/* =========================================================
   Rahul Dwivedi — Portfolio
   Theme: "REST API Console" — built around the vocabulary
   of the subject: routes, status codes, JSON responses.
   ========================================================= */

:root{
  --ink: #0b1220;
  --panel: #121b29;
  --panel-2: #172234;
  --border: #253345;
  --border-soft: #1c2837;
  --text: #e7ecf2;
  --muted: #8695a7;
  --muted-2: #5c6b7d;
  --accent: #5eead4;
  --accent-dim: rgba(94,234,212,0.14);
  --accent-2: #f5a623;
  --danger: #ff6b6b;

  --font-mono: 'JetBrains Mono', 'Courier New', monospace;
  --font-body: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;

  --radius: 10px;
  --radius-lg: 16px;
  --maxw: 1180px;
}

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

html{ scroll-behavior:smooth; }

body{
  background:var(--ink);
  color:var(--text);
  font-family:var(--font-body);
  line-height:1.6;
  overflow-x:hidden;
}

@media (prefers-reduced-motion: reduce){
  html{ scroll-behavior:auto; }
  *{ animation-duration:0.001ms !important; animation-iteration-count:1 !important; transition-duration:0.001ms !important; }
}

a{ text-decoration:none; color:inherit; }
ul{ list-style:none; }
img{ max-width:100%; display:block; }
section{ padding:96px 8vw; }

::selection{ background:var(--accent-dim); color:var(--accent); }

:focus-visible{
  outline:2px solid var(--accent);
  outline-offset:3px;
  border-radius:4px;
}

/* Faint dot-grid backdrop, like a schema canvas */
body::before{
  content:"";
  position:fixed;
  inset:0;
  background-image:radial-gradient(circle, rgba(255,255,255,0.035) 1px, transparent 1px);
  background-size:26px 26px;
  pointer-events:none;
  z-index:0;
}

/* ---------- Route tag (recurring signature label) ---------- */
.route-tag{
  display:inline-flex;
  align-items:center;
  gap:8px;
  font-family:var(--font-mono);
  font-size:0.78rem;
  font-weight:500;
  letter-spacing:0.02em;
  color:var(--accent);
  background:var(--accent-dim);
  border:1px solid rgba(94,234,212,0.25);
  padding:5px 12px 5px 10px;
  border-radius:999px;
  margin-bottom:20px;
}
.route-tag .dot{
  width:6px; height:6px; border-radius:50%;
  background:var(--accent);
  box-shadow:0 0 0 3px var(--accent-dim);
}
.route-tag.centered{ display:flex; width:fit-content; margin-left:auto; margin-right:auto; }

/* ---------- Header ---------- */
.header{
  position:fixed;
  top:0; left:0; right:0;
  z-index:100;
  display:flex;
  align-items:center;
  justify-content:space-between;
  padding:18px 8vw;
  background:rgba(11,18,32,0.82);
  backdrop-filter:blur(10px);
  border-bottom:1px solid var(--border-soft);
}
.logo{
  font-family:var(--font-mono);
  font-weight:700;
  font-size:1.2rem;
  color:var(--text);
}
.logo-dot{ color:var(--accent); }
.logo-tag{
  font-size:0.65rem;
  color:var(--muted-2);
  border:1px solid var(--border);
  padding:2px 6px;
  border-radius:4px;
  margin-left:6px;
  vertical-align:middle;
}
.navbar{
  display:flex;
  gap:6px;
}
.navbar a{
  font-family:var(--font-mono);
  font-size:0.82rem;
  color:var(--muted);
  padding:8px 12px;
  border-radius:6px;
  transition:color .2s ease, background .2s ease;
}
.navbar a:hover{ color:var(--text); background:var(--panel-2); }
.navbar a.active{ color:var(--accent); background:var(--accent-dim); }

.nav-toggle{
  display:none;
  flex-direction:column;
  justify-content:center;
  gap:5px;
  width:36px; height:36px;
  background:none;
  border:1px solid var(--border);
  border-radius:6px;
  cursor:pointer;
}
.nav-toggle span{
  width:16px; height:2px; margin:0 auto;
  background:var(--text);
  transition:transform .25s ease, opacity .25s ease;
}
.nav-toggle.active span:nth-child(1){ transform:translateY(7px) rotate(45deg); }
.nav-toggle.active span:nth-child(2){ opacity:0; }
.nav-toggle.active span:nth-child(3){ transform:translateY(-7px) rotate(-45deg); }

