:root{--bg-app: #FAF9F5;--bg-sidebar: #F3F1EA;--bg-header-accent: #EFECE3;--bg-footer-accent: #ECE9DF;--bg-surface: #FFFFFF;--bg-surface-secondary: #EFECE4;--bg-hover: #E8E4DA;--bg-active: #E4DFD3;--text-primary: #1F1E1D;--text-secondary: #66645E;--text-muted: #96938B;--accent-primary: #D97757;--accent-hover: #C46445;--accent-subtle: #F8EFEA;--accent-border: #F0D5C9;--border-subtle: #E8E5DD;--border-default: #DCD8CD;--status-success: #3A7854;--status-success-bg: #EDF5F0;--status-warning: #BC7518;--status-warning-bg: #FCF6EC;--user-bubble-bg: #EBE7DC;--user-avatar-bg: #D3CDC0;--font-serif: "Newsreader", Georgia, serif;--font-sans: "Inter", -apple-system, BlinkMacSystemFont, sans-serif;--font-mono: "JetBrains Mono", monospace;--radius-sm: 6px;--radius-md: 10px;--radius-lg: 16px;--radius-xl: 22px;--radius-full: 9999px;--shadow-sm: 0px 1px 3px rgba(31, 30, 29, .04);--shadow-md: 0px 4px 16px rgba(31, 30, 29, .05), 0px 1px 2px rgba(31, 30, 29, .04);--shadow-lg: 0px 12px 32px rgba(31, 30, 29, .08);--shadow-drawer: -4px 0 24px rgba(31, 30, 29, .08)}[data-theme=dark]{--bg-app: #1E1D1B;--bg-sidebar: #171615;--bg-header-accent: #22211E;--bg-footer-accent: #201F1C;--bg-surface: #272624;--bg-surface-secondary: #32312E;--bg-hover: #383633;--bg-active: #42403B;--text-primary: #FAF8F5;--text-secondary: #A8A59E;--text-muted: #7E7B74;--accent-primary: #E08264;--accent-hover: #EA8F72;--accent-subtle: #3A261D;--accent-border: #5B3523;--border-subtle: #32302D;--border-default: #44423D;--status-success: #52A676;--status-success-bg: #1B3324;--status-warning: #E0A045;--status-warning-bg: #3B2D17;--user-bubble-bg: #353330;--user-avatar-bg: #403E3A;--shadow-sm: 0px 1px 3px rgba(0, 0, 0, .35);--shadow-md: 0px 4px 16px rgba(0, 0, 0, .4), 0px 1px 2px rgba(0, 0, 0, .3);--shadow-lg: 0px 12px 32px rgba(0, 0, 0, .6);--shadow-drawer: -4px 0 24px rgba(0, 0, 0, .5)}*{box-sizing:border-box;margin:0;padding:0;scrollbar-width:thin;scrollbar-color:var(--border-default) transparent}::-webkit-scrollbar{width:6px;height:6px}::-webkit-scrollbar-track{background:transparent}::-webkit-scrollbar-thumb{background:var(--border-default);border-radius:var(--radius-full)}::-webkit-scrollbar-thumb:hover{background:var(--text-muted)}body{font-family:var(--font-sans);background-color:var(--bg-app);color:var(--text-primary);height:100vh;height:100dvh;margin:0;display:flex;overflow:hidden;-webkit-font-smoothing:antialiased;transition:background-color .2s ease,color .2s ease}#root{display:flex;width:100%;height:100%}.app-container{display:flex;width:100%;height:100vh;height:100dvh;overflow:hidden}.sidebar{width:var(--sidebar-w, 320px);min-width:220px;max-width:520px;position:relative;background-color:var(--bg-sidebar);border-right:1px solid var(--border-subtle);display:flex;flex-direction:column;flex-shrink:0;-webkit-user-select:none;user-select:none;transition:background-color .2s ease,border-color .2s ease}.platform-header{padding:16px 18px 14px;border-bottom:1px solid var(--border-subtle);background:var(--bg-header-accent)}.platform-badge{display:inline-flex;align-items:center;gap:6px;font-size:11px;font-weight:600;text-transform:uppercase;letter-spacing:.6px;color:var(--accent-primary);margin-bottom:4px}.platform-brand{display:flex;align-items:center;justify-content:space-between}.brand-icon{width:28px;height:28px;background:var(--accent-primary);border-radius:var(--radius-sm);display:flex;align-items:center;justify-content:center;color:#fff;font-family:var(--font-serif);font-size:18px;font-weight:500}.brand-title{font-family:var(--font-serif);font-size:21px;font-weight:500;color:var(--text-primary)}.status-dot{width:8px;height:8px;border-radius:50%;background:var(--status-success);box-shadow:0 0 0 3px #3a785426}.quick-nav-strip{padding:8px 12px;display:flex;gap:6px;border-bottom:1px solid var(--border-subtle)}.strip-btn{flex:1;padding:6px 10px;border-radius:var(--radius-sm);background:var(--bg-surface);border:1px solid var(--border-subtle);font-size:12px;color:var(--text-secondary);font-weight:500;cursor:pointer;display:flex;align-items:center;justify-content:center;gap:6px;transition:all .12s