:root{
  --bg:#0b1220;
  --card:#111a2e;
  --text:#eaf0ff;
  --muted:#b9c4e2;
  --line:rgba(255,255,255,.12);
  --accent:#6ea8ff;
  --accent2:#a78bfa;
}

*{box-sizing:border-box}
body{
  margin:0;
  font-family: ui-sans-serif, system-ui, -apple-system, Segoe UI, Roboto, Helvetica, Arial;
  background: radial-gradient(900px 500px at 20% 0%, rgba(110,168,255,.18), transparent 60%),
              radial-gradient(800px 480px at 80% 0%, rgba(167,139,250,.14), transparent 55%),
              var(--bg);
  color:var(--text);
}
a{color:var(--text); text-decoration:none}
a:hover{opacity:.9}
.container{max-width:1100px; margin:0 auto; padding:24px; display:flex; flex-direction:column; gap:28px;}
.muted{color:var(--muted)}

.btn{
  display:inline-block;
  padding:10px 14px;
  border-radius:12px;
  font-weight:700;
  background: linear-gradient(90deg, var(--accent), var(--accent2));
  color:#081022;
}
.btn--small{padding:8px 12px; border-radius:10px; font-size:14px}

.nav{
  position:sticky; top:0; z-index:50;
  backdrop-filter: blur(10px);
  background: rgba(11,18,32,.7);
  border-bottom:1px solid var(--line);
}
.nav__inner{display:flex; align-items:center; justify-content:space-between; gap:14px}
.brand{display:flex; align-items:center; gap:10px; font-weight:800; letter-spacing:.2px}
.brand__dot{
  width:10px; height:10px; border-radius:999px;
  background: linear-gradient(90deg, var(--accent), var(--accent2));
}
.nav__toggle{
  display:none;
  border:1px solid var(--line);
  background: rgba(255,255,255,.04);
  color:var(--text);
  border-radius:10px;
  padding:8px 10px;
}
.nav__links{display:flex; align-items:center; gap:14px; flex-wrap:wrap}
.nav__links a{color:var(--muted); font-size:14px}
.nav__links a.btn{color:#081022}

.footer{
  border-top:1px solid var(--line);
  margin-top:36px;
  padding:18px 0;
  background: rgba(17,26,46,.35);
}
.footer__inner{display:flex; justify-content:space-between; gap:16px; flex-wrap:wrap}
.footer__title{font-weight:800; margin-bottom:8px}
.footer__links{display:flex; gap:14px; flex-wrap:wrap}
.footer__links a{color:var(--muted)}
.footer__links a:hover{color:var(--text)}

.card{
  border:1px solid var(--line);
  background: rgba(17,26,46,.55);
  border-radius:16px;
  padding:16px;
}

@media (max-width: 860px){
  .nav__toggle{display:inline-block}
  .nav__links{display:none; width:100%}
  .nav__links--open{display:flex; flex-direction:column; align-items:flex-start; padding:10px 0}
}
.section-title { margin: 0 0 10px; }
#homeSummary ul { margin: 10px 0 0; padding-left: 18px; color: var(--muted); }
#homeSummary li { margin: 8px 0; }

.grid{
  margin-top:16px;
  display:grid;
  grid-template-columns: repeat(3, 1fr);
  gap:14px;
}

@media (max-width: 900px){
  .grid{ grid-template-columns: 1fr; }
}

.project-card h3{ margin:0 0 8px; }
.project-stack{ color: var(--muted); font-size: 13px; margin: 0 0 10px; }
.project-links{ display:flex; gap:18px; margin-top:12px; flex-wrap:wrap; }
.project-links a{ color: var(--accent); }


.timeline{ margin-top:16px; display:flex; flex-direction:column; gap:14px; }
.timeline-item{
  display:grid;
  grid-template-columns: 12px 1fr;
  gap:12px;
  padding:16px;
  border:1px solid var(--line);
  border-radius:16px;
  background: rgba(17,26,46,.55);
}
.timeline-dot{
  width:10px; height:10px; border-radius:999px;
  background: linear-gradient(90deg, var(--accent), var(--accent2));
  margin-top:7px;
}
.timeline-title{ display:flex; flex-wrap:wrap; gap:8px; align-items:baseline; }
.timeline-title h3{ margin:0; }
.timeline-meta{ color: var(--muted); font-size: 13px; margin-top:6px; }
.timeline-item ul{ margin:10px 0 0; padding-left:18px; color: var(--muted); }
.timeline-item li{ margin:8px 0; }

