*{box-sizing:border-box;margin:0;padding:0}
:root{
  --bg:#07111f;
  --panel:#0d1a2b;
  --panel2:#122238;
  --text:#f7f9ff;
  --muted:#a9b7ca;
  --blue:#3b82f6;
  --cyan:#22d3ee;
  --green:#34d399;
  --gold:#facc15;
  --border:rgba(255,255,255,.13);
  --shadow:0 20px 50px rgba(0,0,0,.32);
}
.light{
  --bg:#f5f7fb;
  --panel:#fff;
  --panel2:#edf3ff;
  --text:#111827;
  --muted:#526071;
  --border:rgba(17,24,39,.13);
  --shadow:0 18px 40px rgba(31,41,55,.12);
}
html{scroll-behavior:smooth}
body{
  min-height:100vh;
  font-family:Inter,Arial,sans-serif;
  background:
    radial-gradient(circle at top left,rgba(34,211,238,.18),transparent 32%),
    radial-gradient(circle at 80% 10%,rgba(59,130,246,.18),transparent 30%),
    var(--bg);
  color:var(--text);
  line-height:1.6;
}
body.light{background:linear-gradient(180deg,#f8fbff 0,#eef4fb 100%)}
a{text-decoration:none;color:inherit}
img{max-width:100%;display:block}
.container,.navbar,.footer{width:min(1120px,92%);margin:auto}
.navbar{
  min-height:72px;
  margin-top:24px;
  background:color-mix(in srgb,var(--panel) 86%,transparent);
  border:1px solid var(--border);
  border-radius:8px;
  display:flex;
  align-items:center;
  gap:18px;
  padding:0 24px;
  position:sticky;
  top:14px;
  z-index:20;
  backdrop-filter:blur(14px);
  box-shadow:var(--shadow);
}
.logo{font-size:23px;font-weight:800;margin-right:auto;white-space:nowrap}
.logo i{margin-right:10px;color:var(--cyan)}
.logo span,.hello,h2 span,.page-header p{color:var(--cyan)}
nav{display:flex;gap:28px}
nav a{color:var(--muted);font-size:14px;padding:24px 0;border-bottom:2px solid transparent}
nav a.active,nav a:hover{color:var(--text);border-bottom-color:var(--cyan)}
.icon-btn{border:0;background:transparent;color:var(--text);font-size:18px;cursor:pointer}
#themeBtn,#menuBtn,#topBtn{width:42px;height:42px;border-radius:8px;display:grid;place-items:center;border:1px solid var(--border);background:rgba(255,255,255,.04)}
#menuBtn{display:none}
.activity-bar{
  margin-top:18px;
  border:1px solid rgba(34,211,238,.35);
  border-radius:8px;
  background:linear-gradient(90deg,rgba(34,211,238,.12),rgba(52,211,153,.09));
  padding:15px 20px;
  display:flex;
  gap:20px;
  flex-wrap:wrap;
  color:var(--muted);
  font-size:14px;
}
.activity-bar span{width:1px;background:var(--border)}
.page-box,.single-page{
  border:1px solid var(--border);
  background:color-mix(in srgb,var(--panel) 55%,transparent);
  margin-top:18px;
  border-radius:8px;
  overflow:hidden;
  box-shadow:var(--shadow);
}
.hero{
  min-height:520px;
  padding:54px;
  display:grid;
  grid-template-columns:1.05fr .95fr;
  gap:36px;
  align-items:center;
}
.hello{font-size:18px;font-weight:700}
.hero h1{font-size:clamp(42px,6vw,68px);line-height:1.02;margin:8px 0}
.hero h3{color:var(--green);font-size:20px;margin-bottom:16px}
.hero p{color:var(--muted);max-width:560px}
.buttons{display:flex;gap:14px;margin:30px 0;flex-wrap:wrap}
.btn{
  border:1px solid var(--border);
  padding:12px 20px;
  border-radius:7px;
  font-weight:800;
  display:inline-flex;
  align-items:center;
  justify-content:center;
  gap:10px;
  transition:.22s ease;
}
.primary{background:var(--blue);border-color:var(--blue);color:white}
