/*-----------------------------*/
/*     Custom Properties       */
/*-----------------------------*/

:root {
    /*   colors   */
    --clr-dark: 230 35% 7%;
    --clr-light: 231 77% 90%;
    --clr-white: 0 0% 100%;
 
    /*   font-sizes   */
    --fs-900: clamp(5rem, 8vw + 1rem, 9.375rem);
    --fs-800: 3.5rem;
    --fs-700: 1.5rem;
    --fs-600: 1.25rem;
    --fs-500: 1rem;
    --fs-400: 0.9375rem;  /* 15px */
    --fs-300: 1rem;
    --fs-200: 0.875rem; /*  14 px */

    /* font-families */
    --ff-serif: "Bellefair", serif;
    --ff-sans-cond: "Barlow Condensed", sans-serif;
    --ff-sans-normal: "Barlow", sans-serif;
}

@media (min-width: 35em) {
    :root {
        --fs-900: 9.375rem;   /* 150px */
        --fs-800: 5rem;
        --fs-700: 2.5rem;
        --fs-600: 1.5rem;
        --fs-500: 1.25rem;
        --fs-400: 1rem;
    }
}

@media (min-width: 48em) {
    :root {
        /* font-sizes */
        --fs-800: 6.25rem;
        --fs-700: 3.5rem;
        --fs-600: 2rem;
        --fs-500: 1.75rem;
        --fs-400: 1.125rem;
    }
}


/*-----------------------------*/
/*     Reset                   */
/*-----------------------------*/


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


/*  Reset margins   */
body,
h1,
h2,
h3,
h4,
h5,
p,
figure,
picture {
    margin: 0;
}

h1,
h2,
h3,
h4,
h5,
h6,
p {
    font-weight: 400;
}

/* set up the body */
body {
    font-family: var(--ff-sans-normal);
    font-size: var(--fs-400);
    color: hsl(var(--clr-white));
    background-color: hsl(var(--clr-dark));
    line-height: 1.5;
    min-height: 100vh;

    display: grid;
    grid-template-rows: min-content 1fr;

    overflow-x: hidden;
}

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

[hidden] { display: none; }

/* make form element easier to work with */
input,
button,
textarea,
select {
    font: inherit;
}

/* remove animations for people who've turned them off */
@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;
  }
}

/* ------------------- */
/* Utility classes     */
/* ------------------- */

/*  general   */

.flex {
    display: flex;
    gap: var(--gap, 2rem);
}

.flex.even-columns > * {
    width: 100%;
    outline: 2px solid limegreen;
}

.grid {
    display: grid;
    gap: var(--gap, 1rem);
}

.d-block {
    display: block;
}

/*---   not a first child   -------------------
.flow > * + * {         
    margin-top: 1rem;
    outline: 1px solid red;
} */

.flow > *:where(:not(:first-child)) {         
    margin-top: var(--flow-space, 1rem);
}

.flow--space-small {
    --flow-space: .75rem;
}

.container {
    padding-inline: 2rem;    
    margin-inline: auto;
    max-width: 80rem;
}

/* .grid-container {
    text-align: center;
    display: grid;
    place-items: center;
    padding-inline: 1rem;

}

.grid-container * {
    max-width: 50ch;
}

@media (min-width: 45rem) {
    .grid-container {
        text-align: left;
        column-gap: var(--container-gap, 2rem);
        grid-template-columns: minmax(1rem, 1fr) repeat(2, minmax(0, 30rem)) minmax(1rem, 1fr);
    }

    .grid-container>*:first-child {
        grid-column: 2;
    }

    .grid-container>*:last-child {
        grid-column: 3;
    }

    .grid-container--home {
        padding-bottom: max(6rem, 20vh);
        align-items: end;
    }
} */

/* .grid-container > *:first-child {
   outline: 1px solid red;
}

.grid-container > *:last-child {
   outline: 1px solid yellow;
}
 */


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

.skip-to-content {
    position: absolute;
    z-index: 9999;
    background: hsl( var(--clr-white) );
    color: hsl( var(--clr-dark) );
    padding: .5em 1em;
    margin-inline: auto;
    transform: translateY(-100%);
    transition: transform 250ms ease-in;
}

.skip-to-content:focus {
    transform: translateY(0);
}

.box {
    background-color: aqua;
    padding: 3rem;
}


/*   colors  */
.bg-dark {background-color: hsl( var(--clr-dark) );}
.bg-accent {background-color: hsl( var(--clr-light) );}
.bg-white {background-color: hsl(var(--clr-white));}

