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

:root {
  --bg: #09090b;
  --surface: #18181b;
  --surface-2: #1f1f23;
  --border: #27272a;
  --accent: #6366f1;
  --accent-muted: rgba(99, 102, 241, 0.15);
  --text: #fafafa;
  --text-muted: #71717a;
  --text-secondary: #a1a1aa;
  --radius: 8px;
  --nav-h: 64px;
}

html {
  scroll-behavior: smooth;
  scroll-padding-top: var(--nav-h);
}

body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
  font-size: 15px;
  -webkit-font-smoothing: antialiased;
}

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

/* ── NAV ── */
nav {
  position: sticky;
  top: 0;
  z-index: 100;
  height: var(--nav-h);
  background: rgba(9, 9, 11, 0.85);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
  display: flex;
  align-items: center;
}

.nav-inner {
  max-width: 900px;
  width: 100%;
  margin: 0 auto;
  padding: 0 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.nav-logo {
  font-weight: 600;
  font-size: 15px;
  letter-spacing: -0.01em;
  color: var(--text);
  transition: color 150ms ease;
}

.nav-logo:hover { color: var(--accent); }

.nav-links {
  display: flex;
  align-items: center;
  gap: 28px;
  list-style: none;
}

.nav-links a {
  font-size: 13.5px;
  color: var(--text-muted);
  transition: color 150ms ease;
  font-weight: 400;
}

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

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

/* ── SHARE ── */
.share-wrap {
  position: relative;
}

.share-btn {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 6px 12px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  color: var(--text-muted);
  font-size: 13px;
  font-family: inherit;
  font-weight: 500;
  cursor: pointer;
  transition: all 150ms ease;
}

.share-btn:hover {
  background: var(--surface-2);
  color: var(--text);
  border-color: #3f3f46;
}

.share-dropdown {
  display: none;
  position: absolute;
  top: calc(100% + 8px);
  right: 0;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 6px;
  min-width: 160px;
  box-shadow: 0 8px 24px rgba(0,0,0,0.4);
  z-index: 200;
}

.share-dropdown.open {
  display: flex;
  flex-direction: column;
}

.share-item {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 9px 12px;
  border-radius: 6px;
  font-size: 13.5px;
  color: var(--text-secondary);
  cursor: pointer;
  transition: background 120ms ease, color 120ms ease;
  text-decoration: none;
  background: none;
  border: none;
  font-family: inherit;
  width: 100%;
  text-align: left;
}

.share-item:hover {
  background: var(--surface-2);
  color: var(--text);
}

.hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  cursor: pointer;
  padding: 4px;
  background: none;
  border: none;
}

.hamburger span {
  display: block;
  width: 22px;
  height: 1.5px;
  background: var(--text-muted);
  transition: all 200ms ease;
}

/* ── LAYOUT ── */
.container {
  max-width: 900px;
  margin: 0 auto;
  padding: 0 24px;
}

section {
  padding: 80px 0;
}

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

.section-label {
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 32px;
}

/* ── HERO ── */
#hero {
  padding: 100px 0 80px;
  position: relative;
  overflow: hidden;
}

#hero::before {
  content: '';
  position: absolute;
  top: -200px;
  left: -100px;
  width: 600px;
  height: 600px;
  background: radial-gradient(circle, rgba(99, 102, 241, 0.08) 0%, transparent 70%);
  pointer-events: none;
}

.hero-title {
  font-size: clamp(36px, 6vw, 56px);
  font-weight: 700;
  letter-spacing: -0.03em;
  line-height: 1.1;
  margin-bottom: 12px;
}

.hero-title span {
  color: var(--accent);
}

.hero-role {
  font-size: 18px;
  color: var(--text-secondary);
  font-weight: 400;
  margin-bottom: 8px;
}

.hero-location {
  font-size: 13.5px;
  color: var(--text-muted);
  margin-bottom: 24px;
  display: flex;
  align-items: center;
  gap: 6px;
}

.hero-location svg {
  width: 14px;
  height: 14px;
  flex-shrink: 0;
}

.hero-summary {
  max-width: 520px;
  color: var(--text-secondary);
  font-size: 15px;
  line-height: 1.7;
  margin-bottom: 36px;
}

.hero-actions {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
}

.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 10px 20px;
  border-radius: var(--radius);
  font-size: 13.5px;
  font-weight: 500;
  cursor: pointer;
  transition: all 150ms ease;
  border: 1px solid transparent;
  font-family: inherit;
}

.btn svg {
  width: 15px;
  height: 15px;
}

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

.btn-primary:hover {
  background: #4f52d4;
  border-color: #4f52d4;
}

.btn-secondary {
  background: var(--surface);
  color: var(--text-secondary);
  border-color: var(--border);
}

.btn-secondary:hover {
  background: var(--surface-2);
  color: var(--text);
  border-color: #3f3f46;
}

/* ── SKILLS ── */
.skills-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 16px;
}

.skill-group {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 20px;
}

.skill-group-label {
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--text-muted);
  margin-bottom: 14px;
}

.skill-group--accent {
  border-color: rgba(99, 102, 241, 0.3);
  background: rgba(99, 102, 241, 0.05);
}

.skill-group--accent .skill-group-label {
  color: var(--accent);
}

.skill-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.tag {
  font-size: 12.5px;
  padding: 4px 10px;
  background: var(--surface-2);
  border: 1px solid var(--border);
  border-radius: 20px;
  color: var(--text-secondary);
  transition: border-color 150ms ease, color 150ms ease;
}

