/* ═══════════════════════════════════════════════════════════════
   Plan Chat Home — мессенджер на главной
   Извлечено из checklist_operational.css строки 4681–4927
   ═══════════════════════════════════════════════════════════════ */

        /* ===== PLAN CHAT ON HOME ===== */
        .plan-chat-block {
            background: var(--color-surface);
            border: 1px solid var(--color-border-strong);
            border-radius: var(--radius-lg);
            padding: var(--space-3);
            display: flex;
            flex-direction: column;
            gap: var(--space-2);
            min-height: 280px;
            box-shadow: 0 1px 3px rgba(15, 23, 42, 0.06);
        }
        /* Свёрнутое состояние: полоска-заголовок ~48px, раскрытие по клику */
        .plan-chat-block.is-collapsed {
            min-height: 0;
            gap: var(--space-0);
            padding: 8px 12px;
            cursor: pointer;
            transition: background 0.12s ease, border-color 0.12s ease;
        }
        .plan-chat-block.is-collapsed:hover {
            background: var(--color-bg-tint);
            border-color: var(--color-border-strong);
        }
        .plan-chat-block.is-collapsed .plan-chat-body { display: none; }
        .plan-chat-head {
            display: flex; align-items: baseline; justify-content: space-between;
            gap: var(--space-3); flex-wrap: wrap;
            position: relative;
        }
        .plan-chat-block .plan-chat-head::before {
            content: '▾';
            display: inline-block;
            color: var(--color-text-secondary);
            font-size: var(--text-xs);
            margin-right: 6px;
            transform-origin: center;
            transition: transform 0.18s ease;
        }
        .plan-chat-block.is-collapsed .plan-chat-head::before {
            transform: rotate(-90deg);
        }
        .plan-chat-title { margin: var(--space-0); font-size: var(--text-base); font-weight: 700; color: var(--color-text); }
        .plan-chat-hint { font-size: var(--text-xs); color: var(--color-text-secondary); }
        .plan-chat-block.is-collapsed .plan-chat-hint::after {
            content: ' · клик, чтобы открыть';
            color: var(--color-primary);
            font-weight: 500;
        }
        .plan-chat-body {
            display: grid;
            grid-template-columns: 240px 1fr;
            gap: var(--space-3);
            min-height: 240px;
        }
        .pc-sidebar {
            display: flex; flex-direction: column; gap: var(--space-2);
            background: var(--color-gray-50);
            border: 1px solid var(--color-bg-subtle);
            border-radius: var(--radius-xl);
            padding: var(--space-2);
            min-height: 0;
        }
        .pc-search-wrap { display: flex; }
        .pc-search {
            width: 100%;
            border: 1px solid var(--color-border);
            border-radius: var(--radius-md);
            padding: var(--space-2);
            font-size: var(--text-xs);
            background: var(--color-surface);
            outline: none;
        }
        .pc-search:focus { border-color: var(--color-primary); }
        .pc-rooms-list { overflow-y: auto; flex: 1; display: flex; flex-direction: column; gap: var(--space-1); max-height: 420px; }
        .pc-rooms-empty { font-size: var(--text-xs); color: var(--color-gray-400); padding: var(--space-2); text-align: center; }
        .pc-room {
            display: flex; flex-direction: column; gap: 2px;
            padding: var(--space-2);
            border-radius: var(--radius-md);
            cursor: pointer;
            transition: background 0.12s;
            position: relative;
        }
        .pc-room:hover { background: var(--color-primary-25); }
        .pc-room.is-active { background: var(--color-primary-50); }
        .pc-room-top { display: flex; align-items: center; gap: var(--space-2); }
        .pc-room-star { font-size: var(--text-xs); color: #f5b301; }
        .pc-room-name {
            font-size: var(--text-xs); font-weight: 600; color: var(--color-text);
            white-space: normal; overflow: hidden; 
            flex: 1;
        }
        .pc-room-unread {
            background: var(--color-primary); color: var(--color-surface); font-size: var(--text-xs); font-weight: 700;
            border-radius: var(--radius-pill); padding: 1px 8px; min-width: 18px; text-align: center;
        }
        .pc-room-last {
            font-size: var(--text-xs); color: var(--color-text-secondary);
            white-space: normal; overflow: hidden; 
        }

