/* ═══════════════════════════════════════════
   TOKENS & RESET
═══════════════════════════════════════════ */
@import url('https://fonts.googleapis.com/css2?family=JetBrains+Mono:wght@300;400;500;600&family=Syne:wght@700;800&display=swap');

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

:root {
  --bg:         #0b0d0c;
  --bg2:        #111412;
  --bg3:        #161917;
  --surface:    #1c201d;
  --border:     #252b26;
  --border2:    #2e362f;
  --green:      #3dd68c;
  --green-dim:  #142b1d;
  --green-mid:  #265c38;
  --green-glow: rgba(61,214,140,0.12);
  --blue:       #5b9cf6;
  --amber:      #e8a838;
  --purple:     #b57bee;
  --red:        #e05a5a;
  --text:       #dce8dc;
  --muted:      #6b7d6b;
  --muted2:     #3a483a;
  --mono: 'JetBrains Mono', 'Fira Code', monospace;
  --sans: 'Syne', system-ui, sans-serif;
}

html { scroll-behavior: smooth; font-size: 14px; }

body {
  background: var(--bg);
  color: var(--text);
  font-family: var(--mono);
  line-height: 1.7;
  overflow-x: hidden;
}

::-webkit-scrollbar { width: 3px; }
::-webkit-scrollbar-track { background: var(--bg); }
::-webkit-scrollbar-thumb { background: var(--green-mid); }

/* ═══════════════════════════════════════════
   NAV
═══════════════════════════════════════════ */
.nav {
  position: fixed;
  top: 0; left: 0; right: 0;
  z-index: 200;
  height: 54px;
  background: rgba(11,13,12,0.9);
  backdrop-filter: blur(16px);
  border-bottom: 1px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 48px;
}

.nav-logo {
  font-family: var(--sans);
  font-size: 15px;
  font-weight: 800;
  color: var(--green);
  letter-spacing: .04em;
}

.nav-links { display: flex; gap: 28px; list-style: none; }
.nav-links li a {
  color: var(--muted);
  text-decoration: none;
  font-size: 11.5px;
  letter-spacing: .08em;
  text-transform: uppercase;
  transition: color .2s;
  cursor: pointer;
}
.nav-links li a:hover,
.nav-links li a.active { color: var(--green); }

/* ═══════════════════════════════════════════
   HERO
═══════════════════════════════════════════ */
.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  padding: 90px 80px 60px;
  position: relative;
  overflow: hidden;
}

.hero-grid-bg {
  position: absolute; inset: 0;
  background-image:
    linear-gradient(rgba(61,214,140,.025) 1px, transparent 1px),
    linear-gradient(90deg, rgba(61,214,140,.025) 1px, transparent 1px);
  background-size: 44px 44px;
  pointer-events: none;
}

.hero-glow {
  position: absolute;
  top: 15%; right: 5%;
  width: 520px; height: 520px;
  background: radial-gradient(ellipse, rgba(61,214,140,.07) 0%, transparent 70%);
  pointer-events: none;
}

.hero-inner {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 60px;
  align-items: center;
  width: 100%;
  max-width: 1100px;
  margin: 0 auto;
}

.hero-left {}

.prompt-row {
  font-size: 12px;
  color: var(--muted);
  margin-bottom: 18px;
  display: flex; align-items: center; gap: 8px;
}
.prompt-row .ps  { color: var(--green); }
.prompt-row .cmd { color: var(--blue); }

.hero-name {
  font-family: var(--sans);
  font-size: clamp(48px, 6.5vw, 80px);
  font-weight: 800;
  line-height: 1;
  letter-spacing: -0.025em;
  color: #fff;
  margin-bottom: 8px;
}

.hero-role {
  font-size: 17px;
  color: var(--green);
  margin-bottom: 24px;
  display: flex; align-items: center; gap: 10px;
  min-height: 28px;
}

.cursor {
  display: inline-block;
  width: 2px; height: 1.1em;
  background: var(--green);
  vertical-align: middle;
  animation: blink 1s step-end infinite;
}
@keyframes blink { 50% { opacity: 0; } }

