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24px}.tool-container{max-width:1200px;margin:0 auto;padding:40px 24px}.tool-header{margin-bottom:16px;padding-bottom:12px;border-bottom:1px solid var(--border)}.tool-header h1{font-size:1.25rem;color:var(--text-primary);margin-bottom:4px;font-weight:600;letter-spacing:-.02em}.tool-header p{font-size:.875rem;color:var(--gray-600);margin:0}.card{background:var(--bg-primary);border-radius:var(--radius-lg);padding:24px;box-shadow:var(--shadow-sm);margin-bottom:20px;border:1px solid var(--border);transition:all .2s ease}.card:hover{box-shadow:var(--shadow-md);border-color:var(--gray-300)}.btn{padding:10px 20px;border:none;border-radius:var(--radius-md);font-size:.9375rem;font-weight:500;font-family:var(--font-family);cursor:pointer;transition:all .15s ease;display:inline-flex;align-items:center;gap:8px;line-height:1;text-decoration:none;white-space:nowrap}.btn:disabled{opacity:.5;cursor:not-allowed}.btn-primary{background:var(--primary);color:#fff;box-shadow:var(--shadow-xs)}.btn-primary:hover:not(:disabled){background:var(--accent-dark);box-shadow:var(--shadow-sm);transform:translateY(-1px)}.btn-primary:active:not(:disabled){transform:translateY(0)}.btn-secondary{background:var(--bg-tertiary);color:var(--text-primary);border:1px solid var(--border)}.btn-secondary:hover:not(:disabled){background:var(--gray-200);border-color:var(--gray-300)}.btn-outline{background:transparent;color:var(--primary);border:1px solid var(--primary)}.btn-outline:hover:not(:disabled){background:var(--primary);color:#fff}.input-group{margin-bottom:20px}.input-group label{display:block;margin-bottom:8px;font-weight:500;color:var(--text-primary);font-size:.875rem}input[type=text],input[type=number],input[type=email],input[type=url],textarea,select{width:100%;padding:10px 14px;border:1px solid var(--border);border-radius:var(--radius-md);font-size:.9375rem;font-family:var(--font-family);transition:all .15s ease;background:var(--bg-primary);color:var(--text-primary)}input:focus,textarea:focus,select:focus{outline:none;border-color:var(--primary);box-shadow:0 0 0 3px #635bff1a}input:hover,textarea:hover,select:hover{border-color:var(--gray-300)}textarea{resize:vertical;min-height:120px;font-family:var(--font-mono);font-size:.875rem;line-height:1.6}.file-upload{border:2px dashed var(--border);border-radius:var(--radius-lg);padding:48px 24px;text-align:center;cursor:pointer;transition:all .2s ease;background:var(--bg-primary)}.file-upload:hover{border-color:var(--primary);background:#635bff05}.file-upload input{display:none}.result-box{background:var(--bg-tertiary);border:1px solid var(--border);border-radius:var(--radius-md);padding:16px;margin-top:16px;max-height:500px;overflow-y:auto}.result-box pre{margin:0;white-space:pre-wrap;font-family:var(--font-mono);font-size:.875rem;line-height:1.6;color:var(--text-primary)}.alert{padding:14px 16px;border-radius:var(--radius-md);margin-bottom:20px;border:1px solid;display:flex;align-items:flex-start;gap:12px;font-size:.9375rem}.alert-success{background:#f0fdf4;color:#166534;border-color:#bbf7d0}.alert-error{background:#fef2f2;color:#991b1b;border-color:#fecaca}.alert-info{background:#eff6ff;color:#1e40af;border-color:#bfdbfe}.alert-warning{background:#fffbeb;color:#92400e;border-color:#fde68a}.grid{display:grid;gap:20px}.grid-2{grid-template-columns:repeat(auto-fit,minmax(300px,1fr))}.grid-3{grid-template-columns:repeat(auto-fit,minmax(250px,1fr))}.grid-4{grid-template-columns:repeat(auto-fit,minmax(200px,1fr))}.flex{display:flex;gap:12px;flex-wrap:wrap}.flex-center{justify-content:center;align-items:center}.flex-between{justify-content:space-between;align-items:center}.text-center{text-align:center}.spinner{border:3px solid var(--gray-200);border-top:3px solid var(--primary);border-radius:50%;width:40px;height:40px;animation:spin 1s linear infinite}@keyframes spin{0%{transform:rotate(0)}to{transform:rotate(360deg)}}*{transition-timing-function:cubic-bezier(.4,0,.2,1)}@media (max-width: 1024px){:root{--sidebar-width: 240px}h1{font-size:1.875rem}h2{font-size:1.5rem}}@media (max-width: 768px){.tool-header{margin-bottom:12px;padding-bottom:8px}.tool-header h1{font-size:1.125rem}.tool-header p{font-size:.8125rem}.card{padding:16px}.tool-container{padding:16px 12px}.grid-2,.grid-3,.grid-4{grid-template-columns:1fr}}@media (max-width: 480px){html{font-size:14px}.btn{padding:9px 16px;font-size:.875rem}}