/* ==========================================================================
   Google Material Design 3 (M3) & M3 Expressive — Design Tokens
   Color Roles (Light/Dark + Material You Dynamic Seeds), Typography,
   Shape Scale, Elevation Hierarchy, 4px Grid Spacing & Motion Easing
   ========================================================================== */

:root,
[data-theme="light"] {
  color-scheme: light;

  /* --- M3 Color Roles (Default Seed: Google Blue — Light Theme) --- */
  --md-sys-color-primary: #0b57d0;
  --md-sys-color-on-primary: #ffffff;
  --md-sys-color-primary-container: #d3e3fd;
  --md-sys-color-on-primary-container: #041e49;

  --md-sys-color-secondary: #00639b;
  --md-sys-color-on-secondary: #ffffff;
  --md-sys-color-secondary-container: #c2e7ff;
  --md-sys-color-on-secondary-container: #001d35;

  --md-sys-color-tertiary: #146c2e;
  --md-sys-color-on-tertiary: #ffffff;
  --md-sys-color-tertiary-container: #c4eed0;
  --md-sys-color-on-tertiary-container: #072711;

  --md-sys-color-error: #b3261e;
  --md-sys-color-on-error: #ffffff;
  --md-sys-color-error-container: #f9dedc;
  --md-sys-color-on-error-container: #410e0b;

  --md-sys-color-surface: #f8fafd;
  --md-sys-color-surface-dim: #d8dae0;
  --md-sys-color-surface-bright: #ffffff;
  --md-sys-color-surface-container-lowest: #ffffff;
  --md-sys-color-surface-container-low: #f0f4f9;
  --md-sys-color-surface-container: #e9eef6;
  --md-sys-color-surface-container-high: #dde3ea;
  --md-sys-color-surface-container-highest: #d3d8e0;

  --md-sys-color-on-surface: #1f1f1f;
  --md-sys-color-on-surface-variant: #444746;

  --md-sys-color-outline: #747775;
  --md-sys-color-outline-variant: #c4c7c5;

  --md-sys-color-inverse-surface: #303030;
  --md-sys-color-inverse-on-surface: #f2f2f2;
  --md-sys-color-inverse-primary: #a8c7fa;

  --md-sys-color-scrim: rgba(0, 0, 0, 0.45);
  --md-sys-color-shadow: rgba(0, 0, 0, 0.18);

  /* Semantic Status Extensions mapped to M3 Roles */
  --md-sys-color-success: var(--md-sys-color-tertiary);
  --md-sys-color-on-success: var(--md-sys-color-on-tertiary);
  --md-sys-color-success-container: var(--md-sys-color-tertiary-container);
  --md-sys-color-on-success-container: var(--md-sys-color-on-tertiary-container);

  --md-sys-color-warning: #b06000;
  --md-sys-color-on-warning: #ffffff;
  --md-sys-color-warning-container: #ffdfbe;
  --md-sys-color-on-warning-container: #381c00;

  /* State Layer Opacities */
  --md-sys-state-hover-opacity: 0.08;
  --md-sys-state-focus-opacity: 0.12;
  --md-sys-state-pressed-opacity: 0.12;
  --md-sys-state-dragged-opacity: 0.16;

  /* M3 Elevation Levels (Surface Tint + Ambient/Key Shadows) */
  --md-sys-elevation-0: none;
  --md-sys-elevation-1: 0 1px 2px 0 rgba(0, 0, 0, 0.12), 0 1px 3px 1px rgba(11, 87, 208, 0.06);
  --md-sys-elevation-2: 0 1px 2px 0 rgba(0, 0, 0, 0.15), 0 2px 6px 2px rgba(11, 87, 208, 0.08);
  --md-sys-elevation-3: 0 4px 8px 3px rgba(0, 0, 0, 0.10), 0 1px 3px 0 rgba(0, 0, 0, 0.18);
  --md-sys-elevation-4: 0 6px 10px 4px rgba(0, 0, 0, 0.12), 0 2px 3px 0 rgba(0, 0, 0, 0.20);
  --md-sys-elevation-5: 0 8px 12px 6px rgba(0, 0, 0, 0.14), 0 4px 4px 0 rgba(0, 0, 0, 0.22);

  --md-sys-elevation-level0: var(--md-sys-elevation-0);
  --md-sys-elevation-level1: var(--md-sys-elevation-1);
  --md-sys-elevation-level2: var(--md-sys-elevation-2);
  --md-sys-elevation-level3: var(--md-sys-elevation-3);
  --md-sys-elevation-level4: var(--md-sys-elevation-4);
  --md-sys-elevation-level5: var(--md-sys-elevation-5);
}

[data-theme="dark"] {
  color-scheme: dark;

  /* --- M3 Color Roles (Default Seed: Google Blue — Dark Theme) --- */
  --md-sys-color-primary: #a8c7fa;
  --md-sys-color-on-primary: #062e6f;
  --md-sys-color-primary-container: #0842a0;
  --md-sys-color-on-primary-container: #d3e3fd;

  --md-sys-color-secondary: #7fcfff;
  --md-sys-color-on-secondary: #003355;
  --md-sys-color-secondary-container: #004a77;
  --md-sys-color-on-secondary-container: #c2e7ff;

  --md-sys-color-tertiary: #6dd58c;
  --md-sys-color-on-tertiary: #0a3818;
  --md-sys-color-tertiary-container: #0f5223;
  --md-sys-color-on-tertiary-container: #c4eed0;

  --md-sys-color-error: #f2b8b5;
  --md-sys-color-on-error: #601410;
  --md-sys-color-error-container: #8c1d18;
  --md-sys-color-on-error-container: #f9dedc;

