:root {
  --bg: #0b1020;
  --bg-soft: #121a31;
  --panel: rgba(18, 26, 49, 0.72);
  --panel-strong: #121a31;
  --panel-alt: #0f162b;
  --text: #edf2ff;
  --text-soft: #aab6d3;
  --line: rgba(255, 255, 255, 0.08);
  --line-strong: rgba(255, 255, 255, 0.14);
  --primary: #4f7cff;
  --primary-strong: #3a68f4;
  --accent: #7dd3fc;
  --success: #22c55e;
  --shadow-lg: 0 24px 60px rgba(0, 0, 0, 0.35);
  --shadow-md: 0 14px 34px rgba(0, 0, 0, 0.22);
  --radius-lg: 24px;
  --radius-md: 18px;
  --radius-sm: 12px;
  --container: 1180px;
  --header-height: 78px;
  --font: "Inter", sans-serif;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: var(--font);
  color: var(--text);
  background:
    radial-gradient(
      circle at top left,
      rgba(79, 124, 255, 0.14),
      transparent 28%
    ),
    radial-gradient(
      circle at top right,
      rgba(125, 211, 252, 0.09),
      transparent 24%
    ),
    linear-gradient(180deg, #08101f 0%, #0b1020 50%, #09101d 100%);
  line-height: 1.65;
}

body.menu-open {
  overflow: hidden;
}

img {
  max-width: 100%;
  display: block;
}

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

button,
input,
textarea,
select {
  font: inherit;
}

:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 3px;
}

.skip-link {
  position: absolute;
  left: -9999px;
  top: 12px;
  z-index: 999;
  padding: 10px 14px;
  background: #ffffff;
  color: #000000;
  border-radius: 10px;
}

.skip-link:focus {
  left: 12px;
}

.container {
  width: min(var(--container), calc(100% - 32px));
  margin: 0 auto;
}

.header {
  position: sticky;
  top: 0;
  z-index: 200;
  min-height: var(--header-height);
  backdrop-filter: blur(16px);
  background: rgba(8, 16, 31, 0.72);
  border-bottom: 1px solid var(--line);
}

.header__inner {
  min-height: var(--header-height);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}

.brand {
  display: inline-flex;
  flex-direction: column;
  gap: 2px;
}

.brand__title {
  font-size: 1rem;
  font-weight: 800;
  letter-spacing: -0.02em;
}

.brand__subtitle {
  font-size: 0.78rem;
  color: var(--text-soft);
}

.nav {
  display: flex;
  align-items: center;
  gap: 8px;
}

.nav__link {
  position: relative;
  padding: 10px 14px;
  font-size: 0.94rem;
  color: var(--text-soft);
  border-radius: 999px;
  transition: 180ms ease;
}

.nav__link:hover,
.nav__link.is-active {
  color: var(--text);
  background: rgba(255, 255, 255, 0.06);
}

.menu-toggle {
  display: none;
  width: 46px;
  height: 46px;
  border: 1px solid var(--line);
  border-radius: 14px;
  background: rgba(255, 255, 255, 0.03);
  padding: 0;
  cursor: pointer;
}

.menu-toggle span {
  width: 18px;
  height: 2px;
  background: #ffffff;
  display: block;
  margin: 4px auto;
  border-radius: 999px;
}

.hero {
  padding: 72px 0 56px;
}

.hero__grid {
  display: grid;
  grid-template-columns: 1.15fr 0.85fr;
  gap: 28px;
  align-items: stretch;
}

.hero__content,
.hero__panel {
  min-width: 0;
}

.eyebrow,
.section-head__eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  margin: 0 0 14px;
  font-size: 0.8rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--accent);
}

.hero__title {
  margin: 0;
  max-width: 12ch;
  font-size: clamp(2.3rem, 5vw, 4.5rem);
  line-height: 1.04;
  letter-spacing: -0.04em;
}

.hero__text {
  margin: 22px 0 0;
  max-width: 64ch;
  color: var(--text-soft);
  font-size: 1.03rem;
}

.hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 28px;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  min-height: 48px;
  padding: 0 18px;
  border-radius: 14px;
  font-weight: 700;
  border: 1px solid transparent;
  transition: 180ms ease;
}

.btn--primary {
  background: linear-gradient(135deg, var(--primary), var(--primary-strong));
  color: #ffffff;
  box-shadow: var(--shadow-md);
}

.btn--primary:hover {
  transform: translateY(-1px);
  filter: brightness(1.04);
}

.btn--secondary {
  background: rgba(255, 255, 255, 0.03);
  border-color: var(--line-strong);
  color: var(--text);
}

.btn--secondary:hover {
  background: rgba(255, 255, 255, 0.06);
}

.btn--ghost {
  background: transparent;
  border-color: transparent;
  color: var(--text-soft);
}

.btn--ghost:hover {
  color: var(--accent);
  background: rgba(125, 211, 252, 0.08);
}

