/* ==========================================================================
   DT GLOBAL — NEUTRAL UI DESIGN SYSTEM
   Quiet, high-contrast monochrome surfaces for light and dark themes.

   Material physics (seeded from the reference spec, then extended):
     surface        the single continuous material every element is extruded from
     shadow-dark    light falling away  (light: #D1D9E6 | dark: #14161B)
     shadow-light   light catching      (light: #FFFFFF | dark: #32373F)
     Elements are RAISED (outer double shadow), PRESSED (inset double shadow)
     or FLUSH (hairline only). Nothing "floats" on a different colour plane.

   Load order: neu.css FIRST, then the area stylesheet.
   Everything is driven by the tokens below — never hardcode a colour.
   ========================================================================== */

/* --------------------------------------------------------------------------
   1. TOKENS
   -------------------------------------------------------------------------- */

:root {
  /* ---- Typography ---- */
  --neu-font-sans: 'Inter', 'Noto Sans', -apple-system, BlinkMacSystemFont, 'Segoe UI',
    Roboto, 'Helvetica Neue', Arial, sans-serif;
  --neu-font-mono: ui-monospace, 'SF Mono', SFMono-Regular, 'JetBrains Mono', Menlo,
    Consolas, 'Liberation Mono', monospace;

  --neu-text-2xs: 0.6875rem;   /* 11px  micro labels, table meta */
  --neu-text-xs:  0.75rem;     /* 12px  captions, badges */
  --neu-text-sm:  0.8125rem;   /* 13px  dense UI, table cells */
  --neu-text-md:  0.875rem;    /* 14px  body / controls */
  --neu-text-base:0.9375rem;   /* 15px  comfortable body */
  --neu-text-lg:  1.0625rem;   /* 17px  card titles */
  --neu-text-xl:  1.375rem;    /* 22px  section titles */
  --neu-text-2xl: 1.75rem;     /* 28px  page titles */
  --neu-text-3xl: 2.25rem;     /* 36px  hero */

  --neu-weight-normal: 400;
  --neu-weight-medium: 500;
  --neu-weight-semi:   600;
  --neu-weight-bold:   700;

  --neu-leading-tight: 1.2;
  --neu-leading-snug:  1.35;
  --neu-leading-normal:1.55;
  --neu-leading-loose: 1.7;

  --neu-tracking-tight: -0.018em;
  --neu-tracking-snug:  -0.008em;
  --neu-tracking-wide:   0.04em;
  --neu-tracking-caps:   0.14em;

  /* ---- Space (4pt base, geometric above 24) ---- */
  --neu-sp-0:  0;
  --neu-sp-1:  0.25rem;   /* 4  */
  --neu-sp-2:  0.5rem;    /* 8  */
  --neu-sp-3:  0.75rem;   /* 12 */
  --neu-sp-4:  1rem;      /* 16 */
  --neu-sp-5:  1.25rem;   /* 20 */
  --neu-sp-6:  1.5rem;    /* 24 */
  --neu-sp-7:  2rem;      /* 32 */
  --neu-sp-8:  2.5rem;    /* 40 */
  --neu-sp-9:  3rem;      /* 48 */
  --neu-sp-10: 4rem;      /* 64 */
  --neu-sp-11: 5rem;      /* 80 */

  /* ---- Radius ---- */
  --neu-r-xs:  0.375rem;
  --neu-r-sm:  0.5rem;
  --neu-r-md:  0.625rem;
  --neu-r-lg:  0.75rem;
  --neu-r-xl:  1rem;
  --neu-r-2xl: 1.25rem;
  --neu-r-pill:999px;
  --neu-r-circle: 50%;

  /* ---- Motion ---- */
  --neu-ease:        cubic-bezier(0.2, 0.8, 0.2, 1);
  --neu-ease-out:    cubic-bezier(0.16, 1, 0.3, 1);
  --neu-ease-in-out: cubic-bezier(0.65, 0, 0.35, 1);
  --neu-ease-spring: cubic-bezier(0.34, 1.56, 0.64, 1);
  --neu-dur-1: 110ms;
  --neu-dur-2: 180ms;
  --neu-dur-3: 260ms;
  --neu-dur-4: 420ms;
  --neu-dur-5: 700ms;

  /* ---- Layout metrics ---- */
  --neu-sidebar-w:        17.5rem;
  --neu-sidebar-w-collapsed: 5rem;
  --neu-topbar-h:         4.25rem;
  --neu-content-max:      92rem;
  --neu-focus-ring-w:     2px;

  /* ---- Z ---- */
  --neu-z-base: 1;
  --neu-z-sticky: 50;
  --neu-z-sidebar: 200;
  --neu-z-topbar: 300;
  --neu-z-overlay: 800;
  --neu-z-modal: 900;
  --neu-z-toast: 1000;
  --neu-z-tooltip: 1100;
}

/* ==========================  LIGHT THEME  ================================= */
:root,
:root[data-theme='light'] {
  color-scheme: light;

  /* material */
  --neu-surface:        #F4F4F2;
  --neu-surface-raised: #FAFAF9;
  --neu-surface-sunken: #EAEAE7;
  --neu-surface-deep:   #DEDEDA;
  --neu-surface-alt:    #F7F7F5;
  --neu-canvas:         #ECECE9;
  /* Neutral studio backdrop used by WebGL only. Keep 2D/print canvases on
     --neu-canvas so artwork output remains unchanged. */
  --neu-webgl-bg:       #E7E7E4;

  --neu-shadow-dark:  rgba(20, 20, 18, 0.14);
  --neu-shadow-light: rgba(255, 255, 255, 0.70);
  --neu-shadow-dark-soft:  rgba(20, 20, 18, 0.10);
  --neu-shadow-light-soft: rgba(255, 255, 255, 0.60);
  --neu-shadow-cast:  rgba(20, 20, 18, 0.14);
  --neu-edge-highlight: rgba(255, 255, 255, 0.82);
  --neu-edge-shadow: rgba(20, 20, 18, 0.08);

  /* type */
  --neu-text:        #2C2C29;
  --neu-text-strong: #171715;
  --neu-text-muted:  #5B5B56;
  --neu-text-subtle: #686863;
  --neu-text-faint:  #767670;
  --neu-text-invert: #FAFAF8;

  /* lines */
  --neu-line:        rgba(23, 23, 21, 0.14);
  --neu-line-strong: rgba(23, 23, 21, 0.28);
  --neu-line-light:  rgba(255, 255, 255, 0.72);

  /* selection/focus uses one neutral treatment */
  --neu-accent:        #30302D;
  --neu-accent-hover:  #171715;
  --neu-accent-soft:   rgba(23, 23, 21, 0.10);
  --neu-accent-ring:   rgba(23, 23, 21, 0.62);
  --neu-accent-text:   #282825;
  --neu-accent-on:     #FAFAF8;
  --neu-focus:         #242421;

  /* tonal primary action (monotone, high contrast) */
  --neu-solid:        #292927;
  --neu-solid-hover:  #151513;
  --neu-solid-on:     #FAFAF8;

  /* semantic */
  --neu-success: #333330;  --neu-success-soft: rgba(23, 23, 21, 0.08); --neu-success-on: #FFFFFF;
  --neu-warning: #4A4A45;  --neu-warning-soft: rgba(23, 23, 21, 0.08); --neu-warning-on: #FFFFFF;
  --neu-danger:  #20201E;  --neu-danger-soft:  rgba(23, 23, 21, 0.08); --neu-danger-on:  #FFFFFF;
  --neu-info:    #3D3D39;  --neu-info-soft:    rgba(23, 23, 21, 0.08); --neu-info-on:    #FFFFFF;

