:root {
  --bg: #fcf6f5;
  --accent: #2bae66;
  --accent-dark: #228852;
  --text-main: #111827;
  --text-muted: #6b7280;
  --card-bg: #ffffff;
  --border-subtle: rgba(17, 24, 39, 0.06);
  --shadow-soft: 0 18px 45px rgba(15, 23, 42, 0.12);
  --radius-xl: 24px;
  --radius-lg: 18px;
  --radius-md: 12px;
  --radius-pill: 999px;
  --font-heading: "Space Grotesk", system-ui, -apple-system, BlinkMacSystemFont,
    "Segoe UI", sans-serif;
  --font-body: "Poppins", system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI",
    sans-serif;
}

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

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: var(--font-body);
  background-color: var(--bg);
  color: var(--text-main);
  -webkit-font-smoothing: antialiased;
}

p {
  text-align: justify;
}

img {
  max-width: 100%;
  display: block;
}

a {
  color: inherit;
  text-decoration: none;
}

.container {
  width: 100%;
  max-width: 1120px;
  margin: 0 auto;
  padding: 0 1.5rem;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  backdrop-filter: blur(18px);
  background: linear-gradient(
    to bottom,
    rgba(252, 246, 245, 0.9),
    rgba(252, 246, 245, 0.6),
    transparent
  );
  border-bottom: 1px solid rgba(148, 163, 184, 0.2);
}

.nav-container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0.85rem 1.5rem;
  gap: 1.5rem;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 0.9rem;
}

.brand-mark {
  width: 40px;
  height: 40px;
  border-radius: 40%;
  background: radial-gradient(circle at 30% 20%, #ffffff, #2bae66);
  box-shadow: 0 12px 30px rgba(43, 174, 102, 0.45);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  letter-spacing: 0.06em;
  color: #ffffff;
}

.brand-text {
  display: flex;
  flex-direction: column;
}

.brand-name {
  font-weight: 600;
  font-size: 0.95rem;
}

.brand-role {
  font-size: 0.8rem;
  color: var(--text-muted);
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 1.4rem;
  font-size: 0.9rem;
}

/* mobile hamburger toggle button (hidden by default) */
.nav-toggle {
  display: none;
  background: none;
  border: none;
  font-size: 1.4rem;
  color: var(--text-main);
  cursor: pointer;
}

/* when navigation is open on mobile, show as vertical list */
.nav-links.open {
  display: flex;
  flex-direction: column;
  position: absolute;
  top: 100%;
  right: 0;
  background: var(--bg);
  width: 200px;
  padding: 1rem;
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
}

/* mobile hamburger toggle button (hidden by default) */
.nav-toggle {
  display: none;
  background: none;
  border: none;
  font-size: 1.4rem;
  color: var(--text-main);
  cursor: pointer;
}

/* when navigation is open on mobile, show as vertical list */
.nav-links.open {
  display: flex;
  flex-direction: column;
  position: absolute;
  top: 100%;
  right: 0;
  background: var(--bg);
  width: 200px;
  padding: 1rem;
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.1);
}

.nav-links a {
  position: relative;
  padding-bottom: 0.2rem;
  color: var(--text-muted);
  transition: color 0.2s ease;
}

.nav-links a::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: 0;
  width: 0;
  height: 2px;
  border-radius: 999px;
  background: linear-gradient(90deg, #2bae66, #228852);
  transition: width 0.2s ease;
}

.nav-links a:hover {
  color: var(--text-main);
}

.nav-links a:hover::after {
  width: 100%;
}

.hero {
  padding: 4.5rem 0 3.5rem;
  position: relative;
  overflow: hidden;
}

/* subtle data/technology animation layer */
.hero-data-bg {
  position: absolute;
  inset: 0;
  background: radial-gradient(circle, rgba(43,174,102,0.4) 1px, transparent 1px) 0 0/18px 18px;
  opacity: 0.12;
  pointer-events: none;
  animation: moveData 60s linear infinite;
}

@keyframes moveData {
  from { background-position: 0 0; }
  to { background-position: 180px 0; }
}

.hero::before {
  content: "";
  position: absolute;
  inset: -140px -220px auto auto;
  width: 520px;
  height: 520px;
  background:
    radial-gradient(circle at 20% 20%, rgba(255, 255, 255, 0.95), transparent 55%),
    radial-gradient(circle at 70% 40%, rgba(43, 174, 102, 0.35), transparent 65%);
  opacity: 0.9;
  pointer-events: none;
  filter: blur(0.2px);
}