ease}.strip-btn:hover{border-color:var(--border-default);color:var(--text-primary)}.strip-btn.active{background:var(--accent-subtle);border-color:var(--accent-border);color:var(--accent-primary);font-weight:600}.sidebar-tree{flex:1;overflow-y:auto;padding:12px 10px}.tree-section-header{font-size:11px;text-transform:uppercase;letter-spacing:.8px;color:var(--text-muted);padding:6px 8px 8px;font-weight:600;display:flex;align-items:center;justify-content:space-between}.integration-group{margin-bottom:12px}.integration-header{display:flex;align-items:center;justify-content:space-between;padding:8px 10px;border-radius:var(--radius-md);cursor:pointer;font-size:13px;font-weight:600;color:var(--text-primary);transition:background .12s ease}.integration-header:hover{background:var(--bg-hover)}.integration-title-wrap{display:flex;align-items:center;gap:8px}.integration-badge{font-size:10.5px;padding:2px 6px;border-radius:4px;background:var(--status-success-bg);color:var(--status-success);font-weight:500}.courses-list{margin-left:12px;padding-left:10px;border-left:1.5px solid var(--border-subtle);margin-top:4px}.course-item{margin-bottom:4px}.course-header{display:flex;align-items:center;justify-content:space-between;padding:6px 8px;border-radius:var(--radius-sm);font-size:13px;font-weight:500;color:var(--text-primary);cursor:pointer;transition:background .12s ease}.course-header:hover{background:var(--bg-hover)}.course-header.selected{color:var(--accent-primary);font-weight:600}.chats-list{margin-left:14px;padding-left:8px;border-left:1.5px dashed var(--border-default);margin-top:3px;margin-bottom:6px}.chat-link{display:flex;align-items:center;gap:7px;padding:6px 8px;border-radius:var(--radius-sm);font-size:12.5px;color:var(--text-secondary);cursor:pointer;transition:all .12s ease;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.chat-link:hover{background:var(--bg-hover);color:var(--text-primary)}.chat-link.active{background:var(--bg-surface);color:var(--accent-primary);font-weight:500;box-shadow:var(--shadow-sm);border:1px solid var(--accent-border)}.chat-link-new{color:var(--text-muted);font-style:italic;font-size:12px}.chat-link-new:hover{color:var(--accent-primary)}.sidebar-footer{padding:12px 16px;border-top:1px solid var(--border-subtle);display:flex;align-items:center;justify-content:space-between;background:var(--bg-footer-accent)}.user-profile-wrap{display:flex;align-items:center;gap:10px;overflow:hidden;cursor:pointer}.user-avatar{width:32px;height:32px;border-radius:50%;background:var(--user-avatar-bg);display:flex;align-items:center;justify-content:center;font-weight:600;font-size:12.5px;color:var(--text-primary);flex-shrink:0}.user-details{overflow:hidden}.user-name{font-size:13px;font-weight:600;white-space:nowrap;text-overflow:ellipsis;overflow:hidden}.user-meta{font-size:11px;color:var(--text-secondary)}.gear-btn{width:32px;height:32px;border-radius:var(--radius-sm);border:1px solid transparent;background:transparent;color:var(--text-secondary);display:flex;align-items:center;justify-content:center;cursor:pointer;transition:all .15s ease;flex-shrink:0}.gear-btn:hover{background:var(--bg-hover);color:var(--text-primary);border-color:var(--border-subtle)}.main-content{flex:1;min-width:0;display:flex;flex-direction:column;position:relative;background:var(--bg-app);overflow:hidden;transition:background-color .2s ease}.breadcrumb-bar{height:52px;padding:0 24px;display:flex;align-items:center;justify-content:space-between;border-bottom:1px solid var(--border-subtle);background:var(--bg-app);z-index:5}.breadcrumbs{display:flex;align-items:center;gap:8px;font-size:13px}.crumb-platform{color:var(--text-muted);font-weight:500}.crumb-divider{color:var(--text-muted);font-size:11px}.crumb-integration{color:var(--text-secondary);font-weight:500}.crumb-course{color:var(--text-primary);font-weight:600}.crumb-chat{color:var(--accent-primary);font-weight:500;background:var(--accent-subtle);padding:2px 8px;border-radius:var(--radius-sm)}.header-right{display:flex;align-items:center;gap:12px}.course-context-strip{background:var(--bg-surface);border-bottom:1px solid var(--border-subtle);padding:9px 