:root {
  --bg: #0a0a0c;
  --bg-soft: #111114;
  --bg-card: #16161b;
  --border: #26262d;
  --text: #e4e4e7;
  --muted: #9a9aa3;
  --dim: #5f5f68;
  --accent: #f9a8d4;
  --accent-dim: rgba(249, 168, 212, 0.14);
  --ok: #34adec;
  --mono: ui-monospace, SFMono-Regular, Menlo, Consolas, "Liberation Mono", monospace;
}

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

html { scroll-behavior: smooth; }

body {
  background: var(--bg);
  color: var(--text);
  font-family: var(--mono);
  font-size: 15px;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

a { color: var(--accent); text-decoration: none; border-bottom: 1px solid transparent; transition: color .15s ease, border-color .15s ease; }
a:hover { border-bottom-color: var(--accent); }

::selection { background: var(--accent); color: #111; }

/* fixed animated backdrop */
#bg { position: fixed; inset: 0; width: 100%; height: 100%; z-index: 0; pointer-events: none; display: block; }

main, header, footer { position: relative; z-index: 1; }

.container { max-width: 880px; margin: 0 auto; padding: 0 22px; }

/* ---------- header ---------- */
header.container {
  position: sticky;
  top: 16px;
  background: rgba(22, 22, 27, 0.75);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border: 1px solid var(--border);
  border-radius: 16px;
  z-index: 100;
  display: flex;
  align-items: center;
  justify-content: space-between;
  box-shadow: 0 8px 32px 0 rgba(0, 0, 0, 0.4);
  padding: 12px 24px;
  margin-top: 16px;
  margin-bottom: 32px;
  width: calc(100% - 44px);
  transition: border-color 0.3s ease, box-shadow 0.3s ease;
}
header.container:hover {
  border-color: rgba(249, 168, 212, 0.4);
  box-shadow: 0 8px 32px 0 rgba(249, 168, 212, 0.1);
}
.logo { display: inline-flex; align-items: center; font-weight: 700; letter-spacing: .05em; font-size: 15px; color: var(--text); }
.logo .dot { color: var(--accent); }
nav {
  display: flex; align-items: center; gap: 2px; font-size: 13px;
  border: 1px solid var(--border); border-radius: 12px;
  background: rgba(10, 10, 12, 0.5); padding: 4px;
}
nav a {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 5px 14px;
  border-radius: 8px;
  color: var(--muted);
  transition: all 0.2s ease;
  line-height: 1;
  white-space: nowrap;
  text-decoration: none;
}
nav a:hover { color: var(--text); border-bottom-color: transparent; background: rgba(255, 255, 255, 0.05); }
nav a.active { color: var(--accent); background: var(--accent-dim); }

/* ---------- hero ---------- */
.hero { padding: 72px 0 40px; }
.hero .kicker { color: var(--dim); font-size: 13px; letter-spacing: .18em; text-transform: uppercase; }
.hero h1 {
  font-size: clamp(40px, 8vw, 72px);
  font-weight: 700;
  line-height: 1.02;
  letter-spacing: -.01em;
  margin: 14px 0 18px;
}
.hero h1 .char { display: inline-block; opacity: 0; }
.hero .tagline { max-width: 640px; color: var(--muted); font-size: 16px; }
.hero .caret {
  display: inline-block; width: .55em; height: 1.1em;
  background: var(--accent); margin-left: 3px; transform: translateY(3px);
}

/* ---------- stats strip ---------- */
.stats { display: flex; flex-wrap: wrap; gap: 14px; margin: 36px 0 0; }
.stat {
  border: 1px solid var(--border); background: var(--bg-card);
  border-radius: 10px; padding: 10px 18px;
}
.stat .n { font-size: 22px; font-weight: 700; color: var(--accent); }
.stat .l  { font-size: 11px; color: var(--dim); text-transform: uppercase; letter-spacing: .1em; }

/* ---------- sections ---------- */
.section { padding: 44px 0 10px; }
.sec-head {
  display: flex; align-items: baseline; gap: 12px;
  margin-bottom: 20px; font-size: 13px; text-transform: uppercase; letter-spacing: .15em; color: var(--dim);
}
.sec-head .num { color: var(--accent); }

.card {
  background: var(--bg-card); border: 1px solid var(--border);
  border-radius: 12px; padding: 20px;
}

