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

:root {
  --bg: #ffffff;
  --bg-alt: #f8fafc;
  --text-primary: #0f172a;
  --text-secondary: #475569;
  --accent: #2563eb;
  --accent-dark: #1d4ed8;
  --accent-light: #eff6ff;
  --border: #e2e8f0;
  --shadow-sm: 0 1px 3px rgba(15,23,42,0.08);
  --shadow-md: 0 4px 16px rgba(15,23,42,0.10);
  --radius: 12px;
  --nav-h: 68px;
}

html { scroll-behavior: smooth; }

body {
  font-family: 'Inter', sans-serif;
  color: var(--text-primary);
  background: var(--bg);
  line-height: 1.6;
  font-size: 16px;
}

.container {
  max-width: 1080px;
  margin: 0 auto;
  padding: 0 24px;
}

.section { padding: 88px 0; }
.section-alt { background: var(--bg-alt); }

.section-title {
  font-size: 2rem;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 48px;
  position: relative;
}

.section-title::after {
  content: '';
  display: block;
  width: 48px;
  height: 4px;
  background: var(--accent);
  border-radius: 2px;
  margin-top: 12px;
}

/* BUTTONS */
.btn {
  display: inline-block;
  padding: 12px 24px;
  border-radius: 8px;
  font-weight: 600;
  font-size: 0.95rem;
  text-decoration: none;
  transition: all 0.2s ease;
  cursor: pointer;
  border: 2px solid transparent;
}

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

.btn-outline {
  background: transparent;
  color: var(--accent);
  border-color: var(--accent);
}
.btn-outline:hover { background: var(--accent-light); }

.btn-linkedin {
  background: #0077b5;
  color: #fff;
  border-color: #0077b5;
}
.btn-linkedin:hover { background: #005f94; border-color: #005f94; }

.btn-lg { padding: 16px 36px; font-size: 1rem; }
.btn-sm { padding: 8px 16px; font-size: 0.875rem; }

/* NAVBAR */
.navbar {
  position: fixed;
  top: 0; left: 0; right: 0;
  height: var(--nav-h);
  background: rgba(255,255,255,0.95);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--border);
  z-index: 100;
  transition: box-shadow 0.2s;
}
.navbar.scrolled { box-shadow: var(--shadow-md); }

.nav-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: var(--nav-h);
}

.nav-logo {
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--accent);
  text-decoration: none;
  letter-spacing: -0.5px;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 8px;
  list-style: none;
}

.nav-links a {
  text-decoration: none;
  color: var(--text-secondary);
  font-size: 0.9rem;
  font-weight: 500;
  padding: 6px 12px;
  border-radius: 6px;
  transition: color 0.2s, background 0.2s;
}
.nav-links a:hover { color: var(--text-primary); background: var(--bg-alt); }

.nav-cta {
  background: var(--accent) !important;
  color: #fff !important;
  padding: 8px 18px !important;
}
.nav-cta:hover { background: var(--accent-dark) !important; }

.nav-linkedin {
  display: flex;
  align-items: center;
  color: var(--text-secondary) !important;
  padding: 6px 10px !important;
  border-radius: 6px;
  transition: color 0.2s, background 0.2s;
}
.nav-linkedin:hover { color: #0077b5 !important; background: #e8f3fb !important; }

.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 4px;
}
.nav-toggle span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--text-primary);
  border-radius: 2px;
  transition: all 0.3s;
}

/* HERO */
.hero {
  padding-top: calc(var(--nav-h) + 72px);
  padding-bottom: 88px;
  background: var(--bg);
}

.hero-inner {
  display: grid;
  grid-template-columns: 1fr auto;
  align-items: center;
  gap: 64px;
}

.hero-label {
  display: inline-block;
  background: var(--accent-light);
  color: var(--accent);
  font-size: 0.85rem;
  font-weight: 600;
  padding: 4px 12px;
  border-radius: 100px;
  margin-bottom: 20px;
  letter-spacing: 0.3px;
}

.hero-text h1 {
  font-size: clamp(2rem, 4vw, 3rem);
  font-weight: 700;
  line-height: 1.15;
  margin-bottom: 20px;
  color: var(--text-primary);
}

.hero-text h1 strong { color: var(--accent); }

.hero-text p {
  font-size: 1.1rem;
  color: var(--text-secondary);
  max-width: 520px;
  margin-bottom: 36px;
  line-height: 1.7;
}

.hero-actions { display: flex; gap: 16px; flex-wrap: wrap; }

.photo-wrapper {
  width: 220px;
  height: 220px;
  border-radius: 50%;
  overflow: hidden;
  border: 4px solid var(--accent-light);
  box-shadow: var(--shadow-md);
  flex-shrink: 0;
}

.photo-wrapper img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.photo-placeholder {
  width: 100%;
  height: 100%;
  background: var(--accent-light);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 3rem;
  font-weight: 700;
  color: var(--accent);
}

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

.about-text p {
  color: var(--text-secondary);
  margin-bottom: 16px;
  line-height: 1.8;
}
.about-text p strong { color: var(--text-primary); }

.about-badges {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  padding-top: 8px;
}

.badge {
  background: var(--accent-light);
  color: var(--accent);
  font-size: 0.85rem;
  font-weight: 600;
  padding: 6px 14px;
  border-radius: 100px;
}

/* SERVICES */
.services-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.service-card {
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 32px 28px;
  transition: box-shadow 0.2s, transform 0.2s;
}
.service-card:hover { box-shadow: var(--shadow-md); transform: translateY(-2px); }

