/* ── Reset ──────────────────────────────────────────────────────────────────── */

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

/* ── Design tokens ──────────────────────────────────────────────────────────── */

:root {
  --color-bg:       #0f0f0f;
  --color-surface:  #1a1a1a;
  --color-border:   #2a2a2a;
  --color-text:     #e8e8e8;
  --color-muted:    #888888;
  --color-accent:   #4a9eff;

  --font:           'Inter', system-ui, sans-serif;
  --font-size-base: 16px;

  --sp-xs: 0.25rem;
  --sp-sm: 0.5rem;
  --sp-md: 1rem;
  --sp-lg: 2rem;
  --sp-xl: 4rem;

  --max-width: 760px;
  --radius: 4px;
}

/* ── Base ───────────────────────────────────────────────────────────────────── */

html {
  font-size: var(--font-size-base);
  scroll-behavior: smooth;
}

body {
  font-family: var(--font);
  background-color: var(--color-bg);
  color: var(--color-text);
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
}

a {
  color: var(--color-accent);
  text-decoration: none;
}
a:hover { text-decoration: underline; }

h1, h2, h3, h4 {
  font-weight: 500;
  line-height: 1.3;
}

p { color: var(--color-text); }

/* ── Layout ─────────────────────────────────────────────────────────────────── */

.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 var(--sp-lg);
}

section {
  padding: var(--sp-xl) 0;
}

section + section {
  border-top: 1px solid var(--color-border);
}

.section-title {
  font-size: 0.75rem;
  font-weight: 500;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--color-muted);
  margin-bottom: var(--sp-xl);
}

/* ── Lang toggle ────────────────────────────────────────────────────────────── */

.lang-toggle {
  position: fixed;
  top: 1.25rem;
  right: 1.5rem;
  display: flex;
  align-items: center;
  gap: 0.25rem;
  z-index: 100;
}

.lang-toggle__sep {
  font-size: 0.75rem;
  color: var(--color-border);
}

.lang-toggle__btn {
  font-size: 0.75rem;
  font-family: var(--font);
  font-weight: 500;
  letter-spacing: 0.05em;
  background: none;
  border: none;
  cursor: pointer;
  color: var(--color-muted);
  padding: 0.15rem 0.25rem;
  transition: color 0.15s;
}

.lang-toggle__btn.active {
  color: var(--color-text);
  cursor: default;
}

.lang-toggle__btn:not(.active):hover {
  color: var(--color-accent);
}

/* ── Hero ───────────────────────────────────────────────────────────────────── */

.hero {
  display: flex;
  align-items: flex-start;
  gap: var(--sp-xl);
  padding: var(--sp-xl) 0;
}

.hero__photo {
  width: 140px;
  height: 140px;
  border-radius: 50%;
  object-fit: cover;
  border: 2px solid var(--color-border);
  background-color: var(--color-surface);
  display: block;
  flex-shrink: 0;
}

.hero__text {
  display: flex;
  flex-direction: column;
  gap: var(--sp-sm);
}

.hero__name {
  font-size: 2.2rem;
  font-weight: 600;
  letter-spacing: -0.02em;
}

.hero__title {
  font-size: 1.05rem;
  color: var(--color-accent);
  font-weight: 400;
}

.hero__location {
  font-size: 0.875rem;
  color: var(--color-muted);
  display: flex;
  align-items: center;
  gap: var(--sp-sm);
}

.dot {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background-color: #3ecf6a;
  flex-shrink: 0;
  display: inline-block;
}

.hero__bio {
  margin-top: var(--sp-sm);
  max-width: 560px;
  font-size: 0.975rem;
  line-height: 1.8;
}

.hero__contacts {
  display: flex;
  flex-wrap: wrap;
  gap: var(--sp-md);
  margin-top: var(--sp-sm);
}

.hero__contacts a {
  font-size: 0.85rem;
  color: var(--color-muted);
  text-decoration: none;
  transition: color 0.15s;
}

.hero__contacts a:hover {
  color: var(--color-text);
}

.hero__print-contact {
  display: none;
  font-size: 0.8rem;
  color: var(--color-muted);
  margin-top: var(--sp-sm);
}