24px;display:flex;align-items:center;justify-content:space-between;font-size:12px;color:var(--text-secondary);z-index:5}.context-pill{display:inline-flex;align-items:center;gap:6px;background:var(--bg-surface-secondary);padding:3px 9px;border-radius:var(--radius-full);font-weight:500;color:var(--text-primary)}.view-content{flex:1;display:flex;flex-direction:column;overflow-y:auto;position:relative}.chat-container{flex:1;min-height:0;overflow-y:auto;overflow-x:hidden;padding:24px 20px 170px;display:flex;flex-direction:column;align-items:center;scroll-behavior:smooth}.chat-inner{width:100%;max-width:800px;display:flex;flex-direction:column;gap:22px}.message{display:flex;gap:14px;width:100%}.message.user{justify-content:flex-end}.message.user .bubble{background:var(--user-bubble-bg);color:var(--text-primary);border-radius:18px 18px 4px;padding:12px 18px;max-width:82%;font-size:14.5px;line-height:1.5}.message.assistant{justify-content:flex-start}.assistant-avatar{width:30px;height:30px;border-radius:6px;background:var(--accent-primary);color:#fff;display:flex;align-items:center;justify-content:center;font-family:var(--font-serif);font-size:18px;flex-shrink:0;margin-top:2px}.message.assistant .bubble{background:transparent;color:var(--text-primary);max-width:calc(100% - 44px);font-size:15px;line-height:1.6}.code-card{background:#191816;border:1px solid var(--border-default);color:#f5f2eb;border-radius:var(--radius-md);padding:14px 16px;font-family:var(--font-mono);font-size:12.5px;line-height:1.55;margin:12px 0;overflow-x:auto}.action-badge-row{display:flex;gap:8px;margin-top:14px;flex-wrap:wrap}.action-chip{background:var(--bg-surface);border:1px solid var(--border-default);color:var(--text-primary);padding:6px 12px;border-radius:var(--radius-sm);font-size:12px;font-weight:500;cursor:pointer;display:inline-flex;align-items:center;gap:5px;transition:all .12s ease}.action-chip:hover{border-color:var(--accent-primary);color:var(--accent-primary);background:var(--accent-subtle)}.prompt-footer{position:absolute;bottom:0;left:0;right:0;background:linear-gradient(to top,var(--bg-app) 75%,rgba(0,0,0,0));padding:16px 24px 20px;display:flex;justify-content:center;z-index:10;pointer-events:none}.prompt-wrapper{width:100%;max-width:800px;pointer-events:auto}.prompt-box{background:var(--bg-surface);border:1px solid var(--border-default);border-radius:var(--radius-xl);box-shadow:var(--shadow-md);padding:14px 18px 12px;display:flex;flex-direction:column;gap:10px;transition:border-color .2s ease,box-shadow .2s ease}.prompt-box:focus-within{border-color:var(--accent-primary);box-shadow:var(--shadow-lg)}.prompt-textarea{width:100%;max-height:220px;overflow-y:auto;border:none;outline:none;font-family:var(--font-sans);font-size:14.5px;color:var(--text-primary);resize:none;min-height:50px;background:transparent;line-height:1.5}.prompt-textarea::placeholder{color:var(--text-muted)}.prompt-tools-bar{display:flex;align-items:center;justify-content:space-between;border-top:1px solid var(--border-subtle);padding-top:8px}.tools-left{display:flex;align-items:center;gap:6px}.tool-pill{background:var(--bg-surface-secondary);border:1px solid var(--border-subtle);color:var(--text-secondary);border-radius:var(--radius-sm);padding:4px 8px;font-size:11.5px;font-weight:500;display:flex;align-items:center;gap:5px;cursor:pointer}.tool-pill:hover{background:var(--bg-hover);color:var(--text-primary)}.btn-send-message{width:32px;height:32px;background:var(--accent-primary);color:#fff;border:none;border-radius:50%;display:flex;align-items:center;justify-content:center;cursor:pointer;transition:background .15s ease,transform .1s ease}.btn-send-message:hover{background:var(--accent-hover);transform:scale(1.05)}.page-container{max-width:960px;width:100%;margin:0 auto;padding:32px 24px 60px}.page-title{font-family:var(--font-serif);font-size:32px;font-weight:500;margin-bottom:6px;color:var(--text-primary)}.page-subtitle{font-size:14.5px;color:var(--text-secondary);margin-bottom:24px}.stats-grid{display:grid;grid-template-columns:repeat(4,1fr);gap:14px;margin-bottom:28px}.stat-card{background:var(--bg-surface);border:1px solid var(--border-subtle);border-radius:var(--radius-lg);padding:16px 