.service-icon { font-size: 2rem; margin-bottom: 16px; }

.service-card h3 {
  font-size: 1.1rem;
  font-weight: 700;
  margin-bottom: 10px;
  color: var(--text-primary);
}

.service-card p { color: var(--text-secondary); font-size: 0.95rem; line-height: 1.7; }

/* PROJECTS */
.projects-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 24px;
}

.project-card {
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
  transition: box-shadow 0.2s, transform 0.2s;
  background: var(--bg);
}
.project-card:hover { box-shadow: var(--shadow-md); transform: translateY(-2px); }

.project-img-wrapper {
  height: 200px;
  overflow: hidden;
  background: var(--bg-alt);
}
.project-img-wrapper img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.3s;
}
.project-card:hover .project-img-wrapper img { transform: scale(1.03); }

.project-img-wrapper.no-img {
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.85rem;
  color: var(--text-secondary);
}

.project-info { padding: 24px; }

.project-tag {
  font-size: 0.75rem;
  font-weight: 600;
  color: var(--accent);
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.project-info h3 {
  font-size: 1.15rem;
  font-weight: 700;
  margin: 8px 0;
  color: var(--text-primary);
}

.project-info p {
  color: var(--text-secondary);
  font-size: 0.9rem;
  line-height: 1.6;
  margin-bottom: 16px;
}

.project-coming {
  display: flex;
  align-items: center;
  border-style: dashed;
  border-color: var(--border);
  background: var(--bg-alt);
}
.project-coming .project-info { padding: 32px; }

/* EXPERIENCE */
.timeline { position: relative; padding-left: 28px; }

.timeline::before {
  content: '';
  position: absolute;
  left: 7px;
  top: 8px;
  bottom: 8px;
  width: 2px;
  background: var(--border);
}

.timeline-item {
  position: relative;
  margin-bottom: 40px;
}
.timeline-item:last-child { margin-bottom: 0; }

.timeline-dot {
  position: absolute;
  left: -24px;
  top: 6px;
  width: 14px;
  height: 14px;
  border-radius: 50%;
  background: var(--accent);
  border: 3px solid var(--bg-alt);
  box-shadow: 0 0 0 2px var(--accent);
}

.timeline-date {
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--accent);
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.timeline-content h3 {
  font-size: 1.05rem;
  font-weight: 700;
  color: var(--text-primary);
  margin: 4px 0 2px;
}

.timeline-company {
  font-size: 0.875rem;
  color: var(--text-secondary);
  font-weight: 500;
  margin-bottom: 6px;
}

.timeline-content p {
  font-size: 0.9rem;
  color: var(--text-secondary);
  line-height: 1.6;
}

/* CONTACT */
.contact-inner {
  text-align: center;
  max-width: 560px;
  margin: 0 auto;
}

.contact .section-title::after { margin: 12px auto 0; }

.contact-sub {
  color: var(--text-secondary);
  font-size: 1.05rem;
  margin-bottom: 36px;
}

.contact-actions {
  display: flex;
  gap: 16px;
  justify-content: center;
  flex-wrap: wrap;
  margin-bottom: 20px;
}

.contact-email {
  color: var(--text-secondary);
  font-size: 0.9rem;
}

/* FOOTER */
.footer {
  background: var(--text-primary);
  color: #94a3b8;
  padding: 28px 0;
  text-align: center;
  font-size: 0.875rem;
}
.footer a { color: #94a3b8; text-decoration: none; }
.footer a:hover { color: #fff; }

/* SCROLL ANIMATIONS */
.fade-in {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.55s ease, transform 0.55s ease;
}
.fade-in.visible {
  opacity: 1;
  transform: translateY(0);
}

/* SCROLL-TO-TOP */
.scroll-top {
  position: fixed;
  bottom: 28px;
  right: 28px;
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background: var(--accent);
  color: #fff;
  border: none;
  font-size: 1.1rem;
  cursor: pointer;
  box-shadow: var(--shadow-md);
  opacity: 0;
  transform: translateY(12px);
  transition: opacity 0.25s, transform 0.25s, background 0.2s;
  pointer-events: none;
  z-index: 200;
}
.scroll-top.visible {
  opacity: 1;
  transform: translateY(0);
  pointer-events: auto;
}
.scroll-top:hover { background: var(--accent-dark); }

/* ACTIVE NAV LINK */
.nav-links a.active {
  color: var(--accent);
  background: var(--accent-light);
}

/* CONTACT EMAIL LINK */
.contact-email a {
  color: var(--text-secondary);
  text-decoration: none;
}
.contact-email a:hover { color: var(--accent); }

/* RESPONSIVE */
@media (max-width: 768px) {
  .nav-toggle { display: flex; }

  .nav-links {
    display: none;
    flex-direction: column;
    position: absolute;
    top: var(--nav-h);
    left: 0; right: 0;
    background: var(--bg);
    border-bottom: 1px solid var(--border);
    padding: 16px 24px 24px;
    gap: 4px;
  }
  .nav-links.open { display: flex; }
  .nav-links a { padding: 10px 12px; }

  .hero-inner {
    grid-template-columns: 1fr;
    text-align: center;
    gap: 40px;
  }
  .hero-photo { order: -1; display: flex; justify-content: center; }
  .hero-text p { margin-left: auto; margin-right: auto; }
  .hero-actions { justify-content: center; }

  .about-grid { grid-template-columns: 1fr; gap: 32px; }
  .services-grid { grid-template-columns: 1fr; }
  .projects-grid { grid-template-columns: 1fr; }

  .section-title { font-size: 1.6rem; }
  .section { padding: 64px 0; }
}