@import url('https://fonts.googleapis.com/css2?family=Space+Mono:ital,wght@0,400;0,700;1,400&family=Syne:wght@400;600;700;800&display=swap');

/* ── Reset & Base ── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

:root {
  --accent: #00ff9d;
  --bg: #0a0a0f;
  --bg2: #111118;
  --bg3: #16161f;
  --border: #1e1e2e;
  --text: #e8e4d9;
  --muted: #555;
  --muted2: #888;
  --font-display: 'Syne', sans-serif;
  --font-mono: 'Space Mono', monospace;
}

html { scroll-behavior: smooth; }

body {
  font-family: var(--font-display);
  background: var(--bg);
  color: var(--text);
  min-height: 100vh;
  overflow-x: hidden;
  line-height: 1.6;
}

a { color: inherit; text-decoration: none; }
img { display: block; max-width: 100%; height: auto; image-rendering: auto; -webkit-font-smoothing: antialiased; }
ul { list-style: none; }
button { cursor: pointer; font-family: var(--font-display); }

/* ── Scrollbar ── */
::-webkit-scrollbar { width: 6px; }
::-webkit-scrollbar-track { background: var(--bg); }
::-webkit-scrollbar-thumb { background: var(--border); border-radius: 3px; }

/* ── Nav ── */
.nav {
  position: sticky;
  top: 0;
  z-index: 100;
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 1.1rem 2.5rem;
  border-bottom: 1px solid var(--border);
  background: rgba(10,10,15,0.85);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
}

.nav-logo {
  font-family: var(--font-mono);
  font-size: 15px;
  color: var(--accent);
  letter-spacing: 0.06em;
}
.nav-logo span { color: var(--muted); }

.nav-links {
  display: flex;
  gap: 2rem;
  align-items: center;
}

.nav-links a {
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--muted2);
  letter-spacing: 0.12em;
  text-transform: uppercase;
  transition: color 0.2s;
}
.nav-links a:hover, .nav-links a.active { color: var(--accent); }

.nav-cv-btn {
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  padding: 0.45rem 1rem;
  border: 1px solid var(--accent);
  background: transparent;
  color: var(--accent);
  transition: background 0.2s, color 0.2s;
}
.nav-cv-btn:hover { background: var(--accent); color: var(--bg); }

/* ── Hamburger (mobile) ── */
.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  padding: 4px;
}
.nav-toggle span {
  display: block;
  width: 22px;
  height: 2px;
  background: var(--text);
  transition: transform 0.3s;
}
.nav-toggle.open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.nav-toggle.open span:nth-child(2) { opacity: 0; }
.nav-toggle.open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* ── Section wrapper ── */
.section {
  padding: 4.5rem 2.5rem;
  border-bottom: 1px solid var(--border);
}

.section-label {
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--accent);
  letter-spacing: 0.15em;
  text-transform: uppercase;
  margin-bottom: 2rem;
  display: flex;
  align-items: center;
  gap: 0.8rem;
}
.section-label::after {
  content: '';
  flex: 1;
  height: 1px;
  background: var(--border);
}

.section-title {
  font-size: clamp(1.9rem, 3.5vw, 2.6rem);
  font-weight: 800;
  letter-spacing: -0.02em;
  margin-bottom: 0.5rem;
}

/* ── Buttons ── */
.btn-primary {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  background: var(--accent);
  color: var(--bg);
  border: none;
  padding: 0.85rem 1.8rem;
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  font-weight: 700;
  transition: opacity 0.2s;
}
.btn-primary:hover { opacity: 0.85; }

.btn-secondary {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  background: transparent;
  color: var(--text);
  border: 1px solid var(--border);
  padding: 0.85rem 1.8rem;
  font-family: var(--font-mono);
  font-size: 13px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  transition: border-color 0.2s, color 0.2s;
}
.btn-secondary:hover { border-color: var(--accent); color: var(--accent); }

/* ── Tag / pill ── */
.tag {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 11px;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  padding: 4px 12px;
  border: 1px solid var(--border);
  color: var(--muted2);
}
.tag.accent { border-color: var(--accent); color: var(--accent); }