.hero::after {
  content: "";
  position: absolute;
  right: -160px;
  top: 40px;
  width: 420px;
  height: 320px;
  background-image: radial-gradient(circle, rgba(15, 23, 42, 0.12) 1px, transparent 1px);
  background-size: 26px 26px;
  opacity: 0.25;
  mask-image: radial-gradient(circle at 30% 0%, black 0%, transparent 70%);
  -webkit-mask-image: radial-gradient(circle at 30% 0%, black 0%, transparent 70%);
  pointer-events: none;
}

.hero-layout {
  display: grid;
  grid-template-columns: minmax(0, 1fr);
  gap: 3rem;
  align-items: center;
}

.hero-main {
  display: flex;
  flex-direction: column;
  gap: 1.8rem;
}

.eyebrow {
  font-size: 0.9rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  font-weight: 500;
  color: var(--accent-dark);
  font-family: var(--font-heading);
}

h1 {
  font-family: var(--font-heading);
  font-size: clamp(2.4rem, 4vw, 3rem);
  line-height: 1.1;
  margin: 0;
}

.highlight {
  position: relative;
  white-space: nowrap;
  background-image: linear-gradient(120deg, #2bae66, #15803d);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.hero-subtitle {
  margin: 0;
  color: var(--text-muted);
  font-size: 0.98rem;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.85rem;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.65rem 1.4rem;
  border-radius: var(--radius-pill);
  border: 1px solid transparent;
  font-size: 0.9rem;
  font-weight: 500;
  cursor: pointer;
  transition: transform 0.12s ease, box-shadow 0.12s ease,
    background-color 0.12s ease, color 0.12s ease, border-color 0.12s ease;
}

.btn-primary {
  background: linear-gradient(135deg, #2bae66, #228852);
  color: #ffffff;
  box-shadow: 0 14px 32px rgba(43, 174, 102, 0.5);
}

.btn-primary:hover {
  transform: translateY(-1px);
  box-shadow: 0 18px 40px rgba(43, 174, 102, 0.55);
}

.btn-ghost {
  background: rgba(255, 255, 255, 0.8);
  border-color: rgba(148, 163, 184, 0.5);
  color: var(--text-main);
}

.btn-ghost:hover {
  background: #ffffff;
  border-color: transparent;
  box-shadow: 0 10px 28px rgba(15, 23, 42, 0.14);
}

.hero-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 0.6rem;
  font-size: 0.8rem;
  color: var(--text-muted);
}

.hero-meta span {
  padding: 0.35rem 0.8rem;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.7);
  border: 1px solid rgba(209, 213, 219, 0.7);
}


.hero-aside {
  align-self: stretch;
}

.profile-card {
  height: 100%;
  background: radial-gradient(circle at 0% 0%, #ffffff, #fcf6f5);
  border-radius: var(--radius-xl);
  padding: 1.8rem 1.7rem;
  box-shadow: var(--shadow-soft);
  border: 1px solid rgba(148, 163, 184, 0.35);
  display: flex;
  flex-direction: column;
  gap: 1.6rem;
  position: relative;
  overflow: hidden;
  transition: transform 0.18s ease, box-shadow 0.18s ease, border-color 0.18s ease;
}

.profile-card::before {
  content: "";
  position: absolute;
  inset: -20%;
  background: radial-gradient(
    circle at 10% 0%,
    rgba(43, 174, 102, 0.18),
    transparent 50%
  );
  opacity: 0.8;
  pointer-events: none;
}

.profile-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 26px 60px rgba(15, 23, 42, 0.22);
  border-color: rgba(148, 163, 184, 0.75);
}

.profile-header {
  display: flex;
  align-items: center;
  gap: 1.2rem;
}

.profile-photo {
  width: 86px;
  height: 86px;
  border-radius: 999px;
  overflow: hidden;
  flex-shrink: 0;
  border: 3px solid rgba(255, 255, 255, 0.9);
  box-shadow: 0 18px 42px rgba(15, 23, 42, 0.35);
  background: #e5e7eb;
}

.profile-photo img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}

.avatar-placeholder {
  width: 72px;
  height: 72px;
  border-radius: 26px;
  background: linear-gradient(145deg, #2bae66, #ffffff);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  color: #ffffff;
  font-size: 1.2rem;
  box-shadow: 0 16px 40px rgba(43, 174, 102, 0.7);
}

