:root {
  --clr-bg: #f4f4f4;
  --clr-fg: #2a2a2a;
  --clr-bg-inverted: var(--clr-fg);
  --clr-fg-inverted: var(--clr-bg);
  --clr-accent-primary: #f4610b;
  --clr-accent-secondary: #e7e7e7;

  --ff-primary: system-ui, sans-serif;
  --fw-extrabold: 800;
  --fw-bold: 700;
  --fw-semibold: 600;
  --fw-medium: 500;
  --fw-normal: 400;
  --fw-light: 300;
  --fw-thin: 200;
  --fw-extrathin: 100;

  --fs-huge: min(16.25vh, 4.875rem); /* 78px */
  --fs-xlarge: min(6.67vh, 2rem); /* 32px */
  --fs-large: 1.75rem; /* 28px */
  --fs-semilarge: min(5vh, 1.5rem); /* 24px */
  --fs-xmedium-cover: min(4.17vh, 1.25rem); /* 20px */
  --fs-xmedium: 1.25rem; /* 20px */
  --fs-medium: 1.125rem; /* 18px */
  --fs-normal: 1rem; /* 16px */
  --fs-small: 0.8rem; /* 12.8px */
}

* {
  box-sizing: border-box;
  /* border: 1px solid #f50404; */
}

html {
  font-family: var(--ff-primary);
  font-size: 16px;
  height: 100%;
  margin: 0;
  scroll-behavior: none;
  overscroll-behavior: none;
}

/* BREAKPOINTS FOR FONT SIZES */

@media only screen and (max-width: 576px) {
  :root {
    --fs-huge: min(13.56vh, 3.05rem);
    --fs-xlarge: min(6.67vh, 1.5rem);
    --fs-xmedium-cover: min(4.44vh, 1rem);
  }
}
@media only screen and (min-width: 577px) and (max-width: 1280px) {
  html {
    font-size: 18px;
  }
}
@media only screen and (min-width: 1281px) and (max-width: 1920px) {
  html {
    font-size: 21px;
  }
}
@media only screen and (min-width: 1921px) {
  html {
    font-size: 22px;
  }
}

body {
  background-color: var(--clr-bg);
  color: var(--clr-fg);
  font-size: var(--fs-normal);
  margin: 0;
  height: 100%;
}

a {
  text-decoration: none;
  color: inherit;
  font-weight: bold;
  font-size: inherit;
}

/* GENERAL */

.fw-medium {
  font-weight: var(--fw-medium);
}

.no-margin {
  margin: 0;
}

.no-margin-top {
  margin-top: 0;
}

/* COVER */

.cover {
  background-color: var(--clr-bg-inverted);
  color: var(--clr-fg-inverted);
  height: 100%;
  background-size: cover;
  text-align: center;
}

canvas {
  width: 100%;
  height: 100%;
  display: none;
}

.cover-main {
  position: absolute;
  width: 95%;
  top: 40%;
  left: 50%;
  transform: translate(-50%, -50%);
}

.cover-title {
  color: var(--clr-accent-primary);
  font-weight: var(--fw-bold);
  font-size: var(--fs-huge);
}

.cover-headline {
  font-weight: var(--fw-medium);
  font-size: var(--fs-xlarge);
  margin-top: 0.6em;
}

.cover-bottom-link {
  font-weight: var(--fw-medium);
  font-size: var(--fs-xmedium-cover);
  position: absolute;
  max-width: 95%;
  display: block;
  top: 90%;
  left: 50%;
  transform: translate(-50%, -50%);
}

.cover-bottom-link > * {
  margin: 0;
}

.fa-angles-down {
  margin-top: 0.5em;
  color: var(--clr-fg-inverted);
}

/* CONTAINER */

.container {
  margin: 0 auto;
  padding-top: 0.9em;
  width: 80%;
  max-width: 70ch;
}

.container a {
  color: var(--clr-accent-primary);
}

/* BANNER */

.banner {
  background-color: var(--clr-bg-inverted);
  color: var(--clr-fg-inverted);
  text-align: center;
  padding: 0.9em 1em;
  font-style: italic;
}

/* FOOTER*/

.footer {
  font-size: var(--fs-small);
  margin-top: 1.5em;
  padding-bottom: 3em;
  border-top: 0.25em solid var(--clr-fg);
}