.hero-summary {
  max-width: 580px;
  color: #8fa88f; font-size: 13.5px; line-height: 1.85;
  margin-bottom: 32px;
}

.hero-badges {
  display: flex; flex-wrap: wrap; gap: 7px;
  margin-bottom: 36px;
}

.badge {
  font-size: 11.5px; padding: 4px 11px;
  border: 1px solid var(--border2); color: var(--muted);
  background: var(--bg2); border-radius: 2px;
}
.badge.hot { border-color: var(--green-mid); color: var(--green); background: var(--green-dim); }

.hero-cta { display: flex; gap: 10px; flex-wrap: wrap; }

.btn {
  display: inline-flex; align-items: center; gap: 6px;
  padding: 9px 20px; font-family: var(--mono); font-size: 12.5px;
  cursor: pointer; text-decoration: none;
  transition: all .18s; border: 1px solid;
}
.btn-primary { background: var(--green); color: #0b0d0c; border-color: var(--green); font-weight: 600; }
.btn-primary:hover { background: #5aebb0; }
.btn-ghost { background: transparent; color: var(--text); border-color: var(--border2); }
.btn-ghost:hover { border-color: var(--green); color: var(--green); }

/* AVATARS */
.avatars-stack {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 18px;
  position: relative;
}

.avatar-card {
  position: relative;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 8px;
  transition: transform .3s;
}
.avatar-card:hover { transform: translateY(-4px); }

.avatar-img {
  width: 140px; height: 140px; border-radius: 50%;
  object-fit: cover;
  border: 2px solid var(--green-mid);
  box-shadow: 0 0 0 4px var(--green-dim);
  transition: box-shadow .3s, border-color .3s;
}
.avatar-img:hover { border-color: var(--green); box-shadow: 0 0 0 6px rgba(61,214,140,.15); }

.avatar-img.square {
  border-radius: 16px;
  width: 120px; height: 120px;
}

.avatar-label {
  font-size: 10.5px; color: var(--muted);
  letter-spacing: .1em; text-transform: uppercase;
}

.avatar-connector {
  width: 1px; height: 20px; background: var(--border2);
}

/* ═══════════════════════════════════════════
   SECTIONS
═══════════════════════════════════════════ */
.section-wrap {
  max-width: 1100px; margin: 0 auto;
  padding: 80px 80px;
}

#experience { background: var(--bg2); }
#skills     { background: var(--bg); }
#projects   { background: var(--bg2); }
#education  { background: var(--bg); }
#contact    { background: var(--bg2); }

.section-label {
  display: flex; align-items: center; gap: 14px;
  font-size: 11px; letter-spacing: .15em; text-transform: uppercase;
  color: var(--green); margin-bottom: 36px;
}
.section-label::after { content: ''; flex: 1; height: 1px; background: var(--border); }

/* ═══════════════════════════════════════════
   EXPERIENCE
═══════════════════════════════════════════ */
.exp-card {
  border: 1px solid var(--border); background: var(--bg3);
  padding: 28px 32px; position: relative;
  transition: border-color .2s;
}
.exp-card::before {
  content: ''; position: absolute;
  left: 0; top: 0; bottom: 0; width: 3px; background: var(--green);
}
.exp-card:hover { border-color: var(--green-mid); }

.exp-top {
  display: flex; justify-content: space-between;
  align-items: flex-start; gap: 16px; margin-bottom: 6px; flex-wrap: wrap;
}
.exp-role { font-family: var(--sans); font-size: 18px; font-weight: 700; color: #fff; }
.exp-period {
  font-size: 11.5px; color: var(--muted); background: var(--surface);
  padding: 3px 10px; border: 1px solid var(--border); white-space: nowrap;
}
.exp-company { font-size: 12.5px; color: var(--green); margin-bottom: 12px; }

