

/* ---- JS Block Stack ---- */
.stack { display: flex; flex-direction: column; gap: 6px; max-width: 420px; margin-top: 14px; }
.puzzle {
  position: relative; padding: 10px 14px 10px 20px; border-radius: 8px;
  font-family: 'JetBrains Mono', monospace; font-size: 11.5px; color: #1B1620;
  display: flex; align-items: center; gap: 6px;
  box-shadow: 0 2px 6px rgba(0, 0, 0, 0.2);
}
.puzzle::before { content: ""; position: absolute; left: -1px; top: 50%; transform: translateY(-50%); width: 8px; height: 12px; background: inherit; border-radius: 0 4px 4px 0; }
.puzzle.ev { background: var(--lang-js); color: #0c1a30; }
.puzzle.cond { background: var(--lang-css); color: #042030; margin-left: 14px; }
.puzzle.act { background: var(--lang-html); color: #230800; margin-left: 28px; }
.puzzle b { font-weight: 700; }

/* ---- M3 Interactive Puzzle Block Workspace ---- */
.block-workspace {
  display: flex;
  flex-direction: column;
  gap: 12px;
}
.workspace-header {
  font-size: 13px;
  font-weight: 700;
  color: var(--sec-text);
  margin-bottom: 2px;
}
.block-picker-container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  background: var(--main-bg);
  border: 1px solid var(--iatv-btn-border);
  padding: 8px 12px;
  border-radius: var(--radius-sm);
  margin-bottom: 6px;
}
.block-picker-container label {
  font-size: 12.5px;
  font-weight: 700;
  color: var(--sec-text);
}
.sb-select-widget {
  background: var(--cardBg);
  color: var(--body-text);
  border: 1px solid var(--iatv-btn-border);
  padding: 4px 8px;
  border-radius: 6px;
  font-size: 12px;
  font-family: inherit;
  outline: none;
  cursor: pointer;
}

/* Blue CSS Style Block */
.m3-style-block {
  position: relative;
  background: #1d73e8; /* Rich Android / Material Blue */
  border-radius: 16px;
  padding: 12px 14px;
  box-shadow: 0 4px 14px rgba(0, 0, 0, 0.3);
  display: flex;
  flex-direction: column;
  gap: 8px;
  border: 1px solid rgba(255, 255, 255, 0.15);
}
.m3-style-block::before {
  content: "";
  position: absolute;
  top: -8px;
  left: 24px;
  width: 20px;
  height: 12px;
  background: #1d73e8;
  border-radius: 6px 6px 0 0;
  border: 1px solid rgba(255, 255, 255, 0.15);
  border-bottom: none;
}

.m3-block-header {
  display: flex;
  align-items: center;
  gap: 8px;
  color: #fff;
  font-family: 'JetBrains Mono', monospace;
  font-size: 13px;
  font-weight: 700;
}
.m3-caret {
  font-size: 10px;
}
.m3-block-title .brace {
  opacity: 0.8;
}

.m3-block-rows {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.m3-block-row {
  background: rgba(255, 255, 255, 0.15);
  border-radius: 8px;
  padding: 6px 12px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
}

.drag-handle {
  color: rgba(255, 255, 255, 0.6);
  font-size: 12px;
  cursor: grab;
}

.prop-name {
  font-family: 'JetBrains Mono', monospace;
  font-size: 12.5px;
  color: #fff;
  font-weight: 500;
  margin-right: auto;
}

/* Value controls styled as rounded pills */
.block-pill {
  background: #12151b;
  color: #fff;
  border: none;
  font-family: 'JetBrains Mono', monospace;
  font-size: 11.5px;
  font-weight: 600;
  padding: 3px 10px;
  border-radius: 100px;
  outline: none;
  cursor: pointer;
  text-align: center;
}

.pill-select {
  appearance: none;
  -webkit-appearance: none;
  padding-right: 18px;
  background-image: url("data:image/svg+xml;utf8,<svg xmlns='http://www.w3.org/2000/svg' width='8' height='8' fill='white'><path d='M0 2l4 4 4-4z'/></svg>");
  background-repeat: no-repeat;
  background-position: right 6px center;
}

.block-pill-group {
  display: inline-flex;
  align-items: center;
  background: #12151b;
  border-radius: 100px;
  padding-right: 8px;
}

.pill-input-num {
  background: transparent;
  color: #fff;
  border: none;
  width: 28px;
  text-align: center;
  font-family: inherit;
  font-size: 11.5px;
  outline: none;
  padding: 3px 0 3px 6px;
}

.pill-input-num::-webkit-outer-spin-button,
.pill-input-num::-webkit-inner-spin-button {
  -webkit-appearance: none;
  margin: 0;
}
.pill-input-num[type=number] {
  -moz-appearance: textfield;
}