.btn:hover,.project-card:hover,.skill:hover,.stat-box:hover{transform:translateY(-4px);box-shadow:var(--shadow)}
.socials,.footer-icons{display:flex;gap:13px;flex-wrap:wrap}
.socials a,.footer-icons a{
  width:44px;
  height:44px;
  border-radius:50%;
  border:1px solid var(--border);
  display:grid;
  place-items:center;
  background:rgba(255,255,255,.04);
  font-weight:800;
}
.profile-card{justify-self:center;width:min(390px,100%)}
.profile-circle{
  aspect-ratio:1;
  border-radius:30px;
  border:1px solid rgba(34,211,238,.35);
  padding:14px;
  background:linear-gradient(145deg,rgba(34,211,238,.12),rgba(52,211,153,.08));
}
.profile-circle img{width:100%;height:100%;object-fit:cover;object-position:center top;border-radius:22px;background:white}
.profile-note{
  margin-top:14px;
  border:1px solid var(--border);
  border-radius:8px;
  background:var(--panel);
  padding:14px 16px;
  display:flex;
  justify-content:space-between;
  gap:16px;
  color:var(--muted);
  font-size:14px;
}
.profile-note strong{color:var(--text)}
.section{border-top:1px solid var(--border);padding:34px}
.section-kicker{color:var(--muted);font-size:13px;font-weight:800;letter-spacing:0;text-transform:uppercase}
.skills-grid{display:grid;grid-template-columns:repeat(8,1fr);gap:14px;margin-top:22px}
.skill{
  min-height:124px;
  border:1px solid var(--border);
  background:var(--panel);
  border-radius:8px;
  display:grid;
  place-items:center;
  text-align:center;
  padding:14px;
  transition:.22s ease;
}
.skill i{font-size:42px}
.skill b{font-size:14px;line-height:1.3}
.html{color:#ff5722}.css{color:#2196f3}.js{color:#f7df1e}.c{color:#68a2ff}.py{color:#ffd43b}.algo{color:#4ade80}.responsive{color:#c084fc}
.section-title{display:flex;justify-content:space-between;align-items:center;gap:20px;margin-bottom:20px}
.section-title a{color:var(--cyan);font-weight:800}
.cards{display:grid;gap:20px}
.three{grid-template-columns:repeat(3,1fr)}
.two{grid-template-columns:repeat(2,1fr)}
.project-card{
  background:var(--panel);
  border:1px solid var(--border);
  border-radius:8px;
  overflow:hidden;
  transition:.22s ease;
}
.github-message{
  grid-column:1/-1;
  border:1px solid var(--border);
  border-radius:8px;
  background:var(--panel);
  color:var(--muted);
  padding:22px;
  text-align:center;
}
.project-card.is-hidden{display:none}
.project-card img{width:100%;height:170px;object-fit:cover}
.card-body{padding:18px}
.tag{
  display:inline-flex;
  border:1px solid rgba(34,211,238,.35);
  color:var(--cyan);
  border-radius:999px;
  padding:4px 10px;
  font-size:12px;
  font-weight:800;
  margin-bottom:10px;
}
.project-card h3{font-size:20px}
.project-card p{color:var(--muted);font-size:14px;margin:8px 0 16px}
.project-meta{display:flex;gap:12px;flex-wrap:wrap;color:var(--muted);font-size:12px;margin-bottom:16px}
.project-meta span{display:inline-flex;align-items:center;gap:5px}
.card-actions{display:flex;gap:10px;flex-wrap:wrap}
.card-actions a{border:1px solid var(--border);border-radius:7px;padding:8px 12px;font-size:13px;color:var(--muted);font-weight:700}
.card-actions a:hover{color:var(--text);border-color:var(--cyan)}
.codeforces-card{
  border:1px solid rgba(34,211,238,.32);
  border-radius:8px;
  background:linear-gradient(135deg,rgba(34,211,238,.09),rgba(52,211,153,.06)),var(--panel);
