:root{--font-sans:'Inter',-apple-system,BlinkMacSystemFont,sans-serif;--font-mono:'JetBrains Mono',monospace;--radius:12px;--transition:0.2s ease}
[data-theme="dark"]{--bg:#0F172A;--bg2:#1E293B;--bg-card:rgba(30,41,59,0.8);--bg-input:rgba(51,65,85,0.5);--border:rgba(148,163,184,0.12);--text:#F1F5F9;--text2:#94A3B8;--text3:#64748B;--primary:#14B8A6;--secondary:#64748B;--accent:#8B5CF6;--gradient:linear-gradient(135deg,#14B8A6,#8B5CF6);--glass:rgba(15,23,42,0.6)}
[data-theme="light"]{--bg:#F8FAFC;--bg2:#FFFFFF;--bg-card:rgba(255,255,255,0.9);--bg-input:rgba(241,245,249,0.8);--border:rgba(148,163,184,0.2);--text:#0F172A;--text2:#475569;--text3:#94A3B8;--primary:#0D9488;--secondary:#64748B;--accent:#7C3AED;--gradient:linear-gradient(135deg,#0D9488,#7C3AED);--glass:rgba(248,250,252,0.6)}
*,*::before,*::after{margin:0;padding:0;box-sizing:border-box}
body{font-family:var(--font-sans);background:var(--bg);color:var(--text);min-height:100vh}
.app{display:flex;flex-direction:column;min-height:100vh;max-width:720px;margin:0 auto}
.header{display:flex;align-items:center;justify-content:space-between;padding:16px 24px;border-bottom:1px solid var(--border)}
.logo{display:flex;align-items:center;gap:10px}
.logo h1{font-size:1.05rem;font-weight:700;background:var(--gradient);-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}
.btn{display:inline-flex;align-items:center;gap:6px;font-family:var(--font-sans);font-size:.82rem;font-weight:500;padding:8px 16px;border-radius:8px;border:none;cursor:pointer;transition:all var(--transition);white-space:nowrap}
.btn:disabled{opacity:.4;cursor:not-allowed}
.btn-primary{background:var(--gradient);color:#fff;box-shadow:0 2px 8px rgba(20,184,166,.2);width:100%}
.btn-primary:hover{transform:translateY(-1px);box-shadow:0 4px 16px rgba(20,184,166,.35)}
.btn-ghost{background:transparent;color:var(--text2)}.btn-ghost:hover{color:var(--text);background:var(--bg-input)}
.main{flex:1;padding:24px}
.generator{margin-bottom:32px}
.controls{display:grid;grid-template-columns:1fr 1fr;gap:12px;margin-bottom:16px}
.field{display:flex;flex-direction:column;gap:4px}
.field label{font-size:.72rem;font-weight:600;text-transform:uppercase;letter-spacing:.05em;color:var(--text2)}
.field input,.field select{padding:10px 12px;background:var(--bg-input);color:var(--text);border:1px solid var(--border);border-radius:var(--radius);font-family:var(--font-sans);font-size:.85rem;outline:none}
.field input:focus,.field select:focus{border-color:var(--primary)}
.output{margin-top:20px;display:flex;flex-direction:column;gap:8px}
.alias-row{display:flex;align-items:center;justify-content:space-between;padding:10px 14px;background:var(--bg-card);border:1px solid var(--border);border-radius:var(--radius);transition:all var(--transition);animation:fadeIn .3s ease}
.alias-row:hover{border-color:var(--primary)}
.alias-text{font-family:var(--font-mono);font-size:.85rem;font-weight:500;color:var(--primary)}
.alias-copy{background:transparent;border:none;color:var(--text2);cursor:pointer;padding:4px 8px;border-radius:6px;font-size:.75rem;transition:all var(--transition)}
.alias-copy:hover{background:var(--bg-input);color:var(--text)}
.history-section{border-top:1px solid var(--border);padding-top:20px}
.history-header{display:flex;align-items:center;justify-content:space-between;margin-bottom:12px}
.history-header h2{font-size:.9rem;font-weight:600}
.history-list{display:flex;flex-direction:column;gap:6px}
.history-item{display:flex;align-items:center;justify-content:space-between;padding:8px 12px;background:var(--bg-card);border:1px solid var(--border);border-radius:8px;font-size:.8rem}
.history-item .alias-text{font-size:.78rem}
.history-item .hist-time{font-size:.68rem;color:var(--text3)}
.empty-msg{color:var(--text3);font-size:.82rem;text-align:center;padding:20px}
@keyframes fadeIn{from{opacity:0;transform:translateY(-4px)}to{opacity:1;transform:translateY(0)}}
.toast-container{position:fixed;bottom:20px;right:20px;z-index:300;display:flex;flex-direction:column;gap:8px}
.toast{padding:10px 16px;background:var(--bg2);border:1px solid var(--border);border-radius:8px;box-shadow:0 4px 12px rgba(0,0,0,.2);font-size:.82rem;animation:toastIn .3s ease}
.toast.success{border-left:3px solid var(--primary)}.toast.info{border-left:3px solid var(--accent)}
@keyframes toastIn{from{opacity:0;transform:translateX(20px)}to{opacity:1;transform:translateX(0)}}
[data-theme="dark"] .icon-moon{display:none}[data-theme="dark"] .icon-sun{display:block}
[data-theme="light"] .icon-moon{display:block}[data-theme="light"] .icon-sun{display:none}
@media(max-width:640px){.controls{grid-template-columns:1fr}.main{padding:16px}}