:root{
  --bg:#0F1729;
  --bg-raised:#141F38;
  --text:#EDEEF0;
  --text-dim:#8A93A6;
  --line:#24304F;
  --accent:#4F7CFF;
  --accent-warm:#FFB84D;
  --mono: 'JetBrains Mono', 'Courier New', monospace;
  --sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --maxw: 1100px;
}

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

html{ scroll-behavior:smooth; }

body{
  color:var(--text);
  font-family:var(--sans);
  line-height:1.6;
  -webkit-font-smoothing:antialiased;
  background:var(--bg);
}

main{
  display:block;
  background:
    linear-gradient(var(--line) 1px, transparent 1px) 0 0/40px 40px,
    linear-gradient(90deg, var(--line) 1px, transparent 1px) 0 0/40px 40px;
}

/* ---------- Cursor-following dot glow ---------- */
.cursor-glow{
  position:fixed; inset:0;
  z-index:-1;
  pointer-events:none;
}
.cursor-glow::before,
.cursor-glow::after{
  content:'';
  position:absolute; inset:0;
  background-image:radial-gradient(var(--accent) 1px, transparent 1.5px);
  background-size:26px 26px;
}
/* faint ambient grid, always visible (not just under the cursor) */
.cursor-glow::before{
  opacity:0.09;
}
/* brighter spotlight layer that follows the cursor */
.cursor-glow::after{
  opacity:0;
  transition:opacity 0.4s ease;
  -webkit-mask-image:radial-gradient(240px circle at var(--x, -999px) var(--y, -999px), black 0%, rgba(0,0,0,0.5) 45%, transparent 75%);
  mask-image:radial-gradient(240px circle at var(--x, -999px) var(--y, -999px), black 0%, rgba(0,0,0,0.5) 45%, transparent 75%);
}
.cursor-glow.active::after{ opacity:0.8; }

/* Skip the effect on touch devices — no real cursor to follow, and it just costs paint time */
@media (hover:none), (pointer:coarse){
  .cursor-glow{ display:none; }
}

a{ color:inherit; text-decoration:none; }
ul{ list-style:none; }
img{ max-width:100%; display:block; }

.wrap{ max-width:var(--maxw); margin:0 auto; padding:0 24px; }

/* ---------- Header / Nav ---------- */
header{
  position:sticky; top:0; z-index:100;
  background:rgba(15,23,41,0.85);
  backdrop-filter:blur(10px);
  border-bottom:1px solid var(--line);
}
.nav-inner{
  display:flex; align-items:center; justify-content:space-between;
  padding:18px 24px;
  max-width:var(--maxw); margin:0 auto;
}
.site-heading{
  font-family:var(--mono);
  font-size:1.35rem;
  font-weight:700;
  color:var(--text);
  letter-spacing:-0.01em;
}
.site-heading span{ color:var(--accent-warm); }

nav.primary-nav ul{ display:flex; gap:32px; }
nav.primary-nav a{
  font-family:var(--mono);
  font-size:0.85rem;
  color:var(--text-dim);
  transition:color 0.2s ease;
}
nav.primary-nav a::before{ content:'~/'; color:var(--accent); }
nav.primary-nav a:hover, nav.primary-nav a:focus-visible{ color:var(--accent-warm); outline:none; }
nav.primary-nav a:hover::before, nav.primary-nav a:focus-visible::before{ color:var(--accent-warm); }

.nav-toggle{
  display:none;
  background:none; border:1px solid var(--line); border-radius:4px;
  width:40px; height:36px;
  cursor:pointer;
  position:relative;
}
.nav-toggle span, .nav-toggle span::before, .nav-toggle span::after{
  content:''; position:absolute; left:9px; width:22px; height:2px;
  background:var(--text); transition:transform 0.25s ease, opacity 0.25s ease, top 0.25s ease;
}
.nav-toggle span{ top:17px; }
.nav-toggle span::before{ top:-7px; }
.nav-toggle span::after{ top:7px; }
.nav-toggle.open span{ background:transparent; }
.nav-toggle.open span::before{ top:0; transform:rotate(45deg); }
.nav-toggle.open span::after{ top:0; transform:rotate(-45deg); }

