.chat-window{-ms-overflow-style:none;scrollbar-width:none;background-color:#111;border:1px solid #2c2c2c;border-radius:8px;flex-direction:column;max-width:1000px;height:80vh;margin:10px auto;font-family:sans-serif;display:flex;overflow:hidden}.button-container{justify-content:flex-end;margin-top:1rem;padding:10px;display:flex}.course-chat h2{text-align:left;background-color:#0078ff}.messages{flex-direction:column;flex:1;padding:12px;display:flex;overflow-y:auto}.user-who{background:linear-gradient(to right, var(--purple), var(--cyan));color:#0000;-webkit-background-clip:text;background-clip:text;font-weight:600}.user-msg{color:#fff;text-align:left;background:#2d2d2d;border-radius:12px;align-self:flex-end;max-width:70%;margin:6px 0;padding:10px 14px}.ai-msg{color:#dedede;text-align:left;background:#232322;border-radius:12px;align-self:flex-start;max-width:70%;margin:6px 0;padding:10px 14px}.input-area{background:#222;border-top:1px solid #2c2c2c;padding:10px;display:flex}.input-area input{color:#dedede;background-color:#2d2d2d;border:1px solid #2c2c2c;border-radius:6px;flex:1;padding:10px;font-size:16px;transition:border-color .2s,box-shadow .2s}.input-area input:focus{border-color:#00ffe7;outline:none;box-shadow:0 0 0 2px #0a84ff4d}.input-area-btn{color:#f5f5f5;text-shadow:0 0 4px #f0f,0 0 2px #00ffe7;background:linear-gradient(#000a14e6,#000a14e6),linear-gradient(135deg,#00f9ff33 0%,#ff00e633 100%);border:none;border-image:linear-gradient(135deg,#00f9ff 0%,#ff00e6 100%) 1;margin-left:10px;padding:10px 30px;font-family:Orbitron,Audiowide,sans-serif;font-size:16px;transition:transform .3s,box-shadow .3s;animation:3s infinite alternate status-pulse;position:relative;transform:scale(.95);box-shadow:0 0 5px #00f9ff4d,inset 0 0 5px #00f9ff33}.input-area-btn:hover{cursor:pointer;transform:scale(.9)}.course-chat{color:#dedede;max-width:900px;margin:0 auto;padding:1rem;font-family:Segoe UI,Tahoma,Geneva,Verdana,sans-serif}.course-description{color:#dedede;margin-bottom:2rem;font-size:1.1rem}.modules-container{flex-direction:column;gap:0;display:flex}.module-card{border-bottom:1px solid #333;gap:1.5rem;padding:1rem;transition:box-shadow .3s;display:flex}.module-card:hover{box-shadow:0 6px 15px #0000001a}.thumbnail-box{flex:0 0 33%;max-width:33%}.thumbnail-box img{object-fit:cover;border-radius:10px;width:100%;height:auto;transition:transform .3s;display:block;box-shadow:0 2px 6px #00000026}.thumbnail-box a:hover img{transform:scale(1.05)}.info-box{flex-direction:column;flex:1;justify-content:space-between;display:flex}.module-title{margin:0 0 .3rem;font-size:1.3rem}.video-duration{color:#dedede;margin:0 0 1rem;font-size:.9rem}.module-description{color:#dedede;margin-bottom:1rem;font-size:1rem;line-height:1.4}@media (max-width:768px){.chat-window{margin-left:1px;margin-right:1px}.module-card{flex-direction:column}.thumbnail-box,.info-box{flex:none;max-width:100%}.thumbnail-box{margin-bottom:1rem}.thumbnail-box img{width:100%;height:200px}.ai-msg,.user-msg{max-width:90%}}