/* Activity conversation: shared messenger layout, with brighter student surfaces. */
.hsm-messenger,.hsm-messenger *{box-sizing:border-box}
.hsm-messenger .screen-reader-text{position:absolute!important;width:1px!important;height:1px!important;padding:0!important;margin:-1px!important;overflow:hidden!important;clip:rect(0,0,0,0)!important;clip-path:inset(50%)!important;white-space:nowrap!important;border:0!important}
.hsm-messenger-heading .hsm-learning-button{display:flex;align-items:center;justify-content:center;padding:8px 12px;border:1px solid #dad2ec;border-radius:14px;background:#fff;color:#644696;cursor:pointer}.hsm-messenger-attach>span[aria-hidden]{font-size:26px;line-height:1}
.hsm-messenger [data-conversation-compose]{display:block!important}.hsm-messenger .hsm-messenger-attach{flex:0 0 44px!important;min-width:44px!important;width:44px!important;height:44px!important}.hsm-messenger-compose-actions>small{min-width:0}
.hsm-messenger.hsm-learning-conversation{min-width:0;display:grid;gap:12px;--chat-ink:#24334d;--chat-accent:#7750d4}
.hsm-messenger-heading{display:flex;justify-content:space-between;align-items:center;gap:10px}.hsm-messenger-heading h4{margin:0;font-size:17px}.hsm-messenger-heading small{color:#6b7285;font-size:12px}.hsm-messenger-heading .hsm-learning-button{min-height:44px;font-size:13px;white-space:nowrap}
.hsm-messenger .hsm-learning-conversation-scroll{display:flex;flex-direction:column;gap:18px;max-height:500px;min-height:190px;padding:18px 12px;background:linear-gradient(135deg,#eff1fc,#f7f8fc);border:1px solid #e2e6ee;border-radius:24px;overflow:auto;overscroll-behavior-y:auto;scrollbar-width:thin;overflow-wrap:anywhere}
.hsm-messenger.hsm-learning-conversation .hsm-learning-chat-message,.hsm-app .hsm-messenger.hsm-learning-conversation .hsm-learning-chat-message{display:flex;flex-direction:row-reverse;align-self:flex-end;align-items:flex-end;gap:8px;width:94%;max-width:670px;min-width:0;margin:0;padding:0;background:none;border:0;border-radius:0;box-shadow:none;color:var(--chat-ink)}
.hsm-messenger.hsm-learning-conversation .hsm-learning-chat-message.is-mine,.hsm-app .hsm-messenger.hsm-learning-conversation .hsm-learning-chat-message.is-mine{align-self:flex-start;flex-direction:row}
.hsm-messenger-avatar{flex:0 0 34px;display:grid;place-items:center;width:34px;height:34px;border:2px solid #fff;border-radius:13px;background:linear-gradient(145deg,#8a6ad9,#b88be5);color:#fff;font-size:15px;font-weight:800;box-shadow:0 3px 8px #50378315}.is-teacher>.hsm-messenger-avatar{background:linear-gradient(145deg,#238e9f,#67bfb5)}
.hsm-messenger-bubble{flex:1;min-width:0;padding:12px 14px;border:1px solid #e0e5f1;border-radius:20px 20px 20px 5px;background:#fff;box-shadow:0 4px 10px #45527309;overflow-wrap:anywhere}.is-mine>.hsm-messenger-bubble{background:linear-gradient(130deg,#ede5ff,#f5efff);border-color:#ddcff3;border-radius:20px 20px 5px 20px}
.hsm-messenger-bubble>header{display:flex;justify-content:space-between;align-items:baseline;gap:6px 12px;flex-wrap:wrap;font-size:13px}.hsm-messenger-bubble>header>span{font-size:11px;color:#6c7487}.hsm-messenger-bubble>p{white-space:pre-wrap;font-size:14px;line-height:1.95;margin:8px 0}.hsm-messenger-bubble>footer{display:flex;justify-content:space-between;align-items:center;gap:10px;margin-top:8px}.hsm-messenger-bubble time{font-size:11px;color:#68758a}.hsm-messenger-bubble button{min-height:44px;padding:6px 9px;background:#ffffffb8;border:1px solid #d9def1;border-radius:12px;font:inherit;font-size:12px;color:#5c4697;cursor:pointer}
.hsm-messenger-quote{margin:8px 0;padding:9px 11px;border:0;border-inline-start:3px solid #9062d8;border-radius:10px;background:#e8e0f54d;color:#5a4b78}.hsm-messenger-quote strong{font-size:12px}.hsm-messenger-quote p{font-size:12px;line-height:1.8;margin:4px 0;white-space:pre-wrap;max-height:110px;overflow:auto}