.exp-desc {
  font-size: 13px; color: #8a9e8a; line-height: 1.78;
  margin-bottom: 16px; padding-bottom: 16px;
  border-bottom: 1px dashed var(--border);
}

.exp-list { list-style: none; display: flex; flex-direction: column; gap: 9px; }
.exp-list li { display: flex; gap: 12px; font-size: 13px; color: #b0c4b0; line-height: 1.65; }
.exp-list li .arrow { color: var(--green); flex-shrink: 0; }
.exp-list li strong { color: var(--text); font-weight: 500; }

.exp-tech {
  display: flex; flex-wrap: wrap; gap: 6px;
  margin-top: 18px; padding-top: 16px; border-top: 1px dashed var(--border);
}
.tech-tag {
  font-size: 11px; color: var(--blue);
  border: 1px solid #1f3060; background: #0e1828; padding: 2px 8px;
}

/* ═══════════════════════════════════════════
   SKILLS
═══════════════════════════════════════════ */
.skills-filter {
  display: flex; gap: 8px; flex-wrap: wrap;
  margin-bottom: 28px;
}
.filter-btn {
  font-family: var(--mono); font-size: 11.5px;
  padding: 5px 14px; border: 1px solid var(--border);
  background: transparent; color: var(--muted);
  cursor: pointer; transition: all .18s;
}
.filter-btn:hover { border-color: var(--green-mid); color: var(--green); }
.filter-btn.active { border-color: var(--green); color: var(--green); background: var(--green-dim); }

.skills-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 14px;
}

.skill-card {
  border: 1px solid var(--border); background: var(--bg2);
  padding: 18px 20px; transition: border-color .2s;
}
.skill-card:hover { border-color: var(--green-mid); }

.skill-card-title {
  font-size: 10px; letter-spacing: .14em; text-transform: uppercase;
  color: var(--muted); margin-bottom: 11px;
  display: flex; align-items: center; gap: 8px;
}
.skill-card-title .dot { width: 6px; height: 6px; border-radius: 50%; background: var(--green); }

.skill-tags { display: flex; flex-wrap: wrap; gap: 5px; }

.s-tag { font-size: 12px; padding: 3px 9px; border: 1px solid; transition: opacity .2s; }
.s-tag.expert   { background: var(--green-dim); color: var(--green); border-color: var(--green-mid); }
.s-tag.personal { background: #1a2a14; color: #78c258; border-color: #2a5020; }
.s-tag.learning { background: var(--bg3); color: var(--muted); border-color: var(--border); font-style: italic; }
.s-tag.hidden   { opacity: 0; pointer-events: none; }

.skills-legend {
  display: flex; gap: 20px; margin-bottom: 20px; flex-wrap: wrap;
  font-size: 11.5px;
}
.legend-item { display: flex; align-items: center; gap: 7px; color: var(--muted); }
.legend-dot  { width: 10px; height: 10px; border-radius: 1px; }

/* ═══════════════════════════════════════════
   PERSONAL PROJECTS
═══════════════════════════════════════════ */
.projects-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 14px;
}

.proj-card {
  border: 1px solid var(--border); background: var(--bg3);
  padding: 20px 22px; transition: border-color .25s, transform .25s;
  position: relative; overflow: hidden;
}
.proj-card::before {
  content: ''; position: absolute;
  left: 0; top: 0; bottom: 0; width: 2px;
}
.proj-card.cpp-color::before  { background: var(--green); }
.proj-card.py-color::before   { background: var(--amber); }
.proj-card.mob-color::before  { background: var(--purple); }
.proj-card.hpc-color::before  { background: var(--blue); }

.proj-card:hover { border-color: var(--border2); transform: translateY(-2px); }

.proj-card-head {
  display: flex; justify-content: space-between; align-items: flex-start;
  margin-bottom: 10px; gap: 10px;
}
.proj-card-title { font-family: var(--sans); font-size: 15px; font-weight: 700; color: #fff; }
.proj-card-type {
  font-size: 10px; padding: 2px 8px;
  background: var(--surface); color: var(--muted);
  border: 1px solid var(--border); white-space: nowrap;
}

