.btn-primary {
  display: inline-flex; align-items: center; gap: 0.5rem; padding: 0.85rem 1.8rem;
  background: var(--text); color: #fff;
  font-family: 'Onest', sans-serif; font-size: 0.85rem; font-weight: 500;
  text-decoration: none; border-radius: 100px;
  box-shadow: 0 10px 24px rgba(15,23,42,0.22);
  transition: transform 0.2s var(--ease), box-shadow 0.2s var(--ease);
}
.btn-primary:hover { transform: translateY(4px); box-shadow: none; }
.btn-ghost {
  display: inline-flex; align-items: center; gap: 0.5rem; padding: 0.8rem 1.8rem;
  background: transparent; color: var(--text);
  font-family: 'Onest', sans-serif; font-size: 0.85rem; font-weight: 500;
  text-decoration: none; border-radius: 100px;
  border: 1px solid var(--border);
  transition: border-color 0.3s var(--ease), transform 0.2s var(--ease);
}
.btn-ghost:hover { border-color: var(--text3); transform: translateY(2px); }

/* sections */
section { padding: 7rem 4rem; position: relative; z-index: 2; }
.section-eyebrow { font-size: 0.72rem; letter-spacing: 0.18em; text-transform: uppercase; color: var(--accent); margin-bottom: 0.9rem; font-weight: 600; }
.section-heading {
  font-weight: 500; letter-spacing: -0.03em; line-height: 1.05;
  font-size: clamp(2rem, 4vw, 3.2rem);
  color: var(--text); margin-bottom: 2rem;
}
.section-heading em { font-style: normal; color: var(--text3); }
.section-header { margin-bottom: 3.5rem; }

#projects .section-eyebrow { color: var(--accent-dark); }
#projects .section-heading { color: var(--dark-text); }
#projects .section-heading em { color: var(--dark-muted); }

/* about */
#about { border-top: 1px solid var(--border); border-bottom: 1px solid var(--border); }
.about-layout { display: grid; grid-template-columns: 300px 1fr; gap: 5rem; max-width: 1100px; margin: 0 auto; align-items: start; }

.about-photo-card { display: flex; flex-direction: column; gap: 1rem; position: sticky; top: 140px; }
.about-photo-frame { position: relative; border-radius: var(--radius-lg); overflow: hidden; border: 1px solid var(--border); aspect-ratio: 4 / 5; }
.about-photo-img { width: 100%; height: 100%; object-fit: cover; display: block; }
.about-photo-socials {
  position: absolute; left: 0; right: 0; bottom: 0;
  display: flex; justify-content: center; gap: 0.6rem; padding: 1.1rem 0.8rem;
  background: linear-gradient(to top, rgba(15,23,42,0.55), transparent);
}
.about-photo-socials a {
  width: 32px; height: 32px; border-radius: 50%;
  background: #fff; color: var(--text);
  display: flex; align-items: center; justify-content: center;
  transition: transform 0.2s var(--ease);
}
.about-photo-socials a:hover { transform: translateY(-2px); }
.about-photo-caption { text-align: center; }
.about-photo-name { font-weight: 600; font-size: 0.95rem; color: var(--text); }
.about-photo-role { font-size: 0.8rem; color: var(--text3); margin-top: 0.15rem; }

.about-heading { margin-bottom: 2rem; }
.about-heading-label { font-size: 0.72rem; letter-spacing: 0.18em; text-transform: uppercase; color: var(--accent); margin-bottom: 0.6rem; font-weight: 600; }
.about-heading-name { font-weight: 500; letter-spacing: -0.03em; line-height: 1.02; font-size: clamp(2rem, 4vw, 3rem); color: var(--text); }
.about-text { color: var(--text2); font-size: 0.95rem; line-height: 1.85; margin-bottom: 1.2rem; }
.toolkit-header { margin-top: 5rem; }

/* experience */
.experience-list {
  display: flex; flex-direction: column;
  max-width: 800px; margin: 0 auto;
  border-top: 1px solid var(--border);
}
.experience-item {
  display: grid; grid-template-columns: 160px 1fr; gap: 2rem;
  padding: 1.8rem 0; border-bottom: 1px solid var(--border);
}
.experience-dates { font-size: 0.8rem; color: var(--text3); letter-spacing: -0.01em; padding-top: 0.2rem; }
.experience-role { font-weight: 600; font-size: 1.05rem; color: var(--text); letter-spacing: -0.01em; }
.experience-company { font-size: 0.9rem; color: var(--text2); margin-top: 0.2rem; }
.experience-type { color: var(--muted); font-weight: 400; }
.experience-desc { font-size: 0.88rem; color: var(--text3); line-height: 1.7; margin-top: 0.6rem; }

/* toolkit — static categorized groups */
.tools-grid {
  display: grid; grid-template-columns: repeat(4, 1fr); gap: 2.5rem;
  max-width: 1200px; margin: 3rem auto 0;
  padding-top: 3rem; border-top: 1px solid var(--border);
}
.tools-category-name {
  font-weight: 600; font-size: 0.85rem; letter-spacing: -0.01em;
  color: var(--text); margin-bottom: 1rem;
}
.tools-list { display: flex; flex-direction: column; align-items: flex-start; gap: 0.6rem; }
.skill-pill {
  display: flex; align-items: center; gap: 0.6rem;
  background: var(--bg);
  border: 1px solid var(--border); border-radius: 100px;
  padding: 0.5rem 1.1rem 0.5rem 0.7rem; font-size: 0.8rem; font-weight: 500; color: var(--text2);
  transition: all 0.2s var(--ease);
}
.skill-pill img { width: 18px; height: 18px; object-fit: contain; flex-shrink: 0; }
.skill-pill:hover { border-color: var(--text3); transform: translateY(-2px); }