.hero__print-btn {
  margin-top: var(--sp-md);
  padding: 0.4rem 1rem;
  font-size: 0.85rem;
  font-family: var(--font);
  background: transparent;
  border: 1px solid var(--color-border);
  color: var(--color-text);
  border-radius: var(--radius);
  cursor: pointer;
  transition: border-color 0.15s, color 0.15s;
}

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

.hero__cv-btn {
  display: inline-block;
  margin-top: var(--sp-md);
  padding: 0.4rem 1rem;
  font-size: 0.85rem;
  font-family: var(--font);
  border: 1px solid var(--color-border);
  color: var(--color-text);
  border-radius: var(--radius);
  text-decoration: none;
  transition: border-color 0.15s, color 0.15s;
}

.hero__cv-btn:hover {
  border-color: var(--color-accent);
  color: var(--color-accent);
  text-decoration: none;
}

@media (max-width: 600px) {
  .hero {
    flex-direction: column;
    gap: var(--sp-lg);
  }
}

/* ── Timeline (Experience) ──────────────────────────────────────────────────── */

.timeline {
  list-style: none;
  position: relative;
  padding-left: 1.5rem;
}

.timeline::before {
  content: '';
  position: absolute;
  left: 0;
  top: 8px;
  bottom: 0;
  width: 1px;
  background-color: var(--color-border);
}

.timeline__entry {
  display: flex;
  gap: 1.25rem;
  padding-bottom: var(--sp-xl);
  position: relative;
}

.timeline__entry:last-child { padding-bottom: 0; }

.timeline__marker {
  position: absolute;
  left: -1.5rem;
  top: 6px;
  width: 1.5rem;
  display: flex;
  justify-content: center;
}

.timeline__dot {
  width: 9px;
  height: 9px;
  border-radius: 50%;
  background-color: var(--color-border);
  border: 2px solid var(--color-bg);
  flex-shrink: 0;
  margin-top: 1px;
  display: block;
}

.timeline__entry--current .timeline__dot {
  background-color: var(--color-accent);
}

.timeline__body {
  display: flex;
  flex-direction: column;
  gap: var(--sp-xs);
  flex: 1;
}

.timeline__header {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: var(--sp-md);
  flex-wrap: wrap;
}

.timeline__meta {
  display: flex;
  align-items: center;
  gap: var(--sp-xs);
  font-size: 0.8rem;
}

.timeline__company { font-weight: 500; }

.timeline__sep { color: var(--color-border); }

.timeline__location { color: var(--color-muted); }

.timeline__period {
  font-size: 0.8rem;
  color: var(--color-muted);
  white-space: nowrap;
}

.timeline__role {
  font-size: 1rem;
  font-weight: 500;
  margin-top: var(--sp-xs);
}

.timeline__description {
  font-size: 0.9rem;
  color: var(--color-muted);
  line-height: 1.75;
  margin-top: var(--sp-xs);
}

.timeline__achievements {
  margin-top: var(--sp-sm);
  padding-left: var(--sp-md);
  display: flex;
  flex-direction: column;
  gap: var(--sp-xs);
}

.timeline__achievements li {
  font-size: 0.875rem;
  color: var(--color-muted);
  line-height: 1.7;
}

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

/* ── Skills ─────────────────────────────────────────────────────────────────── */

.skills__grid {
  display: flex;
  flex-direction: column;
  gap: var(--sp-lg);
}

.skills__group {
  display: flex;
  align-items: baseline;
  gap: var(--sp-xl);
}

.skills__group-label {
  font-size: 0.8rem;
  color: var(--color-muted);
  font-weight: 400;
  width: 130px;
  flex-shrink: 0;
}

.skills__list {
  display: flex;
  flex-wrap: wrap;
  gap: var(--sp-sm);
  list-style: none;
}

.skills__tag {
  font-size: 0.85rem;
  padding: 0.2rem 0.65rem;
  border-radius: var(--radius);
  border: 1px solid var(--color-border);
  color: var(--color-text);
  background: var(--color-surface);
}