  --md-sys-color-surface: #131314;
  --md-sys-color-surface-dim: #131314;
  --md-sys-color-surface-bright: #37393b;
  --md-sys-color-surface-container-lowest: #0e0e0f;
  --md-sys-color-surface-container-low: #1b1b1f;
  --md-sys-color-surface-container: #1e1f20;
  --md-sys-color-surface-container-high: #282a2c;
  --md-sys-color-surface-container-highest: #333537;

  --md-sys-color-on-surface: #e3e3e3;
  --md-sys-color-on-surface-variant: #c4c7c5;

  --md-sys-color-outline: #8e918f;
  --md-sys-color-outline-variant: #444746;

  --md-sys-color-inverse-surface: #e3e3e3;
  --md-sys-color-inverse-on-surface: #303030;
  --md-sys-color-inverse-primary: #0b57d0;

  --md-sys-color-scrim: rgba(0, 0, 0, 0.68);
  --md-sys-color-shadow: rgba(0, 0, 0, 0.55);

  --md-sys-color-success: var(--md-sys-color-tertiary);
  --md-sys-color-on-success: var(--md-sys-color-on-tertiary);
  --md-sys-color-success-container: var(--md-sys-color-tertiary-container);
  --md-sys-color-on-success-container: var(--md-sys-color-on-tertiary-container);

  --md-sys-color-warning: #ffb95f;
  --md-sys-color-on-warning: #462a00;
  --md-sys-color-warning-container: #653e00;
  --md-sys-color-on-warning-container: #ffdfbe;

  --md-sys-elevation-0: none;
  --md-sys-elevation-1: 0 1px 3px 1px rgba(0, 0, 0, 0.35), 0 1px 2px 0 rgba(0, 0, 0, 0.45);
  --md-sys-elevation-2: 0 2px 6px 2px rgba(0, 0, 0, 0.40), 0 1px 2px 0 rgba(0, 0, 0, 0.50);
  --md-sys-elevation-3: 0 4px 8px 3px rgba(0, 0, 0, 0.45), 0 1px 3px 0 rgba(0, 0, 0, 0.55);
  --md-sys-elevation-4: 0 6px 10px 4px rgba(0, 0, 0, 0.48), 0 2px 3px 0 rgba(0, 0, 0, 0.55);
  --md-sys-elevation-5: 0 8px 12px 6px rgba(0, 0, 0, 0.52), 0 4px 4px 0 rgba(0, 0, 0, 0.60);

  --md-sys-elevation-level0: var(--md-sys-elevation-0);
  --md-sys-elevation-level1: var(--md-sys-elevation-1);
  --md-sys-elevation-level2: var(--md-sys-elevation-2);
  --md-sys-elevation-level3: var(--md-sys-elevation-3);
  --md-sys-elevation-level4: var(--md-sys-elevation-4);
  --md-sys-elevation-level5: var(--md-sys-elevation-5);
}

/* --- Material You Dynamic Color Seeds (Emerald, Violet, Rose, Amber) --- */
[data-seed="emerald"]:not([data-theme="dark"]) {
  --md-sys-color-primary: #006c4c;
  --md-sys-color-on-primary: #ffffff;
  --md-sys-color-primary-container: #89f8c7;
  --md-sys-color-on-primary-container: #002114;
  --md-sys-color-secondary: #4d6357;
  --md-sys-color-on-secondary: #ffffff;
  --md-sys-color-secondary-container: #cfe9d9;
  --md-sys-color-on-secondary-container: #092016;
  --md-sys-color-surface: #f5fbf7;
  --md-sys-color-surface-container-low: #eff5f1;
  --md-sys-color-surface-container: #e9efeb;
  --md-sys-color-surface-container-high: #e3eae5;
  --md-sys-color-surface-container-highest: #dde4df;
}
[data-seed="emerald"][data-theme="dark"] {
  --md-sys-color-primary: #6cdbAC;
  --md-sys-color-on-primary: #003826;
  --md-sys-color-primary-container: #005138;
  --md-sys-color-on-primary-container: #89f8c7;
  --md-sys-color-secondary: #b3ccbe;
  --md-sys-color-on-secondary: #1f352a;
  --md-sys-color-secondary-container: #354b40;
  --md-sys-color-on-secondary-container: #cfe9d9;
}

[data-seed="violet"]:not([data-theme="dark"]) {
  --md-sys-color-primary: #6750a4;
  --md-sys-color-on-primary: #ffffff;
  --md-sys-color-primary-container: #eaddff;
  --md-sys-color-on-primary-container: #21005d;
  --md-sys-color-secondary: #625b71;
  --md-sys-color-on-secondary: #ffffff;
  --md-sys-color-secondary-container: #e8def8;
  --md-sys-color-on-secondary-container: #1d192b;
  --md-sys-color-surface: #fef7ff;
  --md-sys-color-surface-container-low: #f7f2fa;
  --md-sys-color-surface-container: #f3edf7;
  --md-sys-color-surface-container-high: #ece6f0;
  --md-sys-color-surface-container-highest: #e6e0e9;
}
[data-seed="violet"][data-theme="dark"] {
  --md-sys-color-primary: #d0bcff;
  --md-sys-color-on-primary: #381e72;
  --md-sys-color-primary-container: #4f378b;
  --md-sys-color-on-primary-container: #eaddff;
  --md-sys-color-secondary: #ccc2dc;
  --md-sys-color-on-secondary: #332d41;
  --md-sys-color-secondary-container: #4a4458;
  --md-sys-color-on-secondary-container: #e8def8;
}

