/* ==========================================================================
   VOTHub — Material 3 Expressive Design System & Tokens
   ========================================================================== */

:root {
  /* Typography Tokens */
  --md-sys-font-sans: 'Plus Jakarta Sans', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  --md-sys-font-mono: 'JetBrains Mono', monospace;

  /* Typography Scale */
  --md-sys-typescale-display-large: 700 2.25rem/2.75rem var(--md-sys-font-sans);
  --md-sys-typescale-headline-large: 700 1.875rem/2.375rem var(--md-sys-font-sans);
  --md-sys-typescale-headline-medium: 600 1.5rem/2rem var(--md-sys-font-sans);
  --md-sys-typescale-headline-small: 600 1.25rem/1.75rem var(--md-sys-font-sans);
  --md-sys-typescale-title-large: 600 1.125rem/1.5rem var(--md-sys-font-sans);
  --md-sys-typescale-title-medium: 600 1rem/1.5rem var(--md-sys-font-sans);
  --md-sys-typescale-title-small: 600 0.875rem/1.25rem var(--md-sys-font-sans);
  --md-sys-typescale-body-large: 400 1rem/1.5rem var(--md-sys-font-sans);
  --md-sys-typescale-body-medium: 400 0.875rem/1.35rem var(--md-sys-font-sans);
  --md-sys-typescale-body-small: 400 0.75rem/1.15rem var(--md-sys-font-sans);
  --md-sys-typescale-label-large: 600 0.875rem/1.25rem var(--md-sys-font-sans);
  --md-sys-typescale-label-medium: 600 0.75rem/1rem var(--md-sys-font-sans);
  --md-sys-typescale-label-small: 500 0.6875rem/0.875rem var(--md-sys-font-sans);
  --md-sys-typescale-code: 400 0.8125rem/1.35rem var(--md-sys-font-mono);

  /* Shape Scale (Expressive) */
  --md-sys-shape-corner-none: 0px;
  --md-sys-shape-corner-extra-small: 4px;
  --md-sys-shape-corner-small: 8px;
  --md-sys-shape-corner-medium: 12px;
  --md-sys-shape-corner-large: 16px;
  --md-sys-shape-corner-extra-large: 24px;
  --md-sys-shape-corner-full: 9999px;

  /* Motion & Durations */
  --md-sys-motion-duration-short: 150ms;
  --md-sys-motion-duration-medium: 250ms;
  --md-sys-motion-duration-long: 350ms;
  --md-sys-motion-easing-standard: cubic-bezier(0.2, 0, 0, 1);
  --md-sys-motion-easing-emphasized: cubic-bezier(0.2, 0, 0, 1.2);

  /* Elevation (Ambient & Key Shadows) */
  --md-sys-elevation-0: none;
  --md-sys-elevation-1: 0px 1px 3px 1px rgba(0, 0, 0, 0.25), 0px 1px 2px 0px rgba(0, 0, 0, 0.35);
  --md-sys-elevation-2: 0px 2px 6px 2px rgba(0, 0, 0, 0.25), 0px 1px 2px 0px rgba(0, 0, 0, 0.35);
  --md-sys-elevation-3: 0px 4px 8px 3px rgba(0, 0, 0, 0.25), 0px 1px 3px 0px rgba(0, 0, 0, 0.35);
  --md-sys-elevation-4: 0px 6px 10px 4px rgba(0, 0, 0, 0.3), 0px 2px 3px 0px rgba(0, 0, 0, 0.4);

  /* Semantic M3 Dark Theme (Default) — Aliases to VOT Brand Tokens */
  --md-sys-color-primary: var(--vot-primary);
  --md-sys-color-on-primary: var(--vot-on-primary);
  --md-sys-color-primary-container: var(--vot-primary-container);
  --md-sys-color-on-primary-container: #c2e8ff;
  --md-sys-color-primary-hover: var(--vot-primary-hover);

  --md-sys-color-secondary: var(--vot-muted);
  --md-sys-color-on-secondary: var(--vot-surface);
  --md-sys-color-secondary-container: #334155;
  --md-sys-color-on-secondary-container: #e2e8f0;

  --md-sys-color-tertiary: #a78bfa;
  --md-sys-color-on-tertiary: #2e1065;
  --md-sys-color-tertiary-container: #4c1d95;
  --md-sys-color-on-tertiary-container: #ede9fe;

  /* Surfaces & Containers */
  --md-sys-color-background: #0b1120;
  --md-sys-color-on-background: var(--vot-text);

  --md-sys-color-surface: var(--vot-surface);
  --md-sys-color-surface-dim: #090e1a;
  --md-sys-color-surface-bright: #1e293b;
  --md-sys-color-surface-container-lowest: #070b14;
  --md-sys-color-surface-container-low: #131d31;
  --md-sys-color-surface-container: var(--vot-surface-container);
  --md-sys-color-surface-container-high: var(--vot-surface-container-high);
  --md-sys-color-surface-container-highest: #334155;

  --md-sys-color-on-surface: var(--vot-text);
  --md-sys-color-on-surface-variant: var(--vot-muted);
  --md-sys-color-on-surface-subtle: #64748b;

  --md-sys-color-outline: var(--vot-outline);
  --md-sys-color-outline-variant: #334155;
  --md-sys-color-outline-subtle: #1e293b;

  /* Status & Semantic Feedback */
  --md-sys-color-error: var(--vot-error);
  --md-sys-color-error-container: var(--vot-error-container);
  --md-sys-color-on-error: #ffffff;
  --md-sys-color-on-error-container: #fecaca;

  --md-sys-color-success: #4ade80;
  --md-sys-color-success-container: #052e16;
  --md-sys-color-on-success-container: #bbf7d0;

  --md-sys-color-warning: #facc15;
  --md-sys-color-warning-container: #422006;
  --md-sys-color-on-warning-container: #fef08a;

  --md-sys-color-info: #60a5fa;
  --md-sys-color-info-container: #172554;
  --md-sys-color-on-info-container: #bfdbfe;
}

/* Light Theme Support */
[data-theme="light"],
[data-vot-theme="light"] {
  --md-sys-color-primary: var(--vot-primary);
  --md-sys-color-on-primary: var(--vot-on-primary);
  --md-sys-color-primary-container: var(--vot-primary-container);
  --md-sys-color-on-primary-container: #0369a1;
  --md-sys-color-primary-hover: var(--vot-primary-hover);