.profile-text h2 {
  margin: 0 0 0.35rem;
  font-size: 1.1rem;
}

.profile-text p {
  margin: 0;
  font-size: 0.9rem;
  color: var(--text-muted);
}

.profile-list {
  margin: 0;
  display: grid;
  gap: 0.9rem;
}

.profile-list div {
  display: grid;
  gap: 0.1rem;
}

.profile-list dt {
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.14em;
  color: var(--text-muted);
}

.profile-list dd {
  margin: 0;
  font-size: 0.9rem;
}

.section {
  padding: 3.5rem 0;
}

.reveal {
  opacity: 0;
  transform: translateY(26px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

.reveal.visible {
  opacity: 1;
  transform: translateY(0);
}

.reveal-delay-1 {
  transition-delay: 0.12s;
}

.reveal-delay-2 {
  transition-delay: 0.24s;
}

.section-alt {
  background: rgba(255, 255, 255, 0.7);
}

.section h2 {
  font-size: 1.5rem;
  margin: 0 0 1.6rem;
}

.two-column {
  display: grid;
  grid-template-columns: minmax(0, 3fr) minmax(0, 2.2fr);
  gap: 2.5rem;
  align-items: center;
}

.two-column p {
  font-size: 0.96rem;
  color: var(--text-muted);
}

.two-column p + p {
  margin-top: 0.7rem;
}

.about-photo-wrap {
  display: flex;
  justify-content: flex-end;
  align-items: center;
}

.about-photo {
  width: 190px;
  height: 190px;
  border-radius: 50%;
  overflow: hidden;
  box-shadow: 0 26px 60px rgba(15, 23, 42, 0.35);
  border: 4px solid #ffffff;
  background: #e5e7eb;
}

.about-photo img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  display: block;
}

.key-facts {
  background: var(--card-bg);
  border-radius: var(--radius-lg);
  padding: 1.4rem 1.5rem;
  box-shadow: 0 14px 34px rgba(15, 23, 42, 0.1);
  border: 1px solid rgba(226, 232, 240, 0.9);
}

.key-facts h3 {
  margin: 0 0 0.9rem;
  font-size: 1rem;
}

.key-facts ul {
  list-style: none;
  padding: 0;
  margin: 0;
  display: grid;
  gap: 0.5rem;
  font-size: 0.9rem;
}

.key-facts li span {
  font-weight: 500;
  color: var(--text-main);
}

.skills-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 1.4rem;
}

.skill-card {
  background: var(--card-bg);
  border-radius: var(--radius-lg);
  padding: 1.1rem 1.1rem 1.2rem;
  border: 1px solid var(--border-subtle);
  box-shadow: 0 12px 28px rgba(15, 23, 42, 0.08);
  transition: transform 0.18s ease, box-shadow 0.18s ease, border-color 0.18s ease;
}

.skill-card h3 {
  font-size: 0.98rem;
  margin: 0 0 0.7rem;
}

.skill-card:hover {
  transform: translateY(-3px);
  box-shadow: 0 20px 40px rgba(15, 23, 42, 0.16);
  border-color: rgba(148, 163, 184, 0.8);
}

.tag-list {
  list-style: none;
  padding: 0;
  margin: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 0.45rem;
}

.tag-list li {
  font-size: 0.78rem;
  padding: 0.32rem 0.65rem;
  border-radius: var(--radius-pill);
  background: rgba(43, 174, 102, 0.06);
  color: #065f46;
}

.timeline {
  display: grid;
  gap: 0 rem;
  position: relative;
}

.timeline::before {
  content: "";
  position: absolute;
  left: 0.3rem;
  top: 0.4rem;
  bottom: 0.4rem;
  width: 2px;
  border-radius: 999px;
  background: linear-gradient(to bottom, #2bae66, rgba(43, 174, 102, 0));
}

.timeline-item {
  display: grid;
  grid-template-columns: auto minmax(0, 1fr);
  gap: 0.1rem 1.8rem;
  padding-left: 1.5rem;
}

.timeline-meta {
  font-size: 0.8rem;
  color: var(--text-muted);
  min-width: 170px;
  position: relative;
  transition: color 0.18s ease;
}

