:root {
    --clr-accent-400: hsl(12, 88%, 59%);
    --clr-accent-300: hsl(12, 50%, 75%);
    --clr-accent-500: hsl(12, 88%, 40%);
    --clr-accent-100: hsl(13,100%, 96%);

    --clr-primary-400: hsl(228, 39%, 23%);

    --clr-neutral-900: hsl(232, 12%, 13%);
    --clr-neutral-100: hsl(0, 0%, 100%);
    --clr-neutral-200: rgb(223, 223, 223);

    --ff-primary:'Be Vietnam Pro', sans-serif;

    --ff-body:var(--ff-primary);
    --ff-heading: var(--ff-primary);

    --fw-regular: 400;
    --fe-semi-bold: 500;
    --fw-bold: 700;

    --fs-300: .8125rem;
    --fs-400: .875rem;
    --fs-500: .9375rem;
    --fs-600: 1rem; 
    --fs-700: 1.875rem;
    --fs-800: 2.5rem;
    --fs-900: 3.5rem;

    --fs-body: var(--fs-400);
    --fs-primary-heading: var(--fs-800);
    --fs-secondary-heading: var(--fs-700);
    --fs-nav: var(--fs-500);
    --fs-button: var(--fs-300);

    --size-100: .25rem;
    --size-200: .5rem;
    --size-300: .75rem;
    --size-400: 1rem;
    --size-500: 1.5rem;
    --size-600: 2rem;
    --size-700: 3rem;
    --size-800: 4rem;
    --size-900: 5rem;
}

@media(min-width: 50rem){
    :root{
        --fs-body: var(--fs-500);
        --fs-primary-heading: var(--fs-900);
        --fs-seconday-heading: var(--fs-800);
        --fs-nav: var(--fs-300);
    }
}


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

/* Remove default margin */

*{
    margin: 0;
    padding: 0;
    font: inherit;
}

/* Remove list styles on ul, ol elements with a list role, which suggests default styling will be removed */
ul[role='list'],
ol[role='list'] {
  list-style: none;
}

/* Set core root defaults */
html:focus-within {
  scroll-behavior: smooth;
}

html,
body{
    height: 100%;
}

/* Set core body defaults */
body {
  text-rendering: optimizeSpeed;
  line-height: 1.5;
}

/* A elements that don't have a class get default styles */
a:not([class]) {
  text-decoration-skip-ink: auto;
}

/* Make images easier to work with */
img,
picture,
svg {
  max-width: 100%;
  display: block;
}


/* Remove all animations, transitions and smooth scroll for people that prefer not to see them */
@media (prefers-reduced-motion: reduce) {
  html:focus-within {
   scroll-behavior: auto;
  }
  
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
}




body{
  font-size: var(--ff-body);
  font-family: var(--ff-body);
  color: var(--clr-primary-400);
}

p:not([class]){
  opacity: 0.7;
  max-width: 32ch;
}
p[data-width = "wide"]{
  max-width: 45ch;
}
/* button */
.button{
  display: inline-flex;
  cursor: pointer;
  text-decoration: none;
  border: 0;
  border-radius: 100vmax;
  padding: 1em 2.5em;
  font-weight: var(--fw-bold);
  font-size: var(--fs-button);
  line-height: 1;
  color: var(--clr-neutral-100);
  background-color: var(--clr-accent-400);
  box-shadow: 0 1.125em 1em -1em var(--clr-accent-500);
}




.button:hover,
.button:focus-visible{
  background-color: var(--clr-accent-300);
}


.button[data-type="inverted"]{
  background-color: var(--clr-neutral-100);
  color: var(--clr-accent-400)
}

.button[data-shadow="none"]{
  box-shadow: none;

}


.button[data-type="inverted"]:hover, 
.button[data-type="inverted"]:focus-visible{
  background-color: var(--clr-neutral-100);
  color: var(--clr-accent-300);
}


/* navigation */

.primary-header{
  padding-top: var(--size-700);
}

.nav-wrapper{
  display: flex;
  justify-content: space-between;
  align-items: center;
}


.mobile-nav-toggle{
  display: none;
}
.nav-list{
  font-size: var(--fs-nav);
}

.nav-list{
  display: flex;
  gap: clamp(var(--size-300), 2vw, var(--size-600));
  font-weight: var(--fw-bold);
}

.nav-list a{
  text-decoration: none;
  color: white;
  color: var(--clr-primary-400);
}
.nav-list a:hover,
.nav-lista:focus{
  text-decoration: none;
  color: white;
  color: var(--clr-accent-400);
}


@media (max-width: 50em){

  .primary-header[data-overlay]{
    position: relative;
    z-index: 999;
  }
  .primary-navigation{
    display: none;

    position: fixed;
    padding: var(--size-700);
    inset: 7rem var(--size-400) auto;
    min-width: 20rem;
    margin-inline: auto;
    background-color: var(--clr-neutral-100);
    border-radius: var(--size-100);
    box-shadow: 0 0 0.75rem rgb(0, 0, 0, 0.05);
  }

