:root {
  color-scheme: dark;
  --bg: #111417;
  --panel: #191e22;
  --panel-2: #20262b;
  --text: #eef2f3;
  --muted: #aeb8bd;
  --line: #303940;
  --accent: #63c7b2;
  --accent-2: #d3a550;
  --danger: #c66558;
  --max: 1160px;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  line-height: 1.55;
}

body.modal-open {
  overflow: hidden;
}

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

img {
  display: block;
  width: 100%;
  height: auto;
}

.topbar {
  position: sticky;
  top: 0;
  z-index: 10;
  display: flex;
  align-items: center;
  gap: 24px;
  min-height: 68px;
  padding: 12px max(20px, calc((100vw - var(--max)) / 2));
  background: rgba(17, 20, 23, 0.92);
  border-bottom: 1px solid var(--line);
  backdrop-filter: blur(14px);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  font-weight: 700;
  white-space: nowrap;
}

.brand-mark {
  display: grid;
  place-items: center;
  width: 38px;
  height: 38px;
  border: 1px solid var(--line);
  background: var(--panel-2);
  color: var(--accent);
  font-size: 14px;
}

.nav {
  display: flex;
  gap: 18px;
  margin-left: auto;
  color: var(--muted);
  font-size: 14px;
}

.nav a:hover,
.project-content a:hover,
.contact-links a:hover {
  color: var(--accent);
}

.lang-switch {
  position: relative;
  display: flex;
}

.lang-trigger,
.button,
.info-button {
  min-height: 40px;
  border: 1px solid var(--line);
  background: var(--panel);
  color: var(--text);
  padding: 9px 12px;
  font: inherit;
  cursor: pointer;
}

.lang-trigger,
.lang-button {
  display: grid;
  place-items: center;
  width: 42px;
  min-height: 40px;
  padding: 0;
  border: 1px solid var(--line);
  background: var(--panel);
  color: var(--text);
  font: inherit;
  font-size: 20px;
  line-height: 1;
  cursor: pointer;
}

.lang-trigger::after {
  content: "";
  width: 0;
  height: 0;
  margin-top: -2px;
  border-left: 4px solid transparent;
  border-right: 4px solid transparent;
  border-top: 5px solid var(--muted);
}

.lang-trigger {
  grid-template-columns: 1fr auto;
  gap: 5px;
  width: 54px;
  padding: 0 8px;
}

.lang-menu {
  position: absolute;
  top: calc(100% + 8px);
  right: 0;
  z-index: 20;
  display: none;
  gap: 6px;
  padding: 6px;
  border: 1px solid var(--line);
  background: var(--panel);
  box-shadow: 0 14px 40px rgba(0, 0, 0, 0.32);
}

.lang-switch.open .lang-menu {
  display: grid;
}

.flag {
  display: block;
  width: 24px;
  height: 16px;
  overflow: hidden;
  border: 1px solid rgba(238, 242, 243, 0.28);
  box-shadow: inset 0 0 0 1px rgba(0, 0, 0, 0.08);
}

.flag-us {
  position: relative;
  background: repeating-linear-gradient(
    to bottom,
    #b22234 0,
    #b22234 1.23px,
    #fff 1.23px,
    #fff 2.46px
  );
}

.flag-us::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 10.5px;
  height: 8.6px;
  background: #3c3b6e;
}

.flag-ru {
  background: linear-gradient(to bottom, #fff 0 33.33%, #1c57a7 33.33% 66.66%, #d52b1e 66.66% 100%);
}

.lang-button.active,
.button.primary {
  border-color: rgba(99, 199, 178, 0.55);
  background: #17322e;
  color: #eafffb;
}

main {
  width: min(var(--max), calc(100% - 40px));
  margin: 0 auto;
}

.hero {
  display: grid;
  grid-template-columns: minmax(0, 1.45fr) minmax(260px, 0.55fr);
  gap: 28px;
  min-height: calc(100vh - 68px);
  align-items: center;
  padding: 54px 0 38px;
}

.hero-copy {
  max-width: 820px;
}

.hero h1 {
  max-width: 920px;
  margin: 0;
  font-size: clamp(42px, 7vw, 82px);
  line-height: 1;
  letter-spacing: 0;
}

.hero-text {
  max-width: 720px;
  color: var(--muted);
  font-size: 20px;
}

.eyebrow,
.tagline {
  margin: 0 0 12px;
  color: var(--accent);
  font-size: 13px;
  font-weight: 700;
  letter-spacing: 0;
  text-transform: uppercase;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-top: 28px;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
}

.info-button {
  margin-top: 18px;
  width: fit-content;
}

.hero-panel,
.project-card,
.timeline-item,
.skill-group {
  border: 1px solid var(--line);
  background: var(--panel);
}

.hero-panel {
  display: grid;
  gap: 16px;
  padding: 22px;
}

.metric {
  padding-bottom: 16px;
  border-bottom: 1px solid var(--line);
}

.metric:last-child {
  padding-bottom: 0;
  border-bottom: 0;
}

.metric strong {
  display: block;
  color: var(--accent-2);
  font-size: 42px;
  line-height: 1;
}

.metric span,
.timeline-meta,
.project-content p,
.skill-group li,
.jam-card p {
  color: var(--muted);
}

.project-content a,
.contact-links a {
  color: var(--text);
  border-bottom: 1px solid rgba(99, 199, 178, 0.55);
}

.section {
  padding: 64px 0;
  border-top: 1px solid var(--line);
}

.section-heading {
  display: flex;
  align-items: end;
  justify-content: space-between;
  gap: 24px;
  margin-bottom: 22px;
}