/* ---------- Hero ---------- */
.hero{
  padding:120px 0 90px;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:48px;
}
.hero-text{ flex:1; min-width:0; }
.hero-photo{
  width:280px; height:280px;
  border-radius:50%;
  border:1px solid var(--line);
  flex-shrink:0;
  background-image:url("../assets/imgs/profile.jpg");
  background-size:cover;
  background-position:center;
  user-select:none;
  -webkit-user-drag:none;
}
.eyebrow{
  font-family:var(--mono); font-size:0.8rem; color:var(--accent);
  letter-spacing:0.05em;
  margin-bottom:20px;
}
.eyebrow::before{ content:'~/'; color:var(--text-dim); }
h1{
  font-family:var(--mono);
  font-weight:700;
  font-size:clamp(2.2rem, 6vw, 4rem);
  line-height:1.08;
  letter-spacing:-0.01em;
  max-width:16ch;
}
.accent{ color:var(--accent-warm); }
.hero-sub{
  margin-top:24px;
  font-size:1.15rem;
  color:var(--text-dim);
  max-width:52ch;
}
.hero-cta{ margin-top:36px; display:flex; gap:16px; flex-wrap:wrap; }
.btn{
  font-family:var(--mono); font-size:0.85rem;
  padding:13px 24px; border-radius:4px;
  border:1px solid var(--line);
  background:none;
  color:var(--text);
  cursor:pointer;
  transition:border-color 0.2s ease, transform 0.15s ease;
}
.btn:hover, .btn:focus-visible{ border-color:var(--accent); transform:translateY(-2px); outline:none; }
.btn.solid{ background:var(--accent); border-color:var(--accent); color:#0B1220; font-weight:600; }
.btn.solid:hover{ background:var(--accent-warm); border-color:var(--accent-warm); }
.btn.solid:disabled{ opacity:0.6; cursor:not-allowed; transform:none; }

/* ---------- Section shell ---------- */
section{ padding:90px 0; }
.section-head{
  font-family:var(--mono); font-size:0.8rem; color:var(--accent);
  margin-bottom:48px;
}
.section-head::before{ content:'~/'; color:var(--text-dim); }
h2.section-title{
  font-family:var(--mono); font-size:1.9rem; margin-top:6px; color:var(--text);
}

/* ---------- About ---------- */
.about-grid{
  display:grid; grid-template-columns: 1fr 1.4fr; gap:48px; align-items:start;
}
.about-card{
  background:var(--bg-raised); border:1px solid var(--line); border-radius:6px;
  padding:28px; position:relative;
}
.about-card::before{
  content:''; position:absolute; top:-1px; left:-1px; width:14px; height:14px;
  border-top:2px solid var(--accent-warm); border-left:2px solid var(--accent-warm);
}
.about-card::after{
  content:''; position:absolute; bottom:-1px; right:-1px; width:14px; height:14px;
  border-bottom:2px solid var(--accent-warm); border-right:2px solid var(--accent-warm);
}
.about-text p{ color:var(--text-dim); margin-bottom:16px; max-width:60ch; }
.about-text p:last-child{ margin-bottom:0; }

.id-line{
  font-family:var(--mono); font-size:0.9rem; color:var(--text);
  display:flex; gap:14px; padding:10px 0; border-bottom:1px solid var(--line);
}
.id-line:last-child{ border-bottom:none; }
.id-line span{ color:var(--text-dim); min-width:64px; flex-shrink:0; }

/* ---------- Stack & Concepts ---------- */
.chip-grid{ display:flex; flex-wrap:wrap; gap:12px; }
.chip{
  font-family:var(--mono); font-size:0.85rem; color:var(--text);
  padding:10px 18px; border:1px solid var(--line); border-radius:6px;
  background:var(--bg-raised);
  transition:border-color 0.2s ease, transform 0.15s ease;
  display:inline-flex; align-items:center; gap:10px;
}
.chip:hover{ border-color:var(--accent); transform:translateY(-2px); }
.chip i{ font-size:1.1rem; line-height:1; }
/* Flask's and Linux's devicon marks render as solid black by default;
   recolor them so they're visible on the dark background */
.chip i.devicon-flask-original,
.chip i.devicon-linux-plain{ color:var(--text); }

.concept-grid{ display:grid; grid-template-columns:repeat(auto-fit, minmax(220px, 1fr)); gap:20px; }
.concept-card{
  border:1px solid var(--line); border-radius:6px; padding:22px;
  background:var(--bg-raised);
}
.concept-card h3{ font-family:var(--mono); font-size:1rem; color:var(--accent-warm); margin-bottom:8px; }
.concept-card p{ color:var(--text-dim); font-size:0.9rem; }

/* ---------- Credentials ---------- */
.cert-grid{ display:grid; grid-template-columns:repeat(auto-fit, minmax(280px, 1fr)); gap:20px; }
.cert-card{
  border:1px solid var(--line); border-radius:6px; padding:24px;
  background:var(--bg-raised);
  transition:border-color 0.2s ease, transform 0.2s ease;
}
.cert-top{ display:flex; align-items:flex-start; justify-content:space-between; gap:12px; margin-bottom:8px; }
.cert-top h3{ font-family:var(--mono); font-size:1.05rem; color:var(--text); }
.cert-issuer{ font-family:var(--mono); font-size:0.8rem; color:var(--accent); margin-bottom:12px; }
.cert-card > p:last-child{ color:var(--text-dim); font-size:0.9rem; }
.cert-status{
  font-family:var(--mono); font-size:0.7rem; white-space:nowrap;
  padding:4px 10px; border-radius:20px; flex-shrink:0;
}
.cert-status.done{ color:var(--accent); border:1px solid var(--accent); }
.cert-status.progress{ color:var(--accent-warm); border:1px solid var(--accent-warm); }