[data-seed="rose"]:not([data-theme="dark"]) {
  --md-sys-color-primary: #984061;
  --md-sys-color-on-primary: #ffffff;
  --md-sys-color-primary-container: #ffd9e2;
  --md-sys-color-on-primary-container: #3e001d;
  --md-sys-color-secondary: #74565f;
  --md-sys-color-on-secondary: #ffffff;
  --md-sys-color-secondary-container: #ffd9e2;
  --md-sys-color-on-secondary-container: #2b151c;
  --md-sys-color-surface: #fff8f8;
  --md-sys-color-surface-container-low: #fff0f3;
  --md-sys-color-surface-container: #f8eaed;
  --md-sys-color-surface-container-high: #f2e4e7;
  --md-sys-color-surface-container-highest: #ece0e1;
}
[data-seed="rose"][data-theme="dark"] {
  --md-sys-color-primary: #ffb0c8;
  --md-sys-color-on-primary: #5e1133;
  --md-sys-color-primary-container: #7b2949;
  --md-sys-color-on-primary-container: #ffd9e2;
  --md-sys-color-secondary: #e3bdc6;
  --md-sys-color-on-secondary: #422931;
  --md-sys-color-secondary-container: #5a3f47;
  --md-sys-color-on-secondary-container: #ffd9e2;
}

[data-seed="amber"]:not([data-theme="dark"]) {
  --md-sys-color-primary: #825500;
  --md-sys-color-on-primary: #ffffff;
  --md-sys-color-primary-container: #ffddb3;
  --md-sys-color-on-primary-container: #291800;
  --md-sys-color-secondary: #6f5b40;
  --md-sys-color-on-secondary: #ffffff;
  --md-sys-color-secondary-container: #fbdebc;
  --md-sys-color-on-secondary-container: #271904;
}
[data-seed="amber"][data-theme="dark"] {
  --md-sys-color-primary: #ffb951;
  --md-sys-color-on-primary: #452b00;
  --md-sys-color-primary-container: #633f00;
  --md-sys-color-on-primary-container: #ffddb3;
  --md-sys-color-secondary: #dec2a2;
  --md-sys-color-on-secondary: #3e2d16;
  --md-sys-color-secondary-container: #56442a;
  --md-sys-color-on-secondary-container: #fbdebc;
}

/* --- M3 Typography Scale, Shape Scale, Spacing (4px Grid) & Motion Tokens --- */
:root {
  --md-sys-typescale-font-brand: "Google Sans", "Inter", "Plus Jakarta Sans", "Noto Sans JP", "IPAPGothic", "IPAGothic", "Hiragino Sans", "Hiragino Kaku Gothic ProN", "Yu Gothic UI", "Meiryo", system-ui, -apple-system, sans-serif;
  --md-sys-typescale-font-plain: "Roboto", "Inter", "Noto Sans JP", "IPAPGothic", "IPAGothic", "Hiragino Sans", "Hiragino Kaku Gothic ProN", "Yu Gothic UI", "Meiryo", system-ui, -apple-system, sans-serif;
  --md-sys-typescale-font-mono: "Roboto Mono", "JetBrains Mono", ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;

  /* M3 Shape Scale */
  --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: 28px;
  --md-sys-shape-corner-full: 9999px;

  /* M3 4px Spacing System (Both --md-space-* and --md-sys-spacing-* aliases) */
  --md-space-0: 0px;
  --md-space-1: 4px;
  --md-space-2: 8px;
  --md-space-3: 12px;
  --md-space-4: 16px;
  --md-space-5: 20px;
  --md-space-6: 24px;
  --md-space-7: 28px;
  --md-space-8: 32px;
  --md-space-10: 40px;
  --md-space-12: 48px;
  --md-space-14: 56px;
  --md-space-16: 64px;

  --md-sys-spacing-0: 0px;
  --md-sys-spacing-1: 4px;
  --md-sys-spacing-2: 8px;
  --md-sys-spacing-3: 12px;
  --md-sys-spacing-4: 16px;
  --md-sys-spacing-5: 20px;
  --md-sys-spacing-6: 24px;
  --md-sys-spacing-7: 28px;
  --md-sys-spacing-8: 32px;
  --md-sys-spacing-10: 40px;
  --md-sys-spacing-12: 48px;
  --md-sys-spacing-14: 56px;
  --md-sys-spacing-16: 64px;

  /* M3 Motion Easing & Duration */
  --md-sys-motion-easing-emphasized: cubic-bezier(0.2, 0, 0, 1);
  --md-sys-motion-easing-emphasized-decelerate: cubic-bezier(0.05, 0.7, 0.1, 1);
  --md-sys-motion-easing-emphasized-accelerate: cubic-bezier(0.3, 0, 0.8, 0.15);
  --md-sys-motion-easing-standard: cubic-bezier(0.2, 0, 0, 1);
  --md-sys-motion-duration-short1: 100ms;
  --md-sys-motion-duration-short2: 150ms;
  --md-sys-motion-duration-medium1: 250ms;
  --md-sys-motion-duration-medium2: 300ms;
  --md-sys-motion-duration-long1: 400ms;
}

