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var(--transition-fast)}.unpin-attachment:hover{background:#ef4444;transform:scale(1.1)}.mention-picker{position:absolute;bottom:100%;left:52px;right:52px;background:var(--bg-secondary);border:1px solid var(--bg-tertiary);border-radius:12px;padding:8px;margin-bottom:8px;box-shadow:0 -4px 20px #0000004d;z-index:100;max-height:200px;overflow-y:auto;animation:slide-up .2s ease-out}@keyframes slide-up{0%{opacity:0;transform:translateY(10px)}to{opacity:1;transform:translateY(0)}}.mention-picker-header{font-size:.7rem;font-weight:600;color:var(--text-muted);padding:4px 8px;margin-bottom:4px}.mention-item{display:flex;align-items:center;gap:8px;width:100%;padding:8px 12px;background:transparent;border:none;border-radius:8px;color:var(--text-primary);cursor:pointer;transition:all var(--transition-fast);font-size:.85rem;text-align:left}.mention-item:hover{background:#3b82f626;color:var(--oracle-blue)}.mention-item svg{flex-shrink:0;color:var(--text-muted)}.mention-item:hover 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button{display:flex;align-items:center;justify-content:center;background:none;border:none;color:var(--oracle-blue);cursor:pointer;padding:0;opacity:.6;transition:opacity var(--transition-fast)}.mentioned-tag button:hover{opacity:1}.preview-thumbnail.file-chip{width:auto;min-width:64px;padding:0 12px;background:linear-gradient(135deg,#0a84ff26,#bf5af21a);border:1px solid rgba(10,132,255,.3)}.file-chip-content{display:flex;flex-direction:column;align-items:center;justify-content:center;height:100%;gap:4px;color:var(--oracle-blue)}.file-chip-label{font-size:10px;font-weight:500;color:var(--text-secondary)}.message-attachments{display:flex;flex-wrap:wrap;gap:8px;margin-bottom:12px}.message-file-chip{display:inline-flex;align-items:center;gap:6px;padding:8px 12px;background:linear-gradient(135deg,#0a84ff1f,#bf5af214);border:1px solid rgba(10,132,255,.25);border-radius:8px;font-size:13px;font-weight:500;color:var(--oracle-blue)}.message-file-chip 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h2{font-size:1.25rem;font-weight:600;color:var(--text-primary)}.modal-close{background:transparent;border:none;width:32px;height:32px;border-radius:var(--radius-md);display:flex;align-items:center;justify-content:center;color:var(--text-muted);cursor:pointer;transition:all var(--transition-fast)}.modal-close:hover{background:var(--bg-tertiary);color:var(--text-primary)}.form-group{margin-bottom:var(--space-4)}.form-group label{display:block;font-size:.875rem;font-weight:500;color:var(--text-secondary);margin-bottom:var(--space-2)}.form-group input{width:100%;padding:var(--space-3);background:var(--bg-primary);border:1px solid var(--bg-tertiary);border-radius:var(--radius-md);color:var(--text-primary);font-size:.9rem;transition:border-color var(--transition-fast)}.form-group 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var(--transition-fast)}.lightbox-close:hover{background:#fff3;transform:scale(1.1)}.lightbox-image{max-width:90vw;max-height:90vh;object-fit:contain;border-radius:var(--radius-lg);box-shadow:0 20px 60px #00000080;cursor:default}.message-meta{display:flex;align-items:center;gap:var(--space-3);margin-top:var(--space-2);padding-top:var(--space-2);padding-right:36px;font-size:.75rem;color:var(--text-muted);font-family:var(--font-mono);opacity:.7}.model-tag{margin-left:auto;background:#ffffff0d;padding:2px 6px;border-radius:4px;font-size:.7rem}.welcome-screen{flex:1;display:flex;flex-direction:column;align-items:center;justify-content:center;text-align:center;padding:var(--space-4);color:var(--text-primary);opacity:0;animation:fade-in .5s ease-out 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var(--bg-tertiary);background:var(--bg-secondary)}.core-badge.oracle{color:#38bdf8;border-color:#38bdf833}.core-badge.muse{color:#a855f7;border-color:#a855f733}.new-chat-btn{display:flex;align-items:center;gap:var(--space-2);padding:var(--space-3) var(--space-6);background:var(--text-primary);color:var(--bg-primary);border-radius:var(--radius-full);font-weight:500;cursor:pointer;transition:all .2s;border:none}.new-chat-btn:hover{transform:translateY(-2px);opacity:.9}.landing-link{margin-top:1.5rem;font-size:.875rem;color:var(--oracle-blue);text-decoration:none;opacity:.8;transition:opacity .2s,transform .2s}.landing-link:hover{opacity:1;transform:translate(4px)}@media(prefers-color-scheme:light){:root{--bg-primary: #FFFFFF;--bg-secondary: #F2F2F7;--bg-tertiary: #E5E5EA;--text-primary: #000000;--text-secondary: #3C3C43;--text-muted: #8E8E93;--border-color: rgba(0, 0, 0, .1);--input-bg: #FFFFFF;--shadow-sm: 0 1px 2px rgba(0, 0, 0, .05);--shadow-md: 0 4px 6px -1px rgba(0, 0, 0, .05)}.message.assistant .message-content{background:var(--bg-secondary)}.thinking-block{background:#f9fafb;border:1px solid #E5E7EB}}.message.assistant.active-streaming .message-content:after{content:"▋";display:inline-block;margin-left:2px;color:var(--color-oracle);animation:blink 1s step-end infinite}@keyframes blink{0%,to{opacity:1}50%{opacity:0}}@keyframes fade-in{0%{opacity:0;transform:translateY(10px)}to{opacity:1;transform:translateY(0)}}[data-theme=dark]{--bg-primary: #000000;--bg-secondary: #1C1C1E;--bg-tertiary: #2C2C2E;--text-primary: #F2F2F7;--text-secondary: #AEAEB2;--text-muted: #636366;--border-color: rgba(255, 255, 255, .1);--input-bg: #1C1C1E;--shadow-sm: 0 1px 2px rgba(0, 0, 0, .5);--shadow-md: 0 4px 6px -1px rgba(0, 0, 0, .3);--glass-bg: rgba(0, 0, 0, .25);--glass-border: 1px solid rgba(255, 255, 255, .1)}[data-theme=dark] .welcome-screen h1{color:#fff;-webkit-text-fill-color:#FFFFFF;text-shadow:0 2px 8px rgba(0,0,0,.5)}[data-theme=dark] .welcome-screen p{color:#fffc;text-shadow:0 1px 4px rgba(0,0,0,.5)}[data-theme=dark] .sidebar,[data-theme=dark] .sidebar.collapsed,[data-theme=dark] .sidebar.floating{background:#00000040;backdrop-filter:blur(20px);-webkit-backdrop-filter:blur(20px);border-right:1px solid rgba(255,255,255,.1);box-shadow:0 8px 32px #0003}[data-theme=dark] .conversation-item{color:var(--text-primary)}[data-theme=dark] .conversation-item:hover{background:#ffffff14}[data-theme=dark] .thinking-block{background:#1c1c1ecc;border:1px solid rgba(255,255,255,.1);border-left:2px solid var(--muse-purple)}[data-theme=dark] .chat-header{background:#00000040;backdrop-filter:blur(20px);-webkit-backdrop-filter:blur(20px);border-bottom:1px solid rgba(255,255,255,.1)}[data-theme=dark] .settings-btn,[data-theme=dark] .menu-btn{color:var(--text-primary)}[data-theme=dark] .settings-btn:hover,[data-theme=dark] .menu-btn:hover{background:#ffffff1a}[data-theme=light]{--bg-primary: #FFFFFF;--bg-secondary: #F2F2F7;--bg-tertiary: #E5E5EA;--text-primary: #000000;--text-secondary: #3C3C43;--text-muted: #8E8E93;--border-color: rgba(0, 0, 0, .1);--input-bg: #FFFFFF;--shadow-sm: 0 1px 2px rgba(0, 0, 0, .05);--shadow-md: 0 4px 6px -1px rgba(0, 0, 0, .05)}[data-theme=light] .sidebar,[data-theme=light] .sidebar.collapsed,[data-theme=light] .sidebar.floating{background:#f5f5f7;backdrop-filter:none;-webkit-backdrop-filter:none;border-right:1px solid rgba(0,0,0,.08);box-shadow:none}[data-theme=light] .chat-header{background:#fff3;backdrop-filter:blur(20px);-webkit-backdrop-filter:blur(20px);border-bottom:1px