* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: Arial, Helvetica, sans-serif;
  background: #0f172a;
  color: #e5e7eb;
}

/* ─── PAGE VISIBILITY ──────────────────────────────── */
.page { display: none; }
.page.active { display: block; }

/* ─── HEADER ───────────────────────────────────────── */
header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 24px 8%;
  background: #020617;
  border-bottom: 1px solid #1e293b;
}

.logo {
  font-size: 22px;
  font-weight: 700;
  color: #ffffff;
  text-decoration: none;
  flex-shrink: 0;
}

.logo span { color: #38bdf8; }

nav {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
}

nav a {
  color: #64748b;
  text-decoration: none;
  margin-left: 24px;
  font-size: 15px;
  transition: color 0.2s;
}

nav a:hover,
nav a.active {
  color: #38bdf8;
}

.lang-toggle {
  background: transparent;
  border: 1px solid #1e293b;
  color: #64748b;
  padding: 6px 14px;
  border-radius: 6px;
  cursor: pointer;
  font-size: 13px;
  letter-spacing: 0.05em;
  transition: all 0.2s;
  font-family: inherit;
  margin-left: 24px;
  flex-shrink: 0;
}

.lang-toggle:hover {
  border-color: #38bdf8;
  color: #38bdf8;
}

/* ─── HERO ─────────────────────────────────────────── */
.hero {
  padding: 90px 8% 60px;
  max-width: 1100px;
}

.hero-tag {
  font-size: 12px;
  color: #38bdf8;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  margin: 0 0 20px;
}

.hero h1 {
  font-size: 56px;
  line-height: 1.1;
  margin: 0 0 24px;
  color: #ffffff;
}

.hero h1 em {
  font-style: italic;
  color: #38bdf8;
}

.hero-desc {
  font-size: 16px;
  line-height: 1.7;
  color: #64748b;
  max-width: 540px;
  margin: 0;
}

/* ─── SECTION ──────────────────────────────────────── */
.section {
  padding: 60px 8%;
}

.section-header {
  display: flex;
  align-items: baseline;
  gap: 14px;
  margin-bottom: 36px;
}

.section-header h2 {
  font-size: 28px;
  margin: 0;
  color: #ffffff;
}

.count {
  font-size: 12px;
  color: #38bdf8;
  font-family: monospace;
}

.divider {
  height: 1px;
  background: #1e293b;
  margin: 0 8%;
}

/* ─── STATS ────────────────────────────────────────── */
.stat-row {
  display: flex;
  gap: 56px;
  flex-wrap: wrap;
}

.stat {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.stat-value {
  font-size: 36px;
  font-weight: 700;
  color: #ffffff;
  line-height: 1;
}

.stat-label {
  font-size: 12px;
  color: #475569;
  letter-spacing: 0.04em;
}

/* ─── CARDS ────────────────────────────────────────── */
.card-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}

.card {
  background: #111827;
  border: 1px solid #1f2937;
  border-radius: 16px;
  padding: 24px;
}

.card-icon {
  display: inline-block;
  font-size: 11px;
  color: #38bdf8;
  letter-spacing: 0.1em;
  margin-bottom: 12px;
  font-family: monospace;
}

.card h3 {
  margin: 0 0 8px;
  color: #ffffff;
  font-size: 16px;
}

.card p {
  color: #64748b;
  line-height: 1.6;
  margin: 0;
  font-size: 14px;
}

/* ─── PROFILE ──────────────────────────────────────── */
.profile-text {
  font-size: 16px;
  line-height: 1.8;
  color: #94a3b8;
  max-width: 820px;
  margin: 0;
  border-left: 2px solid #1e293b;
  padding-left: 24px;
}

/* ─── EXPERIENCE ───────────────────────────────────── */
.exp-list {
  display: flex;
  flex-direction: column;
}

.exp-item {
  display: grid;
  grid-template-columns: 180px 1fr;
  gap: 32px;
  padding: 36px 0;
  border-bottom: 1px solid #1e293b;
}

.exp-item:first-child { padding-top: 0; }

.exp-meta {
  display: flex;
  flex-direction: column;
  gap: 8px;
  padding-top: 3px;
}