/* --- M3 Typography Scale Classes (All 15 Roles) --- */
.md-typescale-display-large {
  font-family: var(--md-sys-typescale-font-brand);
  font-size: clamp(2.5rem, 4.5vw, 3.5625rem);
  line-height: 1.12;
  font-weight: 400;
  letter-spacing: -0.25px;
}
.md-typescale-display-medium {
  font-family: var(--md-sys-typescale-font-brand);
  font-size: clamp(2.125rem, 3.6vw, 2.8125rem);
  line-height: 1.15;
  font-weight: 400;
  letter-spacing: 0px;
}
.md-typescale-display-small {
  font-family: var(--md-sys-typescale-font-brand);
  font-size: clamp(1.75rem, 3vw, 2.25rem);
  line-height: 1.22;
  font-weight: 400;
  letter-spacing: 0px;
}
.md-typescale-headline-large {
  font-family: var(--md-sys-typescale-font-brand);
  font-size: clamp(1.625rem, 2.5vw, 2rem);
  line-height: 1.25;
  font-weight: 600;
  letter-spacing: 0px;
}
.md-typescale-headline-medium {
  font-family: var(--md-sys-typescale-font-brand);
  font-size: clamp(1.4rem, 2.2vw, 1.75rem);
  line-height: 1.28;
  font-weight: 600;
  letter-spacing: 0px;
}
.md-typescale-headline-small {
  font-family: var(--md-sys-typescale-font-brand);
  font-size: 1.5rem;
  line-height: 1.33;
  font-weight: 600;
  letter-spacing: 0px;
}
.md-typescale-title-large {
  font-family: var(--md-sys-typescale-font-brand);
  font-size: 1.375rem;
  line-height: 1.27;
  font-weight: 600;
  letter-spacing: 0px;
}
.md-typescale-title-medium {
  font-family: var(--md-sys-typescale-font-plain);
  font-size: 1rem;
  line-height: 1.5;
  font-weight: 600;
  letter-spacing: 0.15px;
}
.md-typescale-title-small {
  font-family: var(--md-sys-typescale-font-plain);
  font-size: 0.875rem;
  line-height: 1.43;
  font-weight: 600;
  letter-spacing: 0.1px;
}
.md-typescale-body-large {
  font-family: var(--md-sys-typescale-font-plain);
  font-size: 1rem;
  line-height: 1.5;
  font-weight: 400;
  letter-spacing: 0.5px;
}
.md-typescale-body-medium {
  font-family: var(--md-sys-typescale-font-plain);
  font-size: 0.875rem;
  line-height: 1.43;
  font-weight: 400;
  letter-spacing: 0.25px;
}
.md-typescale-body-small {
  font-family: var(--md-sys-typescale-font-plain);
  font-size: 0.75rem;
  line-height: 1.33;
  font-weight: 400;
  letter-spacing: 0.4px;
}
.md-typescale-label-large {
  font-family: var(--md-sys-typescale-font-plain);
  font-size: 0.875rem;
  line-height: 1.43;
  font-weight: 600;
  letter-spacing: 0.1px;
}
.md-typescale-label-medium {
  font-family: var(--md-sys-typescale-font-plain);
  font-size: 0.75rem;
  line-height: 1.33;
  font-weight: 600;
  letter-spacing: 0.5px;
}
.md-typescale-label-small {
  font-family: var(--md-sys-typescale-font-plain);
  font-size: 0.6875rem;
  line-height: 1.45;
  font-weight: 600;
  letter-spacing: 0.5px;
}


/* ==========================================================================
   Google Material Design 3 (M3) & M3 Expressive — Common UI Components
   Buttons, Inputs, Cards, Lists, Navigation, App Bars, Tabs, Dialogs,
   Snackbar, Tooltip, Badge, Chip, Progress, Divider, Menu, Bottom Sheet,
   Data Table, States & WCAG 2.2 AA Accessibility
   ========================================================================== */

/* --- 1. Buttons (Filled, Filled Tonal, Outlined, Text, Elevated, Icon, Segmented) --- */
.md-btn {
  position: relative;
  overflow: hidden;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--md-space-2);
  min-height: 40px;
  padding: 0 var(--md-space-6);
  border-radius: var(--md-sys-shape-corner-full);
  font-family: var(--md-sys-typescale-font-plain);
  font-size: 0.875rem;
  font-weight: 600;
  letter-spacing: 0.1px;
  text-decoration: none;
  cursor: pointer;
  border: 1px solid transparent;
  user-select: none;
  white-space: nowrap;
  transition:
    background-color var(--md-sys-motion-duration-short2) var(--md-sys-motion-easing-standard),
    color var(--md-sys-motion-duration-short2) var(--md-sys-motion-easing-standard),
    border-color var(--md-sys-motion-duration-short2) var(--md-sys-motion-easing-standard),
    box-shadow var(--md-sys-motion-duration-short2) var(--md-sys-motion-easing-standard),
    transform var(--md-sys-motion-duration-short1) var(--md-sys-motion-easing-standard);
}
.md-btn:focus-visible {
  outline: 2px solid var(--md-sys-color-primary);
  outline-offset: 2px;
}
.md-btn:active:not(:disabled) {
  transform: scale(0.98);
}
.md-btn:disabled,
.md-btn[aria-disabled="true"],
.md-btn.is-disabled {
  opacity: 0.38;
  cursor: not-allowed;
  pointer-events: none;
  box-shadow: none;
}
.md-btn.is-loading {
  pointer-events: none;
  opacity: 0.85;
}
.md-btn.is-loading::before {
  content: "";
  width: 16px;
  height: 16px;
  border: 2px solid currentColor;
  border-right-color: transparent;
  border-radius: 50%;
  animation: md-spin 0.75s linear infinite;
}
@keyframes md-spin {
  to { transform: rotate(360deg); }
}

.md-btn-filled {
  background-color: var(--md-sys-color-primary);
  color: var(--md-sys-color-on-primary);
}
.md-btn-filled:hover:not(:disabled) {
  box-shadow: var(--md-sys-elevation-1);
  filter: brightness(1.06);
}

