/* wwwroot/css/site.css */
body {
    overflow-x: hidden;
    background-color: #f8f9fa; /* 淺灰背景，突顯卡片 */
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
}

#wrapper {
    display: flex;
    width: 100%;
    align-items: stretch;
}

/* 側邊欄樣式 - 模擬 AI-IO 風格 (深藍色系) */
#sidebar-wrapper {
    min-height: 100vh;
    min-width: 250px;
    max-width: 250px;
    background-color: #1a202c; /* 深色科技感背景 */
    color: #fff;
    transition: all 0.3s ease;
}

.sidebar-heading {
    padding: 1.5rem 1.25rem;
    font-size: 1.4rem;
    font-weight: bold;
    background-color: #141922; /* 標題區塊更深一點 */
    color: #38bdf8; /* AI 藍色文字 */
    border-bottom: 1px solid #2d3748;
}

.list-group-item {
    background-color: transparent;
    color: #cbd5e0;
    border: none;
    padding: 1rem 1.25rem;
    font-size: 1rem;
}

.list-group-item:hover {
    background-color: #2d3748;
    color: #fff;
    text-decoration: none;
}

.list-group-item.active {
    background-color: #3182ce; /* 激活狀態的藍色 */
    color: #fff;
    font-weight: 600;
}

/* Admin 區塊標題 */
.sidebar-subheading {
    padding: 1rem 1.25rem 0.5rem;
    font-size: 0.75rem;
    text-transform: uppercase;
    color: #718096;
    letter-spacing: 1px;
    font-weight: bold;
}

/* 內容區樣式 */
#page-content-wrapper {
    width: 100%;
    display: flex;
    flex-direction: column;
}

.navbar {
    background-color: #fff;
    box-shadow: 0 2px 4px rgba(0,0,0,0.05);
}

.container-fluid.main-content {
    padding: 2rem;
}

/* 卡片增強 */
.card {
    border: none;
    box-shadow: 0 4px 6px rgba(0, 0, 0, 0.05);
    margin-bottom: 1.5rem;
}