/* NÚT MỞ CHAT */
.onc-toggle-btn {
    position: fixed; right: 0; top: 45%; transform: translateY(-50%);
    background: #6200ea; color: #fff; padding: 12px 8px; border-radius: 8px 0 0 8px;
    cursor: pointer; z-index: 99999; writing-mode: vertical-rl; font-weight: bold; font-size: 13px;
    box-shadow: -2px 2px 8px rgba(0,0,0,0.2);
}
.onc-toggle-btn.hidden { right: -50px; }

/* KHUNG CHAT - CAO HƠN (bottom: 180px) */
.onc-chat-box {
    position: fixed;
    right: 20px;
    bottom: 180px; /* Nâng cao lên */
    width: 320px; height: 450px;
    background: #fff; z-index: 99999;
    box-shadow: 0 5px 30px rgba(0,0,0,0.2); border-radius: 12px;
    display: flex; flex-direction: column;
    transform: scale(0); transform-origin: right center; opacity: 0;
    transition: all 0.25s ease-out; pointer-events: none;
}
.onc-chat-box.open { transform: scale(1); opacity: 1; pointer-events: all; }

.onc-header { background: #6200ea; color: #fff; padding: 12px; display: flex; align-items: center; border-radius: 12px 12px 0 0; }
.onc-avatar img { width: 34px; height: 34px; border-radius: 50%; border: 2px solid #fff; margin-right: 8px; }
.onc-title strong { font-size: 14px; }
.onc-close { margin-left: auto; cursor: pointer; font-size: 20px; opacity: 0.8; }
.onc-body { flex-grow: 1; background: #f2f4f7; padding: 12px; overflow-y: auto; }

.onc-msg { margin-bottom: 6px; max-width: 85%; padding: 8px 12px; border-radius: 14px; font-size: 13px; clear: both; word-wrap: break-word; }
.onc-msg.guest { float: right; background: #6200ea; color: #fff; border-bottom-right-radius: 2px; }
.onc-msg.admin { float: left; background: #fff; color: #333; border-bottom-left-radius: 2px; box-shadow: 0 1px 2px rgba(0,0,0,0.1); }
.onc-msg.system { width: 100%; text-align: center; color: #999; font-size: 11px; margin: 10px 0; }
.chat-img-preview { max-width: 100%; border-radius: 8px; margin-top: 5px; cursor: pointer; border: 1px solid rgba(0,0,0,0.1); }
.onc-msg.guest .chat-img-preview { border: 1px solid rgba(255,255,255,0.3); }

.onc-msg.guest:has(.onc-order-card) { background: transparent; padding: 0; }
.onc-order-card { background: #fff; border-radius: 8px; border: 1px solid #ddd; width: 230px; margin-top: 5px; }
.onc-order-card .card-head { background: #fafafa; padding: 5px 8px; font-size: 10px; font-weight: bold; color: #777; border-bottom: 1px solid #eee; text-transform: uppercase; }
.onc-order-card .card-body { padding: 8px; display: flex; gap: 8px; }
.onc-order-card img { width: 45px; height: 45px; border-radius: 4px; object-fit: cover; }
.onc-order-card .card-title { font-size: 12px; font-weight: bold; line-height: 1.3; color:#333; display: -webkit-box; -webkit-line-clamp: 2; -webkit-box-orient: vertical; overflow: hidden; }
.onc-order-card .card-foot { border-top: 1px solid #eee; padding: 5px 8px; font-size: 10px; color: #999; text-align: right; }

.onc-footer { padding: 8px; background: #fff; border-top: 1px solid #eee; display: flex; align-items: center; border-radius: 0 0 12px 12px; }
#onc-input { flex-grow: 1; border: none; background: #f0f2f5; padding: 8px 12px; border-radius: 20px; outline: none; font-size: 13px; }
#onc-order-btn, #onc-attach-btn { background: none; border: none; font-size: 18px; cursor: pointer; margin-right: 5px; color: #555; }
#onc-send-btn { background: none; border: none; font-size: 18px; color: #6200ea; cursor: pointer; margin-left: 5px; }

.onc-order-list-overlay { position: absolute; inset: 0; background: rgba(0,0,0,0.5); z-index: 10; display: flex; align-items: flex-end; border-radius: 12px; }
.onc-order-list-container { width: 100%; height: 75%; background: #fff; border-radius: 12px 12px 0 0; display: flex; flex-direction: column; animation: slideUp 0.3s; }
@keyframes slideUp { from {transform:translateY(100%)} to {transform:translateY(0)} }
.onc-list-header { padding: 10px 15px; font-weight: bold; border-bottom: 1px solid #eee; display: flex; justify-content: space-between; font-size: 13px; }
.onc-list-body { overflow-y: auto; flex-grow: 1; }
.onc-order-item-select { padding: 8px 12px; border-bottom: 1px solid #f0f0f0; display: flex; align-items: center; cursor: pointer; }
.onc-order-item-select:hover { background: #f5f5f5; }
.onc-order-item-select img { width: 36px; height: 36px; border-radius: 4px; margin-right: 10px; }
.onc-order-item-select .ord-id { font-weight: bold; font-size: 12px; }