:root{--uec-primary: #3c3886;--uec-primary-dark: #2e2a6d;--uec-primary-light: #524da8;--uec-primary-surface: #f4f5fd;--uec-primary-border: #dcdff7;--uec-gold: #c89b3c;--uec-gold-hover: #b48930;--uec-gold-light: #fef8ed;--uec-gold-border: #f7e3b8;--uec-navy: #1f2438;--uec-slate: #51596f;--uec-muted: #848ea4;--bg-body: #f7f8fc;--bg-surface: #ffffff;--bg-subtle: #f1f3f9;--bg-hover: #edf0f8;--accent-emerald: #059669;--accent-emerald-light: #ecfdf5;--accent-emerald-border: #a7f3d0;--accent-rose: #dc2626;--accent-rose-light: #fef2f2;--accent-amber: #d97706;--accent-amber-light: #fffbeb;--font-sans: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;--font-heading: "Plus Jakarta Sans", var(--font-sans);--shadow-xs: 0 1px 2px rgba(24, 24, 41, .04);--shadow-sm: 0 1px 3px rgba(24, 24, 41, .08), 0 1px 2px rgba(24, 24, 41, .04);--shadow-md: 0 4px 12px rgba(24, 24, 41, .08), 0 2px 4px rgba(24, 24, 41, .04);--shadow-lg: 0 12px 28px rgba(24, 24, 41, .12), 0 4px 10px rgba(24, 24, 41, .06);--border-light: #e5e8f2;--border-medium: #d6dae8;--radius-sm: 6px;--radius-md: 10px;--radius-lg: 14px;--radius-xl: 18px;--radius-full: 9999px}*{box-sizing:border-box;margin:0;padding:0}body{font-family:var(--font-sans);background-color:var(--bg-body);color:var(--uec-navy);line-height:1.6;min-height:100vh;overflow-x:hidden;-webkit-font-smoothing:antialiased}h1,h2,h3,h4,h5,h6{font-family:var(--font-heading);font-weight:700;color:var(--uec-navy);letter-spacing:-.015em}::-webkit-scrollbar{width:6px;height:6px}::-webkit-scrollbar-track{background:var(--bg-body)}::-webkit-scrollbar-thumb{background:#cbd2e1;border-radius:var(--radius-full)}::-webkit-scrollbar-thumb:hover{background:#9aa5be}.uec-card{background:var(--bg-surface);border:1px solid var(--border-light);border-radius:var(--radius-md);box-shadow:var(--shadow-sm);transition:all .2s ease}.uec-card:hover{border-color:var(--uec-primary-border);box-shadow:var(--shadow-md)}@keyframes mic-pulse-light{0%{box-shadow:0 0 #dc262699;transform:scale(1)}50%{box-shadow:0 0 0 12px #dc262600;transform:scale(1.04)}to{box-shadow:0 0 #dc262600;transform:scale(1)}}.recording-pulse{animation:mic-pulse-light 1.6s infinite ease-in-out;background-color:var(--accent-rose)!important;color:#fff!important}.markdown-body{font-size:.94rem;line-height:1.7;color:#242938}.markdown-body h3{font-size:1.18rem;margin:1.1rem 0 .5rem;color:var(--uec-primary);border-bottom:2px solid var(--uec-primary-surface);padding-bottom:.3rem;font-weight:700}.markdown-body h4{font-size:1.02rem;margin:.85rem 0 .35rem;color:var(--uec-primary-dark);font-weight:600}.markdown-body p{margin-bottom:.75rem}.markdown-body ul,.markdown-body ol{margin:.5rem 0 .85rem 1.4rem}.markdown-body li{margin-bottom:.35rem}.markdown-body strong{color:var(--uec-primary-dark);font-weight:600}.markdown-body table{width:100%;border-collapse:collapse;margin:1rem 0;font-size:.88rem;background:var(--bg-surface);border-radius:var(--radius-sm);overflow:hidden;border:1px solid var(--border-light);box-shadow:var(--shadow-xs)}.markdown-body th,.markdown-body td{border:1px solid var(--border-light);padding:10px 14px;text-align:left}.markdown-body th{background:var(--uec-primary-surface);color:var(--uec-primary);font-weight:700}.markdown-body tr:nth-child(2n){background:#fbfbfe}.markdown-body blockquote{border-left:4px solid var(--uec-gold);padding:10px 16px;margin:.9rem 0;background:var(--uec-gold-light);border-radius:0 var(--radius-sm) var(--radius-sm) 0;color:#785412;font-size:.9rem}@keyframes spin{0%{transform:rotate(0)}to{transform:rotate(360deg)}}.spin{animation:spin 