/* ---------- Home ---------- */
.home{
  min-height:100vh;
  display:flex;
  align-items:center;
  justify-content:space-between;
  gap:48px;
  padding-top:140px;
  position:relative;
  z-index:1;
}
.home-content{ max-width:620px; }

.json-card{
  background:var(--panel);
  border:1px solid var(--border);
  border-radius:var(--radius-lg);
  overflow:hidden;
  box-shadow:0 30px 60px -20px rgba(0,0,0,0.5);
  margin-bottom:24px;
}
.json-card-bar{
  display:flex;
  align-items:center;
  gap:7px;
  padding:10px 14px;
  background:var(--panel-2);
  border-bottom:1px solid var(--border);
}
.json-dot{ width:9px; height:9px; border-radius:50%; }
.json-dot.red{ background:#ff5f57; }
.json-dot.yellow{ background:#febc2e; }
.json-dot.green{ background:#28c840; }
.json-card-title{
  font-family:var(--font-mono);
  font-size:0.72rem;
  color:var(--muted-2);
  margin-left:8px;
}
.json-body{
  font-family:var(--font-mono);
  font-size:0.88rem;
  padding:20px 22px;
  color:var(--muted);
  white-space:pre;
  overflow-x:auto;
}
.json-key{ color:#89b4fa; }
.json-string{ color:var(--accent-2); }
.json-bool{ color:var(--accent); }
.typing-animation{ border-right:2px solid var(--accent); padding-right:2px; }

.home-desc{
  color:var(--muted);
  font-size:1rem;
  max-width:540px;
  margin-bottom:26px;
}

.social-links{ display:flex; gap:12px; margin-bottom:30px; }
.social-links a{
  width:40px; height:40px;
  display:flex; align-items:center; justify-content:center;
  border:1px solid var(--border);
  border-radius:8px;
  color:var(--muted);
  transition:all .2s ease;
}
.social-links a:hover{ color:var(--accent); border-color:var(--accent); transform:translateY(-3px); }

.cta-buttons{ display:flex; gap:14px; flex-wrap:wrap; }
.btn{
  font-family:var(--font-mono);
  font-size:0.85rem;
  font-weight:600;
  padding:13px 24px;
  border-radius:8px;
  background:var(--accent);
  color:#04241f;
  border:1px solid var(--accent);
  display:inline-flex;
  align-items:center;
  gap:8px;
  cursor:pointer;
  transition:transform .2s ease, box-shadow .2s ease, background .2s ease;
}
.btn:hover{ transform:translateY(-2px); box-shadow:0 12px 24px -10px rgba(94,234,212,0.45); }
.btn-secondary{
  background:transparent;
  color:var(--text);
  border:1px solid var(--border);
}
.btn-secondary:hover{ border-color:var(--accent); color:var(--accent); box-shadow:none; }

.home-image{
  width:320px; height:320px;
  border-radius:50%;
  overflow:hidden;
  border:1px solid var(--border);
  background:var(--panel);
  flex-shrink:0;
  position:relative;
}
.home-image::after{
  content:"";
  position:absolute; inset:-1px;
  border-radius:50%;
  border:1px dashed rgba(94,234,212,0.35);
  animation:spin 24s linear infinite;
}
.home-image img{ width:100%; height:100%; object-fit:cover; object-position:top center; }

@keyframes spin{ to{ transform:rotate(360deg); } }

/* ---------- About ---------- */
.about{
  display:flex;
  align-items:center;
  gap:64px;
  position:relative; z-index:1;
}
.about-image{
  width:280px; height:340px;
  border-radius:var(--radius-lg);
  overflow:hidden;
  border:1px solid var(--border);
  flex-shrink:0;
}
.about-image img{ width:100%; height:100%; object-fit:cover; object-position:top center; }
.about-content h2{
  font-family:var(--font-mono);
  font-size:2.2rem;
  margin-bottom:6px;
}
.about-content h2 span{ color:var(--accent); }
.about-content h3{
  color:var(--muted);
  font-weight:500;
  font-size:1.05rem;
  margin-bottom:18px;
}
.about-content p{ color:var(--muted); margin-bottom:26px; max-width:560px; }