.timeline-meta:hover {
  color: var(--text-main);
}

.timeline-meta-logo {
  margin-bottom: 0.35rem;
}

.timeline-meta-logo img {
  width: 28px;
  height: 28px;
  object-fit: contain;
  display: block;
}

.timeline-meta::before {
  content: "";
  position: absolute;
  left: -1.55rem;
  top: 0.15rem;
  width: 11px;
  height: 11px;
  border-radius: 999px;
  border: 2px solid #ffffff;
  background: #2bae66;
  box-shadow: 0 0 0 6px rgba(43, 174, 102, 0.25);
}

.timeline-period {
  display: block;
  font-weight: 500;
}

.timeline-location {
  display: block;
  margin-top: 0.15rem;
}

.timeline-content h3 {
  margin: 0 0 0.4rem;
  font-size: 1.02rem;
  transition: color 0.18s ease;
}

.timeline-content ul {
  margin: 0.2rem 0 0;
  padding-left: 1.1rem;
  color: var(--text-muted);
  font-size: 0.93rem;
}

.timeline-content li + li {
  margin-top: 0.3rem;
}

.section-header {
  width: 100%;
}

.section-header p {
  margin: 0.25rem 0 0;
  color: var(--text-muted);
  font-size: 0.95rem;
  text-align: justify;
}

.projects-grid {
  margin-top: 2rem;
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1.5rem;
}

.project-card {
  background: var(--card-bg);
  border-radius: var(--radius-lg);
  padding: 1.2rem 1.3rem 1.3rem;
  border: 1px solid var(--border-subtle);
  box-shadow: 0 14px 34px rgba(15, 23, 42, 0.12);
  transition: transform 0.18s ease, box-shadow 0.18s ease, border-color 0.18s ease;
}

.project-card h3 {
  font-size: 1.02rem;
  margin: 0 0 0.5rem;
}

.project-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 26px 52px rgba(15, 23, 42, 0.22);
  border-color: rgba(148, 163, 184, 0.9);
}

.project-card p {
  margin: 0.25rem 0;
  font-size: 0.92rem;
  color: var(--text-muted);
  text-align: justify;
}

.project-tech {
  margin-top: 0.8rem;
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
  align-items: flex-start;
  font-size: 0.8rem;
}

.project-card {
  /* no special positioning required now; normal flow used */
}

.project-links {
  margin-top: 0.8rem;
  /* ensure the link sits below the tech tags and doesn't overlap content */
}

.project-links a {
  color: var(--text);
  font-size: 0.9rem;
  display: inline-flex;
  align-items: center;
  gap: 0.3rem;
  padding: 0.3rem 0.6rem;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border-subtle);
  background: var(--card-bg);
  transition: background 0.18s ease, color 0.18s ease;
}

.project-links a:hover {
  background: var(--accent);
  color: #fff;
}


.tech-label {
  text-transform: uppercase;
  letter-spacing: 0.16em;
  font-weight: 600;
  color: #065f46;
  padding: 0.24rem 0.7rem;
  border-radius: 999px;
  border: 1px solid rgba(148, 163, 184, 0.7);
  background: rgba(255, 255, 255, 0.9);
}

.tech-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.35rem;
}

.tech-tags span {
  padding: 0.22rem 0.65rem;
  border-radius: 999px;
  background: linear-gradient(135deg, rgba(43, 174, 102, 0.1), rgba(43, 174, 102, 0.24));
  color: #064e3b;
  border: 1px solid rgba(148, 163, 184, 0.6);
  font-size: 0.78rem;
}

.projects-footer {
  margin-top: 2rem;
  display: flex;
  flex-wrap: wrap;
  gap: 1.2rem;
}

.text-link {
  font-size: 0.9rem;
  color: #065f46;
  display: inline-flex;
  align-items: center;
  gap: 0.25rem;
  position: relative;
}

.text-link::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: -0.1rem;
  width: 0;
  height: 1px;
  background: #065f46;
  transition: width 0.18s ease;
}

.text-link:hover::after {
  width: 100%;
}

.cert-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 1.3rem;
}

.cert-card {
  background: var(--card-bg);
  border-radius: var(--radius-md);
  padding: 1rem 1rem 1.1rem;
  border: 1px dashed rgba(148, 163, 184, 0.6);
  transition: transform 0.18s ease, box-shadow 0.18s ease, border-color 0.18s ease,
    background-color 0.18s ease;
}

.cert-card a {
  display: block;
  color: inherit;
  text-decoration: none;
  transition: color 0.16s ease, background 0.16s ease;
}


