/* 整体布局 */
.container-fluid {
    max-width: 1200px;
    margin: 0 auto;
    padding: 0 0 1rem  0;
    background-color: transparent;
}
.container-fluid:not(.not-bg) {
    background-image: url("../image/bg_dialog@2x.png");
    background-size: 100% 100%;
    background-repeat: no-repeat;
    background-color: #f5f6f7;
    background-position-y: -24px;
}

/* 输入区域 */
#message-input {
    resize: none;
    border: 1px solid #dadce0;
    border-radius: 0.75rem;
    padding: 0.5rem 0.75rem;
    background: white;
    box-shadow: 0 1px 2px rgba(0, 0, 0, 0.1);
    line-height: 2; /* 标准行高 */
    min-height: calc(1.5em + 1rem + 2px); /* 自动高度计算 */
    display: flex;
    align-items: center; /* 垂直居中 */

}

#message-input:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 2px rgba(26, 115, 232, 0.2);
}

#send-btn {
    border-radius: 0.75rem;
    margin-left: 0.5rem;
    padding: 0.5rem 1.2rem;
}

/* 卡片样式 */
.card {
    border: none;
    border-radius: 12px;
    box-shadow: 0 1px 3px rgba(0, 0, 0, 0.1);
}

.card-header {
    font-weight: 600;
    border-bottom: 1px solid rgba(0, 0, 0, 0.05);
}

/* 标签页样式 */
.nav-tabs .nav-link {
    border: none;
    border-radius: 0;
    padding: 12px 20px;
    color: #5f6368;
    font-weight: 500;
}

.nav-tabs .nav-link.active {
    color: var(--primary-color);
    border-bottom: 3px solid var(--primary-color);
    background: transparent;
}

/* 滚动条美化 */
::-webkit-scrollbar {
    width: 8px;
}

::-webkit-scrollbar-track {
    background: #f1f1f1;
    border-radius: 4px;
}

::-webkit-scrollbar-thumb {
    background: #c1c1c1;
    border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
    background: #a8a8a8;
}