:root {
  --color-bg: #f6f7f5;
  --color-surface: #ffffff;
  --color-text: #1f2933;
  --color-muted: #5b6b79;
  --color-header: #16202a;
  --color-accent: #2f6fed;
  --color-accent-light: #e8f0ff;
  --color-border: #d9dee3;
  --font-heading: 'Poppins', 'Segoe UI', Arial, sans-serif;
  --font-body: 'Inter', 'Segoe UI', Arial, sans-serif;
  --radius: 8px;
  --max-width: 1100px;
}

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: var(--font-body);
  color: var(--color-text);
  background-color: var(--color-bg);
  line-height: 1.6;
}

h1, h2, h3 {
  font-family: var(--font-heading);
  margin: 0;
}

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

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

.placeholder {
  color: var(--color-accent);
  font-style: italic;
}

.profile-card {
  background-color: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: 1rem 1.1rem;
  margin-bottom: 1rem;
}

.profile-card h3 {
  font-size: 1.05rem;
  margin-bottom: 0.8rem;
}

.info-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 0.7rem;
}

.info-list li {
  display: flex;
  flex-direction: column;
  gap: 0.15rem;
  padding-bottom: 0.7rem;
  border-bottom: 1px solid var(--color-border);
}

.info-list li:last-child {
  border-bottom: none;
  padding-bottom: 0;
}

.info-list span {
  color: var(--color-muted);
  font-size: 0.88rem;
}

.info-list strong {
  font-weight: 600;
  word-break: break-word;
}

.tag-list {
  list-style: none;
  margin: 0.7rem 0 1.3rem;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 0.6rem;
}

.tag-list li {
  background-color: var(--color-accent-light);
  color: var(--color-header);
  border-radius: 999px;
  padding: 0.45rem 0.8rem;
  font-weight: 600;
  font-size: 0.95rem;
}

.about h3 {
  font-size: 1.25rem;
  margin: 1.5rem 0 0.2rem;
}

.about p + h3 {
  margin-top: 1.7rem;
}

.site-header {
  background-color: var(--color-header);
  color: #ffffff;
}

.header-top {
  max-width: var(--max-width);
  margin: 0 auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1.1rem 1.5rem;
}

.header-top h1 a {
  font-size: 1.4rem;
  letter-spacing: 0.02em;
}

.burger {
  display: none;
  flex-direction: column;
  justify-content: space-between;
  width: 28px;
  height: 20px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 0;
}

.burger span {
  display: block;
  height: 3px;
  width: 100%;
  background-color: #ffffff;
  border-radius: 2px;
}

.main-nav {
  border-top: 1px solid rgba(255, 255, 255, 0.12);
  background-color: #1c2731;
}

.main-nav ul {
  max-width: var(--max-width);
  margin: 0 auto;
  list-style: none;
  display: flex;
  padding: 0 1rem;
}

.main-nav a {
  display: block;
  padding: 0.9rem 1.2rem;
  color: #d7dde3;
  font-weight: 500;
}

.main-nav a:hover {
  color: #ffffff;
}

.main-nav a.active {
  color: #ffffff;
  background-color: var(--color-accent);
}

main {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 2.5rem 1.5rem 4rem;
}

.cv-page {
  display: flex;
  gap: 3rem;
  align-items: flex-start;
}

.profile {
  flex: 0 0 260px;
}

.avatar {
  width: 220px;
  height: 220px;
  border-radius: 50%;
  overflow: hidden;
  margin: 0 auto 1.8rem;
}

.avatar img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.skills {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 0.9rem;
}

.skills li {
  display: flex;
  align-items: center;
  gap: 0.8rem;
}

.skills i {
  width: 28px;
  text-align: center;
  font-size: 1.3rem;
  color: var(--color-accent);
}

.bar {
  flex: 1;
  height: 10px;
  background-color: var(--color-border);
  border-radius: 999px;
  overflow: hidden;
}

