@font-face {
    font-family: "Montserrat";
    font-style: normal;
    font-weight: 100 900;
    font-display: optional;
    src: url("fonts/montserrat_5.2.8_latin-wght-normal.woff2") format("woff2");
}

/* Base layout: all styles load together, before the first styled paint. */
*,
::before,
::after {
    box-sizing: border-box;
}

html {
    overflow: hidden;
    font-size: 100%;
    font-family: "Montserrat", Helvetica, Arial, sans-serif;
    line-height: 1.15;
    -webkit-text-size-adjust: 100%;
}

html,
body {
    height: 100%;
    width: 100%;
}

body {
    overflow-x: hidden;
    overflow-y: auto;
    margin: 0;
    padding: 3rem 2rem;
    background: #fff;
    border: 2rem solid #2c3e50;
    color: #222;
}

h1 {
    font-size: 3rem;
    text-decoration: underline;
}

h1,
h2 {
    font-weight: 700;
}

h2 {
    font-size: 1.75rem;
}

h2,
h3 {
    color: #333;
}

h3 {
    font-size: 1.1rem;
    font-weight: 400;
}

#site-container {
    margin: 0 auto;
    width: 75%;
}

.site-section {
    text-align: center;
}

.img-rounded {
    border-radius: 100%;
    border: none;
    box-shadow: 0 0 100px 0 rgba(128, 128, 128, 0.1);
}

#header-img {
    max-width: 50%;
    width: 200px;
    height: auto;
    aspect-ratio: 1;
}

header h1 {
    margin-bottom: 0;
}

/* Navigation */
.btn-list {
    list-style: none;
    margin: 1rem 0 0;
    padding: 0;
    line-height: 4rem;
    display: inline-block;
}

.btn-link-item {
    float: left;
    margin: 1rem;
}

.btn-link {
    font-size: 1rem;
    padding: 1rem;
    border: 0.25rem solid #e03423;
    background: transparent;
    color: #e03423;
    text-decoration: none;
    box-shadow: inset 0 0 0 0 #e03423;
    transition: box-shadow ease-in-out 500ms;
}

.btn-link:hover,
.btn-link:active,
.btn-link:focus {
    box-shadow: inset 0 0 0 0.25rem #e03423;
    transition-duration: 250ms;
    transition-timing-function: ease-out;
}

.btn-link:focus-visible {
    outline: 2px solid #2c3e50;
    outline-offset: 4px;
}

/* Responsive layout */
@media (max-width: 1280px) {
    #site-container {
        width: 90%;
    }
}

@media (max-width: 640px) {
    body {
        border-width: 1.5rem;
        padding: 2rem 1rem;
    }

    #site-container {
        width: 100%;
    }

    #header-img {
        max-width: 100%;
        width: 150px;
    }
}

@media (max-width: 320px) {
    html {
        font-size: 75%;
    }
}

@media (max-height: 480px) {
    body {
        padding: 1rem;
    }

    #header-img {
        max-width: 100%;
        width: 150px;
    }
}

@media (prefers-reduced-motion: reduce) {
    .btn-link {
        transition: none;
    }
}