.pill-unit {
  font-size: 10px;
  color: rgba(255, 255, 255, 0.5);
  font-weight: 700;
  text-transform: uppercase;
}

.pill-input-text {
  background: #12151b;
  color: #fff;
  border: none;
  border-radius: 100px;
  padding: 3px 10px;
  font-size: 11.5px;
  width: 90px;
  outline: none;
  font-family: inherit;
}

.static-pill {
  background: rgba(255, 255, 255, 0.2);
  cursor: default;
}

/* Yellow JS Logic Block */
.m3-logic-block {
  position: relative;
  background: #f4b400; /* Rich JS/Sketchware Yellow */
  border-radius: 16px;
  padding: 12px 14px;
  box-shadow: 0 4px 14px rgba(0, 0, 0, 0.3);
  display: flex;
  flex-direction: column;
  gap: 8px;
  border: 1px solid rgba(255, 255, 255, 0.15);
  margin-top: 10px;
  transition: opacity 0.3s ease, transform 0.3s ease;
}
.m3-logic-block::before {
  content: "";
  position: absolute;
  top: -8px;
  left: 24px;
  width: 20px;
  height: 12px;
  background: #f4b400;
  border-radius: 6px 6px 0 0;
  border: 1px solid rgba(255, 255, 255, 0.15);
  border-bottom: none;
}
.m3-logic-block .m3-block-row {
  background: rgba(0, 0, 0, 0.12);
}
.m3-logic-block .prop-name {
  color: #000;
}
.m3-logic-block .m3-block-header {
  color: #000;
}
.m3-logic-block .drag-handle {
  color: rgba(0, 0, 0, 0.5);
}

.m3-logic-block.disabled {
  opacity: 0.2;
  transform: scale(0.96) translateY(-5px);
  pointer-events: none;
}

/* ==========================================================================
   TOP NAV LINKS & ACTION BUTTONS
   ========================================================================== */
.top-nav-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 6px 14px;
  border-radius: var(--radius-full);
  background: var(--md-sys-color-surface-container-high);
  color: var(--md-sys-color-on-surface);
  border: 1px solid var(--md-sys-color-outline-variant);
  font-size: 13.5px;
  font-weight: 600;
  text-decoration: none;
  transition: all 0.2s ease;
}
.top-nav-link:hover {
  background: var(--md-sys-color-primary-container);
  color: var(--md-sys-color-on-primary-container);
  border-color: var(--md-sys-color-primary);
  transform: translateY(-1px);
}

.m3-button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 10px 22px;
  border-radius: var(--radius-full);
  font-size: 14px;
  font-weight: 600;
  cursor: pointer;
  border: none;
  text-decoration: none;
  transition: all 0.2s cubic-bezier(0.2, 0, 0, 1);
}
.m3-button.primary {
  background: var(--md-sys-color-primary);
  color: var(--md-sys-color-on-primary);
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.25);
}
.m3-button.primary:hover {
  filter: brightness(1.08);
  box-shadow: 0 4px 14px rgba(168, 199, 250, 0.3);
  transform: translateY(-1px);
}

/* ==========================================================================
   PRIVACY POLICY PAGE STYLING
   ========================================================================== */
.privacy-page {
  background: var(--md-sys-color-surface);
  color: var(--md-sys-color-on-surface);
  min-height: 100vh;
}

.privacy-container {
  max-width: 920px;
  margin: 0 auto;
  padding: 36px 20px 80px;
}

.privacy-hero {
  text-align: center;
  margin-bottom: 48px;
  padding: 32px 20px;
  background: linear-gradient(180deg, rgba(40, 71, 119, 0.22) 0%, rgba(17, 19, 24, 0) 100%);
  border-radius: var(--radius-xl);
  border: 1px solid rgba(168, 199, 250, 0.12);
}

.privacy-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 16px;
  border-radius: var(--radius-full);
  background: var(--md-sys-color-primary-container);
  color: var(--md-sys-color-on-primary-container);
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.3px;
  text-transform: uppercase;
  margin-bottom: 18px;
}

.privacy-hero h2 {
  font-size: clamp(1.8rem, 4vw, 2.5rem);
  line-height: 1.25;
  color: #fff;
  margin-bottom: 16px;
}

.privacy-hero .lede {
  max-width: 680px;
  margin: 0 auto 32px;
  font-size: 1.05rem;
  color: var(--md-sys-color-on-surface-variant);
  line-height: 1.65;
}

.privacy-highlights {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 14px;
  margin-top: 24px;
  text-align: left;
}