/* ---------- Section headings ---------- */
.heading{
  font-family:var(--font-mono);
  text-align:center;
  font-size:2.1rem;
  margin-bottom:52px;
}
.heading span{ color:var(--accent); }

/* ---------- Education & Experience shared card look ---------- */
.education-container, .experience-container{
  max-width:var(--maxw);
  margin:0 auto;
  display:grid;
  gap:22px;
}
.edu-card, .exp-card{
  background:var(--panel);
  border:1px solid var(--border);
  border-left:2px solid var(--accent);
  border-radius:var(--radius);
  padding:26px 28px;
  transition:transform .2s ease, border-color .2s ease;
}
.edu-card:hover, .exp-card:hover{ transform:translateY(-3px); border-color:var(--accent); }
.edu-header, .exp-header{
  display:flex;
  justify-content:space-between;
  align-items:baseline;
  flex-wrap:wrap;
  gap:8px;
  margin-bottom:8px;
}
.edu-header h3, .exp-header h3{ font-size:1.08rem; }
.edu-year, .exp-duration{
  font-family:var(--font-mono);
  font-size:0.75rem;
  color:var(--accent-2);
  background:rgba(245,166,35,0.12);
  padding:3px 10px;
  border-radius:999px;
  white-space:nowrap;
}
.edu-institution, .exp-company{
  color:var(--muted);
  font-size:0.92rem;
  margin-bottom:6px;
}
.edu-details{ color:var(--accent); font-size:0.88rem; margin-bottom:8px; }
.edu-description{ color:var(--muted); font-size:0.92rem; }
.exp-responsibilities li{
  color:var(--muted);
  font-size:0.92rem;
  padding-left:18px;
  position:relative;
  margin-top:6px;
}
.exp-responsibilities li::before{
  content:"›";
  position:absolute; left:0; color:var(--accent);
  font-family:var(--font-mono);
}

/* ---------- Certifications ---------- */
.certifications-container{
  max-width:var(--maxw);
  margin:0 auto;
  display:grid;
  grid-template-columns:repeat(auto-fit, minmax(230px, 1fr));
  gap:20px;
}
.cert-card{
  background:var(--panel);
  border:1px solid var(--border);
  border-radius:var(--radius);
  padding:28px 22px;
  text-align:center;
  transition:transform .2s ease, border-color .2s ease;
}
.cert-card:hover{ transform:translateY(-4px); border-color:var(--accent); }
.cert-card i{ font-size:1.6rem; color:var(--accent); margin-bottom:14px; }
.cert-card h3{ font-size:0.98rem; margin-bottom:6px; }
.cert-card p{ color:var(--muted); font-size:0.86rem; }
.cert-date{
  font-family:var(--font-mono);
  color:var(--accent-2) !important;
  font-size:0.78rem !important;
  margin-top:6px;
}

/* ---------- Skills ---------- */
.skills-container{
  max-width:var(--maxw);
  margin:0 auto;
  display:grid;
  grid-template-columns:1.1fr 0.9fr;
  gap:56px;
}
.technical-skills h3, .professional-skills h3{
  font-family:var(--font-mono);
  font-size:1.1rem;
  margin-bottom:26px;
  color:var(--accent);
}
.skill{ margin-bottom:20px; }
.skill p{ font-size:0.9rem; margin-bottom:8px; color:var(--text); }
.progress{
  height:8px;
  background:var(--panel-2);
  border:1px solid var(--border);
  border-radius:999px;
  overflow:hidden;
}
.progress-done{
  height:100%;
  width:0;
  border-radius:999px;
  background:linear-gradient(90deg, var(--accent), #89b4fa);
  transition:width 1.2s cubic-bezier(.16,1,.3,1);
  position:relative;
}
.progress-done::after{
  content:attr(data-done) "%";
  position:absolute;
  right:0; top:-22px;
  font-family:var(--font-mono);
  font-size:0.72rem;
  color:var(--muted);
}