  padding:24px;
  display:grid;
  grid-template-columns:.82fr 1.18fr;
  gap:24px;
}
.codeforces-profile{display:flex;align-items:center;gap:18px;min-width:0}
.codeforces-profile img{
  width:96px;
  height:96px;
  border-radius:8px;
  border:1px solid var(--border);
  object-fit:cover;
  background:var(--panel2);
}
.codeforces-profile h3{font-size:clamp(24px,3vw,34px);line-height:1.12;margin:6px 0}
.codeforces-profile p{color:var(--muted)}
.codeforces-profile strong{color:var(--green)}
.codeforces-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:12px}
.cf-stat{
  min-height:92px;
  border:1px solid var(--border);
  border-radius:8px;
  background:color-mix(in srgb,var(--panel2) 78%,transparent);
  padding:14px;
  display:flex;
  flex-direction:column;
  justify-content:space-between;
}
.cf-stat span,.codeforces-status{color:var(--muted);font-size:13px}
.cf-stat strong{font-size:25px;line-height:1.1}
.codeforces-status{grid-column:1/-1;margin-top:-4px}
.stats{display:grid;grid-template-columns:1fr 1fr;gap:20px}
.stat-box{background:var(--panel);border:1px solid var(--border);border-radius:8px;padding:24px;transition:.22s ease}
.stat-box h3{color:var(--cyan);margin-bottom:20px}
.stat-numbers{display:flex;justify-content:space-between;gap:18px}
.stat-numbers strong{display:block;font-size:32px}
.gold{color:var(--gold)}
.stat-numbers small,.stat-box p,.activity-list small{color:var(--muted);font-size:13px}
.activity-list{list-style:none}
.activity-list li{display:flex;justify-content:space-between;gap:14px;padding:8px 0;border-bottom:1px solid var(--border)}
.about-preview{display:grid;grid-template-columns:90px 1fr auto;align-items:center;gap:24px}
.avatar,.mail-icon{width:78px;height:78px;border-radius:50%;border:1px solid var(--border);background:var(--panel);display:grid;place-items:center;font-size:32px;color:var(--cyan)}
.about-preview p{color:var(--muted)}
.contact-strip{
  margin-top:24px;
  border:1px solid var(--border);
  border-radius:8px;
  background:linear-gradient(90deg,rgba(59,130,246,.55),rgba(52,211,153,.42));
  padding:30px;
  display:grid;
  grid-template-columns:90px 1fr auto;
  align-items:center;
  gap:25px;
}
.footer{
  margin-top:24px;
  margin-bottom:35px;
  background:color-mix(in srgb,var(--panel) 86%,transparent);
  border:1px solid var(--border);
  border-radius:8px;
  padding:26px;
  display:flex;
  justify-content:space-between;
  align-items:center;
  gap:20px;
}
.footer p{color:var(--muted)}
.single-page{padding:30px}
.page-header{text-align:center;padding:18px 10px 32px}
.page-header h1{font-size:clamp(34px,5vw,52px);line-height:1.1;margin-top:6px}
.filters{margin-top:22px;display:flex;justify-content:center;gap:12px;flex-wrap:wrap}
.filter{
  background:var(--panel);
  border:1px solid var(--border);
  color:var(--text);
  border-radius:7px;
  padding:10px 16px;
  font-weight:800;
  cursor:pointer;
}
.filter.active,.filter:hover{background:var(--blue);border-color:var(--blue);color:white}
.about-grid{display:grid;grid-template-columns:1fr 330px;gap:42px;align-items:center;padding:8px 12px 30px}
.about-text p,.about-text li{color:var(--muted);margin-bottom:10px}
.about-text h3{margin:20px 0 10px}
.about-text ul{padding-left:20px;margin:12px 0 24px}
