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

:root {
  --bg:        #0a0c10;
  --bg2:       #0f1218;
  --bg3:       #151a22;
  --border:    #1e2530;
  --accent:    #00d4aa;
  --accent2:   #0088ff;
  --dim:       #4a5568;
  --mid:       #8892a4;
  --text:      #c9d1e0;
  --bright:    #e8edf5;
  --red:       #ff4d6a;
  --yellow:    #ffd166;
  --font-mono: 'IBM Plex Mono', monospace;
  --font-sans: 'IBM Plex Sans', sans-serif;
}

html { scroll-behavior: smooth; }

body {
  background: var(--bg);
  color: var(--text);
  font-family: var(--font-sans);
  font-size: 15px;
  line-height: 1.7;
  min-height: 100vh;
}

/* ── Scrollbar ── */
::-webkit-scrollbar { width: 6px; }
::-webkit-scrollbar-track { background: var(--bg); }
::-webkit-scrollbar-thumb { background: var(--border); border-radius: 3px; }

/* ── Layout ── */
.layout {
  display: grid;
  grid-template-columns: 280px 1fr;
  min-height: 100vh;
}

/* ── Sidebar ── */
aside {
  position: sticky;
  top: 0;
  height: 100vh;
  background: var(--bg2);
  border-right: 1px solid var(--border);
  display: flex;
  flex-direction: column;
  padding: 2.5rem 1.8rem;
  overflow-y: auto;
}

.profile-photo {
  width: 80px;
  height: 80px;
  border-radius: 50%;
  border: 2px solid var(--accent);
  object-fit: cover;
  margin-bottom: 1rem;
}

.profile-name {
  font-family: var(--font-mono);
  font-size: 1.15rem;
  font-weight: 600;
  color: var(--bright);
  letter-spacing: -0.02em;
}

.profile-title {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  color: var(--accent);
  text-transform: uppercase;
  letter-spacing: 0.12em;
  margin-top: 0.25rem;
}

.profile-loc {
  font-size: 0.78rem;
  color: var(--dim);
  margin-top: 0.5rem;
}

.divider {
  border: none;
  border-top: 1px solid var(--border);
  margin: 1.5rem 0;
}

nav { flex: 1; }

nav a {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  padding: 0.45rem 0.6rem;
  border-radius: 4px;
  color: var(--mid);
  text-decoration: none;
  font-family: var(--font-mono);
  font-size: 0.78rem;
  letter-spacing: 0.04em;
  transition: color 0.15s, background 0.15s;
  margin-bottom: 0.1rem;
}

nav a:hover, nav a.active {
  color: var(--accent);
  background: rgba(0, 212, 170, 0.07);
}

nav a .dot {
  width: 5px; height: 5px;
  border-radius: 50%;
  background: var(--border);
  flex-shrink: 0;
  transition: background 0.15s;
}

nav a:hover .dot, nav a.active .dot { background: var(--accent); }

.socials {
  display: flex;
  gap: 0.7rem;
  flex-wrap: wrap;
  margin-top: auto;
  padding-top: 1.5rem;
}

.socials a {
  color: var(--dim);
  text-decoration: none;
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.05em;
  transition: color 0.15s;
  border: 1px solid var(--border);
  padding: 0.2rem 0.5rem;
  border-radius: 3px;
}

.socials a:hover { color: var(--accent); border-color: var(--accent); }

/* ── Main Content ── */
main {
  padding: 3rem 3.5rem;
  max-width: 860px;
}

/* ── Prompt header ── */
.prompt {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  color: var(--dim);
  margin-bottom: 0.4rem;
}

.prompt span { color: var(--accent); }

/* ── Section ── */
section {
  margin-bottom: 4rem;
  scroll-margin-top: 2rem;
}