.circular-skills{
  display:grid;
  grid-template-columns:repeat(2, 1fr);
  gap:26px;
}
.circle{
  --p:0;
  width:120px; height:120px;
  border-radius:50%;
  margin:0 auto 10px;
  display:flex; align-items:center; justify-content:center;
  background:conic-gradient(var(--accent) calc(var(--p) * 1%), var(--panel-2) 0);
  transition:background 1.4s cubic-bezier(.16,1,.3,1);
  position:relative;
}
.circle .inner-circle{
  width:92px; height:92px;
  border-radius:50%;
  background:var(--ink);
  display:flex; align-items:center; justify-content:center;
  font-family:var(--font-mono);
  font-weight:600;
  font-size:1rem;
  color:var(--text);
}
.circle p{
  text-align:center;
  font-size:0.82rem;
  color:var(--muted);
}

/* ---------- Projects ---------- */
.projects-container{
  max-width:var(--maxw);
  margin:0 auto;
  display:grid;
  grid-template-columns:repeat(auto-fit, minmax(320px, 1fr));
  gap:26px;
}
.project-card{
  background:var(--panel);
  border:1px solid var(--border);
  border-radius:var(--radius-lg);
  overflow:hidden;
  transition:transform .25s ease, border-color .25s ease;
}
.project-card:hover{ transform:translateY(-5px); border-color:var(--accent); }
.project-card img{ width:100%; height:240px; object-fit:cover; object-position:center; background:var(--panel-2); display:block; }
.project-content{ padding:22px; }
.project-content h3{ font-size:1.05rem; margin-bottom:10px; }
.project-content > p{ color:var(--muted); font-size:0.88rem; margin-bottom:16px; }
.project-tech{ display:flex; flex-wrap:wrap; gap:8px; margin-bottom:18px; }
.project-tech span{
  font-family:var(--font-mono);
  font-size:0.7rem;
  color:var(--accent);
  background:var(--accent-dim);
  border:1px solid rgba(94,234,212,0.25);
  padding:4px 9px;
  border-radius:999px;
}
.project-links{ display:flex; gap:18px; }
.project-links a{
  font-family:var(--font-mono);
  font-size:0.82rem;
  color:var(--muted);
  display:flex; align-items:center; gap:6px;
  transition:color .2s ease;
}
.project-links a:hover{ color:var(--accent); }
.link-disabled{
  font-family:var(--font-mono);
  font-size:0.82rem;
  color:var(--muted-2);
  display:flex; align-items:center; gap:6px;
}

/* ---------- Contact ---------- */
.contact-container{
  max-width:var(--maxw);
  margin:0 auto;
  display:grid;
  grid-template-columns:0.9fr 1.1fr;
  gap:56px;
}
.contact-info h3{ font-family:var(--font-mono); font-size:1.3rem; margin-bottom:16px; }
.contact-info > p{ color:var(--muted); margin-bottom:20px; max-width:420px; }
.contact-info p i{ color:var(--accent); width:20px; }
.contact-info p{ margin-bottom:10px; font-size:0.92rem; }

.contact-form{ display:flex; flex-direction:column; gap:14px; }
.contact-form input, .contact-form textarea{
  background:var(--panel);
  border:1px solid var(--border);
  border-radius:8px;
  padding:13px 16px;
  color:var(--text);
  font-family:var(--font-body);
  font-size:0.92rem;
  resize:vertical;
}
.contact-form input:focus, .contact-form textarea:focus{
  outline:none;
  border-color:var(--accent);
}
.contact-form input::placeholder, .contact-form textarea::placeholder{ color:var(--muted-2); }
.contact-form .btn{ align-self:flex-start; border:1px solid var(--accent); }
.form-status{
  font-family:var(--font-mono);
  font-size:0.82rem;
  color:var(--accent);
  min-height:1.2em;
}