.hsm-messenger-attachment{display:grid;gap:8px;margin-top:10px}.hsm-messenger-attachment a{display:block;padding:9px 11px;min-height:44px;border:1px solid #d9def1;border-radius:12px;background:#ffffffc9;color:#563c94;font-size:13px;overflow-wrap:anywhere}.hsm-messenger-attachment img{display:block;width:100%;height:auto;max-height:350px;object-fit:contain;border-radius:13px}
.hsm-messenger [data-conversation-compose]{padding:12px;background:#fff;border:1px solid #dedff0;border-radius:22px;box-shadow:0 5px 20px #634b8e09}.hsm-messenger [data-conversation-compose][hidden],.hsm-messenger [hidden]{display:none!important}.hsm-messenger-text{display:block!important;margin:0!important}.hsm-messenger-text textarea{display:block;width:100%;min-height:76px;max-height:220px;padding:12px;border:0!important;outline-offset:0;background:#f7f7fc!important;font:inherit;font-size:16px!important;line-height:1.8;resize:vertical;border-radius:14px}
.hsm-messenger-compose-actions{display:flex;align-items:center;gap:9px;margin-top:9px}.hsm-messenger-compose-actions>small{flex:1;font-size:11px;color:#73788c}.hsm-messenger-attach{position:relative;display:grid!important;place-items:center;width:44px;height:44px;min-width:44px;margin:0!important;border:1px solid #ddd6ed;border-radius:14px;background:linear-gradient(135deg,#eee5ff,#e7f6ff);color:#7443b4;font-size:27px;cursor:pointer}.hsm-messenger-attach input{position:absolute;inset:0;opacity:0;width:100%;height:100%;cursor:pointer}.hsm-messenger-attach:focus-within,.hsm-messenger button:focus-visible{outline:3px solid #5f9fe8;outline-offset:2px}.hsm-messenger-compose-actions [data-conversation-send]{min-height:44px;white-space:nowrap}
.hsm-messenger-reply,.hsm-messenger-file{display:flex;justify-content:space-between;align-items:center;gap:10px;margin-bottom:10px;padding:9px 12px;border-inline-start:3px solid #a17ada;border-radius:12px;background:#f1ecfc;min-width:0}.hsm-messenger-reply>div{min-width:0}.hsm-messenger-reply strong{font-size:13px}.hsm-messenger-reply p,.hsm-messenger-file span{margin:4px 0;font-size:12px;overflow-wrap:anywhere;max-height:66px;overflow:auto}.hsm-messenger-reply button,.hsm-messenger-file button{flex:none;min-width:44px;min-height:44px;border:1px solid #dcd2ed;border-radius:12px;background:#fff;color:#704ca4;font:inherit;font-size:12px;cursor:pointer}
.hsm-app.hsm-student-skin .hsm-messenger .hsm-learning-conversation-scroll{background:radial-gradient(ellipse at 5% 8%,#d9f7ef,transparent 48%),radial-gradient(ellipse at 95% 85%,#f9e5f5,transparent 50%),linear-gradient(145deg,#e8e4ff,#f8f4ff);border-color:#d8c9f3}.hsm-app.hsm-student-skin .hsm-messenger .is-mine>.hsm-messenger-bubble{background:linear-gradient(130deg,#e9d9ff,#f1e7ff);border-color:#d6baf0}
@media(max-width:600px){.hsm-messenger-heading{gap:7px}.hsm-messenger-heading h4{font-size:15px}.hsm-messenger-heading small{font-size:11px}.hsm-messenger-heading .hsm-learning-button{padding:7px 9px;font-size:12px}.hsm-messenger .hsm-learning-conversation-scroll{max-height:440px;padding:14px 8px;gap:14px}.hsm-messenger-avatar{width:29px;height:29px;flex-basis:29px;font-size:13px;border-radius:11px}.hsm-messenger.hsm-learning-conversation .hsm-learning-chat-message,.hsm-app .hsm-messenger.hsm-learning-conversation .hsm-learning-chat-message{width:98%;gap:6px}.hsm-messenger-bubble{padding:10px 11px}.hsm-messenger-compose-actions{gap:7px}.hsm-messenger-compose-actions>small{max-width:90px}.hsm-messenger [data-conversation-compose]{padding:10px}}
@media(prefers-reduced-motion:reduce){.hsm-messenger *{scroll-behavior:auto!important}}