18px;box-shadow:var(--shadow-sm)}.stat-number{font-family:var(--font-serif);font-size:28px;font-weight:500;color:var(--text-primary);line-height:1.2}.stat-label{font-size:12px;color:var(--text-muted);margin-top:4px;text-transform:uppercase;letter-spacing:.5px}.stat-number.urgent{color:var(--accent-primary)}.filter-bar{display:flex;align-items:center;justify-content:space-between;margin-bottom:18px}.filter-group{display:flex;gap:8px}.filter-chip{padding:6px 14px;border-radius:var(--radius-full);background:var(--bg-surface);border:1px solid var(--border-subtle);font-size:12.5px;color:var(--text-secondary);cursor:pointer;font-weight:500;transition:all .12s ease}.filter-chip:hover{border-color:var(--border-default);color:var(--text-primary)}.filter-chip.active{background:var(--accent-subtle);border-color:var(--accent-border);color:var(--accent-primary);font-weight:600}.deadline-card-list{display:flex;flex-direction:column;gap:10px}.deadline-card{background:var(--bg-surface);border:1px solid var(--border-subtle);border-radius:var(--radius-md);padding:16px 20px;display:flex;align-items:center;justify-content:space-between;box-shadow:var(--shadow-sm);transition:all .15s ease}.deadline-card:hover{border-color:var(--border-default);box-shadow:var(--shadow-md)}.deadline-card.urgent{border-left:4px solid var(--accent-primary)}.task-meta{display:flex;align-items:center;gap:8px;font-size:11.5px;color:var(--text-muted);text-transform:uppercase;letter-spacing:.5px;margin-bottom:4px}.task-title-text{font-size:15px;font-weight:600;color:var(--text-primary)}.deadline-time-badge{font-size:12px;font-weight:600;padding:4px 10px;border-radius:var(--radius-full)}.deadline-time-badge.urgent{background:var(--status-warning-bg);color:var(--status-warning)}.deadline-time-badge.normal{background:var(--bg-surface-secondary);color:var(--text-secondary)}.integrations-grid{display:grid;grid-template-columns:repeat(2,1fr);gap:16px;margin-top:20px}.integration-service-card{background:var(--bg-surface);border:1px solid var(--border-subtle);border-radius:var(--radius-lg);padding:24px;box-shadow:var(--shadow-sm);display:flex;flex-direction:column;justify-content:space-between}.service-card-header{display:flex;align-items:flex-start;justify-content:space-between;margin-bottom:12px}.service-icon-box{width:44px;height:44px;border-radius:var(--radius-md);background:var(--bg-surface-secondary);display:flex;align-items:center;justify-content:center;font-size:22px}.service-badge{font-size:11px;padding:3px 8px;border-radius:var(--radius-full);font-weight:600}.service-badge.connected{background:var(--status-success-bg);color:var(--status-success)}.service-badge.not-connected{background:var(--bg-surface-secondary);color:var(--text-muted)}.service-title{font-family:var(--font-serif);font-size:19px;font-weight:500;margin-bottom:4px;color:var(--text-primary)}.service-desc{font-size:13px;color:var(--text-secondary);line-height:1.5;margin-bottom:20px}.btn-connect{padding:9px 16px;border-radius:var(--radius-md);font-size:13px;font-weight:500;cursor:pointer;display:flex;align-items:center;justify-content:center;gap:6px;transition:all .15s ease}.btn-connect.primary{background:var(--accent-primary);color:#fff;border:none}.btn-connect.primary:hover{background:var(--accent-hover)}.btn-connect.secondary{background:var(--bg-surface);color:var(--text-primary);border:1px solid var(--border-default)}.btn-connect.secondary:hover{background:var(--bg-hover)}.course-sidebar{width:var(--drawer-w, 420px);min-width:280px;max-width:650px;background:var(--bg-surface);border-left:1px solid var(--border-subtle);display:flex;flex-direction:column;flex-shrink:0;height:100%;overflow:hidden;position:relative;z-index:6;transition:background-color .2s ease,border-color .2s ease}.resize-handle{position:absolute;top:0;bottom:0;width:8px;cursor:col-resize;z-index:25;-webkit-user-select:none;user-select:none}.resize-handle:after{content:"";position:absolute;top:0;bottom:0;width:2px;background:transparent;transition:background-color .15s