.support-chat { position: fixed; right: max(20px, env(safe-area-inset-right)); bottom: max(20px, env(safe-area-inset-bottom)); z-index: 60; }
.chat-launcher { display: flex; align-items: center; gap: 9px; margin-left: auto; padding: 12px 16px; border: 1px solid var(--border-strong); border-radius: 999px; background: var(--panel); color: var(--text); box-shadow: var(--shadow-sm); cursor: pointer; font: inherit; }
.chat-launcher:hover { border-color: var(--accent); color: var(--accent); }
.chat-panel { display: flex; flex-direction: column; width: min(370px, calc(100vw - 40px)); height: min(540px, calc(100dvh - 110px)); margin-bottom: 12px; border: 1px solid var(--border); border-radius: var(--radius-lg); background: var(--panel); box-shadow: var(--shadow-md); overflow: hidden; }
.chat-header { display: flex; justify-content: space-between; gap: 12px; padding: 16px; border-bottom: 1px solid var(--border); }
.chat-header small { display: block; margin-top: 4px; color: var(--muted); font-size: 12px; }
.chat-close { align-self: flex-start; border: 0; background: transparent; color: var(--text); font-size: 26px; cursor: pointer; padding: 0 6px; }
.chat-status { margin: 0; padding: 8px 16px; font-size: 12px; color: var(--muted); }
.chat-messages { flex: 1; min-height: 80px; overflow-y: auto; overscroll-behavior: contain; padding: 8px 16px; }
.chat-empty { color: var(--muted); font-size: 13px; }
.chat-message { max-width: 90%; margin: 0 auto 12px 0; padding: 10px 12px; border-radius: 12px; background: var(--panel-2); border: 1px solid var(--border); overflow-wrap: anywhere; }
.chat-message-own { margin-left: auto; margin-right: 0; background: var(--accent-soft); }
.chat-message p { margin: 4px 0; white-space: pre-wrap; }
.chat-message small, .chat-message time { font-size: 11px; color: var(--muted); }
.chat-message time { display: block; text-align: right; }
.chat-form { display: flex; flex-direction: column; gap: 8px; padding: 12px 16px; border-top: 1px solid var(--border); }
.chat-input-label { font-size: 12px; color: var(--muted); }
.chat-form textarea { width: 100%; resize: none; padding: 10px; border: 1px solid var(--border-strong); border-radius: 8px; background: var(--panel); color: var(--text); font: inherit; font-size: 16px; }
.chat-form button { align-self: flex-end; border: 0; border-radius: 8px; padding: 9px 16px; background: var(--accent); color: white; font: inherit; cursor: pointer; }
.chat-form button:disabled { opacity: .5; cursor: default; }
.chat-error { margin: 0; padding: 8px 16px; color: var(--text); font-size: 13px; }
.chat-retry { margin: 0 16px 8px; padding: 8px; background: var(--panel-2); color: var(--text); border: 1px solid var(--border); border-radius: 8px; cursor: pointer; }
.chat-operator { display: flex; flex-direction: column; height: 650px; max-height: 80dvh; max-width: 760px; margin-bottom: 24px; border: 1px solid var(--border); border-radius: var(--radius); background: var(--panel); }
.chat-thread { display: flex; flex-direction: column; flex: 1; min-height: 0; }
.chat-list { list-style: none; margin: 0; padding: 0; overflow-y: auto; flex: 1; }
.chat-item { display: block; width: 100%; padding: 10px 16px; text-align: left; background: none; border: 0; border-bottom: 1px solid var(--border); color: var(--text); cursor: pointer; font: inherit; }
.chat-item:hover { background: var(--panel-2); }
.chat-item.is-awaiting { border-left: 3px solid var(--accent); }
.chat-item.is-awaiting strong { color: var(--accent); }
.chat-item-top { display: flex; justify-content: space-between; gap: 8px; }
.chat-item-top small { color: var(--muted); }
.chat-item-text { display: block; margin-top: 2px; font-size: 13px; color: var(--muted); overflow: hidden; text-overflow: ellipsis; white-space: nowrap; }
.chat-list-empty { padding: 16px; color: var(--muted); font-size: 13px; }
.chat-badge { padding: 0 7px; border-radius: 10px; background: var(--accent); color: #fff; font-size: 12px; line-height: 20px; }
.chat-back { display: inline-flex; align-items: center; gap: 8px; padding: 5px 12px; border: 1px solid var(--border-strong); border-radius: 999px; background: var(--panel); color: var(--text); font: inherit; font-size: 13px; cursor: pointer; }
.chat-back:hover { border-color: var(--accent); color: var(--accent); }
@media (max-width: 480px) { .support-chat { right: 12px; bottom: max(12px, env(safe-area-inset-bottom)); } .chat-panel { width: calc(100vw - 24px); } }