.menu-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(240px, 1fr)); gap: 14px; }
.menu-item {
  display: flex; flex-direction: column; gap: 6px;
  background: var(--bg-card); border: 1px solid var(--border);
  border-radius: 12px; padding: 16px 18px;
  transition: border-color .18s ease, transform .18s ease, background .18s ease;
  cursor: pointer;
}
.menu-item:hover { border-color: var(--accent); background: var(--accent-dim); }
.menu-item .t { font-weight: 700; font-size: 15px; }
.menu-item .d { font-size: 12.5px; color: var(--muted); }
.menu-item .meta { color: var(--dim); font-size: 11px; }

.about-text { color: var(--muted); }
.about-text p + p { margin-top: 12px; }
.about-text strong { color: var(--text); }

.skills { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 16px; }
.pill {
  border: 1px solid var(--border); border-radius: 6px;
  padding: 4px 12px; font-size: 12.5px; color: var(--muted);
}
.pill.cat { border-color: var(--accent); color: var(--accent); background: var(--accent-dim); }

/* ---------- footer ---------- */
footer { text-align: center; color: var(--dim); font-size: 12px; padding: 60px 0 40px; }
footer a { color: var(--dim); }
footer a:hover { color: var(--accent); }

/* ---------- writeup content (archive) ---------- */
.writeup { line-height: 1.75; font-size: 14.5px; }
.writeup h1, .writeup h2, .writeup h3, .writeup h4 { color: var(--accent); margin: 28px 0 10px; }
.writeup h1 { font-size: 22px; } .writeup h2 { font-size: 19px; } .writeup h3 { font-size: 17px; }
.writeup p { margin: 12px 0; color: var(--text); }
.writeup ul, .writeup ol { margin: 12px 0 12px 22px; }
.writeup li { margin: 4px 0; }
.writeup code { background: var(--bg-soft); border: 1px solid var(--border); border-radius: 4px; padding: 1px 5px; font-size: 13px; color: var(--accent); }
.writeup pre {
  background: var(--bg-soft); border: 1px solid var(--border); border-radius: 8px;
  padding: 14px 16px; overflow-x: auto; margin: 14px 0;
}
.writeup pre code { background: none; border: none; padding: 0; color: var(--text); font-size: 12.5px; }
.writeup img { max-width: 100%; border: 1px solid var(--border); border-radius: 8px; }
.writeup blockquote { border-left: 3px solid var(--accent); padding-left: 14px; color: var(--muted); margin: 14px 0; }

/* ---------- archive page controls ---------- */
.controls { display: flex; flex-wrap: wrap; gap: 10px; margin-bottom: 20px; }
input[type="text"], .search {
  flex: 1 1 260px; background: var(--bg-card); border: 1px solid var(--border);
  color: var(--text); border-radius: 10px; padding: 10px 14px; font-family: var(--mono); font-size: 14px;
  outline: none;
}
input:focus { border-color: var(--accent); }

.chips { display: flex; flex-wrap: wrap; gap: 8px; }
.chip {
  border: 1px solid var(--border); color: var(--muted); border-radius: 8px;
  padding: 4px 12px; font-size: 12px; cursor: pointer; background: var(--bg-card);
  transition: all .15s ease;
}
.chip:hover { border-color: var(--accent); color: var(--accent); }
.chip.active { border-color: var(--accent); color: var(--accent); background: var(--accent-dim); }

/* archive list (CTFs) */
.ctf-block { margin-bottom: 34px; }
.ctf-block .yr {
  font-size: 13px; text-transform: uppercase; letter-spacing: .2em; color: var(--dim);
  margin-bottom: 14px;
}
.ctf-list { display: grid; grid-template-columns: repeat(auto-fill, minmax(250px, 1fr)); gap: 12px; }
.ctf-item {
  background: var(--bg-card); border: 1px solid var(--border); border-radius: 12px;
  padding: 14px 16px; cursor: pointer; transition: all .18s ease;
}
.ctf-item:hover { border-color: var(--accent); transform: translateY(-2px); }
.ctf-item .name { font-weight: 700; font-size: 15px; }
.ctf-item .rank { color: var(--ok); font-size: 12px; margin-top: 2px; }
.ctf-item .cnt { color: var(--dim); font-size: 12px; }

.bar { display: flex; align-items: center; gap: 8px; margin-top: 10px; }
.back-btn { color: var(--muted); font-size: 13px; cursor: pointer; border-bottom: 1px solid transparent; }
.back-btn:hover { color: var(--accent); border-bottom-color: var(--accent); }
.spacer { flex: 1; }

