/* ==========================================================================
   Material Design 3 Expressive (MD3E) — Official Component Showcase Stylesheet
   Pure M3 Tonal Surface, 15-Step Typescale, Shape Morphology, and Spring Physics
   ========================================================================== */

*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
  -webkit-tap-highlight-color: transparent;
  -webkit-touch-callout: none;
}

html {
  scroll-behavior: smooth;
  scroll-padding-top: 88px;
  overflow-x: hidden;
  max-width: 100vw;
}

:root {
  --preview-bg: var(--md-sys-color-background, #141218);
  --preview-surface: var(--md-sys-color-surface-container, #211F26);
  --preview-surface-low: var(--md-sys-color-surface-container-low, #1D1B20);
  --preview-surface-high: var(--md-sys-color-surface-container-high, #2B2930);
  --preview-surface-highest: var(--md-sys-color-surface-container-highest, #36343B);
  --md-drawer-width: 300px;
}

[data-theme="light"] {
  --preview-bg: var(--md-sys-color-background, #FEF7FF);
  --preview-surface: var(--md-sys-color-surface-container, #F3EDF7);
  --preview-surface-low: var(--md-sys-color-surface-container-low, #F7F2FA);
  --preview-surface-high: var(--md-sys-color-surface-container-high, #ECE6F0);
  --preview-surface-highest: var(--md-sys-color-surface-container-highest, #E6E0E9);
}

body {
  background-color: var(--preview-bg);
  color: var(--md-sys-color-on-background, #E6E0E9);
  font-family: var(--md-sys-typescale-font-family, 'Roboto', 'Roboto Flex', system-ui, sans-serif);
  font-size: var(--md-sys-typescale-body-medium-size, 14px);
  line-height: var(--md-sys-typescale-body-medium-line-height, 20px);
  display: flex;
  min-height: 100vh;
  margin: 0;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-rendering: optimizeLegibility;
  transition: background-color 0.3s ease, color 0.3s ease;
  overflow-x: hidden;
  max-width: 100vw;
  width: 100%;
}

/* ---- Material Symbols Icon System ---- */
.material-symbols-rounded,
.material-symbols-outlined,
.mat-sym {
  font-family: 'Material Symbols Rounded', 'Material Symbols Outlined', sans-serif;
  font-weight: normal;
  font-style: normal;
  font-size: 24px;
  line-height: 1;
  letter-spacing: normal;
  text-transform: none;
  display: inline-block;
  white-space: nowrap;
  word-wrap: normal;
  direction: ltr;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-rendering: optimizeLegibility;
  font-feature-settings: "liga";
  font-variation-settings: 'FILL' 0, 'wght' 400, 'GRAD' 0, 'opsz' 24;
  vertical-align: middle;
  user-select: none;
  -webkit-user-select: none;
}

/* ==========================================================================
   1. TYPESCALE UTILITIES (MD3 EXPRESSIVE 26-STYLE SCALE)
   ========================================================================== */
.md-typescale-display-large, .md-display-large {
  font-family: var(--md-sys-typescale-display-large-font);
  font-size: var(--md-sys-typescale-display-large-size, 57px);
  font-weight: var(--md-sys-typescale-display-large-weight, 400);
  line-height: var(--md-sys-typescale-display-large-line-height, 64px);
  letter-spacing: var(--md-sys-typescale-display-large-tracking, -0.2px);
}
.md-typescale-display-medium, .md-display-medium {
  font-family: var(--md-sys-typescale-display-medium-font);
  font-size: var(--md-sys-typescale-display-medium-size, 45px);
  font-weight: var(--md-sys-typescale-display-medium-weight, 400);
  line-height: var(--md-sys-typescale-display-medium-line-height, 52px);
  letter-spacing: var(--md-sys-typescale-display-medium-tracking, 0px);
}
.md-typescale-display-small, .md-display-small {
  font-family: var(--md-sys-typescale-display-small-font);
  font-size: var(--md-sys-typescale-display-small-size, 36px);
  font-weight: var(--md-sys-typescale-display-small-weight, 400);
  line-height: var(--md-sys-typescale-display-small-line-height, 44px);
  letter-spacing: var(--md-sys-typescale-display-small-tracking, 0px);
}

.md-typescale-display-large-emphasized, .md-display-large-emphasized {
  font-family: var(--md-sys-typescale-display-large-emphasized-font);
  font-size: var(--md-sys-typescale-display-large-emphasized-size, 57px);
  font-weight: var(--md-sys-typescale-display-large-emphasized-weight, 500);
  line-height: var(--md-sys-typescale-display-large-emphasized-line-height, 64px);
  letter-spacing: var(--md-sys-typescale-display-large-emphasized-tracking, 0px);
}
.md-typescale-display-medium-emphasized, .md-display-medium-emphasized {
  font-family: var(--md-sys-typescale-display-medium-emphasized-font);
  font-size: var(--md-sys-typescale-display-medium-emphasized-size, 45px);
  font-weight: var(--md-sys-typescale-display-medium-emphasized-weight, 500);
  line-height: var(--md-sys-typescale-display-medium-emphasized-line-height, 52px);
  letter-spacing: var(--md-sys-typescale-display-medium-emphasized-tracking, 0px);
}
.md-typescale-display-small-emphasized, .md-display-small-emphasized {
  font-family: var(--md-sys-typescale-display-small-emphasized-font);
  font-size: var(--md-sys-typescale-display-small-emphasized-size, 36px);
  font-weight: var(--md-sys-typescale-display-small-emphasized-weight, 500);
  line-height: var(--md-sys-typescale-display-small-emphasized-line-height, 44px);
  letter-spacing: var(--md-sys-typescale-display-small-emphasized-tracking, 0px);
}

.md-typescale-headline-large, .md-headline-large {
  font-family: var(--md-sys-typescale-headline-large-font);
  font-size: var(--md-sys-typescale-headline-large-size, 32px);
  font-weight: var(--md-sys-typescale-headline-large-weight, 400);
  line-height: var(--md-sys-typescale-headline-large-line-height, 40px);
  letter-spacing: var(--md-sys-typescale-headline-large-tracking, 0px);
}
.md-typescale-headline-medium, .md-headline-medium {
  font-family: var(--md-sys-typescale-headline-medium-font);
  font-size: var(--md-sys-typescale-headline-medium-size, 28px);
  font-weight: var(--md-sys-typescale-headline-medium-weight, 400);
  line-height: var(--md-sys-typescale-headline-medium-line-height, 36px);
  letter-spacing: var(--md-sys-typescale-headline-medium-tracking, 0px);
}
.md-typescale-headline-small, .md-headline-small {
  font-family: var(--md-sys-typescale-headline-small-font);
  font-size: var(--md-sys-typescale-headline-small-size, 24px);
  font-weight: var(--md-sys-typescale-headline-small-weight, 400);
  line-height: var(--md-sys-typescale-headline-small-line-height, 32px);
  letter-spacing: var(--md-sys-typescale-headline-small-tracking, 0px);
}

.md-typescale-headline-large-emphasized, .md-headline-large-emphasized {
  font-family: var(--md-sys-typescale-headline-large-emphasized-font);
  font-size: var(--md-sys-typescale-headline-large-emphasized-size, 32px);
  font-weight: var(--md-sys-typescale-headline-large-emphasized-weight, 500);
  line-height: var(--md-sys-typescale-headline-large-emphasized-line-height, 40px);
  letter-spacing: var(--md-sys-typescale-headline-large-emphasized-tracking, 0px);
}
.md-typescale-headline-medium-emphasized, .md-headline-medium-emphasized {
  font-family: var(--md-sys-typescale-headline-medium-emphasized-font);
  font-size: var(--md-sys-typescale-headline-medium-emphasized-size, 28px);
  font-weight: var(--md-sys-typescale-headline-medium-emphasized-weight, 500);
  line-height: var(--md-sys-typescale-headline-medium-emphasized-line-height, 36px);
  letter-spacing: var(--md-sys-typescale-headline-medium-emphasized-tracking, 0px);
}
.md-typescale-headline-small-emphasized, .md-headline-small-emphasized {
  font-family: var(--md-sys-typescale-headline-small-emphasized-font);
  font-size: var(--md-sys-typescale-headline-small-emphasized-size, 24px);
  font-weight: var(--md-sys-typescale-headline-small-emphasized-weight, 500);
  line-height: var(--md-sys-typescale-headline-small-emphasized-line-height, 32px);
  letter-spacing: var(--md-sys-typescale-headline-small-emphasized-tracking, 0px);
}

.md-typescale-title-large, .md-title-large {
  font-family: var(--md-sys-typescale-title-large-font);
  font-size: var(--md-sys-typescale-title-large-size, 22px);
  font-weight: var(--md-sys-typescale-title-large-weight, 400);
  line-height: var(--md-sys-typescale-title-large-line-height, 28px);
  letter-spacing: var(--md-sys-typescale-title-large-tracking, 0px);
}
.md-typescale-title-medium, .md-title-medium {
  font-family: var(--md-sys-typescale-title-medium-font);
  font-size: var(--md-sys-typescale-title-medium-size, 16px);
  font-weight: var(--md-sys-typescale-title-medium-weight, 500);
  line-height: var(--md-sys-typescale-title-medium-line-height, 24px);
  letter-spacing: var(--md-sys-typescale-title-medium-tracking, 0.2px);
}
.md-typescale-title-small, .md-title-small {
  font-family: var(--md-sys-typescale-title-small-font);
  font-size: var(--md-sys-typescale-title-small-size, 14px);
  font-weight: var(--md-sys-typescale-title-small-weight, 500);
  line-height: var(--md-sys-typescale-title-small-line-height, 20px);
  letter-spacing: var(--md-sys-typescale-title-small-tracking, 0.1px);
}

.md-typescale-title-large-emphasized, .md-title-large-emphasized {
  font-family: var(--md-sys-typescale-title-large-emphasized-font);
  font-size: var(--md-sys-typescale-title-large-emphasized-size, 22px);
  font-weight: var(--md-sys-typescale-title-large-emphasized-weight, 500);
  line-height: var(--md-sys-typescale-title-large-emphasized-line-height, 28px);
  letter-spacing: var(--md-sys-typescale-title-large-emphasized-tracking, 0px);
}
.md-typescale-title-medium-emphasized, .md-title-medium-emphasized {
  font-family: var(--md-sys-typescale-title-medium-emphasized-font);
  font-size: var(--md-sys-typescale-title-medium-emphasized-size, 16px);
  font-weight: var(--md-sys-typescale-title-medium-emphasized-weight, 700);
  line-height: var(--md-sys-typescale-title-medium-emphasized-line-height, 24px);
  letter-spacing: var(--md-sys-typescale-title-medium-emphasized-tracking, 0.15px);
}
.md-typescale-title-small-emphasized, .md-title-small-emphasized {
  font-family: var(--md-sys-typescale-title-small-emphasized-font);
  font-size: var(--md-sys-typescale-title-small-emphasized-size, 14px);
  font-weight: var(--md-sys-typescale-title-small-emphasized-weight, 700);
  line-height: var(--md-sys-typescale-title-small-emphasized-line-height, 20px);
  letter-spacing: var(--md-sys-typescale-title-small-emphasized-tracking, 0.1px);
}

