/* Mentzai depth. Borders do the work; shadows only lift what floats. */
:root, [data-theme="light"] {
  --shadow-sm: 0 1px 2px #0b1b330f, 0 1px 3px #0b1b3314;
  --shadow-md: 0 4px 12px -2px #0b1b331f, 0 2px 4px #0b1b330f;
  --shadow-lg: 0 16px 40px -8px #0b1b3333, 0 4px 8px #0b1b3314;
}
[data-theme="dark"] {
  --shadow-sm: 0 1px 2px #00000066;
  --shadow-md: 0 6px 16px -4px #000000a6;
  --shadow-lg: 0 24px 48px -12px #000000d9;
}