/* color-tools/style.css */
:root{--primary:#3ecf8e;--primary-dark:#2aad72;--primary-light:#d2f5e8;--bg:#f4f6f9;--bg-white:#fff;--border:#e2e8f0;--text-main:#1a202c;--text-sub:#64748b;--text-light:#94a3b8;--radius-md:10px;--shadow-sm:0 1px 3px rgba(0,0,0,.08);--transition:all .2s ease}
*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
body{font-family:-apple-system,BlinkMacSystemFont,"Segoe UI","PingFang SC","Microsoft YaHei",sans-serif;background:var(--bg);color:var(--text-main);font-size:15px;line-height:1.6;min-height:100vh}
a{text-decoration:none;color:inherit}
#header{position:sticky;top:0;z-index:100;height:64px;background:var(--bg-white);border-bottom:1px solid var(--border);box-shadow:var(--shadow-sm);display:flex;align-items:center;padding:0 24px;gap:20px}.header-logo{display:flex;align-items:center;gap:10px;font-size:20px;font-weight:700}.logo-icon{width:36px;height:36px;background:linear-gradient(135deg,var(--primary),var(--primary-dark));border-radius:6px;display:flex;align-items:center;justify-content:center;color:#fff;font-size:18px}.hl{color:var(--primary-dark)}
#main-content{max-width:800px;margin:0 auto;padding:28px 20px 40px}
h1{font-size:22px;font-weight:700;margin-bottom:4px}.subtitle{font-size:13px;color:var(--text-light);margin-bottom:24px}
.tool-grid{display:grid;grid-template-columns:1fr 1fr;gap:20px;margin-bottom:28px}
.panel{background:var(--bg-white);border:1px solid var(--border);border-radius:var(--radius-md);padding:20px}.panel h3{font-size:15px;font-weight:700;margin-bottom:16px;color:var(--text-sub)}
.color-picker{width:80px;height:40px;border:2px solid var(--border);border-radius:8px;cursor:pointer;margin-bottom:12px}.color-preview{width:100%;height:80px;border-radius:var(--radius-md);border:1px solid var(--border);transition:var(--transition)}
.input-group{margin-bottom:12px}.input-group label{display:block;font-size:12px;font-weight:700;color:var(--text-sub);margin-bottom:4px;text-transform:uppercase;letter-spacing:.5px}
.color-input{width:100%;padding:8px 12px;border:1.5px solid var(--border);border-radius:6px;font-family:"Fira Code",Consolas,monospace;font-size:13px;color:var(--text-main)}.color-input:focus{outline:none;border-color:var(--primary)}
.palette-section h3{font-size:15px;font-weight:700;margin-bottom:14px;color:var(--text-sub)}
.palette-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(48px,1fr));gap:8px;margin-bottom:10px}
.palette-swatch{height:48px;border-radius:8px;cursor:pointer;border:2px solid transparent;transition:var(--transition);position:relative}.palette-swatch:hover{border-color:var(--primary);transform:scale(1.1);z-index:1}.palette-swatch .hint{position:absolute;bottom:-22px;left:50%;transform:translateX(-50%);font-size:9px;color:var(--text-light);white-space:nowrap;opacity:0;transition:opacity .15s}.palette-swatch:hover .hint{opacity:1}
@media(max-width:600px){.tool-grid{grid-template-columns:1fr}}