:root {
    --navy: #0f172a;
    --navy-mid: #1e2d45;
    --navy-light: #263450;
    --slate: #4a6080;
    --blue: #4f8ef7;
    --blue-dim: #1d4ed8;
    --cyan: #38bdf8;
    --gray-400: #c8d8eb;
    --gray-200: #e8f0f8;
    --white: #f1f5fb;
  }
  *, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
  html { scroll-behavior: smooth; }
  body {
    background: var(--navy);
    color: var(--white);
    font-family: 'DM Sans', sans-serif;
    font-weight: 400;
    line-height: 1.75;
    overflow-x: hidden;
  }
  nav {
    position: fixed; top: 0; left: 0; right: 0; z-index: 100;
    display: flex; align-items: center; justify-content: space-between;
    padding: 1.25rem 6vw;
    background: rgba(15,23,42,0.92);
    backdrop-filter: blur(14px);
    border-bottom: 1px solid rgba(59,130,246,0.12);
  }
  .nav-logo { font-family: 'Syne', sans-serif; font-weight: 800; font-size: 1.1rem; letter-spacing: 0.04em; color: var(--white); }
  .nav-logo span { color: var(--cyan); }
  .nav-links { display: flex; gap: 2.2rem; list-style: none; }
  .nav-links a { font-size: 0.82rem; font-weight: 500; letter-spacing: 0.08em; text-transform: uppercase; color: var(--gray-400); text-decoration: none; transition: color 0.2s; }
  .nav-links a:hover { color: var(--cyan); }
  .nav-controls { display: flex; align-items: center; gap: 0.75rem; }
  .lang-switcher { display: flex; align-items: center; gap: 0.25rem; background: rgba(255,255,255,0.06); border: 1px solid rgba(255,255,255,0.1); border-radius: 2rem; padding: 0.2rem 0.3rem; }
  .lang-btn { background: none; border: none; cursor: pointer; font-family: 'DM Sans', sans-serif; font-size: 0.72rem; font-weight: 600; letter-spacing: 0.08em; color: var(--gray-400); padding: 0.25rem 0.55rem; border-radius: 2rem; transition: all 0.18s; }
  .lang-btn:hover { color: var(--white); }
  .lang-btn.active { background: var(--blue); color: #fff; }
  .theme-toggle { background: rgba(255,255,255,0.06); border: 1px solid rgba(255,255,255,0.1); border-radius: 50%; width: 34px; height: 34px; cursor: pointer; display: flex; align-items: center; justify-content: center; color: var(--gray-200); transition: all 0.18s; }
  .theme-toggle:hover { border-color: var(--cyan); color: var(--cyan); }