.section-label {
  font-family: var(--font-mono);
  font-size: 0.65rem;
  text-transform: uppercase;
  letter-spacing: 0.18em;
  color: var(--accent);
  margin-bottom: 0.5rem;
}

h1 {
  font-family: var(--font-mono);
  font-size: 2.4rem;
  font-weight: 600;
  color: var(--bright);
  line-height: 1.15;
  letter-spacing: -0.03em;
}

h2 {
  font-family: var(--font-mono);
  font-size: 1.25rem;
  font-weight: 500;
  color: var(--bright);
  margin-bottom: 1.5rem;
  padding-bottom: 0.5rem;
  border-bottom: 1px solid var(--border);
}

h2 .hash { color: var(--accent); margin-right: 0.3rem; }

.hero-sub {
  font-size: 1.05rem;
  color: var(--mid);
  max-width: 540px;
  margin-top: 1.2rem;
  line-height: 1.8;
}

.hero-sub strong { color: var(--text); font-weight: 500; }

/* ── Tags ── */
.tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-top: 1.2rem;
}

.tag {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  padding: 0.25rem 0.7rem;
  border-radius: 3px;
  border: 1px solid var(--border);
  color: var(--mid);
  letter-spacing: 0.04em;
  background: var(--bg2);
}

.tag.accent { border-color: rgba(0,212,170,0.4); color: var(--accent); }
.tag.blue { border-color: rgba(0,136,255,0.35); color: var(--accent2); }

/* ── Experience cards ── */
.exp-item {
  border-left: 2px solid var(--border);
  padding: 0 0 2rem 1.5rem;
  position: relative;
  transition: border-color 0.2s;
}

.exp-item:last-child { padding-bottom: 0; }

.exp-item::before {
  content: '';
  position: absolute;
  left: -5px;
  top: 6px;
  width: 8px; height: 8px;
  border-radius: 50%;
  background: var(--border);
  border: 2px solid var(--bg);
  transition: background 0.2s;
}

.exp-item:hover { border-color: var(--accent); }
.exp-item:hover::before { background: var(--accent); }

.exp-role {
  font-family: var(--font-mono);
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--bright);
}

.exp-company {
  font-size: 0.85rem;
  color: var(--accent2);
  margin-top: 0.1rem;
}

.exp-meta {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  color: var(--dim);
  margin: 0.3rem 0 0.8rem;
}

.exp-list {
  list-style: none;
  font-size: 0.86rem;
  color: var(--mid);
}

.exp-list li {
  padding: 0.2rem 0;
  padding-left: 1.1rem;
  position: relative;
}

.exp-list li::before {
  content: '→';
  position: absolute;
  left: 0;
  color: var(--dim);
  font-size: 0.75rem;
}

/* ── Skills grid ── */
.skills-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
  gap: 1px;
  border: 1px solid var(--border);
  border-radius: 6px;
  overflow: hidden;
  background: var(--border);
  margin-bottom: 1.5rem;
}

.skill-cell {
  background: var(--bg2);
  padding: 0.9rem 1.1rem;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--mid);
  transition: background 0.15s, color 0.15s;
  cursor: default;
}

.skill-cell:hover { background: var(--bg3); color: var(--text); }

.skill-cell .skill-icon { color: var(--accent); margin-right: 0.4rem; font-size: 0.7rem; }

/* ── Education ── */
.edu-card {
  background: var(--bg2);
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 1.2rem 1.4rem;
  margin-bottom: 1rem;
  transition: border-color 0.2s;
}

.edu-card:hover { border-color: rgba(0,212,170,0.3); }

.edu-school {
  font-family: var(--font-mono);
  font-size: 0.88rem;
  font-weight: 600;
  color: var(--bright);
}

.edu-degree {
  font-size: 0.84rem;
  color: var(--mid);
  margin-top: 0.2rem;
}

.edu-meta {
  font-family: var(--font-mono);
  font-size: 0.68rem;
  color: var(--dim);
  margin-top: 0.4rem;
}

.edu-honor {
  display: inline-block;
  margin-top: 0.5rem;
  font-family: var(--font-mono);
  font-size: 0.68rem;
  padding: 0.15rem 0.5rem;
  border: 1px solid rgba(255, 209, 102, 0.4);
  color: var(--yellow);
  border-radius: 3px;
}

