.tc-layout{display:grid;grid-template-columns:250px minmax(0,1fr);gap:16px;align-items:stretch}.tc-sidebar{padding:20px}.tc-sidebar h2{font-size:1.15rem;margin:0 0 16px}.tc-sidebar>small{display:block;color:#64748b;font-size:14px;line-height:1.7;margin-top:20px}.tc-channel-list{display:grid;gap:6px;margin-top:18px}.tc-channel{display:flex;align-items:center;justify-content:space-between;gap:12px;width:100%;padding:12px;border:0;border-radius:9px;text-align:start;background:transparent;font:inherit;color:#24344b;cursor:pointer}.tc-channel.selected{background:#e9effb;color:#17478d;font-weight:700}.tc-channel span{overflow-wrap:anywhere}.tc-channel b{font-size:14px;background:#2458a5;color:white;border-radius:20px;padding:2px 8px}.tc-main{padding:0;min-width:0;overflow:hidden}.tc-head{display:flex;justify-content:space-between;gap:12px;align-items:center;padding:20px;border-bottom:1px solid #e1e8f0}.tc-head h2{font-size:1.25rem;margin:0 0 5px;overflow-wrap:anywhere}.tc-members{border:0;background:transparent;padding:0;font:inherit;font-size:14px;color:#586b84;cursor:pointer}.tc-history-tools{display:flex;gap:8px;padding:10px 20px}.tc-history-tools .btn{font-size:14px}.tc-messages{height:440px;overflow-y:auto;overscroll-behavior:contain;padding:0 20px 20px;display:flex;flex-direction:column;gap:16px}.tc-message{padding:14px 16px;border:1px solid #e2e9f1;background:#f8fafc;border-radius:12px;max-width:90%;overflow-wrap:anywhere}.tc-message.mine{align-self:flex-end;background:#eef3fe;border-color:#d7e2f7}.tc-message>div{display:flex;gap:15px;align-items:baseline;flex-wrap:wrap}.tc-message time{font-size:13px;color:#63748b}.tc-message p{font-size:16px;line-height:1.9;white-space:pre-wrap;margin:8px 0 0}.tc-file{display:flex;align-items:center;justify-content:space-between;gap:15px;flex-wrap:wrap;background:white;padding:12px;border:1px solid #d9e2ed;border-radius:8px;font:inherit;font-size:14px;margin-top:10px;text-align:start;cursor:pointer;width:100%;color:#1d477f}.tc-file small{color:#64748b;font-size:13px}#tc-compose{padding:16px 20px;border-top:1px solid #e1e8f0}#tc-text{width:100%;box-sizing:border-box;border:1px solid #bccbde;border-radius:10px;padding:12px;font:inherit;font-size:16px;resize:vertical;min-height:85px}.tc-compose-actions{display:flex;gap:12px;align-items:center;flex-wrap:wrap;margin-top:12px}.tc-compose-actions small{font-size:14px;color:#64748b}.tc-compose-actions>[type=submit]{margin-inline-start:auto}.tc-upload{position:relative;overflow:hidden;cursor:pointer}.tc-upload input{position:absolute;inset:0;opacity:0;width:100%;cursor:pointer}.tc-pending-file{display:inline-flex;gap:8px;align-items:center;margin:8px 0 0 8px;font-size:14px}.tc-pending-file .btn{padding:4px 8px;font-size:14px}#tc-error,.tc-dialog-error{color:#b42318;font-size:14px;margin-bottom:0;white-space:pre-wrap}.tc-empty{padding:18px;color:#64748b;line-height:1.8;font-size:16px}.tc-start{padding:60px 25px}.tc-dialog{border:1px solid #dbe3ee;border-radius:16px;padding:24px;width:min(520px,calc(100vw - 36px));max-height:85dvh;overflow:auto;color:#22324b}.tc-dialog::backdrop{background:#0c172766}.tc-dialog header{display:flex;justify-content:space-between;align-items:center;gap:12px}.tc-dialog h2{font-size:1.25rem;overflow-wrap:anywhere}.tc-dialog>form>label{display:grid;gap:8px;margin:15px 0}.tc-dialog input:not([type=checkbox]){font:inherit;width:100%;box-sizing:border-box;padding:12px;border:1px solid #bfcddd;border-radius:8px}.tc-dialog fieldset{border:1px solid #dbe3ee;border-radius:10px;padding:14px;margin:16px 0}.tc-dialog fieldset p{font-size:14px;color:#64748b}.tc-people{max-height:270px;overflow:auto;display:grid;gap:8px}.tc-people label{display:flex;gap:12px;align-items:center;padding:8px;background:#f6f8fc;border-radius:8px;font-size:16px}.tc-people small{display:block;font-size:14px;color:#64748b}.tc-channel:focus-visible,.tc-members:focus-visible,.tc-file:focus-visible{outline:3px solid #3875c8;outline-offset:2px}.sr-only{position:absolute;width:1px;height:1px;overflow:hidden;clip:rect(0,0,0,0)}@media(max-width:760px){.tc-layout{grid-template-columns:1fr}.tc-sidebar{padding:14px}.tc-channel-list{display:flex;overflow-x:auto;padding-bottom:5px;gap:8px;margin-top:12px}.tc-channel{width:auto;white-space:nowrap;flex-shrink:0}.tc-sidebar>small{margin-top:8px}.tc-head{padding:14px}.tc-history-tools{padding:10px 14px}.tc-messages{height:380px;padding:0 14px 14px}.tc-message{max-width:100%;padding:12px}.tc-compose-actions small{width:100%;order:3}#tc-compose{padding:14px}.tc-dialog{padding:18px}.tc-start{padding:25px}}