/* Colour Palette */
:root {
    --dark-green: #344C3D;
    --light-green: #829672;
    --mist: #F3F4F1;
    --shadow: 0 10px 15px -3px rgb(0 0 0 / 0.1), 0 4px 6px -4px rgb(0 0 0 / 0.1);
}

/* Animations */
@keyframes rotate-banner {
    0% {
        transform: rotate(3deg);
    }
    50% {
        transform: rotate(-3deg);
    }
    100% {
        transform: rotate(3deg);
    }
  }
.leader-banner {
    animation: rotate-banner 1600ms;
    animation-iteration-count: infinite;
    animation-timing-function: linear;
}

/* Universal Styles */
html {
    font-size: 16px;
}
body {
    max-width: 100%;
    margin: 0 auto;
    text-align: center;
    background-color: var(--mist);
}
main, footer {
    padding: 2rem 1rem;
}
.sr-only {
    position: absolute;
    top: -9999px;
    left: -9999px;
}
.flex-container {
    display: flex;
    justify-content:space-between;
    align-items: center;
    gap: 1rem;
}
.flex {
    flex-wrap: wrap;
    display: flex;
    justify-content:space-between;
    align-items: center;
    gap: 1rem;
}

.inner-container {
    max-width:1280px;
    margin: auto;
}
span {
    font-weight: bold;
}

.center {
    text-align: center;
}

.banner img {
    max-width: min-content;
}

.blog-content {
    width: 36ch;
    margin: 0 auto;
}
.blog-content a {
    text-decoration: underline;
    display: block;
    text-align: left;
    color: #344C3D;
}

/* Typographical Styles */
.page-title {
    text-transform: uppercase;
    font-size: 3rem;
    text-shadow: 1px 1px 1px #000;
    position: absolute;
    top: 13rem;
    left: 0;
    margin: 0;
    padding: 0;
    text-align: center;
    width: 100%;
}
h2 {
    font-size: 2rem;
    line-height: 1.2;
    margin: 2rem 0 0.5rem 0;
}
h3, h4 {
    text-align: left;
}

a {
    color: var(--black);
}

p:not(footer p) {
    margin-bottom: 1rem;
}

p:not(footer p), ul, li {
    text-align: left;
}

ul li:not(nav>ul>li, :first-of-type) {
    margin-left: 1rem;
    list-style:inside ;
}
/* Utility Styles */
header {
    position: relative;
    text-align: left;
    box-shadow: 0px 6px 16px 6px rgba(0,0,0,0.16);
}

header .inner-container {
    height: 8rem;
    padding: 5rem 1rem;
}

.toggle-btn {
    background-color: unset;
    border: none;
    font-size: 0.825rem ;
}

.toggle-btn svg {
    display: block;
    width: 2rem;
}

.banner img{
    width: 100%;
}

img {
    width: 75%;
}

.img-container {
    margin: 0 auto;
}

.inspiration a {
    display: block;
    background-color: var(--light-green);
    padding: 1rem;
    border-radius: 6px;
    width: clamp(8rem, 36%, 18rem);
    margin: 2rem auto;
}
.inspiration a:hover {
    background-color: var(--dark-green);
}

.pattern-design ul {
    padding-bottom: 1rem;
}

footer {
    background-color: var(--light-green);
    font-weight: 600;
    text-align: center;
    height: 100%;
}

.links ul{
    display: flex;
    gap: 1rem;
    justify-content: center;
}
.links img {
    width: 2.5rem;
    height: 2.5rem;
    margin-top: 1rem;
}

/* Navigation */
header nav {
    background-color: white;
    box-shadow: var(--shadow);
    position: absolute;
    left: 0;
    top: 10rem;
    width: 100%;
    z-index: 10;
}

header nav ul {
    margin: 0;
    padding: 0;
}

header nav a {
    display: block;
    padding: 0.5rem 1rem;
    text-decoration: none;
    transition: 0.3s;
    color: var(--black);
}

.collapsed {
    max-height: 0;
    opacity: 0;
    visibility: hidden;
    transition: all 0.3s;
}  

.expanded {
    max-height: unset;
    opacity: 1;
    visibility: visible;
}

.leader-banner, .leader-banner-blogs {
    width: 728px;
    height: 90px;
}

@media screen and (min-width: 948px) {
    .hamburger {
        display: none;
    }

    nav.collapsed, nav.expanded {
        background-color: unset;
        box-shadow: none;
        max-height: unset;
        opacity: 1;
        visibility: visible;
        width: unset;
        position: static;
    }

    nav ul {
        display: flex;
    }

    nav a:hover,
    nav a:focus {
        background-color: unset;
        text-decoration: underline;
    }

    .page-title {
        top: 32rem;
        font-size: 10rem;
    }

    .leader-banner, .leader-banner-blogs {
        display: flex;
        align-items: center;
        max-width: 728px;
        max-height: 90px;
        margin: 0 auto;
        justify-content: space-between;
    }
    .leader-banner h2,
    .leader-banner-blogs h2 {
        font-size: 1.125rem;
        margin: 0;
    }
    .leader-banner p, 
    .leader-banner-blogs p {
        font-size: 0.75rem;
        margin: 0;
    }
    .leader-banner a,
    .leader-banner-blogs a {
        font-size: 0.875rem;
    }

    .square-banner {
        width: 250px;
        height: 250px;
    }

    main, footer {
    padding: 6rem 1rem;
    }
    
    .banner img {
        max-width: 100%;
    }

    h2 {
        font-size: 2.5rem;
    }

    p, ul, li {
        font-size: 20px;
    }

    img {
        max-width: 100%;
    }

    section {
        width: 85%;
        margin: 3rem auto;
    }

    .list {
        display: grid;
        grid-template-columns: 1fr 2fr;
        align-items: center;
        justify-content: center;
        gap: 2rem;
        width: 80%;
        margin: 0 auto;
    }
    .list img {
        grid-column: 1 / 2;
    }

    .img-container {
        display: grid;
        grid-template-columns: 2fr 2fr;
        gap: 2rem;
        align-items: center;
        justify-content: center;
    }
    .img-container img {
        margin: 0 auto;
    }
    .img-container img:first-of-type {
        height: 94%;
    }

    footer {
        display: flex;
        gap: 2rem;
        justify-content: space-between;
        align-items: end;
    }
    footer div, footer nav {
        max-width: 50%;
        text-align: left;
    }
    footer div p {
        width: 36ch;
    }

    .links ul{
        justify-content: flex-end;
    }

    .blog-content {
    width: 170ch;
    margin: 0 auto;
    }
    .blog-content .square-banner {
        display: block;
        margin: 0 auto;
    }

    .col-3 {
        display: flex;
        width: 100%;
        gap: 1rem;
        justify-content: center;
        margin-bottom: 1.5rem;
    }
    .citation p:nth-of-type(2) {
        font-style: italic;
        margin-top: 2.5rem;
    }
    .citation a {
        display: inline;
    }
}