.section-heading h2 {
  margin: 0;
  font-size: clamp(28px, 4vw, 48px);
  line-height: 1.08;
}

.featured-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 18px;
}

.project-card-large {
  grid-column: span 2;
  display: grid;
  grid-template-columns: 0.85fr 1.15fr;
}

.project-card:not(.project-card-large) {
  display: flex;
  flex-direction: column;
}

.altum-visual {
  display: grid;
  align-content: end;
  min-height: 360px;
  padding: 28px;
  background:
    linear-gradient(160deg, rgba(99, 199, 178, 0.18), transparent 48%),
    linear-gradient(0deg, rgba(0, 0, 0, 0.62), transparent),
    #22282c;
  border-right: 1px solid var(--line);
}

.altum-visual span {
  font-size: clamp(48px, 10vw, 96px);
  font-weight: 800;
  line-height: 0.9;
}

.altum-visual small {
  margin-top: 10px;
  color: var(--muted);
}

.project-card img {
  aspect-ratio: 16 / 9;
  object-fit: cover;
  border-bottom: 1px solid var(--line);
}

.project-content {
  display: flex;
  flex: 1;
  flex-direction: column;
  padding: 22px;
}

.project-content > .info-button {
  margin-top: auto;
}

.project-content h3,
.timeline-item h3,
.skill-group h3,
.jam-card h3 {
  margin: 0 0 8px;
  font-size: 22px;
}

.working-title {
  display: inline-block;
  margin: -2px 0 10px;
  color: var(--accent-2);
  font-size: 13px;
  font-weight: 700;
  text-transform: uppercase;
}

.compact-list,
.skill-group ul {
  margin: 16px 0 0;
  padding-left: 18px;
}

.compact-list li {
  margin-bottom: 8px;
}

.timeline {
  display: grid;
  gap: 12px;
}

.timeline-item {
  display: grid;
  grid-template-columns: 190px 1fr;
  gap: 22px;
  padding: 20px;
}

.timeline-meta {
  font-size: 14px;
}

.skill-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 14px;
}

.skill-group {
  padding: 18px;
}

.jam-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 14px;
}

.jam-card {
  display: flex;
  flex-direction: column;
  overflow: hidden;
  min-height: 190px;
  border: 1px solid var(--line);
  background: var(--panel-2);
}

.jam-media {
  aspect-ratio: 16 / 9;
  overflow: hidden;
  border-bottom: 1px solid var(--line);
  background: #0b0d0f;
}

.jam-media iframe,
.jam-media img {
  display: block;
  width: 100%;
  height: 100%;
  border: 0;
  object-fit: cover;
}

.jam-content {
  display: flex;
  flex: 1;
  flex-direction: column;
  padding: 18px;
}

.jam-card a {
  color: var(--accent);
}

.card-actions {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 10px;
  margin-top: auto;
  padding-top: 16px;
}

.card-actions .info-button {
  margin-top: 0;
}

.contact-section {
  display: grid;
  gap: 18px;
  padding-bottom: 90px;
}

.contact-links {
  display: flex;
  flex-wrap: wrap;
  gap: 12px 18px;
}

.modal-backdrop {
  position: fixed;
  inset: 0;
  z-index: 50;
  display: none;
  align-items: center;
  justify-content: center;
  padding: 24px;
  background: rgba(5, 7, 9, 0.76);
}

.modal-backdrop.open {
  display: flex;
}

.modal-panel {
  position: relative;
  width: min(720px, 100%);
  max-height: min(760px, calc(100vh - 48px));
  overflow: auto;
  border: 1px solid var(--line);
  background: var(--panel);
  padding: 28px;
  box-shadow: 0 24px 80px rgba(0, 0, 0, 0.45);
}

.modal-panel h2 {
  margin: 0 42px 16px 0;
  font-size: clamp(28px, 4vw, 42px);
  line-height: 1.08;
}

.modal-body {
  display: grid;
  gap: 14px;
  color: var(--muted);
}

.modal-body p {
  margin: 0;
}

.modal-close {
  position: absolute;
  top: 16px;
  right: 16px;
  display: grid;
  place-items: center;
  width: 38px;
  height: 38px;
  border: 1px solid var(--line);
  background: var(--panel-2);
  color: var(--text);
  font: inherit;
  font-size: 24px;
  line-height: 1;
  cursor: pointer;
}

.modal-action {
  margin-top: 22px;
}

@media (max-width: 900px) {
  .topbar {
    flex-wrap: wrap;
  }

  .nav {
    order: 3;
    width: 100%;
    overflow-x: auto;
    margin-left: 0;
    padding-bottom: 2px;
  }

  .hero,
  .project-card-large {
    grid-template-columns: 1fr;
  }

  .altum-visual {
    border-right: 0;
    border-bottom: 1px solid var(--line);
  }

  .featured-grid {
    grid-template-columns: 1fr;
  }

  .jam-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .skill-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .project-card-large {
    grid-column: span 1;
  }

  .timeline-item {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 560px) {
  main {
    width: min(100% - 28px, var(--max));
  }

  .hero {
    min-height: auto;
    padding-top: 36px;
  }

  .hero h1 {
    font-size: 38px;
  }

  .hero-text {
    font-size: 17px;
  }

  .section {
    padding: 44px 0;
  }

  .modal-backdrop {
    padding: 14px;
  }

  .modal-panel {
    padding: 22px;
  }

  .brand {
    width: 100%;
  }

  .skill-grid {
    grid-template-columns: 1fr;
  }

  .jam-grid {
    grid-template-columns: 1fr;
  }

  .lang-switch {
    margin-left: auto;
  }
}