:root {
  --white: #ffffff;
  --lime: #b8ff00;
  --lime-dim: #a0e600;
  --lime-pale: #efffcc;
  --black: #0a0a0a;
  --gray: #888;
  --gray-light: #f2f2f2;
  --border: #ddd;
  --mono: 'Space Mono', monospace;
  --display: 'Unbounded', sans-serif;
}

* { margin: 0; padding: 0; box-sizing: border-box; }
html { scroll-behavior: smooth; }

body {
  background: var(--white);
  color: var(--black);
  font-family: var(--mono);
  overflow-x: hidden;
  cursor: default;
}

/* Глобальная едва заметная текстура шума */
body::before {
  content: '';
  position: fixed;
  inset: 0;
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 200 200' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.75' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)' opacity='0.03'/%3E%3C/svg%3E");
  pointer-events: none;
  z-index: 9999;
  opacity: .4;
}

::-webkit-scrollbar { width: 6px; }
::-webkit-scrollbar-track { background: var(--white); }
::-webkit-scrollbar-thumb { background: var(--lime); }

/* NAV */
nav {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 100;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1.4rem 3rem;
  background: rgba(255,255,255,0.88);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
}

.nav-logo {
  font-family: var(--display);
  font-weight: 900;
  font-size: .9rem;
  letter-spacing: .05em;
  color: var(--black);
}

.nav-logo span { color: var(--lime-dim); }

.nav-links { display: flex; gap: 2.5rem; list-style: none; }

.nav-links a {
  font-family: var(--mono);
  font-size: .72rem;
  text-transform: uppercase;
  letter-spacing: .12em;
  color: var(--gray);
  text-decoration: none;
  transition: color .2s;
}
.nav-links a:hover { color: var(--black); }

/* SECTION BASE */
section { padding: 7rem 3rem; }

/* SECTION LABEL — тёмно-серый, крупнее, хорошо читается */
.section-label {
  font-family: var(--mono);
  font-size: .85rem;
  letter-spacing: .2em;
  text-transform: uppercase;
  color: #333;
  font-weight: 700;
  margin-bottom: 1.2rem;
  padding: .4rem 1rem;
  background: var(--gray-light);
  border-left: 3px solid var(--lime);
  border-radius: 3px;
  display: inline-block;
}

.section-title {
  font-family: var(--display);
  font-weight: 900;
  font-size: clamp(1.8rem, 4vw, 3.2rem);
  line-height: 1.1;
  letter-spacing: -.02em;
  color: var(--black);
  margin-bottom: 3.5rem;
}

/* ABOUT */
#about { background: var(--white); }

.about-content {
  display: flex;
  align-items: flex-start;
  gap: 40px;
  flex-wrap: wrap;
  margin-top: 20px;
}

.about-text {
  display: flex;
  flex-direction: column;
  gap: 1.2rem;
  flex: 1;
  min-width: 300px;
}

.about-text h1 {
  font-family: var(--display);
  font-weight: 900;
  font-size: clamp(1.6rem, 3vw, 2.2rem);
  line-height: 1.2;
  letter-spacing: -.02em;
  color: var(--black);
  margin-top: 0;
}

.about-text p {
  font-size: .85rem;
  line-height: 1.85;
  color: #444;
}

/* SOCIAL LINKS */
.social-links {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 28px;
}
.social-links h3 {
  width: 100%;
  font-family: var(--display);
  font-weight: 700;
  font-size: .9rem;
  color: var(--black);
  margin-bottom: 4px;
}
.social-link {
  text-decoration: none !important;
  color: #ffffff !important;
  background-color: #84cc16;
  padding: 10px 22px;
  border-radius: 24px;
  font-size: 14px;
  font-weight: 600;
  transition: all 0.3s ease;
  display: inline-flex;
  align-items: center;
  box-shadow: 0 4px 6px rgba(132, 204, 22, 0.3);
}
.social-link:hover {
  transform: translateY(-3px);
  box-shadow: 0 8px 15px rgba(132, 204, 22, 0.4);
  background-color: #65a30d;
}
.about-photo {
  flex-shrink: 0;
}
.about-photo img {
  width: 400px;
  height: 400px;
  object-fit: cover;
  border-radius: 50%;
  box-shadow: 0 10px 30px rgba(0,0,0,0.15);
  border: 4px solid #ffffff;
  transition: transform 0.3s ease;
}
.about-photo img:hover {
  transform: scale(1.02);
}