.md-btn-tonal {
  background-color: var(--md-sys-color-secondary-container);
  color: var(--md-sys-color-on-secondary-container);
}
.md-btn-tonal:hover:not(:disabled) {
  box-shadow: var(--md-sys-elevation-1);
  background-color: var(--md-sys-color-primary-container);
  color: var(--md-sys-color-on-primary-container);
}

.md-btn-outlined {
  background-color: transparent;
  color: var(--md-sys-color-primary);
  border-color: var(--md-sys-color-outline);
}
.md-btn-outlined:hover:not(:disabled) {
  background-color: var(--md-sys-color-surface-container-high);
  border-color: var(--md-sys-color-primary);
}

.md-btn-text {
  background-color: transparent;
  color: var(--md-sys-color-primary);
  padding: 0 var(--md-space-3);
}
.md-btn-text:hover:not(:disabled) {
  background-color: var(--md-sys-color-surface-container-high);
}

.md-btn-elevated {
  background-color: var(--md-sys-color-surface-container-low);
  color: var(--md-sys-color-primary);
  box-shadow: var(--md-sys-elevation-1);
}
.md-btn-elevated:hover:not(:disabled) {
  background-color: var(--md-sys-color-surface-container);
  box-shadow: var(--md-sys-elevation-2);
}

.md-icon-btn {
  position: relative;
  overflow: hidden;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  border-radius: var(--md-sys-shape-corner-full);
  border: 1px solid transparent;
  background-color: transparent;
  color: var(--md-sys-color-on-surface-variant);
  cursor: pointer;
  transition:
    background-color var(--md-sys-motion-duration-short2) var(--md-sys-motion-easing-standard),
    color var(--md-sys-motion-duration-short2) var(--md-sys-motion-easing-standard);
}
.md-icon-btn:hover:not(:disabled) {
  background-color: var(--md-sys-color-surface-container-high);
  color: var(--md-sys-color-on-surface);
}
.md-icon-btn:focus-visible {
  outline: 2px solid var(--md-sys-color-primary);
  outline-offset: 2px;
}
.md-icon-btn.tonal {
  background-color: var(--md-sys-color-secondary-container);
  color: var(--md-sys-color-on-secondary-container);
}

/* M3 Segmented Button */
.md-segmented-group {
  display: inline-flex;
  align-items: center;
  border: 1px solid var(--md-sys-color-outline);
  border-radius: var(--md-sys-shape-corner-full);
  overflow: hidden;
  background-color: var(--md-sys-color-surface);
}
.md-segmented-btn {
  position: relative;
  overflow: hidden;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--md-space-2);
  min-height: 36px;
  padding: 0 var(--md-space-4);
  border: none;
  border-right: 1px solid var(--md-sys-color-outline);
  background-color: transparent;
  color: var(--md-sys-color-on-surface);
  font-family: var(--md-sys-typescale-font-plain);
  font-size: 0.8125rem;
  font-weight: 600;
  cursor: pointer;
  transition:
    background-color var(--md-sys-motion-duration-short2) var(--md-sys-motion-easing-standard),
    color var(--md-sys-motion-duration-short2) var(--md-sys-motion-easing-standard);
}
.md-segmented-btn:last-child {
  border-right: none;
}
.md-segmented-btn:hover:not(.active) {
  background-color: var(--md-sys-color-surface-container-high);
}
.md-segmented-btn.active,
.md-segmented-btn[aria-selected="true"],
.md-segmented-btn[aria-pressed="true"] {
  background-color: var(--md-sys-color-secondary-container);
  color: var(--md-sys-color-on-secondary-container);
}

/* --- 2. Input Components (Filled/Outlined Text Field, Search, TextArea, Select, Checkbox, Radio, Switch, Slider, DatePicker) --- */
.md-search-bar {
  display: flex;
  align-items: center;
  gap: var(--md-space-3);
  min-height: 48px;
  padding: 0 var(--md-space-4);
  border-radius: var(--md-sys-shape-corner-full);
  background-color: var(--md-sys-color-surface-container-high);
  color: var(--md-sys-color-on-surface);
  border: 1px solid transparent;
  transition:
    background-color var(--md-sys-motion-duration-short2) var(--md-sys-motion-easing-standard),
    border-color var(--md-sys-motion-duration-short2) var(--md-sys-motion-easing-standard),
    box-shadow var(--md-sys-motion-duration-short2) var(--md-sys-motion-easing-standard);
}
.md-search-bar:focus-within {
  background-color: var(--md-sys-color-surface-container-lowest);
  border-color: var(--md-sys-color-primary);
  box-shadow: var(--md-sys-elevation-2);
}

