/* === Base Reset & Variables === */
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
:root{
  --bg-primary:#0f172a;--bg-secondary:#1e293b;--bg-tertiary:#334155;
  --text-primary:#f1f5f9;--text-secondary:#94a3b8;--text-muted:#64748b;
  --accent:#a78bfa;--accent-hover:#c4b5fd;--accent-dim:rgba(167,139,250,.1);
  --border:#334155;--radius:8px;--radius-lg:12px;
  --success:#4ade80;--error:#f87171;--warning:#fbbf24;
  --font-mono:'JetBrains Mono',ui-monospace,SFMono-Regular,monospace;
  --font-sans:Inter,-apple-system,BlinkMacSystemFont,'Segoe UI',sans-serif;
}
html{scroll-behavior:smooth}
body{font-family:var(--font-sans);background:var(--bg-primary);color:var(--text-primary);line-height:1.6;min-height:100vh;display:flex;flex-direction:column}
a{color:var(--accent);text-decoration:none;transition:color .2s}a:hover{color:var(--accent-hover)}
.container{max-width:1200px;margin:0 auto;padding:0 1.5rem;width:100%}
.tool-layout{display:grid;grid-template-columns:1fr 280px;gap:2rem;align-items:start}
@media(max-width:900px){.tool-layout{grid-template-columns:1fr}}
.site-header{background:var(--bg-secondary);border-bottom:1px solid var(--border);padding:.75rem 0;position:sticky;top:0;z-index:100;backdrop-filter:blur(12px)}
.site-header .container{display:flex;align-items:center;justify-content:space-between;gap:1rem}
.logo{font-size:1.25rem;font-weight:700;color:var(--text-primary)}.logo span{color:var(--accent)}
.nav-links{display:flex;gap:1.5rem;align-items:center}.nav-links a{color:var(--text-secondary);font-size:.875rem;font-weight:500}.nav-links a:hover{color:var(--accent)}
.mobile-menu-btn{display:none;background:none;border:none;color:var(--text-primary);font-size:1.5rem;cursor:pointer}
@media(max-width:640px){.nav-links{display:none;position:absolute;top:100%;left:0;right:0;background:var(--bg-secondary);flex-direction:column;padding:1rem 1.5rem;border-bottom:1px solid var(--border)}.nav-links.open{display:flex}.mobile-menu-btn{display:block}}
.hero{padding:4rem 0 2rem;text-align:center}.hero h1{font-size:2.5rem;font-weight:800;margin-bottom:1rem;line-height:1.2}.hero h1 span{color:var(--accent)}.hero p{color:var(--text-secondary);font-size:1.125rem;max-width:600px;margin:0 auto 2rem}
.search-box{max-width:500px;margin:0 auto;position:relative}.search-box input{width:100%;padding:.875rem 1rem .875rem 3rem;background:var(--bg-secondary);border:1px solid var(--border);border-radius:var(--radius-lg);color:var(--text-primary);font-size:1rem;outline:none;transition:border-color .2s}.search-box input:focus{border-color:var(--accent)}.search-box svg{position:absolute;left:1rem;top:50%;transform:translateY(-50%);color:var(--text-muted);width:20px;height:20px}
.tools-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(280px,1fr));gap:1.25rem;padding:2rem 0 4rem}
.tool-card{background:var(--bg-secondary);border:1px solid var(--border);border-radius:var(--radius-lg);padding:1.5rem;transition:transform .2s,border-color .2s,box-shadow .2s;display:flex;flex-direction:column;gap:.75rem}.tool-card:hover{transform:translateY(-2px);border-color:var(--accent);box-shadow:0 8px 32px rgba(167,139,250,.08)}
.tool-card-icon{width:40px;height:40px;background:var(--accent-dim);border-radius:var(--radius);display:flex;align-items:center;justify-content:center;color:var(--accent);font-size:1.25rem}
.tool-card h3{font-size:1.05rem;font-weight:600}.tool-card p{color:var(--text-secondary);font-size:.875rem;line-height:1.5;flex:1}
.tool-page{padding:2rem 0 4rem}.tool-page h1{font-size:1.75rem;font-weight:700;margin-bottom:.5rem}.tool-page .tool-desc{color:var(--text-secondary);margin-bottom:1.5rem;font-size:.95rem}
.tool-main{background:var(--bg-secondary);border:1px solid var(--border);border-radius:var(--radius-lg);padding:1.5rem}
.tool-controls{display:flex;gap:.75rem;flex-wrap:wrap;margin-bottom:1rem}
