:root {
  --accent:      rgba(255, 0, 0, 0.73);
  --accent-soft: rgba(255, 0, 0, 0.08);
  --bg:          #151515;
  --surface:     #1e1e1e;
  --border:      rgba(255, 255, 255, 0.12);
  --text:        #fff;
  --text-dim:    rgba(255, 255, 255, 0.7);
  --text-muted:  rgba(255, 255, 255, 0.5);
  --nav-height:  6rem;
}

* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html,
body {
  scroll-behavior: smooth;
  width: 100%;
  min-height: 100%;
  font-family: "Rubik", sans-serif;
  background: var(--bg);
  color: var(--text);
  font-size: 62.5%;
}

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

main section[id] {
  scroll-margin-top: var(--nav-height);
}

.container {
  margin-inline: auto;
  max-width: 130rem;
  padding-inline: 3.2rem;
}

#particles-js {
  position: absolute;
  inset: 0;
  filter: brightness(0.4);
}

.hero {
  position: relative;
  min-height: 100vh;
  padding: 4rem 2rem;
  display: flex;
  justify-content: center;
  align-items: center;
}

.hero__intro {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  z-index: 2;
}

.hero__text {
  color: var(--text-dim);
  font-size: 6.5rem;
  font-weight: 400;
  letter-spacing: 0.2rem;
}

.hero__name {
  color: var(--accent);
}

.hero__pitch {
  max-width: 68rem;
  margin-top: 2rem;
  color: var(--text);
  font-size: 2.6rem;
  line-height: 1.4;
}

.hero__open {
  max-width: 68rem;
  margin-top: 1.6rem;
  color: var(--text-dim);
  font-size: 1.6rem;
  line-height: 1.6;
}

.hero__open-label {
  color: var(--accent);
  font-weight: 500;
}

.hero__cta {
  display: inline-block;
  color: var(--accent);
  margin-top: 3rem;
  padding: 1.2rem 3rem;
  border: 0.4rem solid var(--accent);
  font-weight: bold;
  font-size: 2.4rem;
  text-decoration: none;
  letter-spacing: 0.1rem;
  transition: background-color 0.3s, color 0.3s;
}

.hero__cta:hover {
  background-color: var(--accent);
  color: #fff;
}

.nav {
  position: sticky;
  top: 0;
  height: var(--nav-height);
  background-color: var(--surface);
  z-index: 100;
  display: flex;
  justify-content: center;
  align-items: center;
  transition: background-color 0.3s;
}

.nav--sticky {
  background-color: rgba(30, 30, 30, 0.92);
  backdrop-filter: blur(6px);
}

.nav__toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 0.6rem;
  width: 4.4rem;
  height: 4.4rem;
  padding: 0.9rem;
  background: none;
  border: none;
  cursor: pointer;
}

.nav__toggle-bar {
  display: block;
  height: 0.25rem;
  width: 100%;
  background-color: var(--text);
  border-radius: 1px;
  transition: transform 0.3s, opacity 0.3s;
}

.nav__toggle[aria-expanded="true"] .nav__toggle-bar:nth-child(1) {
  transform: translateY(0.85rem) rotate(45deg);
}

.nav__toggle[aria-expanded="true"] .nav__toggle-bar:nth-child(2) {
  opacity: 0;
}

.nav__toggle[aria-expanded="true"] .nav__toggle-bar:nth-child(3) {
  transform: translateY(-0.85rem) rotate(-45deg);
}

.nav__list {
  display: flex;
  gap: 3rem;
  list-style: none;
}

.nav__item {
  display: flex;
  align-items: center;
  font-size: 1.5rem;
}

.nav__link {
  display: inline-block;
  text-decoration: none;
  color: var(--text);
  font-weight: bold;
  font-size: inherit;
  transition: color 0.3s;
}

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

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

.section__heading {
  text-align: center;
  font-size: 5rem;
  color: var(--text);
}

.section__heading-line {
  border-bottom: 3px solid var(--accent);
  padding-bottom: 0.2rem;
}

.about {
  position: relative;
  z-index: 21;
  margin-top: 5rem;
}

.about__body {
  display: flex;
  align-items: center;
  gap: 9rem;
  margin-top: 10rem;
}

.about__text {
  font-size: 1.8rem;
  line-height: 1.8;
  flex: 1;
  min-width: 0;
}

.about__skill-groups {
  display: flex;
  flex-direction: column;
  gap: 1.6rem;
  margin-top: 3rem;
}

.about__skill-group {
  display: grid;
  grid-template-columns: 14rem 1fr;
  align-items: baseline;
  gap: 1.6rem;
}

.about__skill-label {
  color: var(--accent);
  font-size: 1.3rem;
  font-weight: 500;
  letter-spacing: 0.1rem;
  text-transform: uppercase;
}