/* ---------- Footer ---------- */
.footer{
  border-top:1px solid var(--border-soft);
  padding:64px 8vw 28px;
  position:relative; z-index:1;
}
.footer-content{
  max-width:var(--maxw);
  margin:0 auto;
  display:grid;
  grid-template-columns:1.4fr 1fr 1fr 1.2fr;
  gap:36px;
  margin-bottom:40px;
}
.footer-section h3{ font-family:var(--font-mono); margin-bottom:10px; }
.footer-section h4{ font-family:var(--font-mono); font-size:0.9rem; color:var(--accent); margin-bottom:14px; }
.footer-section p{ color:var(--muted); font-size:0.88rem; margin-bottom:6px; }
.footer-section ul li{ margin-bottom:8px; }
.footer-section ul li a{ color:var(--muted); font-size:0.88rem; transition:color .2s ease; }
.footer-section ul li a:hover{ color:var(--accent); }
.footer-social{ display:flex; gap:10px; }
.footer-social a{
  width:34px; height:34px;
  display:flex; align-items:center; justify-content:center;
  border:1px solid var(--border);
  border-radius:7px;
  color:var(--muted);
  transition:all .2s ease;
}
.footer-social a:hover{ color:var(--accent); border-color:var(--accent); }
.footer-bottom{
  max-width:var(--maxw);
  margin:0 auto;
  padding-top:22px;
  border-top:1px solid var(--border-soft);
  display:flex;
  justify-content:space-between;
  flex-wrap:wrap;
  gap:8px;
  color:var(--muted-2);
  font-size:0.8rem;
}
.footer-bottom i{ color:var(--danger); }

/* ---------- Reveal-on-scroll ---------- */
.reveal{ opacity:0; transform:translateY(24px); transition:opacity .7s ease, transform .7s ease; }
.reveal.in{ opacity:1; transform:translateY(0); }

/* ---------- Responsive ---------- */
@media (max-width: 980px){
  .about{ flex-direction:column; text-align:center; }
  .about-content p{ margin-left:auto; margin-right:auto; }
  .skills-container, .contact-container{ grid-template-columns:1fr; }
  .footer-content{ grid-template-columns:1fr 1fr; }
}

@media (max-width: 860px){
  .navbar{
    position:fixed;
    top:64px; right:8vw;
    flex-direction:column;
    background:var(--panel);
    border:1px solid var(--border);
    border-radius:var(--radius);
    padding:10px;
    gap:2px;
    transform:translateY(-12px);
    opacity:0;
    pointer-events:none;
    transition:all .2s ease;
    max-height:calc(100vh - 90px);
    overflow-y:auto;
  }
  .navbar.active{ transform:translateY(0); opacity:1; pointer-events:auto; }
  .nav-toggle{ display:flex; }
  .home{ flex-direction:column-reverse; text-align:center; padding-top:120px; }
  .home-content{ max-width:100%; }
  .home-image{ width:220px; height:220px; }
  .json-card{ text-align:left; }
  .json-body{ font-size:0.78rem; }
  .social-links, .cta-buttons{ justify-content:center; }
  section{ padding:72px 6vw; }
  .about-image{ width:220px; height:270px; margin:0 auto; }
  .projects-container{ grid-template-columns:1fr; }
  .certifications-container{ grid-template-columns:repeat(auto-fit, minmax(200px, 1fr)); }
  .edu-header, .exp-header{ flex-direction:column; align-items:flex-start; }
}

@media (max-width: 560px){
  html{ font-size:15px; }
  section{ padding:60px 5vw; }
  .footer-content{ grid-template-columns:1fr; }
  .heading{ font-size:1.5rem; margin-bottom:38px; }
  .about-content h2{ font-size:1.6rem; }
  .home-image{ width:170px; height:170px; }
  .json-body{ font-size:0.68rem; padding:16px; }
  .json-card-title{ display:none; }
  .route-tag{ font-size:0.7rem; }
  .btn{ font-size:0.78rem; padding:12px 18px; width:100%; justify-content:center; }
  .cta-buttons{ flex-direction:column; width:100%; }
  .circular-skills{ grid-template-columns:repeat(2, minmax(0,1fr)); gap:16px; }
  .circle{ width:100px; height:100px; }
  .circle .inner-circle{ width:78px; height:78px; font-size:0.88rem; }
  .contact-form .btn{ width:100%; }
  .footer-bottom{ flex-direction:column; text-align:center; }
}

@media (max-width: 400px){
  .logo-tag{ display:none; }
  .header{ padding:16px 5vw; }
}