.btn--ghost svg {
  flex-shrink: 0;
}

.hero__highlights {
  margin: 26px 0 0;
  padding: 0;
  list-style: none;
  display: grid;
  gap: 12px;
}

.hero__highlights li {
  position: relative;
  padding-left: 20px;
  color: var(--text-soft);
}

.hero__highlights li::before {
  content: "";
  position: absolute;
  left: 0;
  top: 10px;
  width: 8px;
  height: 8px;
  border-radius: 999px;
  background: linear-gradient(135deg, var(--accent), var(--primary));
  box-shadow: 0 0 0 5px rgba(79, 124, 255, 0.1);
}

.hero__panel {
  display: grid;
  gap: 18px;
}

.profile-card,
.stats-card,
.card {
  background: var(--panel);
  border: 1px solid var(--line);
  box-shadow: var(--shadow-lg);
  border-radius: var(--radius-lg);
  backdrop-filter: blur(14px);
}

.profile-card {
  overflow: hidden;
}

.profile-card__image {
  position: relative;
  aspect-ratio: 4 / 4.5;
  overflow: hidden;
  background: linear-gradient(
    180deg,
    rgba(79, 124, 255, 0.22),
    rgba(8, 16, 31, 0)
  );
}

.profile-card__image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center top;
}

.profile-card__body {
  padding: 22px;
}

.profile-card__label {
  margin: 0 0 8px;
  color: var(--accent);
  font-size: 0.8rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
}

.profile-card__name {
  margin: 0;
  font-size: 1.45rem;
  line-height: 1.15;
}

.profile-card__role {
  margin: 12px 0 0;
  color: var(--text-soft);
}

.profile-card__tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 18px;
}

.profile-card__tags span,
.chip {
  display: inline-flex;
  align-items: center;
  min-height: 34px;
  padding: 0 12px;
  border-radius: 999px;
  border: 1px solid var(--line-strong);
  background: rgba(255, 255, 255, 0.03);
  color: #dfe8ff;
  font-size: 0.92rem;
}

.profile-card__links {
  display: flex;
  gap: 10px;
  margin-top: 20px;
}

.profile-card__links a {
  width: 44px;
  height: 44px;
  border-radius: 14px;
  display: grid;
  place-items: center;
  border: 1px solid var(--line-strong);
  background: rgba(255, 255, 255, 0.03);
  transition: 180ms ease;
}

.profile-card__links a:hover {
  background: rgba(255, 255, 255, 0.07);
  transform: translateY(-1px);
}

.profile-card__links img {
  width: 19px;
  height: 19px;
  object-fit: contain;
}

.icon--github {
  filter: brightness(0) invert(1);
}

.stats-card {
  padding: 18px;
  display: grid;
  gap: 14px;
}

.stats-card__item {
  padding: 14px 16px;
  border-radius: 16px;
  background: rgba(255, 255, 255, 0.025);
  border: 1px solid rgba(255, 255, 255, 0.05);
}

.stats-card__label {
  display: block;
  margin-bottom: 5px;
  font-size: 0.8rem;
  color: var(--text-soft);
  text-transform: uppercase;
  letter-spacing: 0.06em;
}

.section {
  padding: 44px 0 84px;
  scroll-margin-top: 104px;
}

.section--alt {
  background: linear-gradient(
    180deg,
    rgba(255, 255, 255, 0.018),
    rgba(255, 255, 255, 0.01)
  );
  border-top: 1px solid rgba(255, 255, 255, 0.04);
  border-bottom: 1px solid rgba(255, 255, 255, 0.04);
}

.section-head {
  max-width: 760px;
  margin-bottom: 28px;
}

.section-head__title {
  margin: 0;
  font-size: clamp(1.8rem, 3vw, 2.8rem);
  line-height: 1.1;
  letter-spacing: -0.03em;
}

.section-head__text {
  margin: 12px 0 0;
  color: var(--text-soft);
  font-size: 1rem;
}

.about-grid,
.contact-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 22px;
}

.expertise-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 22px;
}

.projects-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 22px;
}

.projects-more {
  display: flex;
  justify-content: center;
  margin-top: 32px;
}

.projects-more .btn--secondary {
  display: inline-flex;
  align-items: center;
  gap: 10px;
}

.card {
  padding: 24px;
}

.card__title {
  margin: 0 0 14px;
  font-size: 1.12rem;
  line-height: 1.2;
}

.card__text,
.card p {
  color: var(--text-soft);
}

.feature-list,
.timeline__list,
.project__list,
.links-list {
  margin: 0;
  padding-left: 18px;
}

.feature-list li,
.timeline__list li,
.project__list li,
.links-list li {
  margin-bottom: 8px;
  color: var(--text-soft);
}

.chips {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  margin-bottom: 22px;
}