.about__skills {
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
}

.about__skill {
  padding: 0.5rem 1.4rem;
  border: 1px solid rgba(255, 255, 255, 0.2);
  border-radius: 2rem;
  font-size: 1.4rem;
  line-height: 1.6;
  background: rgba(255, 255, 255, 0.04);
  cursor: default;
  transition: border-color 0.3s, background 0.3s;
}

.about__skill:hover {
  border-color: var(--accent);
  background: var(--accent-soft);
}

.about__actions {
  display: flex;
  justify-content: flex-end;
  margin-top: 2.4rem;
}

.about__cv-btn {
  display: inline-block;
  border: 0.4rem solid var(--accent);
  padding: 0.8rem 2rem;
  font-size: 2rem;
  font-weight: bold;
  text-decoration: none;
  color: var(--accent);
  transition: background-color 0.3s, color 0.3s;
}

.about__cv-btn:hover {
  background-color: var(--accent);
  color: #fff;
}

.about__image {
  flex-shrink: 0;
}

.about__photo {
  width: 28rem;
  max-width: 100%;
  height: auto;
  display: block;
  object-fit: cover;
  border-radius: 4px;
}

.experience {
  position: relative;
  z-index: 22;
  margin-top: 12rem;
}

.experience__body {
  max-width: 86rem;
  margin-top: 6rem;
}

.timeline {
  position: relative;
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 4.8rem;
  padding-left: 4rem;
}

.timeline::before {
  content: "";
  position: absolute;
  top: 0.8rem;
  bottom: 0.8rem;
  left: 0.7rem;
  width: 2px;
  background-color: var(--border);
}

.timeline__item {
  position: relative;
  font-size: 1.6rem;
}

.timeline__item::before {
  content: "";
  position: absolute;
  top: 0.4rem;
  left: -4rem;
  width: 1.6rem;
  height: 1.6rem;
  border-radius: 50%;
  background-color: var(--bg);
  border: 3px solid var(--accent);
}

.timeline__kind {
  color: var(--accent);
  font-size: 1.2rem;
  font-weight: 500;
  letter-spacing: 0.1rem;
  text-transform: uppercase;
}

.timeline__role {
  margin-top: 0.6rem;
  font-size: 2.2rem;
  line-height: 1.3;
}

.timeline__org {
  margin-top: 0.4rem;
  color: var(--text-dim);
  font-size: 1.7rem;
}

.timeline__date {
  margin-top: 0.4rem;
  color: var(--text-muted);
  font-size: 1.4rem;
}

.timeline__points {
  margin-top: 1.4rem;
  padding-left: 1.8rem;
  color: var(--text-dim);
  line-height: 1.7;
}

.timeline__point + .timeline__point {
  margin-top: 0.6rem;
}

.timeline__point::marker {
  color: var(--accent);
}

.projects {
  position: relative;
  z-index: 23;
  text-align: center;
  margin-top: 12rem;
}

.projects__list {
  display: flex;
  flex-direction: column;
  gap: 8rem;
  margin-top: 5rem;
  text-align: left;
}

.projects__item {
  display: flex;
  align-items: center;
  gap: 6rem;
}

.projects__item--reverse {
  flex-direction: row-reverse;
}

.projects__media {
  flex: 2;
  min-width: 0;
  overflow: hidden;
  border-radius: 6px;
}

.projects__img {
  width: 100%;
  height: auto;
  object-fit: cover;
  display: block;
  transition: transform 0.4s ease;
}

.projects__media:hover .projects__img {
  transform: scale(1.04);
}

.projects__info {
  flex: 1;
  min-width: 0;
  font-size: 1.8rem;
}

.projects__title {
  font-weight: bold;
  font-size: 2.9rem;
  margin-bottom: 1.2rem;
}

.projects__desc {
  line-height: 1.7;
  color: var(--text-dim);
  margin-bottom: 2rem;
}

.projects__stats {
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  gap: 0.6rem 2rem;
  margin-bottom: 1.6rem;
  color: var(--text-dim);
  font-size: 1.5rem;
}

.projects__stat-value {
  color: var(--accent);
  font-weight: 700;
}

.projects__tags {
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  gap: 0.8rem;
  margin-bottom: 2.4rem;
}

.projects__tag {
  padding: 0.3rem 1rem;
  border: 1px solid rgba(255, 255, 255, 0.2);
  border-radius: 2rem;
  font-size: 1.25rem;
  background: rgba(255, 255, 255, 0.04);
}

.projects__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 1.6rem;
}

.projects__link {
  display: inline-block;
  text-decoration: none;
  color: var(--text);
  font-weight: bold;
  padding: 0.8rem 1.2rem;
  font-size: 1.8rem;
  border-bottom: 0.4rem solid var(--accent);
  transition: background-color 0.3s;
}

.projects__link:hover {
  background-color: var(--accent);
}

.projects__note {
  margin-top: 1rem;
  color: var(--text-muted);
  font-size: 1.3rem;
  line-height: 1.5;
}