.exp-period {
  font-family: monospace;
  font-size: 13px;
  color: #475569;
}

.exp-industry {
  font-size: 12px;
  color: #334155;
  line-height: 1.6;
}

.exp-header {
  display: flex;
  align-items: baseline;
  gap: 12px;
  margin-bottom: 16px;
  flex-wrap: wrap;
}

.exp-header h3 {
  margin: 0;
  color: #ffffff;
  font-size: 18px;
}

.exp-company {
  font-size: 11px;
  letter-spacing: 0.1em;
  color: #38bdf8;
  text-transform: uppercase;
}

.exp-bullets {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 10px;
}

.exp-bullets li {
  color: #94a3b8;
  font-size: 14px;
  line-height: 1.6;
  padding-left: 20px;
  position: relative;
}

.exp-bullets li::before {
  content: '→';
  position: absolute;
  left: 0;
  color: #334155;
}

/* ─── EDUCATION ────────────────────────────────────── */
.edu-list {
  display: flex;
  flex-direction: column;
  gap: 24px;
}

.edu-item h3 {
  margin: 0 0 4px;
  color: #ffffff;
  font-size: 16px;
}

.edu-school {
  font-size: 12px;
  color: #475569;
  text-transform: uppercase;
  letter-spacing: 0.08em;
}

/* ─── COMING SOON ──────────────────────────────────── */
.coming-soon-card {
  background: #111827;
  border: 1px solid #1f2937;
  border-radius: 16px;
  padding: 56px 48px;
  max-width: 480px;
}

.coming-soon-icon {
  display: block;
  font-size: 11px;
  color: #38bdf8;
  letter-spacing: 0.1em;
  font-family: monospace;
  margin-bottom: 16px;
}

.coming-soon-card h3 {
  margin: 0 0 10px;
  color: #ffffff;
  font-size: 20px;
}

.coming-soon-card p {
  margin: 0;
  color: #475569;
  line-height: 1.7;
  font-size: 14px;
}

/* ─── VIDEOS ───────────────────────────────────────── */
.video-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
}

.video-wrap {
  position: relative;
  padding-bottom: 56.25%;
  height: 0;
  overflow: hidden;
  border-radius: 12px;
  background: #111827;
  border: 1px solid #1f2937;
}

.video-wrap iframe {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
}

.yt-channel-wrap {
  margin-top: 28px;
}

.yt-channel-link {
  display: inline-block;
  border: 1px solid #1e293b;
  color: #64748b;
  text-decoration: none;
  padding: 10px 24px;
  border-radius: 8px;
  font-size: 14px;
  transition: all 0.2s;
}

.yt-channel-link:hover {
  border-color: #ef4444;
  color: #ef4444;
}

/* ─── FOOTER ───────────────────────────────────────── */
footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 32px 8%;
  border-top: 1px solid #1e293b;
  color: #94a3b8;
  background: #020617;
}

.footer-left {
  display: flex;
  align-items: center;
  gap: 16px;
}

.footer-location { color: #334155; }

.footer-social {
  display: flex;
  align-items: center;
  gap: 16px;
}

.social-link {
  color: #334155;
  display: flex;
  align-items: center;
  transition: color 0.2s;
  text-decoration: none;
}

.social-link:nth-child(1):hover { color: #0a66c2; }
.social-link:nth-child(2):hover { color: #ff0000; }
.social-link:nth-child(3):hover { color: #e1306c; }

/* ─── RESPONSIVE ───────────────────────────────────── */
@media (max-width: 900px) {
  header {
    flex-direction: column;
    align-items: flex-start;
    gap: 16px;
  }

  nav a {
    margin-left: 0;
    margin-right: 16px;
  }

  .lang-toggle { margin-left: 0; }

  .hero h1 { font-size: 38px; }

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

  .exp-item {
    grid-template-columns: 1fr;
    gap: 12px;
  }

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

  .stat-row { gap: 32px; }

  footer {
    flex-direction: column;
    align-items: flex-start;
    gap: 20px;
  }
}