.md-typescale-body-large, .md-body-large {
  font-family: var(--md-sys-typescale-body-large-font);
  font-size: var(--md-sys-typescale-body-large-size, 16px);
  font-weight: var(--md-sys-typescale-body-large-weight, 400);
  line-height: var(--md-sys-typescale-body-large-line-height, 24px);
  letter-spacing: var(--md-sys-typescale-body-large-tracking, 0.5px);
}
.md-typescale-body-medium, .md-body-medium {
  font-family: var(--md-sys-typescale-body-medium-font);
  font-size: var(--md-sys-typescale-body-medium-size, 14px);
  font-weight: var(--md-sys-typescale-body-medium-weight, 400);
  line-height: var(--md-sys-typescale-body-medium-line-height, 20px);
  letter-spacing: var(--md-sys-typescale-body-medium-tracking, 0.2px);
}
.md-typescale-body-small, .md-body-small {
  font-family: var(--md-sys-typescale-body-small-font);
  font-size: var(--md-sys-typescale-body-small-size, 12px);
  font-weight: var(--md-sys-typescale-body-small-weight, 400);
  line-height: var(--md-sys-typescale-body-small-line-height, 16px);
  letter-spacing: var(--md-sys-typescale-body-small-tracking, 0.4px);
}

.md-typescale-body-large-emphasized, .md-body-large-emphasized {
  font-family: var(--md-sys-typescale-body-large-emphasized-font);
  font-size: var(--md-sys-typescale-body-large-emphasized-size, 16px);
  font-weight: var(--md-sys-typescale-body-large-emphasized-weight, 500);
  line-height: var(--md-sys-typescale-body-large-emphasized-line-height, 24px);
  letter-spacing: var(--md-sys-typescale-body-large-emphasized-tracking, 0.15px);
}
.md-typescale-body-medium-emphasized, .md-body-medium-emphasized {
  font-family: var(--md-sys-typescale-body-medium-emphasized-font);
  font-size: var(--md-sys-typescale-body-medium-emphasized-size, 14px);
  font-weight: var(--md-sys-typescale-body-medium-emphasized-weight, 500);
  line-height: var(--md-sys-typescale-body-medium-emphasized-line-height, 20px);
  letter-spacing: var(--md-sys-typescale-body-medium-emphasized-tracking, 0.25px);
}
.md-typescale-body-small-emphasized, .md-body-small-emphasized {
  font-family: var(--md-sys-typescale-body-small-emphasized-font);
  font-size: var(--md-sys-typescale-body-small-emphasized-size, 12px);
  font-weight: var(--md-sys-typescale-body-small-emphasized-weight, 500);
  line-height: var(--md-sys-typescale-body-small-emphasized-line-height, 16px);
  letter-spacing: var(--md-sys-typescale-body-small-emphasized-tracking, 0.4px);
}

.md-typescale-label-large, .md-label-large {
  font-family: var(--md-sys-typescale-label-large-font);
  font-size: var(--md-sys-typescale-label-large-size, 14px);
  font-weight: var(--md-sys-typescale-label-large-weight, 500);
  line-height: var(--md-sys-typescale-label-large-line-height, 20px);
  letter-spacing: var(--md-sys-typescale-label-large-tracking, 0.1px);
}
.md-typescale-label-medium, .md-label-medium {
  font-family: var(--md-sys-typescale-label-medium-font);
  font-size: var(--md-sys-typescale-label-medium-size, 12px);
  font-weight: var(--md-sys-typescale-label-medium-weight, 500);
  line-height: var(--md-sys-typescale-label-medium-line-height, 16px);
  letter-spacing: var(--md-sys-typescale-label-medium-tracking, 0.5px);
}
.md-typescale-label-small, .md-label-small {
  font-family: var(--md-sys-typescale-label-small-font);
  font-size: var(--md-sys-typescale-label-small-size, 11px);
  font-weight: var(--md-sys-typescale-label-small-weight, 500);
  line-height: var(--md-sys-typescale-label-small-line-height, 16px);
  letter-spacing: var(--md-sys-typescale-label-small-tracking, 0.5px);
}

.md-typescale-label-large-emphasized, .md-label-large-emphasized {
  font-family: var(--md-sys-typescale-label-large-emphasized-font);
  font-size: var(--md-sys-typescale-label-large-emphasized-size, 14px);
  font-weight: var(--md-sys-typescale-label-large-emphasized-weight, 700);
  line-height: var(--md-sys-typescale-label-large-emphasized-line-height, 20px);
  letter-spacing: var(--md-sys-typescale-label-large-emphasized-tracking, 0.1px);
}
.md-typescale-label-medium-emphasized, .md-label-medium-emphasized {
  font-family: var(--md-sys-typescale-label-medium-emphasized-font);
  font-size: var(--md-sys-typescale-label-medium-emphasized-size, 12px);
  font-weight: var(--md-sys-typescale-label-medium-emphasized-weight, 700);
  line-height: var(--md-sys-typescale-label-medium-emphasized-line-height, 16px);
  letter-spacing: var(--md-sys-typescale-label-medium-emphasized-tracking, 0.5px);
}
.md-typescale-label-small-emphasized, .md-label-small-emphasized {
  font-family: var(--md-sys-typescale-label-small-emphasized-font);
  font-size: var(--md-sys-typescale-label-small-emphasized-size, 11px);
  font-weight: var(--md-sys-typescale-label-small-emphasized-weight, 700);
  line-height: var(--md-sys-typescale-label-small-emphasized-line-height, 16px);
  letter-spacing: var(--md-sys-typescale-label-small-emphasized-tracking, 0.5px);
}

/* ==========================================================================
   2. NAVIGATION RAIL (LEFT 80px)
   ========================================================================== */
.app-nav-rail {
  position: fixed;
  top: 0;
  left: 0;
  bottom: 0;
  width: 80px;
  height: 100vh;
  background-color: var(--md-sys-color-surface-container-low, #1D1B20);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: space-between;
  padding: 24px 0;
  z-index: 80;
  box-sizing: border-box;
  user-select: none;
  -webkit-user-select: none;
}

.rail-top-group {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 16px;
  width: 100%;
}

.rail-brand-logo {
  width: 48px;
  height: 48px;
  border-radius: var(--md-sys-shape-corner-large, 16px);
  background-color: var(--md-sys-color-primary-container);
  color: var(--md-sys-color-on-primary-container);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 8px;
  user-select: none;
  -webkit-user-select: none;
}

.rail-nav-items {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
  width: 100%;
}

.rail-item {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 4px;
  background: transparent;
  border: none;
  color: var(--md-sys-color-on-surface-variant, #CAC4D0);
  cursor: pointer;
  width: 100%;
  padding: 4px 0;
  text-decoration: none;
  font-family: inherit;
  transition: color 0.2s;
  user-select: none;
  -webkit-user-select: none;
}

.rail-icon-wrapper {
  width: 56px;
  height: 32px;
  border-radius: var(--md-sys-shape-corner-full, 9999px);
  display: flex;
  align-items: center;
  justify-content: center;
  transition: background-color 0.25s var(--md-sys-motion-easing-expressive-spatial, ease), color 0.2s;
  user-select: none;
  -webkit-user-select: none;
}

.rail-item .mat-sym {
  font-size: 24px;
}

.rail-label {
  font-size: var(--md-sys-typescale-label-small-size, 11px);
  font-weight: var(--md-sys-typescale-label-small-weight, 500);
  letter-spacing: 0.1px;
}

.rail-item:hover .rail-icon-wrapper {
  background-color: var(--md-sys-color-surface-container-high, #2B2930);
  color: var(--md-sys-color-on-surface, #E6E0E9);
}

.rail-item.active {
  color: var(--md-sys-color-on-surface, #E6E0E9);
}

.rail-item.active .rail-icon-wrapper {
  background-color: var(--md-sys-color-primary-container, #4F378B);
  color: var(--md-sys-color-on-primary-container, #EADDFF);
}

.rail-bottom-group {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 12px;
}

.rail-bottom-btn {
  width: 40px;
  height: 40px;
  border-radius: var(--md-sys-shape-corner-full, 9999px);
  border: none;
  background-color: transparent;
  color: var(--md-sys-color-on-surface-variant, #CAC4D0);
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: background-color 0.2s, color 0.2s;
  user-select: none;
  -webkit-user-select: none;
}

.rail-bottom-btn:hover {
  background-color: var(--md-sys-color-surface-container-high, #2B2930);
  color: var(--md-sys-color-on-surface, #E6E0E9);
}

/* ==========================================================================
   3. NAVIGATION DRAWER & ACCORDIONS (M3 STANDARD)
   ========================================================================== */
.sub-nav-drawer {
  position: fixed;
  top: 0;
  left: 80px;
  bottom: 0;
  width: var(--md-drawer-width, 300px);
  height: 100vh;
  background-color: var(--md-sys-color-surface-container-low, #1D1B20);
  display: flex;
  flex-direction: column;
  padding: 20px 12px;
  z-index: 70;
  box-sizing: border-box;
  overflow-y: auto;
  border-right: 1px solid var(--md-sys-color-outline-variant, rgba(255, 255, 255, 0.08));
  box-shadow: 3px 0 16px rgba(0, 0, 0, 0.14), 1px 0 4px rgba(0, 0, 0, 0.06);
  transition: transform 0.25s cubic-bezier(0.05, 0.7, 0.1, 1.0), opacity 0.2s ease;
  user-select: none;
  -webkit-user-select: none;
}

[data-theme="light"] .sub-nav-drawer {
  background-color: var(--md-sys-color-surface-container-low, #F7F2FA);
  border-right: 1px solid var(--md-sys-color-outline-variant, rgba(0, 0, 0, 0.08));
  box-shadow: 3px 0 14px rgba(0, 0, 0, 0.07), 1px 0 3px rgba(0, 0, 0, 0.03);
}

/* Master Drawer Primary Navigation (Mobile & Tablet) */
.drawer-main-destinations {
  display: flex;
  flex-direction: column;
  gap: 4px;
  margin-bottom: 8px;
  width: 100%;
}

.drawer-dest-item {
  display: flex;
  align-items: center;
  gap: 12px;
  height: 48px;
  padding: 0 16px;
  border-radius: var(--md-sys-shape-corner-full, 24px);
  background: transparent;
  border: none;
  color: var(--md-sys-color-on-surface-variant);
  font-family: inherit;
  font-size: var(--md-sys-typescale-label-large-size, 14px);
  font-weight: 500;
  cursor: pointer;
  width: 100%;
  text-align: left;
  transition: background-color 0.2s, color 0.2s;
  box-sizing: border-box;
  user-select: none;
  -webkit-user-select: none;
}

.drawer-dest-item:hover {
  background-color: var(--md-sys-color-surface-container-high);
  color: var(--md-sys-color-on-surface);
}

.drawer-dest-item.active {
  background-color: var(--md-sys-color-secondary-container, #4A4458);
  color: var(--md-sys-color-on-secondary-container, #E8DEF8);
  font-weight: 600;
}

.drawer-dest-pill {
  width: 24px;
  height: 24px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.drawer-dest-label {
  flex: 1;
}

.drawer-divider {
  height: 1px;
  background-color: var(--md-sys-color-outline-variant, rgba(255, 255, 255, 0.12));
  margin: 8px 0 12px 0;
  width: 100%;
}

.drawer-section-title {
  color: var(--md-sys-color-on-surface-variant);
  font-size: var(--md-sys-typescale-title-small-size, 12px);
  font-weight: 600;
  padding: 6px 16px;
  letter-spacing: 0.5px;
  text-transform: uppercase;
}