  --md-sys-color-secondary: var(--vot-muted);
  --md-sys-color-on-secondary: #ffffff;
  --md-sys-color-secondary-container: #e2e8f0;
  --md-sys-color-on-secondary-container: #1e293b;

  --md-sys-color-background: #f8fafc;
  --md-sys-color-on-background: var(--vot-text);

  --md-sys-color-surface: var(--vot-surface);
  --md-sys-color-surface-dim: #f1f5f9;
  --md-sys-color-surface-bright: #ffffff;
  --md-sys-color-surface-container-lowest: #ffffff;
  --md-sys-color-surface-container-low: #f8fafc;
  --md-sys-color-surface-container: var(--vot-surface-container);
  --md-sys-color-surface-container-high: var(--vot-surface-container-high);
  --md-sys-color-surface-container-highest: #cbd5e1;

  --md-sys-color-on-surface: var(--vot-text);
  --md-sys-color-on-surface-variant: var(--vot-muted);
  --md-sys-color-on-surface-subtle: #94a3b8;

  --md-sys-color-outline: var(--vot-outline);
  --md-sys-color-outline-variant: #e2e8f0;
  --md-sys-color-outline-subtle: #f1f5f9;

  --md-sys-color-error: var(--vot-error);
  --md-sys-color-error-container: var(--vot-error-container);
  --md-sys-color-on-error: #ffffff;
  --md-sys-color-on-error-container: #7f1d1d;

  --md-sys-elevation-1: 0px 1px 3px 0px rgba(0, 0, 0, 0.08), 0px 1px 2px 0px rgba(0, 0, 0, 0.04);
  --md-sys-elevation-2: 0px 2px 6px 0px rgba(0, 0, 0, 0.08), 0px 1px 2px 0px rgba(0, 0, 0, 0.04);
  --md-sys-elevation-3: 0px 4px 10px 0px rgba(0, 0, 0, 0.1), 0px 1px 3px 0px rgba(0, 0, 0, 0.05);
}

/* ==========================================================================
   Base & Reset
   ========================================================================== */

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

body {
  font-family: var(--md-sys-font-sans);
  background-color: var(--md-sys-color-background);
  color: var(--md-sys-color-on-surface);
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  min-height: 100vh;
  transition: background-color var(--md-sys-motion-duration-medium) ease,
              color var(--md-sys-motion-duration-medium) ease;
}

a {
  color: inherit;
  text-decoration: none;
}

button, input, select, textarea {
  font: inherit;
  color: inherit;
}

/* App Shell Layout */
.app-container {
  display: flex;
  flex-direction: column;
  min-height: 100vh;
}

.main-content {
  flex: 1;
  max-width: 1200px;
  width: 100%;
  margin: 0 auto;
  padding: 1.5rem 1rem 5.5rem 1rem;
}

@media (min-width: 600px) {
  .main-content {
    padding: 2rem 1.5rem 3.5rem 1.5rem;
  }
}

@media (min-width: 840px) {
  .main-content {
    padding: 2.5rem 2rem 4rem 2rem;
  }
}

/* ==========================================================================
   Material 3 Top App Bar
   ========================================================================== */

.m3-top-app-bar {
  position: sticky;
  top: 0;
  z-index: 40;
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 64px;
  padding: 0 1.25rem;
  background-color: var(--md-sys-color-surface);
  border-bottom: 1px solid var(--md-sys-color-outline-variant);
  transition: background-color var(--md-sys-motion-duration-short) ease,
              border-color var(--md-sys-motion-duration-short) ease;
}

@media (min-width: 600px) {
  .m3-top-app-bar {
    padding: 0 2rem;
  }
}

.m3-app-bar-start {
  display: flex;
  align-items: center;
  gap: 2rem;
}

.m3-brand {
  display: inline-flex;
  align-items: center;
  gap: 0.625rem;
  font: var(--md-sys-typescale-title-large);
  color: var(--md-sys-color-on-surface);
  letter-spacing: -0.02em;
  user-select: none;
}

.m3-brand-logo-mark {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 32px;
  height: 32px;
  border-radius: var(--md-sys-shape-corner-medium);
  background: linear-gradient(135deg, var(--md-sys-color-primary) 0%, var(--md-sys-color-tertiary) 100%);
  color: var(--md-sys-color-on-primary);
  font-weight: 800;
  font-size: 0.9375rem;
}

.m3-brand-name {
  font-weight: 700;
  letter-spacing: -0.03em;
}

.m3-nav-links {
  display: none;
  align-items: center;
  gap: 0.5rem;
}

@media (min-width: 600px) {
  .m3-nav-links {
    display: flex;
  }
}

.m3-nav-link {
  display: inline-flex;
  align-items: center;
  padding: 0.5rem 1rem;
  border-radius: var(--md-sys-shape-corner-full);
  font: var(--md-sys-typescale-label-large);
  color: var(--md-sys-color-on-surface-variant);
  transition: all var(--md-sys-motion-duration-short) ease;
}

.m3-nav-link:hover {
  background-color: var(--md-sys-color-surface-container-high);
  color: var(--md-sys-color-on-surface);
}

.m3-nav-link.active {
  background-color: var(--md-sys-color-primary-container);
  color: var(--md-sys-color-on-primary-container);
}

.m3-app-bar-end {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.m3-theme-toggle {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 38px;
  height: 38px;
  border-radius: var(--md-sys-shape-corner-full);
  background-color: transparent;
  color: var(--md-sys-color-on-surface-variant);
  border: none;
  cursor: pointer;
  transition: all var(--md-sys-motion-duration-short) ease;
}

.m3-theme-toggle:hover {
  background-color: var(--md-sys-color-surface-container-high);
  color: var(--md-sys-color-on-surface);
}

.m3-user-profile {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.m3-avatar {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  border-radius: var(--md-sys-shape-corner-full);
  background-color: var(--md-sys-color-secondary-container);
  color: var(--md-sys-color-on-secondary-container);
  font: var(--md-sys-typescale-label-large);
  font-weight: 600;
  user-select: none;
}

.m3-user-name {
  display: none;
  font: var(--md-sys-typescale-body-medium);
  color: var(--md-sys-color-on-surface);
  font-weight: 500;
}

@media (min-width: 600px) {
  .m3-user-name {
    display: inline-block;
  }
}

/* ==========================================================================
   Page Headers & Breadcrumbs
   ========================================================================== */