  /* inputs read as carved out of the material */
  --neu-field-bg:    var(--neu-surface);
  --neu-field-text:  var(--neu-text);
  --neu-placeholder: var(--neu-text-faint);

  --neu-scrim: rgba(20, 20, 18, 0.42);
  --neu-glass: rgba(255, 255, 255, 0.55);

  --neu-track: rgba(23, 23, 21, 0.14);
  --neu-thumb: rgba(23, 23, 21, 0.42);

  /* high-contrast selection controls */
  --neu-control-bg: #FAFAF9;
  --neu-control-border: #5B5B56;
  --neu-control-checked: #171715;
  --neu-control-mark: #FFFFFF;
  --neu-control-disabled-bg: #E1E1DE;
  --neu-control-disabled-border: #8A8A84;
}

/* ==========================  DARK THEME  ================================== */
:root[data-theme='dark'] {
  color-scheme: dark;

  --neu-surface:        #242422;
  --neu-surface-raised: #2B2B28;
  --neu-surface-sunken: #1D1D1B;
  --neu-surface-deep:   #171716;
  --neu-surface-alt:    #30302D;
  --neu-canvas:         #1F1F1D;
  --neu-webgl-bg:       #171816;

  --neu-shadow-dark:  rgba(0, 0, 0, 0.38);
  --neu-shadow-light: rgba(255, 255, 255, 0.045);
  --neu-shadow-dark-soft:  rgba(0, 0, 0, 0.30);
  --neu-shadow-light-soft: rgba(255, 255, 255, 0.035);
  --neu-shadow-cast:  rgba(0, 0, 0, 0.42);
  --neu-edge-highlight: rgba(255, 255, 255, 0.07);
  --neu-edge-shadow: rgba(0, 0, 0, 0.34);

  --neu-text:        #E7E7E3;
  --neu-text-strong: #FAFAF7;
  --neu-text-muted:  #B9B9B2;
  --neu-text-subtle: #AAAAA3;
  --neu-text-faint:  #92928B;
  --neu-text-invert: #171716;

  --neu-line:        rgba(255, 255, 255, 0.075);
  --neu-line-strong: rgba(255, 255, 255, 0.16);
  --neu-line-light:  rgba(255, 255, 255, 0.06);

  --neu-accent:        #E4E4DF;
  --neu-accent-hover:  #FFFFFF;
  --neu-accent-soft:   rgba(255, 255, 255, 0.10);
  --neu-accent-ring:   rgba(255, 255, 255, 0.68);
  --neu-accent-text:   #ECECE8;
  --neu-accent-on:     #191917;
  --neu-focus:         #F0F0EC;

  --neu-solid:        #E7E7E3;
  --neu-solid-hover:  #FAFAF7;
  --neu-solid-on:     #1B1B19;

  --neu-success: #E0E0DB;  --neu-success-soft: rgba(255, 255, 255, 0.08); --neu-success-on: #171716;
  --neu-warning: #D2D2CC;  --neu-warning-soft: rgba(255, 255, 255, 0.08); --neu-warning-on: #171716;
  --neu-danger:  #F1F1ED;  --neu-danger-soft:  rgba(255, 255, 255, 0.08); --neu-danger-on:  #171716;
  --neu-info:    #DADAD5;  --neu-info-soft:    rgba(255, 255, 255, 0.08); --neu-info-on:    #171716;

  --neu-field-bg:    var(--neu-surface);
  --neu-field-text:  var(--neu-text);
  --neu-placeholder: var(--neu-text-faint);

  --neu-scrim: rgba(0, 0, 0, 0.62);
  --neu-glass: rgba(36, 36, 34, 0.62);

  --neu-track: rgba(255, 255, 255, 0.09);
  --neu-thumb: rgba(255, 255, 255, 0.18);

  --neu-control-bg: #30302D;
  --neu-control-border: #B9B9B2;
  --neu-control-checked: #F4F4F2;
  --neu-control-mark: #171715;
  --neu-control-disabled-bg: #1D1D1B;
  --neu-control-disabled-border: #777770;
}

/* ---- Derived shadow recipes (theme-independent, built from the tokens) ---- */
:root {
  /* RAISED — the element is extruded out of the surface */
  --neu-raise-xs: inset 0 1px 0 var(--neu-edge-highlight), 0 1px 2px var(--neu-shadow-dark);
  --neu-raise-sm: inset 0 1px 0 var(--neu-edge-highlight), inset 0 -1px 0 var(--neu-edge-shadow), 0 2px 5px var(--neu-shadow-dark);
  --neu-raise:    inset 0 1px 0 var(--neu-edge-highlight), inset 0 -1px 0 var(--neu-edge-shadow), 0 3px 10px var(--neu-shadow-dark);
  --neu-raise-lg: inset 0 1px 0 var(--neu-edge-highlight), inset 0 -1px 0 var(--neu-edge-shadow), 0 6px 18px var(--neu-shadow-dark);
  --neu-raise-xl: inset 0 1px 0 var(--neu-edge-highlight), inset 0 -1px 0 var(--neu-edge-shadow), 0 10px 28px var(--neu-shadow-dark);

  /* PRESSED — the element is carved into the surface */
  --neu-press-xs: inset 0 0 0 1px var(--neu-line);
  --neu-press-sm: inset 0 0 0 1px var(--neu-line-strong), inset 0 1px 2px var(--neu-shadow-dark);
  --neu-press:    inset 0 0 0 1px var(--neu-line-strong), inset 0 2px 5px var(--neu-shadow-dark);
  --neu-press-lg: inset 0 0 0 1px var(--neu-line-strong), inset 0 3px 7px var(--neu-shadow-dark);
  --neu-press-xl: inset 0 0 0 1px var(--neu-line-strong), inset 0 4px 10px var(--neu-shadow-dark);

  /* FLOATING — genuinely above the plane (menus, modals, toasts) */
  --neu-float:    inset 0 1px 0 var(--neu-edge-highlight), 0 10px 28px -10px var(--neu-shadow-cast), 0 2px 8px var(--neu-shadow-dark);
  --neu-float-lg: inset 0 1px 0 var(--neu-edge-highlight), 0 18px 44px -14px var(--neu-shadow-cast), 0 4px 12px var(--neu-shadow-dark);

  /* focus */
  --neu-ring: 0 0 0 var(--neu-focus-ring-w) var(--neu-accent-ring);
  --neu-ring-danger: 0 0 0 var(--neu-focus-ring-w) var(--neu-danger-soft);
}

/* --------------------------------------------------------------------------
   2. RESET & BASE
   -------------------------------------------------------------------------- */

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

html {
  -webkit-text-size-adjust: 100%;
  -moz-text-size-adjust: 100%;
  text-size-adjust: 100%;
  scroll-behavior: smooth;
}

body {
  margin: 0;
  min-height: 100vh;
  font-family: var(--neu-font-sans);
  font-size: var(--neu-text-md);
  line-height: var(--neu-leading-normal);
  letter-spacing: var(--neu-tracking-snug);
  color: var(--neu-text);
  background-color: var(--neu-surface);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  font-variant-ligatures: common-ligatures;
  text-rendering: optimizeLegibility;
  transition: background-color var(--neu-dur-3) var(--neu-ease),
              color var(--neu-dur-3) var(--neu-ease);
}

