:root{--outer-bg: #1a1816;--paper-bg: #f3ead4;--text-main: #2b271f;--text-muted: #8a7f68;--text-muted-light: #a89a82;--dark-green: #22302a;--dark-card-bg: #221f1a;--accent-red: #c23b22;--accent-gold: #b8923f;--accent-green: #3b5a4a;--font-serif: "Lora", Georgia, "Songti SC", serif;--border-width: .5px;--radius-card: 8px;--radius-btn: 8px;--radius-pill: 14px;--transition-fast: .2s ease;--transition-normal: .25s ease}*{box-sizing:border-box;margin:0;padding:0}body,html{height:100%;width:100%;font-family:var(--font-serif);font-size:14px;color:var(--text-main);background-color:var(--outer-bg);overflow:hidden}.app-container{display:flex;height:100vh;width:100vw;overflow:hidden}.sidebar{width:260px;background-color:var(--outer-bg);border-right:var(--border-width) solid var(--dark-green);display:flex;flex-direction:column;color:var(--paper-bg);padding:16px;z-index:10;flex-shrink:0;transition:transform var(--transition-fast)}.sidebar-header{display:flex;flex-direction:column;gap:16px;margin-bottom:24px}.sidebar-logo{font-size:20px;font-weight:700;display:flex;align-items:center;gap:8px;letter-spacing:.5px;color:var(--accent-gold)}.sidebar-logo i{font-size:22px}.history-container{flex:1;overflow-y:auto;margin-bottom:16px}.section-label{font-size:11px;letter-spacing:1.5px;text-transform:uppercase;color:var(--text-muted-light);margin-bottom:10px;padding-left:8px}.history-list{list-style:none;display:flex;flex-direction:column;gap:6px}.history-item{padding:10px 12px;border-radius:var(--radius-btn);border:var(--border-width) solid transparent;cursor:pointer;display:flex;align-items:center;justify-content:space-between;gap:8px;color:var(--text-muted-light);transition:all var(--transition-fast)}.history-item:hover{background-color:var(--dark-card-bg);color:var(--paper-bg);transform:translateY(-2px)}.history-item.active{background-color:var(--dark-green);color:var(--paper-bg);border-color:var(--accent-gold)}.history-title{white-space:nowrap;overflow:hidden;text-overflow:ellipsis;flex:1;font-size:13px}.history-item-actions{display:flex;gap:4px;opacity:0;transition:opacity var(--transition-fast)}.history-item:hover .history-item-actions{opacity:1}.btn-history-action{background:none;border:none;color:var(--text-muted-light);cursor:pointer;font-size:13px;padding:2px}.btn-history-action:hover{color:var(--accent-red)}.sidebar-footer{border-top:var(--border-width) solid var(--dark-green);padding-top:14px;display:flex;align-items:center;justify-content:space-between;gap:12px}.user-info{display:flex;align-items:center;gap:8px}.user-avatar{width:28px;height:28px;border-radius:var(--radius-pill);border:var(--border-width) solid var(--text-muted-light);display:flex;align-items:center;justify-content:center;font-size:14px;background-color:var(--dark-card-bg);color:var(--text-muted-light)}.user-name{font-size:13px;font-weight:500;color:var(--text-muted-light);white-space:nowrap;overflow:hidden;text-overflow:ellipsis;max-width:110px}.main-chat{flex:1;background-color:var(--paper-bg);display:flex;flex-direction:column;height:100vh;position:relative}.chat-header{height:56px;border-bottom:var(--border-width) solid var(--text-muted-light);padding:0 20px;display:flex;align-items:center;justify-content:space-between;background-color:var(--paper-bg);z-index:5}.header-left{display:flex;align-items:center;gap:12px}.chat-title{font-size:15px;font-weight:600;color:var(--text-main)}.model-badge{display:flex;align-items:center;border:var(--border-width) solid var(--accent-gold);border-radius:var(--radius-pill);padding:4px 12px;background-color:transparent;font-size:12px;font-weight:600;color:var(--text-main)}.badge-icon{margin-right:6px;font-size:14px;color:var(--accent-gold)}.chat-body{flex:1;overflow-y:auto;padding:24px 20px;display:flex;flex-direction:column;gap:24px}.welcome-screen{flex:1;display:flex;align-items:center;justify-content:center;min-height:80%}.welcome-center{max-width:680px;width:100%;text-align:center;padding:0 20px}.welcome-title{font-size:24px;font-weight:700;color:var(--text-main);margin-bottom:12px;letter-spacing:.5px}.welcome-subtitle{font-size:14px;color:var(--text-muted);margin-bottom:30px}.feature-cards{display:grid;grid-template-columns:repeat(auto-fit,minmax(200px,1fr));gap:16px;text-align:left}.feature-card{background-color:transparent;border:var(--border-width) solid var(--text-muted-light);border-radius:var(--radius-card);padding:16px;cursor:pointer;transition:all