.md-text-field-outlined,
.md-field-outlined,
.md-select,
.md-date-picker,
.md-textarea {
  width: 100%;
  min-height: 44px;
  padding: var(--md-space-2) var(--md-space-4);
  border-radius: var(--md-sys-shape-corner-small);
  border: 1px solid var(--md-sys-color-outline);
  background-color: var(--md-sys-color-surface-container-lowest);
  color: var(--md-sys-color-on-surface);
  font-family: var(--md-sys-typescale-font-plain);
  font-size: 0.9375rem;
  transition:
    border-color var(--md-sys-motion-duration-short2) var(--md-sys-motion-easing-standard),
    box-shadow var(--md-sys-motion-duration-short2) var(--md-sys-motion-easing-standard),
    background-color var(--md-sys-motion-duration-short2) var(--md-sys-motion-easing-standard);
}
.md-field-filled {
  width: 100%;
  min-height: 48px;
  padding: var(--md-space-3) var(--md-space-4);
  border-radius: var(--md-sys-shape-corner-small) var(--md-sys-shape-corner-small) 0 0;
  border: none;
  border-bottom: 2px solid var(--md-sys-color-outline);
  background-color: var(--md-sys-color-surface-container-highest);
  color: var(--md-sys-color-on-surface);
  font-family: var(--md-sys-typescale-font-plain);
  font-size: 0.9375rem;
  transition: border-color var(--md-sys-motion-duration-short2) var(--md-sys-motion-easing-standard);
}
.md-text-field-outlined:focus,
.md-field-outlined:focus,
.md-select:focus,
.md-date-picker:focus,
.md-textarea:focus {
  outline: none;
  border-color: var(--md-sys-color-primary);
  box-shadow: 0 0 0 2px var(--md-sys-color-primary-container);
}
.md-field-filled:focus {
  outline: none;
  border-bottom-color: var(--md-sys-color-primary);
}
.md-field-outlined.is-error,
.md-field-filled.is-error,
.md-textarea.is-error {
  border-color: var(--md-sys-color-error);
  box-shadow: 0 0 0 2px var(--md-sys-color-error-container);
}
.md-field-outlined.is-valid,
.md-field-filled.is-valid {
  border-color: var(--md-sys-color-tertiary);
}
.md-textarea {
  min-height: 88px;
  resize: vertical;
  line-height: 1.5;
}

/* M3 Switch */
.md-switch {
  position: relative;
  display: inline-flex;
  align-items: center;
  width: 52px;
  height: 32px;
  cursor: pointer;
  user-select: none;
  flex-shrink: 0;
}
.md-switch input {
  opacity: 0;
  width: 0;
  height: 0;
  position: absolute;
}
.md-switch-track {
  position: relative;
  width: 52px;
  height: 32px;
  background-color: var(--md-sys-color-surface-container-highest);
  border: 2px solid var(--md-sys-color-outline);
  border-radius: var(--md-sys-shape-corner-full);
  transition:
    background-color var(--md-sys-motion-duration-short2) var(--md-sys-motion-easing-standard),
    border-color var(--md-sys-motion-duration-short2) var(--md-sys-motion-easing-standard);
}
.md-switch-thumb {
  position: absolute;
  top: 50%;
  left: 6px;
  width: 16px;
  height: 16px;
  transform: translateY(-50%);
  background-color: var(--md-sys-color-outline);
  border-radius: 50%;
  transition:
    transform var(--md-sys-motion-duration-short2) var(--md-sys-motion-easing-emphasized),
    width var(--md-sys-motion-duration-short2) var(--md-sys-motion-easing-standard),
    height var(--md-sys-motion-duration-short2) var(--md-sys-motion-easing-standard),
    background-color var(--md-sys-motion-duration-short2) var(--md-sys-motion-easing-standard);
}
.md-switch input:checked + .md-switch-track {
  background-color: var(--md-sys-color-primary);
  border-color: var(--md-sys-color-primary);
}
.md-switch input:checked + .md-switch-track .md-switch-thumb {
  left: 4px;
  width: 24px;
  height: 24px;
  transform: translate(20px, -50%);
  background-color: var(--md-sys-color-on-primary);
}
.md-switch input:focus-visible + .md-switch-track {
  outline: 2px solid var(--md-sys-color-primary);
  outline-offset: 2px;
}

/* M3 Checkbox & Radio Button */
.md-checkbox-label,
.md-radio-label {
  display: inline-flex;
  align-items: center;
  gap: var(--md-space-2);
  min-height: 40px;
  cursor: pointer;
  color: var(--md-sys-color-on-surface);
  font-size: 0.875rem;
  font-weight: 500;
  user-select: none;
}
.md-checkbox,
.md-radio {
  width: 18px;
  height: 18px;
  accent-color: var(--md-sys-color-primary);
  cursor: pointer;
}

/* M3 Slider */
.md-slider {
  -webkit-appearance: none;
  appearance: none;
  width: 100%;
  height: 6px;
  border-radius: var(--md-sys-shape-corner-full);
  background: var(--md-sys-color-surface-container-highest);
  accent-color: var(--md-sys-color-primary);
  outline: none;
  cursor: pointer;
}
.md-slider::-webkit-slider-thumb {
  -webkit-appearance: none;
  appearance: none;
  width: 20px;
  height: 20px;
  border-radius: 50%;
  background: var(--md-sys-color-primary);
  box-shadow: var(--md-sys-elevation-1);
  cursor: pointer;
  transition: transform 0.15s ease;
}
.md-slider::-webkit-slider-thumb:hover {
  transform: scale(1.15);
}

/* --- 3. Chips, Badges, Tooltips, Dividers --- */
.md-chip {
  position: relative;
  overflow: hidden;
  display: inline-flex;
  align-items: center;
  gap: var(--md-space-2);
  height: 32px;
  padding: 0 var(--md-space-3);
  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-lowest);
  color: var(--md-sys-color-on-surface-variant);
  font-family: var(--md-sys-typescale-font-plain);
  font-size: 0.8125rem;
  font-weight: 600;
  text-decoration: none;
  cursor: pointer;
  transition:
    background-color var(--md-sys-motion-duration-short2) var(--md-sys-motion-easing-standard),
    color var(--md-sys-motion-duration-short2) var(--md-sys-motion-easing-standard),
    border-color var(--md-sys-motion-duration-short2) var(--md-sys-motion-easing-standard);
}
.md-chip:hover {
  background-color: var(--md-sys-color-surface-container-high);
  color: var(--md-sys-color-on-surface);
}
.md-chip.active,
.md-chip[aria-selected="true"] {
  background-color: var(--md-sys-color-secondary-container);
  color: var(--md-sys-color-on-secondary-container);
  border-color: transparent;
}