/* The ambient light source. A very wide, very faint radial keeps the plane
   from reading as flat paint and gives the soft-UI its "material" feel. */
body::before { content: none; }

h1, h2, h3, h4, h5, h6 {
  margin: 0 0 var(--neu-sp-3);
  font-weight: var(--neu-weight-semi);
  line-height: var(--neu-leading-tight);
  letter-spacing: var(--neu-tracking-tight);
  color: var(--neu-text-strong);
  text-wrap: balance;
}
h1 { font-size: var(--neu-text-2xl); }
h2 { font-size: var(--neu-text-xl); }
h3 { font-size: var(--neu-text-lg); }
h4 { font-size: var(--neu-text-base); }
h5 { font-size: var(--neu-text-md); }
h6 {
  font-size: var(--neu-text-xs);
  text-transform: uppercase;
  letter-spacing: var(--neu-tracking-caps);
  color: var(--neu-text-subtle);
  font-weight: var(--neu-weight-semi);
}

p { margin: 0 0 var(--neu-sp-4); }
p:last-child { margin-bottom: 0; }

a {
  color: var(--neu-accent-text);
  text-decoration: none;
  transition: color var(--neu-dur-1) var(--neu-ease);
}
a:hover { color: var(--neu-accent-hover); }
a:focus-visible {
  outline: 2px solid var(--neu-focus);
  outline-offset: 2px;
  border-radius: var(--neu-r-xs);
  box-shadow: var(--neu-ring);
}

small { font-size: var(--neu-text-xs); color: var(--neu-text-muted); }

code, kbd, pre, samp {
  font-family: var(--neu-font-mono);
  font-size: 0.92em;
  font-variant-ligatures: none;
}
code {
  padding: 0.15em 0.42em;
  border-radius: var(--neu-r-xs);
  background: var(--neu-surface-sunken);
  box-shadow: var(--neu-press-xs);
  color: var(--neu-text);
}
pre {
  margin: 0 0 var(--neu-sp-4);
  padding: var(--neu-sp-4);
  overflow: auto;
  border-radius: var(--neu-r-md);
  background: var(--neu-surface-sunken);
  box-shadow: var(--neu-press-sm);
}
pre code { padding: 0; background: none; box-shadow: none; }

hr {
  height: 1px;
  margin: var(--neu-sp-6) 0;
  border: 0;
  background: linear-gradient(90deg, transparent, var(--neu-line-strong) 18%,
              var(--neu-line-strong) 82%, transparent);
}

img, svg, video, canvas { max-width: 100%; }
img { border-style: none; }

::selection {
  background: var(--neu-accent-soft);
  color: var(--neu-text-strong);
}

:focus-visible {
  outline: 2px solid var(--neu-focus);
  outline-offset: 2px;
}

button,
[role='button'],
label[for],
select,
input[type='checkbox'],
input[type='radio'],
input[type='range'],
input[type='color'],
input[type='file'] { cursor: pointer; }

button:disabled,
select:disabled,
input:disabled { cursor: not-allowed; }

input[type='checkbox'],
input[type='radio'] {
  appearance: none;
  -webkit-appearance: none;
  display: inline-grid;
  place-content: center;
  flex: 0 0 auto;
  width: 1.125rem;
  height: 1.125rem;
  margin: 0;
  border: 1px solid var(--neu-text-faint);
  background: var(--neu-surface-raised);
  color: var(--neu-accent-on);
  vertical-align: middle;
}
input[type='checkbox'] { border-radius: 0.25rem; }
input[type='radio'] { border-radius: 50%; }
input[type='checkbox']::before,
input[type='radio']::before {
  content: '';
  width: 0.55rem;
  height: 0.55rem;
  transform: scale(0);
  transition: transform var(--neu-dur-1) var(--neu-ease);
  background: var(--neu-accent-on);
}
input[type='checkbox']::before {
  width: 0.55rem;
  height: 0.32rem;
  border: solid currentColor;
  border-width: 0 0 2px 2px;
  background: transparent;
  transform: rotate(-45deg) scale(0);
}
input[type='radio']::before { border-radius: 50%; }
input[type='checkbox']:checked,
input[type='radio']:checked {
  border-color: var(--neu-accent);
  background: var(--neu-accent);
}
input[type='checkbox']:checked::before { transform: rotate(-45deg) scale(1); }
input[type='radio']:checked::before { transform: scale(1); }
input[type='checkbox']:focus-visible,
input[type='radio']:focus-visible {
  outline: 2px solid var(--neu-focus);
  outline-offset: 2px;
}

/* Scrollbars — carved channels, in-material */
* { scrollbar-width: thin; scrollbar-color: var(--neu-thumb) transparent; }
::-webkit-scrollbar { width: 11px; height: 11px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb {
  border: 3px solid transparent;
  border-radius: var(--neu-r-pill);
  background-clip: padding-box;
  background-color: var(--neu-thumb);
  transition: background-color var(--neu-dur-2) var(--neu-ease);
}
::-webkit-scrollbar-thumb:hover { background-color: var(--neu-text-subtle); }
::-webkit-scrollbar-corner { background: transparent; }

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.001ms !important;
    scroll-behavior: auto !important;
  }
}

/* --------------------------------------------------------------------------
   3. MATERIAL PRIMITIVES  (composable, use anywhere)
   -------------------------------------------------------------------------- */

.neu-raised,
.neu-pressed,
.neu-flat,
.neu-floating {
  background: var(--neu-surface);
  border-radius: var(--neu-r-md);
  transition: box-shadow var(--neu-dur-3) var(--neu-ease),
              transform var(--neu-dur-2) var(--neu-ease),
              background-color var(--neu-dur-3) var(--neu-ease);
}
.neu-raised   { box-shadow: var(--neu-raise); }
.neu-raised-sm{ box-shadow: var(--neu-raise-sm); }
.neu-raised-lg{ box-shadow: var(--neu-raise-lg); }
.neu-raised-xl{ box-shadow: var(--neu-raise-xl); }
.neu-pressed  { box-shadow: var(--neu-press); background: var(--neu-surface-sunken); }
.neu-flat     { box-shadow: none; border: 1px solid var(--neu-line); }
.neu-floating { box-shadow: var(--neu-float); }

/* --------------------------------------------------------------------------
   4. SURFACES — card / panel / well
   -------------------------------------------------------------------------- */

.neu-card {
  position: relative;
  padding: var(--neu-sp-6);
  border-radius: var(--neu-r-lg);
  background: var(--neu-surface);
  box-shadow: var(--neu-raise);
  transition: box-shadow var(--neu-dur-3) var(--neu-ease),
              transform var(--neu-dur-3) var(--neu-ease);
}
.neu-card--sm { padding: var(--neu-sp-4); border-radius: var(--neu-r-md); }
.neu-card--lg { padding: var(--neu-sp-8); border-radius: var(--neu-r-xl); }
.neu-card--flush { padding: 0; overflow: hidden; }

.neu-card--interactive { cursor: pointer; }
.neu-card--interactive:hover {
  box-shadow: var(--neu-raise-lg);
  transform: translateY(-2px);
}
.neu-card--interactive:active {
  box-shadow: var(--neu-press-sm);
  transform: translateY(0);
}

.neu-panel {
  padding: var(--neu-sp-5);
  border-radius: var(--neu-r-lg);
  background: var(--neu-surface);
  box-shadow: var(--neu-raise-sm);
}

.neu-well {
  padding: var(--neu-sp-5);
  border-radius: var(--neu-r-lg);
  background: var(--neu-surface-sunken);
  box-shadow: var(--neu-press);
}

