:root{--bg-primary:#0a0a0f;--bg-secondary:#12121a;--bg-glass:rgba(255,255,255,0.04);--bg-glass-hover:rgba(255,255,255,0.08);--border-glass:rgba(255,255,255,0.08);--border-glass-hover:rgba(255,255,255,0.15);--text-primary:#f0f0f4;--text-secondary:#c8c8d8;--text-muted:#a0a0b0;--accent:#6c5ce7;--accent2:#00cec9;--accent3:#fd79a8;--accent4:#fdcb6e;--success:#00b894;--danger:#e17055;--radius:12px;--radius-lg:16px;--radius-sm:8px}*{margin:0;padding:0;box-sizing:border-box}html{scroll-behavior:smooth}body{font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Helvetica Neue,Arial,sans-serif;background:var(--bg-primary);color:var(--text-primary);min-height:100vh;line-height:1.6}::-webkit-scrollbar{width:6px}::-webkit-scrollbar-track{background:var(--bg-primary)}::-webkit-scrollbar-thumb{background:rgba(255,255,255,.1);border-radius:3px}.app-wrapper{display:flex;flex-direction:column;min-height:100vh}.main-content{flex:1 1;width:100%;max-width:1200px;margin:0 auto;padding:2rem 1.5rem}.glass-card{background:var(--bg-glass);backdrop-filter:blur(20px);-webkit-backdrop-filter:blur(20px);border:1px solid var(--border-glass);border-radius:var(--radius-lg);padding:2rem;transition:all .3s ease}.glass-card:hover{border-color:var(--border-glass-hover);background:var(--bg-glass-hover)}.gradient-text{background:linear-gradient(135deg,var(--accent),var(--accent2),var(--accent3),var(--accent4));-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}.rainbow-border{position:relative}.rainbow-border:before{content:"";position:absolute;inset:-2px;border-radius:var(--radius-lg);background:linear-gradient(135deg,var(--accent),var(--accent2),var(--accent3),var(--accent4));z-index:-1;opacity:.5;transition:opacity .3s ease}.rainbow-border:hover:before{opacity:1}.btn{display:inline-flex;align-items:center;justify-content:center;gap:.5rem;padding:.625rem 1.25rem;border-radius:var(--radius-sm);border:1px solid var(--border-glass);background:var(--bg-glass);color:var(--text-primary);font-size:.875rem;cursor:pointer;transition:all .2s ease;text-decoration:none}.btn:hover{background:var(--bg-glass-hover);border-color:var(--border-glass-hover)}.btn-primary{background:linear-gradient(135deg,var(--accent),var(--accent2));border:none;color:white;font-weight:600}.btn-primary:hover{opacity:.9;transform:translateY(-1px);border:none}.tool-section{margin-bottom:3rem}.section-header{text-align:center;margin-bottom:2rem}.section-header h2{font-size:2rem;font-weight:700;margin-bottom:.5rem}.section-header p{color:var(--text-secondary);font-size:1.05rem}.section-divider{width:60px;height:3px;background:linear-gradient(135deg,var(--accent),var(--accent2),var(--accent3));border-radius:3px;margin:.75rem auto}.color-input-row{display:flex;align-items:center;gap:1rem;margin-bottom:1rem;flex-wrap:wrap}.color-swatch-input{width:48px;height:48px;border:2px solid var(--border-glass);border-radius:var(--radius-sm);cursor:pointer;padding:0;background:none}.color-swatch-input::-webkit-color-swatch-wrapper{padding:2px}.color-swatch-input::-webkit-color-swatch{border:none;border-radius:6px}.color-text-input{flex:1 1;min-width:120px;padding:.75rem 1rem;border-radius:var(--radius-sm);border:1px solid var(--border-glass);background:rgba(255,255,255,.05);color:var(--text-primary);font-size:.95rem;font-family:SF Mono,Fira Code,Cascadia Code,monospace;transition:border-color .2s