:root{--primary: #4a90d9;--primary-dark: #357abd;--bg: #1a1a2e;--bg-light: #16213e;--text: #e8e8e8;--text-dim: #888;--border: #333;--success: #4caf50;--error: #f44336}*{box-sizing:border-box}body{background:var(--bg);color:var(--text);font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,sans-serif;line-height:1.5}button{background:var(--primary);color:#fff;border:none;padding:.5rem 1rem;border-radius:4px;cursor:pointer;font-size:.9rem}button:hover{background:var(--primary-dark)}button:disabled{opacity:.5;cursor:not-allowed}input{background:var(--bg-light);color:var(--text);border:1px solid var(--border);padding:.75rem;border-radius:4px;font-size:1rem;width:100%}input:focus{outline:none;border-color:var(--primary)}.login-page{min-height:100vh;display:flex;align-items:center;justify-content:center}.login-container{background:var(--bg-light);padding:2rem;border-radius:8px;width:100%;max-width:400px;text-align:center}.login-container h1{margin-bottom:.5rem}.login-container .tagline{color:var(--text-dim);margin-bottom:2rem}.login-container form{display:flex;flex-direction:column;gap:1rem}.login-container .error{color:var(--error);font-size:.9rem}.toggle-auth{margin-top:1rem;color:var(--text-dim)}.toggle-auth button{background:none;color:var(--primary);padding:0;margin-left:.5rem}.home-page,.playlist-page{max-width:1000px;margin:0 auto;padding:1rem}header{display:flex;justify-content:space-between;align-items:center;margin-bottom:2rem;padding-bottom:1rem;border-bottom:1px solid var(--border)}.user-info{display:flex;align-items:center;gap:1rem}.user-info span{color:var(--text-dim)}.create-bubble{background:var(--bg-light);padding:2rem;border-radius:8px}.create-bubble h2,.create-bubble input,.archetype-selector{margin-bottom:1rem}.archetype-selector label{display:block;margin-bottom:.5rem;color:var(--text-dim)}.archetype-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(180px,1fr));gap:.5rem;margin-bottom:.5rem}.archetype-item{background:var(--bg);padding:.75rem;border-radius:4px;cursor:pointer;border:2px solid transparent;transition:border-color .2s}.archetype-item:hover{border-color:var(--primary)}.archetype-item.selected{border-color:var(--success);background:#4caf501a}.archetype-item .icon{font-size:1.5rem;margin-right:.5rem}.archetype-item .name{font-weight:500}.archetype-item .desc{display:block;font-size:.8rem;color:var(--text-dim);margin-top:.25rem}.archetype-selector .hint{font-size:.85rem;color:var(--text-dim)}.bubble-list{display:grid;gap:1rem}.bubble-item{background:var(--bg-light);padding:1rem;border-radius:8px;cursor:pointer;transition:transform .2s}.bubble-item:hover{transform:translate(4px)}.bubble-item h3{margin-bottom:.25rem}.bubble-item p{color:var(--text-dim);font-size:.9rem}.bubble-item .date{font-size:.8rem;color:var(--text-dim)}.empty{text-align:center;color:var(--text-dim);padding:3rem}.bubble-window{height:100vh;display:flex;flex-direction:column;background:var(--bg)}.bubble-window header{padding:1rem;margin:0;border-bottom:1px solid var(--border)}.bubble-window .content{flex:1;display:flex;overflow:hidden}.messages-panel{flex:1;display:flex;flex-direction:column}.messages{flex:1;overflow-y:auto;padding:1rem}.message{margin-bottom:1rem;padding:.75rem;border-radius:8px;max-width:80%}.message.user{background:var(--primary);margin-left:auto}.message.ai{background:var(--bg-light)}.message.system{background:var(--bg-light);border-left:3px solid var(--primary)}.message .author{font-size:.8rem;color:var(--text-dim);margin-bottom:.25rem}.message.user .author{color:#ffffffb3}.message .time{font-size:.75rem;color:var(--text-dim);margin-top:.25rem;text-align:right}.input-area{display:flex;padding:1rem;gap:.5rem;border-top:1px solid var(--border)}.input-area input{flex:1}.similar-panel{width:300px;border-left:1px solid var(--border);padding:1rem;overflow-y:auto}.similar-panel h3{font-size:.9rem;color:var(--text-dim);margin-bottom:1rem}.similar-item{background:var(--bg-light);padding:.75rem;border-radius:4px;margin-bottom:.5rem;font-size:.9rem}.similar-item .author{font-size:.8rem;color:var(--primary);margin-bottom:.25rem}.similar-item p{color:var(--text-dim)}.loading{display:flex;align-items:center;justify-content:center;min-height:100vh;color:var(--text-dim)}.content-loading{display:flex;align-items:center;gap:.75rem;padding:1.5rem;margin:1rem 0;background:var(--bg-light);border-radius:8px;color:var(--text-dim)}.loading-spinner{width:20px;height:20px;border:2px solid var(--border);border-top-color:var(--primary);border-radius:50%;animation:spin 1s linear infinite}@keyframes spin{to{transform:rotate(360deg)}}