.neu-card__head,
.neu-panel__head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--neu-sp-4);
  margin-bottom: var(--neu-sp-5);
}
.neu-card__title {
  margin: 0;
  font-size: var(--neu-text-lg);
  font-weight: var(--neu-weight-semi);
  letter-spacing: var(--neu-tracking-tight);
  color: var(--neu-text-strong);
}
.neu-card__sub {
  margin: var(--neu-sp-1) 0 0;
  font-size: var(--neu-text-sm);
  color: var(--neu-text-muted);
}

/* Section heading with a hairline rule that fades out */
.neu-section-title {
  display: flex;
  align-items: center;
  gap: var(--neu-sp-4);
  margin: 0 0 var(--neu-sp-5);
  font-size: var(--neu-text-2xs);
  font-weight: var(--neu-weight-semi);
  text-transform: uppercase;
  letter-spacing: var(--neu-tracking-caps);
  color: var(--neu-text-subtle);
}
.neu-section-title::after {
  content: '';
  flex: 1;
  height: 1px;
  background: linear-gradient(90deg, var(--neu-line-strong), transparent);
}

/* --------------------------------------------------------------------------
   5. BUTTONS
   -------------------------------------------------------------------------- */

.neu-btn {
  --_btn-h: 2.625rem;
  position: relative;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--neu-sp-2);
  min-height: var(--_btn-h);
  padding: 0 var(--neu-sp-5);
  border: 0;
  border-radius: var(--neu-r-md);
  background: var(--neu-surface);
  box-shadow: var(--neu-raise-sm);
  color: var(--neu-text);
  font-family: inherit;
  font-size: var(--neu-text-md);
  font-weight: var(--neu-weight-medium);
  letter-spacing: var(--neu-tracking-snug);
  line-height: 1;
  text-decoration: none;
  white-space: nowrap;
  cursor: pointer;
  user-select: none;
  -webkit-appearance: none;
  appearance: none;
  transition: box-shadow var(--neu-dur-2) var(--neu-ease),
              transform var(--neu-dur-1) var(--neu-ease),
              color var(--neu-dur-2) var(--neu-ease),
              background-color var(--neu-dur-2) var(--neu-ease);
}
.neu-btn:hover:not(:disabled):not([aria-disabled='true']) {
  box-shadow: var(--neu-raise);
  color: var(--neu-text-strong);
  transform: translateY(-1px);
}
.neu-btn:active:not(:disabled):not([aria-disabled='true']) {
  box-shadow: var(--neu-press-sm);
  transform: translateY(0);
  transition-duration: var(--neu-dur-1);
}
.neu-btn:focus-visible {
  box-shadow: var(--neu-raise-sm), var(--neu-ring);
  outline: none;
}
.neu-btn:disabled,
.neu-btn[aria-disabled='true'] {
  cursor: not-allowed;
  opacity: 0.5;
  box-shadow: var(--neu-press-xs);
  transform: none;
}

/* sizes */
.neu-btn--xs { --_btn-h: 1.75rem; padding: 0 var(--neu-sp-3); font-size: var(--neu-text-2xs); border-radius: var(--neu-r-xs); gap: var(--neu-sp-1); }
.neu-btn--sm { --_btn-h: 2.125rem; padding: 0 var(--neu-sp-4); font-size: var(--neu-text-sm); border-radius: var(--neu-r-sm); }
.neu-btn--lg { --_btn-h: 3.125rem; padding: 0 var(--neu-sp-7); font-size: var(--neu-text-base); border-radius: var(--neu-r-lg); }
.neu-btn--block { display: flex; width: 100%; }
.neu-btn--pill { border-radius: var(--neu-r-pill); }

/* variants */
.neu-btn--primary {
  background: var(--neu-solid);
  color: var(--neu-solid-on);
  box-shadow: var(--neu-raise-sm);
}
.neu-btn--primary:hover:not(:disabled) { background: var(--neu-solid-hover); color: var(--neu-solid-on); box-shadow: var(--neu-raise); }
.neu-btn--primary:active:not(:disabled) { box-shadow: var(--neu-press-sm), inset 0 0 0 100vmax rgba(0,0,0,0.06); }

.neu-btn--accent {
  background: var(--neu-accent);
  color: var(--neu-accent-on);
}
.neu-btn--accent:hover:not(:disabled) { background: var(--neu-accent-hover); color: var(--neu-accent-on); }

.neu-btn--danger { color: var(--neu-danger); }
.neu-btn--danger:hover:not(:disabled) { background: var(--neu-danger-soft); color: var(--neu-danger); }
.neu-btn--danger-solid { background: var(--neu-danger); color: var(--neu-danger-on); }
.neu-btn--danger-solid:hover:not(:disabled) { background: var(--neu-danger); color: var(--neu-danger-on); filter: brightness(1.07); }

.neu-btn--success { color: var(--neu-success); }
.neu-btn--success:hover:not(:disabled) { background: var(--neu-success-soft); color: var(--neu-success); }

.neu-btn--ghost {
  background: transparent;
  box-shadow: none;
  color: var(--neu-text-muted);
}
.neu-btn--ghost:hover:not(:disabled) { background: var(--neu-surface); box-shadow: var(--neu-raise-xs); color: var(--neu-text-strong); }
.neu-btn--ghost:active:not(:disabled) { box-shadow: var(--neu-press-xs); }

.neu-btn--quiet { box-shadow: none; background: transparent; color: var(--neu-text-muted); }
.neu-btn--quiet:hover:not(:disabled) { color: var(--neu-text-strong); background: var(--neu-accent-soft); box-shadow: none; transform: none; }

/* icon-only */
.neu-btn--icon {
  width: var(--_btn-h);
  min-width: var(--_btn-h);
  padding: 0;
  border-radius: var(--neu-r-md);
}
.neu-btn--icon.neu-btn--pill,
.neu-btn--circle { border-radius: var(--neu-r-circle); }

/* toggle / segmented state */
.neu-btn.is-active,
.neu-btn[aria-pressed='true'] {
  box-shadow: var(--neu-press-sm);
  color: var(--neu-accent-text);
  background: var(--neu-surface-sunken);
}

.neu-btn .material-icons,
.neu-btn .material-symbols-outlined { font-size: 1.15em; line-height: 1; }

/* Segmented control */
.neu-segment {
  display: inline-flex;
  gap: var(--neu-sp-1);
  padding: var(--neu-sp-1);
  border-radius: var(--neu-r-md);
  background: var(--neu-surface-sunken);
  box-shadow: var(--neu-press-sm);
}
.neu-segment > * {
  border-radius: calc(var(--neu-r-md) - var(--neu-sp-1));
  box-shadow: none;
  background: transparent;
}
.neu-segment > .is-active,
.neu-segment > [aria-selected='true'] {
  background: var(--neu-surface);
  box-shadow: var(--neu-raise-xs);
  color: var(--neu-text-strong);
}

/* --------------------------------------------------------------------------
   6. FORM CONTROLS — carved into the material
   -------------------------------------------------------------------------- */

.neu-field { display: flex; flex-direction: column; gap: var(--neu-sp-2); }

.neu-label,
.neu-field > label {
  font-size: var(--neu-text-xs);
  font-weight: var(--neu-weight-semi);
  letter-spacing: var(--neu-tracking-wide);
  text-transform: uppercase;
  color: var(--neu-text-subtle);
}