ease}.color-text-input:focus{outline:none;border-color:var(--accent)}.swatch-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(160px,1fr));grid-gap:1rem;gap:1rem;margin-top:1rem}.color-swatch{border-radius:var(--radius);overflow:hidden;background:var(--bg-glass);border:1px solid var(--border-glass);transition:transform .2s ease}.color-swatch:hover{transform:translateY(-2px)}.swatch-color{height:100px;position:relative}.swatch-info{padding:.75rem}.swatch-code{font-family:SF Mono,Fira Code,Cascadia Code,monospace;font-size:.8rem;color:var(--text-secondary);cursor:pointer;transition:color .2s;display:block;margin-bottom:.15rem}.swatch-code:hover{color:var(--text-primary)}.color-values{display:grid;grid-template-columns:repeat(auto-fit,minmax(140px,1fr));grid-gap:.75rem;gap:.75rem;margin-top:1.5rem}.color-value-item{background:rgba(255,255,255,.03);border:1px solid var(--border-glass);border-radius:var(--radius);padding:1rem;text-align:center;cursor:pointer;transition:all .2s ease}.color-value-item:hover{background:rgba(255,255,255,.06);border-color:var(--accent)}.color-value-label{font-size:.75rem;text-transform:uppercase;letter-spacing:.05em;color:var(--text-muted);margin-bottom:.35rem}.color-value{font-family:SF Mono,Fira Code,Cascadia Code,monospace}.color-value,.copy-toast{font-size:.9rem;color:var(--text-primary)}.copy-toast{position:fixed;bottom:2rem;left:50%;transform:translateX(-50%);background:var(--bg-glass);-webkit-backdrop-filter:blur(20px);backdrop-filter:blur(20px);border:1px solid var(--border-glass);border-radius:var(--radius);padding:.75rem 1.5rem;z-index:1000;animation:toastIn .3s ease,toastOut .3s ease 1.7s}@keyframes toastIn{0%{opacity:0;transform:translateX(-50%) translateY(10px)}to{opacity:1;transform:translateX(-50%) translateY(0)}}@keyframes toastOut{0%{opacity:1}to{opacity:0}}.gradient-preview{width:100%;height:200px;border-radius:var(--radius);margin:1.5rem 0;border:1px solid var(--border-glass)}.gradient-controls{display:grid;grid-template-columns:1fr 1fr;grid-gap:1rem;gap:1rem;margin-bottom:1.5rem}@media (max-width:600px){.gradient-controls{grid-template-columns:1fr}}.direction-select{width:100%;padding:.75rem 1rem;border-radius:var(--radius-sm);border:1px solid var(--border-glass);background:rgba(255,255,255,.05);color:var(--text-primary);font-size:.95rem;cursor:pointer;transition:border-color .2s}.direction-select:focus{outline:none;border-color:var(--accent)}.direction-select option{background:#1a1a2e}.contrast-preview{display:flex;align-items:center;justify-content:center;padding:3rem 2rem;border-radius:var(--radius);margin:1.5rem 0;font-size:1.5rem;font-weight:700;text-align:center;border:1px solid var(--border-glass);min-height:120px}.contrast-result{display:grid;grid-template-columns:1fr 1fr;grid-gap:1rem;gap:1rem;margin-top:1.5rem}@media (max-width:500px){.contrast-result{grid-template-columns:1fr}}.contrast-item{background:rgba(255,255,255,.03);border:1px solid var(--border-glass);border-radius:var(--radius);padding:1.25rem;text-align:center}.contrast-ratio-number{font-size:2.5rem;font-weight:700;background:linear-gradient(135deg,var(--accent),var(--accent2));-webkit-background-clip:text;-webkit-text-fill-color:transparent;background-clip:text}.contrast-label{font-size:.85rem;color:var(--text-secondary);margin-bottom:.5rem}.badge{display:inline-block;padding:.25rem .75rem;border-radius:20px;font-size:.8rem;font-weight:600}.badge-pass{background:rgba(0,184,148,.15);color:var(--success);border:1px