.text-dark {color: hsl(var(--clr-dark));}
.text-accent {color: hsl(var(--clr-light));}
.text-white {color: hsl(var(--clr-white));}


/*  the div a light blue background with a 20% alpha value and white text*/
/* .alfa {background-color: hsl( var(--clr-light) /.2 );} */

/* typography */

.ff-serif { font-family: var(--ff-serif); } 
.ff-sans-cond { font-family: var(--ff-sans-cond); } 
.ff-sans-normal { font-family: var(--ff-sans-normal); } 

.letter-spacing-1 { letter-spacing: 4.75px; } 
.letter-spacing-2 { letter-spacing: 2.7px; } 
.letter-spacing-3 { letter-spacing: 2.35px; } 

.uppercase { text-transform: uppercase; }

.fs-900 { font-size: var(--fs-900); }
.fs-800 { font-size: var(--fs-800); }
.fs-700 { font-size: var(--fs-700); }
.fs-600 { font-size: var(--fs-600); }
.fs-500 { font-size: var(--fs-500); }
.fs-400 { font-size: var(--fs-400); }
.fs-300 { font-size: var(--fs-300); }
.fs-200 { font-size: var(--fs-200); }


.fs-900,
.fs-800,
.fs-700,
.fs-600 {
    line-height: 1.1;
}

.numbered-title {
    font-family: var(--ff-sans-cond);
    font-size: var(--fs-500);
    text-transform: uppercase;
    letter-spacing: 4.72px;
}

.numbered-title span {
    margin-right: 0.5rem;
    font-weight: 700;
    color: hsl(var(--clr-white) / .25);
}

/*-----------------------------*/
/*     Components              */
/*-----------------------------*/

.large-button {
    font-size: 2rem;
    position: relative;
    display: inline-grid;
    z-index: 1;
    text-decoration: none;
    padding: 0 2rem;
    aspect-ratio: 1;
    place-items: center;
    border-radius: 50%;
}

.large-button::after {
    content: '';
    position: absolute;
    z-index: -1;
    width: 100%;
    height: 100%;
    background: hsl( var(--clr-white) /0.15 );
    border-radius: 50%;
    transition: transform 500ms linear, transform 750ms ease-in-out
}

.large-button:hover::after,
.large-button:focus::after {
    opacity: 1;
    transform: scale(1.5);
}

/*   primary-header */

.logo {
    margin: 1.5rem clamp(1.5rem, 5vw, 3.5rem);
}

.primary-header {
    justify-content: space-between;
    align-items: center;
}

.primary-navigation {
    --gap: clamp(1.5rem, 5vw, 3.5rem);
    --underline-gap: 2rem;
    list-style: none;
    padding: 0;
    margin: 0;
    background: hsl( var(--clr-dark) / 0.95);
}

@supports (backdrop-filter: blur(1rem)) {
    .primary-navigation {
        background: hsl( var(--clr-white) / 0.05);
        backdrop-filter: blur(1.5rem); 
    }
}

.primary-navigation a {
    text-decoration: none;
}

.primary-navigation a > span {
    font-weight: 700;
    margin-right: .5em;
}

.mobile-nav-toggle {
    display: none;
}

@media (max-width: 35rem) {
    .primary-navigation {
        --underline-gap: .5rem;
        position: fixed;
        z-index: 1000;
        inset: 0 0 0 30%;
        list-style: none;
        padding: min(20rem, 15vh) 2rem;
        margin: 0;
        flex-direction: column;
        transform: translateX(100%);
        transition: transform 500ms ease-in-out;
    }

    .primary-navigation[data-visible="true"] {
        transform: translateX(0);
    }

    .primary-navigation.underline-indicators>.active {
        border: 0;
    }

    .mobile-nav-toggle {
        display: block;
        position: absolute;
        z-index: 2000;
        right: 1rem;
        top: 2rem;
        background: transparent;
        background-image: url(./assets/shared/icon-hamburger.svg);
        background-repeat: no-repeat;
        background-position: center;
        width: 1.5rem;
        aspect-ratio: 1;
        border: 0;
    }

    .mobile-nav-toggle[aria-expanded="true"] {
        background-image: url(./assets/shared/icon-close.svg);
    }

    .mobile-nav-toggle:focus-visible {
        outline: 0.2rem solid cadetblue;
        outline-offset: 0.2rem;
    }
}

@media (min-width: 35em) {
    .primary-navigation {
        padding-inline: clamp(3rem, 7vw, 7rem);
    }
}

@media (min-width: 35em) and (max-width: 47.999em) {    
     .primary-navigation a > span {
        display: none;
    }
}