/* EXPERIENCE */
#experience { background: var(--white); }

.timeline { position: relative; max-width: 900px; }

.timeline::before {
  content: '';
  position: absolute;
  left: 0; top: 0; bottom: 0;
  width: 2px;
  background: linear-gradient(to bottom, var(--lime) 0%, var(--border) 60%);
}

.job {
  padding-left: 3rem;
  margin-bottom: 4rem;
  position: relative;
  opacity: 0;
  transform: translateY(20px);
  transition: opacity .6s, transform .6s;
}
.job.visible { opacity: 1; transform: translateY(0); }

.job::before {
  content: '';
  position: absolute;
  left: -5px; top: .35rem;
  width: 12px; height: 12px;
  border-radius: 50%;
  background: var(--lime);
  border: 2px solid var(--white);
  box-shadow: 0 0 0 3px var(--lime-dim);
}

.job-meta {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: .6rem 1.5rem;
  margin-bottom: 1rem;
}

.job-title {
  font-family: var(--display);
  font-weight: 700;
  font-size: 1.05rem;
  color: var(--black);
}

.job-company-badge {
  display: inline-flex;
  align-items: center;
  font-family: var(--display);
  font-weight: 700;
  font-size: .72rem;
  letter-spacing: .14em;
  text-transform: uppercase;
  padding: .28rem .9rem;
  border-radius: 4px;
  border: 1.5px solid var(--lime-dim);
  background: var(--lime-pale);
  color: #4a6600;
}

.job-period {
  font-size: .68rem;
  letter-spacing: .1em;
  color: var(--lime-dim);
  font-weight: 700;
  text-transform: uppercase;
  margin-left: auto;
}

.job-desc {
  font-size: .82rem;
  line-height: 1.8;
  color: #555;
  margin-bottom: 1.4rem;
  font-style: italic;
}

.job-section-title {
  font-size: .65rem;
  letter-spacing: .18em;
  text-transform: uppercase;
  color: var(--gray);
  margin-bottom: .7rem;
  margin-top: 1.2rem;
}

.job-list { list-style: none; display: flex; flex-direction: column; gap: .45rem; }

.job-list li {
  font-size: .8rem;
  line-height: 1.6;
  color: #444;
  padding-left: 1.2rem;
  position: relative;
}
.job-list li::before {
  content: '▸';
  position: absolute; left: 0;
  color: var(--lime-dim);
  font-size: .7rem; top: .05em;
}
.job-list.achievements li::before { content: '✦'; font-size: .6rem; }

.job-stack {
  margin-top: 1.5rem;
  display: flex; flex-wrap: wrap; gap: .4rem;
}

.stack-tag {
  font-size: .6rem;
  letter-spacing: .06em;
  padding: .25rem .65rem;
  background: var(--lime-pale);
  color: #4a6600;
  border-radius: 3px;
  font-weight: 700;
}

/* EDUCATION */
#education { background: var(--white); }
#education .section-title { color: var(--black); }

.edu-grid { max-width: 900px; }

.edu-card {
  display: flex;
  gap: 2.5rem;
  padding: 2rem 2.5rem;
  border: 1.5px solid var(--border);
  border-radius: 8px;
  align-items: flex-start;
  transition: border-color .2s;
}
.edu-card:hover { border-color: var(--lime-dim); }

.edu-card-left {
  display: flex; flex-direction: column;
  align-items: center; gap: .6rem;
  flex-shrink: 0; min-width: 80px;
}

.edu-degree-badge {
  font-family: var(--display);
  font-weight: 700; font-size: .62rem;
  letter-spacing: .1em; text-transform: uppercase;
  padding: .3rem .7rem;
  background: var(--lime-pale); color: #4a6600;
  border: 1.5px solid var(--lime-dim);
  border-radius: 4px; text-align: center;
}

.edu-year {
  font-family: var(--display);
  font-weight: 900; font-size: 1.6rem;
  color: var(--black); line-height: 1;
}

