:root {
  --bg: #f4f7fb;
  --surface: #ffffff;
  --surface-2: #eef3f8;
  --text: #1f2937;
  --muted: #5f6b7a;
  --line: #d7dee8;
  --accent: #2563eb;
  --accent-soft: #dbeafe;
  --shadow: 0 10px 30px rgba(31, 41, 55, 0.08);
  --sidebar-width: 300px;
  --radius: 18px;
  --font-size: 14px;
}

body.dark {
  --bg: #0f172a;
  --surface: #111827;
  --surface-2: #1e293b;
  --text: #e5e7eb;
  --muted: #9ca3af;
  --line: #334155;
  --accent: #60a5fa;
  --accent-soft: rgba(96, 165, 250, 0.12);
  --shadow: 0 10px 30px rgba(0, 0, 0, 0.35);
}

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

html {
  scroll-behavior: smooth;
}

body {
  font-family: Arial, Helvetica, sans-serif;
  font-size: var(--font-size);
  line-height: 1.65;
  background: var(--bg);
  color: var(--text);
  transition: background 0.25s ease, color 0.25s ease;
}

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

a:hover {
  text-decoration: underline;
}

.page {
  min-height: 100vh;
  padding: 24px;
}

.cv-shell {
  max-width: 1240px;
  margin: 0 auto;
  display: grid;
  grid-template-columns: var(--sidebar-width) 1fr;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: 24px;
  overflow: hidden;
  box-shadow: var(--shadow);
}

.sidebar {
  background: linear-gradient(180deg, var(--surface-2), var(--surface));
  border-right: 1px solid var(--line);
  padding: 28px 22px;
  display: flex;
  flex-direction: column;
  gap: 24px;
}

.photo-card {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 18px;
  text-align: center;
}

.photo-frame {
  width: 140px;
  height: 170px;
  margin: 0 auto 14px;
  border-radius: 18px;
  border: 1px solid var(--line);
  background: linear-gradient(135deg, var(--accent-soft), transparent), var(--surface-2);
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
}

.photo-frame img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}

.name {
  font-size: 1.55rem;
  font-weight: 700;
  line-height: 1.2;
  margin-bottom: 6px;
}

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

.badge {
  display: inline-block;
  margin-top: 12px;
  padding: 6px 10px;
  border-radius: 999px;
  background: var(--accent-soft);
  color: var(--accent);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.02em;
}

.panel {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 18px;
}

.panel h3 {
  font-size: 0.95rem;
  margin-bottom: 12px;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--muted);
}

.contact-list,
.link-list,
.mini-nav {
  display: grid;
  gap: 10px;
  list-style: none;
}

.mini-nav a,
.link-list a {
  display: block;
  padding: 10px 12px;
  border: 1px solid var(--line);
  border-radius: 12px;
  background: var(--surface-2);
  color: var(--text);
  text-decoration: none;
  transition: transform 0.18s ease, border-color 0.18s ease;
}

.mini-nav a:hover,
.link-list a:hover {
  transform: translateY(-1px);
  border-color: var(--accent);
  text-decoration: none;
}

.contact-label {
  display: block;
  color: var(--muted);
  font-size: 12px;
  margin-bottom: 2px;
}

.main {
  padding: 30px;
  display: grid;
  gap: 24px;
}

.topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  flex-wrap: wrap;
}

.headline h1 {
  font-size: 2rem;
  line-height: 1.1;
  margin-bottom: 8px;
}

.actions {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
  align-items: center;
}

.btn {
  border: 1px solid var(--line);
  background: var(--surface);
  color: var(--text);
  padding: 10px 14px;
  border-radius: 12px;
  cursor: pointer;
  font: inherit;
  transition: 0.2s ease;
}

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

.btn.primary {
  background: var(--accent);
  color: white;
  border-color: var(--accent);
}

.icon-btn {
  width: 44px;
  height: 44px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 18px;
  padding: 0;
}

.grid-two {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 24px;
}

.section {
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 22px;
}

.section-title {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  margin-bottom: 18px;
  flex-wrap: wrap;
}

.section-title h2 {
  font-size: 1.2rem;
}

.section-subtitle {
  color: var(--muted);
  font-size: 13px;
}

.summary {
  display: grid;
  gap: 14px;
  color: var(--text);
}

.timeline {
  display: grid;
  gap: 16px;
}

.timeline-item {
  position: relative;
  padding-left: 18px;
  border-left: 2px solid var(--line);
}

.timeline-item::before {
  content: "";
  position: absolute;
  left: -6px;
  top: 5px;
  width: 10px;
  height: 10px;
  background: var(--accent);
  border-radius: 50%;
}

.timeline-item h4 {
  font-size: 1rem;
  margin-bottom: 4px;
}

.meta {
  color: var(--muted);
  margin-bottom: 6px;
  font-size: 13px;
}

.skills {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.skills-groups {
  display: grid;
  gap: 16px;
}

.skill-group {
  border: 1px solid var(--line);
  border-radius: 16px;
  background: var(--surface-2);
  padding: 16px;
}

.skill-group h4 {
  margin-bottom: 12px;
  font-size: 0.98rem;
}

.skill {
  padding: 8px 12px;
  border-radius: 999px;
  background: var(--surface);
  border: 1px solid var(--line);
}

.articles {
  display: grid;
  gap: 16px;
}

.article-card {
  border: 1px solid var(--line);
  border-radius: 16px;
  padding: 18px;
  background: var(--surface-2);
}

.tab-controls {
  display: flex;
  gap: 10px;
  flex-wrap: wrap;
  margin-bottom: 18px;
}

.tab-btn {
  border: 1px solid var(--line);
  background: var(--surface-2);
  color: var(--text);
  padding: 10px 14px;
  border-radius: 12px;
  cursor: pointer;
  font: inherit;
  transition: 0.2s ease;
  display: inline-flex;
  align-items: center;
  gap: 8px;
}

.tab-btn.active,
.tab-btn:hover {
  background: var(--accent);
  color: #fff;
  border-color: var(--accent);
}

.tab-content {
  display: none;
}

.tab-content.active {
  display: block;
}

.more-wrap {
  margin-top: 16px;
  display: flex;
  justify-content: center;
}

.article-card p {
  color: var(--muted);
  margin-bottom: 12px;
}

footer {
  border-top: 1px solid var(--line);
  padding-top: 18px;
  display: flex;
  justify-content: space-between;
  gap: 14px;
  flex-wrap: wrap;
  color: var(--muted);
}

.socials {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  list-style: none;
}

.socials a {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 10px 12px;
  border-radius: 12px;
  border: 1px solid var(--line);
  background: var(--surface-2);
  color: var(--text);
  text-decoration: none;
}

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

@media (max-width: 980px) {
  .cv-shell {
    grid-template-columns: 1fr;
  }

  .sidebar {
    border-right: none;
    border-bottom: 1px solid var(--line);
  }

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

@media (max-width: 640px) {
  .page {
    padding: 12px;
  }

  .sidebar,
  .main {
    padding: 18px;
  }

  .headline h1 {
    font-size: 1.6rem;
  }

  .photo-frame {
    width: 120px;
    height: 145px;
  }
}