.writing {
  position: relative;
  z-index: 24;
  margin-top: 12rem;
}

.writing__body {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 4rem;
  margin-top: 6rem;
}

.writing__list {
  list-style: none;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 3rem;
  width: 100%;
}

.writing__card {
  display: flex;
  flex-direction: column;
  padding: 2.8rem;
  background-color: var(--surface);
  border: 1px solid var(--border);
  border-top: 3px solid var(--accent);
  border-radius: 6px;
  transition: border-color 0.3s, transform 0.3s;
}

.writing__card:hover {
  border-color: var(--accent);
  transform: translateY(-4px);
}

.writing__date {
  color: var(--text-muted);
  font-size: 1.3rem;
  letter-spacing: 0.05rem;
}

.writing__title {
  margin-top: 1rem;
  font-size: 2rem;
  line-height: 1.35;
}

.writing__summary {
  margin-top: 1.2rem;
  margin-bottom: 2.4rem;
  color: var(--text-dim);
  font-size: 1.5rem;
  line-height: 1.6;
}

.writing__link {
  align-self: flex-start;
  margin-top: auto;
  padding: 0.6rem 1rem;
  color: var(--text);
  font-size: 1.5rem;
  font-weight: bold;
  text-decoration: none;
  border-bottom: 3px solid var(--accent);
  transition: background-color 0.3s;
}

.writing__link:hover {
  background-color: var(--accent);
}

.writing__all {
  color: var(--accent);
  font-size: 1.7rem;
  font-weight: bold;
  text-decoration: none;
  border-bottom: 2px solid transparent;
  transition: border-color 0.3s;
}

.writing__all::after {
  content: " →";
}

.writing__all:hover {
  border-color: var(--accent);
}

.contact {
  position: relative;
  z-index: 30;
  margin-top: 12rem;
  margin-bottom: 6rem;
}

.contact__body {
  display: flex;
  align-items: center;
  flex-direction: column;
  gap: 3rem;
  margin-top: 5rem;
  text-align: center;
}

.contact__message {
  font-size: 1.8rem;
}

.contact__email {
  margin-top: -1rem;
  color: var(--text);
  font-size: 2.4rem;
  font-weight: 500;
  text-decoration: none;
  border-bottom: 3px solid var(--accent);
  overflow-wrap: anywhere;
  transition: color 0.3s;
}

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

.contact__phone {
  margin-top: -1.4rem;
  color: var(--text-muted);
  font-size: 1.5rem;
}

.contact__phone-link {
  color: var(--text-dim);
  text-decoration: none;
  border-bottom: 1px solid var(--text-muted);
  transition: color 0.3s, border-color 0.3s;
}

.contact__phone-link:hover {
  color: var(--accent);
  border-color: var(--accent);
}

.contact__note {
  max-width: 50rem;
  color: var(--text-dim);
  font-size: 1.5rem;
  font-style: italic;
  line-height: 1.6;
}

.contact__note-highlight {
  color: var(--text);
  font-weight: 700;
}

.contact__form {
  display: flex;
  flex-direction: column;
  width: 50rem;
  max-width: 100%;
  gap: 1rem;
}

.contact__input,
.contact__textarea {
  background-color: #222;
  border: none;
  padding: 1rem;
  color: var(--text);
  font-size: 1.4rem;
  font-family: inherit;
}

.contact__input:focus-visible,
.contact__textarea:focus-visible {
  outline-offset: 0;
}

.contact__input {
  height: 4rem;
}

.contact__textarea {
  height: 10rem;
  resize: none;
}

.contact__submit {
  background-color: transparent;
  color: var(--text);
  padding: 0.8rem 1.2rem;
  margin-top: 0.5rem;
  min-width: 20%;
  font-weight: bold;
  font-size: 1.4rem;
  font-family: inherit;
  border: none;
  border-bottom: 3px solid var(--accent);
  cursor: pointer;
  align-self: flex-end;
  letter-spacing: 3px;
  transition: background-color 0.3s;
}

.contact__submit:hover {
  background-color: var(--accent);
}

.footer {
  z-index: 30;
  background-color: var(--surface);
  min-height: 15rem;
  color: var(--text);
  text-align: center;
  padding: 2rem;
  position: relative;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  gap: 2rem;
}

.footer__top-btn {
  position: absolute;
  top: 0;
  left: 50%;
  transform: translate(-50%, -50%);
  display: block;
  line-height: 0;
  color: var(--accent);
  transition: opacity 0.3s;
}

.footer__top-btn:hover {
  opacity: 0.7;
}

.footer__social {
  display: flex;
  gap: 2rem;
}

.footer__social-link {
  display: block;
  line-height: 0;
  color: var(--text);
  transition: color 0.3s;
}

.footer__social-link:hover {
  color: var(--accent);
}

.footer__copy {
  font-size: 1.5rem;
}

.max-width {
  max-width: 70%;
}