.m3-breadcrumb {
  display: inline-flex;
  align-items: center;
  gap: 0.375rem;
  font: var(--md-sys-typescale-label-medium);
  color: var(--md-sys-color-on-surface-variant);
  margin-bottom: 1rem;
  transition: color var(--md-sys-motion-duration-short) ease;
}

.m3-breadcrumb:hover {
  color: var(--md-sys-color-primary);
}

.m3-page-header {
  display: flex;
  flex-direction: column;
  gap: 1rem;
  margin-bottom: 1.75rem;
}

@media (min-width: 600px) {
  .m3-page-header {
    flex-direction: row;
    justify-content: space-between;
    align-items: flex-end;
  }
}

.m3-page-title {
  font: var(--md-sys-typescale-headline-large);
  color: var(--md-sys-color-on-surface);
  letter-spacing: -0.03em;
  margin-bottom: 0.375rem;
}

.m3-page-subtitle {
  font: var(--md-sys-typescale-body-medium);
  color: var(--md-sys-color-on-surface-variant);
  max-width: 650px;
}

.m3-page-header-actions {
  display: none;
}

@media (min-width: 600px) {
  .m3-page-header-actions {
    display: flex;
    align-items: center;
    gap: 0.75rem;
  }
}

/* ==========================================================================
   Search & Filter Bar (M3 Expressive Chips & Search)
   ========================================================================== */

.m3-filter-section {
  display: flex;
  flex-direction: column;
  gap: 1rem;
  margin-bottom: 1.75rem;
}

@media (min-width: 768px) {
  .m3-filter-section {
    flex-direction: row;
    align-items: center;
    justify-content: space-between;
  }
}

.m3-search-bar {
  position: relative;
  display: flex;
  align-items: center;
  width: 100%;
  max-width: 380px;
}

.m3-search-icon {
  position: absolute;
  left: 1rem;
  color: var(--md-sys-color-on-surface-subtle);
  pointer-events: none;
  display: flex;
  align-items: center;
}

.m3-search-input {
  width: 100%;
  min-height: 44px;
  padding: 0.625rem 1rem 0.625rem 2.625rem;
  border-radius: var(--md-sys-shape-corner-full);
  background-color: var(--md-sys-color-surface-container);
  border: 1px solid var(--md-sys-color-outline-subtle);
  color: var(--md-sys-color-on-surface);
  font: var(--md-sys-typescale-body-medium);
  outline: none;
  transition: border-color var(--md-sys-motion-duration-short) ease,
              background-color var(--md-sys-motion-duration-short) ease,
              box-shadow var(--md-sys-motion-duration-short) ease;
}

.m3-search-input:focus {
  border-color: var(--md-sys-color-primary);
  background-color: var(--md-sys-color-surface-container-high);
  box-shadow: 0 0 0 1px var(--md-sys-color-primary);
}

.m3-search-clear-btn {
  position: absolute;
  right: 0.75rem;
  background: none;
  border: none;
  color: var(--md-sys-color-on-surface-subtle);
  cursor: pointer;
  padding: 0.25rem;
  display: flex;
  align-items: center;
  border-radius: var(--md-sys-shape-corner-full);
}

.m3-search-clear-btn:hover {
  color: var(--md-sys-color-on-surface);
}

.m3-filter-chips {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  overflow-x: auto;
  padding-bottom: 0.25rem;
  -webkit-overflow-scrolling: touch;
}

.m3-filter-chip {
  display: inline-flex;
  align-items: center;
  gap: 0.375rem;
  padding: 0.4375rem 0.875rem;
  border-radius: var(--md-sys-shape-corner-small);
  border: 1px solid var(--md-sys-color-outline-variant);
  background-color: var(--md-sys-color-surface-container-low);
  color: var(--md-sys-color-on-surface-variant);
  font: var(--md-sys-typescale-label-medium);
  cursor: pointer;
  user-select: none;
  white-space: nowrap;
  transition: all var(--md-sys-motion-duration-short) ease;
}

.m3-filter-chip:hover {
  background-color: var(--md-sys-color-surface-container-high);
  color: var(--md-sys-color-on-surface);
}

.m3-filter-chip.active {
  background-color: var(--md-sys-color-primary-container);
  color: var(--md-sys-color-on-primary-container);
  border-color: var(--md-sys-color-primary);
  font-weight: 700;
}

/* ==========================================================================
   Buttons (M3 Expressive: Filled, Tonal, Outlined, Text, FAB)
   ========================================================================== */

.m3-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  min-height: 44px;
  padding: 0.625rem 1.375rem;
  border-radius: var(--md-sys-shape-corner-full);
  font: var(--md-sys-typescale-label-large);
  border: 1px solid transparent;
  cursor: pointer;
  user-select: none;
  transition: all var(--md-sys-motion-duration-short) var(--md-sys-motion-easing-standard);
  text-decoration: none;
  white-space: nowrap;
}

.m3-btn:disabled {
  opacity: 0.45;
  cursor: not-allowed;
  pointer-events: none;
}

.m3-btn:focus-visible,
.m3-fab:focus-visible,
.m3-theme-toggle:focus-visible,
.m3-filter-chip:focus-visible,
.m3-tab-item:focus-visible,
.m3-nav-link:focus-visible {
  outline: 2px solid var(--md-sys-color-primary);
  outline-offset: 2px;
}

/* Filled Button */
.m3-btn-filled {
  background-color: var(--md-sys-color-primary);
  color: var(--md-sys-color-on-primary);
  box-shadow: var(--md-sys-elevation-1);
}

.m3-btn-filled:hover {
  background-color: var(--md-sys-color-primary-hover);
  box-shadow: var(--md-sys-elevation-2);
}

.m3-btn-filled:active {
  box-shadow: var(--md-sys-elevation-1);
  transform: scale(0.98);
}

/* Tonal Button */
.m3-btn-tonal {
  background-color: var(--md-sys-color-surface-container-high);
  color: var(--md-sys-color-on-surface);
}

.m3-btn-tonal:hover {
  background-color: var(--md-sys-color-surface-container-highest);
}

.m3-btn-tonal:active {
  transform: scale(0.98);
}

/* Outlined Button */
.m3-btn-outlined {
  background-color: transparent;
  border-color: var(--md-sys-color-outline);
  color: var(--md-sys-color-primary);
}

.m3-btn-outlined:hover {
  background-color: var(--md-sys-color-surface-container-low);
  border-color: var(--md-sys-color-primary);
}