.skills-wrap{ margin-top:16px; display:flex; flex-direction:column; gap:14px; }
.skill-group h2{ margin:0 0 10px; font-size:18px; }
.chips{ display:flex; flex-wrap:wrap; gap:10px; }
.chip{
  border:1px solid var(--line);
  padding:8px 10px;
  border-radius:999px;
  background: rgba(255,255,255,.04);
  color: var(--muted);
  font-size:13px;
}

.cert-list{ margin-top:16px; display:flex; flex-direction:column; gap:14px; }
.cert-item{ display:flex; flex-direction:column; gap:6px; }
.cert-title{ display:flex; gap:10px; flex-wrap:wrap; align-items:baseline; }
.cert-title h3{ margin:0; }
.badge{
  font-size:12px;
  padding:4px 10px;
  border-radius:999px;
  border:1px solid var(--line);
  background: rgba(255,255,255,.04);
  color: var(--muted);
}
.cert-link a{ color: var(--accent); }

.about-grid{
  margin-top:16px;
  display:grid;
  grid-template-columns: repeat(2, 1fr);
  gap:14px;
}
.about-grid h2{ margin: 0 0 10px; font-size:18px; }
.about-grid p{ margin: 0 0 10px; color: var(--muted); line-height: 1.6; }

.about-links{
  display:flex;
  gap:12px;
  flex-wrap:wrap;
}
.about-links a{ color: var(--accent); }

@media (max-width: 900px){
  .about-grid{ grid-template-columns: 1fr; }
}

/* Active page indicator in navbar */
.nav__links a.is-active{
  color: var(--text);
  position: relative;
  font-weight: 800;
}

.nav__links a.is-active::after{
  content: "";
  position: absolute;
  left: 50%;
  bottom: -10px;
  transform: translateX(-50%);
  width: 6px;
  height: 6px;
  border-radius: 999px;
  background: linear-gradient(90deg, var(--accent), var(--accent2));
}

html { scroll-behavior: smooth; }
section { scroll-margin-top: 90px; }

.section-block{
  padding: 6px; /* gives breathing space around inner cards */
}

.section-block .section-title{
  margin: 0 0 14px;
}

.achievements-list {
  display: flex;
  flex-direction: column;
  gap: 16px; /* change to 24px if you want more space */
}

@media (max-width: 768px) {
  .hero {
    flex-direction: column-reverse;
    text-align: center;
  }

  .hero-image img {
    width: 100px;
    height: 100px;
  }
}
.hero {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
}

.hero-content {
  flex: 1;
}

.hero-image img {
  width: 220px;          /* normal size */
  height: 220px;
  border-radius: 50%;    /* round image */
  object-fit: cover;
  border: 2px solid rgba(255, 255, 255, 0.2);
}

/* Projects filter */
.filter-bar{
  margin-top: 14px;
  display:flex;
  gap:10px;
  flex-wrap:wrap;
}

.filter-btn{
  border:1px solid var(--line);
  background: rgba(255,255,255,.04);
  color: var(--muted);
  padding:8px 12px;
  border-radius:999px;
  cursor:pointer;
  font-weight:700;
  font-size:13px;
}

.filter-btn:hover{ opacity:.95; color: var(--text); }

.filter-btn.is-active{
  color:#081022;
  border-color: transparent;
  background: linear-gradient(90deg, var(--accent), var(--accent2));
}

.contact-line{
  margin: 0 0 10px;
}
.contact-line:last-child{ margin-bottom:0; }

.about-links a{
  display:inline-flex;
  align-items:center;
  gap:8px;
  font-weight:600;
}

.about-links img{
  width:18px;
  height:18px;
}

/* ===== Left fixed vertical nav (safe version) ===== */
@media (min-width: 980px){

  /* Keep your content layout intact, just shift it right slightly */
  main.container{
    margin-left: 260px;   /* pushes content right */
    margin-right: auto;
  }

  /* Turn your existing nav into a left sidebar */
  .nav{
    position: fixed;
    top: 18px;
    left: 18px;
    width: 220px;
    height: calc(100vh - 36px);
    z-index: 999;
    border: 1px solid var(--line);
    border-radius: 16px;
    background: rgba(11,18,32,.85);
    backdrop-filter: blur(10px);
    overflow: auto;
  }

