/* ============================================================
   自定义样式 style.css
   只放少量补充样式，主体布局交给 Bootstrap。
============================================================ */

/* ── 登录页：整页居中显示登录卡片 ── */
.login-body {
    display: flex;
    align-items: center;
    justify-content: center;
    min-height: 100vh;
    background: linear-gradient(135deg, #1e5aa0 0%, #14438c 100%);
}
.login-card {
    width: 360px;
    border: none;
}

/* ── 左侧菜单栏：占满高度、和内容区分隔 ── */
.sidebar {
    min-height: calc(100vh - 56px);
    border-right: 1px solid #dee2e6;
}
.sidebar .nav-link {
    color: #333;
    border-radius: 6px;
    margin-bottom: 2px;
}
.sidebar .nav-link:hover {
    background: #e9ecef;
}

/* ── 仪表盘数字卡片 ── */
.stat-number {
    font-size: 2.4rem;
    font-weight: 700;
    line-height: 1.1;
}
.stat-label {
    font-size: 0.95rem;
    opacity: 0.9;
}