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

:root {
    --ff-primary: 'Source Sans Pro', sans-serif;
    --ff-secondary: 'Source Code Pro', monospace;
    --fw-reg: 300;
    --fw-bold: 900;
    --clr-light: #fff;
    --clr-dark: #303030;
    --clr-accent: #16e0bd;
    --clr-blue: #0EAFE1;
    --clr-gray: #333333;
    --clr-lgray: #F2F2F2;
    --clr-orange: #d77e0ad9;
    --fs-h1: 3rem;
    --fs-h2: 2.25rem;
    --fs-h3: 1.25rem;
    --fs-body: 1rem;
    --bs: 0.25em 0.25em 0.75em rgba(0, 0, 0, .25), 0.125em 0.125em 0.25em rgba(0, 0, 0, .15);
    --fclr-dark: #000100;
    --nclr-trans: rgba(48, 48, 48, 0.9);
}

@media (min-width:800px) {
     :root {
        --fs-h1: 4.5rem;
        --fs-h2: 3.75rem;
        --fs-h3: 1.5rem;
        --fs-body: 1.125rem;
    }
}


/* General Styles */

html {
    scroll-behavior: smooth;
}

body {
    background: var(--clr-light);
    color: var(--clr-darks);
    margin: 0;
    font-family: var(--ff-primary);
    font-size: var(--fs-body);
    line-height: 1.6;
}

section {
    padding: 5em 2em;
}

img {
    display: block;
    max-width: 100%;
}

strong {
    font-weight: var(--fw-bold);
}

:focus {
    outline: 3px solid var(--clr-accent);
    outline-offset: 3px;
}


/* Typography */

h1,
h2,
h3 {
    line-height: 1;
    margin: 0;
}

h1 {
    font-size: var(--fs-h1);
}

h2 {
    font-size: var(--fs-h2);
}

h3 {
    font-size: var(--fs-h3);
}

.list__holder h1 {
    font-size: 2rem;
    margin-bottom: 0.25rem;
}

.task-list h2 {
    font-size: 1.5rem;
}


/*  header  */

header {
    display: flex;
    justify-content: space-between;
    padding: 1em;
}

.logo {
    width: 80px;
}

.nav {
    position: fixed;
    background: var(--nclr-trans);
    color: var(--clr-light);
    top: 0;
    bottom: 0;
    left: 0;
    right: 0;
    z-index: 100;
    transform: translateX(100%);
    transition: transform 250ms cubic-bezier(.5, 0, .5, 1);
}

.nav-toggle {
    padding: 0.5em;
    border: 0;
    background: transparent;
    cursor: pointer;
    height: 20px;
    align-self: center;
    position: relative;
    z-index: 1000;
    right: 2em;
}

.nav__list {
    list-style: none;
    display: flex;
    height: 100%;
    flex-direction: column;
    justify-content: space-evenly;
    align-items: center;
    margin: 0;
    padding: 0;
    backdrop-filter: blur(4px);
}

.nav__link {
    color: inherit;
    font-weight: var(--fw-bold);
    font-size: var(--fs-h2);
    text-decoration: none;
}

.nav__link:hover {
    color: var(--clr-accent);
}

.nav-open .nav {
    transform: translateX(0);
}

.nav-toggle.nav-open {
    position: fixed;
    right: 4em;
}

.nav-open .hamburger {
    transform: rotate(.625turn);
}

.nav-open .hamburger::before {
    transform: rotate(90deg) translateX(-6px);
}

.nav-open .hamburger::after {
    opacity: 0;
}

.hamburger {
    display: block;
    position: relative;
}

.hamburger,
.hamburger::before,
.hamburger::after {
    background: var(--clr-accent);
    width: 2em;
    height: 3px;
    border-radius: 1em;
    transition: transform 250ms ease-in-out;
}

.hamburger::before,
.hamburger::after {
    content: '';
    position: absolute;
    left: 0;
    right: 0;
}

.hamburger::before {
    top: 6px;
}

.hamburger::after {
    bottom: 6px;
}


/*          toDoList            */

.main__wrapper {
    width: 100%;
    background: var(--clr-lgray);
    display: flex;
    flex-direction: column;
}

.list__holder {
    flex: 1 1 0%;
    padding: 2rem 1rem;
    max-width: 800px;
    width: 100%;
    margin: 0 auto;
}

.list__form {
    display: flex;
}

.list__input,
.list__input--submit {
    appearance: none;
    border: none;
    outline: none;
    background: none;
}

.list__input {
    flex: 1 1 0%;
    padding: 12px;
    border-radius: 12px;
    background-color: var(--clr-dark);
    margin-right: .5em;
    color: var(--clr-orange);
    font-size: 1.125rem;
}

.list__input::placeholder {
    color: var(--clr-orange);
}

.list__input--submit {
    color: var(--clr-gray);
    font-weight: var(--fw-bold);
    font-size: 1.125rem;
    cursor: pointer;
    transition: transform .075s ease-in;
}

.list__input--submit:hover {
    transform: scale(1.075);
}

.list__input--submit:active {
    transform: scale(1.175);
}

.main {
    flex: 1 1 0%;
    padding: 2rem 1rem;
    max-width: 800px;
    width: 100%;
    margin: 0 auto;
}

.content {
    flex: 1 1 0%;
}

.main input,
.main button {
    appearance: none;
    border: none;
    outline: none;
    background: none;
}

.task-list {
    padding: 0;
    margin: 0 auto;
}

.task {
    display: flex;
    justify-content: space-between;
    background-color: var(--clr-dark);
    padding: 12px;
    border-radius: 12px;
    margin-bottom: .5rem;
}

.text {
    color: var(--clr-orange);
    font-size: 1.125rem;
    width: 100%;
    display: block;
    transition: 0.25s;
}

.text:not(:read-only) {
    color: var(--clr-accent);
    font-size: 1.125rem;
    width: 100%;
    display: block;
    transition: 0.25s;
}

.btnActions {
    display: flex;
    margin: 0 -8px;
}

.task button {
    cursor: pointer;
    margin: 0 8px;
    font-size: 1.125rem;
    font-weight: var(--fw-bold);
    transition: 0.25s;
}

.task button:hover {
    transform: scale(1.075);
}

.task button:active {
    transform: scale(1.175);
}

.edit,
.delete {
    color: var(--clr-accent);
}


/*              Footer              */

.footer {
    background: var(--fclr-dark);
    color: var(--clr-accent);
    text-align: center;
    pad: 2.5em 0em;
    font-size: var(--fs-h3);
}

.footer a {
    color: inherit;
    text-decoration: none;
}

.footer__link {
    font-weight: var(--fw-bold);
    position: relative;
    top: 1em;
}

.footer__link:hover,
.social-list__link:hover {
    opacity: .7;
}

.footer__link:hover {
    text-decoration: underline;
}

.social-list {
    list-style: none;
    display: flex;
    justify-content: center;
    margin: 2em 0 0;
    padding: 0;
}

.social-list__item {
    margin-top: .5em;
    margin-bottom: 1em;
}

.social-list__link {
    padding: .25em;
    margin-left: 1em;
    margin-bottom: 3em;
}