*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
:root{
  --bg:#0a0a0f;--bg-2:#12121a;--card:rgba(255,255,255,0.04);
  --border:rgba(255,255,255,0.08);--text:#e8e8f0;--muted:#8b8ba7;
  --accent:#7c5cff;--accent-2:#00d4ff;--accent-3:#ff5c9d;
  --success:#22c55e;--danger:#ef4444;
}
html,body{height:100%}
body{
  font-family:'Inter',system-ui,-apple-system,sans-serif;
  background:var(--bg);color:var(--text);
  min-height:100vh;overflow-x:hidden;line-height:1.6;
  -webkit-font-smoothing:antialiased;
}

/* Animated background */
.bg-grid{
  position:fixed;inset:0;
  background-image:
    linear-gradient(rgba(124,92,255,0.06) 1px,transparent 1px),
    linear-gradient(90deg,rgba(124,92,255,0.06) 1px,transparent 1px);
  background-size:50px 50px;
  mask-image:radial-gradient(ellipse at center,black 20%,transparent 75%);
  -webkit-mask-image:radial-gradient(ellipse at center,black 20%,transparent 75%);
  pointer-events:none;z-index:0;
}
.bg-glow{
  position:fixed;border-radius:50%;filter:blur(120px);
  opacity:0.5;pointer-events:none;z-index:0;
  animation:float 20s ease-in-out infinite;
}
.glow-1{width:500px;height:500px;background:var(--accent);top:-200px;left:-200px}
.glow-2{width:400px;height:400px;background:var(--accent-2);bottom:-150px;right:-100px;animation-delay:-7s}
.glow-3{width:350px;height:350px;background:var(--accent-3);top:40%;left:60%;animation-delay:-14s;opacity:0.3}
@keyframes float{
  0%,100%{transform:translate(0,0) scale(1)}
  33%{transform:translate(60px,-40px) scale(1.1)}
  66%{transform:translate(-40px,40px) scale(0.95)}
}

/* Nav */
.topnav{
  position:relative;z-index:10;
  display:flex;justify-content:space-between;align-items:center;
  padding:20px 32px;max-width:1300px;margin:0 auto;
}
.brand{
  display:flex;align-items:center;gap:10px;
  color:var(--text);text-decoration:none;
  font-weight:700;font-size:18px;letter-spacing:-0.02em;
}
.brand-icon{font-size:22px;filter:drop-shadow(0 0 10px rgba(124,92,255,0.6))}
.nav-admin{
  color:var(--muted);text-decoration:none;
  padding:8px 18px;border-radius:8px;
  border:1px solid var(--border);font-size:14px;font-weight:500;
  transition:all 0.2s;
}
.nav-admin:hover{color:var(--text);border-color:var(--accent);background:rgba(124,92,255,0.1)}

/* Hero */
.hero{
  position:relative;z-index:1;
  max-width:780px;margin:0 auto;padding:40px 24px 80px;
  text-align:center;
}
.hero-badge{
  display:inline-block;
  padding:8px 16px;border-radius:100px;
  background:rgba(124,92,255,0.12);
  border:1px solid rgba(124,92,255,0.3);
  color:#b8a6ff;font-size:13px;font-weight:500;
  margin-bottom:32px;
  animation:fadeUp 0.6s ease-out;
}
.hero-title{
  font-size:clamp(42px,7vw,76px);
  font-weight:800;line-height:1.05;
  letter-spacing:-0.04em;margin-bottom:24px;
  animation:fadeUp 0.6s ease-out 0.1s both;
}
.gradient-text{
  background:linear-gradient(135deg,var(--accent) 0%,var(--accent-2) 50%,var(--accent-3) 100%);
  -webkit-background-clip:text;background-clip:text;
  -webkit-text-fill-color:transparent;
  background-size:200% 200%;
  animation:shimmer 6s ease-in-out infinite;
}
@keyframes shimmer{
  0%,100%{background-position:0% 50%}
  50%{background-position:100% 50%}
}
.hero-sub{
  font-size:clamp(16px,2vw,19px);
  color:var(--muted);margin-bottom:48px;
  animation:fadeUp 0.6s ease-out 0.2s both;
}
@keyframes fadeUp{
  from{opacity:0;transform:translateY(20px)}
  to{opacity:1;transform:translateY(0)}
}

/* Card */
.card{
  background:var(--card);
  backdrop-filter:blur(20px);
  -webkit-backdrop-filter:blur(20px);
  border:1px solid var(--border);
  border-radius:20px;
  padding:28px;
  box-shadow:0 20px 60px rgba(0,0,0,0.4),0 0 0 1px rgba(124,92,255,0.1) inset;
  animation:fadeUp 0.6s ease-out 0.3s both;
}
.shorten-form{text-align:left}
.input-row{display:flex;gap:12px;flex-wrap:wrap}
.input-wrap{
  position:relative;flex:1;min-width:200px;
}
.input-icon{
  position:absolute;left:16px;top:50%;transform:translateY(-50%);
  color:var(--muted);pointer-events:none;
}
.input-wrap input{
  width:100%;
  padding:16px 16px 16px 46px;
  background:rgba(0,0,0,0.3);
  border:1.5px solid var(--border);
  border-radius:12px;
  color:var(--text);font-size:16px;
  font-family:inherit;
  transition:all 0.25s;
}
.input-wrap input:focus{
  outline:none;
  border-color:var(--accent);
  background:rgba(0,0,0,0.4);
  box-shadow:0 0 0 4px rgba(124,92,255,0.15);
}
.input-wrap input::placeholder{color:#555570}

