:root { color: #111; background: #d9d9d9; font-family: SimSun, "Microsoft YaHei", Arial, sans-serif; }
* { box-sizing: border-box; }
body { margin: 0; min-width: 320px; background: repeating-linear-gradient(0deg, #d6d6d6, #d6d6d6 1px, #dedede 1px, #dedede 3px); }
button, textarea { font: inherit; }
.chat-room { width: min(940px, calc(100% - 24px)); margin: 24px auto; border: 2px solid #1d3978; background: #eee; box-shadow: 3px 3px 0 #888; }
.chat-banner { min-height: 52px; padding: 10px 13px; display: flex; align-items: center; justify-content: space-between; gap: 12px; color: #fff; background: linear-gradient(#285ba9, #0e3175); border-bottom: 2px solid #071d50; }
.chat-logo { color: #ffef58; font: 700 13px Arial, sans-serif; letter-spacing: 1px; margin-right: 14px; }.chat-title { font-size: 22px; font-weight: bold; text-shadow: 1px 1px #00164d; }
.chat-banner-tools { display: flex; align-items: center; gap: 12px; font-size: 13px; white-space: nowrap; }.chat-banner-tools button { color: #fff; background: transparent; border: 0; text-decoration: underline; cursor: pointer; }
.chat-sub-banner { min-height: 30px; padding: 7px 12px; background: #f9f6ca; border-bottom: 1px solid #9b9b71; font-size: 13px; }.status-light { display: inline-block; width: 9px; height: 9px; border-radius: 50%; background: #38a52e; box-shadow: 0 0 5px #38a52e; }
.chat-layout { display: grid; grid-template-columns: 175px minmax(0, 1fr) 185px; min-height: 520px; }.chat-panel { border-right: 1px solid #9ca3b1; background: #f5f5f5; }.chat-panel:last-child { border-right: 0; }.chat-panel h2, .chat-heading { margin: 0; padding: 7px 9px; color: #fff; background: #496a9c; border-bottom: 1px solid #1a3463; font-size: 14px; font-weight: bold; }
.chat-members { background: #edf1f8; }.chat-members ul { list-style: none; margin: 0; padding: 6px; }.chat-members li { display: flex; align-items: center; gap: 5px; min-height: 27px; padding: 3px; border-bottom: 1px dotted #b8bfd0; font-size: 13px; }.avatar { width: 20px; height: 20px; object-fit: cover; border: 1px solid #5570a5; background: #d4dfed; }.avatar-fallback { width: 20px; height: 20px; padding-top: 2px; color: #fff; background: #6381b4; text-align: center; font: 12px Arial; }.user-name { overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }.admin-badge { margin-left: auto; padding: 1px 3px; color: #fff; background: #c73420; border: 1px solid #7e180a; font-size: 10px; }.member-hint { padding: 0 8px; color: #666; font-size: 12px; }
.chat-main { display: flex; flex-direction: column; min-width: 0; background: white; }.chat-heading { display: flex; justify-content: space-between; }.chat-heading small { color: #e5ecff; font-weight: normal; }.message-list { flex: 1; overflow-y: auto; min-height: 330px; max-height: 420px; padding: 10px 12px; font-family: "Courier New", SimSun, monospace; font-size: 14px; line-height: 1.7; }.chat-line { display: flex; gap: 5px; align-items: flex-start; word-break: break-word; }.message-time { color: #777; white-space: nowrap; }.message-name { font-weight: bold; }.is-admin { color: #b22222; }.system-message { margin: 3px 0; color: #66803a; font-family: SimSun, sans-serif; }.chat-composer { padding: 8px; background: #dce5f2; border-top: 1px solid #7890b5; }.chat-composer label { vertical-align: top; font-size: 13px; }.chat-composer textarea { width: calc(100% - 32px); resize: vertical; padding: 5px; border: 2px inset #fff; background: #fffef5; outline: 0; }.composer-actions { display: flex; align-items: center; justify-content: flex-end; gap: 8px; margin-top: 5px; color: #555; font-size: 12px; }.classic-button, .composer-actions button { padding: 3px 11px; border: 2px outset #eee; color: #111; background: #d7d7d7; cursor: pointer; }.classic-button:active, .composer-actions button:active { border-style: inset; }.classic-button:disabled, .composer-actions button:disabled { color: #777; cursor: not-allowed; }
.chat-info { padding-bottom: 10px; background: #fffdeb; }.chat-info h2 { margin-bottom: 8px; font-size: 13px; }.chat-info p { margin: 7px 10px 14px; font-size: 13px; line-height: 1.5; }.chat-info hr { border: 0; border-top: 1px dotted #9d9d82; }.chat-info .quiet-note { color: #705f47; font-size: 12px; }.chat-footer { padding: 8px; color: #fff; background: #2d4c81; text-align: center; font-size: 12px; } dialog { max-width: 420px; border: 2px solid #1d3978; box-shadow: 4px 4px #888; } dialog::backdrop { background: rgba(0, 0, 0, .35); }
@media (max-width: 760px) { .chat-room { width: 100%; margin: 0; border-width: 0; box-shadow: none; }.chat-layout { grid-template-columns: 130px minmax(0, 1fr); }.chat-info { display: none; }.chat-banner { align-items: flex-start; }.chat-banner-tools { align-items: flex-end; flex-direction: column; gap: 3px; }.chat-title { font-size: 18px; }.message-list { min-height: 360px; }.chat-heading small { display: none; } }
@media (max-width: 480px) { .chat-layout { grid-template-columns: 1fr; }.chat-members { display: none; }.chat-banner { min-height: 58px; }.chat-logo { display: block; margin-bottom: 4px; }.chat-banner-tools { font-size: 12px; }.message-list { max-height: none; } }