@media (min-width: 840px) {
  .drawer-main-destinations,
  .drawer-divider {
    display: none;
  }

  body.drawer-collapsed .sub-nav-drawer {
    transform: translateX(-100%);
    opacity: 0;
    pointer-events: none;
  }
}

.sub-nav-overview-pill {
  display: flex;
  align-items: center;
  gap: 10px;
  height: 48px;
  min-height: 48px;
  padding: 0 16px;
  border-radius: var(--md-sys-shape-corner-full, 24px);
  color: var(--md-sys-color-on-surface-variant);
  text-decoration: none;
  font-size: var(--md-sys-typescale-label-large-size, 14.5px);
  font-weight: 600;
  margin-bottom: 12px;
  box-sizing: border-box;
  box-shadow: none !important;
  transition: background-color 0.2s, color 0.2s;
}

.sub-nav-overview-pill:hover {
  background-color: var(--md-sys-color-surface-container-high);
  color: var(--md-sys-color-on-surface);
  box-shadow: none !important;
}

.sub-nav-overview-pill.active {
  background-color: var(--md-sys-color-primary-container);
  color: var(--md-sys-color-on-primary-container);
  box-shadow: none !important;
}

.sub-nav-list {
  display: flex;
  flex-direction: column;
  gap: 2px;
  width: 100%;
}

.sub-nav-item {
  display: flex;
  align-items: center;
  height: 40px;
  padding: 0 16px;
  border-radius: var(--md-sys-shape-corner-full, 20px);
  color: var(--md-sys-color-on-surface-variant);
  text-decoration: none;
  font-size: var(--md-sys-typescale-body-medium-size, 13.5px);
  font-weight: 500;
  cursor: pointer;
  box-shadow: none !important;
  transition: background-color 0.2s, color 0.2s;
}

.sub-nav-item:hover {
  background-color: var(--md-sys-color-surface-container-high);
  color: var(--md-sys-color-on-surface);
  box-shadow: none !important;
}

.sub-nav-item.active {
  background-color: var(--md-sys-color-primary-container);
  color: var(--md-sys-color-on-primary-container);
  font-weight: 600;
  box-shadow: none !important;
}

/* Sub-Nav Accordions */
.sub-nav-accordion {
  display: flex;
  flex-direction: column;
  margin: 2px 0;
}

.sub-nav-accordion-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  height: 40px;
  padding: 0 16px;
  border-radius: var(--md-sys-shape-corner-full, 20px);
  background: transparent;
  border: none;
  color: var(--md-sys-color-on-surface);
  font-size: var(--md-sys-typescale-body-medium-size, 14px);
  font-weight: 600;
  font-family: inherit;
  cursor: pointer;
  box-shadow: none !important;
  transition: background-color 0.2s cubic-bezier(0.2, 0, 0, 1), color 0.2s cubic-bezier(0.2, 0, 0, 1);
}

.sub-nav-accordion-header:hover {
  background-color: var(--md-sys-color-surface-container-high);
  color: var(--md-sys-color-on-surface);
  box-shadow: none !important;
}

.sub-nav-accordion.open .sub-nav-accordion-header {
  font-weight: 600;
  color: var(--md-sys-color-primary);
  background-color: var(--md-sys-color-surface-container-low);
  box-shadow: none !important;
}

.sub-nav-accordion-header .chevron {
  font-size: 22px;
  color: var(--md-sys-color-on-surface-variant);
  transition: transform 0.2s cubic-bezier(0.2, 0, 0, 1);
  transform: rotate(0deg);
}

.sub-nav-accordion.open .sub-nav-accordion-header .chevron {
  transform: rotate(180deg);
  color: var(--md-sys-color-primary);
}

.sub-nav-accordion-content {
  display: none;
  flex-direction: column;
  margin-left: 18px;
  padding-left: 10px;
  border-left: 2px solid var(--md-sys-color-surface-container-highest, rgba(255, 255, 255, 0.12));
  gap: 2px;
  margin-top: 4px;
  margin-bottom: 6px;
}

.sub-nav-accordion.open .sub-nav-accordion-content {
  display: flex;
}

.sub-nav-subitem {
  position: relative;
  display: flex;
  align-items: center;
  gap: 8px;
  height: 36px;
  padding: 0 14px;
  border-radius: var(--md-sys-shape-corner-full, 18px);
  color: var(--md-sys-color-on-surface-variant);
  text-decoration: none;
  font-size: var(--md-sys-typescale-body-small-size, 13px);
  font-weight: 500;
  font-family: inherit;
  box-shadow: none !important;
  transition: background-color 0.2s cubic-bezier(0.2, 0, 0, 1), color 0.2s cubic-bezier(0.2, 0, 0, 1), transform 0.15s ease;
}

.sub-nav-subitem:hover {
  background-color: var(--md-sys-color-surface-container-high);
  color: var(--md-sys-color-on-surface);
  box-shadow: none !important;
}

.sub-nav-subitem.active {
  background-color: var(--md-sys-color-secondary-container);
  color: var(--md-sys-color-on-secondary-container);
  font-weight: 600;
  box-shadow: none !important;
}

.sub-nav-subitem::before {
  content: '';
  width: 5px;
  height: 5px;
  border-radius: 50%;
  background-color: var(--md-sys-color-outline-variant, rgba(255, 255, 255, 0.3));
  flex-shrink: 0;
  transition: background-color 0.2s, transform 0.2s;
}

.sub-nav-subitem:hover {
  background-color: var(--md-sys-color-surface-container-high);
  color: var(--md-sys-color-on-surface);
  transform: translateX(2px);
}

.sub-nav-subitem:hover::before {
  background-color: var(--md-sys-color-primary);
  transform: scale(1.3);
}

.sub-nav-subitem.active {
  background-color: var(--md-sys-color-secondary-container);
  color: var(--md-sys-color-on-secondary-container);
  font-weight: 600;
}

.sub-nav-subitem.active::before {
  background-color: var(--md-sys-color-on-secondary-container);
  transform: scale(1.4);
}

/* ==========================================================================
   4. MAIN CONTENT CONTAINER
   ========================================================================== */
.main {
  margin-left: calc(80px + var(--md-drawer-width, 300px));
  flex: 1;
  min-height: 100vh;
  display: flex;
  flex-direction: column;
  background-color: var(--preview-bg);
  transition: margin-left 0.35s var(--md-sys-motion-easing-expressive-spatial, cubic-bezier(0.2, 0, 0, 1));
  box-sizing: border-box;
  max-width: 100vw;
  width: 100%;
  min-width: 0;
  overflow-x: hidden;
}

body.drawer-collapsed .main {
  margin-left: 80px;
}

.tab-view {
  display: none;
  padding: 48px 48px 48px 48px;
  max-width: 1400px;
  margin: 0 auto;
  box-sizing: border-box;
  width: 100%;
  min-width: 0;
  overflow-x: hidden;
  flex: 1;
}

.tab-view.active {
  display: flex;
  flex-direction: column;
}


/* ==========================================================================
   5. HOME TAB (`#tab-view-home`)
   ========================================================================== */
.home-hero-container {
  display: grid;
  grid-template-columns: 1.2fr 1fr;
  gap: 32px;
  margin-bottom: 40px;
  align-items: stretch;
}

.home-hero-thesis {
  background-color: var(--md-sys-color-surface-container-low);
  border-radius: var(--md-sys-shape-corner-extra-large, 28px);
  padding: 40px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  box-shadow: none;
}

.home-hero-eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  color: var(--md-sys-color-primary);
  font-size: var(--md-sys-typescale-label-small-size, 11px);
  font-weight: 700;
  letter-spacing: 0.8px;
  text-transform: uppercase;
  margin-bottom: 12px;
}

.home-hero-title {
  color: var(--md-sys-color-on-surface);
  font-size: var(--md-sys-typescale-display-medium-size, 45px);
  font-weight: 700;
  letter-spacing: -0.8px;
  line-height: 1.15;
  margin-bottom: 16px;
}

.home-hero-desc {
  color: var(--md-sys-color-on-surface-variant);
  font-size: var(--md-sys-typescale-body-large-size, 16px);
  line-height: var(--md-sys-typescale-body-large-line-height, 24px);
  margin-bottom: 32px;
}

.home-actions-row {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
  align-items: center;
}

/* Live Showcase Card */
.home-live-card {
  position: relative;
  background-color: transparent !important;
  border-radius: var(--md-sys-shape-corner-extra-large, 28px);
  padding: 28px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  box-shadow: none;
}

.home-live-card::before {
  content: "";
  position: absolute;
  inset: 0;
  border-radius: inherit;
  background-color: var(--md-sys-color-surface-container);
  z-index: 4;
  pointer-events: none;
}

.home-live-header {
  position: relative;
  z-index: 30;
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 16px;
}

.home-live-title {
  color: var(--md-sys-color-on-surface);
  font-size: var(--md-sys-typescale-title-medium-size, 16px);
  font-weight: 600;
  display: flex;
  align-items: center;
  gap: 8px;
}

.hero-live-badge {
  background-color: var(--md-sys-color-primary-container);
  color: var(--md-sys-color-on-primary-container);
  padding: 4px 12px;
  border-radius: var(--md-sys-shape-corner-full, 9999px);
  font-size: var(--md-sys-typescale-label-small-size, 11px);
  font-weight: 600;
}

.home-live-body {
  position: relative;
  z-index: 30;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.live-showcase-cell {
  position: relative;
  z-index: 30;
  background-color: var(--md-sys-color-surface-container-low);
  border-radius: var(--md-sys-shape-corner-large, 16px);
  padding: 14px 18px;
  display: flex;
  flex-direction: column;
  gap: 8px;
  box-shadow: none;
}


.live-cell-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.live-cell-title {
  display: flex;
  align-items: center;
  gap: 8px;
  color: var(--md-sys-color-on-surface);
  font-size: var(--md-sys-typescale-label-large-size, 13px);
  font-weight: 600;
}

.live-cell-icon {
  font-size: 18px;
  color: var(--md-sys-color-primary);
}

.live-cell-badge {
  background-color: var(--md-sys-color-surface-container-highest);
  color: var(--md-sys-color-on-surface);
  padding: 2px 8px;
  border-radius: var(--md-sys-shape-corner-full, 9999px);
  font-family: inherit;
  font-size: 11px;
  font-weight: 600;
}

.live-cell-content {
  width: 100%;
}

.live-showcase-grid-row {
  position: relative;
  z-index: 30;
  display: flex;
  gap: 12px;
  align-items: stretch;
}

.live-showcase-grid-row:has(md-fab-menu[open]),
.live-showcase-cell:has(md-fab-menu[open]),
.comp-card:has(md-fab-menu[open]),
.comp-preview:has(md-fab-menu[open]) {
  z-index: 100 !important;
}

md-fab-menu[open] {
  position: relative;
  z-index: 1000 !important;
}

.live-buttons-cluster {
  display: flex;
  align-items: center;
  gap: 8px;
  flex-wrap: wrap;
  position: relative;
  z-index: 35;
}

/* Experiment Band */
.home-exp-band {
  background-color: var(--md-sys-color-surface-container-low);
  border-radius: var(--md-sys-shape-corner-large, 16px);
  padding: 16px 24px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 16px;
  margin-bottom: 48px;
  box-shadow: none;
}