/* ── Stats bar ── */
.stats-bar {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  border-bottom: 1px solid var(--border);
}
.stat-item {
  padding: 2rem 2.5rem;
  border-right: 1px solid var(--border);
}
.stat-item:last-child { border-right: none; }
.stat-num {
  font-size: 3.2rem;
  font-weight: 800;
  color: var(--accent);
  letter-spacing: -0.03em;
  line-height: 1;
  margin-bottom: 0.3rem;
}
.stat-label {
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--muted);
  letter-spacing: 0.12em;
  text-transform: uppercase;
}

/* ── Terminal card ── */
.terminal {
  background: var(--bg2);
  border: 1px solid var(--border);
  border-radius: 8px;
  overflow: hidden;
}
.terminal-bar {
  background: var(--bg3);
  padding: 0.55rem 1rem;
  display: flex;
  align-items: center;
  gap: 6px;
  border-bottom: 1px solid var(--border);
}
.t-dot { width: 10px; height: 10px; border-radius: 50%; flex-shrink: 0; }
.t-title {
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--muted);
  margin-left: 8px;
}
.terminal-body {
  padding: 1.2rem 1.4rem;
  font-family: var(--font-mono);
  font-size: 13px;
  line-height: 2;
  color: var(--muted2);
}
.terminal-body .cmd { color: var(--accent); }
.terminal-body .val { color: var(--text); }
.terminal-body .num { color: #ff6b6b; }
.cursor {
  display: inline-block;
  width: 8px;
  height: 14px;
  background: var(--accent);
  vertical-align: middle;
  animation: blink 1s infinite;
}

/* ── Talks grid ── */
.talks-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1px;
  background: var(--border);
  border: 1px solid var(--border);
  margin-top: 2rem;
}
.talk-card {
  background: var(--bg);
  padding: 1.4rem 1.6rem;
  transition: background 0.2s;
}
.talk-card:hover { background: var(--bg2); }
.talk-year {
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--accent);
  letter-spacing: 0.12em;
  margin-bottom: 0.5rem;
}
.talk-title {
  font-size: 15px;
  font-weight: 700;
  line-height: 1.35;
  margin-bottom: 0.35rem;
  color: var(--text);
}
.talk-event {
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--muted);
}
.talk-lang {
  font-size: 11px;
  color: var(--muted);
  margin-left: 4px;
}

/* ── Blog list ── */
.blog-list { margin-top: 2rem; }
.blog-item {
  display: grid;
  grid-template-columns: 140px 1fr auto;
  align-items: center;
  gap: 1.2rem;
  padding: 1rem 0;
  border-bottom: 1px solid var(--border);
  transition: opacity 0.2s;
}
.blog-item:first-child { border-top: 1px solid var(--border); }
.blog-item:hover { opacity: 0.75; }
.blog-cat {
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--accent);
  letter-spacing: 0.1em;
  text-transform: uppercase;
}
.blog-title { font-size: 15px; color: var(--text); }
.blog-arrow {
  font-family: var(--font-mono);
  font-size: 15px;
  color: var(--muted);
  transition: color 0.2s, transform 0.2s;
}
.blog-item:hover .blog-arrow { color: var(--accent); transform: translateX(4px); }

/* ── Timeline (CV) ── */
.timeline { margin-top: 2rem; }
.tl-item {
  display: grid;
  grid-template-columns: 200px 1fr;
  gap: 2rem;
  padding-bottom: 2.5rem;
  margin-bottom: 2.5rem;
  border-bottom: 1px solid var(--border);
}
.tl-item:last-child { border-bottom: none; margin-bottom: 0; padding-bottom: 0; }
.tl-left {}
.tl-period {
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--accent);
  letter-spacing: 0.06em;
  margin-bottom: 0.3rem;
}
.tl-company {
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--muted2);
}
.tl-right {}
.tl-role {
  font-size: 1.1rem;
  font-weight: 700;
  margin-bottom: 0.75rem;
  color: var(--text);
}
.tl-bullets { padding-left: 0; }
.tl-bullets li {
  font-size: 14px;
  color: var(--muted2);
  line-height: 1.6;
  margin-bottom: 0.4rem;
  padding-left: 1rem;
  position: relative;
}
.tl-bullets li::before {
  content: '›';
  position: absolute;
  left: 0;
  color: var(--accent);
}

