:root{--font-family:-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,"Helvetica Neue",Arial,sans-serif;--font-mono:ui-monospace,SFMono-Regular,"SF Mono",Menlo,Consolas,"Liberation Mono",monospace;--radius:8px;--transition:all 0.2s cubic-bezier(0.16,1,0.3,1);--bg-app:#f8fafc;--bg-card:#ffffff;--bg-input:#f1f5f9;--border-color:#e2e8f0;--border-focus:#14b8a6;--text-main:#0f172a;--text-muted:#64748b;--text-dim:#94a3b8;--accent-color:#14b8a6;--accent-hover:#0d9488;--accent-soft:rgba(20,184,166,0.12)}*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}body{font-family:var(--font-family);background-color:var(--bg-app);color:var(--text-main);min-height:100vh;line-height:1.5;-webkit-font-smoothing:antialiased}.app-container{max-width:1024px;margin:0 auto;padding:2.5rem 1.5rem 3.5rem 1.5rem;display:flex;flex-direction:column;gap:1.75rem}.app-header{display:flex;justify-content:space-between;align-items:center;gap:1rem;padding-bottom:1.25rem;border-bottom:1px solid var(--border-color)}.logo-group{display:flex;align-items:center;gap:0.85rem}.app-header h1{font-size:1.45rem;font-weight:700;letter-spacing:-0.02em;color:var(--text-main)}.subtitle{font-size:0.85rem;color:var(--text-muted)}.omni-section{display:flex;flex-direction:column;gap:0.5rem}.omni-box{background:var(--bg-card);border:1.5px solid var(--border-color);border-radius:var(--radius);padding:0.65rem 0.9rem;transition:var(--transition)}.omni-box:focus-within{border-color:var(--border-focus)}.omni-input-wrapper{display:flex;align-items:center;gap:0.75rem}.color-preview-pipette{position:relative;width:38px;height:38px;border-radius:var(--radius);overflow:hidden;flex-shrink:0;cursor:pointer;border:1.5px solid rgba(0,0,0,0.08);background-color:var(--accent-color);transition:transform 0.15s ease}.color-preview-pipette:hover{transform:scale(1.06)}.color-preview-pipette input[type="color"]{position:absolute;top:-10px;left:-10px;width:60px;height:60px;opacity:0;cursor:pointer}.omni-input{flex:1;background:transparent;border:none;font-family:var(--font-mono);font-size:1.15rem;font-weight:600;color:var(--text-main);outline:none}.omni-input::placeholder{color:var(--text-dim);font-weight:400;font-size:0.95rem}.format-badge{background:var(--accent-soft);color:var(--accent-hover);font-size:0.75rem;font-weight:700;text-transform:uppercase;letter-spacing:0.5px;padding:4px 10px;border-radius:var(--radius);border:1px solid rgba(20,184,166,0.25);user-select:none;flex-shrink:0}.input-error-notice{font-size:0.82rem;color:#ef4444;padding-left:0.5rem}.hidden{display:none !important}.preview-section{display:flex;flex-direction:column}.preview-card{background:var(--bg-card);border:1px solid var(--border-color);border-radius:var(--radius);overflow:hidden;transition:var(--transition)}.preview-card:hover{border-color:rgba(20,184,166,0.4)}.preview-checkerboard{position:relative;width:100%;height:110px;background-image:linear-gradient(45deg,#e2e8f0 25%,transparent 25%),linear-gradient(-45deg,#e2e8f0 25%,transparent 25%),linear-gradient(45deg,transparent 75%,#e2e8f0 75%),linear-gradient(-45deg,transparent 75%,#e2e8f0 75%);background-size:16px 16px;background-position:0 0,0 8px,8px -8px,-8px 0px;background-color:#f8fafc}.preview-swatch-fill{width:100%;height:100%;display:flex;align-items:flex-end;justify-content:flex-end;padding:0.75rem 1rem;transition:background-color 0.15s ease}.preview-contrast-chips{display:flex;gap:0.5rem}.chip-contrast{font-size:0.78rem;font-weight:600;padding:4px 