.home-exp-label {
  display: flex;
  align-items: center;
  gap: 8px;
  color: var(--md-sys-color-on-surface);
  font-size: var(--md-sys-typescale-title-small-size, 14px);
  font-weight: 600;
}

.home-exp-controls {
  display: flex;
  align-items: center;
  gap: 12px;
  flex-wrap: wrap;
}

.quick-color-dot {
  width: 28px;
  height: 28px;
  border-radius: var(--md-sys-shape-corner-full, 9999px);
  border: 2px solid transparent;
  cursor: pointer;
  transition: transform 0.2s, border-color 0.2s;
}

.quick-color-dot:hover {
  transform: scale(1.15);
}

.quick-color-dot.active {
  border-color: var(--md-sys-color-on-surface);
}

.section-header {
  margin-top: 56px;
  margin-bottom: 24px;
  scroll-margin-top: 88px;
}

.home-why-header-card {
  background-color: var(--md-sys-color-surface-container-low);
  border-radius: var(--md-sys-shape-corner-large, 16px);
  padding: 20px 24px;
  margin-top: 48px;
  margin-bottom: 24px;
  box-shadow: none;
  position: relative;
  z-index: 30;
}

.home-why-header-card .section-title {
  margin-top: 0;
  margin-bottom: 6px;
}

.section-title {
  color: var(--md-sys-color-on-surface);
  font-size: var(--md-sys-typescale-headline-medium-size, 28px);
  font-weight: 700;
  letter-spacing: -0.3px;
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 8px;
}

.section-desc {
  color: var(--md-sys-color-on-surface-variant);
  font-size: var(--md-sys-typescale-body-medium-size, 14.5px);
  line-height: 22px;
  margin-bottom: 0;
}

/* 4-Grid Value Pillars */
.pillars-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
  margin-top: 24px;
  margin-bottom: 56px;
}

.pillar-card {
  background-color: var(--md-sys-color-surface-container-low);
  border-radius: var(--md-sys-shape-corner-large, 16px);
  padding: 24px;
  display: flex;
  flex-direction: column;
  gap: 14px;
  box-shadow: none;
  transition: transform 0.2s ease, background-color 0.2s ease;
}

.pillar-card:hover {
  box-shadow: none;
}

.pillar-icon-box {
  width: 48px;
  height: 48px;
  border-radius: var(--md-sys-shape-corner-medium, 12px);
  background-color: var(--md-sys-color-primary-container);
  color: var(--md-sys-color-on-primary-container);
  display: flex;
  align-items: center;
  justify-content: center;
}

.pillar-title {
  color: var(--md-sys-color-on-surface);
  font-size: var(--md-sys-typescale-title-medium-size, 16px);
  font-weight: 600;
}

.pillar-desc {
  color: var(--md-sys-color-on-surface-variant);
  font-size: var(--md-sys-typescale-body-small-size, 13px);
  line-height: 20px;
}

/* Next Steps Card */
.next-steps-card {
  background-color: var(--md-sys-color-surface-container-low);
  border-radius: var(--md-sys-shape-corner-extra-large, 28px);
  padding: 36px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 20px;
  margin-bottom: 48px;
  box-shadow: none;
}

.next-steps-card h3 {
  font-weight: 700;
  color: var(--md-sys-color-on-surface);
}

.disclaimer-card {
  background-color: var(--md-sys-color-surface-container-low);
  border-radius: var(--md-sys-shape-corner-large, 16px);
  padding: 20px 24px;
  display: flex;
  gap: 16px;
  align-items: center;
  margin-bottom: 48px;
  box-shadow: none;
}

.disclaimer-icon {
  color: var(--md-sys-color-primary);
  font-size: 24px;
}

.disclaimer-text {
  color: var(--md-sys-color-on-surface-variant);
  font-size: var(--md-sys-typescale-body-small-size, 12px);
  line-height: 18px;
}

/* ==========================================================================
   6. GET STARTED TAB (`#tab-view-get-started`)
   ========================================================================== */
.docs-wrapper {
  width: 100%;
  max-width: 1040px;
  min-width: 0;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 40px;
  box-sizing: border-box;
}

.docs-hero-card {
  padding: 32px 36px;
  border-radius: var(--md-sys-shape-corner-extra-large, 28px);
  width: 100%;
  max-width: 100%;
  min-width: 0;
  box-sizing: border-box;
}

.docs-hero-h1 {
  margin: 0;
  font-size: 32px;
  font-weight: 700;
  letter-spacing: -0.5px;
  line-height: 1.2;
  word-break: break-word;
}

.docs-hero-header {
  background: linear-gradient(145deg, var(--md-sys-color-surface-container-low), var(--md-sys-color-surface-container));
  border: 1px solid var(--md-sys-color-outline-variant, rgba(255,255,255,0.08));
  border-radius: var(--md-sys-shape-corner-extra-large, 28px);
  padding: 32px 36px;
  display: flex;
  flex-direction: column;
  gap: 16px;
  box-shadow: none;
}

.docs-hero-title {
  color: var(--md-sys-color-on-surface);
  font-size: 30px;
  font-weight: 700;
  line-height: 38px;
  display: flex;
  align-items: center;
  gap: 12px;
}

.docs-hero-desc {
  color: var(--md-sys-color-on-surface-variant);
  font-size: 15px;
  line-height: 24px;
  max-width: 820px;
}

.docs-pills-row {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 4px;
}

.docs-pill {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 6px 14px;
  background-color: var(--md-sys-color-surface-container-highest);
  color: var(--md-sys-color-on-surface);
  border-radius: var(--md-sys-shape-corner-full, 9999px);
  font-size: 12.5px;
  font-weight: 500;
  letter-spacing: 0.1px;
}

.docs-pill .mat-sym {
  color: var(--md-sys-color-primary);
  font-size: 16px;
}

.install-grid {
  display: flex;
  flex-direction: column;
  gap: 20px;
  width: 100%;
}

.install-grid > md-card {
  min-width: 0;
  width: 100%;
  box-sizing: border-box;
}

.install-option-card {
  min-width: 0;
  max-width: 100%;
  background-color: var(--md-sys-color-surface-container-low);
  border: 1px solid var(--md-sys-color-outline-variant, rgba(255,255,255,0.08));
  border-radius: var(--md-sys-shape-corner-large, 16px);
  padding: 22px 24px;
  display: flex;
  flex-direction: column;
  gap: 14px;
  box-shadow: none;
}

.install-card-title {
  font-size: 15.5px;
  font-weight: 600;
  color: var(--md-sys-color-on-surface);
  display: flex;
  align-items: center;
  gap: 8px;
}

.install-card-desc {
  color: var(--md-sys-color-on-surface-variant);
  font-size: 13px;
  line-height: 19px;
  min-height: 38px;
}

.docs-section {
  display: flex;
  flex-direction: column;
  gap: 18px;
  scroll-margin-top: 88px;
}

.docs-section-header {
  margin-bottom: 4px;
}

.docs-section-title {
  color: var(--md-sys-color-on-surface);
  font-size: 32px;
  font-weight: 700;
  letter-spacing: -0.4px;
  line-height: 1.2;
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 6px;
}

.docs-section-subtitle {
  color: var(--md-sys-color-on-surface-variant);
  font-size: var(--md-sys-typescale-body-medium-size, 14px);
  line-height: 20px;
}

.docs-paragraph {
  color: var(--md-sys-color-on-surface-variant);
  font-size: var(--md-sys-typescale-body-large-size, 15px);
  line-height: 24px;
}

/* ==========================================================================
   CODE BLOCKS & SYNTAX (AUTHENTIC MATERIAL DESIGN 3 EXPRESSIVE DESIGN)
   ========================================================================== */
.code-block-wrapper {
  background-color: var(--md-sys-color-surface-container);
  border: 1px solid var(--md-sys-color-outline-variant);
  border-radius: var(--md-sys-shape-corner-large, 16px);
  overflow: hidden;
  box-shadow: none;
  min-width: 0;
  max-width: 100%;
  width: 100%;
  box-sizing: border-box;
  margin: 16px 0;
  transition: border-color 0.2s ease;
}

.code-block-wrapper:hover {
  border-color: var(--md-sys-color-outline);
  box-shadow: none;
}

.code-header {
  background-color: var(--md-sys-color-surface-container-high);
  border-bottom: 1px solid var(--md-sys-color-outline-variant);
  padding: 8px 16px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 12px;
  min-height: 48px;
  box-sizing: border-box;
}

.code-lang-label {
  color: var(--md-sys-color-on-surface);
  font: var(--md-sys-typescale-label-medium, 500 12px/16px 'Roboto Flex', sans-serif);
  letter-spacing: 0.5px;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background-color: var(--md-sys-color-surface-container-highest);
  border: 1px solid var(--md-sys-color-outline-variant);
  border-radius: var(--md-sys-shape-corner-small, 8px);
  padding: 4px 10px;
}

.code-lang-label .mat-sym {
  font-size: 16px;
  color: var(--md-sys-color-primary);
}

.copy-code-btn {
  background-color: var(--md-sys-color-surface-container-highest);
  border: 1px solid transparent;
  color: var(--md-sys-color-primary);
  font: var(--md-sys-typescale-label-medium, 500 12px/16px 'Roboto Flex', sans-serif);
  display: inline-flex;
  align-items: center;
  gap: 6px;
  cursor: pointer;
  padding: 6px 14px;
  border-radius: var(--md-sys-shape-corner-full, 9999px);
  transition: all 0.2s cubic-bezier(0.2, 0, 0, 1);
  user-select: none;
}

.copy-code-btn:hover {
  background-color: var(--md-sys-color-primary-container);
  color: var(--md-sys-color-on-primary-container);
  transform: translateY(-1px);
}

.copy-code-btn:active {
  transform: scale(0.96);
}

.copy-code-btn.copied {
  background-color: var(--md-sys-color-primary);
  color: var(--md-sys-color-on-primary);
}

.code-block-wrapper pre {
  background-color: var(--md-sys-color-surface-container-lowest, #0f0d13);
  padding: 20px 22px;
  margin: 0;
  overflow-x: auto;
  min-width: 0;
  max-width: 100%;
  box-sizing: border-box;
  font-family: 'Roboto Mono', Consolas, Monaco, monospace;
  font-size: 13.5px;
  line-height: 22px;
  letter-spacing: -0.1px;
  color: var(--md-sys-color-on-surface);
  scrollbar-width: thin;
  scrollbar-color: var(--md-sys-color-outline-variant) transparent;
}

.code-block-wrapper pre::-webkit-scrollbar {
  height: 6px;
  width: 6px;
}

.code-block-wrapper pre::-webkit-scrollbar-track {
  background: transparent;
}

.code-block-wrapper pre::-webkit-scrollbar-thumb {
  background-color: var(--md-sys-color-outline-variant);
  border-radius: 9999px;
}

/* ---- Syntax Highlighting Tokens (Material Design 3 HCT Tonal Harmony) ---- */
.code-block-wrapper pre code {
  font-family: 'Roboto Mono', 'Fira Code', Consolas, Monaco, monospace;
}

/* Comments: Muted outline token */
.syn-comment { color: var(--md-sys-color-outline, #938f99); font-style: italic; opacity: 0.85; }

/* Keywords: M3 Tertiary tonal color */
.syn-keyword { color: var(--md-sys-color-tertiary, #efb8c8); font-weight: 600; }