ease}.resize-handle-right{right:-4px}.resize-handle-right:after{left:3px}.resize-handle-left{left:-4px}.resize-handle-left:after{right:3px}.resize-handle:hover:after,.resize-handle:active:after{background:var(--accent-primary)}.course-sidebar-header{padding:16px 20px 14px;border-bottom:1px solid var(--border-subtle);display:flex;align-items:flex-start;justify-content:space-between;gap:12px;background:var(--bg-header-accent)}.course-sidebar-title-wrap{flex:1;min-width:0}.course-sidebar-title{font-family:var(--font-serif);font-size:17px;font-weight:500;color:var(--text-primary);line-height:1.3;margin-bottom:3px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.course-sidebar-subtitle{font-size:11.5px;color:var(--text-muted);display:block}.course-sidebar-close-btn{width:28px;height:28px;border-radius:var(--radius-sm);border:1px solid var(--border-subtle);background:var(--bg-surface);color:var(--text-secondary);display:flex;align-items:center;justify-content:center;cursor:pointer;transition:all .15s ease;flex-shrink:0}.course-sidebar-close-btn:hover{background:var(--bg-hover);color:var(--text-primary);border-color:var(--border-default)}.course-sidebar-tabs{display:flex;border-bottom:1px solid var(--border-subtle);background:var(--bg-header-accent);padding:0 16px;gap:4px}.course-sidebar-tab{padding:10px 12px;font-size:12.5px;font-weight:500;color:var(--text-secondary);border-bottom:2px solid transparent;cursor:pointer;background:transparent;border-top:none;border-left:none;border-right:none;white-space:nowrap;transition:all .15s ease}.course-sidebar-tab:hover{color:var(--text-primary)}.course-sidebar-tab.active{color:var(--accent-primary);border-bottom-color:var(--accent-primary);font-weight:600}.course-sidebar-body{flex:1;overflow-y:auto;padding:18px 20px}.panel-toggle-btn{display:inline-flex;align-items:center;gap:6px;padding:5px 10px;border-radius:var(--radius-sm);border:1px solid var(--border-subtle);background:var(--bg-surface);color:var(--text-secondary);font-size:12px;font-weight:500;cursor:pointer;transition:all .15s ease}.panel-toggle-btn:hover{background:var(--bg-hover);color:var(--text-primary);border-color:var(--border-default)}.panel-toggle-btn.active{background:var(--accent-subtle);border-color:var(--accent-border);color:var(--accent-primary);font-weight:600}.action-chip.active{border-color:var(--accent-primary);color:var(--accent-primary);background:var(--accent-subtle);font-weight:600}.lecture-item{padding:12px 14px;border-radius:var(--radius-md);border:1px solid var(--border-subtle);margin-bottom:10px;background:var(--bg-surface);transition:border-color .12s ease}.lecture-item:hover{border-color:var(--border-default);background:var(--bg-surface-secondary)}.lecture-num{font-size:11px;font-weight:600;color:var(--accent-primary);margin-bottom:2px}.lecture-title{font-size:13.5px;font-weight:500;color:var(--text-primary)}.rso-criteria-table{width:100%;border-collapse:collapse;font-size:13px;margin-top:12px}.rso-criteria-table th,.rso-criteria-table td{padding:10px 12px;border-bottom:1px solid var(--border-subtle);text-align:left}.rso-criteria-table th{background:var(--bg-surface-secondary);font-weight:600;font-size:11.5px;text-transform:uppercase;letter-spacing:.5px}.settings-modal{position:fixed;top:0;right:0;bottom:0;left:0;background:#0000008c;-webkit-backdrop-filter:blur(3px);backdrop-filter:blur(3px);z-index:110;display:none;align-items:center;justify-content:center}.settings-modal.open{display:flex}.settings-card{width:620px;max-width:92vw;background:var(--bg-surface);border-radius:var(--radius-lg);box-shadow:var(--shadow-lg);border:1px solid var(--border-subtle);display:flex;flex-direction:column;overflow:hidden}.settings-header{padding:20px 24px;border-bottom:1px solid var(--border-subtle);display:flex;align-items:center;justify-content:space-between;background:var(--bg-header-accent)}.settings-nav{display:flex;background:var(--bg-surface-secondary);padding:4px;border-radius:var(--radius-md);margin:16px 24px 0;gap:4px}.settings-nav-btn{flex:1;padding:7px 12px;font-size:12.5px;border-radius:var(--radius-sm);border:none;background:transparent;color:var(--text-secondary);font-weight:500;cursor:pointer;transition:all .12s