.btn-primary{
  display:inline-flex;align-items:center;gap:8px;
  padding:16px 28px;border:none;border-radius:12px;
  background:linear-gradient(135deg,var(--accent),#a67cff);
  color:#fff;font-size:16px;font-weight:600;
  font-family:inherit;cursor:pointer;
  transition:all 0.25s;
  box-shadow:0 8px 24px rgba(124,92,255,0.4);
  white-space:nowrap;
}
.btn-primary:hover:not(:disabled){
  transform:translateY(-2px);
  box-shadow:0 12px 32px rgba(124,92,255,0.55);
}
.btn-primary:active:not(:disabled){transform:translateY(0)}
.btn-primary:disabled{opacity:0.7;cursor:wait}

/* Advanced */
.advanced{
  margin-top:16px;
  padding-top:16px;
  border-top:1px solid var(--border);
}
.advanced summary{
  cursor:pointer;font-size:14px;color:var(--muted);
  padding:6px 0;user-select:none;
  transition:color 0.2s;
}
.advanced summary:hover{color:var(--text)}
.advanced[open] summary{margin-bottom:14px}
.advanced-grid{
  display:grid;
  grid-template-columns:repeat(auto-fit,minmax(200px,1fr));
  gap:14px;
  animation:fadeUp 0.3s ease-out;
}
.field label{
  display:block;font-size:13px;color:var(--muted);
  margin-bottom:8px;font-weight:500;
}
.field input{
  width:100%;
  padding:12px 14px;
  background:rgba(0,0,0,0.3);
  border:1.5px solid var(--border);
  border-radius:10px;
  color:var(--text);font-size:15px;
  font-family:inherit;
  transition:all 0.25s;
}
.field input:focus{
  outline:none;border-color:var(--accent);
  box-shadow:0 0 0 4px rgba(124,92,255,0.15);
}
.prefix-input{
  display:flex;align-items:stretch;
  background:rgba(0,0,0,0.3);
  border:1.5px solid var(--border);
  border-radius:10px;overflow:hidden;
  transition:all 0.25s;
}
.prefix-input:focus-within{
  border-color:var(--accent);
  box-shadow:0 0 0 4px rgba(124,92,255,0.15);
}
.prefix{
  padding:12px 0 12px 14px;
  color:var(--muted);font-size:14px;
  white-space:nowrap;
}
.prefix-input input{
  border:none;background:transparent;box-shadow:none;
  padding-left:0;
}
.prefix-input input:focus{box-shadow:none;background:transparent}

/* Alert */
.alert{
  display:flex;align-items:center;gap:10px;
  padding:14px 18px;
  border-radius:12px;margin-bottom:18px;
  font-size:14px;text-align:left;
}
.alert.error{
  background:rgba(239,68,68,0.1);
  border:1px solid rgba(239,68,68,0.3);
  color:#fca5a5;
}

/* Success */
.success-box{
  display:flex;align-items:center;gap:14px;
  padding:18px;
  background:linear-gradient(135deg,rgba(34,197,94,0.1),rgba(34,197,94,0.05));
  border:1px solid rgba(34,197,94,0.3);
  border-radius:14px;margin-bottom:20px;
  text-align:left;
  animation:fadeUp 0.4s ease-out;
}
.success-icon{
  width:40px;height:40px;flex-shrink:0;
  display:flex;align-items:center;justify-content:center;
  background:var(--success);color:#fff;
  border-radius:50%;font-weight:700;font-size:20px;
}
.success-content{flex:1;min-width:0}
.success-label{font-size:12px;color:var(--success);font-weight:600;text-transform:uppercase;letter-spacing:0.05em;margin-bottom:4px}
.short-link{
  display:block;color:var(--accent-2);
  font-weight:600;font-size:16px;
  text-decoration:none;word-break:break-all;
  margin-bottom:2px;
}
.short-link:hover{text-decoration:underline}
.original{
  font-size:12px;color:var(--muted);
  overflow:hidden;text-overflow:ellipsis;white-space:nowrap;
}
.expires{font-size:11px;color:var(--muted);margin-top:4px}
.copy-btn{
  padding:10px;background:rgba(255,255,255,0.05);
  border:1px solid var(--border);border-radius:10px;
  color:var(--text);cursor:pointer;
  transition:all 0.2s;flex-shrink:0;
}
.copy-btn:hover{background:rgba(124,92,255,0.15);border-color:var(--accent)}
.copy-btn.copied{background:var(--success);border-color:var(--success)}

/* Features */
.features{
  display:grid;
  grid-template-columns:repeat(auto-fit,minmax(140px,1fr));
  gap:16px;margin-top:48px;
  animation:fadeUp 0.6s ease-out 0.4s both;
}
.feature{
  padding:24px 16px;
  background:rgba(255,255,255,0.02);
  border:1px solid var(--border);
  border-radius:14px;
  transition:all 0.3s;
}
.feature:hover{
  background:rgba(124,92,255,0.06);
  border-color:rgba(124,92,255,0.3);
  transform:translateY(-4px);
}
.feature-icon{font-size:28px;margin-bottom:8px}
.feature h3{font-size:15px;font-weight:600;margin-bottom:4px}
.feature p{font-size:13px;color:var(--muted)}

.footer{
  position:relative;z-index:1;
  text-align:center;padding:32px 20px;
  color:var(--muted);font-size:13px;
}
.footer strong{color:var(--text);font-weight:600}

@media(max-width:640px){
  .topnav{padding:16px 20px}
  .hero{padding:24px 16px 60px}
  .card{padding:20px}
  .input-row{flex-direction:column}
  .btn-primary{width:100%;justify-content:center}
  .features{grid-template-columns:repeat(2,1fr)}
}