:root{--primary: #6366f1;--primary-hover: #4f46e5;--bg: #f8fafc;--card: #ffffff;--text: #1e293b;--text-light: #64748b;--border: #e2e8f0;--radius: 16px;--shadow: 0 10px 25px -5px rgba(0, 0, 0, .05), 0 8px 10px -6px rgba(0, 0, 0, .05)}*{box-sizing:border-box;margin:0;padding:0;font-family:Inter,system-ui,sans-serif}body{background:var(--bg);color:var(--text)}.app-container{max-width:900px;margin:0 auto;padding:20px;min-height:100vh}.app-header{display:flex;justify-content:space-between;align-items:center;margin-bottom:30px}.logo{display:flex;align-items:center;gap:12px}.logo h1{font-size:20px;font-weight:800;background:linear-gradient(to right,#6366f1,#a855f7);-webkit-background-clip:text;-webkit-text-fill-color:transparent}.cloud-badge{font-size:12px;background:#e0e7ff;color:#4338ca;padding:4px 10px;border-radius:20px;font-weight:500}.category-nav{display:flex;gap:10px;margin-bottom:24px;overflow-x:auto;padding-bottom:8px}.category-nav button{flex:0 0 auto;display:flex;align-items:center;gap:8px;padding:10px 18px;border-radius:12px;border:1px solid var(--border);background:var(--card);cursor:pointer;transition:all .2s;color:var(--text-light);font-weight:500}.category-nav button.active{background:var(--primary);color:#fff;border-color:var(--primary);box-shadow:0 4px 12px #6366f14d}.converter-card{background:var(--card);border-radius:var(--radius);padding:30px;box-shadow:var(--shadow);margin-bottom:24px;border:1px solid rgba(255,255,255,.8);-webkit-backdrop-filter:blur(10px);backdrop-filter:blur(10px)}.input-group{display:flex;align-items:center;gap:20px;margin-bottom:24px}@media (max-width: 640px){.input-group{flex-direction:column}.swap-btn{transform:rotate(90deg)}}.field{flex:1;display:flex;flex-direction:column;gap:8px}.field label{font-size:13px;color:var(--text-light);font-weight:600;text-transform:uppercase;letter-spacing:.5px}.field input,.result-display{width:100%;padding:16px;border-radius:12px;border:2px solid var(--border);font-size:24px;font-weight:700;color:var(--text);transition:border-color .2s}.field input:focus{outline:none;border-color:var(--primary)}.result-display{background:#f1f5f9;border-color:transparent;display:flex;justify-content:space-between;align-items:center}.result-value{overflow:hidden;text-overflow:ellipsis}select{margin-top:8px;padding:8px;border-radius:8px;border:1px solid var(--border);background:#fff;font-size:14px;cursor:pointer}.swap-btn{width:44px;height:44px;border-radius:50%;border:none;background:#f1f5f9;color:var(--primary);display:flex;align-items:center;justify-content:center;cursor:pointer;transition:all .2s}.swap-btn:hover{background:var(--primary);color:#fff;transform:scale(1.1)}.action-bar{display:flex;gap:12px}.btn-primary,.btn-secondary,.btn-ai{display:flex;align-items:center;gap:8px;padding:12px 20px;border-radius:10px;font-weight:600;cursor:pointer;transition:all .2s;border:none}.btn-primary{background:var(--primary);color:#fff}.btn-primary:hover{background:var(--primary-hover);transform:translateY(-2px)}.btn-secondary{background:#f1f5f9;color:var(--text)}.btn-secondary:hover{background:#e2e8f0}.btn-ai{background:#fef3c7;color:#92400e}.ai-box{margin-top:20px;padding:16px;background:#f8fafc;border-left:4px solid #fbbf24;border-radius:8px;font-size:14px;line-height:1.6;color:#475569}.bottom-grid{display:grid;grid-template-columns:1fr 1fr;gap:24px}@media (max-width: 768px){.bottom-grid{grid-template-columns:1fr}}.panel{background:var(--card);border-radius:var(--radius);padding:20px;box-shadow:var(--shadow)}.panel-header{display:flex;justify-content:space-between;align-items:center;margin-bottom:16px}.panel-header h3{display:flex;align-items:center;gap:8px;font-size:16px;color:var(--text)}.panel-header button{background:none;border:none;color:var(--text-light);cursor:pointer}.list{display:flex;flex-direction:column;gap:10px}.list-item{padding:12px;background:#f8fafc;border-radius:8px;font-size:14px}.item-info{display:flex;justify-content:space-between;align-items:center}.item-val{font-weight:600}.item-time{color:var(--text-light);font-size:12px}.fav-chips{display:flex;flex-wrap:wrap;gap:8px}.chip{padding:8px 14px;background:#eff6ff;color:#1d4ed8;border:1px solid #dbeafe;border-radius:20px;font-size:13px;font-weight:500;cursor:pointer;transition:all .2s}.chip:hover{background:#dbeafe;transform:scale(1.05)}.empty{color:var(--text-light);font-size:14px;text-align:center;padding:20px}.loading-screen{height:100vh;display:flex;align-items:center;justify-content:center;font-size:18px;color:var(--primary);font-weight:600}