  .hero {
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 8rem 6vw 5rem;
    position: relative; overflow: hidden;
  }
  .hero-inner {
    display: grid;
    grid-template-columns: 1fr auto;
    align-items: center;
    gap: 4rem;
    max-width: 1200px;
    margin: 0 auto;
  }
  .hero-bg {
    position: absolute; inset: 0; pointer-events: none;
    background:
      radial-gradient(ellipse 60% 55% at 65% 40%, rgba(29,78,216,0.18) 0%, transparent 70%),
      radial-gradient(ellipse 40% 40% at 20% 70%, rgba(6,182,212,0.09) 0%, transparent 60%);
  }
  .hero-grid {
    position: absolute; inset: 0; pointer-events: none; opacity: 0.04;
    background-image: linear-gradient(rgba(59,130,246,0.6) 1px, transparent 1px), linear-gradient(90deg, rgba(59,130,246,0.6) 1px, transparent 1px);
    background-size: 60px 60px;
  }
  .hero-content { position: relative; max-width: 680px; }
  .hero-photo-wrap {
    position: relative; flex-shrink: 0;
    width: 320px; height: 400px;
    border-radius: 1.5rem; overflow: hidden;
    border: 1px solid rgba(59,130,246,0.2);
    box-shadow: 0 0 60px rgba(29,78,216,0.25), 0 0 0 1px rgba(59,130,246,0.1);
    animation: fadeUp 0.8s 0.3s ease both;
  }
  .hero-photo-wrap::after {
    content: '';
    position: absolute; inset: 0;
    background: linear-gradient(180deg, transparent 55%, rgba(10,15,30,0.6) 100%);
  }
  .hero-photo-wrap img {
    width: 100%; height: 100%; object-fit: cover; object-position: center top;
    display: block;
  }
  .hero-tag {
    display: inline-flex; align-items: center; gap: 0.5rem;
    font-size: 0.72rem; font-weight: 500; letter-spacing: 0.14em;
    text-transform: uppercase; color: var(--cyan);
    border: 1px solid rgba(6,182,212,0.3); border-radius: 2rem;
    padding: 0.35rem 1rem; margin-bottom: 1.8rem;
    animation: fadeUp 0.6s ease both;
  }
  .hero-tag::before { content: ''; width: 6px; height: 6px; border-radius: 50%; background: var(--cyan); animation: pulse 1.8s infinite; }
  @keyframes pulse { 0%,100%{opacity:1;transform:scale(1)} 50%{opacity:0.4;transform:scale(0.7)} }
  h1 { font-family: 'Syne', sans-serif; font-size: clamp(2.6rem, 5vw, 4.4rem); font-weight: 800; line-height: 1.05; letter-spacing: -0.02em; animation: fadeUp 0.7s 0.1s ease both; }
  h1 em { font-style: normal; color: var(--blue); }
  .hero-sub { font-size: 1.05rem; font-weight: 400; color: var(--gray-200); margin-top: 1.4rem; max-width: 520px; line-height: 1.75; animation: fadeUp 0.7s 0.2s ease both; }
  .hero-pills { display: flex; flex-wrap: wrap; gap: 0.6rem; margin-top: 2rem; animation: fadeUp 0.7s 0.3s ease both; }
  .pill { font-size: 0.75rem; font-weight: 500; letter-spacing: 0.06em; padding: 0.4rem 1rem; border-radius: 2rem; background: rgba(59,130,246,0.1); border: 1px solid rgba(59,130,246,0.25); color: var(--blue); }
  .hero-cta { display: flex; gap: 1rem; flex-wrap: wrap; margin-top: 2.5rem; animation: fadeUp 0.7s 0.4s ease both; }
  .btn { display: inline-flex; align-items: center; gap: 0.5rem; padding: 0.8rem 1.8rem; border-radius: 0.4rem; font-family: 'DM Sans', sans-serif; font-size: 0.88rem; font-weight: 500; text-decoration: none; transition: all 0.22s; cursor: pointer; border: none; }
  .btn-primary { background: var(--blue); color: #fff; box-shadow: 0 4px 24px rgba(59,130,246,0.35); }
  .btn-primary:hover { background: #2563eb; transform: translateY(-2px); box-shadow: 0 8px 32px rgba(59,130,246,0.45); }
  .btn-ghost { background: transparent; color: var(--gray-200); border: 1px solid rgba(255,255,255,0.15); }
  .btn-ghost:hover { border-color: var(--cyan); color: var(--cyan); }
  .hero-stats { display: flex; gap: 2.5rem; flex-wrap: wrap; margin-top: 3rem; animation: fadeUp 0.7s 0.5s ease both; }
  .stat { display: flex; flex-direction: column; gap: 0.2rem; }
  .stat-num { font-family: 'Syne', sans-serif; font-size: 2rem; font-weight: 800; color: var(--white); line-height: 1; }
  .stat-num span { color: var(--cyan); }
  .stat-label { font-size: 0.72rem; color: var(--gray-200); letter-spacing: 0.06em; text-transform: uppercase; }
  @keyframes fadeUp { from { opacity: 0; transform: translateY(22px); } to { opacity: 1; transform: translateY(0); } }

  section { padding: 6rem 6vw; }
  .section-inner { max-width: 1200px; margin: 0 auto; }
  .section-label { font-size: 0.72rem; font-weight: 500; letter-spacing: 0.14em; text-transform: uppercase; color: var(--cyan); margin-bottom: 0.8rem; }
  h2 { font-family: 'Syne', sans-serif; font-size: clamp(1.8rem, 3.5vw, 2.6rem); font-weight: 700; line-height: 1.15; letter-spacing: -0.01em; margin-bottom: 3rem; }
  h2 .dim { color: var(--gray-400); font-weight: 400; }