/* Strings: Harmonized Leaf / M3 Green */
.syn-string  { color: #a8dab5; }

/* Tags: M3 Primary token */
.syn-tag     { color: var(--md-sys-color-primary, #d0bcff); font-weight: 600; }

/* Attributes: M3 Secondary token */
.syn-attr    { color: var(--md-sys-color-secondary, #ccc2dc); font-weight: 500; }

/* Functions & Helpers: M3 Accent Cyan/Blue */
.syn-func    { color: #a8c7fa; font-weight: 500; }

/* Numbers & Booleans: M3 Error/Coral token */
.syn-num     { color: var(--md-sys-color-error, #f2b8b5); font-weight: 500; }

/* Command CLI: M3 Primary Bold */
.syn-cmd     { color: var(--md-sys-color-primary, #d0bcff); font-weight: 600; }

/* Packages & Modules: M3 Tertiary Container */
.syn-pkg     { color: var(--md-sys-color-tertiary, #efb8c8); }

/* Punctuation & Braces: On Surface Variant */
.syn-punc    { color: var(--md-sys-color-on-surface-variant, #cac4d0); }

/* ---- Light Theme Tonal Mapping ---- */
[data-theme="light"] .code-block-wrapper pre {
  background-color: var(--md-sys-color-surface-container-lowest, #fbf8ff);
}
[data-theme="light"] .syn-comment { color: var(--md-sys-color-outline, #79747e); opacity: 0.9; }
[data-theme="light"] .syn-keyword { color: var(--md-sys-color-tertiary, #7d5260); font-weight: 600; }
[data-theme="light"] .syn-string  { color: #2e6930; }
[data-theme="light"] .syn-tag     { color: var(--md-sys-color-primary, #6750a4); font-weight: 600; }
[data-theme="light"] .syn-attr    { color: var(--md-sys-color-secondary, #625b71); font-weight: 500; }
[data-theme="light"] .syn-func    { color: #0b57d0; font-weight: 500; }
[data-theme="light"] .syn-num     { color: var(--md-sys-color-error, #b3261e); }
[data-theme="light"] .syn-cmd     { color: var(--md-sys-color-primary, #6750a4); font-weight: 600; }
[data-theme="light"] .syn-pkg     { color: var(--md-sys-color-tertiary, #7d5260); }
[data-theme="light"] .syn-punc    { color: var(--md-sys-color-on-surface-variant, #49454f); }

/* Framework Code Switcher Tabs */
.framework-tabs-container {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.framework-tab-buttons {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
}

.framework-tab-btn {
  background-color: var(--md-sys-color-surface-container-low);
  border: none;
  color: var(--md-sys-color-on-surface-variant);
  padding: 8px 16px;
  border-radius: var(--md-sys-shape-corner-full, 9999px);
  font-size: var(--md-sys-typescale-label-large-size, 14px);
  font-weight: 500;
  cursor: pointer;
  transition: background-color 0.2s, color 0.2s;
}

.framework-tab-btn:hover {
  background-color: var(--md-sys-color-surface-container-high);
  color: var(--md-sys-color-on-surface);
}

.framework-tab-btn.active {
  background-color: var(--md-sys-color-primary-container);
  color: var(--md-sys-color-on-primary-container);
  font-weight: 600;
}

.framework-tab-panel {
  display: none;
}

.framework-tab-panel.active {
  display: flex;
  flex-direction: column;
  gap: 12px;
  animation: fadeInView 0.25s ease forwards;
}

.framework-tab-panel .code-block-wrapper {
  min-height: 490px;
  display: flex;
  flex-direction: column;
}

.framework-tab-panel .code-block-wrapper pre {
  flex: 1;
  box-sizing: border-box;
}

/* Tables & Callouts */
.docs-table-wrapper {
  background-color: var(--md-sys-color-surface-container-low);
  border-radius: var(--md-sys-shape-corner-large, 16px);
  padding: 20px;
  overflow-x: auto;
  box-shadow: none;
}

.docs-table {
  width: 100%;
  border-collapse: collapse;
  text-align: left;
}

.docs-table th {
  padding: 12px 16px;
  color: var(--md-sys-color-primary);
  font-size: var(--md-sys-typescale-label-large-size, 14px);
  border-bottom: 1px solid var(--md-sys-color-outline-variant);
}

.docs-table td {
  padding: 14px 16px;
  border-bottom: 1px solid var(--md-sys-color-outline-variant);
  color: var(--md-sys-color-on-surface);
  font-size: var(--md-sys-typescale-body-medium-size, 14px);
}

.docs-callout {
  background-color: var(--md-sys-color-surface-container-low);
  border-radius: var(--md-sys-shape-corner-large, 16px);
  padding: 20px 24px;
  display: flex;
  gap: 16px;
  align-items: center;
  box-shadow: none;
}

.docs-callout span {
  color: var(--md-sys-color-primary);
  font-size: 28px;
}

.docs-callout-text {
  color: var(--md-sys-color-on-surface-variant);
  font-size: var(--md-sys-typescale-body-medium-size, 14px);
  line-height: 22px;
}

.typescale-preview-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 14px;
}

@media (max-width: 1024px) {
  .typescale-preview-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (max-width: 560px) {
  .typescale-preview-grid {
    grid-template-columns: 1fr;
  }
}

.typescale-preview-card {
  padding: 16px;
  background-color: var(--md-sys-color-surface-container-low);
  border-radius: var(--md-sys-shape-corner-medium, 12px);
  border: 1px solid var(--md-sys-color-outline-variant, rgba(255, 255, 255, 0.12));
  display: flex;
  flex-direction: column;
  gap: 6px;
}

/* ==========================================================================
   7. COMPONENTS CATALOG (FULL RICH SECTIONS)
   ========================================================================== */
.components-hero-banner,
.hero-split-grid {
  display: block;
  background-color: var(--md-sys-color-surface-container-low);
  border-radius: var(--md-sys-shape-corner-extra-large, 28px);
  padding: 36px 32px;
  margin-bottom: 48px;
  box-shadow: none;
  max-width: 100%;
  min-width: 0;
  box-sizing: border-box;
  overflow: hidden;
}

.components-hero-icon-box {
  width: 52px;
  height: 52px;
  border-radius: var(--md-sys-shape-corner-medium, 12px);
  background-color: var(--md-sys-color-primary-container);
  color: var(--md-sys-color-on-primary-container);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.components-hero-banner h1,
.hero-text-card h1 {
  font-size: var(--md-sys-typescale-display-small-size, 36px);
  font-weight: 700;
  color: var(--md-sys-color-on-surface);
  margin-bottom: 0;
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 8px;
  max-width: 100%;
  word-break: break-word;
}

.components-hero-desc,
.hero-text-card p {
  color: var(--md-sys-color-on-surface-variant);
  font-size: var(--md-sys-typescale-body-medium-size, 14.5px);
  line-height: 23px;
  max-width: 760px;
  margin: 12px 0 20px 0;
  word-break: break-word;
}

.hero-meta-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background-color: var(--md-sys-color-surface-container-high);
  color: var(--md-sys-color-on-surface-variant);
  padding: 6px 14px;
  border-radius: var(--md-sys-shape-corner-full, 9999px);
  font-size: var(--md-sys-typescale-label-small-size, 12px);
  font-weight: 500;
  max-width: 100%;
  box-sizing: border-box;
}

.hero-meta-badge .mat-sym {
  color: var(--md-sys-color-primary);
}

.category-section {
  margin-bottom: 72px;
  scroll-margin-top: 88px;
  max-width: 100%;
  min-width: 0;
  box-sizing: border-box;
}

.category-header {
  margin-bottom: 24px;
  scroll-margin-top: 88px;
  max-width: 100%;
  min-width: 0;
}

.category-title {
  color: var(--md-sys-color-on-surface);
  font-size: var(--md-sys-typescale-headline-medium-size, 28px);
  font-weight: 700;
  letter-spacing: -0.4px;
  line-height: 1.25;
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 8px;
  margin: 0 0 8px 0;
  max-width: 100%;
  word-break: break-word;
}

/* Material 3 Copy Link Anchor Button (Inline with Title) */
.copy-anchor-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  position: static;
  width: 32px;
  height: 32px;
  border-radius: 50%;
  border: none;
  background-color: var(--md-sys-color-surface-container-high, #2B2930);
  color: var(--md-sys-color-on-surface-variant);
  cursor: pointer;
  padding: 0;
  opacity: 0.75;
  transition: opacity 200ms ease, background-color 200ms ease, transform 150ms ease;
  user-select: none;
  -webkit-user-select: none;
  flex-shrink: 0;
  outline: none;
}

.copy-anchor-btn:hover,
.copy-anchor-btn:focus-visible,
.copy-anchor-btn.copied {
  opacity: 1;
  background-color: var(--md-sys-color-surface-container-highest, #36343B);
  color: var(--md-sys-color-on-surface);
  transform: scale(1.05);
}

.copy-anchor-btn:active {
  transform: scale(0.92);
}

.copy-anchor-btn .mat-sym {
  font-size: 18px;
  line-height: 1;
}

.copy-anchor-tooltip {
  display: none;
}

.category-desc {
  color: var(--md-sys-color-on-surface-variant);
  font-size: var(--md-sys-typescale-body-medium-size, 14.5px);
  line-height: 22px;
  max-width: 100%;
  word-break: break-word;
}

.cards-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(min(100%, 340px), 1fr));
  gap: 24px;
  width: 100%;
  max-width: 100%;
  min-width: 0;
  box-sizing: border-box;
}

.cards-grid.full-width {
  grid-template-columns: 1fr;
}

.comp-card.full-width,
.comp-card.full-col {
  grid-column: 1 / -1;
}

.comp-card {
  background-color: var(--md-sys-color-surface-container-low);
  border-radius: var(--md-sys-shape-corner-large, 16px);
  padding: 24px;
  display: flex;
  flex-direction: column;
  gap: 16px;
  box-shadow: none;
  transition: box-shadow 0.2s ease;
  scroll-margin-top: 88px;
  width: 100%;
  max-width: 100%;
  min-width: 0;
  box-sizing: border-box;
  overflow: visible;
  position: relative;
}

.comp-card:hover {
  box-shadow: none;
}

.comp-preview {
  background-color: var(--md-sys-color-surface-container-high);
  border-radius: var(--md-sys-shape-corner-medium, 12px);
  padding: 24px 16px;
  min-height: 120px;
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  align-items: center;
  justify-content: center;
  width: 100%;
  max-width: 100%;
  min-width: 0;
  box-sizing: border-box;
  overflow: hidden;
  position: relative;
  user-select: none;
  -webkit-user-select: none;
}

.comp-preview > * {
  max-width: 100%;
  box-sizing: border-box;
}

.comp-preview:has(md-menu[open]),
.comp-preview:has(md-split-button[open]),
.comp-preview:has(md-fab-menu[open]),
.comp-card:has(md-menu[open]),
.comp-card:has(md-split-button[open]),
.comp-card:has(md-fab-menu[open]) {
  overflow: visible !important;
  z-index: 100;
}

.comp-preview:has(md-date-picker[inline]),
.comp-preview:has(md-time-picker[inline]) {
  padding: 16px 8px;
  height: auto;
  align-items: flex-start;
}

.comp-preview md-date-picker,
.comp-preview md-time-picker {
  max-width: 100%;
  display: flex;
  justify-content: center;
}