.timeline {
  display: grid;
  gap: 18px;
}

.timeline__top {
  display: flex;
  justify-content: space-between;
  gap: 20px;
  align-items: flex-start;
  margin-bottom: 16px;
}

.timeline__top:last-child {
  margin-bottom: 0;
}

.timeline__period {
  margin: 0 0 6px;
  font-size: 0.82rem;
  color: var(--accent);
  text-transform: uppercase;
  letter-spacing: 0.06em;
  font-weight: 700;
}

.timeline__title {
  margin: 0;
  font-size: 1.16rem;
}

.timeline__company {
  margin: 8px 0 0;
  color: var(--text-soft);
}

.timeline__badge,
.project__tag {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 32px;
  padding: 0 12px;
  border-radius: 999px;
  background: rgba(79, 124, 255, 0.14);
  color: #d8e5ff;
  border: 1px solid rgba(79, 124, 255, 0.28);
  font-size: 0.82rem;
  font-weight: 700;
  white-space: nowrap;
}

.project__header {
  display: flex;
  flex-direction: column;
  gap: 14px;
  margin-bottom: 14px;
}

.project__title {
  margin: 0;
  font-size: 1.16rem;
  line-height: 1.22;
}

.project__text {
  margin: 0 0 18px;
  color: var(--text-soft);
  flex: 1;
}

.project__link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: 0.88rem;
  font-weight: 700;
  color: var(--accent);
  text-decoration: none;
  margin-top: auto;
  transition: opacity 150ms ease, gap 150ms ease;
}

.project__link:hover {
  opacity: 0.75;
  gap: 9px;
}

.project.card {
  display: flex;
  flex-direction: column;
}

.portfolio-note {
  margin-top: 22px;
}

.contact-list {
  display: grid;
  gap: 16px;
}

.contact-item {
  display: grid;
  gap: 8px;
}

.contact-item__label {
  font-size: 0.82rem;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  color: var(--accent);
  font-weight: 700;
}

.contact-link,
.contact-text {
  color: var(--text);
}

.copy-button {
  width: 100%;
  min-height: 54px;
  padding: 0 16px;
  border-radius: 16px;
  border: 1px solid var(--line-strong);
  background: rgba(255, 255, 255, 0.03);
  color: var(--text);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  cursor: pointer;
  transition: 180ms ease;
}

.copy-button:hover {
  background: rgba(255, 255, 255, 0.06);
}

.copy-button.is-copied {
  border-color: rgba(34, 197, 94, 0.4);
  background: rgba(34, 197, 94, 0.12);
}

.copy-button__value {
  overflow-wrap: anywhere;
  text-align: left;
}

.copy-button__status {
  color: var(--text-soft);
  white-space: nowrap;
  font-size: 0.92rem;
}

.links-list a {
  color: #dce7ff;
}

.links-list a:hover,
.contact-link:hover {
  color: var(--accent);
}

.footer {
  padding: 26px 0 42px;
  border-top: 1px solid var(--line);
}

.footer__inner {
  display: flex;
  justify-content: space-between;
  gap: 18px;
  color: var(--text-soft);
  font-size: 0.92rem;
}

[data-reveal] {
  opacity: 0;
  transform: translateY(18px);
  transition:
    opacity 650ms ease,
    transform 650ms ease;
}

[data-reveal].is-visible {
  opacity: 1;
  transform: translateY(0);
}

@media (max-width: 1080px) {
  .hero__grid,
  .about-grid,
  .contact-grid,
  .projects-grid {
    grid-template-columns: 1fr;
  }

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

  .hero__title {
    max-width: 14ch;
  }
}

@media (max-width: 860px) {
  .menu-toggle {
    display: inline-block;
  }

  .nav {
    position: absolute;
    top: calc(var(--header-height) - 4px);
    right: 16px;
    left: 16px;
    padding: 14px;
    border-radius: 20px;
    border: 1px solid var(--line);
    background: rgba(10, 16, 30, 0.96);
    box-shadow: var(--shadow-lg);
    display: none;
    flex-direction: column;
    align-items: stretch;
  }

  .nav.is-open {
    display: flex;
  }

  .nav__link {
    padding: 12px 14px;
    border-radius: 14px;
  }
}

@media (max-width: 640px) {
  .hero {
    padding-top: 54px;
  }

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

  .hero__title {
    max-width: none;
    font-size: clamp(2rem, 10vw, 3rem);
  }

  .card,
  .profile-card__body,
  .stats-card {
    padding: 18px;
  }

  .timeline__top,
  .footer__inner {
    flex-direction: column;
    align-items: flex-start;
  }

  .btn {
    width: 100%;
  }

  .btn--ghost {
    border-color: var(--line-strong);
  }

  .hero__actions {
    flex-direction: column;
  }
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

  [data-reveal] {
    opacity: 1;
    transform: none;
    transition: none;
  }

  * {
    transition: none !important;
    animation: none !important;
  }
}