/* Text Button */
.m3-btn-text {
  background-color: transparent;
  color: var(--md-sys-color-primary);
  padding: 0.5rem 0.875rem;
  min-height: 38px;
}

.m3-btn-text:hover {
  background-color: var(--md-sys-color-surface-container-high);
}

.m3-btn-sm {
  min-height: 36px;
  padding: 0.375rem 0.875rem;
  font: var(--md-sys-typescale-label-medium);
}

.m3-btn-icon {
  width: 40px;
  height: 40px;
  min-height: 40px;
  padding: 0;
  border-radius: var(--md-sys-shape-corner-full);
}

/* Extended Floating Action Button (FAB) */
.m3-fab-container {
  position: fixed;
  right: 1.25rem;
  bottom: 1.25rem;
  z-index: 50;
}

@media (min-width: 600px) {
  .m3-fab-container {
    display: none;
  }
}

.m3-fab {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.625rem;
  min-height: 56px;
  min-width: 56px;
  padding: 0 1.25rem;
  border-radius: var(--md-sys-shape-corner-extra-large);
  background-color: var(--md-sys-color-primary-container);
  color: var(--md-sys-color-on-primary-container);
  border: none;
  font: var(--md-sys-typescale-label-large);
  box-shadow: var(--md-sys-elevation-3);
  cursor: pointer;
  transition: transform var(--md-sys-motion-duration-short) ease, box-shadow var(--md-sys-motion-duration-short) ease;
}

.m3-fab:active {
  transform: scale(0.96);
  box-shadow: var(--md-sys-elevation-1);
}

/* ==========================================================================
   Project Grid & Cards (Filled M3 Surface Architecture)
   ========================================================================== */

.projects-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.25rem;
}

@media (min-width: 600px) {
  .projects-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 1.25rem;
  }
}

@media (min-width: 1024px) {
  .projects-grid {
    grid-template-columns: repeat(3, 1fr);
    gap: 1.5rem;
  }
}

.m3-project-card {
  position: relative;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  background-color: var(--md-sys-color-surface-container);
  border-radius: var(--md-sys-shape-corner-large);
  padding: 1.5rem;
  border: 1px solid var(--md-sys-color-outline-subtle);
  transition: transform var(--md-sys-motion-duration-short) var(--md-sys-motion-easing-standard),
              background-color var(--md-sys-motion-duration-short) ease,
              box-shadow var(--md-sys-motion-duration-short) ease,
              border-color var(--md-sys-motion-duration-short) ease;
  cursor: pointer;
  text-decoration: none;
}

.m3-project-card:hover {
  background-color: var(--md-sys-color-surface-container-high);
  border-color: var(--md-sys-color-outline-variant);
  transform: translateY(-3px);
  box-shadow: var(--md-sys-elevation-2);
}

.m3-project-card-header {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 0.75rem;
  margin-bottom: 0.75rem;
}

.m3-project-card-title-group {
  display: flex;
  align-items: flex-start;
  gap: 0.75rem;
}

.m3-project-card-icon {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  border-radius: var(--md-sys-shape-corner-medium);
  background-color: var(--md-sys-color-surface-container-highest);
  color: var(--md-sys-color-primary);
  flex-shrink: 0;
}

.m3-project-card-title {
  font: var(--md-sys-typescale-title-large);
  color: var(--md-sys-color-on-surface);
  line-height: 1.3;
}

.m3-project-card-slug {
  font: var(--md-sys-typescale-code);
  font-size: 0.75rem;
  color: var(--md-sys-color-on-surface-subtle);
  margin-top: 0.125rem;
}

.m3-project-card-summary {
  font: var(--md-sys-typescale-body-medium);
  color: var(--md-sys-color-on-surface-variant);
  margin-bottom: 1.5rem;
  line-height: 1.45;
  flex: 1;
  display: -webkit-box;
  -webkit-line-clamp: 3;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.m3-project-card-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-top: 0.875rem;
  border-top: 1px solid var(--md-sys-color-outline-variant);
  font: var(--md-sys-typescale-label-small);
  color: var(--md-sys-color-on-surface-subtle);
}

.m3-project-card-footer-meta {
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

/* ==========================================================================
   Rich Empty & Loading States (M3 Expressive)
   ========================================================================== */

.m3-empty-state-card {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  background-color: var(--md-sys-color-surface-container-low);
  border: 1px solid var(--md-sys-color-outline-subtle);
  border-radius: var(--md-sys-shape-corner-extra-large);
  padding: 3.5rem 1.5rem;
  max-width: 680px;
  margin: 2rem auto;
}

@media (min-width: 600px) {
  .m3-empty-state-card {
    padding: 4rem 3rem;
  }
}

.m3-empty-state-icon-container {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 72px;
  height: 72px;
  border-radius: var(--md-sys-shape-corner-extra-large);
  background-color: var(--md-sys-color-surface-container-high);
  color: var(--md-sys-color-primary);
  margin-bottom: 1.5rem;
}

.m3-empty-state-title {
  font: var(--md-sys-typescale-headline-medium);
  color: var(--md-sys-color-on-surface);
  margin-bottom: 0.5rem;
}

.m3-empty-state-description {
  font: var(--md-sys-typescale-body-medium);
  color: var(--md-sys-color-on-surface-variant);
  max-width: 460px;
  margin-bottom: 2rem;
}

.m3-empty-state-actions {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
  width: 100%;
  max-width: 320px;
}

@media (min-width: 480px) {
  .m3-empty-state-actions {
    flex-direction: row;
    justify-content: center;
    width: auto;
    max-width: none;
  }
}

/* Starter Templates Grid in Empty State */
.m3-starter-templates-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 0.875rem;
  width: 100%;
  margin-top: 2rem;
  padding-top: 1.75rem;
  border-top: 1px solid var(--md-sys-color-outline-variant);
  text-align: left;
}

@media (min-width: 560px) {
  .m3-starter-templates-grid {
    grid-template-columns: repeat(3, 1fr);
  }
}

.m3-starter-card {
  display: flex;
  flex-direction: column;
  padding: 1rem;
  background-color: var(--md-sys-color-surface-container);
  border: 1px solid var(--md-sys-color-outline-subtle);
  border-radius: var(--md-sys-shape-corner-medium);
  transition: all var(--md-sys-motion-duration-short) ease;
  cursor: pointer;
  text-decoration: none;
}