/* ── Certs ── */
.cert-group { margin-bottom: 1.5rem; }

.cert-group-title {
  font-family: var(--font-mono);
  font-size: 0.68rem;
  text-transform: uppercase;
  letter-spacing: 0.14em;
  color: var(--dim);
  margin-bottom: 0.7rem;
}

.cert-list { list-style: none; }

.cert-list li {
  font-size: 0.84rem;
  color: var(--mid);
  padding: 0.3rem 0;
  border-bottom: 1px solid var(--border);
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.cert-list li:last-child { border-bottom: none; }

.cert-list li::before {
  content: '✓';
  font-family: var(--font-mono);
  font-size: 0.7rem;
  color: var(--accent);
}

/* ── Contact ── */
.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1rem;
}

.contact-item {
  background: var(--bg2);
  border: 1px solid var(--border);
  border-radius: 6px;
  padding: 1rem 1.2rem;
  transition: border-color 0.2s;
}

.contact-item:hover { border-color: rgba(0,212,170,0.35); }

.contact-label {
  font-family: var(--font-mono);
  font-size: 0.65rem;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--dim);
  margin-bottom: 0.3rem;
}

.contact-val {
  font-size: 0.85rem;
  color: var(--text);
}

.contact-val a {
  color: var(--accent2);
  text-decoration: none;
}

.contact-val a:hover { text-decoration: underline; }

/* ── Footer ── */
footer {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  color: var(--dim);
  margin-top: 3rem;
  padding-top: 1.5rem;
  border-top: 1px solid var(--border);
}

/* ── Blinking cursor ── */
@keyframes blink { 0%, 100% { opacity: 1; } 50% { opacity: 0; } }
.cursor {
  display: inline-block;
  width: 2px; height: 1.1em;
  background: var(--accent);
  vertical-align: middle;
  animation: blink 1.1s step-end infinite;
  margin-left: 3px;
}

/* ── Tablet ── */
@media (max-width: 1024px) {
  .layout { grid-template-columns: 230px 1fr; }
  main { padding: 2.5rem 2rem; }
}

/* ── Mobile ── */
@media (max-width: 768px) {
  .layout { grid-template-columns: 1fr; }

  aside {
    position: relative;
    height: auto;
    border-right: none;
    border-bottom: 1px solid var(--border);
    padding: 1.5rem 1.2rem;
  }

  /* Flatten the nav into a horizontal wrapping row to save vertical space */
  nav {
    display: flex;
    flex-wrap: wrap;
    gap: 0.3rem;
    flex: none;
    margin: 0.8rem 0;
  }

  nav a {
    display: inline-flex;
    font-size: 0.72rem;
    padding: 0.3rem 0.6rem;
    margin-bottom: 0;
  }

  .socials { padding-top: 1rem; }

  main { padding: 2rem 1.5rem; }
  h1 { font-size: 1.7rem; }
  .contact-grid { grid-template-columns: 1fr; }
}

/* ── Small mobile (≤480 px) ── */
@media (max-width: 480px) {
  main { padding: 1.5rem 1rem; }
  h1 { font-size: 1.4rem; }
  section { margin-bottom: 2.5rem; }
  .hero-sub { font-size: 0.92rem; }
  .skills-grid { grid-template-columns: repeat(auto-fill, minmax(140px, 1fr)); }
}

/* ── Fade-in animation ── */
@keyframes fadeUp { from { opacity: 0; transform: translateY(12px); } to { opacity: 1; transform: translateY(0); } }
section { animation: fadeUp 0.5s ease both; }
section:nth-child(2) { animation-delay: 0.05s; }
section:nth-child(3) { animation-delay: 0.1s; }
section:nth-child(4) { animation-delay: 0.15s; }
section:nth-child(5) { animation-delay: 0.2s; }
section:nth-child(6) { animation-delay: 0.25s; }

/* ── Skills subheading ── */
.skills-subheading {
  margin-bottom: 0.6rem;
  font-family: var(--font-mono);
  font-size: 0.68rem;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--dim);
}