.neu-input,
.neu-select,
.neu-textarea {
  width: 100%;
  min-height: 2.75rem;
  padding: 0.7rem var(--neu-sp-4);
  border: 0;
  border-radius: var(--neu-r-md);
  background: var(--neu-surface-sunken);
  box-shadow: var(--neu-press-sm);
  color: var(--neu-field-text);
  font-family: inherit;
  font-size: var(--neu-text-md);
  line-height: 1.4;
  -webkit-appearance: none;
  appearance: none;
  transition: box-shadow var(--neu-dur-2) var(--neu-ease),
              background-color var(--neu-dur-2) var(--neu-ease);
}
.neu-textarea { min-height: 7rem; resize: vertical; line-height: var(--neu-leading-normal); }

.neu-input::placeholder,
.neu-textarea::placeholder { color: var(--neu-placeholder); }

.neu-input:hover, .neu-select:hover, .neu-textarea:hover { box-shadow: var(--neu-press); }

.neu-input:focus, .neu-select:focus, .neu-textarea:focus {
  outline: none;
  background: var(--neu-surface-sunken);
  box-shadow: var(--neu-press), var(--neu-ring);
}
.neu-input:disabled, .neu-select:disabled, .neu-textarea:disabled {
  opacity: 0.55;
  cursor: not-allowed;
  box-shadow: var(--neu-press-xs);
}
.neu-input[aria-invalid='true'], .neu-input.is-invalid {
  box-shadow: var(--neu-press), 0 0 0 var(--neu-focus-ring-w) var(--neu-danger-soft);
}

/* select chevron */
.neu-select {
  padding-right: var(--neu-sp-9);
  background-image:
    linear-gradient(45deg, transparent 50%, currentColor 50%),
    linear-gradient(135deg, currentColor 50%, transparent 50%);
  background-position:
    calc(100% - 1.35rem) calc(50% + 1px),
    calc(100% - 1rem) calc(50% + 1px);
  background-size: 6px 6px, 6px 6px;
  background-repeat: no-repeat;
  cursor: pointer;
}
.neu-select option { background: var(--neu-surface-raised); color: var(--neu-text); }

/* input with leading icon */
.neu-input-group { position: relative; display: flex; align-items: center; width: 100%; }
.neu-input-group > .material-icons,
.neu-input-group > .material-symbols-outlined,
.neu-input-group > .neu-input-group__icon {
  position: absolute;
  left: var(--neu-sp-4);
  display: grid;
  place-items: center;
  font-size: 1.15rem;
  color: var(--neu-text-subtle);
  pointer-events: none;
  transition: color var(--neu-dur-2) var(--neu-ease);
}
.neu-input-group > input { padding-left: var(--neu-sp-9); }
.neu-input-group:focus-within > .material-icons,
.neu-input-group:focus-within > .material-symbols-outlined,
.neu-input-group:focus-within > .neu-input-group__icon { color: var(--neu-accent); }

.neu-help { font-size: var(--neu-text-xs); color: var(--neu-text-subtle); }
.neu-error { font-size: var(--neu-text-xs); color: var(--neu-danger); }

/* checkbox / radio — pressed well that fills when checked */
.neu-check {
  display: inline-flex;
  align-items: center;
  gap: var(--neu-sp-3);
  cursor: pointer;
  font-size: var(--neu-text-md);
  color: var(--neu-text);
  user-select: none;
}
.neu-check input[type='checkbox'],
.neu-check input[type='radio'] {
  position: relative;
  flex: 0 0 auto;
  width: 1.35rem;
  height: 1.35rem;
  margin: 0;
  border: 1px solid var(--neu-text-faint);
  border-radius: var(--neu-r-xs);
  background: var(--neu-surface-sunken);
  box-shadow: var(--neu-press-sm);
  cursor: pointer;
  -webkit-appearance: none;
  appearance: none;
  transition: box-shadow var(--neu-dur-2) var(--neu-ease),
              background-color var(--neu-dur-2) var(--neu-ease);
}
.neu-check input[type='radio'] { border-radius: var(--neu-r-circle); }
.neu-check input:checked {
  background: var(--neu-accent);
  box-shadow: var(--neu-raise-xs);
}
.neu-check input[type='checkbox']:checked::after {
  content: '';
  position: absolute;
  left: 0.46rem; top: 0.22rem;
  width: 0.32rem; height: 0.62rem;
  border: solid var(--neu-accent-on);
  border-width: 0 2px 2px 0;
  transform: rotate(43deg);
}
.neu-check input[type='radio']:checked::after {
  content: '';
  position: absolute;
  inset: 0.38rem;
  border-radius: 50%;
  background: var(--neu-accent-on);
}
.neu-check input:focus-visible { box-shadow: var(--neu-press-sm), var(--neu-ring); outline: none; }

/* switch */
.neu-switch { position: relative; display: inline-flex; align-items: center; cursor: pointer; }
.neu-switch input {
  position: absolute; opacity: 0; width: 0; height: 0; margin: 0;
}
.neu-switch__track {
  position: relative;
  display: block;
  width: 3.25rem;
  height: 1.75rem;
  border-radius: var(--neu-r-pill);
  background: var(--neu-surface-sunken);
  box-shadow: var(--neu-press-sm);
  transition: background-color var(--neu-dur-3) var(--neu-ease),
              box-shadow var(--neu-dur-3) var(--neu-ease);
}
.neu-switch__track::after {
  content: '';
  position: absolute;
  top: 0.22rem; left: 0.22rem;
  width: 1.31rem; height: 1.31rem;
  border-radius: 50%;
  background: var(--neu-surface-raised);
  box-shadow: var(--neu-raise-xs);
  transition: transform var(--neu-dur-3) var(--neu-ease-spring),
              background-color var(--neu-dur-3) var(--neu-ease);
}
.neu-switch input:checked + .neu-switch__track { background: var(--neu-accent-soft); }
.neu-switch input:checked + .neu-switch__track::after {
  transform: translateX(1.5rem);
  background: var(--neu-accent);
}
.neu-switch input:focus-visible + .neu-switch__track { box-shadow: var(--neu-press-sm), var(--neu-ring); }

/* range */
.neu-range,
input[type='range'].neu-range {
  width: 100%;
  height: 1.5rem;
  background: transparent;
  -webkit-appearance: none;
  appearance: none;
  cursor: pointer;
}
.neu-range::-webkit-slider-runnable-track {
  height: 0.5rem;
  border-radius: var(--neu-r-pill);
  background: var(--neu-surface-sunken);
  box-shadow: var(--neu-press-xs);
}
.neu-range::-webkit-slider-thumb {
  -webkit-appearance: none;
  appearance: none;
  width: 1.25rem; height: 1.25rem;
  margin-top: -0.375rem;
  border-radius: 50%;
  background: var(--neu-surface-raised);
  box-shadow: var(--neu-raise-xs);
  transition: transform var(--neu-dur-2) var(--neu-ease-spring), box-shadow var(--neu-dur-2) var(--neu-ease);
}
.neu-range::-webkit-slider-thumb:hover { transform: scale(1.12); box-shadow: var(--neu-raise-sm); }
.neu-range::-moz-range-track {
  height: 0.5rem; border-radius: var(--neu-r-pill);
  background: var(--neu-surface-sunken); box-shadow: var(--neu-press-xs);
}
.neu-range::-moz-range-thumb {
  width: 1.25rem; height: 1.25rem; border: 0; border-radius: 50%;
  background: var(--neu-surface-raised); box-shadow: var(--neu-raise-xs);
}