  /* Vertical layout inside sidebar */
  .nav__inner{
    display: flex;
    flex-direction: column;
    align-items: stretch;
    gap: 12px;
    padding: 14px;
  }

  /* Brand stays at top */
  .brand{
    padding-bottom: 10px;
    border-bottom: 1px solid var(--line);
  }

  /* Links become vertical */
  .nav__links{
    display: flex !important;
    flex-direction: column;
    align-items: stretch;
    gap: 6px;
    flex-wrap: nowrap;
    margin-top: 10px;
  }

  .nav__links a{
    padding: 10px 12px;
    border-radius: 12px;
    color: var(--muted);
    background: rgba(255,255,255,.03);
  }

  .nav__links a:hover{
    color: var(--text);
    background: rgba(255,255,255,.07);
  }

  /* Contact button at bottom */
  .nav__links a.btn{
    margin-top: auto;
    text-align: center;
    color: #081022;
  }

  /* Hide hamburger on desktop */
  .nav__toggle{ display: none !important; }

  /* Active highlight */
  .nav__links a.is-active{
    color: var(--text);
    font-weight: 800;
    outline: 1px solid rgba(255,255,255,.15);
  }
  .nav__links a.is-active::after{ display:none; }
}

/* ===== Sidebar vertical centering + polish ===== */
@media (min-width: 980px){

  /* Center the sidebar vertically */
  .nav{
    top: 50%;
    transform: translateY(-50%);
    height: auto;
    max-height: calc(100vh - 60px);
    padding: 4px;
  }

  /* Improve spacing inside */
  .nav__inner{
    gap: 14px;
  }

  /* Make link cards look softer & cleaner */
  .nav__links a{
    background: linear-gradient(
      180deg,
      rgba(255,255,255,.05),
      rgba(255,255,255,.02)
    );
    border: 1px solid rgba(255,255,255,.08);
    transition: all 0.2s ease;
  }

  .nav__links a:hover{
    transform: translateX(4px);
    background: rgba(255,255,255,.08);
  }

  /* Highlight active section more clearly */
  .nav__links a.is-active{
    background: linear-gradient(
      90deg,
      rgba(110,168,255,.25),
      rgba(167,139,250,.25)
    );
    color: var(--text);
    font-weight: 800;
    border-color: rgba(255,255,255,.25);
  }

  /* Fix Contact button visibility */
  .nav__links a.btn{
    margin-top: 18px;
    background: linear-gradient(90deg, var(--accent), var(--accent2));
    color: #081022 !important;
    font-weight: 800;
    border: none;
    box-shadow: 0 6px 18px rgba(110,168,255,.35);
  }

  .nav__links a.btn:hover{
    transform: translateX(4px) scale(1.02);
    opacity: 1;
  }
}

/* ===== Footer perfectly centered ===== */
.footer{
  margin-top: 72px;
  padding: 36px 0;
  background: rgba(17,26,46,.22);
  border-top: 1px solid var(--line);
}

/* Center everything */
.footer .container{
  max-width: 1100px;
  margin: 0 auto;
  padding: 0 24px;
  display: flex;
  flex-direction: column;
  align-items: center;      /* horizontal center */
  text-align: center;       /* text center */
  gap: 16px;
}

/* Footer title */
.footer__title{
  font-weight: 900;
  letter-spacing: .3px;
}

/* Links centered */
.footer__links{
  display: flex;
  gap: 14px;
  flex-wrap: wrap;
  justify-content: center;
}

/* Link styling */
.footer__links a{
  color: var(--muted);
  padding: 8px 14px;
  border-radius: 999px;
  background: rgba(255,255,255,.05);
  border: 1px solid rgba(255,255,255,.10);
  font-size: 14px;
}

.footer__links a:hover{
  color: var(--text);
  background: rgba(255,255,255,.10);
}

/* Right block centered as well */
.footer__right{
  line-height: 1.6;
  color: var(--muted);
}


/* ===== Expand main content to fill right gap ===== */
@media (min-width: 980px){

  main.container{
    max-width: calc(100vw - 300px); /* sidebar + spacing */
    margin-left: 260px;             /* sidebar width */
    margin-right: 260px;
  }

}