@media (min-width: 48em) {

    .primary-header::after {
        content: '';
        display: block;
        position: relative;
        height: 1px;
        width: 100%;
        margin-right: -2.5rem;
        background: hsl( var(--clr-white) / .25);
        order: 1;
    }

    nav {
        order: 2;
    }

    .primary-navigation {
        margin-block: 2rem;
    }
}

.underline-indicators > * {
    cursor: pointer;
    padding: var(--underline-gap, .5rem) 0;
    border: 0;
    border-bottom: .2rem solid hsl( var(--clr-white) / 0 );
    background-color: transparent;
}

.underline-indicators > *:hover,
.underline-indicators > *:focus {
    border-color: hsl( var(--clr-white) / 0.5);
}

.underline-indicators > .active,
.underline-indicators > [aria-selected="true"] {
    color: hsl( var(--clr-white) / 1);
    border-color: hsl( var(--clr-white) / 1);
}

.tab-list {
    --gap: 2rem;
}

.dot-indicators > *{
    cursor: pointer;
    border: 0;
    border-radius: 50%;
    aspect-ratio: 1;
    padding: 0.5em;
    background-color: hsl( var(--clr-white)/.25 );
}

/* .dot-indicators > *:hover,
.dot-indicators > *:focus { */

.dot-indicators > *:is(:hover, :focus) {    
    background-color: hsl( var(--clr-white)/.5 );
}

.dot-indicators > [aria-selected="true"] {
    background-color: hsl( var(--clr-white) / 1); 
}

.number-indicators > *{
    cursor: pointer;
    border: 1px solid hsl(var(--clr-white) / .1);
    border-radius: 50%;
    aspect-ratio: 1;
    padding: 0 1em;
    background-color: hsl( var(--clr-white)/.1 );
    font-family: var(--ff-serif);
    font-size: var(--fs-500);
    color: hsl(var(--clr-white));
    /*added: */
    justify-content: center;
}

.number-indicators > *:is(:hover, :focus) {    
    background-color: hsl( var(--clr-white)/.5 );
     border: 1px solid hsl(var(--clr-white) /.5);
     color: hsl(var(--clr-dark));
}

.number-indicators > [aria-selected="true"] {
    color: hsl(var(--clr-dark));
    border: 1px solid hsl(var(--clr-white) / 1);
    background-color: hsl( var(--clr-white) / 1); 
}


/* ----------------------------- */
/* Page specific background      */
/* ----------------------------- */
body {
    background-size: cover;
    background-position: bottom center;
    background-repeat: no-repeat;
}

/* home */
.home {
    background-image: url(./assets/home/background-home-mobile.jpg);
}

@media (min-width: 35em) {
    .home {
        background-position: center center;
        background-image: url(./assets/home/background-home-tablet.jpg);
    }
}

@media (min-width: 48em) {
    .home {
        background-image: url(./assets/home/background-home-desktop.jpg);
    }
}

/* destination */
.destination {
    background-image: url(./assets/destination/background-destination-mobile.jpg);
}

@media (min-width: 35em) {
    .destination {
        background-position: center center;
        background-image: url(./assets/destination/background-destination-tablet.jpg);
    }
}

@media (min-width: 48em) {
    .destination {
        background-image: url(./assets/destination/background-destination-desktop.jpg);
    }
} 

/* crew */
.crew {
    background-image: url(./assets/home/background-crew-mobile.jpg);
}

@media (min-width: 35em) {
    .crew {
        background-position: center center;
        background-image: url(./assets/crew/background-crew-tablet.jpg);
    }
}

@media (min-width: 48em) {
    .crew {
        background-image: url(./assets/crew/background-crew-desktop.jpg);
    }
} 

/* technology */
.technology {
    background-image: url(./assets/technology/background-technology-mobile.jpg);
}

@media (min-width: 35em) {
    .technology {
        background-position: center center;
        background-image: url(./assets/technology/background-technology-tablet.jpg);
    }
}

@media (min-width: 48em) {
    .technology {
        background-image: url(./assets/technology/background-technology-desktop.jpg);
    }
} 

/* ----------------------------- */
/* Layout                        */
/* ----------------------------- */


.grid-container {
    text-align: center;
    display: grid;
    place-items: center;
    padding-inline: 1rem;
    padding-bottom: 4rem;
}

.grid-container p:not([class]) {
    max-width: 50ch;
}

.numbered-title {
    grid-area: title;
}

/* destination layout */

.grid-container--destination {
    --flow-space: 2rem;
    grid-template-areas: 
        'title'
        'image'
        'tabs'
        'content'
}

