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

:root {
  --white:   #ffffff;
  --bg-light:#f7f8fa;
  --blue:    #1d4ed8;
  --blue-lt: #eff6ff;
  --blue-md: #2563eb;
  --text:    #0f172a;
  --muted:   #64748b;
  --border:  #e2e8f0;
  --shadow:  0 1px 4px rgba(0,0,0,.06), 0 4px 16px rgba(0,0,0,.06);
  --shadow-h:0 4px 12px rgba(0,0,0,.08), 0 12px 40px rgba(0,0,0,.10);
  --radius:  10px;
  --font:    'Outfit', sans-serif;
  --font-display: 'Playfair Display', serif;
}

html { scroll-behavior: smooth; }

body {
  font-family: var(--font);
  background: var(--white);
  color: var(--text);
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
}

/* ── UTILS ── */
.container { max-width: 1100px; margin: 0 auto; padding: 0 28px; }
.bg-light   { background: var(--bg-light); }
section     { padding: 104px 0; }

.btn {
  display: inline-flex;
  align-items: center;
  padding: 13px 30px;
  border-radius: var(--radius);
  font-family: var(--font);
  font-weight: 600;
  font-size: 0.95rem;
  text-decoration: none;
  border: 2px solid transparent;
  transition: all .2s;
  cursor: pointer;
}
.btn-primary  { background: var(--blue-md); color: #fff; }
.btn-primary:hover { background: var(--blue); transform: translateY(-2px); box-shadow: 0 6px 24px rgba(37,99,235,.25); }
.btn-outline  { background: transparent; color: var(--text); border-color: var(--border); }
.btn-outline:hover { border-color: var(--text); transform: translateY(-2px); }

.tag {
  font-size: 0.78rem;
  font-weight: 500;
  color: var(--blue-md);
  background: var(--blue-lt);
  padding: 4px 11px;
  border-radius: 5px;
}

/* section header */
.section-header { margin-bottom: 56px; }
.section-tag {
  display: inline-block;
  font-size: 0.78rem;
  font-weight: 600;
  letter-spacing: 1.5px;
  text-transform: uppercase;
  color: var(--blue-md);
  margin-bottom: 12px;
}
.section-header h2 {
  font-family: var(--font-display);
  font-size: clamp(1.9rem, 3.5vw, 2.6rem);
  font-weight: 700;
  color: var(--text);
  line-height: 1.2;
}
.section-note {
  margin-top: 10px;
  color: var(--muted);
  font-size: 0.93rem;
}

/* reveal */
.reveal-up {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity .65s ease, transform .65s ease;
}
.reveal-up.visible { opacity: 1; transform: none; }
.delay-1 { transition-delay: .1s; }
.delay-2 { transition-delay: .2s; }
.delay-3 { transition-delay: .3s; }

/* ── NAVBAR ── */
#navbar {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 100;
  background: rgba(255,255,255,.92);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
  transition: box-shadow .3s;
}
#navbar.scrolled { box-shadow: 0 1px 16px rgba(0,0,0,.07); }

.nav-inner {
  max-width: 1100px;
  margin: 0 auto;
  padding: 0 28px;
  height: 66px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.nav-logo {
  font-family: var(--font-display);
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--text);
  text-decoration: none;
}

.nav-links { list-style: none; display: flex; gap: 4px; align-items: center; }
.nav-links a {
  text-decoration: none;
  color: var(--muted);
  font-size: 0.9rem;
  font-weight: 500;
  padding: 7px 14px;
  border-radius: 7px;
  transition: color .15s, background .15s;
}
.nav-links a:hover { color: var(--text); background: var(--bg-light); }
.nav-cta { color: var(--blue-md) !important; background: var(--blue-lt) !important; font-weight: 600 !important; }
.nav-cta:hover { background: #dbeafe !important; }

.burger {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 4px;
}
.burger span { display: block; width: 22px; height: 2px; background: var(--text); border-radius: 2px; }

.nav-mobile { display: none; flex-direction: column; list-style: none; padding: 12px 28px 18px; border-top: 1px solid var(--border); }
.nav-mobile.open { display: flex; }
.nav-mobile a { text-decoration: none; color: var(--muted); padding: 11px 0; border-bottom: 1px solid var(--border); font-size: 0.95rem; font-weight: 500; }

/* ── HERO ── */
#hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  padding-top: 80px;
}

.hero-inner {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 80px;
  align-items: center;
  width: 100%;
}

.hero-kicker {
  font-size: 0.85rem;
  font-weight: 600;
  letter-spacing: 2px;
  text-transform: uppercase;
  color: var(--blue-md);
  margin-bottom: 16px;
}