solid rgba(255,255,255,.4)}[data-theme=light] .input-field{background:var(--bg-primary);border-color:var(--bg-tertiary)}[data-theme=light] .message.user .message-content{background:#00000008;border:1px solid rgba(0,0,0,.06);box-shadow:0 1px 3px #00000014}[data-theme=light] .message.assistant .message-content{background:linear-gradient(135deg,#0a84ff0a,#bf5af208);border:1px solid rgba(10,132,255,.08);box-shadow:0 1px 4px #0a84ff0f}[data-theme=light] .thinking-block{background:#f9fafb;border:1px solid #E5E7EB;border-left:2px solid var(--muse-purple)}[data-theme=light] .thinking-header{color:#6b7280}[data-theme=light] .thinking-oracle{color:#2563eb}[data-theme=light] .thinking-muse{color:#9333ea}[data-theme=light] .thinking-switch{color:#9ca3af;border-top-color:#e5e7eb}[data-theme=light] .message-content code{background:#0000000d;color:#c026d3}[data-theme=light] .modal{background:#fff;border:1px solid rgba(0,0,0,.1);box-shadow:0 24px 80px #00000026}[data-theme=light] .modal input,[data-theme=light] .modal textarea{background:#f9fafb;border:1px solid #E5E7EB;color:#1c1c1e}[data-theme=light] .modal .btn-secondary{background:#f3f4f6!important;border:1px solid #D1D5DB!important;color:#374151!important}[data-theme=light] .modal button:not(.btn-primary):not(.modal-close){color:#374151}[data-theme=light] .modal button:not(.btn-primary):not(.modal-close):hover{background:#0000000d}[data-theme=light] .new-chat-btn{background:var(--text-primary);color:var(--bg-primary)}[data-theme=light] .sidebar.collapsed .new-chat-btn{background:var(--text-primary);color:var(--bg-primary);border-radius:var(--radius-md)}[data-theme=light] .sidebar.collapsed .conversation-item svg{color:var(--text-primary)}[data-theme=light] .sidebar.collapsed .collapse-btn{color:var(--text-primary)}[data-theme=light] .conversation-item:hover{background:var(--bg-tertiary)}[data-theme=light] .welcome-screen{background-image:url(/backgrounds/welcome-light.webp)}@media(max-width:768px){[data-theme=light] .welcome-screen{background-image:url(/backgrounds/welcome-dark.webp)}}.welcome-card{display:flex;flex-direction:column;align-items:center;justify-content:center;padding:3rem;border-radius:24px;backdrop-filter:blur(20px);-webkit-backdrop-filter:blur(20px);box-shadow:0 8px 32px #0003;max-width:480px;width:90%;transition:all var(--transition-normal)}[data-theme=dark] .welcome-card{background:#0003;border:1px solid rgba(255,255,255,.1)}[data-theme=light] .welcome-card{background:#ffffff26;border:1px solid rgba(255,255,255,.4);box-shadow:0 8px 32px #0000001a}.gradient-card-container{padding:48px!important}.share-modal-wrapper{padding:40px!important}@media(max-width:640px){.gradient-card-container{padding:32px!important}.share-modal-wrapper{padding:24px!important}.message-avatar{display:none}}.mobile-sidebar-fab{display:none}@media(max-width:768px){.mobile-sidebar-fab{display:flex;position:fixed;left:16px;bottom:90px;width:48px;height:48px;border-radius:50%;background:var(--bg-secondary);border:1px solid var(--border-color);box-shadow:0 4px 12px #0000004d;align-items:center;justify-content:center;cursor:pointer;z-index:40;transition:transform .2s,box-shadow .2s}.mobile-sidebar-fab:active{transform:scale(.95)}.sidebar{position:fixed;left:0;top:0;bottom:0;width:280px;max-width:85vw;transform:translate(-100%);transition:transform .3s ease;z-index:50;box-shadow:4px 0 20px #0000004d}.sidebar.open{transform:translate(0)}}.mobile-sidebar-backdrop{display:none}@media(max-width:768px){.mobile-sidebar-backdrop{display:block;position:fixed;top:0;left:0;right:0;bottom:0;background:#00000080;z-index:45}.pin-btn{display:none!important}}