/* file / colour */
.neu-input[type='color'] { padding: 0.25rem; min-height: 2.75rem; cursor: pointer; }
.neu-input[type='file'] { padding: 0.55rem var(--neu-sp-3); }
.neu-input[type='file']::file-selector-button {
  margin-right: var(--neu-sp-3);
  padding: 0.4rem var(--neu-sp-4);
  border: 0;
  border-radius: var(--neu-r-sm);
  background: var(--neu-surface);
  box-shadow: var(--neu-raise-xs);
  color: var(--neu-text);
  font: inherit;
  font-size: var(--neu-text-sm);
  font-weight: var(--neu-weight-medium);
  cursor: pointer;
}
.neu-input[type='file']::file-selector-button:hover { box-shadow: var(--neu-raise-sm); }

/* --------------------------------------------------------------------------
   7. TABLES
   -------------------------------------------------------------------------- */

.neu-table-wrap {
  border-radius: var(--neu-r-lg);
  background: var(--neu-surface);
  box-shadow: var(--neu-raise-sm);
  overflow: hidden;
}
.neu-table {
  width: 100%;
  border-collapse: separate;
  border-spacing: 0;
  font-size: var(--neu-text-sm);
  font-variant-numeric: tabular-nums;
}
.neu-table thead th {
  position: sticky;
  top: 0;
  z-index: 2;
  padding: var(--neu-sp-4) var(--neu-sp-5);
  background: var(--neu-surface);
  border-bottom: 1px solid var(--neu-line-strong);
  color: var(--neu-text-subtle);
  font-size: var(--neu-text-2xs);
  font-weight: var(--neu-weight-semi);
  text-align: left;
  text-transform: uppercase;
  letter-spacing: var(--neu-tracking-caps);
  white-space: nowrap;
}
.neu-table tbody td {
  padding: var(--neu-sp-4) var(--neu-sp-5);
  border-bottom: 1px solid var(--neu-line);
  color: var(--neu-text);
  vertical-align: middle;
}
.neu-table tbody tr { transition: background-color var(--neu-dur-2) var(--neu-ease); }
.neu-table tbody tr:hover { background: var(--neu-accent-soft); }
.neu-table tbody tr:last-child td { border-bottom: 0; }
.neu-table--zebra tbody tr:nth-child(even) { background: var(--neu-surface-alt); }
.neu-table--zebra tbody tr:nth-child(even):hover { background: var(--neu-accent-soft); }

/* --------------------------------------------------------------------------
   8. BADGES / CHIPS / PILLS
   -------------------------------------------------------------------------- */

.neu-badge {
  display: inline-flex;
  align-items: center;
  gap: var(--neu-sp-1);
  padding: 0.25rem var(--neu-sp-3);
  border-radius: var(--neu-r-pill);
  background: var(--neu-surface-sunken);
  box-shadow: var(--neu-press-xs);
  color: var(--neu-text-muted);
  font-size: var(--neu-text-2xs);
  font-weight: var(--neu-weight-semi);
  letter-spacing: var(--neu-tracking-wide);
  text-transform: uppercase;
  white-space: nowrap;
}
.neu-badge--success { background: var(--neu-success-soft); color: var(--neu-success); box-shadow: none; }
.neu-badge--warning { background: var(--neu-warning-soft); color: var(--neu-warning); box-shadow: none; }
.neu-badge--danger  { background: var(--neu-danger-soft);  color: var(--neu-danger);  box-shadow: none; }
.neu-badge--info    { background: var(--neu-info-soft);    color: var(--neu-info);    box-shadow: none; }
.neu-badge--accent  { background: var(--neu-accent-soft);  color: var(--neu-accent-text); box-shadow: none; }

.neu-badge--dot::before {
  content: '';
  width: 0.4rem; height: 0.4rem;
  border-radius: 50%;
  background: currentColor;
  box-shadow: 0 0 0 3px color-mix(in srgb, currentColor 22%, transparent);
}

.neu-chip {
  display: inline-flex;
  align-items: center;
  gap: var(--neu-sp-2);
  height: 2rem;
  padding: 0 var(--neu-sp-4);
  border-radius: var(--neu-r-pill);
  background: var(--neu-surface);
  box-shadow: var(--neu-raise-xs);
  color: var(--neu-text-muted);
  font-size: var(--neu-text-sm);
  font-weight: var(--neu-weight-medium);
  cursor: pointer;
  transition: box-shadow var(--neu-dur-2) var(--neu-ease), color var(--neu-dur-2) var(--neu-ease);
}
.neu-chip:hover { box-shadow: var(--neu-raise-sm); color: var(--neu-text-strong); }
.neu-chip.is-active,
.neu-chip[aria-pressed='true'] {
  box-shadow: var(--neu-press-sm);
  background: var(--neu-surface-sunken);
  color: var(--neu-accent-text);
}

/* --------------------------------------------------------------------------
   9. NAVIGATION
   -------------------------------------------------------------------------- */

.neu-nav { display: flex; flex-direction: column; gap: var(--neu-sp-1); }

.neu-nav__item {
  position: relative;
  display: flex;
  align-items: center;
  gap: var(--neu-sp-3);
  padding: 0.68rem var(--neu-sp-4);
  border-radius: var(--neu-r-md);
  color: var(--neu-text-muted);
  font-size: var(--neu-text-md);
  font-weight: var(--neu-weight-medium);
  text-decoration: none;
  white-space: nowrap;
  transition: color var(--neu-dur-2) var(--neu-ease),
              box-shadow var(--neu-dur-2) var(--neu-ease),
              background-color var(--neu-dur-2) var(--neu-ease);
}
.neu-nav__item .material-icons,
.neu-nav__item .material-symbols-outlined {
  font-size: 1.25rem;
  flex: 0 0 auto;
  opacity: 0.85;
  transition: opacity var(--neu-dur-2) var(--neu-ease), transform var(--neu-dur-3) var(--neu-ease-spring);
}
.neu-nav__item:hover {
  color: var(--neu-text-strong);
  box-shadow: var(--neu-raise-xs);
  background: var(--neu-surface);
}
.neu-nav__item:hover .material-icons,
.neu-nav__item:hover .material-symbols-outlined { opacity: 1; transform: translateX(1px); }
.neu-nav__item.active,
.neu-nav__item[aria-current='page'] {
  color: var(--neu-accent-text);
  background: var(--neu-surface-sunken);
  box-shadow: var(--neu-press-sm);
}
.neu-nav__item.active::before {
  content: '';
  position: absolute;
  left: 0.32rem; top: 50%;
  width: 3px; height: 1.1rem;
  border-radius: var(--neu-r-pill);
  background: var(--neu-accent);
  transform: translateY(-50%);
}

/* --------------------------------------------------------------------------
   10. FEEDBACK — alerts, empty states, spinners, progress
   -------------------------------------------------------------------------- */

.neu-alert {
  display: flex;
  gap: var(--neu-sp-3);
  padding: var(--neu-sp-4) var(--neu-sp-5);
  border-radius: var(--neu-r-md);
  background: var(--neu-surface);
  box-shadow: var(--neu-raise-xs);
  color: var(--neu-text);
  font-size: var(--neu-text-md);
  border-left: 3px solid var(--neu-text-faint);
}
.neu-alert--success { border-left-color: var(--neu-success); background: var(--neu-success-soft); box-shadow: none; }
.neu-alert--warning { border-left-color: var(--neu-warning); background: var(--neu-warning-soft); box-shadow: none; }
.neu-alert--danger  { border-left-color: var(--neu-danger);  background: var(--neu-danger-soft);  box-shadow: none; }
.neu-alert--info    { border-left-color: var(--neu-info);    background: var(--neu-info-soft);    box-shadow: none; }

