:root{--accent:#48d597;--accent-hover:#3bc284;--bg-dark:#111;--bg-dark-alt:#1a1a1a;--bg-light:#f5f5f5;--white:#fff;--text-on-dark:#fff;--text-on-light:#111;--text-muted:#999;--border-subtle:#333;--font-family:'Inter','Helvetica Neue',Helvetica,Arial,sans-serif;--radius:8px;--radius-lg:12px;--max-width:1200px}.tool-header{padding:48px 0 32px;text-align:center}.tool-header .badge{display:inline-block;background:rgba(72,213,151,.1);color:var(--accent);font-size:13px;font-weight:600;padding:6px 16px;border-radius:999px;margin-bottom:16px;letter-spacing:.5px;text-transform:uppercase}.tool-header h1{font-size:40px;font-weight:700;text-transform:uppercase;letter-spacing:-.5px;margin-bottom:12px}.tool-header p{color:var(--text-muted);font-size:18px;max-width:600px;margin:0 auto}.card{background:var(--bg-dark-alt);border-radius:var(--radius-lg);padding:32px;border:1px solid var(--border-subtle);transition:border-color .2s}.card:hover{border-color:rgba(72,213,151,.3)}label{display:block;font-size:14px;font-weight:600;margin-bottom:6px;color:var(--text-on-dark)}label .hint{font-weight:400;color:var(--text-muted);font-size:13px}input[type=text],input[type=url],input[type=number],input[type=email],input[type=tel],textarea,select{width:100%;padding:12px 16px;background:var(--bg-dark);border:1px solid var(--border-subtle);border-radius:var(--radius);color:var(--text-on-dark);font-family:var(--font-family);font-size:15px;transition:border-color .2s}input:focus,textarea:focus,select:focus{outline:none;border-color:var(--accent)}input::placeholder,textarea::placeholder{color:#555}select{cursor:pointer;appearance:none;background-image:url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='8'%3E%3Cpath d='M1 1l5 5 5-5' stroke='%23999' stroke-width='1.5' fill='none'/%3E%3C/svg%3E");background-repeat:no-repeat;background-position:right 16px center;padding-right:40px}.form-group{margin-bottom:20px}.form-row{display:grid;grid-template-columns:1fr 1fr;gap:16px}@media (max-width:600px){.form-row{grid-template-columns:1fr}}.btn{display:inline-flex;align-items:center;gap:8px;padding:12px 32px;border-radius:999px;font-family:var(--font-family);font-size:15px;font-weight:600;cursor:pointer;border:none;transition:all .2s}.btn-primary{background:var(--accent);color:var(--bg-dark)}.btn-primary:hover{background:var(--accent-hover);transform:translateY(-1px)}.btn-secondary{background:0 0;color:var(--white);border:1px solid var(--white)}.btn-secondary:hover{background:rgba(255,255,255,.05)}.btn-ghost{background:0 0;color:var(--accent);padding:8px 16px}.btn-ghost:hover{background:rgba(72,213,151,.1)}.btn-sm{padding:8px 20px;font-size:13px}.output-block{background:var(--bg-dark);border:1px solid var(--border-subtle);border-radius:var(--radius);padding:20px;font-family:'SF Mono','Fira Code','Consolas',monospace;font-size:14px;line-height:1.6;overflow-x:auto;white-space:pre-wrap;word-break:break-all;position:relative}.copy-btn{position:absolute;top:12px;right:12px;background:var(--bg-dark-alt);border:1px solid var(--border-subtle);color:var(--text-muted);padding:6px 14px;border-radius:6px;font-size:12px;font-weight:500;cursor:pointer;transition:all .2s}.copy-btn:hover{border-color:var(--accent);color:var(--accent)}.copy-btn.copied{border-color:var(--accent);color:var(--accent)}.status-pass{color:var(--accent)}.status-fail{color:#ff6b6b}.status-warn{color:#ffd93d}.tabs{display:flex;gap:4px;border-bottom:1px solid var(--border-subtle);margin-bottom:24px}.tab{padding:10px 20px;background:0 0;border:none;color:var(--text-muted);font-family:var(--font-family);font-size:14px;font-weight:500;cursor:pointer;border-bottom:2px solid transparent;transition:all .2s;margin-bottom:-1px}.tab:hover{color:var(--text-on-dark)}.tab.active{color:var(--accent);border-bottom-color:var(--accent)}.tool-footer{text-align:center;padding:64px 0;border-top:1px solid var(--border-subtle);margin-top:64px}.tool-footer p{color:var(--text-muted);margin-bottom:20px;font-size:18px}.tool-footer .highlight{color:var(--accent);font-weight:600}@media (max-width:768px){.tool-header h1{font-size:28px}.tool-header p{font-size:16px}.card{padding:24px}}