.m3-starter-card:hover {
  background-color: var(--md-sys-color-surface-container-high);
  border-color: var(--md-sys-color-primary);
  transform: translateY(-2px);
}

.m3-starter-card-icon {
  font-size: 1.5rem;
  margin-bottom: 0.375rem;
}

.m3-starter-card-title {
  font: var(--md-sys-typescale-title-small);
  color: var(--md-sys-color-on-surface);
  margin-bottom: 0.25rem;
}

.m3-starter-card-desc {
  font: var(--md-sys-typescale-body-small);
  color: var(--md-sys-color-on-surface-subtle);
  line-height: 1.35;
}

/* Skeleton Loading & Shimmer */
.m3-skeleton-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.25rem;
}

@media (min-width: 600px) {
  .m3-skeleton-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (min-width: 1024px) {
  .m3-skeleton-grid {
    grid-template-columns: repeat(3, 1fr);
  }
}

.m3-skeleton-card {
  background-color: var(--md-sys-color-surface-container);
  border-radius: var(--md-sys-shape-corner-large);
  padding: 1.5rem;
  position: relative;
  overflow: hidden;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  min-height: 190px;
}

.m3-skeleton-card-header {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  margin-bottom: 1rem;
}

.m3-skeleton-icon {
  width: 36px;
  height: 36px;
  border-radius: var(--md-sys-shape-corner-medium);
  background-color: var(--md-sys-color-surface-container-highest);
}

.m3-skeleton-title {
  height: 18px;
  width: 140px;
  border-radius: var(--md-sys-shape-corner-extra-small);
  background-color: var(--md-sys-color-surface-container-highest);
  margin-bottom: 0.375rem;
}

.m3-skeleton-slug {
  height: 12px;
  width: 90px;
  border-radius: var(--md-sys-shape-corner-extra-small);
  background-color: var(--md-sys-color-surface-container-high);
}

.m3-skeleton-line {
  height: 14px;
  width: 100%;
  border-radius: var(--md-sys-shape-corner-extra-small);
  background-color: var(--md-sys-color-surface-container-highest);
  margin-bottom: 0.5rem;
}

.m3-skeleton-line.short {
  width: 65%;
}

.m3-skeleton-footer {
  margin-top: 1.5rem;
  padding-top: 0.875rem;
  border-top: 1px solid var(--md-sys-color-outline-variant);
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.m3-skeleton-badge {
  height: 20px;
  width: 70px;
  border-radius: var(--md-sys-shape-corner-small);
  background-color: var(--md-sys-color-surface-container-highest);
}

.m3-skeleton-shimmer {
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: linear-gradient(
    90deg,
    transparent 0%,
    rgba(255, 255, 255, 0.05) 50%,
    transparent 100%
  );
  animation: m3-shimmer 1.8s infinite;
}

@keyframes m3-shimmer {
  0% { transform: translateX(-100%); }
  100% { transform: translateX(100%); }
}

.m3-spinner {
  width: 32px;
  height: 32px;
  border: 3px solid var(--md-sys-color-surface-container-highest);
  border-top-color: var(--md-sys-color-primary);
  border-radius: var(--md-sys-shape-corner-full);
  animation: m3-spin 0.8s linear infinite;
  margin: 2rem auto;
}

@keyframes m3-spin {
  to { transform: rotate(360deg); }
}

/* ==========================================================================
   Badges & Chips (Tonal M3 Expressive)
   ========================================================================== */

.m3-chip {
  display: inline-flex;
  align-items: center;
  gap: 0.375rem;
  padding: 0.25rem 0.625rem;
  border-radius: var(--md-sys-shape-corner-small);
  font: var(--md-sys-typescale-label-small);
  font-weight: 600;
  text-transform: capitalize;
  user-select: none;
  white-space: nowrap;
}

.m3-chip-default {
  background-color: var(--md-sys-color-surface-container-high);
  color: var(--md-sys-color-on-surface-variant);
}

.m3-chip-primary {
  background-color: var(--md-sys-color-primary-container);
  color: var(--md-sys-color-on-primary-container);
}

.m3-chip-proposal {
  background-color: var(--md-sys-color-info-container);
  color: var(--md-sys-color-on-info-container);
}

.m3-chip-question {
  background-color: var(--md-sys-color-warning-container);
  color: var(--md-sys-color-on-warning-container);
}

.m3-chip-idea {
  background-color: var(--md-sys-color-success-container);
  color: var(--md-sys-color-on-success-container);
}

.m3-chip-decision {
  background-color: var(--md-sys-color-tertiary-container);
  color: var(--md-sys-color-on-tertiary-container);
}

.m3-chip-issue {
  background-color: var(--md-sys-color-error-container);
  color: var(--md-sys-color-on-error-container);
}

/* ==========================================================================
   Forms, Visual Selectors & Inputs
   ========================================================================== */

.m3-form-card {
  background-color: var(--md-sys-color-surface-container);
  border-radius: var(--md-sys-shape-corner-extra-large);
  border: 1px solid var(--md-sys-color-outline-subtle);
  padding: 1.75rem;
  max-width: 680px;
  margin: 0 auto;
}

@media (min-width: 600px) {
  .m3-form-card {
    padding: 2.25rem;
  }
}

.m3-field-group {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  margin-bottom: 1.5rem;
}

.m3-field-label {
  font: var(--md-sys-typescale-label-large);
  color: var(--md-sys-color-on-surface);
}

.m3-field-helper {
  font: var(--md-sys-typescale-body-small);
  color: var(--md-sys-color-on-surface-subtle);
}

.m3-text-field, .m3-select, .m3-textarea {
  width: 100%;
  min-height: 48px;
  background-color: var(--md-sys-color-surface-container-lowest);
  border: 1px solid var(--md-sys-color-outline);
  border-radius: var(--md-sys-shape-corner-medium);
  padding: 0.75rem 1rem;
  color: var(--md-sys-color-on-surface);
  font: var(--md-sys-typescale-body-medium);
  outline: none;
  transition: border-color var(--md-sys-motion-duration-short) ease,
              box-shadow var(--md-sys-motion-duration-short) ease;
}

.m3-text-field:focus, .m3-select:focus, .m3-textarea:focus {
  border-color: var(--md-sys-color-primary);
  box-shadow: 0 0 0 1px var(--md-sys-color-primary);
}

.m3-textarea {
  min-height: 120px;
  resize: vertical;
}

/* Visual Option Cards Grid for Templates & Visibility */
.m3-visual-options-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 0.75rem;
}