.btn{display:inline-flex;align-items:center;gap:.5rem;padding:.5rem 1rem;border-radius:var(--radius);font-size:.875rem;font-weight:500;cursor:pointer;border:1px solid transparent;transition:all .2s;font-family:var(--font-sans)}
.btn-primary{background:var(--accent);color:#0f172a}.btn-primary:hover{background:var(--accent-hover)}
.btn-secondary{background:var(--bg-tertiary);color:var(--text-primary);border-color:var(--border)}.btn-secondary:hover{border-color:var(--accent)}
textarea,.input-field{width:100%;padding:.75rem 1rem;background:var(--bg-primary);border:1px solid var(--border);border-radius:var(--radius);color:var(--text-primary);font-family:var(--font-mono);font-size:.875rem;resize:vertical;outline:none;transition:border-color .2s}textarea:focus,.input-field:focus{border-color:var(--accent)}textarea{min-height:200px}
select{padding:.5rem .75rem;background:var(--bg-primary);border:1px solid var(--border);border-radius:var(--radius);color:var(--text-primary);font-size:.875rem;outline:none;cursor:pointer}
label{font-size:.875rem;font-weight:500;color:var(--text-secondary);display:block;margin-bottom:.375rem}
.split-panes{display:grid;grid-template-columns:1fr 1fr;gap:1rem}@media(max-width:768px){.split-panes{grid-template-columns:1fr}}
.pane-label{font-size:.8125rem;font-weight:600;text-transform:uppercase;letter-spacing:.05em;color:var(--text-muted);margin-bottom:.5rem}
.output-area{background:var(--bg-primary);border:1px solid var(--border);border-radius:var(--radius);padding:1rem;font-family:var(--font-mono);font-size:.875rem;white-space:pre-wrap;word-break:break-all;min-height:100px;max-height:500px;overflow:auto}
.status-msg{padding:.5rem .75rem;border-radius:var(--radius);font-size:.8125rem;margin-top:.75rem}
.status-msg.success{background:rgba(74,222,128,.1);color:var(--success);border:1px solid rgba(74,222,128,.2)}
.status-msg.error{background:rgba(248,113,113,.1);color:var(--error);border:1px solid rgba(248,113,113,.2)}
.sidebar{display:flex;flex-direction:column;gap:1.25rem}
.sidebar-card{background:var(--bg-secondary);border:1px solid var(--border);border-radius:var(--radius-lg);padding:1.25rem}
.sidebar-card h3{font-size:.9375rem;font-weight:600;margin-bottom:.75rem}
.related-tools{display:flex;flex-direction:column;gap:.5rem}
.related-tools a{display:flex;align-items:center;gap:.5rem;color:var(--text-secondary);font-size:.875rem;padding:.375rem .5rem;border-radius:var(--radius);transition:background .2s,color .2s}
.related-tools a:hover{background:var(--accent-dim);color:var(--accent)}
.site-footer{margin-top:auto;background:var(--bg-secondary);border-top:1px solid var(--border);padding:2.5rem 0 1.5rem}
.footer-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(180px,1fr));gap:2rem;margin-bottom:2rem}
.footer-col h4{font-size:.875rem;font-weight:600;margin-bottom:.75rem;color:var(--text-primary)}
.footer-col a{display:block;color:var(--text-secondary);font-size:.8125rem;padding:.25rem 0;transition:color .2s}.footer-col a:hover{color:var(--accent)}
.footer-bottom{border-top:1px solid var(--border);padding-top:1rem;text-align:center;color:var(--text-muted);font-size:.8125rem}
.copy-toast{position:fixed;bottom:2rem;right:2rem;background:var(--accent);color:#0f172a;padding:.75rem 1.25rem;border-radius:var(--radius);font-weight:500;font-size:.875rem;z-index:1000;animation:fadeInUp .3s ease}
@keyframes fadeInUp{from{opacity:0;transform:translateY(10px)}to{opacity:1;transform:translateY(0)}}
.flex{display:flex}.items-center{align-items:center}.justify-between{justify-content:space-between}.gap-1{gap:.5rem}.mt-1{margin-top:.5rem}.mt-2{margin-top:1rem}.mb-1{margin-bottom:.5rem}.hidden{display:none!important}.font-mono{font-family:var(--font-mono)}.text-sm{font-size:.875rem}.text-muted{color:var(--text-muted)}