.hero-name {
  font-family: var(--font-display);
  font-size: clamp(2.8rem, 5.5vw, 4.2rem);
  font-weight: 700;
  line-height: 1.15;
  color: var(--text);
  margin-bottom: 20px;
}
.hero-name em {
  font-style: italic;
  color: var(--blue-md);
}

.hero-desc {
  color: var(--muted);
  font-size: 1.05rem;
  line-height: 1.8;
  max-width: 520px;
  margin-bottom: 36px;
}

.hero-actions { display: flex; gap: 14px; flex-wrap: wrap; }

/* photo */
.hero-photo-wrap { position: relative; flex-shrink: 0; }

.photo-frame {
  width: 300px;
  height: 360px;
  border-radius: 16px;
  overflow: hidden;
  border: 1px solid var(--border);
  box-shadow: var(--shadow-h);
  background: var(--bg-light);
}

.hero-photo {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center top;
  display: block;
}

.photo-badge {
  position: absolute;
  bottom: -16px;
  left: 50%;
  transform: translateX(-50%);
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: 999px;
  padding: 8px 18px;
  font-size: 0.82rem;
  font-weight: 600;
  color: var(--text);
  white-space: nowrap;
  box-shadow: var(--shadow);
  display: flex;
  align-items: center;
  gap: 8px;
}
.badge-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: #22c55e;
  box-shadow: 0 0 0 3px rgba(34,197,94,.2);
  animation: pulse-dot 2s ease-in-out infinite;
}
@keyframes pulse-dot { 0%,100% { box-shadow: 0 0 0 3px rgba(34,197,94,.2); } 50% { box-shadow: 0 0 0 6px rgba(34,197,94,.1); } }

/* ── ABOUT ── */
.about-grid {
  display: grid;
  grid-template-columns: 1.1fr 1fr;
  gap: 64px;
  align-items: start;
}

.about-text p {
  color: var(--muted);
  margin-bottom: 16px;
  font-size: 0.97rem;
  line-height: 1.85;
}
.about-text strong { color: var(--text); font-weight: 600; }

.about-cards {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 14px;
}

.info-card {
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 22px 20px;
  display: flex;
  flex-direction: column;
  gap: 4px;
  box-shadow: var(--shadow);
  transition: box-shadow .2s, transform .2s;
}
.info-card:hover { box-shadow: var(--shadow-h); transform: translateY(-2px); }
.info-card strong { font-family: var(--font-display); font-size: 1.25rem; font-weight: 700; color: var(--blue-md); }
.info-card span { font-size: 0.8rem; color: var(--muted); }

.vw-logo { width: 80px; height: auto; display: block; margin-top: auto; }
.info-card-vw { justify-content: space-between; }

/* ── SKILLS ── */
.skills-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
}

.skill-card {
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 28px 24px;
  box-shadow: var(--shadow);
  transition: box-shadow .2s, transform .2s, border-color .2s;
}
.skill-card:hover { box-shadow: var(--shadow-h); transform: translateY(-3px); border-color: #c7d7f7; }

.skill-icon {
  font-size: 1.4rem;
  color: var(--blue-md);
  margin-bottom: 14px;
  display: block;
}
.skill-card h3 {
  font-weight: 700;
  font-size: 1rem;
  margin-bottom: 14px;
  color: var(--text);
}
.skill-card ul { list-style: none; display: flex; flex-direction: column; gap: 9px; }
.skill-card li {
  font-size: 0.88rem;
  color: var(--muted);
  padding-left: 12px;
  position: relative;
}
.skill-card li::before {
  content: '·';
  position: absolute;
  left: 0;
  color: var(--blue-md);
  font-weight: 700;
}

/* ── TIMELINE ── */
.timeline { max-width: 860px; }

.timeline-item {
  display: grid;
  grid-template-columns: 28px 1fr;
  gap: 24px;
  margin-bottom: 48px;
}
.timeline-item:last-child { margin-bottom: 0; }

.tl-marker { display: flex; flex-direction: column; align-items: center; padding-top: 6px; }
.tl-dot {
  width: 14px;
  height: 14px;
  border-radius: 50%;
  background: var(--blue-md);
  border: 3px solid var(--white);
  box-shadow: 0 0 0 2px var(--blue-md);
  flex-shrink: 0;
}
.tl-line { flex: 1; width: 1px; background: var(--border); margin-top: 10px; }

.tl-content {
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 28px 32px;
  box-shadow: var(--shadow);
}

.tl-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 16px;
  margin-bottom: 12px;
  flex-wrap: wrap;
}
.tl-header h3 { font-size: 1.1rem; font-weight: 700; color: var(--text); margin-bottom: 4px; }
.tl-company {
  font-size: 0.82rem;
  font-weight: 600;
  color: var(--blue-md);
  background: var(--blue-lt);
  padding: 3px 10px;
  border-radius: 5px;
}
.tl-date { font-size: 0.82rem; color: var(--muted); white-space: nowrap; padding-top: 3px; }

