/* === Reset & Base === */
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
:root{
  --bg:#0a0a0a;--fg:#00ff41;--fg-dim:#00aa2a;--fg-bright:#66ff88;
  --border:#00ff41;--input-bg:#0d1a0d;--btn-bg:#003300;--btn-hover:#005500;
  --link:#00ff41;--link-hover:#66ff88;--error:#ff4444;--warning:#ffaa00;
  --header-bg:#000;--card-bg:#0d0d0d;--scanline:rgba(0,255,65,0.03);
  --font-mono:'Courier New',Courier,'Lucida Console',monospace;
}
[data-theme="amber"]{
  --fg:#ffb000;--fg-dim:#aa7500;--fg-bright:#ffd060;
  --border:#ffb000;--input-bg:#1a150a;--btn-bg:#332200;--btn-hover:#554400;
  --link:#ffb000;--link-hover:#ffd060;--scanline:rgba(255,176,0,0.03);
}
[data-theme="blue"]{
  --bg:#0a0a1a;--fg:#00aaff;--fg-dim:#0066aa;--fg-bright:#66ccff;
  --border:#00aaff;--input-bg:#0a0d1a;--btn-bg:#002244;--btn-hover:#003366;
  --link:#00aaff;--link-hover:#66ccff;--card-bg:#0d0d1a;
  --scanline:rgba(0,170,255,0.03);
}
html{font-size:16px;scroll-behavior:smooth}
body{
  font-family:var(--font-mono);background:var(--bg);color:var(--fg);
  line-height:1.6;min-height:100vh;display:flex;flex-direction:column;
  position:relative;overflow-x:hidden;
}
/* Scanline overlay */
body::after{
  content:'';position:fixed;top:0;left:0;width:100%;height:100%;
  background:repeating-linear-gradient(0deg,var(--scanline) 0px,var(--scanline) 1px,transparent 1px,transparent 3px);
  pointer-events:none;z-index:9999;
}
a{color:var(--link);text-decoration:none;transition:color .2s}
a:hover{color:var(--link-hover);text-decoration:underline}

/* === Layout === */
.container{max-width:960px;margin:0 auto;padding:0 1rem;width:100%}
.main{flex:1}

/* === Header === */
.header{
  border-bottom:2px solid var(--border);padding:1rem 0;
  background:var(--header-bg);position:sticky;top:0;z-index:100;
}
.header .container{display:flex;justify-content:space-between;align-items:center;flex-wrap:wrap;gap:.5rem}
.logo{font-size:1.4rem;font-weight:bold;letter-spacing:2px}
.logo a{color:var(--fg)}
.logo .blink{animation:blink 1s step-end infinite}
@keyframes blink{50%{opacity:0}}
nav{display:flex;gap:1rem;align-items:center}
nav a{font-size:.9rem;text-transform:uppercase;letter-spacing:1px}
.theme-btn{
  background:none;border:1px solid var(--border);color:var(--fg);
  font-family:var(--font-mono);font-size:.75rem;padding:.2rem .5rem;
  cursor:pointer;text-transform:uppercase;
}
.theme-btn:hover{background:var(--btn-hover)}

/* === Ad Slots === */
.ad-slot{
  border:1px dashed var(--fg-dim);padding:1rem;text-align:center;
  color:var(--fg-dim);font-size:.75rem;margin:1rem 0;min-height:90px;
  display:flex;align-items:center;justify-content:center;
}