.proj-card-desc { font-size: 12.5px; color: #8a9e8a; line-height: 1.72; margin-bottom: 12px; }

.proj-tags { display: flex; flex-wrap: wrap; gap: 5px; }
.proj-tag  { font-size: 11px; padding: 2px 7px; border: 1px solid var(--border2); color: var(--muted); }

/* ═══════════════════════════════════════════
   EDUCATION
═══════════════════════════════════════════ */
.edu-card {
  border: 1px solid var(--border); background: var(--bg2);
  padding: 26px 30px;
  display: grid; grid-template-columns: 1fr auto;
  gap: 20px; align-items: start;
}
.edu-uni  { font-family: var(--sans); font-size: 22px; font-weight: 700; color: #fff; margin-bottom: 4px; }
.edu-spec { font-size: 13px; color: var(--green); margin-bottom: 2px; }
.edu-dept { font-size: 12px; color: var(--muted); margin-bottom: 14px; }
.edu-courses { font-size: 12.5px; color: #7a907a; line-height: 1.8; }
.edu-years { font-family: var(--sans); font-size: 24px; font-weight: 700; color: var(--green); text-align: right; }
.edu-course-num { font-size: 12px; color: var(--muted); text-align: right; }

/* ═══════════════════════════════════════════
   CONTACT
═══════════════════════════════════════════ */
.contact-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 20px; }
.contact-card { border: 1px solid var(--border); background: var(--bg3); padding: 22px; }

.contact-list { list-style: none; }
.contact-list li {
  display: flex; justify-content: space-between;
  padding: 9px 0; border-bottom: 1px dashed var(--border);
  font-size: 13px; gap: 12px;
}
.contact-list li:last-child { border-bottom: none; }
.c-key { color: var(--muted); font-size: 11.5px; }
.c-val a { color: var(--green); text-decoration: none; }
.c-val a:hover { text-decoration: underline; }

.open-to {
  border: 1px solid var(--green-mid); background: var(--green-dim);
  padding: 14px 18px; font-size: 13px; color: var(--green); line-height: 1.75;
  margin-top: 14px;
}
.open-to-label { font-size: 10px; letter-spacing: .14em; text-transform: uppercase; color: var(--green-mid); margin-bottom: 4px; }

/* ═══════════════════════════════════════════
   ATS (machine-readable)
═══════════════════════════════════════════ */
.ats-footer {
  background: var(--bg2); border-top: 1px dashed var(--border);
  padding: 16px 80px; font-size: 10px;
  color: var(--muted2); line-height: 1.9;
}
.ats-footer p { max-width: 1100px; margin: 0 auto; }

/* ═══════════════════════════════════════════
   PAGE FOOTER
═══════════════════════════════════════════ */
footer {
  background: var(--bg); border-top: 1px solid var(--border);
  padding: 18px 80px;
  display: flex; justify-content: space-between; align-items: center;
  font-size: 11.5px; color: var(--muted); flex-wrap: wrap; gap: 8px;
}
footer span { color: var(--green); }

/* ═══════════════════════════════════════════
   ANIMATIONS
═══════════════════════════════════════════ */
.fade-up {
  opacity: 0; transform: translateY(22px);
  transition: opacity .55s ease, transform .55s ease;
}
.fade-up.in { opacity: 1; transform: none; }

/* ═══════════════════════════════════════════
   RESPONSIVE
═══════════════════════════════════════════ */
@media (max-width: 900px) {
  .nav { padding: 0 20px; }
  .hero { padding: 90px 24px 48px; }
  .hero-inner { grid-template-columns: 1fr; }
  .avatars-stack { flex-direction: row; justify-content: center; }
  .avatar-connector { width: 20px; height: 1px; }
  .section-wrap { padding: 56px 24px; }
  .contact-grid { grid-template-columns: 1fr; }
  .edu-card { grid-template-columns: 1fr; }
  .ats-footer, footer { padding-left: 24px; padding-right: 24px; }
}