.cert-card h3 {
  font-size: 0.95rem;
  margin: 0 0 0.35rem;
}

.cert-card p {
  margin: 0;
  font-size: 0.85rem;
  color: var(--text-muted);
}

.cert-card:hover {
  transform: translateY(-3px);
  box-shadow: 0 18px 36px rgba(15, 23, 42, 0.16);
  border-color: rgba(148, 163, 184, 0.9);
  background-color: #ffffff;
}

.edu-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1.4rem;
}

.edu-card {
  background: var(--card-bg);
  border-radius: var(--radius-lg);
  padding: 1.1rem 1.2rem 1.2rem;
  border: 1px solid var(--border-subtle);
  box-shadow: 0 12px 28px rgba(15, 23, 42, 0.08);
  transition: transform 0.18s ease, box-shadow 0.18s ease, border-color 0.18s ease;
}

.edu-logo {
  margin-bottom: 0.4rem;
}

.edu-logo img {
  width: 40px;
  height: 40px;
  object-fit: contain;
  display: block;
}

.edu-card h3 {
  margin: 0 0 0.4rem;
  font-size: 1.02rem;
}

.edu-card:hover {
  transform: translateY(-3px);
  box-shadow: 0 20px 40px rgba(15, 23, 42, 0.18);
  border-color: rgba(148, 163, 184, 0.9);
}

.edu-meta {
  margin: 0;
  font-size: 0.9rem;
  color: var(--text-muted);
}

.edu-detail {
  margin: 0.4rem 0 0;
  font-size: 0.9rem;
  color: var(--text-muted);
}

.contact-section {
  padding-bottom: 4rem;
}

.contact-layout {
  display: grid;
  grid-template-columns: minmax(0, 3fr) minmax(0, 2.5fr);
  gap: 2.3rem;
  align-items: start;
}

.contact-layout h2 {
  margin-bottom: 0.7rem;
}

.contact-layout p {
  font-size: 0.95rem;
  color: var(--text-muted);
}

.contact-details {
  margin-top: 1.4rem;
  display: grid;
  gap: 0.8rem;
  font-size: 0.9rem;
}

.label {
  display: block;
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.16em;
  color: var(--text-muted);
  margin-bottom: 0.1rem;
}

.contact-details a {
  color: #065f46;
}

.contact-links {
  display: flex;
  flex-wrap: wrap;
  gap: 0.7rem;
  margin-top: 0.2rem;
}

.contact-links a {
  font-size: 0.86rem;
  padding: 0.25rem 0.75rem;
  border-radius: var(--radius-pill);
  background: rgba(43, 174, 102, 0.07);
}

.social-bar {
  position: fixed;
  top: 50%;
  left: 1.5rem;
  transform: translateY(-50%);
  display: flex;
  flex-direction: column;
  gap: 0.45rem;
  z-index: 30;
}

.social-item {
  width: 42px;
  height: 42px;
  border-radius: 16px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: #ffffff;
  box-shadow: 0 12px 28px rgba(15, 23, 42, 0.7);
  transition: transform 0.12s ease, box-shadow 0.12s ease, filter 0.12s ease;
}

.social-item i {
  font-size: 1.1rem;
}

.social-item:hover {
  transform: translateX(2px);
  filter: brightness(1.05);
  box-shadow: 0 16px 36px rgba(15, 23, 42, 0.8);
}

.social-github {
  background: #111827;
}

.social-linkedin {
  background: #0a66c2;
}

.social-medium {
  background: #000000;
}

.social-email {
  background: #ea4335;
}

.contact-form {
  background: var(--card-bg);
  border-radius: var(--radius-lg);
  padding: 1.5rem 1.5rem 1.7rem;
  box-shadow: 0 16px 38px rgba(15, 23, 42, 0.16);
  border: 1px solid rgba(209, 213, 219, 0.8);
}

.form-row {
  display: grid;
  gap: 0.25rem;
  margin-bottom: 0.9rem;
}

.form-row label {
  font-size: 0.8rem;
  font-weight: 500;
}

.form-row input,
.form-row textarea {
  border-radius: 12px;
  border: 1.5px solid rgba(148, 163, 184, 0.5);
  padding: 0.75rem 1rem;
  font-family: inherit;
  font-size: 0.88rem;
  outline: none;
  background: rgba(255, 255, 255, 0.98);
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.04);
  transition: border-color 0.16s ease, box-shadow 0.16s ease, background 0.16s ease;
}