/* ── Certs grid ── */
.certs-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(220px, 1fr));
  gap: 1px;
  background: var(--border);
  border: 1px solid var(--border);
  margin-top: 2rem;
}
.cert-card {
  background: var(--bg);
  padding: 1.2rem 1.4rem;
}
.cert-name {
  font-size: 14px;
  font-weight: 700;
  margin-bottom: 0.3rem;
  color: var(--text);
}
.cert-meta {
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--muted);
  letter-spacing: 0.06em;
}

/* ── Contact section ── */
.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 3rem;
  margin-top: 2rem;
}
.contact-link-item {
  display: flex;
  flex-direction: column;
  gap: 0.3rem;
  padding: 1.2rem 0;
  border-bottom: 1px solid var(--border);
}
.contact-link-label {
  font-family: var(--font-mono);
  font-size: 10px;
  color: var(--muted);
  letter-spacing: 0.12em;
  text-transform: uppercase;
}
.contact-link-val {
  font-size: 14px;
  color: var(--text);
  transition: color 0.2s;
}
.contact-link-item:hover .contact-link-val { color: var(--accent); }

/* ── Footer ── */
.footer {
  padding: 1.5rem 2.5rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 1rem;
}
.footer-left, .footer-right {
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--muted);
}

/* ── Scroll reveal ── */
.reveal {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}
.reveal.visible {
  opacity: 1;
  transform: translateY(0);
}
.reveal-delay-1 { transition-delay: 0.1s; }
.reveal-delay-2 { transition-delay: 0.2s; }
.reveal-delay-3 { transition-delay: 0.3s; }

/* ── Page hero (inner pages) ── */
.page-hero {
  padding: 3.5rem 2.5rem 2.5rem;
  border-bottom: 1px solid var(--border);
}
.page-hero-tag {
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--accent);
  letter-spacing: 0.15em;
  text-transform: uppercase;
  margin-bottom: 1rem;
}
.page-hero h1 {
  font-size: clamp(2rem, 5vw, 3.5rem);
  font-weight: 800;
  letter-spacing: -0.03em;
  line-height: 1.05;
}

/* ── Responsive ── */
@media (max-width: 900px) {
  .nav-links { display: none; flex-direction: column; position: absolute; top: 100%; left: 0; right: 0; background: var(--bg); border-bottom: 1px solid var(--border); padding: 1.5rem 2.5rem; gap: 1.2rem; }
  .nav-links.open { display: flex; }
  .nav-toggle { display: flex; }

  .stats-bar { grid-template-columns: repeat(2, 1fr); }
  .stat-item:nth-child(2) { border-right: none; }
  .stat-item:nth-child(3) { border-right: 1px solid var(--border); }

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

  .blog-item { grid-template-columns: 100px 1fr auto; }

  .tl-item { grid-template-columns: 1fr; gap: 0.5rem; }
  .tl-period { margin-bottom: 0.15rem; }

  .contact-grid { grid-template-columns: 1fr; gap: 0; }

  .section { padding: 3rem 1.5rem; }
  .nav { padding: 1rem 1.5rem; }
  .stats-bar .stat-item { padding: 1.5rem; }
  .footer { padding: 1.2rem 1.5rem; }
  .page-hero { padding: 2.5rem 1.5rem; }
}

@media (max-width: 480px) {
  .stats-bar { grid-template-columns: 1fr 1fr; }
  .blog-item { grid-template-columns: 1fr; }
  .blog-cat { display: none; }
}

/* ── Blinking cursor animation ── */
@keyframes blink { 0%,100%{opacity:1} 50%{opacity:0} }