1s linear infinite}@keyframes fadeIn{0%{opacity:0}to{opacity:1}}.app-container{display:flex;flex-direction:column;height:100vh;height:100dvh;overflow:hidden;width:100%;position:relative}.uec-sidebar{width:270px;background:#fff;border-right:1px solid var(--border-light);display:flex;flex-direction:column;height:100%;flex-shrink:0;transition:transform .28s cubic-bezier(.4,0,.2,1);z-index:100}.uec-sidebar-backdrop,.mobile-sidebar-close,.mobile-menu-btn{display:none}.study-tools-container{display:flex;align-items:center;gap:8px;padding:8px 24px;background:#fff;border-bottom:1px solid var(--border-light);overflow-x:auto;-webkit-overflow-scrolling:touch;scrollbar-width:none;flex-shrink:0}.study-tools-container::-webkit-scrollbar{display:none}.citations-grid{display:grid;grid-template-columns:repeat(auto-fill,minmax(280px,1fr));gap:8px}.welcome-card{margin:auto;text-align:center;max-width:620px;width:100%;padding:32px 28px;background:#fff;border-radius:16px;border:1.5px solid var(--border-light);box-shadow:var(--shadow-md)}.welcome-banner-img{position:relative;border-radius:14px;overflow:hidden;margin-bottom:20px;height:190px;box-shadow:0 4px 16px #0000001a}.chat-input-bar{padding:12px 28px 16px;background:#fff;border-top:1px solid var(--border-light);display:flex;flex-direction:column;gap:10px;box-shadow:0 -2px 10px #00000005;flex-shrink:0}.chat-messages-container{flex:1;overflow-y:auto;padding:24px 32px;display:flex;flex-direction:column;gap:20px;-webkit-overflow-scrolling:touch}@media (max-width: 1023px){.mobile-menu-btn{display:inline-flex;align-items:center;justify-content:center;width:36px;height:36px;background:#f4f5fd;border:1px solid #dcdff7;border-radius:8px;color:#3c3886;cursor:pointer;flex-shrink:0;transition:background .15s ease}.mobile-menu-btn:hover{background:#e8eafb}.uec-sidebar{position:fixed;top:0;bottom:0;left:0;width:285px;max-width:85vw;box-shadow:var(--shadow-lg);transform:translate(-100%)}.uec-sidebar.open{transform:translate(0)}.uec-sidebar-backdrop{display:block;position:fixed;top:0;right:0;bottom:0;left:0;background:#0f172a73;-webkit-backdrop-filter:blur(4px);backdrop-filter:blur(4px);z-index:99;animation:fadeIn .2s ease}.mobile-sidebar-close{display:flex;align-items:center;justify-content:center;width:32px;height:32px;background:#f8fafc;border:1px solid #e2e8f0;border-radius:8px;color:#64748b;cursor:pointer;transition:all .15s}.mobile-sidebar-close:hover{background:#fee2e2;color:#dc2626;border-color:#fca5a5}.chat-messages-container{padding:16px 20px}.chat-input-bar{padding:10px 18px 14px}}@media (max-width: 767px){.uec-top-ribbon-secondary,.header-subtitle,.header-badge-lms,.chat-grounded-text{display:none!important}.study-tools-container{padding:7px 12px;gap:6px}.chat-messages-container{padding:12px 14px;gap:14px}.chat-bubble-user{max-width:88%!important}.chat-bubble-assistant{max-width:95%!important}.citations-grid{grid-template-columns:1fr}.welcome-card{padding:20px 16px}.welcome-banner-img{height:155px}.chat-input-bar{padding:8px 12px 12px}.chat-input-field{font-size:16px!important}.curriculum-modal-content{width:96vw!important;max-height:94vh!important;border-radius:12px!important}.curriculum-upload-grid{grid-template-columns:1fr!important}}@media (max-width: 479px){.header-course-label,.header-curriculum-text,.student-pill-text{display:none!important}.header-logo-img{height:34px!important}.header-title-text{font-size:.94rem!important}.voice-assistant-toolbar{flex-wrap:wrap;gap:6px!important}.voice-status-text{display:none!important}.welcome-banner-img{height:140px}}