.footer > * {
  margin: 1em 0 0 0;
}

/* MAIN */

.main p {
  line-height: 1.6;
}

.main .section:first-child {
  margin-top: 3em;
}

.main .section:last-of-type {
  margin-bottom: 5em;
}

.section {
  margin-top: 5em;
}

.section-highlight {
  background-color: var(--clr-accent-secondary);
  position: relative;
  padding-bottom: 1.25em;
  padding-top: 1.25em;
  box-sizing: content-box;
  padding-left: min(2em, 6.25%);
  padding-right: min(2em, 6.25%);
  right: min(2em, 6.25%);
  width: 100%;
}

h1 {
  font-weight: var(--fw-semibold);
  position: relative;
  padding-bottom: 0.5em;
  margin-top: 0;
}

h1:after {
  background-color: var(--clr-fg);
  content: "";
  position: absolute;
  left: 0;
  bottom: 0;
  height: 0.1em;
  width: 1.5em;
}

.grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  margin-top: 2.5em;
}

.column {
  border-left: 0.125em solid var(--clr-fg);
  padding: 1em 1em;
}

.grid p {
  margin: 0;
  font-size: var(--fs-xmedium);
}

.img-container {
  text-align: center;
  float: right;
  max-width: 50%;
  margin: 0;
  padding: 0 0 0 1em;
}

.img-profile {
  width: 100%;
  max-width: 400px;
  border-radius: 4px;
}

.img-copyright {
  font-size: var(--fs-small);
  margin: 0;
  text-align: center;
}

.clearfix::after {
  content: "";
  clear: both;
  display: table;
}

.mail-address-container {
  display: flex;
  align-items: center;
}

.mail-address-container > * {
  margin: 0;
}

.mail-address-container i {
  margin-right: 1em;
}

/* BUTTON */

.btn-container {
  display: flex;
  align-items: center;
  padding-top: 0.75em;
}

.btn {
  background-color: var(--clr-bg-inverted);
  color: var(--clr-fg-inverted);
  font-weight: var(--fw-semibold);
  font-size: var(--fs-normal);
  border: none;
  padding: 0.5em 1em;
  cursor: pointer;
  border-radius: 4px;
  background: linear-gradient(
    to right,
    var(--clr-accent-primary) 50%,
    var(--clr-bg-inverted) 50%
  );
  background-size: 200% 100%;
  background-position: right bottom;
  transition: all 0.3s ease-out;
}

.btn-note {
  font-size: var(--fs-small);
  padding-left: 1em;
}

/* HEADER LINKS */

.header-link .hide-link {
  visibility: hidden;
  font-size: var(--fs-xmedium);
  position: absolute;
  top: 0%;
  margin-left: 0.25em;
}

/* QUERY PREFERENCE FOR REDUCED MOTION */

@media (prefers-reduced-motion: no-preference) {
  html {
    scroll-behavior: smooth;
  }
  #random-walk-canvas {
    display: block;
  }
}

/* QUERY ONLY DEVICES THAT SUPPORT HOVER */

@media (hover: hover) {
  .cover-bottom-link > * {
    transition: color ease-out 0.2s;
  }
  .container a {
    transition: color ease-out 0.2s;
  }
  .cover-bottom-link:hover > * {
    color: var(--clr-accent-primary);
    transition: ease-in 0.2s;
  }
  .container a:hover {
    color: var(--clr-fg);
    transition: ease-in 0.2s;
  }
  .btn:hover {
    background-position: left bottom;
  }

  .header-link:hover .hide-link {
    visibility: visible;
  }

  .js-a {
    cursor: pointer;
  }
}

/* BREAKPOINT FOR LAYOUT */

@media only screen and (max-width: 576px) {
  .container,
  .cover-main {
    width: 100%;
    padding-left: 20px;
    padding-right: 20px;
  }
  .section-highlight {
    padding-left: 10px;
    padding-right: 10px;
    right: 10px;
  }
  .img-container {
    display: block;
    padding: 0;
    max-width: 70%;
  }
  #flex {
    display: flex;
    flex-direction: column;
    align-items: center;
  }
  #a {
    order: 1;
  }
  #b {
    order: 2;
  }
  #c {
    order: 3;
  }
  .grid {
    grid-template-columns: 1fr;
  }
}