@media (min-width: 520px) {
  .m3-visual-options-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

.m3-option-card {
  position: relative;
  display: flex;
  align-items: flex-start;
  gap: 0.75rem;
  padding: 1rem;
  border-radius: var(--md-sys-shape-corner-medium);
  background-color: var(--md-sys-color-surface-container-low);
  border: 2px solid var(--md-sys-color-outline-subtle);
  cursor: pointer;
  user-select: none;
  transition: all var(--md-sys-motion-duration-short) ease;
  text-align: left;
}

.m3-visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

.m3-option-card:has(input:focus-visible) {
  outline: 2px solid var(--md-sys-color-primary);
  outline-offset: 2px;
  border-color: var(--md-sys-color-primary);
}

.m3-option-card:hover {
  background-color: var(--md-sys-color-surface-container-high);
  border-color: var(--md-sys-color-outline-variant);
}

.m3-option-card.selected {
  background-color: var(--md-sys-color-primary-container);
  border-color: var(--md-sys-color-primary);
  color: var(--md-sys-color-on-primary-container);
}

.m3-option-card-icon {
  font-size: 1.25rem;
  flex-shrink: 0;
  margin-top: 0.125rem;
}

.m3-option-card-title {
  font: var(--md-sys-typescale-title-small);
  color: inherit;
  margin-bottom: 0.125rem;
}

.m3-option-card-desc {
  font: var(--md-sys-typescale-body-small);
  color: var(--md-sys-color-on-surface-subtle);
  line-height: 1.35;
}

.m3-option-card.selected .m3-option-card-desc {
  color: var(--md-sys-color-on-primary-container);
  opacity: 0.9;
}

.m3-form-actions {
  display: flex;
  align-items: center;
  justify-content: flex-end;
  gap: 1rem;
  margin-top: 2rem;
  padding-top: 1.25rem;
  border-top: 1px solid var(--md-sys-color-outline-variant);
}

/* ==========================================================================
   Project Detail, Tabs & Discussions
   ========================================================================== */

.m3-detail-hero {
  background-color: var(--md-sys-color-surface-container);
  border: 1px solid var(--md-sys-color-outline-subtle);
  border-radius: var(--md-sys-shape-corner-extra-large);
  padding: 1.75rem;
  margin-bottom: 2rem;
}

@media (min-width: 600px) {
  .m3-detail-hero {
    padding: 2.25rem;
  }
}

.m3-detail-hero-header {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
  margin-bottom: 0.75rem;
}

@media (min-width: 600px) {
  .m3-detail-hero-header {
    flex-direction: row;
    justify-content: space-between;
    align-items: flex-start;
  }
}

.m3-detail-meta {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.75rem;
  font: var(--md-sys-typescale-code);
  font-size: 0.8125rem;
  color: var(--md-sys-color-on-surface-subtle);
  margin-top: 1rem;
}

.m3-copy-slug-btn {
  display: inline-flex;
  align-items: center;
  gap: 0.375rem;
  padding: 0.25rem 0.5rem;
  border-radius: var(--md-sys-shape-corner-small);
  border: 1px solid var(--md-sys-color-outline-variant);
  background-color: var(--md-sys-color-surface-container-low);
  color: var(--md-sys-color-on-surface-variant);
  font: var(--md-sys-typescale-code);
  font-size: 0.75rem;
  cursor: pointer;
  transition: all var(--md-sys-motion-duration-short) ease;
}

.m3-copy-slug-btn:hover {
  background-color: var(--md-sys-color-surface-container-high);
  color: var(--md-sys-color-on-surface);
}

/* Primary Tabs */
.m3-tabs {
  display: flex;
  gap: 0.5rem;
  border-bottom: 1px solid var(--md-sys-color-outline-variant);
  margin-bottom: 2rem;
  overflow-x: auto;
}

.m3-tab-item {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.875rem 1.25rem;
  border: none;
  background: transparent;
  font: var(--md-sys-typescale-title-small);
  color: var(--md-sys-color-on-surface-variant);
  cursor: pointer;
  position: relative;
  transition: color var(--md-sys-motion-duration-short) ease;
  white-space: nowrap;
}

.m3-tab-item:hover {
  color: var(--md-sys-color-on-surface);
}

.m3-tab-item.active {
  color: var(--md-sys-color-primary);
  font-weight: 700;
}

.m3-tab-item.active::after {
  content: '';
  position: absolute;
  bottom: -1px;
  left: 0;
  right: 0;
  height: 3px;
  background-color: var(--md-sys-color-primary);
  border-radius: var(--md-sys-shape-corner-full) var(--md-sys-shape-corner-full) 0 0;
}

/* Discussion List & Item */
.m3-discussion-list {
  display: flex;
  flex-direction: column;
  gap: 0.875rem;
}

.m3-discussion-item {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  background-color: var(--md-sys-color-surface-container);
  border: 1px solid var(--md-sys-color-outline-subtle);
  border-radius: var(--md-sys-shape-corner-large);
  padding: 1.25rem 1.5rem;
  text-decoration: none;
  transition: transform var(--md-sys-motion-duration-short) ease,
              background-color var(--md-sys-motion-duration-short) ease,
              border-color var(--md-sys-motion-duration-short) ease;
}

.m3-discussion-item:hover {
  background-color: var(--md-sys-color-surface-container-high);
  border-color: var(--md-sys-color-outline-variant);
  transform: translateY(-2px);
}

.m3-discussion-title {
  font: var(--md-sys-typescale-title-medium);
  color: var(--md-sys-color-on-surface);
  margin-bottom: 0.25rem;
}

.m3-discussion-meta {
  font: var(--md-sys-typescale-body-small);
  color: var(--md-sys-color-on-surface-subtle);
}

/* Messages & Conversation Thread */
.m3-thread-container {
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
}

.m3-card-surface {
  background-color: var(--md-sys-color-surface-container);
  border: 1px solid var(--md-sys-color-outline-subtle);
  border-radius: var(--md-sys-shape-corner-extra-large);
  padding: 1.5rem;
}

@media (min-width: 600px) {
  .m3-card-surface {
    padding: 2rem;
  }
}

.m3-message-list {
  display: flex;
  flex-direction: column;
  gap: 1rem;
  margin-bottom: 2rem;
}

