@import url('https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600;700;800&display=swap');
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
:root{--primary:#3B82F6;--secondary:#60A5FA;--accent:#93C5FD;--bg:#0F172A;--surface:#1E293B;--surface2:#334155;--text:#E2E8F0;--text-dim:#94A3B8;--border:#334155;--success:#22C55E;--error:#EF4444;--warning:#FBBF24;--radius:12px;--font:'Inter',system-ui,sans-serif}
html{font-family:var(--font);background:var(--bg);color:var(--text);line-height:1.6}
body{min-height:100vh;display:flex;flex-direction:column}
.header{padding:.75rem 1.25rem;display:flex;align-items:center;justify-content:space-between;border-bottom:1px solid var(--border);flex-wrap:wrap;gap:.5rem}
.header h1{font-size:1rem;font-weight:800;background:linear-gradient(135deg,var(--primary),var(--accent));-webkit-background-clip:text;-webkit-text-fill-color:transparent}
.header-actions{display:flex;gap:.3rem}
.btn{padding:.35rem .7rem;border-radius:8px;font-size:.72rem;font-weight:600;cursor:pointer;border:none;transition:all .15s;font-family:var(--font)}
.btn-primary{background:var(--primary);color:#fff}.btn-primary:hover{opacity:.85}
.btn-ghost{background:transparent;border:1px solid var(--border);color:var(--text-dim)}.btn-ghost:hover{background:var(--surface2);color:var(--text)}
.main{flex:1;max-width:700px;width:100%;margin:0 auto;padding:1.25rem;display:flex;flex-direction:column;gap:.75rem}
.section{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius);padding:.8rem}
.section h3{font-size:.75rem;font-weight:700;color:var(--text-dim);margin-bottom:.5rem}
.field{margin-bottom:.4rem}
.field label{font-size:.68rem;font-weight:600;color:var(--text-dim);display:block;margin-bottom:.15rem}
.input{width:100%;padding:.4rem .6rem;border-radius:8px;border:1px solid var(--border);background:var(--surface2);color:var(--text);font-size:.78rem;outline:none;font-family:var(--font)}
.input:focus{border-color:var(--primary)}
.field-row{display:grid;grid-template-columns:1fr 1fr;gap:.4rem}
.check{display:flex;align-items:center;gap:.3rem;font-size:.72rem;color:var(--text-dim);cursor:pointer;margin-top:.3rem}
/* Results */
.result-item{display:flex;align-items:center;gap:.4rem;padding:.4rem .5rem;border-radius:8px;font-size:.75rem;margin-bottom:.3rem}
.result-pass{background:rgba(34,197,94,.08);border:1px solid rgba(34,197,94,.2)}
.result-fail{background:rgba(239,68,68,.08);border:1px solid rgba(239,68,68,.2)}
.result-warn{background:rgba(251,191,36,.08);border:1px solid rgba(251,191,36,.2)}
.result-icon{font-size:.9rem}
.result-text{flex:1;font-size:.72rem;color:var(--text)}
/* Tabs */
.tabs{display:flex;gap:2px;margin-bottom:.4rem}
.fw-tab{padding:.3rem .5rem;border-radius:6px;border:none;background:transparent;color:var(--text-dim);font-size:.68rem;font-weight:600;cursor:pointer;font-family:var(--font);transition:all .15s}
.fw-tab.active{background:var(--primary);color:#fff}
.code-output{background:var(--bg);border:1px solid var(--border);border-radius:8px;padding:.5rem;font-family:'Courier New',monospace;font-size:.72rem;color:var(--accent);overflow-x:auto;white-space:pre-wrap;margin:0;line-height:1.5}
.toast{position:fixed;bottom:1.5rem;right:1.5rem;background:var(--surface);border:1px solid var(--primary);color:var(--primary);padding:.4rem .8rem;border-radius:8px;font-size:.72rem;z-index:200;transform:translateY(80px);opacity:0;transition:all .3s}
.toast.show{transform:translateY(0);opacity:1}