  .primary-header[data-overlay]::before{
    content:'';
    position: fixed;
    inset: 0;
    background-image: linear-gradient(rgb(0 0 0 / 0), rgb(0 0 0 / 0.8));
  }
  


  .nav-list{
    display: grid;
    gap: var(--size-600);
    text-align: center;
    font-weight: var(--fw-bold);
  }

  .nav-list a{
    text-decoration: none;
    color: white;
    color: var(--clr-primary-400);
  }
  .nav-list a:hover,
  .nav-lista:focus{
    text-decoration: none;
    color: white;
    color: var(--clr-accent-400);
  }

  .primary-navigation[data-visible]{
    display: block;
  }

.mobile-nav-toggle{
  display: block;
  position: fixed;
  top: var(--size-700);
  right: var(--size-400);
  cursor: pointer;
  background: transparent;
  border: 0;
  padding: 0.5em;
  width: 1.65rem;
  aspect-ratio: 1;

  background-image: url(menu-icon.svg);
  background-size: contain;
  background-repeat: no-repeat;
  background-position: center;
}

.mobile-nav-toggle[aria-expanded="true"]{
  width: 2rem;
  background-image: url(close-button.svg);
}
}


/* foooter-nav */
.footer-nav{
  columns: 2;
  /* gap: clamp(var(--size-200), 15vw, var(--size-900)) ; */
}

.footer-nav a{
  color: var(--clr-neutral-100);
  text-decoration: none;
}


.footer-nav a:is(:hover, :focus){
  color: var(--clr-accent-400);
  text-decoration: none;
}

/* socila-list */

.primary-footer-wrapper{
  display: grid;
  gap: var(--size-700);
  grid-template-areas:
  "form"
  "nav"
  "logo-social";
}

 
.primary-footer-logo-social{
  grid-area: logo-social;
  /* display: flex;
  flex-direction: column-reverse; */
  align-items: center;
  gap: var(--size-700);
}


.primary-footer-nav{
  grid-area: nav;
}

.primary-footer-form{
  grid-area: form;
  display: grid;
  align-content: space-between;
}

.primary-footer-form{
  grid-area: form;
}

.primary-footer form{
  display: flex;
  gap: var(--size-100);
} 

input:where([type="text"], [type="email"]){
  border-radius: 100vw;
  border: 0;
  padding: var(--size-200) var(--size-400);
}

@media(min-width:50em){
  .primary-footer-wrapper {
    grid-template-areas: "logo-social nav form";
  }
}


@media(max-width: 50em){
  .primary-footer-wrapper > *{
  margin-inline: auto;
}
.primary-footer-logo-social{
  display: flex;
  flex-direction: column-reverse;
}
}




.social-list{
   display: flex;
   gap: var(--size-600);
}

.social-list a{
  color: var(--clr-accent-100);
}

.social-list a:hover{
  color: var(--clr-accent-400);
}

@media(min-width: 50em) {
  
.social-list{
  display: flex;
  gap: var(--size-500);
  margin-top: var(--size-900);
}
}


/* general styling */

.container{
  --max-width: 1110px;
  --container-padding: 1rem;
  
  width: min(var(--max-width), 100% - (var(--container-padding)*2)); 
  margin-inline: auto;

}
.push-right{
  margin-left: auto;
}


.event-columns{
  display: grid;
  gap: 1rem;
}

@media (min-width: 50em) {
  .event-columns{
    grid-auto-flow: column;
    grid-auto-columns: 1fr;
  }
}

.vertical-align-center{
  align-items: center;
}
/* 
.justify-self-end{
  justify-self: end;
} */

@media(min-width: 50em){
  .justify-self-end-md{
    justify-self: end;
  }
    
}

:where(.flow :not(:first-child)){
  margin-top: var(--flow-spacer , 3em);
}

.text-center{
  text-align: center;
}
.text-center p{
  margin-inline: auto;
}

@media(max-width: 50em){
.text-center-sm-only{
  text-align: center;
}
.text-center-sm-only p{
  margin-inline: auto;
}
}


/* numbered items */

.numbered-items{
  counter-reset: count;
  width: fit-content;
  margin-inline: auto;
}

.numbered-items li{
  counter-increment: count;
}


.numbered-items div {
  display: grid;
  position: relative;
  align-items: center;
  column-gap: var(--size-300);
  grid-template-columns: min-content 1fr;
}