.comp-preview md-bottom-app-bar {
  width: 100%;
  max-width: 100%;
}

.comp-info {
  display: flex;
  flex-direction: column;
  gap: 6px;
  width: 100%;
  min-width: 0;
}

.comp-name {
  color: var(--md-sys-color-on-surface);
  font-size: var(--md-sys-typescale-title-medium-size, 16px);
  font-weight: 600;
}

.comp-desc {
  color: var(--md-sys-color-on-surface-variant);
  font-size: var(--md-sys-typescale-body-small-size, 13px);
  line-height: 18px;
  word-break: break-word;
}

/* Card Code Snippet Bar (Full-Width Bottom Experimental Code Block) */
.comp-code-box {
  margin-top: auto;
  background-color: var(--md-sys-color-surface-container-lowest, #0f0d13);
  border: 1px solid var(--md-sys-color-outline-variant, rgba(255, 255, 255, 0.08));
  border-radius: var(--md-sys-shape-corner-medium, 12px);
  padding: 8px 10px 8px 14px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  width: 100%;
  max-width: 100%;
  min-width: 0;
  box-sizing: border-box;
  overflow: hidden;
  transition: border-color 0.2s cubic-bezier(0.2, 0, 0, 1), box-shadow 0.2s cubic-bezier(0.2, 0, 0, 1), background-color 0.2s ease;
  box-shadow: none;
}

.comp-code-box:hover {
  border-color: var(--md-sys-color-outline);
  box-shadow: none;
}

[data-theme="light"] .comp-code-box {
  background-color: var(--md-sys-color-surface-container-lowest, #fbf8ff);
  border-color: var(--md-sys-color-outline-variant);
}

.comp-code-box code {
  font-family: 'Roboto Mono', 'Fira Code', Consolas, Monaco, monospace;
  font-size: 11.5px;
  line-height: 18px;
  letter-spacing: -0.1px;
  color: var(--md-sys-color-on-surface);
  font-weight: 500;
  white-space: nowrap;
  overflow-x: auto;
  overflow-y: hidden;
  flex: 1;
  min-width: 0;
  max-width: 100%;
  scrollbar-width: thin;
  scrollbar-color: var(--md-sys-color-outline-variant) transparent;
  -webkit-overflow-scrolling: touch;
}

.comp-code-box code::-webkit-scrollbar {
  height: 3px;
}

.comp-code-box code::-webkit-scrollbar-track {
  background: transparent;
}

.comp-code-box code::-webkit-scrollbar-thumb {
  background-color: var(--md-sys-color-outline-variant);
  border-radius: 9999px;
}

.comp-code-copy-btn {
  background-color: var(--md-sys-color-surface-container-highest);
  border: 1px solid transparent;
  color: var(--md-sys-color-primary);
  cursor: pointer;
  padding: 6px 10px;
  border-radius: var(--md-sys-shape-corner-full, 9999px);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  font: var(--md-sys-typescale-label-small, 500 11px/14px 'Roboto Flex', sans-serif);
  gap: 4px;
  transition: all 0.2s cubic-bezier(0.2, 0, 0, 1);
  user-select: none;
  min-width: 32px;
  height: 30px;
  box-sizing: border-box;
}

.comp-code-copy-btn .mat-sym {
  font-size: 16px !important;
  line-height: 1;
  color: inherit;
}

.comp-code-copy-btn:hover {
  background-color: var(--md-sys-color-primary-container);
  color: var(--md-sys-color-on-primary-container);
  transform: translateY(-1px);
}

.comp-code-copy-btn:active {
  transform: scale(0.92);
}

.comp-code-copy-btn.copied {
  background-color: var(--md-sys-color-primary) !important;
  color: var(--md-sys-color-on-primary, #ffffff) !important;
}

.comp-code-copy-btn.copied .mat-sym {
  color: var(--md-sys-color-on-primary, #ffffff) !important;
}

/* Standalone Next Steps Quick Install Banner Snippet Box */
.install-snippet-box {
  background-color: var(--md-sys-color-surface-container-lowest, #0f0d13);
  border: 1px solid var(--md-sys-color-outline-variant);
  border-radius: var(--md-sys-shape-corner-full, 9999px);
  padding: 4px 6px 4px 14px;
  display: inline-flex;
  align-items: center;
  gap: 10px;
  transition: border-color 0.2s ease, box-shadow 0.2s ease;
}

[data-theme="light"] .install-snippet-box {
  background-color: var(--md-sys-color-surface-container-lowest, #fbf8ff);
}

.install-snippet-box:hover {
  border-color: var(--md-sys-color-outline);
}

.install-snippet-box code {
  font-family: 'Roboto Mono', 'Fira Code', Consolas, Monaco, monospace;
  font-size: 13px;
  color: var(--md-sys-color-on-surface);
  font-weight: 500;
}


.sizes-showcase-row {
  display: flex;
  align-items: center;
  gap: 8px;
  flex-wrap: wrap;
  justify-content: center;
}

.size-item-box {
  display: flex;
  align-items: center;
  justify-content: center;
}

/* Theming & Color Engine Section */
.hct-controls-grid {
  display: grid;
  grid-template-columns: 1.2fr 1fr;
  gap: 32px;
  margin-top: 20px;
}

.hct-sliders-col {
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.slider-control-group {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.slider-label-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: var(--md-sys-typescale-label-large-size, 14px);
  font-weight: 500;
  font-family: inherit;
  color: var(--md-sys-color-on-surface);
}

.slider-value {
  padding: 2px 10px;
  border-radius: var(--md-sys-shape-corner-full, 9999px);
  background-color: var(--md-sys-color-primary-container);
  color: var(--md-sys-color-on-primary-container);
  font-family: inherit;
  font-size: 12.5px;
  font-weight: 600;
  letter-spacing: 0.3px;
}

.rgb-preview-col {
  display: flex;
  flex-direction: column;
  gap: 24px;
}

.color-section-label {
  display: flex;
  align-items: center;
  gap: 6px;
  font-size: var(--md-sys-typescale-label-medium-size, 13px);
  font-weight: 600;
  font-family: inherit;
  color: var(--md-sys-color-on-surface-variant);
  margin-bottom: 10px;
  letter-spacing: 0.2px;
}

/* Organic M3 Hex & Color Swatch Picker */
.hex-picker-row {
  display: flex;
  gap: 14px;
  align-items: center;
}

.custom-color-swatch-wrapper {
  position: relative;
  width: 48px;
  height: 48px;
  flex-shrink: 0;
}

.custom-color-swatch {
  width: 48px;
  height: 48px;
  border-radius: 16px;
  box-shadow: 0 0 0 2px var(--md-sys-color-surface-container-high), 0 0 0 4px var(--md-sys-color-outline-variant), var(--md-sys-elevation-level-1);
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  border: none;
  padding: 0;
  outline: none;
  transition: transform 0.2s cubic-bezier(0.2, 0, 0, 1), box-shadow 0.2s ease;
  user-select: none;
  -webkit-user-select: none;
}

.custom-color-swatch:hover {
  transform: scale(1.06);
  box-shadow: 0 0 0 2px var(--md-sys-color-surface-container-high), 0 0 0 4px var(--md-sys-color-primary), var(--md-sys-elevation-level-2);
}

.custom-color-swatch:active {
  transform: scale(0.92);
}

/* MD3E Color Popover */
.md3e-color-popover {
  position: absolute;
  top: calc(100% + 12px);
  left: 0;
  z-index: 1000;
  width: 280px;
  background-color: var(--md-sys-color-surface-container-high, #2B2930);
  border: 1px solid var(--md-sys-color-outline-variant, rgba(255,255,255,0.12));
  border-radius: var(--md-sys-shape-corner-extra-large, 24px);
  padding: 16px;
  box-shadow: var(--md-sys-elevation-level-4, 0 8px 24px rgba(0,0,0,0.4));
  backdrop-filter: blur(16px);
  display: flex;
  flex-direction: column;
  gap: 12px;
  box-sizing: border-box;
  animation: md3ePopIn 0.2s cubic-bezier(0.2, 0, 0, 1) forwards;
}

.md3e-color-popover[hidden] {
  display: none !important;
}

@keyframes md3ePopIn {
  from {
    opacity: 0;
    transform: translateY(-8px) scale(0.96);
  }
  to {
    opacity: 1;
    transform: translateY(0) scale(1);
  }
}

.popover-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.popover-title {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 13.5px;
  font-weight: 600;
  color: var(--md-sys-color-on-surface);
}

.popover-close-btn {
  background: none;
  border: none;
  color: var(--md-sys-color-on-surface-variant);
  cursor: pointer;
  padding: 4px;
  border-radius: 50%;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  transition: background-color 0.15s ease, color 0.15s ease;
}

.popover-close-btn:hover {
  background-color: var(--md-sys-color-surface-container-highest);
  color: var(--md-sys-color-on-surface);
}

/* 2D SV Canvas Area */
.color-sv-area {
  height: 130px;
  border-radius: 14px;
  position: relative;
  cursor: crosshair;
  overflow: hidden;
  user-select: none;
  touch-action: none;
  box-shadow: inset 0 0 0 1px rgba(0,0,0,0.2);
}

.color-sv-white {
  position: absolute;
  inset: 0;
  background: linear-gradient(to right, #fff, rgba(255,255,255,0));
}

.color-sv-black {
  position: absolute;
  inset: 0;
  background: linear-gradient(to top, #000, rgba(0,0,0,0));
}

.color-sv-handle {
  position: absolute;
  width: 16px;
  height: 16px;
  border-radius: 50%;
  border: 2.5px solid #ffffff;
  box-shadow: 0 0 0 1px rgba(0,0,0,0.5), 0 2px 4px rgba(0,0,0,0.4);
  transform: translate(-50%, -50%);
  pointer-events: none;
  left: 60%;
  top: 40%;
}

/* Hue Rainbow Slider */
.color-hue-bar {
  height: 14px;
  border-radius: 9999px;
  position: relative;
  cursor: pointer;
  user-select: none;
  touch-action: none;
  background: linear-gradient(to right, #ff0000 0%, #ffff00 17%, #00ff00 33%, #00ffff 50%, #0000ff 67%, #ff00ff 83%, #ff0000 100%);
  box-shadow: inset 0 0 0 1px rgba(0,0,0,0.15);
}

.color-hue-handle {
  position: absolute;
  top: 50%;
  width: 18px;
  height: 18px;
  border-radius: 50%;
  background-color: #ffffff;
  border: 2px solid var(--md-sys-color-surface, #141218);
  box-shadow: 0 2px 5px rgba(0,0,0,0.4);
  transform: translate(-50%, -50%);
  pointer-events: none;
  left: 77%;
}

/* Swatches Grid */
.popover-swatches-grid {
  display: grid;
  grid-template-columns: repeat(8, 1fr);
  gap: 6px;
}

.popover-swatch {
  height: 24px;
  border-radius: 50%;
  border: 1px solid var(--md-sys-color-outline-variant, rgba(255,255,255,0.15));
  cursor: pointer;
  padding: 0;
  transition: transform 0.15s ease, box-shadow 0.15s ease;
}

.popover-swatch:hover {
  transform: scale(1.15);
  box-shadow: 0 2px 6px rgba(0,0,0,0.3);
}