  .about { background: var(--navy-mid); }
  .about-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 4rem; align-items: start; }
  .about-text p { color: var(--gray-200); font-size: 0.97rem; margin-bottom: 1.2rem; }
  .about-text p strong { color: var(--white); font-weight: 500; }
  .about-cards { display: flex; flex-direction: column; gap: 1rem; }
  .about-card { background: var(--navy-light); border: 1px solid rgba(59,130,246,0.12); border-radius: 0.75rem; padding: 1.4rem 1.6rem; transition: border-color 0.2s, transform 0.2s; }
  .about-card:hover { border-color: rgba(59,130,246,0.4); transform: translateX(4px); }
  .about-card-icon { font-size: 1.5rem; margin-bottom: 0.6rem; }
  .about-card h3 { font-family: 'Syne', sans-serif; font-size: 0.95rem; font-weight: 600; margin-bottom: 0.4rem; }
  .about-card p { font-size: 0.83rem; color: var(--gray-200); line-height: 1.6; }

  .skills-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(260px, 1fr)); gap: 1.5rem; }
  .skill-card { background: var(--navy-mid); border: 1px solid rgba(59,130,246,0.1); border-radius: 0.75rem; padding: 1.6rem; transition: border-color 0.2s, transform 0.22s; }
  .skill-card:hover { border-color: rgba(59,130,246,0.4); transform: translateY(-4px); }
  .skill-card-header { display: flex; align-items: center; gap: 0.8rem; margin-bottom: 1rem; }
  .skill-icon { width: 40px; height: 40px; border-radius: 0.5rem; background: rgba(59,130,246,0.12); display: flex; align-items: center; justify-content: center; font-size: 1.2rem; flex-shrink: 0; }
  .skill-card h3 { font-family: 'Syne', sans-serif; font-size: 0.95rem; font-weight: 700; }
  .skill-tags { display: flex; flex-wrap: wrap; gap: 0.4rem; margin-top: 0.8rem; }
  .tag { font-size: 0.7rem; padding: 0.25rem 0.65rem; border-radius: 0.25rem; background: rgba(38,52,80,0.9); color: var(--c2,#c8d8eb); border: 1px solid rgba(255,255,255,0.07); }

  .experience { background: var(--navy-mid); }
  .timeline { display: flex; flex-direction: column; gap: 0; }
  .tl-item { display: grid; grid-template-columns: 180px 1px 1fr; gap: 0 2rem; position: relative; }
  .tl-date { text-align: right; padding-top: 0.2rem; font-size: 0.78rem; color: var(--gray-200); line-height: 1.5; padding-bottom: 2.5rem; }
  .tl-date strong { display: block; color: var(--white); font-weight: 500; }
  .tl-line { display: flex; flex-direction: column; align-items: center; position: relative; }
  .tl-dot { width: 12px; height: 12px; border-radius: 50%; flex-shrink: 0; margin-top: 0.25rem; background: var(--blue); border: 2px solid var(--navy-mid); box-shadow: 0 0 0 3px rgba(59,130,246,0.2); z-index: 1; }
  .tl-connector { flex: 1; width: 1px; background: rgba(59,130,246,0.2); margin-top: 4px; }
  .tl-item:last-child .tl-connector { display: none; }
  .tl-content { padding-bottom: 2.5rem; }
  .tl-content h3 { font-family: 'Syne', sans-serif; font-size: 1.05rem; font-weight: 700; margin-bottom: 0.2rem; }
  .tl-company { font-size: 0.8rem; color: var(--cyan); font-weight: 500; margin-bottom: 0.8rem; }
  .tl-content ul { list-style: none; font-size: 0.86rem; color: var(--gray-200); line-height: 1.7; }
  .tl-content ul li::before { content: "→ "; color: var(--blue); font-size: 0.75rem; }
  .tl-badge { display: inline-block; font-size: 0.65rem; font-weight: 600; letter-spacing: 0.1em; text-transform: uppercase; padding: 0.2rem 0.6rem; border-radius: 0.25rem; margin-left: 0.5rem; background: rgba(59,130,246,0.15); color: var(--blue); border: 1px solid rgba(59,130,246,0.25); }