.bar span {
  display: block;
  height: 100%;
  background-color: var(--color-accent);
  border-radius: 999px;
}

.about h2 {
  font-size: 1.9rem;
  margin-bottom: 0.5rem;
}

.about .meta {
  color: var(--color-muted);
  font-weight: 500;
  margin-bottom: 1.2rem;
}

.about p {
  margin: 0 0 1.1rem;
}

.list-page h2 {
  font-size: 1.9rem;
  margin-bottom: 1.6rem;
}

.timeline {
  margin: 0;
  padding: 0;
  border-top: 1px solid var(--color-border);
}

.timeline > div {
  display: flex;
  gap: 1.5rem;
  padding: 1rem 0;
  border-bottom: 1px solid var(--color-border);
}

.timeline dt {
  flex: 0 0 130px;
  font-weight: 600;
  color: var(--color-accent);
  font-family: var(--font-heading);
}

.timeline dd {
  margin: 0;
  flex: 1;
  display: flex;
  flex-direction: column;
  gap: 0.15rem;
}

.timeline dd strong {
  font-size: 1.02rem;
}

.timeline dd span {
  color: var(--color-muted);
  font-weight: 600;
}

.timeline dd em {
  font-style: normal;
  color: var(--color-text);
}

.contact-page {
  display: flex;
  gap: 3rem;
  align-items: flex-start;
}

.contact-form {
  flex: 1 1 380px;
  background-color: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  padding: 1.8rem;
}

.contact-form fieldset {
  border: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.contact-form legend {
  font-family: var(--font-heading);
  font-size: 1.3rem;
  font-weight: 600;
  padding: 0 0 0.6rem;
}

.contact-form label {
  font-size: 0.9rem;
  font-weight: 600;
  margin-bottom: -0.6rem;
}

.contact-form input,
.contact-form textarea {
  width: 100%;
  padding: 0.7rem 0.9rem;
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  font-family: var(--font-body);
  font-size: 1rem;
}

.contact-form textarea {
  min-height: 140px;
  resize: vertical;
}

.contact-form input:focus,
.contact-form textarea:focus,
.main-nav a:focus,
.socials a:focus,
button:focus {
  outline: 3px solid var(--color-accent-light);
  outline-offset: 2px;
}

.contact-form button {
  align-self: flex-start;
  background-color: var(--color-accent);
  color: #ffffff;
  border: none;
  padding: 0.75rem 1.6rem;
  border-radius: var(--radius);
  font-weight: 600;
  cursor: pointer;
}

.contact-form button:hover {
  background-color: #1f57c9;
}

.contact-info {
  flex: 1 1 320px;
}

.contact-info h2 {
  font-size: 1.4rem;
  margin-bottom: 0.9rem;
}

.contact-details a {
  color: var(--color-accent);
}

.contact-details a:hover {
  text-decoration: underline;
}

.site-footer {
  border-top: 1px solid var(--color-border);
  background-color: var(--color-surface);
}

.site-footer .footer-inner {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 1.2rem 1.5rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 0.8rem;
}

.socials {
  display: flex;
  gap: 0.9rem;
}

.socials a {
  font-size: 1.2rem;
  color: var(--color-muted);
}

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

@media (max-width: 768px) {
  .burger {
    display: flex;
  }

  .main-nav {
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.25s ease;
  }

  .main-nav.is-open {
    max-height: 300px;
  }

  .main-nav ul {
    flex-direction: column;
    padding: 0;
  }

  .main-nav a {
    padding: 0.9rem 1.5rem;
    border-bottom: 1px solid rgba(255, 255, 255, 0.08);
  }

  .cv-page,
  .contact-page {
    flex-direction: column;
    gap: 2rem;
  }

  .profile {
    flex: none;
    width: 100%;
  }

  .profile-card {
    margin-bottom: 0.9rem;
  }

  .timeline dt {
    flex: 0 0 90px;
  }
}