/* === Hero / Tool === */
.hero{padding:2rem 0;text-align:center}
.hero h1{font-size:1.8rem;margin-bottom:.5rem;text-transform:uppercase;letter-spacing:3px}
.hero .subtitle{color:var(--fg-dim);margin-bottom:2rem;font-size:.9rem}
.tool-box{
  border:2px solid var(--border);padding:1.5rem;max-width:600px;
  margin:0 auto;background:var(--card-bg);position:relative;
}
.tool-box::before{
  content:'┌─ MAC LOOKUP ─┐';position:absolute;top:-0.7rem;left:1rem;
  background:var(--bg);padding:0 .5rem;font-size:.8rem;color:var(--fg-bright);
}
.input-row{display:flex;gap:.5rem;margin-bottom:1rem}
.mac-input{
  flex:1;background:var(--input-bg);border:1px solid var(--border);
  color:var(--fg-bright);font-family:var(--font-mono);font-size:1.2rem;
  padding:.6rem .8rem;text-transform:uppercase;letter-spacing:2px;
  outline:none;transition:border-color .2s;
}
.mac-input:focus{border-color:var(--fg-bright);box-shadow:0 0 8px var(--fg-dim)}
.mac-input::placeholder{color:var(--fg-dim);opacity:.5;text-transform:none;letter-spacing:0}
.btn{
  background:var(--btn-bg);border:2px solid var(--border);color:var(--fg);
  font-family:var(--font-mono);font-size:1rem;padding:.6rem 1.2rem;
  cursor:pointer;text-transform:uppercase;letter-spacing:1px;
  transition:all .2s;white-space:nowrap;
}
.btn:hover{background:var(--btn-hover);box-shadow:0 0 10px var(--fg-dim)}
.btn:active{transform:scale(.97)}
.btn-small{font-size:.75rem;padding:.3rem .6rem}
.action-row{display:flex;gap:.5rem;justify-content:center;margin-bottom:1rem}

/* Results */
.result{
  margin-top:1rem;padding:1rem;border:1px solid var(--border);
  background:var(--input-bg);text-align:left;display:none;
}
.result.visible{display:block}
.result-label{color:var(--fg-dim);font-size:.8rem;text-transform:uppercase}
.result-value{color:var(--fg-bright);font-size:1.1rem;margin-bottom:.5rem;word-break:break-all}
.result-error{color:var(--error)}
.result-copy{
  background:none;border:1px solid var(--fg-dim);color:var(--fg-dim);
  font-family:var(--font-mono);font-size:.7rem;padding:.15rem .4rem;
  cursor:pointer;float:right;
}
.result-copy:hover{color:var(--fg);border-color:var(--fg)}

/* Examples */
.examples{margin-top:1.5rem}
.examples h3{font-size:.9rem;color:var(--fg-dim);margin-bottom:.5rem}
.example-list{display:flex;flex-wrap:wrap;gap:.5rem;justify-content:center}
.example-btn{
  background:none;border:1px solid var(--fg-dim);color:var(--fg-dim);
  font-family:var(--font-mono);font-size:.8rem;padding:.3rem .6rem;
  cursor:pointer;transition:all .2s;
}
.example-btn:hover{color:var(--fg);border-color:var(--fg)}

/* === Content Sections === */
.content{padding:2rem 0}
.content h2{font-size:1.3rem;margin-bottom:1rem;color:var(--fg-bright);border-bottom:1px solid var(--border);padding-bottom:.5rem}
.content h3{font-size:1rem;margin:1.5rem 0 .5rem;color:var(--fg-bright)}
.content p{margin-bottom:1rem;color:var(--fg)}
.content ul,.content ol{margin:0 0 1rem 1.5rem}
.content li{margin-bottom:.3rem}
.content code{background:var(--input-bg);padding:.1rem .3rem;border:1px solid var(--fg-dim);font-size:.9em}
.card{border:1px solid var(--border);padding:1.5rem;margin-bottom:1.5rem;background:var(--card-bg)}

/* === Footer === */
.footer{
  border-top:2px solid var(--border);padding:1.5rem 0;margin-top:2rem;
  text-align:center;font-size:.8rem;color:var(--fg-dim);
}
.footer-links{display:flex;gap:1rem;justify-content:center;margin-bottom:.5rem;flex-wrap:wrap}

/* === 404 === */
.ascii-art{font-size:.6rem;line-height:1.1;white-space:pre;color:var(--fg);margin:2rem 0;overflow-x:auto}

/* === Responsive === */
@media(max-width:600px){
  .hero h1{font-size:1.3rem;letter-spacing:1px}
  .input-row{flex-direction:column}
  .mac-input{font-size:1rem}
  .tool-box{padding:1rem}
  .header .container{flex-direction:column;text-align:center}
  .ascii-art{font-size:.35rem}
}

/* === Loading === */
.loading{display:inline-block;animation:pulse 1s ease-in-out infinite}
@keyframes pulse{0%,100%{opacity:1}50%{opacity:.3}}
.status-bar{font-size:.75rem;color:var(--fg-dim);text-align:center;margin-top:.5rem}