.md-badge {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 18px;
  height: 18px;
  padding: 0 6px;
  border-radius: var(--md-sys-shape-corner-full);
  background-color: var(--md-sys-color-error);
  color: var(--md-sys-color-on-error);
  font-size: 0.6875rem;
  font-weight: 700;
  line-height: 1;
}
.md-badge.primary {
  background-color: var(--md-sys-color-primary-container);
  color: var(--md-sys-color-on-primary-container);
}
.md-badge.tertiary {
  background-color: var(--md-sys-color-tertiary-container);
  color: var(--md-sys-color-on-tertiary-container);
}

.md-divider {
  width: 100%;
  height: 1px;
  border: none;
  background-color: var(--md-sys-color-outline-variant);
  margin: var(--md-space-3) 0;
}

[data-md-tooltip] {
  position: relative;
}
[data-md-tooltip]::after {
  content: attr(data-md-tooltip);
  position: absolute;
  bottom: calc(100% + 6px);
  left: 50%;
  transform: translateX(-50%) scale(0.92);
  background-color: var(--md-sys-color-inverse-surface);
  color: var(--md-sys-color-inverse-on-surface);
  padding: 4px 8px;
  border-radius: var(--md-sys-shape-corner-extra-small);
  font-size: 0.75rem;
  font-weight: 500;
  white-space: nowrap;
  pointer-events: none;
  opacity: 0;
  z-index: 9000;
  transition: opacity 0.15s ease, transform 0.15s ease;
}
[data-md-tooltip]:hover::after,
[data-md-tooltip]:focus-visible::after {
  opacity: 1;
  transform: translateX(-50%) scale(1);
}

/* --- 4. Cards, Lists, Tabs, Menus, Data Table --- */
.md-card-elevated {
  background-color: var(--md-sys-color-surface-container-low);
  color: var(--md-sys-color-on-surface);
  border-radius: var(--md-sys-shape-corner-large);
  box-shadow: var(--md-sys-elevation-1);
  border: 1px solid var(--md-sys-color-outline-variant);
}
.md-card-filled {
  background-color: var(--md-sys-color-surface-container-highest);
  color: var(--md-sys-color-on-surface);
  border-radius: var(--md-sys-shape-corner-large);
}
.md-card-outlined {
  background-color: var(--md-sys-color-surface);
  color: var(--md-sys-color-on-surface);
  border-radius: var(--md-sys-shape-corner-large);
  border: 1px solid var(--md-sys-color-outline-variant);
}

.md-list {
  display: flex;
  flex-direction: column;
  gap: 2px;
  list-style: none;
  padding: var(--md-space-1) 0;
  margin: 0;
}
.md-list-item {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--md-space-3);
  min-height: 52px;
  padding: var(--md-space-2) var(--md-space-4);
  border-radius: var(--md-sys-shape-corner-medium);
  color: var(--md-sys-color-on-surface);
  text-decoration: none;
  transition: background-color 0.15s ease;
}
.md-list-item:hover {
  background-color: var(--md-sys-color-surface-container-high);
}

/* M3 Tabs */
.md-tabs {
  display: flex;
  align-items: center;
  border-bottom: 1px solid var(--md-sys-color-outline-variant);
  gap: var(--md-space-1);
  overflow-x: auto;
  scrollbar-width: none;
}
.md-tabs::-webkit-scrollbar { display: none; }
.md-tab {
  position: relative;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--md-space-2);
  min-height: 44px;
  padding: 0 var(--md-space-4);
  border: none;
  background: transparent;
  color: var(--md-sys-color-on-surface-variant);
  font-family: var(--md-sys-typescale-font-plain);
  font-size: 0.875rem;
  font-weight: 600;
  cursor: pointer;
  white-space: nowrap;
  transition: color 0.15s ease;
}
.md-tab:hover {
  color: var(--md-sys-color-on-surface);
}
.md-tab.active,
.md-tab[aria-selected="true"] {
  color: var(--md-sys-color-primary);
}
.md-tab.active::after,
.md-tab[aria-selected="true"]::after {
  content: "";
  position: absolute;
  left: 16px;
  right: 16px;
  bottom: 0;
  height: 3px;
  border-radius: 3px 3px 0 0;
  background-color: var(--md-sys-color-primary);
}

/* M3 Data Table */
.md-data-table-wrap {
  width: 100%;
  overflow-x: auto;
  border-radius: var(--md-sys-shape-corner-large);
  border: 1px solid var(--md-sys-color-outline-variant);
  background-color: var(--md-sys-color-surface-container-lowest);
}
.md-data-table {
  width: 100%;
  border-collapse: collapse;
  font-family: var(--md-sys-typescale-font-plain);
  font-size: 0.8125rem;
  color: var(--md-sys-color-on-surface);
  text-align: left;
}
.md-data-table th {
  background-color: var(--md-sys-color-surface-container);
  color: var(--md-sys-color-on-surface-variant);
  font-weight: 700;
  padding: 12px 16px;
  border-bottom: 1px solid var(--md-sys-color-outline-variant);
  white-space: nowrap;
}
.md-data-table td {
  padding: 10px 16px;
  border-bottom: 1px solid var(--md-sys-color-outline-variant);
  vertical-align: middle;
}
.md-data-table tbody tr:last-child td {
  border-bottom: none;
}
.md-data-table tbody tr:hover {
  background-color: var(--md-sys-color-surface-container-low);
}