/* Only cards with a data-cert-img (an actual cert attached) get the "clickable" affordance */
.cert-card[data-cert-img]{ cursor:pointer; }
.cert-card[data-cert-img]:hover{ border-color:var(--accent); transform:translateY(-2px); }
.cert-card[data-cert-img]:focus-visible{ outline:2px solid var(--accent); outline-offset:3px; }

/* ---------- Certificate popup ---------- */
.lightbox{
  position:fixed; inset:0; z-index:1000;
  display:flex; align-items:center; justify-content:center;
  padding:24px;
  opacity:0; pointer-events:none;
  transition:opacity 0.2s ease;
}
.lightbox.open{ opacity:1; pointer-events:auto; }
.lightbox-backdrop{
  position:absolute; inset:0;
  background:rgba(6,10,20,0.85);
  backdrop-filter:blur(4px);
}
.lightbox-content{
  position:relative; z-index:1;
  width:min(900px, 92vw);
  background:var(--bg-raised);
  border:1px solid var(--line);
  border-radius:8px;
  padding:20px;
  transform:scale(0.96);
  transition:transform 0.2s ease;
}
.lightbox.open .lightbox-content{ transform:scale(1); }
.lightbox-image{
  width:100%;
  height:70vh;
  max-height:70vh;
  background-color:var(--bg);
  background-size:contain;
  background-repeat:no-repeat;
  background-position:center;
  border-radius:4px;
  border:1px solid var(--line);
  user-select:none;
  -webkit-user-drag:none;
}
.lightbox-close{
  position:absolute; top:-14px; right:-14px;
  width:32px; height:32px; border-radius:50%;
  background:var(--accent); color:#0B1220; border:none;
  font-family:var(--sans); font-size:1.2rem; line-height:1; cursor:pointer;
  display:flex; align-items:center; justify-content:center;
}
.lightbox-close:hover{ background:var(--accent-warm); }

/* ---------- Projects ---------- */

/* terminal / ls -al flourish */
.terminal{
  background:var(--bg-raised); border:1px solid var(--line); border-radius:8px;
  overflow:hidden; margin-bottom:32px;
}
.terminal-bar{
  display:flex; align-items:center; gap:8px;
  padding:10px 14px; border-bottom:1px solid var(--line);
  background:rgba(255,255,255,0.02);
}
.terminal-bar .dot{ width:10px; height:10px; border-radius:50%; display:inline-block; }
.terminal-bar .dot.red{ background:#FF5F56; }
.terminal-bar .dot.yellow{ background:#FFBD2E; }
.terminal-bar .dot.green{ background:#27C93F; }
.terminal-title{
  margin-left:8px; font-family:var(--mono); font-size:0.75rem; color:var(--text-dim);
}
.terminal-body{ padding:18px 20px; font-family:var(--mono); font-size:0.85rem; }
.terminal-cmd{ color:var(--text); margin-bottom:10px; }
.terminal-cmd .prompt{ color:var(--accent); }
.terminal-cmd .path{ color:var(--accent-warm); margin:0 8px; }
.terminal-cmd .cmd{ color:var(--text); }
.terminal-row{ color:var(--text-dim); padding:2px 0; }
.terminal-row .perm{ color:var(--text-dim); }
.terminal-row .ls-meta{ color:var(--text-dim); margin:0 10px; }
.terminal-row .ls-name{ color:var(--accent); }

.project-grid{
  display:grid; grid-template-columns:repeat(2, 1fr); gap:28px;
}
.project-card{
  background:var(--bg-raised); border:1px solid var(--line); border-radius:6px;
  padding:28px; display:flex; flex-direction:column; gap:14px;
  transition:border-color 0.2s ease, transform 0.2s ease;
  cursor:pointer;
}
.project-card:focus-visible{ outline:2px solid var(--accent); outline-offset:3px; }
.project-card:hover{ border-color:var(--accent); transform:translateY(-4px); }
.project-num{ font-family:var(--mono); color:var(--text-dim); font-size:0.8rem; }
.project-card h3{ font-family:var(--mono); font-size:1.2rem; }
.project-card p{ color:var(--text-dim); font-size:0.95rem; }
.project-tags{ display:flex; flex-wrap:wrap; gap:8px; margin-top:auto; }
.project-tags span{
  font-family:var(--mono); font-size:0.7rem; color:var(--accent);
  border:1px solid var(--line); padding:4px 9px; border-radius:4px;
}
.project-links{ display:flex; gap:16px; margin-top:8px; }
.project-links a{ font-family:var(--mono); font-size:0.8rem; color:var(--accent-warm); }
.project-links a:hover{ text-decoration:underline; }