        .pc-pane {
            display: flex; flex-direction: column;
            background: var(--color-bg-faint);
            border: 1px solid var(--color-bg-subtle);
            border-radius: var(--radius-xl);
            min-height: 220px;
            position: relative;
        }
        .pc-pane-head {
            padding: 8px 12px;
            border-bottom: 1px solid var(--color-bg-subtle);
            background: var(--color-surface);
            border-radius: 12px 12px 0 0;
        }
        .pc-pane-title { font-size: var(--text-sm); font-weight: 700; color: var(--color-text); }
        .pc-pane-sub { font-size: var(--text-xs); color: var(--color-text-secondary); margin-top: 2px; }
        .pc-messages {
            flex: 1; overflow-y: auto; padding: 8px 12px;
            display: flex; flex-direction: column; gap: var(--space-2);
            max-height: 320px;
        }
        .pc-msg {
            display: flex; gap: var(--space-2); align-items: flex-start;
        }
        .pc-msg.is-own { flex-direction: row-reverse; }
        .pc-msg-avatar {
            width: 28px; height: 28px; border-radius: 50%;
            background: #e0e7ff; color: #3949ab;
            display: flex; align-items: center; justify-content: center;
            font-size: var(--text-xs); font-weight: 700; flex-shrink: 0;
        }
        .pc-msg-bubble {
            background: var(--color-surface); border: 1px solid var(--color-border);
            border-radius: var(--radius-xl);
            padding: 8px 12px;
            max-width: 70%;
            font-size: var(--text-xs); color: var(--color-text);
            position: relative;
        }
        .pc-msg.is-own .pc-msg-bubble { background: var(--color-primary-50); border-color: #bfdbfe; }
        .pc-msg-author { font-size: var(--text-xs); font-weight: 700; color: var(--color-text-secondary); margin-bottom: 2px; }
        .pc-msg.is-own .pc-msg-author { text-align: right; color: #0040DD; }
        .pc-msg-text { white-space: pre-wrap; word-break: break-word; }
        .pc-msg-time { font-size: var(--text-xs); color: var(--color-gray-400); margin-top: 3px; text-align: right; }
        .pc-msg-mention { background: var(--color-warning-50); color: #92400e; padding: 0 3px; border-radius: var(--radius-xs); font-weight: 600; }
        .pc-msg-file {
            display: inline-flex; align-items: center; gap: var(--space-2);
            margin-top: 4px; padding: 4px 8px;
            background: var(--color-gray-100); border-radius: var(--radius-md);
            text-decoration: none; color: var(--color-primary); font-size: var(--text-xs);
        }
        .pc-msg-file img { max-width: 200px; max-height: 200px; border-radius: var(--radius-sm); display: block; }
        .pc-msg-reactions {
            display: flex; gap: var(--space-1); flex-wrap: wrap; margin-top: 4px;
        }
        .pc-msg-reaction {
            display: inline-flex; align-items: center; gap: 3px;
            background: var(--color-surface); border: 1px solid var(--color-border);
            border-radius: var(--radius-pill); padding: 1px 8px;
            font-size: var(--text-xs); cursor: pointer;
            transition: background 0.12s;
        }
        .pc-msg-reaction:hover { background: var(--color-gray-100); }
        .pc-msg-reaction.is-mine { background: var(--color-primary-25); border-color: #bfdbfe; color: #0040DD; }
        .pc-msg-react-btn {
            opacity: 0; transition: opacity 0.12s;
            background: var(--color-surface); border: 1px solid var(--color-border);
            border-radius: var(--radius-pill); padding: 1px 8px;
            font-size: var(--text-xs); cursor: pointer;
            margin-top: 4px;
        }
        .pc-msg:hover .pc-msg-react-btn { opacity: 0.8; }
        .pc-msg-react-btn:hover { opacity: 1 !important; background: var(--color-gray-100); }

        .pc-input-row {
            position: relative;
            display: flex; gap: var(--space-2); align-items: flex-end;
            padding: 8px 12px;
            border-top: 1px solid var(--color-bg-subtle);
            background: var(--color-surface);
            border-radius: 0 0 12px 12px;
        }
        .pc-attach-btn,
.pc-emoji-btn,
.pc-send-btn {
            border: none; background: transparent;
            cursor: pointer; font-size: var(--text-md);
            width: 32px; height: 32px;
            display: flex; align-items: center; justify-content: center;
            border-radius: var(--radius-sm); transition: background 0.12s;
            flex-shrink: 0;
        }
        .pc-attach-btn:hover,
.pc-emoji-btn:hover { background: var(--color-gray-100); }
        .pc-send-btn { color: var(--color-primary); font-size: var(--text-lg); }
        .pc-send-btn:hover { background: var(--color-primary-25); }
        .pc-input {
            flex: 1; resize: none; border: 1px solid var(--color-border);
            border-radius: var(--radius-md); padding: var(--space-2);
            font-size: var(--text-xs); font-family: inherit;
            max-height: 100px; line-height: 1.4;
            outline: none;
        }
        .pc-input:focus { border-color: var(--color-primary); }

        .pc-mention-popup,
.pc-emoji-popup {
            position: absolute;
            bottom: 100%; left: 50px;
            background: var(--color-surface);
            border: 1px solid var(--color-border);
            border-radius: var(--radius-lg);
            box-shadow: 0 8px 24px rgba(0,0,0,0.12);
            padding: var(--space-2);
            z-index: 100;
            max-height: 200px; overflow-y: auto;
        }
        .pc-mention-popup { min-width: 180px; }
        .pc-mention-item {
            padding: var(--space-2);
            font-size: var(--text-xs); cursor: pointer;
            border-radius: var(--radius-sm);
        }
        .pc-mention-item:hover,
.pc-mention-item.is-active { background: var(--color-primary-25); }
        .pc-emoji-popup {
            display: grid;
            grid-template-columns: repeat(5, 1fr);
            gap: 2px;
        }
        .pc-emoji-popup span {
            cursor: pointer;
            font-size: var(--text-lg);
            width: 32px; height: 32px;
            display: flex; align-items: center; justify-content: center;
            border-radius: var(--radius-sm);
        }
        .pc-emoji-popup span:hover { background: var(--color-gray-100); }

        @media (max-width: 768px) {
            .plan-chat-body { grid-template-columns: 1fr; }
            .pc-sidebar { max-height: 200px; }
            .pc-pane { min-height: 300px; }
        }