10px;border-radius:var(--radius);user-select:none}.chip-white{color:#ffffff;background:rgba(0,0,0,0.32);border:1px solid rgba(255,255,255,0.25)}.chip-black{color:#0f172a;background:rgba(255,255,255,0.55);border:1px solid rgba(0,0,0,0.1)}.preview-meta-bar{display:flex;justify-content:space-between;align-items:center;padding:0.75rem 1rem;border-top:1px solid var(--border-color);background:#ffffff}.preview-color-name-group{display:flex;flex-direction:column;gap:1px}.preview-label{font-size:0.7rem;text-transform:uppercase;letter-spacing:0.5px;color:var(--text-dim);font-weight:700}.preview-color-name{font-size:1.1rem;font-weight:700;color:var(--text-main);text-transform:capitalize}.preview-badges-group{display:flex;gap:0.5rem;align-items:center;flex-wrap:wrap}.preview-code-badge{font-family:var(--font-mono);font-size:0.85rem;font-weight:600;padding:4px 10px;border-radius:var(--radius);background:var(--bg-input);border:1px solid var(--border-color);color:var(--text-muted)}.formats-panel{display:flex;flex-direction:column;gap:1rem}.section-title-row{display:flex;justify-content:space-between;align-items:baseline;padding-top:0.25rem}.section-title-row h2{font-size:1.15rem;font-weight:700;color:var(--text-main)}.hint-text{font-size:0.8rem;color:var(--text-dim)}.format-cards-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(240px,1fr));gap:0.85rem}.format-card{background:var(--bg-card);border:1px solid var(--border-color);border-radius:var(--radius);padding:0.85rem 1rem;display:flex;flex-direction:column;gap:0.5rem;transition:var(--transition)}.format-card:hover{border-color:rgba(20,184,166,0.45)}.format-header{display:flex;justify-content:space-between;align-items:center}.format-tag{font-size:0.76rem;font-weight:700;text-transform:uppercase;letter-spacing:0.5px;color:var(--text-muted)}.copy-btn{background:transparent;border:none;font-size:0.75rem;font-weight:600;color:var(--text-dim);cursor:pointer;padding:3px 8px;border-radius:var(--radius);transition:var(--transition)}.format-card:hover .copy-btn{color:var(--accent-hover)}.copy-btn:hover{background:var(--accent-soft);color:var(--accent-hover)}.copy-btn.copied{color:var(--accent-hover)!important;background:var(--accent-soft)!important}.format-input{width:100%;background:var(--bg-input);border:1px solid var(--border-color);border-radius:var(--radius);padding:0.5rem 0.65rem;font-family:var(--font-mono);font-size:0.95rem;font-weight:500;color:var(--text-main);outline:none;transition:var(--transition)}.format-input:focus{border-color:var(--border-focus);background:#ffffff}.toast-container{position:fixed;bottom:24px;left:50%;transform:translateX(-50%);display:flex;flex-direction:column;gap:8px;z-index:1000;pointer-events:none}.toast{padding:9px 18px;background:#0f172a;color:#f8fafc;border-radius:var(--radius);font-size:0.86rem;font-weight:500;border:1px solid rgba(255,255,255,0.1);display:flex;align-items:center;gap:8px;animation:slideUp 0.2s cubic-bezier(0.16,1,0.3,1),fadeOut 0.25s ease 1.75s forwards;pointer-events:auto}@keyframes slideUp{from{transform:translateY(12px);opacity:0}to{transform:translateY(0);opacity:1}}@keyframes fadeOut{from{opacity:1}to{opacity:0}}@media(max-width:640px){.app-container{padding:1.25rem 1rem 2rem 1rem;gap:1.25rem}.omni-input{font-size:1rem}.preview-checkerboard{height:90px}.preview-meta-bar{flex-direction:column;align-items:flex-start;gap:0.5rem}.format-cards-grid{grid-template-columns:1fr}}