.grid-container--destination > picture {
    grid-area: image;
    max-width: 60%;
    align-self: start;
}

.grid-container--destination > .tab-list {
    grid-area: tabs;
}

.grid-container--destination > .destination-info {
    grid-area: content;
}

.destination-meta {
    flex-direction: column;
    border-top: 1px solid hsl( var(--clr-white) / .1);
    padding-top: 2.5rem;
    margin-top: 2.5rem;
}

.destination-meta p {
    font-size: 1.75rem;
}

/* crew layout */

.grid-container--crew {
    --flow-space: 2rem;
    grid-template-areas: 
        'title'
        'image'
        'tabs'
        'content';
}

.grid-container--crew > picture {
    grid-area: image;
    max-width: 60%;
    border-bottom: 1px solid hsl( var(--clr-white) / .1);
}

.grid-container--crew > .dot-indicators {
    grid-area: tabs;
}

.grid-container--crew > .crew-details {
    grid-area: content;
}

.crew-details h2 {
    opacity: .5;
}



/* technology layout */

.grid-container--technology {
    --flow-space: 2rem;
    grid-template-areas: 
        'title'
        'image'
        'tabs'
        'content'
}

.grid-container--technology > picture {
  grid-area: image;
  width: calc(100% + 2rem);   /* 1rem слева + 1rem справа */
  max-width: none;
  margin-inline: -1rem;
  justify-self: stretch;
}

.grid-container--technology > picture img {
  width: 100%;
  height: auto;
  object-fit: cover;
}

.grid-container--technology > .number-indicators {
    grid-area: tabs;
}

.grid-container--technology > .technology-details {
    grid-area: content;
}

.technology-details h2 {
    opacity: .5;
}


@media (min-width: 35em) {
    .numbered-title {
        justify-self: start;
        margin-top: 2rem;
    }

    .destination-meta {
        flex-direction: row;
        justify-content: space-evenly;        
    }

    .grid-container--crew {
        padding-bottom: 0;
        grid-template-areas: 
            'title'
            'content'
            'tabs'
            'image';
    }

    .grid-container--technology {
        padding-bottom: 0;
        grid-template-areas: 
            'title'
            'image'
            'tabs'
            'content';
    }
}


@media (min-width: 48em) {
    .grid-container {
        text-align: left;
        column-gap: var(--container-gap, 2rem);
        grid-template-columns: minmax(1rem, 1fr) repeat(2, minmax(0, 30rem)) minmax(1rem, 1fr);
    }

    .grid-container--home {
        padding-bottom: max(6rem, 20vh);
        align-items: end;
    }

    .grid-container--home > *:first-child {
        grid-column: 2;
    }

    .grid-container--home > *:last-child {
        grid-column: 3;
    }

    .grid-container--destination {
        justify-items: start;
        align-content: start;
        grid-template-areas:
            '. title title .'
            '. image tabs .'
            '. image content .';
    }

   .grid-container--destination > picture {
        max-width: 90%;
    }

    .destination-meta {
        --gap: min(6vw, 6rem);
        justify-content: start;
    }

    .grid-container--crew {
        grid-template-columns: minmax(1rem, 1fr) minmax(0, 37rem) minmax(0, 23rem) minmax(1rem, 1fr);
        justify-items: start;
        grid-template-areas: 
            '. title title .'
            '. content image .'
            '. tabs image .';
    }
    
    .grid-container--crew > picture {
        grid-column: span 2;
        align-self: end;
        max-width: 90%;
    }

    
    .grid-container--technology {
        grid-template-columns:
            minmax(1rem, 1fr)
            minmax(0, 6rem)
            minmax(0, 32rem)
            minmax(0, 32rem)
            minmax(1rem, 1fr);
    
        grid-template-areas:
            '. title title title .'
            '. tabs  content image .'
            '. tabs  content image .';
        align-items: start;
        justify-items: start;
        /* column-gap: clamp(1rem, 3vw, 3rem);     */
        column-gap: clamp(0.75rem, 1.5vw, 1.5rem); 
    }

    .grid-container--technology > .number-indicators {
        grid-area: tabs;
        justify-self: start;
    }

    .grid-container--technology > .technology-details {
        grid-area: content;
    }
    
    .grid-container--technology > picture {
        grid-area: image;
        align-self: self-start;
        width: min(40rem, 100%);    /* 32rem */
        max-width: 40rem; /* 32rem; */
        margin: 0 -1rem 0 0;
        grid-column: 4 / -1;
        justify-self: end;
        align-self: start;
    }
    
    .number-indicators {
        flex-direction: column;
        justify-content: start;
    }
    
}