.form-status {
  margin-top: 0.6rem;
  font-size: 0.9rem;
  color: var(--text-main);
}
  background: rgba(255, 255, 255, 0.95);
}

.form-row textarea {
  border-radius: 12px;
  resize: vertical;
  min-height: 120px;
}

.form-row input:focus,
.form-row textarea:focus {
  border-color: #2bae66;
  box-shadow: 0 0 0 2px rgba(43, 174, 102, 0.15), 0 4px 12px rgba(43, 174, 102, 0.2);
  background: #ffffff;
}

.site-footer {
  border-top: 1px solid rgba(148, 163, 184, 0.3);
  padding: 1.5rem 0 1.75rem;
  font-size: 0.85rem;
  color: var(--text-muted);
}

.footer-layout {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 1rem;
  flex-wrap: wrap;
}

.footer-note {
  margin: 0;
}

@media (max-width: 960px) {
  .hero-layout {
    grid-template-columns: minmax(0, 1fr);
    gap: 2.4rem;
  }

  .social-bar {
    left: 1rem;
  }

  .skills-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .projects-grid {
    grid-template-columns: minmax(0, 1fr);
  }

  .cert-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .edu-grid {
    grid-template-columns: minmax(0, 1fr);
  }

  .contact-layout {
    grid-template-columns: minmax(0, 1fr);
  }
}

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

  .nav-links {
    display: none;
  }

  .nav-links.open {
    display: flex;
    /* slide-in panel */
    position: fixed;
    top: 0;
    right: 0;
    width: 80%;
    max-width: 300px;
    height: 100vh;
    background: var(--bg);
    padding: 2rem 1rem;
    flex-direction: column;
    gap: 1.2rem;
    box-shadow: -2px 0 20px rgba(0,0,0,0.1);
    z-index: 30;
  }

  body.menu-open {
    overflow: hidden;
  }

  .nav-links.open a {
    padding: 0.8rem 0;
  }

  .social-bar {
    display: none;
  }

  .hero {
    padding-top: 3.2rem;
  }

  /* reposition about photo on mobile: float on left with text wrap */
  .about-photo-wrap {
    justify-content: flex-start;
    margin-top: 0;
    order: 0;
    float: left;
    margin: 0 1rem 1rem 0;
  }

  .two-column {
    display: block;
  }

  /* optionally hide profile image on small screens */
  .about-photo-wrap {
    display: none;
  }

  .about-photo {
    width: 140px;
    height: 140px;
  }

  /* timeline layout for smaller screens */
  .timeline {
    display: flex;
    flex-direction: column;
    gap: 1.8rem;
  }

  .timeline::before {
    display: none;
  }

  .timeline-item {
    display: block;
    padding-left: 0;
  }

  .timeline-meta {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 0.8rem;
    min-width: auto;
    margin-bottom: 0.5rem;
  }

  /* ensure period and location sit at opposite ends */
  .timeline-period {
    flex: 1;
  }

  .timeline-location {
    flex: 1;
    text-align: right;
  }

  .timeline-meta::before {
    display: none;
  }

  .timeline-meta-logo img {
    width: 36px;
    height: 36px;
  }

  .timeline-content {
    padding-left: 0;
  }

  .hero-layout {
    grid-template-columns: minmax(0, 1fr);
  }

  .profile-card {
    order: -1;
  }

  .two-column {
    grid-template-columns: minmax(0, 1fr);
  }

  .skills-grid {
    grid-template-columns: minmax(0, 1fr);
  }

  .projects-footer {
    flex-direction: column;
  }

  .cert-grid {
    grid-template-columns: minmax(0, 1fr);
  }

  .nav-container {
    padding-inline: 1.1rem;
  }
}

@media (max-width: 520px) {
  .hero-meta {
    gap: 0.4rem;
  }

  .hero-meta span {
    width: 100%;
  }

  .container {
    padding-inline: 1.2rem;
  }

  h1 {
    font-size: 2.4rem;
  }

  .hero-subtitle {
    font-size: 1rem;
  }

  .hero-actions {
    flex-direction: column;
    align-items: stretch;
  }

  .btn {
    width: 100%;
    justify-content: center;
  }

  /* tighten timeline spacing on very small screens */
  .timeline {
    gap: 1.2rem;
  }
}