/* challenge rows */
.chall-list { display: flex; flex-direction: column; gap: 8px; }
.chall-item {
  display: flex; align-items: center; justify-content: space-between; gap: 12px;
  background: var(--bg-card); border: 1px solid var(--border); border-radius: 10px;
  padding: 12px 16px; cursor: pointer; transition: all .15s ease;
}
.chall-item:hover { border-color: var(--accent); }
.chall-item .title { font-weight: 600; font-size: 14.5px; }
.chall-item .cat { font-size: 11.5px; color: var(--accent); border: 1px solid var(--accent); border-radius: 6px; padding: 2px 10px; white-space: nowrap; }

/* empty */
.empty { color: var(--dim); font-style: italic; padding: 20px 0; }

.badge-rank { color: var(--ok); }

footer .heart { color: var(--accent); }

/* ---------- letter grid background (profile) ---------- */
#lgrid {
  position: fixed; inset: 0; z-index: 0; pointer-events: none;
  display: grid; grid-template-columns: repeat(var(--cols, 40), 1fr); grid-auto-rows: 1fr;
  overflow: hidden; opacity: .16;
}
#lgrid .g {
  display: flex; align-items: center; justify-content: center;
  font-size: clamp(9px, 1.4vw, 15px); line-height: 1; color: var(--accent);
  animation: gskip 2.8s ease-in-out infinite alternate;
  animation-delay: calc(var(--t) * 20ms);
  will-change: transform, opacity;
}
@keyframes gskip {
  from { transform: scale(.55); opacity: .2; }
  to   { transform: scale(1);   opacity: .95; }
}

/* ---------- letterized headings ---------- */
.rx { white-space: pre; }
.rx .lr { display: inline-block; animation: rxp .9s cubic-bezier(.2,.7,.2,1) backwards; animation-delay: calc(var(--t) * 28ms); }
@keyframes rxp { from { transform: scale(.4); opacity: 0; } to { transform: scale(1); opacity: 1; } }

/* ---------- profile page ---------- */
.profile-hero { display: flex; gap: 22px; align-items: center; flex-wrap: wrap; margin-bottom: 16px; }
.avatar {
  width: 128px; height: 128px; border-radius: 24px; object-fit: cover;
  border: 1px solid var(--border); box-shadow: 0 0 28px var(--accent-dim);
  flex: 0 0 auto;
}
.profile-facts { display: grid; grid-template-columns: repeat(auto-fill, minmax(200px, 1fr)); gap: 8px; }
.fact {
  display: flex; gap: 8px; font-size: 13px; color: var(--muted);
  border: 1px solid var(--border); background: var(--bg-card); border-radius: 10px; padding: 8px 12px;
}
.fact b { color: var(--text); font-weight: 600; }

/* social buttons */
.socgrid { display: grid; grid-template-columns: repeat(auto-fill, minmax(230px, 1fr)); gap: 12px; }
.soc {
  position: relative;
  display: flex; flex-direction: column; gap: 5px;
  border: 1px solid var(--border); background: var(--bg-card); border-radius: 12px; padding: 14px 16px;
  transition: border-color .18s, transform .18s, background .18s;
  text-decoration: none;
}
.soc:hover { border-color: var(--accent); transform: translateY(-2px); background: var(--accent-dim); }
.soc .ic { font-size: 20px; color: var(--accent); }
.soc .cap { font-size: 11px; color: var(--dim); text-transform: uppercase; letter-spacing: .12em; }
.soc .ic { font-size: 22px; }
.soc .h { font-size: 14px; color: var(--text); word-break: break-all; }
.soc.todo { opacity: .55; pointer-events: none; }
.soc[data-copied]::after { content: "copied!"; position: absolute; top: 10px; right: 14px; font-size: 11px; color: var(--accent); }

/* skill bars */
.bars { display: flex; flex-direction: column; gap: 12px; margin-top: 22px; }
.bar { display: grid; grid-template-columns: 160px 1fr 38px; align-items: center; gap: 12px; font-size: 12.5px; }
.bar .t  { color: var(--muted); }
.bar .v  { color: var(--dim); text-align: right; }
.bar .track { height: 6px; border-radius: 4px; background: var(--bg-soft); border: 1px solid var(--border); overflow: hidden; }
.bar .fill {
  height: 100%; width: var(--w);
  background: linear-gradient(90deg, #150485, var(--accent));
  animation: grow 1.3s ease-out both;
}
@keyframes grow { from { width: 0; } }

/* ---------- profile hero ---------- */
.names { font-size: clamp(35px, 6vw, 48px); font-weight: 700; line-height: 1.05; margin: 14px 0 10px; }