.m3-message-bubble {
  display: flex;
  gap: 1rem;
  background-color: var(--md-sys-color-surface-container-low);
  border: 1px solid var(--md-sys-color-outline-subtle);
  border-radius: var(--md-sys-shape-corner-large);
  padding: 1.25rem;
}

.m3-message-avatar {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 38px;
  height: 38px;
  border-radius: var(--md-sys-shape-corner-full);
  background-color: var(--md-sys-color-primary-container);
  color: var(--md-sys-color-on-primary-container);
  font: var(--md-sys-typescale-label-large);
  font-weight: 700;
  flex-shrink: 0;
  user-select: none;
}

.m3-message-body-wrap {
  flex: 1;
  min-width: 0;
}

.m3-message-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 0.375rem;
}

.m3-message-author {
  font: var(--md-sys-typescale-label-large);
  color: var(--md-sys-color-on-surface);
}

.m3-message-time {
  font: var(--md-sys-typescale-body-small);
  color: var(--md-sys-color-on-surface-subtle);
}

.m3-message-content {
  font: var(--md-sys-typescale-body-medium);
  color: var(--md-sys-color-on-surface);
  white-space: pre-wrap;
  word-break: break-word;
  line-height: 1.5;
}

.m3-composer-shortcut-hint {
  font: var(--md-sys-typescale-body-small);
  color: var(--md-sys-color-on-surface-subtle);
  display: none;
}

@media (min-width: 600px) {
  .m3-composer-shortcut-hint {
    display: inline-block;
  }
}

/* Banner Error & Success */
.m3-banner-error {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  background-color: var(--md-sys-color-error-container);
  color: var(--md-sys-color-on-error-container);
  border-radius: var(--md-sys-shape-corner-medium);
  padding: 1rem 1.25rem;
  margin-bottom: 1.5rem;
  font: var(--md-sys-typescale-body-medium);
}

.m3-banner-success {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  background-color: var(--md-sys-color-success-container);
  color: var(--md-sys-color-on-success-container);
  border-radius: var(--md-sys-shape-corner-medium);
  padding: 0.75rem 1.25rem;
  margin-bottom: 1rem;
  font: var(--md-sys-typescale-body-medium);
}

/* ==========================================================================
   Outline & Document Editor Components
   ========================================================================== */

.m3-outline-layout {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.5rem;
  align-items: start;
}

@media (min-width: 840px) {
  .m3-outline-layout {
    grid-template-columns: 320px 1fr;
  }
}

.m3-outline-sidebar {
  display: flex;
  flex-direction: column;
  gap: 1rem;
  background-color: var(--md-sys-color-surface-container);
  border: 1px solid var(--md-sys-color-outline-subtle);
  border-radius: var(--md-sys-shape-corner-extra-large);
  padding: 1.25rem;
}

.m3-outline-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.75rem;
  padding-bottom: 0.75rem;
  border-bottom: 1px solid var(--md-sys-color-outline-variant);
}

.m3-outline-title {
  font: var(--md-sys-typescale-title-large);
  color: var(--md-sys-color-on-surface);
}

.m3-outline-list {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  max-height: calc(100vh - 280px);
  overflow-y: auto;
}

.m3-outline-item {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.75rem;
  padding: 0.75rem 1rem;
  border-radius: var(--md-sys-shape-corner-medium);
  background-color: var(--md-sys-color-surface-container-low);
  border: 1px solid var(--md-sys-color-outline-subtle);
  color: var(--md-sys-color-on-surface);
  cursor: pointer;
  text-align: left;
  transition: all var(--md-sys-motion-duration-short) ease;
  width: 100%;
}

.m3-outline-item:hover {
  background-color: var(--md-sys-color-surface-container-high);
  border-color: var(--md-sys-color-outline-variant);
}

.m3-outline-item.active {
  background-color: var(--md-sys-color-primary-container);
  border-color: var(--md-sys-color-primary);
  color: var(--md-sys-color-on-primary-container);
  font-weight: 600;
}

.m3-outline-item-title {
  font: var(--md-sys-typescale-body-medium);
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  flex: 1;
}

.m3-outline-empty-card {
  text-align: center;
  padding: 2.5rem 1.25rem;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.75rem;
  background-color: var(--md-sys-color-surface-container-low);
  border: 1px dashed var(--md-sys-color-outline-variant);
  border-radius: var(--md-sys-shape-corner-large);
}

.m3-outline-empty-title {
  font: var(--md-sys-typescale-title-medium);
  color: var(--md-sys-color-on-surface);
}

.m3-outline-empty-desc {
  font: var(--md-sys-typescale-body-small);
  color: var(--md-sys-color-on-surface-subtle);
  margin-bottom: 0.5rem;
}

/* Document Editor Card */
.m3-doc-editor-card {
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
  background-color: var(--md-sys-color-surface-container);
  border: 1px solid var(--md-sys-color-outline-subtle);
  border-radius: var(--md-sys-shape-corner-extra-large);
  padding: 1.5rem;
}

@media (min-width: 600px) {
  .m3-doc-editor-card {
    padding: 2rem;
  }
}

.m3-doc-editor-header {
  display: flex;
  flex-direction: column;
  gap: 1rem;
  padding-bottom: 1.25rem;
  border-bottom: 1px solid var(--md-sys-color-outline-variant);
}

.m3-doc-editor-header-top {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 0.75rem;
}

.m3-doc-editor-meta {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.75rem;
  font: var(--md-sys-typescale-code);
  font-size: 0.75rem;
  color: var(--md-sys-color-on-surface-subtle);
}

.m3-doc-title-input {
  width: 100%;
  font: var(--md-sys-typescale-headline-small);
  background-color: var(--md-sys-color-surface-container-lowest);
  border: 1px solid var(--md-sys-color-outline);
  border-radius: var(--md-sys-shape-corner-medium);
  padding: 0.75rem 1rem;
  color: var(--md-sys-color-on-surface);
  outline: none;
  transition: border-color var(--md-sys-motion-duration-short) ease,
              box-shadow var(--md-sys-motion-duration-short) ease;
}

.m3-doc-title-input:focus {
  border-color: var(--md-sys-color-primary);
  box-shadow: 0 0 0 1px var(--md-sys-color-primary);
}