  .coaching-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 4rem; align-items: start; }
  .coaching-text p { color: var(--gray-200); font-size: 0.97rem; margin-bottom: 1.2rem; }
  .coaching-text p strong { color: var(--white); font-weight: 500; }
  .coaching-offers { display: flex; flex-direction: column; gap: 1rem; }
  .offer-card { background: var(--navy-mid); border: 1px solid rgba(6,182,212,0.15); border-radius: 0.75rem; padding: 1.4rem 1.6rem; transition: border-color 0.2s, transform 0.2s; display: flex; align-items: flex-start; gap: 1rem; }
  .offer-card:hover { border-color: rgba(6,182,212,0.45); transform: translateX(4px); }
  .offer-num { font-family: 'Syne', sans-serif; font-size: 1.6rem; font-weight: 800; color: rgba(6,182,212,0.25); line-height: 1; flex-shrink: 0; }
  .offer-card h3 { font-family: 'Syne', sans-serif; font-size: 0.93rem; font-weight: 600; margin-bottom: 0.3rem; color: var(--white); }
  .offer-card p { font-size: 0.81rem; color: var(--gray-200); line-height: 1.6; }

  .certs { background: var(--navy-mid); }
  .certs-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(220px, 1fr)); gap: 1rem; }
  .cert-card { background: var(--navy-light); border: 1px solid rgba(255,255,255,0.06); border-radius: 0.6rem; padding: 1.2rem; display: flex; align-items: center; gap: 1rem; transition: border-color 0.2s, transform 0.2s; }
  .cert-card:hover { border-color: rgba(59,130,246,0.3); transform: translateY(-2px); }
  .cert-badge { width: 36px; height: 36px; border-radius: 0.4rem; flex-shrink: 0; background: linear-gradient(135deg, #1e40af, #1d4ed8); display: flex; align-items: center; justify-content: center; font-size: 1rem; }
  .cert-card span { font-size: 0.79rem; color: var(--gray-200); line-height: 1.45; }
  .cert-card span strong { display: block; color: var(--white); font-weight: 500; font-size: 0.8rem; }

  .contact { text-align: center; padding: 6rem 6vw 8rem; background: linear-gradient(180deg, var(--navy) 0%, #0a1628 100%); }
  .contact h2 { margin-bottom: 1rem; }
  .contact-sub { color: var(--gray-200); max-width: 480px; margin: 0 auto 2.5rem; font-size: 0.97rem; }
  .contact-links { display: flex; justify-content: center; gap: 1rem; flex-wrap: wrap; margin-top: 2rem; }
  .contact-chip { display: flex; align-items: center; gap: 0.6rem; padding: 0.7rem 1.4rem; border-radius: 0.4rem; background: var(--navy-light); border: 1px solid rgba(255,255,255,0.12); color: var(--gray-200); font-size: 0.85rem; text-decoration: none; transition: all 0.2s; }
  .contact-chip:hover { border-color: var(--blue); color: var(--white); }
  .contact-chip svg { flex-shrink: 0; }

  footer { text-align: center; padding: 1.5rem; border-top: 1px solid rgba(255,255,255,0.08); font-size: 0.75rem; color: var(--gray-400); }
  .section-divider { height: 1px; background: linear-gradient(90deg, transparent, rgba(59,130,246,0.2), transparent); margin: 0 6vw; }

  @media(max-width: 900px) {
    .hero-inner { grid-template-columns: 1fr; }
    .hero-photo-wrap { width: 200px; height: 250px; margin: 0 auto; }
  }
  @media(max-width: 768px) {
    .about-grid, .coaching-grid { grid-template-columns: 1fr; gap: 2.5rem; }
    .tl-item { grid-template-columns: 1fr; }
    .tl-date { text-align: left; padding-bottom: 0.3rem; }
    .tl-line { display: none; }
    .tl-content { padding-bottom: 2rem; border-left: 2px solid rgba(59,130,246,0.2); padding-left: 1.2rem; margin-left: 0.4rem; }
    nav .nav-links { display: none; }
  }