/* ── Reset & base ── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

:root {
  --green-dark:  #1b3629;
  --green-mid:   #245238;
  --green-teal:  #3eb489;
  --page-bg:     #eef1ee;
  --card-bg:     #ffffff;
  --text-dark:   #1c2b22;
  --text-mid:    #4a6358;
  --text-muted:  #7a9486;
  --border:      #d6e0da;
  --shadow:      0 2px 10px rgba(27,54,41,0.08);
  --shadow-lg:   0 4px 24px rgba(27,54,41,0.12);
  --radius:      10px;
  --max-w:       820px;
}

html { scroll-behavior: smooth; }

body {
  font-family: 'Inter', sans-serif;
  font-size: 15px;
  line-height: 1.7;
  color: var(--text-dark);
  background: var(--page-bg);
}

a { color: var(--green-teal); text-decoration: none; }
a:hover { text-decoration: underline; }

/* ── Nav ── */
.nav {
  position: sticky;
  top: 0;
  z-index: 100;
  background: var(--green-dark);
  display: flex;
  justify-content: center;
  gap: 0.25rem;
  padding: 0 1rem;
  box-shadow: 0 2px 8px rgba(0,0,0,0.25);
}

.nav a {
  color: rgba(255,255,255,0.7);
  font-size: 0.82rem;
  font-weight: 500;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  padding: 0.85rem 1rem;
  border-bottom: 2px solid transparent;
  transition: color 0.15s, border-color 0.15s;
}
.nav a:hover {
  color: #fff;
  border-bottom-color: var(--green-teal);
  text-decoration: none;
}

/* ── Hero ── */
.hero {
  background: var(--green-dark);
  padding: 3.5rem 1.5rem 2.5rem;
  text-align: center;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 1.75rem;
}

.hero-inner {
  display: flex;
  align-items: center;
  gap: 2rem;
}

.hero-photo {
  width: 110px;
  height: 110px;
  object-fit: cover;
  border-radius: 50%;
  border: 3px solid var(--green-teal);
  box-shadow: 0 0 0 5px rgba(62,180,137,0.18);
  flex-shrink: 0;
}

.hero-text { text-align: left; }

.hero-name {
  font-size: 2.2rem;
  font-weight: 700;
  color: #fff;
  line-height: 1.1;
}

.hero-title {
  font-size: 1.05rem;
  font-weight: 400;
  color: var(--green-teal);
  margin-top: 0.35rem;
}

.hero-tagline {
  font-size: 0.88rem;
  color: rgba(255,255,255,0.45);
  margin-top: 0.2rem;
  letter-spacing: 0.04em;
}

.hero-links {
  display: flex;
  flex-wrap: wrap;
  gap: 0.6rem;
  justify-content: center;
}

.hero-chip {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0.4rem 1rem;
  border-radius: 999px;
  font-size: 0.82rem;
  font-weight: 500;
  background: rgba(255,255,255,0.08);
  border: 1px solid rgba(255,255,255,0.15);
  color: rgba(255,255,255,0.85);
  transition: background 0.15s, border-color 0.15s;
}
a.hero-chip:hover {
  background: rgba(62,180,137,0.2);
  border-color: var(--green-teal);
  text-decoration: none;
  color: #fff;
}
.hero-chip--plain { cursor: default; }

/* ── Page body ── */
.page-body {
  max-width: calc(var(--max-w) + 3rem);
  margin: 0 auto;
  padding: 2.5rem 1.5rem 4rem;
  display: flex;
  flex-direction: column;
  gap: 2rem;
}

/* ── Card (shared container) ── */
.card {
  background: var(--card-bg);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  overflow: hidden;
}

.card-header {
  padding: 1.1rem 1.6rem;
  background: var(--green-dark);
  display: flex;
  align-items: center;
  gap: 0.6rem;
}

.card-title {
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--green-teal);
}

.card-body {
  padding: 1.4rem 1.6rem;
}

/* ── Experience entries ── */
.entry {
  padding: 1.25rem 0;
  border-bottom: 1px solid var(--border);
}
.entry:first-child { padding-top: 0; }
.entry:last-child { border-bottom: none; padding-bottom: 0; }

.entry-header {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 1rem;
  margin-bottom: 0.6rem;
  flex-wrap: wrap;
}

.entry-role {
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--text-dark);
}