.m3-doc-content-textarea {
  width: 100%;
  min-height: 420px;
  font-family: var(--md-sys-font-sans);
  font-size: 0.9375rem;
  line-height: 1.6;
  background-color: var(--md-sys-color-surface-container-lowest);
  border: 1px solid var(--md-sys-color-outline);
  border-radius: var(--md-sys-shape-corner-medium);
  padding: 1rem 1.25rem;
  color: var(--md-sys-color-on-surface);
  outline: none;
  resize: vertical;
  tab-size: 4;
  white-space: pre-wrap;
  transition: border-color var(--md-sys-motion-duration-short) ease,
              box-shadow var(--md-sys-motion-duration-short) ease;
}

.m3-doc-content-textarea:focus {
  border-color: var(--md-sys-color-primary);
  box-shadow: 0 0 0 1px var(--md-sys-color-primary);
}

.m3-doc-editor-actions {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding-top: 0.75rem;
}

/* ==========================================================================
   M3 Dialog & Modal Components
   ========================================================================== */

.m3-dialog-scrim {
  position: fixed;
  inset: 0;
  background-color: rgba(0, 0, 0, 0.6);
  backdrop-filter: blur(4px);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 1000;
  padding: 1rem;
  animation: m3-fade-in 150ms ease-out;
}

@keyframes m3-fade-in {
  from { opacity: 0; }
  to { opacity: 1; }
}

.m3-dialog-card {
  background-color: var(--md-sys-color-surface-container-high);
  border: 1px solid var(--md-sys-color-outline-subtle);
  border-radius: var(--md-sys-shape-corner-extra-large);
  box-shadow: var(--md-sys-elevation-3);
  width: 100%;
  max-width: 440px;
  padding: 1.75rem;
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  animation: m3-scale-in 150ms cubic-bezier(0.2, 0, 0, 1);
}

@keyframes m3-scale-in {
  from { transform: scale(0.94); opacity: 0; }
  to { transform: scale(1); opacity: 1; }
}

.m3-dialog-icon-container {
  width: 48px;
  height: 48px;
  border-radius: var(--md-sys-shape-corner-full);
  background-color: var(--md-sys-color-error-container);
  color: var(--md-sys-color-on-error-container);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 1rem;
}

.m3-dialog-title {
  font: var(--md-sys-typescale-title-large);
  color: var(--md-sys-color-on-surface);
  margin-bottom: 0.5rem;
}

.m3-dialog-desc {
  font: var(--md-sys-typescale-body-medium);
  color: var(--md-sys-color-on-surface-subtle);
  margin-bottom: 1.5rem;
  line-height: 1.45;
}

.m3-dialog-actions {
  display: flex;
  justify-content: flex-end;
  gap: 0.75rem;
  width: 100%;
}

.m3-btn-danger {
  background-color: var(--md-sys-color-error) !important;
  color: var(--md-sys-color-on-error) !important;
}

.m3-btn-danger:hover {
  background-color: color-mix(in srgb, var(--md-sys-color-error) 82%, black) !important;
}

/* ==========================================================================
   Account Menu & Language Affordance
   ========================================================================== */

.m3-account-menu-container {
  position: relative;
  display: inline-block;
}

.m3-account-button {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  background: none;
  border: 1px solid transparent;
  border-radius: var(--md-sys-shape-corner-full);
  padding: 0.25rem 0.5rem 0.25rem 0.25rem;
  cursor: pointer;
  color: var(--md-sys-color-on-surface);
  transition: all var(--md-sys-motion-duration-short) ease;
}

.m3-account-button:hover {
  background-color: var(--md-sys-color-surface-container);
  border-color: var(--md-sys-color-outline-subtle);
}

.m3-account-button:focus-visible {
  outline: 2px solid var(--md-sys-color-primary);
  outline-offset: 2px;
}

.m3-user-name-compact {
  display: none;
  font: var(--md-sys-typescale-label-large);
  font-weight: 600;
}

@media (min-width: 640px) {
  .m3-user-name-compact {
    display: inline-block;
  }
}

.m3-account-menu {
  position: absolute;
  top: calc(100% + 0.5rem);
  right: 0;
  width: 260px;
  background-color: var(--md-sys-color-surface-container-high);
  border: 1px solid var(--md-sys-color-outline-subtle);
  border-radius: var(--md-sys-shape-corner-large);
  box-shadow: var(--md-sys-elevation-2);
  padding: 0.5rem;
  z-index: 500;
  animation: m3-fade-in 100ms ease-out;
  display: flex;
  flex-direction: column;
}

.m3-account-menu-header {
  padding: 0.75rem 0.75rem 0.5rem;
  display: flex;
  flex-direction: column;
  gap: 0.125rem;
}

.m3-menu-user-name {
  font: var(--md-sys-typescale-title-small);
  color: var(--md-sys-color-on-surface);
  font-weight: 700;
}

.m3-menu-user-id {
  font: var(--md-sys-typescale-body-small);
  color: var(--md-sys-color-on-surface-subtle);
  font-family: var(--md-sys-font-code);
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.m3-menu-divider {
  height: 1px;
  background-color: var(--md-sys-color-outline-subtle);
  margin: 0.375rem 0;
}

.m3-account-menu-item {
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: 100%;
  padding: 0.625rem 0.75rem;
  background: none;
  border: none;
  border-radius: var(--md-sys-shape-corner-medium);
  color: var(--md-sys-color-on-surface);
  font: var(--md-sys-typescale-label-large);
  text-align: left;
  cursor: pointer;
  transition: background-color var(--md-sys-motion-duration-short) ease;
}

.m3-account-menu-item:hover {
  background-color: var(--md-sys-color-surface-container-highest);
}

.m3-account-menu-item.danger {
  color: var(--md-sys-color-error);
}

.m3-account-menu-item.danger:hover {
  background-color: var(--md-sys-color-error-container);
  color: var(--md-sys-color-on-error-container);
}

.m3-lang-btn {
  display: flex;
  align-items: center;
  gap: 0.375rem;
  background: none;
  border: 1px solid var(--md-sys-color-outline-subtle);
  border-radius: var(--md-sys-shape-corner-full);
  padding: 0.375rem 0.625rem;
  color: var(--md-sys-color-on-surface);
  font: var(--md-sys-typescale-label-medium);
  font-weight: 600;
  cursor: pointer;
  transition: all var(--md-sys-motion-duration-short) ease;
}

.m3-lang-btn:hover {
  background-color: var(--md-sys-color-surface-container);
  border-color: var(--md-sys-color-primary);
}

.m3-lang-btn:focus-visible {
  outline: 2px solid var(--md-sys-color-primary);
  outline-offset: 2px;
}