ease}.settings-nav-btn.active{background:var(--bg-surface);color:var(--text-primary);box-shadow:var(--shadow-sm);font-weight:600}.settings-content{padding:24px;max-height:480px;overflow-y:auto}.settings-form-group{margin-bottom:18px}.settings-label{display:block;font-size:12.5px;font-weight:600;color:var(--text-primary);margin-bottom:6px}.settings-input{width:100%;padding:9px 12px;border-radius:var(--radius-md);border:1px solid var(--border-default);font-size:14px;color:var(--text-primary);outline:none;background:var(--bg-surface);transition:border-color .12s ease}.settings-input:focus{border-color:var(--accent-primary)}.theme-selector-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:10px;margin-top:6px}.theme-option-card{padding:12px 14px;border-radius:var(--radius-md);border:1.5px solid var(--border-default);background:var(--bg-surface);cursor:pointer;display:flex;flex-direction:column;align-items:center;gap:6px;transition:all .15s ease;-webkit-user-select:none;user-select:none}.theme-option-card:hover{border-color:var(--accent-primary);background:var(--bg-surface-secondary)}.theme-option-card.active{border-color:var(--accent-primary);background:var(--accent-subtle);color:var(--accent-primary);font-weight:600;box-shadow:var(--shadow-sm)}.theme-option-icon{font-size:20px}.theme-option-title{font-size:13px;color:var(--text-primary)}.theme-option-card.active .theme-option-title{color:var(--accent-primary);font-weight:600}.theme-option-desc{font-size:10.5px;color:var(--text-muted);text-align:center}.settings-footer{padding:16px 24px;border-top:1px solid var(--border-subtle);background:var(--bg-header-accent);display:flex;justify-content:flex-end;gap:10px}.auth-page{flex:1;width:100%;min-height:100vh;min-height:100dvh;overflow-y:auto;display:flex;align-items:center;justify-content:center;background:var(--bg-app);padding:24px}.auth-card{width:460px;max-width:100%;background:var(--bg-surface);border:1px solid var(--border-subtle);border-radius:var(--radius-lg);box-shadow:var(--shadow-md);padding:28px 30px}.auth-brand{display:flex;align-items:center;gap:12px;margin-bottom:22px}.tool-call{margin:8px 0;padding:8px 10px;border-radius:var(--radius-md);border:1px solid var(--border-subtle);background:var(--bg-surface-secondary);font-size:12.5px;cursor:pointer}.tool-call[data-error="1"]{border-color:#d9534f}.tool-call-head{display:flex;gap:8px;align-items:center;overflow:hidden}.tool-call-name{font-family:var(--font-mono);font-weight:600;color:var(--text-primary);white-space:nowrap}.tool-call-summary{font-family:var(--font-mono);color:var(--text-muted);overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.tool-call-body{margin-top:8px;font-family:var(--font-mono);font-size:11.5px;color:var(--text-secondary);white-space:pre-wrap;word-break:break-word}.stream-cursor{display:inline-block;width:7px;height:14px;margin-left:2px;vertical-align:text-bottom;background:var(--accent-primary);animation:stream-blink .9s steps(2,start) infinite}.stream-progress{display:flex;align-items:center;gap:8px;color:var(--text-muted);font-size:13px}.stream-dots{width:8px;height:8px;border-radius:50%;background:var(--accent-primary);animation:stream-pulse 1s ease-in-out infinite}@keyframes stream-blink{to{visibility:hidden}}@keyframes stream-pulse{0%,to{opacity:.3;transform:scale(.8)}50%{opacity:1;transform:scale(1.1)}}.modal-overlay{position:fixed;top:0;right:0;bottom:0;left:0;background:#0000008c;-webkit-backdrop-filter:blur(3px);backdrop-filter:blur(3px);z-index:110;display:flex;align-items:center;justify-content:center;padding:24px}.modal-card{max-width:100%;max-height:calc(100dvh - 48px);overflow-y:auto;background:var(--bg-surface);border-radius:var(--radius-lg);box-shadow:var(--shadow-lg);border:1px solid var(--border-subtle);padding:22px 24px 24px;color:var(--text-primary)}.modal-header{display:flex;align-items:center;justify-content:space-between;margin-bottom:16px}.modal-title{font-family:var(--font-serif);font-size:20px;font-weight:500;color:var(--text-primary)}.modal-card .close-btn{background:transparent;border:1px solid var(--border-subtle);border-radius:var(--radius-sm);width:30px;height:30px;display:inline-flex;align-items:center;justify-content:center;color:var(--text-secondary);cursor:pointer}.modal-card .close-btn:hover{background:var(--bg-hover);color:var(--text-primary)}.modal-footer{display:flex;justify-content:flex-end;flex-wrap:wrap;gap:8px;margin-top:20px}.settings-title{font-family:var(--font-serif);font-size:20px;font-weight:500;color:var(--text-primary)}.mobile-only{display:none!important}.label-short{display:none}.context-info{display:flex;align-items:center;gap:10px;min-width:0}.context-desc{overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.context-actions{display:flex;gap:8px;flex-shrink:0}.context-pill-warn{background:var(--status-warning-bg);color:var(--status-warning)}.context-sync-warn{border-color:var(--status-warning);color:var(--status-warning);background:var(--status-warning-bg);font-weight:600}.context-sync-btn{max-width:220px;overflow:hidden;text-overflow:ellipsis}.context-pill,.context-actions .action-chip{white-space:nowrap;flex-shrink:0}@media (max-width: 1500px){.drawer-open .context-desc{display:none}}.breadcrumbs{min-width:0;overflow:hidden}.breadcrumbs>span{white-space:nowrap}.crumb-course,.crumb-chat{overflow:hidden;text-overflow:ellipsis;min-width:0}.chat-delete-btn{display:none;flex-shrink:0;width:20px;height:20px;border:none;border-radius:4px;background:transparent;color:var(--text-muted);align-items:center;justify-content:center;cursor:pointer}.chat-link:hover .chat-delete-btn,.chat-link.active .chat-delete-btn{display:inline-flex}.chat-delete-btn:hover{background:var(--bg-hover);color:#d9534f}.page-header{display:flex;align-items:flex-start;justify-content:space-between;gap:16px;margin-bottom:6px}.page-header-text{min-width:0}.deadline-card{gap:16px}.deadline-main{min-width:0}.deadline-side{display:flex;align-items:center;gap:12px;flex-shrink:0}.task-meta{flex-wrap:wrap}.table-scroll{width:100%;overflow-x:auto}.shell-backdrop{display:none}.tools-left{min-width:0;overflow:hidden}.tool-pill{white-space:nowrap;flex-shrink:0}.tool-pill.context-pill-truncate{flex-shrink:1;min-width:0}.tools-left>.tool-pill>span{overflow:hidden;text-overflow:ellipsis}.prompt-tools-bar{gap:8px}@media (max-width: 1100px){.course-sidebar{position:fixed;top:0;right:0;bottom:0;width:min(var(--drawer-w, 420px),100vw);max-width:100vw;min-width:0;z-index:60;box-shadow:var(--shadow-drawer);animation:slide-in-right .2s ease}.course-sidebar .resize-handle{display:none}.shell-backdrop-drawer{display:block;position:fixed;top:0;right:0;bottom:0;left:0;z-index:55;background:#00000073;animation:fade-in .2s ease}.stats-grid{grid-template-columns:repeat(2,1fr)}.context-desc{display:none}.tool-pill-stack{display:none!important}}@media (max-width: 768px){.mobile-only{display:inline-flex!important}.desktop-only{display:none!important}.label-long{display:none}.label-short{display:inline}.sidebar{position:fixed;top:0;left:0;bottom:0;width:min(86vw,340px);min-width:0;max-width:none;z-index:70;transform:translate(-100%);transition:transform .22s ease,visibility .22s;visibility:hidden;box-shadow:none}.nav-open .sidebar{transform:translate(0);visibility:visible;box-shadow:4px 0 24px #00000059}.sidebar .resize-handle{display:none}.shell-backdrop-nav{display:block;position:fixed;top:0;right:0;bottom:0;left:0;z-index:65;background:#00000080;animation:fade-in .2s ease}.platform-header{padding-top:calc(14px + env(safe-area-inset-top))}.sidebar-footer{padding-bottom:calc(12px + env(safe-area-inset-bottom))}.integration-header,.course-header,.chat-link{min-height:40px}.strip-btn{padding:9px 10px;font-size:13px}.chat-delete-btn{display:inline-flex;width:28px;height:28px}.course-sidebar{width:100vw}.course-sidebar-header{padding-top:calc(14px + env(safe-area-inset-top))}.course-sidebar-tabs{overflow-x:auto;padding:0 8px}.course-sidebar-body{padding:14px 16px calc(18px + env(safe-area-inset-bottom))}.breadcrumb-bar{height:52px;padding:0 8px 0 6px;padding-top:env(safe-area-inset-top);height:calc(52px + env(safe-area-inset-top));gap:6px}.nav-toggle-btn{width:40px;height:40px}.breadcrumbs{flex:1;gap:6px}.crumb-desktop{display:none}.crumb-course{max-width:45%;flex-shrink:1}.crumb-chat{flex-shrink:1}.header-right .gear-btn{width:40px;height:40px}.course-context-strip{padding:8px 