/* 在线客服 - 前台悬浮窗 */
.support-widget {
    position: fixed;
    bottom: 24px;
    z-index: 2500;
}

.support-widget[data-position="right"] { right: 24px; }
.support-widget[data-position="left"] { left: 24px; }
.support-widget.is-hidden { display: none; }

.support-fab {
    width: 56px;
    height: 56px;
    border: none;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--primary), #6366f1);
    color: #fff;
    box-shadow: var(--shadow-md);
    cursor: pointer;
    position: relative;
    transition: transform 0.2s ease;
}

.support-fab:hover,
.support-fab.is-active {
    transform: scale(1.05);
}

.support-fab-icon {
    font-size: 24px;
}

.support-fab-badge {
    position: absolute;
    top: -4px;
    right: -4px;
    min-width: 20px;
    height: 20px;
    padding: 0 6px;
    border-radius: 999px;
    background: var(--danger);
    color: #fff;
    font-size: 11px;
    line-height: 20px;
    text-align: center;
}

.support-panel {
    position: absolute;
    bottom: 72px;
    width: min(360px, calc(100vw - 32px));
    height: 480px;
    background: #fff;
    border-radius: 16px;
    box-shadow: 0 12px 40px rgba(15, 23, 42, 0.18);
    display: flex;
    flex-direction: column;
    overflow: hidden;
}

.support-panel[hidden] {
    display: none !important;
}

.support-widget[data-position="right"] .support-panel { right: 0; }
.support-widget[data-position="left"] .support-panel { left: 0; }

.support-panel-head {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 14px 16px;
    background: linear-gradient(135deg, var(--primary), #6366f1);
    color: #fff;
}

.support-panel-status {
    display: inline-block;
    margin-left: 8px;
    padding: 2px 8px;
    border-radius: 999px;
    background: rgba(255, 255, 255, 0.2);
    font-size: 12px;
}

.support-panel-close {
    border: none;
    background: transparent;
    color: #fff;
    font-size: 24px;
    cursor: pointer;
    line-height: 1;
}

.support-panel-body {
    flex: 1;
    overflow-y: auto;
    padding: 16px;
    background: #f8fafc;
}

.support-welcome {
    margin-bottom: 12px;
    padding: 10px 12px;
    border-radius: 10px;
    background: #eef2ff;
    color: var(--gray-700);
    font-size: 13px;
}

.support-messages {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.support-msg-system {
    text-align: center;
}

.support-msg-system-text,
.support-msg-system > div {
    display: inline-block;
    padding: 6px 10px;
    border-radius: 999px;
    background: #e2e8f0;
    color: var(--gray-600);
    font-size: 12px;
}

.support-msg-meta {
    font-size: 11px;
    color: var(--gray-500);
    margin-bottom: 4px;
}

.support-msg-bubble {
    display: inline-block;
    max-width: 85%;
    padding: 10px 12px;
    border-radius: 12px;
    font-size: 14px;
    line-height: 1.5;
    word-break: break-word;
}

.support-msg-user {
    text-align: right;
}

.support-msg-user .support-msg-bubble {
    background: var(--primary);
    color: #fff;
    border-bottom-right-radius: 4px;
}

.support-msg-admin {
    text-align: left;
}

.support-msg-admin .support-msg-bubble {
    background: #fff;
    border: 1px solid var(--gray-200);
    border-bottom-left-radius: 4px;
}

.support-panel-compose {
    padding: 12px;
    border-top: 1px solid var(--gray-200);
    background: #fff;
}

.support-guest-name {
    margin-bottom: 8px;
}

.support-guest-name input {
    width: 100%;
    padding: 8px 10px;
    border: 1px solid var(--gray-200);
    border-radius: 8px;
    font-size: 14px;
}

.support-input-row {
    display: flex;
    gap: 8px;
    align-items: flex-end;
}

.support-input-row textarea {
    flex: 1;
    resize: none;
    min-height: 44px;
    padding: 10px 12px;
    border: 1px solid var(--gray-200);
    border-radius: 10px;
    font-size: 14px;
    font-family: inherit;
}

/* 后台客服 */
.support-stats {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 16px;
    margin-bottom: 16px;
}