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

/* ── EXPERIENCE ── */
.timeline {
  position: relative;
  padding-left: 24px;
}

.timeline::before {
  content: '';
  position: absolute;
  left: 0;
  top: 6px;
  bottom: 6px;
  width: 1px;
  background: var(--border);
}

.timeline-item {
  position: relative;
  padding: 0 0 40px 28px;
}

.timeline-item:last-child {
  padding-bottom: 0;
}

.timeline-item::before {
  content: '';
  position: absolute;
  left: -4px;
  top: 6px;
  width: 9px;
  height: 9px;
  border-radius: 50%;
  background: var(--border);
  border: 2px solid var(--bg);
  transition: background 150ms ease;
}

.timeline-item:hover::before {
  background: var(--accent);
}

.timeline-item:hover .exp-card {
  border-color: var(--accent);
}

.exp-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 20px 22px;
  transition: border-color 150ms ease;
}

.exp-header {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 12px;
  margin-bottom: 4px;
  flex-wrap: wrap;
}

.exp-company {
  font-weight: 600;
  font-size: 15px;
  color: var(--text);
}

.exp-dates {
  font-size: 12.5px;
  color: var(--text-muted);
  white-space: nowrap;
}

.exp-role {
  font-size: 13.5px;
  color: var(--accent);
  font-weight: 500;
  margin-bottom: 14px;
}

.exp-bullets {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.exp-bullets li {
  font-size: 13.5px;
  color: var(--text-secondary);
  padding-left: 16px;
  position: relative;
}

.exp-bullets li::before {
  content: '–';
  position: absolute;
  left: 0;
  color: var(--text-muted);
}

/* ── PROJECTS ── */
.projects-grid {
  display: flex;
  flex-direction: column;
  gap: 24px;
}

.project-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 28px;
  transition: border-color 200ms ease;
}

.project-card:hover {
  border-color: #3f3f46;
}

.project-header {
  margin-bottom: 20px;
}

.project-title-row {
  display: flex;
  align-items: center;
  gap: 12px;
  margin-bottom: 6px;
}

.project-name {
  font-size: 17px;
  font-weight: 600;
  color: var(--text);
  letter-spacing: -0.01em;
}

.project-tagline {
  font-size: 13.5px;
  color: var(--text-muted);
}

.project-badge {
  font-size: 10.5px;
  font-weight: 600;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  padding: 3px 8px;
  border-radius: 20px;
}

.badge-active {
  background: rgba(34, 197, 94, 0.12);
  color: #4ade80;
  border: 1px solid rgba(34, 197, 94, 0.2);
}

.badge-shipped {
  background: rgba(99, 102, 241, 0.12);
  color: #818cf8;
  border: 1px solid rgba(99, 102, 241, 0.2);
}

.project-body {
  display: flex;
  flex-direction: column;
  gap: 14px;
  margin-bottom: 20px;
}

.project-body p {
  font-size: 14px;
  color: var(--text-secondary);
  line-height: 1.75;
}

.project-challenge {
  background: var(--surface-2);
  border-left: 2px solid var(--accent);
  border-radius: 0 var(--radius) var(--radius) 0;
  padding: 14px 16px;
  font-size: 13.5px;
  color: var(--text-secondary);
  line-height: 1.7;
}

.challenge-label {
  display: block;
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 6px;
}

/* ── EDUCATION ── */
.edu-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 24px;
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 16px;
  flex-wrap: wrap;
}

.edu-degree {
  font-weight: 600;
  font-size: 15px;
  margin-bottom: 4px;
}

.edu-school {
  font-size: 13.5px;
  color: var(--text-secondary);
}

.edu-dates {
  font-size: 12.5px;
  color: var(--text-muted);
  white-space: nowrap;
}

/* ── LANGUAGES ── */
.lang-list {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
}

.lang-item {
  display: flex;
  align-items: center;
  gap: 10px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 12px 18px;
}

.lang-name {
  font-weight: 500;
  font-size: 14px;
}

.lang-level {
  font-size: 12.5px;
  color: var(--text-muted);
}

/* ── FOOTER ── */
footer {
  border-top: 1px solid var(--border);
  padding: 32px 0;
}

.footer-inner {
  max-width: 900px;
  margin: 0 auto;
  padding: 0 24px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  flex-wrap: wrap;
}

.footer-email {
  font-size: 13.5px;
  color: var(--text-muted);
  transition: color 150ms ease;
  display: flex;
  align-items: center;
  gap: 6px;
}

.footer-email svg {
  width: 14px;
  height: 14px;
}

.footer-email:hover { color: var(--text); }

.footer-copy {
  font-size: 12.5px;
  color: var(--text-muted);
}

/* ── ANIMATIONS ── */
.fade-in {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 500ms ease, transform 500ms ease;
}

.fade-in.visible {
  opacity: 1;
  transform: translateY(0);
}

/* ── MOBILE NAV ── */
@media (max-width: 600px) {
  .nav-links {
    display: none;
    position: absolute;
    top: var(--nav-h);
    left: 0;
    right: 0;
    background: rgba(9, 9, 11, 0.97);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--border);
    flex-direction: column;
    align-items: flex-start;
    gap: 0;
    padding: 8px 0;
  }

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

  .nav-links li { width: 100%; }

  .nav-links a {
    display: block;
    padding: 12px 24px;
    font-size: 14px;
    width: 100%;
  }

  .hamburger { display: flex; }

  #hero { padding: 60px 0 60px; }

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

  .edu-card { flex-direction: column; }
}

@media (max-width: 480px) {
  section { padding: 60px 0; }
  .hero-title { font-size: 32px; }
}