/* Footer Row */
.popover-footer-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding-top: 4px;
  border-top: 1px solid var(--md-sys-color-outline-variant, rgba(255,255,255,0.08));
}

.popover-hex-box {
  display: flex;
  align-items: center;
  gap: 4px;
  font-family: 'Roboto Mono', monospace;
  font-size: 13px;
  font-weight: 600;
  color: var(--md-sys-color-on-surface);
}

.popover-apply-btn {
  background-color: var(--md-sys-color-primary, #6750A4);
  color: var(--md-sys-color-on-primary, #ffffff);
  border: none;
  border-radius: 9999px;
  padding: 4px 14px;
  font-size: 12px;
  font-weight: 600;
  cursor: pointer;
  transition: background-color 0.15s ease, transform 0.15s ease;
}

.popover-apply-btn:hover {
  transform: scale(1.04);
}

.hex-input-container {
  flex: 1;
  position: relative;
  display: flex;
  align-items: center;
}

.hex-input-icon {
  position: absolute;
  left: 14px;
  color: var(--md-sys-color-on-surface-variant);
  font-size: 18px;
  pointer-events: none;
}

.hex-text-input {
  width: 100%;
  height: 48px;
  box-sizing: border-box;
  padding: 0 16px 0 42px;
  border-radius: var(--md-sys-shape-corner-full, 24px);
  border: 1.5px solid var(--md-sys-color-outline-variant);
  background-color: var(--md-sys-color-surface-container-high);
  color: var(--md-sys-color-on-surface);
  font-family: 'Roboto Mono', 'SF Mono', Consolas, monospace;
  font-size: 14.5px;
  font-weight: 600;
  letter-spacing: 0.5px;
  outline: none;
  transition: border-color 0.2s, box-shadow 0.2s;
}

.hex-text-input:focus {
  border-color: var(--md-sys-color-primary);
  box-shadow: 0 0 0 1px var(--md-sys-color-primary);
}

/* Tokens Chips Grid */
.tokens-chips-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 10px;
}

.token-chip,
.tokens-chips-grid .token-chip {
  height: 42px;
  padding: 0 12px;
  border-radius: var(--md-sys-shape-corner-full, 21px);
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0.2px;
  text-shadow: 0 0 1px rgba(0, 0, 0, 0.2);
  font-family: inherit;
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  box-shadow: none;
  transition: opacity 0.2s ease, transform 0.2s ease;
  user-select: none;
  position: relative;
}

.token-chip:hover {
  box-shadow: none;
}

/* Preset MD3 Palettes Chips */
.preset-swatches-row {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
}

.preset-swatch-item {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  height: 38px;
  padding: 0 16px 0 10px;
  border-radius: var(--md-sys-shape-corner-full, 19px);
  background-color: var(--md-sys-color-surface-container-high);
  color: var(--md-sys-color-on-surface);
  font-size: 13.5px;
  font-weight: 500;
  font-family: inherit;
  cursor: pointer;
  border: 1px solid var(--md-sys-color-outline-variant);
  box-sizing: border-box;
  box-shadow: none;
  transition: background-color 0.2s cubic-bezier(0.2, 0, 0, 1), border-color 0.2s ease;
}

.preset-swatch-item:hover {
  background-color: var(--md-sys-color-surface-container-highest);
  box-shadow: none;
}

.preset-swatch-item.active {
  background-color: var(--md-sys-color-secondary-container);
  color: var(--md-sys-color-on-secondary-container);
  border-color: var(--md-sys-color-primary);
  font-weight: 600;
  box-shadow: none;
}

.preset-swatch-dot {
  width: 18px;
  height: 18px;
  border-radius: 50%;
  flex-shrink: 0;
  box-shadow: inset 0 0 0 1px rgba(255, 255, 255, 0.2);
}

/* Reset Button */
.m3-reset-btn,
.reset-btn {
  background: var(--md-sys-color-surface-container-high);
  border: 1px solid var(--md-sys-color-outline-variant);
  color: var(--md-sys-color-primary);
  font-size: 13px;
  font-weight: 600;
  font-family: inherit;
  cursor: pointer;
  height: 36px;
  padding: 0 14px;
  border-radius: var(--md-sys-shape-corner-full, 18px);
  display: inline-flex;
  align-items: center;
  gap: 6px;
  box-shadow: none;
  transition: background-color 0.2s cubic-bezier(0.2, 0, 0, 1);
}

.m3-reset-btn:hover,
.reset-btn:hover {
  background-color: var(--md-sys-color-surface-container-highest);
  box-shadow: none;
}

/* ==========================================================================
   8. FOOTER (M3 1:1 SQUIGGLE PARITY)
   ========================================================================== */
.m3-site-footer {
  background-color: var(--md-sys-color-surface-container-low);
  margin-top: auto;
  margin-bottom: 0;
  padding: 48px 48px;
  border-radius: var(--md-sys-shape-corner-extra-large, 28px) var(--md-sys-shape-corner-extra-large, 28px) 0 0;
  width: 100%;
  box-sizing: border-box;
}

.squiggle-divider {
  width: 100%;
  height: 16px;
  color: var(--md-sys-color-outline-variant);
  margin-bottom: 32px;
  opacity: 0.6;
  overflow: visible;
}

.squiggle-divider svg {
  display: block;
  width: 100%;
  height: 16px;
  overflow: visible;
}

.footer-content {
  display: flex;
  flex-direction: column;
  gap: 32px;
}

.footer-top-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: 32px;
}

.footer-brand-logo {
  color: var(--md-sys-color-primary);
  margin-bottom: 12px;
}

.footer-desc {
  color: var(--md-sys-color-on-surface-variant);
  font-size: var(--md-sys-typescale-body-small-size, 12px);
  line-height: 18px;
  max-width: 320px;
}

.footer-col-title {
  color: var(--md-sys-color-on-surface);
  font-size: var(--md-sys-typescale-title-small-size, 14px);
  font-weight: 600;
  margin-bottom: 12px;
  display: block;
}

.footer-links-list {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.footer-links-list a {
  color: var(--md-sys-color-on-surface-variant);
  text-decoration: none;
  font-size: var(--md-sys-typescale-body-small-size, 12px);
  transition: color 0.2s;
}

.footer-links-list a:hover {
  color: var(--md-sys-color-primary);
}

.footer-bottom-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding-top: 24px;
  border-top: 1px solid var(--md-sys-color-outline-variant);
  color: var(--md-sys-color-on-surface-variant);
  font-size: var(--md-sys-typescale-body-small-size, 12px);
}

.footer-legal-links {
  display: flex;
  gap: 20px;
}

.footer-legal-links a {
  color: inherit;
  text-decoration: none;
}

.footer-github-link-btn {
  background-color: transparent;
  border: none;
  color: var(--md-sys-color-on-surface-variant);
  font-family: var(--md-sys-typescale-font-family, 'Roboto', system-ui, sans-serif);
  font-size: var(--md-sys-typescale-label-large-size, 14px);
  font-weight: 600;
  letter-spacing: 0.1px;
  padding: 10px 20px;
  border-radius: var(--md-sys-shape-corner-full, 9999px);
  cursor: pointer;
  user-select: none;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  transition:
    color var(--md-sys-motion-duration-short-2, 150ms) ease,
    background-color var(--md-sys-motion-duration-short-2, 150ms) ease,
    transform var(--md-sys-motion-duration-short-2, 100ms) ease;
  outline: none;
}

.footer-github-link-btn:hover {
  color: var(--md-sys-color-primary, #D0BCFF);
  background-color: var(--md-sys-color-surface-container-high, rgba(255, 255, 255, 0.08));
}

.footer-github-link-btn:active {
  transform: scale(0.96);
}

.footer-github-link-btn:focus-visible {
  outline: 2px solid var(--md-sys-color-primary, #D0BCFF);
  outline-offset: 2px;
}

/* ==========================================================================
   9. MOBILE & 5-TIER RESPONSIVE BREAKPOINT ARCHITECTURE
   ========================================================================== */

/* Mobile Top App Bar (Small 64dp) */
.mobile-top-bar {
  display: none;
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: 64px;
  background-color: var(--md-sys-color-surface-container-low, #1D1B20);
  padding: 0 16px;
  padding-top: env(safe-area-inset-top, 0px);
  align-items: center;
  justify-content: space-between;
  z-index: 90;
  box-shadow: var(--md-sys-elevation-level-1);
  box-sizing: border-box;
  transform: translateZ(0);
  -webkit-transform: translateZ(0);
  backface-visibility: hidden;
  -webkit-backface-visibility: hidden;
}

.mobile-top-bar-leading {
  display: flex;
  align-items: center;
  gap: 12px;
}

.mobile-top-bar-actions {
  display: flex;
  align-items: center;
  gap: 4px;
}

.mobile-bar-title {
  color: var(--md-sys-color-on-surface);
  font-size: var(--md-sys-typescale-title-large-size, 22px);
  font-weight: 400;
  letter-spacing: 0;
}

.mobile-drawer-btn {
  background: transparent;
  border: none;
  color: var(--md-sys-color-on-surface);
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  width: 48px;
  height: 48px;
  border-radius: var(--md-sys-shape-corner-full, 9999px);
  transition: background-color 0.2s;
  -webkit-tap-highlight-color: transparent;
}

.mobile-drawer-btn:hover {
  background-color: var(--md-sys-color-surface-container-high);
}

.drawer-scrim {
  display: none;
  position: fixed;
  inset: 0;
  background-color: rgba(0, 0, 0, 0.4);
  z-index: 65;
  backdrop-filter: blur(2px);
  -webkit-backdrop-filter: blur(2px);
}

/* Mobile Bottom Navigation Bar (MD3 Compact 80dp) */
.mobile-bottom-nav {
  display: none;
  position: fixed;
  bottom: 0;
  left: 0;
  right: 0;
  height: calc(80px + env(safe-area-inset-bottom, 0px));
  background-color: var(--md-sys-color-surface-container, #211F26);
  z-index: 85;
  box-shadow: var(--md-sys-elevation-level-2);
  align-items: center;
  justify-content: space-around;
  padding: 0 8px;
  padding-bottom: env(safe-area-inset-bottom, 0px);
  box-sizing: border-box;
  user-select: none;
  -webkit-user-select: none;
}

.mobile-nav-item {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 4px;
  background: transparent;
  border: none;
  color: var(--md-sys-color-on-surface-variant, #CAC4D0);
  cursor: pointer;
  padding: 4px 0;
  flex: 1;
  font-family: inherit;
  transition: color 0.2s;
  -webkit-tap-highlight-color: transparent;
}

.mobile-nav-pill {
  width: 64px;
  height: 32px;
  border-radius: var(--md-sys-shape-corner-full, 9999px);
  display: flex;
  align-items: center;
  justify-content: center;
  transition: background-color 0.25s var(--md-sys-motion-easing-expressive-spatial, ease), color 0.2s;
}

.mobile-nav-pill .mat-sym {
  font-size: 24px;
}

.mobile-nav-label {
  font-size: var(--md-sys-typescale-label-medium-size, 12px);
  font-weight: var(--md-sys-typescale-label-medium-weight, 500);
  letter-spacing: 0.5px;
  line-height: 16px;
}

.mobile-nav-item:hover .mobile-nav-pill {
  background-color: var(--md-sys-color-surface-container-high, #2B2930);
  color: var(--md-sys-color-on-surface, #E6E0E9);
}