.numbered-items_title{
  grid-row: 1/2;
  grid-column: 2/3;
  line-height: 1;
}

.numbered-items_body{
  grid-column: 1/-1;
}

@media(min-width: 30em){
  .numbered-items_body{
    grid-column: 2/-1;
  }
}

.numbered-items div::before,
.numbered-items div::after {
  height: 40px;
}

.numbered-items div::before{
  content: "0" counter(count);
  display: flex;
  align-items: center;
  color: var(--clr-neutral-100);
  font-weight: var(--fw-bold);
  background-color: var(--clr-accent-400);
  padding: 0 var(--size-500);
  border-radius: 100vw;
  grid-row: 1 / 2;
  grid-column: 1 / 2;
}

@media(max-width: 30em){
.numbered-items div::after{
    --bg: var(--clr-accent-100);
    content: "";
    display: block;
    z-index: -1;
    border-radius: 100vw 0 0 100vw;
    grid-column: 1 / -1;
    grid-row: 1 / 2;
    box-shadow: 5em 0 0 var(--bg);
    background: var(--bg);
}}



@media(min-width: 50em){
  
.numbered-items_body{
  grid-column: 2/-1;
}
}

/* slider */

.slider {
  display: flex;
  gap: var(--size-600);
  list-style: none;
}

.ally-slider-container{
  margin-block: var(--size-700);
  margin-inline: var(--size-400);
}

.slider > * {
  position: relative;
  flex: 0 0 auto;
  width: 100%;
}
@media(min-width: 30em){
  .slider {
    scroll-padding-inline: 25px;
  }

  .a11y-slider-container {
    margin-inline: 0;
  }
  
  .slider > * {
    width: 50%;
  }
}
@media(min-width: 50em){
  .slider > * {
    width: 37%;
  }
}

.slider-content{
  border-radius: var(--size-100);
  padding: var(--size-700) var(--size-600) var(--size-600);
  background: var(--clr-neutral-200);
}

.slider img{
  width: var(--size-800);
  position: relative;
  margin-inline: auto;
  top: calc(var(--size-800)/2);
  /* transform: translateY(50%); */
}

.a11y-slider-dots {
  display: flex;
  justify-content: center;
  margin: var(--size-500);
  gap: var(--size-300);
}

  
.a11y-slider-dots li {
    display: block;
    width: 12px;
    height: 12px;
    padding: 0;
}

.ally-slide-dots li button{
  display: block;
  font-size: 0;
  text-indent: -9999px;
  background: transparent;
  border: 1px solid var(--clr-accent-400);
  width: 100%;
  height: 100%;
  border-radius: 100%;
}

.ally-slide-dots li button.active{
  background: var(--clr-accent-400);
}

/* pos */
@media (max-width:50em){
.pos{
  order: -1;
}
}

/* utility classes are placed at the end so that it always win against other */
/* found visually hidden attribute from https://a11y-guidelines.orange.com/en/articles/accessible-hiding/ as guided by Kevin Powell in "Build a responsive website with HTML & CSS | Part Four: The navigation" */

/* utility classes */
.cta{
  position: relative;
  isolation: isolate;
  text-align: center;
}

@media(min-width: 50em){
  .cta{
    text-align: left;
  }
}

.cta::after{
  content: "";
  position: absolute;
  z-index: -1;
  inset: 0;
  background-repeat: no-repeat;
  background-image: url(Robotic-arm.svg);
  background-position: 0rem;
  opacity: 0.2;
}

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

.text-primary-400{
    color: var(--clr-primary-400);
}
.text-accent-400{
  color: var(--clr-accent-400);
}
.text-accent-100{
  color: var(--clr-accent-100);
}
.text-neutral-100 {
  color: var(--clr-neutral-100);
}
.text-neutral-900 {
  color: var(--clr-neutral-900);
}

.bg-primary-400{
    background-color: var(--clr-primary-400);
}

.bg-accent-400{
  background-color: var(--clr-accent-400);
}
.bg-accent-100{
  background-color: var(--clr-accent-100);
}
.bg-neutral-100 {
  background-color: var(--clr-neutral-100);
}
.bg-neutral-900 {
  background-color: var(--clr-neutral-900);
}

.fw-bold { font-weight: var(--fw-bold); }
.fw-semi-bold { font-weight: var(--fw-semi-bold);  }
.fw-regular { font-weight: var(--fw-regular); }

.fs-primary-heading {
  font-size: var(--fs-primary-heading);
  line-height: 1.1;
}
.fs-secondary-heading {
  font-size: var(--fs-secondary-heading);
  line-height: 1.1;
}

.fs-300 { font-size: var(--fs-300)}
.fs-400{font-size: var(--fs-400)}
.fs-500{font-size: var(--fs-500)}
.fs-600{font-size: var(--fs-600)}

.padding-block-900{
  padding-block: var(--size-900);
}
.padding-block-700{
  padding-block: var(--size-700);
}
.margin-bottom-700{
  margin-block-end: var(--size-700);
}
.max-auto{
  margin-inline: auto;
}

.display-sm-none{
  display: none;
}

@media(min-width: 50em){
  .display-md-inline-flex{
    display: inline-flex;
  }
}