:root{--sidebar-width:280px;--header-height:65px}.chat-container{display:flex;height:calc(100vh - var(--header-height));overflow:hidden;background-color:#0f172a;color:#cbd5e1}.chat-sidebar{width:var(--sidebar-width);background-color:#020617;border-right:1px solid #1e293b;display:flex;flex-direction:column;flex-shrink:0;transition:margin-left .3s ease}.chat-sidebar.collapsed{margin-left:calc(-1 * var(--sidebar-width))}.sidebar-header{padding:1rem;border-bottom:1px solid #1e293b}.new-chat-btn{display:flex;align-items:center;justify-content:space-between;width:100%;padding:.75rem 1rem;border-radius:.5rem;font-weight:600;color:#fff;background-color:#2563eb;border:none;cursor:pointer;transition:background-color .2s}.new-chat-btn:hover{background-color:#1d4ed8}.history-list{flex-grow:1;overflow-y:auto;padding:.5rem}.history-item{display:block;width:100%;padding:.75rem 1rem;margin-bottom:.25rem;border-radius:.5rem;cursor:pointer;white-space:nowrap;overflow:hidden;text-overflow:ellipsis;font-size:.875rem;text-align:left;color:#94a3b8;background:none;border:none;transition:background-color .2s}.history-item:hover{background-color:#1e293b}.history-item.active{background-color:#2563eb;font-weight:600;color:#fff}.chat-main{flex-grow:1;display:flex;flex-direction:column;overflow:hidden;position:relative}.chat-header{padding:.75rem 1rem;border-bottom:1px solid #1e293b;display:flex;align-items:center;justify-content:space-between;background-color:#0f172a;color:#f1f5f9;flex-shrink:0}.chat-header h3{font-weight:600;font-size:1.125rem}.sidebar-toggle{color:#94a3b8;background:none;border:none;cursor:pointer;padding:.5rem;border-radius:9999px;margin-right:.5rem}.sidebar-toggle:hover{background-color:#1e293b}.provider-switch{display:flex;gap:.25rem;background-color:#1e293b;padding:.25rem;border-radius:9999px}.provider-switch button{display:flex;align-items:center;gap:.375rem;border:none;padding:.375rem .75rem;font-size:.875rem;border-radius:9999px;background-color:transparent;cursor:pointer;color:#94a3b8}.provider-switch button.active{background-color:#020617;color:#f1f5f9;font-weight:500;box-shadow:0 1px 2px 0 rgba(0,0,0,.05)}.chat-messages{flex-grow:1;overflow-y:auto;padding:1.5rem}.messages-content{max-width:800px;margin:0 auto;width:100%}.welcome-view{display:flex;flex-direction:column;align-items:center;justify-content:center;height:100%;text-align:center}.welcome-view h2{font-size:1.875rem;font-weight:800;margin-bottom:.5rem;color:#f1f5f9}.welcome-view p{color:#64748b;margin-bottom:2rem}.explore-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:.75rem;width:100%;max-width:600px}.explore-btn{padding:1.25rem;border-radius:.75rem;background-color:#1e293b;border:1px solid #334155;text-align:left;font-size:1rem;font-weight:600;color:#cbd5e1;cursor:pointer;transition:all .2s}.explore-btn:hover{border-color:#475569;background-color:#334155}.message-wrapper{display:flex;margin-bottom:1.25rem;width:100%}.message-wrapper.user{justify-content:flex-end}.message-bubble{padding:.75rem 1.25rem;border-radius:1rem;max-width:90%}.message-bubble.assistant{background-color:#1e293b;border-bottom-left-radius:.25rem}.message-bubble.user{background-color:#2563eb;color:#fff;border-bottom-right-radius:.25rem;max-width:-moz-fit-content;max-width:fit-content;margin-left:auto}.chat-footer{padding:1rem 1.5rem 1.5rem;border-top:1px solid #1e293b;background:linear-gradient(180deg,rgba(15,23,42,0),#0f172a 70%);flex-shrink:0}.footer-content{max-width:800px;margin:0 auto}.follow-ups{display:flex;flex-wrap:wrap;justify-content:center;gap:.5rem;margin-bottom:1rem}.follow-up-btn{padding:.375rem .875rem;border-radius:9999px;border:1px solid #334155;background-color:#1e293b;color:#cbd5e1;font-size:.875rem;font-weight:500;cursor:pointer;transition:all .2s}.follow-up-btn:hover{background-color:#334155}.input-form{display:flex;gap:.75rem;background-color:#1e293b;border-radius:.75rem;padding:.5rem;border:1px solid #334155}.chat-input{flex-grow:1;padding:.625rem;border:none;background-color:transparent;font-size:1rem;color:#f1f5f9}.chat-input:focus{outline:none}.send-btn{padding:.75rem;border-radius:.5rem;background-color:#2563eb;color:#fff;border:none;cursor:pointer}.send-btn:disabled{background-color:#334155;cursor:not-allowed}.prose{color:#cbd5e1;max-width:100%}.prose.prose-invert{color:#fff}.prose h3{margin-top:1.5em;margin-bottom:.75em;font-size:1.2em;color:#f1f5f9}.prose ul{padding-left:1.5em}.prose a{color:#60a5fa;text-decoration:none;font-weight:500}.prose a:hover{text-decoration:underline}.prose.prose-invert a{color:#bfdbfe}.prose strong{color:#fff}