/* ---------- Contact ---------- */
.contact{ border-bottom:none; }
.contact-inner{
  display:grid; grid-template-columns:1fr 1fr; gap:48px; align-items:start;
}
.contact-info h2{ font-family:var(--mono); font-size:clamp(1.6rem, 4vw, 2.6rem); max-width:none; margin-bottom:28px; }
.contact-links{ display:flex; flex-direction:column; gap:10px; }
.contact-links a{
  font-family:var(--mono); font-size:1rem; color:var(--text-dim);
  display:flex; align-items:center; gap:10px;
}
.contact-links a:hover{ color:var(--accent-warm); }
.contact-links a::before{ content:'→'; color:var(--accent); }

.contact-form{
  background:var(--bg-raised); border:1px solid var(--line); border-radius:8px;
  padding:28px; display:flex; flex-direction:column; gap:20px;
}
.form-row{ display:flex; flex-direction:column; gap:8px; }
.form-row label{
  font-family:var(--mono); font-size:0.75rem; color:var(--text-dim); letter-spacing:0.03em;
  text-transform:uppercase;
}
.form-row label .req{ color:var(--accent-warm); }
.form-row input, .form-row textarea{
  font-family:var(--sans); font-size:0.95rem; color:var(--text);
  background:var(--bg); border:1px solid var(--line); border-radius:4px;
  padding:12px 14px; resize:vertical;
  transition:border-color 0.2s ease;
}
.form-row input:focus, .form-row textarea:focus{ outline:none; border-color:var(--accent); }
.form-row textarea{ min-height:120px; }
.hp-field{ position:absolute; left:-9999px; opacity:0; pointer-events:none; }
.form-footer{ display:flex; align-items:center; justify-content:space-between; gap:16px; flex-wrap:wrap; }
.form-note{ font-family:var(--mono); font-size:0.75rem; color:var(--text-dim); }
.form-status{ font-family:var(--mono); font-size:0.8rem; min-height:1em; }
.form-status.success{ color:var(--accent); }
.form-status.error{ color:var(--accent-warm); }

footer{ padding:28px 0; text-align:center; }
footer p{ font-family:var(--mono); font-size:0.75rem; color:var(--text-dim); }

/* ---------- Tablet ---------- */
@media (max-width: 900px){
  .about-grid{ grid-template-columns:1fr; gap:32px; }
  .hero{ gap:32px; }
  .project-grid{ grid-template-columns:1fr; }
  .contact-inner{ grid-template-columns:1fr; }
}

/* ---------- Mobile ---------- */
@media (max-width: 760px){
  nav.primary-nav{
    position:fixed; top:73px; left:0; right:0; bottom:0;
    background:var(--bg);
    transform:translateX(100%);
    transition:transform 0.3s ease;
    padding:40px 24px;
  }
  nav.primary-nav.open{ transform:translateX(0); }
  nav.primary-nav ul{ flex-direction:column; gap:28px; }
  nav.primary-nav a{ font-size:1.1rem; }
  .nav-toggle{ display:block; }

  .hero{ padding:70px 0 60px; flex-direction:column-reverse; text-align:left; }
  .hero-photo{ width:180px; height:180px; }
  section{ padding:60px 0; }
  .about-grid{ grid-template-columns:1fr; }
  .project-grid{ grid-template-columns:1fr; }
  .terminal-body{ font-size:0.75rem; padding:16px; }
  .contact-inner{ flex-direction:column; align-items:flex-start; }
  .contact-info h2{ white-space:normal; }
}

/* ---------- Small phones ---------- */
@media (max-width: 420px){
  .wrap{ padding:0 16px; }
  .nav-inner{ padding:16px; }
  .site-heading{ font-size:1.1rem; }
  h1{ font-size:clamp(1.7rem, 9vw, 2.4rem); }
  .hero-sub{ font-size:1rem; }
  .hero-photo{ width:130px; height:130px; }
  .btn{ padding:11px 18px; font-size:0.8rem; }
  section{ padding:48px 0; }
  .about-card, .project-card, .cert-card, .concept-card, .contact-form{ padding:20px; }
  .chip{ padding:8px 14px; font-size:0.8rem; }
  .terminal-body{ font-size:0.7rem; padding:14px; }
  .terminal-row .ls-meta{ display:none; }
  .lightbox{ padding:14px; }
  .lightbox-content{ padding:14px; }
  .lightbox-image{ height:50vh; max-height:50vh; }
  .lightbox-close{ top:-10px; right:-10px; width:28px; height:28px; }
}