12px;gap:8px}.context-pill{font-size:11.5px;white-space:nowrap}.context-actions .action-chip{padding:6px 10px}.context-actions{gap:6px}.context-sync-btn{max-width:150px}.context-pill-warn{display:none}.chat-container{padding:16px 12px}.chat-inner{gap:18px}.message{gap:10px}.message.user .bubble{max-width:88%;padding:10px 14px;font-size:15px}.assistant-avatar{width:26px;height:26px;font-size:15px}.message.assistant .bubble{max-width:calc(100% - 36px);min-width:0;font-size:15px;overflow-wrap:anywhere}.code-card{font-size:12px;padding:12px}.prompt-footer{position:relative;padding:6px 10px calc(10px + env(safe-area-inset-bottom));background:var(--bg-app);border-top:1px solid var(--border-subtle)}.prompt-box{border-radius:18px;padding:10px 12px 8px;gap:6px;box-shadow:none}.prompt-box:focus-within{box-shadow:none}.prompt-textarea{font-size:16px;min-height:24px;max-height:160px}.prompt-tools-bar{padding-top:6px}.btn-send-message{width:36px;height:36px}.page-container{padding:20px 16px calc(40px + env(safe-area-inset-bottom))}.page-title{font-size:25px;line-height:1.2}.page-subtitle{font-size:13.5px;margin-bottom:18px}.page-header{flex-direction:column;align-items:stretch;gap:14px}.page-header-action{width:100%}.page-header-action>*{flex:1}.stats-grid{gap:10px;margin-bottom:20px}.stat-card{padding:12px 14px}.stat-number{font-size:24px}.stat-label{font-size:10.5px}.filter-bar{flex-direction:column;align-items:stretch;gap:10px}.filter-group{overflow-x:auto;flex-wrap:nowrap;padding-bottom:2px;margin:0 -16px;padding-left:16px;padding-right:16px;scrollbar-width:none}.filter-group::-webkit-scrollbar{display:none}.filter-chip{white-space:nowrap;flex-shrink:0}.deadline-card{flex-direction:column;align-items:stretch;gap:10px;padding:14px 16px}.deadline-side{justify-content:space-between;flex-wrap:wrap}.integrations-grid{grid-template-columns:1fr;gap:12px}.integration-service-card{padding:18px 16px}.integration-service-card .btn-connect{flex:1 1 auto}.modal-overlay,.settings-modal.open{padding:0;align-items:flex-end}.modal-card{width:100%!important;max-height:calc(100dvh - 24px);border-radius:var(--radius-lg) var(--radius-lg) 0 0;border-bottom:none;padding:18px 16px calc(18px + env(safe-area-inset-bottom));animation:slide-up .22s ease}.modal-footer>*{flex:1 1 auto}.settings-card{width:100%;max-width:100%;height:calc(100dvh - 24px);border-radius:var(--radius-lg) var(--radius-lg) 0 0;border-bottom:none;animation:slide-up .22s ease}.settings-header{padding:14px 16px}.settings-title{font-size:18px}.settings-nav{margin:12px 16px 0;overflow-x:auto;flex-shrink:0;scrollbar-width:none}.settings-nav::-webkit-scrollbar{display:none}.settings-nav-btn{flex:0 0 auto;white-space:nowrap}.settings-content{flex:1;max-height:none;padding:16px}.settings-footer{padding:12px 16px calc(12px + env(safe-area-inset-bottom))}.theme-selector-grid{grid-template-columns:1fr}.theme-option-card{flex-direction:row;justify-content:flex-start;text-align:left;gap:12px}.theme-option-desc{text-align:left}.settings-input,.auth-card input,.auth-card select,.auth-card textarea,.modal-card input,.modal-card select,.modal-card textarea{font-size:16px!important}.form-row{flex-direction:column;gap:0!important}.form-row>*{flex:none!important;width:100%}.form-grid{grid-template-columns:1fr!important}.form-actions{flex-wrap:wrap}.form-actions>*{flex:1 1 auto}.btn-connect{white-space:nowrap}.filter-bar>.action-chip{justify-content:center;padding:9px 12px}.course-sidebar-tab{padding:10px 8px}.auth-page{padding:16px;align-items:flex-start;padding-top:max(10vh,24px)}.auth-card{padding:22px 18px}}@media (max-width: 380px){.context-pill{display:none}.context-actions{flex:1}.context-actions .action-chip{flex:1;justify-content:center}}@media (hover: none){.btn-send-message:hover{transform:none}}@keyframes fade-in{0%{opacity:0}to{opacity:1}}@keyframes slide-in-right{0%{transform:translate(24px);opacity:.6}to{transform:none;opacity:1}}@keyframes slide-up{0%{transform:translateY(24px);opacity:.6}to{transform:none;opacity:1}}@media (prefers-reduced-motion: reduce){*,*:before,*:after{animation:none!important;transition:none!important}}