/*======================================
*           custom properties           *
======================================*/

:root {
    /* colors */
    --clr-dark: 230 35% 7%;
    --clr-light: 231 77% 90%;
    --clr-white: 0 0% 100%;

    /* font sizes */
    --fs-900: 9rem;
    --fs-800: 6rem;
    --fs-700: 3.5rem;
    --fs-600: 2rem;
    --fs-550: 2rem;
    --fs-500: 1.75rem;
    --fs-450: 1.75rem;
    --fs-400: 1.75rem;
    --fs-300: .875rem;
    --fs-200: 1rem;
    --fs-150: 1rem;
    --fs-100: 1.125rem;

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

@media (max-width: 768px) {
    :root {
        --fs-900: 9rem;
        --fs-800: 5rem;
        --fs-700: 2.5rem;
        --fs-600: 2rem;
        --fs-550: 1.5rem;
        --fs-500: 1.75rem;
        --fs-450: 1.25rem;
        --fs-400: 1.75rem;
        --fs-300: .875rem;
        --fs-200: 1rem;
        --fs-150: 1rem;
        --fs-100: 1rem;
    }
}

@media (max-width: 376px) {
    :root {
        --fs-900: 5rem;
        --fs-800: 3.5rem;
        --fs-700: 1.5rem;
        --fs-600: 1.125rem;
        --fs-550: 1.125rem;
        --fs-500: 1rem;
        --fs-450: 1rem;
        --fs-400: 1.75rem;
        --fs-300: .875rem;
        --fs-200: 1rem;
        --fs-150: .875rem;
        --fs-100: .938rem;
    }
}

/*======================================
*                 reset                 *
======================================*/

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

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

h1,
h2,
h3,
h4,
h5,
h6,
p {
    font-weight: 300;
}

body {
    display: grid;
    grid-template-rows: min-content 1fr;
    overflow-x: hidden;
    min-height: 100vh;
    background-color: hsl(var(--clr-dark));
    color: hsl(var(--clr-light));
    font-family: var(--ff-sans-normal);
    font-size: var(--fs-100);
    line-height: 1.5;
    transition: all .3s ease;
}

img,
picutre {
    max-width: 100%;
    display: block;
    -webkit-user-drag: none;
    -webkit-user-select: none;
    -moz-user-select: none;
    -ms-user-select: none;
    user-select: none;
}

input,
button,
textarea,
select {
    font: inherit;
}

a,
a:hover,
a:focus {
    text-decoration: none;
}

p {
    max-width: 57ch;
}

@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;
    }
}

::selection {
    background: hsl(var(--clr-light));
    color: hsl(var(--clr-dark));
}

::-webkit-scrollbar {
    width: 8px;
}

::-webkit-scrollbar-track {
    background: hsl(var(--clr-white) / .5);
    border-radius: 5px;
}

::-webkit-scrollbar-thumb {
    background: hsl(var(--clr-dark));
    border-radius: 5px;
}

::-webkit-scrollbar-thumb:hover {
    background: hsl(var(--clr-dark) / .95);
}

/*======================================
*            utility classes            *
======================================*/

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

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

.d-block {
    display: block;
}

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

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

.bg-white {
    background-color: hsl(var(--clr-white));
}

.bg-accent {
    background-color: hsl(var(--clr-light));
}

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

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

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

/* typography */
.ff-serif {
    font-family: var(--ff-serif);
}

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

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

.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-550 {
    font-size: var(--fs-550);
}

.fs-500 {
    font-size: var(--fs-500);
}

.fs-450 {
    font-size: var(--fs-450);
}

.fs-400 {
    font-size: var(--fs-400);
}

.fs-300 {
    font-size: var(--fs-300);
}

.fs-200 {
    font-size: var(--fs-200);
}

.fs-150 {
    font-size: var(--fs-150);
}

.fs-100 {
    font-size: var(--fs-100);
}

.fw-bold {
    font-weight: bold;
}

.line-height-medium {
    line-height: 1.8;
}

.letter-spacing-1 {
    letter-spacing: 4px;
}

.letter-spacing-2 {
    letter-spacing: 2px;
}

.letter-spacing-3 {
    letter-spacing: 2.7px;
}

.uppercase {
    text-transform: uppercase;
}

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

.skip-to-content {
    position: absolute;
    z-index: 9999;
    margin-inline: auto;
    padding: .5rem 1rem;
    background: hsl(var(--clr-white));
    color: hsl(var(--clr-dark));
    transform: translateY(-101%);
    transition: transform 250ms ease-in;
}

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