/* @🍮 */
/* === 应用头部导航栏 === */

.app-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 10px 20px;
    background-color: rgba(255, 255, 255, 0.8);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid #eee;
    flex-shrink: 0;
    position: relative;
    z-index: 10;
}

.app-header .back-btn,
.app-header .action-btn {
    background: none;
    border: none;
    font-size: 24px;
    font-weight: bold;
    color: var(--primary-color);
    cursor: pointer;
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
}

#cancel-multi-select-btn {
    font-size: 14px !important;
    font-weight: 500 !important;
    color: var(--white-color) !important;
    background-color: var(--primary-color) !important;
    border-radius: 10px !important;
    padding: 5px 10px !important;
    width: auto !important;
    height: auto !important;
}

.app-header .action-btn-group {
    display: flex;
    align-items: center;
    gap: 10px;
}

.app-header .action-btn-group .action-btn {
    font-size: 16px;
    font-weight: 600;
    width: auto;
    padding: 6px 12px;
    border-radius: 10px;
}

.app-header .action-btn-group #create-group-btn {
    background-color: var(--primary-color);
    color: var(--white-color);
}

.app-header .action-btn-group #add-chat-btn {
    font-size: 28px;
    padding: 0;
    width: 40px;
    height: 40px;
    background-color: transparent;
    color: var(--primary-color);
    border-radius: 50%;
}

.app-header .action-btn img {
    width: 28px;
    height: 28px;
}

.app-header .title-container {
    display: flex;
    flex-direction: column;
    align-items: center;
    text-align: center;
    position: absolute;
    left: 50%;
    transform: translateX(-50%);
}

.app-header .title {
    font-size: 18px;
    font-weight: 600;
    color: var(--text-color);
    margin: 0;
}

.app-header .subtitle {
    font-size: 12px;
    color: #888;
    display: flex;
    align-items: center;
    margin-top: 2px;
}

.online-indicator {
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background-color: var(--online-status-color);
    margin-right: 5px;
}

.app-header .placeholder {
    width: 40px;
}