:root{--bg-dark: #121212;--card-dark: #1e1e1e;--text-light: #e0e0e0;--text-muted: #888;--accent-red: #c4151a;--accent-blue: #2563eb;--border-color: #333;--sidebar-width: 275px}*{box-sizing:border-box;margin:0;padding:0}body{font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Helvetica,Arial,sans-serif;background-color:var(--bg-dark);color:var(--text-light);display:flex;height:100vh;width:100vw;overflow:hidden}#root{width:100%;height:100%}#app-container{display:flex;width:100%;height:100%}#sidebar{width:var(--sidebar-width);height:100%;background-color:var(--card-dark);border-right:1px solid var(--border-color);padding:1.5rem 1rem;display:flex;flex-direction:column;gap:1.5rem}#sidebar h2{color:var(--accent-red);font-size:1.5rem;text-align:center}#system-prompt{background-color:var(--bg-dark);color:var(--text-light);border:1px solid var(--border-color);border-radius:8px;padding:.5rem;font-family:inherit;resize:vertical;width:100%}#provider-tabs{display:flex;width:100%;border-radius:8px;border:1px solid var(--border-color);overflow:hidden}#provider-tabs button{flex-grow:1;background:var(--bg-dark);border:none;border-right:1px solid var(--border-color);color:var(--text-muted);padding:.6rem;cursor:pointer;transition:all .2s;font-size:1.1rem;font-weight:700}#provider-tabs button:last-child{border-right:none}#provider-tabs button:hover{background-color:#2a2a2a}#provider-tabs button.active{background-color:var(--accent-blue);color:#fff}#my-models-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(80px,1fr));gap:.5rem;flex-grow:1;overflow-y:auto;align-content:flex-start}.model-cell{width:100%;height:64px;border:2px solid var(--border-color);border-radius:8px;display:flex;align-items:center;justify-content:center;font-size:.8rem;text-align:center;cursor:pointer;transition:all .2s;word-break:break-word;padding:4px}.model-cell.selected{border-color:var(--accent-blue);background-color:#2562eb2a}.model-cell.add-model{border-style:dashed;color:var(--text-muted);font-size:2rem}.model-cell.add-model:hover{border-color:var(--accent-blue);color:var(--text-light)}#chat-container{flex-grow:1;display:flex;flex-direction:column;height:100%;padding:1rem;max-width:900px;margin:0 auto;width:100%}#message-list{flex-grow:1;overflow-y:auto;padding:0 1rem;display:flex;flex-direction:column;gap:1rem}.message{max-width:80%;padding:.8rem 1.2rem;border-radius:12px;line-height:1.5}.message p{margin:0}.message.user{background-color:var(--accent-blue);color:#fff;align-self:flex-end;border-bottom-right-radius:0}.message.assistant{background-color:var(--card-dark);color:var(--text-light);align-self:flex-start;border-bottom-left-radius:0}#chat-form{display:flex;gap:1rem;padding-top:1rem;border-top:1px solid var(--border-color)}#chat-input{flex-grow:1;background-color:var(--card-dark);color:var(--text-light);border:1px solid var(--border-color);border-radius:8px;padding:.8rem;font-size:1rem}#chat-input:focus{outline:none;border-color:var(--accent-blue)}#send-button{background-color:var(--accent-red);color:#fff;border:none;border-radius:8px;width:48px;font-size:1.5rem;cursor:pointer;transition:background-color .2s;display:flex;align-items:center;justify-content:center}#send-button:hover{background-color:var(--accent-red);opacity:.9}#send-button:disabled{background-color:#555;cursor:not-allowed}.modal-overlay{position:fixed;top:0;left:0;width:100%;height:100%;background-color:#000000b3;display:flex;align-items:center;justify-content:center;z-index:1000}.modal-content{background-color:var(--card-dark);width:90%;max-width:520px;max-height:80vh;border-radius:8px;padding:1.5rem;display:flex;flex-direction:column;gap:1rem;border:1px solid var(--border-color)}.modal-content h2{margin-top:0;color:var(--accent-red)}.modal-list{flex-grow:1;overflow-y:auto}.modal-list-item{display:flex;justify-content:space-between;align-items:center;padding:.75rem;border-bottom:1px solid var(--border-color)}.modal-list-item:last-child{border-bottom:none}.modal-list-item button{padding:.4rem .8rem;border:none;border-radius:6px;cursor:pointer;font-weight:700;background-color:var(--accent-blue);color:#fff}.modal-list-item button:disabled{background-color:#059669;cursor:not-allowed}.error-message{color:#f87171;font-size:.9rem}