.highlight-pill {
  display: flex;
  align-items: center;
  gap: 14px;
  background: var(--md-sys-color-surface-container);
  border: 1px solid var(--md-sys-color-outline-variant);
  border-radius: var(--radius-md);
  padding: 14px 16px;
  transition: border-color 0.2s ease, transform 0.2s ease;
}
.highlight-pill:hover {
  border-color: var(--md-sys-color-primary);
  transform: translateY(-2px);
}
.highlight-pill i {
  font-size: 26px;
  color: var(--md-sys-color-primary);
  flex-shrink: 0;
}
.highlight-pill strong {
  display: block;
  font-size: 14px;
  color: #fff;
}
.highlight-pill span {
  display: block;
  font-size: 12px;
  color: var(--md-sys-color-on-surface-variant);
}

.policy-sections-grid {
  display: flex;
  flex-direction: column;
  gap: 24px;
}

.policy-card {
  background: var(--md-sys-color-surface-container);
  border: 1px solid var(--md-sys-color-outline-variant);
  border-radius: var(--radius-lg);
  padding: 28px;
  box-shadow: 0 4px 16px rgba(0, 0, 0, 0.2);
  transition: border-color 0.2s ease;
}
.policy-card:hover {
  border-color: rgba(168, 199, 250, 0.35);
}

.policy-card-header {
  display: flex;
  align-items: center;
  gap: 16px;
  margin-bottom: 18px;
}

.policy-icon-wrapper {
  width: 48px;
  height: 48px;
  border-radius: 14px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 24px;
  flex-shrink: 0;
}
.policy-icon-wrapper.lang-bridge { background: rgba(179, 157, 219, 0.15); color: #c9b2ff; }
.policy-icon-wrapper.lang-html { background: rgba(227, 76, 38, 0.15); color: #ff7b5c; }
.policy-icon-wrapper.lang-css { background: rgba(99, 179, 237, 0.15); color: #70b8ff; }
.policy-icon-wrapper.lang-js { background: rgba(241, 224, 90, 0.15); color: #ffd43f; }

.policy-step {
  font-size: 11px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.8px;
  color: var(--md-sys-color-primary);
  display: block;
  margin-bottom: 2px;
}

.policy-card-header h3 {
  font-size: 1.25rem;
  color: #fff;
  margin: 0;
}

.policy-card-body p {
  font-size: 0.96rem;
  line-height: 1.65;
  color: var(--md-sys-color-on-surface-variant);
  margin-bottom: 14px;
}

.policy-list {
  list-style: none;
  padding: 0;
  margin: 14px 0 0;
  display: flex;
  flex-direction: column;
  gap: 10px;
}
.policy-list li {
  position: relative;
  padding-left: 24px;
  font-size: 0.94rem;
  line-height: 1.55;
  color: var(--md-sys-color-on-surface-variant);
}
.policy-list li strong {
  color: var(--md-sys-color-on-surface);
}
.policy-list li::before {
  content: "•";
  position: absolute;
  left: 8px;
  top: 0;
  color: var(--md-sys-color-primary);
  font-size: 18px;
  line-height: 1.3;
}

.contact-box {
  background: var(--md-sys-color-surface-container-high);
  border: 1px solid var(--md-sys-color-outline-variant);
  border-radius: var(--radius-md);
  padding: 20px;
  margin-top: 18px;
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 12px;
}
.contact-box p {
  margin: 0;
}

/* ==========================================================================
   UNIFIED FOOTER
   ========================================================================== */
.app-footer {
  margin-top: 60px;
  padding-top: 36px;
  border-top: 1px solid var(--md-sys-color-outline-variant);
}

.footer-content {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  flex-wrap: wrap;
  gap: 24px;
  margin-bottom: 24px;
}

.footer-brand h4 {
  font-size: 1.2rem;
  color: #fff;
  margin-bottom: 4px;
}

.footer-brand p {
  font-size: 0.85rem;
  color: var(--md-sys-color-on-surface-variant);
  margin: 0;
}

.footer-links {
  display: flex;
  gap: 18px;
  flex-wrap: wrap;
}
.footer-links a {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 0.9rem;
  color: var(--md-sys-color-on-surface-variant);
  text-decoration: none;
  transition: color 0.2s ease;
}
.footer-links a:hover,
.footer-links a.active {
  color: var(--md-sys-color-primary);
}

.footer-bottom {
  text-align: center;
  font-size: 0.8rem;
  color: var(--md-sys-color-outline);
  padding-top: 16px;
  border-top: 1px solid rgba(255, 255, 255, 0.05);
}

@media (max-width: 600px) {
  .policy-card {
    padding: 20px 16px;
  }
  .footer-content {
    flex-direction: column;
  }
}