/* --- 5. Dialog, Modal, Bottom Sheet, Menu & Snackbar --- */
.md-dialog-scrim,
.md-bottom-sheet-scrim {
  position: fixed;
  inset: 0;
  background-color: var(--md-sys-color-scrim);
  backdrop-filter: blur(4px);
  display: none;
  align-items: center;
  justify-content: center;
  z-index: 10000;
  padding: var(--md-space-4);
}
.md-dialog-scrim.open,
.md-bottom-sheet-scrim.open {
  display: flex;
}
.md-dialog-surface {
  background-color: var(--md-sys-color-surface-container-high);
  color: var(--md-sys-color-on-surface);
  border-radius: var(--md-sys-shape-corner-extra-large);
  box-shadow: var(--md-sys-elevation-3);
  padding: var(--md-space-6);
  max-width: 540px;
  width: 100%;
  max-height: 90vh;
  overflow-y: auto;
  border: 1px solid var(--md-sys-color-outline-variant);
  animation: md-dialog-enter 220ms var(--md-sys-motion-easing-emphasized-decelerate);
}
@keyframes md-dialog-enter {
  from { opacity: 0; transform: scale(0.95) translateY(8px); }
  to { opacity: 1; transform: scale(1) translateY(0); }
}

.md-bottom-sheet-scrim {
  align-items: flex-end;
  padding: 0;
}
.md-bottom-sheet {
  background-color: var(--md-sys-color-surface-container-low);
  color: var(--md-sys-color-on-surface);
  border-radius: var(--md-sys-shape-corner-extra-large) var(--md-sys-shape-corner-extra-large) 0 0;
  box-shadow: var(--md-sys-elevation-4);
  padding: var(--md-space-4) var(--md-space-6) var(--md-space-6);
  width: 100%;
  max-width: 640px;
  max-height: 85vh;
  overflow-y: auto;
  border-top: 1px solid var(--md-sys-color-outline-variant);
  animation: md-sheet-enter 250ms var(--md-sys-motion-easing-emphasized-decelerate);
}
.md-bottom-sheet-handle {
  width: 32px;
  height: 4px;
  border-radius: var(--md-sys-shape-corner-full);
  background-color: var(--md-sys-color-outline-variant);
  margin: 4px auto 16px;
}
@keyframes md-sheet-enter {
  from { transform: translateY(100%); }
  to { transform: translateY(0); }
}

.md-snackbar {
  background-color: var(--md-sys-color-inverse-surface);
  color: var(--md-sys-color-inverse-on-surface);
  border-radius: var(--md-sys-shape-corner-small);
  box-shadow: var(--md-sys-elevation-3);
  padding: var(--md-space-3) var(--md-space-4);
  font-family: var(--md-sys-typescale-font-plain);
  font-size: 0.875rem;
  font-weight: 500;
  display: inline-flex;
  align-items: center;
  gap: var(--md-space-3);
}

/* --- 6. Progress Indicators, Empty/Error States & Ripple --- */
.md-linear-progress {
  position: relative;
  width: 100%;
  height: 4px;
  background-color: var(--md-sys-color-surface-container-highest);
  border-radius: var(--md-sys-shape-corner-full);
  overflow: hidden;
}
.md-linear-progress::after {
  content: "";
  position: absolute;
  inset: 0;
  width: 45%;
  background-color: var(--md-sys-color-primary);
  border-radius: var(--md-sys-shape-corner-full);
  animation: md-linear-indeterminate 1.4s infinite var(--md-sys-motion-easing-emphasized);
}
@keyframes md-linear-indeterminate {
  0% { transform: translateX(-110%); }
  100% { transform: translateX(240%); }
}

.md-circular-progress {
  display: inline-block;
  width: 24px;
  height: 24px;
  border: 3px solid var(--md-sys-color-surface-container-highest);
  border-top-color: var(--md-sys-color-primary);
  border-radius: 50%;
  animation: md-spin 0.8s linear infinite;
}

.md-empty-state,
.md-error-state {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  gap: var(--md-space-3);
  padding: var(--md-space-8) var(--md-space-4);
  border-radius: var(--md-sys-shape-corner-large);
  background-color: var(--md-sys-color-surface-container-low);
  border: 1px dashed var(--md-sys-color-outline-variant);
  color: var(--md-sys-color-on-surface-variant);
}
.md-error-state {
  background-color: var(--md-sys-color-error-container);
  color: var(--md-sys-color-on-error-container);
  border-color: var(--md-sys-color-error);
}

.md-ripple-surface {
  position: relative;
  overflow: hidden;
}
.md-ripple-wave {
  position: absolute;
  border-radius: 50%;
  transform: scale(0);
  pointer-events: none;
  background-color: currentColor;
  opacity: 0.16;
  animation: md-ripple-anim 550ms var(--md-sys-motion-easing-emphasized-decelerate) forwards;
}
@keyframes md-ripple-anim {
  to {
    transform: scale(3.5);
    opacity: 0;
  }
}

/* Compact Density Option */
[data-density="compact"] .md-btn {
  min-height: 34px;
  padding: 0 var(--md-space-4);
}
[data-density="compact"] .md-data-table td,
[data-density="compact"] .md-data-table th {
  padding: 7px 12px;
}

/* Reduced Motion Compliance (WCAG 2.2 AA & Manual Preference) */
@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
}
[data-motion="reduced"] *,
[data-motion="reduced"] *::before,
[data-motion="reduced"] *::after {
  animation-duration: 0.01ms !important;
  animation-iteration-count: 1 !important;
  transition-duration: 0.01ms !important;
  scroll-behavior: auto !important;
}