.mobile-nav-item.active {
  color: var(--md-sys-color-on-surface, #E6E0E9);
}

.mobile-nav-item.active .mobile-nav-pill {
  background-color: var(--md-sys-color-secondary-container, #4A4458);
  color: var(--md-sys-color-on-secondary-container, #E8DEF8);
}

/* --------------------------------------------------------------------------
   1. COMPACT WINDOW CLASS (< 600px - Phones in Portrait)
   -------------------------------------------------------------------------- */
@media (max-width: 599px) {
  /* Touch Ergonomics & 48px Target Rule (WCAG 2.2 Level AA / Lighthouse) */
  .mobile-drawer-btn,
  .mobile-top-bar-actions .rail-bottom-btn {
    width: 48px;
    height: 48px;
    min-width: 48px;
    min-height: 48px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
  }

  .sub-nav-item,
  .drawer-dest-item,
  .sub-nav-accordion-header,
  .sub-nav-overview-pill {
    min-height: 48px;
    height: 48px;
    box-sizing: border-box;
  }

  .sub-nav-subitem {
    min-height: 44px;
    height: 44px;
    box-sizing: border-box;
  }

  .mobile-nav-item {
    min-height: 48px;
  }

  .mobile-top-bar {
    display: flex;
  }

  .mobile-bottom-nav {
    display: flex;
  }

  .app-nav-rail {
    display: none !important;
  }

  .sub-nav-drawer {
    left: 0;
    top: 64px;
    height: calc(100vh - 64px);
    width: min(320px, 85vw);
    transform: translateX(-100%);
    box-shadow: var(--md-sys-elevation-level-3);
    z-index: 95;
  }

  body.mobile-drawer-open .sub-nav-drawer {
    transform: translateX(0);
    opacity: 1;
    pointer-events: auto;
  }

  body.mobile-drawer-open .drawer-scrim {
    display: block;
  }

  .main {
    margin-left: 0 !important;
    padding-top: 64px;
    padding-bottom: 0 !important;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
  }

  .tab-view {
    padding: 16px 12px calc(80px + env(safe-area-inset-bottom, 0px) + 40px) 12px !important;
    flex: 1;
    width: 100%;
    max-width: 100vw;
    min-width: 0;
    box-sizing: border-box;
    overflow-x: hidden;
  }

  .docs-wrapper {
    width: 100%;
    max-width: 100%;
    min-width: 0;
    box-sizing: border-box;
  }

  .docs-hero-card {
    padding: 20px 16px !important;
    border-radius: var(--md-sys-shape-corner-large, 16px) !important;
  }

  .docs-hero-h1 {
    font-size: 22px !important;
    line-height: 28px !important;
  }

  .code-block-wrapper,
  .code-block-wrapper pre,
  .code-block-wrapper pre code,
  pre,
  code {
    max-width: 100%;
    min-width: 0;
    box-sizing: border-box;
  }

  .m3-site-footer {
    margin-top: auto;
    margin-bottom: 0;
    padding: 32px 20px calc(32px + 80px) 20px;
    border-radius: var(--md-sys-shape-corner-large, 20px) var(--md-sys-shape-corner-large, 20px) 0 0;
  }

  .category-title {
    padding-left: 0;
    font-size: var(--md-sys-typescale-headline-small-size, 24px);
  }

  .copy-anchor-btn {
    position: static;
    opacity: 0.85;
    visibility: visible;
  }

  .home-hero-container,
  .hero-split-grid {
    grid-template-columns: 1fr;
    gap: 20px;
  }

  .home-hero-thesis {
    padding: 24px 18px;
    border-radius: var(--md-sys-shape-corner-large, 16px);
  }

  .home-hero-title {
    font-size: var(--md-sys-typescale-headline-large-size, 32px);
    line-height: 38px;
  }

  .home-actions-row {
    flex-direction: column;
    width: 100%;
    gap: 10px;
  }

  .home-actions-row md-button {
    width: 100%;
  }

  .live-showcase-grid-row {
    flex-direction: column;
  }

  .home-live-card {
    padding: 20px 16px;
    border-radius: var(--md-sys-shape-corner-large, 16px);
  }

  .home-exp-band {
    flex-direction: column;
    align-items: flex-start;
    padding: 16px;
    gap: 12px;
  }

  .home-exp-controls {
    width: 100%;
    justify-content: space-between;
  }

  .pillars-grid {
    grid-template-columns: 1fr;
    gap: 16px;
  }

  .cards-grid {
    grid-template-columns: 1fr !important;
    gap: 16px;
  }

  .comp-card {
    padding: 18px 16px;
    gap: 14px;
  }

  .comp-preview {
    padding: 20px 14px;
    min-height: 110px;
    overflow: visible;
    max-width: 100%;
    box-sizing: border-box;
  }

  .install-grid {
    grid-template-columns: 1fr;
    gap: 16px;
  }

  .next-steps-card {
    flex-direction: column;
    align-items: flex-start;
    padding: 24px 18px;
    border-radius: var(--md-sys-shape-corner-large, 16px);
  }

  .footer-top-grid {
    grid-template-columns: 1fr;
    gap: 24px;
  }

  .footer-bottom-row {
    flex-direction: column;
    gap: 8px;
    align-items: flex-start;
  }
}

/* --------------------------------------------------------------------------
   2. MEDIUM WINDOW CLASS (600px – 839px - Small Tablets & Foldables)
   -------------------------------------------------------------------------- */
@media (min-width: 600px) and (max-width: 839px) {
  .mobile-top-bar {
    display: none;
  }

  .mobile-bottom-nav {
    display: none;
  }

  .app-nav-rail {
    display: flex;
    width: 80px;
  }

  .sub-nav-drawer {
    left: 80px;
    top: 0;
    height: 100vh;
    width: 280px;
    transform: translateX(-100%);
    box-shadow: var(--md-sys-elevation-level-3);
    z-index: 75;
  }

  body.mobile-drawer-open .sub-nav-drawer {
    transform: translateX(0);
    opacity: 1;
    pointer-events: auto;
  }

  body.mobile-drawer-open .drawer-scrim {
    display: block;
  }

  .main {
    margin-left: 80px !important;
    padding-top: 0;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
  }

  .tab-view {
    padding: 32px 24px 48px 24px;
    flex: 1;
  }

  .m3-site-footer {
    margin-top: auto;
    margin-bottom: 0;
    padding: 40px 32px;
  }

  .home-hero-container,
  .hero-split-grid {
    grid-template-columns: 1fr;
    gap: 24px;
  }

  .pillars-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 20px;
  }

  .cards-grid {
    grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
    gap: 20px;
  }

  .install-grid {
    grid-template-columns: 1fr;
    gap: 20px;
  }

  .footer-top-grid {
    grid-template-columns: 1fr 1fr;
  }
}

/* --------------------------------------------------------------------------
   3. EXPANDED WINDOW CLASS (840px – 1199px - Tablets in Landscape & Small Laptops)
   -------------------------------------------------------------------------- */
@media (min-width: 840px) and (max-width: 1199px) {
  .mobile-top-bar {
    display: none;
  }

  .mobile-bottom-nav {
    display: none;
  }

  .app-nav-rail {
    display: flex;
  }

  .sub-nav-drawer {
    left: 80px;
    width: 280px;
  }

  .main {
    margin-left: calc(80px + 280px);
  }

  body.drawer-collapsed .main {
    margin-left: 80px;
  }

  .tab-view {
    padding: 40px 32px 80px 32px;
  }

  .pillars-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 24px;
  }

  .cards-grid {
    grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
    gap: 24px;
  }

  .install-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 24px;
  }

  .home-hero-container {
    grid-template-columns: 1.1fr 1fr;
    gap: 24px;
  }
}

/* --------------------------------------------------------------------------
   4. LARGE WINDOW CLASS (1200px – 1599px - Desktop Monitors)
   -------------------------------------------------------------------------- */
@media (min-width: 1200px) and (max-width: 1599px) {
  .mobile-top-bar,
  .mobile-bottom-nav {
    display: none;
  }

  .cards-grid {
    grid-template-columns: repeat(auto-fill, minmax(360px, 1fr));
    gap: 28px;
  }

  .pillars-grid {
    grid-template-columns: repeat(4, 1fr);
    gap: 24px;
  }

  .install-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 24px;
  }
}

/* --------------------------------------------------------------------------
   5. EXTRA LARGE WINDOW CLASS (≥ 1600px - Ultra-wide & 4K Displays)
   -------------------------------------------------------------------------- */
@media (min-width: 1600px) {
  .mobile-top-bar,
  .mobile-bottom-nav {
    display: none;
  }

  .tab-view {
    max-width: 1560px;
    margin: 0 auto;
    padding: 56px 48px 112px 48px;
  }

  .cards-grid {
    grid-template-columns: repeat(auto-fill, minmax(360px, 1fr));
    gap: 32px;
  }

  .pillars-grid {
    grid-template-columns: repeat(4, 1fr);
    gap: 28px;
  }

  .home-hero-container {
    grid-template-columns: 1.25fr 1fr;
    gap: 40px;
  }
}

/* ==========================================================================
   6. AMBIENT BACKGROUND WAVE (MD3E HOME VIEW EXCLUSIVE & NATURAL SCROLL)
   ========================================================================== */
.main {
  position: relative;
  z-index: 1;
  background-color: transparent !important;
}

.ambient-stage-wrapper {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  width: 100%;
  height: 100%;
  max-height: 100%;
  pointer-events: none;
  z-index: 2;
  overflow: hidden;
  display: flex;
  justify-content: center;
  align-items: flex-start;
}

body:not([data-active-tab="home"]) .ambient-stage-wrapper {
  display: none !important;
}

@media (max-width: 839px) {
  .ambient-stage-wrapper {
    display: none !important;
  }
}

.ambient-wave-anchor {
  position: absolute;
  top: 400px;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  align-items: center;
  justify-content: center;
  will-change: transform;
  backface-visibility: hidden;
}

#ambientWaveCanvas {
  display: block;
  background: transparent;
  will-change: contents;
  contain: strict;
}

/* Stacking Context Hierarchy:
   - Level 30: All Cards, Hero Thesis, Live Showcase Inner Cells/Buttons/Sliders, Experiment Band, Pillars, Next Steps, Open Source Disclaimer (ALWAYS on top)
   - Level 10: Step 2 Wave Canvas (passes over Live Showcase surface and Footer, behind Level 30 items)
   - Level 4:  Live Showcase Card Base Surface (.home-live-card::before)
   - Level 2:  Step 1 Wave Canvas (passes behind Live Showcase and Level 30, over Footer)
   - Level 1:  Site Footer (.m3-site-footer)
*/
.tab-view {
  position: relative;
  z-index: auto;
}

.home-hero-container {
  position: relative;
}

.home-hero-thesis {
  position: relative;
  z-index: 30;
}

.home-live-card {
  position: relative;
  z-index: auto;
}

.home-live-header,
.home-live-body,
.live-showcase-cell,
.live-buttons-cluster,
.home-exp-band,
.home-pillars-section,
.home-why-header-card,
.pillars-grid,
.pillar-card,
.next-steps-card,
.disclaimer-card,
.component-card-stage,
.code-block-wrapper,
.home-get-started-banner {
  position: relative;
  z-index: 30;
}

/* Footer sits under the wave so waves pass over it */
.m3-site-footer {
  position: relative;
  z-index: 1;
}