var(--transition-fast)}.feature-card:hover{transform:translateY(-2px);border-color:var(--accent-red);background-color:#c23b2208}.card-icon{font-size:18px;color:var(--accent-gold);margin-bottom:10px}.card-title{font-size:13px;font-weight:700;text-transform:uppercase;letter-spacing:1px;color:var(--text-main);margin-bottom:6px}.card-desc{font-size:11px;color:var(--text-muted);line-height:1.4}.message-list{max-width:760px;width:100%;margin:0 auto;display:flex;flex-direction:column;gap:20px}.message-row{display:flex;width:100%}.message-row.user{justify-content:flex-end}.message-row.assistant{justify-content:flex-start}.message-bubble{max-width:85%;padding:14px 18px;border-radius:var(--radius-card);line-height:1.6;font-size:14px;word-wrap:break-word}.user .message-bubble{background-color:var(--dark-green);color:var(--paper-bg);border:var(--border-width) solid var(--dark-green)}.assistant .message-bubble{background-color:transparent;color:var(--text-main);border:var(--border-width) solid var(--text-muted-light);padding-left:0;border:none;max-width:100%}.message-bubble p{margin-bottom:12px}.message-bubble p:last-child{margin-bottom:0}.message-bubble h1,.message-bubble h2,.message-bubble h3,.message-bubble h4{margin-top:18px;margin-bottom:8px;color:var(--text-main)}.user .message-bubble h1,.user .message-bubble h2,.user .message-bubble h3,.user .message-bubble h4{color:var(--paper-bg)}.message-bubble h1{font-size:18px}.message-bubble h2{font-size:16px}.message-bubble h3{font-size:14px}.message-bubble ul,.message-bubble ol{margin-left:20px;margin-bottom:12px}.message-bubble li{margin-bottom:4px}.message-bubble pre{margin:14px 0;padding:12px;background-color:var(--dark-card-bg);border:var(--border-width) solid var(--text-muted-light);border-radius:var(--radius-card);overflow-x:auto}.message-bubble code{font-family:Courier,monospace;font-size:12px;background-color:#8a7f6826;padding:2px 4px;border-radius:3px}.user .message-bubble code{background-color:#f3ead426;color:var(--paper-bg)}.message-bubble pre code{background-color:transparent;padding:0;border-radius:0;color:var(--paper-bg);display:block}.assistant .message-bubble p:last-child:after{content:" ";display:inline-block;width:6px;height:14px;background-color:var(--accent-red);margin-left:4px;vertical-align:middle;animation:blink .8s infinite}.generation-completed .message-bubble p:last-child:after{display:none!important}@keyframes blink{0%,to{opacity:1}50%{opacity:0}}.stream-indicator{max-width:760px;width:100%;margin:0 auto}.indicator-inner{display:inline-flex;align-items:center;gap:6px;padding:10px 14px;background-color:transparent;border:var(--border-width) solid var(--text-muted-light);border-radius:var(--radius-pill)}.indicator-dot{width:5px;height:5px;background-color:var(--accent-red);border-radius:50%;animation:dot-pulse 1.4s infinite ease-in-out both}.indicator-dot:nth-child(2){animation-delay:.2s}.indicator-dot:nth-child(3){animation-delay:.4s}.indicator-text{font-size:11px;letter-spacing:1px;text-transform:uppercase;color:var(--text-muted);margin-left:4px}@keyframes dot-pulse{0%,80%,to{transform:scale(.6);opacity:.4}40%{transform:scale(1.1);opacity:1}}.chat-footer{padding:16px 20px 24px;background-color:var(--paper-bg);border-top:var(--border-width) solid transparent}.input-container{max-width:760px;width:100%;margin:0 auto;border:var(--border-width) solid var(--text-muted);border-radius:var(--radius-card);padding:10px 14px;background-color:transparent;display:flex;flex-direction:column;gap:8px;transition:border-color var(--transition-fast)}.input-container:focus-within{border-color:var(--accent-red)}#chat-input{width:100%;border:none;background:none;resize:none;outline:none;font-family:var(--font-serif);font-size:14px;color:var(--text-main);line-height:1.5;min-height:36px;max-height:180px}.input-actions{display:flex;align-items:center;justify-content:space-between;border-top:var(--border-width) dashed rgba(138,127,104,.2);padding-top:8px}.char-count{font-size:11px;color:var(--text-muted)}.footer-note{max-width:760px;width:100%;margin:8px auto 0;text-align:center;font-size:10px;color:var(--text-muted-light)}.btn{font-family:var(--font-serif);border:var(--border-width) solid transparent;cursor:pointer;display:inline-flex;align-items:center;justify-content:center;transition:all var(--transition-fast)}.btn:disabled{opacity:.4;cursor:not-allowed}.btn-primary{background-color:var(--dark-green);color:var(--paper-bg);border-color:var(--dark-green);padding:10px 16px;border-radius:var(--radius-btn);font-size:13px;font-weight:600;width:100%}.btn-primary:hover:not(:disabled){transform:translateY(-2px);opacity:.9}.btn-secondary{background-color:transparent;color:var(--text-muted-light);border-color:var(--text-muted-light);padding:8px 