/* cool dark glass UI for the CTF blog */
/* Variables */
:root{
  --bg-900: #0b0e12;
  --bg-800: #0f1720;
  --panel: rgba(255,255,255,0.04);
  --glass: rgba(255,255,255,0.04);
  --muted: rgba(255,255,255,0.6);
  --accent-1: #6EE7B7; /* mint */
  --accent-2: #7C4DFF; /* violet */
  --danger: #FF6B6B;
  --radius-lg: 14px;
  --radius-md: 10px;
  --shadow-1: 0 6px 20px rgba(2,6,23,0.6);
  --card-border: linear-gradient(120deg, rgba(124,77,255,0.18), rgba(110,231,183,0.12));
}

*{box-sizing:border-box}
html,body{height:100%}
body{
  font-family: Inter, ui-sans-serif, system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial;
  background: radial-gradient(1200px 600px at 10% 10%, rgba(124,77,255,0.06), transparent),
              radial-gradient(900px 400px at 90% 90%, rgba(110,231,183,0.03), transparent),
              linear-gradient(180deg,var(--bg-900),var(--bg-800));
  color: #e6eef6;
  margin:0;
  -webkit-font-smoothing:antialiased;
  -moz-osx-font-smoothing:grayscale;
  padding:28px;
  line-height:1.45;
}

header{
  display:flex;
  gap:18px;
  align-items:center;
  justify-content:space-between;
  max-width:1100px;
  margin:0 auto 22px;
  padding:14px 18px;
  border-radius:var(--radius-lg);
  background: linear-gradient(180deg, rgba(255,255,255,0.03), rgba(255,255,255,0.01));
  box-shadow: var(--shadow-1);
  border: 1px solid rgba(255,255,255,0.03);
  backdrop-filter: blur(8px) saturate(120%);
}
header h1{
  margin:0;
  font-size:20px;
  letter-spacing:0.4px;
  display:flex;
  gap:10px;
  align-items:center;
}
.logo-dot{
  width:12px;height:12px;border-radius:50%;
  background: conic-gradient(from 180deg at 50% 50%, var(--accent-1), var(--accent-2));
  box-shadow:0 4px 18px rgba(124,77,255,0.18), inset 0 -2px 6px rgba(255,255,255,0.04);
}

/* nav */
nav a{
  color:var(--muted);
  text-decoration:none;
  padding:8px 12px;
  border-radius:10px;
  font-size:14px;
}
nav a:hover{ color: white; background: rgba(255,255,255,0.03) }
nav a.active{
  background: linear-gradient(90deg, rgba(124,77,255,0.12), rgba(110,231,183,0.08));
  color: white;
  box-shadow: 0 6px 18px rgba(2,6,23,0.5);
}

main{
  max-width:1100px;
  margin: 18px auto;
  display:grid;
  grid-template-columns: 1fr;
  gap:18px;
}

form, article, .card{
  background: linear-gradient(180deg, rgba(255,255,255,0.02), rgba(255,255,255,0.01));
  border-radius: var(--radius-md);
  padding:16px;
  border: 1px solid rgba(255,255,255,0.03);
  box-shadow: 0 8px 30px rgba(2,6,23,0.45);
}

input[type="text"], input[type="password"], textarea, input[type="file"], select {
  width:100%;
  padding:10px 12px;
  border-radius:8px;
  background: rgba(255,255,255,0.02);
  border:1px solid rgba(255,255,255,0.04);
  color: #e6eef6;
  outline:none;
  font-size:14px;
  margin-top:6px;
}
textarea{ min-height:120px; resize:vertical; }

button, .btn {
  display:inline-block;
  padding:10px 14px;
  border-radius:10px;
  border: none;
  cursor:pointer;
  font-weight:600;
  background: linear-gradient(90deg, var(--accent-1), var(--accent-2));
  color: #04111a;
  transition: transform .12s ease, box-shadow .12s ease, opacity .12s;
  box-shadow: 0 8px 20px rgba(124,77,255,0.12);
}
button:hover, .btn:hover{ transform: translateY(-2px); box-shadow: 0 14px 32px rgba(124,77,255,0.14) }
button.ghost{
  background: transparent; color: var(--muted); border:1px solid rgba(255,255,255,0.04);
}

article h3{ margin:0 0 6px; font-size:18px }
article p { color: var(--muted); margin:6px 0; }
article img{ border-radius:8px; max-width:100%; display:block; margin:10px 0; border:1px solid rgba(255,255,255,0.03) }

pre{ 
  background: linear-gradient(180deg, rgba(255,255,255,0.012), rgba(255,255,255,0.01));
  border-radius:8px; padding:12px; overflow:auto; color:#cfeff1;
  font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, "Roboto Mono", "Courier New", monospace;
  font-size:13px; border:1px solid rgba(255,255,255,0.03);
}

ul{ list-style:none; padding:0; margin:0 0 10px 0; display:flex; gap:8px; flex-wrap:wrap }
ul li{
  background: linear-gradient(90deg, rgba(124,77,255,0.12), rgba(110,231,183,0.07));
  padding:8px 10px; border-radius:10px; color:#eafbf6; font-weight:600;
}

footer{ max-width:1100px; margin:18px auto; color:var(--muted); font-size:13px; text-align:center }

@media (min-width:900px){
  main{ grid-template-columns: 1fr 360px; align-items:start; }
}

.label-muted{ color:var(--muted); font-size:13px }
.badge{
  display:inline-block; padding:6px 10px; border-radius:999px; font-weight:700; font-size:12px;
  background: linear-gradient(90deg, rgba(124,77,255,0.12), rgba(110,231,183,0.06)); color:#e6fef0;
}

.file-wrap{
  display:flex; gap:12px; align-items:center;
}
.file-wrap input[type=file]{ display:none; }
.file-btn{
  display:inline-flex; align-items:center; gap:8px; padding:8px 12px; border-radius:8px;
  background: rgba(255,255,255,0.02); border:1px dashed rgba(255,255,255,0.04); color:var(--muted);
}

:focus{ outline: 3px solid rgba(124,77,255,0.12); outline-offset:3px }