.entry-org {
  font-size: 0.85rem;
  color: var(--green-teal);
  font-weight: 500;
  margin-top: 0.1rem;
}

.entry-date {
  font-size: 0.78rem;
  color: var(--text-muted);
  white-space: nowrap;
  padding-top: 0.15rem;
  font-variant-numeric: tabular-nums;
}

.entry ul {
  padding-left: 1.15rem;
  display: flex;
  flex-direction: column;
  gap: 0.3rem;
}
.entry ul li {
  font-size: 0.88rem;
  color: var(--text-mid);
}

/* ── Projects ── */
.projects-section > .card-header {
  border-radius: var(--radius) var(--radius) 0 0;
}
.projects-section > .project-grid {
  padding-top: 1.25rem;
}

.project-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
  gap: 1.25rem;
}

.project-card {
  background: var(--card-bg);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  overflow: hidden;
  display: flex;
  flex-direction: column;
}

.project-head {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 1rem 1.25rem 0.75rem;
  border-bottom: 1px solid var(--border);
}

.project-name {
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--text-dark);
}

.project-link {
  font-size: 0.78rem;
  font-weight: 600;
  color: var(--green-teal);
  border: 1px solid var(--green-teal);
  padding: 0.2rem 0.65rem;
  border-radius: 4px;
  letter-spacing: 0.03em;
  transition: background 0.15s, color 0.15s;
  flex-shrink: 0;
}
.project-link:hover {
  background: var(--green-teal);
  color: #fff;
  text-decoration: none;
}

.project-img {
  width: 100%;
  display: block;
  border-bottom: 1px solid var(--border);
}

.project-body {
  padding: 0.9rem 1.25rem 1.1rem;
  flex: 1;
}
.project-body ul {
  padding-left: 1.1rem;
  display: flex;
  flex-direction: column;
  gap: 0.3rem;
}
.project-body ul li {
  font-size: 0.87rem;
  color: var(--text-mid);
}

/* ── Education ── */
.coursework {
  display: flex;
  flex-wrap: wrap;
  gap: 0.45rem;
  margin-top: 0.75rem;
}
.coursework span {
  background: var(--page-bg);
  border: 1px solid var(--border);
  color: var(--text-mid);
  padding: 0.22rem 0.65rem;
  border-radius: 5px;
  font-size: 0.8rem;
}

.certs {
  margin-top: 1.25rem;
  padding-top: 1.25rem;
  border-top: 1px solid var(--border);
}
.certs-label {
  font-size: 0.72rem;
  font-weight: 700;
  letter-spacing: 0.09em;
  text-transform: uppercase;
  color: var(--text-muted);
  margin-bottom: 0.65rem;
}
.cert-list {
  display: flex;
  flex-wrap: wrap;
  gap: 0.6rem;
}
.cert-badge {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  border: 1.5px solid var(--green-teal);
  color: var(--green-dark);
  padding: 0.35rem 0.9rem;
  border-radius: 6px;
  font-size: 0.83rem;
  font-weight: 500;
}
.cert-badge::before {
  content: "✓";
  color: var(--green-teal);
  font-weight: 700;
}

/* ── Skills ── */
.skills-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(210px, 1fr));
  gap: 1.25rem;
}

.skill-group { }

.skill-group-title {
  font-size: 0.72rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.09em;
  color: var(--text-muted);
  margin-bottom: 0.55rem;
}

.skill-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.35rem;
}
.skill-tags span {
  background: var(--page-bg);
  border: 1px solid var(--border);
  color: var(--text-dark);
  padding: 0.2rem 0.6rem;
  border-radius: 5px;
  font-size: 0.8rem;
}

/* ── Footer ── */
.footer {
  text-align: center;
  padding: 2rem 1rem;
  font-size: 0.8rem;
  color: var(--text-muted);
}

/* ── Responsive ── */
@media (max-width: 600px) {
  .hero-inner {
    flex-direction: column;
    text-align: center;
  }
  .hero-text { text-align: center; }
  .nav { justify-content: flex-start; overflow-x: auto; }
  .nav a { padding: 0.85rem 0.65rem; white-space: nowrap; }
  .project-grid { grid-template-columns: 1fr; }
  .skills-grid { grid-template-columns: 1fr 1fr; }
  .card-body { padding: 1.1rem 1.1rem; }
}