.support-stat-card {
    background: #fff;
    border: 1px solid var(--gray-200);
    border-radius: 12px;
    padding: 16px 18px;
}

.support-stat-label {
    display: block;
    color: var(--gray-500);
    font-size: 13px;
    margin-bottom: 6px;
}

.support-stat-card strong {
    font-size: 28px;
    color: var(--gray-900);
}

.support-admin-layout {
    display: grid;
    grid-template-columns: 320px 1fr;
    gap: 16px;
    min-height: 620px;
}

.support-conv-list,
.support-chat-panel {
    background: #fff;
    border: 1px solid var(--gray-200);
    border-radius: 12px;
    overflow: hidden;
}

.support-conv-toolbar {
    display: flex;
    gap: 8px;
    padding: 12px;
    border-bottom: 1px solid var(--gray-200);
}

.support-conv-toolbar input,
.support-conv-toolbar select {
    flex: 1;
    padding: 8px 10px;
    border: 1px solid var(--gray-200);
    border-radius: 8px;
    font-size: 14px;
}

.support-conv-items {
    max-height: 560px;
    overflow-y: auto;
}

.support-conv-item {
    width: 100%;
    text-align: left;
    padding: 12px 14px;
    border: none;
    border-bottom: 1px solid var(--gray-100);
    background: #fff;
    cursor: pointer;
}

.support-conv-item:hover,
.support-conv-item.is-active {
    background: #f8fafc;
}

.support-conv-item.is-closed {
    opacity: 0.75;
}

.support-conv-top {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 8px;
    margin-bottom: 4px;
}

.support-conv-badge {
    min-width: 20px;
    height: 20px;
    padding: 0 6px;
    border-radius: 999px;
    background: var(--danger);
    color: #fff;
    font-size: 11px;
    line-height: 20px;
    text-align: center;
}

.support-conv-preview {
    color: var(--gray-600);
    font-size: 13px;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.support-conv-time {
    margin-top: 4px;
    color: var(--gray-400);
    font-size: 12px;
}

.support-chat-panel {
    display: flex;
    flex-direction: column;
}

.support-chat-head {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 12px;
    padding: 14px 16px;
    border-bottom: 1px solid var(--gray-200);
}

.support-chat-head h3 {
    margin: 0 0 4px;
    font-size: 18px;
}

.support-chat-head p {
    margin: 0;
    color: var(--gray-500);
    font-size: 13px;
}

.support-chat-actions {
    display: flex;
    gap: 8px;
}

.support-chat-body {
    flex: 1;
    overflow-y: auto;
    padding: 16px;
    background: #f8fafc;
}

.support-chat-compose {
    display: flex;
    gap: 10px;
    padding: 12px;
    border-top: 1px solid var(--gray-200);
}

.support-chat-compose textarea {
    flex: 1;
    resize: none;
    min-height: 44px;
    padding: 10px 12px;
    border: 1px solid var(--gray-200);
    border-radius: 10px;
    font-family: inherit;
}

.support-empty {
    padding: 40px 20px;
    text-align: center;
    color: var(--gray-500);
}

.sidebar-badge {
    margin-left: auto;
    min-width: 20px;
    height: 20px;
    padding: 0 6px;
    border-radius: 999px;
    background: var(--danger);
    color: #fff;
    font-size: 11px;
    line-height: 20px;
    text-align: center;
}

@media (max-width: 900px) {
    .support-admin-layout,
    .ticket-admin-layout {
        grid-template-columns: 1fr;
    }

    .support-conv-items {
        max-height: 240px;
    }

    .support-stats,
    .ticket-stats {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }
}

.ticket-stats {
    grid-template-columns: repeat(4, minmax(0, 1fr));
}

.ticket-detail-panel .ticket-detail-body {
    flex: 1;
    overflow-y: auto;
    padding: 16px;
    background: #f8fafc;
}

.ticket-status-select {
    padding: 8px 10px;
    border: 1px solid var(--gray-200);
    border-radius: 8px;
    font-size: 14px;
}

.ticket-reply-compose textarea {
    min-height: 80px;
}

@media (max-width: 768px) {
    .support-widget.support-mobile-hidden {
        display: none;
    }

    .support-panel {
        height: min(70vh, 480px);
    }
}