.neu-empty {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: var(--neu-sp-4);
  padding: var(--neu-sp-10) var(--neu-sp-6);
  border-radius: var(--neu-r-xl);
  background: var(--neu-surface);
  box-shadow: var(--neu-press-sm);
  text-align: center;
}
.neu-empty__icon {
  display: grid;
  place-items: center;
  width: 4.5rem; height: 4.5rem;
  border-radius: var(--neu-r-circle);
  background: var(--neu-surface);
  box-shadow: var(--neu-raise-sm);
  color: var(--neu-text-subtle);
  font-size: 2rem;
}
.neu-empty__title { margin: 0; font-size: var(--neu-text-lg); color: var(--neu-text-strong); }
.neu-empty__body { margin: 0; max-width: 34rem; color: var(--neu-text-muted); font-size: var(--neu-text-md); }

.neu-spinner {
  width: 1.5rem; height: 1.5rem;
  border-radius: 50%;
  border: 2px solid var(--neu-line-strong);
  border-top-color: var(--neu-accent);
  animation: neu-spin 720ms linear infinite;
}
@keyframes neu-spin { to { transform: rotate(360deg); } }

.neu-progress {
  height: 0.5rem;
  border-radius: var(--neu-r-pill);
  background: var(--neu-surface-sunken);
  box-shadow: var(--neu-press-xs);
  overflow: hidden;
}
.neu-progress__bar {
  height: 100%;
  border-radius: var(--neu-r-pill);
  background: var(--neu-accent);
  transition: width var(--neu-dur-4) var(--neu-ease);
}

/* skeleton shimmer */
.neu-skeleton {
  position: relative;
  border-radius: var(--neu-r-sm);
  background: var(--neu-surface-sunken);
  box-shadow: var(--neu-press-xs);
  overflow: hidden;
}
.neu-skeleton::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(90deg, transparent, var(--neu-shadow-light-soft), transparent);
  animation: neu-shimmer 1.4s var(--neu-ease-in-out) infinite;
}
@keyframes neu-shimmer { from { transform: translateX(-100%); } to { transform: translateX(100%); } }

/* --------------------------------------------------------------------------
   11. OVERLAYS — modal, popover, tooltip
   -------------------------------------------------------------------------- */

.neu-scrim {
  position: fixed;
  inset: 0;
  z-index: var(--neu-z-overlay);
  background: var(--neu-scrim);
  backdrop-filter: blur(6px) saturate(120%);
  -webkit-backdrop-filter: blur(6px) saturate(120%);
  animation: neu-fade var(--neu-dur-3) var(--neu-ease);
}
.neu-modal {
  position: fixed;
  top: 50%; left: 50%;
  z-index: var(--neu-z-modal);
  width: min(38rem, calc(100vw - 2.5rem));
  max-height: calc(100vh - 4rem);
  overflow: auto;
  padding: var(--neu-sp-7);
  border-radius: var(--neu-r-xl);
  background: var(--neu-surface);
  box-shadow: var(--neu-float-lg);
  transform: translate(-50%, -50%);
  animation: neu-pop var(--neu-dur-3) var(--neu-ease-out);
}
.neu-popover {
  z-index: var(--neu-z-tooltip);
  min-width: 12rem;
  padding: var(--neu-sp-2);
  border-radius: var(--neu-r-md);
  background: var(--neu-surface);
  box-shadow: var(--neu-float);
  animation: neu-pop var(--neu-dur-2) var(--neu-ease-out);
}
.neu-tooltip {
  z-index: var(--neu-z-tooltip);
  padding: var(--neu-sp-2) var(--neu-sp-3);
  border-radius: var(--neu-r-xs);
  background: var(--neu-solid);
  color: var(--neu-solid-on);
  font-size: var(--neu-text-xs);
  box-shadow: var(--neu-float);
}

@keyframes neu-fade { from { opacity: 0; } to { opacity: 1; } }
@keyframes neu-pop {
  from { opacity: 0; transform: translate(-50%, -50%) scale(0.96); }
  to   { opacity: 1; transform: translate(-50%, -50%) scale(1); }
}
@keyframes neu-rise {
  from { opacity: 0; transform: translateY(10px); }
  to   { opacity: 1; transform: translateY(0); }
}

.neu-rise { animation: neu-rise var(--neu-dur-4) var(--neu-ease-out) both; }
.neu-rise-1 { animation-delay: 40ms; }
.neu-rise-2 { animation-delay: 80ms; }
.neu-rise-3 { animation-delay: 120ms; }
.neu-rise-4 { animation-delay: 160ms; }

/* --------------------------------------------------------------------------
   12. LAYOUT HELPERS
   -------------------------------------------------------------------------- */

.neu-page {
  position: relative;
  z-index: 1;
  padding: var(--neu-sp-8) var(--neu-sp-8) var(--neu-sp-10);
  max-width: var(--neu-content-max);
  margin-inline: auto;
}
.neu-page-head {
  display: flex;
  flex-wrap: wrap;
  align-items: flex-end;
  justify-content: space-between;
  gap: var(--neu-sp-5);
  margin-bottom: var(--neu-sp-7);
}
.neu-page-head__title {
  margin: 0;
  font-size: var(--neu-text-2xl);
  font-weight: var(--neu-weight-bold);
  letter-spacing: var(--neu-tracking-tight);
  color: var(--neu-text-strong);
}
.neu-page-head__sub {
  margin: var(--neu-sp-2) 0 0;
  color: var(--neu-text-muted);
  font-size: var(--neu-text-md);
}
.neu-page-head__actions { display: flex; flex-wrap: wrap; align-items: center; gap: var(--neu-sp-3); }

.neu-grid { display: grid; gap: var(--neu-sp-5); }
.neu-grid--2 { grid-template-columns: repeat(auto-fit, minmax(20rem, 1fr)); }
.neu-grid--3 { grid-template-columns: repeat(auto-fit, minmax(16rem, 1fr)); }
.neu-grid--4 { grid-template-columns: repeat(auto-fit, minmax(13rem, 1fr)); }
.neu-grid--tiles { grid-template-columns: repeat(auto-fill, minmax(15rem, 1fr)); }

.neu-stack { display: flex; flex-direction: column; gap: var(--neu-sp-4); }
.neu-row { display: flex; align-items: center; gap: var(--neu-sp-3); flex-wrap: wrap; }
.neu-row--between { justify-content: space-between; }
.neu-row--end { justify-content: flex-end; }
.neu-spacer { flex: 1 1 auto; }

/* Text helpers */
.neu-muted { color: var(--neu-text-muted); }
.neu-subtle { color: var(--neu-text-subtle); }
.neu-eyebrow {
  font-size: var(--neu-text-2xs);
  font-weight: var(--neu-weight-semi);
  text-transform: uppercase;
  letter-spacing: var(--neu-tracking-caps);
  color: var(--neu-text-subtle);
}
.neu-numeric { font-variant-numeric: tabular-nums; }
.neu-truncate { overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }

/* Embedded sports property fragment */
.team-colors-panel {
  width: min(100%, 30rem);
  margin: var(--neu-sp-5) auto;
}
.team-colors-panel__head { align-items: flex-start; }
.team-colors-panel__heading {
  display: grid;
  gap: var(--neu-sp-1);
}
.team-colors-panel__icon {
  display: grid;
  place-items: center;
  flex: 0 0 auto;
  width: 3rem;
  height: 3rem;
  border-radius: var(--neu-r-circle);
  color: var(--neu-accent);
  background: var(--neu-surface);
  box-shadow: var(--neu-raise-sm);
}
.team-colors-panel__picker-well { padding: var(--neu-sp-7); }
#my-color-picker-container {
  display: grid;
  min-height: 13rem;
  place-items: center;
}
.team-colors-panel .reinvented-color-wheel {
  box-shadow: var(--neu-raise-sm);
  transition: box-shadow var(--neu-dur-3) var(--neu-ease),
              transform var(--neu-dur-3) var(--neu-ease);
}
.team-colors-panel .reinvented-color-wheel:hover {
  box-shadow: var(--neu-raise);
  transform: scale(1.01);
}
.team-colors-panel .reinvented-color-wheel--hue-handle,
.team-colors-panel .reinvented-color-wheel--sv-handle {
  border-color: var(--neu-surface-raised);
  box-shadow: 0 0 0 1px var(--neu-line-strong), var(--neu-raise-xs);
}

/* A11y */
.neu-sr-only {
  position: absolute !important;
  width: 1px; height: 1px;
  padding: 0; margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

/* --------------------------------------------------------------------------
   13. THEME TOGGLE (shared control used by every layout)
   -------------------------------------------------------------------------- */

.neu-theme-toggle {
  position: relative;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 2.75rem; height: 2.75rem;
  border: 0;
  border-radius: var(--neu-r-circle);
  background: var(--neu-surface);
  box-shadow: var(--neu-raise-sm);
  color: var(--neu-text-muted);
  cursor: pointer;
  overflow: hidden;
  transition: box-shadow var(--neu-dur-2) var(--neu-ease), color var(--neu-dur-2) var(--neu-ease);
}
.neu-theme-toggle:hover { box-shadow: var(--neu-raise); color: var(--neu-text-strong); }
.neu-theme-toggle:active { box-shadow: var(--neu-press-sm); }
.neu-layout-theme {
  position: fixed;
  top: var(--neu-sp-4);
  right: var(--neu-sp-4);
  z-index: var(--neu-z-sticky);
}
.neu-theme-toggle .material-icons { font-size: 1.25rem; transition: transform var(--neu-dur-4) var(--neu-ease-spring), opacity var(--neu-dur-2) var(--neu-ease); }
.neu-theme-toggle__sun, .neu-theme-toggle__moon { position: absolute; }
:root[data-theme='dark'] .neu-theme-toggle__sun { opacity: 1; transform: rotate(0) scale(1); }
:root[data-theme='dark'] .neu-theme-toggle__moon { opacity: 0; transform: rotate(-90deg) scale(0.4); }
:root[data-theme='light'] .neu-theme-toggle__sun { opacity: 0; transform: rotate(90deg) scale(0.4); }
:root[data-theme='light'] .neu-theme-toggle__moon { opacity: 1; transform: rotate(0) scale(1); }

/* Language selector ------------------------------------------------------ */
.neu-language-menu {
  position: relative;
  z-index: var(--neu-z-tooltip);
  display: inline-flex;
  min-width: 0;
  flex: 0 0 auto;
  color: var(--neu-text);
  font-family: var(--neu-font-sans);
}

.neu-language-menu__trigger,
.neu-language-menu__options > button {
  display: inline-flex;
  align-items: center;
  gap: var(--neu-sp-2);
  min-height: 2.5rem;
  border: 1px solid var(--neu-line);
  background: var(--neu-surface);
  color: var(--neu-text);
  font: inherit;
  cursor: pointer;
}

.neu-language-menu__trigger {
  width: max-content;
  max-width: 12rem;
  padding: 0.4rem var(--neu-sp-3);
  border-radius: var(--neu-r-pill);
  box-shadow: var(--neu-raise-xs);
  transition: box-shadow var(--neu-dur-2) var(--neu-ease),
              transform var(--neu-dur-1) var(--neu-ease),
              color var(--neu-dur-2) var(--neu-ease);
}

.neu-language-menu__trigger:hover {
  box-shadow: var(--neu-raise-sm);
  color: var(--neu-text-strong);
  transform: translateY(-1px);
}

.neu-language-menu__trigger:active {
  box-shadow: var(--neu-press-sm);
  transform: translateY(0);
}

.neu-language-menu__trigger:focus-visible,
.neu-language-menu__options > button:focus-visible {
  outline: 2px solid var(--neu-focus);
  outline-offset: 2px;
}

.neu-language-menu__flag {
  flex: 0 0 auto;
  font-size: 1.1rem;
  line-height: 1;
}

.neu-language-menu__current {
  min-width: 0;
  overflow: hidden;
  font-size: var(--neu-text-xs);
  font-weight: var(--neu-weight-semi);
  text-overflow: ellipsis;
  white-space: nowrap;
}

.neu-language-menu__chevron {
  flex: 0 0 auto;
  font-size: 1rem;
  transition: transform var(--neu-dur-2) var(--neu-ease);
}

.neu-language-menu__trigger[aria-expanded='true'] .neu-language-menu__chevron {
  transform: rotate(180deg);
}

.neu-language-menu__options {
  position: absolute;
  top: calc(100% + var(--neu-sp-2));
  right: 0;
  z-index: var(--neu-z-tooltip);
  display: grid;
  width: max-content;
  min-width: 12rem;
  padding: var(--neu-sp-2);
  border: 1px solid var(--neu-line-strong);
  border-radius: var(--neu-r-md);
  background: var(--neu-surface-raised);
  box-shadow: var(--neu-float);
}

.neu-language-menu__options[hidden] { display: none; }

.neu-language-menu__options > button {
  width: 100%;
  padding: var(--neu-sp-2) var(--neu-sp-3);
  border-color: transparent;
  border-radius: var(--neu-r-sm);
  box-shadow: none;
  font-size: var(--neu-text-sm);
  text-align: left;
}

.neu-language-menu__options > button:hover,
.neu-language-menu__options > button[aria-checked='true'] {
  background: var(--neu-surface-sunken);
  box-shadow: var(--neu-press-xs);
  color: var(--neu-text-strong);
}

.neu-language-menu__options > button[aria-checked='true']::after {
  width: 0.3rem;
  height: 0.58rem;
  margin-left: auto;
  border: solid currentColor;
  border-width: 0 2px 2px 0;
  content: '';
  transform: rotate(43deg);
}

.neu-language-menu--floating {
  position: fixed;
  top: var(--neu-sp-4);
  right: 4.5rem;
  z-index: var(--neu-z-topbar);
}

@media (max-width: 34rem) {
  .neu-language-menu__current { display: none; }
  .neu-language-menu__trigger { width: 2.75rem; justify-content: center; padding-inline: 0; }
  .neu-language-menu__chevron { display: none; }
}

/* Show/hide by theme */
:root[data-theme='light'] .neu-only-dark { display: none !important; }
:root[data-theme='dark']  .neu-only-light { display: none !important; }

/* --------------------------------------------------------------------------
   14. PRINT
   -------------------------------------------------------------------------- */

@media print {
  body::before { display: none; }
  body { background: #fff; color: #000; }
  .neu-card, .neu-panel, .neu-well, .neu-table-wrap {
    box-shadow: none !important;
    border: 1px solid #ccc;
  }
  .neu-no-print, .sidebar, .topbar, .neu-theme-toggle, .neu-language-menu { display: none !important; }
}

/* Freeze transitions for one frame while the theme attribute swaps. */
:root[data-theme-swapping] *,
:root[data-theme-swapping] *::before,
:root[data-theme-swapping] *::after {
  transition: none !important;
}