.tl-content p { color: var(--muted); font-size: 0.92rem; line-height: 1.8; margin-bottom: 16px; }
.tl-tags { display: flex; flex-wrap: wrap; gap: 8px; }

/* ── PROJECTS ── */
.projects-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 22px;
}

.project-card {
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 28px;
  box-shadow: var(--shadow);
  display: flex;
  flex-direction: column;
  gap: 14px;
  transition: box-shadow .25s, transform .25s, border-color .25s;
}
.project-card:hover { box-shadow: var(--shadow-h); transform: translateY(-4px); border-color: #c7d7f7; }

.project-top {
  display: flex;
  justify-content: space-between;
  align-items: center;
}
.project-num { font-size: 0.75rem; color: var(--muted); font-weight: 500; letter-spacing: 1px; }
.project-type {
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--blue-md);
  background: var(--blue-lt);
  padding: 3px 10px;
  border-radius: 5px;
}

.project-card h3 { font-size: 1.05rem; font-weight: 700; color: var(--text); }
.project-card p { font-size: 0.88rem; color: var(--muted); line-height: 1.7; flex: 1; }

.project-bottom {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 12px;
  flex-wrap: wrap;
  padding-top: 8px;
  border-top: 1px solid var(--border);
}
.project-tags { display: flex; flex-wrap: wrap; gap: 6px; }
.project-link {
  font-size: 0.83rem;
  font-weight: 600;
  color: var(--blue-md);
  text-decoration: none;
  white-space: nowrap;
  transition: opacity .15s;
}
.project-link:hover { opacity: .7; }

/* ── CONTACT ── */
.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1.5fr;
  gap: 64px;
  align-items: start;
}

.contact-info { display: flex; flex-direction: column; }
.contact-row {
  display: flex;
  flex-direction: column;
  gap: 2px;
  text-decoration: none;
  color: var(--text);
  padding: 18px 0;
  border-bottom: 1px solid var(--border);
  transition: color .15s, padding-left .2s;
  font-size: 0.93rem;
  font-weight: 500;
}
.contact-row:first-child { border-top: 1px solid var(--border); }
.contact-row:hover { color: var(--blue-md); padding-left: 6px; }
.contact-label { font-size: 0.72rem; font-weight: 600; letter-spacing: 1.5px; text-transform: uppercase; color: var(--muted); margin-bottom: 2px; }

.contact-form { display: flex; flex-direction: column; gap: 18px; }
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.form-group { display: flex; flex-direction: column; gap: 6px; }
.form-group label { font-size: 0.83rem; font-weight: 600; color: var(--text); }
.form-group input,
.form-group textarea {
  padding: 12px 15px;
  border: 1.5px solid var(--border);
  border-radius: var(--radius);
  font-family: var(--font);
  font-size: 0.93rem;
  color: var(--text);
  background: var(--white);
  transition: border-color .15s, box-shadow .15s;
  resize: vertical;
}
.form-group input::placeholder,
.form-group textarea::placeholder { color: #b4bec9; }
.form-group input:focus,
.form-group textarea:focus {
  outline: none;
  border-color: var(--blue-md);
  box-shadow: 0 0 0 3px rgba(37,99,235,.1);
}
.form-note { font-size: 0.88rem; color: #16a34a; }

/* ── FOOTER ── */
footer {
  background: var(--text);
  padding: 32px 0;
}
.footer-inner {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 12px;
  font-size: 0.85rem;
  color: #94a3b8;
}

/* ── RESPONSIVE ── */
@media (max-width: 1024px) {
  .skills-grid { grid-template-columns: repeat(2, 1fr); }
  .projects-grid { grid-template-columns: 1fr 1fr; }
}

@media (max-width: 860px) {
  .hero-inner { grid-template-columns: 1fr; gap: 56px; }
  .hero-photo-wrap { display: flex; justify-content: center; order: -1; margin-bottom: 16px; }
  .about-grid { grid-template-columns: 1fr; gap: 40px; }
  .contact-grid { grid-template-columns: 1fr; gap: 48px; }
}

@media (max-width: 640px) {
  section { padding: 72px 0; }
  .container { padding: 0 20px; }
  .nav-links { display: none; }
  .burger { display: flex; }
  .projects-grid { grid-template-columns: 1fr; }
  .skills-grid { grid-template-columns: 1fr 1fr; }
  .form-row { grid-template-columns: 1fr; }
  .photo-frame { width: 240px; height: 290px; }
  .footer-inner { flex-direction: column; text-align: center; }
}