@media (max-width: 600px) {
  .skills__group {
    flex-direction: column;
    gap: var(--sp-sm);
  }
}

/* ── Education ──────────────────────────────────────────────────────────────── */

.edu-list {
  display: flex;
  flex-direction: column;
  gap: var(--sp-lg);
}

.edu-entry__header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: var(--sp-md);
  flex-wrap: wrap;
}

.edu-entry__institution {
  font-size: 0.8rem;
  color: var(--color-muted);
}

.edu-entry__degree {
  font-size: 1rem;
  font-weight: 500;
  margin-top: 0.15rem;
}

.edu-entry__location {
  font-size: 0.8rem;
  color: var(--color-muted);
  margin-top: 0.15rem;
}

.edu-entry__period {
  font-size: 0.8rem;
  color: var(--color-muted);
  white-space: nowrap;
}

.certifications {
  margin-top: var(--sp-xl);
  padding-top: var(--sp-lg);
  border-top: 1px solid var(--color-border);
}

.certifications__label {
  font-size: 0.75rem;
  font-weight: 500;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--color-muted);
  margin-bottom: var(--sp-md);
}

.cert {
  display: flex;
  gap: var(--sp-md);
  align-items: baseline;
  flex-wrap: wrap;
}

.cert__title {
  font-size: 0.9rem;
  font-weight: 500;
}

.cert__issuer {
  font-size: 0.8rem;
  color: var(--color-accent);
}

.cert__description {
  font-size: 0.85rem;
  color: var(--color-muted);
  width: 100%;
  margin-top: 0.15rem;
}

/* ── Interests ──────────────────────────────────────────────────────────────── */

.interests__grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
  gap: var(--sp-lg);
}

.interest-card {
  padding: var(--sp-md);
  border: 1px solid var(--color-border);
  border-radius: 6px;
  background: var(--color-surface);
}

.interest-card__title {
  font-size: 0.9rem;
  font-weight: 500;
  margin-bottom: var(--sp-sm);
}

.interest-card__description {
  font-size: 0.85rem;
  color: var(--color-muted);
  line-height: 1.75;
}

/* ── Footer ─────────────────────────────────────────────────────────────────── */

.footer {
  border-top: 1px solid var(--color-border);
  margin-top: var(--sp-xl);
  padding: var(--sp-lg) 0;
}

.footer__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--sp-md);
  flex-wrap: wrap;
}

.footer__links {
  display: flex;
  gap: var(--sp-lg);
}

.footer__link {
  font-size: 0.875rem;
  color: var(--color-muted);
  text-decoration: none;
  transition: color 0.15s;
}

.footer__link:hover {
  color: var(--color-text);
  text-decoration: none;
}

.footer__copy {
  font-size: 0.8rem;
  color: var(--color-muted);
}

/* ── Print ──────────────────────────────────────────────────────────────────── */

@media print {
  @page {
    size: A4;
    margin: 16mm 16mm;
  }

  :root {
    --color-bg:      #ffffff;
    --color-surface: #f5f5f5;
    --color-border:  #dddddd;
    --color-text:    #111111;
    --color-muted:   #555555;
    --color-accent:  #1a6abf;
    --sp-xl: 1.8rem;
    --sp-lg: 1.2rem;
    --sp-md: 0.75rem;
    --sp-sm: 0.4rem;
    --sp-xs: 0.2rem;
  }

  body { background: #fff; font-size: 13px; }

  .container { max-width: 100%; padding: 0; }

  .no-print { display: none !important; }

  .footer { display: none !important; }

  #section-interests { display: none !important; }

  .hero__contacts { display: none !important; }
  .hero__print-contact { display: block !important; }

  .hero__bio { display: none; }

  .hero__photo { width: 90px; height: 90px; }

  section { padding: var(--sp-lg) 0; }

  .timeline__entry:not(.timeline__entry--current) .timeline__description,
  .timeline__entry:not(.timeline__entry--current) .timeline__achievements {
    display: none;
  }

  .skills__grid { gap: var(--sp-xs); }

  .skills__group { gap: var(--sp-md); }
}