solid rgba(0,184,148,.3)}.badge-fail{background:rgba(225,112,85,.15);color:var(--danger);border:1px solid rgba(225,112,85,.3)}.header{backdrop-filter:blur(20px);-webkit-backdrop-filter:blur(20px);background:rgba(10,10,15,.8);border-bottom:1px solid var(--border-glass);position:-webkit-sticky;position:sticky;top:0;z-index:100}.header-inner{max-width:1200px;margin:0 auto;padding:0 1.5rem;display:flex;align-items:center;justify-content:space-between;height:64px}.header-logo{font-size:1.35rem;font-weight:800;text-decoration:none;letter-spacing:-.02em}.header-portal{display:inline-flex;align-items:center;font-size:.78rem;color:var(--text-muted);text-decoration:none;margin-left:.75rem;padding:.2rem .55rem;border-radius:6px;border:1px solid var(--border-glass);transition:all .2s ease}.header-portal:hover{color:var(--accent2);border-color:var(--accent2)}.header-nav{display:flex;align-items:center;gap:.25rem}.header-nav a{padding:.5rem .85rem;border-radius:var(--radius-sm);color:var(--text-secondary);text-decoration:none;font-size:.875rem;transition:all .2s ease}.header-nav a.active,.header-nav a:hover{color:var(--text-primary);background:var(--bg-glass)}.lang-btn{padding:.5rem .85rem;border-radius:var(--radius-sm);border:1px solid var(--border-glass);background:var(--bg-glass);color:var(--text-secondary);font-size:.8rem;cursor:pointer;transition:all .2s ease;margin-left:.5rem}.lang-btn:hover{color:var(--text-primary);border-color:var(--border-glass-hover)}.mobile-menu-btn{display:none;background:none;border:none;color:var(--text-primary);font-size:1.5rem;cursor:pointer;padding:.25rem}@media (max-width:768px){.header-nav{display:none;position:absolute;top:64px;left:0;right:0;flex-direction:column;background:rgba(10,10,15,.95);-webkit-backdrop-filter:blur(20px);backdrop-filter:blur(20px);border-bottom:1px solid var(--border-glass);padding:1rem;gap:.5rem}.header-nav.open{display:flex}.header-nav a{width:100%;padding:.75rem 1rem}.lang-btn{width:100%;margin-left:0;text-align:center}.mobile-menu-btn{display:block}}.footer{border-top:1px solid var(--border-glass);padding:1.5rem;text-align:center}.footer a{color:var(--accent2);text-decoration:none;font-weight:600;transition:opacity .2s}.footer a:hover{opacity:.8}.footer-text{color:var(--text-muted);font-size:.875rem}.hero{text-align:center;padding:3rem 1rem 2rem}.hero h1{font-size:3.5rem;font-weight:800;letter-spacing:-.03em;margin-bottom:.5rem}.hero p.subtitle{font-size:1.2rem;color:var(--text-secondary);margin-bottom:1rem}.hero p.desc{color:var(--text-muted);max-width:600px;margin:0 auto;font-size:.95rem}@media (max-width:600px){.hero h1{font-size:2.5rem}}.tool-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(240px,1fr));grid-gap:1.25rem;gap:1.25rem;margin-top:2rem}.tool-card{display:flex;flex-direction:column;align-items:center;text-align:center;padding:2rem 1.5rem;border-radius:var(--radius-lg);background:var(--bg-glass);border:1px solid var(--border-glass);text-decoration:none;color:var(--text-primary);transition:all .3s ease}.tool-card:hover{transform:translateY(-4px);border-color:var(--border-glass-hover);background:var(--bg-glass-hover)}.tool-card-icon{font-size:2.5rem;margin-bottom:1rem}.tool-card h3{font-size:1.1rem;font-weight:600;margin-bottom:.5rem}.tool-card p{font-size:.85rem;color:var(--text-secondary)}.section-anchor{scroll-margin-top:80px}