14px;border-radius:var(--radius-btn);font-size:12px}.btn-secondary:hover:not(:disabled){color:var(--paper-bg);border-color:var(--paper-bg);transform:translateY(-2px)}.btn-accent{background-color:var(--accent-red);color:var(--paper-bg);padding:8px 14px;border-radius:var(--radius-btn);font-size:13px;font-weight:600}.btn-accent:hover:not(:disabled){transform:translateY(-2px);opacity:.9}.btn-ghost{background:none;border:none;color:var(--text-main);font-size:18px;padding:4px}.btn-ghost:hover{opacity:.7}.btn-icon{gap:8px}.btn-icon-only{width:32px;height:32px;padding:0;border-radius:var(--radius-btn)}.modal-overlay{position:fixed;top:0;left:0;right:0;bottom:0;background-color:#1a1816b3;display:flex;align-items:center;justify-content:center;z-index:100;transition:opacity var(--transition-fast)}.modal{background-color:var(--paper-bg);border:var(--border-width) solid var(--text-muted);border-radius:var(--radius-card);width:100%;max-width:460px;display:flex;flex-direction:column}.modal-header{padding:16px 20px;border-bottom:var(--border-width) solid var(--text-muted-light);display:flex;align-items:center;justify-content:space-between}.modal-header h3{font-size:15px;font-weight:700;display:flex;align-items:center;gap:8px;color:var(--text-main)}.btn-close{background:none;border:none;font-size:18px;cursor:pointer;color:var(--text-muted);transition:color var(--transition-fast)}.btn-close:hover{color:var(--accent-red)}.modal-body{padding:20px;display:flex;flex-direction:column;gap:16px}.form-group{display:flex;flex-direction:column;gap:6px}.form-group label{font-size:12px;font-weight:700;color:var(--text-main)}.form-group input{padding:10px;border:var(--border-width) solid var(--text-muted);background-color:transparent;border-radius:var(--radius-btn);font-family:var(--font-serif);font-size:13px;color:var(--text-main);outline:none}.form-group input:focus{border-color:var(--accent-red)}.form-help{font-size:11px;color:var(--text-muted);line-height:1.4}.test-status{margin-left:10px;font-size:12px;font-weight:500}.test-status.success{color:var(--accent-green)}.test-status.error{color:var(--accent-red)}.modal-footer{padding:14px 20px;border-top:var(--border-width) solid var(--text-muted-light);display:flex;justify-content:flex-end}.hidden{display:none!important}@media (max-width: 768px){.sidebar{position:absolute;left:0;top:0;bottom:0;transform:translate(-100%)}.sidebar.active{transform:translate(0)}.hide-on-desktop{display:inline-flex!important}}@media (min-width: 769px){.hide-on-desktop{display:none!important}}::-webkit-scrollbar{width:6px;height:6px}::-webkit-scrollbar-track{background-color:transparent}::-webkit-scrollbar-thumb{background-color:var(--text-muted-light);border-radius:3px}::-webkit-scrollbar-thumb:hover{background-color:var(--text-muted)}.login-overlay{position:fixed;top:0;left:0;right:0;bottom:0;background-color:var(--outer-bg);display:flex;align-items:center;justify-content:center;z-index:1000}.login-box{background-color:var(--paper-bg);border:var(--border-width) solid var(--text-muted);border-radius:var(--radius-card);padding:36px 30px;width:100%;max-width:380px;display:flex;flex-direction:column;gap:24px}.login-header{text-align:center}.login-logo-icon{font-size:32px;color:var(--accent-gold);margin-bottom:12px}.login-header h2{font-size:22px;font-weight:700;color:var(--text-main);margin-bottom:6px;letter-spacing:.5px}.login-subtitle{font-size:12px;color:var(--text-muted)}.login-form{display:flex;flex-direction:column;gap:16px}.login-form .form-group input{padding:12px;border:var(--border-width) solid var(--text-muted);background-color:transparent;border-radius:var(--radius-btn);font-family:var(--font-serif);font-size:13px;color:var(--text-main);outline:none;width:100%}.login-form .form-group input:focus{border-color:var(--accent-red)}.login-error{color:var(--accent-red);font-size:12px;font-weight:600;text-align:center;border:var(--border-width) solid var(--accent-red);background-color:#c23b220d;padding:8px;border-radius:var(--radius-btn)}.btn-login{width:100%;padding:12px;font-weight:700}.settings-info-item{display:flex;justify-content:space-between;align-items:center;padding:12px 0;border-bottom:var(--border-width) dashed rgba(138,127,104,.3)}.settings-info-item:last-of-type{border-bottom:none}.settings-info-item .info-label{font-size:13px;color:var(--text-muted)}.settings-info-item .info-val{font-size:13px;font-weight:600;color:var(--text-main)}.settings-info-item .info-val.secure{color:var(--accent-green);display:flex;align-items:center;gap:4px}.btn-logout{width:100%;padding:10px;border-radius:var(--radius-btn);font-weight:600}