.about-photo{border:1px solid rgba(34,211,238,.35);border-radius:8px;overflow:hidden;background:white}
.about-photo img{width:100%;height:420px;object-fit:cover;object-position:center top}
.info-grid{display:grid;grid-template-columns:repeat(5,1fr);gap:12px}
.info-grid div{border:1px solid var(--border);background:var(--panel);border-radius:8px;padding:18px;text-align:center}
.info-grid span{display:block;color:var(--muted);margin-top:8px}
.project-list{padding:8px}
.contact-grid{display:grid;grid-template-columns:.9fr 1.1fr;gap:40px;padding:8px 12px}
.contact-info{display:grid;gap:14px;align-content:start}
.contact-info a{display:grid;grid-template-columns:46px 1fr;gap:2px 12px;align-items:center;border:1px solid var(--border);background:var(--panel);border-radius:8px;padding:15px}
.contact-info i{grid-row:1/3;width:42px;height:42px;border-radius:50%;display:grid;place-items:center;background:var(--panel2);border:1px solid var(--border);color:var(--cyan)}
.contact-info span{color:var(--muted)}
.contact-form{display:grid;gap:13px}
.contact-form label{display:grid;gap:6px;color:var(--muted);font-size:14px;font-weight:800}
.contact-form input,.contact-form textarea{background:var(--panel);border:1px solid var(--border);border-radius:7px;padding:13px;color:var(--text);font:inherit}
.contact-form input:focus,.contact-form textarea:focus{outline:2px solid rgba(34,211,238,.45);border-color:var(--cyan)}
.contact-form textarea{height:132px;resize:vertical}
.form-status{min-height:24px;color:var(--green);font-weight:800}
.form-status.error{color:#fb7185}
.map{height:92px;margin:24px 12px 0;border:1px solid var(--border);border-radius:8px;background:linear-gradient(135deg,rgba(34,211,238,.16) 25%,transparent 25%),linear-gradient(45deg,rgba(52,211,153,.14) 25%,transparent 25%),var(--panel);background-size:28px 28px}
@media(max-width:980px){
  #menuBtn{display:grid}
  nav{position:absolute;right:20px;top:82px;display:none;flex-direction:column;gap:0;background:var(--panel);border:1px solid var(--border);border-radius:8px;padding:10px;width:230px;box-shadow:var(--shadow)}
  nav.show{display:flex}
  nav a{padding:12px 10px;border-bottom:0;border-radius:6px}
  nav a.active,nav a:hover{background:var(--panel2)}
  .hero,.stats,.about-grid,.contact-grid,.about-preview,.contact-strip{grid-template-columns:1fr}
  .codeforces-card{grid-template-columns:1fr}
  .three,.two{grid-template-columns:1fr}
  .skills-grid{grid-template-columns:repeat(4,1fr)}
  .info-grid{grid-template-columns:repeat(2,1fr)}
  .contact-strip{align-items:start}
}
@media(max-width:620px){
  .navbar{width:min(94%,1120px);padding:0 14px;margin-top:14px}
  .logo{font-size:19px}
  .activity-bar{display:none}
  .hero,.section,.single-page{padding:24px}
  .hero h3{font-size:17px}
  .buttons,.section-title,.footer{align-items:stretch;flex-direction:column}
  .btn{width:100%}
  .skills-grid,.info-grid{grid-template-columns:1fr 1fr}
  .codeforces-profile{align-items:flex-start}
  .codeforces-profile img{width:78px;height:78px}
  .codeforces-grid{grid-template-columns:1fr 1fr}
  .stat-numbers{flex-direction:column}
  .profile-note{flex-direction:column}
  .about-photo img{height:340px}
  .contact-info a{grid-template-columns:42px 1fr}
}