.edu-card-right { flex: 1; }

.edu-university {
  font-family: var(--display);
  font-weight: 700; font-size: .88rem;
  line-height: 1.4; color: var(--black);
  margin-bottom: .4rem;
}

.edu-location {
  font-size: .7rem; letter-spacing: .12em;
  text-transform: uppercase; color: var(--gray);
  margin-bottom: 1rem;
}

.edu-majors { display: flex; flex-wrap: wrap; gap: .5rem; }

.edu-major-tag {
  font-size: .65rem; letter-spacing: .04em;
  padding: .28rem .7rem;
  background: var(--gray-light); color: #555;
  border-radius: 3px; border: 1px solid var(--border);
}

.edu-placeholder {
  display: flex; align-items: center; gap: 1.5rem;
  padding: 2.5rem 2rem;
  border: 1.5px dashed var(--border);
  border-radius: 8px; color: var(--gray);
}
.edu-placeholder-icon { font-size: 2rem; }
.edu-placeholder-text { font-size: .78rem; letter-spacing: .04em; font-style: italic; }

/* SKILLS */
#skills { background: var(--black); color: var(--white); }
#skills .section-title { color: var(--white); }

.skills-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
  gap: 1.5px;
  background: #1e1e1e;
  border: 1.5px solid #1e1e1e;
}

.skill-card {
  background: #111;
  padding: 2rem 2rem 2.2rem;
  transition: background .2s;
}
.skill-card:hover { background: #161616; }

.skill-card-head {
  display: flex; align-items: center;
  gap: .9rem; margin-bottom: 1.2rem;
}

.skill-icon {
  width: 36px; height: 36px;
  background: var(--lime);
  border-radius: 6px;
  display: flex; align-items: center; justify-content: center;
  font-size: 1.1rem; flex-shrink: 0;
}

.skill-cat {
  font-family: var(--display);
  font-weight: 700; font-size: .78rem;
  letter-spacing: .05em; color: var(--white);
}

.skill-tags { display: flex; flex-wrap: wrap; gap: .5rem; }

.tag {
  font-size: .65rem;
  letter-spacing: .05em;
  padding: .3rem .75rem;
  border-radius: 3px;
  background: #222;
  color: #aaa;
  border: 1px solid #2e2e2e;
  transition: background .2s, color .2s;
}
.skill-card:hover .tag { background: #1a1a1a; }

/* SOFT SKILLS */
.skill-card-soft { grid-column: 1 / -1; }

.soft-list {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
  gap: 1.2rem;
}

.soft-item {
  padding: 1rem 1.2rem;
  background: #181818;
  border-radius: 6px;
  border: 1px solid #2a2a2a;
  transition: border-color .2s;
}
.soft-item:hover { border-color: rgba(184,255,0,.3); }

.soft-item-title {
  font-family: var(--display);
  font-weight: 700;
  font-size: .7rem;
  letter-spacing: .06em;
  color: var(--lime);
  margin-bottom: .5rem;
  text-transform: uppercase;
}

.soft-item-desc {
  font-size: .72rem;
  line-height: 1.65;
  color: #888;
}

/* DIVIDER */
.divider {
  border: none; height: 1px;
  background: var(--border);
  margin: 0 3rem;
}

/* FOOTER */
footer {
  padding: 3rem;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--black);
}

.footer-copy {
  font-size: .65rem; color: #555;
  letter-spacing: .1em; text-transform: uppercase;
}

/* REVEAL */
.reveal {
  opacity: 0; transform: translateY(28px);
  transition: opacity .65s ease, transform .65s ease;
}
.reveal.visible { opacity: 1; transform: translateY(0); }

/* RESPONSIVE */
@media (max-width: 768px) {
  nav { padding: 1.2rem 1.5rem; }
  .nav-links { display: none; }
  section { padding: 5rem 1.5rem; }
  .timeline::before { left: 6px; }
  .job { padding-left: 2.2rem; }
  .about-content { flex-direction: column; }
  .about-photo img { width: 280px; height: 280px; }
  .edu-card { flex-direction: column; gap: 1.2rem; padding: 1.5rem; }
  .edu-card-left { flex-direction: row; min-width: unset; }
  footer { padding: 3rem 1.5rem; }
}